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https://www.readbyqxmd.com/read/28922910/clinical-study-of-vitamin-a-combined-with-vitamin-b-in-prevention-and-treatment-of-anemia-in-premature-infants
#1
Changhong Chai, Xiuhua Wang, Chunlei Hou
BACKGROUND: We explored the clinical efficacy of vitamin A combined with vitamin B in the prevention and treatment of premature infants with anemia. METHODS: 150 cases of premature infants were divided into three groups. Vitamin A combined with recombinant human erythropoietin (group A), vitamin B combined with recombinant human erythropoietin (group B), vitamin A combined with vitamin B combined with recombinant human erythropoietin treatment (recorded as group C)...
September 15, 2017: Minerva Pediatrica
https://www.readbyqxmd.com/read/28918451/quantitative-18-f-dopa-pet-ct-in-pheochromocytoma-the-relationship-between-tumor-secretion-and-its-biochemical-phenotype
#2
Vincent Amodru, Carole Guerin, Sarkis Delcourt, Pauline Romanet, Anderson Loundou, Bruna Viana, Thierry Brue, Frédéric Castinetti, Frédéric Sebag, Karel Pacak, David Taïeb
INTRODUCTION: (18)F-FDOPA illustrates the properties of uptake and storage of catecholamines in pheochromocytomas (PHEOs). Until now, the relationship between (18)F-FDOPA quantitative parameters and a PHEO secretory profile has not been specifically evaluated. MATERIALS AND METHODS: Fifty-six patients (56% females, median age: 47.5 yrs) with non-metastatic PHEO, evaluated by (18)F-FDOPA PET/CT, were included in this retrospective study. Forty-five patients had negative genetic testing (80...
September 16, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28914263/coexistent-genetic-alterations-involving-alk-ret-ros1-or-met-in-15-cases-of-lung-adenocarcinoma
#3
Zhenya Tang, Jianjun Zhang, Xinyan Lu, Wei Wang, Hui Chen, Melissa K Robinson, Joanne Cheng, Guilin Tang, L Jeffrey Medeiros
In lung cancer, targetable activating alterations in cancer genes, such as EGFR, ALK, RET, ROS1 and MET, are usually mutually exclusive. Rare lung cancer cases with coexistent alterations of EGFR and ALK or EGFR mutations with RET or ROS1 rearrangements have been reported. In this study, we report 15 patients (3 men and 12 women; 14 Caucasians and 1 African American) with ages ranging from 43 to 81 years (median 60 years) with lung adenocarcinoma in which coexistent alterations of two cancer-associated genes, including ALK, ROS1, or RET rearrangement or MET amplification were present...
September 15, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28914132/reverse-electron-transfer-results-in-a-loss-of-flavin-from-mitochondrial-complex-i-potential-mechanism-for-brain-ischemia-reperfusion-injury
#4
Anna Stepanova, Anja Kahl, Csaba Konrad, Vadim Ten, Anatoly S Starkov, Alexander Galkin
Ischemic stroke is one of the most prevalent sources of disability in the world. The major brain tissue damage takes place upon the reperfusion of ischemic tissue. Energy failure due to alterations in mitochondrial metabolism and elevated production of reactive oxygen species (ROS) is one of the main causes of brain ischemia-reperfusion (IR) damage. Ischemia resulted in the accumulation of succinate in tissues, which favors the process of reverse electron transfer (RET) when a fraction of electrons derived from succinate is directed to mitochondrial complex I for the reduction of matrix NAD(+)...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28912872/preclinical-trial-of-the-multi-targeted-lenvatinib-in-combination-with-cellular-immunotherapy-for-treatment-of-renal-cell-carcinoma
#5
Chengkuan Cai, Jingyuan Tang, Baixin Shen, Liucheng Ding, Yunpeng Shao, Zhengsen Chen, Yinchao Ma, Haoliang Xue, Zhongqing Wei
Lenvatinib is an oral, multi-targeted tyrosine kinase inhibitor of vascular endothelial growth factor receptors 1-3, fibroblast growth factor receptors 1-4, platelet-derived growth factor receptor β, RET and KIT. Cellular immunotherapy has the potential to be a highly targeted treatment, with low toxicity to normal tissues and a high capacity to eradicate tumor tissue. The present study assessed the safety, maximum tolerated dose (MTD) and preliminary antitumor activity of lenvatinib and cellular immunotherapy in a murine model of renal cell carcinoma (RCC)...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28911729/chemotherapy-and-tyrosine-kinase-inhibitors-for-medullary-thyroid-cancer
#6
REVIEW
Julien Hadoux, Martin Schlumberger
Medullary thyroid cancer (MTC) represents 3% of all clinical thyroid cancers and arises from thyroid C cells that produce calcitonin. Locally advanced or metastatic MTC requires a careful work-up including measurement of serum calcitonin and carcinoembryonic antigen, determination of their doubling time and comprehensive imaging to determine the extent of the disease, its aggressiveness, and the need for treatment. Cytotoxic chemotherapy can control tumor burden in some patients with response rates of around 20% in old series...
