Elena T Contreras, Kate Bruner, Courtney Hegwer, Andrew Simpson
{"title":"成年室内家猫（Felis catus）的爪子生长速率。","authors":"Elena T Contreras, Kate Bruner, Courtney Hegwer, Andrew Simpson","doi":"10.1111/vde.13335","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>Keratinised tissues, such as nails and claws, accumulate hormones over time; the claws' hormone concentrations are being explored as potential biomarkers. Timelines for hormone deposition can be established if claw growth rates are known. Hormone concentration within cat claws has been recently evaluated, yet the growth rates of cat claws remain unknown.</p><p><strong>Hypothesis/objectives: </strong>To estimate the growth rate of adult cats' claws, we hypothesised that front claw growth rates would differ from those of rear claws.</p><p><strong>Animals: </strong>Seventeen client-owned, indoor, neutered, adult cats.</p><p><strong>Materials and methods: </strong>Cats' claws were clipped and then measured lengthwise. Claws were repeatedly measured over time with repeat claw trims after approximately 1 month, followed by repeat measurements. Average claw growth rates were calculated for three digit groups: forelimb digit 1, forelimb digits 2-5 (front) and hind limb (rear). Growth rates of the front compared to the rear and digit 1 were compared through linear mixed effects regression modelling.</p><p><strong>Results: </strong>The daily mean claw growth rates were 0.13 mm for front and digit 1, and 0.08 mm for rear. The growth rate of rear claws was significantly lower (p < 0.001) than for front claws; rear claws grew, on average, 0.04 mm less per day than front claws.</p><p><strong>Conclusions and clinical relevance: </strong>Our study provides the first measurement of claw growth rates in cats. The significantly slower growth rate of rear claws compared to front claws should be considered when evaluating metabolites within cat claws.</p>","PeriodicalId":23599,"journal":{"name":"Veterinary dermatology","volume":" ","pages":""},"PeriodicalIF":1.9000,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Claw growth rates in a subset of adult, indoor, domestic cats (Felis catus).\",\"authors\":\"Elena T Contreras, Kate Bruner, Courtney Hegwer, Andrew Simpson\",\"doi\":\"10.1111/vde.13335\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Background: </strong>Keratinised tissues, such as nails and claws, accumulate hormones over time; the claws' hormone concentrations are being explored as potential biomarkers. Timelines for hormone deposition can be established if claw growth rates are known. Hormone concentration within cat claws has been recently evaluated, yet the growth rates of cat claws remain unknown.</p><p><strong>Hypothesis/objectives: </strong>To estimate the growth rate of adult cats' claws, we hypothesised that front claw growth rates would differ from those of rear claws.</p><p><strong>Animals: </strong>Seventeen client-owned, indoor, neutered, adult cats.</p><p><strong>Materials and methods: </strong>Cats' claws were clipped and then measured lengthwise. Claws were repeatedly measured over time with repeat claw trims after approximately 1 month, followed by repeat measurements. Average claw growth rates were calculated for three digit groups: forelimb digit 1, forelimb digits 2-5 (front) and hind limb (rear). Growth rates of the front compared to the rear and digit 1 were compared through linear mixed effects regression modelling.</p><p><strong>Results: </strong>The daily mean claw growth rates were 0.13 mm for front and digit 1, and 0.08 mm for rear. The growth rate of rear claws was significantly lower (p < 0.001) than for front claws; rear claws grew, on average, 0.04 mm less per day than front claws.</p><p><strong>Conclusions and clinical relevance: </strong>Our study provides the first measurement of claw growth rates in cats. The significantly slower growth rate of rear claws compared to front claws should be considered when evaluating metabolites within cat claws.</p>\",\"PeriodicalId\":23599,\"journal\":{\"name\":\"Veterinary dermatology\",\"volume\":\" \",\"pages\":\"\"},\"PeriodicalIF\":1.9000,\"publicationDate\":\"2025-03-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Veterinary dermatology\",\"FirstCategoryId\":\"97\",\"ListUrlMain\":\"https://doi.org/10.1111/vde.13335\",\"RegionNum\":3,\"RegionCategory\":\"农林科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"DERMATOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Veterinary dermatology","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.1111/vde.13335","RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"DERMATOLOGY","Score":null,"Total":0}
Claw growth rates in a subset of adult, indoor, domestic cats (Felis catus).
Background: Keratinised tissues, such as nails and claws, accumulate hormones over time; the claws' hormone concentrations are being explored as potential biomarkers. Timelines for hormone deposition can be established if claw growth rates are known. Hormone concentration within cat claws has been recently evaluated, yet the growth rates of cat claws remain unknown.
Hypothesis/objectives: To estimate the growth rate of adult cats' claws, we hypothesised that front claw growth rates would differ from those of rear claws.
Materials and methods: Cats' claws were clipped and then measured lengthwise. Claws were repeatedly measured over time with repeat claw trims after approximately 1 month, followed by repeat measurements. Average claw growth rates were calculated for three digit groups: forelimb digit 1, forelimb digits 2-5 (front) and hind limb (rear). Growth rates of the front compared to the rear and digit 1 were compared through linear mixed effects regression modelling.
Results: The daily mean claw growth rates were 0.13 mm for front and digit 1, and 0.08 mm for rear. The growth rate of rear claws was significantly lower (p < 0.001) than for front claws; rear claws grew, on average, 0.04 mm less per day than front claws.
Conclusions and clinical relevance: Our study provides the first measurement of claw growth rates in cats. The significantly slower growth rate of rear claws compared to front claws should be considered when evaluating metabolites within cat claws.
期刊介绍：
Veterinary Dermatology is a bi-monthly, peer-reviewed, international journal which publishes papers on all aspects of the skin of mammals, birds, reptiles, amphibians and fish. Scientific research papers, clinical case reports and reviews covering the following aspects of dermatology will be considered for publication:
-Skin structure (anatomy, histology, ultrastructure)
-Skin function (physiology, biochemistry, pharmacology, immunology, genetics)
-Skin microbiology and parasitology
-Dermatopathology
-Pathogenesis, diagnosis and treatment of skin diseases
-New disease entities
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