Survival strategies of Wuchang bream (Megalobrama amblycephala) juveniles for chronic ammonia exposure: Antioxidant defense and the synthesis of urea and glutamine

2020 ◽  
Vol 230 ◽  
pp. 108707
Author(s):  
Honghui Guo ◽  
Wang Lin ◽  
Xueyang Wu ◽  
Lingkai Wang ◽  
Dandan Zhang ◽  
...  
Keyword(s):  
Antioxidant Defense ◽  
Survival Strategies ◽  
Megalobrama Amblycephala ◽  
Wuchang Bream ◽  
Ammonia Exposure

scholarly journals Metformin improves the glucose homeostasis of Wuchang bream fed high-carbohydrate diets: a dynamic study

2019 ◽  
Vol 8 (3) ◽  
pp. 182-194 ◽  
Author(s):  
Chao Xu ◽  
Xiang-Fei Li ◽  
Hong-Yan Tian ◽  
Hua-Juan Shi ◽  
Ding-Dong Zhang ◽  
...  
Keyword(s):  
Glucose Homeostasis ◽  
Sampling Period ◽  
Liver Glycogen ◽  
Tolerance Test ◽  
Plasma Metabolites ◽  
Megalobrama Amblycephala ◽  
Control Group ◽  
Acid Oxidation ◽  
High Carbohydrate ◽  
Wuchang Bream

After a 12-week feeding trial, the glucose tolerance test was performed in Megalobrama amblycephala to evaluate the effects of metformin on the metabolic responses of glycolipids. Plasma insulin peaked at 2 h, then decreased to the basal value at 8–12 h post-injection. Plasma triglyceride levels and liver glycogen contents of the control group was decreased significantly during the first 2 and 1 h, respectively. Then, they returned to basal values at 12 h. During the whole sampling period, the high-carbohydrate groups had significantly higher levels of plasma metabolites and liver glycogen than those of the control group, and metformin supplementation enhanced these changes (except insulin levels). Glucose administration lowered the transcriptions of ampk α1, ampk α2, pepck, g6pase, fbpase, cpt IA and aco, the phosphorylation of Ampk α and the activities of the gluconeogenic enzymes during the first 2–4 h, while the opposite was true of glut 2, gs, gk, pk, accα and fas. High-carbohydrate diets significantly increased the transcriptions of ampk α1, ampk α2, glut 2, gs, gk, pk, accα and fas, the phosphorylation of Ampk α and the activities of the glycolytic enzymes during the whole sampling period, while the opposite was true for the remaining indicators. Furthermore, metformin significantly upregulated the aforementioned indicators (except accα and fas) and the transcriptions of cpt IA and aco. Overall, metformin benefits the glucose homeostasis of Megalobrama amblycephala fed high-carbohydrate diets through the activation of Ampk and the stimulation of glycolysis, glycogenesis and fatty acid oxidation, while depressing gluconeogenesis and lipogenesis.

Dietary vitamin D3 requirement of Wuchang bream (Megalobrama amblycephala)

Aquaculture ◽  
2015 ◽  
Vol 436 ◽  
pp. 104-109 ◽  
Author(s):  
Miao Ling-hong ◽  
Ge Xian-ping ◽  
Xie Jun ◽  
Liu Bo ◽  
Wang Ke-bao ◽  
...  
Keyword(s):  
Vitamin D3 ◽  
Dietary Vitamin ◽  
Megalobrama Amblycephala ◽  
Wuchang Bream

Dietary vitamin A requirement of juvenile Wuchang bream ( Megalobrama amblycephala ) determined by growth and disease resistance

Aquaculture ◽  
2016 ◽  
Vol 450 ◽  
pp. 23-30 ◽  
Author(s):  
Bo Liu ◽  
Zhenxing Zhao ◽  
Paul B. Brown ◽  
Honghong Cui ◽  
Jun Xie ◽  
...  
Keyword(s):  
Disease Resistance ◽  
Vitamin A ◽  
Dietary Vitamin ◽  
Megalobrama Amblycephala ◽  
Wuchang Bream
Sign in / Sign up

Export Citation Format

Share Document