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https://www.readbyqxmd.com/read/27936126/the-ns4a-cofactor-dependent-enhancement-of-hcv-ns3-protease-activity-correlates-with-a-4d-geometrical-measure-of-the-catalytic-triad-region
#1
Hamzah A Hamad, Jeremy Thurston, Thomas Teague, Edward Ackad, Mohammad S Yousef
We are developing a 4D computational methodology, based on 3D structure modeling and molecular dynamics simulation, to analyze the active site of HCV NS3 proteases, in relation to their catalytic activity. In our previous work, the 4D analyses of the interactions between the catalytic triad residues (His57, Asp81, and Ser139) yielded divergent, gradual and genotype-dependent, 4D conformational instability measures, which strongly correlate with the known disparate catalytic activities among genotypes. Here, the correlation of our 4D geometrical measure is extended to intra-genotypic alterations in NS3 protease activity, due to sequence variations in the NS4A activating cofactor...
2016: PloS One
https://www.readbyqxmd.com/read/27936076/angiogenic-capacity-of-periodontal-ligament-stem-cells-pretreated-with-deferoxamine-and-or-fibroblast-growth-factor-2
#2
Jessica Ratajczak, Petra Hilkens, Pascal Gervois, Esther Wolfs, Reinhilde Jacobs, Ivo Lambrichts, Annelies Bronckaers
Periodontal ligament stem cells (PDLSCs) represent a good source of multipotent cells for cell-based therapies in regenerative medicine. The success rate of these treatments is severely dependent on the establishment of adequate vasculature in order to provide oxygen and nutrients to the transplanted cells. Pharmacological preconditioning of stem cells has been proposed as a promising method to augment their therapeutic efficacy. In this study, the aim was to improve the intrinsic angiogenic properties of PDLSCs by in vitro pretreatment with deferoxamine (DFX; 100μM), fibroblast growth factor-2 (FGF-2; 10ng/mL) or both substances combined...
2016: PloS One
https://www.readbyqxmd.com/read/27935899/-algorithm-for-selection-of-individual-therapy-with-clopidogrel-in-vascular-surgical-practice
#3
A I Shevela, A A Slepukhina, E M Zelenskaya, T A Seredina, G I Lifshits
For treatment of patients with diseases of lower limb arteries and prevention of cardiovascular complications in high-risk patients (those with diabetes mellitus, arterial hypertension, dyslipidemia, obesity) permanent antiplatelet therapy is indicated. A problem is variable individual sensitivity to therapeutic agents. For antiplatelet therapy in patients with atherosclerosis of lower limb arteries there has been obtained an evidence-supported base concerning efficacy of long-term administration of clopidogrel preparations, unlike patients with acute coronary syndrome, for whom there has been accumulated an evidence-confirmed base of administering clopidogrel preparations, as well as ticagrelor and prasugrel in various clinical situations...
2016: Angiologii︠a︡ i Sosudistai︠a︡ Khirurgii︠a︡, Angiology and Vascular Surgery
https://www.readbyqxmd.com/read/27935898/-conservative-treatment-of-patients-with-peripheral-artery-diseases-possibilities-and-existing-problems
#4
S V Sapelkin, M R Kuznetsov
With due regard to the requirements of evidence-based medicine, the article contains a review of present-day positions concerning conservative therapy in patients with peripheral artery diseases and chronic arterial ischaemia, represented in the latest Russian and foreign consensus documents, showing importance of bringing the basic provisions of the consensus documents to the notice of practical health-care providers with the aim of working out more effective therapeutic regimens. Some sections of the guidelines regarding the duration of treatment, among the number, require definite specification with the wording of more clear-cut practical conclusions...
2016: Angiologii︠a︡ i Sosudistai︠a︡ Khirurgii︠a︡, Angiology and Vascular Surgery
https://www.readbyqxmd.com/read/27935782/wet-or-dry-a-review-of-intravenous-fluid-administration-in-anesthesia-practice
#5
Matthew D'Angelo, R Kyle Hodgen
Fluid therapy has dramatically changed since its early inception nearly 200 years ago. Administration of intravenous fluid (IVF) has evolved from a "drip" technique to the algorithmic approach of the anesthetic fluid plan, and is now moving toward Goal-Directed Fluid Therapy. As the science and culture of fluid management evolves, anesthetists must remain focused on "why" anesthetic fluid matters. The purpose of IVF administration is to support tissue perfusion and maintain euvolemia. As the evidence underlying perioperative practice matures and the science of anesthesia races to meet the evolving demands of surgery, anesthetists must align knowledge generation with the individualized needs of the patient...
