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Sensitivity to 3,3'-Iminodipropionitrile Differs for High- and MidfrequencyHearing Loss in the Developing Rat

机译:对3,3'-氨基二丙腈的敏感性不同于发育期大鼠的高频和中频耳损失

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3,3'-Iminodipropionitrile (IDPN) has been demonstrated to produce a loss ofhearing following both neonatal and adult exposures. Adult exposure induces a full spectrum hearing loss, whereas early postnatal exposure produces a high-frequency loss only. The purpose of this work was to delineate the period of development during which the rat becomes sensitive to the full ototoxic effects of IDPN. Primiparous Long Evans rats or their offspring were exposed to either saline or 300 mg/kg IDPN for three consecutive days. Ages of exposure were as follows: gestational days 15-17 or postnatal days (PND) 1-3, 5-7, 15-17, 20-22, 25-27, 30-32, 40-42, or 70-72. All animals were tested as adults for auditory

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