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Testosterone is a steroid hormone from the androgen group. In mammals, testosterone is primarily secreted in the testes of males and the ovaries of females, although small amounts are also secreted by the adrenal glands
New assessment tool under development can help detect physical traits of Klinefelter syndrome

New assessment tool under development can help detect physical traits of Klinefelter syndrome

Klinefelter syndrome is the most common disorder of the male sex chromosomes, yet is rarely diagnosed in children. A new assessment tool is being developed by researchers at Columbia University Medical Center (CUMC) to help pediatricians detect the physical traits of the syndrome. The tool could pave the way for early interventions that prevent and treat a range of physical, psychological, social, and cognitive impairments. [More]
New genome-wide association study sheds light on the underlying biology of polycystic ovary syndrome

New genome-wide association study sheds light on the underlying biology of polycystic ovary syndrome

Polycystic ovary syndrome (PCOS) has been passed down in many families for generations -- causing reproductive and metabolic health problems for millions of women around the world. Yet, its cause remains unknown despite more than 80 years of research since the disorder was first described in 1935. [More]
Hi-Tech acquires LG Sciences brand of Sports Nutrition and Bodybuilding products

Hi-Tech acquires LG Sciences brand of Sports Nutrition and Bodybuilding products

Hi-Tech Pharmaceuticals, a leading global provider of Sports Nutrition, Weight loss products, and Contract Manufacturing services, and LG Sciences, one of the premier Sports Nutrition and Bodybuilding brands in the United States, today announced that Hi-Tech has acquired LG Sciences brand of Sports Nutrition products and Bodybuilding products. [More]
Chronic fatigue a long-term problem for testicular cancer survivors

Chronic fatigue a long-term problem for testicular cancer survivors

A Norwegian population-based study reported in the Annals of Oncology has found a rise in the incidence of chronic fatigue a decade or more after treatment in testicular cancer survivors. [More]
Testosterone administration not associated with atherosclerosis progression among older men

Testosterone administration not associated with atherosclerosis progression among older men

Among older men with low testosterone levels, testosterone administration for 3 years compared with placebo did not result in a significant difference in the rates of change in atherosclerosis (thickening and hardening of artery walls), nor was it associated with improved overall sexual function or health-related quality of life, according to a study in the August 11 issue of JAMA. [More]
TEAAM trial finds that testosterone has no effect on atherosclerosis progression

TEAAM trial finds that testosterone has no effect on atherosclerosis progression

Testosterone sales have grown rapidly over the last decade, but few studies have examined the long-term effects of taking testosterone on cardiovascular health and other important outcomes. This week, investigators from Brigham and Women's Hospital report the results of the Testosterone's Effects on Atherosclerosis Progression in Aging Men (TEAAM) trial in the Journal of the American Medical Association. [More]
New VA study demonstrates cardiovascular benefits of testosterone replacement therapy

New VA study demonstrates cardiovascular benefits of testosterone replacement therapy

A Veterans Affairs database study of more than 83,000 patients found that men whose low testosterone was restored to normal through gels, patches, or injections had a lower risk of heart attack, stroke, or death from any cause, versus similar men who were not treated. [More]
TSRI study shows antioxidants slow aging process, reduce risk of infection

TSRI study shows antioxidants slow aging process, reduce risk of infection

Scientists from the Florida campus of The Scripps Research Institute have shown how aging cripples the production of new immune cells, decreasing the immune system’s response to vaccines and putting the elderly at risk of infection. [More]
Hormones play dual role in unethical behavior

Hormones play dual role in unethical behavior

Hormones play a two-part role in encouraging and reinforcing cheating and other unethical behavior, according to research from Harvard University and The University of Texas at Austin. [More]
New UTMB study finds no association between testosterone therapy and blood clots in veins

New UTMB study finds no association between testosterone therapy and blood clots in veins

A new study from The University of Texas Medical Branch at Galveston of more than 30,000 commercially insured men is the first large comparative analysis to show that there is no link between testosterone therapy and blood clots in veins. The study found that middle-aged and older men who receive testosterone therapy are not at increased risk of this illness. [More]
Testosterone, cortisol hormones may destabilise financial markets by making traders take more risks

