Hormones or sexual experience? Which of these is crucial for the onset of puberty? It seems that when rats are touched on their genitals, their brain changes and puberty accelerates. In a new study publishing September 21 ...
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The discovery of a puddle of mouse urine seems like a strange scientific "eureka" moment.
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A group of steroid hormones could provide new insight into the bone loss and deterioration that occurs with aging, researchers at the Medical College of Georgia at Augusta University report.
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There is an increased risk of thyroid cancer associated with lower-than-normal thyroid hormone levels, a finding that could have a major impact on patients fighting the disease.
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A new study by researchers at the University of Maryland School of Medicine (UM SOM) has uncovered how inflammation contributes to a key feature of diabetes, the body's inability to metabolize glucose, a condition known as ...
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The Women's Health Initiative (WHI) hormone therapy trials tested the most common formulations of hormone therapy - estrogen and progestin, and estrogen alone - to assess the benefits and risks of menopausal hormone therapy ...
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Patients with high risk prostate cancer starting long-term hormone therapy may benefit from two new treatments, according to late-breaking results from the STAMPEDE trial presented at the ESMO 2017 Congress in Madrid. (1)
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For more than a century, physicians have anecdotally noted that patients with an underactive thyroid—often caused by iodine deficiency—tended to also have anemia. But the link between thyroid hormone and red blood cell ...
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A study led by researchers from Macquarie University has unveiled another way to detect whether a person has taken human growth hormone (GH), by tracking protein levels. Specifically, the researchers used proteomics – the ...
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Around 75% of children and adults with Attention Deficit Hyperactivity Disorder (ADHD) also have sleep problems, but until now these have been thought to be separate issues. Now a in a pulling together of the latest research, ...
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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
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