Publications by authors named "Sakakibara Ryuji"

Objectives: Seated voiding may be an attempt to obviate voiding dysfunction, improve physical stability during voiding, and prevent messy bathroom contamination. Therefore, we hypothesized that seated voiders had a higher prevalence of lower urinary tract symptoms (LUTS), deteriorating health conditions, and a higher marriage rate than standing voiders.

Methods: Of the participants from the 2023 Japan Community Health Survey conducted by the Japanese Continence Society, 2936 men (mean age: 53.

View Article and Find Full Text PDF
Article Synopsis
  • The study aimed to investigate underactive bladder (UAB) characteristics in participants of the 2023 Japan Community Health Survey, involving 6,210 people aged 20-99.
  • Results showed a higher prevalence of UAB in men (9.3%) compared to women (4.0%), with increased prevalence correlating with age and a greater occurrence of storage symptoms in those with UAB.
  • The findings suggested that frailty and certain comorbidities were independently linked to UAB, highlighting its significant impact on health in the community.
View Article and Find Full Text PDF
Article Synopsis
  • The study investigates bladder dysfunction in patients with multiple system atrophy (MSA), focusing on the relationship between bladder contractility, post-void residuals (PVR), and voided percentage (VOID%).
  • Researchers analyzed data from 133 MSA patients to determine the best value of "k" (a variable in the contractility formula) that correlates with PVR and VOID%.
  • The findings suggest that a "k" value of over 5.0 is suitable for males, but a higher value (over 6.0) may lead to overestimation in females, indicating a need for improved formulas for female patients.
View Article and Find Full Text PDF
Article Synopsis
  • - A nationwide survey in Japan in 2023 found that 77.9% of participants aged 20 and older reported lower urinary tract symptoms (LUTS), with prevalence increasing to 82.5% among those 40 and older.
  • - The study included 6,210 participants (3088 females and 3122 males) and revealed that conditions like overactive bladder (OAB) affected 11.9% of the younger age group (≥20) and 13.8% of those 40 and older.
  • - Despite the high prevalence and negative impact of LUTS on daily life, few participants sought medical treatment, highlighting the need for increased awareness and education on the subject.
View Article and Find Full Text PDF

Here we reviewed bladder dysfunction in neurological diseases. Diseases of the brain cause overactive bladder (OAB); peripheral neuropathy including lumbar spondylosis results in postvoid residual; and spinal cord diseases cause a combination of OAB and postvoid residual. Multiple system atrophy mimics bladder dysfunction related to spinal cord disease.

View Article and Find Full Text PDF

α-Synuclein (α-Syn) is a protein related to synucleinopathies with high expression in the central nervous system and erythrocytes which are a major source of peripheral α-Syn. Recent reports have suggested the presence of α-Syn within extracellular vesicles (EVs) derived from erythrocytes, potentially contributing to the pathogenesis of synucleinopathies. While Lewy bodies, intracellular inclusions containing aggregated α-Syn, are prominently observed within the brain, their occurrence in peripheral neurons implies the dissemination of synucleinopathy pathology throughout the body via the propagation of α-Syn.

View Article and Find Full Text PDF

With population aging, cognitive impairments and movement disorders due to neurodegenerative diseases, such as Alzheimer's disease (AD), Parkinson's disease (PD) and dementia with Lewy bodies (DLB), are increasingly considered as key social issues. Clinically, it has remained challenging to diagnose them before the onset of symptoms because of difficulty to observe the progressive loss of neurons in the brain. Therefore, with exploratory research into biomarkers, a number of candidates have previously been proposed, such as activities of mitochondrial respiratory chain complexes in blood in AD and PD.

View Article and Find Full Text PDF

The medial prefrontal cortex (mPFC) regulates bladder contractions via the periaqueductal grey (PAG). Subthalamic nucleus deep brain stimulation (STN-DBS) modulates urinary afferent information from PAG in Parkinson's disease (PD). We do not know how STN-DBS modulates the activities of mPFC induced by PAG stimulation.

View Article and Find Full Text PDF

Nervous system disorders may be accompanied by gastrointestinal (GI) dysfunction. Brain lesions may be responsible for GI problems such as decreased peristalsis (e.g.

