Intestinal tract and parenteral multi-organ sequential pathological injury caused by necrotizing enterocolitis.

Abstract:

BACKGROUND:To explore the relationship between the pathological changes of the colon, terminal ileum, lung, liver and kidney, and the changes of Bax, PCNA and PAF in a rat model of NEC. METHODS:One hundred and forty neonatal SD rats were randomly divided into NEC group and control group (70 in each group). NEC group was given hypoxia, cold stimulation and artificial feeding twice a day for 3 consecutive days. The control group was only fed normally. After modeling, From the 1st day to the 7th day, 10 rats were sampled in each group for pathological examination of colon, terminal ileum, lung, liver and kidney tissue. The levels of Bax, PCNA and PAF were investigated by immunohistochemistry. RESULTS:Compared with the normal group, in the NEC group, on the 1st day, the colon, terminal ileum, lung, liver and kidney showed inflammatory damage. On the 5th day, the inflammatory injury was reduced. The inflammation disappeared on the 7th day. There were differences in the time of apoptosis in the intestine. In the intestine, the proliferation of PCNA was weak at first and then strong. Bax in liver and kidney showed marked apoptosis and apoptosis time increased in the lung. The expression of PCNA increased in lung, liver and kidney, and the expression of PAF increased in lung and liver. CONCLUSIONS:NEC can lead to secondary injury of different degrees in colon, terminal ileum, lung, liver and kidney, and the degree and time of injury and repair were different. In general, organ repair played a leading role on the 4th day after modeling.

journal_name

BMC Pediatr

journal_title

BMC pediatrics

authors

Wang FS,Yu ML,Li WZ,Hong K,Xu CB,Wang GH

doi

10.1186/s12887-020-02304-5

subject

Has Abstract

pub_date

2020-09-02 00:00:00

pages

418

issue

1

issn

1471-2431

pii

10.1186/s12887-020-02304-5

journal_volume

20

pub_type

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