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Doubt over breast cancer fall link

Posted: Published on March 16th, 2013

Doubt has been cast on research that suggests a decline in hormone replacement therapy (HRT) use is linked to a fall in the number of new breast cancer cases. Use of the drugs dropped rapidly after a series of studies claimed using HRT increases the risk of breast cancer. Researchers subsequently suggested that the drop-off in HRT use was directly linked to a decline in breast cancer rates. But experts writing in the Journal of Family Planning and Reproductive Health Care said there is "no clear evidence" of a link. However, the authors said that statistics and time trends "neither back up nor refute the claim". The link between HRT and the disease has proved controversial, with several studies suggesting the finding has been blown out of proportion. But other research has reinforced the association, including two studies in 2006 and 2007. One claimed that between 2002 and 2003 - following the publication of the reports which first raised concerns about the drug and subsequently the decline in use - the numbers of new breast cancer cases fell by 6.7%. The second study showed that the rates of single and combined HRT fell by 58% and 38% respectively between 2001 … Continue reading

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The HRT Controversy Redux

Posted: Published on March 16th, 2013

A 2002 study linking hormone replacement therapy to the risk of breast cancer scared scores of menopausal women away from HRT. Now new research, published in the Journal of Family Planning and Reproductive Health Care,reports that "there is no clear evidence that the decline in the use of hormone replacement therapy is linked to a reported fall in the numbers of new cases of breast cancer, as has been claimed," according to a release from the publisher. "Based on the observed trends in the incidence of breast cancer following the decline in HRT use, the ecological evidence is too limited either to support or refute the possibility that HRT causes breast cancer," the authors wrote in the last of a series of five critiques of the published data in three major studies on HRT. In related news, a consensus statement issued by seven major professional societies and published on line in the journals Climacteric and Maturitas stated that hormone replacement therapy is the most effective available treatment for menopause symptoms. An article about the statement in Medpage Today reports that the risk-benefit balance for HRT "tends to be greatest in women younger than 60 or within 10 years after menopause … Continue reading

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Doctors Clear Up Confusion Over Hormone Therapy

Posted: Published on March 16th, 2013

The safety of taking hormones to treat the symptoms of menopause has been questioned in recent years, but a new consensus statement from several doctors' groups aims to resolve confusion over how the treatment should be used. Hormone replacement therapy (HRT) is the most effective treatment for the symptoms of menopause, such as hot flashes and sleep problems, but the therapy comes with risks, so it should be used on a case-by-case basis, the statement said. About a decade ago, a large study found that HRT that included estrogen and progestin increased the risk of breast cancer by about 25 percent in postmenopausal women. The finding was so dramatic that researchers stopped the study early and physicians changed how they prescribed HRT. The new statement says that while the therapy comes with risks, its benefits generally outweigh the harm for women under age 60, or those who've been in menopause for fewer than 10 years. The increased risk of breast cancer also appears to disappear a few years after treatment is stopped, the statement says. [See 5 Experts Answer: Is Hormone Replacement Therapy Safe?] "The decision to use [HRT] comes down to an individual woman, in consultation with her doctor," … Continue reading

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Hormone replacement therapy : benefits outweigh risks for some women

Posted: Published on March 16th, 2013

By Deborah Kotz, Globe Staff Its been a decade since postmenopausal women were warned off hormone replacement therapy after a large randomized trial called the Womens Health Initiative found that the combination of synthetic estrogen and progesterone caused more heart attacks and strokes than it prevented -- in addition to raising breast cancer risks. But follow-up studies conducted by some of the WHIs leading investigators have since indicated that the benefits of hormone pills outweigh the risks, at least for healthy women in their 50s who are suffering from menopausal hot flashes and night sweats. A series of research reviews published this week in the journal Climacteric questions the wisdom of abandoning HRT altogether. As the journals editors in chief wrote, an entire generation of younger doctors has never prescribed HRT even to those who have dozens of hot flashes a day, drenched sleepless nights, and mood changes that often accompany these symptoms. What doctors should be doing, the editors wrote, is balancing the small risks of hormone use against the improved quality of life that a few years of hormone therapy might provide. Several years ago, my former colleague, Dr. Bernadine Healy -- who initiated the WHI trial when … Continue reading

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CIRM governance issues – Video

Posted: Published on March 16th, 2013

CIRM governance issues CIRM chairman Jonathan Thomas discusses governance issues of California's stem cell agency. To the left is UCSD stem cell researcher Larry Goldstein, to the ... By: Bradley Fikes … Continue reading

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CASIS Announces Request for Information to Identify Non-Embryonic Stem Cell Research Implementation Partners

Posted: Published on March 16th, 2013

The Center for the Advancement of Science in Space (CASIS), the nonprofit organization promoting and managing research on board the International Space Station (ISS) U.S. National Laboratory, today announced a Request for Information (RFI) seeking to identify entities capable of serving as implementation partners for microgravity-based, non-embryonic stem cell research conducted on the station. The CASIS Science Advisory Board has identified non-embryonic stem cell research as a strong opportunity for developing a biosciences portfolio for the ISS. This is due to previous experiments in microgravity that have demonstrated diverse cellular activities including cell proliferation, cell cycle, cell differentiation, apoptosis, genomic integrity and DNA damage repair. From this RFI, CASIS will develop an internal database of entities that can support payload development needs for non-embryonic stem cell research. This information gathering opportunity comes before an official non-embryonic stem cell Request for Proposals is announced in the coming months. "CASIS continues to be encouraged by the amount of partners willing to facilitate bringing groundbreaking research ideas to the National Lab," said CASIS Interim Director Jim Royston. "Through this RFI, CASIS can better gauge the capabilities of our current partners in non-embryonic stem cell research, and possibly identify new implementation partners for future … Continue reading