January 2017: Annual Review of Nursing Research
https://www.readbyqxmd.com/read/27935610/comparison-of-nanomedicine-based-chemotherapy-photodynamic-therapy-and-photothermal-therapy-using-reduced-graphene-oxide-for-the-model-system
#6
Jingjing Liu, Kai Liu, Liangzhu Feng, Zhuang Liu, Ligeng Xu
Given the complexity of tumors, several nanomaterial-based treatment modalities like chemotherapy (CT), photodynamic therapy (PDT) and photothermal therapy (PTT) have been developed for combating cancers. However, it is still unclear which strategy is better or how to select optimal approaches for combination treatment since each strategy has been investigated under different conditions. Inspired by its good payload capacity and unique near-infrared absorption, reduced graphene oxide (rGO) was selected in this study as the carrier for loading of doxorubicin (DOX), a chemotherapy drug, and chlorin e6 (Ce6), a photosensitizer...
December 9, 2016: Biomaterials Science
https://www.readbyqxmd.com/read/27935362/dramatic-radiographic-response-resulting-in-cerebrospinal-fluid-rhinorrhea-associated-with-sunitinib-therapy-in-recurrent-atypical-meningioma-case-report
#7
Amol Raheja, Howard Colman, Cheryl A Palmer, William T Couldwell
Sunitinib is a multiple tyrosine kinase inhibitor with antiangiogenic, cytostatic, and antimigratory activity for meningiomas. A recent clinical trial of sunitinib for treatment of recurrent Grade II and III meningiomas suggested potential efficacy in this population, but only 2 patients exhibited significant radiographic response with tumor volume reduction. The authors illustrate another such case and discuss a complication related to this dramatic tumor volume reduction in aggressive skull base meningiomas...
December 9, 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27935263/new-glycemic-targets-for-patients-with-diabetes-from-the-japan-diabetes-society
#8
Eiichi Araki, Masakazu Haneda, Masato Kasuga, Takeshi Nishikawa, Tatsuya Kondo, Kohjiro Ueki, Takashi Kadowaki
In the 'Evidence-based Practice Guideline for the Treatment for Diabetes in Japan 2013', a new concept of the glycemic control in patients with diabetes in Japan has been declared from the Japan Diabetes Society. The main objective value of HbA1c was set to <7% from the perspective of preventing microvascular complications. On the other hand, the objective in cases where objectives can be attained by appropriate dietary or exercise therapy, or during pharmacotherapy without the occurrence of side effects such as hypoglycemia was set to <6%, and the objective in cases where intensification of treatment was considered difficult due to side effects such as hypoglycemia or for other reasons was set to <8%...
December 9, 2016: Journal of Diabetes Investigation
https://www.readbyqxmd.com/read/27935011/electrical-stimulation-with-non-implanted-electrodes-for-overactive-bladder-in-adults
#9
REVIEW
Fiona Stewart, Luis F Gameiro, Regina El Dib, Monica O Gameiro, Anil Kapoor, Joao L Amaro
BACKGROUND: Several options exist for managing overactive bladder (OAB), including electrical stimulation (ES) with non-implanted devices, conservative treatment and drugs. Electrical stimulation with non-implanted devices aims to inhibit contractions of the detrusor muscle, potentially reducing urinary frequency and urgency. OBJECTIVES: To assess the effects of ES with non-implanted electrodes for OAB, with or without urgency urinary incontinence, compared with: placebo or any other active treatment; ES added to another intervention compared with the other intervention alone; different methods of ES compared with each other...
December 9, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27933614/antiviral-agents-for-infectious-mononucleosis-glandular-fever
#10
REVIEW
Muireann De Paor, Kirsty O'Brien, Tom Fahey, Susan M Smith
BACKGROUND: Infectious mononucleosis (IM) is a clinical syndrome, usually caused by the Epstein Barr virus (EPV), characterised by lymphadenopathy, fever and sore throat. Most cases of symptomatic IM occur in older teenagers or young adults. Usually IM is a benign self-limiting illness and requires only symptomatic treatment. However, occasionally the disease course can be complicated or prolonged and lead to decreased productivity in terms of school or work. Antiviral medications have been used to treat IM, but the use of antivirals for IM is controversial...
