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Huang MH, Liu YF, Nfor ON, Hsu SY, Lin WY, Chang YS, Liaw YP. Interactive Association Between Intronic Polymorphism (rs10506151) of the LRRK2 Gene and Type 2 Diabetes on Neurodegenerative Diseases. PHARMACOGENOMICS & PERSONALIZED MEDICINE 2021; 14:839-847. [PMID: 34285552 PMCID: PMC8286148 DOI: 10.2147/pgpm.s316158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 06/16/2021] [Indexed: 12/22/2022]
Abstract
Purpose We investigated the interactive effect of rs10506151 polymorphism of the Leucine-rich repeat kinase 2 (LRRK2) gene and type 2 diabetes (T2D) on neurodegenerative disease (ND) risk. Materials and Methods Data of 17, 927 participants in the Taiwan Biobank (TWB) assessed between 2008 and 2015 were linked to healthcare records in the National Health Insurance Research Database (NHIRD). The odd ratios (ORs) and 95% confidence intervals (CIs) for NDs were determined using logistic regression analysis. Results There were 145 cases with NDs, and 28.28% (n = 41) of these individuals had T2D. Associations of neurodegenerative disorders with LRRK2 rs10506151 variant and T2D were not significant. The corresponding ORs (95% CI) for NDs were 1.06 (0.75–1.49) in CA/AA compared to CC individuals and 0.93 (0.63–1.39) in those with T2D compared to non-diabetic participants. However, we found evidence of a significant interaction between rs10506151 and T2D (p = 0.0073). After stratification by genotypes of rs10506151, the OR for NDs was 0.37 (CI, 0.17–0.82) in CA/AA individuals with T2D and 1.41 (0.88–2.27) in their CC counterparts. When CA/AA individuals with T2D represented the reference group, the OR (95% CI) was 1.74 (0.81–3.73) in CC individuals with no T2D, 2.47 (CI, 1.14–5.38) in CA/AA individuals with no T2D, and 2.34 (CI, 1.07–5.11) in CC individuals with T2D. Conclusion Our data indicated that the risk of NDs was significantly lower among diabetic individuals with combined CA/AA of the LRRK2 rs10506151 variant in Taiwan.
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Affiliation(s)
- Mei-Hsuen Huang
- Department of Chinese Pharmaceutical Sciences and Chinese Medicine Resources, College of Chinese Medicine, China Medical University, Taichung, 40402, Taiwan
| | - Yu-Fan Liu
- Department of Biomedical Sciences, Chung Shan Medical University, Taichung, Taiwan.,Division of Allergy, Department of Pediatrics, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Oswald Ndi Nfor
- Department of Public Health and Institute of Public Health, Chung Shan Medical University, Taichung, 40201, Taiwan
| | - Shu-Yi Hsu
- Department of Public Health and Institute of Public Health, Chung Shan Medical University, Taichung, 40201, Taiwan
| | - Wei-Yong Lin
- Graduate Institute of Integrated Medicine, College of Chinese Medicine, China Medical University, Taichung, 40402, Taiwan.,Department of Medical Research, China Medical University Hospital, Taichung, 40447, Taiwan.,Brain Diseases Research Center, China Medical University, Taichung, 40402, Taiwan
| | - Yuan-Shiun Chang
- Department of Chinese Pharmaceutical Sciences and Chinese Medicine Resources, College of Chinese Medicine, China Medical University, Taichung, 40402, Taiwan
| | - Yung-Po Liaw
- Department of Public Health and Institute of Public Health, Chung Shan Medical University, Taichung, 40201, Taiwan.,Department of Medical Imaging, Chung Shan Medical University Hospital, Taichung City, 40201, Taiwan
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Luukkainen L, Huttula S, Väyrynen H, Helisalmi S, Kytövuori L, Haapasalo A, Hiltunen M, Remes AM, Krüger J. Mutation Analysis of the Genes Associated with Parkinson's Disease in a Finnish Cohort of Early-Onset Dementia. J Alzheimers Dis 2021; 76:955-965. [PMID: 32568194 DOI: 10.3233/jad-200069] [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: 11/15/2022]
Abstract
