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The second Indo-Swiss Meeting on Evolutionary Biology begins today – Research Matters

Posted: December 13, 2019 at 6:54 pm

The Centre for Human Genetics, Bengaluru, is hosting the second edition of the Indo-Swiss Meeting Meeting on Evolutionary Biology, held in India this year. The meeting is jointly organised by the Indian Society of Evolutionary Biologists, Centre for Human Genetics, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) and Swissnex India. The gathering brings together faculty and students from India and Switzerland. The three day meeting begins on the 12th of December and continues until the 14th.

The highlight of the event is the line-up of talks by various researchers from both countries on the topic of evolutionary biology.

We have about a hundred participants registered for the event and we hope to have a great discussion during the three days, said Prof Amitabh Joshi from JNCASR, who is also the coordinator of this event. This meeting, currently in its second edition, hopes to bring increased collaborations between researchers from both the countries, he says.

The presentations during the meeting span a huge spectrum of evolutionary biology, with Principal Investigators and doctoral and postdoctoral students from different institutes, presenting their research to a wider audience.

It feels nice to be here for the second edition of this meeting in India and I am hoping to meet many researchers and network with them, says Dr Rolf Kmmerli, from the University of Zurich. He had attended the first version of the meeting held in Switzerland. This year, the gathering is bigger than last year. he says.

The meeting hosts six talks by Swiss researchers and twelve by senior and early-career Indian evolutionary biologists. There is also a poster presentation and panel discussion organised as a part of the event. Additional details and the information on speakers can be found here.

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A Harvard geneticist is creating a dating app that matches users based on DNA, and people are worried its eugenics – Business Insider

Posted: December 13, 2019 at 6:54 pm

captionA file photo of a DNA double helix in an undated artists illustration released by the National Human Genome Research Institute to ReuterssourceThomson Reuters

Harvard University geneticist George Church recently discussed his plans to create a dating app that matches users based on their DNA, sparking debate whether the concept is helpful or harmful.

Church, who does gene-editing research, appeared on CBS 60 Minutes on Sunday and talked about why he believes his dating app concept, called Digid8, is needed.

According to Church, his app-to-be will prevent users from being matched with other users who share certain genes linked to rare genetic diseases like Tay-Sachs, which destroys a persons brain and spinal cord nerves, or cystic fibrosis, which causes chronic lung infections.

Church said his app concept could prevent people from having children with inherited genetic disorders because itd stop people with the same genetic predispositions from matching in the first place. He said the concept, if used widely, could eliminate many of todays genetic diseases entirely.

But critics of Churchs idea said its reminscent of eugenics, a philosophy that promotes selective breeding to create a physically superior race of humans, and one that was popularized by Nazis during the second World War to create a pure master race.

To use the app, which is currently unavailable and still in its development phase, users will first submit a saliva sample to a lab, similar to existing genetic testing services like 23andMe. Then, the lab would run various genetics tests on the spit specimen to determine what genetic diseases a person may carry.

According to Church, that information would remain confidential to the lab so not even the person who submitted the specimen would know the results. When they use dating apps then, theyd only be matched with people would dont have those same disease genes so the likelihood they pass them onto their future children is slim.

About 5 percent of children are born with a severe genetic disease, and so that means youre compatible with about 95 percent of people, Church said on 60 Minutes. Were just adding this [tool] to all the other dating criteria.

People who have criticized Churchs concept said it could have a snowball effect where people use it beyond its intended purpose of preventing genetic diseases.

Its not the technology itself thats problematic. Its how we use it, Vardit Ravitsky, a bioethicist at the Universit de Montral, told Medium.

People with disabilities, transgender people, people of color could be discriminated against using Digid8, Vice writer Janus Rose recently wrote.

The app could end up being used to weed out people who others deem genetically undesirable or inferior, Rose wrote, and put them at a disadvantage on these dating platforms that are meant to be inclusive of people regardless of ability, gender identity, and other factors.

Churchs genetics lab previously received funding from the late Jeffrey Epstein, a socialite and convicted pedophile who had a known interest in transhumanism, a eugenics-based philosophy that uses technology in an attempt to enhance the human population.

But Church said his app has nothing to do with eugenics because hes not requiring people to partake in it like classic eugenics does through forced sterilization, breeding, and extermination of certain people.

Church also said his lab works with an ethicist with the goal of making genetic testing technologies available to all people.

There are a lot of diseases which are not so serious which may be beneficial to society in providing diversity, for example, brain diversity. We wouldnt want to lose that, Church said on 60 Minutes. But if [a baby] has some very serious genetic disease that causes a lot of pain and suffering, costs millions of dollars to treat and they still die young, thats what were trying to deal with.

Until Digid8 officially launches, though, we wont know how the app will actually be used or abused.

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A Harvard geneticist is creating a dating app that matches users based on DNA, and people are worried its eugenics - Business Insider

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Teams of Microbes Are at Work in Our Bodies. Researchers Have Figured Out What Theyre up… – ScienceBlog.com

Posted: December 13, 2019 at 6:54 pm

An algorithm akin to the annoyingly helpful one that attempts to auto-complete text messages and emails is now being harnessed for a better cause. A group of Drexel University researchers are using its pattern-recognition ability to identify microbial communities in the body by sifting through volumes of genetic code. Their method could speed the development of medical treatments for microbiota-linked ailments like Crohns disease.

