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Developmental increase of total cell numbers in the murine cerebellum

机译:小鼠小脑中总细胞数的发育增加

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摘要

The cerebellum has been widely used as a paradigm to study basic mechanisms of brain development and cortical histogenesis. Its highly regular structure has always made it particularly attractive to approaches relying on, and yielding, quantitative information, which provide a cornerstone of systems-oriented integrative analyses. Astonishingly, though, a systematic quantification of cell generation during cerebellar development has so far not been provided. Here, we use the isotropic fractionator (i.e., cell counts based on tissue homogenates from anatomically difined regions; cf. Herculano-Houzel S, Lent R., J Neurosci. 2005;25:2518–21) to assess the developmental increase of total cell numbers in the murine cerebellum from embryonic day 17 into early adulthood. Our data show that the quantitative increase of cerebellar cell numbers follows a classical, S-shaped growth curve as described by the Hill-equation. The adult murine cerebellum was found to comprise a total of (44.03±0.42)*106 cells, half of which are generated before postnatal day 12±0.18. Consistent results were obtained by using two approaches to cell counting, one based on manual assessment, the other on flow cytometry. These data provide a reliable quantitative description of cerebellar growth in the mouse and define a predictive model that should allow their integration with quantitative and qualitative descriptions of cerebellar development.
机译:小脑已被广泛用作研究大脑发育和皮层组织发生的基本机制的范例。它高度规则的结构始终使它特别依赖于并产生定量信息的方法,这些方法为基于系统的集成分析奠定了基础。令人惊讶的是,迄今为止,尚未提供小脑发育过程中细胞生成的系统化定量分析。在这里,我们使用各向同性分馏器(即,基于解剖学限定区域的组织匀浆的细胞计数;参见Herculano-Houzel S,Lent R.,J Neurosci。2005; 25:2518-21)从胚胎第17天到成年初期,鼠小脑中的细胞数量。我们的数据表明,小丘细胞数量的定量增加遵循希尔方程描述的经典S形生长曲线。发现成年鼠小脑总共包含(44.03±0.42) * 10 6 细胞,其中一半在产后第12±0.18天之前产生。通过使用两种细胞计数方法获得了一致的结果,一种基于手动评估,另一种基于流式细胞仪。这些数据提供了小鼠小脑生长的可靠定量描述,并定义了预测模型,该模型应允许它们与小脑发育的定量和定性描述相结合。

著录项

  • 来源
    《The Cerebellum》 |2007年第4期|315-320|共6页
  • 作者单位

    Anatomisches Institut, Anatomie und Zellbiologie, Rheinischen Friedrich-Wilhelms-Universit?t, Nussalle 10, D-53115 Bonn, Germany;

    Anatomisches Institut, Anatomie und Zellbiologie, Rheinischen Friedrich-Wilhelms-Universit?t, Nussalle 10, D-53115 Bonn, Germany;

    Anatomisches Institut, Anatomie und Zellbiologie, Rheinischen Friedrich-Wilhelms-Universit?t, Nussalle 10, D-53115 Bonn, Germany;

    Anatomisches Institut, Anatomie und Zellbiologie, Rheinischen Friedrich-Wilhelms-Universit?t, Nussalle 10, D-53115 Bonn, Germany;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Cerebellum; development; cell counting;

    机译:小脑;发展;细胞计数;

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