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Aldosterone stimulates Na + and water reabsorption from the gut, salivary and sweat glands in exchange for K +. Aldosterone stimulates secretion of H + via the H+/ATPase in the intercalated cells of the cortical collecting tubules; Aldosterone upregulates expression of NCC in the distal convoluted tubule chronically and its activity acutely. [18]
Aldosterone acts on the kidneys to provide active reabsorption of sodium and an associated passive reabsorption of water, as well as the active secretion of potassium in the principal cells of the cortical collecting tubule and active secretion of protons via proton ATPases in the lumenal membrane of the intercalated cells of the collecting tubule.
12401 Ensembl ENSG00000277405 ENSG00000170099 ENSMUSG00000060807 UniProt P08185 Q06770 RefSeq (mRNA) NM_001756 NM_007618 RefSeq (protein) NP_001747 NP_031644 Location (UCSC) Chr 14: 94.3 – 94.32 Mb Chr 12: 103.61 – 103.62 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Transcortin, also known as corticosteroid-binding globulin (CBG) or serpin A6, is a protein produced in the ...
5) and aldosterone (C 21 H 28 O 5) (cortisone and aldosterone are isomers). The main corticosteroids produced by the adrenal cortex are cortisol and aldosterone. [1] The etymology of the cortico-part of the name refers to the adrenal cortex, which makes these steroid hormones. Thus a corticosteroid is a "cortex steroid". [citation needed]
stimulates contractility in the heart, causes vasodilation, increases glycogenolysis, lowers arterial blood pressure and relaxes the smooth muscle of trachea, stomach and gall bladder: 63 Guanylin: GN Peptide gut guanylate cyclase 2C (heat stable enterotoxin receptor) regulates electrolyte and water transport in intestinal epithelia. 64 Uroguanylin
Tubular secretion occurs simultaneously during re-absorption of filtrate. Substances, generally produced by body or the by-products of cell metabolism that can become toxic in high concentration, and some drugs (if taken). These all are secreted into the lumen of renal tubule. Tubular secretion can be either active or passive or co-transport.
Angiotensin II also stimulates the secretion of the hormone aldosterone [6] from the adrenal cortex. Aldosterone causes the renal tubules to increase the reabsorption of sodium which in consequence causes the reabsorption of water into the blood, while at the same time causing the excretion of potassium (to maintain electrolyte balance).
For example, aldosterone functions to raise blood sodium levels and lower blood potassium levels by targeting the kidneys. Specifically, it binds receptors of cells that comprise the distal tubules of the kidneys which then stimulate ion channels to conserve sodium and excrete potassium. [3] Additionally, the ion gradient initiates conservation ...