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Titolo:
Effects of beta-carotene, selenium and vitamin A on in vitro polymorphonuclear leukocytic activity in peripartal buffalo (Bubalus bubalus)
Autore:
Ramadan, AA; Ghoniem, AA; Hassan, HM; Youssef, AE;
Indirizzi:
Anim Reprod Res Inst, Immunobiol & Immunopharmacol Unit, Giza, Egypt Anim Reprod Res Inst Giza Egypt iol & Immunopharmacol Unit, Giza, Egypt Anim Reprod Res Inst, Reprod Dis Dept, Giza, Egypt Anim Reprod Res Inst Giza Egypt Res Inst, Reprod Dis Dept, Giza, Egypt Anim Hlth Res Inst, Giza, Egypt Anim Hlth Res Inst Giza EgyptAnim Hlth Res Inst, Giza, Egypt
Titolo Testata:
THERIOGENOLOGY
fascicolo: 3, volume: 55, anno: 2001,
pagine: 693 - 704
SICI:
0093-691X(20010201)55:3<693:EOBSAV>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
STAPHYLOCOCCUS-AUREUS; NEUTROPHIL FUNCTION; DAIRY-COWS; SUPEROXIDE; INVITRO; RETINOIDS; PHAGOCYTOSIS; RELEASE; CATTLE; BLOOD;
Keywords:
neutrophils; beta-carotene; selenium; vitamin A; periparturient buffalo;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
39
Recensione:
Indirizzi per estratti:
Indirizzo: Ramadan, AA Anim Reprod Res Inst, Immunobiol & Immunopharmacol Unit, 5 Hadayk El AhramSt,POB 12556, Giza, Egypt Anim Reprod Res Inst 5 Hadayk El Ahram St,POB 12556 Giza Egypt
Citazione:
A.A. Ramadan et al., "Effects of beta-carotene, selenium and vitamin A on in vitro polymorphonuclear leukocytic activity in peripartal buffalo (Bubalus bubalus)", THERIOGENOL, 55(3), 2001, pp. 693-704

Abstract

The effect of different concentrations of three antioxidan s on phagocyticand kill activities of blood polymorphonuclear leukocytes (PMN) isolated from buffaloes during the peripartum period (4 weeks before to 7 weeks afterparturition) was investigated in this study. Two concentrations of beta -carotene and vitamin A (10(-6) and 10(-5) M) and one concentration of Se (10(-9) M) were used. Phagocytic activity of PMN treated with beta -carotene (10(-6) M) significantly enhanced (P < 0.05) after parturition (Week 0 untilWeek 3), whereas the kill activity of the same cells significantly (P < 0.05) increased before and after parturition (at Weeks -4, -3, -2, 0, 1, 2 and 3). The concentration of beta -carotene (10(-5) M) enhanced phagocytosis of PMN only at Weeks 0 and 1 and kill activity at Weeks -4, -3, -2, 0, and 1. Selenium(10(-9) M) significantly (P < .0.05) enhanced phagocytic activity of PMN starting from parturition (Week 0) until Week 3 postpartum. Kill activity increased significantly both before (Weeks -4, -3 and -2) and after(Weeks 0, 1, 2, 3 and 4) parturition. Vitamin A (10(-6) M) significantly enhanced phagocytic activity of PMN at Weeks 0, 1, and 2, whereas, the concentration of <beta>-carotene (10(-5) M) increased phagocytic activity only at Week 0. Kill activity of PMN increased significantly (P < 0.05) at Weeks -1 and 0 (10(-6) M). These results demonstrate that <beta>-carotene and selenium significantly enhanced phagocytic and kill activities of PMN isolatedfrom buffaloes around parturition in vitro. Vitamin A enhanced phagocytosis and kill activities but not to the same extent as beta -carotene and selenium. Apparently, the in vitro killing activity of PMN is a distinctive function from phagocytosis and both activities may be enhanced by the use of essential nutrients, especially during the peripartum period. Moreover, beta-carotene is more effective as an antioxidant than vitamin A in enhancing the activities of phagocytic cells. (C) 2001 by Elsevier Science Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 31/03/20 alle ore 19:37:26