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https://www.readbyqxmd.com/read/28110508/on-an-enhanced-rank-preserving-structural-failure-time-model-to-handle-treatment-switch-crossover-and-dropout
#1
Lingling Li, Shijie Tang, Liewen Jiang
It is very challenging to estimate the comparative treatment effect between a treatment therapy and a control therapy on overall survival in the presence of treatment crossover, switch to an alternative non-study therapy, and non-random patient dropout. Existing methods (e.g., intent-to-treat and per-protocol) are known to be biased. We proposed two new estimators to address these analytical challenges and evaluated their performance via a comprehensive simulation study. The new estimators were constructed by combining an enhanced rank-preserving structural failure time model and the inverse probability censoring weighting approach...
January 22, 2017: Statistics in Medicine
https://www.readbyqxmd.com/read/28110479/epigallocatechin-3-o-gallate-modulates-global-microrna-expression-in-interleukin-1%C3%AE-stimulated-human-osteoarthritis-chondrocytes-potential-role-of-egcg-on-negative-co-regulation-of-microrna-140-3p-and-adamts5
#2
Zafar Rasheed, Naila Rasheed, Osama Al-Shaya
PURPOSE: MicroRNAs (miRNAs) are short, non-coding RNAs involved in almost all cellular processes. Epigallocatechin-3-O-gallate (EGCG) is a green tea polyphenol and is known to exert anti-arthritic effects by inhibiting genes associated with osteoarthritis (OA). This study was undertaken to investigate the global effect of EGCG on interleukin-1β (IL-1β)-induced expression of miRNAs in human chondrocytes. METHODS: Human chondrocytes were derived from OA cartilage and then treated with EGCG and IL-1β...
January 21, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/28110462/endoluminal-and-interstitial-brachytherapy-for-the-treatment-of-gastrointestinal-malignancies-a-systematic-review
#3
REVIEW
Sujana Gottumukkala, Vasu Tumati, Brian Hrycushko, Michael Folkert
Radiation therapy is an integral component in the multimodality management of many gastrointestinal (GI) cancers at all stages of clinical presentation. With recent advances in technology and radiation delivery, external beam radiation therapy (EBRT) can be delivered with reduced toxicity. However, despite these advances, EBRT doses are still limited by the presence of radiosensitive serial structures near clinical targets in the GI tract. Relative to EBRT techniques, brachytherapy techniques have a lower integral dose and more rapid fall-off, allowing for high-dose delivery with little normal tissue exposure...
January 2017: Current Oncology Reports
https://www.readbyqxmd.com/read/28110459/calcium-phosphate-ceramics-and-polysaccharide-based-hydrogel-scaffolds-combined-with-mesenchymal-stem-cell-differently-support-bone-repair-in-rats
#4
Sophie Frasca, Françoise Norol, Catherine Le Visage, Jean-Marc Collombet, Didier Letourneur, Xavier Holy, Elhadi Sari Ali
Research in bone tissue engineering is focused on the development of alternatives to autologous bone grafts for bone reconstruction. Although multiple stem cell-based products and biomaterials are currently being investigated, comparative studies are rarely achieved to evaluate the most appropriate approach in this context. Here, we aimed to compare different clinically relevant bone tissue engineering methods and evaluated the kinetic repair and the bone healing efficiency supported by mesenchymal stem cells and two different biomaterials, a new hydrogel scaffold and a commercial hydroxyapatite/tricalcium phosphate ceramic, alone or in combination...
