PMID- 35934274 OWN - NLM STAT- MEDLINE DCOM- 20221004 LR - 20221104 IS - 1872-9738 (Electronic) IS - 0892-0362 (Linking) VI - 93 DP - 2022 Sep-Oct TI - Effects of decabromodiphenyl ether (BDE-209) on ultrasonic vocalizations emitted by rat pups during isolation. PG - 107118 LID - S0892-0362(22)00056-3 [pii] LID - 10.1016/j.ntt.2022.107118 [doi] AB - Polybrominated diphenyl ethers (PBDEs) have been worldwide used as flame retardants. Among them, decabromodiphenyl ether (BDE-209) is the most applied and becomes ubiquitous in the environment and organisms. It can alter spontaneous behavior and affect the cholinergic system in rodents. Ultrasonic vocalizations (USVs) emitted by rat pups during isolation are widely employed as neurobehavioral indexes, and the cholinergic system supports their normal expression. However, whether BDE-209 can alter isolation USVs were unknown. In this study, BDE-209 was daily administered to mothers at 0, 500, or 1000 mg/kg b.w. from gestational day (GD) 15 to postnatal day (PND) 21. On PNDs 7, 10, 13, and 16, rat pups were individually isolated from mothers, and their USVs were recorded for 5 min after 5-min habituation and then analyzed. The results indicated that BDE-209 exposure can cause acoustic alterations in isolation USVs. The high-dose pups emitted USVs with shorter duration than the control pups did. Moreover, the percentages of frequency-modulated (FM) USVs in the high-dose pups were lower than those in the control pups. The mechanisms to alter acoustic characteristics of isolation USVs need further investigation. USV analysis is a useful method that provides neurobehavioral evidence. CI - Copyright (c) 2022 Elsevier Inc. All rights reserved. FAU - Qi, Yiming AU - Qi Y AD - Division of Psychology, Graduate School of Humanities and Human Sciences, Hokkaido University, Kita 10 Nishi 7 Kita-Ku, Sapporo 060-0810, Japan. Electronic address: qiyiming@eis.hokudai.ac.jp. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20220805 PL - United States TA - Neurotoxicol Teratol JT - Neurotoxicology and teratology JID - 8709538 RN - 0 (Cholinergic Agents) RN - 0 (Flame Retardants) RN - 0 (Halogenated Diphenyl Ethers) RN - N80BQ29A0H (decabromobiphenyl ether) SB - IM MH - Animals MH - Cholinergic Agents/pharmacology MH - *Flame Retardants/toxicity MH - *Halogenated Diphenyl Ethers/toxicity MH - Rats MH - Ultrasonics MH - Vocalization, Animal OTO - NOTNLM OT - BDE-209 OT - Isolation OT - Rat pups OT - Ultrasonic vocalizations (USVs) COIS- Declaration of Competing Interest None. EDAT- 2022/08/08 06:00 MHDA- 2022/10/05 06:00 CRDT- 2022/08/07 19:37 PHST- 2022/02/22 00:00 [received] PHST- 2022/07/18 00:00 [revised] PHST- 2022/08/01 00:00 [accepted] PHST- 2022/08/08 06:00 [pubmed] PHST- 2022/10/05 06:00 [medline] PHST- 2022/08/07 19:37 [entrez] AID - S0892-0362(22)00056-3 [pii] AID - 10.1016/j.ntt.2022.107118 [doi] PST - ppublish SO - Neurotoxicol Teratol. 2022 Sep-Oct;93:107118. doi: 10.1016/j.ntt.2022.107118. Epub 2022 Aug 5.