Category Archives: Stem Cell Videos

Toronto, ON (PRWEB) June 24, 2012

Bel Marra Health, well known for offering high-quality, specially formulated vitamins and nutritional supplements, supports a recent study that shows the effect of stem cells on the newest eye health discovery.

According to a recent medical report published in the journal Molecular Vision, stem cells derived from a human embryo showed the capacity to differentiate into retinal cells, thus serving as a promising resource for eye protection and eye health in potentially blind patients with retinal disorders. The medical report described the results of an experiment that involved the introduction of human embryonic stem cells in the eyes of mice, with the goal of determining whether these cells were capable of growing and transforming into retinal cells. The experiment was conducted in an animal model as an initial test and once positive results were obtained, then it may be possible to conduct similar tests among human subjects.

The study involved injecting stem cells into the retinal space of the eyes of 46 week old mice and maintaining these animals for various periods of time, ranging from three weeks to three months. The eyes of the mice were then excised and histopathologically examined to determine whether these stem cells successfully integrated with the rest of the retina and may possibly help in preventing these animals from becoming blind or for eye protection. The study also investigated whether the original cells of the eyes of the mice generated an immune reaction against the injected stem cells, preventing their capacity in playing a role for eye protection.

The results of the study showed that the stem cells injected into the retinal space of the eyes incorporated well with the rest of the cells of the retina. The eye health of the mice was thus not affected in terms of the presence of these stem cells. In addition, histological examination of the eyes showed that the stem cells transformed into retinal cells, even producing essential proteins that were crucial for eye health and eye protection against becoming blind. However, the study also showed that the stem cells injected into the subretinal region, or the area below the retina, were less prone to integration with the rest of the eye. The results thus showed that stem cells injected into the eye may not be as efficient as first perceived in terms of integration and replacing defective tissues or organs.

Spokesperson for Bel Marra Health Dr. Victor Marchione commented on the study saying, Eye health and eye protection have been prime focus of research efforts in the field of ophthalmology as the incidence of individuals going blind have increased around the world. Different types of eye protection and preventative measures have also been studied to prevent the occurrence of symptoms that may lead to becoming blind. The concept of stem cells has been most appealing in terms of repairing and repairing defective tissues of the body, including its potential for application to eye health and eye protection.

CEO of Bel Marra Health Jim Chiang says more work needs to be done, There is still a need to further examine the specific mechanisms involved in stem cell transformation. The use of stem cells in treating blind people may seem to be too ambitious, yet through intensive years of research, it may still be possible to employ these cells in improving eye health and for eye protection.

(SOURCE: Molecular Vision. Long-term survival and differentiation of retinal neurons derived from human embryonic stem cell lines in un-immunosuppressed mouse retina, April 8, 2012)

Bel Marra Health, the maker of 20/20 Vision Formula, a formulation built in optimal dosages to help maintain healthy body weight, offers quality vitamins and nutritional supplements in formulations designed to address specific health concerns. All ingredients are backed with scientific evidence. Every product is tested for safety, quality, and purity at every stage of the manufacturing process. Furthermore, Bel Marra Health products are produced only in Health Canada approved facilities, going that extra mile to ensure our health conscious customers are getting top quality products. For more information on Bel Marra Health visit http://www.belmarrahealth.com or call 1-866-531-0466.

Bel Marra Health 100-7000 Pine Valley Woodbridge, ON L4L 4Y8 pr(at)belmarrahealth(dot)com 866-531-0466 http://www.belmarrahealth.com

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Bel Marra Health supports a recent study that shows the effect of stem cells on the newest eye health discovery

Newswise MADISON -- The blood-brain barrier -- the filter that governs what can and cannot come into contact with the mammalian brain -- is a marvel of nature. It effectively separates circulating blood from the fluid that bathes the brain, and it keeps out bacteria, viruses and other agents that could damage it.

