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https://www.readbyqxmd.com/read/29129570/poly-vinyl-pyrrolidone-lipid-based-hybrid-nanoparticles-for-anti-viral-drug-delivery
#1
K S Joshy, S Snigdha, George Anne, Kalarikkal Nandakumar, Pothen Laly A, Thomas Sabu
Zidovudine (AZT) is an antiviral drug with moderate solubility in water. It has limited application due to its short half life in vivo and consequent requirement for frequent administrations. To solve this problem, zidovudine loaded polyvinylpyrrolidone (PVP)/stearic acid (SA)-polyethylene glycol (PEG) nanoparticles (PSNPs) were developed.The hybrid nanoparticles were prepared by emulsification-solvent evaporation method. The physico chemical characterizations of the PSNPs was done by dynamic light scattering (DLS), transmission electron microscopy (TEM), and fourier transform infra-red spectroscopy (FT-IR)...
November 9, 2017: Chemistry and Physics of Lipids
https://www.readbyqxmd.com/read/29073725/radiomics-in-paediatric-neuro-oncology-a-multicentre-study-on-mri-texture-analysis
#2
Ahmed E Fetit, Jan Novak, Daniel Rodriguez, Dorothee P Auer, Christopher A Clark, Richard G Grundy, Andrew C Peet, Theodoros N Arvanitis
Brain tumours are the most common solid cancers in children in the UK and are the most common cause of cancer deaths in this age group. Despite current advances in MRI, non-invasive diagnosis of paediatric brain tumours has yet to find its way into routine clinical practice. Radiomics, the high-throughput extraction and analysis of quantitative image features (e.g. texture), offers potential solutions for tumour characterization and decision support. In the search for diagnostic oncological markers, the primary aim of this work was to study the application of MRI texture analysis (TA) for the classification of paediatric brain tumours...
October 26, 2017: NMR in Biomedicine
https://www.readbyqxmd.com/read/29069871/leptomeningeal-disease-current-diagnostic-and-therapeutic-strategies
#3
REVIEW
Gautam Nayar, Tiffany Ejikeme, Pakawat Chongsathidkiet, Aladine A Elsamadicy, Kimberly L Blackwell, Jeffrey M Clarke, Shivanand P Lad, Peter E Fecci
Leptomeningeal disease has become increasingly prevalent as novel therapeutic interventions extend the survival of cancer patients. Although a majority of leptomeningeal spread occurs secondary to breast cancer, lung cancer, and melanoma, a wide variety of malignancies have been reported as primary sources. Symptoms on presentation are equally diverse, often involving a combination of neurological deficits with the possibility of obstructive hydrocephalus. Diagnosis is definitively made via cerebrospinal fluid cytology for malignant cells, but neuro-imaging with high quality T1-weighted magnetic resonance imaging can aid diagnosis and localization...
September 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/29062710/brucellosis-a-cause-of-meningitis-not-to-neglect
#4
Abdelhay Lemnouer, Mohammed Frikh, Adil Maleb, Aziz Ahizoune, Ahmed Bourazza, Mostafa Elouennass
Brucellosis is the most frequent bacteria zoonosis in the world, with more than half a million new cases each year [1]. It is also the most significant zoonos in the edge of the Mediterranean Sea [2]. This zoonosis is capable of affecting humans and cause polymorphic clinical manifestations. In Morocco, the southern regions are the main affected areas [3]. We are reporting the observation of a 17-year-old male patient, who presented a febrile meningeal syndrome for 9 months without sensitivo-motor deficit. Tuberculosis is frequently evoked in such clinical presentations because Morocco is an endemic country, brucellosis is therefore often forgotten...
