Tag: "hormone" at medical news
System that regulates blood pressure may also affect aging
...ood vessels. Angiotensin II is balanced by another hormone
that is believed to "brake" high blood pressure. "It's becoming apparent that this system is involved in more than just blood pressure," said Kritchevsky. The Wake Forest Baptist research is the first to show that the system may be associated with p...
Ventricular regulation may be key to preventing heart failure
...ls of atrial natriuretic peptides (ANP), a cardiac hormone
that regulates blood pressure, are also noted in this experiment. The researchers conclude that "a rise in atrial rate results in an additional increase of circulating ANP, but only in the presence of elevated atrial pressures." ANP levels also ris...
Estrogen-associated COX-2 pathways explain protection from heart disease in female mice
...so raise the possibility of an interaction between hormone
replacement therapy and drugs which inhibit COX-2, including traditional NSAIDs. Of particular concern for selective inhibitors of COX-2 would be for patients with juvenile arthritis, which involves mostly long-term drug use in young, premenopausal w...
Can we learn new tricks from an old drug in treating heart attacks?
...works by blocking release of the "fight or flight" hormone
adrenaline, preventing activation of the sympathetic nervous system. Given intravenously, bretylium was once the mainstay of treatment for ventricular fibrillation and other heart rhythm disorders after AMI, although in recent years it has been large...
DHEA may help decrease abdominal fat in elderly persons
...change is the decline in production of the adrenal hormone
dehydroepiandrosterone (DHEA). The blood level of DHEA, most of which is present in the sulfated form (DHEAS), peaks at approximately 20 years of age and declines rapidly and markedly after age 25. DHEA administration has been shown to reduce accumu...
News tips for Tuesday, November 9, 2004
...ngs support the potential clinical use of the male hormone
to treat men with CAD. 8:30 a.m. Abstract 3721 Cardiovascular risk factor trends: there's good news and not-so-good news. Researchers taking a fresh look at behavioral factors affecting cardiovascular disease risk find one trend that's good, a...
Abdominal fat decreases, insulin action improves when elderly take hormone
...ity School of Medicine in St. Louis found that the hormone
dehydroepiandrosterone (DHEA) significantly reduced abdominal fat and improved insulin action. This finding suggests that DHEA may be able to counter the increase in abdominal fat and accompanying increased risk for diabetes that very often occurs as...
Women's reproductive factors and the risk of rheumatoid arthritis
...o the onset of RA and the impact of postmenopausal hormone
replacement therapy on the risk of disease. Their findings, published in the November 2004 issue of Arthritis & Rheumatism http://www.interscience.wiley.com/journal/arthritis), strongly support the lasting benefits of breastfeeding in protecting agai...
American Thoracic Society journal news tips for November 2004 (first issue)
... daily peak expiratory flow rate. (Melatonin is a hormone
secreted by the human pineal gland, a tiny endocrine gland situated in the center of the brain. It is believed to play an important role in the regulation of sleep cycles.) Even when asthma is well-controlled, the investigators said that the drugs...
Molecular clock genes influence metabolism of sugar and dietary fats
...nctions, including regulating body temperature and hormone
levels, vary throughout the day and night. Some of...time how the master clock in the brain could use a hormone
to control such a peripheral clock. During the course of the group's research they foun...
Breast cancer risk, prognosis and weight gain reduced with physical activity
...actors related to breast cancer prognosis, such as hormone
levels and body fat. Any woman living in Connecticut, diagnosed with breast cancer within the past five years and who is interested in participating, should contact the study coordinator at 203-764-8426....
Smoking affects same 'feel good' brain chemical system as heroin
...and how that response is affected by variations in hormone
levels and genetic makeup. The U-M team's PET scan method doesn't show the flow of opioids directly, but rather the status of tiny receptors on the surface of brain cells. These receptors, called mu-opioid receptors, act like locks that can only be o...
New insights into hormone therapy highlight when estrogen best aids brain
SAN DIEGO -- October 26, 2004New hormone
therapy studies demonstrate estrogen's ability to ...es examine the value of cyclical versus continuous hormone
administration. The new research was presented at the 34th Society for Neuroscience annual meeting i...
Gender and sex hormones affect the brain's pain response and more, according to new studies
...ble because of the cyclical nature of reproductive hormone
production in females, Becker points out. The mens...morphine will be difficult to ameliorate by simple hormone
treatment--with testosterone, for example--in adulthood," says Craft. "Instead, these sex difference...
Mothers have brains primed for care
...he brain and body to influence behavior and stress hormone
output. Welch's laboratory hopes to develop treatments that mimic the actions and interactions of these neuropeptides on the body and brain to reverse behavioral and developmental disorders. This work challenges a widespread assumption that severe b...
Estrogen or stimulating environment boost memory
...uman data and might help to explain why studies of hormone
replacement therapy (HRT) do not show beneficial effects for all women. Most studies of HRT use very well-educated women. These results might spur researchers to include a broader population with a greater variation in education and socioeconomic sta...
Teenage hormone therapy to reduce adult height of tall girls linked to reduced fertility
...group); the other half were assessed but not given hormone
treatment (the control group). After adjustment f...aken fertility drugs compared with women not given hormone
therapy. In terms of the time to first pregnancy, women who had received oestrogen therapy in adoles...
Antipsychotic drugs linked to insulin resistance in children
..., and liver cells do not properly use insulin, the hormone
produced by the pancreas that helps cells absorb glucose and provides a source of energy to the body. The pancreas tries to keep up with the demand for insulin by producing more. Eventually, the pancreas cannot keep up with the body's need for insuli...
Soy likely doesn't affect fertility, according to research in monkeys
...ual cycle, including length, amount of bleeding or hormone
levels," said Kaplan. "This suggests that any protection that soy may provide against breast cancer does not come from changes in the menstrual cycle." He said consumption of a high-soy diet probably would not compromise fertility, although fur...
High fiber intake reduces estrogen levels in Latina women, say Keck School of Medicine researchers
...the Keck School of Medicine of USC-looked at blood hormone
levels of 252 Latina women participating in the Mu... intake increased in the women studied, so did the hormone
levels. "However, when dietary fiber and fat are both included in the statistical model, only dietar...
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