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Parkinson's disease (PD) is a complex disorder with contributions by environmental and genetic factors. LRRK2 R1628P is a major genetic risk factor for developing PD in Asian populations. However, the effect of this variant in Kinh Vietnamese remains unclear. This study collected DNA samples of 832 subjects comprising 190 PD patients and 642 control cases, and the LRRK2 R1628P variant was genotyped using an allele-specific oligonucleotide PCR method. The prevalence of the GC genotype of LRRK2 R1628P was significantly higher in the PD group than in the control group, and the LRRK2 R1628P variant showed a significant association with PD with OR = 2.91 (95% CI = 1.50-5.62). LRRK2 R1628P was also found to be associated with PD in subpopulations for males, early-onset, and late-onset. These results emphasize the important genetic contribution of LRRK2 R1628P in the risk of developing PD in the Kinh Vietnamese population.
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http://dx.doi.org/10.1007/s10048-025-00840-9 | DOI Listing |
Neurogenetics
July 2025
Department of Physiology-Pathophysiology-Immunology, Faculty of Medicine, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam.
Parkinson's disease (PD) is a complex disorder with contributions by environmental and genetic factors. LRRK2 R1628P is a major genetic risk factor for developing PD in Asian populations. However, the effect of this variant in Kinh Vietnamese remains unclear.
View Article and Find Full Text PDFInt J Mol Sci
April 2025
Neuroscience and Behavioral Disorders Program, DUKE-NUS Graduate Medical School, Singapore 169857, Singapore.
Parkinson's disease (PD) is a neurodegenerative disorder affecting nearly 10 million people worldwide, and for which no cure is currently known. Mutations in the Leucine-Rich Repeat Kinase 2 (LRRK2) gene, age, as well as environmental factors such as neurotoxin exposure and stress, are known to increase the risk of developing the disease in humans. To investigate the role of a specific Asian variant of the LRRK2 gene to induce susceptibility to stress and trigger PD phenotypes with time, knock-in (KI) mice bearing the human LRRK2 R1628P risk variant have been generated and studied from 2 to 16 months of age in the presence (or absence) of stress insults, including neurotoxin injections and chronic mild stress applied at 3 months of age.
View Article and Find Full Text PDFAnn Clin Transl Neurol
January 2025
Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, China.
Objective: We established a prospective cohort study to investigate the differences in motor and non-motor symptoms between idiopathic Parkinson's disease (IPD) and Parkinson's disease in carriers of leucine-rich repeat kinase 2 (LRRK2) gene risk variants (LRRK2-PD).
Methods: The study included 1407 individuals with IPD and 649 individuals with LRRK2-PD (comprising 304 with LRRK2-G2385R, 220 with LRRK2-R1628P, and 105 with LRRK2-A419V). Differences in symptoms between LRRK2-PD and IPD were analyzed using LCMM modeling and Cox regression analysis.
Aging Dis
October 2024
Department of Neurobiology, Neurology and National Clinical Research Center for Geriatric Disorders, Xuanwu Hospital of Capital Medical University, Beijing Institute of Geriatrics, Beijing, China.
Leucine-rich repeat kinase 2 (LRRK2)-R1628P mutation has been shown to be one of the common risk factors for Parkinson's disease (PD) in Asian populations, but the mechanism by which R1628P mutations cause neuronal dysfunction remains unknown. We used LRRK2 knock-in rats (human LRRK2-R1628P corresponds to rat LRRK2-R1627P) to investigate the R1627P mutation on function of dopaminergic neurons (DANs) and their susceptibility to the environmental toxin Lipopolysaccharide (LPS) during aging. LRRK2 rats showed no significant loss of DANs, dopamine and its metabolites, or motor dysfunction; however, spontaneous exploration and olfactory discrimination reduced, and dendritic spines of DANs showed degeneration.
View Article and Find Full Text PDFGut Microbes
December 2023
Department of Neurology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.
Alpha-synuclein (α-syn) pathology is the hallmark of Parkinson's disease (PD). The leucine-rich repeat kinase 2 () gene is a major-effect risk gene for sporadic PD (sPD). However, what environmental factors may trigger the formation of α-syn pathology in carriers of risk variants are still unknown.
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