86 Omega Dr Omega Professional Center, Building B-86
Newark DE 19713
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License #: MT189845
Taxonomy Codes:207R00000X 207RC0000X
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Role of amyloid from a multiple sclerosis perspective: a literature review. - Neuroimmunomodulation
The traditional concept of multiple sclerosis (MS), that it is primarily a white matter inflammatory disease, has changed a great deal. Thanks to the recent development witnessed in MS research, a whole new idea has emerged that MS is a neurodegenerative disease, and neurodegeneration occurs rather earlier in the pathological process. This has also led to the foundation of the hypothesis that two fundamentally different diseases, Alzheimer's disease (AD) and MS, may share a common mechanism of neurodegeneration. Conventionally, amyloid is thought to be a consequence of protein misfolding and aggregation and is most notorious for its association with debilitating and chronic human diseases. Amyloid is implicated to be related with the deterioration and progression of AD. The finding of amyloid precursor protein expression in axons around the plaque in MS, as well as the correlation of amyloid-Î² (AÎ²) with different stages of MS, has clearly indicated that amyloid plays some kind of key role in MS disease pathogenesis. Excitingly, a paradoxical phenomenon of AÎ² has also been observed in several studies recently. It has been shown that amyloid might actually be helping in ameliorating the inflammatory effect in diseases like AD and MS. Amyloid imaging allows earlier diagnosis of MS by taking advantage of the relation of amyloid with MS. This will have a big impact on patient diagnosis and management. In this review I have included the findings of research studies dating from several years back to the most recent ones. Through this review I have tried to show the critical role of amyloid in MS and the importance of investigating through PET imaging.Â© 2015 S. Karger AG, Basel.
Vitamin B supplementation, homocysteine levels, and the risk of cerebrovascular disease: a meta-analysis. - Neurology
To perform a meta-analysis on the effect of lowering homocysteine levels via B vitamin supplementation on cerebrovascular disease risk.Using clinical trials published before August 2012 to assess stroke events, we used relative risks (RRs) with 95% confidence intervals (95% CIs) to measure the association between B vitamin supplementation and endpoint events using a fixed-effects model and Ï‡(2) tests. We included 14 randomized controlled trials with 54,913 participants in this analysis.We observed a reduction in overall stroke events resulting from reduction in homocysteine levels following B vitamin supplementation (RR 0.93; 95% CI 0.86-1.00; p = 0.04) but not in subgroups divided according to primary or secondary prevention measures, ischemic vs hemorrhagic stroke, or occurrence of fatal stroke. There were beneficial effects in reducing stroke events in subgroups with â‰¥3 years follow-up time, and without background of cereal folate fortification or chronic kidney disease (CKD). Some trials that included CKD patients reported decreased glomerular filtration rate with B vitamin supplementation. We conducted detailed subgroup analyses for cyanocobalamin (vitamin B12) but did not find a significant benefit regarding intervention dose of vitamin B12 or baseline blood B12 concentration. Stratified analysis for blood pressure and baseline participant medication use showed benefits with >130 mm Hg systolic blood pressure and lower antiplatelet drug use in reducing stroke risk.B vitamin supplementation for homocysteine reduction significantly reduced stroke events, especially in subjects with certain characteristics who received appropriate intervention measures.
Correlates of perceived health-related quality of life in post-treatment Lyme encephalopathy. - Psychosomatics
Marked functional impairment has been reported by patients with post-treatment Lyme disease syndrome (PTLDS).We sought to identify the clinical features that contribute most strongly to the impaired health status associated with PTLDS.Enrolled patients had a well-documented history of Lyme disease, prior treatment with at least 3 weeks with intravenous ceftriaxone, a positive IgG Western blot, and objective problems with memory. An index score to capture aggregate cognitive functioning, Short-Form 36 physical and mental component summary scores, and scores on other clinical and demographic measures were examined. Multiple linear regressions were performed to determine significant predictors of perceptions of impaired life functioning as delineated by the Short-Form 36.Fatigue was the most important contributor to perceived impairments in overall physical functioning, and fatigue and depression significantly predicted perceived impairments in overall mental functioning.Because fatigue and depression contribute prominently to reports of impaired physical functioning and mental functioning among patients with PTLDS, clinicians should assess patients for these symptoms and consider targeting these symptoms in the selection of treatment interventions. Future controlled studies should examine the effectiveness of such agents for patients with PTLDS.Â© 2013 The Academy of Psychosomatic Medicine. Published by Elsevier Inc. All rights reserved.