In the last decade, scientists have made tremendous progress in understanding that groups of bacteria and viruses that naturally coexist throughout the human body play an important role in some vital functions like digestion, metabolism and even fighting off diseases. But understanding just how they do it remains a question.

Researchers from Drexel are hoping to help answer that question through a clever combination of high-throughput genetic sequencing and natural language processing computer algorithms. Their research, which was recently published in the journal PLOS ONE, reports a new method of analyzing the codes found in RNA that can delineate human microbial communities and reveal how they operate.

Much of the research on the human microbial environment or microbiome has focused on identifying all of the different microbe species. And the nascent development of treatments for microbiota-linked maladies operates under the idea that imbalances or deviations in the microbiome are the source of health problems, such as indigestion or Crohns disease.

But to properly correct these imbalances its important for scientists to have a broader understanding of microbial communities as they exist both in the afflicted areas and throughout the entire body.

We are really just beginning to scrape the surface of understanding the health effects of microbiota, said Gail Rosen, PhD, an associate professor in Drexels College of Engineering, who was an author of the paper. In many ways scientists have jumped into this work without having a full picture of what these microbial communities look like, how prevalent they are and how their internal configuration affects their immediate environment within the human body.

Rosen heads Drexels Center for Biological Discovery from Big Data, a group of researchers that has been applying algorithms and machine learning to help decipher massive amounts of genetic sequencing information that has become available in the last handful of years. Their work and similar efforts around the world have moved microbiology and genetics research from the wet lab to the data center creating a computational approach to studying organism interactions and evolution, called metagenomics.

In this type of research, a scan of a genetic material sample DNA or RNA can be interpreted to reveal the organisms that are likely present. The method presented by Rosens group takes that one step farther by analyzing the genetic code to spot recurring patterns, an indication that certain groups of organisms microbes in this case are found together so frequently that its not a coincidence.

We call this method themetagenomics, because we are looking for recurring themes in microbiomes that are indicators of co-occurring groups of microbes, Rosen said. There are thousands of species of microbes living in the body, so if you think about all the permutations of groupings that could exist you can imagine what a daunting task it is to determine which of them are living in community with each other. Our method puts a pattern-spotting algorithm to work on the task, which saves a tremendous amount of time and eliminates some guesswork.

Current methods for studying microbiota, gut bacteria for example, take a sample from an area of the body and then look at the genetic material thats present. This process inherently lacks important context, according to the authors.

Its impossible to really understand what microbe communities are doing if we dont first understand the extent of the community and how frequently and where else they might be occurring in the body, said Steve Woloszynek, PhD, and MD trainee in Drexels College of Medicine and co-author of the paper. In other words, its hard to develop treatments to promote natural microbial coexistence if their natural state is not yet known.

Obtaining a full map of microbial communities, using themetagenomics, allows researchers to observe how they change over time both in healthy people and those suffering from diseases. And observing the difference between the two provides clues to the function of the community, as well as illuminating the configuration of microbe species that enables it.

Most metagenomics methods just tell you which microbes are abundant therefore likely important but they dont really tell you much about how each species is supporting other community members, Rosen said. With our method you get a picture of the configuration of the community for example, it may have E. coli and B. fragilis as the most abundant microbes and in pretty equal numbers which may indicate that theyre cross-feeding. Another community may have B. fragilis as the most abundant microbe, with many other microbes in equal, but lower, numbers which could indicate that they are feeding off whatever B. fragilis is making, without any cooperation.

One of the ultimate goals of analyzing human microbiota is to use the presence of certain microbe communities as indicators to identify diseases like Crohns or even specific types of cancer. To test their new method, the Drexel researchers put it up against similar topic modeling procedures that diagnose Crohns and mouth cancer by measuring the relative abundance of certain genetic sequences.

The themetagenomics method proved to be just as accurate predicting the diseases, but it does it much faster than the other topic modeling methods minutes versus days and it also teases out how each microbe species in the indicator community may contribute to the severity of the disease. With this level of granularity, researchers will be able to home in on particular genetic groupings when developing targeted treatments.

The group has made its themetagenomics analysis tools publicly available in hopes of speeding progress toward cures and treatments for these maladies.

Its very early right now, but the more that we understand about how the microbiome functions even just knowing that groups may be acting together then we can look into the metabolic pathways of these groups and intervene or control them, thus paving the way for drug development and therapy research, Rosen said.

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Work is part of being human – robots won’t stop us doing it – TechCentral

Posted: December 13, 2019 at 6:54 pm

Hardly a week goes by without a report announcing the end of work as we know it.

In 2013, Oxford University academics Carl Frey and Michael Osborne were the first to capture this anxiety in a paper titled: The Future of Employment: How susceptible are jobs to computerisation?.

They concluded 47% of US jobs were threatened by automation. Since then, Frey has taken multiple opportunities to repeat his predictions of major labour market disruptions due to automation.

