Longdan Xiegan decoction ameliorates vulvovaginal candidiasis by inhibiting the NLRP3 inflammasome via the Toll-like receptor /MyD88 pathway
Copyright © 2023 Elsevier B.V. All rights reserved..
ETHNOPHARMACOLOGICAL RELEVANCE: Longdan Xiegan decoction (LXD) is a standardized herbal prescription originally documented in the "Medical Formula Collection" by the eminent physician Wang Ang during the Qing dynasty. It has been used extensively to treat vulvovaginal candidiasis (VVC). However, despite its effectiveness, the mechanism of action remains unknown.
AIM OF THE STUDY: To elucidate the mechanism by which LXD relieves VVC via the Toll-like receptor/MyD88 pathway and activation of the NLRP3 inflammasome.
MATERIALS AND METHODS: Female Kunming mice (n = 96) were randomly divided into six groups: control, VVC model, LXD (10/20/40 mL/kg), and positive drug fluconazole. Mice were vaginally administered Candida albicans (C. albicans) solution (20 μL; 1 × 108 colony-forming units/mL), suspended for 5 min, and observed daily for changes in their condition. Continuous dilution was used to determine the number of colony-forming units. Gram, periodic acid-Schiff, Papanicolaou, and hematoxylin and eosin staining were used to determine the extent of infection. Enzyme-linked immunosorbent assay(ELISA) was used to determine the levels of proinflammatory cytokines IL-1β and IL-18. TLR2, TLR4, MyD88, NF-κB, NLRP3, ASC, and caspase-1 protein expression were determined using western blotting.
RESULTS: C. albicans infection destroyed the integrity of the vaginal mucosa, increased fungal burden and the influx of neutrophils into the vaginal cavity, and promoted the secretion of proinflammatory cytokines. C. albicans stimulated the expression of TLR2, TLR4, MyD88, NF-κB, NLRP3, ASC, and caspase-1 in vaginal tissue. Fungal burden, hyphal formation, and C. albicans adhesion were reduced in the 20 and 40 mL/kg LXD groups. Hematoxylin and eosin staining showed that inflammation was reduced and the stratum corneum had recovered in the 20 and 40 mL/kg LXD groups. LXD (20 and 40 mL/kg) significantly reduced IL-1β, IL-18 levels and the number of neutrophils in vaginal lavage and decreased TLR2, TLR4, MyD88, NF-κB, NLRP3, ASC, and caspase-1 expression.
CONCLUSIONS: This study systematically demonstrated the therapeutic effect of LXD on protein expression and pathological conditions in VVC mice. The results showed that LXD could eliminate the invasion of vaginal hyphae in mice, reduce the recruitment of neutrophils, and reduce the expression of TLR/MyD88 pathway-related proteins and NLRP3 inflammasome. The above results clearly indicate that LXD may profoundly regulate NLRP3 inflammasome through the TLR/MyD88 pathway and play a therapeutic role in VVC.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 2023 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:318 |
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| Enthalten in: |
Journal of ethnopharmacology - 318(2023), Pt A vom: 10. Jan., Seite 116869 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Feng, Xin [VerfasserIn] |
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| Links: |
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| Anmerkungen: |
Date Completed 18.09.2023 Date Revised 18.09.2023 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1016/j.jep.2023.116869 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM358921252 |
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| 245 | 1 | 0 | |a Longdan Xiegan decoction ameliorates vulvovaginal candidiasis by inhibiting the NLRP3 inflammasome via the Toll-like receptor /MyD88 pathway |
| 264 | 1 | |c 2024 | |
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| 500 | |a Date Completed 18.09.2023 | ||
| 500 | |a Date Revised 18.09.2023 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a Copyright © 2023 Elsevier B.V. All rights reserved. | ||
