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Titolo:
Red blood cells from the South American rattlesnake (Crotalus durissus terrificus) regulate volume incompletely following osmotic shrinkage and swelling in vitro
Autore:
Koldkjaer, P; Wang, T; Taylor, TW; Abe, AS;
Indirizzi:
Odense Univ, Inst Biol, Ctr Resp Adaptat, DK-5230 Odense, Denmark Odense Univ Odense Denmark DK-5230 Resp Adaptat, DK-5230 Odense, Denmark UNESP, Dept Zool, Rio Claro, SP, Brazil UNESP Rio Claro SP BrazilUNESP, Dept Zool, Rio Claro, SP, Brazil Univ Birmingham, Sch Biosci, Edgbaston, England Univ Birmingham Edgbaston England ngham, Sch Biosci, Edgbaston, England
Titolo Testata:
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR AND INTEGRATIVE PHYSIOLOGY
fascicolo: 1, volume: 127, anno: 2000,
pagine: 49 - 54
SICI:
1095-6433(200009)127:1<49:RBCFTS>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
K-CL COTRANSPORT; TRANSPORT-SYSTEMS; ANISOTONIC MEDIA; NA/H EXCHANGE; POTASSIUM; ERYTHROCYTES; MECHANISMS; NA+/H+; RESPONSES; PH;
Keywords:
reptile; snake; Crotalus durissus; red blood cell; volume regulation; osmotic swelling; osmotic shrinkage; effects of oxygenation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
22
Recensione:
Indirizzi per estratti:
Indirizzo: Koldkjaer, P Univ Liverpool, Sch Biol Sci, Derby Bldg,Brownlow St, Liverpool L69 3GS, Merseyside, England Univ Liverpool Derby Bldg,Brownlow St Liverpool Merseyside England L69 3GS
Citazione:
P. Koldkjaer et al., "Red blood cells from the South American rattlesnake (Crotalus durissus terrificus) regulate volume incompletely following osmotic shrinkage and swelling in vitro", COMP BIOC A, 127(1), 2000, pp. 49-54

Abstract

The ability of rattlesnake (Crotalus durissus terrificus) red blood cells to volume regulate in vitro has been investigated. Blood was drawn through a catheter inserted in the dorsal aorta and equilibrated to gas mixtures ofdifferent composition. Cells shrunken osmotically by increasing the extracellular osmolarity from approximate to 291 mosm l(-1) (n = 3) to approximate to 632 mosm l(-1) (calculated) only partially regulated their volume backtowards the original volume either at pH 7.51 +/- 0.05 (mean +/- S.D., n =5) or pH 7.20 +/- 0.06 (mean +/- S.D., n = 3), There was no improvement ofthe regulatory volume increase at low haemoglobin oxygen saturation. The limited volume restoration was inhibited by separate additions of amiloride (10(-4) M) or DIDS (10(-4) M) suggesting involvement of the Na+/H+ and Cl-/HCO3- exchangers. Cells that were swollen osmotically by an approximate to 30% dilution of the extracellular medium also exhibited a limited ability to recover their volume. Therefore, these cells show little ability to volume regulate when exposed to in vitro conditions that shrink or swell the cell. (C) 2000 Elsevier Science Inc. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/01/20 alle ore 10:47:12