2002
DOI: 10.1080/003655402_000028063
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Decrease in Cochlear Blood Flow with Infusion of Nitric Oxide Synthase Inhibitor and its Recovery with L-arginine Infusion: Comparison with Abdominal Blood Flow and Auricular Blood Flow

Abstract: We observed changes in cochlear blood flow (CoBF), abdominal blood flow (AbBF) and auricular blood flow (AuBF) in rats after administration of the nitric oxide (NO) synthase inhibitor N-nitro-L-arginine-methyl ester (L-NAME). Ten min after i.v. infusion of L-NAME, L-arginine, a substrate of NO, was infused (100 mg/kg) intravenously. Using a laser Doppler flowmeter, changes in blood flow were recorded from the basal turn of the right cochlea, abdominal wall or right auricle, and systemic blood pressure (BP) was… Show more

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“…NO also plays a key role in maintaining cochlear blood flow under pathological conditions, such as focal cochlear microcirculation disorder (211). Nonspecific NOS activators increase blood flow in the spiral modiolar artery, and inhibitors decrease it, primarily through actions at the level of the precapillary arteriole (116,117). Opposing actions of nNOS and eNOS have also been shown in the central nervous system, where nNOS is involved in tissue injury, while eNOS maintains blood flow (119).…”
Section: Cgmp and Cochlear Blood Flowmentioning
confidence: 99%
“…NO also plays a key role in maintaining cochlear blood flow under pathological conditions, such as focal cochlear microcirculation disorder (211). Nonspecific NOS activators increase blood flow in the spiral modiolar artery, and inhibitors decrease it, primarily through actions at the level of the precapillary arteriole (116,117). Opposing actions of nNOS and eNOS have also been shown in the central nervous system, where nNOS is involved in tissue injury, while eNOS maintains blood flow (119).…”
Section: Cgmp and Cochlear Blood Flowmentioning
confidence: 99%