June 2017: Best Practice & Research. Clinical Endocrinology & Metabolism
https://www.readbyqxmd.com/read/28911727/the-molecular-basis-for-ret-tyrosine-kinase-inhibitors-in-thyroid-cancer
#7
REVIEW
Valentina De Falco, Francesca Carlomagno, Hong-Yu Li, Massimo Santoro
RET receptor tyrosine kinase acts as a mutated oncogenic driver in several human malignancies and it is over-expressed in other cancers. Small molecule compounds with RET tyrosine kinase inhibitory activity are being investigated for the targeted treatment of these malignancies. Multi-targeted compounds with RET inhibitory concentration in the nanomolar range have entered clinical practice. This review summarizes mechanisms of RET oncogenic activity and properties of new compounds that, at the preclinical stage, have demonstrated promising anti-RET activity...
June 2017: Best Practice & Research. Clinical Endocrinology & Metabolism
https://www.readbyqxmd.com/read/28911160/response-to-letter-medullary-thyroid-carcinoma-in-men2a-ata-moderate-or-high-risk-ret-mutations-do-not-predict-disease-aggressiveness
#8
Rachel K Voss, Elizabeth G Grubbs
No abstract text is available yet for this article.
September 1, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28911158/letter-to-the-editor-medullary-thyroid-carcinoma-in-men2a-ata-moderate-or-high-risk-ret-mutations-do-not-predict-disease-aggressiveness
#9
Frederic Castinetti, Nelson Whollk
No abstract text is available yet for this article.
September 1, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28911154/prognostic-significance-of-circulating-ret-m918t-mutated-tumor-dna-in-patients-with-advanced-medullary-thyroid-carcinoma
#10
Gilbert J Cote, Caitlin Evers, Mimi I Hu, Elizabeth G Grubbs, Michelle D Williams, Tao Hai, Dzifa Y Duose, Michal R Houston, Jacquelin H Bui, Meenakshi Mehrotra, Steven G Waguespack, Naifa L Busaidy, Maria E Cabanillas, Mouhammed Amir Habra, Rajyalakshmi Luthra, Steven I Sherman
Context: Interpretation of calcitonin measurement to predict the prognosis of medullary thyroid carcinoma (MTC) requires multiple measurements over an extended time period, making it an imperfect biomarker for evaluating prognosis or disease behavior. Single circulating cell-free DNA (cfDNA) values have been shown to be a valuable prognostic marker for several solid tumors. Objective: We tested the hypothesis that cfDNA containing the RET M918T mutation could be detected in the blood of patients with advanced MTC whose tumor harbored an M918T mutation and would be able to predict overall survival more reliably than calcitonin...
September 1, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28911147/kif5b-ret-rearrangement-in-a-carcinoma-of-the-thyroid-gland-a-case-report-of-a-fatal-disease
#11
David Viola, Carlotta Giani, Salvatore Mazzeo, Clara Ugolini, Raffaele Ciampi, Eleonora Molinaro, Laura Agate, Nicla Borrelli, Antonio Chella, Gabriella Fontanini, Fulvio Basolo, Rossella Elisei
Background: The diffuse sclerosing variant of papillary thyroid cancer (DSV-PTC) is a rare variant of papillary thyroid cancer (PTC) with different clinicopathological features compared with conventional PTC. Case: An advanced DSV-PTC was diagnosed in a 39-year-old man. The radioiodine posttherapeutic whole-body-scan showed only an uptake in the central neck, whereas the computerized tomography showed multiple latero-cervical and mediastinum lymph node metastases, a single and spiculated lung lesion and multiple bilateral cerebellum metastases...
