Telocytes pp 149-161

Part of the Advances in Experimental Medicine and Biology book series (AEMB, volume 913) | Cite as

Presence of Telocytes in a Non-innervated Organ: The Placenta

Chapter

Abstract

This chapter discusses the relationship between failure in placentation and the subsequent alterations in the normal structure of the placenta. Interstitial Cajal-like cells (ICLC) were observed for the first time in the human placenta in 2007 and later were named telocytes. Strong evidence confirms that in the placental chorionic villi, TC are located strategically between the smooth muscle cells (SMC) of the fetal blood vessel wall and the stromal myofibroblasts. As the placenta is a non-innervated organ and considering the strategic position of telocytes in chorionic villi, it has been postulated that their function would be related to signal transduction mechanisms involved in the regulation of the blood flow in the fetal vessels, as well as in the shortening/lengthening of the chorionic villi providing the necessary rhythmicity to the process of maternal/fetal metabolic exchange. In this context, telocytes represent part of a functional triad: “SMC of fetal blood vessel-telocyte-myofibroblast.” This triad takes part in the regulation of fetal growth and development via transport of nutrients and gases. This chapter also discusses the alterations in the metabolic maternal–fetal exchange, leading to intrauterine growth retardation and preeclampsia. Additionally, the apoptosis undergoing in the preeclamptic hypoxic placenta affects all the chorionic villi cells, including telocytes and myofibroblast, and not only trophoblast, as it has been so far considered. In consequence, we proposed that apoptosis affects the triad structure and alters the placental function, subsequently affecting the normal fetal growth and development.

Keywords

Myofibroblast Nitrotyrosine residues Placental telocytes Preeclampsia 

Abbreviations

CTB

Cytotrophoblast

EVT

Extravillous trophoblast

ICC

Interstitial cells of Cajal

ICLC

Interstitial Cajal-like cells

IUGR

Intrauterine growth restriction

NO

Nitric oxide

PE

Preeclampsia

ROS

Reactive oxygen species

SMC

Smooth muscle cells

STB

Syncytiotrophoblast

TC

Telocytes

TP

Telopode

UL-vWF

Ultra-large vWB multimers

VEGF

Vascular endothelial growth factor

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Copyright information

© Springer Science+Business Media Singapore 2016

Authors and Affiliations

  1. 1.Laboratorio de Placenta y Desarrollo Fetal, Anatomy and Developmental Biology Program, Institute of Biomedical Sciences, Faculty of MedicineUniversity of ChileSantiago 7Chile
  2. 2.Anatomy and Developmental Biology Program, Institute of Biomedical Sciences, Faculty of MedicineUniversity of ChileSantiagoChile

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