But the barrier can be disrupted by disease, stroke and multiple sclerosis, for example, and also is a big challenge for medicine, as it can be difficult or impossible to get therapeutic molecules through the barrier to treat neurological disorders.

Now, however, the blood-brain barrier may be poised to give up some of its secrets as researchers at the University of Wisconsin-Madison have created in the laboratory dish the cells that make up the brains protective barrier. Writing in the June 24, 2012 edition of the journal Nature Biotechnology, the Wisconsin researchers describe transforming stem cells into endothelial cells with blood-brain barrier qualities.

Access to the specialized cells has the potential to streamline drug discovery for neurological disease, says Eric Shusta, a UW-Madison professor of chemical and biological engineering and one of the senior authors of the new study. You can look at tens of thousands of drug candidates and just ask the question if they have a chance to get into the brain. There is broad interest from the pharmaceutical industry.

The blood-brain barrier depends on the unique qualities of endothelial cells, the cells that make up the lining of blood vessels. In many parts of the body, the endothelial cells that line capillaries are spaced so that substances can pass through. But in the capillaries that lead to the brain, the endothelial cells nestle in tight formation, creating a semi-permeable barrier that allows some substances -- essential nutrients and metabolites -- access to the brain while keeping others -- pathogens and harmful chemicals -- locked out.

The cells described in the new Wisconsin study, which was led by Ethan S. Lippmann, now a postdoctoral fellow at the Wisconsin Institute for Discovery, and Samira M. Azarin, now a postdoctoral fellow at Northwestern University, exhibit both the active and passive regulatory qualities of those cells that make up the capillaries of the intact brain.

The research team coaxed both embryonic and induced pluripotent stem cells to form the endothelial cells of the blood-brain barrier. The use of induced cells, which can come from patients with specific neurological conditions, may be especially important for modeling disorders that compromise the blood-brain barrier. Whats more, because the cells can be mass produced, they could be used to devise high-throughput screens for molecules that may have therapeutic value for neurological conditions or to identify existing drugs that may have neurotoxic qualities.

The nice thing about deriving endothelial cells from induced pluripotent stem cells is that you can make disease-specific models of brain tissue that incorporate the blood-brain barrier, explains Sean Palecek, a UW-Madison professor of chemical and biological engineering and a senior author of the new report. The cells you create will carry the genetic information of the condition you want to study.

The generation of the specialized blood-brain barrier endothelial cells, the Wisconsin researchers note, has never been done with stem cells. In addition to the potential applications to screen drugs and model pathologies of the blood-brain barrier, they may also provide a novel window for developmental biologists who are interested in how the barrier comes together and co-develops with the brain.

Neurons develop at the same time as the endothelial cells, Shusta says, noting that, in development, the cells secrete chemical cues that help determine organ specificity.

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Blood-Brain Barrier Building Blocks Forged From Human Stem Cells

Boston, MA (PRWEB) June 25, 2012

After the possibility to cryopreserve amniotic fluid stem cell, it will be possible to cryopreserve stem cells contained in Chorionic Villi collected during the prenatal diagnosis test of Chorionic Villus Sampling (CVS). Chorionic Villi stem cells are fetal stem cells, pluripotent, with great characteristics in terms of proliferation, differentiation and genomic stability, being perfectly ethic at the same time.

Many international research groups are currently studying Chorionic Villi stem cells, that in the future might have a role in regenerative medicine and cellular therapy.

The service will be available thanks to a patent developed by Biocell Center Corporation - European biotech group based in Milan, Italy, with international branches in Medford, MA, USA, and Lugano, Switzerland - thanks to the last two years' researches. "We were able to come up with solutions for several technical and scientific issues - said Dr. Giuseppe Simoni, Biocell Center's Scientific Director - coming up with a method that allow us to obtain tremendous results in terms of quantity and viability of stem cells to cryopreserve."

The announcement, given during the exhibition BIO 2012 held this year in Boston - where Biocell Center have its facility and lab - was of great interest for the international scientific community.

