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Alteration in bile acids profile in Large White pigs during chronic heat exposure.
Fang, Wei; Wen, Xiaobin; Meng, Qingshi; Wu, Weida; Everaert, Nadia; Xie, Jingjing; Zhang, Hongfu.
Afiliación
  • Fang W; State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, China; Precision Livestock and Nutrition Unit, Gembloux Agro-Bio Tech, TERRA Teaching and Research Unit, Liège University, Passage des Déportés 2, Gembloux, Belgium.
  • Wen X; State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, China.
  • Meng Q; State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, China.
  • Wu W; State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, China.
  • Everaert N; Precision Livestock and Nutrition Unit, Gembloux Agro-Bio Tech, TERRA Teaching and Research Unit, Liège University, Passage des Déportés 2, Gembloux, Belgium.
  • Xie J; State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, China. Electronic address: xiejingjing@caas.cn.
  • Zhang H; State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, China. Electronic address: zhanghongfu@caas.cn.
J Therm Biol ; 84: 375-383, 2019 Aug.
Article en En | MEDLINE | ID: mdl-31466777
ABSTRACT
Bile acids (BAs) are critical for cholesterol homeostasis and new roles in metabolism and endocrinology have been demonstrated recently. It remains unknown whether BA metabolism can be affected by heat stress (HS). The objective of this study was to describe the shifts in serum, hepatic and intestinal BA profiles induced by chronic HS. Twenty-seven Large White pigs weighing 40.8 ±â€¯2.7 kg were assigned to one of the three treatments a control group (CON, 23 °C), a HS group (33 °C), or a pair-fed group (PF, 23 °C and fed the same amount as HS group) for 21 d. The concentrations of taurine-conjugated BAs (TUDCA and THDCA in serum and TCDCA, TUDCA, THDCA and THCA in liver) were decreased in HS and PF pigs. However, in HS pigs, a reduction in taurine-conjugated BAs (TCBA) correlated with decreased liver genes expression of BA synthesis, conjugation and uptake transport. BA regulated-genes (FXR, TGR5 and FGFR4) in HS pigs and TGR5, FGFR4 and KLß in PF pigs were down-regulated in liver. In ileum, total BAs and glycoursodeoxycholic acid concentrations were higher in HS pigs than other groups and PF group, respectively (P < 0.05). TCBA (P = 0.01) and tauroursodeoxycholic acid (P < 0.01) were decreased in PF group. BA transporters (OSTα and MRP3) were up-regulated in HS pigs compared with CON and PF pigs, respectively (P < 0.01). In cecum, ursodeoxycholic acid was higher in HS (P = 0.02) group than CON group. The expression of apical sodium-coupled bile acid transporter (P = 0.04) was lower in HS pigs than CON pigs, while OSTß (P < 0.01) was greater in HS group than PF group. These results suggest that chronic HS suppressed liver activity of synthesis and uptake of TCBA, at least in part, which was independent of reduced feed intake.
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Texto completo: 1 Banco de datos: MEDLINE Asunto principal: Porcinos / Enfermedades de los Porcinos / Ácidos y Sales Biliares / Trastornos de Estrés por Calor Límite: Animals Idioma: En Revista: J Therm Biol Año: 2019 Tipo del documento: Article País de afiliación: Bélgica

Texto completo: 1 Banco de datos: MEDLINE Asunto principal: Porcinos / Enfermedades de los Porcinos / Ácidos y Sales Biliares / Trastornos de Estrés por Calor Límite: Animals Idioma: En Revista: J Therm Biol Año: 2019 Tipo del documento: Article País de afiliación: Bélgica