PMID- 19271313 OWN - NLM STAT- MEDLINE DCOM- 20090615 LR - 20240426 IS - 1878-5891 (Electronic) IS - 0378-5955 (Print) IS - 0378-5955 (Linking) VI - 249 IP - 1-2 DP - 2009 Mar TI - Interactions of hearing loss and diabetes mellitus in the middle age CBA/CaJ mouse model of presbycusis. PG - 44-53 LID - 10.1016/j.heares.2009.01.007 [doi] AB - Recently, we characterized the more severe nature of hearing loss in aged Type 2 diabetic human subjects [Frisina, S.T., Mapes, F., Kim, S., Frisina, D.R., Frisina, R.D., 2006. Characterization of hearing loss in aged type II diabetics. Hear. Res. 211, 103-113]. The current study prospectively assessed hearing abilities in middle age CBA/CaJ mice with Type 1 diabetes mellitus (T1DM) (STZ injection) or Type 2 diabetes mellitus (T2DM) (high fat diet), for a period of 6 months. Blood glucose, body weight and auditory tests (Auditory Brainstem Response-ABR, Distortion Product Otoacoustic Emissions-DPOAE) were evaluated at baseline and every 2 months. Tone and broad-band noise-burst responses in the inferior colliculus were obtained at 6 months. Body weights of controls did not change over 6 months (approximately 32 g), but there was a significant (approximately 5 g) decline in the T1DM, while T2DM exhibited approximately 10 g weight gain. Blood glucose levels significantly increased: 3-fold for T1DM, 1.3-fold for T2DM; with no significant changes in controls. ABR threshold elevations were found for both types of diabetes, but were most pronounced in the T2DM, starting as early as 2 months after induction of diabetes. A decline of mean DPOAE amplitudes was observed in both diabetic groups at high frequencies, and for the T2DM at low frequencies. In contrast to ABR thresholds, tone and noise thresholds in the inferior colliculus were lower for both diabetic groups. Induction of diabetes in middle-aged CBA/CaJ mice promotes amplification of age-related peripheral hearing loss which makes it a suitable model for studying the interaction of age-related hearing loss and diabetes. On the other hand, initial results of effects from very high blood glucose level (T1DM) on the auditory midbrain showed disruption of central inhibition, increased response synchrony or enhanced excitation in the inferior colliculus. FAU - Vasilyeva, Olga N AU - Vasilyeva ON AD - Otolaryngology Department, University of Rochester Medical School & Dentistry, 601 Elmwood Ave., Rochester, NY 14642-8629, USA. FAU - Frisina, Susan T AU - Frisina ST FAU - Zhu, Xiaoxia AU - Zhu X FAU - Walton, Joseph P AU - Walton JP FAU - Frisina, Robert D AU - Frisina RD LA - eng GR - P01 AG009524-10/AG/NIA NIH HHS/United States GR - P01 AG009524-12/AG/NIA NIH HHS/United States GR - P01 AG009524-150005/AG/NIA NIH HHS/United States GR - P01 AG009524-140005/AG/NIA NIH HHS/United States GR - P01 AG009524-14/AG/NIA NIH HHS/United States GR - P01 AG009524-13/AG/NIA NIH HHS/United States GR - P01 AG009524-11A10005/AG/NIA NIH HHS/United States GR - P01 AG009524-130005/AG/NIA NIH HHS/United States GR - P01 AG009524-120005/AG/NIA NIH HHS/United States GR - P01 AG009524-11A1/AG/NIA NIH HHS/United States GR - P01 AG09524/AG/NIA NIH HHS/United States GR - P01 AG009524-15/AG/NIA NIH HHS/United States GR - P30 DC05409/DC/NIDCD NIH HHS/United States GR - P01 AG009524-100005/AG/NIA NIH HHS/United States GR - P01 AG009524/AG/NIA NIH HHS/United States GR - P30 DC005409/DC/NIDCD NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PL - Netherlands TA - Hear Res JT - Hearing research JID - 7900445 RN - 0 (Blood Glucose) SB - IM MH - Aging/physiology MH - Animals MH - Auditory Threshold MH - Blood Glucose/metabolism MH - Diabetes Mellitus, Experimental/*complications/physiopathology MH - Diabetes Mellitus, Type 2/complications MH - Disease Models, Animal MH - Evoked Potentials, Auditory MH - Evoked Potentials, Auditory, Brain Stem MH - Humans MH - Inferior Colliculi/physiopathology MH - Male MH - Mice MH - Mice, Inbred CBA MH - Otoacoustic Emissions, Spontaneous MH - Presbycusis/*complications/physiopathology PMC - PMC2891295 MID - NIHMS93001 EDAT- 2009/03/10 09:00 MHDA- 2009/06/16 09:00 PMCR- 2010/07/01 CRDT- 2009/03/10 09:00 PHST- 2009/03/10 09:00 [entrez] PHST- 2009/03/10 09:00 [pubmed] PHST- 2009/06/16 09:00 [medline] PHST- 2010/07/01 00:00 [pmc-release] AID - S0378-5955(09)00010-0 [pii] AID - 10.1016/j.heares.2009.01.007 [doi] PST - ppublish SO - Hear Res. 2009 Mar;249(1-2):44-53. doi: 10.1016/j.heares.2009.01.007.