December 8, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27933569/decision-making-in-clinical-practice-oral-anticoagulant-therapy-in-patients-with-non-valvular-atrial-fibrillation-and-a-single-additional-stroke-risk-factor
#11
REVIEW
Tatjana S Potpara, Nikolaos Dagres, Nebojša Mujović, Dragan Vasić, Milika Ašanin, Milan Nedeljkovic, Francisco Marin, Laurent Fauchier, Carina Blomstrom-Lundqvist, Gregory Y H Lip
Approximately 1 in 3-4 patients presenting with an ischemic stroke will also have atrial fibrillation (AF), and AF-related strokes can be effectively prevented using oral anticoagulant therapy (OAC), either with well-controlled vitamin K antagonists (VKAs) or non-vitamin K antagonist oral anticoagulants (NOACs). In addition, OAC use (both VKAs and NOACs) is associated with a 26% reduction in all-cause mortality (VKAs) or an additional 10% mortality reduction with NOACs relative to VKAs. The decision to use OAC in individual AF patient is based on the estimated balance of the benefit from ischemic stroke reduction against the risk of major OAC-related bleeding [essentially intracranial hemorrhage (ICH)]...
December 8, 2016: Advances in Therapy
https://www.readbyqxmd.com/read/27933099/treating-nonsuicidal-self-injury-nssi-in-adolescents-consensus-based-german-guidelines
#12
Paul L Plener, Romuald Brunner, Jörg M Fegert, Rebecca C Groschwitz, Tina In-Albon, Michael Kaess, Nestor D Kapusta, Franz Resch, Katja Becker
BACKGROUND: Nonsuicidal self-injury (NSSI) is a frequent and clinically relevant phenomenon in adolescence. Within Europe, Germany has one of the highest prevalence rates in youth with lifetime prevalence ranging between 25 and 35%. However, treatment guidelines for NSSI are not yet available. METHODS: Consensus based clinical guidelines were created by a working group consisting of members of eleven medical, psychological or psychotherapeutic professional national associations, and two members of patient self-help and prevention groups...
2016: Child and Adolescent Psychiatry and Mental Health
https://www.readbyqxmd.com/read/27932392/digital-gene-expression-profiling-analysis-of-dna-repair-pathways-in-colon-cancer-stem-population-of-ht29-cells
#13
Wenxue Wang, Guoxiu Zhang, Jing Yang, Huan Gu, Lei Ding, Haijing Yu, Min Yu, Qinghua Cui, Xinglai Ji, Meizhang Li
Cancer stem cells (CSCs) contribute to the relapse and development of new neoplasm lesions. While most available clinical approaches, such as chemical and radiation therapies, will kill the majority of cancer cells, they do not kill them all. Some resisting cells, like CSCs, are able to survive due to their excellent self-maintaining capabilities, even in challenging environments. In the present study, we investigated the mRNA level of DNA repair genes of colon CSCs from the HT29 cell line in response to single-strand damage and double-strand breaks, as well as the evident upregulation of key genes in base excision repair, mismatch repair, non-homologous end-joining, and homologous recombination pathways in these cells...
December 7, 2016: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/27932381/improving-the-efficiency-of-care-for-pediatric-patients-hospitalized-with-asthma
#14
Kathleen W Bartlett, Victoria M Parente, Vanessa Morales, Jillian Hauser, Heather S McLean
BACKGROUND: Asthma exacerbations are a leading cause of hospitalization among children. Despite the existence of national pediatric asthma guidelines, significant variation in care persists. At Duke Children's Hospital, we determined that our average length of stay (ALOS) and cost for pediatric asthma admissions exceeded that of our peers. Our aim was to reduce the ALOS of pediatric patients hospitalized with asthma from 2.9 days to 2.6 days within 12 months by implementing an asthma pathway within our new electronic health record...
December 8, 2016: Hospital Pediatrics
https://www.readbyqxmd.com/read/27931887/medial-prefrontal-cortex-stimulation-accelerates-therapy-response-of-exposure-therapy-in-acrophobia
#15
Martin J Herrmann, Andrea Katzorke, Yasmin Busch, Daniel Gromer, Thomas Polak, Paul Pauli, Jürgen Deckert
BACKGROUND: Animal as well as human research indicated that the ventral medial prefrontal cortex (vmPFC) is highly relevant for fear extinction learning. Recently, we showed that targeting the vmPFC with high-frequency repetitive transcranial magnetic stimulation (rTMS) in a placebo-controlled study with 45 healthy controls induced higher prefrontal activity during extinction of conditioned stimuli (CS+) in the active compared to the sham stimulated group and better extinction learning as indicated by ratings, fear potentiated startles and skin conductance responses...
