Dietary intake of folate, vitamin B6, vitamin B12 and riboflavin and risk of Parkinson's disease: a case–control study in Japan

Increased homocysteine levels might accelerate dopaminergic cell death in Parkinson's disease (PD) through neurotoxic effects; thus, increasing intake of B vitamins involved in the regulation of homocysteine metabolism might decrease the risk of PD through decreasing plasma homocysteine. However, epidemiological evidence for the association of dietary B vitamins with PD is sparse, particularly in non-Western populations. We conducted a hospital-based case–control study in Japan to examine associations between dietary intake of folate, vitamin B6, vitamin B12 and riboflavin and the risk of PD. Patients with PD diagnosed using the UK PD Society Brain Bank criteria (n 249) and controls without neurodegenerative diseases (n 368) were recruited. Dietary intake during the preceding month was assessed at the time of study recruitment using a validated, self-administered, semi-quantitative, comprehensive diet history questionnaire. After adjustment for potential dietary and non-dietary confounding factors, intake of folate, vitamin B12 and riboflavin was not associated with the risk of PD (P for trend = 0·87, 0·70 and 0·11, respectively). However, low intake of vitamin B6 was associated with an increased risk of PD, independent of potential dietary and non-dietary confounders. Multivariate OR (95 % CI) for PD in the first, second, third and fourth quartiles of vitamin B6 were 1 (reference), 0·56 (0·33, 0·94), 0·69 (0·38, 1·25) and 0·48 (0·23, 0·99), respectively (P for trend = 0·10). In conclusion, in the present case–control study in Japan, low intake of vitamin B6, but not of folate, vitamin B12 or riboflavin, was independently associated with an increased risk of PD.

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Tamoxifen usage correlates with increased risk of Parkinson’s disease in older women with breast cancer: a case–control study in Taiwan

European Journal of Clinical Pharmacology ◽

10.1007/s00228-017-2341-0 ◽

2017 ◽

Vol 74 (1) ◽

pp. 99-107 ◽

Cited By ~ 11

Author(s):

Hsien-Feng Lin ◽

Kuan-Fu Liao ◽

Ching-Mei Chang ◽

Cheng-Li Lin ◽

Shih-Wei Lai

Keyword(s):

Breast Cancer ◽

Parkinson’S Disease ◽

Parkinson's Disease ◽

Older Women ◽

Case Control Study ◽

Case Control ◽

Increased Risk ◽

Control Study

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Dietary intake and olfactory function in patients with newly diagnosed Parkinson's disease: a case-control study

Nutritional Neuroscience ◽

10.1179/174313211x12966635733312 ◽

2011 ◽

Vol 14 (1) ◽

pp. 25-31 ◽

Cited By ~ 39

Author(s):

Emma Ådén ◽

Maine Carlsson ◽

Eric Poortvliet ◽

Hans Stenlund ◽

Jan Linder ◽

...

Keyword(s):

Parkinson’S Disease ◽

Parkinson's Disease ◽

Dietary Intake ◽

Case Control Study ◽

Case Control ◽

Olfactory Function ◽

Newly Diagnosed ◽

Control Study

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Dietary intake of metals and risk of Parkinson's disease: A case-control study in Japan

Journal of the Neurological Sciences ◽

10.1016/j.jns.2011.03.035 ◽

2011 ◽

Vol 306 (1-2) ◽

pp. 98-102 ◽

Cited By ~ 45

Author(s):

Yoshihiro Miyake ◽

Keiko Tanaka ◽

Wakaba Fukushima ◽

Satoshi Sasaki ◽

Chikako Kiyohara ◽

...

Keyword(s):

Parkinson’S Disease ◽

Parkinson's Disease ◽

Dietary Intake ◽

Case Control Study ◽

Case Control ◽

Control Study

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Dietary intake of antioxidant vitamins and risk of Parkinson’s disease: a case-control study in Japan

European Journal of Neurology ◽

10.1111/j.1468-1331.2010.03088.x ◽

2010 ◽

Vol 18 (1) ◽

pp. 106-113 ◽

Cited By ~ 43

Author(s):

Y. Miyake ◽

W. Fukushima ◽

K. Tanaka ◽

S. Sasaki ◽

C. Kiyohara ◽

...

