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Regional and Differential Sensitivity of Umbilico-Placental Vasculature to 5-Hydroxytryptamine, Nicotine, and Ethyl Alcohol

  • B. V. Rama Sastry
  • L. K. Owens
Chapter
Part of the Trophoblast Research book series (TR)

Abstract

The fetal blood concentration of 5-hydroxytryptamine (5-HT) increases before birth (Jones and Rowsell, 1973). 5-HT decreases perfusion flow through umbilicoplacental vasculature in isolated human placenta (Gautieri and Ciuchta, 1962). Nicotine is known to release 5-HT from nervous tissues (Goodman and Weiss, 1973; Balfour, 1973; Hery et al., 1977). Among tobacco smokers, nicotine enters fetal circulation from maternal blood. Therefore, a question arises as to whether nictoine releases 5-HT which decreases fetal blood flow through placenta and contributes to fetal hypoxia and growth retardation in tobacco smokers.

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Copyright information

© Springer Science+Business Media New York 1987

Authors and Affiliations

  • B. V. Rama Sastry
    • 1
  • L. K. Owens
    • 1
  1. 1.Department of PharmacologyVanderbilt University School of MedicineNashvilleUSA

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