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https://www.readbyqxmd.com/read/29156716/using-droplet-digital-pcr-to-analyze-mycn-and-alk-copy-number-in-plasma-from-patients-with-neuroblastoma
#1
Marco Lodrini, Annika Sprüssel, Kathy Astrahantseff, Daniela Tiburtius, Robert Konschak, Holger N Lode, Matthias Fischer, Ulrich Keilholz, Angelika Eggert, Hedwig E Deubzer
The invasive nature of surgical biopsies deters sequential application, and single biopsies often fail to reflect tumor dynamics, intratumor heterogeneity and drug sensitivities likely to change during tumor evolution and treatment. Implementing molecular characterization of cell-free neuroblastoma-derived DNA isolated from blood plasma could improve disease assessment for treatment selection and monitoring of patients with high-risk neuroblastoma. We established droplet digital PCR (ddPCR) protocols for MYCN and ALK copy number status in plasma from neuroblastoma patients...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156445/autologous-tenocyte-implantation-into-shoulder-tendon-pathology-in-an-elite-swimmer
#2
Laura M Schwab, Peter Blanch, Mark Young
INTRODUCTION: The use of novel bioengineer treatment techniques such as Autologous Tenocyte Implantation (ATI) have shown promising improvements in both pain ratings and functional outcomes in elbow, gluteal and shoulder tendon pathology. This case will review the injury timeline of ATI intervention in an elite male swimmer with subscapularis tendon pathology and investigate whether ATI has a concomitant healing effect associated with improved functional outcomes. METHODS: A palmaris longus tendon biopsy was performed and cells were expanded by in-vitro culture...
October 13, 2017: Physical Therapy in Sport
https://www.readbyqxmd.com/read/29156382/discovery-of-selective-dengue-virus-inhibitors-using-combination-of-molecular-fingerprint-based-virtual-screening-protocols-structure-based-pharmacophore-model-development-molecular-dynamics-simulations-and-in-vitro-studies
#3
Shaher Bano Mirza, Regina Ching Hua Lee, Justin Jang Hann Chu, Ramin Ekhteiari Salmas, Thomas Mavromoustakos, Serdar Durdagi
Dengue virus is a major issue of tropical and sub-tropical regions. The proliferation of virus results in immense number of deaths each year because of unavailability of on-shelf drugs. This issue necessitates the design of novel anti-Dengue drugs. The protease enzyme pathway is the critical target for drug design due to its significance in the replication, survival and other cellular activities of Dengue virus. Keeping in mind the worsening situation regarding Dengue virus, approximately eighteen million drug-like compounds from the ZINC small molecule database have been screened against Nonstructural Protein 3 (NS3) previously by our group...
October 24, 2017: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/29156160/treating-charcot-arthropathy-is-a-challenge-explaining-why-my-treatment-algorithm-has-changed
#4
REVIEW
Lawrence DiDomenico, Zachary Flynn, Michael Reed
Charcot deformity is a challenge that foot and ankle surgeons struggle to manage successfully. Despite the advances in knowledge, technology, and treatment modalities, limb loss is still greater than 10%. This article discusses the efficacy of conservative measures and traditional surgical approaches. It proposes a multidisciplinary team approach, medical optimization, and lifestyle modification to put the patient in the best position to heal. Also discussed is the authors' staged surgical treatment protocol to enhance outcomes and decrease the rate of limb loss...
January 2018: Clinics in Podiatric Medicine and Surgery
https://www.readbyqxmd.com/read/29155942/detergent-based-decellularization-strategy-preserves-macro-and-microstructure-of-heart-valves
#5
Jessica Haupt, Georg Lutter, Stanislav N Gorb, Dan T Simionescu, Derk Frank, Jette Seiler, Alina Paur, Irma Haben
OBJECTIVES: Biological tissue has great potential to function as bioprostheses in patients for heart valve replacement. As these matrices are mainly xenogenic, the immunogenicity needs to be reduced by decellularization steps. Reseeding of bioscaffolds has tremendous potential to prevent calcification upon implantation, so intact microstructure of the material is mandatory. An optimal decellularization protocol of heart valves resulting in adequate preservation of the extracellular architecture has still not been developed...
