scholarly journals Discriminative Pattern of Reduced Cerebral Blood Flow in Parkinson's Disease and Parkinsonism-Plus Syndrome: an ASL-MRI study

2020 ◽  
Author(s):  
Lina Cheng ◽  
Xiaoyan Wu ◽  
Ruomi Guo ◽  
Yuzhou Wang ◽  
Wensheng Wang ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Early Stage ◽  
Inferior Frontal Gyrus ◽  
Surrogate Marker ◽  
Depression Scale ◽  
Hamilton Depression Scale ◽  
The Right

Abstract Background: Accurate identification of Parkinson's disease (PD) and Parkinsonism-Plus syndrome (PPS), especially in the early stage of the disease, is very important. The purpose of this study was to investigate the discriminative spatial pattern of cerebral blood flow (CBF) between patients with PD and PPS. Methods: Arterial spin labeling (ASL) perfusion-weighted imaging was performed in 20 patients with PD (mean age 56.35±7.56 years), 16 patients with PPS (mean age 59.62±6.89 years), and 17 healthy controls (HCs, mean age 54.17±6.58 years). Voxel-wise comparison of the CBF was performed among PD, PPS, and HC groups. The receiver operating characteristic (ROC) curve was used to evaluate the performance of CBF in discriminating between PD and PPS. The relationship between CBF and non-motor neuropsychological scores was assessed by correlation analysis. Results: PD group showed a significantly decreased CBF in the right cerebelum_crus2, the left middle frontal gyrus (MFG), the triangle inferior frontal gyrus (IFG_Tri), the left frontal medial orbital gyrus (FG_Med_Orb) and the left caudate nucleus (CN) compared with the HC group (P < 0.05). Besides the above regions, the left supplementary motor area (SMA), the right thalamus had decreased CBF in the PPS group compared with the HC group (P < 0.05). PPS group had lower CBF value in the left MFG, the left IFG_Tri, the left CN, the left SMA, and the right thalamus compared with the PD group (P < 0.05). CBFs in left IFG_Tri, the left CN, the left SMA, and the right thalamus had moderate to high capacity in discriminating between PD and PPS patients (AUC 0.719-0.831). The CBF was positively correlated with MMSE and Montreal cognitive assessment (MoCA) scores in PD patients, while positively correlated with the Mini-mental State Examination (MMSE), Hamilton anxiety scale (HAMA), Hamilton depression scale (HAMD) scores in PPS patients (P < 0.05). Conclusion: PD and PPS patients have certain discriminative patterns of reduced CBFs, which can be used as a surrogate marker for differential diagnosis.

scholarly journals Discriminative Pattern of Reduced Cerebral Blood Flow in Parkinson's Disease and Parkinsonism-Plus Syndrome: an ASL-MRI study

2020 ◽  
Author(s):  
Lina Cheng ◽  
Xiaoyan Wu ◽  
Ruomi Guo ◽  
Yuzhou Wang ◽  
Wensheng Wang ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Early Stage ◽  
Inferior Frontal Gyrus ◽  
High Capacity ◽  
Surrogate Marker ◽  
Accurate Identification ◽  
The Right

Abstract Background: Accurate identification of Parkinson's disease (PD) and Parkinsonism-Plus syndrome (PPS), especially in the early stage of the disease, is very important. The purpose of this study was to investigate the discriminative spatial pattern of cerebral blood flow (CBF) between patients with PD and PPS.Methods: Arterial spin labeling (ASL) perfusion-weighted imaging was performed in 20 patients with PD (mean age 56.35±7.56 years), 16 patients with PPS (mean age 59.62±6.89 years), and 17 healthy controls (HCs, mean age 54.17±6.58 years). Voxel-wise comparison of the CBF was performed among PD, PPS and HC groups. The receiver operating characteristic (ROC) curve was used to evaluate the performance of CBF in discriminating between PD and PPS.Results: PD group showed a significantly decreased CBF in the right cerebelum_crus2, the left middle frontal gyrus (MFG), the triangle inferior frontal gyrus (IFG_Tri), the left frontal medial orbital gyrus (FG_Med_Orb) and the left caudate nucleus (CN) compared with the HC group (P < 0.05). Besides the above regions, the left supplementary motor area (SMA), the right thalamus had decreased CBF in the PPS group compared with the HC group (P < 0.05). PPS group had lower CBF value in the left MFG, the left IFG_Tri, the left CN, the left SMA, and the right thalamus compared with the PD group (P < 0.05). CBFs in left IFG_Tri, the left CN, the left SMA, and the right thalamus had moderate to high capacity in discriminating between PD and PPS patients (AUC 0.719-0.831).Conclusion: PD and PPS patients have certain discriminative patterns of reduced CBFs, which can be used as a surrogate marker for differential diagnosis.

scholarly journals Aberrant Changes in Cortical Complexity in Right-Onset Versus Left-Onset Parkinson’s Disease in Early-Stage

2021 ◽  
Vol 13 ◽  
Author(s):  
Lin Zhang ◽  
Qin Shen ◽  
Haiyan Liao ◽  
Junli Li ◽  
Tianyu Wang ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Early Stage ◽  
Depression Scale ◽  
Peak Level ◽  
Magnetic Resonance Images ◽  
Motor Symptom ◽  
Hamilton Depression Scale ◽  
The Mean ◽  
Sulcal Depth

