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https://www.readbyqxmd.com/read/27906682/nonhsat076754-aids-ultrasonography-in-predicting-lymph-node-metastasis-and-promotes-migration-and-invasion-of-papillary-thyroid-cancer-cells
#1
Shujun Xia, Chuandong Wang, Xiaofeng Ni, Zhongxin Ni, Yijie Dong, Weiwei Zhan
Lymph node metastasis (LNM) is the primary challenge in papillary thyroid cancer (PTC). Recurrent cancerous lymph nodes require repeated surgeries, which increases the risk for surgical complications. Thus, the evaluation of LNM before surgery is important. Ultrasonography is the most convenient way to examine cervical LNM, but the sensitivity of ultrasonography in the identification of LNM in cases of PTC is extremely low. A series of lncRNAs (long noncoding RNAs) have been reported as candidate biomarkers in a variety of tumors...
November 30, 2016: Oncotarget
https://www.readbyqxmd.com/read/27906545/temperature-dependent-inotropic-and-lusitropic-indices-based-on-half-logistic-time-constants-for-four-segmental-phases-in-isovolumic-left-ventricular-pressure-time-curve-in-excised-cross-circulated-canine-heart
#2
Ju Mizuno, Satoshi Mohri, Takeshi Yokoyama, Mikiya Otsuji, Hideko Arita, Kazuo Hanaoka
Varying temperature affects cardiac systolic and diastolic function and the left ventricular (LV) pressure-time curve (PTC) waveform that includes information about LV inotropism and lusitropism. Our proposed half-logistic (h-L) time constants obtained by fitting using h-L functions for four segmental phases (Phases I-IV) in the isovolumic LV PTC are more useful indices for estimating LV inotropism and lusitropism during contraction and relaxation periods than the mono-exponential (m-E) time constants at normal temperature...
September 5, 2016: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/27906161/structural-basis-for-arfa-rf2-mediated-translation-termination-on-mrnas-lacking-stop-codons
#3
Paul Huter, Claudia Müller, Bertrand Beckert, Stefan Arenz, Otto Berninghausen, Roland Beckmann, Daniel N Wilson
In bacteria, ribosomes stalled on truncated mRNAs lacking a stop codon are rescued by either the transfer-messenger RNA (tmRNA), alternative rescue factor A (ArfA) or ArfB rescue systems(1). While tmRNA- and ArfB-ribosome structures have been elucidated(2-7), structural insight into how ArfA recognizes the presence of truncated mRNAs and recruits the canonical termination release factor RF2 to rescue the stalled ribosomes is lacking. Here we present a cryo-electron microscopy reconstruction of a ribosome stalled on a truncated mRNA in the presence of ArfA and RF2...
December 1, 2016: Nature
https://www.readbyqxmd.com/read/27904772/mir-101-targets-usp22-to-inhibit-the-tumorigenesis-of-papillary-thyroid-carcinoma
#4
Huadong Zhao, Haili Tang, Qike Huang, Bo Qiu, Xiaomin Liu, Dong Fan, Li Gong, Hang Guo, Chong Chen, Shixiong Lei, Lu Yang, Jianguo Lu, Guoqiang Bao
Increasing evidence suggests that microRNA-101 (miR-101) is involved in the progression of various human cancers, including papillary thyroid carcinoma (PTC). However, the biological functions of miR-101 and underlying molecular mechanisms in PTC remain largely unknown. In this study, we demonstrated that miR-101 underexpression in PTC tissue was associated with lymph node metastasis and poor prognosis of PTC patients. MiR-101 reduced PTC cell proliferation, apoptosis resistance, and invasion. Ubiquitin-specific protease 22 (USP22) was confirmed as a direct target of miR-101...
2016: American Journal of Cancer Research
https://www.readbyqxmd.com/read/27904709/braf-and-epithelial-mesenchymal-transition-in-papillary-thyroid-carcinoma-challenging-the-roles-of-snail-and-e-cadherin
#5
Brendon Mitchell, Dominick Leone, Shi Yang, Ashraf Khan, Meera Mahalingam, Jagdish Dhingra
OBJECTIVE: In papillary thyroid carcinoma (PTC), while the role of BRAF is well established, the contribution of BRAF to epithelial-mesenchymal transition is not. STUDY DESIGN/SETTING: To elucidate the relationship between BRAF, surrogates of epithelial-mesenchymal transition (Snail, E-cadherin) and established histopathologic prognosticators in papillary thyroid carcinoma. SUBJECTS/METHODS: In this IRB approved cross-sectional study, 50 cases of archived annotated PTC samples were retrieved and immunohistochemically stained for Snail and E-cadherin protein...