October 9, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29155793/metabolic-support-of-excised-living-brain-tissues-during-magnetic-resonance-microscopy-acquisition
#6
Jeremy J Flint, Kannan Menon, Brian Hansen, John Forder, Stephen J Blackband
This protocol describes the procedures necessary to support normal metabolic functions of acute brain slice preparations during the collection of magnetic resonance (MR) microscopy data. While it is possible to perform MR collections on living, excised mammalian tissue, such experiments have traditionally been constrained by resolution limits and are thus incapable of visualizing tissue microstructure. Conversely, MR protocols that did achieve microscopic image resolution required the use of fixed samples to accommodate the need for static, unchanging conditions over lengthy scan times...
October 18, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29155786/isolation-and-cultivation-of-adult-rat-cardiomyocytes
#7
Franziska Nippert, Rolf Schreckenberg, Klaus-Dieter Schlüter
In an intact heart, adjacent cells influence adult cardiomyocytes. With the method of isolation and cultivation of adult cardiomyocytes, a precise investigation of the behavior of these cells under specific treatments and environments is possible. This manuscript presents a protocol for successful isolation and cultivation of adult rat ventricular cardiomyocytes (ARVC). The rat is sacrificed by cervical dislocation under deep anesthesia. Then, the heart is extracted and the aorta is uncovered. Subsequently, perfusion on the Langendorff perfusion system with calcium depletion and collagenase treatment is performed...
October 19, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29155778/a-detailed-protocol-for-physiological-parameters-acquisition-and-analysis-in-neurosurgical-critical-patients
#8
Xiang Wu, Guoyi Gao, Junfeng Feng, Qing Mao, Jiyao Jiang
Intracranial pressure (ICP) monitoring is now widely used in neurosurgical critical patients. Besides mean ICP value, the ICP derived parameters such as ICP waveform, amplitude of pulse (AMP), the correlation of ICP amplitude and ICP mean (RAP), pressure reactivity index (PRx), ICP and arterial blood pressure (ABP) wave amplitude correlation (IAAC), and so on, can reflect intracranial status, predict prognosis, and can also be used as guidance of proper treatment. However, most of the clinicians focus only on the mean ICP value while ignoring these parameters because of the limitations of the current devices...
October 17, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29155759/transplantation-of-schwann-cells-inside-pvdf-trfe-conduits-to-bridge-transected-rat-spinal-cord-stumps-to-promote-axon-regeneration-across-the-gap
#9
Yee-Shuan Lee, Siliang Wu, Treena Livingston Arinzeh, Mary Bartlett Bunge
Among various models for spinal cord injury in rats, the contusion model is the most often used because it is the most common type of human spinal cord injury. The complete transection model, although not as clinically relevant as the contusion model, is the most rigorous method to evaluate axon regeneration. In the contusion model, it is difficult to distinguish regenerated from sprouted or spared axons due to the presence of remaining tissue post injury. In the complete transection model, a bridging method is necessary to fill the gap and create continuity from the rostral to the caudal stumps in order to evaluate the effectiveness of the treatments...
November 3, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29155739/standardized-method-for-high-throughput-sterilization-of-arabidopsis-seeds
#10
Benson E Lindsey, Luz Rivero, Chistopher S Calhoun, Erich Grotewold, Jelena Brkljacic
Arabidopsis thaliana (Arabidopsis) seedlings often need to be grown on sterile media. This requires prior seed sterilization to prevent the growth of microbial contaminants present on the seed surface. Currently, Arabidopsis seeds are sterilized using two distinct sterilization techniques in conditions that differ slightly between labs and have not been standardized, often resulting in only partially effective sterilization or in excessive seed mortality. Most of these methods are also not easily scalable to a large number of seed lines of diverse genotypes...
