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Effects of streptozotocin (STZ)-induced diabetes and insulin replacement on rat ventral prostate
E Suthagar1, S Soudamani, S Yuvaraj
1Department of Endocrinology, Dr. ALM Post Graduate Institute of Basic Medical Sciences, University of Madras, Taramani, Chennai, India.
Background:
Diabetes mellitus due to insulin deficiency has adverse effect on all organ systems including reproductive organs. Streptozotocin (STZ)-induced diabetes in rats provides a relevant model to study reproductive dysfunction under diabetic conditions, as they exhibit a number of deficits in reproductive function that resemble those seen in humans. The present investigation was designed to delineate the impact of STZ-induced diabetes and insulin replacement on the rat ventral prostate.
Methods:
Healthy adult male rats of Wistar strain were divided into three groups: Group I: Control; Group II: STZ-diabetic (rats were treated with a single intraperitoneal injection of streptozotocin (STZ) at a dose of 65 mg/kg body weight); Group III: Insulin replaced (after 3 days of STZ treatment, a group of adult male diabetic rats was given insulin at a dose of 3U/100g body weight in two equally divided doses at 08:00 and 18:00 h). All the rats were killed after 20 days of treatment and ventral prostate was removed and processed for biochemical estimations such as glucose oxidation, nuclear and cytosolic androgen and estrogen receptors, fructose, acid and alkaline phosphatases.
Results:
STZ-diabetes significantly decreased the body weight. Glucose oxidation, androgen and estrogen receptor concentration were also decreased in ventral prostate, but the fructose concentration was increased. Specific activities of both acid and alkaline phosphatases were also markedly decreased due to diabetes.
Conclusion:
The results of this study suggest adverse effects of STZ-induced diabetes on the biochemical profiles as well as androgen and estrogen receptors of rat ventral prostate. Amelioration of these changes (partially or completely) by insulin replacement indicates that optimal insulin is essential for maintaining functional integrity of ventral prostate.
Insights
Diabetes significantly impacts rat ventral prostate function, reducing glucose oxidation and hormone receptors. Insulin replacement partially restored these biochemical profiles, highlighting insulin's importance for prostate health.
Area of Science:
- Endocrinology
- Reproductive Biology
- Metabolic Disorders
Background:
- Insulin deficiency in diabetes mellitus adversely affects all organ systems, including reproductive organs.
- Streptozotocin (STZ)-induced diabetes in rats models human reproductive dysfunction.
- This study investigates STZ-induced diabetes and insulin replacement effects on the rat ventral prostate.
Purpose of the Study:
- To delineate the impact of STZ-induced diabetes on the rat ventral prostate.
- To assess the effects of insulin replacement therapy on diabetic rat ventral prostate.
- To evaluate biochemical and receptor changes in the ventral prostate under diabetic conditions.
Main Methods:
- Wistar rats were divided into control, STZ-diabetic, and insulin-replaced groups.
- Diabetes was induced via a single intraperitoneal injection of streptozotocin (STZ).
- Insulin therapy was administered to diabetic rats; ventral prostates were analyzed for biochemical markers and receptors after 20 days.
Main Results:
- STZ-diabetes significantly reduced body weight, glucose oxidation, and androgen/estrogen receptor concentrations in the ventral prostate.
- Fructose concentration in the ventral prostate increased in diabetic rats.
- Activities of acid and alkaline phosphatases were markedly decreased in diabetic rat ventral prostates.
Conclusions:
- STZ-induced diabetes adversely affects the biochemical profiles and hormone receptors of the rat ventral prostate.
- Insulin replacement partially or completely ameliorated these diabetic-induced changes.
- Optimal insulin levels are crucial for maintaining the functional integrity of the ventral prostate.
