ヒト娩出胎盤絨毛における血管走行と関連したコラーゲンの三次元分布

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概要

• 論文の詳細を見る

• In order to understand the 3-D distribution of collagen in relation to vascularization, chorionic villi of human placentae, belonging to normal pregnancies at term, were studied by scanning electron microscopy (SEM) after alkali maceration techniques, and by transmission electron microscopy (TEM). The villous tree appeared made of an uninterrupted structure of collagen fibres. The collagen fibres connected the chorionic villi axis with their basal plates and organised differently according to the various levels of villous branching. The collagen of stem villi showed copious fibres. The external fibres (facing the villous surface) were arranged mainly longitudinally. The central core of the villi (inner fibres) were arranged concentrically around the wall of the fetal vessels. Both external and internal fibres formed stratified lamellae or small parallel bundles. The inner core of stem villi showed small holes housing capillary spaces. Mature intermediate and terminal villi showed a scarce amount of collagen arranged in thin concentric layer within the villous core, surrounding numerous dilated capillary and sinusoid spaces. These observations demonstrated that the extracellular matrix of human chorionic villi is highly compartmentalised and shows a variable structural 3-D distribution depending on the branching level of the villous tree such a distribution ensures the most favourable microenvironment for feto-maternal exchanges and it is likely able to provide a modulated support to the developing chorionic fetal vessels and trophoblastic layer as well.

著者

• Bianchi Serena

  Department Of Experimental Medicine Faculty Of Medicine Chair Of Anatomy Via Vetoio Coppito 2 67100

• Macchiarelli Guido

  Department of Experimental Medicine, University of L'Aquila

• Vizza Enrico

  Gynaecologic Endoscopy And Minimally Invasive Surgery Unit Division Of Gynaecologic Oncology Nationa

• Correr Silvia

  Laboratory Of Em Pietro M. Motta Department Of Anatomy Faculty Of Medicine Via A. Borelli 50 00161 U

• Heyn Rosemarie

  Laboratory Of Em Pietro M. Motta Department Of Anatomy Faculty Of Medicine Via A. Borelli 50 00161 U

• Barberini Fabrizio

  Laboratory Of Em Pietro M. Motta Department Of Anatomy Faculty Of Medicine Via A. Borelli 50 00161 U

• Macchiarelli Guido

  Department Of Anatomy University Of Rome La Sapienza

• VIZZA Enrico

  Gynaecologic Endoscopy and Minimally Invasive Surgery Unit, Division of Gynaecologic Oncology, National Cancer Institute "Regina Elena"

• CORRER Silvia

  Laboratory for Electron Microscopy "Pietro M. Motta", Department of Human Anatomy, University of Rome La Sapienza

• BIANCHI Serena

  Department of Experimental Medicine, Faculty of Medicine, Chair of Anatomy, University of L'Aquila

• CORRER Silvia

  Laboratory of EM Pietro M. Motta, Department of Anatomy, Faculty of Medicine, University of Rome "La Sapienza"

• BARBERINI Fabrizio

  Laboratory of EM Pietro M. Motta, Department of Anatomy, Faculty of Medicine, University of Rome "La Sapienza"

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• 3-D Ultrastructural Distribution of Collagen in Human Placental Villi at Term in Relation to Vascular Tree
• ヒト娩出胎盤絨毛における血管走行と関連したコラーゲンの三次元分布
• Ultrastructure and Distribution of Interstitial Glandular Cells and Associated Elements in Human Fetal Ovaries
• Surface morphology of the zona pellucida surrounding human blastocysts obtained after in vitro fertilization
• Collagen Fibrillar Skeleton in Pregnant Rabbit Endometrium at Term : A SEM Study after NaOH Maceration

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