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https://www.readbyqxmd.com/read/29768105/identification-of-a-recurrent-lmo7-braf-fusion-in-papillary-thyroid-carcinoma
#1
Huiling He, Wei Li, Pearlly Yan, Ralf Bundschuh, Jackson A Killian, Jadwiga Labanowska, Pamela Brock, Rulong Shen, Nyla A Heerema, Albert de la Chapelle
BACKGROUND: The BRAFV600E mutation is the most common driver in papillary thyroid carcinoma (PTC) tumors. In recent years, gene fusions have also been recognized as important drivers of cancer in PTC. Previous studies have suggested that thyroid tumors with fusion genes frequently display an aggressive course. These observations prompted further exploration of gene fusions in PTC tumors. The aim was to search for previously unrecognized gene fusions using thyroid tissue samples from PTC patients...
May 16, 2018: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/29761313/genomewide-dna-methylation-responses-in-patients-with-%C3%AE-thalassemia-treated-with-yisui-shengxue-granules
#2
Yan-Ling Cheng, Xin-Hua Zhang, Yu-Wen Sun, Wen-Juan Wang, Jie Huang, Na-Li Chu, Su-Ping Fang, Zhi-Kui Wu
OBJECTIVE: To examine the clinical effects of Yisui Shengxue Granules () in the treatment of β-thalassemia and explore its mechanism on DNA methylation levels. METHODS: A randomized placebo-controlled double-blinded trial was conducted. Forty patients with β-thalassemia were recruited and distributed randomly by envelope method into an experimental group and a control group, 20 patients in each group. The patients were given Yisui Shengxue Granules in the experimental group and placebo in the control group (12 g/bag three times a day) during a 3-month intervention...
May 3, 2018: Chinese Journal of Integrative Medicine
https://www.readbyqxmd.com/read/29760189/incidence-and-prevalence-of-sporadic-and-hereditary-mtc-in-denmark-1960-2014-a-nationwide-study
#3
Jes Sloth Mathiesen, Jens Peter Kroustrup, Peter Vestergaard, Kirstine Stochholm, Per Løgstrup Poulsen, Åse Krogh Rasmussen, Ulla Feldt-Rasmussen, Sten Schytte, Stefano Christian Londero, Henrik Baymler Pedersen, Christoffer Holst Hahn, Bjarki Ditlev Djurhuus, Jens Bentzen, Sören Möller, Mette Gaustadnes, Maria Rossing, Finn Cilius Nielsen, Kim Brixen, Anja Lisbeth Frederiksen, Christian Godballe
Recent studies have shown a significant increase in the temporal trend of medullary thyroid carcinoma (MTC) incidence. However, it remains unknown to which extent sporadic medullary thyroid carcinoma (SMTC) and hereditary MTC (HMTC) affects the MTC incidence over time. We conducted a nationwide retrospective study using previously described RET and MTC cohorts combined with review of medical records, pedigree comparison and relevant nationwide registries. The study included 474 MTC patients diagnosed in Denmark between 1960 and 2014...
May 14, 2018: Endocrine Connections
https://www.readbyqxmd.com/read/29759226/a-novel-electrochemiluminescence-resonance-energy-transfer-system-of-luminol-graphene-quantum-dot-composite-and-its-application-in-h-2-o-2-detection
#4
Kaile Tian, Dejian Li, Tingting Tang, Fei Nie, Yang Zhou, Jianxiu Du, Jianbin Zheng
Luminol-nitrogen doped graphene quantum dot (luminol-NGQDs) nanocomposite was synthesized and a novel electrochemiluminescence resonance energy transfer (ECL-RET) process occurred between luminol as the donor and NGQDs as the acceptor in the composite. This ECL-RET effect helped luminol-NGQDs composite produced an anodic ECL signal without coreactants. The ECL-RET mechanism was also studied based on the fluorescence spectra, the ultraviolet-visible absorption spectra and the electrochemiluminescence (ECL) spectra...
August 1, 2018: Talanta
https://www.readbyqxmd.com/read/29749533/egf-upregulates-rfpl3-and-htert-via-the-mek-signaling-pathway-in-non%C3%A2-small-cell-lung-cancer-cells
#5
Chuan Lin, Yu Qin, Hua Zhang, Ming-Yang Gao, Yan-Fu Wang
Activation of the epidermal growth factor receptor (EGFR) during tumor development can trigger the MEK signaling pathway. In the present study, we investigated the MEK signaling pathway in non‑small cell lung cancer (NSCLC) cells with respect to the effect of epidermal growth factor (EGF) on expression of Ret finger protein like 3 (RFPL3) and human telomerase reverse transcriptase (hTERT), and the effect of RFPL3 overexpression on other MEK signaling proteins. In vitro, A549 and H1299 cells were treated with different concentrations of EGF for 24 h or 48 h...