October 17, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29155725/an-efficient-and-reproducible-protocol-for-distraction-osteogenesis-in-a-rat-model-leading-to-a-functional-regenerated-femur
#11
Martine Pithioux, Flavy Roseren, Christian Jalain, Franck Launay, Philippe Charpiot, Patrick Chabrand, Sandrine Roffino, Edouard Lamy
This protocol describes the use of a newly developed external fixator for distraction osteogenesis in a rat femoral model. Distraction osteogenesis (DO) is a surgical technique leading to bone regeneration after an osteotomy. The osteotomized extremities are moved away from each other by gradual distraction to reach the desired elongation. This procedure is widely used in humans for lower and upper limb lengthening, treatment after a bone nonunion, or the regeneration of a bone defect following surgery for bone tumor excision, as well as in maxillofacial reconstruction...
October 23, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29155723/one-step-protocol-for-evaluation-of-the-mode-of-radiation-induced-clonogenic-cell-death-by-fluorescence-microscopy
#12
Daijiro Kobayashi, Atsushi Shibata, Takahiro Oike, Takashi Nakano
Research on ionizing radiation (IR)-induced clonogenic cell death is important for understanding the effect of IR on malignant tumors and normal tissues. Here, we describe a quick and cost-effective one-step assay for simultaneously assessing the major modes of clonogenic cell death induced by IR, i.e., apoptosis, mitotic catastrophe, and cellular senescence. In this method, cells grown on a cover slip are irradiated with X-rays and stained with 4',6-diamidino-2-phenylindole dihydrochloride (DAPI). Using fluorescence microscopy, apoptosis, mitotic catastrophe, and cellular senescence are identified based on the characteristic morphologies of the DAPI-stained nuclei...
October 23, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29155673/strengthening-global-surveillance-for-antimicrobial-drug-resistant-neisseria-gonorrhoeae-through-the-enhanced-gonococcal-antimicrobial-surveillance-program
#13
Emily J Weston, Teodora Wi, John Papp
Monitoring trends in antimicrobial drug-resistant Neisseria gonorrhoeae is a critical public health and global health security activity because the number of antimicrobial drugs available to treat gonorrhea effectively is rapidly diminishing. Current global surveillance methods for antimicrobial drug-resistant N. gonorrhoeae have many limitations, especially in countries with the greatest burden of disease. The Enhanced Gonococcal Antimicrobial Surveillance Program is a collaboration between the World Health Organization and the Centers for Disease Control and Prevention...
October 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29155035/utility-of-anesthetic-block-for-endometrial-ablation-pain-a-randomized-controlled-trial
#14
Jordan S Klebanoff, Nima R Patel, Nancy L Sloan
BACKGROUND: Second-generation endometrial ablation has been demonstrated safe for abnormal uterine bleeding treatment in premenopausal women, who have completed childbearing, in short-stay surgical centers and in physicians' offices. However, no standard regarding anesthesia exists and practice varies depending on physician or patient preference and hospital policy and setting. OBJECTIVE: To evaluate whether local anesthetic, in combination with general anesthesia, affects postoperative pain and associated narcotic use following endometrial ablation...
November 15, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29155023/therapy-related-myeloid-neoplasm-in-an-18-year-old-boy-with-b-lymphoblastic-leukemia
#15
Xin Qing, Eduard Panosyan, ChangjunYue, Ping Ji, Moran Gotesman, Samuel French, Junchao Cai
BACKGROUND: Acute lymphoblastic leukemia (ALL) is the most common pediatric malignancy. Acute myeloid leukemia or myelodysplastic syndrome during the course of ALL is a rare entity. Some of these cases are therapy-related while the others occur due to lineage switch. The correct diagnosis relies on comparing the immunophenotypes and cytogenetic/molecular alterations of the myeloid neoplasm and the ALL. We present the clinical, pathologic and cytogenetic features of a case of an 18-year-old male with prior treatment for B-lymphoblastic leukemia (B-ALL) who developed therapy-related myeloid neoplasm (t-MN) 4-5years after his initial diagnosis of B-ALL...
