Augmented telomerase activity and reduced telomere length in parthenium-induced contact dermatitis.
Summary of "Augmented telomerase activity and reduced telomere length in parthenium-induced contact dermatitis."
Backgroundâ€‚ Parthenium dermatitis is a common chronic inflammatory disease with activated T lymphocytes that recognize the antigens, which leads to proliferation and differentiation. Telomeres and telomerase play an important role in the regulation of life span of the cell. Telomere length maintained by telomerase, are specialized repeats present at the end of chromosomes which protect it from degradation, end-to-end fusion and are important for integrity of chromosomes. Objectivesâ€‚ The aim of this study was to measure telomerase activity and telomere length in Peripheral blood mononuclear cell (PBMC), CD4(+) and CD8(+) T lymphocytes from parthenium dermatitis patients. Methodsâ€‚ The study includes 50 patients of parthenium dermatitis confirmed by patch testing and 50 healthy controls. Telomerase activity was measured using the telomere repeat amplification protocol using PCR-ELISA kit. Telomere length was measured by using Telo TAGGG Telomere Length Assay Kit. Resultsâ€‚ Significantly elevated levels of telomerase activity was observed in PBMC, CD4(+) and CD8(+) T cells of parthenium dermatitis patients as compared with healthy controls. However, significantly reduced telomere length in PBMC, CD4(+) and CD8(+) T cells have been found in patients than healthy subjects, but there was no difference between CD4(+) and CD8(+) T cells in patients. Conclusionâ€‚ This study might have provided insight into the role of telomerase in parthenium dermatitis that is characterized by the recruitment of T lymphocytes, which play an important role in this inflammatory disease. The augmented telomerase activity and reduced terminal restriction fragment length might be explored as a potential diagnostic/prognostic marker for parthenium dermatitis in future.
Department of Biochemistry Department of Dermatology, All India Institute of Medical Sciences, New Delhi, India.
This article was published in the following journal.
Name: Journal of the European Academy of Dermatology and Venereology : JEADV
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/22946492
- DOI: http://dx.doi.org/10.1111/j.1468-3083.2012.04691.x
Medical and Biotech [MESH] Definitions
Telomeric Repeat Binding Protein 1
A ubiquitously expressed telomere-binding protein that is present at TELOMERES throughout the CELL CYCLE. It is a suppressor of telomere elongation and may be involved in stabilization of telomere length. It is structurally different from TELOMERIC REPEAT BINDING PROTEIN 2 in that it contains acidic N-terminal amino acid residues.
Telomeric Repeat Binding Protein 2
A ubiquitously expressed telomere-binding protein that is present at TELOMERES throughout the cell cycle. It is a suppressor of telomere elongation and may be involved in stabilization of telomere length. It is structurally different from TELOMERIC REPEAT BINDING PROTEIN 1 in that it contains basic N-terminal amino acid residues.
Proteins that specifically bind to TELOMERES. Proteins in this class include those that perform functions such as telomere capping, telomere maintenance and telomere stabilization.
A terminal section of a chromosome which has a specialized structure and which is involved in chromosomal replication and stability. Its length is believed to be a few hundred base pairs.
A group of telomere associated proteins that interact with TRF1 PROTEIN, contain ANKYRIN REPEATS and have poly(ADP-ribose) polymerase activity.
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