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  • Title: Low-dose streptozotocin-induced diabetes in the spontaneously hypertensive rat.
    Author: Reaven GM, Ho H.
    Journal: Metabolism; 1991 Apr; 40(4):335-7. PubMed ID: 2011074.
    Abstract:
    Streptozotocin (STZ, 35 mg/kg body weight) was injected into spontaneously hypertensive rats (SHR) and Wistar-Kyoto (WKY) rats, and plasma glucose and triglyceride concentrations measured 10 days later. Neither mean (+/- SEM) plasma glucose (130 +/- 3 v 136 +/- 3 mg/dL) nor triglyceride (93 +/- 6 v 108 +/- 7 mg/dL) concentrations increased in WKY rats. In contrast, both plasma glucose (141 +/- 3 v 262 +/- 36) and triglyceride (121 +/- 8 v 196 +/- 7 mg/dL) concentrations increased significantly (P less than .01) following administration of STZ in SHR. Furthermore, when SHR previously injected with STZ were fed a diet enriched in fructose, they had a further increase (P less than .01) in both plasma glucose (343 +/- 38 mg/dL) and triglyceride (774 +/- 57 mg/dL) concentrations. Plasma triglyceride concentration also increased significantly (P less than .05) when STZ-injected WKY rats ingested the fructose-enriched diet, but plasma glucose levels still remained within the normal range (152 +/- 5 mg/dL). These results indicate that SHR were more sensitive to the effects of a decrease in pancreatic beta-cell function (STZ) and an increase in insulin resistance (fructose feeding) than WKY rats.
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