Search Immortality Topics:

Page 20«..10..19202122..3040..»

Stem Cell Therapy – Premier Regenerative Stem Cell

Posted: November 26, 2017 at 10:44 am

Dr. Steven M. Siwek, M.D., has been President of Alliance Interventional at Alliance Healthcare Services, Inc. since April 2015 through The Pain Center (TPC) of Arizona a leader in Arizonas diagnosis and treatment of chronic pain disorders with 12 locations statewide.

Dr. Siwek has focused thelast 16 years of his career on creating and establishing programs that set national standards for quality coordinated care in pain management. His approach to preventing, treating and eliminating chronic pain is advancing the way in which interventional and pain management services are accessed and delivered nationwide. Dr. Siwek holds M.D. from the New York Medical College and completed his residency training at the Mayo Clinics in Rochester, Minneapolis, and Scottsdale, Arizona and fellowship at the Mayo Clinic in Jacksonville, Florida. He holds an M.B.A. from the Graziadio School of Business and Management at Pepperdine University.

Premier Regenerative Stem Cell and Wellness Centers of Arizona will be combining our research and experience in stem cell therapy with Dr. Siweks high level of chronic pain management. As our lead doctor in our Arizona location, together, we plan on setting a standard in regenerative treatments to help eliminate orthopedic pain and neurological conditions. Dr. Siweks willingness to provide the best point of care therapy for his patients matches Premier Regenerative Stem Cell and Wellness Centers of Arizonas goals to foster an environment where research and compassion translate into individualized patient care.

View post:
Stem Cell Therapy – Premier Regenerative Stem Cell

Recommendation and review posted by Guinevere Smith

What Is Regenerative Medicine? | Regenerative Medicine at …

Posted: November 26, 2017 at 10:44 am

Regenerative medicine seeks to replace tissue or organs that have been damaged by disease, trauma, or congenital issues, vs. the current clinical strategy that focuses primarily on treating the symptoms. The tools used to realize these outcomes are tissue engineering, cellular therapies, and medical devices and artificial organs.

Combinations of these approaches can amplify our natural healing process in the places it is needed most, or take over the function of a permanently damaged organ. Regenerative medicine is a relatively new field that brings together experts in biology, chemistry, computer science, engineering, genetics, medicine, robotics, and other fields to find solutions to some of the most challenging medical problems faced by humankind.

When injured or invaded by disease, our bodies have the innate response to heal and defend. What if it was possible to harness the power of the body to heal and then accelerate it in a clinically relevant way? What if we could help the body heal better?

The promising field of Regenerative Medicine is working to restore structure and function of damaged tissues and organs. It is also working to create solutions for organs that become permanently damaged. The goal of this approach is to find a way to cure previously untreatable injuries and diseases.

1. Tissue Engineering and BiomaterialsTissue engineering is a strategy where biologically compatible scaffolds are implanted in the body at the site where new tissue is to be formed. If the scaffold is in the geometric shape of the tissue that needs to be generated, and the scaffold attracts cells the outcome is new tissue in the shape desired. If the newly forming tissue is subjected to exercise as it forms, the outcome can be new functional engineered issue.

Millions of patients have been treated with some form of tissue engineered devices, yet the field is in its infancy. The primary success stories have been with soft tissue regeneration. To learn more about some of the promising studies and clinical trials involving tissue engineering,click here.

2. Cellular TherapiesMany millions of adult stem cells are found in every human. Our body uses stem cells as one way of repairing itself. Studies have illustrated that if adult stem cells are harvested and then injected at the site of diseased or damaged tissue, reconstruction of the tissue is feasible under the right circumstances. These cells can be collected from blood, fat, bone marrow, dental pulp, skeletal muscle and other sources. Cord blood provides yet another source of adult stem cells. Scientists and clinicians are developing and refining their ability to prepare harvested stem cells to be injected into patients to repair diseased or damaged tissue.

To learn more about some of the promising studies and clinical trials involving cellular therapies,click here.

3. Medical Devices and Artificial OrgansIn cases where an organ fails, the predominant clinical strategy is to transplant a replacement organ from a donor. The principal challenges are the availability of donor organs, and the requirement that the donor take immunosuppression drugswhich have side effects. Further, there are many instances where the time to find a suitable donor organ requires an interim strategy to support or supplement the function of the failing organ until a transplantable organ is found. Using circulatory support as an example, there are technologies in various stages of maturity, initially using ventricular assist devices (VADs) as a bridge to a heart transplant, and now there are VADs that are used for long-term circulatory support (destination therapy).

Scientists and clinicians around the world are developing and evaluation devices to supplement or to replace the function of many organ systems including the heart, lung, liver and kidney.

To learn more about some of the promising studies and clinical trials involving medical devices and artificial organs, click here.

