Takashi Sakihara

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The effects of isotocin (IT) and vasotocin (VT), which are fish analogues of mammalian oxytocin and vasopressin respectively, were examined in the isolated upper esophageal sphincter (UES) muscle. IT relaxed and VT constricted the UES muscle in a concentration-dependent manner. The relaxation by IT and the contraction by VT were completely blocked by H-9405(More)
Large herbivores such as kyphosids on coral reefs are drivers of ecosystem resilience by grazing on macroalgae and providing space for coral growth. These fishes also support recreational shore fisheries and are commonly targeted for food by fishers in the tropics. Yet, little is known about their habitat utilization and movement among inshore habitats.(More)
Isotocin is a fish analogue of the mammalian hormone oxytocin. To elucidate sites of action of isotocin (IT) in the upper esophageal sphincter (UES) muscle, a key muscle in swallowing, IT was applied after treatment with tetrodotoxin (TTX). Even after blocking nerve activity with TTX, IT relaxes the UES muscle in a concentration-dependent manner, suggesting(More)
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