Thyme ( Thymus vulgaris [Lamiaceae]) Leaves Inhibit Contraction of the Nonpregnant Mouse Uterus

Enitome E. Bafor, C. B. Kalu, Osemelomen Omoruyi, Uloma B. Elvis-Offiah, RuAngelie Edrada‐Ebel
In: Journal of Medicinal Food · 2020 · vol. 24(5) , pp. 541–550 · doi:10.1089/jmf.2020.0076 · PMID:32758061 · W3048143271
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Abstract

Dysmenorrhea is painful menstrual periods, which affects 25% of women within reproductive age and has a prevalence of 67.2–90.0%. Current treatment has several adverse effects and can be ineffective once the pain is initiated. Thymus vulgaris traditionally used for pain management was investigated in this study for its activity on uterine contraction in the nonpregnant uterus, as a parameter for dysmenorrhea. The dried leaves of T. vulgaris were macerated in water, and the resulting aqueous extract was investigated on the isolated mouse uterus. Parameters investigated included spontaneous contractions, oxytocin-induced contractions, and high potassium chloride (KCl; 80 mM)-induced tonic contractions. Mass spectrometric analysis of the thyme extract was also performed using liquid chromatography–high-resolution Fourier Transform mass spectrometry. Thyme extract inhibited the amplitude and frequency of spontaneous and oxytocin-induced uterine contractions. It also inhibited KCl-induced tonic contractions. The activities observed suggest that T. vulgaris inhibits uterine contractions through blockade of extracellular voltage-gated calcium channels. Secondary metabolites detected included compounds belonging to chlorogenic phytochemical class and flavonoids, which are known to have activities on extracellular calcium blockade. This study has shown that aqueous T. vulgaris extract, also known as thyme, inhibits contractions of the nonpregnant uterus and can be a lead plant in the drug discovery process for the management of dysmenorrhea.

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dysmenorrhea

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organisms 14
thymus vulgaris thymus symphoremataceae transgenic mice cyphostemma uter thymus vulgaris t. castro psl-1703 transgenic mice thymus vulgaris thymus vulgaris t. castro psl-1703 t. castro psl-1703 thymus vulgaris mosquito plant
chemicals 5
water potassium chloride flavonoids calcium

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