Read more from the original source:
What Is Regenerative Medicine? | Regenerative Medicine at …

Recommendation and review posted by Guinevere Smith

Ethical Implications of Human Genetic Engineering | SAGE

Posted: November 26, 2017 at 10:41 am

DNA editing techniques have been available for decades and are crucial tools for understanding gene functions and molecular pathways. Recently, genome editing has stepped back into the limelight because of newer technologies that can quickly and efficiently modify genomes by introducing or genetically correcting mutations in human cells and animal models. These tools include Zinc Finger Nucleases (ZFNs), Transcription activator-like effector nucleases (TALENs), and the most recent player to join the ranks, Clustered Regularly Interspaced Short Palindromic repeats (CRISPR) (here, here). In a short time span, CRISPR/Cas9 has completely revolutionized the understanding of protein function, disease modeling, and potential therapeutic applications.


The CRISPR/Cas9 system functions similarly to ZFNs and TALENs, it also takes advantage of a cells DNA repair machinery to delete (knock-out) or add in (knock-in) sequences of DNA. However, CRISPR/Cas9 offers several advantages: it is easier to target a specific gene of interest since designing the required CRISPR component is simple and efficient, whereas generating ZFNs and TALENs is more time consuming; it is often more proficient in generating the desired recombination results; and it is exponentially more cost effective, so almost any laboratory in the world can use it. CRISPR/Cas9 has been shown to work in several model organisms, and consequently researchers are keen to apply this technology for modifying genetic mutations in humans with uncured diseases as well as in human embryos, which arouses many scientific and ethical considerations.

Human embryonic gene editing

Genome editing technologies have come a long way and have already advanced towards mammalian models and clinical trials in humans. Recently, genetic modification of human embryos using CRISPR/Cas9 technology was achieved by the Huang laboratory in China in April 2015. They genetically modified un-viable embryos obtained from an in vitro fertilization clinic. These embryos were fertilized with two different sources of sperm, thus impairing their development. In this study, the Huang group repaired a mutation in the human -globin gene (HBB) that causes the blood disorder -thalassaemia. The CRISPR/Cas9 system and a donor DNA sequence containing the normal, healthy version of the HBB were injected into 86 embryos. A total of four embryos successfully integrated the corrected version of the HBB at the appropriate site. However, the authors reported a high number of off-target effects, meaning that CRISPR/Cas9 modified other locations in the genome; a non-ideal situation that could cause the disruption of other essential gene functions. The study demonstrated two important findings: genetic engineering is possible in human embryos and the CRISPR/Cas9 system requires essential improvements before it can be used in future studies on human embryos. More importantly, these results force scientists to question the future and the implications of such a powerful technology. Should we accept genetic engineering of human embryos? If yes, when and in what capacity should we accept it?

Current guidelines and regulation

Scientists in the United States are addressing the need for regulation of human embryonic gene editing. On April 29th, the US National Institute of Health (NIH) director, Dr. Francis Collins, released a statement emphasizing the bureaus policy against funding research involving genome editing of human embryos and the ethical concerns regarding this technology. However, the policy does not necessarily cover privately funded projects.

Safety regarding genetic engineering is a major concern and Huangs publication highlights this point. However, this publication forces the community to address whether scientists should use non-viable or discarded embryos to improve the efficiency and efficacy of the CRISPR/Cas9 system. The CRISPR/Cas9 system was developed for human genome targeting in 2012 and since then has seen rapid improvements. If it is decided that unviable embryos can be used for this type of research, the next step for US lawmakers is to evaluate new guidelines for the funding and safety of genetic engineering in these embryos.

Ethical concerns

While the interest and use of CRISPR/Cas9 has exploded since its discovery in 2012, prominent scientists in the field have already initiated conversations regarding the ethical implications that arise when modifying the human genome. Preventing genetic diseases by human genetic engineering is inevitable. The slippery slope is when/if we start to use it for cosmetic changes such as eye color or for improving a desired athletic trait. A perfect example is surgery, which we have performed for hundred years for disease purposes and is now widely used as a cosmetic tool. Opening the doors for genetic engineering of human embryos could with time lead to manipulate genetics for desirable traits, raising the fear of creating a eugenic driven human population.

Who are we to manipulate nature? However, for all those who suffer from genetic diseases the answer is not so simples; if we can safely prevent severe genetic diseases and create healthy humans, why not manipulate nature? Have we not already done this in other animal populations? At this time the long term effects of genome editing remain unknown, raising additional questions. As the field progresses, with appropriate regulations and guidelines it will eventually co-exist alongside other major controversial topics including nuclear power and genetically modified organisms. Since ethics are different across the world, creating international guidelines will be a challenge, but a necessity. Strict regulations are in place for nuclear power, the same should be possible for genetic engineering of human embryos. To outlaw genetic engineering entirely will be potentially declining a place at the discussion table, as the further utilization of CRISPR/Cas9 technology is unlikely to be abandoned.