Testosterone, cortisol hormones may destabilise financial markets by making traders take more risks

The hormones testosterone and cortisol may destabilise financial markets by making traders take more risks, according to a study. Researchers simulated the trading floor in the lab by having volunteers buy and sell assets among themselves. They measured the volunteers' natural hormone levels in one experiment and artificially raised them in another. [More]
UCSD researchers report that statins make women aggressive, but men calmer

UCSD researchers report that statins make women aggressive, but men calmer

Statins are a hugely popular drug class used to manage blood cholesterol levels and reduce the risk of heart disease. Previous studies had raised questions about adverse behavioral changes with statins, such as irritability or violence, but findings with statins have been inconsistent. In the first randomized trial to look at statin effects on behavior, researchers at the University of California, San Diego School of Medicine report that aggressive behavior typically declined among men placed on statins (compared to placebo), but typically increased among women placed on statins. [More]
Men referred for borderline testosterone levels have much higher rates of depression than general population

Men referred for borderline testosterone levels have much higher rates of depression than general population

Researchers at the George Washington University, led by Michael S. Irwig, M.D., found that men referred for tertiary care for borderline testosterone levels had much higher rates of depression and depressive symptoms than those of the general population. [More]
New species of tRNA-derived small RNAs contribute to cell proliferation in cancer

New species of tRNA-derived small RNAs contribute to cell proliferation in cancer

Since their discovery in the 1950s, transfer RNAs (tRNAs) have been best known for their role in helping the cell make proteins from messenger RNA templates. However, recent studies have led to a previously-unsuspected concept that tRNAs are not always the end product; namely, they further serve as a source of small RNAs. [More]
TSRI scientists devise powerful set of chemical methods to explore protein biology

TSRI scientists devise powerful set of chemical methods to explore protein biology

Scientists at The Scripps Research Institute (TSRI) have devised a powerful set of chemical methods for exploring the biology of proteins. [More]
Men who use finasteride to treat benign prostate enlargement experience worsening ED

Men who use finasteride to treat benign prostate enlargement experience worsening ED

Men with benign prostate enlargement who used finasteride (also known as proscar and propecia) to treat their condition, experienced worsening erectile dysfunction (ED) that did not resolve with continued treatment. In addition, they experienced a reduction in their testosterone levels leading to hypogonadism (little to no production of sex hormones). [More]
Differences in brain expression of RORA protein levels may lead to sex bias in autism

Differences in brain expression of RORA protein levels may lead to sex bias in autism

George Washington University researcher Valerie Hu, Ph.D., has found an important sex-dependent difference in the level of RORA protein in brain tissues of males and females. Specifically, females without autism have a slightly higher level of RORA in the frontal cortex of the brain than males without autism, while the levels of the protein are comparably lower in the brain of both males and females with autism. [More]
ESSA Pharma reports net loss of $5.9 million for second quarter 2015

ESSA Pharma reports net loss of $5.9 million for second quarter 2015

ESSA Pharma Inc. today reported financial results for the second quarter and three and six months ended March 31, 2015. Amounts, unless specified otherwise, are expressed in Canadian dollars and in accordance with International Financial Reporting Standards. [More]
Novel discovery offers new insight into why women more likely than men to develop MS

Novel discovery offers new insight into why women more likely than men to develop MS

An innocent mistake made by a graduate student in a Northwestern Medicine lab (she accidentally used male mice instead of female mice during an experiment) has led scientists to a novel discovery that offers new insight into why women are more likely than men to develop autoimmune diseases such as multiple sclerosis (MS). [More]
GnRH infusion recommended for adolescent hypogonadotropic hypogonadodism

GnRH infusion recommended for adolescent hypogonadotropic hypogonadodism

Pulsatile gonadotropin-releasing hormone may be more effective than human chorionic gonadotropin for the treatment of peripubescent boys with hypogonadotropic hypogonadodism, say Chinese researchers. [More]
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