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Sep 2018 DOI 10.14302/issn.2470-5020.jnrt-18-2185
Yilmaz AtillaCorresponding author
Hatay Mustafa Kemal University Medicine Faculty Neurosurgery Department, Hatay, Turkey.
Background: Deep brain stimulation (DBS) of the subthalamic nucleus (STN) provides efficient treatment for the alleviation of motor signs in patients with Parkinson's disease (PD), but more studies about gait and functionality are needed. We aimed to understand whether short-term DBS treatment will can relieve the symptoms of PD patients, specifically we examined its effect on motor-cognitive-complication parameters, fine motor skills and daily living activity (DLA) of these patients. Method: Ten patients from Mustafa Kemal University Neurosurgery Department were recruited. The assessments were made twice, first time preoperatively, which was within one week prior to the surgery, second time postoperatively, which was 55-65 days post treatment. The motor scores, DLA scores, mental scores and complication scores were measured with Unified Parkinson's Disease Rating Scale (UPDRS), fine motor skills measured with The nine-hole peg test (9-HPT), balance measured with Berg Balance Scale (BBS) and falling risk measured with Timed Up and Go Test (TUG). Results: 10 patients (5 female, 5 male) aged between 40-60 (mean=49.44±6.69 years) were included in the study. Duration of the disease’s mean was 5.60 years. We found significant difference between pre-op and post-op results in UPDRS DLA, UPDRS motor, UPDRS complication, UPDRS total score and TUG tests (Table 2). There was no significant difference between preop-postop assessment in UPDRS mental, BBS and 9-HPT results (p>0.05). Discussion: Balance, walk and fine motor impairment occurs almost always in Parkinson’s disease and resulting in difficulties with daily living activities. We found that DBS has positive effect on PD complications, balance and walking abilities. PD patients that have falling risk and multiple motor symptoms may have benefit from DBS.
Oct 2016 DOI 10.14302/issn.2470-5020.jnrt-16-1240
Kristoper P. de Guzman JanCorresponding author
Department of Neurology, Jose R. Reyes Memorial Medical Center
Background: Impulse Control Disorders (ICDs) are characterized as pathologicalbehavioral patterns of excess impulsivity which may result as part of the non-motor complications of Parkinson’s disease (PD). These significantly affect the patient’s overall quality of life and have impact on their care givers, as well. Currently, the prevalence of ICDs among adult Filipino patients with Parkinson’s disease is unknown and less reported. Objectives: The study is intended to determine the prevalence of ICDs and its severityamong adult Filipino patients with idiopathic Parkinson’s disease seen at Jose R. Reyes Memorial Medical Center. Specifically, this study will identify risk factors and the clinical correlates to these patients. Methods: Adult Filipino patients diagnosed withidiopathic Parkinson’s diseasewhowere seen at the outpatient department from March 2015 – September 2015 are screened for the study. The Modified Hoehn and Yahr staging was utilized to determine the stage of PD. With approval from the author, the Questionnaire for Impulsive-Compulsive Disorders in Parkinson’s Disease-Rating Scale (QUIP-RS) was used for detecting the presence of ICDs and corresponding severity. Results: We were able to examine 66 patients (31 males and 35 females) withidiopathic Parkinson disease. Majority of the patients manifested with Tremor Dominant (50%) subtype, followed by Early Disease Onset (34.8%), and Non-Tremor Dominant (15.2%). Sixteen (16) out of 66 patients (24.2%) have ICD symptoms with the following incidence rates: hobbyism/ punding 56.25%, compulsive eating 50%, hypersexuality 18.75%, compulsive shopping 18.75, Dopamine dysregulation syndrome 18.75%, and gambling 12.5%. Overall average QUIP-RS score is 5.42. There is significant association of PD duration with occurrence of ICD symptoms; the longer the PD duration, the higher risk of having ICD symptoms (x2 20.41; p = 0.026). Patients with higher mean modified Hoehn and Yahr stage (2.66±0.94), t 2.735, df 64, p 0.008, have much higher incidence of ICD symptoms. Conclusion: Filipino patients with idiopathic Parkinson disease who are majority onlevodopa + carbidopa therapy may develop impluse control disorders (ICDs). Other contributory factors in development of ICDs include longer duration of PD and higher mean Modified Hoehn and Yahr stage.
Aug 2016 DOI 10.14302/issn.2470-5020.jnrt-15-750
Adam Thrasher TimothyCorresponding author
Center for Neuromotor and Biomechanics Research, University of Houston, Houston, TX, USA
Background To quantify the underlying rhythmic patterns observed in surface electromyography (SEMG) in patients with Parkinson’s Disease (PD), to compare rhythmicity of PD gait with normal gait, and to compare overground walking to treadmill gait. Methods Eight individuals with idiopathic PD, and ten individuals with no history of neurological disorders participated. SEMG was recorded from the vastus lateralis, tibialis anterior, lateral gastrocnemius and biceps femoris muscles bilaterally. Each participant performed two trials of overground walking and two trials of treadmill walking at a self-selected comfortable walking speed. SEMG was analyzed using a non-linear statistical model that identified underlying recurrent locomotor patterns, which estimated the relative contribution of central pattern generators to the observed muscle activation signals. An index of rhythmicity was determined from the statistic, R2. Results The rhythmicity of PD gait was significantly higher than that of normal gait (p = .0458). There was also a significant difference between the rhythmicity of overground walking and treadmill walking (p = .0097). Conclusions Individuals with PD appear to walk with muscle activation patterns that are more rhythmic than normal. This suggests that there is more stride-to-stride consistency, and there are fewer postural adjustments and responses to perturbations. We also found that treadmill gait was more rhythmic than overground walking. These findings, although preliminary, challenge the paradigm and current approach to gait retraining of patients with PD.
