Aging Parameters of the Accelerated Aging Procedure through D-Galactose Induction

Area of Science:

• Gerontology
• Biomedical Research
• Animal Models

Background:

• D-galactose (D-gal) administration is a known method to accelerate aging and create aging models.
• Both low-dose long-term and high-dose short-term D-gal injections can induce aging across various organs and functions.
• Previous studies have utilized D-gal to model aging in mice, affecting brain, cardiac, liver, renal, and skin health, as well as causing erectile dysfunction.

Purpose of the Study:

• To investigate the efficacy of a high-dose, short-term intraperitoneal (i.p.) D-galactose injection in inducing natural aging in a rat model.
• To assess the impact of this D-galactose-induced aging model on specific physiological and biochemical parameters.
• To determine the suitability of body weight (BW), Superoxide Dismutase (SOD), Vascular Endothelial Growth Factor (VEGF), C-reactive protein (CRP), and myostatin as aging indicators.

Main Methods:

• Rats received a daily high dose of D-galactose (300 mg/ml/kg) via i.p. injection for seven consecutive days.
• Following the seven-day intervention, body weight and gastrocnemius muscle circumference were measured.
• Blood plasma was collected for biochemical analysis of SOD, VEGF, CRP, and myostatin levels.

Main Results:

• No significant differences were observed in body weight or gastrocnemius circumference between the D-galactose-treated group and the control group (0.9% NaCl i.p.).
• D-galactose administration led to a significant increase in blood plasma levels of SOD, VEGF, CRP, and myostatin.
• Nonparametric statistical tests (Friedman and Mann-Whitney) were employed for data analysis.

Conclusions:

• A high-dose, short-term intraperitoneal administration of D-galactose is an effective method for inducing aging in rat models.
• Elevated levels of SOD, VEGF, CRP, and myostatin serve as reliable biochemical markers for D-galactose-induced aging in rats.