2016: American Journal of Translational Research
https://www.readbyqxmd.com/read/27904595/cd56-hbme-1-and-cytokeratin-19-expressions-in-papillary-thyroid-carcinoma-and-nodular-thyroid-lesions
#6
Senay Erdogan-Durmus, Deniz Ozcan, Enver Yarikkaya, Ali Kurt, Aynur Arslan
BACKGROUND: Carcinomas of the thyroid follicular epithelium are the most common cancers of the endocrine system. In the diagnosis of thyroid nodules and tumors, the gold standard is histological evaluation. In cases which have morphological overlap, immunohistochemistry is needed for differential diagnosis. The purpose of this study is to investigate the expressions of CD56, HBME-1, cytokeratin 19 (CK19) antibodies in papillary thyroid carcinoma (PTC) and thyroid nodular lesions and their contributions to differential diagnosis...
2016: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/27904567/dual-malignancy-in-adolescence-a-rare-case-report-of-metachronous-papillary-carcinoma-of-thyroid-following-dysgerminoma-of-ovary
#7
Suvadip Chakrabarti, Sanjay M Desai, Dharmendra Y Mehta, Shreyas Somanath
Dual malignancy is rare in adolescents. Dual malignancy with the second malignancy of thyroid is rare. No association has been reported between dysgerminoma of ovary and carcinoma thyroid in medical literature. Despite a thorough PubMed search (key words - Papillary carcinoma of thyroid, metachronous, dysgerminoma ovary), we were unable to find a previous reported case of metachronous papillary carcinoma of thyroid (PTC) following dysgerminoma of the ovary. After surgery, the patient is being regularly followed up for recurrence/development of new primary...
2016: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/27904250/diagnosis-and-management-of-postoperative-biliary-leaks
#8
REVIEW
Arian M Nikpour, R Justin Knebel, Danny Cheng
Postoperative biliary leaks have become more common in the past three decades since the development of laparoscopic biliary surgery. The role of the radiologist and interventional radiologist is important in the diagnosis and treatment of such complications, and can play an adjunctive role in the definitive surgical repair. Ultrasound, computed tomography, magnetic resonance cholangiopancreatography, nuclear medicine cholescintigraphy studies, and percutaneous transhepatic cholangiograms (PTC) are the various imaging modalities used for diagnosis...
December 2016: Seminars in Interventional Radiology
https://www.readbyqxmd.com/read/27903245/the-predictive-value-of-sonographic-images-of-follicular-lesions-a-comparison-with-nodules-unequivocal-in-fna-single-centre-prospective-study
#9
Dorota Słowińska-Klencka, Martyna Wojtaszek-Nowicka, Stanisław Sporny, Ewa Woźniak-Oseła, Bożena Popowicz, Mariusz Klencki
BACKGROUND: To determine the diagnostic efficacy of ultrasonographic malignancy risk features (UMRFs) in follicular lesions (FL) in a population with low risk of malignancy in FL and to compare it with a similar analysis in a group of patients with unequivocal cytology (UC): benign lesion (BL) or malignant neoplasm (MN). METHODS: Presence of UMRFs (hypoechogenicity, solid echostructure, taller-than-wide shape, pathological vascularization, irregular margins, microcalcifications and macrocalcifications) and their sets were assessed in 322 FL: 202 follicular lesions of undetermined significance (FLUS) and 120 suspicious for follicular neoplasm (SFN) and 300 nodules with UC: 200 BL and 100 MN, subsequently evaluated histopathologically...
December 1, 2016: BMC Endocrine Disorders
https://www.readbyqxmd.com/read/27899591/modulation-of-nonsense-mediated-decay-by-rapamycin
#10
Rocio T Martinez-Nunez, Andrew Wallace, Doyle Coyne, Linnea Jansson, Miles Rush, Hanane Ennajdaoui, Sol Katzman, Joanne Bailey, Katrin Deinhardt, Tilman Sanchez-Elsner, Jeremy R Sanford
Rapamycin is a naturally occurring macrolide whose target is at the core of nutrient and stress regulation in a wide range of species. Despite well-established roles as an inhibitor of cap-dependent mRNA translation, relatively little is known about its effects on other modes of RNA processing. Here, we characterize the landscape of rapamycin-induced post-transcriptional gene regulation. Transcriptome analysis of rapamycin-treated cells reveals genome-wide changes in alternative mRNA splicing and pronounced changes in NMD-sensitive isoforms...
