Publications by authors named "Mika Yamawaki"
Article Synopsis
- The study investigated the link between exercise and subcortical gray matter volume in elderly individuals, finding that exercise may prevent brain atrophy.
- Researchers analyzed 280 elderly subjects without cognitive impairments, revealing that those who exercised had larger gray matter volumes, especially in the hippocampus and nucleus accumbens.
- The findings suggest that regular exercise is associated with better brain health and cognitive function preservation in older adults.
A 30-year-old Vietnamese woman, about 19 weeks pregnant, was admitted for acute cerebral infarction with stenosis of the left middle cerebral artery (LMCA), tuberculous meningitis, and miliary tuberculosis. Treatment with heparin, quadruple anti-tuberculosis therapy, and dexamethasone afforded prompt symptomatic improvement. However, she delivered a stillbirth, after which there was recurrence of acute cerebral infarction with LMCA occlusion, sinus thrombosis, and cranial base inflammation.
View Article and Find Full Text PDFArticle Synopsis
- The study investigated how mild parkinsonian signs (MPS) evolved over time and their links to dementia and functional disability among older adults living in Ama-cho.
- By the end of the second phase, 8.5% of participants who initially showed no parkinsonism developed it, with specific characteristics like lower cognitive scores strongly predicting this onset.
- Additionally, 10.1% of those initially without dementia developed it, indicating a significant relationship between MPS and dementia, while some participants saw a reversal of symptoms, linked to factors like younger age and adequate sleep.
Background: To determine the relationships between regional white matter lesions (WMLs), lifestyle factors, and cognitive, motor function and mood.
Methods: A comprehensive evaluation, including brain MRI, blood tests, the Unified Parkinson's Disease Rating Scale, the Mini Mental State Examination, and the Geriatric Depression Scale, was performed for people aged 65 years or older living in Ama-cho on October 1, 2009. Participants were classified by severity of periventricular hyperintensities (PVH) and deep white matter hyperintensities (DWMH) using the Fazekas score.
Epidemiological survey of frontotemporal lobar degeneration in tottori prefecture, Japan.
Dement Geriatr Cogn Dis Extra
January 2012
Background: The prevalence of frontotemporal lobar degeneration (FTLD) in Japan is unknown. An epidemiological survey study of FTLD was undertaken in Tottori Prefecture, a district in the western region of Japan.
Methods: Hospitals in Tottori Prefecture were surveyed by a two-step questionnaire in 2010, and the prevalence of FTLD per 100,000 inhabitants was calculated using the actual number of patients and inhabitants in Tottori Prefecture on the prevalence day of October 1, 2010.
Prevalence of Dementia and Mild Cognitive Impairment in the Rural Island Town of Ama-cho, Japan.
Dement Geriatr Cogn Dis Extra
January 2012
Aims: In order to determine the prevalence of dementia and mild cognitive impairment (MCI), we conducted a population-based study in Japan.
Methods: Participants included 924 subjects aged 65 years or older who resided in the town of Ama-cho. In phase 1 of the study, the Mini-Mental State Examination and Clinical Dementia Rating were administered for screening purposes.
Objective: Characteristic sleep disturbance in patients with Parkinson's disease (PD) was evaluated using a subjective questionnaire called the PD sleep scale (PDSS). In this study we sought to examine the relationship between the results from the PDSS with those from the Pittsburgh Sleep Quality Index (PSQI), the Epworth Sleepiness Scale (ESS), and polysomnography (PSG) in Japanese PD patients.
Subjects And Methods: Subjects were 79 PD patients and 79 age and gender matched controls.
Background/aim: To determine the prevalence and incidence of Parkinson's disease (PD) and compare them with results from our previous studies.
Methods: We examined epidemiological characteristics of PD patients using a service-based study in Yonago City, and a door-to-door study in Daisen Town. The prevalence days were April 1, 2004 in Yonago, and April 1, 2003 in Daisen.
The size and shape of novel partially fluorinated gemini surfactant 1,2-bis[dimethyl-(3-perfluoroalkyl-2-hydroxypropyl)ammonium]ethane bromide (CnFC3-2-C3CnF, where n=4, 6, and 8) were investigated in aqueous solution by means of light scattering and transmission electron microscopy (TEM). The sizes of these molecular aggregates changed with increasing carbon number of the alkyl chain and concentration. For example, the apparent hydrodynamic radius by dynamic light scattering was 18 nm at a concentration of cmcx5 for n=4, 115 nm at the cmcx15 for n=6, and 62 nm at the cmcx30 for n=8, at 298.
View Article and Find Full Text PDF