Journal of Movement Disorders

Original Articles

Clinical Features Indicating Nigrostriatal Dopaminergic Degeneration in Drug-Induced Parkinsonism: Seung Ha Lee, Han Kyeol Kim, Young Gun Lee, Chul Hyoung Lyoo, Sung Jun Ahn, Myung Sik Lee; J Mov Disord. 2017;10(1):35-39. Published online December 27, 2016; DOI: https://doi.org/10.14802/jmd.16045

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Objective
Patients with drug-induced parkinsonism (DIP) may have nigrostriatal dopaminergic degeneration. We studied the clinical features that may indicate nigrostriatal dopaminergic degeneration in patients with DIP.
Methods
Forty-one DIP patients were classified into normal and abnormal [¹⁸F] FP-CIT scan groups. Differences in 32 clinical features and drug withdrawal effects were studied.
Results
Twenty-eight patients had normal (Group I) and 13 patients had abnormal (Group II) scans. Eight patients of Group I, but none of Group II, had taken calcium channel blockers (p = 0.040). Three patients of Group I and six of Group II had hyposmia (p = 0.018). After drug withdrawal, Group I showed greater improvement in Unified Parkinson’s Disease Rating Scale total motor scores and subscores for bradykinesia and tremors than Group II. Only hyposmia was an independent factor associated with abnormal scans, but it had suboptimal sensitivity.
Conclusion
None of the clinical features were practical indicators of nigrostriatal dopaminergic degeneration in patients with DIP.

Citations

Citations to this article as recorded by

Comparative Olfactory Profiles in Parkinson’s Disease and Drug-Induced Parkinsonism
In Hee Kwak, Young Eun Kim, Suk Yun Kang, Joong Seob Lee, Jeongjae Lee, Min Seung Kim, Dong A Yea, Hyeo-il Ma
Journal of Movement Disorders.2024; 17(1): 64. CrossRef
Retinal Thickness and Its Interocular Asymmetry Between Parkinson’s Disease and Drug-Induced Parkinsonism
Wool Suh, Sung Uk Baek, Jungsu S. Oh, Seung Yeon Seo, Jae Seung Kim, You Mie Han, Min Seung Kim, Suk Yun Kang
Journal of Korean Medical Science.2023;[Epub] CrossRef
Gait abnormalities and non-motor symptoms predict abnormal dopaminergic imaging in presumed drug-induced Parkinsonism
Whitley W. Aamodt, Jacob G. Dubroff, Gang Cheng, Betty Taylor, Stephanie Wood, John E. Duda, James F. Morley
npj Parkinson's Disease.2022;[Epub] CrossRef
Acute dopamine receptor blockade in substantia nigra pars reticulata: a possible model for drug-induced Parkinsonism
Verónica Alejandra Cáceres-Chávez, Ricardo Hernández-Martínez, Jesús Pérez-Ortega, Marco Arieli Herrera-Valdez, Jose J. Aceves, Elvira Galarraga, José Bargas
Journal of Neurophysiology.2018; 120(6): 2922. CrossRef
Neuroimaging in Parkinson's disease: focus on substantia nigra and nigro-striatal projection
Daniela Frosini, Mirco Cosottini, Duccio Volterrani, Roberto Ceravolo
Current Opinion in Neurology.2017; 30(4): 416. CrossRef

Apathy and Olfactory Dysfunction in Early Parkinson’s Disease: Jin Yong Hong, Mun Kyung Sunwoo, Jee Hyun Ham, Jae Jung Lee, Phil Hyu Lee, Young H. Sohn; J Mov Disord. 2015;8(1):21-25. Published online January 31, 2015; DOI: https://doi.org/10.14802/jmd.14029

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114 Download
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Abstract PDF

Objective Olfactory and emotional dysfunctions are very common in patients with Parkinson’s disease (PD). Olfaction and emotions share common neuroanatomical substrates. Therefore, in this study, we evaluated the association between olfactory and emotional dysfunctions in patients with PD.
Methods Parkinson’s disease patients who had been assessed for their olfactory function and neuropsychiatric symptoms including emotional dysfunction were included. A logistic regression analysis was performed to evaluate the association between low olfaction and different neuropsychiatric symptoms.
Results The patients with low olfaction (cross cultural smell identification test score ≤ 6) showed a higher prevalence of apathy when compared with those with high olfaction, whereas the frequencies of other neuropsychiatric symptoms were comparable between the two groups. A multivariate logistic regression analysis revealed that the presence of apathy/indifference [odds ratio (OR) = 2.859, p = 0.007], age 70 years or more (OR = 2.281, p = 0.009), and the male gender (OR = 1.916, p = 0.030) were significantly associated with low olfaction.
Conclusions Our results demonstrate that apathy/indifference is a unique emotional dysfunction associated with olfactory dysfunction in PD. The findings also suggest that PD patients with low olfaction have a high prevalence of apathy.

Citations

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Alfonso E. Martinez-Nunez, Kaitie Latack, Miguel Situ-Kcomt, Abhimanyu Mahajan
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