November 28, 2016: Nucleic Acids Research
https://www.readbyqxmd.com/read/27899250/estrogen-and-thyroid-cancer-is-a-stem-affair-a-preliminary-study
#11
Mariangela Zane, Carmelo Parello, Gianmaria Pennelli, Danyelle M Townsend, Stefano Merigliano, Marco Boscaro, Antonio Toniato, Giovannella Baggio, Maria Rosa Pelizzo, Domenico Rubello, Isabella Merante Boschin
Gender influences Papillary Thyroid Cancer (PTC) with an incidence of 3:1 when comparing women to men with different aggressiveness. This gender discrepancy suggests some role of sex hormones in favoring the malignant progression of thyroid tissue to cancer. Estrogens are known to promote Stem Cell self-renewal and, therefore, may be involved in tumor initiation. The goals of these studies are to investigate the underlying causes of gender differences in PTC by studying the specific role of estrogens on tumor cells and their involvement within the Cancer Stem Cell (CSC) compartment...
November 26, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27898162/residual-limb-skin-temperature-and-thermal-comfort-in-people-with-amputation-during-activity-in-a-cold-environment
#12
Ava D Segal, Glenn K Klute
Thermal comfort remains a common problem for people with lower-limb amputation. Both donning a prosthesis and engaging in activity at room temperature can increase residual limb skin temperature; however, the effects of activity on skin temperature and comfort in more extreme environments remain unknown. We examined residual limb skin temperatures and perceived thermal comfort (PTC; 11-point Likert scale) of participants with unilateral transtibial amputation (n = 8) who were snowshoeing in a cold environment...
2016: Journal of Rehabilitation Research and Development
https://www.readbyqxmd.com/read/27896898/assembling-polyoxo-titanium-clusters-and-cds-nanoparticles-to-a-porous-matrix-for-efficient-and-tunable-h2-evolution-activities-with-visible-light
#13
Zhiqiang Jiang, Jinxiu Liu, Meiyan Gao, Xi Fan, Lei Zhang, Jian Zhang
Polyoxo-titanium clusters (PTCs) are applied to construct highly efficient ternary PTC/CdS/MIL-101 visible-light-range H2 -evolution photocatalysts. The application of PTCs not only increases the photocatalytic activities but also provides a molecular tool to tune them.
November 29, 2016: Advanced Materials
https://www.readbyqxmd.com/read/27896649/the-micropapillary-hobnail-variant-of-papillary-thyroid-carcinoma-a-review-of-series-described-in-the-literature-compared-to-a-series-from-one-southern-italy-pathology-institution
#14
REVIEW
Antonio Ieni, Valeria Barresi, Roberta Cardia, Luana Licata, Flavia Di Bari, Salvatore Benvenga, Giovanni Tuccari
Papillary thyroid carcinoma (PTC) has a good prognosis with a 10-yr survival greater than 90%. Recently, a micro-papillary pattern with hobnail appearance (MPHC) in PTC has been indicated as associated with poor prognosis, but this suggestion is based only on a few cases from geographical areas different from ours. Two-hundred ninety-nine consecutive PTC cases were collected between the years of 1992 and 2014 at our institution. The corresponding histologic sections (at least 6 for each case) were stained with hematoxylin and eosin and reviewed independently by two pathologists to reach a consensus on the identification and quantification of the MPHC...
