Evidence map›Paper›PMID 33978061›Full record

ArticleActa cirurgica brasileira2021

Effects of the lower energy and pulse stacking in carbon dioxide laser skin treatment: an objective analysis using second harmonic generation.

Marcos Matias Motta, Rafael Fantelli Stelini, Davi Reis Calderoni, Rovilson Gilioli, Gislaine Vieira Damiani, Carlos Lenz César, Paulo Kharmandayan

Open access · goldAbstract 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 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
0.8field-weighted citation impact, top 25% 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

1 citing paper in PubMed, 5 citations in OpenAlex.

  1. Clinical efficacy of the fractional ablative COLasers in medical science · 2025
    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

7 authors at 2 institutions in 1 country.

Marcos Matias MottaFellow PhD Degree. Universidade Estadual de Campinas - Faculty of Medical Sciences - Department of Surgery - Campinas (SP), Brazil.ORCID http://orcid.org/0000-0002-2418-9691
Rafael Fantelli SteliniMD. Universidade Estadual de Campinas - Faculty of Medical Sciences - Department of Anatomic Pathology - Campinas (SP), Brazil.ORCID http://orcid.org/0000-0003-0618-1693
Davi Reis CalderoniPhD. Universidade Estadual de Campinas - Faculty of Medical Sciences - Department of Surgery - Campinas (SP), Brazil.ORCID http://orcid.org/0000-0002-4670-6936
Rovilson GilioliPhD, Head. Universidade Estadual de Campinas - Faculty of Medical Sciences - Multidisciplinary Center for Biological Investigation on Laboratory Animals Science - Campinas (SP), Brazil.ORCID http://orcid.org/0000-0002-7767-691X
Gislaine Vieira DamianiPhD. Instituto Federal de Educação, Ciência e Tecnologia de São Paulo - Biophotonics Laboratory - Capivari (SP), Brazil.ORCID http://orcid.org/0000-0001-8036-6616
Carlos Lenz CésarPhD. Universidade Estadual de Campinas - National Institute of Photonics Applied to Cell Biology - Biophotonics Laboratory - Campinas (SP), Brazil.ORCID http://orcid.org/0000-0001-5573-9636
Paulo KharmandayanAssociate Professor, Head. Universidade Estadual de Campinas - Faculty of Medical Sciences - Department of Surgery - Campinas (SP), Brazil.ORCID http://orcid.org/0000-0002-2645-3521
Universidade Estadual de Campinas (UNICAMP) · BRFederal Institute of São Paulo · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo evaluate the effect of fractional carbon dioxide (CO2) laser treatment using lower power associated with pulse stacking within collagen fibers, using second harmonic generation microscopy and computerized image analysis.

methodsTwenty male Wistar rats aging eight weeks were used. Each treatment area received a single-pass CO2 fractional laser with different parameters. The 20 animals were divided into two groups and euthanized after 30 and 60 days. Second harmonic generation images were obtained and program ImageJ was utilized to evaluate the collagen organization within all areas. Collagen anisotropy, entropy and optical density were quantified.

resultsIncreased anisotropy over time was observed in all four areas, but only reached statistical significance (p = 0.0305) when the mildest parameters were used (area four). Entropy decreased over time in all areas, but without significance(p = 0.1779) in area four. Density showed an overtime increase only in area four, but no statistical significance was reached (p = 0.6534).

conclusionsWhen combined, the results obtained in this study regarding anisotropy, entropy and density tend to demonstrate that it is possible to achieve collagen remodeling with the use of lower power levels associated with stacked pulses.

Indexed as

Lasers, GasSecond Harmonic Generation MicroscopySkin AgingAnimalsCarbon DioxideMaleRatsRats, WistarSkinCarbon Dioxide

Identifiers

PMID33978061
PMCPMC8112111
OpenAlexW3163832184

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.