[Morphological characteristic of labyrinthine zone of rat allantoic placenta after exposure to vibration of industrial frequency].
Morfologiia
; 131(1): 68-72, 2007.
Article
em Ru
| MEDLINE
| ID: mdl-17526268
ABSTRACT
The labyrinthine zone of allantoic placenta was studied after dosated exposure to vibration. The study was carried out in pregnant female Wistar rats (n=68). Rats were subjected to short-term vibration from Day 9 to Day 13 and long-term vibration from the Day 9 to Day 18 of pregnancy (taking into account embryogenesis periodization and the development period of extraembryonic organs). Vibration table with fixed parameters (frequency of 32 Hz and acceleration of 50 m/s2) was used. Placental and fetal mass were measured, labyrinthine zone components were evaluated using the morphometric methods, while labyrinthine cord and fetal vessels along Duval's sinus were studied ultrastructurally. Labyrinth was analyzed from the point of view of rapprochement of maternal and fetal bloodstreams. It was found that the exposure to vibration together with the development of compensatory adaptive mechanisms led to chronic placental insufficiency. Experimental group with short-term vibration exposure (Days 9-13) is of particular interest since chronic placental insufficiency in this group should be considered as decompensated.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Placenta
/
Trofoblastos
/
Vibração
Tipo de estudo:
Etiology_studies
Limite:
Animals
/
Pregnancy
Idioma:
Ru
Revista:
Morfologiia
Assunto da revista:
ANATOMIA
Ano de publicação:
2007
Tipo de documento:
Article