Abstract
Background: An apparent excess of teachers and healthcare workers among the Parkinson’s disease patients of a large tertiary care movement disorders clinic suggested the hypothesis that high exposure to viral (or other) respiratory infections in these occupations might be a risk factor for Parkinson’s disease.
Methods: A case-control study of the association between occupation and Parkinson’s disease was conducted. Cases (414) were all Parkinson’s disease patients seen at the University of British Columbia Hospital Movement Disorders Clinic between 1986 and 1993, residing in Greater Vancouver, and under 65 in 1991. Controls (6,659) were randomly selected from the 1991 Canadian Census.
Findings: Parkinson’s disease was associated with teaching (OR 2.50, 95% CI 1.67–3.74) and occupation in healthcare services (OR 2.07, 95% CI 1.34–3.20), but there were several other substantial associations, both positive and negative.
Interpretation: While referral bias cannot be ruled out, the authors find the consistency of the overall pattern of associations with the respiratory infection hypothesis striking.
Résumé
Contexte: un nombre démesuré d’enseignants et de travailleurs des soins de santé, parmi les personnes atteintes de la maladie de Parkinson soignées dans une grande clinique de soins tertiaires spécialisée dans les troubles moteurs, a amené à formuler l’hypothèse voulant qu’une forte exposition aux infections respiratoires d’origine virale ou autre dans ces professions pouvait constituer un facteur de risque de contraction de la maladie de Parkinson.
Méthode: Une étude cas-témoins de la corrélation existant entre la profession et la maladie de Parkinson a été effectuée. Tous les cas (414) étaient des malades atteints de la maladie de Parkinson soignés à la clinique spécialisée dans les troubles moteurs de l’hôpital de l’université de la Colombie-Britannique entre 1986 et 1993, résidant dans l’agglomération de Vancouver, et âgés de moins de 65 ans en 1991. Les témoins (6 659) avaient été choisis de façon aléatoire à partir du Recensement de la population canadienne de 1991.
Résultats: la maladie de Parkinson a été cor-relée à l’enseignement (RO 2,50, 95 % IC 1,67 - 3,74) et aux professions du secteur de la santé (RO 2,07, 95 % IC 1,34 - 3,20), mais on a constaté plusieurs autres corrélations importantes, tant positives que négatives.
Interprétation: bien que toute subjectivité ne puisse être écartée, les auteurs ont été frappés par la corrélation générale avec l’infection respiratoire.
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References
Schoenberg BS, Osuntokun BO, Adeuja AOG, et al. Comparison of the prevalence of Parkinson’s disease in black populations in the rural United States and in rural Nigeria: Door-to-door community studies. Neurology 1988;38:645–46.
Hornykiewicz O. Biogenic amines in the central nervous system. In: Vinken PJ, Bruyn GW (Eds.), Handbook of Clinical Neurology, Vol 29 “Metabolic and deficiency diseases of the nervous system”, Part III (Ed. Klawans HL), North Holland, Amsterdam, 1977;29:459–83.
Kessler II. Parkinson’s disease: Perspective of epidemiology and pathogenesis. Prev Med 1973;2:88–105.
Hubble JP, Cao T, Hassanein RES, et al. Risk factors for Parkinson’s disease. Neurology 1993;43:1693–97.
Seidler A, Hellenbrand W, Robra B-P, Vieregge P. Possible environmental, occupational, and other etiologic factors for Parkinson’s disease: A case-control study in Germany. Neurology 1996;46:1275–84.
Semchuk KM, Love EJ, Lee RG. Parkinson’s disease and exposure to agricultural work and pesticide chemicals. Neurology 1992;42:1328–35.
Marder K, Tang M-X, Mejia H, et al. Risk of Parkinson’s disease among first-degree relatives: A community based study. Neurology 1996;47:155–60.
Golbe LI, Di Iorio G, Sanges G, et al. Clinical genetic analysis of Parkinson’s disease in the Contursi Kindred. Ann Neurol 1996;40:767–75.
Bonifati V, Fabrizio E, Vanacore N, et al. Familial Parkinson’s disease: A clinical genetic analysis. Can J Neurol Sci 1995;22:272–79.
Payami H, Larsen K, Bernard S, Nutt J. Increased risk of Parkinson’s disease in parents and siblings of patients. Ann Neurol 1994;36:659–61.
Waters CH, Miller CA. Autosomal dominant Lewy Body Parkinsonism in a four-generation family. Ann Neurol 1994;35:59–64.
Golbe LI, Lazzarini AM, Schwarz KO, et al. Autosomal dominant Parkinsonism with benign course and typical Lewy-body pathology. Neurology 1993;43:2222–27.
Wszolek ZK, Pfeiffer R, Fulgham JR, et al. Western Nebraska family (family D) with autosomal dominant parkinsonism. Neurology 1995;45:502–5.
