Dietary magnesium deficiency impaired intestinal structural integrity in grass carp (Ctenopharyngodon idella).

ABSTRACT: Grass carp (223.85-757.33 g) were fed diets supplemented with magnesium (73.54-1054.53 mg/kg) for 60 days to explore the impacts of magnesium deficiency on the growth and intestinal structural integrity of the fish. The results demonstrated that magnesium deficiency suppressed the growth and damaged the intestinal structural integrity of the fish. We first demonstrated that magnesium is partly involved in (1) attenuating antioxidant ability by suppressing Nrf2 signalling to decrease antioxidant enzyme mRNA levels and activities (except CuZnSOD mRNA levels and activities); (2) aggravating apoptosis by activating JNK (not p38MAPK) signalling to upregulate proapoptotic protein (Apaf-1, Bax and FasL) and caspase-2, -3, -7, -8 and -9 gene expression but downregulate antiapoptotic protein (Bcl-2

SUBMITTER: Wei SP 

PROVIDER: S-EPMC6107577 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature