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|標題:||Simultaneous' flow cytometric assessment for cellular types and phagocytic abilities of the haemocytes of the hard clam, Meretrix lusoria||作者:||Tu, C.Y.
|關鍵字:||flow cytometry;clam;Meretrix lusoria;haemocytes;phagocytosis;cell;type;Vibrio vulnificus;mytilus-galloprovincialis hemocytes;density gradient centrifugation;decussatus mollusca-bivalvia;european flat oyster;crassostrea-virginica;nitric-oxide;pathogenic vibrios;oxidative;burst;eastern oysters;pecten-maximus||Project:||Fish & Shellfish Immunology||期刊/報告no：:||Fish & Shellfish Immunology, Volume 23, Issue 1, Page(s) 16-23.||摘要:||
The aim of this study was to devise a simple protocol for flow cytometric analysis to separate various haemocytic populations of the hard clam Meretrix lusoria based on the mitochondrial membrane potential diversity detected by the fluorescence probe 3,3-dihexyloxacarbocyanine iodide (DiOC6). Compared with the traditional technique for separation of haemocytic populations, continuous Percoll gradient centrifugation, our novel method was more efficient and yielded a higher ratio in separating the clams' haemocytic populations. Based on fluorescence I (FL-1) and side scatter (SSC) analysis for haemocytes stained with various fluorescent densities of DiOC6 using flow cytometer, the data showed that there were three obvious cell regions R1, R2, and R3, identified by hyalinocytes, small granulocytes and large granulocytes, respectively. At the same time our results showed that the percentages of haemocytes in R1, R2, and R3 were 49.71 +/- 0.65%., 19.35 +/- 00.74%, 30.94 +/- 0.69%, respectively. After classifying the haemocytic populations, phagocytic activity of the haemocytes was simultaneously analysed with phycoerythrin (PE)-labeled Vibrio vulnificus and detected by flow cytometry. Our results demonstrated that there were higher percentages of large granulocytes compared with hyalinocytes and the percentage of small granulocytes was related to the mitochondrial membrane potential and phagocytic activities. (c) 2006 Elsevier Ltd. All rights reserved.
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