February 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/28110445/non-invasive-photodynamic-therapy-in-brain-cancer-by-use-of-tb-3-doped-laf3-nanoparticles-in-combination-with-photosensitizer-through-x-ray-irradiation-a-proof-of-concept-study
#5
Min-Hua Chen, Yi-Jhen Jenh, Sheng-Kai Wu, Yo-Shen Chen, Nobutaka Hanagata, Feng-Huei Lin
The use of photodynamic therapy (PDT) in the treatment of brain cancer has produced exciting results in clinical trials over the past decade. PDT is based on the concept that a photosensitizer exposed to a specific light wavelength produces the predominant cytotoxic agent, to destroy tumor cells. However, delivering an efficient light source to the brain tumor site is still a challenge. The light source should be delivered by placing external optical fibers into the brain at the time of surgical debulking of the tumor...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28110436/contribution-of-inducible-and-neuronal-nitric-oxide-synthases-to-mitochondrial-damage-and-melatonin-rescue-in-lps-treated-mice
#6
José Antonio García, Francisco Ortiz, Javier Miana, Carolina Doerrier, Marisol Fernández-Ortiz, Iryna Rusanova, Germaine Escames, José Joaquín García, Darío Acuña-Castroviejo
NOS isoform activation is related to liver failure during sepsis, but the mechanisms driving mitochondrial impairment remain unclear. We induced sepsis by LPS administration to inducible nitric oxide synthase (iNOS(-/-)) and neuronal nitric oxide synthase (nNOS(-/-)) mice and their respective wild-type controls to examine the contribution of iNOS to mitochondrial failure in the absence of nNOS. To achieve this goal, the determination of messenger RNA (mRNA) expression and protein content of iNOS in cytosol and mitochondria, the mitochondrial respiratory complex content, and the levels of nitrosative and oxidative stress (by measuring 3-nitrotyrosine residues and carbonyl groups, respectively) were examined in the liver of control and septic mice...
January 21, 2017: Journal of Physiology and Biochemistry
https://www.readbyqxmd.com/read/28110415/antimicrobial-combination-treatment-including-ciprofloxacin-decreased-the-mortality-rate-of-pseudomonas-aeruginosa-bacteraemia-a-retrospective-cohort-study
#7
M Paulsson, A Granrot, J Ahl, J Tham, F Resman, K Riesbeck, F Månsson
Ineffective antimicrobial therapy of Pseudomonas aeruginosa bacteraemia increases mortality. Recent studies have proposed the use of antimicrobial combination therapy composed of a beta-lactam with either ciprofloxacin or tobramycin. To determine if combination therapy correlates to lower mortality and is superior compared to monotherapy, we investigated the effect of antimicrobial treatment regimens on 30-day mortality in a cohort with Pseudomonas aeruginosa bacteraemia. All cases of P. aeruginosa bacteraemia (n = 292) in southwest Skåne County, Sweden (years 2005-2010, adult population 361,112) and the whole county (2011-2012, 966,130) were identified...
January 21, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28110403/delayed-asymptomatic-coil-migrations-toward-different-arteries-after-aneurysmal-embolization-case-report
#8
Tomoya Kamide, Kouichi Misaki, Iku Nambu, Masanao Mohri, Naoyuki Uchiyama, Mitsutoshi Nakada
Delayed coil migration after endovascular treatment with detachable coils, particularly several months after treatment, is extremely rare. In this report, the authors describe a 77-year-old female in whom delayed coil migration to the anterior cerebral artery and posterior communicating artery (PCoA) developed 3 months after an uncomplicated aneurysm embolization. The patient was successfully retreated with a closed-cell stent. Computational fluid dynamics (CFD) revealed high wall shear stress (WSS) and multiple vortices in the residual cavity of the initially treated aneurysm...
January 21, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28110402/muscular-atrophy-in-severe-cases-of-cubital-tunnel-syndrome-prognostic-factors-and-outcome-after-surgical-treatment
#9
Markus Bruder, Stephan Dützmann, Nourdin Rekkab, Johanna Quick, Volker Seifert, Gerhard Marquardt
BACKGROUND: Cubital tunnel syndrome (CuTS) is a frequent neuropathy, leading to sensor-motoric dysfunction. Many patients even present with muscular atrophy as a sign for severe and long-lasting nerve impairment, usually suggesting unfavourable outcome. We analysed if those patients benefit from surgical treatment on a long-term basis. METHODS: Between January 2010 and March 2015, 42 consecutive cases of CuTS with atrophy of the intrinsic hand muscles were surgically treated in our department...
January 21, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28110401/evaluating-the-utility-of-a-scoring-system-for-lipomas-of-the-cerebellopontine-angle
#10
Carlito Lagman, Brittany L Voth, Lawrance K Chung, Timothy T Bui, Seung J Lee, Natalie E Barnette, Quinton Gopen, Isaac Yang
BACKGROUND: Cerebellopontine angle (CPA) lipomas are rare, benign, slow-growing masses. Resections are considered in symptomatic patients who are refractory to targeted medical therapies, but at those stages the lipomas have often reached considerable sizes and encompass critical neurovascular structures. The objective of this study is to develop and to evaluate the utility of a scoring system for CPA lipomas. The hypothesis is that CPA lipomas with lower scores are probably best managed with early surgery...