BACKGROUND Alzheimer's disease, frontotemporal lobar degeneration, dementia with Lewy bodies, and Parkinson's disease (PD) overlap in clinical characteristics, neuropathology, and genetics. OBJECTIVE The aim of this study was to evaluate the role of pathogenic mutations and rare variants in genes associated with PD among early-onset dementia (EOD) patients. METHODS Rare non-synonymous variants (MAF < 0.01) in ten genes (SNCA, PARK2, PARK7, LRRK2, PINK1, ATP13A2, UCHL1, HTRA2, GBA, and SNCAIP) and low-frequency (MAF < 0.05) GBA variants were screened using a targeted next-generation sequencing panel in a strictly defined cohort of 37 early-onset (age at onset (AAO) <65 years) dementia patients presenting with atypical features (e.g., myoclonia or spasticity), rapidly progressive course of the disease or with a family history of dementia. The identified variations were further screened in a larger cohort of EOD (n = 279, mean AAO 57, range 36-65) patients. RESULTS No pathogenic mutations were found, but we identified seven possible risk variants for neurodegeneration (LRRK2 p.Arg793Met, PARK2 p.Ala82Glu, SNCAIP p.Arg240Gln, SNCAIP p.Phe369Leu, GBA p.Asn409Ser, GBA p.Glu365Lys, GBA p.Thr408Met). DISCUSSION Altogether, the frequency of these variants was two times higher in the first selected cohort compared to the whole cohort. This suggests that specific rare variants in the genes associated with PD might play a role also especially in familial EOD.
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Affiliation(s)
- Laura Luukkainen
- Research Unit of Clinical Neuroscience, Neurology, University of Oulu, Oulu, Finland.,Unit of Cancer and Translational Research, Pathology, University of Oulu, Oulu, Finland.,MRC, Oulu University Hospital, Oulu, Finland
| | - Samuli Huttula
- Research Unit of Clinical Neuroscience, Neurology, University of Oulu, Oulu, Finland.,MRC, Oulu University Hospital, Oulu, Finland
| | - Henri Väyrynen
- Research Unit of Clinical Neuroscience, Neurology, University of Oulu, Oulu, Finland.,MRC, Oulu University Hospital, Oulu, Finland
| | - Seppo Helisalmi
- Institute of Clinical Medicine - Neurology, University of Eastern Finland, Kuopio, Finland
| | - Laura Kytövuori
- Research Unit of Clinical Neuroscience, Neurology, University of Oulu, Oulu, Finland.,MRC, Oulu University Hospital, Oulu, Finland
| | - Annakaisa Haapasalo
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Mikko Hiltunen
- Institute of Biomedicine, University of Eastern Finland, Kuopio, Finland
| | - Anne M Remes
- Research Unit of Clinical Neuroscience, Neurology, University of Oulu, Oulu, Finland.,MRC, Oulu University Hospital, Oulu, Finland
| | - Johanna Krüger
- Research Unit of Clinical Neuroscience, Neurology, University of Oulu, Oulu, Finland.,MRC, Oulu University Hospital, Oulu, Finland
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Henderson MX, Sengupta M, Trojanowski JQ, Lee VMY. Alzheimer's disease tau is a prominent pathology in LRRK2 Parkinson's disease. Acta Neuropathol Commun 2019; 7:183. [PMID: 31733655 PMCID: PMC6858668 DOI: 10.1186/s40478-019-0836-x] [Citation(s) in RCA: 89] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 10/28/2019] [Indexed: 12/12/2022] Open
Abstract
Mutations in leucine-rich repeat kinase 2 (LRRK2) are the most common cause of familial Parkinson's disease (PD). While the clinical presentation of LRRK2 mutation carriers is similar to that of idiopathic PD (iPD) patients, the neuropathology of LRRK2 PD is less clearly defined. Lewy bodies (LBs) composed of α-synuclein are a major feature of iPD, but are not present in all LRRK2 PD cases. There is some evidence that tau may act as a neuropathological substrate in LB-negative LRRK2 PD, but this has not been examined systematically. In the current study, we examined α-synuclein, tau, and amyloid β (Aβ) pathologies in 12 LRRK2 mutation carriers. We find that α-synuclein pathology is present in 63.6% of LRRK2 mutation carriers, but tau pathology can be found in 100% of carriers and is abundant in 91% of carriers. We further use an antibody which selectively binds Alzheimer's disease (AD)-type tau and use quantitative analysis of tau pathology to demonstrate that AD tau is the prominent type of tau present in LRRK2 mutation carriers. Abundant Aβ pathology can also be found in LRRK2 mutation carriers and is consistent with comorbid AD pathology. Finally, we assessed the association of neuropathology with clinical features in LRRK2 mutation carriers and idiopathic individuals and find that LRRK2 PD shares clinical and pathological features of idiopathic PD. The prevalence of AD-type tau pathology in LRRK2 PD is an important consideration for understanding PD pathogenesis and refining clinical trial inclusion and progression criterion.
