Mônica Volino-Souza , Gustavo Vieira de Oliveira , Renata Leitão , Leandro Lara de Carvalho , Thiago da Silveira Alvares
{"title":"单剂量老化大蒜提取物不会改变心血管危险因素老年人的脑氧合和血容量","authors":"Mônica Volino-Souza , Gustavo Vieira de Oliveira , Renata Leitão , Leandro Lara de Carvalho , Thiago da Silveira Alvares","doi":"10.1016/j.phanu.2023.100345","DOIUrl":null,"url":null,"abstract":"<div><h3>Background</h3><p><span>and Aims: Ageing is associated with impaired endothelial function, which can negatively affect cerebral blood flow (CBF). The present study evaluated whether aged garlic extract (AGE) could improve cerebral </span>oxygenation<span><span> and blood volume due to the possible vasoactive effect. Methods and Results: Fourteen older adults were enrolled in a randomized, double-blind, cross-over study. Urinary </span>thiosulfate<span> and plasma nitrite was drawn, and participants ingested 2.4 g of AGE or placebo. A handgrip exercise protocol started 180 min after supplementation to induce brain activation, and cerebral oxygenation and blood volume were evaluated by near-infrared spectroscopy. After exercise, urinary thiosulfate and plasma nitrite were re-evaluated. AGE supplementation did not change cerebral oxygenation and blood volume. In addition, urinary thiosulfate and plasma nitrite remained unchanged after supplementation. Conclusion: A single dose of AGE (2.4 g) could not increase nitrite levels and cerebral oxygenation and blood volume in older adults at cardiovascular risk factors (NCT04008693).</span></span></p></div>","PeriodicalId":20049,"journal":{"name":"PharmaNutrition","volume":null,"pages":null},"PeriodicalIF":2.4000,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A single dose of aged garlic extract did not change cerebral oxygenation and blood volume in older adults at cardiovascular risk factors\",\"authors\":\"Mônica Volino-Souza , Gustavo Vieira de Oliveira , Renata Leitão , Leandro Lara de Carvalho , Thiago da Silveira Alvares\",\"doi\":\"10.1016/j.phanu.2023.100345\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><h3>Background</h3><p><span>and Aims: Ageing is associated with impaired endothelial function, which can negatively affect cerebral blood flow (CBF). The present study evaluated whether aged garlic extract (AGE) could improve cerebral </span>oxygenation<span><span> and blood volume due to the possible vasoactive effect. Methods and Results: Fourteen older adults were enrolled in a randomized, double-blind, cross-over study. Urinary </span>thiosulfate<span> and plasma nitrite was drawn, and participants ingested 2.4 g of AGE or placebo. A handgrip exercise protocol started 180 min after supplementation to induce brain activation, and cerebral oxygenation and blood volume were evaluated by near-infrared spectroscopy. After exercise, urinary thiosulfate and plasma nitrite were re-evaluated. AGE supplementation did not change cerebral oxygenation and blood volume. In addition, urinary thiosulfate and plasma nitrite remained unchanged after supplementation. Conclusion: A single dose of AGE (2.4 g) could not increase nitrite levels and cerebral oxygenation and blood volume in older adults at cardiovascular risk factors (NCT04008693).</span></span></p></div>\",\"PeriodicalId\":20049,\"journal\":{\"name\":\"PharmaNutrition\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.4000,\"publicationDate\":\"2023-09-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"PharmaNutrition\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2213434423000178\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"NUTRITION & DIETETICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"PharmaNutrition","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2213434423000178","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"NUTRITION & DIETETICS","Score":null,"Total":0}
A single dose of aged garlic extract did not change cerebral oxygenation and blood volume in older adults at cardiovascular risk factors
Background
and Aims: Ageing is associated with impaired endothelial function, which can negatively affect cerebral blood flow (CBF). The present study evaluated whether aged garlic extract (AGE) could improve cerebral oxygenation and blood volume due to the possible vasoactive effect. Methods and Results: Fourteen older adults were enrolled in a randomized, double-blind, cross-over study. Urinary thiosulfate and plasma nitrite was drawn, and participants ingested 2.4 g of AGE or placebo. A handgrip exercise protocol started 180 min after supplementation to induce brain activation, and cerebral oxygenation and blood volume were evaluated by near-infrared spectroscopy. After exercise, urinary thiosulfate and plasma nitrite were re-evaluated. AGE supplementation did not change cerebral oxygenation and blood volume. In addition, urinary thiosulfate and plasma nitrite remained unchanged after supplementation. Conclusion: A single dose of AGE (2.4 g) could not increase nitrite levels and cerebral oxygenation and blood volume in older adults at cardiovascular risk factors (NCT04008693).
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