title: Effect of selenium supplementation on aflatoxin B₁-induced histopathological lesions and apoptosis in bursa of Fabricius in broilers.
abstract: To investigate the effects of sodium selenite against aflatoxin B1 (AFB 1), 200 male Avian broilers, divided into five groups, were fed with basal diet (control group), 0.3 mg/kg AFB1 (AFB1 group), 0.3 mg/kg AFB1 + 0.2 mg/kg Se (+Se group I), 0.3 mg/kg AFB1 + 0.4 mg/kg Se (+Se group II) and 0.3 mg/kg AFB1 + 0.6 mg/kg Se (+Se group III), respectively. Compared with the control group, decreased relative weight of bursa of Fabricius and contents of serum immunoglobulin, more vacuoles and debris in the bursal lymphoid follicle, and increased percentage of apoptotic bursal cells were observed in the AFB1 group. Sodium selenite, however, could increase the relative weight of bursa of Fabricius and contents of serum immunoglobulin, and ameliorate histopathological lesions. The percentages of apoptotic bursal cells, through flow cytometry and terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling method, in the three +Se groups were lower than those in the AFB 1 group. Compared with the AFB 1 group, moreover, the mRNA expressions of Bax and Caspase-3 by qRT-PCR in the three +Se groups were decreased, while the expression of Bcl-2 was increased. The results indicate that sodium selenite in diet can protect chicken from AFB 1-induced impairment of humoral immune function by reducing bursal histopathological lesions and percentages of apoptotic bursal cells.
authors.affiliation: Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Ya'an, Sichuan 625014, China.
authors.forename: Kejie
authors.initials: K
authors.lastname: Chen
authors.affiliation: Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Ya'an, Sichuan 625014, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Fang
authors.affiliation: Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Ya'an, Sichuan 625014, China. Electronic address: pengxi197313@163.com.
authors.forename: Xi
authors.initials: X
authors.lastname: Peng
authors.affiliation: Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Ya'an, Sichuan 625014, China. Electronic address: cui580420@sicau.edu.cn.
authors.forename: Hengmin
authors.initials: H
authors.lastname: Cui
authors.affiliation: Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Ya'an, Sichuan 625014, China.
authors.forename: Jin
authors.initials: J
authors.lastname: Chen
authors.affiliation: Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Ya'an, Sichuan 625014, China.
authors.forename: Fengyuan
authors.initials: F
authors.lastname: Wang
authors.affiliation: Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Ya'an, Sichuan 625014, China.
authors.forename: Zhengli
authors.initials: Z
authors.lastname: Chen
authors.affiliation: Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Ya'an, Sichuan 625014, China.
authors.forename: Zhicai
authors.initials: Z
authors.lastname: Zuo
authors.affiliation: Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Ya'an, Sichuan 625014, China.
authors.forename: Junliang
authors.initials: J
authors.lastname: Deng
authors.affiliation: Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Ya'an, Sichuan 625014, China.
authors.forename: Weimin
authors.initials: W
authors.lastname: Lai
authors.affiliation: College of Life and Basic Sciences, Sichuan Agricultural University, Ya'an, Sichuan 625014, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Zhou
mesh_terms: D016604:Aflatoxin B1 / Q000037:antagonists & inhibitors / Q000633:toxicity*; D000818:Animals; D017209:Apoptosis / Q000187:drug effects*; D002060:Bursa of Fabricius / Q000187:drug effects* / Q000473:pathology; D002645:Chickens; D019587:Dietary Supplements; D005434:Flow Cytometry; D007070:Immunoglobulin A / Q000097:blood; D007074:Immunoglobulin G / Q000097:blood; D007075:Immunoglobulin M / Q000097:blood; D020287:In Situ Nick-End Labeling; D008297:Male; D060888:Real-Time Polymerase Chain Reaction; D018038:Sodium Selenite / Q000494:pharmacology*
chemical_list: D007070:Immunoglobulin A; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D016604:Aflatoxin B1; D018038:Sodium Selenite
keywords: Aflatoxin B 1; Apoptosis; Broiler; Bursa of Fabricius; Immunoglobulin; Sodium selenite