January 21, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28110394/chimeric-antigen-receptor-car-t-cells-lessons-learned-from-targeting-of-cd19-in-b-cell-malignancies
#11
Kevin A Hay, Cameron J Turtle
Adoptive immunotherapy with chimeric antigen receptor-modified (CAR)-T cells is a rapidly growing therapeutic approach to treating patients with refractory cancer, with over 100 clinical trials in various malignancies in progress. The enthusiasm for CAR-T cells has been driven by the clinical success of CD19-targeted CAR-T cell therapy in B-cell acute lymphoblastic leukemia, and the promising data in B-cell non-Hodgkin's lymphoma and chronic lymphocytic leukemia. Despite the success of targeting CD19 with CAR-T cells in early clinical studies, many challenges remain to improve outcomes, reduce toxicity, and determine the appropriate settings for CAR-T cell immunotherapy...
January 21, 2017: Drugs
https://www.readbyqxmd.com/read/28110391/social-media-for-patients-benefits-and-drawbacks
#12
REVIEW
Ivan De Martino, Rocco D'Apolito, Alexander S McLawhorn, Keith A Fehring, Peter K Sculco, Giorgio Gasparini
PURPOSE OF REVIEW: Social media is increasingly utilized by patients to educate themselves on a disease process and to find hospital, physicians, and physician networks most capable of treating their condition. However, little is known about quality of the content of the multiple online platforms patients have to communicate with other potential patients and their potential benefits and drawbacks. RECENT FINDINGS: Patients are not passive consumers of health information anymore but are playing an active role in the delivery of health services through an online environment...
January 21, 2017: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/28110383/risk-factors-for-recurrence-after-acute-colonic-diverticulitis-a-systematic-review
#13
REVIEW
Line Hupfeld, Jakob Burcharth, Hans-Christian Pommergaard, Jacob Rosenberg
PURPOSE: Several factors may influence the risk of recurrence after an episode of acute colonic diverticulitis. Until now, a comprehensive systematic overview and evaluation of relevant risk factors have not been presented. This review aimed at assembling and evaluating current evidence on risk factors for recurrence after conservatively treated acute colonic diverticulitis. METHODS: PubMed, Embase, and Cochrane databases were searched for studies evaluating risk factors for recurrence after acute diverticulitis treated non-surgically defined as antibiotic treatment, percutaneous abscess drainage, or by observation...
January 22, 2017: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/28110375/hepatitis-e-virus-genotype-4-sequences-detected-in-sewage-from-treatment-plants-of-china
#14
Heng Li, Wei Li, Ruiping She, Liang Yu, Qiaoxing Wu, Jingling Yang, Fengjiao Hu, Majid Hussain Soomro, Ruihan Shi, Wenzhuo Hao, Yue Zhao, Jingjing Mao
The aim of this study was to investigate the occurrence of hepatitis E virus (HEV) in sewage samples in Shen Zhen, China. Sewage samples were collected from 152 sewage plants including livestock sewage, domestic sewage and treated sewage from May to July of 2015. Two of 152 samples were HEV positive (1.32%) from the livestock sewage plants. Partial ORF2 fragments of HEV were sequenced and a phylogenetic tree was constructed using MEGA5.1. Blast and phylogenetic analyses showed that both of these two sequences belonged to HEV Genotype 4...
January 21, 2017: Food and Environmental Virology
https://www.readbyqxmd.com/read/28110373/experiences-with-surgically-treated-primary-or-secondary-hepatic-sarcoma
#15
René Fahrner, Sandra G C Dennler, Felix Dondorf, Michael Ardelt, Falk Rauchfuss, Utz Settmacher
PURPOSE: Liver resection in hepatic sarcoma is rare, but other alternative treatment options are scarce. Surgery offers the only aggressive approach to achieve a tumour-free state. The aim of this investigation was to evaluate the outcome and survival of these patients at a single hepato-biliary university hospital. METHODS: Between January 2004 and July 2013, 896 anatomical liver resections were performed. Eleven liver resections (1.2%) were performed due to primary hepatic sarcoma or hepatic sarcoma metastases...
