Muhammad Arif Asghar , Ao Zhang , Shixin Tang , Hang Han , Bing Wan , Jingwei Wu , Li Ping Wong , Xiao Zhang , Qinjian Zhao
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引用次数: 0
Abstract
Background
Male infertility is a global health concern, accounting for nearly half of all infertility cases. This study evaluates the toxicological effects of key infertility inducers in rodent models and explores underlying molecular mechanisms.
Methods
A systematic review and network meta-analysis (NMA) compared nine widely studied inducers: environmental toxicants (Bisphenol-A, Lead acetate, microplastics), pharmacological agents (Cyclophosphamide, Streptozotocin, Valproic acid, Tripterygium glycosides), and metabolic/physical stressors (High-Fat Diet, heat stress). Key endpoints included sperm count, motility, morphology, testis weight, and hormone levels. Network pharmacology and enrichment analyses identified molecular pathways, focusing on oxidative stress. Clinical relevance was assessed based on mechanistic alignment with human infertility.
Results
A total of 201 studies involving 3412 rodents were analyzed. NMA revealed significant differences in reproductive toxicity among inducers. Cyclophosphamide, STZ, and microplastics caused the most severe impairments, reducing sperm counts to 30.08 ± 19.1, 38.13 ± 8.2, and 18.97 ± 11.1 × 10⁶/mL, and motility to 31.73 ± 6.1 %, 30.74 ± 4.1 %, and 31.32 ± 10.2 %, respectively. Overall, sperm count, motility, and testosterone decreased by 1.46-, 1.21-, and 1.16-fold. Network pharmacology identified oxidative stress-related genes (NFE2L2, SOD1, HMOX1) as common targets, with oxidative stress emerging as shared mechanistic pathways. Trend analysis (2009–2024) revealed rising research on microplastics, HFD, and Lead acetate.
Conclusions
This first integrated toxicological and mechanistic analysis elucidates how diverse inducers impair male reproductive health. Oxidative stress contributes to toxicity, highlighting potential molecular targets for therapy. Findings support the translational relevance of rodent infertility models and guide risk assessment and mitigation strategies for stressors.
期刊介绍:
Drawing from a large number of disciplines, Reproductive Toxicology publishes timely, original research on the influence of chemical and physical agents on reproduction. Written by and for obstetricians, pediatricians, embryologists, teratologists, geneticists, toxicologists, andrologists, and others interested in detecting potential reproductive hazards, the journal is a forum for communication among researchers and practitioners. Articles focus on the application of in vitro, animal and clinical research to the practice of clinical medicine.
All aspects of reproduction are within the scope of Reproductive Toxicology, including the formation and maturation of male and female gametes, sexual function, the events surrounding the fusion of gametes and the development of the fertilized ovum, nourishment and transport of the conceptus within the genital tract, implantation, embryogenesis, intrauterine growth, placentation and placental function, parturition, lactation and neonatal survival. Adverse reproductive effects in males will be considered as significant as adverse effects occurring in females. To provide a balanced presentation of approaches, equal emphasis will be given to clinical and animal or in vitro work. Typical end points that will be studied by contributors include infertility, sexual dysfunction, spontaneous abortion, malformations, abnormal histogenesis, stillbirth, intrauterine growth retardation, prematurity, behavioral abnormalities, and perinatal mortality.