In the face of threats to employment, some progressive thinkers advocate jettisoning our work ethic and building a world without work.

If machines can do our work, why not reduce the working week drastically? We should be mature enough to decide what truly matters to us, without tying our identity to a job, or measuring happiness in dollars and professional status. Right?

Not quite.

The reality is that work is tied to our constitution as a species. And this fact is too often overlooked in discussions about the future of work.

Recent studies have raised alarms that advances in automation and artificial intelligence (AI) will leave all sectors open to the threat of machines replacing human workers.

The power of AI will supposedly, according to these studies, even make high-skilled specialists redundant threatening medical practitioners, bank associates and legal professionals.

Predictions about the rise of the robots either take a pessimistic stance, focusing on disruptions to economic organisations, or view undoing work as an opportunity to move to a fairer social model.

However, these views disregard the central role work has played in humanitys development.

Philosophers including Karl Marx, Henri Bergson and John Dewey argued that working is a defining trait of humans.

Findings over the past two decades have confirmed that features of modern Homo sapiens are directly tied to their tendency to work.

Three basic ideas of the old philosophers are reaffirmed by contemporary research in archaeology, anthropology and genetics.

First, humans havent evolved to fit into their environments as seamlessly as other animals. Humans have had to compensate for a lack of fit.

They did this by learning about the ecosystems around them, the plants and animals they could eat, and the natural processes they could use, or should avoid. This knowledge was applied to create instruments, tools and weapons.

Very early on, humans mobilised their knowledge and skills to shape their immediate surroundings and become the dominant animal.

Knowledge of nature, technical skills and intervention in the environment are all characteristics of humans capacity to work. These allowed us to adapt to highly diverse geographies and climates.

Each new generation has to learn the skills and knowledge that will enable it to sustain its particular mode of survival.

Australian philosopher Kim Sterelny has shown in detail how evolution selected genetic traits that sustain humans capacity to learn, specifically by enhancing social behaviour and tolerance towards the young.And as humans worked on nature, they also worked in ways that influenced their minds, and their bodies.

It has been demonstrated that cooperation in humans reaches a level unknown in other species. This cooperative capacity has its roots in each individuals dependency on the knowledge, skills and efforts of others.

No human is able to sustain himself on his own, and collaboration exceeds what each person can produce alone. Even the most brilliant astrophysicist calls the plumber to fix a broken toilet.

Humans have to work to survive, and this entails working with, and for, others.

Acknowledging the anthropological depth of work means admitting current scenarios advocating the end of work are not the right answer. They take an unrealistic view of who we are.

We need to recognise work as a human need. As Marx said: Labour has become not only a means of life, but lifes prime want.

The question should not be whether theres room for human work in an automated future. The question should be: how will human work find its place next to machines and robots?

Even if automation becomes widespread, well still apply our minds, bodies and hands to productive tasks. Well still experiment and learn from others.

If machines could truly do all human work, then theyd make humans redundant, as 2001: A Space Odyssey anticipated back in 1968. While this isnt a pleasant scenario, its not a likely one either.

Automation might bring major social and economic disruptions in the short term, but it wont get rid of the need for humans to work.

Human needs are also infinitely complex. Nobody can foretell what new activities, techniques and consequent modes of working will fulfil future needs.

Even if we reject the modern work ethic, well still find ways to learn through action and emulate experts.Human intelligence is geared toward producing useful goods, so well continue to look for purposeful activities, too. And well seek collaboration with others for mutual benefit.

This is the influence of work on us. We are heir to thousands of years of evolution, and it would be pretentious to assume evolution could stop with us.

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Seattle Genetics Announces Positive Tucatinib HER2CLIMB Trial Results in Locally Advanced or Metastatic HER2-Positive Breast Cancer Presented at 2019…

Posted: December 13, 2019 at 6:54 pm

BOTHELL, Wash.--(BUSINESS WIRE)--Seattle Genetics, Inc. (Nasdaq:SGEN) today announced positive pivotal data from the HER2CLIMB trial evaluating tucatinib in patients with HER2-positive metastatic breast cancer (MBC) were presented at the 2019 San Antonio Breast Cancer Symposium (SABCS) and simultaneously published in the New England Journal of Medicine (NEJM). The HER2CLIMB trial compared tucatinib in combination with trastuzumab and capecitabine to trastuzumab and capecitabine alone in patients with unresectable locally advanced or metastatic HER2-positive breast cancer. Patients had previously received trastuzumab, pertuzumab and ado-trastuzumab emtansine (T-DM1). Patients had received a median of four prior lines of therapy overall and three lines in the metastatic setting. Forty-seven percent of the patients enrolled in the trial had brain metastases at the time of enrollment. HER2CLIMB is the first randomized pivotal trial completed to enroll patients with metastatic HER2-positive breast cancer who have untreated or previously treated and progressing brain metastases. Tucatinib is an oral, small molecule tyrosine kinase inhibitor (TKI) that is highly selective for HER2.

