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Eur J Pediatr Surg 2023; 33(05): 386-394
DOI: 10.1055/s-0042-1758157
Original Article

Protective Effect of the SIRT1-Mediated NF-κB Signaling Pathway against Necrotizing Enterocolitis in Neonatal Mice

Rui-Bo Zhang
1   Department of Pediatrics, Taihe Hospital, Hubei University of Medicine, Shiyan, People's Republic of China
,
Lan Ren
1   Department of Pediatrics, Taihe Hospital, Hubei University of Medicine, Shiyan, People's Republic of China
,
De-Ping Ding
2   Department of Infectious Diseases, Taihe Hospital, Hubei University of Medicine, Shiyan, People's Republic of China
,
Heng-Dong Wang
1   Department of Pediatrics, Taihe Hospital, Hubei University of Medicine, Shiyan, People's Republic of China
,
Juan Peng
3   Department of Blood Transfusion, Taihe Hospital, Hubei University of Medicine, Shiyan, People's Republic of China
,
Kun Zheng 
1   Department of Pediatrics, Taihe Hospital, Hubei University of Medicine, Shiyan, People's Republic of China
› Author Affiliations Funding None.
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Abstract

Objective To discover the mechanism of the sirtuin 1 (SIRT1)-mediated nuclear factor-κB (NF-κB) pathway in the protection against necrotizing enterocolitis (NEC) in neonatal mice.

Materials and Methods Neonatal mice were treated with EX527 (an inhibitor of SIRT1) and/or pyrrolidine dithiocarbamate (PDTC, an inhibitor of NF-κB). The survival rate of the mice was recorded. Hematoxylin and eosin (HE) staining was performed to observe the pathological changes in the intestines. Furthermore, western blotting, enzyme-linked immunosorbent assay, and real-time quantitative polymerase chain reaction were conducted to measure the protein and gene expression, while corresponding kits were used to detect the levels of oxidative stress indicators.

Results PDTC increased the survival rate of NEC mice. When compared with the NEC+ EX527 + PDTC group, the histological NEC score was higher in the NEC + EX527 group but lower in the NEC + PDTC group. SIRT1 expression in the intestines of NEC mice was downregulated, with an increase in p65 nuclear translocation. Additionally, malondialdehyde increased and glutathione peroxidase decreased in the intestines of NEC mice, with the upregulation of interleukin (IL)-6, IL-1β, and tumor necrosis factor-α, as well as the downregulation of ZO-1, occludin, and claudin-4 in the intestines. However, the above changes could be improved by PDTC, which could be further reversed by EX527.

Conclusion SIRT1 can mitigate inflammation and the oxidative stress response and improve intestinal permeability by mediating the NF-κB pathway, playing an important role in the alleviation of NEC.

Keywords

neonatal NEC - SIRT1 - NF-κB - inflammation - oxidative stress

Availability of Data and Materials

The data that support the findings of this study are available on request form the corresponding author. The data are not publicly available due to privacy.




Publication History

Received: 20 June 2022

Accepted: 06 September 2022

Article published online:
15 November 2022

© 2022. Thieme. All rights reserved.

Georg Thieme Verlag KG
Rüdigerstraße 14, 70469 Stuttgart, Germany

 

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