title: Decreased IgA+ B cells population and IgA, IgG, IgM contents of the cecal tonsil induced by dietary high fluorine in broilers.
abstract: Fluoride is an environmental and industrial pollutant that affects various organs in humans and animals. The cecal tonsil is an important component of the mucosal immune system and performs important and unique immune functions. In the present study, we investigated the effects of dietary high fluorine on the quantities of IgA+ B cells in the cecal tonsil by immunohistochemistry, and the immunoglobulin A (IgA), immunoglobulin G (IgG) and immunoglobulin M (IgM) contents in the cecal tonsil by ELISA. A total of 280 one-day-old avian broilers were divided into four groups and fed on a corn-soybean basal diet as control diet (fluorine 22.6 mg/kg) or the same diet supplemented with 400, 800 and 1,200 mg/kg fluorine (high fluorine groups I, II and III) in the form of sodium fluoride, respectively, throughout a 42-day experimental period. The results showed that the quantities of IgA+ B cells were lower (p < 0.05 or p < 0.01) and the IgA, IgG, and IgM contents were decreased (p < 0.05 or p < 0.01) in high fluorine groups II and III in comparison with those of control group. It was concluded that dietary fluorine, in the 800-1,200 mg/kg range, could reduce the numbers of the IgA+ B cells and immunoglobulin contents in the cecal tonsil, implying the local mucosal immune function was ultimately impacted in broilers.
authors: Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Ya'an 625014, China. liujuan9640@163.com
authors: Juan
authors: J
authors: Liu
authors: Hengmin
authors: H
authors: Cui
authors: Xi
authors: X
authors: Peng
authors: Jing
authors: J
authors: Fang
authors: Zhicai
authors: Z
authors: Zuo
authors: Junliang
authors: J
authors: Deng
authors: Hesong
authors: H
authors: Wang
authors: Bangyuan
authors: B
authors: Wu
authors: Yuanxin
authors: Y
authors: Deng
authors: Kangping
authors: K
authors: Wang
mesh_terms: D000821:Animal Feed / Q000032:analysis; D000818:Animals; D030161:Avian Proteins / Q000378:metabolism; D001402:B-Lymphocytes / Q000187:drug effects; D002432:Cecum / Q000187:drug effects* / Q000276:immunology; D002645:Chickens / Q000276:immunology*; D004032:Diet; D019587:Dietary Supplements / Q000633:toxicity*; D004305:Dose-Response Relationship, Drug; D004797:Enzyme-Linked Immunosorbent Assay / Q000662:veterinary; D018928:Immunity, Mucosal; D007070:Immunoglobulin A / Q000378:metabolism; D007074:Immunoglobulin G / Q000378:metabolism; D007075:Immunoglobulin M / Q000378:metabolism; D007150:Immunohistochemistry / Q000662:veterinary; D012969:Sodium Fluoride / Q000008:administration & dosage / Q000494:pharmacology*
chemical_list: D030161:Avian Proteins; D007070:Immunoglobulin A; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D012969:Sodium Fluoride
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