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Avaliação do tricograma como método de diagnóstico de prurido em gatos com lesões alopécicas

Authors: Courinha, Margarida Mendes Varela;

Avaliação do tricograma como método de diagnóstico de prurido em gatos com lesões alopécicas

Abstract

Devido à dificuldade na identificação do prurido em gatos, pela natureza dos seus comportamentos de limpeza, testes como o tricograma são fundamentais para esse efeito. Este estudo teve o objetivo de avaliar o tricograma como método de diagnóstico indireto de prurido, em gatos com alopécia numa zona acessível à lambedura. Constituiu-se uma amostra de 82 gatos, com alopécia total ou parcial (n= 41) e sem patologias dermatológicas (n= 41), como controlo. Selecionaram-se como locais de recolha, em ambos os grupos, a região da cabeça (sem acesso) e do ventre (com acesso) e analisaram-se 20 pelos por região, em cada animal. No tricograma avaliou-se a integridade das hastes pilosas e fase folicular predominante. Foram encontradas diferenças significativas entre as áreas corporais, dentro dos grupos, com um número superior de hastes quebradas no ventre, tanto no grupo com alopécia (Mean Rank= 21,35 vs 3,75; p= 0,000; r= -0,57), como no grupo de controlo (MR= 18,70 vs 8,50; p= 0,000; r= -0,50). Na comparação entre grupos, as diferenças não foram significativas entre as regiões da cabeça (p= 0,948; r= -0,007), contudo, o grupo com alopécia apresentava um número superior de hastes quebradas no ventre, em comparação com o grupo de controlo, com uma grande magnitude de efeito (MR= 54,44 vs 28,56; p= 0,000, r= -0,55). Apenas o grupo com alopécia apresentava um número superior de raízes em anagénese no ventre do que na cabeça (MR= 19,72 vs 8,75; p= 0,000, r= -0,52). Na comparação entre grupos, o grupo com alopécia apresentava números superiores, tanto na região do ventre (MR= 52,82 vs 30,18; p= 0,000; r= -0,48) como na cabeça (MR= 45,91 vs 37,09; p= 0,000; r= -0,19), tendo no entanto a última, uma magnitude de efeito considerada pequena. Estes resultados sugerem a utilidade do tricograma na identificação de prurido como causa de alopécia autoinduzida e o aumento da génese pilosa em áreas lesionais.

Due to the difficulty in identifying pruritus in cats, caused by the nature of their cleaning habits, tests like trichogram are essential to this purpose. The goal of this study was to evaluate the trichogram as a diagnostic tool for indirect determination of pruritus in cats with alopecia in areas accessible to licking. A sample population of 82 cats was assembled, with total or partial alopecia (n= 41) and without dermatological pathologies (n= 41), as control group. Sample sites were selected, in both groups, being the head as an area without access and the abdomen with access and 20 hairs were examined per region and from each animal. The distal ends and predominant follicular phase were accessed on the trichograms. Significant differences were found between distinct body regions, within groups, with a higher number of broken tips in the abdomen of the alopecic group (Mean Rank= 21,35 vs 3,75; p= 0,000; r= -0,57) and the control group (MR= 18,70 vs 8,50; p= 0, 000; r= -0,50). Comparing the two groups, the differences weren’t significant between the head region (p= 0,948; r= -0,007), however the alopecic group had a higher number of broken tips in the abdomen, in contrast with the control group, with a large effect size (MR= 54,44 vs 28,56; p= 0,000, r= -0,55). Only the alopecic group presented a higher number of anagen roots in the abdomen, when compared to the head region (MR= 19,72 vs 8,75; p= 0,000, r= -0,52). Comparing the two groups, the alopecic group had higher numbers both in the abdomen region (MR= 52,82 vs 30,18; p= 0,000, r = -0,48) and in the head region (MR= 45,91 vs 37,09; p= 0,000, r= -0,19), although, the last one presented a smaller effect size. This results suggests the usefulness of the trichogram identifying pruritus as a self-inflicted cause of alopecia and the increase of the hair genesis in affected areas.

Orientação : Margarida Simões ; co-orientação : Ana Margarida Oliveira

Country
Portugal
Related Organizations
Keywords

GATOS, TRICHOGRAM, PRURITUS, MEDICINA VETERINÁRIA, FELÍDEOS, ALOPECIA, VETERINÁRIA, VETERINARY MEDICINE, CATS, TRICOGRAMA, PRURIDO, FELIDS, MESTRADO INTEGRADO EM MEDICINA VETERINÁRIA

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green