Keyword(s):

Parkinson’S Disease ◽

Parkinson's Disease ◽

Dietary Intake ◽

Case Control Study ◽

Case Control ◽

Antioxidant Vitamins ◽

Control Study

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Lifestyle Factors and Parkinson’s Disease Risk in a Rural New England Case-Control Study

Parkinson s Disease ◽

10.1155/2021/5541760 ◽

2021 ◽

Vol 2021 ◽

pp. 1-7

Author(s):

Angeline S. Andrew ◽

Faith L. Anderson ◽

Stephen L. Lee ◽

Katharine M. Von Herrmann ◽

Matthew C. Havrda

Keyword(s):

Risk Factors ◽

Parkinson’S Disease ◽

Parkinson's Disease ◽

Head Trauma ◽

Environmental Risk ◽

Case Control Study ◽

Case Control ◽

Environmental Risk Factors ◽

Increased Risk ◽

Control Study

Introduction. Parkinson’s disease (PD) is an age-related neurodegenerative disease likely caused by complex interactions between genetic and environmental risk factors. Exposure to pesticides, toxic metals, solvents, and history of traumatic brain injury have been implicated as environmental risk factors for PD, underscoring the importance of identifying risk factors associated with PD across different communities. Methods. We conducted a questionnaire-based case-control study in a rural area on the New Hampshire/Vermont border, enrolling PD patients and age- and sex-matched controls from the general population between 2017 and 2020. We assessed frequent participation in a variety of recreational and occupational activities and surveyed potential chemical exposures. Results. Suffering from “head trauma or a concussion” prior to diagnosis was associated with a fourfold increased risk of PD. Adjustment for head trauma negated any risk of participation in “strenuous athletic activities.” We observed a 2.7-fold increased risk of PD associated with activities involving lead (adjusted p = 0.038 ). Conclusion. Implicating these factors in PD risk favors public health efforts in exposure mitigation while also motivating future work mechanisms and intervention opportunities.

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Dental Scaling Decreases the Risk of Parkinson’s Disease: A Nationwide Population-Based Nested Case-Control Study

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph15081587 ◽

2018 ◽

Vol 15 (8) ◽

pp. 1587 ◽

Cited By ~ 13

Author(s):

Chang-Kai Chen ◽

Jing-Yang Huang ◽

Yung-Tsan Wu ◽

Yu-Chao Chang

Keyword(s):

Parkinson’S Disease ◽

Parkinson's Disease ◽

Protective Effect ◽

Case Control Study ◽

Case Control ◽

Research Database ◽

Dental Scaling ◽

Increased Risk ◽

Nested Case Control ◽

Control Study

The protective effect of dental scaling in Parkinson’s disease (PD) remains inconclusive. The aim of this study was to analyze the association between dental scaling and the development of PD. A retrospective nested case-control study was performed using the National Health Insurance Research Database of Taiwan. The authors identified 4765 patients with newly diagnosed PD from 2005 to 2013 and 19,060 individuals without PD by matching sex, age, and index year. In subgroup 1, with individuals aged 40–69 years, individuals without periodontal inflammatory disease (PID) showed a protective effect of dental scaling against PD development, especially for dental scaling over five consecutive years (adjusted odds ratio = 0.204, 95% CI = 0.047–0.886, p = 0.0399). In general, the protective effect of dental scaling showed greater benefit for individuals with PID than for those without PID, regardless of whether dental scaling was performed for five consecutive years. In subgroup 2, with patients aged ≥70 years, the discontinued (not five consecutive years) scaling showed increased risk of PD. This was the first study to show that patients without PID who underwent dental scaling over five consecutive years had a significantly lower risk of developing PD. These findings emphasize the value of early and consecutive dental scaling to prevent the development of PD.

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Study of cognitive impairment and genetic polymorphism of SLC41A1 (rs11240569 allele) in Parkinson’s disease in Upper Egypt: case-control study

The Egyptian Journal of Neurology Psychiatry and Neurosurgery ◽

10.1186/s41983-021-00341-0 ◽

2021 ◽

Vol 57 (1) ◽

Author(s):

Hamdy N. El-Tallawy ◽

Tahia H. Saleem ◽

Wafaa M. Farghaly ◽

Heba Mohamed Saad Eldien ◽

Ashraf Khodaery ◽

...

