Parameters of Microcirculation in Both Sexes at Different Ages

Baboshina, N. V.

doi:10.1134/s0362119718010048

Cited by 3 publications

(1 citation statement)

References 2 publications

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“…14,20 Only a few papers considered the difference in LDF signals of different age groups under basal conditions. 13,21 Most studies evaluated the level of perfusion in areas with nonglabrous skin, where there was not detected any statistically significant difference in basal blood flow between younger and older participants. These data completely coincide with our microcirculation measurements on the dorsal side of the wrists obtained in this study.…”

Section: Resultsmentioning

confidence: 99%

Pilot studies of age-related changes in blood perfusion in two different types of skin

Loktionova

Zharkikh²,

Kozlov

et al. 2019

Saratov Fall Meeting 2018: Optical and Nano-Technologies for Biology and Medicine

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Laser Doppler flowmetry (LDF) was utilized to assess age-related changes in the blood microcirculation at the skin sites with different morphology and regulation. The LDF signals obtained from the glabrous skin of the middle finger pad and nonglabrous skin on the dorsal wrist surface were analyzed. Statistically higher baseline perfusion was observed in the zone with glabrous skin in the older group of volunteers compared to younger participants. Observed site-specific and age-related differences in perfusion can be used in the future experimental design for the studies of the blood microcirculation system in patients with different pathologies.

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Section: Resultsmentioning

confidence: 99%

Pilot studies of age-related changes in blood perfusion in two different types of skin

Loktionova

Zharkikh²,

Kozlov

et al. 2019

Saratov Fall Meeting 2018: Optical and Nano-Technologies for Biology and Medicine

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Skin Blood Flow Responses to Acetylcholine, Local Heating, and to 60% VO2max exercise with and without Nitric Oxide inhibition, in Boys vs. Girls

Massarotto

Hodges

Woloschuk

et al. 2022

Pediatric Exercise Science

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Purpose: To determine sex-related differences in the skin blood flow (SkBF) response to exercise, local heating, and acetylcholine (ACh) in children, and to assess nitric oxide contribution to the SkBF response. Methods: Forearm SkBF during local heating (44°C), ACh iontophoresis, and exercise (30-min cycling and 60% of maximum oxygen consumption) was assessed, using laser Doppler fluxmetry, in 12 boys and 12 girls (7–13 y old), with and without nitric oxide synthase inhibition, using Nω-nitro-L-arginine methyl ester iontophoresis. Results: Local-heating-induced and ACh-induced SkBF increase were not different between boys and girls (local heating: 1445% [900%] and 1432% [582%] of baseline, P = .57; ACh: 673% [434%] and 558% [405%] of baseline, respectively, P = .18). Exercise-induced increase in SkBF was greater in boys than girls (528% [290%] and 374% [192%] of baseline, respectively, P = .03). Nω-nitro-L-arginine methyl ester blunted the SkBF response to ACh and during exercise (P < .001), with no difference between sexes. Conclusion: SkBF responses to ACh and local heat stimuli were similar in boys and girls, while the increase in SkBF during exercise was greater in boys. The apparent role of nitric oxide was not different between boys and girls. It is suggested that the greater SkBF response in boys during exercise was related to greater relative heat production and dissipation needs at this exercise intensity. The response to body size-related workload should be further examined.

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Correlation and spectral analysis of microcirculatory changes in symmetric areas of human head in short-term hypoxic exposure

Mezentseva

Дудник

Nikenina³

et al. 2022

Regional blood circulation and microcirculation

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Purpose. To study the effect of short-term hypoxic exposure on correlation between microcirculatory parameters (MCR) of symmetric areas of the human head. Materials and methods. MCR parameters of 10 healthy male volunteer were measured by laser Doppler flowmetry method. Short-term hypoxic exposure was produced according to the hypoxic test method using the ReOxy Cardio unit (S. A. Aimediq). We assessed the perfusion metrics left and right areas of interest, neurogenic, myogenic, respiratory and cardiac contributors to vascular tone and correlations between baseline parameters and after hypoxic exposure. Results. We revealed the specificity of regional circulation system rearranging induced by hypoxic load. The specificity is caused by functional asymmetry of correlations between different vascular tone contributors in symmetrical head areas. Strong correlation declining under the hypoxic loads between baseline perfusion on left/right was found. The perfusion changes of symmetrical temporal areas under the hypoxic loads correlate negatively with the baseline perfusion of both the same and the opposite side. Conclusion. Short-term hypoxic load rearranges the balance of different vascular tone contributors regulatory role in MCR of symmetric head areas to maintain the sustainable activity of the whole MRC.

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Parameters of Microcirculation in Both Sexes at Different Ages

Cited by 3 publications

References 2 publications

Pilot studies of age-related changes in blood perfusion in two different types of skin

Pilot studies of age-related changes in blood perfusion in two different types of skin

Skin Blood Flow Responses to Acetylcholine, Local Heating, and to 60% VO2max exercise with and without Nitric Oxide inhibition, in Boys vs. Girls

Correlation and spectral analysis of microcirculatory changes in symmetric areas of human head in short-term hypoxic exposure

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