Assessment of Endogenous Nitric Oxide Formation in Newborns: Measurement of Urinary Nitrite and Nitrate Concentrations

Hirokazu Tsukahara; Motohiro Takeuchi; Ikue Hata; Masahiro Hiraoka; Fumikazu Kotsuji; Masakatsu Sudo; Mitsufumi Mayumi

doi:10.1159/000244499

Assessment of Endogenous Nitric Oxide Formation in Newborns: Measurement of Urinary Nitrite and Nitrate Concentrations

Hirokazu Tsukahara, Motohiro Takeuchi, Ikue Hata, Masahiro Hiraoka, Fumikazu Kotsuji, Masakatsu Sudo, Mitsufumi Mayumi

Research output: Contribution to journal › Article

11 Citations (Scopus)

Abstract

We measured the urinary nitrite and nitrate (NO_x^–) excretion, an index of endogenous nitric oxide formation, in term and preterm newborns on the 1st and 4th days of age. In the infants of both groups, the urinary NO_x^– excretion significantly increased from the 1st to the 4th day. The urinary NO_x^– excretion in preterm infants was significantly higher as compared with term babies on both days. Furthermore, the urinary NO_x^– excretion was significantly elevated in preterm infants with respiratory distress syndrome as compared with those without cardiopulmonary complications on the 4th day. These changes of urinary NO_x^–; excretion in newborns strongly suggest the presence of an active physiological role for nitric oxide in the circulatory adaptation to extrauterine life.

Original language	English
Pages (from-to)	322-326
Number of pages	5
Journal	Neonatology
Volume	72
Issue number	5
DOIs	https://doi.org/10.1159/000244499
Publication status	Published - Jan 1 1997
Externally published	Yes

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Keywords

Newborns
Nitric oxide
Respiratory distress syndrome
Urinary nitrate
Urinary nitrite

ASJC Scopus subject areas

Pediatrics, Perinatology, and Child Health
Developmental Biology

Cite this

Tsukahara, H., Takeuchi, M., Hata, I., Hiraoka, M., Kotsuji, F., Sudo, M., & Mayumi, M. (1997). Assessment of Endogenous Nitric Oxide Formation in Newborns: Measurement of Urinary Nitrite and Nitrate Concentrations. Neonatology, 72(5), 322-326. https://doi.org/10.1159/000244499

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10.1159/000244499