This fall The National Academy of Sciences and National Academy of Medicine, together with CRISPR/Cas9 discoverers Dr. Jennifer Doudna, Dr. Emmanuelle Charpentier, and other leading scientist within the field are organizing an international summit to consider all aspects (both ethical and scientific) of human genetic engineering to develop standard guidelines and policies for practicing human genome editing. The NIH already has guidelines in place, and will potentially add more as a result of this summit. It is expected that other countries will have varying guidelines for human genomic engineering. Also, to avoid fear and misunderstanding, scientists will need to convey human genome editing in a responsible manner to the general human population. This summit is a step in the right direction encouraging caution and regulations. Hence, there is now a need for a timely but thoughtful set of guidelines for the general scientific community as well as for the broader human community.

Read this article:
Ethical Implications of Human Genetic Engineering | SAGE

Recommendation and review posted by Fredricko

Resveratrolthe hype continues – Harvard Health Blog …

Posted: November 26, 2017 at 10:40 am

Oh, the giddy abandon that overtakes some headline writers when crowning a story about resveratrol, a chemical found in red wine. Heres a sampling of the latest:

All that for an article published today in the journal Cell suggesting that resveratrol blocks the action of a muscle enzyme called phosphodiesterase 4 in mice. Dont get me wrong: its interesting research, that couldemphasis on couldopen the door someday to new treatments for heart disease, diabetes, memory loss, and other chronic conditions. But it doesnt merit the hype that comes with almost any new research on resveratrol.

Resveratrol is a compound that various plants make to fight off bacteria, fungi, and other microbial attackers, or to withstand drought or lack of nutrients. It has been found in red and purple grapes, blueberries, cranberries, mulberries, lingonberries, peanuts, and pistachios. Resveratrol is also abundant in the roots of Japanese knotweed, a plant that has become a hard-to-eradicate invader in the United States.

In 1992, two Cornell University plant scientists suggested that resveratrol might be responsible for the cardiovascular benefits of red wine. Since then, hundreds of reports have indicated that resveratrol mayemphasis on mayprotect against cancer, cardiovascular disease, vascular dementia, and Alzheimers disease, and extend the life span.

Exactly how resveratrol might do all this is still a mystery. One possibility is that it turns on genes that make sirtuins, ancient proteins found in virtually all species. Activating sirtuins kicks off a response that fights disease and prolongs life. The Cell researchers were trying to figure out just how resveratrol might turn on sirtuin genes.

Virtually all of the positive studies on resveratrol have come from cultures of cells or laboratory experiments with yeast, roundworms, fruit flies, the short-lived turquoise killifish, or mice. The few human studies have looked at specific intermediate markers, such as levels of antioxidants, heart rate variability, blood flow to the brain, and amounts of cancer proteins. None have measured long-term health or survival.

Another big unknown is side effects. Resveratrol acts on many different tissues in the body. It is chemically related to estrogen. In some situations, high doses of resveratrol boost the activity of estrogen, in others they block estrogen. That makes resveratrol supplements iffy for women with cancer of the breast, ovary, uterus, or other estrogen-sensitive tissue, those trying to become pregnant, or those taking an oral contraceptive.

Resveratrol makes platelets in the bloodstream less sticky, and so could increase the risk of bleeding in people who take warfarin (Coumadin), clopidogrel (Plavix), aspirin, ibuprofen, or other nonsteroidal anti-inflammatory drugs.

Another cloud: a company called Sirtris Pharmaceuticals, which was established to develop drugs from resveratrol, pulled the plug on the program in 2010 when a clinical trial showed that one of these drugs might be linked to kidney damage.

If you believe that resveratrol will help you live longer and healthier, get it from food or wine, not by choking down resveratrol pills. Why? Eating red grapes, blueberries, and pistachios, or having a glass of your favorite red wine, are pleasurable ways to take in resveratrol. Plus you get all the other healthful plant products that come with the resveratrol. Getting it via supplement is dull, and you cant always trust what you are getting. If you choose to take a supplement, shop carefully. A review by the independent ConsumerLab found that one brand cost just 15 cents per 100 milligrams of resveratrol, while another cost $2.76 per 100 milligrams.

Its worth keeping an eye on resveratrol research. But its far too soon to be promoting it as a fountain of youth or wonder drug.

Follow this link:

Resveratrolthe hype continues – Harvard Health Blog …

Recommendation and review posted by Fredricko

Resveratrol: Red Wine Antioxidant for Health – WebMD

Posted: November 26, 2017 at 10:40 am

Resveratrol is a natural chemical compound found in grapes, red wine, and other foods. As a supplement, resveratrol has been promoted as a treatment for many conditions — including aging itself.

