Evidence map›Paper›PMID 25264678›Full record

ArticleInternational journal of environmental research and public health2014

Genomic instability in human lymphocytes from male users of crack cocaine.

Thiago Aley Brites de Freitas, Roberta Passos Palazzo, Fabiana Michelsen de Andrade, César Luis Reichert, Flávio Pechansky, Félix Kessler, Caroline Brunetto de Farias, Gisele Gomes de Andrade, Sandra Leistner-Segal, Sharbel Weidner Maluf

Open access · goldAbstract read
In one paragraph

Article in International journal of environmental research and public health, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
0.7field-weighted citation impact, top 31% 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

9 citing papers in PubMed, 20 citations in OpenAlex.

  1. Article
  2. Crack Cocaine Smoke Induces Tissue Degeneration in Rat Submandibular Glands by Toll-like Signaling Pathway.Pathophysiology : the official journal of the International Society for Pathophysiology · 2025
    Article
  3. Article
  4. Article
  5. Review
  6. Review
  7. Article
  8. Acute crack cocaine exposure induces genetic damage in multiple organs of rats.Environmental science and pollution research international · 2016
    Article
  9. 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

10 authors at 3 institutions in 1 country.

Thiago Aley Brites de FreitasMedical Genetics Service, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS 90035-903, Brazil. thiagobrites@gmail.com.
Roberta Passos PalazzoMedical Genetics Service, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS 90035-903, Brazil. betapalazzo@yahoo.com.br.
Fabiana Michelsen de AndradeHealth Science Institute, Feevale University, RS 239, Novo Hamburgo, RS 93352-000, Brazil. fabiana.michelsen@hotmail.com.
César Luis ReichertHealth Science Institute, Feevale University, RS 239, Novo Hamburgo, RS 93352-000, Brazil. cesar@sinos.net.
Flávio PechanskyCenter for Drug and Alcohol Research, Hospital de Clínicas de Porto Alegre and Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 90035-903, Brazil. flaviopechansky@gmail.com.
Félix KesslerCenter for Drug and Alcohol Research, Hospital de Clínicas de Porto Alegre and Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 90035-903, Brazil. kessler.ez@terra.com.br.
Caroline Brunetto de FariasLaboratório de Pesquisas em Câncer, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS 90035-903, Brazil. carolbfarias@gmail.com.
Gisele Gomes de AndradeMedical Genetics Service, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS 90035-903, Brazil. giseleandrad@gmail.com.
Sandra Leistner-SegalMedical Genetics Service, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS 90035-903, Brazil.
Sharbel Weidner MalufMedical Genetics Service, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS 90035-903, Brazil. 0808swm@gmail.com.
Hospital de Clínicas de Porto Alegre · BRUniversidade Federal do Rio Grande do Sul · BRUniversidade Feevale · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Recent research suggests that crack cocaine use alters systemic biochemical markers, like oxidative damage and inflammation markers, but very few studies have assessed the potential effects of crack cocaine at the cellular level. We assessed genome instability by means of the comet assay and the cytokinesis-block micronucleus technique in crack cocaine users at the time of admission to a rehabilitation clinic and at two times after the beginning of withdrawal. Thirty one active users of crack cocaine and forty control subjects were evaluated. Comparison between controls and crack cocaine users at the first analysis showed significant differences in the rates of DNA damage (p = 0.037). The frequency of micronuclei (MN) (p < 0.001) and nuclear buds (NBUDs) (p < 0.001) was increased, but not the frequency of nucleoplasmic bridges (NPBs) (p = 0.089). DNA damage decreased only after the end of treatment (p < 0.001). Micronuclei frequency did not decrease after treatment, and nuclear buds increased substantially. The results of this study reveal the genotoxic and mutagenic effects of crack cocaine use in human lymphocytes and pave the way for further research on cellular responses and the possible consequences of DNA damage, such as induction of irreversible neurological disease and cancer.

Indexed as

Cocaine-Related DisordersAdolescentAdultBrazilCell NucleusComet AssayCrack CocaineDNA DamageGenomic InstabilityHumansLymphocytesMaleMicronuclei, Chromosome-DefectiveMicronucleus TestsMiddle AgedNuclear EnvelopeCrack Cocaine

Identifiers

PMID25264678
PMCPMC4210963
OpenAlexW2077898316

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.