"The hope - concluded Dr. Simoni - is that in the future this cells of the newborn might be used to regenerate tissues and cure diseases."

source: Biocell Center Corporation

Excerpt from:
Cryopreservation of Chorionic Villi and Amniotic Fluid Stem Cells

Have you ever wondered what happens to the stem cells once it is implanted in our body?

Well, now scientists had developed a method to track the stem cells in our body, according to a new report.

Scientists from the University of Liverpool have developed new methods to track stem cells and the changes that happen to them after they have been in the body for a significant period of time.

Scientists "labeled" the cells with superparamagnetic iron oxide nanoparticles (SPIONs) before they were administered to the patients.

The magnetic resonance imaging (MRI) scans clearly showed movement of the stem cells and the scientists could determine whether the stem cells reached their intended target or not.

However, scientists warn that conditions within the body's cells can lead to the degradation of SPIONs and reduce the ability of MRI scans to pick up on their signal in the long-term.

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To overcome this drawback, scientists are developing new methods to visualise SPION's in the cells before they enter the body to learn their performance in the long-term.

Photothermal technique, a unique optical imaging system is used to improve SPION labelling so that particles survive for longer and have minimal impact on the function of the transplanted cells.

"In order to fully explore this potential, however, more technological developments are needed to understand how stem cells behave in the body after transplantation. If we can't monitor stem cells effectively, it can have serious implications for patient health. Studies have already shown that if cells migrate to the circulatory system, beyond their target organ or tissue site, then it can cause inflammation in the body," said Dr Lara Bogart, scientist at the University's Institute of Integrative Biology in a statement.

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SPIONs to Track Functioning of Stem Cells Inside Body

Saturday, June 23, 2012

PACMAN TIDBITS. A Facebook friend, Davaoea US resident Choda Cuevo, commented re Pacman-Bradley issue: "It's not about Manny. It's all about money"! Atta girl!

My friend, Col. Art Evangelista, PNP officer, commented that it looks like a conspiracy because big money promoters in the boxing world are now grooming Bradley due to Pacman's rumored early retirement. So launching a new money-making machine, huh!

Have something to report? Tell us in text, photos or videos.

*****

SCARBOROUGH AFFAIR. Our first move was to militarize the issue and issued brave words. Now, we are withdrawing our Pinoy vessels from the disputed shoal, citing bad weather as reason. Really? As in chess, we made bad moves. We lost some pawns (like our bananas) in the exchange. Now we are retreating. I hope we're several moves ahead in this touchy game! New Ambassador to China, Sonia Brady, whom I personally know during my Palace stint, will be up to the job. Good choice, good move Mr. President. But bad opening move!

*****

CHINA RULES. I'm halfway reading Martin Jacques' book When China Rules the World. It predicts that by 2025, China's economy will outrun all others (Japan, EU, etc.) and will be a close second to the United States. But by 2050, China will be way ahead with her economy doubly bigger than the US. India will be close behind while Indonesia will contend. All of today's advanced countries will lag behind. Interesting reading.

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JUSTICE CARPIO. There's a guy who's been silent but had shown all these years his independence and judicial fortitude. Justice Antonio Carpio, a Davaoeo, was even bypassed in the past. But he stayed the course. It's not because he is a Davaoeo that I am rooting for him. But he deserves to be seriously considered Chief Justice as he is the most senior Supreme Court justice now. That's my unsolicited advice, Mr. President.

Read more:
Dureza: Stem cells, youth elixir

Using stem cells from human skin, Japanese scientists have grown a small human liver inside the skull of a mouse.

Hideki Taniguchi and Takanori Takebe from Yokohama City University used stem cells generated from human skin cells and developed them into percussor liver cells, the New Scientist reports.

Then they added other cells from umbilical cord blood vessels. The combination of cells then "guided itself" to form a small structure similar to liver tissue, Takebe said.

