Evidence map›Paper›PMID 34155539›Full record

ArticleWorld journal of surgery2021

Matrix Metalloproteinases (MMP-2) and Tissue Inhibitors of Metalloproteinases (TIMP-2) in Male Inguinal Hernia Patients at Different Ages.

Dianchen Wang, Hongyue Zhang, Jianhua Li, Xinguang Qiu, Yake Chen

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In one paragraph

Article in World journal of surgery, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
0.7field-weighted citation impact, top 28% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

5 citing papers in PubMed, 6 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 1 country.

Dianchen WangDepartment of Hernia and Abdominal Wall Surgery, The First Affiliated Hospital of Zhengzhou University, No.1 Jianshe Road, Zhengzhou, 450052, Henan, China.
Hongyue ZhangDepartment of General Surgery, The First People's Hospital of Jiande City, No.599 Yanzhou Road, Jiande, 311600, Zhejiang, China.
Jianhua LiDepartment of Thyroid Surgery, The First Affiliated Hospital of Zhengzhou University, No.1 Jianshe Road, Zhengzhou, 450052, Henan, China.
Xinguang QiuDepartment of Thyroid Surgery, The First Affiliated Hospital of Zhengzhou University, No.1 Jianshe Road, Zhengzhou, 450052, Henan, China. qxg450052@163.com.
Yake ChenDepartment of Hernia and Abdominal Wall Surgery, The First Affiliated Hospital of Zhengzhou University, No.1 Jianshe Road, Zhengzhou, 450052, Henan, China.
First Affiliated Hospital of Zhengzhou University · CNThe First People's Hospital of Changde · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCollagen metabolism, controlled by matrix metalloproteinases (MMPs) and tissue inhibitors of metalloproteinases (TIMPs), might be related to inguinal hernia formation. It was reported that the incidence of inguinal hernia and the recurrence rate after inguinal hernia repair were higher in the elderly. The objective of the research was to assess the amounts of MMP-2 and TIMP-2 in patients at different ages in order to examine the relationship between age and inguinal hernia occurrence.

methodsThe research included 40 primary inguinal hernia male patients, and four groups were created: 50-59 years old (A group); 60-69 years old (B group); 70-79 years old (C group); 80-89 years old (D group). We got the samples from anterior rectus sheath fascia. Real-time fluorescence quantitative polymerase chain reaction (RT-PCR) and immunohistochemistry were applied to estimate the levels of MMP-2 and TIMP-2.

resultsThe MMP-2 amounts in C and D group were statistically higher than control group (P < 0.05), and the TIMP-2 levels in C and D group were statistically lower than control group (P < 0.05). We found a positive correlation between age and expression levels of MMP-2 (r = 0.537, P < 0.001; r = 0.569, P < 0.001) and a negative correlation between age and TIMP-2 in inguinal hernia patients (r = - 0.759, P < 0.001; r = - 0.759, P < 0.001).

conclusionsIncreased MMP-2 and reduced TIMP-2 may have some relationships with higher inguinal hernia incidence of the elderly.

Indexed as

Hernia, InguinalMatrix Metalloproteinase 2Tissue Inhibitor of Metalloproteinase-2AgedAged, 80 and overHumansMaleMiddle AgedMatrix Metalloproteinase 2MMP2 protein, humanTIMP2 protein, humanTissue Inhibitor of Metalloproteinase-2

Identifiers

PMID34155539
OpenAlexW3174416431

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.