PMID- 23408162 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20130215 LR - 20211021 IS - 2008-2835 (Print) IS - 2008-4625 (Electronic) IS - 2008-2835 (Linking) VI - 1 IP - 3 DP - 2009 Oct TI - Lack of Association between Tumor Necrosis Factor-alpha -308 G/A Polymorphism and Risk of Developing Late-Onset Alzheimer's Disease in an Iranian Population. PG - 193-7 AB - Late-onset Alzheimer's Disease (LOAD) is a neurodegenerative disorder and the most common form of dementia affecting people over 65 years old. Alzheimer's disease is a complex disease with multi-factorial etiology. Inflammation has been approved to have an important role in the pathogenesis of Alzheimer's disease (AD). TNF-alpha is a main pro-inflammatory cytokine that plays an essential role in initiation and regulation of inflammatory responses. Several studies have shown the probable association of polymorphism at TNF-alpha gene's promoter with AD pathogenesis. This study was performed to determine whether this polymorphism contributes to the risk for late-onset Alzheimer's disease (LOAD) in Iranian population. One hundred and forty AD patients and 158 healthy controls were recruited in the study. Following extraction of genomic DNA, using PCR/RFLP methods the genotype and allele frequencies were determined in case and control subjects. The statistical analysis showed no significant difference in the allele and genotype frequencies due to this polymorphism between the two groups. Also after stratifying the subjects by their APOE-varepsilon4 status, no significant association was observed. Our results suggest that Tumor necrosis factor-alpha (TNF-alpha)-308 G/A is not a risk or protective factor for late-onset Alzheimer's disease in Iranian population. However, to confirm these results further study with a bigger sample size may be required. FAU - Manoochehri, Mehdi AU - Manoochehri M AD - Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran. FAU - Kamali, Koorosh AU - Kamali K FAU - Rahgozar, Mehdi AU - Rahgozar M FAU - Ohadi, Mina AU - Ohadi M FAU - Farrokhi, Homa AU - Farrokhi H FAU - Khorshid, Hamid Reza Khorram AU - Khorshid HR LA - eng PT - Journal Article PL - Iran TA - Avicenna J Med Biotechnol JT - Avicenna journal of medical biotechnology JID - 101511065 PMC - PMC3558134 OTO - NOTNLM OT - Alzheimer's disease OT - Gene OT - Genetic association study OT - Polymorphism OT - Population OT - TNF-alpha EDAT- 2009/10/01 00:00 MHDA- 2009/10/01 00:01 PMCR- 2009/10/01 CRDT- 2013/02/15 06:00 PHST- 2009/10/30 00:00 [received] PHST- 2009/12/09 00:00 [accepted] PHST- 2013/02/15 06:00 [entrez] PHST- 2009/10/01 00:00 [pubmed] PHST- 2009/10/01 00:01 [medline] PHST- 2009/10/01 00:00 [pmc-release] AID - AJMB-1-193 [pii] PST - ppublish SO - Avicenna J Med Biotechnol. 2009 Oct;1(3):193-7.