Renin

Renin is an endoprotease (hormone-like enzyme) produced in the kidney, more specifically in the juxtaglomerular apparatus. It represents an important link in the renin-angiotensin-aldosterone system (RAAS), which helps regulate blood pressure and salt balance. Increased renin is produced when a lack of sodium in the blood or hypovolemia (decreased blood volume) is determined by the … Renin

Serotonin Neurotransmitter Function

Serotonin is one of the neurotransmitters. Its effects are mainly related to the nervous system (mood), the cardiovascular system (vasoconstriction – vasoconstriction) and the intestine (intestinal peristalsis ↑).It is synthesized from the amino acid tryptophan. To check serotonin levels in the blood, the breakdown product 5-hydroxyindoleacetic acid (HIES) is determined from urine. The procedure Material … Serotonin Neurotransmitter Function

Serum Aldosterone-Renin Quotient

The serum aldosterone–renin quotient (ARQ; aldosterone-renin ratio, ARR) is considered a very reliable screening parameter in the diagnosis of Conn syndrome. Conn syndrome is a form of primary hyperaldosteronism. It is characterized by an overproduction of aldosterone in the adrenal cortex due to an adenoma (benign tumor). Aldosterone is a mineralocorticoid that regulates fluid and … Serum Aldosterone-Renin Quotient

Somatotropic Hormone (STH)

Somatotropic hormone (STH; synonyms: somatotropic hormone; HGH or hGH (human growth hormone); HGH-N; HGH 1; GH (growth hormone); somatotropin ; somatropin; growth hormone) is a hormone responsible for body growth. It does not act directly for the most part, but indirectly via the somatomedins such as insulin-like-growth-factor (IGF-1). Other metabolic functions include: Protein biosynthesis (protein … Somatotropic Hormone (STH)

17-Hydroxy Progesterone

17-Hydroxy-progesterone (synonyms: 17-OH-progesterone; 17-OHP) is a hormone from the group of progestins (progestins are steroids; the most important representatives are pregnandiol, progesterone, and pregnenolone). 17-Hydroxy-progesterone is produced in the adrenal gland and the gonads (gonads or sex glands; in men, the testes/testes; in women, the ovaries/ovaries). It represents an intermediate in the synthesis of several … 17-Hydroxy Progesterone