View Article and Find Full Text PDF
Article Synopsis
  • Lower urinary tract (LUT) symptoms are common in Parkinson's disease and can worsen motor symptoms, impact quality of life, and increase fall risk.
  • A comprehensive evaluation is needed as various medical co-morbidities and Parkinson's medications can influence LUT symptoms, which are often overlooked.
  • Treatment options range from behavioral therapies and oral medications to botulinum toxin and neuromodulation, but care must be taken to manage potential drug interactions and side effects that could worsen Parkinson's symptoms.
View Article and Find Full Text PDF

Urinary dysfunction includes an overactive bladder (OAB), post-void residual (PVR)/retention, or both entities. Brain diseases cause OAB, peripheral neuropathies are associated with significant PVR/retention, and multisystem atrophy/spinal cord diseases result in a combination of OAB and PVR/retention. Selective beta 3 adrenergic receptor agonists or anticholinergic agents are the first-choice treatment for OAB and clean intermittent self-catheterization, alpha-blocker and cholinergic stimulant therapy for significant PVR/retention.

View Article and Find Full Text PDF

This article reviewed brain mechanism of the lower urinary tract (LUT). Among autonomic nervous systems, LUT is unique in terms of afferent pathophysiology; bladder sensation is perceived soon after the storage phase and throughout the voiding phase. Within the brain, this is measured in experimental animals by the firing of single neurons and in humans by evoked potentials/functional neuroimaging.

View Article and Find Full Text PDF

We reviewed the autonomic dysfunction in multiple system atrophy (MSA) with reference to the new MDS criteria. MSA is a major neurodegenerative disorder that presents with autonomic and motor dysfunctions (cerebellar ataxia and/or parkinsonism). Autonomic dysfunction in MSA affects urinary, cardiac, gastrointestinal, otorhinolaryngologic, and respiratory functions.

View Article and Find Full Text PDF

α-Synuclein is a protein linked to various synuclein-associated diseases ('synucleinopathies'), including Parkinson's disease, dementia with Lewy Bodies and multiple system atrophy, and is highly expressed in the central nervous system and in erythrocytes. Moreover, α-synuclein-containing erythrocyte-derived extracellular vesicles may be involved in the pathogenesis of synucleinopathies and their progression across the blood-brain barrier. Several post-translational modifications of α-synuclein have been reported in brain inclusions, including S129 phosphorylation, but fewer have been found in erythrocytes.

View Article and Find Full Text PDF

Background And Purpose: Autonomic dysfunction has been occasionally described in varicella-zoster virus (VZV) infection, while few systematic reviews are available. We systematically review autonomic dysfunction due to VZV infection.

Methods: This study followed the PRISMA guideline, and three databases were researched and included cross-sectional studies in full-length publications in the English language using appropriate search keywords.

View Article and Find Full Text PDF

We herein report a 73-year-old Japanese woman with possible multiple system atrophy-cerebellar form (MSA-C) who suffered from urinary retention (sacral autonomic disorder) for 12 years before exhibiting cerebellar ataxia. A peculiar combination of findings on urodynamics and sphincter electromyography (EMG), e.g.

View Article and Find Full Text PDF

Background: The second consensus criteria for the diagnosis of multiple system atrophy (MSA) are widely recognized as the reference standard for clinical research, but lack sensitivity to diagnose the disease at early stages.

Objective: To develop novel Movement Disorder Society (MDS) criteria for MSA diagnosis using an evidence-based and consensus-based methodology.

Methods: We identified shortcomings of the second consensus criteria for MSA diagnosis and conducted a systematic literature review to answer predefined questions on clinical presentation and diagnostic tools relevant for MSA diagnosis.

View Article and Find Full Text PDF

Multiple system atrophy (MSA) is a neurodegenerative disease characterized by both autonomic and motor dysfunction (cerebellar ataxia and/or parkinsonism). The former presents with symptoms associated with urological, cardiovascular, gastrointestinal, auditory, and respiratory disorders, among others. Therefore, multidisciplinary collaboration between neurologists and specialists from the aforementioned disciplines is extremely important for the management of these patients.

View Article and Find Full Text PDF

Background: It is known that age-related brain symptoms (gait difficulty and dementia) increase the likelihood of fall-related surgery. In contrast, it is not known which types of brain disease underlie such symptoms most.

Objective: The aim of this study was to correlate brain diseases with the types of surgeries performed at our hospital for patients who had fallen.

View Article and Find Full Text PDF

We here described the frequency and nature of voiding and storage bladder symptoms in depression/anxiety, for which we propose the name "bladder somatic symptom disorder (SSD)" because such symptoms most probably have brain mechanisms. SSD was formerly called as various terms including "somatoform disorder", "medically unexplained physical symptoms", "functional somatic syndrome" and "hysterical neurosis/hysteria". Bladder SSD has the following specific features that are distinguishable from "true" neurologic/organic bladder dysfunction: 1) situation-dependence (close association with life event in some), 2) urodynamically increased bladder sensation/hypersensitivity and 3) absence of neurologic/organic diseases, in addition to 4) other stress symptoms (insomnia, etc.

View Article and Find Full Text PDF