The clinical value of cardiac Troponin T (cTnT) as a marker in assessing myocardial cell damage in the patients undergoing open heart surgery was studied. Serum cTnT and CK MB levels were measured in serial blood sam...The clinical value of cardiac Troponin T (cTnT) as a marker in assessing myocardial cell damage in the patients undergoing open heart surgery was studied. Serum cTnT and CK MB levels were measured in serial blood samples from 20 patients undergoing open heart surgery before operation, at aorta clamping, aorta opening, the end of CPB and the operation, and subsequently one h, one day, 3 days and one week after operation respectively. Ten patients receiving thoracic surgery were also subjected to the measurement of cTnT and CK MB before and 24 h after operation. The results showed that peak concentrations were reached earlier in cTnT than in CK MB, and the circulation cTnT remained high when CK MB had already decreased to normal. In 10 patients receiving thoracic surgery, cTnT level was normal and CK MB was increased in 4 patients after surgery. It was concluded that the sensitivity and specificity of cTnT was more than those of CK MB and cTnT could be used as a routine indicator for myocardiac protection.展开更多
Objective: To isolate the phenolic amides from the dried bulbs of Allium chinense and investigate their myocardium protective activities.Methods: The chemical constituents were isolated and purified by combining with ...Objective: To isolate the phenolic amides from the dried bulbs of Allium chinense and investigate their myocardium protective activities.Methods: The chemical constituents were isolated and purified by combining with silica gel column,Sephadex LH-20 column, HPLC and other chromatography techniques. Their structures were elucidated by NMR techniques and mass spectrometry. The isolated compounds were evaluated to determine their protective effect for myocardium cells in vitro.Results: Two new phenolic amides, namely, alichinemide Ⅰ(1) and alichinemide Ⅱ(2), and six konwn amides were isolated from the dried bulbs of A. chinense. The structures of compounds 3–8 were identified as 3-indolcarbaldehyde(3), 1-(2-aminophenyl)urea(4), 2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylic acid(5), N-trans-feruloyltyramine(6), N-trans-p-coumaroyltyramine(7), and N-(3,4-dimethoxyphenethyl) acetamide(8). Compound 3(50 μmol/L) showed significant inhibitory effect on the damage of H9c2 myocardial cells induced by H2O2in vitro.Conclusion: Compounds 1 and 2 were new phenolic amides. Compound 3 could be one of the potential myocardium protective constituents of A. chinense.展开更多
文摘The clinical value of cardiac Troponin T (cTnT) as a marker in assessing myocardial cell damage in the patients undergoing open heart surgery was studied. Serum cTnT and CK MB levels were measured in serial blood samples from 20 patients undergoing open heart surgery before operation, at aorta clamping, aorta opening, the end of CPB and the operation, and subsequently one h, one day, 3 days and one week after operation respectively. Ten patients receiving thoracic surgery were also subjected to the measurement of cTnT and CK MB before and 24 h after operation. The results showed that peak concentrations were reached earlier in cTnT than in CK MB, and the circulation cTnT remained high when CK MB had already decreased to normal. In 10 patients receiving thoracic surgery, cTnT level was normal and CK MB was increased in 4 patients after surgery. It was concluded that the sensitivity and specificity of cTnT was more than those of CK MB and cTnT could be used as a routine indicator for myocardiac protection.
基金supported by Natural Science Foundation of China (No. 81973191)Shanghai Natural Science Fund (No. 19ZR1428100)+1 种基金project supported by the Department of Science and Technology of Guizhou (No. [2018] 2831)the Horizontal Research Project of Shanghai Jiao Tong University (Nos. SA1700111, SA1700118)。
文摘Objective: To isolate the phenolic amides from the dried bulbs of Allium chinense and investigate their myocardium protective activities.Methods: The chemical constituents were isolated and purified by combining with silica gel column,Sephadex LH-20 column, HPLC and other chromatography techniques. Their structures were elucidated by NMR techniques and mass spectrometry. The isolated compounds were evaluated to determine their protective effect for myocardium cells in vitro.Results: Two new phenolic amides, namely, alichinemide Ⅰ(1) and alichinemide Ⅱ(2), and six konwn amides were isolated from the dried bulbs of A. chinense. The structures of compounds 3–8 were identified as 3-indolcarbaldehyde(3), 1-(2-aminophenyl)urea(4), 2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylic acid(5), N-trans-feruloyltyramine(6), N-trans-p-coumaroyltyramine(7), and N-(3,4-dimethoxyphenethyl) acetamide(8). Compound 3(50 μmol/L) showed significant inhibitory effect on the damage of H9c2 myocardial cells induced by H2O2in vitro.Conclusion: Compounds 1 and 2 were new phenolic amides. Compound 3 could be one of the potential myocardium protective constituents of A. chinense.
