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HORMONES

A hormone (from the Greek participle “ὁρμῶν”) is any member of a class of signaling molecules produced by glands in multicellular organisms that are transported by the circulatory system to target distant organs to regulate physiology and behaviour. Hormones have diverse chemical structures, mainly of 3 classes: eicosanoids, steroids, and amino acid derivatives (amines, peptides, and proteins). The glands that secrete hormones comprise the endocrine signaling system. The term hormone is sometimes extended to include chemicals produced by cells that affect the same cell (autocrine or intracrine signalling) or nearby cells (paracrine signalling).

Hormones are used to communicate between organs and tissues for physiological regulation and behavioral activities, such as digestion, metabolism, respiration, tissue function, sensory perception, sleep, excretion, lactation, stress, growth and development, movement, reproduction, and mood.Hormones affect distant cells by binding to specific receptor proteins in the target cell resulting in a change in cell function. When a hormone binds to the receptor, it results in the activation of a signal transduction pathway. This may lead to cell type-specific responses that include rapid non-genomic effects or slower genomic responses where the hormones acting through their receptors activate gene transcription resulting in increased expression of target proteins. Amino acid–based hormones (amines and peptide or protein hormones) are water-soluble and act on the surface of target cells via second messengers; steroid hormones, being lipid-soluble, move through the plasma membranes of target cells (both cytoplasmic and nuclear) to act within their nuclei.

Hormone secretion may occur in many tissues. Endocrine glands are the cardinal example, but specialized cells in various other organs also secrete hormones. Hormone secretion occurs in response to specific biochemical signals from a wide range of regulatory systems. For instance, serum calcium concentration affects parathyroid hormone synthesis; blood sugar (serum glucose concentration) affects insulin synthesis; and because the outputs of the stomach and exocrine pancreas (the amounts of gastric juice and pancreatic juice) become the input of the small intestine, the small intestine secretes hormones to stimulate or inhibit the stomach and pancreas based on how busy it is. Regulation of hormone synthesis of gonadal hormones, adrenocortical hormones, and thyroid hormones is often dependent on complex sets of direct influence and feedback interactions involving the hypothalamic-pituitary-adrenal (HPA), -gonadal (HPG), and -thyroid (HPT) axes.

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Brand: SWANSON
Often, people say "take pregnenolone and keep youth in yourself". Although it sounds like a medicine for pregnant women, pregnenolone has nothing to do with motherhood. The product of Swanson Ultra DHEA & Pregnenolone Complex helps increase the ..
63.00€
WHAT IS GESTODETTE AND WHAT TO USE Gestodette coated tablets (called as Gestodet) is an oral contraceptive containing a combination of two female sex hormones. It can be used to prevent unwanted pregnancy. Both hormones are etinilestradiol (has an ..
25.00€
Brand: BAYER
WHAT IS GESTODETTE AND WHAT TO USE  Gestodette coated tablets (called as Gestodet) is an oral contraceptive containing a combination of two female sex hormones. It can be used to prevent unwanted pregnancy.  Both hormones are etinilestrad..
55.00€
What is Lindinet 30 and what to use Lindinet 30 for oral contraceptive, a representative of a group of medicines, often referred to as "the tablet". Lindinet 30 contains two types of hormones: estrogen (etinilestradiol) and progestagen (gestodene). ..
19.00€
What is Miligest and what is it used for? Milligest is a three-phase, combined oral contraceptive containing synthetic follicular and luteal hormones and used to prevent unwanted pregnancy. Each pack of three-phase contraceptive contains coated tab..
21.00€
Action: The main ingredient in the dietary supplement is docosahexaenoic acid (DHA), which is an indispensable omega-3 fatty acid. The human body produces it with the help of another omega-3 fatty acid - an alphalinole. Dokosahexaenoic acid (DHA) i..
79.00€
Nervous outbursts, irritability and depressive states, severe headaches, painful breasts, increased appetite, fluid retention, swollen stomach ... Most often these symptoms result from the interaction between neurotransmitters and certain hormones as..
38.00€
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