How does streptozotocin induced diabetes?

Diabetes is induced by streptozotocin (STZ), a glucosamine–nitrosourea compound derived from Streptomyces achromogenes that is used clinically as a chemotherapeutic agent in the treatment of pancreatic β cell carcinoma. STZ damages pancreatic β cells, resulting in hypoinsulinemia and hyperglycemia.

Which type of diabetes will be induced by streptozotocin in experimental rat models?

Both type 1 and type 2 diabetes can be induced by STZ. If STZ in a dose of 50-60 mg/kg, i.p is given to adult rat it induces type 1 diabetes, but when STZ is in a dose of 100 mg/kg, i.p is given to 2 days old rat pups it induces type 2 diabetes.

How do you induce type 2 diabetes in mice?

To induce diabetes, animals of both sexes received daily intraperitoneal (i.p.) injection of STZ for 5 consecutive days at 55 mg/kg BW (a dose that is known to induce diabetes in male mice) or for females, 75 mg/kg BW of STZ.

What is streptozotocin diabetic rat?

Streptozotocin induces one type of diabetes which is similar to diabetes mellitus with non-ketosis hyperglycemia in some animal species. For induction of experimental diabetes in male adult rats weighted 250–300 grams (75–90 days), 60mg/kg of Streptozotocin was injected intravenously.

What is the difference between alloxan and streptozotocin?

Alloxan not only has toxic effects on islets of Langerhans, but also affect other body organs. It usually produces severe diabetes. Streptozotocin is more specific to beta cells rather than alloxan. strptozotocin has high inductive capacity than alloxan and its less toxic to the pancreas compared to alloxan .

What is alloxan induced diabetes?

Alloxan-induced diabetes is a form of insulin-dependent diabetes mellitus that occurs as a result of alloxan administration or injection to animals [78], [79]. It has been successfully induced in a variety of animal species; rabbits, mice, rats, monkeys, cats and dogs [80], [81].

Can a rat be diabetic?

Around 90% of rats develop diabetes between 8 and 16 weeks of age. The diabetic phenotype is quite severe, and the rats require insulin therapy for survival.

Can mice get diabetes?

The endocrine system of mice is similar to that of humans, so mice can develop both type 1 and type 2 diabetes. Autoimmune destruction of the pancreatic beta cells leading to lack of insulin production is the main characteristic of type 1 diabetes.

How does alloxan induce diabetes in rodents?

Diabetes in rodents is induced by injecting alloxan or streptozotocin which induce diabetes while producing ROS leading to demolition of pancreas β-cells [8, 9]. The prime cause of a number of long term complications of diabetes is chronic hyperglycemia.

Does alloxan cause diabetes in humans?

The beta cell toxic action of alloxan is initiated by free radicals formed in this redox reaction. Studies suggests that alloxan does not cause diabetes in humans.

Is alloxan induced diabetes reversible?

Poor diabetogenicity and easy auto-reversal of alloxan-induced hyperglycemia is very common with intraperitoneal doses of 150 mg/kg and below [85], [124]. In the use of alloxan, higher dose between 170 and 200 mg/kg BW have been noted to be more effective.