November 16, 2017: Experimental and Molecular Pathology
https://www.readbyqxmd.com/read/29154898/evaluation-of-dynamic-contrast-enhanced-mri-biomarkers-for-stratified-cancer-medicine-how-do-permeability-and-perfusion-vary-between-human-tumours
#16
Ross A Little, Hervé Barjat, Jennifer I Hare, Mary Jenner, Yvonne Watson, Susan Cheung, Katherine Holliday, Weijuan Zhang, James P B O'Connor, Simon T Barry, Sanyogitta Puri, Geoffrey J M Parker, John C Waterton
BACKGROUND: Solid tumours exhibit enhanced vessel permeability and fenestrated endothelium to varying degree, but it is unknown how this varies in patients between and within tumour types. Dynamic contrast-enhanced (DCE) MRI provides a measure of perfusion and permeability, the transfer constant K(trans), which could be employed for such comparisons in patients. AIM: To test the hypothesis that different tumour types exhibit systematically different K(trans). MATERIALS AND METHODS: DCE-MRI data were retrieved from 342 solid tumours in 230 patients...
November 14, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/29154797/caryophyllane-sesquiterpenes-inhibit-dna-damage-by-tobacco-smoke-in-bacterial-and-mammalian-cells
#17
Silvia Di Giacomo, Lorena Abete, Rossana Cocchiola, Gabriela Mazzanti, Margherita Eufemi, Antonella Di Sotto
In the present study, the ability of the natural sesquiterpene β-caryophyllene (CRY) and its metabolite β-caryophyllene oxide (CRYO) to inhibit the genotoxicity of a condensate of cigarette smoke (CSC) was evaluated both in bacterial and mammalian cells. Also, the inhibition of the CSCmediated STAT3 phosphorylation and intracellular oxidative stress was evaluated as potential chemopreventive mechanism. Under our experimental conditions, both the sesquiterpenes exhibited antimutagenic properties, being CRY the most potent compound...
November 14, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29154785/a-rapid-enhancement-of-locomotor-sensitization-to-amphetamine-by-estradiol-in-female-rats
#18
Iva B Zovkic, Cheryl M McCormick
Estradiol moderates the effects of drugs of abuse in both humans and rodents. Estradiol's enhancement of behavioral effects resulting from high (>2.5mg/kg) doses of amphetamine is established in rats; there is less evidence for the role of estradiol in locomotor effects elicited by lower doses, which are less aversive, increase incentive motivation, involve different neural mechanisms than higher doses, and often more readily reveal group differences than do higher doses. Further, the extent to which estradiol is required for the induction versus the expression of sensitization is unknown...
November 14, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/29154553/a-randomized-trial-of-female-specific-cognitive-behavior-therapy-for-alcohol-dependent-women
#19
Elizabeth E Epstein, Barbara S McCrady, Kevin A Hallgren, Sharon Cook, Noelle K Jensen, Thomas Hildebrandt
This study compared Female-Specific Cognitive Behavioral Therapy (FS-CBT) to evidence-based, gender-neutral CBT (GN-CBT; Epstein & McCrady, 2009) for women with alcohol use disorder (AUD). Women (N = 99) with AUD, mean age 48, were randomly assigned to 12 outpatient manual-guided sessions of FS-CBT (n = 44) or GN-CBT (n = 55). Women were assessed at baseline and 3, 9 and 15 months after baseline for drinking and for specific issues common among women with AUD. A FS-CBT protocol was developed that was discriminable on treatment integrity ratings from GN-CBT...
November 20, 2017: Psychology of Addictive Behaviors: Journal of the Society of Psychologists in Addictive Behaviors
https://www.readbyqxmd.com/read/29154259/evaluation-of-coefficients-to-derive-organ-and-effective-doses-from-cone-beam-ct-cbct-scans-a-monte-carlo-study
#20
Abdullah Abuhaimed, Colin J Martin
Regular imaging is used throughout image guided radiation therapy (IGRT) to improve treatment delivery. In order for treatment procedures to be optimized, the doses delivered by imaging exposures should be taken into account. CT dosimetry methods based on the CT dose index (CTDI), measured with a 100 mm long pencil ionization chamber (CTDI<sub>100</sub>) in standard phantoms, are not designed for the cone beam CT (CBCT) imaging systems used in radiotherapy, therefore a modified version has been proposed for CBCT by the International Electrotechnical Commission (CTDI<sub>IEC</sub>)...
November 20, 2017: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
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