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Affiliation(s)
- Michael X Henderson
- Department of Pathology and Laboratory Medicine, Institute on Aging and Center for Neurodegenerative Disease Research, University of Pennsylvania School of Medicine, 3600 Spruce St, 3rd Floor Maloney, Philadelphia, PA, 19104, USA
| | - Medha Sengupta
- Department of Pathology and Laboratory Medicine, Institute on Aging and Center for Neurodegenerative Disease Research, University of Pennsylvania School of Medicine, 3600 Spruce St, 3rd Floor Maloney, Philadelphia, PA, 19104, USA
| | - John Q Trojanowski
- Department of Pathology and Laboratory Medicine, Institute on Aging and Center for Neurodegenerative Disease Research, University of Pennsylvania School of Medicine, 3600 Spruce St, 3rd Floor Maloney, Philadelphia, PA, 19104, USA
| | - Virginia M Y Lee
- Department of Pathology and Laboratory Medicine, Institute on Aging and Center for Neurodegenerative Disease Research, University of Pennsylvania School of Medicine, 3600 Spruce St, 3rd Floor Maloney, Philadelphia, PA, 19104, USA.
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4
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Assessment of risk factor variants of LRRK2, MAPT, SNCA and TCEANC2 genes in Hungarian sporadic Parkinson's disease patients. Neurosci Lett 2019; 706:140-145. [PMID: 31085292 DOI: 10.1016/j.neulet.2019.05.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 05/09/2019] [Indexed: 11/21/2022]
Abstract
INTRODUCTION Parkinson's disease is the second most common neurodegenerative disease. Lifestyle, environmental effects and several genetic factors have been proposed to contribute to its development. Though the majority of PD cases do not have a family history of disease, genetic alterations are proposed to be present in 60 percent of the more common sporadic cases. OBJECTIVE The aim of this study is to evaluate the frequency of PD related specific risk variants of LRRK2, MAPT, SNCA and PARK10 genes in the Hungarian population. Out of the ten investigated polymorphisms three are proposed to have protective effect and seven are putative risk factors. METHODS For genotyping, TaqMan allelic discrimination and restriction fragment length polymorphism method was used. LRRK2 mutations were investigated among 124 sporadic PD patients and 128 healthy controls. MAPT and SNCA variant frequencies were evaluated in a group of 123 patients and 122 controls, while PARK10 variant was studied in groups of 121 patients and 113 controls. RESULTS No significant difference could be detected in the frequencies of the investigated MAPT and PARK10 variants between the studied Hungarian PD cases and controls. The minor allele of the risk factor S1647T LRRK2 variant was found to be more frequent among healthy male individuals compared to patients. Moreover, in the frequency of one of the investigated SNCA variant a significant intergroup difference was detected. The minor allele (A) of rs356186 is proposed to be protective against developing the disease. In accord with data obtained in other populations, the AA genotype was significantly more frequent among Hungarian healthy controls compared to patients. Similarly, a significant difference in genotype distribution was also found in comparison of patients with late onset disease to healthy controls, which was due to the higher frequency of AG genotype among patients. CONCLUSION The frequencies of different gene variants show great differences in populations. Assessment of the frequency of variants of PD related genes variants is important in order to uncover the pathomechanisms underlying the disease, and to identify potential therapeutic targets. This is the first comprehensive study focusing on these genetic variants in the population of East-Central European region. Our results extend the knowledge on the world wide occurrence of these polymorphisms by demonstrating the occurrence of specific alleles and absence of others in Hungarian PD patients.
