关于肾小球旁器细胞及其生理和病理条件下的变化,近些年来的研究取得了新的进展,本文综合有关文献,以供参考。肾小球旁器由输入小动脉、输出小动脉、致密斑和球外系膜四种成分组成,包括四种细胞,即颗粒细胞、无颗粒细胞、致密斑细胞和极周细胞(图Ⅰ)。这四种细胞相互关联,共同完成重要的生理功能。一、颗粒细胞(球旁细胞) 颗粒细胞主要位于肾小球输入小动脉中膜内,少数存在于输出小动脉壁上,在球外系膜区域以及在小 With regard to the change of the glomerular plexus cells and their physiological and pathological conditions, new progress has been made in recent years. This article is a comprehensive reference to the literature. Glomerular bypass device by the importation of small arteries, the output of small arteries, dense plaques and extrahepatic mesenchyme four components, including four kinds of cells, namely, granulosa cells, non-granulosa cells, dense plaques and polar cells (Figure I) . These four kinds of cells are interrelated and work together to accomplish important physiological functions. First, granulosa cells (paracellular cells) Granulocytes are mainly located in the glomerular afferent arterioles within the membrane, a few exist in the output of the arteriole wall, in the outer sphere of the ball and in the small