Movement Disorders (revue)

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Melanized nigral neuronal numbers in nigerian and british individuals

Identifieur interne : 001285 ( PascalFrancis/Curation ); précédent : 001284; suivant : 001286

Melanized nigral neuronal numbers in nigerian and british individuals

Auteurs : Uday B. Muthane [Inde] ; Yasha T. Chickabasaviah [Inde] ; Jasmine Henderson [Australie] ; Ann E. Kingsbury [Royaume-Uni] ; Linda Kilford [Royaume-Uni] ; Susarla K. Shankar [Inde] ; D. K. Subbakrishna [Inde] ; Andrew J. Lees [Royaume-Uni]

Source :

RBID : Pascal:06-0435102

Descripteurs français

English descriptors

Abstract

The role of genetic and environmental factors in etiopathogenesis of Parkinson's disease (PD) is debated. The prevalence of PD is higher among white than nonwhite populations, yet it is five times higher in nonwhites living in the United States than in Nigeria. We compare counts of melanized nigral neurons between neurologically normal Nigerians and British brains. Neuronal counts were estimated in an age-matched sample of 23 Nigerian and 7 British brains from neurologically normal individuals who had no Lewy bodies and Lewy neurites on α-synuclein immunostaining. Two investigators blind to age and ethnicity performed counts of melanized neurons in a single 7-μm hemisections showing the substantia nigra pars compacta. No significant difference exits in the number of neurons between the Nigerian and the British subjects (P = 0.1, NS). Differences in melanized nigral neuronal numbers may not explain differences in the prevalence of PD between white and nonwhite populations, suggesting factors other than neuronal numbers contribute to differential susceptibility of black vs. white races to PD.
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A11 01  1    @1 MUTHANE (Uday B.)
A11 02  1    @1 CHICKABASAVIAH (Yasha T.)
A11 03  1    @1 HENDERSON (Jasmine)
A11 04  1    @1 KINGSBURY (Ann E.)
A11 05  1    @1 KILFORD (Linda)
A11 06  1    @1 SHANKAR (Susarla K.)
A11 07  1    @1 SUBBAKRISHNA (D. K.)
A11 08  1    @1 LEES (Andrew J.)
A14 01      @1 Department of Neurology, National Institute of Mental Health and Neurosciences @2 Bangalore @3 IND @Z 1 aut.
A14 02      @1 Department of Neuropathology, National Institute of Mental Health and Neurosciences @2 Bangalore @3 IND @Z 2 aut. @Z 6 aut.
A14 03      @1 Prince of Wales Medical Research Institute @2 Randwick, New South Wales @3 AUS @Z 3 aut.
A14 04      @1 Queen Square Brain Bank for Neurological Disorders, Institute of Neurology @2 London @3 GBR @Z 4 aut. @Z 5 aut. @Z 8 aut.
A14 05      @1 Department of Biostatistics, National Institute of Mental Health and Neurosciences @2 Bangalore @3 IND @Z 7 aut.
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C01 01    ENG  @0 The role of genetic and environmental factors in etiopathogenesis of Parkinson's disease (PD) is debated. The prevalence of PD is higher among white than nonwhite populations, yet it is five times higher in nonwhites living in the United States than in Nigeria. We compare counts of melanized nigral neurons between neurologically normal Nigerians and British brains. Neuronal counts were estimated in an age-matched sample of 23 Nigerian and 7 British brains from neurologically normal individuals who had no Lewy bodies and Lewy neurites on α-synuclein immunostaining. Two investigators blind to age and ethnicity performed counts of melanized neurons in a single 7-μm hemisections showing the substantia nigra pars compacta. No significant difference exits in the number of neurons between the Nigerian and the British subjects (P = 0.1, NS). Differences in melanized nigral neuronal numbers may not explain differences in the prevalence of PD between white and nonwhite populations, suggesting factors other than neuronal numbers contribute to differential susceptibility of black vs. white races to PD.
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C07 02  X  SPA  @0 Sistema nervioso central @5 38
N21       @1 289
N44 01      @1 OTO
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<div type="abstract" xml:lang="en">The role of genetic and environmental factors in etiopathogenesis of Parkinson's disease (PD) is debated. The prevalence of PD is higher among white than nonwhite populations, yet it is five times higher in nonwhites living in the United States than in Nigeria. We compare counts of melanized nigral neurons between neurologically normal Nigerians and British brains. Neuronal counts were estimated in an age-matched sample of 23 Nigerian and 7 British brains from neurologically normal individuals who had no Lewy bodies and Lewy neurites on α-synuclein immunostaining. Two investigators blind to age and ethnicity performed counts of melanized neurons in a single 7-μm hemisections showing the substantia nigra pars compacta. No significant difference exits in the number of neurons between the Nigerian and the British subjects (P = 0.1, NS). Differences in melanized nigral neuronal numbers may not explain differences in the prevalence of PD between white and nonwhite populations, suggesting factors other than neuronal numbers contribute to differential susceptibility of black vs. white races to PD.</div>
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