Reduction of the argyrophilic nucleolar organizing region associated protein synthesis with age in buccal epithelial cells of healthy individuals
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Dosyalar
Tarih
2015
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Background Nucleolus organizer regions (NORs) consist of the rRNA coding gene family (rDNA) in the cell nucleus. The argyrophilic proteins are selectively stained with silver nitrate and bind these regions. It was reported that NOR (rDNA) activity decreases in human lymphocytes, fibroblasts and bone marrow with age. However, to our knowledge there have not been any studies related to the NORs in oral epithelial cells of healthy individuals. Aim Our aim is to detect any correlation between age and Total AgNOR area/Total nucleus area (TAA/TNA) values in buccal epithelial cells of healthy individuals. Methods Oral epithelial cells from 50 healthy individuals (age range of 2-80 years old) were spread onto a clean glass slide, air dried and fixed. Then the AgNOR staining protocol was performed on these cells. TAA/TNA ratio and AgNOR dots were calculated using software. From each person 50 oral epithelial cells were evaluated. Results Statistically significant correlations were found between mean TAA/TNA values and age (Rsq = 0.534, p < 0.001 for linear and Rsq = 0.728, p < 0.0001 for polynominal regression), and between AgNOR number and age (Rsq = 0.621, p < 0.001 for linear and Rsq = 0.693, p < 0.0001 for polynominal regression). Conclusion There is a significant correlation between age and AgNOR amount (ribosome biosynthesis rate) in buccal epithelial cells of healthy individuals. AgNORs in buccal epithelial cells may be used for detection of age.
Açıklama
WOS: 000351531100012
PubMed: 25082567
PubMed: 25082567
Anahtar Kelimeler
NOR, AgNORs, Buccal epithelial cells, rDNA, Nucleolus
Kaynak
Aging Clinical And Experimental Research
WoS Q Değeri
Q4
Scopus Q Değeri
Q2
Cilt
27
Sayı
2
