Photolytic Measurement of Tissue S-Nitrosothiols in Rats and Humans In Vivo.

Photolytic Measurement of Tissue S-Nitrosothiols in Rats and Humans In Vivo.
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DOI:
10.3390/molecules27041294
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发表时间:
2022-02-15
期刊:
Molecules (Basel, Switzerland)
影响因子:
--
通讯作者:
Gaston B
Gaston B
中科院分区:
其他
文献类型:
--
作者:
Neidigh N;Alexander A;van Emmerik P;Higgs A;Plack L;Clem C;Cater D;Marozkina N;Gaston B

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S-亚硝基硫醇是体内主要由金属蛋白如NO合酶、血浆铜蓝蛋白和血红蛋白形成的不稳定的硫醇-NO加合物。异常的S-亚硝基硫醇合成和catalysts有助于许多疾病,从哮喘到感染性休克。目前在体内定量S-亚硝基硫醇的方法并不理想。样品需要从体内取出进行分析,并且S-亚硝基硫醇可以在离体处理过程中分解。在这里,我们已经开发出一种非侵入性的设备来测量哺乳动物组织的S-亚硝基硫醇原位非侵入性使用紫外线(UV)光,这会导致NO释放的S-亚硝基硫醇浓度成比例。我们在体外验证的测定,然后,我们将其应用于测量S-亚硝基硫醇在大鼠和人体内的体内。该方法对0.5 µM敏感,具有特异性(未检测到其他氮氧化物),并且在大鼠和人体中具有重现性。这种非侵入性的S-亚硝基硫醇测量方法可能适用于人类疾病。
S-nitrosothiols are labile thiol-NO adducts formed in vivo primarily by metalloproteins such as NO synthase, ceruloplasmin, and hemoglobin. Abnormal S-nitrosothiol synthesis and catabolism contribute to many diseases, ranging from asthma to septic shock. Current methods for quantifying S-nitrosothiols in vivo are suboptimal. Samples need to be removed from the body for analysis, and the S-nitrosothiols can be broken down during ex vivo processing. Here, we have developed a noninvasive device to measure mammalian tissue S-nitrosothiols in situ non-invasively using ultraviolet (UV) light, which causes NO release in proportion to the S-nitrosothiol concentration. We validated the assay in vitro; then, we applied it to measure S-nitrosothiols in vivo in rats and in humans. The method was sensitive to 0.5 µM, specific (did not detect other nitrogen oxides), and was reproducible in rats and in humans. This noninvasive approach to S-nitrosothiol measurements may be applicable for use in human diseases.
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发表时间: 1998-11-27
影响因子: 3.1
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