January 21, 2017: Langenbeck's Archives of Surgery
https://www.readbyqxmd.com/read/28110364/repair-of-sternoclavicular-joint-dislocations-with-fiberwire-%C3%A2
#16
Stefan Adamcik, Markus Ahler, Konstantinos Gioutsos, Ralph A Schmid, Gregor J Kocher
PURPOSE: Up to 50% of traumatic sternoclavicular joint (SCJ) dislocations need open reduction and fixation to prevent long-term complications and complaints. We present our preferred surgical approach for acute as well as chronic SCJ dislocations, including their outcome. METHODS: Five consecutive male patients with a median age of 27 (range 20-49) were treated for traumatic anterior (n = 2) or posterior (n = 3) SCJ dislocation. Open reduction and surgical fixation were achieved by a modified figure-of-eight sutures using Fiberwire(®)...
January 21, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28110362/adult-onset-intradural-spinal-teratoma-report-of-18-consecutive-cases-and-outcomes-in-a-single-center
#17
Wei Wan, Cheng Yang, Wangjun Yan, Tielong Liu, Xinghai Yang, Dianwen Song, Jianru Xiao
STUDY DESIGN: Eighteen consecutive patients with adult-onset intradural spinal teratoma underwent surgical treatment in our center from 1998 to 2013. BACKGROUND AND PURPOSE: Teratoma is defined as a neoplasm composed of elements derived from three germ cell layers (ectoderm, endoderm and mesoderm). Intraspinal teratoma is extremely rare and accounts for 0.2-0.5% of all spinal cord tumors. Moreover, teratoma occurs primarily in neonates and young children. Adult-onset intradural spinal teratoma is even rare...
January 21, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28110352/effects-of-methylphenidate-on-attention-in-wistar-rats-treated-with-the-neurotoxin-n-2-chloroethyl-n-ethyl-2-bromobenzylamine-dsp4
#18
Joachim Hauser, Andreas Reissmann, Thomas-A Sontag, Oliver Tucha, Klaus W Lange
The aim of this study was to assess the effects of the neurotoxin N-(2-chloroethyl)-N-ethyl-2-bromobenzylamine (DSP4) on attention in rats as measured using the 5-choice-serial-reaction-time task (5CSRTT) and to investigate whether methylphenidate has effects on DSP4-treated rats. Methylphenidate is a noradrenaline and dopamine reuptake inhibitor and commonly used in the pharmacological treatment of individuals with attention deficit/hyperactivity disorder (ADHD). Wistar rats were trained in the 5CSRTT and treated with one of three doses of DSP4 or saline...
January 21, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28110332/role-of-insulin-in-placental-transport-of-nutrients-in-gestational-diabetes-mellitus
#19
María Ruiz-Palacios, Antonio José Ruiz-Alcaraz, María Sanchez-Campillo, Elvira Larqué
BACKGROUND: Gestational diabetes mellitus (GDM) is associated with increased fetal adiposity, which may increase the risk of obesity in adulthood. The placenta has insulin receptors and maternal insulin can activate its signaling pathways, affecting the transport of nutrients to the fetus. However, the effects of diet or insulin treatment on the placental pathophysiology of GDM are unknown. SUMMARY: There are very few studies on possible defects in the insulin signaling pathway in the GDM placenta...
January 21, 2017: Annals of Nutrition & Metabolism
https://www.readbyqxmd.com/read/28110331/distinct-benefit-of-overall-survival-between-patients-with-non-small-cell-lung-cancer-harboring-egfr-exon-19-deletion-and-exon-21-l858r-substitution
#20
Nobuyuki Koyama, Yasutaka Watanabe, Yuki Iwai, Rumi Kawamura, Chihiro Miwa, Yoshiaki Nagai, Koichi Hagiwara, Shinichiro Koyama
BACKGROUND: Exon 19 deletion (Del19) and exon 21 L858R substitution (L858R), which account for 90% of epidermal growth factor receptor (EGFR) mutations as common mutations, are associated with favorable outcomes with EGFR-tyrosine kinase inhibitors (TKIs) compared with other uncommon EGFR mutations in non-small-cell lung cancer (NSCLC). However, whether there are differences in overall survival (OS) between patients with these common EGFR mutations remains controversial. METHODS: The subjects studied were 74 NSCLC patients with common EGFR mutations treated with gefitinib or erlotinib...
January 21, 2017: Chemotherapy
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