Clinical chorioamnionitis at term is characterized by changes in the plasma concentration of CHCHD2/MNRR1, a mitochondrial protein

OBJECTIVE: Mitochondrial dysfunction was observed in acute systemic inflammatory conditions such as sepsis and might be involved in sepsis-induced multi-organ failure. Coiled-Coil-Helix-Coiled-Coil-Helix Domain Containing 2 (CHCHD2), also known as Mitochondrial Nuclear Retrograde Regulator 1 (MNRR1), a bi-organellar protein located in the mitochondria and the nucleus, is implicated in cell respiration, survival, and response to tissue hypoxia. Recently, the reduction of the cellular CHCHD2/MNRR1 protein, as part of mitochondrial dysfunction, has been shown to play a role in the amplification of inflammatory cytokines in a murine model of lipopolysaccharide-induced systemic inflammation. The aim of this study was to determine whether the plasma concentration of CHCHD2/MNRR1 changed during human normal pregnancy, spontaneous labor at term, and clinical chorioamnionitis at term.

METHODS: We conducted a cross-sectional study that included the following groups: 1) non-pregnant women (n = 17); 2) normal pregnant women at various gestational ages from the first trimester until term (n = 110); 3) women at term with spontaneous labor (n = 50); and 4) women with clinical chorioamnionitis at term in labor (n = 25). Plasma concentrations of CHCHD2/MNRR1 were assessed by an enzyme-linked immunosorbent assay.

RESULTS: 1) Pregnant women at term in labor with clinical chorioamnionitis had a significantly higher plasma CHCHD2/MNRR1 concentration than those in labor without chorioamnionitis (p = .003); 2) CHCHD2/MNRR1 is present in the plasma of healthy non-pregnant and normal pregnant women without significant differences in its plasma concentrations between the two groups; 3) there was no correlation between maternal plasma CHCHD2/MNRR1 concentration and gestational age at venipuncture; and 4) plasma CHCHD2/MNRR1 concentration was not significantly different in women at term in spontaneous labor compared to those not in labor.

CONCLUSIONS: CHCHD2/MNRR1 is physiologically present in the plasma of healthy non-pregnant and normal pregnant women, and its concentration does not change with gestational age and parturition at term. However, plasma CHCHD2/MNRR1 is elevated in women at term with clinical chorioamnionitis. CHCHD2/MNRR1, a novel bi-organellar protein located in the mitochondria and the nucleus, is released into maternal plasma during systemic inflammation.

Medienart:

E-Artikel

Erscheinungsjahr:

2023

Erschienen:

2023

Enthalten in:

Zur Gesamtaufnahme - volume:36

Enthalten in:

The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians - 36(2023), 2 vom: 22. Dez., Seite 2222333

Sprache:

Englisch

Beteiligte Personen:

Bosco, Mariachiara [VerfasserIn]
Romero, Roberto [VerfasserIn]
Gallo, Dahiana M [VerfasserIn]
Suksai, Manaphat [VerfasserIn]
Gotsch, Francesca [VerfasserIn]
Jung, Eunjung [VerfasserIn]
Chaemsaithong, Piya [VerfasserIn]
Tarca, Adi L [VerfasserIn]
Gomez-Lopez, Nardhy [VerfasserIn]
Arenas-Hernandez, Marcia [VerfasserIn]
Meyyazhagan, Arun [VerfasserIn]
Al Qasem, Malek [VerfasserIn]
Franchi, Massimo P [VerfasserIn]
Grossman, Lawrence I [VerfasserIn]
Aras, Siddhesh [VerfasserIn]
Chaiworapongsa, Tinnakorn [VerfasserIn]

Links:

Volltext

Themen:

Bi-organelle protein
CHCHD2 protein, human
DNA-Binding Proteins
Infection
Intravascular inflammation
Journal Article
Labor
Mitochondrial Proteins
Mitochondrial dysfunction
Pregnancy
Transcription Factors

Anmerkungen:

Date Completed 26.06.2023

Date Revised 24.08.2023

published: Print

Citation Status MEDLINE

doi:

10.1080/14767058.2023.2222333

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM358505178