Comparing dermoscopy and histological examination of normal equine skin

Tomich, Lara M.; Pieper, Jason B.; Stern, Adam W.

doi:10.1111/vde.12511

Cited by 10 publications

(14 citation statements)

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“…Foram encontrados 12 artigos, 5 (41,66%) sobre caninos, 4 (33,33%) sobre felinos e 3 (25%) sobre equinos. Estes trabalhos foram selecionados e revisados, sendo possível ter acesso na área de Medicina Veterinária, a trabalhos sobre dermatoscopia, com uso na avaliação da pele felina normal, dermatofitose felina e canina, padrão de alopecia em cães (Scarampella et al, 2015, Dong et al, 2016, Zanna et al, 2016, Scarampella et al, 2017, Scarampella & Roccabianca, 2018, avaliação de pele equina normal (Legnani et al, 2017, Tomich et al, 2017, Zniszczynska et al, 2021, malformações linfáticas dérmicas superficiais congênitas acrais em gatos (Legnani et al 2020) e descrição de padrão colorimétrico em cães com eritroderma (Cugmas & Struc, 2020, Cugmas et al, 2021.…”

Section: Resultsunclassified

A utilização da dermatoscopia na Medicina Veterinária: Uma revisão sistemática de literatura

Couceiro

Sousa

Coutinho

2021

RSD

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A dermatoscopia é um método diagnóstico realizado in vivo, de caráter não invasivo, rápida execução, indolor e não agride a pele. É utilizada como exame complementar e permite a observação de estruturas da epiderme, da junção dermoepidérmica e da derme papilar e reticular superficial, sendo considerada um elo entre o quadro clínico (macroscópico) e o exame histopatológico. Com o objetivo de realizar uma revisão sistemática dos artigos publicados com dermatoscopia em animais, através de uma revisão de literatura dos conceitos, técnicas e aplicações deste exame na Medicina Veterinária, foi realizada uma pesquisa eletrônica utilizando as bases de dados PubMed, Scielo, CAFe, Wiley online library e Google scholar. Foram encontrados 12 artigos, 5 (41,66%) sobre caninos, 4 (33,33%) sobre felinos e 3 (25%) sobre equinos. Estes trabalhos utilizaram a dermatoscopia, na avaliação da pele felina e equina normal, dermatofitose felina e canina, padrão de alopecia em cães, malformações linfáticas dérmicas superficiais congênitas acrais em gatos e descrição de padrão colorimétrico em cães com eritroderma. Através desta pesquisa, demonstrou-se que a dermatoscopia ainda é incipiente na Medicina Veterinária, porém com resultados promissores. O exame dermatoscópico revelou-se útil para descrever a pele normal, como triagem e auxiliar à conclusão do diagnóstico de algumas doenças de pele em animais. Embora observe-se o interesse de pesquisadores pelo assunto, e a potencialidade do exame, ainda se faz necessária a realização de mais pesquisas que identifiquem novas aplicabilidades da dermatoscopia e padrões dermatoscópicos dentre as diversas dermatopatias que acometem animais.

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Section: Resultsunclassified

A utilização da dermatoscopia na Medicina Veterinária: Uma revisão sistemática de literatura

Couceiro

Sousa

Coutinho

2021

RSD

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“…Although a handful of published veterinary studies have assessed the use of videodermoscopy in cats, dogs and horses, this study represents the first to assess the use of a videodermatoscope in conjunction with an automated image analysis program to define hair follicle parameters of healthy dogs. The data presented here confirm that although limitations do exist, the TrichoScale Pro © software can readily provide sensitive measurements and which offer a multitude of benefits for veterinary trichoscopy in both clinical and research settings.…”

Section: Discussionmentioning

confidence: 99%

“…The combination of trichoscopy with automated image analysis programs has provided a means of rapid, user‐independent assessment of normal and pathological human hair follicle parameters . To the best of the authors' knowledge, only a handful of veterinary dermoscopy studies have been published, one of which compared trichoscopic findings between healthy dogs and those with various causes of canine noninflammatory alopecia. This study described a positive correlation between trichoscopic and histological findings …”

Section: Introductionmentioning

confidence: 99%

Evaluation of hair follicle parameters using TrichoScale Pro^© in healthy dogs: a pilot study