Keyword(s):

Parkinson’S Disease ◽

Parkinson's Disease ◽

Cognitive Impairment ◽

Case Control Study ◽

Case Control ◽

Control Group ◽

Motor Symptoms ◽

And Control ◽

Non Motor Symptoms ◽

Control Study

Abstract Background Parkinson’s disease is one of the neurodegenerative disorders that is caused by genetic and environmental factors or interaction between them. Solute carrier family 41 member 1 within the PARK16 locus has been reported to be associated with Parkinson’s disease. Cognitive impairment is one of the non-motor symptoms that is considered a challenge in Parkinson’s disease patients. This study aimed to investigate the association of rs11240569 polymorphism; a synonymous coding variant in SLC41A1 in Parkinson’s disease patients in addition to the assessment of cognitive impairment in those patients. Results In a case -control study, rs11240569 single nucleotide polymorphisms in SLC41A1, genes were genotyped in 48 Parkinson’s disease patients and 48 controls. Motor and non-motor performance in Parkinson's disease patients were assessed by using the Movement Disorder Society-Sponsored Revision of the Unified Parkinson’s Disease Rating Scale (MDS-UPDRS). The genotype and allele frequencies were compared between the two groups and revealed no significant differences between case and control groups for rs11240569 in SLC41A1 gene with P value .523 and .54, respectively. Cognition was evaluated and showed the mean ± standard deviation (SD) of WAIS score of PD patients 80.4 ± 9.13 and the range was from 61 to 105, in addition to MMSE that showed mean ± SD 21.96 ± 3.8. Conclusion Genetic testing of the present study showed that rs11240569 polymorphism of SLC41A1 gene has no significant differences in distributions of alleles and genotypes between cases and control group, in addition to cognitive impairment that is present in a large proportion of PD patients and in addition to the strong correlation between cognitive impairment and motor and non-motor symptoms progression.

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Irritable bowel syndrome and Parkinson’s disease risk: register-based studies

npj Parkinson s Disease ◽

10.1038/s41531-020-00145-8 ◽

2021 ◽

Vol 7 (1) ◽

Author(s):

Bojing Liu ◽

Arvid Sjölander ◽

Nancy L. Pedersen ◽

Jonas F. Ludvigsson ◽

Honglei Chen ◽

...

Keyword(s):

Parkinson’S Disease ◽

Irritable Bowel Syndrome ◽

Case Control Study ◽

Case Control ◽

Twin Registry ◽

Increased Risk ◽

Irritable Bowel ◽

Nested Case Control ◽

Control Study ◽

Swedish Twin Registry

AbstractTo examine whether irritable bowel syndrome (IBS) was related to the future risk of Parkinson’s disease (PD), we conducted a nested case-control study in the Swedish total population including 56,564 PD cases identified from the Swedish Patient Register and 30 controls per case individually matched by sex and year of birth. Odds ratios (ORs) with 95% confidence intervals (CIs) for having a prior diagnosis of IBS were estimated using conditional logistic regression. We furthermore conducted a cohort study using the Swedish Twin Registry following 3046 IBS patients identified by self-reported abdominal symptoms and 41,179 non-IBS individuals. Through Cox proportional hazard models, we estimated hazard ratios (HRs) and 95% CIs for PD risk. In the nested case-control study, 253 (0.4%) PD cases and 5204 (0.3%) controls had a previous IBS diagnosis. IBS diagnosis was associated with a 44% higher risk of PD (OR = 1.44, 95% CI 1.27–1.63). Temporal relationship analyses showed 53% and 38% increased risk of PD more than 5 and 10 years after IBS diagnosis, respectively. In the cohort analysis based on the Swedish Twin Registry, there was no statistically significantly increased risk of PD related to IBS (HR = 1.25, 95% CI = 0.87–1.81). Our results suggest a higher risk of PD diagnosis after IBS. These results provide additional evidence supporting the importance of the gut–brain axis in PD.

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