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BACKGROUND Blood uric acid level represents an emerging biomarker in Parkinson's disease (PD). Whether uric acid levels change in genetic forms of PD is just beginning to be explored. OBJECTIVE The aim of the present study was to assess differences in serum uric acid level among PD patients harboring the p.A53T mutation in the alpha-synuclein gene, idiopathic PD, and healthy controls. METHODS Longitudinal 5-year serum uric acid measurement data of 369 de novo idiopathic PD patients and 174 age- and gender-matched healthy controls have been downloaded from the Parkinson's Progression Markers Initiative (PPMI) database. Furthermore, we assessed baseline serum uric acid measurements of 24 p.A53T alpha-synuclein PD patients enrolled in PPMI and followed in our site as compared to 24 age-, gender- and disease duration-matched sporadic PD patients and 24 healthy controls. RESULTS Longitudinal serum uric acid measurements did not differ statistically between idiopathic PD patients and healthy controls (despite a trend for lower uric acid in the PD group) (p = 0.879). This was also true when male and female subgroups were assessed separately. The p.A53T SNCA mutation carrier PD group exhibited lower baseline serum uric acid level as compared to their matched healthy controls (p = 0.025). CONCLUSION In the present study we did not replicate the established lower serum uric acid measurements in PD patients as compared to controls using PPMI data, possibly due to the fact that PD patients in baseline visit were de novo and the average disease duration was shorter than that observed in most epidemiological PD studies. The faster progression rate and increased disease severity in p.A53T PD possible correlate with the lower serum uric acid observed in this subgroup.BACKGROUND Accumulation of α-synuclein (αSyn) in the dopaminergic neurons is a common pathology seen in patients with Parkinson's disease (PD). Overproduction of αSyn potentiates the formation of oligomeric αSyn aggregates and enhances dopaminergic neuron degeneration. Downregulating intracellular monomeric αSyn prevents the formation of αSyn oligomers and is a potential therapeutic strategy to attenuate the progression of PD. OBJECTIVE The purpose of this study is to investigate the efficacy of gene delivery of αSyn-specific single-chain antibodies in vitro and in vivo. METHODS AND RESULTS The plasmids for αSyn and selective antibodies (NAC32, D10, and VH14) were constructed and were transfected to HEK293 and SH-SY5Y cells. Co-expression of αSyn with NAC32, but not D10 or VH14, profoundly downregulated αSyn protein, but not αSyn mRNA levels in these cells. The interaction of αSyn and NAC32 antibody was next examined in vivo. Adeno-associated virus (AAV)-αSyn combined with AAV-NAC32 or AAV-sc6H4 (a negative control virus) were stereotactically injected into the substantia nigra of adult rats. AAV-NAC32 significantly reduced AAV-encoded αSyn levels in the substantia nigra and striatum and increased tyrosine hydroxylase immunoreactivity in the striatum. Also, in the animals injected with AAV-NAC32 alone, endogenous αSyn protein levels were significantly downregulated in the substantia nigra. CONCLUSION Our data suggest that AAV-mediated gene transfer of NAC32 is a feasible approach for reducing the expression of target αSyn protein in brain.BACKGROUND Understanding the regional needs and available healthcare resources to treat Parkinson's disease (PD) is essential to plan appropriate future priorities. SNDX-5613 supplier The International Parkinson and Movement Disorder Society (MDS) Task Force on the Middle East was established to raise awareness and promote education across the region on PD and other movement disorders. Broadly, the task force encompasses the countries of the Middle East but has included North Africa and South Asia as well (MENASA). OBJECTIVE To create a list of needs and priorities in the advancement of PD in MENASA countries based on consensuses generated by the MDS task force for the Middle East. METHODS A Strengths Weaknesses-Opportunities-Threats (SWOT) analysis was conducted by the task force members to generate consensus about PD care priorities in these regions. RESULTS Eight overarching principles emerged for the consensus statement on current needs more movement disorders specialists, multidisciplinary care, accurate epidemiologic data, educational programs, availability of drugs, and availability of more advanced therapy, enhanced health care resources and infrastructure, and greater levels of awareness within the general population and among health care professionals. CONCLUSION This pilot study sheds light on unmet needs for providing care to people with PD in the MENASA. These data offer directions on priorities to increase awareness of PD, to develop better infrastructure for research and management of PD, to foster healthcare policy discussions for PD and to provide educational opportunities within these countries.Human genes have a variable length. Those having a coding sequence of extraordinary length and a high number of exons were almost impossible to sequence using the traditional Sanger-based gene-by-gene approach. High-throughput sequencing has partly overcome the size-related technical issues, enabling a straightforward, rapid and relatively inexpensive analysis of large genes.Several large genes (e.g. TTN, NEB, RYR1, DMD) are recognized as disease-causing in patients with skeletal muscle diseases. However, because of their sheer size, the clinical interpretation of variants in these genes is probably the most challenging aspect of the high-throughput genetic investigation in the field of skeletal muscle diseases.The main aim of this review is to discuss the technical and interpretative issues related to the diagnostic investigation of large genes and to reflect upon the current state of the art and the future advancements in the field.BACKGROUND Dysphagia and dysarthria are frequently described in pediatric neuromuscular diseases (pNMD). The consequences can be substantial failure to thrive, malnutrition, aspiration pneumonia, or communication problems. Early detection and identification of risk factors and etiology support preventing complications and morbidity, including impact on quality of life. Information about the prevalence of dysphagia and dysarthria in pNMD is scarce. OBJECTIVE To describe the pooled prevalence of dysphagia and dysarthria in pNMD in the Netherlands. In addition, we describe the prevalence of dysphagia and dysarthria each, and the prevalence of chewing (oral) and swallowing problems per diagnostic group, based on their anatomic origin. METHODS Data were collected from 295 children (mean age 11;0 years, range 2;6-18;0) with pNMD in 12 hospitals and rehabilitation centers in the Netherlands. A speech language therapist established whether dysphagia and dysarthria were present or not. RESULTS In almost all the 14 diagnostic groups of pNMD, dysphagia and dysarthria were present.
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