Document Detail

Effect of intrauterine inflammation on fetal cerebral hemodynamics and white-matter injury in chronically instrumented fetal sheep.
MedLine Citation:
PMID:  19371854     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: The purpose of this study was to analyze the effects of intrauterine inflammation on cerebral hemodynamics and white-matter injury in premature fetal sheep. STUDY DESIGN: Fetuses were given an intravenous infusion of granulocyte colony-stimulating factor and an intraamniotic infusion of endotoxin; the fetuses were then assigned randomly to an acute hemorrhage group, an exchange transfusion group, or a control group. During each insult, the cerebral hemodynamics were assessed with near-infrared spectroscopy. Finally, the fetuses were processed for neuropathologic analysis and compared statistically. RESULTS: Necrotizing funisitis and chorioamnionitis were induced in all the fetuses. A significant decrease in the blood oxygen content and an increase in the brain total hemoglobin level were observed after the endotoxin infusion. Soon after hemodynamic insult, the fetuses in both the acute hemorrhage and the exchange transfusion groups showed an abrupt decrease in the total brain hemoglobin level; 4 of the 5 fetuses in each treatment group, but none of the fetuses in the control group, exhibited periventricular leukomalacia. CONCLUSION: Hemorrhagic hypotension or anemic hypoxemia might induce a sudden cessation of fetal brain-sparing effects through progressive inflammatory hypoxemia, which results in focal white-matter injuries.
Masatoshi Saito; Tadashi Matsuda; Kazuhiko Okuyama; Yoshiyasu Kobayashi; Ryuta Kitanishi; Takushi Hanita; Kunihiro Okamura
Related Documents :
15027014 - Time domain measurement of blood flow in the human fetal aorta during normal pregnancy.
463964 - Collection and use of autologous fetal blood.
9475364 - Fetal urine production rates following intrauterine transfusion.
6432014 - Fetal-neonatal status following caesarean section for fetal distress.
1590384 - Increased islet blood flow in obese rats: role of the autonomic nervous system.
3215864 - Interpretation of the krypton-81m dynamic series: the distribution of a tidal breath.
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-04-15
Journal Detail:
Title:  American journal of obstetrics and gynecology     Volume:  200     ISSN:  1097-6868     ISO Abbreviation:  Am. J. Obstet. Gynecol.     Publication Date:  2009 Jun 
Date Detail:
Created Date:  2009-06-01     Completed Date:  2009-07-01     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370476     Medline TA:  Am J Obstet Gynecol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  663.e1-11     Citation Subset:  AIM; IM    
Division of Perinatal Medicine, Tohoku University Hospital, Sendai, Miyagi, Japan.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Brain Diseases / etiology*,  physiopathology*
Cerebrovascular Circulation*
Fetal Diseases / etiology*,  physiopathology*
Fetus / physiopathology*
Inflammation / complications*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Low energy methods of phase separation in colloidal dispersions and microemulsions.
Next Document:  Mannose-binding lectin in high-risk human papillomavirus infection.