ABSTRACT
Objective@#To explore the expressions of transient receptor potential vanilloid 1 (TRPV1) and TRP ankyrin 1 (TRPA1) in the dorsal root ganglion (DRG) and their action mechanisms in the rat model of orchialgia.@*METHODS@#The models of orchialgia were established in male SD rats by injection of 2% acetic acid into the testis. Then the number of spontaneous pain responses and withdrawal latency in the model rats were recorded by behavioral tests and the expressions of TRPV1 and TRPA1 in T13－L1 DRGs determined by RT-qPCR, Western blot and immunofluorescence staining.@*RESULTS@#Compared with the normal control rats, the orchialgia models showed a significant increase in the number of spontaneous pain responses (0.13 ± 0.35 vs 22.63 ± 3.42, P<0.01) and a decrease in the withdrawal latency at 4 hours after injection (［12.75 ± 1.50］ vs ［4.85 ± 1.00］ s, P<0.05). The mRNA expressions of both TRPV1 and TRPA1 were observed in the membrane of the neurons in the DRG, the former increased by 1.77 times and the latter by 1.75 times that of the control (P<0.05).@*CONCLUSIONS@#The expressions of TRPV1 and TRPA1 were up-regulated in the DRG of the rat models of orchialgia, which may be involved in the allodynia and hyperalgesia of the rats.
Subject(s)
Animals , Male , Rats , Acetic Acid , Ganglia, Spinal , Metabolism , Hyperalgesia , Metabolism , Membrane Glycoproteins , Oxidoreductases , Rats, Sprague-Dawley , TRPA1 Cation Channel , Metabolism , TRPV Cation Channels , Metabolism , Testicular Diseases , Metabolism , Up-RegulationABSTRACT
Chlamydia trachomatis infection is one of the most prevalent sexually transmitted diseases in males and studies on its pathogenic and immunologic mechanisms are rather limited. Animal models play an important role in studying the pathogenesis, course and treatment of human diseases, and those of male genital tract chlamydial infection are relatively few and not well developed. This article focuses on the chlamydia species, animal species, infection route, infected organ, and infection process of chlamydia, as well as its impact on reproduction, aiming to provide some help for further studies of male genital tract chlamydial infection.