May 8, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29743240/control-of-mitochondrial-superoxide-production-by-reverse-electron-transport-at-complex-i
#6
Ellen L Robb, Andrew R Hall, Tracy A Prime, Simon Eaton, Marten Szibor, Carlo Viscomi, Andrew M James, Michael P Murphy
The generation of mitochondrial superoxide (O2 •- ) by reverse electron transport (RET) at complex I causes oxidative damage in pathologies such as ischemia reperfusion injury, but also provides the precursor to H2 O2 production in physiological mitochondrial redox signaling. Here, we quantified the factors that determine mitochondrial O2 •- production by RET in isolated heart mitochondria. Measuring mitochondrial H2 O2 production at a range of Δp values and for several CoQ and NADH pool redox states obtained with the uncoupler p-trifluoromethoxyphenylhydrazone, we show that O2 •- production by RET responds to changes in O2 concentration, the magnitude of the proton-motive force (Δp), and the redox states of the coenzyme Q (CoQ) and NADH pools...
May 9, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29743166/exploiting-insights-on-the-ret-receptor-for-personalized-cancer-medicine
#7
Lois M Mulligan
The focus of precision cancer medicine is the use of patient genetic signatures to predict disease occurrence and course and tailor approaches to individualized treatment to improve patient outcomes. The RET receptor tyrosine kinase represents a paradigm for the power of personalized cancer management to change cancer impact and improve quality of life. Oncogenic activation of RET occurs through several mechanisms including activating mutations and increased or aberrant expression. Activating RET mutations found in the inherited cancer syndrome multiple endocrine neoplasia 2 permit early diagnosis, predict disease course, and guide disease management to optimize patient survival...
May 9, 2018: Endocrine-related Cancer
https://www.readbyqxmd.com/read/29729414/semi-mechanistic-pharmacokinetic-pharmacodynamic-model-of-three-pegylated-rhuepo-and-ior%C3%A2-epocim-in-new-zealand-rabbits
#8
G Reynaldo-Fernández, J Solozábal, D Amaro, E M Fernández-Sánchez, L Rodríguez-Vera, M Bermejo, V Mangas-Sanjuan, I F Troconiz
Marketed formulations of erythropoietin (EPO) ior®EPOCIM, MIRCERA® and two newly developed pegylated-EPO analogues (PEG-EPO 32 and 40 kDa) formulations were intravenously administered to New Zealand rabbits. A semi-mechanistic Pharmacokinetic/Pharmacodynamic (PK/PD) model describing in a simultaneous and integrated form the time course of reticulocytes, red blood cells and hemoglobin was built to account for the time course of hematopoiesis stimulation after erythropoietin administration. Data analysis was performed based on the population approach with the software NONMEM version 7...
May 2, 2018: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29722584/no-difference-between-the-effects-of-supplementing-with-soy-protein-versus-animal-protein-on-gains-in-muscle-mass-and-strength-in-response-to-resistance-exercise
#9
Mark Messina, Heidi Lynch, Jared M Dickinson, Katharine E Reed
Much attention has been given to determining the influence of total protein intake and protein source on gains in lean body mass (LBM) and strength in response to resistance exercise training (RET). Acute studies indicate that whey protein, likely related to its higher leucine content, stimulates muscle protein synthesis (MPS) to a greater extent than proteins such as soy and casein. Less clear is the extent to which the type of protein supplemented impacts strength and LBM in longer term studies (≥6 weeks)...
May 3, 2018: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29721781/implicit-video-feedback-produces-positive-changes-in-landing-mechanics
#10
Tijana Popovic, Shane V Caswell, Anne Benjaminse, Tarique Siragy, Jatin Ambegaonkar, Nelson Cortes
BACKGROUND: Implicit (IF) and explicit (EF) feedback are two motor learning strategies demonstrated to alter movement patterns. There is conflicting evidence on which strategy produces better outcomes. The purpose of this study was to examine the effects of reduced IF and EF video feedback on lower extremity landing mechanics. METHODS: Thirty participants (24 ± 2 years, 1.7 ± 0.1 m, 70 ± 11 kg) were randomly assigned to three groups: IF (n = 10), EF (n = 10), and control (CG) (n = 10)...