Reliability and validity of the Chinese version of the Scale for Assessment and Rating of Ataxia. - Chinese medical journal
The Scale for the Assessment and Rating of Ataxia (SARA) was shown to be a reliable and valid measurement for patients with spinocerebellar ataxia (SCA). The Brazilian version and the Japanese version of SARA were favorable for good reliability and validity. This study aimed to translate SARA into Chinese and test its reliability and validity in measurement of cerebellar ataxia.SARA was translated into Chinese. A total 39 patients with degeneration cerebellar ataxia were evaluated independently by two neurologists with the Chinese version of SARA. Then the patients were evaluated by one of above neurologists with International Cooperative Ataxia Rating Scale (ICARS). The statistical analyses were performed using SPSS 17.0 for Windows.The Cronbach's alpha coefficient of the Chinese version of SARA was 0.78, which represents a good internal consistence. The correlation coefficient of the Chinese version of SARA scores between the two evaluators was 0.86, illustrating that the inter-rater reliability of Chinese version of SARA was good. The correlation coefficient between the Chinese version of SARA and ICARS was 0.91, illustrating that the criterion validity of Chinese version of SARA was not bad.The Chinese version of SARA is reliable and effective for the assessment of degeneration cerebellar ataxia. Compared with ICARS, the evaluation of Chinese version of SARA is more objective, the assessment time is shortened, and the maneuverability is better.
Transplantation of human neuro-epithelial-like stem cells derived from induced pluripotent stem cells improves neurological function in rats with experimental intracerebral hemorrhage. - Neuroscience letters
Specific targeted therapy for intracerebral hemorrhage (ICH), which has high disability and case-fatality rate, is currently not available. Induced pluripotent stem cells (iPSCs) generated from somatic cells of ICH patients have therapeutic potential for individualized cerebral protection. While, whether ICH patient-originated iPSCs could differentiate into neuro-epithelial-like stem (NES) cells and whether such NES cells could improve functional recovery in the hemorrhage-injured brain are unclear. Here, we showed that fibroblasts from an ICH patient can be efficiently reprogrammed to iPSCs by lentiviral vectors carrying defined transcription factors (OCT4, SOX2, KLF4, and c-MYC). These iPSCs have the typical morphology, surface antigens, capability of self-renewal and differentiating into cell types of all three embryonic germ layers that are similar to human embryonic stem cells (hESCs). Using defined serum-free neural differentiation medium, we induced the iPSCs differentiate into NES cells. Subsequently, the NES cells from ICH patient-originated iPSCs were transplanted into the perihematoma of rats with experimental ICH injury. Intriguingly, recovery of neurological dysfunction in experimental ICH rats was observed post-NES cells graftage. Transplanted NES cells migrated to the surrounding area of hematoma, survived and differentiated into neuron-like cells. Our study demonstrates that the transplantation of human iPS-originated NES cells is an effective approach of treating ICH injury and the improvement of neural function is partially due to neuronal replacement and regeneration.Copyright Â© 2013 Elsevier Ireland Ltd. All rights reserved.
Validation of the ABCD3-I score to predict stroke risk after transient ischemic attack. - Stroke; a journal of cerebral circulation
The Age, Blood Pressure, Clinical Features, Duration, and Diabetes plus Dual TIA (ABCD(3)-I) score is recommended to predict the risk of early stroke after transient ischemic attack. The aim of this study was to validate the predictive value of the ABCD(3)-I score and compare the accuracy of the Age, Blood Pressure, Clinical Features, Duration, and Diabetes (ABCD(2)) and ABCD(3)-I scores in a Chinese population.Data were prospectively collected from patients who had transient ischemic attack, as defined by the World Health Organization time-based criteria. ABCD(2) and ABCD(3)-I scores were available within 7 days of the index transient ischemic attack. The predictive outcome was stroke occurrence at 90 days. The receiver-operating characteristic curves were plotted, and the C statistics were calculated as a measure of predictive ability. The comparison of the area under the receiver-operating characteristic curve (area under the curve) was performed by Z test.Among 239 eligible patients, the mean age was 57.4Â±13.32 years, and 40.2% of the patients were women. The incidence of stroke at 90 days was 12.1%, which ranged from 0% in patients with lower ABCD(3)-I scores (0-3) to 40.91% in those with higher scores of 8 to 13 (P for trend <0.0001). Moreover, the C statistic of ABCD(3)-I scores (0.825; 95% confidence interval, 0.752-0.898) was statistically higher than that of ABCD(2) scores (0.694; 95% confidence interval, 0.601-0.786; P<0.001).The ABCD(3)-I score had a higher predictive value than the ABCD(2) score for assessing the risk of early stroke after transient ischemic attack in a Chinese population.