Following progression on trastuzumab, pertuzumab and T-DM1 in the metastatic HER2-positive breast cancer setting, there is no single standard of care regimen and clinical trial participation is often strongly encouraged. There is a significant unmet medical need for these patients, particularly those who develop brain metastases, said Rashmi Murthy, MD, MBE, Assistant Professor, Department of Breast Medical Oncology, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center. The addition of tucatinib to the commonly used combination of trastuzumab and capecitabine improved overall survival, reducing the risk of death by 34 percent compared to trastuzumab and capecitabine alone. The results from HER2CLIMB demonstrate tucatinib has the potential to become a new treatment option for patients who have been previously treated with multiple anti-HER2 agents, including patients with and without brain metastases.

Continued innovation to bring new therapies for the treatment of metastatic HER2-positive breast cancer is urgently needed, and we are encouraged by the impressive clinical activity demonstrated with the addition of tucatinib to trastuzumab and capecitabine in the HER2CLIMB trial, said Roger Dansey, M.D., Chief Medical Officer at Seattle Genetics. Tucatinib demonstrated a statistically significant and clinically meaningful benefit in overall survival, progression-free survival and objective response rate compared to the control arm. We plan to submit a New Drug Application (NDA) to the U.S. Food and Drug Administration and a Marketing Authorization Application (MAA) to the European Medicines Agency by the first quarter of 2020, with the goal of bringing a much-needed new medicine to patients.

Data presented at SABCS and published in NEJM include the primary endpoint of progression-free survival (PFS) as assessed by blinded independent central review (BICR) in the first 480 patients enrolled in the trial. HER2CLIMB enrolled a total of 612 patients to support the analyses of key secondary endpoints, including overall survival (OS) as well as progression-free survival (PFS) in patients with brain metastases at baseline.

Pivotal HER2CLIMB Trial Results

Efficacy:

Safety:

About HER2-Positive Breast Cancer

Patients with HER2-positive breast cancer have tumors with high levels of a protein called human epidermal growth factor receptor 2 (HER2), which promotes the aggressive spread of cancer cells. An estimated 271,270 new cases of invasive breast cancer will be diagnosed in the U.S. in 2019.1 Between 15 and 20 percent of breast cancer cases worldwide are HER2-positive.2 Historically, HER2-positive breast cancer tends to be more aggressive and more likely to recur than HER2-negative breast cancer.2, 3, 4 In patients with metastatic breast cancer, the most common site of first metastasis is in bone, followed by lung, brain, and liver.5, 6 Up to 50 percent of metastatic HER2-positive breast cancer patients develop brain metastases over time.2, 7 Despite recent treatment advances, there is still a significant need for new therapies that can impact metastatic disease, especially brain metastases. There are currently no approved therapies demonstrating progression-free survival or overall survival benefit for the treatment of patients with HER2-positive metastatic breast cancer after progression on T-DM1.8, 9, 10

About HER2CLIMB

HER2CLIMB is a multinational randomized (2:1), double-blind, placebo-controlled, active comparator, pivotal clinical trial comparing tucatinib in combination with trastuzumab and capecitabine compared with trastuzumab and capecitabine alone in patients with locally advanced unresectable or metastatic HER2-positive breast cancer who were previously treated with trastuzumab, pertuzumab and T-DM1. The primary endpoint of the trial was PFS per Response Evaluation Criteria in Solid Tumors (RECIST) v1.1 as determined by blinded independent central review (BICR) in the first 480 patients enrolled in the trial. HER2CLIMB enrolled a total of 612 patients to support the analyses of key secondary endpoints, including overall survival, PFS per BICR in patients with brain metastases at baseline and confirmed objective response rate. Safety data were evaluated throughout the study.

About Tucatinib

Tucatinib is an investigational, orally bioavailable, potent tyrosine kinase inhibitor that is highly selective for HER2 without significant inhibition of EGFR. Inhibition of EGFR has been associated with significant toxicities, including skin rash and diarrhea. Tucatinib has shown activity as a single agent and in combination with both chemotherapy and other HER2 targeted agents such as trastuzumab.1,2 Studies of tucatinib in these combinations have shown activity both systemically and in brain metastases. HER2 is a growth factor receptor that is overexpressed in multiple cancers, including breast, colorectal and gastric cancers. HER2 mediates cell growth, differentiation and survival. Tucatinib has been granted orphan drug designation by the FDA for the treatment of breast cancer patients with brain metastases.

In addition to HER2CLIMB, tucatinib is being evaluated in a randomized, double-blind, placebo-controlled, multi-center phase 3 trial of tucatinib in combination with T-DM1 compared to T-DM1 alone, in patients with unresectable locally advanced or metastatic HER2-positive breast cancer, including those with brain metastases, who have had prior treatment with a taxane and trastuzumab. The primary endpoint is progression-free survival per RECIST criteria. Secondary endpoints include overall survival, objective response rate and duration of response. The trial is being conducted in North America and is expected to enroll approximately 460 patients. More information about the phase 3 trial, including enrolling centers, is available at http://www.clinicaltrials.gov.

