Evidence map›Paper›PMID 34133505›Full record

ArticleActa cirurgica brasileira2021

Histological evaluation of capsules formed by texturized silicone implants with and without polyester mesh coverage (Parietex®). A study on female rats.

Ralf Berger, Jurandir Marcondes Ribas Filho, Osvaldo Malafaia, Paulo Afonso Nunes Nassif, Eduardo Nascimento Silva, Alfredo Benjamin Duarte da Silva, Milka Takejima, Marcelo Augusto de Souza, Pedro Henrique de Paula, Mário Rodrigues Montemor Netto and 1 more

Abstract read
In one paragraph

Article in Acta cirurgica brasileira, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

2 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
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

11 authors.

Ralf BergerFellow Master degree. Postgraduate Program in Principles of Surgery - Mackenzie Evangelical School of Medicine - Curitiba (PR), Brazil.ORCID http://orcid.org/0000-0002-3193-2236
Jurandir Marcondes Ribas FilhoPhD, Associate Professor. Postgraduate Program in Principles of Surgery - Mackenzie Evangelical School of Medicine - Curitiba (PR), Brazil.ORCID http://orcid.org/0000-0002-5251-7672
Osvaldo MalafaiaPhD, Full Professor. Postgraduate Program in Principles of Surgery - Mackenzie Evangelical School of Medicine - Curitiba (PR), Brazil.ORCID http://orcid.org/0000-0002-1829-7071
Paulo Afonso Nunes NassifPhD, Associate Professor. Postgraduate Program in Principles of Surgery - Mackenzie Evangelical School of Medicine - Curitiba (PR), Brazil.ORCID http://orcid.org/0000-0002-1752-5837
Eduardo Nascimento SilvaPhD. General Surgery - Universidade Estadual de Ponta Grossa - Ponta Grossa (PR), Brazil.ORCID http://orcid.org/0000-0003-4166-6661
Alfredo Benjamin Duarte da SilvaMD. Plastic Surgery Department - Hospital Erasto Gaertner - Curitiba (PR), Brazil.ORCID http://orcid.org/0000-0001-5334-6898
Milka TakejimaMD. Postgraduate Program in Plastic Surgery - Hospital Universitário Evangélico Mackenzie, and Instituto de Pesquisa Médica - Curitiba (PR), Brazil.ORCID http://orcid.org/0000-0002-0266-4076
Marcelo Augusto de SouzaGraduate Student. Universidade Estadual de Ponta Grossa - Ponta Grossa (PR), Brazil.ORCID http://orcid.org/0000-0002-9909-0258
Pedro Henrique de PaulaGraduate Student. Universidade Estadual de Ponta Grossa - Ponta Grossa (PR), Brazil.ORCID http://orcid.org/0000-0002-9029-6364
Mário Rodrigues Montemor NettoMSc. Clinical Surgery - Universidade Federal do Paraná - Curitiba (PR). Assistant Professor. Anatomical Pathology - Universidade Estadual de Ponta Grossa - Ponta Grossa (PR). Head. Department of Anatomical Pathology - Santa Casa de Misericórdia - Ponta Grossa (PR), Brazil.ORCID http://orcid.org/0000-0002-6617-2951
Lucia de NoronhaPhD. School of Medicine - Pontifícia Universidade Católica do Paraná - Curitiba (PR), Brazil.ORCID http://orcid.org/0000-0003-0310-7164

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo evaluate capsules formed by microtextured silicone implants with and without Parietex® mesh coverage histologically.

methodsSixty Wistar rats were divided in two groups (meshed and unmeshed). Each group was, then, divided into two subgroups for evaluation at 30 and 90 days. Capsules were analyzed based on hematoxylin and eosin (HE) and picrosirius staining.

resultsThe number of fibroblasts, neutrophils and macrophages was similar among all subgroups. There was a higher lymphocyte reaction in the 30-day meshed group (p = 0.003). Giant cell reaction, granulation tissue and neoangiogenesis were similar among the subgroups. Synovial metaplasia was milder at 90-day in the unmeshed (p = 0.002) and meshed group (p < 0.001). Capsular thickness was significantly greater in the meshed samples (30-day p < 0.001 and 90-day p < 0.001). There was a similar amount of collagen types I and III in both groups.

conclusionsThe mesh-covered implants produced capsules similar to the microtextured ones when analyzing inflammatory variables. Synovial metaplasia was milder at 90 than at 30 days, and the capsular thickness was significantly greater in the meshed group. A similar amount of collagen types I and III was observed. Due to these characteristics, the mesh coverage did not seem to significantly affect the local inflammatory activity.

Indexed as

Breast ImplantsSiliconesAnimalsCapsulesCollagenFemalePolyestersRatsRats, WistarSurgical MeshCapsulesCollagenparietexPolyestersSilicones

Identifiers

PMID34133505
PMCPMC8205442

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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.