May 2, 2018: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/29721199/rapid-methods-to-create-a-positive-control-and-identify-the-pax8-ppar%C3%AE-rearrangement-in-fna-thyroid-samples-by-molecular-biology
#11
Emilia Vuttariello, Elio Biffali, Raimondo Pannone, Anna Capiluongo, Mario Monaco, Valentina Sica, Concetta Aiello, Marco Matuozzo, Maria Grazia Chiofalo, Gerardo Botti, Gennaro Chiappetta
Thyroid cancer is the most common malignancy of the endocrine system and includes well-differentiated forms, namely papillary and follicular carcinomas, and the poorly differentiated and undifferentiated forms that result from the transformation of thyroid follicular cells (anaplastic carcinomas). Notably, 5-10% of all thyroid cancers are medullary thyroid cancers that arise from parafollicular cells also known as C cells. The most common genetic mutations in papillary and follicular thyroid cancers are point mutations of the BRAF or RAS genes, while the most common chromosomal alterations are RET/PTC and PAX8/PPARγ rearrangements...
April 10, 2018: Oncotarget
https://www.readbyqxmd.com/read/29717360/electrochemiluminescence-based-competitive-immunoassay-for-sudan-i-by-using-gold-functionalized-graphitic-carbon-nitride-and-au-cu-alloy-nanoflowers
#12
Wanlu Chen, Xun Yao, Xinchun Zhou, Kang Zhao, Anping Deng, Jianguo Li
A flower-like Au/Cu alloy nanocomposite (Au/Cu NFs) was synthesized and used in an electrochemiluminescence (ECL) based method for sensitive determination of the dye Sudan I. The Au-g-C3 N4 nanosheets as an ECL emitter were prepared by electrostatic adsorption between gold nanoparticles and g-C3 N4 . They form a film on a glassy carbon electrode (GCE) and then can be connected with Sudan I antigen via gold-nitrogen bond and amidation reactions. The Au/Cu NFs combined with Sudan I antibody also via the Au-N bond and was introduced into the modified GCE by specific recognition between the antibody and the antigen...
May 1, 2018: Mikrochimica Acta
https://www.readbyqxmd.com/read/29705216/effect-of-minimally-invasive-endotracheal-tube-suctioning-on-physiological-indices-in-adult-intubated-patients-an-open-labelled-randomised-controlled-trial
#13
Mahdi Shamali, Mohammad Abbasinia, Birte Østergaard, Hanne Konradsen
BACKGROUND: Endotracheal tube suctioning (ETS) is one of the most frequent procedures performed by nurses in intensive care units. Nevertheless, some suctioning practices are still being performed that do not provide any benefit for patients. OBJECTIVES: To investigate the effects of minimally invasive ETS (MIETS) versus routine ETS (RETS) on physiological indices in adult intubated patients. METHODS: In this single centre parallel randomised controlled, open label trial, 64 adult intubated patients in the four intensive care units of Alzahra University hospital, Isfahan, Iran, were randomly allocated to a MIETS or a RETS group...
April 25, 2018: Australian Critical Care: Official Journal of the Confederation of Australian Critical Care Nurses
https://www.readbyqxmd.com/read/29702406/oxygen-dependence-of-mitochondrial-ros-production-as-detected-by-amplex-red-assay
#14
Vera G Grivennikova, Alexandra V Kareyeva, Andrei D Vinogradov
The initial rates of superoxide plus hydrogen peroxide (ROS) generation by intact or permeabilized rat heart mitochondria and coupled inside-out bovine heart submitochondrial particles (SMP) oxidizing NAD-dependent substrates, NADH, and succinate were measured by detecting resorufin formation in the Amplex Red assay at various oxygen concentrations. Linear dependences of the initial rates on oxygen concentration within the range of ~125-750 μM were found for all significant mitochondrial generators, i.e...
April 14, 2018: Redox Biology
https://www.readbyqxmd.com/read/29695833/chronic-expression-of-wild-type-ret-receptor-in-the-mammary-gland-induces-luminal-tumors-that-are-sensitive-to-ret-inhibition
#15
Albana Gattelli, Martín E García Solá, Tim C Roloff, Robert D Cardiff, Edith C Kordon, Lewis A Chodosh, Nancy E Hynes
The receptor tyrosine kinase Ret, a key gain-of-function mutated oncoprotein in thyroid carcinomas, has recently been implicated in other cancer types. While Ret copy number gains and mutations have been reported at low frequencies in breast tumors, we and others have reported that Ret is overexpressed in about 40% of human tumors and this correlates with poor patient prognosis. Ret activation regulates numerous intracellular pathways related to proliferation and inflammation, but it is not known whether abnormal Ret expression is sufficient to induce mammary carcinomas...
