Kwon Je-Seong, Bok Eun-Yeong, Kim Daekyoung, Hong Chae-Yeon, Choe Yong-Ho, Kim Jaemin, Hwang Tae Sung, Lee Sung-Lim, Yoon Ji-Seon
Biosafety Research Institute and College of Veterinary Medicine, Jeonbuk National University, Iksan, Korea.
Division of Animal Diseases & Health, National Institute of Animal Science, Rural Development Administration, Wanju, Jeollabuk-do, Korea.
Vet Dermatol. 2025 Oct;36(5):689-695. doi: 10.1111/vde.13367. Epub 2025 Jun 17.
Understanding the physiological and biophysical characteristics of skin provides information for developing appropriate management strategies for skin diseases. However, in dogs, variations in skin biophysical parameters, such as age, sex and breed, remain poorly understood.
HYPOTHESIS/OBJECTIVES: This study analysed three biophysical characteristics of healthy dog skin (hydration, pH and sebum content) and investigated the effects of sex, age and breed.
One hundred forty-nine dogs without skin problems were enrolled. Skin hydration, pH and sebum content were measured using a multifunctional skin physiology monitor. The dogs were divided into four age groups: <1 year, 1-6 years, 7-12 years and >13 years.
Skin hydration levels were significantly lower in the >13 years group than in the 1-6 years and 7-12 groups. Additionally, skin pH levels in the >13 years group were significantly lower than in the 7-12 group. Furthermore, skin biophysical parameters among the five breed groups - beagles (n = 37), Malteses (n = 18), miniature poodles (n = 24), cocker spaniels (n = 11) and Pomeranians (n = 12) - revealed that skin hydration and pH were significantly higher in beagles than those of Malteses and miniature poodles.
These findings indicate that biophysical properties, including skin hydration and pH, vary with age and breed. This study provides fundamental data on the effects of age, sex and breed on the biophysical characteristics of dog skin.
了解皮肤的生理和生物物理特性可为制定皮肤病的适当管理策略提供信息。然而，在犬类中，皮肤生物物理参数如年龄、性别和品种的差异仍知之甚少。
假设/目标：本研究分析了健康犬皮肤的三种生物物理特性（水合作用、pH值和皮脂含量），并研究了性别、年龄和品种的影响。
招募了149只无皮肤问题的犬。使用多功能皮肤生理监测仪测量皮肤水合作用、pH值和皮脂含量。将犬分为四个年龄组：<1岁、1 - 6岁、7 - 12岁和>13岁。
13岁组的皮肤水合水平显著低于1 - 6岁组和7 - 12岁组。此外，>13岁组的皮肤pH值显著低于7 - 12岁组。此外，在五个品种组（比格犬（n = 37）、马尔济斯犬（n = 18）、迷你贵宾犬（n = 24）、可卡犬（n = 11）和博美犬（n = 12））中，皮肤生物物理参数显示，比格犬的皮肤水合作用和pH值显著高于马尔济斯犬和迷你贵宾犬。
这些发现表明，包括皮肤水合作用和pH值在内的生物物理特性随年龄和品种而变化。本研究提供了关于年龄、性别和品种对犬皮肤生物物理特性影响的基础数据。