November 28, 2016: Reviews in Endocrine & Metabolic Disorders
https://www.readbyqxmd.com/read/27893690/prognosis-of-papillary-thyroid-carcinoma-in-elderly-patients-after-thyroid-resection-a-retrospective-cohort-analysis
#15
Nathalie Chereau, Christophe Trésallet, Severine Noullet, Gaelle Godiris-Petit, Frederique Tissier, Laurence Leenhardt, Fabrice Menegaux
The size of the elderly population and the incidence of papillary thyroid carcinoma (PTC) in this group appear to be rapidly increasing, although published information based on more detailed older age groupings are lacking.This study aimed to determine the clinical features and outcomes of elderly patients in PTC.All consecutive patients who received surgery for PTC in our Department from 1978 to 2014 were included. We compared 3 patient groups: young (<65 years), older (65-75 years), and very old patients (>75 years)...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27888532/biliary-strictures-complicating-liver-transplantation-in-pediatric-patients-experience-in-a-south-american-transplant-center
#16
A Holguin, S Rodriguez-Takeuchi, L Ospina, D Acosta, V Botero, L Thomas, J Villegas, G Echeverri, L Caicedo
OBJECTIVE: To describe the experience of percutaneous transhepatic cholangiography (PTC) with biliary dilatation and drainage after pediatric liver transplantation, and to determine the long-term outcome of this procedure. METHODS: Retrospective study from 2001 to 2013. Follow-up after treatment was also undertaken. A survival analysis was performed in patients in whom the procedure and eventual removal of the catheter were successful. RESULTS: In all, 196 children received liver transplants; 40 of them (20 boys and 20 girls; median age of 4 years) were treated using PTC due to biliary complications...
November 26, 2016: Clinical Transplantation
https://www.readbyqxmd.com/read/27888016/post-transplantation-cyclophosphamide-and-ixazomib-combination-rescues-mice-subjected-to-experimental-gvhd-and-is-superior-to-either-agent-alone
#17
A Samer Al-Homsi, Austin Goodyke, Michael McLane, Sarah Abdel-Mageed, Kelli Cole, Marlee Muilenburg, Yuxin Feng
Lapses in the prevention of graft-versus-host disease (GvHD) following allogeneic hematopoietic stem cell transplantation (HSCT) warrants novel approaches. Such approaches include, among others, the use of post-transplantation cyclophosphamide (PTC) and proteasome inhibitors. Although PTC alone consistently produces low rates of chronic GvHD, the incidence of acute GvHD remains significant. Inversely, prolonged post-transplantation administration of proteasome inhibitors carries a risk of paradoxical aggravation of GvHD...
November 22, 2016: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/27886021/revision-of-orthovoltage-chest-wall-treatment-by-monte-carlo-simulations
#18
R Faghihi, B Zeinali-Rafsanjani, M A Mosleh-Shirazi, A Mosalaei, K Hadad
PURPOSE: Given the high local control rates observed in breast cancer patients undergoing chest wall irradiation by kilovoltage x-rays, we aimed to revisit this treatment modality by accurate calculation of dose distributions using Monte Carlo simulation. METHODS AND MATERIAL: The machine components were simulated using the MCNPX code. This model was used to assess the dose distribution of chest wall kilovoltage treatment in different chest wall thicknesses and larger contour or fat patients in standard and mid sternum treatment plans...
November 18, 2016: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/27884511/effects-of-previous-physical-training-on-adriamycin-nephropathy-and-its-relationship-with-endothelial-lesions-and-angiogenesis-in-the-renal-cortex
#19
Camila M Faleiros, Heloisa Francescato, Marcelo Papoti, Lucas Chaves, Cleonice Silva, Roberto Costa, Terezila Machado Coimbra
AIMS: Adriamycin (ADR)-induced nephropathy is one of the most experimental models used in progressive kidney disease. A single dose of this drug induces a progressive and irreversible proteinuria that progresses to focal segmental glomerulosclerosis and tubulointerstitial lesions. Regular physical activity has been considered as a therapeutic intervention in several diseases. This study evaluated the influence of previous physical training in renal damage induced by ADR and the role of endothelial lesions and angiogenesis in this process...
November 21, 2016: Life Sciences
https://www.readbyqxmd.com/read/27882585/significance-of-a-solid-component-in-the-papillary-thyroid-carcinoma-associated-with-clinicopathological-parameters
#20
Ryuji Ohashi, Kiyoko Kawahara, Shigeki Namimatsu, Takehito Igarashi, Takashi Sakatani, Iwao Sugitani, Zenya Naito
AIMS: Solid variant of papillary thyroid carcinoma (SVPTC) is characterized by a solid component (SC) involving more than 50% of the tumor with the preservation of the classical cytological features of papillary thyroid carcinoma (PTC). However, clinical significance of SC in PTC has rarely been examined. Herein, we retrospectively investigated the clinicopathological features of PTC with various degree (10 to 85%) of SC (PTCSC). METHODS: Patients with PTCSC (n=27) were stratified into SC-major (SC >50% of the tumor) and SC-minor (SC <49%) groups...
November 24, 2016: Histopathology
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