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Shu L, Zhang Y, Sun Q, Pan H, Tang B. A Comprehensive Analysis of Population Differences in LRRK2 Variant Distribution in Parkinson's Disease. Front Aging Neurosci 2019; 11:13. [PMID: 30760999 PMCID: PMC6363667 DOI: 10.3389/fnagi.2019.00013] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 01/14/2019] [Indexed: 11/13/2022] Open
Abstract
Background:LRRK2 variants have been demonstrated to have distinct distributions in different populations. However, researchers have thus far chosen to focus on relatively few variants, such as R1628P, G2019S, and G2385R. We therefore investigated the relationship between common LRRK2 variants and PD risk in various populations. Methods: Using a set of strict inclusion criteria, six databases were searched, resulting in the selection of 94 articles covering 49,299 cases and 47,319 controls for final pooled analysis and frequency analysis. Subgroup analysis were done for Africans, European/West Asians, Hispanics, East Asians, and mixed populations. Statistical analysis was carried out using the Mantel-Haenszel approach to determine the relationship between common LRRK2 variants and PD risk, with the significance level set at p < 0.05. Results: In the absence of obvious heterogeneities and publication biases among the included studies, we concluded that A419V, R1441C/G/H, R1628P, G2019S, and G2385R were associated with increased PD risk (p: 0.001, 0.0004, < 0.00001, < 0.00001, and < 0.00001, respectively), while R1398H was associated with decreased risk (p: < 0.00001). In East Asian populations, A419V, R1628P, and G2385R increased risk (p: 0.001, < 0.00001, < 0.00001), while R1398H had the opposite effect (p: 0.0005). G2019S increased PD risk in both European/West Asian and mixed populations (p: < 0.00001, < 0.00001), while R1441C/G/H increased risk in European/West Asian populations only (p: 0.0004). Conclusions: We demonstrated that LRRK2 variant distribution is different among various populations, which should inform decisions regarding the development of future genetic screening strategies.
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Affiliation(s)
- Li Shu
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Yuan Zhang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Qiying Sun
- Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Changsha, China.,Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, China
| | - Hongxu Pan
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Beisha Tang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Changsha, China.,Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, China.,Parkinson's Disease Center of Beijing Institute for Brain Disorders, Beijing, China
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6
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Monfrini E, Di Fonzo A. Leucine-Rich Repeat Kinase (LRRK2) Genetics and Parkinson's Disease. ADVANCES IN NEUROBIOLOGY 2017; 14:3-30. [PMID: 28353276 DOI: 10.1007/978-3-319-49969-7_1] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The discovery of LRRK2 mutations as a cause of Parkinson's disease (PD), including the sporadic late-onset form, established the decisive role of genetics in the field of PD research. Among LRRK2 mutations, the G2019S, mostly lying in a haplotype originating from a common Middle Eastern ancestor, has been identified in different populations worldwide. The G2385R and R1628P variants represent validated risk factors for PD in Asian populations. Here, we describe in detail the origin, the present worldwide epidemiology, and the penetrance of LRRK2 mutations. Furthermore, this chapter aims to characterize other definitely/probably pathogenic mutations and risk variants of LRRK2. Finally, we provide some general guidelines for a LRRK2 genetic testing and counseling. In summary, LRRK2 discovery revolutionized the understanding of PD etiology and laid the foundation for a promising future of genetics in PD research.
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Affiliation(s)
- Edoardo Monfrini
- IRCCS Foundation Ca' Granda Ospedale Maggiore Policlinico, Dino Ferrari Center, Neuroscience Section, Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
| | - Alessio Di Fonzo
- IRCCS Foundation Ca' Granda Ospedale Maggiore Policlinico, Dino Ferrari Center, Neuroscience Section, Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy.
