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Prenatal vitamin E treatment improves lung growth in fetal rats with congenital diaphragmatic hernia.

Research Project

Project/Area Number 13671730
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Obstetrics and gynecology
Research InstitutionNagasaki University

Principal Investigator

YOSHIMURA Shuichiro  Department of Obstetrics and Gynecology, Nagasaki University School of Medicine, Nagasaki, Japan, 医学部附属病院, 講師 (00274663)

Project Period (FY) 2001 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 2002: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 2001: ¥1,600,000 (Direct Cost: ¥1,600,000)
Keywordspulmonary hypoplasia / vitamin / congenital diaphragmatic hernia / lung maturation / lung surfactant / nitrofen / rat / RT-PCR / 肺surfactant / 動物実験 / Rats / 免疫染色法
Research Abstract

ABSTRACT
OBJECTIVE : The aim of this study was to investigate whether maternal administration of vitamin E has any effect on the expression of SP-A and SP-B by immunohistochemistry and RT-PCR in lung of nitrofen-induced experimental CDH rat model.
STUDY DESIGN : The experimental CDH was induced in pregnancy rats after administration of 100mg of nitrogen on day 9.5 of gestation (term 22 days). Vitamin E (16-20 days, each 30IU dose) was given by gastric tube. Cesarean section was performed on day 21 of gestation.
The fetuses were divided into 3 groups ; group 1 control (n=20), group 2 nitrofen induced CDH(n=20), group 3 nitrofen induced with vitamin E treatment (n=20).
Indirect immunohistochemistry was performed the labelled streptavidin biotin (LSAB) method using anti SP-A and anti SP-B polyclonal antibodys. Reverse transcription polymerase chain reaction (RT-PCR) was performed to evaluate reactive amount of SP-A and SP-B mRNA expression.
RESULTS : In the lung weight/body weight ratio, the nitrofen-exposed group were significantly smaller than the control groups (p<0.01). In the CDH lung (group 2) were observed a slightly reduced number of type II pneumocytes positive for SP-A compared with the control group.
The relative amount of SP-A and SP-B were significantly increased in group 3 compared with group 2 animals (p<0.05, respectively)
CONCLUSION : These results suggest that antenatal vitamin E treatment increases the production of surfactant proteins in the CDH hypoplastic lung.
(ACTA MEDICA NAGASAKIENSIA 47: 117-121, 2002)

Report

(3 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • Research Products

    (3 results)

All Other

All Publications (3 results)

  • [Publications] S.Yoshimura, et al.: "Prenatal vitamin E treatment improves lung growth in fetal rats with congenital diaphragmatic hernia"ACTA MEDICA NAGASAKIKENSIA. 47. 117-121 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] S. Yoshimura et al.: "Prenatal vitamin E treatment improves lung growth in fetal rats with congenital diaphragmatic hernia"ACTA MEDICA NAGASAKIENSIA. 47. 117-121 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] S.Yoshimura et al.: "Prenatal vitamin E treatment improves lung growth in fetal rats with congenital diaphragmatic hernia"ACTA MEDICA NAGASAKIKENSIA. 47. 117-121 (2002)

    • Related Report
      2002 Annual Research Report

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Published: 2001-04-01   Modified: 2016-04-21  

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