In vitro Translation of mRNA from Rat Peritoneal and Intestinal Mucosal Mast Cells

1993 ◽  
Vol 102 (1) ◽  
pp. 26-32 ◽  
Author(s):  
Toru Imai ◽  
Hidekazu Fujimaki ◽  
Tatsuya Abe ◽  
Dean Befus
Nature ◽  
1982 ◽  
Vol 300 (5888) ◽  
pp. 188-190 ◽  
Author(s):  
David M. Haig ◽  
Thomas A. McKee ◽  
Ellen E. E. Jarrett ◽  
Richard Woodbury ◽  
Hugh R. P. Miller

1995 ◽  
Vol 268 (1) ◽  
pp. G121-G127 ◽  
Author(s):  
A. G. Catto-Smith ◽  
J. L. Ripper

We aimed to establish whether gastric mucosal mast cells undergo degranulation during normal postnatal development and to correlate this with gastric electrical parameters, paracellular permeability, and macromolecular absorption. Sprague-Dawley rats were studied between 10 and 30 days after birth. Gastric mucosal mast cell degranulation occurred and was maximal on days 15 and 17, measured by histology and gastric and serum levels of rat mast cell protease II. Short-circuit current, transepithelial conductance, and permeability of voltage-clamped glandular stomach were elevated in younger animals, falling with age except for a transient but significant increase in conductance and permeability at 17 days, closely correlated with maximal mast cell degranulation. Macromolecular uptake was significantly increased in animals aged 10-15 days. Concanavalin A and antigen-induced mast cell degranulation increased conductance and permeability in vitro in younger animals. We conclude that 1) gastric mucosal mast cells degranulate during development, 2) the neonatal stomach has increased permeability and uptake of macromolecules, and 3) gastric mucosal mast cell degranulation during development may affect mucosal permeability.


1984 ◽  
Vol 5 (4) ◽  
pp. 115-119 ◽  
Author(s):  
Ellen E.E Jarrett ◽  
David M Haig

1998 ◽  
Vol 274 (5) ◽  
pp. G832-G839 ◽  
Author(s):  
Aletta D. Kraneveld ◽  
Thea Muis ◽  
Andries S. Koster ◽  
Frans P. Nijkamp

Previously, it was shown that depletion and stabilization of the mucosal mast cell around the time of challenge were very effective in reducing delayed-type hypersensitivity (DTH) reactions in the small intestine of the rat. The role of mucosal mast cells in the early component of intestinal DTH reaction was further investigated in this study. In vivo small intestinal vascular leakage and serum levels of rat mast cell protease II (RMCP II) were determined within 1 h after intragastric challenge of rats that had been sensitized with dinitrobenzene 5 days before. A separate group of rats was used to study vasopermeability in isolated vascularly perfused small intestine after in vitro challenge. To investigate the effects of mast cell stabilization on the early events of the DTH reaction, doxantrazole was used. The influence of sensory nerves was studied by means of neonatal capsaicin-induced depletion of sensory neuropeptides. Within 1 h after challenge, a significant increase in vascular permeability was found in vivo as well as in vitro. This was associated with a DTH-specific increase in RMCP II in the serum, indicating mucosal mast cell activation. In addition, doxantrazole treatment and caspaicin pretreatment resulted in a significant inhibition of the DTH-induced vascular leakage and an increase in serum RMCP II. These findings are consistent with an important role for mucosal mast cells in early vascular leakage changes of intestinal DTH reactions. In addition, sensory nervous control of mucosal mast cell activation early after challenge is demonstrated.


Author(s):  
Tomoko Yamaguchi ◽  
Yumi Ikeda ◽  
Katsuhisa Tashiro ◽  
Yasuyuki Ohkawa ◽  
Kenji Kawabata

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