Ultrasound Assisted Synthesis of Starch-green Tea Extract Composite and its Therapeutic Effects on Adenomyosis by Following the MAPK/ERK Signaling and Pro-inflammatory Pathways in Mice

In: Journal of Polymers and the Environment · 2024 · vol. 32(10) , pp. 5014–5023 · doi:10.1007/s10924-024-03271-z · W4396723837
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A starch-green tea extract composite ameliorated adenomyosis in mice by reducing inflammatory markers and inhibiting the MAPK/ERK signaling pathway.

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The study developed a starch–green tea extract composite hydrogel using an ultrasonication-assisted, “green” synthesis approach, followed by physicochemical characterization with FT-IR, UV-Vis spectroscopy, SEM/TEM, and EDX. For biological testing, the authors used a mouse model of experimentally induced adenomyosis via tamoxifen and assessed effects on uterine inflammation, MAPK/ERK signaling proteins (p-p38/p38, p-JNK/JNK, p-ERK/ERK) using Western blotting, qRT-PCR, and IHC. Treatment with the composite reduced MAPK/ERK pathway activity and lowered pro-inflammatory cytokines TNF-α, IL-6, and IL-1β, while also decreasing myometrial infiltration and altering thymus/spleen indices. The paper’s main caveat is that no new datasets are described as generated or analyzed, and it relies on a single in vivo model without additional model comparisons. This paper is centrally about adenomyosis — it tests an ultrasound-synthesized starch–green tea extract composite for therapeutic effects in tamoxifen-induced adenomyosis mice through MAPK/ERK and inflammatory pathways.

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Abstract

A unique starch-green tea extract composite was synthesized following a bio-inspired ‘green’ method under ultrasonication. The polar hydroxyl organofunction over the starch is coordinated with the polyphenolic phytochemicals of green tea extract to form a stable composite hydrogel. The materials were structurally analyzed through several instrumental methods such as FT-IR, UV-Vis spectroscopy, SEM, TEM and EDX. Towards biological application, the composite hydrogel was used in controlling the inflammation of adenomyosis in mice. In the in vivo design, tamoxifen was used to induce the experimental adenomyosis model in mice. After treatment, the thymus, spleen, uterine, and body weights of all the animal samples were measured. Western blotting, qRT-PCR, and immuno histochemical (IHC) staining were applied to analyze the MAPK/ERK signaling pathway protein expression in adenomyosis mice. Then, inflammatory factors expression and the myometrial infiltration were determined by qRT-PCR, ELISA, and histology examination in the uterus. The adenomyosis amelioration of starch-green tea extract composite was gained by preventing the MAPK/ERK signaling pathway including decreasing the expressions of protein and mRNA of p-p38/p38, p-JNK/JNK, and p-ERK/ERK in the uterus. The raised levels of TNF-α, IL-6, and IL-1β in adenomyosis model mice uterus and serum were also reduced after starch-green tea extract composite treatment. Starch-green tea extract composite ameliorated the adenomyosis symptoms by raising the thymus and spleen index and decreasing myometrial infiltration. Similar content being viewed by others Data Availability No datasets were generated or analysed during the current study.

References

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Acknowledgements

The authors extend their appreciation to the Deanship of Scientific Research at King Khalid University for funding this work under grant number (R.G.P.2/491/44). Funding Not applicable. Author information Authors and Affiliations Contributions Yafei Guo, Marjan Shahriari, Waleed Eltantawy, Attalla F. El-kott, Mohammed A. AlShehri, Essam H. Ibrahim: Idea generator, Conceptualization; Attalla F. El-kott: Supervision, Project management. Attalla F. El-kott, Mohammed A. AlShehri: Experimental, Data analysis; Attalla F. El-kott, Mohammed A. AlShehri: Data analysis, Writing - review & editing. Corresponding authors Ethics declarations Ethical Approval Not applicable. Conflict of interest The authors declare that there is no conflict of interest with other people or organizations that could affect this study Additional information Publisher’s Note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations. Rights and permissions Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. About this article Cite this article Guo, Y., Shahriari, M., Eltantawy, W. et al. Ultrasound Assisted Synthesis of Starch-green Tea Extract Composite and its Therapeutic Effects on Adenomyosis by Following the MAPK/ERK Signaling and Pro-inflammatory Pathways in Mice. J Polym Environ 32, 5014–5023 (2024). https://doi.org/10.1007/s10924-024-03271-z Accepted: Published: Version of record: Issue date: DOI: https://doi.org/10.1007/s10924-024-03271-z

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