The Mechanism of Calorie Restriction on Glucose Metabolism Indicators in GDM Rats

Ping YU; Wen HE; Liang JIA

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Ping YU, Wen HE, Liang JIA. The Mechanism of Calorie Restriction on Glucose Metabolism Indicators in GDM Rats[J]. Journal of Kunming Medical University.

Citation:

Ping YU, Wen HE, Liang JIA. The Mechanism of Calorie Restriction on Glucose Metabolism Indicators in GDM Rats[J]. Journal of Kunming Medical University.

Ping YU, Wen HE, Liang JIA. The Mechanism of Calorie Restriction on Glucose Metabolism Indicators in GDM Rats[J]. Journal of Kunming Medical University.

Citation:

Ping YU, Wen HE, Liang JIA. The Mechanism of Calorie Restriction on Glucose Metabolism Indicators in GDM Rats[J]. Journal of Kunming Medical University.

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The Mechanism of Calorie Restriction on Glucose Metabolism Indicators in GDM Rats

Ping YU¹,
Wen HE¹,
Liang JIA^{2
,
,}

1.
Department of Obstetrics and Gynecology
2.
Gynecology Department，Northwest Women’s and Children’s Hospital，Xi’an Shaanxi 710000，China

Received Date: 2024-08-26
Available Online: 2025-08-12

Abstract

Abstract

Objective To investigate the effect of calorie restriction on glucose metabolism in pregnant rats with Gestational diabetes mellitus （GDM） and the mechanism of impaired lipid metabolism in their offspring. Methods 45 healthy SD rats were randomly divided into the healthy group, the GDM model group, and the treatment group respectively with 15 in each group, and the rats in the GDM model were subjected to the calorie restriction intervention. The indicators of glucose metabolism and oxidative stress were detected by enzyme-linked immunosorbent assay and the blood lipid levels were detected by the fully automatic biochemical analyzer. Hematoxylin-eosin staining was used to observe the histopathological changes of pancreatic tissue in rats. Meanwhile, 45 offspring mice were collected and divided into the healthy offspring group, the model offspring group and the treatment offspring group respectively, with 15 in each group. The blood lipid levels were detected by an automatic biochemical analyzer. Western blotting was used to detect the protein expression in pancreatic tissue. Results Compared with the healthy group, the model group showed the increases in the Homeostatic Model Assessment of Insulin Resistance （HOMA-IR）, fasting blood glucose, fasting insulin, total cholesterol （TC）, triacylglycerol （TG）, low density lipoprotein cholesterol Elevated LDL-C, nuclear factor erythroid-2 related factor 2 （Nrf2） hemeoxygenase-1 （HO-1） levels, and a decrease in high density lipoprotein cholesterol （HDL-C） level （P < 0.05）; After the calorie intervention, the treatment group showed the decreases in HOMA-IR, fasting blood glucose, fasting insulin, TC, TG, LDL-C, Nrf2 and HO-1 levels, and an increase in HDL-C level （P < 0.05）. Compared with the healthy group, the model group showed the decreases in the Superoxide dismutase （SOD） and Glutathione peroxidase （GSH-Px） levels, and an increase in Malondialdehyde （MDA） level. Compared with the model group, SOD and GSH-Px in the treatment group increased, while MDA decreased （P < 0.05）. Compared with the offspring of the healthy group, the offspring mice in the model group showed the increases in the TC, TG and LDL-C levels in, and a decrease in the HDL-C level （P < 0.05）. Compared with the offspring of the model group, the offspring mice in the treatment group showed the decrease in the TC, TG and LDL-C of levels, and an increase in the HDL-C （P < 0.05）. Conclusion Calorie restriction can improve the levels of glucose metabolism and lipid metabolism in GDM rats and reduce the pathological damage of pancreatic tissue. The mechanism of action may be related to the activation of the Nrf2/HO-1 signaling pathway.
- Calorie restriction,
- GDM rats,
- Glucose metabolism indicators,
- Impaired lipid metabolism in offspring

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References(23)

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