Recurrent orthostatic syncope due to left atrial and left ventricular collapse after a continuous-flow left ventricular assist device implantation. - The Journal of heart and lung transplantation : the official publication of the International Society for Heart Transplantation
Left ventricular assist devices (LVADs) have become an established treatment for patients with advanced heart failure as a bridge to transplantation or for permanent support as an alternative to heart transplantation. Continuous-flow LVADs have been shown to improve outcomes, including survival, and reduce device failure compared with pulsatile devices. Although LVADs have been shown to be a good option for patients with end-stage heart failure, unanticipated complications may occur. We describe dynamic left atrial and left ventricular chamber collapse related to postural changes in a patient with a recent continuous-flow LVAD implantation.Copyright Â© 2013 International Society for Heart and Lung Transplantation. Published by Elsevier Inc. All rights reserved.
Decrease of renal aquaporins 1-4 is associated with renal function impairment in pediatric congenital hydronephrosis. - World journal of pediatrics : WJP
Renal aquaporins (AQP1-4) concentration is downregulated and is in proportion to the degree of hydronephrosis graded by ultrasound in pediatric congenital hydronephrosis (CH). However, the relationship between the expression of AQP1-4 with the changes of renal function impairment (RFI) evaluated by (99m)Tc-DTPA renal dynamic imaging is still unclear. This study aimed to investigate the relationship between AQP1-4 expression and degree of RFI in children with CH.The expression of AQP1-4 was evaluated in 45 children with unilateral ureteropelvic junction obstruction (28 boys and 17 girls, average age: 28Â±10 months) and 15 children undergoing nephrectomy for nephroblastoma (8 boys and 7 girls, average age: 26Â±8 months) by immunoblotting and immunohistochemistry. Renal function was graded into mild and severe RFI by (99m)Tc-DTPA renal dynamic imaging.One-way analysis of variance with Bonferonni's correction showed a significantly reduced protein expression of AQP1-4 in the severe RFI group compared with those in both mild RFI group and controls (AQP1: 0.52Â±0.09 vs. 0.91Â±0.06 vs. 1.23Â±0.033; AQP2: 0.68Â±0.12 vs. 1.09Â±0.06 vs. 1.52Â±0.08; AQP3: 0.59Â±0.16 vs. 0.94Â±0.08 vs. 1.31Â±0.07; AQP4: 0.64Â±0.06 vs. 1.14Â±0.07 vs. 1.61Â±0.07; P<0.001, respectively). In kidneys with severe RFI, there was a reduction in the protein concentration of all four AQP isoforms which was more pronounced compared with those seen in kidneys with mild RFI and in the controls.AQP1-4 expression is reduced in proportion with the impairment degree of renal function graded by (99m)Tc-DTPA renal dynamic imaging in human CH.
Forecasts using Box-Jenkins models for the ambient air quality data of Delhi City. - Environmental monitoring and assessment
The monthly maximum of the 24-h average time-series data of ambient air quality-sulphur dioxide (SO(2)), nitrogen dioxide (NO(2)) and suspended particulate matter (SPM) concentration monitored at the six National Ambient Air Quality Monitoring (NAAQM) stations in Delhi, was analysed using Box-Jenkins modelling approach (Box et al. 1994). Univariate linear stochastic models were developed to examine the degree of prediction possible for situations where only the past record of pollutant data are available. In all, 18 models were developed, three for each station for each of the respective pollutant. The model evaluation statistics suggest that considerably satisfactory real-time forecasts of pollution concentrations can be generated using the Box-Jenkins approach. The developed models can be used to provide short-term, real-time forecasts of extreme air pollution concentrations for the Air Quality Control Region (AQCR) of Delhi City, India.
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