Carbon monoxide exogenous

Carbon monoxide Exogenous organic and mineral acids... 

Lemon, B. J. and Peters, J. W. (1999) Binding of exogenously added carbon monoxide at the active site of the iron-only hydrogenase (CpI) from Clostridium pasteurianum. Biochemistry, 38, 12969-73. 

It is known that secondary PD can be the result of damage to the brain by exogenous trauma or agents. For example Mn produces parkinsonian symptoms in exposed minors. Carbon monoxide, cyanide and carbon disulfide poisoning in industrial settings have ended up in conditions like PD. 

The importance of reaction (13) was also shown with stimulated human neutrophils, which generate OJ and are thus able to lyse erythrocytes. This hemolysis was inhibited by exogenous (Cu,Zn)-SOD in contrast with the heat-denatured enzyme and with catalase. When hemoglobin in the erythrocytes was converted into methemoglobin by a nitrite treatment, SOD became ineffective, but exogenous catalase protected. The erythrocyte became resistant to hemolysis when treated with carbon monoxide, whereby the formation of methemoglobin was blocked and reaction (13) avoided... 

Sethi, J.M., Otterbein, L.E., Choi, A.M.K. (2002). Differential modulation by exogenous carbon monoxide of TNF-a stimulated mitogen-activated protein kinase in rat pulmonary artery endothelial cells. Antioxid. Redox Signal. 4 241-58. 

Carbon monoxide (CO) is a colorless, odorless, tasteless gas that is a product of incomplete combustion of carbonaceous material. Common exogenous sources of carbon monoxide include cigarette smoke, gasoline engines, and improperly ventilated home heating units. Small amounts of carbon monoxide are produced endogenously in the metabolic con-... 

The spectrophotometric methods generally compare favorably with gas chromatographic procedures at carboxy-hemoglobm concentrations greater than 2% to 3%, but their precision is poor below these levels. Therefore, they are sufficiently accurate and precise for measurement of carbon monoxide after exogenous exposure but are too insensitive to detect the increased endogenous production of carbon monoxide that occurs in hemolytic anemias. 

Yamamoto, T., S. Umemura, and H. Kaneko Effect of exogenous potassium on the reduction in tar, nicotine and carbon monoxide deliveries in the mainstream smoke of cigarettes Beitr. Tabakforsch. Int. 14 (1990) 379-385. 

The normal concentration of carboxyhaemoglobin in the blood of non-smokers is approximately 0.5%. This amount of carboxyhaemoglobin (COHb) is attributed to the endogenous production of carbon monoxide during the heme catabolism. The absorption of exogenous carbon monoxide increases the amount of the COHb in the blood. This increase is proportional to the oxide concentration in the air and to the duration of the exposure and rate of the subject oxygenation. A continuous exposure of... 

The formation of a stable (rj -C.G) ketene compound [(ri -CsHs) (C0)2Fe (CH2=C=0)][PF6 ] by carbonylation of an iron-methylidene complex ](ri -C5H5)(CO)2Fe+=CH2)][PF6 ] at 25 °C and 6 bar carbon monoxide pressure was described. Carbon-13 labeling study has shown that the electrophilic methylidene ligand picks up exogenous carbon monoxide and not a coordinated one [54]. 

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