Prevalence and phenomenology of mood, anxiety, alcohol and substance related disorders in workers with chronic solvent induced encephalopathy (CSE)
- 作者：I. Visser* ; E. Wekking ; A. de Boer ; E.A. de Joode ; M. van Hout ; S. van Dorsselaar
- 关键词：Cell cycle ; Deconvolution microscopy ; DNA quantification ; Fluorescence-activated cell sorting ; Histone modification ; Trypanosoma brucei
- 刊名：Journal of Affective Disorders
- 出版年：2008
- 期刊代码：141_01650327
- 类别：med
- 出版时间：March 2008
- 卷：107
- 期：Supplement 1
- 页码：S95-S96
- 文件大小：62 K
摘要
Trypanosoma brucei has two DNA compartments: the nucleus and the kinetoplast. DNA replication of these two compartments only partially coincides. Woodward and Gull [Woodward R, Gull K. Timing of nuclear and kinetoplast DNA replication and early morphological events in the cell cycle of Trypanosoma brucei. J Cell Sci 1990;95:49–57] comprehensively studied the relative timing of the replication and segregation of nuclear DNA (nDNA) and kinetoplast DNA (kDNA). Others have since assumed the consistency of morphological indicators of cell-cycle stage among strains and conditions. We report the use of quantitative DAPI imaging to determine the cell-cycle stage of individual procyclic cells. Using this approach, we found that kinetoplast elongation occurs mainly during nuclear S phase and not during G2, as previously assumed. We confirmed this finding by sorting cells by DNA content, followed by fluorescence microscopy. In addition, simultaneous quantitative imaging at two wavelengths can be used to determine the abundance of cell-cycle-regulated proteins during the cell cycle. We demonstrate this technique by co-staining for the non-acetylated state of lysine 4 of histone H4 (H4K4), which is enriched during nuclear S phase.