Chemical composition by PTP 1B inhibitory activity guided analysis of a plant- based antidiabetic polyherbal drug used in ethnomedical systems

Abstract Background Due to growing resistance and continued depletion of drugs that can be used as replacements, people turn to herbal antidiabetic medicines. A polyherbal drug consisting of a mixture of two herbal plants, Zanthoxylum chalybeum and Xeroderris stuhlmannii root powder mixed in equal a...

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Main Authors: Pardon Mugari, Pamhidzai Dzomba, Stephen Nyoni
Format: Article
Language:English
Published: SpringerOpen 2025-01-01
Series:Bulletin of the National Research Centre
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Online Access:https://doi.org/10.1186/s42269-025-01300-y
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author Pardon Mugari
Pamhidzai Dzomba
Stephen Nyoni
author_facet Pardon Mugari
Pamhidzai Dzomba
Stephen Nyoni
author_sort Pardon Mugari
collection DOAJ
description Abstract Background Due to growing resistance and continued depletion of drugs that can be used as replacements, people turn to herbal antidiabetic medicines. A polyherbal drug consisting of a mixture of two herbal plants, Zanthoxylum chalybeum and Xeroderris stuhlmannii root powder mixed in equal amounts using a tea cup, was studied to investigate its chemical composition and possible mode of action. Methods Phytochemicals were isolated using Column and Thin Layer Chromatography, and antidiabetic activity was ascertained using an enzyme inhibition model. Active compounds identity was established using 1HNMR, 13CNMR, HSQC-NMR, UV, FT-IR and MS spectroscopy. Results Results showed that the polyherbal drug consisted of two alkaloids and three anthocyanins as the major active components. PTP 1B inhibition of alkaloids was not significantly different from that of metformin with percentage inhibition of 78.6 ± 3.2 and 79.6 ± 2.3%. The anthocyanins inhibited PTP 1B enzyme significantly better than metformin with percentage inhibition of 88.2 ± 3.2, 90.3 ± 2.3 and 93.6 ± 2.9%. One new compound, an alkaloid, 1, 2-dimethoxy-12-methyl-7-(3-methylbut-2-en-1-yl)-12, 13-dihydro [1,3] benzodioxolo [5,6-c] phenanthridin-13-ol, one previously reported alkaloid berberine, IUPAC name, 9,10-dimethoxy-5,6-dihydro[1,3] dioxolo [4',5':6,7] isoquinolino [2,1-b][2] benzazin-7-ium and three anthocyanins,, malvidin 3-o-glucoside, pelargonidin-3-O-gucoside and malvidin 3, 5-O-diglucoside were identified as the active compounds in the polyherbal drug extract. Conclusion Presence of alkaloids and anthocyanins that have PTP 1B inhibitory activity showed that the polyherbal drug is a potential medicine for managing diabetes.
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spelling doaj-art-9729272ff403413994666eaa4202407e2025-01-26T12:14:08ZengSpringerOpenBulletin of the National Research Centre2522-83072025-01-0149111110.1186/s42269-025-01300-yChemical composition by PTP 1B inhibitory activity guided analysis of a plant- based antidiabetic polyherbal drug used in ethnomedical systemsPardon Mugari0Pamhidzai Dzomba1Stephen Nyoni2Chemistry Department, Chinhoyi University of TechnologyChemistry Department, Faculty of Science, Bindura University of Science EducationChemistry Department, Chinhoyi University of TechnologyAbstract Background Due to growing resistance and continued depletion of drugs that can be used as replacements, people turn to herbal antidiabetic medicines. A polyherbal drug consisting of a mixture of two herbal plants, Zanthoxylum chalybeum and Xeroderris stuhlmannii root powder mixed in equal amounts using a tea cup, was studied to investigate its chemical composition and possible mode of action. Methods Phytochemicals were isolated using Column and Thin Layer Chromatography, and antidiabetic activity was ascertained using an enzyme inhibition model. Active compounds identity was established using 1HNMR, 13CNMR, HSQC-NMR, UV, FT-IR and MS spectroscopy. Results Results showed that the polyherbal drug consisted of two alkaloids and three anthocyanins as the major active components. PTP 1B inhibition of alkaloids was not significantly different from that of metformin with percentage inhibition of 78.6 ± 3.2 and 79.6 ± 2.3%. The anthocyanins inhibited PTP 1B enzyme significantly better than metformin with percentage inhibition of 88.2 ± 3.2, 90.3 ± 2.3 and 93.6 ± 2.9%. One new compound, an alkaloid, 1, 2-dimethoxy-12-methyl-7-(3-methylbut-2-en-1-yl)-12, 13-dihydro [1,3] benzodioxolo [5,6-c] phenanthridin-13-ol, one previously reported alkaloid berberine, IUPAC name, 9,10-dimethoxy-5,6-dihydro[1,3] dioxolo [4',5':6,7] isoquinolino [2,1-b][2] benzazin-7-ium and three anthocyanins,, malvidin 3-o-glucoside, pelargonidin-3-O-gucoside and malvidin 3, 5-O-diglucoside were identified as the active compounds in the polyherbal drug extract. Conclusion Presence of alkaloids and anthocyanins that have PTP 1B inhibitory activity showed that the polyherbal drug is a potential medicine for managing diabetes.https://doi.org/10.1186/s42269-025-01300-yPolyherbal drugAntidiabetic activityPTP 1BDiabetes mellitus 2
spellingShingle Pardon Mugari
Pamhidzai Dzomba
Stephen Nyoni
Chemical composition by PTP 1B inhibitory activity guided analysis of a plant- based antidiabetic polyherbal drug used in ethnomedical systems
Bulletin of the National Research Centre
Polyherbal drug
Antidiabetic activity
PTP 1B
Diabetes mellitus 2
title Chemical composition by PTP 1B inhibitory activity guided analysis of a plant- based antidiabetic polyherbal drug used in ethnomedical systems
title_full Chemical composition by PTP 1B inhibitory activity guided analysis of a plant- based antidiabetic polyherbal drug used in ethnomedical systems
title_fullStr Chemical composition by PTP 1B inhibitory activity guided analysis of a plant- based antidiabetic polyherbal drug used in ethnomedical systems
title_full_unstemmed Chemical composition by PTP 1B inhibitory activity guided analysis of a plant- based antidiabetic polyherbal drug used in ethnomedical systems
title_short Chemical composition by PTP 1B inhibitory activity guided analysis of a plant- based antidiabetic polyherbal drug used in ethnomedical systems
title_sort chemical composition by ptp 1b inhibitory activity guided analysis of a plant based antidiabetic polyherbal drug used in ethnomedical systems
topic Polyherbal drug
Antidiabetic activity
PTP 1B
Diabetes mellitus 2
url https://doi.org/10.1186/s42269-025-01300-y
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AT stephennyoni chemicalcompositionbyptp1binhibitoryactivityguidedanalysisofaplantbasedantidiabeticpolyherbaldrugusedinethnomedicalsystems