There is increasing evidence to show that motor symptom lateralization in Parkinson’s disease (PD) is linked to non-motor features, progression, and prognosis of the disease. However, few studies have reported the difference in cortical complexity between patients with left-onset of PD (LPD) and right-onset of PD (RPD). This study aimed to investigate the differences in the cortical complexity between early-stage LPD and RPD. High-resolution T1-weighted magnetic resonance images of the brain were acquired in 24 patients with LPD, 34 patients with RPD, and 37 age- and sex-matched healthy controls (HCs). Cortical complexity including gyrification index, fractal dimension (FD), and sulcal depth was analyzed using surface-based morphometry via CAT12/SPM12. Familywise error (FWE) peak-level correction at p &lt; 0.05 was performed for significance testing. In patients with RPD, we found decreased mean FD and mean sulcal depth in the banks of the left superior temporal sulcus (STS) compared with LPD and HCs. The mean FD in the left superior temporal gyrus (STG) was decreased in RPD compared with HCs. However, in patients with LPD, we did not identify significantly abnormal cortical complex change compared with HCs. Moreover, we observed that the mean FD in STG was negatively correlated with the 17-item Hamilton Depression Scale (HAMD) among the three groups. Our findings support the specific influence of asymmetrical motor symptoms in cortical complexity in early-stage PD and reveal that the banks of left STS and left STG might play a crucial role in RPD.

scholarly journals Depression in Parkinson's disease: study of 60 cases

2005 ◽  
Vol 63 (3b) ◽  
pp. 766-771 ◽  
Author(s):  
Roberto César Pereira do Prado ◽  
Egberto Reis Barbosa
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Psychiatric Symptoms ◽  
Depression Scale ◽  
Hamilton Depression Scale ◽  
Structured Interviews ◽  
Clinical Criteria ◽  
Disease Study ◽  
Age Range ◽  
Relationship Of

Depression is very frequent in Parkinson’s disease (PD) and largely unrecognized by neurologists, emphasizing the need of an approach to psychiatric symptoms by non psychiatrists in order to ensure an early diagnosis of depression in PD; clinical characteristics and the prevalence rate of depression in PD were evaluated and the relationship of depression in PD with other variables were determined. Sixty PD subjects, who fulfilled the clinical criteria for primary PD, 56,6% males, age range from 44 to 85 years old, in different stages of the disease were investigated. All subjects were submitted to the UPDRS-III, V and VI, Clinical Interview Schedule and the Hamilton depression scale. A significant correlation was found between depression and UPDRS-III, V and VI, anxiety and irritability. The frequency of depression in PD in this study was nearly 40% possessing specific features. Structured interviews and evaluation scales are essential for an accurate diagnosis and proper treatment of depression in PD.

scholarly journals Region-Specific Neurovascular Decoupling Associated With Cognitive Decline in Parkinson’s Disease

2021 ◽  
Vol 13 ◽  
Author(s):  
Song’an Shang ◽  
Hongying Zhang ◽  
Yuan Feng ◽  
Jingtao Wu ◽  
Weiqiang Dou ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Cognitive Impairment ◽  
Cognitive Decline ◽  
Cognitive Deficits ◽  
Inferior Frontal Gyrus ◽  
Neurovascular Coupling ◽  
Angular Gyrus ◽  
Visual Spatial ◽  
The Right

Background: Cognitive deficits are prominent non-motor symptoms in Parkinson’s disease (PD) and have been shown to involve the neurovascular unit (NVU). However, there is a lack of sufficient neuroimaging research on the associated modulating mechanisms. The objective of this study was to identify the contribution of neurovascular decoupling to the pathogenesis of cognitive decline in PD.Methods: Regional homogeneity (ReHo), a measure of neuronal activity, and cerebral blood flow (CBF), a measure of vascular responses, were obtained from patients with PD with mild cognitive impairment (MCI) and normal cognition (NC) as well as matched healthy controls (HCs). Imaging metrics of neurovascular coupling (global and regional CBF-ReHo correlation coefficients and CBF-ReHo ratios) were compared among the groups.Results: Neurovascular coupling was impaired in patients with PD-MCI with a decreased global CBF-ReHo correlation coefficient relative to HC subjects (P &lt; 0.05). Regional dysregulation was specific to the PD-MCI group and localized to the right middle frontal gyrus, right middle cingulate cortex, right middle occipital gyrus, right inferior parietal gyrus, right supramarginal gyrus, and right angular gyrus (P &lt; 0.05). Compared with HC subjects, patients with PD-MCI showed higher CBF-ReHo ratios in the bilateral lingual gyri (LG), bilateral putamen, and left postcentral gyrus and lower CBF-ReHo ratios in the right superior temporal gyrus, bilateral middle temporal gyri, bilateral parahippocampal gyri, and right inferior frontal gyrus. Relative to the HC and PD-NC groups, the PD-MCI group showed an increased CBF-ReHo ratio in the left LG, which was correlated with poor visual–spatial performance (r = −0.36 and P = 0.014).Conclusion: The involvement of neurovascular decoupling in cognitive impairment in PD is regionally specific and most prominent in the visual–spatial cortices, which could potentially provide a complementary understanding of the pathophysiological mechanisms underlying cognitive deficits in PD.

scholarly journals Correlation between regional cerebral blood flow and dementia in Parkinson's disease.

1986 ◽  
Vol 53 (1) ◽  
pp. 112-114
Author(s):  
Tokuzo Miyazaki ◽  
Akiro Terashi ◽  
Hiroyuki Tezuka ◽  
Noboru Kasahara ◽  
Isamu Koizumi ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Regional Cerebral Blood Flow ◽  
Regional Cerebral Blood
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