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Psiadia punctulata major flavonoids alleviate exaggerated vasoconstriction produced by advanced glycation end products

Exaggerated vasoconstriction plays important roles in vascular complication in aging and many diseases like diabetes. Here, we investigated the protective effect of Psiadia punctulata (PP) on advanced glycation end products (AGEs)-induced aggravated vasoconstriction. The effect of total methanol ext...

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Autores principales: Abdallah, Hossam M., Zakaria, Esraa M., El-Halawany, Ali M., Mohamed, Gamal A., Safo, Martin K., El-Bassossy, Hany M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6730914/
https://www.ncbi.nlm.nih.gov/pubmed/31491007
http://dx.doi.org/10.1371/journal.pone.0222101
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author Abdallah, Hossam M.
Zakaria, Esraa M.
El-Halawany, Ali M.
Mohamed, Gamal A.
Safo, Martin K.
El-Bassossy, Hany M.
author_facet Abdallah, Hossam M.
Zakaria, Esraa M.
El-Halawany, Ali M.
Mohamed, Gamal A.
Safo, Martin K.
El-Bassossy, Hany M.
author_sort Abdallah, Hossam M.
collection PubMed
description Exaggerated vasoconstriction plays important roles in vascular complication in aging and many diseases like diabetes. Here, we investigated the protective effect of Psiadia punctulata (PP) on advanced glycation end products (AGEs)-induced aggravated vasoconstriction. The effect of total methanol extract of PP leaves (PPT) on AGE-induced vascular injury was studied through bioassay-guided fractionation procedures in order to find the bioactive fraction and isolate the bioactive compounds. Vascular reactivity was studied using the isolated artery technique by adding cumulative concentrations of phenylephrine (PE) or acetyl choline (ACh). In addition, the antiglycating effect, as well as the effect on AGEs intermediates dityrosine and N`-formylkynurenine and their radical scavenging activity were measured. The results showed that PPT alleviated the AGEs-induced aggravated vasoconstriction in a concentration-dependent manner. The bioassay guided fractionation procedures suggested the chloroform fraction (Fr I) to be responsible for the activity. Chemical investigation of this fraction resulted in isolation of four major bioactive compounds that were identified as: umuhengerin (1), gardenin (2), luteolin-3`,4`-dimethyl ether (3), and 5,3`-dihydroxy-6,7,4`,5`-tetramethoxyflavone (4). The four compounds alleviated the exaggerated vasoconstriction in a dose dependent manner. In search for their mechanism of action, we observed that PPT, Fr. I and the isolated compounds did not improve the impaired vasodilation associated with AGEs exposure. PPT, Fr. I and the isolated compounds 1–4 inhibited AGEs formation and their protein oxidation intermediates. Furthermore, PPT, Fr. I and the isolated compounds 1–4 showed weak radical scavenging activity with compound 4 as the most potent. In conclusion, PPT appears to protect against AGEs-induced exaggerated vasoconstriction through antiglycation and radical scavenging activities.
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spelling pubmed-67309142019-09-16 Psiadia punctulata major flavonoids alleviate exaggerated vasoconstriction produced by advanced glycation end products Abdallah, Hossam M. Zakaria, Esraa M. El-Halawany, Ali M. Mohamed, Gamal A. Safo, Martin K. El-Bassossy, Hany M. PLoS One Research Article Exaggerated vasoconstriction plays important roles in vascular complication in aging and many diseases like diabetes. Here, we investigated the protective effect of Psiadia punctulata (PP) on advanced glycation end products (AGEs)-induced aggravated vasoconstriction. The effect of total methanol extract of PP leaves (PPT) on AGE-induced vascular injury was studied through bioassay-guided fractionation procedures in order to find the bioactive fraction and isolate the bioactive compounds. Vascular reactivity was studied using the isolated artery technique by adding cumulative concentrations of phenylephrine (PE) or acetyl choline (ACh). In addition, the antiglycating effect, as well as the effect on AGEs intermediates dityrosine and N`-formylkynurenine and their radical scavenging activity were measured. The results showed that PPT alleviated the AGEs-induced aggravated vasoconstriction in a concentration-dependent manner. The bioassay guided fractionation procedures suggested the chloroform fraction (Fr I) to be responsible for the activity. Chemical investigation of this fraction resulted in isolation of four major bioactive compounds that were identified as: umuhengerin (1), gardenin (2), luteolin-3`,4`-dimethyl ether (3), and 5,3`-dihydroxy-6,7,4`,5`-tetramethoxyflavone (4). The four compounds alleviated the exaggerated vasoconstriction in a dose dependent manner. In search for their mechanism of action, we observed that PPT, Fr. I and the isolated compounds did not improve the impaired vasodilation associated with AGEs exposure. PPT, Fr. I and the isolated compounds 1–4 inhibited AGEs formation and their protein oxidation intermediates. Furthermore, PPT, Fr. I and the isolated compounds 1–4 showed weak radical scavenging activity with compound 4 as the most potent. In conclusion, PPT appears to protect against AGEs-induced exaggerated vasoconstriction through antiglycation and radical scavenging activities. Public Library of Science 2019-09-06 /pmc/articles/PMC6730914/ /pubmed/31491007 http://dx.doi.org/10.1371/journal.pone.0222101 Text en © 2019 Abdallah et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Abdallah, Hossam M.
Zakaria, Esraa M.
El-Halawany, Ali M.
Mohamed, Gamal A.
Safo, Martin K.
El-Bassossy, Hany M.
Psiadia punctulata major flavonoids alleviate exaggerated vasoconstriction produced by advanced glycation end products
title Psiadia punctulata major flavonoids alleviate exaggerated vasoconstriction produced by advanced glycation end products
title_full Psiadia punctulata major flavonoids alleviate exaggerated vasoconstriction produced by advanced glycation end products
title_fullStr Psiadia punctulata major flavonoids alleviate exaggerated vasoconstriction produced by advanced glycation end products
title_full_unstemmed Psiadia punctulata major flavonoids alleviate exaggerated vasoconstriction produced by advanced glycation end products
title_short Psiadia punctulata major flavonoids alleviate exaggerated vasoconstriction produced by advanced glycation end products
title_sort psiadia punctulata major flavonoids alleviate exaggerated vasoconstriction produced by advanced glycation end products
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6730914/
https://www.ncbi.nlm.nih.gov/pubmed/31491007
http://dx.doi.org/10.1371/journal.pone.0222101
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