Tucatinib is also being evaluated in a multi-center, open-label, single-arm phase 2 clinical trial known as MOUNTAINEER, which is evaluating tucatinib in combination with trastuzumab in patients with HER2-positive, RAS wildtype metastatic or unresectable colorectal cancer. The primary endpoint of the trial is objective response rate by RECIST criteria. Progression-free survival, duration of response, overall survival and safety and tolerability of the combination regimen are secondary objectives. Results for 26 patients were evaluated in an analysis and presented at the European Society for Medical Oncology (ESMO) 2019 Congress. Enrollment is ongoing. More information about the MOUNTAINEER trial, including enrolling centers, is available at http://www.clinicaltrials.gov.

About Seattle Genetics

Seattle Genetics, Inc. is an emerging multi-product, global biotechnology company that develops and commercializes transformative therapies targeting cancer to make a meaningful difference in peoples lives. ADCETRIS (brentuximab vedotin) utilizes the companys industry-leading antibody-drug conjugate (ADC) technology and is currently approved for the treatment of multiple CD30-expressing lymphomas. Beyond ADCETRIS, the company has a late-stage pipeline including enfortumab vedotin for metastatic urothelial cancer, currently being reviewed for approval by the FDA, and tisotumab vedotin in clinical trials for metastatic cervical cancer, which utilize our proprietary ADC technology. In addition, tucatinib, a small molecule tyrosine kinase inhibitor, is in late-stage development for HER2-positive metastatic breast cancer and in clinical development for metastatic colorectal cancer. We are also leveraging our expertise in empowered antibodies to build a portfolio of proprietary immuno-oncology agents in clinical trials targeting hematologic malignancies and solid tumors. The company is headquartered in Bothell, Washington, and has a European office in Switzerland. For more information on our robust pipeline, visit http://www.seattlegenetics.com and follow @SeattleGenetics on Twitter.

Forward Looking Statements

Certain of the statements made in this press release are forward looking, such as those, among others, relating to the therapeutic potential of tucatinib, including its possible efficacy, safety and therapeutic uses; anticipated development activities including ongoing and future clinical trials; and intended regulatory actions, including the plan to submit an NDA to the FDA and a MAA to the EMA by the first quarter of 2020. Actual results or developments may differ materially from those projected or implied in these forward-looking statements. Factors that may cause such a difference include the difficulty and uncertainty of pharmaceutical product development, the risk of adverse events or safety signals, the possibility of disappointing results in ongoing or future clinical trials despite earlier promising clinical results, the possibility of delays in the submission of an NDA to the FDA and a MAA to the EMA, the possibility that data from the HER2CLIMB trial may not be sufficient to support approval of tucatinib and the possibility of adverse regulatory action. More information about the risks and uncertainties faced by Seattle Genetics is contained under the caption Risk Factors included in the companys Quarterly Report on Form 10-Q for the quarter ended September 30, 2019 filed with the Securities and Exchange Commission. Seattle Genetics disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.

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Seattle Genetics Announces Positive Tucatinib HER2CLIMB Trial Results in Locally Advanced or Metastatic HER2-Positive Breast Cancer Presented at 2019...

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PPI Use and Periodontal Disease: What’s the Link? – Monthly Prescribing Reference

Posted: December 13, 2019 at 6:53 pm

The use of proton pump inhibitors (PPIs) in patients with generalized, chronic, moderate-to-severe periodontitis (stage III to IV; grade B to C) was associated with less severe periodontitis, according to study findings presented at the 2019 AIBD Annual Meeting in Orlando, Florida.

For this study, researchers aimed to assess whether treatment with a PPI could potentially decrease bone loss in patients with periodontitis. Data from patients who were referred to the postgraduate periodontics program at the University at Buffalo between 2010 and 2017 was used to identify those with generalized, chronic, moderate-to-severe periodontitis (N=518). The significance of systemic factors such as inflammatory bowel disease (IBD), smoking, diabetes, hypothyroidism, and other autoimmune disorders, in addition to medication history (ie, systemic steroids, hormone replacement therapy), were taken into account in the final analysis. The severity of periodontitis was measured by calculating the percentage of teeth that had pocket depths of 6mm.

We found that there was an inverse relationship between use of PPI and severity of [periodontitis], independent of the systemic conditions noted above, the authors reported. Findings from the study showed that 13.1% of patients on PPIs had pocket depths 6mm compared with 19.9% of those not receiving PPIs, resulting in a 34.2% decrease in severity (95% CI 2.1%, 11.6%; P =.006). Similar results were observed in the unadjusted patient population (15.7% on PPI vs 22.6% not on PPI; P=.004).

The data indicate that more conservative periodontal therapy might initially be considered for IBD patients with advanced periodontal disease for whom PPI are prescribed as a component of their IBD treatment, the authors concluded.

Reference

Yerke LM, Cohen RE; Relationship Between Proton Pump Inhibitors and Periodontal Disease: Treatment Considerations for IBD Patients. Presented at the 2019 AIBD Annual Meeting on December 12-14 2019 in Orlando, FL.

