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Assessment of oxidative damage and enzymatic antioxidant system activity on the umbilical cord blood and saliva from preterm newborns with risk factors for early-onset neonatal sepsis
Coutinho, Fábio Gonçalves; Diniz, Edna Maria de Albuquerque; Kandler, Ingrid; Cianciarullo, Marco Antônio; Santos, Natália Rodrigues dos.
  • Coutinho, Fábio Gonçalves; Children's Institute. FMUSP. Dept. of Pediatrics. São Paulo. BR
  • Diniz, Edna Maria de Albuquerque; Children's Institute. FMUSP. Dept. of Pediatrics. São Paulo. BR
  • Kandler, Ingrid; Federal University of Espírito Santo. Dept of Pediatrics. Espírito Santo. BR
  • Cianciarullo, Marco Antônio; Municipal Hospital of Barueri. Chief of Dept. of Neonatology. BR
  • Santos, Natália Rodrigues dos; Municipal Hospital of Barueri. Dept. Of Neonatology. BR
Rev. Assoc. Med. Bras. (1992) ; 64(10): 888-895, Oct. 2018. tab, graf
Article in English | LILACS | ID: biblio-976782
ABSTRACT
SUMMARY

BACKGROUND:

To determine the concentration of the Lipid Peroxidation Marker Malondialdehyde (MDA), and Antioxidant Markers Superoxide Dismutase (SOD), Glutathione Peroxidase (GPX), Catalase (CAL) in umbilical cord blood and in unstimulated saliva in the first 24 and 48 hours of life in the PTNB of mothers with and without risk factors for early-onset neonatal sepsis.

METHODS:

Cross-sectional study with the signing of informed consent by the pregnant women and application of a standard questionnaire classifying the PTNB in Group 1 or 2.

RESULTS:

Twenty-one PTNB were studied. Regarding gender, birth weight, need for oxygen, use of phototherapy, diagnosis of assumed sepsis, presence of fetal distress, number of pregnancies, type of delivery, use of corticosteroids, premature rupture of membranes, maternal fever, chorioamnionitis, APGAR at the 5th and 10th minute of life. Statistical analysis was performed with the Mann-Whitney test (p = 0.019) on the GPX variable of umbilical cord blood in the group of mothers with risk factors for early-onset neonatal sepsis. There was no statistical difference in the MDA, SOD, and CAT variables of the group with risk factors and in any variable of the group without risk factors.

CONCLUSION:

There was an increase of the GPX concentration in the blood from the umbilical vein in the group with risk factors for early-onset neonatal sepsis. There was no statistical significance in the comparison of saliva and umbilical cord blood. There was no statistically significant difference in MDA, SOD, CAT.
RESUMO
RESUMO

OBJETIVOS:

Determinar a concentração do marcador de peroxidação lipídica Malondialdeído (MDA) e dos marcadores antioxidantes Superóxido Dismutase (SOD), Glutationa Peroxidase (GPX), Catalase (CAL) no sangue do cordão umbilical e na saliva não estimulada nas primeiras 24 e 48 horas de vida nos RNPT de mães com e sem fatores de risco para sepse neonatal precoce.

METODOLOGIA:

Estudo transversal com a assinatura do termo de consentimento livre esclarecido pela gestante e aplicação de um questionário padrão classificando o RNPT no Grupo 1 ou 2.

RESULTADOS:

Foram estudados 21 RNPT. Quanto ao gênero, peso ao nascimento, necessidade de oxigênio, uso de fototerapia, diagnóstico de sepse presumida, presença de sofrimento fetal, número de gestações, tipo de parto, uso de corticoide, rotura prematura de membranas, a presença de febre materna, a presença de corioamnionite, Apgar no 50 e 100 minuto de vida, a análise estatística foi feita com o teste de Mann-Whitney (p=0,019) na váriável GPX do sangue do cordão umbilical no grupo das mães com fatores de risco para sepse neonatal precoce. Não houve diferença estatística nas outras variáveis MDA, SOD, CAT do grupo com fatores de risco e em nenhuma variável do grupo sem fatores de risco.

CONCLUSÃO:

O aumento de duas vezes a concentração da GPX no sangue da veia umbilical dos RNPT do grupo das mães com fatores de risco para sepse neonatal precoce. Sem significância estatística na comparação entre a saliva e o sangue do cordão umbilical. Não houve diferença estatisticamente significante nas variáveis MDA, SOD e CAT.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Biomarkers / Fetal Blood / Neonatal Sepsis Type of study: Etiology study / Observational study / Prevalence study / Risk factors Limits: Female / Humans / Male / Infant, Newborn / Pregnancy Language: English Journal: Rev. Assoc. Med. Bras. (1992) Year: 2018 Type: Article Affiliation country: Brazil Institution/Affiliation country: Children's Institute/BR / Federal University of Espírito Santo/BR / Municipal Hospital of Barueri/BR

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Full text: Available Index: LILACS (Americas) Main subject: Biomarkers / Fetal Blood / Neonatal Sepsis Type of study: Etiology study / Observational study / Prevalence study / Risk factors Limits: Female / Humans / Male / Infant, Newborn / Pregnancy Language: English Journal: Rev. Assoc. Med. Bras. (1992) Year: 2018 Type: Article Affiliation country: Brazil Institution/Affiliation country: Children's Institute/BR / Federal University of Espírito Santo/BR / Municipal Hospital of Barueri/BR