It can take a year or longer of trial and error for a doctor to determine if a man is infertile but new research by Michael Skinner, a Washington State University reproductive biologist, could change that.
Nov 14, 2019
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Patients with advanced breast cancer that has spread to the skin are likely to cause more harm than good if they use complementary therapies to treat their skin lesions.
Nov 14, 2019
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A transcription factor that aids neuron function also appears to enable a cell conversion in the prostate gland that can make an already recurrent cancer even more deadly, scientists say.
Nov 13, 2019
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As day turns into night, and night turns into day, the vast majority of living organisms follow a fixed circadian rhythm that controls everything from sleep needs to body temperature.
Nov 08, 2019
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For the first time, a study led by researchers at Helmholtz Zentrum München and the German Center for Diabetes Research (DZD) shows how glucocorticoid hormones, such as cortisol, control sugar and fat levels differently ...
Nov 07, 2019
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Women are not only underrepresented in exercise-related studies, but may be receiving incomplete information about physical activity because of a now-debunked belief that hormonal fluctuations linked to menstrual cycles can ...
Nov 06, 2019
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A woman's decision to undergo mastectomy for breast cancer relies on communication with her surgeon and, in addition, often draws on recommendations from a "multidisciplinary team" (MDT) of doctors from different specialties ...
Nov 06, 2019
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A team of neuroscientists led by Professor Christiana Ruhrberg (UCL, UK) and Professor Anna Cariboni (University of Milan, Italy) have found two molecules that work together to help set up the sense of smell and pave the ...
Nov 05, 2019
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Men with higher levels of 'free' testosterone and a growth hormone in their blood are more likely to be diagnosed with prostate cancer, according to research presented at the 2019 NCRI Cancer Conference.
Nov 01, 2019
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Psychologists at Ruhr-Universität Bochum have studied in what way hormonal contraceptives affect the efficacy of anxiety therapy. They demonstrated that women who were on the pill benefitted less from exposure therapy than ...
Oct 29, 2019
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Hormones (from Greek ὁρμή - "impetus") are chemicals released by cells that affect cells in other parts of the body. Only a small amount of hormone is required to alter cell metabolism. It is essentially a chemical messenger that transports a signal from one cell to another. All multicellular organisms produce hormones; plant hormones are also called phytohormones. Hormones in animals are often transported in the blood. Cells respond to a hormone when they express a specific receptor for that hormone. The hormone binds to the receptor protein, resulting in the activation of a signal transduction mechanism that ultimately leads to cell type-specific responses.
Endocrine hormone molecules are secreted (released) directly into the bloodstream, while exocrine hormones (or ectohormones) are secreted directly into a duct, and from the duct they either flow into the bloodstream or they flow from cell to cell by diffusion in a process known as paracrine signalling.
This text uses material from Wikipedia, licensed under CC BY-SA