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Breast Cancer and Hair Dye: Is There A Link Between Coloring Your Hair and Cancer? – Parade

Posted: December 13, 2019 at 6:53 pm

A recent study published in the International Journal of Cancer examined the use of permanent hair dye and chemical straighteners among black and white women with a sister with breast cancer in the U.S.

They found a higher breast cancer risk associated with the use of permanent hair dye and straighteners, with the risk being higher in black women.

The study left many women asking one big question: Should I stop dyeing or straightening my hair?

That question may be on your mind, too, especially if you have a standing appointment at your favorite salon. But experts caution that more research would be useful before theyd encourage you to go gray (or curly).

I think its too early to make a big widespread treatment recommendation based on it, says Dr. Megan Kruse, a breast medical oncologist with the Cleveland Clinic.

Dr. Elizabeth Arena, a surgical oncologist specializing in breast cancer atSurgery Group of Los Angeles, has a similar perspective, saying shes not quite ready to tell her patients to stop dyeing their hair just yet. She points out that the study was an observational study, and shed like to see more research.

But I do think its really interesting, she says. I think its really great that someones looking into these things.

One thing to consider is that all the study participants already had a close relative with breast cancer, which automatically puts them in a higher risk category.

Related: Test Your Breast Cancer IQ

Many experts applaud the researchers of the new study for delving into the issue.

Its definitely going to be something that women are thinking about, says Dr. Kruse, who has already begun fielding questions from patients about the implications of the study.

Medical oncologist Dr. Abenaa Brewster credits the studys researchers for delving into an issue that affects many women and for specifically including black women in the study.

They asked a relevant question that women are concerned about, she says, calling it a culturally relevant question for women.

As the study notes, more than one-third of women over the age of 18 dye their hair, and those dyes contain an array of chemicals, as do many chemical straighteners, which often contain formaldehyde, which is a carcinogen.

The researchers wrote that, in their findings, permanent hair dye use was associated with a 45% higher breast cancer risk in black women, compared with a 7% higher risk in white women. They also raised questions about products used by many black women. They wrote, The strength of association observed for permanent dye use among black women is consistent with toxicological assessments that report higher concentrations of estrogens and endocrine-disrupting compounds in hair products marketed to black women.

Related: 5 Myths About Breast Cancer Symptoms

People can control how they alter their hair color or consistency. If future studies conclude that using certain types of hair products do raise the risk of developing breast cancer, some doctors may add that to their list of modifiable risk factors.

But there are already other modifiable risk factors.

There are things that you can do to alter your risk, and this may be one, says Brewster, professor in the Department of Clinical Cancer Prevention at MD Anderson Cancer Center.

For example, you cant change your age or your family history of breast cancer, but you can make positive changes to your diet. You can exercise more frequently, lose weight and maintain a healthy body weight. You can swap cocktails for mocktails, as research shows that reducing the amount of alcohol that you consume can lower your risk for developing hormone-receptor-positive breast cancer.

The use of hormone replacement therapy, or HRT, is another possible risk factor that some women can address. Many post-menopausal take some form of HRT to relieve menopause symptoms, such as hot flashes, sweating and vaginal dryness.

HRT does come in different formspills, as well as skin patches, gels and vaginal creamsand with different combinations of hormones, notes Dr. Kruse. And the risk may depend on the type of HRT that a woman chooses, the age of the woman herself, and the duration of time that she takes HRT.

Dr. Arena says she encourages patients with concerns to talk to their gynecologists about their issues with menopause. Some women may choose to forego HRT or switch to a different type, depending on the symptoms theyre trying to manage and their other risk factors, such as a family history of breast cancer.

But at this point, with patients who are at average risk for developing breast cancer, Dr. Arena says she will probably tell patients, At this stage, you dont need to change your practice with what you do with your hair.

Dr. Kruse hopes that women will take advantage of the opportunity posed by the studys release to consider their own risk profiles. She also hopes theyll look into their family histories, if they havent already.

It will hopefully get some people asking their family members about it and talking about it, she says.

Learn about Hairprint, a nontoxic hair color thats rolling out in salons.

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Breast Cancer and Hair Dye: Is There A Link Between Coloring Your Hair and Cancer? - Parade

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Compounding Pharmacies Market 2019 Size, Share, Analysis, Applications, Sale, Growth Insight, Trends, Leaders, Services and Forecast 2025 – Tribunal…

Posted: December 13, 2019 at 6:53 pm

Global compounding pharmacies industry is segmented by different product type, application type as well as therapeutic area. Then again, product type is further sub-segmented as Oral Medication, Topical Medication, Suppositories and Mouthwashes. Among all of these markets, medication segment rules, with more than 40% of the market share and revenue of USD xxx million in previous year. This high market value of oral medication is attributable to the growing demand for the drug, particularly for pain management. Besides, the liquid oral dosage formulas are mostly preferred as they come with convenience as well as ease of administration. Also, elderly people often desire liquid form in place of commercially available other forms of dosage. Oral medication segments further trailed by Topical medication with the desirability index of around 2.2%.

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Also, North America shares the largest regional potential compounding pharmacies market, accounting for xx% since past years and is expected to mount at a CAGR of approximately xx% over the forecast period. Furthermore, rising expenditure in healthcare in emerging economies including India as well as China is anticipated to fuel the revenue growth of compounding pharmacies.