April 26, 2018: Oncogene
https://www.readbyqxmd.com/read/29689503/electrochemiluminescence-quenching-of-luminol-by-cus-in-situ-grown-on-reduced-graphene-oxide-for-detection-of-n-terminal-pro-brain-natriuretic-peptide
#16
Xiaojian Li, Peng Lu, Bin Wu, Yaoguang Wang, Huan Wang, Bin Du, Xuehui Pang, Qin Wei
A novel electrochemiluminescence (ECL) signal-off strategy based on CuS in situ grown on reduced graphene oxide (CuS-rGO) quenching luminol/H2 O2 system was firstly proposed. Luminol was grafted on the surface of Au@Fe3 O4 -Cu3 (PO4 )2 nanoflowers (Luminol-Au@Fe3 O4 -Cu3 (PO4 )2 ) which exhibited excellent catalytic effect towards the reduction of H2 O2 to enhance the ECL intensity of luminol. Cu3 (PO4 )2 nanoflowers showed large surface area which can immobilize more Fe3 O4 and Au nanoparticles. The quenching mechanism of CuS-rGO was due to ECL resonance energy transfer (RET)...
April 17, 2018: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/29688429/ef24-a-curcumin-analog-and-zstk474-emphasizes-the-effect-of-cabozantinib-in-medullary-thyroid-cancer
#17
Loris Bertazza, Francesca Sensi, Elisabetta Cavedon, Sara Watutantrige-Fernando, Simona Censi, Jacopo Manso, Federica Vianello, Eric Casal Ide, Maurizio Iacobone, Raffaele Pezzani, Caterina Mian, Susi Barollo
XL184 is a small-molecule kinase inhibitor recently included in first-line systemic therapy for patients with advanced, progressive medullary thyroid cancer (MTC). EF24 is a curcumin analog with a high bio-availability, and ZSTK474 is an inhibitor of the PI3K signaling pathway. We investigated the effect of these compounds, alone and in combination, in two RET-mutated TT and MZ-CRC-1 MTC cell lines, and in six mostly RET wild-type human MTC primary cultures. Low IC50 values demonstrated the efficacy of the drugs, while the Combination Index revealed a significant synergistic effect of combinations of XL184+ZSTK474 and XL184+EF24...
April 23, 2018: Endocrinology
https://www.readbyqxmd.com/read/29684080/unexpected-cancer-predisposition-gene-variants-in-cowden-syndrome-and-bannayan-riley-ruvalcaba-syndrome-patients-without-underlying-germline-pten-mutations
#18
Lamis Yehia, Ying Ni, Kaitlin Sesock, Farshad Niazi, Benjamin Fletcher, Hannah Jin Lian Chen, Thomas LaFramboise, Charis Eng
Patients with heritable cancer syndromes characterized by germline PTEN mutations (termed PTEN hamartoma tumor syndrome, PHTS) benefit from PTEN-enabled cancer risk assessment and clinical management. PTEN-wildtype patients (~50%) remain at increased risk of developing certain cancers. Existence of germline mutations in other known cancer susceptibility genes has not been explored in these patients, with implications for different medical management. We conducted a 4-year multicenter prospective study of incident patients with features of Cowden/Cowden-like (CS/CS-like) and Bannayan-Riley-Ruvalcaba syndromes (BRRS) without PTEN mutations...
April 2018: PLoS Genetics
https://www.readbyqxmd.com/read/29683817/the-etv6-ret-gene-fusion-is-found-in-etv6-rearranged-low-grade-sinonasal-adenocarcinoma-without-ntrk3-involvement
#19
Simon Andreasen, Katalin Kiss, Linea C Melchior, Jan Laco
No abstract text is available yet for this article.
April 20, 2018: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29683733/cep55-overexpression-causes-male-specific-sterility-in-mice-by-suppressing-foxo1-nuclear-retention-through-sustained-activation-of-pi3k-akt-signaling
#20
Debottam Sinha, Murugan Kalimutho, Josephine Bowles, Ai-Leen Chan, D Jo Merriner, Amanda L Bain, Jacinta L Simmons, Raimundo Freire, J Alejandro Lopez, Robin M Hobbs, Moira K O'Bryan, Kum Kum Khanna
Spermatogenesis is a dynamic process involving self-renewal and differentiation of spermatogonial stem cells, meiosis, and ultimately, the differentiation of haploid spermatids into sperm. Centrosomal protein (CEP)-55 is necessary for somatic cell abscission during cytokinesis. It facilitates equal segregation of cytoplasmic contents between daughter cells by recruiting endosomal sorting complex required for transport machinery (ESCRT) at the midbody. In germ cells, CEP55, in partnership with testes expressed-14 protein (TEX14), has also been shown to be an integral component of intercellular bridge before meiosis...
April 17, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
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