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

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 (INS...

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Published in:	Lasers in medical science Vol. 31; no. 4; pp. 695 - 704
Main Authors:	Alves, Maíra Bianchi Rodrigues, de Arruda, Rubens Paes, Batissaco, Leonardo, Florez-Rodriguez, Shirley Andrea, de Oliveira, Bruna Marcele Martins, Torres, Mariana Andrade, Ravagnani, Gisele Mouro, Lançoni, Renata, de Almeida, Tamie Guibu, Storillo, Vanessa Martins, Vellone, Vinicius Silva, Franci, Celso Rodrigues, Thomé, Helder Esteves, Canella, Carolina Luz, De Andrade, André Furugen Cesar, Celeghini, Eneiva Carla Carvalho
Format:	Journal Article
Language:	English
Published:	London Springer London 01-05-2016
Subjects:	Animals Dentistry Lasers Lasers, Semiconductor - therapeutic use Low-Level Light Therapy Male Medicine Medicine & Public Health Optical Devices Optics Original Article Photonics Quantum Optics Scrotum - radiation effects Sheep, Domestic Sperm Motility Spermatozoa - physiology Testicular Diseases - radiotherapy Testis - radiation effects Testosterone - blood Biostimulation Male Spermatozoa Proliferation Sperm Infertility
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Summary:	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.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0268-8921 1435-604X
DOI:	10.1007/s10103-016-1911-1