Caloric and time restriction diets improve acute kidney injury in experimental menopausal rats: role of silent information regulator 2 homolog 1 and transforming growth factor beta 1

• Published in: Molecular biology reports 2024-12, Vol.51 (1), p.812, Article 812
• Main Authors: Darvishzadeh Mahani, Fatemeh, Raji-Amirhasani, Alireza, Khaksari, Mohammad, Mousavi, Maryam Sadat, Bashiri, Hamideh, Hajializadeh, Zahra, Alavi, Samaneh Sadat
• Format: Article
• Language: English
• Subjects: Acute Kidney Injury - metabolism; Albumin; Animal Anatomy; Animal Biochemistry; Animals; Biomedical and Life Sciences; Body Weight; Caloric Restriction - methods; Cholesterol; Creatinine; Creatinine - blood; Diet; Disease Models, Animal; Estrogens; Female; Growth factors; High density lipoprotein; Histology; Kidney - metabolism; Kidney - pathology; Kidneys; Life Sciences; Low density lipoprotein; Menopause - metabolism; Morphology; Nutrient deficiency; Original Article; Ovariectomy; Ovaries; Rats; SIRT1 protein; Sirtuin 1 - metabolism; Transforming Growth Factor beta1 - genetics; Transforming Growth Factor beta1 - metabolism; Transforming growth factor-b; Transforming growth factor-b1
• ISSN: 0301-4851; 1573-4978; 1573-4978
• DOI: 10.1007/s11033-024-09716-x

Background Estrogen has a protective impact on acute kidney injury (AKI); moreover, reducing the daily intake of calories impedes developing diseases. The present study aimed to determine the effects of calorie restriction (CR) and time restriction (TR) diets on the expression of silent information regulator 2 homolog 1 (SIRT1), transforming growth factor beta 1 (TGF-β1), and other indicators in the presence and absence of ovaries in AKI female rats. Methods The female rats were divided into two groups, ovariectomized (OVX) and sham, and were placed on CR and TR diets for eight weeks; afterward, AKI was induced by injecting glycerol, and kidney injury indicators and biochemical parameters were measured before and after AKI. Results After AKI, the levels of urine albumin excretion rate, urea, and creatinine in serum, and TGF-β1 increased, while creatinine clearance and SIRT1 decreased in kidney tissue. CR improved kidney indicators and caused a reduction in TGF-β1 and an increase in SIRT1 in ovary-intact rats. Moreover, CR prevented total antioxidant capacity (TAC) decrease and malondialdehyde (MDA) increase resulting from AKI. Before AKI, an increase in body weight, fasting blood sugar (FBS), low-density lipoprotein (LDL), triglyceride (TG), and total cholesterol (TC), and a decrease in high-density lipoprotein (HDL) were observed in OVX rats compared to sham rats, but CR prevented these changes. The effects of TR were similar to those of CR in all indicators except for TGF-β1, SIRT1, urea, creatinine, and albumin. Conclusion The present study indicated that CR is more effective than TR in preventing AKI, probably by increasing SIRT1 and decreasing TGF-β1 in ovary-intact animals.