2017: IDCases
https://www.readbyqxmd.com/read/29026884/review-of-the-potential-use-of-blood-neuro-biomarkers-in-the-diagnosis-of-mild-traumatic-brain-injury
#5
REVIEW
Alastair Jones, Paul Jarvis
Head injury is a common presenting complaint amongst emergency department patients. To date, there has been no widespread utilization of neuro-biomarkers to aid the diagnosis of traumatic brain injury. This review article explores which neuro-biomarkers could be used in the emergency department in aiding the clinical diagnosis of mild traumatic brain injury. Based on the available evidence, the most promising neuro-biomarkers appear to be Glial fibrillary acidic protein (GFAP) and Ubiquitin C-Terminal Hydrolase Isozyme L1 (UCH-L1) as these show significant rises in peripheral blood levels shortly after injury and these have been demonstrated to correlate with long-term clinical outcomes...
September 2017: Clinical and Experimental Emergency Medicine
https://www.readbyqxmd.com/read/28988080/flood-susceptibility-mapping-using-novel-ensembles-of-adaptive-neuro-fuzzy-inference-system-and-metaheuristic-algorithms
#6
Seyed Vahid Razavi Termeh, Aiding Kornejady, Hamid Reza Pourghasemi, Saskia Keesstra
Flood is one of the most destructive natural disasters which cause great financial and life losses per year. Therefore, producing susceptibility maps for flood management are necessary in order to reduce its harmful effects. The aim of the present study is to map flood hazard over the Jahrom Township in Fars Province using a combination of adaptive neuro-fuzzy inference systems (ANFIS) with different metaheuristics algorithms such as ant colony optimization (ACO), genetic algorithm (GA), and particle swarm optimization (PSO) and comparing their accuracy...
February 15, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/28973869/butyrylcholinesterase-gene-transfer-in-obese-mice-prevents-postdieting-body-weight-rebound-by-suppressing-ghrelin-signaling
#7
Vicky Ping Chen, Yang Gao, Liyi Geng, Stephen Brimijoin
The worldwide prevalence of obesity is increasing at an alarming rate but treatment options remain limited. Despite initial success, weight loss by calorie restriction (CR) often fails because of rebound weight gain. Postdieting hyperphagia along with altered hypothalamic neuro-architecture appears to be one direct cause of this undesirable outcome. In response to calorie deficiency the circulating levels of the appetite-promoting hormone, acyl-ghrelin, rise sharply. We hypothesize that proper modulation of acyl-ghrelin and its receptor's sensitivity will favorably impact energy intake and reprogram the body weight set point...
October 10, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28962816/shared-decision-making-in-neurocritical-care
#8
REVIEW
Muhammad Waqas Khan, Susanne Muehlschlegel
Shared decision making is a collaborative decision-making process between health care providers and patients or their surrogates, taking into account the best scientific evidence available while considering the patient's values, goals, and preferences. Decision aids are tools enabling SDM. This article discusses shared decision making in general and in the intensive care unit in particular and facilitators and barriers for the creation and implementation of International Patient Decision Aids Standards Collaboration-compliant decision aids for the intensive care unit and neuro-intensive care unit...
November 2017: Neurologic Clinics
https://www.readbyqxmd.com/read/28961037/cns-not-an-immunoprivilaged-site-anymore-but-a-virtual-secondary-lymphoid-organ
#9
Neema Negi, Bimal K Das
The cardinal dogma of central nervous system (CNS) immunology believed brain is an immune privileged site, but scientific evidences gathered so far have overturned this notion proving that CNS is no longer an immune privileged site, but rather an actively regulated site of immune surveillance. Landmark discovery of lymphatic system surrounding the duramater of the brain, made possible by high resolution live imaging technology has given new dimension to neuro-immunology. Here, we discuss the immune privilege status of CNS in light of the previous and current findings, taking into account the differences between a healthy state and changes that occur during an inflammatory response...
