1. Loud noise contributes to presbycusis and tinnitus.

2. This irreversible age-related hearing loss is known as presbycusis.

3. Presbycusis may cause a severe lose of the ability to discriminate sound.

4. Conclusion:The expression of BDNF is closely correlated to presbycusis in the aged rats.

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5. In age-related hearing loss (presbycusis), changes in the inner ear that occur as you grow older cause a gradual but steady hearing loss.

6. Perhaps the most common cause of nerve deafness is presbycusis.

7. Conclusion There were significant age-related hearing loss in C57 and BALB/c. C57 and BALB/c inbred mouse strains could be served as animal models of age-related hearing loss or presbycusis.

8. Methods The Red Cell Deformability (RCD)and the levels of the blood plasma SOD and MDA in 68 patients with presbycusis and in 50 healthy old people were measured.

9. With an increase of age, the expression of ABAD was increased. Conclusions ABAD may take part in the aging of inner ears, and it may have some relation to presbycusis.

10. Conclusions The result indicates that the decrease of potassium channel function in aged rat cochlear nucleus may be related to presbycusis .

11. Conclusions These results suggest that the decrease of spiral ganglion cells and the deposition of lipofuscin in the aged may be the main cause of presbycusis .

12. Objective To assess the meaning of extended high frequency audiometry in early diagnosis of presbycusis and the relation of it to the age.

13. Conclusion The reduction of GABA positive neurons in the aged rat cochlear nucleus may be related to presbycusis .

14. Conclusion The reduction of GAD65 and GAD67 positive production in the aged rat auditory brainstem nuclei may be related to presbycusis.