Journal of Molecular Histology

, Volume 43, Issue 3, pp 263–271 | Cite as

Structural analysis of human placental stem and terminal villi from normal and idiopathic growth restricted pregnancies

  • Shaima M. Almasry
  • Magda A. Eldomiaty
  • Amr K. Elfayomy
  • Fawzia A. Habib
  • Maha D. Safwat
Original Paper

Abstract

Studying in detail different histomorphological and pathological findings in placental stem and terminal villi of appropriate for gestational age (AGA) and idiopathic intrauterine growth restricted (IUGR) fetuses, then analyzing their correlation to the neonatal birth weight and to the some morphological features of the placenta. Fifty full-term human placentae of idiopathic IUGR and 25 of AGA pregnancies were processed for haematoxylin and eosin staining and evaluated by light microscope aided with Image Analyzer. The mean number of stem villous arteries, and the mean number of terminal villous capillaries per field are significantly lower in idiopathic IUGR group (4.63 ± 0.46, 47.09 ± 4.44, respectively) than in AGA group (12.36 ± 0.61, 73.35 ± 5.13, respectively) (p = 0.001). Both AGA and idiopathic IUGR placentae share the presence of many pathological features: (1) narrowing of stem villous arteries appears in 38 (76 %) of IUGR cases and in 9 (36 %) of AGA cases with significant difference between groups (p = 0.001); (2) cellular infiltration (villitis) of the stem villi is significantly higher in IUGR cases [24 (48 %)] than in AGA cases [2 (8 %)] (p = 0.001). The study shows significant correlation between the birth weight and different pathologic features in the stem villi as arterial number (r = 0.494; p = 0.000), arterial narrowing (r = 0.283, p = 0.004), degenerative changes (r = 0.331, p = 0.001) and villitis (r = 0.275, p = 0.005). There is also significant correlation between neonatal birth weight and terminal villous capillary number (r = 0.281, p = 0.001) but no significant correlation is found between the birth weight and terminal villous fibrotic changes (r = −0.098, p = 0.318). Histomorphological and pathological changes in the stem villi could explore the cause of idiopathic IUGR. Stem villous arterial number, arterial narrowing, degeneration and villitis could be underlying mechanisms. Further researches on the hormonal and cytokine level should be undertaken to demonstrate the precipitating factors of these changes and the possible preventing measures.

Keywords

Intrauterine growth restriction Stem villous arteries Terminal villous capillaries Histopathologic changes Villitis 

Notes

Acknowledgments

This work was supported by grant no. 29/230 from King Abdulaziz City for Science and Technology; Kingdom of Saudi Arabia. The authors gratefully acknowledge Dr. Hanan Taiel, Professor of Pathology, College of medicine, Taibah University for her help in defining the pathological features in the specimens. Thanks to research assistances for their help in recording and filing of the research data.

Conflict of interest

The authors disclose that there is no other conflict of interest regarding this work.

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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  • Shaima M. Almasry
    • 1
    • 2
  • Magda A. Eldomiaty
    • 1
    • 3
  • Amr K. Elfayomy
    • 4
    • 5
  • Fawzia A. Habib
    • 4
  • Maha D. Safwat
    • 1
    • 6
  1. 1.Department of AnatomyTaibah UniversityAlmadinah AlmonawarahSaudi Arabia
  2. 2.Department of AnatomyAl-Mansoura UniversityAl-MansouraEgypt
  3. 3.Department of AnatomyTanta UniversityTantaEgypt
  4. 4.Department of Obstetrics and GynecologyTaibah UniversityAlmadinah AlmonawarahSaudi Arabia
  5. 5.Department of Obstetrics and GynecologyZagazig UniversityZagazigEgypt
  6. 6.Department of AnatomyAlexandria UniversityAlexandriaEgypt

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