Progressive development of endometriosis and its hindrance by anti-platelet treatment in mice with induced endometriosis

Qi Zhang, Zhang Q, Liu X, Xishi Liu, Sun-Wei Guo, Sun‐Wei Guo
Reproductive biomedicine online · 2016 · vol. 34(2) , pp. 124–136 · doi:10.1016/j.rbmo.2016.11.006 · PMID:27916451 · W2554453513
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This study investigated the progressive development of endometriosis in mice and demonstrated that anti-platelet treatment could hinder its progression.

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Abstract

We have recently shown that platelets drive smooth muscle metaplasia (SMM) and fibrogenesis in endometriosis through epithelial-mesenchymal transition (EMT) and fibroblast-to-myofibroblast transdifferentiation (FMT). To see whether this is true in vivo, this prospective, randomized, and serially evaluated mouse investigation was conducted. Endometriosis was induced in female Balb/C mice, which were then randomly divided into two groups: Tanshinone IIA (TAN) and control (CTL) groups. TAN mice were treated with TAN but CTL mice received none. Every week until the 6th week after induction, five mice from each group were killed. Lesion weight was measured and lesion samples were subjected to immunohistochemistry and histochemistry analysis of platelet aggregation (CD41), E-cadherin, TGF-β1, phosphorylated Smad3, α-SMA, collagen I, CCN2, LOX, desmin and SM-MHC, and the extent of fibrosis was evaluated by Masson trichrome staining. It was found that endometriotic lesions exhibited progressive cellular changes consistent with the progressive EMT, FMT, SMM, and fibrogenesis. TAN treatment resulted in significant hindrance of EMT, FMT, SMM and fibrogenesis, and reduced lesion weight (all P-values <0.05). These data corroborate the notion that endometriotic lesions undergo progressive EMT and FMT, giving rise to SMM and ultimately fibrosis. This understanding sheds new light onto the natural history of endometriosis.

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Condition tags

endometriosis

MeSH descriptors

Endometriosis Endometriosis Platelet Aggregation Inhibitors Animals Blood Platelets Blood Platelets Cell Differentiation Endometriosis Epithelial-Mesenchymal Transition Female Fibroblasts Fibroblasts Metaplasia Mice Mice, Inbred BALB C Muscle, Smooth Muscle, Smooth Myofibroblasts Myofibroblasts Platelet Activation

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