PMID- 36405453 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20221122 IS - 1809-9777 (Print) IS - 1809-4864 (Electronic) IS - 1809-4864 (Linking) VI - 26 IP - 4 DP - 2022 Oct TI - The Induction of Hypothyroidism during Gestation Decreases Outer Hair Cell Motility in Rat Offspring. PG - e712-e717 LID - 10.1055/s-0042-1745856 [doi] AB - Introduction Perinatal hypothyroidism has a negative repercussion on the development and maturation of auditory system function. However, its long-term effect on auditory function remains unsettled. Objective To evaluate the effect of prenatal hypothyroidism on the auditory function of adult offspring in rats. Methods Pregnant Wistar rats were given the antithyroid drug methimazole (0.02% -1-methylimidazole-2-thiol- MMI) in drinking water, ad libitum, from gestational day (GD) 9 to postnatal day 15 (PND15). Anesthetized offspring from MMI-treated dams (OMTD) and control rats were evaluated by tympanometry, distortion product otoacoustic emission (DPOAE), and auditory brainstem response (ABR) at PNDs 30, 60, 90, and 120. Results Our data demonstrated no middle ear dysfunction, with the OMTD compliance lower than that of the control group. The DPOAE revealed the absence of outer hair cells function, and the ABR showed normal integrity of neural auditory pathways up to brainstem level in the central nervous system. Furthermore, in the OMTD group, hearing loss was characterized by a higher electrophysiological threshold. Conclusion Our data suggest that perinatal hypothyroidism leads to irreversible damage to cochlear function in offspring. CI - Fundacao Otorrinolaringologia. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commecial purposes, or adapted, remixed, transformed or built upon. ( https://creativecommons.org/licenses/by-nc-nd/4.0/ ). FAU - Oliveira, Priscila Feliciano de AU - Oliveira PF AUID- ORCID: 0000-0002-6443-6167 AD - Department of Health Sciences, Universidade Federal de Sergipe, Sao Cristovao, SE, Brazil. AD - Department of Speech, Language and Hearing, Universidade Federal de Sergipe, Sao Cristovao, SE, Brazil. AD - Department of Physiology, Universidade Federal de Sergipe, Sao Cristovao, SE, Brazil. FAU - Trindade, Beatriz Barros Santos AU - Trindade BBS AUID- ORCID: 0000-0003-4171-7529 AD - Department of Speech, Language and Hearing, Universidade Federal de Sergipe, Sao Cristovao, SE, Brazil. FAU - Reis, Paloma Fonseca Martins AU - Reis PFM AUID- ORCID: 0000-0002-8789-7222 AD - Department of Speech, Language and Hearing, Universidade Federal de Sergipe, Sao Cristovao, SE, Brazil. FAU - Santos, Tamara Figueiredo do Carmo AU - Santos TFDC AUID- ORCID: 0000-0003-4824-842X AD - Department of Speech, Language and Hearing, Universidade Federal de Sergipe, Sao Cristovao, SE, Brazil. FAU - Alves, Julio Cesar Santana AU - Alves JCS AUID- ORCID: 0000-0002-6516-3463 AD - Department of Health Sciences, Universidade Federal de Sergipe, Sao Cristovao, SE, Brazil. AD - Department of Veterinary Medicine, Faculdade Pio Decimo , Aracaju, SE, Brazil. AD - Department of Physiology, Universidade Federal de Sergipe, Sao Cristovao, SE, Brazil. FAU - Santana, Demetrius Silva de AU - Santana DS AUID- ORCID: 0000-0002-6216-5770 AD - Department of Physiology, Universidade Federal de Sergipe, Sao Cristovao, SE, Brazil. AD - Department of Science Computation, Universidade Federal de Sergipe, Sao Cristovao, SE, Brazil. FAU - Badaue-Passos, Daniel Jr AU - Badaue-Passos D Jr AUID- ORCID: 0000-0002-7600-0280 AD - Department of Physiology, Universidade Federal de Sergipe, Sao Cristovao, SE, Brazil. LA - eng PT - Journal Article DEP - 20220614 PL - Brazil TA - Int Arch Otorhinolaryngol JT - International archives of otorhinolaryngology JID - 101637652 PMC - PMC9668424 OTO - NOTNLM OT - cochlea OT - congenital hypothyroidism OT - hearing loss COIS- Conflict of Interests The authors declare that there is no conflict of interests. EDAT- 2022/11/22 06:00 MHDA- 2022/11/22 06:01 PMCR- 2022/06/01 CRDT- 2022/11/21 03:57 PHST- 2021/09/28 00:00 [received] PHST- 2022/03/01 00:00 [accepted] PHST- 2022/11/21 03:57 [entrez] PHST- 2022/11/22 06:00 [pubmed] PHST- 2022/11/22 06:01 [medline] PHST- 2022/06/01 00:00 [pmc-release] AID - 210697 [pii] AID - 10.1055/s-0042-1745856 [doi] PST - epublish SO - Int Arch Otorhinolaryngol. 2022 Jun 14;26(4):e712-e717. doi: 10.1055/s-0042-1745856. eCollection 2022 Oct.