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Effect of heat challenge on peripheral blood mononuclear cell viability: comparison of a tropical and temperate pig breed

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Bambou, Jean-Christophe Gourdine, Jean-Luc Grondin, Roxanne Vachiery, Nathalie Renaudeau, David
Spatial Coverage	Guadeloupe
Description	Country affiliation: France Author Affiliation: Bambou JC ( INRA UR143, Unité de Recherches Zootechniques, Centre INRA Antilles Guyane, Domaine de Duclos, Prise d'Eau, 97170 Petit Bourg, Guadeloupe, French West Indies, France. jean-christophe.bambou@antilles.inra.fr)
Abstract	We evaluated the effect of heat challenge on cell viability, concanavalin A-induced proliferation and heat shock protein (HSPs) mRNA expression in peripheral mononuclear blood cells (PBMC) isolated from Creole (CR) and Large White (LW) pigs. The PBMCs were cultured for 9 h at 37°C before being subjected to heat challenge: (1) at 42°C or 45°C for 2, 4, 6 and 9 h to monitor cell viability;(2) at 45°C for 2 and 9 h followed by stimulation for 24 h at 37°C with concanavalin A to evaluate mitogen-induced proliferation; and (3) at 45°C for 3, 6 and 9 h to measure induction of HSP70.2 and HSP90 mRNA. Cell viability was affected by breed and temperature (P < 0.01), and the viability decrease caused by heat challenge was greater for LW than CR pigs. For mitogen-stimulated PBMCs, incubation at 45°C reduced lymphoblastogenesis equally in both breeds (P < 0.01). Although heat challenge for 3 and 6 h at 45°C induced expression of HSP70.2 and HSP90 mRNA, no breed difference was observed. In conclusion, differences in heat resistance between these two breeds at the whole organism level are reflected at the cellular level. Neither HSP70.2 nor HSP90 mRNA expression levels explain this effect.
File Format	HTM / HTML
ISSN	00494747
Issue Number	8
Volume Number	43
e-ISSN	15737438
Journal	Tropical Animal Health and Production
Language	English
Publisher	Springer
Publisher Date	2011-12-01
Publisher Place	United States
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Veterinary Medicine Discipline Tropical Medicine Hsp70 Heat-shock Proteins Biosynthesis Hsp90 Heat-shock Proteins Heat-shock Response Hot Temperature Adverse Effects Leukocytes, Mononuclear Metabolism Sus Scrofa Physiology Animals Cell Survival Concanavalin A Pharmacology Guadeloupe Blood Genetics Cytology Drug Effects Lymphocyte Activation Male Rna, Messenger Real-time Polymerase Chain Reaction Veterinary Reverse Transcriptase Polymerase Chain Reaction Species Specificity Time Factors Tropical Climate Journal Article Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Animal Science and Zoology Food Animals

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