"We mixed and graded the cells onto the culture dish and they moved to form a cluster," he said. "It was a surprising outcome from what was, to be honest, an accident."

They implanted the structure into the head of a mouse, which was suffering from a severe genetic immune system disorder that prevented it from having an immune reaction to the foreign tissues.

The increased blood flow in the mouse's skull allowed the tissue to keep growing.

Within 48 hours, human blood vessels and human proteins formed. Glycogen and amino acids levels were the same as those of a human liver.

"It's not yet a perfect liver," Takebe said. "Improvements need to be made, such as the reconstruction of a bile duct."

The study could be significant for the field of regenerative medicine, but the researchers aren't yet sure whether the organ is a fully functioning liver, or whether they will be able to scale it to human size.

The findings were presented at the at the International Society for Stem Cell Research's annual meeting in Yokohama.

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Scientists grow tiny liver in mouse's head

Public release date: 21-Jun-2012 [ | E-mail | Share ]

Contact: Samantha Martin samantha.martin@liv.ac.uk 044-015-179-42248 University of Liverpool

Researchers at the University of Liverpool have developed new methods to track stem cells and further understanding of what happens to them after they have been in the body for a significant period of time.

Stem cells are used to treat conditions such as leukaemia and have the potential to treat many more diseases and disorders where patient survival is reliant on organ and tissue donation. Currently, however, it is difficult for medics to establish whether stem cells have survived following transplantation in the body and if they reach their target site or migrate elsewhere.

In order to track stem cells in the body scientists use superparamagnetic iron oxide nanoparticles (SPIONs) to 'label' the cells before they are administered into the patient. These particles can be picked up by magnetic resonance imaging (MRI) scans and help medics establish if the stem cells reach their intended target. Conditions within the body's cells, however, can lead to the degradation of SPIONs and reduce the ability of MRI scans to pick up on their signal in the long-term.

Scientists at Liverpool are developing methods to visualise SPIONs in the cells before they enter the body to learn where the particles are going within the stem cell and help predict how they might perform once they are inside the body over a long period of time. They are using a photothermal technique, a unique optical imaging system, to improve SPION labelling so that particles survive for longer and have minimal impact on the function of the transplanted cells.

Dr Lara Bogart, from the University's Institute of Integrative Biology, said: "Stem cells have the potential to replace and repair damaged tissue to preclude the need for a patient to wait for an organ or tissue transplant. Research is ongoing into how it could be used to treat a wide variety of diseases such as Alzheimer's, Parkinson's disease, and type one diabetes.

"In order to fully explore this potential, however, more technological developments are needed to understand how stem cells behave in the body after transplantation. If we can't monitor stem cells effectively, it can have serious implications for patient health. Studies have already shown that if cells migrate to the circulatory system, beyond their target organ or tissue site, then it can cause inflammation in the body.

"Labelling stem cells is hugely valuable to tracking their movements in the body, but we need to know more about how the particles used interact with stem cells. Using new imaging systems we can work out their precise location in the cell and how they behave over time. We hope to use this information to improve understanding of the MRI signal that tracks SPIONs once stem cells have been transplanted."

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Original post:
Research could help track stem cells in the body

Researchers at the University of Liverpool have developed new methods to track stem cells and further understanding of what happens to them after they have been in the body for a significant period of time.

Stem cells are used to treat conditions such as leukaemia and have the potential to treat many more diseases and disorders where patient survival is reliant on organ and tissue donation. Currently, however, it is difficult for medics to establish whether stem cells have survived following transplantation in the body and if they reach their target site or migrate elsewhere.

In order to track stem cells in the body scientists use superparamagnetic iron oxide nanoparticles (SPIONs) to 'label' the cells before they are administered into the patient. These particles can be picked up by magnetic resonance imaging (MRI) scans and help medics establish if the stem cells reach their intended target. Conditions within the body's cells, however, can lead to the degradation of SPIONs and reduce the ability of MRI scans to pick up on their signal in the long-term.

