Effect of hepatic sympathetic nerve removal on energy metabolism in an animal model of cognitive impairment and its relationship to Glut2 expression

Abstract

<jats:title>Abstract</jats:title><jats:p>The aims of this study were to investigate the effect of hepatic sympathetic nerve removal on glucose and lipid metabolism in rats with cognitive impairment and to evaluate the relationship between these effects and liver <jats:italic>Glut2</jats:italic> expression. Hippocampal injection of Aβ<jats:sub>1–42</jats:sub> was used to induce cognitive impairment. Impaired rats were divided into experimental, sham, and control groups. The experimental group was injected with 6-hydroxydopamine to remove the sympathetic nerve. At 4 weeks post injection, body weight, food and water intake, blood sugar, and blood lipids were measured, and periodic acid-Schiff (PAS) staining was used to assess the liver glycogen content. Liver <jats:italic>Glut2</jats:italic> mRNA and protein were also detected. The experimental group showed reduced body weight, food intake, and blood glucose levels and elevated insulin levels compared with the control group. PAS staining showed higher glycogen contents in the experimental group than in controls. The expression levels of <jats:italic>Glut2</jats:italic> mRNA and protein in the experimental group were significantly lower than in the controls. Metabolism was significantly impacted in rats with cognitive impairment following removal of the hepatic sympathetic nerve. Disruption to <jats:italic>Glut2</jats:italic> liver expression via sympathetic nerve disruption represents a possible underlying mechanism.</jats:p>

Hypoglycemic Effect of Exopolysaccharide from Lactiplantibacillus plantarum JLAU103 on Streptozotocin and High-Fat Diet-Induced Type 2 Diabetic Mice

“…Liver tissues were fixed in 4% paraformaldehyde, embedded in paraffin, and sectioned (4 µm). Then, the sections were used for PAS staining according to the method described by Wei et al [ 12 ] The images were captured using an Olympus microscope (Olympus, Japan), the positive area stained relative to the plaque area was calculated using Image Pro Plus 6.0 software (Media Cybernetics). Additionally, the content of hepatic glycogen was determined by using the glycogen assay kit follow by the manufacturer’s protocols.…”