September 29, 2017: International Reviews of Immunology
https://www.readbyqxmd.com/read/28814058/towards-an-ankle-neuroprosthesis-for-hybrid-robotics-concepts-and-current-sources-for-functional-electrical-stimulation
#10
S Casco, I Fuster, R Galeano, J C Moreno, J L Pons, F Brunetti
Hybrid rehabilitation robotics combine neuro-prosthetic devices (close-loop functional electrical stimulation systems) and traditional robotic structures and actuators to explore better therapies and promote a more efficient motor function recovery or compensation. Although hybrid robotics and ankle neuroprostheses (NPs) have been widely developed over the last years, there are just few studies on the use of NPs to electrically control both ankle flexion and extension to promote ankle recovery and improved gait patterns in paretic limbs...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28814003/a-springs-actuated-finger-exoskeleton-from-mechanical-design-to-spring-variables-evaluation
#11
Roberto Bortoletto, Ashley N Mello, Davide Piovesan
In the context of post-stroke patients, suffering of hemiparesis of the hand, robot-aided neuro-motor rehabilitation allows for intensive rehabilitation treatments and quantitative evaluation of patients' progresses. This work presents the design and evaluation of a spring actuated finger exoskeleton. In particular, the spring variables and the interaction forces between the assembly and the hand were investigated, in order to assess the effectiveness of the proposed exoskeleton.
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28799299/a-comparative-study-of-csf-viral-rna-loads-between-hiv-positive-patients-with-neurological-manifestations-and-neurologically-asymptomatic-hiv-patients
#12
A D Mathur, S Devesh
INTRODUCTION: There are conflicting reports in literature about correlation of CSF viral RNA levels with neurological manifestations in HIV positive patients. Many studies in animals and human subjects have shown that CSF HIV-1 RNA can be useful as a specific marker of HIV induced neuropathology. To the contrary there are studies which show that neurological disease states can occur in absence of significant increase of CSF HIV RNA. MATERIALS AND METHODS: This was a prospective study conducted at Base hospital Delhi Cantt, New Delhi, a tertiary care hospitals for HIV patients...
August 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/28792504/common-gene-network-signature-of-different-neurological-disorders-and-their-potential-implications-to-neuroaids
#13
Vidya Sagar, S Pilakka-Kanthikeel, Paola C Martinez, V S R Atluri, M Nair
The neurological complications of AIDS (neuroAIDS) during the infection of human immunodeficiency virus (HIV) are symptomized by non-specific, multifaceted neurological conditions and therefore, defining a specific diagnosis/treatment mechanism(s) for this neuro-complexity at the molecular level remains elusive. Using an in silico based integrated gene network analysis we discovered that HIV infection shares convergent gene networks with each of twelve neurological disorders selected in this study. Importantly, a common gene network was identified among HIV infection, Alzheimer's disease, Parkinson's disease, multiple sclerosis, and age macular degeneration...
2017: PloS One
https://www.readbyqxmd.com/read/28774835/current-and-emerging-biomarkers-in-tumors-of-the-central-nervous-system-possible-diagnostic-prognostic-and-therapeutic-applications
#14
REVIEW
Ishaq N Khan, Najeeb Ullah, Deema Hussein, Kulvinder S Saini
Recent investments in research associated with the discovery of specific tumor biomarkers important for efficient diagnosis and prognosis are beginning to bear fruit. Key biomarkers could potentially outweigh traditional radiological or pathological methods by enabling specificity of early detection, when coupled with tumor molecular profiling and clinical associations. Only few biomarkers are approved by regulatory authorities for Central Nervous System Tumors (CNSTs), despite the evaluation of a large number of CNST related markers during clinical trials...
July 31, 2017: Seminars in Cancer Biology
https://www.readbyqxmd.com/read/28768859/identification-of-emerging-macrophage-tropic-hiv-1-r5-variants-in-brain-tissue-of-aids-patients-without-severe-neurological-complications
#15
Maria Paz Gonzalez-Perez, Paul J Peters, Olivia O'Connell, Nilsa Silva, Carole Harbison, Sheila Cummings Macri, Saravanan Kaliyaperumal, Katherine Luzuriaga, Paul R Clapham
Untreated HIV-positive (HIV-1(+)) individuals frequently suffer from HIV-associated neurocognitive disorders (HAND), with about 30% of AIDS patients suffering severe HIV-associated dementias (HADs). Antiretroviral therapy has greatly reduced the incidence of HAND and HAD. However, there is a continuing problem of milder neurocognitive impairments in treated HIV(+) patients that may be increasing with long-term therapy. In the present study, we investigated whether envelope (env) genes could be amplified from proviral DNA or RNA derived from brain tissue of 12 individuals with normal neurology or minor neurological conditions (N/MC individuals)...
