Huntington's Disease Research

02:02 EDT 22nd March 2019 | BioPortfolio

The prevalence and the burden of pain in patients with Huntington disease: a systematic review and meta-analysis.

It is remarkable that studies focusing on the prevalence and the burden of pain in patients with Huntington disease (HD) are scarce. This may lead to inadequate recognition of pain and hence lack of treatment, eventually affecting the quality of life. The aim of this review is to investigate the prevalence of pain and its burden in HD by performing a systematic literature search. In February 2018,...

Suicidal ideation and behavior in Huntington's disease: Systematic review and recommendations.

An increased risk of suicide in Huntington's disease (HD) patients is well documented, with rates significantly higher than those of the general population as well as other neurodegenerative diseases. However, despite its prevalence, the magnitude of this phenomenon as well as its predictors and etiology are still poorly understood.

Assessment of the Performance of a Modified Motor Scale as Applied to Juvenile Onset Huntington's Disease.

Huntington's disease can present at almost any age but traditionally, those with an onset ≤20 years are described as having juvenile onset Huntington's disease (JOHD). They are more likely to have bradykinesia and dystonia earlier in the course of the disease. The Total Motor Score of the Unified Huntington's Disease Rating Scale (UHDRS-TMS) is often used as the principal outcome measure in clin...

Cysteamine Protects Neurons from Mutant Huntingtin Toxicity.

The potential benefit of cysteamine for Huntington's disease has been demonstrated in HD animal models. Cysteamine and its derivate cystamine were shown to reduce neuropathology and prolong lifespan. Human studies have demonstrated safety, and suggestive results regarding efficacy. Despite all the studies available in vivo, there are only few in vitro studies, and the mechanism of action of cystea...

Genistein induces degradation of mutant huntingtin in fibroblasts from Huntington's disease patients.

Mutations in the HTT gene, consisting of expansion of CAG triplets, cause the Huntington's disease (HD), one of the major neurodegenerative disorders. Formation of aggregates of mutant huntingtin (mHTT, the product of the mutant HTT gene) leads to cellular dysfunctions, and subsequent neurodegeneration which manifest clinically as motor abnormalities and cognitive deficits. We recently used immort...

Perceptions of the impact of chorea on health-related quality of life in Huntington disease (HD): A qualitative analysis of individuals across the HD spectrum, family members, and clinicians.

Chorea, a hallmark symptom of Huntington's disease (HD), is characterized by jerky involuntary movements affecting the whole body that can interfere with daily functioning and impact health-related quality of life (HRQOL). To characterize chorea's impact on everyday functioning and HRQOL and identify patterns of perception and experiences of chorea among patients, caregivers, and providers. Data f...

Huntingtin Lowering Strategies for Disease Modification in Huntington's Disease.

Huntington's disease is caused by an abnormally expanded CAG repeat expansion in the HTT gene, which confers a predominant toxic gain of function in the mutant huntingtin (mHTT) protein. There are currently no disease-modifying therapies available, but approaches that target proximally in disease pathogenesis hold great promise. These include DNA-targeting techniques such as zinc-finger protei...

Correction: Further investigation of phenotypes and confounding factors of progressive ratio performance and feeding behavior in the BACHD rat model of Huntington disease.

[This corrects the article DOI: 10.1371/journal.pone.0173232.].

"Optimization of potent and selective Ataxia Telangiectasia Mutated (ATM) inhibitors suitable for a proof-of-concept study in Huntington's disease models".

Genetic and pharmacological evidence indicates that reduction of ataxia telangiectasia-mutated (ATM) kinase activity can ameliorate mutant huntingtin (mHTT) toxicity in cellular and animal models of Huntington's disease (HD), suggesting that selective inhibition of ATM could provide a novel clinical intervention to treat HD. Here we describe the development and characterization of ATM inhibitor mo...

Enhanced Na -K -2Cl cotransporter 1 underlies motor dysfunction in huntington's disease.

Altered γ-aminobutyric acid signaling is believed to disrupt the excitation/inhibition balance in the striatum, which may account for the motor symptoms of Huntington's disease. Na-K-2Cl cotransporter-1 is a key molecule that controls γ-aminobutyric acid-ergic signaling. However, the role of Na-K-2Cl cotransporter-1 and efficacy of γ-aminobutyric acid-ergic transmission remain unknown in Huntin...

Pioneering antisense drug heads into pivotal trials for Huntington disease.

Pervasive autobiographical memory impairments in Huntington's disease.

Autobiographical memory dysfunction is a pervasive feature of neurodegenerative disorders, but less is known about the integrity of autobiographical memory in Huntington's disease (HD). Deficits in anterograde verbal episodic memory on traditional neuropsychological tests have been detected in HD, however, whether personally-relevant autobiographical retrieval is also affected is unknown. We exami...