Key trend driving the growth of the compounding pharmacies market is development in healthcare as well as pharmaceutical spendings. Moreover, compounded drugs come in to action when the requirement for life-threatening drugs are not met through commercially branded equivalents available in the market. Moreover, another trend prevailing in the compounding pharmacies market all across the globe is continuously intensifying demand for anti-ageing products and these products are actually made using compounded drugs. Additionally, inventive sub-therapeutic zones for instance bio-identical hormone replacement therapy is also propelling the increasing popularity of compounded pharmacies. However, compounding pharmacies all over the world are requisite to follow the regulatory specifications by the respective governments.

By application type, the compounding pharmacies market has been further been divided segmented to medication for adults, veterinary, children and geriatric among which medication for adult segment is predictable of gaining maximum market share over the forecast period.

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Then, by therapeutic area, compounding pharmacies market is sub-segmented to pain management & hormone replacement therapy. The therapeutic area of the market segment is led by the hormone replacement therapy sub-segment that is expected to advance highest share in terms of value over the forecast period.

Drugs produced by druggists for the personalized needs of an individual patient by altering, mixing or combining the active therapeutic ingredients of drugs are known as compounding pharmacies. In addition, compounded drugs can be prepared only after the instruction from physicians, as it includes mixing of two or more types of drug components in different proportions.

One of the biggest challenge has been faced by the compounding pharmacies industry across the globe is the safety or effectiveness approval of compounded drugs from the regulatory bodies, which is the most difficult part of the process. Moreover, many of the medical insurance do not cover these compounded medications under their benefits.

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Compounding Pharmacies Market 2019 Size, Share, Analysis, Applications, Sale, Growth Insight, Trends, Leaders, Services and Forecast 2025 - Tribunal...

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By turning stem cells into brain cells, Aspen Neuroscience hopes to rewind the progress of Parkinson’s disease – FierceBiotech

Posted: December 13, 2019 at 3:52 am

The idea of a cell therapy for Parkinsons disease starts out simple: Symptoms of the progressive disease are largely driven by the deaths of dopamine-producing neurons found deep within the brain. With lower levels of the neurotransmitter come the characteristic tremors, rigidity and slow movements.

By replacing those lost nerve cells with new dopamine producers, researchers hope to renew the brains connection to the bodys muscles and improve a persons overall motor function.

But in the brain, everything becomes more complicated. On top of the risk of immune system rejection that comes with any kind of living tissue transplant, its important to make sure the implanted cells function correctly and do not pick up any dangerous genetic mutations as they grow.

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Now, a new company, Aspen Neuroscience, aims to tackle both obstacles at once.

First, the startup hopes to avoid any harmful immune reactions by using a patients own cells as a starting point. Then, Aspen plans to implement a rigorous quality control program employing whole genome sequencing and artificial intelligence to make sure the cells stay in line as theyre processed and readied for the procedure.

And to do it, the San Diego-based company is starting out with $6.5 million in seed money plus an impressive roster of names.

They are led by neurology researcher Howard Federoff, previously vice chancellor for health affairs and CEO of the University of California, Irvine health system as well as the executive dean of medicine at Georgetown University. Hes joined by Aspen co-founder and stem cell scientist Jeanne Loring, founding director and professor emeritus of the Center for Regenerative Medicine at the Scripps Research Institute.

Meanwhile, the seed round was led by Domain Associates and Axon Ventures with additional backing from Alexandria Venture Investments, Arch Venture Partners, OrbiMed and Section 32.

Aspen looks to combine its expertise in stem cell biology, genomics and neurology to offer the first autologous cell therapy for Parkinsons diseasewhile others in the space have pursued allogeneic routes, or therapies derived from donors other than the patient.

The process starts with a culture of the patients skin cells, which are then genetically induced to become pluripotent stem cellsor cells capable of differentiating into any other cell type in the body. These are then chemically nudged further to transform into precursor versions of the dopamine-producing neurons, which are typically found in the midbrain and regions responsible for the movement of limbs.

We can say without any equivocation that we can produce the population of cells necessary to transplant, and in a short enough period of time to have a potential beneficial impact on the evolution of the disease, said Federoff, who has also served as chair of the NIHs Recombinant DNA Advisory Committee and helped lead the U.S. Parkinsons Disease Gene Therapy Study Group.

We envisage that this will set back the clock on patients who have Parkinsons, unlike any other therapy that we know of, he told FierceMedTech in an interview.

The number of cells needed would be much smaller compared to other cell therapies and cancer treatments. The healthy human brain contains only about 200,000 dopamine-producing nerve cells, split between its two hemispheres, while patients with Parkinsons disease have lost about 50% or more of those neurons.

Aspen aims to evaluate two doses: one that aims to replace about 60% to 65% of a persons normal cell complement and another larger treatment, Federoff said.

Those smaller doses, as well as starting with a patients donor cells, help make the treatment safer to produce by requiring fewer steps. Each cycle of cell division and multiplication to increase their numbers carries the risk of introducing genetic mutations.

