Animal reproduction is supported by the integration of various external and internal processes. These processes include a combination of perceived sensory cues, behaviors and hormone secretion.
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Scientists from the Karolinska Institutet in Sweden and Imperial College London have shown for the first time which aspects of our immune systems are regulated by sex hormones, and the impacts this has on disease risk and ...
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Researchers at the Medical College of Georgia at Augusta University are searching for a better way to understand why many men with prostate cancer end up with Alzheimer's disease, and whether it's the standard hormone therapy ...
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The most comprehensive map of the human endometrium, the inner lining of the uterus, has been created, uncovering diverse cell types and detailing the dynamic changes these go through during the menstrual cycle.
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Thyroid hormone plays a key role in regulating a range of physiologic functions, including metabolism, temperature, heart rate, and growth. It accomplishes this impressive array of activities by interacting with almost every ...
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In a struggle that probably sounds familiar to dieters everywhere, the less a Caenorhabditis elegans (C. elegans) worm eats, the more slowly it loses fat. Now, scientists at Scripps Research have discovered why: a small molecule ...
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Scientists are finding clues on how to treat diabetes and hormone disorders in an unexpected place: a toxin from one of the most venomous animals on the planet.
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The anti-obesity medication semaglutide may help to prevent heart attacks, strokes, and other major adverse cardiovascular events (MACE) as well as death in adults with overweight or obesity who don't have diabetes, whether ...
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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.
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