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Carbon monoxide of vascular origin attenuates the sensitivity of renal arterial vessels to vasoconstrictors

Open access
Kaide, Jun-Ichi, Zhang, Fan, Wei, Yuan, Jiang, Houli, Yu, Changhua, Wang, WenHui, Balazy, Michael, Abraham, Nader G., Nasjletti, Alberto·2001·Journal of Clinical Investigation

Abstract

Rat renal interlobar arteries express heme oxygenase 2 (HO-2) and manufacture carbon monoxide (CO), which is released into the headspace gas. CO release falls to 30% and 54% of control, respectively, after inhibition of HO activity with chromium mesoporphyrin (CrMP) or of HO-2 expression with antisense oligodeoxynucleotides (HO-2 AS-ODN). Patch-clamp studies revealed that CrMP decreases the open probability of a tetraethylammonium-sensitive (TEA-sensitive) 105 pS K channel in interlobar artery smooth muscle cells, and that this effect of CrMP is reversed by CO. Assessment of phenylephrine-induced tension development revealed reduction of the EC(50) in vessels treated with HO-2 AS-ODN, CrMP, or TEA. Exogenous CO greatly minimized the sensitizing effect on agonist-induced contractions of agents that decrease vascular CO production, but not the sensitizing effect of K channel blockade with TEA. Collectively, these data suggest that vascular CO serves as an inhibitory modulator of vascular reactivity to vasoconstrictors via a mechanism that involves a TEA-sensitive K channel.

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Metadata

Authors
Kaide, J.-I., Zhang, F., Wei, Y., Jiang, H., Yu, C., Wang, W., Balazy, M., Abraham, N. G., & Nasjletti, A.
Venue
Journal of Clinical Investigation
Published
2001-05-01
Volume
107
Issue
9
Pages
1163-1171
ISSN
0021-9738 (ISSN-L)
OpenAlex
W2170431734
Cited by
184
References
0
FWCI
6.08
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Carbon monoxide of vascular origin attenuates the sensitivity of renal arterial vessels to vasoconstrictors. https://app.cochat.ai/papers/10.1172/jci11218
The paper
Kaide, J.-I., Zhang, F., Wei, Y., Jiang, H., Yu, C., Wang, W., Balazy, M., Abraham, N. G., & Nasjletti, A. (2001). Carbon monoxide of vascular origin attenuates the sensitivity of renal arterial vessels to vasoconstrictors. Journal of Clinical Investigation. https://doi.org/10.1172/jci11218

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