ScienceDaily Health Headlines
for Monday, February 28, 2011
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Why chemotherapy causes more infertility in women than in men (February 28, 2011) -- For a long time a relationship between infertility and chemotherapeutic agents has been assumed. Now, the mechanism has been elucidated. Mainly women are affected because the quality control in the oocytes is different from male germ cells. As biosicentists in Germany have found out, tetramer and dimer structures in the p53 protein family play a key role. ... > full story
Ultrasound fusion imaging provides comparable accuracy for bone, soft tissue tumors (February 28, 2011) -- Biopsies using ultrasound fusion imaging for detecting bone and soft tissue cancers are safe, effective and just as accurate as conventional biopsy methods, according to a new study. ... > full story
Stress and tension do not stop fertility treatment from working, study finds (February 28, 2011) -- Women undergoing IVF or other assisted reproduction therapy can be reassured that emotional distress caused by their infertility or other life events will not prevent the treatment from working, according to new research. ... > full story
Novel methods for improved breast cancer survival (February 28, 2011) -- A quarter of all women who suffer from breast cancer are at risk of metastasis – a recurrence of the cancer. In recent years, researchers have developed a technique that can identify in advance which patients belong to this risk group. Within the next two years the method will be tested in Swedish hospitals. In the future, the technique may also be used in hospitals in other countries. ... > full story
Hip, thigh implants can raise bone fracture risk in children (February 28, 2011) -- Children with hip and thigh implants designed to help heal a broken bone or correct other bone conditions are at risk for subsequent fractures of the very bones that the implants were intended to treat, according to new research. ... > full story
Strong link found between victimization, substance abuse (February 28, 2011) -- A strong link between victimization experiences and substance abuse has been discovered by researchers. ... > full story
PCBs may affect in vitro fertilization outcomes (February 27, 2011) -- Serum polychlorinated biphenyls (PCBs) at concentrations found in the general U.S. population are associated with the failure of fertilized embryos to implant in the uterus after in vitro fertilization (IVF). This study may help explain earlier reports of impaired reproduction and increased time to pregnancy among women exposed to PCBs. ... > full story
Home urine test measures insulin production in diabetes (February 27, 2011) -- A simple home urine test has been developed which can measure if patients with type 1 and type 2 diabetes are producing their own insulin. The urine test replaces multiple blood tests in hospital and can be sent by post as it is stable for up to three days at room temperature. Avoiding blood tests will be a particular advantage for children. ... > full story
Bisphenol A exposures lower in Canadians compared to Americans (February 27, 2011) -- Health Canada's declaration that bisphenol A is a health hazard makes it unique in the world, but it must now follow through with legislation to protect people from exposure. That's the conclusion of a new analysis that found concentrations of bisphenol A in Canadians are lower than for Americans, although the reason for the difference is unknown. ... > full story
Heparin a key role player in allergy and inflammatory reactions (February 27, 2011) -- Heparin plays a key role in allergic and inflammatory reactions driven by mast cells, scientists show. The study sheds some new light on the biological function of heparin. ... > full story
High-quality care associated with lower cost in trauma (February 27, 2011) -- High-quality hospitals deliver lower-cost care to trauma patients, according to new research. The study found high-quality hospitals have death rates that are 34 percent lower, while spending nearly 22 percent less on trauma patient care than average-quality hospitals, suggesting high quality can coexist with lower cost. The reason is not clear, though. ... > full story
Protein and microRNA block cellular transition vital to metastasis (February 27, 2011) -- Like a bounty hunter returning escapees to custody, a cancer-fighting gene converts organ cells that change into highly mobile stem cells back to their original, stationary state, researchers report. ... > full story
Hashimoto’s thyroiditis can affect quality of life even when thyroid gland function is normal (February 27, 2011) -- Hashimoto’s thyroiditis (HT), an inflammatory disorder of the thyroid, is the most common cause of hypothyroidism, but a study has suggested that even when thyroid function is normal, HT may increase symptoms and decrease quality of life. ... > full story
Planning and visualization lead to better food habits (February 27, 2011) -- If you want to improve the way you eat, the best way to do so is to both make an action plan and visualize yourself carrying it out, according to researchers. ... > full story
New technology pinpoints genetic differences between cancer and non-cancer patients (February 26, 2011) -- Scientists have developed a new technology that detects distinct genetic changes differentiating cancer patients from healthy individuals and could serve as a future cancer predisposition test. ... > full story
Bone drug zoledronic acid may help prevent spread of early lung cancer (February 26, 2011) -- A drug that is currently used to help treat bone metastases in patients with lung cancer could also be useful at an earlier stage of treatment, to prevent the cancer from spreading in the first place, researchers have found. ... > full story
Making the 'irrelevant' relevant to understand memory and aging (February 26, 2011) -- Age alters memory. But in what ways, and why? These questions comprise a vast puzzle for neurologists and psychologists. A new study looked at one puzzle piece: how older and younger adults encode and recall distracting, or irrelevant, information. The results can help scientists better understand memory and aging. ... > full story