Jul 2021 DOI 10.14302/issn.2577-2279.ijha-21-3869
Jain JuliCorresponding author
Neuroscience Research Lab, Department of Zoology, School of Biological Sciences, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar – 470003 (MP), India.
Rotenone is well known environmental neurotoxin used to induce Parkinson’s disease (PD) model. Numerous studies are investigated its toxicity on the brain but few studies are available that examined its toxicity on the liver and kidney. Therefore, the main aim of the present work was to explore the toxicity of rotenone on the liver and kidney and its protection through quercetin. Administration of rotenone orally at the dose of (5mg/kg b.w daily for 60 days) caused a significant increase in the levels of liver function and renal function biomarkers as compared to controls. A significant increase in the level of lipid peroxidation, nitric oxide, and decrease in the levels of reduced glutathione, reduction in the activities of catalase and superoxide dismutase were observed in the liver and kidney as compared to control. The histopathological and SEM study in rotenone-treated mice showed alteration and signs of inflammation in the liver and kidney. While co-treatment of quercetin orally (30 mg/kg b.w for 60 days) together with rotenone, reversed the above parameters. In conclusion, rotenone significantly damages the liver and kidney, and the administration of quercetin along with rotenone shown a protective role. This study provides a new insight into where rotenone-induced liver and kidney dysfunction could be successfully protected by quercetin.
Jan 2019 DOI 10.14302/issn.2641-5526.jmid-18-2529
Luis Fernández-Martínez JuanCorresponding author
Group of Inverse Problems, Optimization and Machine Learning. Department of Mathematics. C/ Federico García Lorca, 18. 33007 Oviedo. University of Oviedo. Spain
Discrimination of case-control status based on gene expression differences has potential to identify novel pathways relevant to neurodegenerative diseases including Parkinson’s disease (PD). In this paper we applied two different novel algorithms to predict dysregulated pathways of gene expression across several different regions of the brain in PD and controls. The Fisher’s ratio sampler uses the Fisher’s ratio of the most discriminatory genes as prior probability distribution to sample the genetic networks and their likelihood (accuracy) was established via Leave-One-Out-Cross Validation (LOOCV). The holdout sampler finds the minimum-scale signatures corresponding to different random holdouts, establishing their likelihood using the validation dataset in each holdout. Phenotype prediction problems have by genesis a very high underdetermined character. We used both approaches to sample different lists of genes that optimally discriminate PD from controls and subsequently used gene ontology to identify pathways affected by disease. Both algorithms identified common pathways of Insulin signaling, FOXA1 Transcription Factor Network, HIF-1 Signaling, p53 Signaling and Chromatin Regulation/Acetylation. This analysis provides new therapeutic targets to treat PD.
May 2016 DOI 10.14302/issn.2470-5020.jnrt-15-908
Kaya YaseminCorresponding author
Ordu University Medical School, Department of Internal Medicine, Ordu, Turkey
Objective: We aimed to investigate homocysteine levels and carotid intima-media thickness (CIMT) in Parkinson’s Disease (PD), to determine relationship of these parameters and as well as to determine whether CIMT in patients with PD was associated to age, disease duration, age of disease onset, stage, the Unified Parkinson Disease rating scale (UPDRS), the drugs used in therapy. Methods: The study population consisted of 55 PD patients (37 male) and 25 healty subjects. The severity of neurological impairment was assessed with UPDRS and the Hoehn-Yahr scale. CIMT and homocysteine levels were measured. Anti-parkinsonian treatments were recorded and the total daily dose of levodopa was calculated for each patient. Results: Homocysteine levels were significantly higher in the patient group compared to the control group (p=0.002). A positive correlation was found between CIMT and homocysteine (r=0.29 p=0.03), but no a relationship between CIMT and UPDRS scores, disease duration, age of disease onset, and stage. Mean levodopa dosage did not predict CIMT 0.6 mm (AUC: 0.546, 95%CI 0.372-0.720, p=0.59). Homocysteine 14 µmol/l predicted CIMT 0.6 mm with 64% sensitivity and 69% specificity (AUC: 0.654, 95%CI 0.488-0.819, p=0.07). Dıscussion: This study revealed that homocysteine levels in levodopa + dopa decarboxylase enzyme inhibitor (DDEI) group were increased which was correlated with a mild increasement of CMIT. This might indicate to the importance of clinical and radiological follow up of PD patients who are under treatment of levodopa + DDEI. Conclusion: Our Findings May Suggest The Role Of CIMT As A Meaningful Clinical Marker For Follow-Up Of Patients With PD