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Parkinson's disease (PD) patients express motor symptoms only after 60-80% striatal dopamine (DA) depletion. The presymptomatic phase of the disease may be sustained by biochemical modifications within the striatum. We used an appropriate specific 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) monkey model (Mounayar et al., 2007) to study the compensatory mechanisms operating in recovery from PD motor symptoms. We assessed the levels of DA and its metabolites (DOPAC, homovanillic acid), GABA, glutamate (Glu), serotonin (5-HT) and its metabolite (5HIAA) by repeated intracerebral microdialysis in awake animals before exposure to MPTP during full expression of the motor symptoms induced by MPTP and after recovery from these symptoms. Measurements were obtained from two functionally and anatomically different striatal areas: the associative-limbic territory and sensorimotor territory. Animals with motor symptoms displayed an extremely large decrease in levels of DA and its metabolites and an increase in Glu and GABA levels, as reported by other studies. However, we show here for the first time that serotonin levels increased in these animals. We found that increases in DA levels in the sensorimotor and/or associative-limbic territory and high levels of 5-HT and of its metabolite, 5HIAA, were associated with recovery from motor symptoms in this model. Determining whether similar changes in DA and 5-HT levels are involved in the compensatory mechanisms delaying the appearance of motor symptoms in the early stages of PD might make it possible to develop new treatment strategies for the disease.
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http://dx.doi.org/10.1523/JNEUROSCI.3465-08.2008 | DOI Listing |
BMJ Neurol Open
December 2024
Aichi Medical University, Nagakute, Aichi, Japan.
Objective: The objective of this study is to identify factors influencing progression of respiratory decline from the onset of neurological symptoms to respiratory failure in patients with amyotrophic lateral sclerosis (ALS).
Methods: In 100 patients with sporadic ALS, %vital capacity (%VC) was continuously measured from the first visit to the respiratory endpoint (REP). Cox proportional hazards model identified factors influencing the duration from onset of ALS to REP (Onset-REP).
Front Neurol
December 2024
Henan Academy of Innovations in Medical Science, Brain Institute, Zhengzhou, China.
Parkinson's disease (PD) is a chronic, progressive neurological disorder primarily affecting motor control, clinically characterized by resting tremor, bradykinesia, rigidity, and other symptoms that significantly diminish the quality of life. Currently, available treatments only alleviate symptoms without halting or delaying disease progression. There is a significant association between PD and type 2 diabetes mellitus (T2DM), possibly due to shared pathological mechanisms such as insulin resistance, chronic inflammation, and mitochondrial dysfunction.
View Article and Find Full Text PDFBMJ Case Rep
December 2024
Facultad de Medicina, Universidad Anahuac Cancun, Cancún, Quintana Roo, Mexico
This report details the case of a preadolescent female patient diagnosed with Kabuki syndrome, a rare genetic disorder characterised by distinctive facial features, growth delay and cognitive impairment. The patient's medical history includes perinatal complications, alongside challenges in developmental milestones, feeding and psychomotor skills since infancy, prompting further investigation. Genetic testing confirmed the diagnosis, revealing a full deletion of The patient underwent a multidisciplinary approach, addressing various aspects of her condition, which resulted in significant improvements in several areas.
View Article and Find Full Text PDFJ Sport Rehabil
December 2024
Children's Health Andrews Institute, Plano, TX, USA.
Context: Targeted and directed rehabilitation with a healthcare provider can be an effective approach in the treatment of concussion, particularly for patients with protracted recovery, high symptom reporting, cervicogenic dysfunction, musculoskeletal involvement, and/or vestibular/oculomotor dysfunction. While many environmental and intrinsic medical history factors may influence concussion recovery, little is known about whether an individual's recovery trajectory can be influenced by the amount of time taken to receive rehabilitation. The purpose of this study was to evaluate recovery trajectories of concussion patients requiring targeted multimodal rehabilitation after a specialty concussion clinic visit within ≤3 days, 4 to 7 days, and >7 days.
View Article and Find Full Text PDFVopr Kurortol Fizioter Lech Fiz Kult
December 2024
Saint-Petersburg State Pediatric Medical University, Saint-Petersburg, Russia.
Unlabelled: Dystrophinopathies - a group of hereditary X-linked neuromuscular diseases characterized by worsening fibrofatty degeneration of skeletal muscles, muscular weakness, low exercise tolerance, as well as orthopedic, cardiovascular and respiratory complications. Study of the effectiveness of physical medical rehabilitation in patients with neuromuscular diseases, evaluation of the influence of external and internal factors on functional capabilities and effectiveness of the conducted rehabilitation are highly relevant.
Objective: To evaluate the effectiveness of physical medical rehabilitation of patients with dystrophinopathies at the outpatient stages of the disease's course and the influence of anthropometric characteristics and functional status of patients' motor capabilities.
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