Youko Nishida

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The oral sensory papillae of the snake (Elaphe quadrivirgata), comprising a compound sensory system located along the tooth rows, were studied by light microscopy, immunohistochemistry for neuron specific enolase and S 100 protein, and scanning and transmission electron microscopy. Each sensory papilla exhibited a single taste bud and free nerve endings in(More)
The effects of sex hormones on purine metabolism were investigated in rats. No influence on purine synthesis was shown by the injection of estrogen and androgen. The plasma urate levels were significantly lowered from 2.43±1.04 mg/100 ml to 1.53±0.57 mg/100 ml by the injection of progesterone. Urinary excretion of uric acid plus allantoin was slightly(More)
We herein describe a 33-year-old female who recurrently exhibited urticaria accompanied by vomiting, diarrhea and dyspnea after taking red-colored food. From her history, we suspected the cochineal dye, the commonly used natural red dye in red-colored food and beverage, to be the cause of her symptoms. Oral provocation test using cochineal dye-stained(More)
Transmission-electron microscopy of cat taste buds confirmed that, as in other mammals, each taste bud comprised four distinct types of cells: Type I, Type II, Type III (gustatory), and Type IV (basal) cells. Gustatory cells made synaptic contacts with nerves to which synaptic vesicles were gathered. The following are the main findings on the cat gustatory(More)
Allopurinol-riboside competitively inhibits the action of purine nucleoside phosphorylase on inosine in vitro with aK i of 277 μmol. After simple incubation of allopurinol-riboside with PNP, allopurinol was not formed. Lymphocyte blastogenesis induced by PHA and Con A was significantly suppressed by allopurinol-riboside in a concentration-dependent manner.(More)
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