Schuldenfrei

Pieper

2020

Veterinary Dermatology

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Background -Trichoscopy, in combination with image analysis software, is a readily available, efficient diagnostic tool for assessing hair follicle parameters of people in vivo. Systems designed for use in human dermatology must be evaluated and validated with animal skin/hair before they can be used for veterinary applications.Objectives -To evaluate the use of a commercial software package for image analysis of canine hair follicles and to define hair follicle parameters. Animals -Thirteen client-owned healthy dogs.Methods -Trichoscopic images at x20 magnification were obtained from three shaved body sites (left dorsal head, left thorax, left flank) over a five day period, then analyzed by the software.Results -The image analysis software was able to identify microscopic changes in hair length on a daily basis, calculating a mean hair growth rate of 0.065 mm/day. Each of the three body sites had consistent hair growth rates across all days. Anagen and telogen percentages were consistent at each body site by Day 2 (48 h postclipping). Data for mean hair thickness, and primary and secondary hair percentages also are reported.Conclusions -Although it provides less useful data for canine hair coats than for human scalp hair, the system evaluated provides an easy, noninvasive, rapid means for assessing several important canine hair follicle parameters: daily hair growth rates, anagen and telogen percentages, primary and secondary hair percentages, and mean hair thickness. This diagnostic tool could serve to establish breed-specific hair coat standards, evaluating hair follicle changes in various canine alopecic conditions and monitoring coat-promoting treatments in dogs.

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“…Over the last 70 years, human and mice hair follicles are extensively studied, and other animal models include pig, cattle, and sheep were also used to study hair follicle biology [ 7 ]. Although there are some studies on the horse skin [ 8 , 9 ], little is on horse hair follicle [ 10 , 11 ]. Understanding the hair growth, cycle, and melanogenesis in different parts of horse skin provides insights and valuable information for studying the regional specificity of hair follicles in other mammals.…”

Section: Introductionmentioning

confidence: 99%

Hair follicle regional specificity in different parts of bay Mongolian horse by histology and transcriptional profiling

Zhao

et al. 2020

BMC Genomics

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Background Different morphological structures of hairs having properties like defense and camouflage help animals survive in the wild environment. Horse is one of the rare kinds of animals with complex hair phenotypes in one individual; however, knowledge of horse hair follicle is limited in literature and their molecular basis remains unclear. Therefore, the investigation of horse hair follicle morphogenesis and pigmentogenesis attracts considerable interest. Result Histological studies revealed the morphology and pigment synthesis of hair follicles are different in between four different parts (mane, dorsal part, tail, and fetlock) of the bay Mongolian horse. Hair follicle size, density, and cycle are strongly associated with the activity of alkaline phosphatase (ALP). We observed a great difference in gene expression between the mane, tail, and fetlock, which had a greater different gene expression pattern compared with the dorsal part through transcriptomics. The development of the hair follicle in all four parts was related to angiogenesis, stem cells, Wnt, and IGF signaling pathways. Pigmentogenesis-related pathways were involved in their hair follicle pigment synthesis. Conclusions Hair follicle morphology and the activity of ALP differ among four body parts in bay Mongolian horse. Hair follicles of the different body parts of the are not synchronized in their cycle stages. GO terms show a regional specificity pattern between different skin parts of the bay Mongolian horse. These results provide an insight into the understanding of the biological mechanism of the hair follicle in other mammals.

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Comparing dermoscopy and histological examination of normal equine skin

Cited by 10 publications

References 8 publications

A utilização da dermatoscopia na Medicina Veterinária: Uma revisão sistemática de literatura

A utilização da dermatoscopia na Medicina Veterinária: Uma revisão sistemática de literatura

Evaluation of hair follicle parameters using TrichoScale Pro^© in healthy dogs: a pilot study

Hair follicle regional specificity in different parts of bay Mongolian horse by histology and transcriptional profiling

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Comparing dermoscopy and histological examination of normal equine skin

Cited by 10 publications

References 8 publications

A utilização da dermatoscopia na Medicina Veterinária: Uma revisão sistemática de literatura

A utilização da dermatoscopia na Medicina Veterinária: Uma revisão sistemática de literatura

Evaluation of hair follicle parameters using TrichoScale Pro© in healthy dogs: a pilot study

Hair follicle regional specificity in different parts of bay Mongolian horse by histology and transcriptional profiling

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Evaluation of hair follicle parameters using TrichoScale Pro^© in healthy dogs: a pilot study