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Fray S, Achouri-Rassas AA, Hadj Fredj S, Messaoud T, Belal S. Association between H2 haplotype of microtubule associated protein tau gene (deletion / insertion) with Alzheimer Disease in Tunisian patients. Neurol Res 2022; 44:814-818. [PMID: 35348036 DOI: 10.1080/01616412.2022.2056338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
It is widely recognized that Alzheimer's disease (AD) is the main cause of dementia in the elderly. AD is typically characterized by the extraneuronal plaque made up essentially of the amyloid β peptide and intraneuronal tangles of hyperphosphorylated microtubule-associated Tau protein. This study investigates the possible interaction between AD and the deletion/insertion polymorphism in intron 9 of the Tau gene haplotype and APOE state in a Tunisian AD cases population (n = 85) and control (n = 91). The H2/H2 genotype was higher in the AD group as compared to the controls (22.4% vs. 7.8%). The frequency of H2 allele is higher in the patients group, and the difference of allele frequency is statistically significant between the two groups (χ2 = 12.220, p < 0.05). H2 allele is correlated with the female gender within the patient group (χ2 = 7.649, p = 0.006) Tau H2 haplotype can be identified as a risk factor of AD in the studied Tunisian population and was associated to female gender. There is no significant correlation between the frequency of Tau gene ins/del polymorphism and cognitive profile distribution in the patient group (p > 0.05).
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Affiliation(s)
- Saloua Fray
- Faculty of Medicine of Tunis, Tunis El Manar University, Tunis, Tunisia.,Department of Neurology, Charles Nicolle Hospital, Tunis, Tunisia.,Children Hospital, Biochemistry and Molecular Biology Laboratory, Tunis, Tunisia
| | - Afef Achouri Achouri-Rassas
- Department of Neurology, Charles Nicolle Hospital, Tunis, Tunisia.,Neurosciences Project, Faculty of Medicine of Tunis, Tunis El Manar University, Tunis, Tunisia
| | - Sondes Hadj Fredj
- Children Hospital, Biochemistry and Molecular Biology Laboratory, Tunis, Tunisia
| | - Taieb Messaoud
- Children Hospital, Biochemistry and Molecular Biology Laboratory, Tunis, Tunisia
| | - Samir Belal
- Faculty of Medicine of Tunis, Tunis El Manar University, Tunis, Tunisia.,Department of Neurology, National Institute Mongi Ben Hmida of Neurology, Tunis, Tunisia.,Molecular Neurobiology and Neuropathology Research laboratory, Faculty of Medicine of Tunis, Tunis El Manar University, Tunis, Tunisia
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