As the cells are grown, they are consistently evaluated with data-driven techniques pioneered by Lorings laboratory. Using whole genome RNA sequencing, Aspen will match the cells up at every stage with a genetic barcode taken from each patient at the start. This will allow them to look for changes, duplications or deletions in the pluripotent stem cell genome.

If the cells harbor mutations that are cancer drivers, we don't want to put those into people, Loring said. The only way is to check the sequencing before we transplant them.

The cells used in the transplant procedure arent fully grown; as neuron progenitors, they mimic the development steps seen in the brain of a growing fetus after theyre placed in the body as they wire themselves up to other neural structures and begin to form new networks of their own.

We anticipate that they will manufacture and release dopamine in a manner that is consistent with synaptic neurotransmission and the process of communicating from cell-to-cell, said Federoff. They will take up dopamine from synapses when it has done its business, bring it back into the cell, and prepare it for another synaptic release.

These are not just dopamine pumps, theyre real neurons, added Loring. They will genuinely replace the cells that have been lost in every way.

Aspen plans to pursue two courses of therapy, for the two major types of Parkinsons disease. Their lead candidate is for idiopathic, or sporadic Parkinsons, while their second is a CRISPR-edited version of the therapy designed to address one of the diseases most common genetic mutations, linked to about 5% of cases.

This would not only aim to restart dopamine production in this orphan indication, but also restore the damaged enzyme GBA, which is seen as an underlying cause. Federoff and Loring expect their sequencing-based quality check system will also help catch any off-target edits linked to the use of CRISPR-Cas9.

The company has yet to secure permission from the FDA to officially launch clinical trials, but the agency has signed off on Aspens plans to prepare a trial-ready cohort of Parkinsons disease patients in the meantime. This would include the initial stages of recruitment and testing, including the selection of patients capable of having their skin cells made into pluripotent stem cells.

After it receives its go-ahead from the FDA, Aspen plans to hit the ground running,enrolling at least 176 participants in a phase 1/2 study that includes a randomized stage to determine clinical benefits.

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Researchers ID Molecule that Appears to Halt and Reverse Scarring in Fibrotic Diseases – BioSpace

Posted: December 13, 2019 at 3:52 am

Fibrosis, or scarring, is central to a number of diseases, including cirrhosis of the liver, chronic kidney disease and several lung diseases. Generally, any organ in the body can repair itself after injury. Normally, scarring occurs and then recedes, making room for normal tissue as healing occurs. But sometimes the healing goes awry and the cells that make up scar tissue continue dividing and spreading until the scar tissue itself strangles the organ it was healing. This can cause organ failure.

Researchers at the University of California-Los Angeles Health Sciences have developed a scar-in-a-dish model derived from stem cells that can mimic fibrosis. They then identified a drug that could stop the fibrotic progression and, in further animal models, actually reverse fibrosis. They published their research in the journal Cell Reports.

Millions of people living with fibrosis have very limited treatment options, said Brigitte Gomperts, a member of the Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research at UCLA. Once scarring gets out of control, we dont have any treatments that can stop it, except for whole-organ transplant.

The scar-in-a-dish model utilized several different types of cells derived from human stem cells. It used induced pluripotent stem cells (iPS).

Fibrosis likely occurs as the result of interactions between multiple different cell types, so we didnt think it made sense to use just one cell type to generate a scarring model, said Preethi Vijayaraj, the reports first author and an assistant adjunct professor of pediatric hematology/oncology at the David Geffen School of Medicine at UCLA and a member of the UCLA Johnsson Comprehensive Cancer Center.

The mixture of cells they grew had many types that are believed to participate in fibrosis, including mesenchymal cells, epithelial cells and immune cells. All of them maintained some plasticity, allowing them to change cells types. This is the first known model to recreate that plasticity, which is associated with progressive fibrosis.

They then placed the cells in a rigid hydrogel that was similar to the stiffness of a scarred organ. The cells behaved the same way they would to injury, producing damage signals and activating transforming growth factor beta (TGF beta), which typically stimulates fibrosis.

The use of the gel, as opposed to tissue, meant it couldnt heal itself. This allowed the researchers to test molecules on the scarring in a way that isolated the drug and scarring tissues. They tested more than 17,000 small molecules. They identified one that stopped progressive scarring and healed the damage. They believe the compound activates the cells innate wound healing processes.

This drug candidate seems to be able to stop and reverse progressive scarring in a dish by actually breaking down the scar tissue, said Gomperts. We tested it in animal models of fibrosis of the lungs and eyes and found that it has promise to treat both of those diseases.

The next steps are to determine how the drug candidate works and also screen more molecules. The drug has not been tested in humans. The therapeutic strategy is covered by a patent application the UCLA Technology Development Group filed on behalf of the Regents of the University of California, with Gomperts and Vijayaraj listed as co-inventors. Gomperts is also a co-founder and stock owner of a biotech company, InSpira, which is focused on developing the molecule and strategy for fibrosis.

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Researchers ID Molecule that Appears to Halt and Reverse Scarring in Fibrotic Diseases - BioSpace

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