Low-level laser therapy for prevention of noise-induced hearing loss in rats

Noninvasive low-level laser therapy (LLLT) is neuroprotective, but the mechanism of this effect is not fully understood. In this study, the use of LLLT as a novel treatment for noise-induced hearing loss (NIHL) is investigated. Sprague–Dawley rats were exposed to intense noise and their right ears were irradiated with an 808nm diode laser at an output power density of 110 or 165mW/cm2 for a 30 min period for 5
consecutive days. Measurement of the auditory brainstem response revealed an accelerated recovery of auditory function in the groups treated with LLLT compared with the non-treatment group at days 2, 4, 7
and 14 after noise exposure. Morphological observations also revealed a significantly higher outer hair cell survival rate in the LLLT groups. Immunohistochemical analyses for inducible nitric oxide synthase (iNOS)
and cleaved caspase-3 were used to examine oxidative stress and apoptosis. Strong immunoreactivities were observed in the inner ear tissues of the non-treatment group, whereas these signals were decreased
in the LLLT group at 165mW/cm2 power density. Our findings suggest that LLLT has cytoprotective effects against NIHL via the inhibition of iNOS expression and apoptosis.
© 2015 Elsevier Ireland Ltd. All rights reserved.

Tamura 2015 Neuroscience Letters 1

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Cómo mantener los oídos sanos de nuestros hijos

¡Es muy sencillo mantener en buen estado los oídos de nuestros niños! Sólo es ne- cesario conocer algunos he- chos biológicos sobre ellos.

1.) Los oídos son nues- tros órganos auditivos, nuestros órganos de ad- vertencia y nuestros órga- nos de equilibrio al mismo tiempo. Es fácil de descubrir esto con una sencilla prue- ba: cierra los ojos un tiempo

y experimentarás de inme- diato que tu atención va dirigida hacia los oídos.

What do your ears try to tell you with Vertigo and pressure in the ear

Ear protection and laser therapy to protect your children`s ears

What your ears try to tell you with Hyperacusis

Click on the image below to get the full article as a PDF (1,3 MB) in english and espanol:

DrLutzWilden agosto2017

Invention Of Laser Biostimulation

lux spa home laser Comp 1 0 00 00 003

AKTUELL: Harvard University /USA bestätigt die positive biologische Wirksamkeit von Low Level Laserlicht (LLLL) an Hörzellen

Photobiomodulation rescues the cochlea

Tamura 2016 Brain research 1

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