NLRP3 inflammasome gene expression and activation in leukocytospermia and non- leukocytospermia in fertile Iraqi men
حيدر فيصل غازي
Authors : Rehab Sh. AL-Maliki, Haider F. Ghazi, Kareem G. Mohamed
ABSTRACT— Corresponding Author: 2* Inflammasome activation cytokine were associated with bad seminal fluid analysis parameters among infertile men with spinal cord injury suggesting pivotal role of NLRP3 pathway in male infertility. Objective: the present study aims to measurement of NLRP3 inflammasome mRNA expression and their activation cytokines (IL-1ß and IL-18) mRNA expression in semen samples in leukocytospermia and none leukocytospermia infertile men. Methods: semen specimen were collected from 264 infertile men; conventional semen analysis was done according to World Health Organization 2010. Total RNA was extracted from whole semen cells pellet then the relative mRNA expression of the NLRP3, IL-1ß and IL-18 in semen specimens was determined by using qRT- PCR. NLRP3 and caspase-3 proteins in both sperm and leukocytes were detected by Immunoperoxidase staining. Results: there was no significant differences in the amount of NLRP3, IL-1B and IL-18 mRNA expression and NLRP3 protein in the sperm cells between leukocytospermia and non-leukocytospermia infertile men (P>0.05). In contrary there was high significant difference in the NLRP3 protein in leukocytes between these two groups (p≤0.001). While, translated protein of caspase-3 in both sperm and leukocytes was no significantly differed between these two groups (P>0.05). Conclusion: Current study suggests that the NLRP3, IL-1ß were expressed in cellular components of semen sample and their expression unrelated to the state of leukocytospermia, while po-IL- 18 is constitutively expressed in leukocytes, epithelial cells and defective sperm cells and released from these cells into seminal fluid after undergoing to apoptosis and necrosis pathways.

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