中华医学杂志(英文版)
中華醫學雜誌(英文版)
중화의학잡지(영문판)
CHINESE MEDICAL JOURNAL
2001年
9期
902-905
,共4页
雷莉%郭静萱%赵定刚%赵蕊%陈凤荣%毛节明%张萍%白若昀
雷莉%郭靜萱%趙定剛%趙蕊%陳鳳榮%毛節明%張萍%白若昀
뢰리%곽정훤%조정강%조예%진봉영%모절명%장평%백약윤
组织化学%乳酸脱氢酶%琥珀酸脱氢酶%心肌血运重建术%激光
組織化學%乳痠脫氫酶%琥珀痠脫氫酶%心肌血運重建術%激光
조직화학%유산탈경매%호박산탈경매%심기혈운중건술%격광
目的了解激光心肌血运重建术时激光对心肌的损伤.方法在狗心肌上用CO2激光打孔.术后即刻、两周时于打孔处取材,用硝基蓝四唑法作琥珀酸脱氢酶、乳酸脱氢酶组织化学染色.结果术后即刻,孔道及其周围心肌分为五个区.中央为孔道即组织汽化区,向外依次为碳化区、酶消失区、酶减少区、酶浓缩区.两周后孔道区被肉芽组织取代,周围心肌细胞酶活性正常.结论激光心肌血运重建术术后即刻,孔道周围心肌细胞酶活性由内向外依次呈消失、减少、浓缩改变.术后两周可逆性损伤的心肌细胞酶活性恢复.
目的瞭解激光心肌血運重建術時激光對心肌的損傷.方法在狗心肌上用CO2激光打孔.術後即刻、兩週時于打孔處取材,用硝基藍四唑法作琥珀痠脫氫酶、乳痠脫氫酶組織化學染色.結果術後即刻,孔道及其週圍心肌分為五箇區.中央為孔道即組織汽化區,嚮外依次為碳化區、酶消失區、酶減少區、酶濃縮區.兩週後孔道區被肉芽組織取代,週圍心肌細胞酶活性正常.結論激光心肌血運重建術術後即刻,孔道週圍心肌細胞酶活性由內嚮外依次呈消失、減少、濃縮改變.術後兩週可逆性損傷的心肌細胞酶活性恢複.
목적료해격광심기혈운중건술시격광대심기적손상.방법재구심기상용CO2격광타공.술후즉각、량주시우타공처취재,용초기람사서법작호박산탈경매、유산탈경매조직화학염색.결과술후즉각,공도급기주위심기분위오개구.중앙위공도즉조직기화구,향외의차위탄화구、매소실구、매감소구、매농축구.량주후공도구피육아조직취대,주위심기세포매활성정상.결론격광심기혈운중건술술후즉각,공도주위심기세포매활성유내향외의차정소실、감소、농축개변.술후량주가역성손상적심기세포매활성회복.
Objective Laser-induced myocardial injury was investigated in a canine transmyocardial laser revascularization model.
Methods A total of 23 channels were created in the left ventricles of 5 animals with a CO2 laser. Four animals were sacrificed immediately and one at week 2. Lactate dehydrogenase and succinate dehydrogenase in channel regions were examined with a Nitro-BT method staining.
Results Immediately after the procedure, laser channels and surrounding injured myocardium could be stratified from the center to the border into 5 concentric zones, i.e., vaporized zone, carbonized zone, enzyme-disappeared zone, enzyme-decreased zone and enzyme-concentrated zone. Two weeks later, the phenomenon disappeared.
Conclusions Immediately after transmyocardial revascularization, there is a ring of enzyme-concentrated zone at the outermost region of injured myocardium. Two weeks later, enzyme activities of reversibly injured myocytes appear to have recovered.