| 520 | |a ETHNOPHARMACOLOGICAL RELEVANCE: Longdan Xiegan decoction (LXD) is a standardized herbal prescription originally documented in the "Medical Formula Collection" by the eminent physician Wang Ang during the Qing dynasty. It has been used extensively to treat vulvovaginal candidiasis (VVC). However, despite its effectiveness, the mechanism of action remains unknown | ||
| 520 | |a AIM OF THE STUDY: To elucidate the mechanism by which LXD relieves VVC via the Toll-like receptor/MyD88 pathway and activation of the NLRP3 inflammasome | ||
| 520 | |a MATERIALS AND METHODS: Female Kunming mice (n = 96) were randomly divided into six groups: control, VVC model, LXD (10/20/40 mL/kg), and positive drug fluconazole. Mice were vaginally administered Candida albicans (C. albicans) solution (20 μL; 1 × 108 colony-forming units/mL), suspended for 5 min, and observed daily for changes in their condition. Continuous dilution was used to determine the number of colony-forming units. Gram, periodic acid-Schiff, Papanicolaou, and hematoxylin and eosin staining were used to determine the extent of infection. Enzyme-linked immunosorbent assay(ELISA) was used to determine the levels of proinflammatory cytokines IL-1β and IL-18. TLR2, TLR4, MyD88, NF-κB, NLRP3, ASC, and caspase-1 protein expression were determined using western blotting | ||
| 520 | |a RESULTS: C. albicans infection destroyed the integrity of the vaginal mucosa, increased fungal burden and the influx of neutrophils into the vaginal cavity, and promoted the secretion of proinflammatory cytokines. C. albicans stimulated the expression of TLR2, TLR4, MyD88, NF-κB, NLRP3, ASC, and caspase-1 in vaginal tissue. Fungal burden, hyphal formation, and C. albicans adhesion were reduced in the 20 and 40 mL/kg LXD groups. Hematoxylin and eosin staining showed that inflammation was reduced and the stratum corneum had recovered in the 20 and 40 mL/kg LXD groups. LXD (20 and 40 mL/kg) significantly reduced IL-1β, IL-18 levels and the number of neutrophils in vaginal lavage and decreased TLR2, TLR4, MyD88, NF-κB, NLRP3, ASC, and caspase-1 expression | ||
| 520 | |a CONCLUSIONS: This study systematically demonstrated the therapeutic effect of LXD on protein expression and pathological conditions in VVC mice. The results showed that LXD could eliminate the invasion of vaginal hyphae in mice, reduce the recruitment of neutrophils, and reduce the expression of TLR/MyD88 pathway-related proteins and NLRP3 inflammasome. The above results clearly indicate that LXD may profoundly regulate NLRP3 inflammasome through the TLR/MyD88 pathway and play a therapeutic role in VVC | ||
| 650 | 4 | |a Journal Article | |
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| 650 | 4 | |a Longdan Xiegan decoction | |
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| 650 | 4 | |a Vulvovaginal candidiasis | |
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| 650 | 7 | |a Myeloid Differentiation Factor 88 |2 NLM | |
| 650 | 7 | |a Interleukin-18 |2 NLM | |
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| 650 | 7 | |a Toll-Like Receptor 4 |2 NLM | |
| 650 | 7 | |a Eosine Yellowish-(YS) |2 NLM | |
| 650 | 7 | |a TDQ283MPCW |2 NLM | |
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| 650 | 7 | |a YKM8PY2Z55 |2 NLM | |
| 650 | 7 | |a Cytokines |2 NLM | |
| 650 | 7 | |a Caspases |2 NLM | |
| 650 | 7 | |a EC 3.4.22.- |2 NLM | |
| 700 | 1 | |a Zhang, Hao |e verfasserin |4 aut | |
| 700 | 1 | |a Hu, Kaifan |e verfasserin |4 aut | |
| 700 | 1 | |a Shi, Gaoxiang |e verfasserin |4 aut | |
| 700 | 1 | |a Wu, Daqiang |e verfasserin |4 aut | |
| 700 | 1 | |a Shao, Jing |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Tianming |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Changzhong |e verfasserin |4 aut | |
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