Plasma and rectal adenosine in inflammatory bowel disease: effect of methotrexate.
Plasma and rectal adenosine in inflammatory bowel disease: effect of methotrexate.
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炎症性肠病中的血浆和直肠腺苷:甲氨蝶呤的作用。
DOI:
10.1097/00054725-199908000-00004
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发表时间:
1999
影响因子:
4.9
通讯作者:
Lipsky,JJ
中科院分区:
文献类型:
--
作者:
Egan,LJ;Sandborn,WJ;Mays,DC;Tremaine,WJ;Lipsky,JJ
In animal models, the antiinflammatory mechanism of action of methotrexate has been attributed to elevation of the extracellular concentration of the endogenous autocoid, adenosine. Our goal was to determine if methotrexate elevates adenosine concentrations in plasma and at the site of disease in patients with inflammatory bowel disease. In 10 patients with Crohn's disease or ulcerative colitis, rectal adenosine and plasma adenosine concentrations were measured before and immediately after a subcutaneous injection of methotrexate, 15 or 25 mg. The mean predose rectal adenosine concentration of 2.4 μmol/l was not significantly different from the postdose concentration of 2.1 μmol/l, p = 0.17, (paired two-tailedttest). Rectal adenosine concentration tended to correlate with rectal endoscopic disease activity,r= 0.59, p = 0.067 (Spearman rank order correlation). After methotrexate injection, neither the mean daily plasma adenosine concentration, nor the plasma adenosine at any individual time point, were significantly different from preinjection values. In patients with inflammatory bowel disease, an injection of methotrexate in the clinically effective dose range does not raise rectal or plasma adenosine concentrations. A role for adenosine as the mediator of the antiinflammatory action of methotrexate is not supported.
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影响因子:
--
作者:
Sperling,RI;Benincaso,AI;Anderson,RJ;Coblyn,JS;Austen,KF;Weinblatt,ME
通讯作者:
Weinblatt,ME
影响因子:
4.4
作者:
B. Cronstein;R. Levin;M. Philips;R. Hirschhorn;S. Abramson;G. Weissmann
通讯作者:
B. Cronstein;R. Levin;M. Philips;R. Hirschhorn;S. Abramson;G. Weissmann
DOI:
10.1016/0006-291x(73)90949-2
发表时间:
1973-01-01
影响因子:
3.1
作者:
BAUGH, CM;KRUMDIECK, CL;NAIR, MG
通讯作者:
NAIR, MG
影响因子:
--
作者:
BARON, JH;CONNELL, AM;LENNARDJONES, JE
通讯作者:
LENNARDJONES, JE
DOI:
--
发表时间:
1988-07
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
J. Appleman;N. Prendergast;T. Delcamp;J. Freisheim;Raymond L. Blakley
通讯作者:
J. Appleman;N. Prendergast;T. Delcamp;J. Freisheim;Raymond L. Blakley