Inflammation is a defense mechanism against various noxious stimuli. The recruitment of host leukocytes to sites of injury results in increased regional microvascular leakage and reactive oxygen species (ROS) generation. Excessive inflammatory activity not only eliminates offending stimuli but also result in tissue damage, as evidenced in reperfusion injury of the heart. To investigate spatial-temporal evolution of acute inflammation after myocardial reperfusion injury, we monitored microvascular leakage and reactive oxygen species generation with optical mapping technique. Reperfusion injury was performed on isolated blood-perfused rat heart, and it was labeled with dihydroethidium and large molecular weight tetramethylrhodamine conjugated dextran. Tissue was illuminated with a 532 nm laser, and epifluorescence at 580 and 650 nm was collected through 2 separate band pass filters. Our results indicate that 1. Optical mapping of myocardial inflammation is feasible; and 2. Reperfusion injury elicits substantial microvascular leakage and ROS production.
|主出版物標題||Second Asian and Pacific Rim Symposium on Biophotonics - Proceedings, APBP 2004|
|出版狀態||已發佈 - 2004|
|事件||Second Asian and Pacific Rim Symposium on Biophotonics, APBP 2004 - Taipei, 臺灣|
持續時間: 十二月 15 2004 → 十二月 17 2004
|其他||Second Asian and Pacific Rim Symposium on Biophotonics, APBP 2004|
|期間||12/15/04 → 12/17/04|
ASJC Scopus subject areas