Steroid hormones action

Anabolic steroid hormones are synthetic substances that are related to the male sex hormones. They have the same mechanism of action within the body. Anabolic steroid hormones stimulate the production of protein, which is used to build muscle . They also lead to an increase in the production of testosterone. Testosterone is the hormone responsible for the development of male reproductive organs and male secondary sex characteristics. Testosterone is also critical in the development of lean muscle mass. Anabolic steroid hormones also promote the release of the growth hormone which stimulates growth, especially skeletal growth.

A chemical substance secreted by an endocrine gland or group of endocrine cells that acts to control or regulate specific physiological processes, including growth, metabolism, and reproduction. Most hormones are secreted by endocrine cells in one part of the body and then transported by the blood to their target site of action in another part, though some hormones act only in the region in which they are secreted. Many of the principal hormones of vertebrates, such as growth hormone and thyrotropin, are secreted by the pituitary gland, which is in turn regulated by neurohormone secretions of the hypothalamus. Hormones also include the endorphins, androgens, and estrogens. See more at endocrine gland .

  1. Encyclopædia Britannica articles are written in a neutral objective tone for a general audience.
  2. You may find it helpful to search within the site to see how similar or related subjects are covered.
  3. Any text you add should be original, not copied from other sources.
  4. At the bottom of the article, feel free to list any sources that support your changes, so that we can fully understand their context. (Internet URLs are the best.)

The mechanism of action of the sex steroid hormones is reviewed. Bi nding of steroid hormone (estrogen, progesterone, androgen) by target tissue, translocation of the hormone-receptor complex into the nucleus, hormone-receptor interactions with chromatin, and effects of the sex steroid hormones on chromatin structure are the main topics of discussio n. In general, after the steroid hormone is bound to a cytoplasmic receptor the transfer of the hormone-receptor complex into the target cell nucleus takes place. This is where the hormone exerts its influence on gene activity. Once the steroid-receptor complex moves into the nucleus it undergoes an interaction with the deoxyribonucleic acid-nucleoprotein complex of the cell nucleus that is often referred to as chromatin. The steroid hormone may exert its influence on gene function through this interaction. Current concepts of hormone action suggest that interaction of steroid hormones leads to increased ribonucleic acid synthesis and subsequently to protein synthesis.

Steroid hormones action

steroid hormones action

The mechanism of action of the sex steroid hormones is reviewed. Bi nding of steroid hormone (estrogen, progesterone, androgen) by target tissue, translocation of the hormone-receptor complex into the nucleus, hormone-receptor interactions with chromatin, and effects of the sex steroid hormones on chromatin structure are the main topics of discussio n. In general, after the steroid hormone is bound to a cytoplasmic receptor the transfer of the hormone-receptor complex into the target cell nucleus takes place. This is where the hormone exerts its influence on gene activity. Once the steroid-receptor complex moves into the nucleus it undergoes an interaction with the deoxyribonucleic acid-nucleoprotein complex of the cell nucleus that is often referred to as chromatin. The steroid hormone may exert its influence on gene function through this interaction. Current concepts of hormone action suggest that interaction of steroid hormones leads to increased ribonucleic acid synthesis and subsequently to protein synthesis.

Media:

steroid hormones actionsteroid hormones actionsteroid hormones actionsteroid hormones actionsteroid hormones action

http://buy-steroids.org