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UW scientists advance stem cell research

Posted: Published on March 16th, 2013

For the first time, University of Wisconsin-Madison researchers successfully implanted stem cells generated from skin cells into the region of a monkeys brain that was affected by Parkinsons disease, according to a study released Thursday. UW-Madison neuroscience professor Su-Chun Zhang, the lead researcher on the project, extracted cells from three monkeys skin and turned them into stem cells, which are cells that have not yet been differentiated to fit a specific purpose in the body. In his research Zhang changed the Induced Pluripotent Stem cells, derived from non-embryonic cells, into the dopamine-creating cells and implanted in an area of the monkeys brains that contained a lesion causing Parkinsons disease. Parkinsons disease is a degenerative disorder of the central nervous system, which results from the death of dopamine-creating cells. It causes behavioral and cognitive problems, including shaking, dementia and slow movement, and currently has no cure. One of the major setbacks in previous stem cell research was immune rejection, which occurs when a patients body rejects stem cells because they come from another source. This research marks an important step in solving the issue, Zhang said, because his research created stem cells from the monkeys own body, which prevents immune rejection. … Continue reading

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Stem Cell Therapeutics Closes $3.1 Million Financing

Posted: Published on March 16th, 2013

TORONTO, ONTARIO--(Marketwire - March 15, 2013) - NOT FOR DISSEMINATION IN THE UNITED STATES OR FOR DISTRIBUTION TO U.S.NEWSWIRE SERVICES Stem Cell Therapeutics Corp. (TSX VENTURE:SSS)("SCT"), a life sciences company developing stem cell-related technologies, announced today that it has closed its previously announced prospectus offering of 12,315,000 units ("Units") at a price of $0.25 per Unit for the aggregate gross proceeds of $3,078,750. Each Unit is comprised of one common share and one common share purchase warrant (the "Warrant"). Each Warrant entitles the holder to purchase an additional common share for $0.40 for a period of 60 months following the closing of the offering. Euro Pacific Canada Inc. acted as the agent and Bloom Burton & Co., as a selling firm for the offering. The purpose of the offering is to provide the resources necessary to conclude the acquisition of Trillium Therapeutics Inc. by SCT, announced February 4th, 2013, and to trigger a condition precedent to permit the exercise of the option by SCT to acquire the license to the Tigecycline intellectual property from the University Health Network/MaRS Innovation, Toronto, announced November 7th, 2012. The assets expected to be acquired and licensed will conclude the initial step of SCT's published … Continue reading

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International Stem Cell Corporation Technology for Deriving Neuronal Cell Published by Nature Publishing Group

Posted: Published on March 16th, 2013

CARLSBAD, CA--(Marketwire - Mar 15, 2013) - International Stem Cell Corporation ( OTCQB : ISCO ) (www.internationalstemcell.com), a California-based biotechnology company focused on the therapeutic applications of human parthenogenetic stem cells, announced today the publication of its breakthrough method of deriving neuronal cells for the treatment of Parkinson's disease in Scientific Reports, a primary research publication from the publishers of Nature. Parkinson's disease (PD) is a common neurodegenerative disorder caused by a progressive loss of dopamine-producing neurons resulting in gradual dysfunction of the motor system. Pharmacological treatments are useful in the relatively early stage of the disease, but the continuous use of pro-dopaminergic medication eventually becomes ineffective and can worsen some of the motor symptoms. ISCO is developing a treatment for PD based on replacing the lost neurons with new neuronal cells derived from human parthenogenetic stem cells (hpSC). To this end ISCO has developed a sophisticated and efficient manufacturing process for neuronal cells which has now been published in the peer-reviewed journal Scientific Reports. The paper describes the technology, developed by ISCO's R&D team, for producing highly pure populations of GMP-grade neuronal cells suitable for pre-clinical studies and clinical trials. The neuronal cells created using this approach are further … Continue reading

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Professor: Genetic mutations can amplify drug addictions

Posted: Published on March 16th, 2013

Published: Thursday, March 14, 2013 at 5:13 p.m. Last Modified: Thursday, March 14, 2013 at 5:13 p.m. That some people are genetically prone to addictions is nothing new, but some scientists have expressed surprise at the degree of addictive tendencies. For example, if you have a high-risk genotype for marijuana addiction and also suffer from neuroticism or anxiety, you have an eight- to nine-fold risk of becoming addicted to marijuana. What's more, in-utero exposure to the drug might induce long-term addictive tendencies at least in rats. Professor Yasmin Hurd, a neuroscientist and professor of psychiatry at the Ichan School of Medicine in Mount Sinai, N.Y., cited these examples Thursday in a talk titled "The Vulnerable Brain: Understanding the Neurobiology of Addiction Risk." Her talk was one of two expert lectures delivered Thursday at the McKnight Brain Institute as part of brain awareness week, a global campaign to raise awareness of the brain. Early addiction research in neuroscience focused on dopamine dependence the "feel-good" chemical released abundantly in the brain when people use drugs. The flip side of this immediate surge is a long-term lessening of dopamine actually produced by the brain, which over time, decreases a person's ability to experience … Continue reading

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