There are conflicting reports showing that alloxan or streptozotocin-induced diabetes in rat increases, decreases or does not alter blood pressure. Since hypertension influences organ-specific diabetic complications, this study was designed to examine the effects of streptozotocin-induced diabetes on blood pressure (BP), hemodynamics and heart weight in spontaneously hypertensive (SHR) and normotensive Wistar (NWR) rats. In order to control the influence of weight loss on BP affected by diabetes, we have examined the effect of weight loss without diabetes on BP, hemodynamics and heart weight in SHR. Weight loss parallel to that in diabetic SHR was induced in a group of SHR by food restriction (fasting). Significant (P less than .05) decreases in systolic and direct BP were observed in diabetic SHR. This hypotensive effect was accompanied by a significant (P less than .05) decrease in total peripheral resistance, but no change in cardiac output. These blood pressure and hemodynamic findings in diabetic SHR were complimented by a significant (P less than .05) reduction in left ventricular weight to body weight ratio. On the contrary, fasting SHR with weight loss equivalent to that in diabetic SHR showed no change in BP or total peripheral resistance. Further, fasting SHR revealed a significant (P less than .05) increase in heart weight to body weight ratio. The weight loss of equal magnitude induced by streptozotocin-induced diabetes in NWR did not have any effect on BP or hemodynamics. In addition, like fasting SHR, diabetic NWR showed a significant (P less than .05) increase in left ventricular weight to body weight ratio.(ABSTRACT TRUNCATED AT 250 WORDS)
Objective -To present a case of hypoparathyroidism that was found to be a part of a rare chromosomal syndrome and to emphasize the importance of its early diagnosis. Case reports -We report the case of a neonate with hypoparathyroidism and dysmorphic features. The chromosome analysis detected terminal deletion of chromosome 10p13. The diagnosis was made of HDR (hypoparathyroidism, sensorineural deafness and renal disease) syndrome due to haploinsufficiency of the GATA-3 gene located on 10p. We searched for additional manifestations of 10p deletion and developed an early management plan in order to prevent complications and improve the prognosis. Conclusion -Chromosomal aberration should be suspected in any neonate with dysmorphic features and intrauterine growth retardation, but the presence of hypoparathyroidism may prompt targeted evaluation for particular chromosomal areas, including 10p.
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