November 14, 2016: Brain Stimulation
https://www.readbyqxmd.com/read/27931834/treatments-for-colorectal-liver-metastases-a-new-focus-on-a-familiar-concept
#16
REVIEW
M G Zampino, E Magni, P S Ravenda, C A Cella, G Bonomo, P Della Vigna, S Galdy, F Spada, G M Varano, G Mauri, N Fazio, F Orsi
A major challenge for the management of advanced-colorectal-cancer is the multidisciplinary approach required for the treatment of liver metastases. Reducing the burden of liver metastases with liver-directed therapy has an important impact on both survival and health-related quality of life. This paper debates the rationale and current liver-directed approaches for colorectal liver metastases based on the evidence of literature and new clinical trials. Surgery is the gold standard, when feasible, and it's the main treatment goal for patients with potentially-resectable disease as a means of prolonging progression-free survival...
December 2016: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/27931831/lifestyle-interventions-to-improve-the-quality-of-life-of-men-with-prostate-cancer-a-systematic-review-of-randomized-controlled-trials
#17
REVIEW
Julia Menichetti, Silvia Villa, Tiziana Magnani, Barbara Avuzzi, Davide Bosetti, Cristina Marenghi, Sara Morlino, Tiziana Rancati, Hein Van Poppel, Roberto Salvioni, Riccardo Valdagni, Lara Bellardita
Improving quality of life is a key issue for patients with prostate cancer (PCa). Lifestyle interventions could positively impact the quality of life of patients. However, there is no clear-cut understanding of the role of diet, exercise and risky behaviour reduction in improving the quality of life of men with PCa. The aim of this review was to systematically summarize randomized controlled trials on lifestyle in PCa patients with quality of life as main outcome. 17 trials were included. Most of them referred to exercise interventions (71%) and involved men undergoing androgen deprivation therapy (47%)...
December 2016: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/27931633/complications-of-endoscopic-resection-techniques-for-upper-gi-tract-lesions
#18
REVIEW
D Libânio, P Pimentel-Nunes, M Dinis-Ribeiro
Adverse events can occur during and after the endoscopic resection of upper gastrointestinal lesions. Their incidence can be minimized through the adoption of preventive measures and their final outcomes can be optimized through prompt identification and adequate treatment. In this evidence-based review we describe the risk factors for adverse events, preventive measures to avoid them and their management when they occur. Algorithms of action are also provided. Oesophageal strictures can be prevented with corticosteroids (either locally injected or systemically administered) and treated with endoscopic dilatation...
October 2016: Best Practice & Research. Clinical Gastroenterology
https://www.readbyqxmd.com/read/27931507/hiv-non-nucleoside-reverse-transcriptase-inhibitor-efavirenz-reduces-neural-stem-cell-proliferation-in-vitro-and-in-vivo
#19
Jingji Jin, Bethany Grimmig, James Izzo, Lecia A M Brown, Charles Hudson, Adam J Smith, Jun Tan, Paula C Bickford, Brian Giunta
The prevalence of HIV-associated neurocognitive disorders (HAND) remains high despite combination antiretroviral therapy (cART). There is evidence that neural stem cells (NSCs) can migrate to sites of brain injury such as those caused by inflammation and oxidative stress, which are pathological features of HAND. Thus, reductions in NSCs may contribute to HAND pathogenesis. Since the HIV non-nucleoside reverse transcriptase inhibitor efavirenz (EFV) has previously been associated with cognitive deficits and promotion of oxidative stress pathways, we examined its effect on NSCs in vitro as well as in C57BL/6J mice...
November 2016: Cell Transplantation
https://www.readbyqxmd.com/read/27931506/neural-stem-cells-derived-from-human-parthenogenetic-stem-cells-engraft-and-promote-recovery-in-a-nonhuman-primate-model-of-parkinsons-disease
#20
Rodolfo Gonzalez, Ibon Garitaonandia, Maxim Poustovoitov, Tatiana Abramihina, Caleb McEntire, Ben Culp, Jordan Attwood, Alexander Noskov, Trudy Christiansen-Weber, Marwa Khater, Sergio Mora-Castilla, Cuong To, Andrew Crain, Glenn Sherman, Andrey Semechkin, Louise C Laurent, John D Elsworth, John Sladek, Evan Y Snyder, D Eugene Redmond, Russell A Kern
Cell therapy has attracted considerable interest as a promising therapeutic alternative for patients with Parkinsons disease (PD). Clinical studies have shown that grafted fetal neural tissue can achieve considerable biochemical and clinical improvements in PD. However, the source of fetal tissue grafts is limited and ethically controversial. Human parthenogenetic stem cells offer a good alternative because they are derived from unfertilized oocytes without destroying potentially viable human embryos and can be used to generate an unlimited supply of neural cells for transplantation...
November 2016: Cell Transplantation
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