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Oral glucose load and human cutaneous microcirculation : an insight into flowmotion assessed by wavelet transform [Elektronski vir]Silva, Henrique ; Šorli, Jernej, medicina ; Lenasi, Helena, 1971-Microcirculation in vivo has been assessed using non-invasive technologies such as laser Doppler flowmetry (LDF). In contrast to chronic hyperglycemia, known to induce microvascular dysfunction, the ... effects of short-term elevations in blood glucose on microcirculation are controversial. We aimed to assess the impact of an oral glucose load (OGL) on the cutaneous microcirculation of healthy subjects, quantified by LDF and coupled with wavelet transform (WT) as an interpretation tool. On two separate occasions, sixteen subjects drank either a glucose solution (75 g in 250 mL water) or water (equal volume). LDF signals were obtained in two anatomical sites (forearm and finger pulp) before and after each load (pre-load and post-load, respectively), in resting conditions and during post-occlusive reactive hyperemia (PORH). The WT allowed decomposition of the LDF signals into their spectral components (cardiac, respiratory, myogenic, sympathetic, endothelial NO-dependent). The OGL blunted the PORH response in the forearm, which was not observed with the water load. Significant differences were found for the cardiac and sympathetic components in the glucose and water groups between the pre-load and post-load periods. These results suggest that an OGL induces a short-term subtle microvascular impairment, probably involving a modulation of the sympathetic nervous system.Source: Biology [Elektronski vir]. - ISSN 2079-7737 (Vol. 10, iss. 10, 2021, str. 1-17)Type of material - e-article ; adult, seriousPublish date - 2021Language - englishCOBISS.SI-ID - 83675651
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Silva, Henrique | |
Šorli, Jernej, medicina | |
Lenasi, Helena, 1971- | 18322 |
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