Researchers have long believed that substances in red wine might have health benefits. Drinking red wine in moderation may be associated with a lower risk of heart disease. Beginning in the 1990s, experts began to focus on resveratrol, an antioxidant compound in red wine. Since then, some animal and lab studies have shown that resveratrol has promising antiviral, anti-inflammatory, and anticancer effects.

However, resveratrol supplements have not been well studied in people. We don’t really know what benefits and risks they might have. We also don’t know if resveratrol is necessarily more important than some of the other natural substances in wine.

Nonetheless, resveratrol has become a popular supplement. People use it for many different conditions. Some take resveratrol supplements to try to prevent or treat serious diseases, like cancer or heart disease. Others hope that they will slow the aging process. For now, these uses are unsupported by evidence.

Resveratrol is an unproven treatment and there is no standard dose. Some estimates of doses come from preliminary research studies. Ask your health care provider for advice.

Resveratrol occurs naturally in red wine, red grape skins, grape juice, peanuts, mulberries, and some Chinese herbs.

Some people wonder if they should drink more red wine because of the possible health benefits of resveratrol. However, most experts and organizations like the American Heart Association still suggest limiting alcoholic drinks to one per day for women and two for men. Four ounces of red wine equals one drink. Other forms of alcohol do not have resveratrol.

Given the lack of evidence about their safety, resveratrol supplements are not recommended for children or for women who are pregnant or breastfeeding.


American Heart Association: “Alcohol, Wine and Cardiovascular Disease.”

Fundukian, L., ed. The Gale Encyclopedia of Alternative Medicine, third edition, 2009.

Linus Pauling Institute: “Resveratrol.”

Memorial Sloan-Kettering Cancer Center: About Herbs: Resveratrol.

Natural Medicines Comprehensive Database: Resveratrol.

Natural Standard Patient Monograph: Resveratrol.

View original post here:

Resveratrol: Red Wine Antioxidant for Health – WebMD

Recommendation and review posted by Guinevere Smith

Gene Therapy The Future of Medicine? | Science Care

Posted: November 25, 2017 at 2:44 am

Gene therapy is an experimental method of fighting disease that involves correcting or replacing a persons mutated or malfunctioning genes. This promising research is now being used in clinical trials and may lead to improved health outcomes for patients with inherited bleeding and immune disorders as well as some forms of blood cancer and other diseases.

What Is Gene Therapy?

Genes carry the DNA information needed to make proteins that are the building blocks of the human body. Some of these genes can become damaged through mutation, which can lead to disease conditions. Gene therapy is a scientific technique that uses genes to prevent or treat disease in a number of different ways:

Finding the Keys to Alter Body Chemistry

Currently, gene therapy can be used for conditions in which a change in the genetic coding of somatic cells can alter the course of a disease. For example, to correct a disease in which a specific enzyme is missing, the addition of a necessary gene component for production of the enzyme would fix the underlying problem of the disease. In many cases, harmless viruses are employed to serve as packets to carry the new gene to where it is needed. When used this way, the viruses are called vectors, and their own genes may be removed and replaced with the working human gene. Once the gene is correctly placed, it can be switched on to provide the working instructions for correct function.

Conditions Being Treated with Gene Therapy

Although much of this may still sound like the realm of mad scientists tinkering with the human body, gene therapy is an accepted experimental technique that is currently being used to help patients with certain types of cancer to target specific antibodies that can be used to fight the disease. Gene therapy is also being used to correct deficiencies in the production of dopamine, such as in Parkinsons disease, correct some immune system problems, and restore components needed for normal blood cell function in those with certain blood diseases, such hemophilia and beta-Thalassemia. Gene therapy holds promise for treating a wide range of diseases, including cancer, cystic fibrosis, heart disease, diabetes, hemophilia and AIDS.

Potential Risks

Gene therapy does come with some potential risks, all of which, researchers are hoping to overcome. Because the genes have to be delivered using a carrier or vector, the bodys immune system may see the newly introduced viruses as intruders and attack them. Its also possible that the altered viruses may infect additional cells, not just the targeted cells containing mutated genes. There may also be some concern that the viruses may recover their original ability to cause disease, or that the new genes get inserted in the wrong spot in a patients DNA, leading to tumor formation.

Hope for the Future

Gene therapy holds promise as an effective treatment option for a variety of diseases at some point in the near future. An estimated 4,000 medical conditions are a result of gene disorders. If some of these genetic problems can be corrected through gene replacement or manipulation, individuals suffering from these diseases may enjoy longer, healthier lives, free of symptoms and the associated medical expenses.

More here:
Gene Therapy The Future of Medicine? | Science Care

Recommendation and review posted by Guinevere Smith

Page 20«..10..19202122..3040..»