Hyperthermia stimulates nitric oxide formation: electron paramagnetic resonance detection of .NO-heme in blood.
Hyperthermia stimulates nitric oxide formation: electron paramagnetic resonance detection of .NO-heme in blood.
复制标题
热疗刺激一氧化氮形成:电子顺磁共振检测血液中的NO-血红素。
DOI:
--
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发表时间:
1994
影响因子:
3.3
通讯作者:
C. Gisolfi
中科院分区:
文献类型:
--
作者:
D. M. Hall;Garry R. Buettner;Ronald D. Matthes;C. Gisolfi
Previous experiments from our laboratory have demonstrated that severe hyperthermia results in a selective loss of splanchnic vasoconstriction. Using electron paramagnetic resonance spectroscopy to scan whole blood samples collected in vivo from the portal vein and femoral artery of conscious unrestrained rats, we observed an increase in the concentration of spectroscopy-detectable species in portal venous blood of all heat-stressed animals. These spectra consisted of at least three distinct species: one with a broad feature having an effective g factor for the unpaired electron (g) of 2.06 assigned to the copper-binding acute phase protein ceruloplasmin, and two with narrower features that evolved at core temperatures > 39 degrees C representing a semiquinone radical and .NO-heme. This heat-induced signal displays the classic nitrogen triplet hyperfine structure (nitrogen hyperfine splitting constant = 17.5 gauss, centered at g = 2.012) that is consistent with a five-coordinate heme complex and is characteristic of an unpaired electron coupled to nitrogen in the ferrous .NO-heme adduct [(alpha 2+NO) beta 3+]2. The intensity of this signal increased approximately twofold as core temperature rose to > 39 degrees C, peaking 1 h post-heat exposure at greater than threefold basal concentration. This species was not seen in corresponding arterial blood samples. This is the first demonstration that whole body hyperthermia produces increased concentrations of radicals and metal binding proteins in the venous blood of the rat and suggests that severe hyperthermia stimulates an enhanced local release of .NO within the splanchnic circulation.
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DOI:
10.1073/pnas.88.11.4651
发表时间:
1991-06-01
影响因子:
11.1
作者:
KUBES, P;SUZUKI, M;GRANGER, DN
通讯作者:
GRANGER, DN
DOI:
--
发表时间:
1992
期刊:
The Journal of laboratory and clinical medicine
影响因子:
--
作者:
CantilenaJr,LR;Smith,RP;Frasur,S;Kruszyna,H;Kruszyna,R;Wilcox,DE
通讯作者:
Wilcox,DE
影响因子:
56.9
作者:
STAMLER, JS;SINGEL, DJ;LOSCALZO, J
通讯作者:
LOSCALZO, J
影响因子:
4.1
作者:
Ryan,AJ;Matthes,RD;Mitros,FA;Gisolfi,CV
通讯作者:
Gisolfi,CV
影响因子:
3.3
作者:
KREGEL, KC;WALL, PT;GISOLFI, CV
通讯作者:
GISOLFI, CV