El polimorfismo genético del factor de necrosis tumoral alfa como factor de riesgo en patología / Tumor necrosis factor alpha genetic polymorphism as a risk factor in disease
Rev. méd. Chile
;
130(9): 1043-1050, sept. 2002. graf
Article
in Spanish
| LILACS
| ID: lil-323240
RESUMO
Cytokine unbalance is responsible for the pathogenesis of diverse inflammatory, autoimmune and infectious diseases, and Tumor Necrosis Factor Alpha (TNFa), among other cytokines, plays a central role. TNFa production can be regulated at the transcriptional, post-transcriptional, and translational levels. Variability in the promoter and coding regions of the TNFa gene may modulate the magnitude of its secretory response. Up to date, several single nucleotide polymorphisms (SNPs) have been identified in the human TNFa gene promoter. One of these, is a guanine to adenine transition at position -308, that generates the TNF1 and TNF2 alleles, respectively. The TNF2 allele is associated to a high in vitro TNF expression, and it has also been linked to an increased susceptibility and severity, for a variety of illnesses, such as rheumatoid arthritis, systemic lupus erythematosus, inflammatory bowel disease, Alzheimer disease and cerebral malaria among others. It is also associated with a higher septic shock susceptibility and mortality. The investigation of polymorphisms within the TNFa cluster will be important in understanding the role of TNFa regulation in specific diseases
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Polymorphism, Genetic
/
Tumor Necrosis Factor-alpha
Type of study:
Etiology study
/
Prognostic study
/
Risk factors
/
Systematic reviews
Limits:
Humans
Language:
Spanish
Journal:
Rev. méd. Chile
Journal subject:
Medicine
Year:
2002
Type:
Article
/
Project document
Affiliation country:
Chile
Institution/Affiliation country:
Universidad de Chile/CL
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