September 1, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28910486/we-cannot-afford-to-lose-the-lessons-we-have-learned-col-ret-rob-lutz-s-reflections-on-a-20-year-sof-medical-career
#12
Andre Pennardt
No abstract text is available yet for this article.
2017: Journal of Special Operations Medicine: a Peer Reviewed Journal for SOF Medical Professionals
https://www.readbyqxmd.com/read/28910386/dusp5-and-dusp6-two-erk-specific-phosphatases-are-markers-of-a-higher-mapk-signaling-activation-in-braf-mutated-thyroid-cancers
#13
Camille Buffet, Karine Hecale-Perlemoine, Léopoldine Bricaire, Florent Dumont, Camille Baudry, Frédérique Tissier, Jérôme Bertherat, Beatrix Cochand-Priollet, Marie-Laure Raffin-Sanson, Françoise Cormier, Lionel Groussin
BACKGROUND: Molecular alterations of the MAPK pathway are frequently observed in papillary thyroid carcinomas (PTCs). It leads to a constitutive activation of the signalling pathway through an increase in MEK and ERK phosphorylation. ERK is negatively feedback-regulated by Dual Specificity Phosphatases (DUSPs), especially two ERK-specific DUSPs, DUSP5 (nuclear) and DUSP6 (cytosolic). These negative MAPK regulators may play a role in thyroid carcinogenesis. METHODS: MAPK pathway activation was analyzed in 11 human thyroid cancer cell lines...
2017: PloS One
https://www.readbyqxmd.com/read/28902384/-multiple-endocrine-neoplasia
#14
Ludwig Schaaf, Friedhelm Raue
Multiple endocrine neoplasia type 1 and 2 are hereditary cancer syndromes. They are characterized by the occurrence of many benign and malignant tumor types, in MEN1 parathyroid tumors, pituitary tumors, and pancreas tumors, in MEN2 medullary thyroid carcinoma, pheochromocytoma, and parathyroid tumors. The autosomal dominant inherited tumor syndromes are caused by mutations in the MEN1 gene, a tumor suppressor gene, and mutations in the RET gene, an activated oncogene, in MEN2. The clinical expression of the different tumors can vary within and between families, with a good genotype-phenotype correlation in MEN2...
September 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28899900/ret-receptor-tyrosine-kinase-sustains-proliferation-and-tissue-maturation-in-intestinal-epithelia
#15
Daniel Perea, Jordi Guiu, Bruno Hudry, Chrysoula Konstantinidou, Alexandra Milona, Dafni Hadjieconomou, Thomas Carroll, Nina Hoyer, Dipa Natarajan, Jukka Kallijärvi, James A Walker, Peter Soba, Nikhil Thapar, Alan J Burns, Kim B Jensen, Irene Miguel-Aliaga
Expression of the Ret receptor tyrosine kinase is a defining feature of enteric neurons. Its importance is underscored by the effects of its mutation in Hirschsprung disease, leading to absence of gut innervation and severe gastrointestinal symptoms. We report a new and physiologically significant site of Ret expression in the intestine: the intestinal epithelium. Experiments in Drosophila indicate that Ret is expressed both by enteric neurons and adult intestinal epithelial progenitors, which require Ret to sustain their proliferation...
September 12, 2017: EMBO Journal
https://www.readbyqxmd.com/read/28883261/fine-needle-aspiration-cytology-for-medullary-thyroid-carcinoma-a-single-institutional-experience-in-japan
#16
Ayana Suzuki, Mitsuyoshi Hirokawa, Nami Takada, Miyoko Higuchi, Aki Ito, Naoki Yamao, Toshitetsu Hayashi, Seiji Kuma, Akira Miyauchi
Many cytological studies on medullary thyroid carcinoma (MTC) have been reported; however, such studies in large series of patients with MTC have not been performed. We investigated MTC at a single institution in Japan using fine-needle aspiration cytology (FNAC), and aimed to establish a preoperative diagnostic algorithm for MTC. FNAC was performed in 119 of 149 patients with nodules (79.9%) who ultimately underwent surgical resection. Moreover, hereditary MTC was diagnosed preoperatively in 22 nodules that did not undergo FNAC (39...
