X-gal staining of canine skin tissues: A technique with multiple possible applications

• Published in: Journal of natural science, biology and medicine biology and medicine, 2014-07, Vol.5 (2), p.245-249
• Main Authors: Pati, Soumyaranjan, Jain, Sumeet, Behera, Monalisa, Acharya, Aditya, KPanda, Susen, Senapati, Shantibhusan
• Format: Article
• Language: English
• Subjects: Age; Animals; Arthritis; Biomarkers; Cell cycle; Chronic illnesses; Disease; Dogs; Enzyme regulation; Enzymes; Hydrolases; Identification and classification; Original; Physiological aspects; Physiology; Potassium; Protein research; Regulation; Science; Senescence; Studies
• ISSN: 0976-9668; 2229-7707
• DOI: 10.4103/0976-9668.136147

Background: Estimation of β-galactosidase (βgal) activity in human cells and tissues indicate its possible use as a marker of senescence. Objectives: This study was done to detect senescence-associated βgal (SA-βgal) activity in canine skin tissue by using its substrate 5-bromo-4-chloro-3-indolyl β-D-galactosidase (X-gal). Materials and Methods: Skin samples were collected through rapid necropsy process. The X-gal staining was done by altering different factors of the staining procedure like pH of the reagents and incubation time. Further, effect of tissue preservation procedure was also evaluated. Results: Typical X-gal staining was detected in old dogs′ skin samples and it was detectable both at pH 6 and pH 7.3. The cells present in the inner lining of the hair follicles and sebaceous glands are the major cells that have high SA-βgal activity. The X-gal staining intensity was more prominent in tissues preserved in liquid nitrogen at -196°C than in -80°C freezer. Prolonged incubation period increased the intensity of staining. Conclusions: This study indicates possibility of X-gal staining in canine tissues and opens an avenue for further in-depth studies that might be useful for different research and clinical studies like determination of dog′s approximate age.