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The correlation between micronuclei count and smoking behavior: a hospital-based study / Correlación entre recuento de micronúcleos y hábito tabáquico: un estudio hospitalario
Balraj, Lakshmi; Nagaraj, Tejavathi; UnniKrishnan, K.
  • Balraj, Lakshmi; Sri Rajiv Gandhi College of Dental Sciences and Hospital. Bengaluru. IN
  • Nagaraj, Tejavathi; Sri Rajiv Gandhi College of Dental Sciences and Hospital. Department of Oral Medicine and Radiology. Bengaluru. IN
  • UnniKrishnan, K; Manipal Academy of Higher Education. Manipal. IN
J. oral res. (Impresa) ; 9(2): 104-110, abr. 30, 2020. ilus, graf, tab
Article in English | LILACS | ID: biblio-1151903
ABSTRACT

Background:

Micronucleus is a microscopically visible cyto-plasmic chromatin mass in the extranuclear vicinity, originating from aberrant mitosis, which consists of eccentric chromosomes that have failed to reach spindle poles during mitosis. The present study was designed to evaluate and compare cytogenetic changes in the buccal mucosa of smokers and non-smokers based on the occurrence of micronuclei. The study aimed to determine the correlation between the micronuclei count and the frequency and duration of smoking habit. Materials and

Methods:

Two groups (smokers and non-smokers) of 34 individuals each were examined. Cytological buccal smears were taken from participants using a moistened wooden spatula and stained with standard Papanicolaou stain. Presence of micronuclei was assessed at 40X magnification using a light microscope and a count per 500 cells was determined. The results of the study were analyzed statistically using Mann-Whitney U test, Spearman's rank correlation coefficient and Student t-test.

Result:

Smears from smokers showed a significant increase in the total number of micronuclei per 500 cell count compared to non-smokers. There was a strong positive correlation between the occurrence of micronuclei and the frequency and duration of smoking. A age-related increase in older age groups was also observed.

Conclusion:

The study reveals a strong positive correlation between the occurrence of micronuclei and the frequency and duration of smoking. This observation is vital in the utilization of the micronuclei detection in smears as a prognostic, educational and interventional tool in the management of patients with smoking habits.
RESUMEN
Antecedentes El micronúcleo es una masa de cromatina citoplasmática microscópicamente visible en el área extranuclear, que se origina a partir de la mitosis aberrante, y que consiste en cromosomas excéntricos que no han podido alcanzar los polos del huso durante la mitosis. El presente estudio fue diseñado para evaluar y comparar los cambios citogenéticos en la mucosa bucal de fumadores y no fumadores en función de la aparición de micronúcleos. El estudio tuvo como objetivo determinar la correlación entre el recuento de micronúcleos y la frecuencia y duración del hábito de fumar. Materiales and

Métodos:

Se examinaron dos grupos (fumadores y no fumadores) de 34 individuos cada uno. Se tomaron frotis bucales citológicos de todos los participantes con una espátula de madera humedecida y se tiñeron con la tinción estándar de Papanicolaou. La presencia de micronúcleos se evaluó al microscopio óptico con un aumento de 40X y se determinó un recuento por 500 células. Los resultados del estudio se analizaron estadísticamente utilizando la prueba U de Mann-Whitney, el coeficiente de correlación de rango de Spearman y la prueba t de Student.

Resultados:

Los frotis de fumadores mostraron un aumento significativo en el número total de micronúcleos por 500 células en comparación con los no fumadores. Hubo una fuerte correlación positiva entre la aparición de micronúcleos y la frecuencia y duración del tabaquismo. También se observó un aumento relacionado con la edad en los grupos de mayor edad.

Conclusión:

el estudio revela una fuerte correlación positiva entre la aparición de micronúcleos y la frecuencia y duración del tabaquismo. Esta observación es vital en la utilización de la detección de micronúcleos en frotis como una herramienta pronostica, educativa e intervencionista en el manejo de pacientes con hábitos de fumar.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Micronucleus Tests / Micronuclei, Chromosome-Defective / Tobacco Use / Tobacco Smoking / Mouth Mucosa Limits: Adult / Female / Humans / Male Country/Region as subject: Asia Language: English Journal: J. oral res. (Impresa) Journal subject: Dentistry Year: 2020 Type: Article Affiliation country: India Institution/Affiliation country: Manipal Academy of Higher Education/IN / Sri Rajiv Gandhi College of Dental Sciences and Hospital/IN

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Full text: Available Index: LILACS (Americas) Main subject: Micronucleus Tests / Micronuclei, Chromosome-Defective / Tobacco Use / Tobacco Smoking / Mouth Mucosa Limits: Adult / Female / Humans / Male Country/Region as subject: Asia Language: English Journal: J. oral res. (Impresa) Journal subject: Dentistry Year: 2020 Type: Article Affiliation country: India Institution/Affiliation country: Manipal Academy of Higher Education/IN / Sri Rajiv Gandhi College of Dental Sciences and Hospital/IN