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Different Imaging Evaluating Performances Between Glymphatic System and Motor Symptoms and Levodopa Responsiveness of Parkinson Disease.
J Comput Assist Tomogr
January 2025
Department of Radiology, the First Affiliated Hospital of Shenzhen University, Health Science Center, Shenzhen Second People's Hospital, Shenzhen.
Background And Purpose: Parkinson disease (PD) is defined by its unique motor symptoms, where responsiveness to levodopa (L-DOPA) is fundamental for management. Recent research has highlighted a significant relationship between PD symptoms and glymphatic dysfunction. This study endeavors to clarify the connection between glymphatic system functionality and initial motor symptoms in PD, utilizing imaging biomarkers to determine its predictive capacity for L-DOPA responsiveness (LR).
View Article and Find Full Text PDFO-GlcNAcylation regulates tyrosine hydroxylase serine 40 phosphorylation and L-DOPA levels.
Am J Physiol Cell Physiol
January 2025
Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro.
O-GlcNAcylation is a post-translational modification characterized by the covalent attachment of a single moiety of GlcNAc on serine/threonine residues in proteins. Tyrosine hydroxylase (TH), the rate-limiting step enzyme in the catecholamine synthesis pathway and responsible for production of the dopamine precursor, L-DOPA, has its activity regulated by phosphorylation. Here, we show an inverse feedback mechanism between O-GlcNAcylation and phosphorylation of TH at serine 40 (TH pSer40).
View Article and Find Full Text PDFCOMPARING DIRECTIONAL AND OMNIDIRECTIONAL DEEP BRAIN STIMULATION IN PARKINSON'S DISEASE PATIENTS.
Stereotact Funct Neurosurg
January 2025
Introduction: In 2015, directional leads have been released in Europe for deep brain stimulation (DBS) and have been particularly used for subthalamic nucleus (STN) DBS for Parkinson's disease (PD). In this study we aimed to compare an omnidirectional and directional leads cohort of PD patients when it comes to clinical effectiveness and to assess the correlation with volume of tissue activated - target overlap (VTA-target).
Methods: A total of 60 consecutive patients were retrospectively included.
Fabrication of a micropatterned shape-memory polymer patch with L-DOPA for tendon regeneration.
Biomater Sci
January 2025
Department of Nanobiomedical Science & BK21 FOUR micropatterned shape-memory NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan 31116, Republic of Korea.
A scaffold design for tendon regeneration has been proposed, which mimics the microstructural features of tendons and provides appropriate mechanical properties. We synthesized a temperature-triggered shape-memory polymer (SMP) using the ring-opening polymerization of polycaprolactone (PCL) with polyethylene glycol (PEG) as a macroinitiator. We fabricated a micropatterned patch using SMP capillary force lithography, which mimicked a native tendon, for providing physical cues and guiding effects.
View Article and Find Full Text PDFBeyond Dopamine: Novel Therapeutic Pathways for Parkinson's Disease Through Receptor Signaling.
CNS Neurol Disord Drug Targets
January 2025
Department of Pharmacology, ISF College of Pharmacy, Moga, Punjab 142001, India.
Parkinson's disease (PD) is a progressive neurological condition characterized by both dopaminergic and non-dopaminergic brain cell loss. Patients with Parkinson's disease have tremors as a result of both motor and non-motor symptoms developing. Idiopathic Parkinson's disease (idiopathic PD) prevalence is increasing in people over 60.
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