Scientists at Liverpool are developing methods to visualise SPIONs in the cells before they enter the body to learn where the particles are going within the stem cell and help predict how they might perform once they are inside the body over a long period of time. They are using a photothermal technique, a unique optical imaging system, to improve SPION labelling so that particles survive for longer and have minimal impact on the function of the transplanted cells.

Dr Lara Bogart, from the University's Institute of Integrative Biology, said: "Stem cells have the potential to replace and repair damaged tissue to preclude the need for a patient to wait for an organ or tissue transplant. Research is ongoing into how it could be used to treat a wide variety of diseases such as Alzheimer's, Parkinson's disease, and type one diabetes.

"In order to fully explore this potential, however, more technological developments are needed to understand how stem cells behave in the body after transplantation. If we can't monitor stem cells effectively, it can have serious implications for patient health. Studies have already shown that if cells migrate to the circulatory system, beyond their target organ or tissue site, then it can cause inflammation in the body.

"Labelling stem cells is hugely valuable to tracking their movements in the body, but we need to know more about how the particles used interact with stem cells. Using new imaging systems we can work out their precise location in the cell and how they behave over time. We hope to use this information to improve understanding of the MRI signal that tracks SPIONs once stem cells have been transplanted."

More information: The research is published in the journal, ACS Nano.

Journal reference: ACS Nano

Provided by University of Liverpool

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Superparamagnetic iron oxide nanoparticles could help track stem cells in the body

NEWARK, Calif., June 21, 2012 (GLOBE NEWSWIRE) -- StemCells, Inc. (STEM) today announced initiation of a Phase I/II clinical trial of the Company's proprietary HuCNS-SC(R) product candidate (purified human neural stem cells) in dry age-related macular degeneration (AMD) referred to as Geographic Atrophy. There are no approved treatments for dry AMD.

The trial is being conducted at the Retina Foundation of the Southwest's (RFSW) Anderson Vision Research Center in Dallas, Texas, one of the leading independent vision research centers in the United States. David G. Birch, Ph.D., Chief Scientific and Executive Officer of the RFSW and Director of the Rose-Silverthorne Retinal Degenerations Laboratory, is the principal investigator of the study.

"Dry AMD is the most common form of macular degeneration, and has a very debilitating effect on quality of life," said Dr. Birch. "Transplanting neural stem cells to protect photoreceptors in patients diagnosed with AMD is an innovative, but logical, approach, well supported by the Company's recently published preclinical data. We are very excited to be conducting this trial at RFSW."

A summary of the Company's preclinical data was featured in the February 2012 issue of the international peer-reviewed European Journal of Neuroscience (available online at http://onlinelibrary.wiley.com/doi/10.1111/j.1460-9568.2011.07970.x/abstract). The data demonstrated that HuCNS-SC cells protect host photoreceptors and preserve vision in the Royal College of Surgeons (RCS) rat, a well-established animal model of retinal disease which has been used extensively to evaluate potential cell therapies. Transplantation of HuCNS-SC cells significantly protects photoreceptors from degeneration. Moreover, the number of cone photoreceptors, which are responsible for central vision, remained constant over an extended period, consistent with the sustained visual acuity and light sensitivity observed in the study. In humans, degeneration of the cone photoreceptors accounts for the unique pattern of vision loss in dry AMD.

"Unlike others in the field, our clinical strategy is to preserve visual function before it is lost," said Stephen Huhn, MD, FACS, FAAP, Vice President and Head of the CNS Program at StemCells, Inc. "Our published preclinical data provides a strong rationale for this approach in dry AMD and we hope to replicate these results in this clinical trial. We are very pleased to be working with Dr. Birch and the Retina Foundation of the Southwest, who have the expertise and referral base to undertake this important study. We anticipate that we will be able to accrue the requisite number of patients for this trial in relatively short order."