Markopoulou K, Wszolek ZK, Pfeiffer RF. A Greek-American kindred with autosomal dominant, levodopa-responsive parkinsonism and anticipation. Ann Neurol 1995;39:355–56.
Polymeropoulos MH, Higgins JJ, Golbe LI, et al. Mapping of a gene for Parkinson’s disease to chromosome 4q21-q23. Science 1996;274(5290):1197–99.
Polymeropoulos MH, Lavedan C, Leray E, et al. Mutation in the alpha-synuclein gene identified in families with Parkinson’s disease. Science 1997;276:2045–47.
Muenter MD, Howard FM, Okazaki H, et al. A familial parkinson-dementia syndrome. Neurology 1986;36 (Suppl 1):115.
Isozumi K, Kaplan J, Deng H-X, et al. A large Sasketchewan kindred with Lewy Body Parkinson’s disease: Exclusion of 4q21-23, Yp-pseudoautosomal region and dopamine beta-hydroxylase locus. Can J Neurol Sci 1997;Suppl(1):S23.
Duvoisin RC, Eldridge R, Williams A, et al. Twin study of Parkinson’s disease. Neurology 1981;31:77–80.
Ward CD, Duvoisin RC, Ince SE, et al. Parkinson’s disease in 65 pairs of twins and in a set of quadruplets. Neurology 1983;33:815–24.
Marttila RJ, Kaprio J, Koskenvuo M, Rinne UK. Parkinson’s disease in nationwide twin cohort. Neurology 1988;38:1217–19.
Tanner CM, Ottman R, Ellenberg JH, et al. Parkinson’s disease concordance in early male monozygotic and dizygotic twins. Neurology 1997; (Abstract).
Barbeau A, Roy M, Bernier G, et al. Ecogenetics of Parkinson’s disease: Prevalence and environmental aspects in rural areas. Can J Neurol Sci 1987;14:36–41.
Rybicki BA, Johnson CC, Uman J, Gorell JM. Parkinson’s disease mortality and the industrial use of heavy metals in Michigan. Mov Disord 1993;8:87–92.
Rajput AH, Uitti RJ, Stern W, Laverty W. Early onset Parkinson’s disease in Saskatchewan. Can J Neurol Sci 1986;13:312–16.
Calne DB, McGeer E, Eisen A, Spencer P. Alzheimer’s disease, Parkinson’s disease and motor neuron disease: Abiotrophic interaction between aging and environment? Lancet 1986;8515:1067–70.
Shoji H, Watanabe M, Itoh S, et al. Japanese encephalitis and parkinsonism. J Neurol 1993;240:59–60.
Mulder DW, Parrott M, Thaler M. Sequelae of western equine encephalitis. Neurology 1951;1:318–27.
Poser CM, Hungley CJ, Poland JD. Para-encephalitic parkinsonism. Acta Neurol Scandinav 1969;45:199–215.
Kim JS, Choi IS, Lee MC. Reversible parkinson-ism and dystonia following probable mycoplasma pneumoniae infection. Mov Disord 1995;10:510–12.
Isgreen WP, Chutorian AM, Fahn S. Sequential parkinsonisms and chorea following “mild” influenza. Trans Am Neurol Assoc 1976;101:56–69.
Takahashi M, Yamada T, Nakajima S, et al. The Substantia nigra is a major target for neurovirulent influenza A virus. J Exp Med 1995;181:2161–69.
Lin SK, Lu CS, Vingerhoets F, et al. Isolated involvement of substantia nigra in acute transient parkinsonism: MRI and PET observations. Parkinsonism & Related Disorders 1995;1(2):67–72.
Schulte PA, Burnett CA, Boeniger MF, Johnson J. Neurodegenerative diseases: Occupational occurrence and potential risk factors, 1982 through 1991. Am J Public Health 1996;86:1281–88.
Hertzman C, Wiens M, Snow B, et al. A case-control study of Parkinson’s disease in a horticultural region of British Columbia. Movement Disorders 1994;9:69–75.
Rajput AH, Rozdilsky B, Rajput A. Accuracy of clinical diagnosis in parkinsonism—a prospective study. Can J Neurol Sci 1991;18:275–78.
Hughes AJ, Ben-Shlomo Y, Daniel SE, Lees AJ. What features improve the accuracy of clinical diagnosis in Parkinson’s disease: A clinicopatho-logic study. Neurology 1992;42:1142–46. [Erratum in Neurology 1992;42:1436]
Calne DB, Snow BJ, Lee C. Criteria for diagnosing Parkinson’s disease. Ann Neurol 1992;32 Suppl:S125–127.
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Supported in part by The Pacific Parkinson’s Research Institute
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Tsui, J.K.C., Calne, D.B., Wang, Y. et al. Occupational Risk Factors in Parkinson’s Disease. Can J Public Health 90, 334–337 (1999). https://doi.org/10.1007/BF03404523
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DOI: https://doi.org/10.1007/BF03404523