PMID- 17212600 OWN - NLM STAT- MEDLINE DCOM- 20070306 LR - 20220408 IS - 1399-543X (Print) IS - 1399-543X (Linking) VI - 7 IP - 6 DP - 2006 Dec TI - Comprehensive assessment of postischemic vascular reactivity in Hispanic children and adults with and without diabetes mellitus. PG - 329-35 AB - BACKGROUND: To examine the whole postischemic hyperemic response period in Hispanic children and adults with and without type 2 diabetes mellitus (T2DM) and offer insight into the potential adaptive mechanisms involved in the arterial response to disturbances in vascular homeostasis. METHODS: Ninety-eight adults and 124 children of Hispanics participated in the study. Endothelial function was assessed in the brachial artery using high-resolution ultrasonography (HRU). A continuous scan was taken for 5 min during the hyperemic response, flow velocity (FV) recordings and diameter measurements were obtained, and brachial arterial blood flow (BF) was calculated after the cuff deflation. RESULTS: The increment in FV during the reactive hyperemic period was higher in obese and in diabetic children than in lean healthy children, although the time to reach peak brachial artery diameter (BAD) and the per cent increase in peak diameter were comparable in all three groups. In subjects with impaired glucose tolerance (IGT), the hyperemic peak increase in FV was comparable to those in healthy adults. In diabetic patients, the peak increase in BAD as well as the per cent increment in the diameter were reduced at 50-60 s after the release of the arm cuff. The time to reach the peak increase in diameter also was prolonged in diabetics when compared with healthy adults. CONCLUSION: Our study demonstrates clear differences in the normal vascular response between healthy children and healthy adults and discloses the presence of additional abnormalities in the flow-mediated vasodilation in diabetic and 'prediabetic' subjects. FAU - Wajcberg, Estela AU - Wajcberg E AD - University of Texas Health Science Center and Texas Diabetes Institute, San Antonio, TX 78229-3900, USA. ewajcberg@yahoo.com FAU - Thoppil, Nimmi AU - Thoppil N FAU - Patel, Shreya AU - Patel S FAU - Fernandez, Marianella AU - Fernandez M FAU - Hale, Daniel AU - Hale D FAU - DeFronzo, Ralph AU - DeFronzo R FAU - Cersosimo, Eugenio AU - Cersosimo E LA - eng PT - Journal Article PL - Denmark TA - Pediatr Diabetes JT - Pediatric diabetes JID - 100939345 SB - IM MH - Adult MH - *Blood Flow Velocity MH - Brachial Artery/diagnostic imaging MH - Child MH - Diabetes Mellitus, Type 2/complications/*physiopathology MH - Endothelium, Vascular/*diagnostic imaging MH - Hispanic or Latino MH - Humans MH - Hyperemia/diagnostic imaging/*epidemiology MH - Ischemia/diagnostic imaging/*physiopathology MH - Systole MH - Texas MH - Ultrasonography EDAT- 2007/01/11 09:00 MHDA- 2007/03/07 09:00 CRDT- 2007/01/11 09:00 PHST- 2007/01/11 09:00 [pubmed] PHST- 2007/03/07 09:00 [medline] PHST- 2007/01/11 09:00 [entrez] AID - PDI209 [pii] AID - 10.1111/j.1399-5448.2006.00209.x [doi] PST - ppublish SO - Pediatr Diabetes. 2006 Dec;7(6):329-35. doi: 10.1111/j.1399-5448.2006.00209.x.