Nanotechnology may lead to new treatment of liver cancer (February 26, 2011) -- Nanotechnology may open a new door on the treatment of liver cancer, according to researchers. They used molecular-sized bubbles filled with chemotherapy drugs to prevent cell growth and initiate cell death in test tubes and mice. ... > full story
Model for managing asthma in preschoolers leads to dramatic drop in ER visits and hospitalizations (February 26, 2011) -- Nearly one in 11 preschool children in the US has been diagnosed with asthma, yet few asthma management programs are designed for parents of preschool children. A new program offers educational activities to families as well as training to community pediatric providers. Following participation in the program, 85 percent of parents reported reducing their child's asthma triggers; visits to ER departments declined sharply, as did asthma-related hospitalizations. ... > full story
Targeting T cells effectively blocks multiple sclerosis in mice (February 25, 2011) -- In an effort to develop therapeutic remedies for multiple sclerosis, scientists debate two possible interventional approaches -- but they're on opposite sides of the spectrum. Researchers however, think they have now reached a definitive conclusion as to which approach is correct, putting an end to a long-disputed issue. They found that targeting white blood cells of the immune system known as T cells is the effective approach to block the disease in an animal model of MS. ... > full story
Scientists find a new way insulin-producing cells die (February 25, 2011) -- Diabetes researchers discover another way that insulin-secreting beta cells in the pancreas can be destroyed -- by the secretions of neighboring alpha cells. ... > full story
Staring contests are automatic: People lock eyes to establish dominance (February 25, 2011) -- Imagine that you're in a bar and you accidentally knock over your neighbor's beer. He turns around and stares at you, looking for confrontation. Do you buy him a new drink, or do you try to out-stare him to make him back off? New research suggests that the dominance behavior exhibited by staring someone down can be reflexive. ... > full story
HIV makes protein that may help virus's resurgence (February 25, 2011) -- New research enhances the current knowledge of how human immunodeficiency virus type-1 (HIV-1), which causes AIDS, controls the cell cycle of cells that it infects. The new findings may shed light on how the virus reactivates after entering a dormant state, called latency. Better understanding of the biological events that revive HIV from latency may eventually lead to better treatments for people with HIV infection. ... > full story
Redesign of US donor-liver network could boost transplants by several hundred per year (February 25, 2011) -- Researchers redesigned the U.S.'s haphazard donor-liver distribution network to better account for urban and rural population differences, geographic distance, and the anticipated supply of and demand for donor livers. They calculated a rearrangement could result in up to 14 percent more people each year receiving the transplants they need. ... > full story
Obesity and diabetes are a downside of human evolution, research suggests (February 25, 2011) -- As if the recent prediction that half of Americans will have diabetes or pre-diabetes by the year 2020 isn't alarming, a new genetic discovery provides a disturbing explanation as to why: we took an evolutionary "wrong turn." In the report, scientists show that human evolution leading to the loss of function in a gene called "CMAH" may make humans more prone to obesity and diabetes than other mammals. ... > full story
New long-acting local anesthetic derived from algae effectively blocks pain in surgical patients (February 25, 2011) -- Medical researchers bringing surgical patients closer to having a long-acting local anesthetic. In a randomized, double-blind trial, patients given neosaxitoxin, a new local anesthetic derived from algae, had significantly less postoperative pain and recovered about two days sooner than those given the commonly used local anesthetic bupivacaine. ... > full story
Multiple childbirth linked to increased risk of rare, aggressive 'triple-negative' breast cancer (February 25, 2011) -- Full-term pregnancy has long been associated with a reduced risk of breast cancer, but a new study finds that the more times a woman gives birth, the higher her risk of "triple-negative" breast cancer, a relatively uncommon but particularly aggressive subtype of the disease. Conversely, women who never give birth have a 40 percent lower risk of such breast cancer. ... > full story
Maternal fructose intake impacts female and male fetuses differently (February 25, 2011) -- Maternal fructose intake during pregnancy results in sex-specific changes in fetal and neonatal endocrinology. The study also found that maternal fructose consumption may effect placental development. ... > full story
Stereotypes can deter consumer purchases (February 25, 2011) -- The perception of negative stereotyping, particularly in the areas of financial services and automobile sales and service, can cause consumers to fear being duped and forgo their purchases, according to new research. Researchers also found that the scent of vanilla helps consumers feel calmer and more assured of their transaction. ... > full story
Menopausal hot flashes may be a good sign for heart (February 25, 2011) -- A new study finds women who suffer from hot flashes when they begin menopause are at lower risk for cardiovascular events. ... > full story
Fatty liver may herald impending Type 2 diabetes (February 25, 2011) -- Individuals with fatty liver were five times more likely to develop Type 2 diabetes than those without fatty liver. This higher risk seemed to occur regardless of the patient's fasting insulin levels, which were used as a marker of insulin resistance. ... > full story
Producing clean water in an emergency (February 25, 2011) -- Chemistry researchers have taken a key step towards making a cheap, portable, paper-based filter coated with silver nanoparticles to be used in emergency situations like floods, tsunamis or earthquakes. ... > full story
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