At least six (and possibly more) aquaporins are expressed in the kidney (55). these renal aquaporins, which include aqp1, aqp2, aqp3, aqp4, aqp6 and aqp7, are differentially and strategically distributed along the nephron (41-43) to facilitate water reabsorption and urine concentration.. Therefore, the aim of the study was to determine the expression and aqps location in the nephron segment in the bovine kidney by immunohistochemistry and western blot. the distribution of a total of 8 aquaporins was determined as a result of the conducted experiments.. In the kidney, water permeability is high in proximal tubule and thin descending limb of henle, and regulated by vasopressin in collecting duct. the author's laboratory has studied the role of aquaporins in organ physiology using transgenic knockout mice lacking specific aquaporins..
Nephron structure and immunohistochemical localization of ion pumps and aquaporins in the kidney of frogs inhabiting different environments. uchiyama m(1), yoshizawa h. author information: (1)department of biology, faculty of science, toyama university, gofuku 3190, toyama 930-8555, japan.. Aquaporins, also called water channels, are channel proteins from a larger family of major intrinsic proteins that form pores in the membrane of biological cells, mainly facilitating transport of water between cells. the cell membranes of a variety of different bacteria, fungi, animal and plant cells contain aquaporins through which water can flow more rapidly into and out of the cell than by. The nephron is the microscopic structural and functional unit of the kidney.it is composed of a renal corpuscle and a renal tubule.the renal corpuscle consists of a tuft of capillaries called a glomerulus and an encompassing bowman's capsule.the renal tubule extends from the capsule. the capsule and tubule are connected and are composed of epithelial cells with a lumen..
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