Effect of age and gender on the progression of adult vascular dysfunction in a mouse model of fetal programming lacking endothelial nitric oxide synthase

Giuseppe Chiossi, Maged Costantine, Esther Tamayo, Phyllis Orise, Gary Hankins, George Saade, Monica Longo

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The objective of this study was to investigate vascular function at different ages in a transgenic murine model of fetal vascular programming using a model of uteroplacental insufficiency induced by lack of endothelial nitric oxide synthase. Homozygous NOS3 knockout (KO) and wild-type (WT) mice were cross bred to produce WT, KO, and heterozygous that developed in WT (KOP) or KO (KOM) mothers. Male/female offspring from the four groups were killed at 7, 14, and 21 wk of age (n = 5-10/group), and carotid arteries were used for in vitro vascular studies. Responses to phenylephrine (PE), with/without NG-nitro-L-arginine methyl ester (L-NAME), angiotensin (ANG), acetylcholine (ACh), sodium nitroprusside, and isoproterenol (ISO) were studied. At 7 wk, only KO offspring showed higher contractile response to PE, whereas, at 14 and 21 wk, both KO and KOM had a higher response. Incubation with L-NAME abolished these differences. ANG contraction was higher in male KO in all age groups and in 21-wk-old females. Relaxation to ACh and ISO was absent in KO, and significantly decreased in KOM offspring in all age groups compared with KOP and WT, independent of gender. Sodium nitroprusside was not different between groups. The effect of the altered intrauterine environment on the development of abnormal vascular function was limited at 7 wk of age and most evident at 14 wk; further deterioration was limited to ANG-mediated vascular contractility in KO offspring. Our findings provide some hope that at least the first seven postnatal weeks may be an appropriate therapeutic window to prevent cardiovascular disease later in life.

Original languageEnglish (US)
JournalAmerican Journal of Physiology - Heart and Circulatory Physiology
Volume301
Issue number2
DOIs
StatePublished - Aug 2011

Fingerprint

Nitric Oxide Synthase Type III
Fetal Development
Blood Vessels
NG-Nitroarginine Methyl Ester
Angiotensins
Nitroprusside
Phenylephrine
Isoproterenol
Acetylcholine
Hope
Age Groups
Carotid Arteries
Knockout Mice
Cardiovascular Diseases
Mothers

Keywords

  • Age process
  • Cardiovascular development
  • Fetal programming
  • Kidney development
  • Vascular structure

ASJC Scopus subject areas

  • Physiology
  • Physiology (medical)
  • Cardiology and Cardiovascular Medicine

Cite this

Effect of age and gender on the progression of adult vascular dysfunction in a mouse model of fetal programming lacking endothelial nitric oxide synthase. / Chiossi, Giuseppe; Costantine, Maged; Tamayo, Esther; Orise, Phyllis; Hankins, Gary; Saade, George; Longo, Monica.

In: American Journal of Physiology - Heart and Circulatory Physiology, Vol. 301, No. 2, 08.2011.

Research output: Contribution to journalArticle

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