Mechanism of Chlamydia trachomatis causing tubal ectopic pregnancy (EP) is not well understood. Tetraspanins (tspans), activin-A, and inhibin-A might play a role in the development of pathological conditions leading to EP. The study aimed to elucidate the expression of tspans, activin-A, and inhibin-A with a role of associated cytokines in C. trachomatis-associated EP and analyze interacting partners of DEGs, with an expression of a few important interacting genes. Fallopian tissue and serum were collected from 100 EP (Group I) and 100 controls (Group II) from SJH, New Delhi, India. Detection of C. trachomatis was done by polymerase chain reaction (PCR) and IgG antibodies were detected by enzyme-linked immunosorbent assay. Expression of tspans, activin-A, inhibin-A, and cytokines was analyzed by real time (RT)-PCR and their interacting genes were assessed by STRING. Expression of few disease-associated interacting genes was studied by RT-PCR. A total of 29% (Group I) were C. trachomatis positive. Tspans and activin-A were significantly upregulated, while inhibin-A was significantly downregulated in Group Ia. ITGA1, TLR-2, ITGB2, and Smad-3 were a few interacting genes. Expression of ITGA1, TLR-2, and Smad-3 was significantly upregulated in C. trachomatis-positive EP. Results suggested dysregulated tspans, activin-A, and inhibin-A might play a role in C. trachomatis-infected tubal EP.
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