October 15, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28759752/efavirenz-loaded-nanostructured-lipid-carrier-engineered-for-brain-targeting-through-intranasal-route-in-vivo-pharmacokinetic-and-toxicity-study
#16
Varsha Pokharkar, Arpana Patil-Gadhe, Prathyusha Palla
Intranasal delivery is a potential platform that can be employed in targeting the antiretrovirals (ARVs) to reach HIV that harbors in the central nervous system. The objective of the study was to develop an optimized efavirenz (EFV) loaded nanostructured lipid carrier (ENLC) and deliver it through intranasal route for brain targeting. Factorial design (2(3)) was used to identify the key formulation variables influencing particle size and percent drug encapsulation of efavirenz in the NLC. Optimised ENLC-6 batch exhibited a spherical morphology with a mean particle size of 162nm, high drug encapsulation of 95...
October 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28706764/neuroradiological-endovascular-intervention-for-diplopia-in-a-case-of-aneurysmal-aberrant-regeneration-of-the-third-nerve
#17
Anupam C A Rao, Saumil A Shah, Benjamin W C Sim, Steven T H Yun, Neeranjali S Jain, Yashar Kalani, Ian C Francis
Aberrant regeneration of the third nerve occurs as a result of synkinetic 'miswiring' of the third nerve following its injury, such as in third cranial nerve palsy due to tumor, trauma, or aneurysm. The case presented is an elderly woman with new vertical diplopia, which led to a diagnosis of a third cranial nerve palsy, thought to be caused by a 5 mm blister aneurysm of the posterior communicating artery. However, neuro-ophthalmological evaluation diagnosed aberrant regeneration of the third nerve, with the cause of her new vertical diplopia being an ipsilateral fourth nerve palsy...
June 12, 2017: Curēus
https://www.readbyqxmd.com/read/28698149/gelatin-modified-lipid-nanoparticles-for-anti-viral-drug-delivery
#18
Joshy K S, Snigdha S, Nandakumar Kalarikkal, Laly A Pothen, Sabu Thomas
The major challenges to clinical application of zidovudine are its moderate aqueous solubility and relative short half-life and serious side effects due to frequent administrations. We investigated the preparation of zidovudine-loaded nanoparticles based on lipids which were further modified with the polymer gelatin. Formulation and stability of the modified nanoparticles were analysed from the physico-chemical characterizations. The interactions of nanoparticles with blood components were tested by haemolysis and aggregation studies...
October 2017: Chemistry and Physics of Lipids
https://www.readbyqxmd.com/read/28669033/monitoring-the-brain-after-cardiac-arrest-a-new-era
#19
REVIEW
Niraj Sinha, Sam Parnia
PURPOSE OF REVIEW: Of the approximately 350,000 out-of-hospital, and 750,000 after in-hospital cardiac arrest (CA) events in the US annually approximately 5-9% and 20% respectively may achieve return of spontaneous circulation (ROSC) after attempted cardiopulmonary resuscitation (CPR). Up to 2/3 of these initial survivors may go on die in the subsequent 24-72 hours after ROSC due to a combination of (1) on-going cerebral injury, (2) myocardial dysfunction and (3) massive systemic inflammatory response...
August 2017: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/28646838/immune-response-cytokines-as-potential-biomarkers-for-ddt-induced-neurodegeneration
#20
Héctor Luis Maldonado-Pérez, Judith Graber, Mark Gregory Robson
Background: The world incidence rate of Alzheimer’s Disease (AD) is 64 cases per 1,000 individuals. Due to the aging population, the prevalence of AD is however increasing and yet, little remains known about the etiology of AD. Objective: Previous studies suggested relationships between AD, neuro-inflammation and organochloride pesticide exposures, therefore, we aimed to study the association between DDT and possible biomarkers of AD. Materials and Methods: We explored literature on inflammation, pesticide exposure and biomarkers associated with AD...
2017: Roczniki Państwowego Zakładu Higieny
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