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7
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Kalinderi K, Bostantjopoulou S, Fidani L. The genetic background of Parkinson's disease: current progress and future prospects. Acta Neurol Scand 2016; 134:314-326. [PMID: 26869347 DOI: 10.1111/ane.12563] [Citation(s) in RCA: 170] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/11/2016] [Indexed: 12/17/2022]
Abstract
Almost two decades of genetic research in Parkinson's disease (PD) have remarkably increased our knowledge regarding the genetic basis of PD with numerous genes and genetic loci having been found to cause familial PD or affect the risk for PD. Approximately 5-10% of PD patients have monogenic forms of the disease, exhibiting a classical Mendelian type of inheritance, however, the majority PD cases are sporadic, probably caused by a combination of genetic and environmental risk factors. Nowadays, six genes, alpha synuclein, LRRK2, VPS35, Parkin, PINK1 and DJ-1, have definitely been associated with an autosomal dominant or recessive PD mode of inheritance. The advent of genome-wide association studies (GWAS) and the implementation of new technologies, like next generation sequencing (NGS) and exome sequencing has undoubtedly greatly aided the identification on novel risk variants for sporadic PD. In this review, we will summarize the current progress and future prospects in the field of PD genetics.
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Affiliation(s)
- K. Kalinderi
- Department of General Biology; Medical School; Aristotle University of Thessaloniki; Thessaloniki Greece
| | - S. Bostantjopoulou
- 3rd University Department of Neurology; G. Papanikolaou Hospital; Aristotle University of Thessaloniki; Thessaloniki Greece
| | - L. Fidani
- Department of General Biology; Medical School; Aristotle University of Thessaloniki; Thessaloniki Greece
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LRRK2 G2385R and R1628P mutations are associated with an increased risk of Parkinson's disease in the Malaysian population. BIOMED RESEARCH INTERNATIONAL 2014; 2014:867321. [PMID: 25243190 PMCID: PMC4163406 DOI: 10.1155/2014/867321] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Accepted: 07/24/2014] [Indexed: 11/18/2022]
Abstract
The LRRK2 gene has been associated with both familial and sporadic forms of Parkinson's disease (PD). The G2019S variant is commonly found in North African Arab and Caucasian PD patients, but this locus is monomorphic in Asians. The G2385R and R1628P variants are associated with a higher risk of developing PD in certain Asian populations but have not been studied in the Malaysian population. Therefore, we screened the G2385R and R1628P variants in 1,202 Malaysian subjects consisting of 695 cases and 507 controls. The G2385R and R1628P variants were associated with a 2.2-fold (P = 0.019) and 1.2-fold (P = 0.054) increased risk of PD, respectively. Our data concur with other reported findings in Chinese, Taiwanese, Singaporean, and Korean studies.
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9
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YAN HUIRU, MA QINGPING, YANG XINLING, WANG YULING, YAO YANI, LI HONGJUAN. Correlation between LRRK2 gene G2385R polymorphisms and Parkinson’s disease. Mol Med Rep 2012; 6:879-83. [DOI: 10.3892/mmr.2012.1008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2012] [Accepted: 07/12/2012] [Indexed: 11/05/2022] Open
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10
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Yao LY, Guo JF, Wang L, Yu RH, Sun QY, Pan Q, Xia K, Tang BS, Shen L. LRRK2 Pro755Leu variant in ethnic Chinese population with Parkinson's disease. Neurosci Lett 2011; 495:35-8. [PMID: 21406209 DOI: 10.1016/j.neulet.2011.03.030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2010] [Revised: 03/02/2011] [Accepted: 03/08/2011] [Indexed: 11/28/2022]
Abstract
Parkinson's disease (PD) is a common neurodegenerative disease resulting from complex interaction involving genetic and environmental risk factors on background of aging. In terms of genetic risk factors, recent studies provided a growing number of evidence for the idea that certain polymorphisms in familiar Parkinsonism genes may contribute to risk for sporadic PD in populations of specific ethnic backgrounds. To address this issue, a case-control study was conducted to determine the prevalence of LRRK2 Pro755Leu variant in 401 patients with sporadic PD and 398 unrelated healthy controls in Han population from mainland China. Heterozygous LRRK2 Pro755Leu variant was found in four patients and two healthy controls, but no statistical differences in genotypic or allelic frequencies between PD and control groups (genotype: P=0.686; allele: P=0.687) were detected. Furthermore, to evaluate its role in ethnic Chinese population, a meta-analysis was performed on Pro755Leu in population of Chinese ancestry throughout Asia. And it was detected at a similar frequency in PD and control cohort (Z=0.48, P=0.63, odds ratio=1.44, 95% CI: 0.32-6.40). Given these findings, it was quite reasonable to suppose that LRRK2 Pro755Leu variant rarely increased risk for PD in ethnic Chinese population in Asia.
