INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
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IF 7.7
Minghui Wang,Xiaoxuan Xu,Mingxuan Sheng,Ming Zhang,Fang Wu,Zhi Zhao,Meng Guo,Bing Fang,Jianmin Wu
Tannic acid, a bioactive polyphenol found in various phytogenic foods and medicinal plants, has potential prevention effects on colitis, though more evidence and mechanistic studies are required to substantiate this. In this study, we investigated the effects of different doses from 0 to 3 mg/mL of tannic acid on mice, ultimately selecting a dose of 3 mg/mL for the anti-colitis trial based on growth and intestinal morphology assessments. Using the DSS-induced colitis model, we found that tannic acid may alleviate colitis by inhibiting the IL-17 - NF-κB p65 signaling pathway and modulating epigenetic pathways, particularly methylation modifications. Additionally, tannic acid altered the gut microbiota, increasing the abundances of Prevotella , Eubacterium_siraeum_group , and Enterorhabdus in the colon. Supplementation with Eubacterium siraeum via gavage also inhibited colitis, accompanied by increased folate and methylation regulators in the colon. These findings suggest that tannic acid may inhibit colitis through the suppression of the IL-17 - NF-κB pathway and the enhancement of microbiota-mediated methylation pathways.
研究领域:
免疫学
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胃肠病学
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微生物学
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分子生物学
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药理学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF OBSTETRICS AND GYNAECOLOGY RESEARCH
·
2021
·Vol. 48
·期 3
·857-865
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IF 1.73
Ming-Kun Shao,Wen-Jin Qi,Meng-Yao Hou,Dan-Dan Luo
Background The role of fungal pathogenic factors and the immune response of the vaginal epithelium in vulvovaginal candidiasis (VVC) and recurrent vulvovaginal candidiasis (RVVC) are still unclear. Our study wants to clarify whether there are differences in pathogenic factors between VVC and RVVC strains, confirm the roles of pathogenic factors in the pathogenesis of RVVC, and analyze the influence of pathogenic factors on vaginal host immunity. Methods VVC- and RVVC-causing Candida albicans strains were genotyped with 25S rDNA. Drug susceptibility assays using a modified alamarBlue broth microdilution method were carried out. Milk culture medium and egg yolk culture medium were used to measure the secreted aspartate protease (Sap) and phospholipase (Plb) activity of the samples. We used C. albicans with different Sap activity levels to induce RVVC in mice and measured interleukin 4 (IL4), interleukin 8 (IL8), and interleukin 17 (IL17) in vaginal lavage fluid at different stages of RVVC infection. Results There were no significant differences between VVC and RVVC fungi except that the Sap activity was lower for RVVC-causing C. albicans than for VVC-causing C. albicans . C. albicans with both strong Sap and weak Sap induced RVVC in mice. C. albicans with strong Sap had a reduced RVVC infection rate. In addition, C. albicans with strong Sap stimulated the vaginal epithelium to secrete more IL4, IL8, and IL17. Conclusion Compared with that of VVC-causing C. albicans , the Sap activity of RVVC-causing C. albicans was lower. C. albicans with strong Sap was less capable of causing repeated vaginal infections than that with weak Sap and stimulated the vaginal epithelium to produce more cytokines.
研究领域:
微生物学
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免疫学
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传染病学
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分子生物学
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DOI
PubMed
高影响因子
JOURNAL OF ETHNOPHARMACOLOGY
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2022
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IF 5.195
Yangyang Wang,Yanping Sun,Bingyou Yang,Qiuhong Wang,Haixue Kuang
Ethnopharmacological relevance The ‘cold’ property herbs are commonly applied in heat syndrome. Unfortunately, the underlying mechanisms of the ‘cold’ property herbs on heat syndrome has not been investigated. Aim of the study The study aimed to probe the activities of the four typical ‘cold’ property herbs on hyperthyroidism . Materials and methods Firstly, the four typical ‘heat’ property herbs were set as contrasting experiment. Then. the physical sign, thyroid function and metabolism profile (multivariate statistical analysis) were assessing the difference between the four typical ‘cod’ property herbs and the four typical ‘heat’ property herbs. H&E staining were used to confirmed the influence of the typical ‘cold’ property herbs on hyperthyroidism. A metabolomics approach combine with network pharmacology were explored the effected mechanism of the typical ‘cold’ property herbs on hyperthyroidism. the gene expression of UCP-1 was detected by RT-PCR. The metabolites pathway and target-associated metabolites were verified Na + /K + -ATP enzyme and GSH, as well IL6, IL17, MAPK and PPAR-γ, which detected by commercial kits and Western blot . Results It is proved that the four typical ‘cold’ property herbs effectively ameliorate the physical sign, thyroid function and metabolism profile in hyperthyroidism rats, but the four typical ‘heat’ property herbs showed no benefit. Moreover, the four typical ‘cold’ property herbs regulated energy metabolism, glutathione metabolism, taurine hypotaurine metabolism, thyroid hormone synthesis, arachidonic acid metabolism and linoleic acid metabolism and the inflammation mediated by inflammatory factor (IL6, IL17), Ca 2+ and MAPK signaling pathway. And the levels of UCP-1, Na + /K + -ATP enzyme, GSH, and the targets protein of IL6, IL17, MAPK and PPAR-γ were ameliorated by the four typical ‘cold’ property herbs. Conclusion The four typical ‘cold’ property herbs could alleviate hyperthyroidism by ameliorate thyroid hormone synthesis, restraining inflammation and oxidative stress via regulating energy metabolism, glutathione metabolism, taurine hypotaurine metabolism, arachidonic acid metabolism and linoleic acid metabolism and Ca 2+ /MAPK signaling pathway, which might be a useful strategy for treating hyperthyroidism.
研究领域:
民族药理学
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代谢组学
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药理学
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内分泌学
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分子生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
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