Kumiko Fujisawa

Learn More
Mast cells are known effector cells in allergic and inflammatory diseases, but their precise roles in intestinal inflammation remain unknown. Here we show that activation of mast cells in intestinal inflammation is mediated by ATP-reactive P2X7 purinoceptors. We find an increase in the numbers of mast cells expressing P2X7 purinoceptors in the colons of(More)
1 The effects of substance P (SP) on the membrane and contractile properties of the smooth muscle cell, or on neuro-effector transmission in the guinea-pig ileum were observed by means of microelectrodes, double sucrose gap and tension recording.2 SP (10(-13)-10(-10)M) induced a phasic contraction of longitudinal muscle strips, but did not change the muscle(More)
Status of this Memo This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited.(More)
1. Twitch-like contractions and non-adrenergic non-cholinergic (NANC) relaxations evoked by electrical field stimulation (EFS) of the cat bronchiole were used to examine the voltage-activated calcium channels involved in excitatory and inhibitory neurotransmission in the cat bronchiole. 2. Nifedipine (50 microM), the L-type calcium channel antagonist, did(More)
We have studied the expression of glial fibrillary acidic protein(GFAP), an astrocyte specific protein in the normal developing human retina using anti-GFAP antibody. GFAP positive cells were first detected at 24 gestational weeks(GW) in the nerve fiber and ganglion cell layers in the vicinity of the optic disc. Over subsequent weeks, GFAP positive cells(More)
The effects of ethyl-7-[4-(2-methoxyphenyl)-1-piperazinyl] heptanoate dihydrochloride (SGB-483) on the smooth muscle of the guinea-pig mesenteric artery were investigated using microelectrodes. The resting membrane potential was -70.3 +/- 2.1 mV.SGB-483 (10(-8)M - 10(-4)M) did not modify the membrane potential or membrane resistance, as estimated from(More)
Status of this Memo This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited.(More)