Unbiased Profiling of Isogenic Huntington Disease hPSC-Derived CNS and Peripheral Cells Reveals Strong Cell-Type Specificity of CAG Length Effects.

In Huntington disease (HD), the analysis of tissue-specific CAG repeat length effects has been challenging, given the difficulty in obtaining relevant patient tissues with a broad range of CAG repeat lengths. We used genome editing to generate an allelic panel of isogenic HD (IsoHD) human embryonic stem cell (hESC) lines carrying varying CAG repeat lengths in the first exon of HTT. Functional anal...

Fluid and imaging biomarkers for Huntington's disease.

Huntington's disease is a chronic progressive neurodegenerative condition for which there is no disease-modifying treatment. The known genetic cause of Huntington's disease makes it possible to identify individuals destined to develop the disease and instigate treatments before the onset of symptoms. Multiple trials are already underway that target the cause of HD, yet clinical measures are often ...

Alterations in hippocampal inhibitory synaptic transmission in the R6/2 mouse model of Huntington's disease.

Huntington's disease (HD) is a genetic neurodegenerative disorder of the central nervous system characterized by choreatic movements, behavioral and psychiatric disturbances and cognitive impairments. Deficits in learning and memory are often the first signs of disease onset in both HD patients and mouse models of HD and are in part regulated by the hippocampus. In the R6/2 mouse model of HD, GABA...

Visual Object Perception in Premanifest and Early Manifest Huntington's Disease.

In Huntington's disease (HD), a hereditary neurodegenerative disorder, cognitive impairment in early disease stages mainly involves executive dysfunction. However, visual cognitive deficits have additionally been reported and are of clinical relevance given their influence on daily life and overall cognitive performance. This study aimed to assess visual perceptual skills in HD gene carriers.

Contemporary Dance Practice Improves Motor Function and Body Representation in Huntington's Disease: A Pilot Study.

Physical exercise improves neurological conditions, but adherence is hard to establish. Dance might be a promising alternative; however, since patients with Huntington's disease (HD) suffer from rhythmic movement execution deficits, any metric dance practice must be avoided.

Cognitive Fitness to Drive in Huntington's Disease: Assessing the Clinical Utility of DriveSafe DriveAware.

DriveSafe DriveAware (DSDA) has been validated as an off-road screening tool for predicting on-road driving performance in clinical populations, but its utility in people with Huntington's disease (HD) is unknown.

Upcoming Meetings Related to Huntington's Disease.

Huntington's Disease Clinical Trials Corner: January 2019.

In this edition of the Huntington's Disease Clinical Trials Corner we expand on the GENERATION-HD1 and PACE-HD trials, and we list all currently registered and ongoing clinical trials in Huntington's disease.

Ghrelin-mediated improvements in the metabolic phenotype in the R6/2 mouse model of Huntington's disease.

Huntington's disease (HD) is a heritable neurodegenerative disorder, characterized by metabolic disturbances, along with cognitive and psychiatric impairments. Targeting metabolic HD dysfunction through maintenance of body weight and fat mass and restoration of peripheral energy metabolism can improve the progression of neurological symptoms. In this respect, we focused on the therapeutic potent...

Detection of axonal degeneration in a mouse model of Huntington's disease: comparison between diffusion tensor imaging and anomalous diffusion metrics.

The goal of this work is to study the changes in white matter integrity in R6/2, a well-established animal model of Huntington's disease (HD) that are captured by ex vivo diffusion imaging (DTI) using a high field MRI (17.6 T).

Motivational Impairment is Accompanied by Corticoaccumbal Dysfunction in the BACHD-Tg5 Rat Model of Huntington's Disease.

Neuropsychiatric symptoms, such as avolition, apathy, and anhedonia, precede the onset of debilitating motor symptoms in Huntington's disease (HD), and their development may give insight into early disease progression and treatment. However, the neuronal and circuit mechanisms of premanifest HD pathophysiology are not well-understood. Here, using a transgenic rat model expressing the full-length h...

Olfactory bulb atrophy and caspase activation observed in the BACHD rat models of Huntington disease.

Olfactory dysfunction is observed in several neurological disorders, including Huntington disease (HD), and correlates with global cognitive performance, depression and degeneration of olfactory regions in the brain. Despite clear evidence demonstrating olfactory dysfunction in HD patients, only limited details are available in murine models and the underlying mechanisms are unknown. In order to d...

Enhanced striatopallidal gamma-aminobutyric acid (GABA) receptor transmission in mouse models of huntington's disease.

Huntington's disease (HD) is caused by a CAG repeat expansion in the huntingtin gene. This mutation leads to progressive dysfunction that is largely attributable to dysfunction of the striatum. The earliest signs of striatal pathology in HD are found in indirect pathway gamma-Aminobutyric acid (GABA)-ergic spiny projection neurons that innervate the external segment of the globus pallidus (GPe). W...

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