Low-level laser therapy to recovery testicular degeneration in rams: effects on seminal characteristics, scrotal temperature, plasma testosterone concentration, and testes histopathology

Author(s):Show less -

Rodrigues Alves, Maira Bianchi ^[1] ; de Arruda, Rubens Paes ^[2] ; Batissaco, Leonardo ^[1] ; Florez-Rodriguez, Shirley Andrea ^[1] ; Martins de Oliveira, Bruna Marcele ^[1] ; Torres, Mariana Andrade ^[3] ; Ravagnani, Gisele Mouro ^[3] ; Lanconi, Renata ^[2] ; de Almeida, Tamie Guibu ^[1] ; Storillo, Vanessa Martins ^[1] ; Vellone, Vinicius Silva ^[1] ; Franci, Celso Rodrigues ^[4] ; Thome, Helder Esteves ^[1] ; Canella, Carolina Luz ^[1] ; Cesar De Andrade, Andre Furugen ^[3] ; Carvalho Celeghini, Eneiva Carla ^[1]

Affiliation

^[1] Univ Sao Paulo, Sch Vet Med & Anim Sci, Ctr Biotechnol Anim Reprod, Dept Anim Reprod, Lab Teaching & Res Pathol Reprod, Av Duque de Caxias Norte 225, BR-13635900 Pirassununga, SP - Brazil

^[2] Univ Sao Paulo, Sch Vet Med & Anim Sci, Ctr Biotechnol Anim Reprod, Dept Anim Reprod, Lab Semen Biotechnol & Androl, Av Duque de Caxias Norte 225, BR-13635900 Pirassununga, SP - Brazil

^[3] Univ Sao Paulo, Sch Vet Med & Anim Sci, Dept Anim Reprod, Lab Androl & Embryo Technol, Av Duque de Caxias Norte 225, BR-13635900 Pirassununga, SP - Brazil

^[4] Univ Sao Paulo, Fac Med, Dept Physiol, Lab Neuroendocrinol & Reprod, BR-14049 Ribeirao Preto, SP - Brazil

• Document type: Journal article
• Source: Lasers in Medical Science; v. 31, n. 4, p. 695-704, MAY 2016.
• Web of Science Citations: 5

Abstract

The aim of this study was to investigate the efficiency of low-level laser therapy (LLLT) to recovery testicular degeneration in rams. In the first study, rams were induced to testicular degeneration by scrotal insulation, and then, they were treated using LLLT at 28 J/cm(2) (INS28) or 56 J/cm(2) (INS56) energy densities. Sperm kinetics, morphology, and membranes integrity as well as proportion of lumen area in seminiferous tubule were assessed. In the second study, rams were submitted or not to scrotal insulation and treated or not by the best protocol of LLLT defined by experiment 1 (INS28). In this study were evaluated sperm kinetics, morphology, membranes integrity, ROS production, and DNA integrity. Testosterone serum concentration and proportion of lumen area in seminiferous tubule were also analyzed. Insulation was effective in promoting sperm injuries in both experiments. Biostimulatory effect was observed in experiment 1: INS28 presented smaller proportion of lumen area (P = 0.0001) and less degeneration degree (P = 0.0002). However, in experiment 2, there was no difference between the groups (P = 0.17). In addition, LLLT did not improve sperm quality, and there was a decreasing for total and progressive motility (P = 0.02) and integrity of sperm membranes (P = 0.01) in LLLT-treated groups. Moreover, testosterone concentration was not improved by LLLT (P = 0.37). Stimulation of aerobic phosphorylation by LLLT may have led to a deregulated increase in ROS leading to sperm damages. Thus, LLLT at energy of 28 J/cm(2) (808 nm of wavelength and 30 mW of power output) can induce sperm damages and increase the quantity of cells in seminiferous tubule in rams. (AU)

• FAPESP's process: 12/00040-0 - Testicular degeneration treatment in ram with vitamin and mineral supplementation or low intensity laserterapy
• Grantee: Eneiva Carla Carvalho Celeghini
• Support Opportunities: Regular Research Grants
• FAPESP's process: 11/16744-3 - TREATMENT OF TESTICULAR DEGENERATION IN SHEEP WITH VITAMIN AND MINERAL SUPPLEMENTS OR LASER THERAPY OF LOW INTENSITY
• Grantee: Maíra Bianchi Rodrigues Alves
• Support Opportunities: Scholarships in Brazil - Master