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A local immuno-endocrine interaction may mediate rat adrenal glucocorticoid response to bacterial endotoxins.

机译:局部免疫-内分泌相互作用可能介导大鼠肾上腺糖皮质激素对细菌内毒素的反应。

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摘要

The effects of the bacterial endotoxin lipopolysaccharide (LPS) and interleukin (IL)-1beta on corticosterone secretion has been studied in vivo by employing the technique of in situ perfusion of the isolated rat left adrenal gland. Both LPS and IL-1beta dose-dependently raised corticosterone output, the response peaking at 60 and 90 min, respectively. IL-1 receptor antagonist dose-dependently reversed the effect of LPS and IL-1beta. The IL-1beta converting enzyme (ICE) inhibitor Ac-YVAD-CMK annulled the adrenal response to LPS, but did not affect that to IL-1beta. Collectively, these findings provide evidence that LPS, by enhancing adrenal production of IL-1beta, is able to evoke a sizable glucocorticoid response in the rat, thereby suggesting that local immuno-endocrine interactions may be operative in the adrenal gland of this species.
机译:通过使用离体大鼠左肾上腺的原位灌注技术,体内研究了细菌内毒素脂多糖(LPS)和白介素(IL)-1β对皮质酮分泌的影响。 LPS和IL-1β剂量依赖性地增加了皮质酮的输出,其响应分别在60分钟和90分钟达到峰值。 IL-1受体拮抗剂剂量依赖性地逆转了LPS和IL-1beta的作用。 IL-1beta转换酶(ICE)抑制剂Ac-YVAD-CMK取消了对LPS的肾上腺反应,但不影响对IL-1beta的肾上腺反应。总的来说,这些发现提供了证据,即脂多糖通过增强IL-1β的肾上腺生成,能够在大鼠中引起相当大的糖皮质激素反应,从而表明局部免疫-内分泌相互作用可能在该物种的肾上腺中起作用。

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