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Titolo:
Seasonal changes in peripheral blood leukocyte functions of the turtle Mauremys caspica and their relationship with corticosterone, 17-beta-estradioland testosterone serum levels
Autore:
Munoz, FJ; Galvan, A; Lerma, M; De la Fuente, M;
Indirizzi:
Univ Complutense Madrid, Fac Ciencias Biol, Dept Fisiol Anim, E-28040 Madrid, Spain Univ Complutense Madrid Madrid Spain E-28040 Anim, E-28040 Madrid, Spain Univ Complutense Madrid, Fac Ciencias Biol, Dept Microbiol, E-28040 Madrid, Spain Univ Complutense Madrid Madrid Spain E-28040 biol, E-28040 Madrid, Spain
Titolo Testata:
VETERINARY IMMUNOLOGY AND IMMUNOPATHOLOGY
fascicolo: 1-2, volume: 77, anno: 2000,
pagine: 27 - 42
SICI:
0165-2427(20001123)77:1-2<27:SCIPBL>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
IMMUNE-SYSTEM; LYMPHOCYTE FUNCTIONS; CHALCIDES-OCELLATUS; PHYSICAL EXERCISE; CYCLIC CHANGES; SEX; INVITRO; LIZARD; CELLS; CHOLECYSTOKININ;
Keywords:
turtle; lymphocyte functions; NK activity; seasonal cycle; steroid hormones;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
52
Recensione:
Indirizzi per estratti:
Indirizzo: De la Fuente, M Univ Complutense Madrid, Fac Ciencias Biol, Dept Fisiol Anim, E-28040 Madrid, Spain Univ Complutense Madrid Madrid Spain E-28040 drid, Spain
Citazione:
F.J. Munoz et al., "Seasonal changes in peripheral blood leukocyte functions of the turtle Mauremys caspica and their relationship with corticosterone, 17-beta-estradioland testosterone serum levels", VET IMMUNOL, 77(1-2), 2000, pp. 27-42

Abstract

We have studied the most representative functions of lymphocytes such as adherence to substrate, mobility directed to a chemoattractant gradient (chemotaxis), proliferative response to mitogens and antibody-dependent cellular cytotoxicity (ADCC), as well as natural killer (NK) activity in peripheral blood cells from the turtle Mauremys caspica, and the seasonal changes ofthese functions in both female and male animals. The plasmatic levels of steroid hormones were determined to study their relationship with the immunefunctions. Our results show high chemotaxis, lymphoproliferative response and ADCC as well as NK activity in winter when the levels of corticosterone, testosterone and 17-beta -estradiol were depleted. Proliferative responses to phytohaemagglutinin (PHA), concanavalin A (Con A) and pokeweed mitogen(PWM) were increased in spring correlating with low levels of corticosterone and testosterone in middle and late spring. In summer, the proliferativeresponse was decreased but adherence, chemotaxis, ADCC and NK activity were increased, although steroid hormones showed high plasmatic levels. In autumn, a depletion of both the hormone levels and the immune response were found except for adherence to substrate. The immune functions studied were strikingly influenced by the seasonal cycle, which induced a different pattern of response depending on the function analyzed. Moreover, these immune cells showed a different degree of dependence on steroids in relation to the function and the season considered, suggesting the existence of other factors that modulate the immune response studied. (C) 2000 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/07/20 alle ore 08:54:32