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Affiliation(s)
- Ling-Yan Yao
- Department of Neurology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan 410008, PR China
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Covy JP, Yuan W, Waxman EA, Hurtig HI, Van Deerlin VM, Giasson BI. Clinical and pathological characteristics of patients with leucine-rich repeat kinase-2 mutations. Mov Disord 2009; 24:32-9. [PMID: 19006185 DOI: 10.1002/mds.22096] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Mutations in LRRK2 are the single most common known cause of Parkinson's disease (PD). Two new PD patients with LRRK2 mutation were identified from a cohort with extensive postmortem assessment. One of these patients harbors the R793M mutation and presented with the typical clinical and pathological features of PD. A novel L1165P mutation was identified in a second patient. This patient had the classical and pathological features of PD, but additionally developed severe neuropsychological symptoms and dementia associated with abundant neurofibrillary tangles in the hippocampal formation; features consistent with a secondary diagnosis of tangle-predominant dementia. alpha-Synuclein-containing pathological inclusions in these patients also were highly phosphorylated at Ser-129, similar to other patients with idiopathic PD. These two PD patients also were characterized by the presence of occasional cytoplasmic TDP-43 inclusions in the temporal cortex, a finding that was not observed in three other patients with the G2019S mutation in LRRK2. These findings extend the clinical and pathological features that may be associated with LRRK2 mutations.
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Affiliation(s)
- Jason P Covy
- Department of Pharmacology, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6084, USA
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12
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Cao L, Zhang T, Xiao Q, Wang Y, Bai L, Lu GQ, Ma JF, Zhang J, Ding JQ, Chen SD. The prevalence of LRRK2 Gly2385Arg variant in Chinese Han population with Parkinson's disease. Mov Disord 2007; 22:2439-43. [DOI: 10.1002/mds.21763] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Hurley MJ, Patel PH, Jackson MJ, Smith LA, Rose S, Jenner P. Striatal leucine-rich repeat kinase 2 mRNA is increased in 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine-lesioned common marmosets (Callithrix jacchus) with L-3, 4-dihydroxyphenylalanine methyl ester-induced dyskinesia. Eur J Neurosci 2007; 26:171-7. [PMID: 17614947 DOI: 10.1111/j.1460-9568.2007.05638.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The level of leucine-rich repeat kinase 2 (Lrrk2) mRNA expression was measured by reverse transcription-polymerase chain reaction in anterior striatum from normal and 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-treated common marmosets (Callithrix jacchus) that had L-3,4-dihydroxyphenylalanine methyl ester (L-DOPA)-induced dyskinesia. The level of striatal Lrrk2 mRNA was increased in MPTP-treated common marmosets that had L-DOPA-induced dyskinesia compared with normal animals that did not receive l-DOPA. Marmosets that exhibited higher levels of dyskinesia had the greatest increase in striatal Lrrk2 mRNA. Lrrk2 mRNA expression was also measured in human striatum and substantia nigra from control subjects and patients dying with Parkinson's disease. In contrast to marmoset tissue, no alteration in Lrrk2 mRNA expression was found in parkinsonian human brain. However, the brain was from patients who had an overall low level of dyskinesia. The correlation between striatal Lrrk2 mRNA levels in MPTP-treated common marmoset striatum and L-DOPA-induced dyskinesia indicates that LRRK2 may have a role in the molecular alterations that cause L-DOPA-induced dyskinesia.
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Affiliation(s)
- M J Hurley
- Neurodegenerative Diseases Research Group, Pharmaceutical Sciences Research Division, School of Biomedical and Health Sciences, King's College, London SE1 1UL, UK.
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