Testing human sperm chemotaxis: how to detect biased motion in population assays.

Testing human sperm chemotaxis: how to detect biased motion in population assays.
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DOI:
10.1371/journal.pone.0032909
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发表时间:
2012
期刊:
影响因子:
3.7
通讯作者:
Friedrich BM
Friedrich BM
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Armon L;Caplan SR;Eisenbach M;Friedrich BM

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偏置运动的细胞中的浓度梯度的化学引诱剂的运动经常被研究的群体水平。这种方法已特别用于人类精子趋化性测定,其中响应细胞的分数较低,并且偏向运动的检测取决于细微的差异。在这些测定中,可以采用统计测量如游泳方向的群体优势比来推断趋化性能。在这里,我们报告了一种改进的方法来评估实验确定的比值比的统计学意义,并讨论了精子游泳的方向持久性所产生的数据相关性的强烈影响。
Biased motion of motile cells in a concentration gradient of a chemoattractant is frequently studied on the population level. This approach has been particularly employed in human sperm chemotactic assays, where the fraction of responsive cells is low and detection of biased motion depends on subtle differences. In these assays, statistical measures such as population odds ratios of swimming directions can be employed to infer chemotactic performance. Here, we report on an improved method to assess statistical significance of experimentally determined odds ratios and discuss the strong impact of data correlations that arise from the directional persistence of sperm swimming.
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