start-ver=1.4
cd-journal=joma
no-vol=65
cd-vols=
no-issue=3
article-no=
start-page=276
end-page=281
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2024
dt-pub=202405
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Postnatal longitudinal analysis of serum nitric oxide and eosinophil counts in extremely preterm infants
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Background: Nitric oxide (NO) may be related to the pathogenesis of several morbidities in extremely preterm infants, including late-onset adrenal insufficiency. However, eosinophilia is observed under pathological conditions with adrenal insufficiency. Therefore, this study explored postnatal changes in NO levels and eosinophil counts in extremely preterm infants with and without morbidities.
Methods: Nineteen extremely preterm infants with a median gestational age of 27.0 weeks and median birth weight of 888 g were enrolled in this study. Serum levels of nitrogen oxides (NOx) and peripheral blood eosinophil counts were measured at birth and every 2 weeks thereafter. Morbidities of the study group were diagnosed using a single criterion.
Results: Serum NOx levels (mean ± standard deviation) were 22.5 ± 14.9 μmol/L, 51.2 ± 23.7 μmol/L, 42.4 ± 15.2 μmol/L, and 33.8 ± 9.4 μmol/L at birth and 2, 4, and 6 weeks of age, respectively. The serum NOx level at 2 weeks of age was significantly higher than that at birth and 6 weeks of age. Eosinophil counts, which increase with adrenal insufficiency, were measured simultaneously and were 145 ± 199/μL, 613 ± 625/μL, 466 ± 375/μL, and 292 ± 228/μL at birth and 2, 4, and 6 weeks of age, respectively. These values showed that the eosinophil count was significantly higher at 2 weeks of age than at birth and 6 weeks of age. The serum NOx level of infants without chorioamnionitis was significantly increased at 4 weeks of age, and the eosinophil count of infants with necrotizing enterocolitis was significantly increased at 2 weeks of age. No correlation with the NOx level or eosinophil count was observed in infants with late-onset circulatory collapse.
Conclusion: The postnatal serum NOx level and eosinophil count were significantly correlated with each other and peaked at 2 weeks of age.
en-copyright=
kn-copyright=
en-aut-name=WatanabeHirokazu
en-aut-sei=Watanabe
en-aut-mei=Hirokazu
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=
en-aut-name=WashioYosuke
en-aut-sei=Washio
en-aut-mei=Yosuke
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=
en-aut-name=TamaiKei
en-aut-sei=Tamai
en-aut-mei=Kei
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=
en-aut-name=MorimotoDaisaku
en-aut-sei=Morimoto
en-aut-mei=Daisaku
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=
en-aut-name=OkamuraTomoka
en-aut-sei=Okamura
en-aut-mei=Tomoka
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=
en-aut-name=YoshimotoJunko
en-aut-sei=Yoshimoto
en-aut-mei=Junko
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=
en-aut-name=NakanishiHidehiko
en-aut-sei=Nakanishi
en-aut-mei=Hidehiko
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=7
ORCID=
en-aut-name=KageyamaMisao
en-aut-sei=Kageyama
en-aut-mei=Misao
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=8
ORCID=
en-aut-name=UchiyamaAtsushi
en-aut-sei=Uchiyama
en-aut-mei=Atsushi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=9
ORCID=
en-aut-name=TsukaharaHirokazu
en-aut-sei=Tsukahara
en-aut-mei=Hirokazu
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=10
ORCID=
en-aut-name=KusudaSatoshi
en-aut-sei=Kusuda
en-aut-mei=Satoshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=11
ORCID=
affil-num=1
en-affil=Department of Pediatrics, Graduate School of Medicine, Dentistry and Pharmaceutical Science, Okayama University
kn-affil=
affil-num=2
en-affil=Department of Pediatrics, Graduate School of Medicine, Dentistry and Pharmaceutical Science, Okayama University
kn-affil=
affil-num=3
en-affil=Department of Neonatology, Okayama Medical Center, National Hospital Organization
kn-affil=
affil-num=4
en-affil=Department of Pediatrics, Graduate School of Medicine, Dentistry and Pharmaceutical Science, Okayama University
kn-affil=
affil-num=5
en-affil=Department of Pediatrics, Graduate School of Medicine, Dentistry and Pharmaceutical Science, Okayama University
kn-affil=
affil-num=6
en-affil=Department of Pediatrics, Graduate School of Medicine, Dentistry and Pharmaceutical Science, Okayama University
kn-affil=
affil-num=7
en-affil=Department of Neonatology, Maternal and Perinatal Center, Tokyo Women’s Medical University
kn-affil=
affil-num=8
en-affil=Department of Neonatology, Okayama Medical Center, National Hospital Organization
kn-affil=
affil-num=9
en-affil=Department of Neonatology, Maternal and Perinatal Center, Tokyo Women’s Medical University
kn-affil=
affil-num=10
en-affil=Department of Pediatrics, Graduate School of Medicine, Dentistry and Pharmaceutical Science, Okayama University
kn-affil=
affil-num=11
en-affil=Department of Neonatology, Maternal and Perinatal Center, Tokyo Women’s Medical University
kn-affil=
en-keyword=eosinophils
kn-keyword=eosinophils
en-keyword=extremely preterm infant
kn-keyword=extremely preterm infant
en-keyword=nitric oxide
kn-keyword=nitric oxide
en-keyword=relative adrenal insufficiency
kn-keyword=relative adrenal insufficiency
END