This study addresses the relationship between cochlear oxidative damage and auditory cortical injury in a rat model of repeated noise exposure. To test the effect of increased antioxidant defenses, a water-soluble coenzyme Q10 analog (Qter) was used. We analyzed auditory function, cochlear oxidative stress, morphological alterations in auditory cortices and cochlear structures, and levels of co...

The cochlear implants consisting of electrode arrays for electrically stimulating the auditory nerve fibres have been developed to restore hearing for profoundly deaf people. The insertion of a straight electrode array into the spiral cochlear scala tympani has unfortunately been found to damage delicate structures within the inner ear such as the spiral ligament and the basilar membrane. Altho...

Temporal bone fracture and blunt head trauma was once considered as contraindication for the surgery. Increasing numbers of successful cochlear implantation are being reported. However, the outcome of cochlear implantation in severe damaged brain is unclear. A multichannel cochlear implant was successfully implanted in a 33-year-old man who had both sensorineural deafness, left hemiplegia due t...

Hearing loss and meningitis were correlate in some aspects. Hearing loss is the situation that can be shown in cochlear or retrocochlear defects. Cochlear hearing loss is caused by inner or outer hair cell damage (however cochlear hearing loss has another causes, such as defect of arterial spiral ganglion, basilar and tectorial membrane) and retrocochlear hearing loss has neural origin and meni...

hearing loss and meningitis were correlate in some aspects. hearing loss is the situation that can be shown in cochlear or retrocochlear defects. cochlear hearing loss is caused by inner or outer hair cell damage (however cochlear hearing loss has another causes, such as defect of arterial spiral ganglion, basilar and tectorial membrane) and retrocochlear hearing loss has neural origin and meni...

A large amount of energy produced by active aerobic metabolism is necessary for the cochlea to maintain its function. This makes the cochlea vulnerable to blockade of cochlear blood flow and interruption of the oxygen supply. Although certain forms of human idiopathic sudden sensorineural hearing loss reportedly arise from ischemic injury, the pathological mechanism of cochlear ischemia-reperfu...

Deafness affects more than 40 million people in the UK and the USA, and many more world-wide. The primary cause of hearing loss is damage to or death of the sensory receptor cells in the inner ear, the hair cells. Birds can readily regenerate their cochlear hair cells but the mammalian cochlea has shown no ability to regenerate after damage. Current research efforts are focusing on gene manipul...

L-carnitine (LC) protects cells from peroxidative damage. In this study, we tested whether L-carnitine (LC) prevents radiation-induced cochlear damage after total cranial irradiation (radiotherapy; RT). Male albino guinea pigs were randomly distributed in 3 groups. The Control group (n = 11) received neither LC nor irradiation, but saline solution ip and sham irradiation for 5 days. The RT grou...