September 5, 2017: Endocrine Journal
https://www.readbyqxmd.com/read/28883010/laparoscopic-adrenalectomy-as-an-effective-approach-to-massive-bilateral-pheochromocytomas
#17
Diana Martins, Dírcea Rodrigues, Miguel Melo, Francisco Carrilho
Pheochromocytomas are catecholamine-secreting neoplasms, arising from adrenomedullary chromaffin cells. In type 2 multiple endocrine neoplasia (MEN2) syndrome, pheochromocytomas are usually benign but with predisposition to be bilateral (50%-80% of cases).The authors present the case of a young patient diagnosed with uncommonly large bilateral cystic pheochromocytomas and simultaneous detection of medullary thyroid carcinoma. Molecular testing confirmed germline RET codon C634 mutation, consistent with MEN2A syndrome...
September 7, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28881815/clinicopathological-characteristics-of-ros1-and-ret-rearranged-nsclc-in-caucasian-patients-data-from-a-cohort-of-713-non-squamous-nsclc-lacking-kras-egfr-her2-braf-pik3ca-alk-alterations
#18
Frédéric Dugay, Francisco Llamas-Gutierrez, Marjory Gournay, Sarah Medane, François Mazet, Dan Christian Chiforeanu, Emmanuelle Becker, Régine Lamy, Hervé Léna, Nathalie Rioux-Leclercq, Marc-Antoine Belaud-Rotureau, Florian Cabillic
Targeted therapies have substantially changed the management of non-small cell lung cancer (NSCLC) patients with driver oncogenes. Given the high frequency, EGFR and ALK aberrations were the first to be detected and paved the way for tyrosine kinase inhibitor (TKI) treatments. Other kinases such as ROS1 and more recently RET have emerged as promising targets, and ROS1 and RET TKIs are already available for precision medicine. We screened a large cohort of 713 Caucasian non-squamous NSCLC patients lacking EGFR/KRAS/BRAF/HER2/PI3KCA/ALK aberrations for ROS1 and RET rearrangements using fluorescence in situ hybridization to determine the frequency and clinicopathological characteristics of ROS1- and RET-positive patients...
August 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28881068/molecular-genetics-of-syndromic-and-non-syndromic-forms-of-parathyroid-carcinoma
#19
REVIEW
Luís Cardoso, Mark Stevenson, Rajesh V Thakker
Parathyroid carcinoma (PC) may occur as part of a complex hereditary syndrome or an isolated (i.e. non-syndromic) non-hereditary (i.e. sporadic) endocrinopathy. Studies of hereditary, and syndromic forms of PC, which include the hyperparathyroidism-jaw tumour syndrome (HPT-JT), multiple endocrine neoplasia types 1 and 2 (MEN1 and MEN2), and familial isolated primary hyperparathyroidism (FIHP), have revealed some genetic mechanisms underlying PC. Thus, cell division cycle 73 (CDC73) germline mutations cause HPT-JT, and CDC73 mutations occur in 70% of sporadic PC, but in only ∼2% of parathyroid adenomas...
September 7, 2017: Human Mutation
https://www.readbyqxmd.com/read/28880458/determinants-of-platelet-count-in-pediatric-patients-with-congenital-cyanotic-heart-disease-role-of-immature-platelet-fraction
#20
Randa M Matter, Iman A Ragab, Alaa M Roushdy, Ahmed G Ahmed, Hanan H Aly, Eman A Ismail
OBJECTIVES: Congenital heart defects are common noninfectious causes of mortality in children. Bleeding and thrombosis are both limiting factors in the management of such patients. We assessed the frequency of thrombocytopenia in pediatric patients with congenital cyanotic heart disease (CCHD) and evaluated determinants of platelet count including immature platelet fraction (IPF) and their role in the pathogenesis of thrombocytopenia. METHODS: Forty-six children and adolescents with CCHD during pre-catheter visits were studied; median age was 20...
September 7, 2017: Congenital Heart Disease
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