About Age-Related Macular Degeneration

Age-related macular degeneration refers to a loss of photoreceptors (rods and cones) from the macula, the central part of the retina. AMD is a degenerative retinal disease that typically strikes adults in their 50s or early 60s, and progresses painlessly, gradually destroying central vision. According to the RFSW website, there are approximately 1.75 million Americans age 40 years and older with some form of age-related macular degeneration, and the disease continues to be the number one cause of irreversible vision loss among senior citizens in the US with more than seven million at risk of developing AMD.

About the Trial

The Phase I/II trial will evaluate the safety and preliminary efficacy of HuCNS-SC cells as a treatment for dry AMD. The trial will be an open-label, dose-escalation study, and is expected to enroll a total of 16 patients. The HuCNS-SC cells will be administered by a single injection into the space beneath the retina in the most affected eye. Patients' vision will be evaluated using both conventional and advanced state-of-the-art methods of ophthalmological assessment. Evaluations will be performed at predetermined intervals over a one-year period to assess safety and signs of visual benefit. Patients will then be followed for an additional four years in a separate observational study. Patients interested in participating in the clinical trial should contact the site at (214) 363 3911.

About HuCNS-SC Cells

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StemCells, Inc. Initiates Phase I/II Clinical Trial in Dry Age-Related Macular Degeneration

June 21, 2012

Connie K. Ho for redOrbit.com

Pumping vigorously night and day, the heart is clearly one of the most important organs in the human body. It is also one of the most delicate parts of the body. As such, news regarding heart-related diseases is beneficial to both doctors and patients. University of Michigan (UM) researchers recently reported the discovery of a new method that could produce cardiac muscle patches from stem cells.

The innovative process was created at UMs Center for Arrhythmia Research and effectively uses stem cells that can copy the hearts squeezing action. The cells showed activity that was like that of peoples resting heart rate. The rhythmic electrical impulse transmission of the engineered cells worked at a rate of 60 beats per minute and this rate was 10 times quicker than rates reported in other stem cell studies.

To date, the majority of studies using induced pluripotent stem cell-derived cardiac muscle cells have focused on single cell functional analysis, remarked senior author Dr. Todd J. Herron, an assistant research professor in the Departments of Internal Medicine and Molecular & Integrative Physiology at the U-M, in a prepared statement.

The researchers believe that the stem biology findings will be beneficial to those who suffer from common but life-threatening heart diseases. They hope that the use of stem cells will assist patients diagnosed with arrhythmia, which is found in approximately 2.5 million people. With arrhythmia, patients suffer an irregularity in the hearts electrical impulses and this can hinder the hearts ability to circulate blood.

For potential stem cell-based cardiac regeneration therapies for heart disease, however, it is critical to develop multi-cellular tissue like constructs that beat as a single unit, commented Herron in the statement.

Regarding the specifics of the project, the goal of the scientists was to use stem cells to develop skin biopsies. These biopsies could be used to produce large quantities of cardiac muscle cells, which could then help transmit uniform electrical impulses and work as a cohesive unit. In collaborating with researchers from the University of Oxford, Imperial College, and the University of Wisconsin, the team was able to design a fluorescent imaging platform. The platform used light emitting diode (LED) illumination to quantify the cells electrical activity.

Action potential and calcium wave impulse propagation trigger each normal heart beat, so it is imperative to record each parameter in bioengineered human cardiac patches, remarked Herron in the statement.

Overall, authors of the study believe that the velocity of the engineered cardiac cells is still slower than the velocity of cells found in the beating adult heart. However, the velocity of the engineered cardiac cells is quicker than those previously reported; it is also similar to the rate found in commonly used rodent cells. For future scientific research purposes, the investigators theorize that human cardiac patches could be utilized instead of rodent systems. The new method could be used in many cardiac research laboratories and allow cardiac stem cell patches to be utilized in disease research, new drug treatment testing, and therapies focused on repairing damaged heart muscles.

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Stem Cells To Aid In Heart-Related Research