Resistance of cats to the diabetogenic effect of alloxan.
Experimental diabetes mellitus can be induced chemically in many species of animals with streptozotocin or alloxan. However, the cat is known to be resistant to the diabetogenic effect of streptozotocin. The purpose of this study was to find the optimal dose and rate of injection of alloxan to consistently produce hyperglycemia (blood sugar levels greater than 300 mg/dl) in cats. Alloxan was administered to 22 cats at various concentrations (50, 100 and 150 mg/kg) and different rates of injection (0.5, 1.0 and 1.5 ml/min). No hyperglycemic effect was observed at any of the concentrations or different rates of injection. Cats receiving high concentrations and/or high rates of injection of alloxan died due to kidney damage. The results of this study suggest that the cat is resistant to the diabetogenic effect of alloxan, but is susceptible to its toxic side effects.
Hatchell, DL; Reiser, HJ; Bresnahan, JF; Whitworth, UG
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