keyword
MENU ▼
Read by QxMD icon Read
search

Weichert

keyword
https://www.readbyqxmd.com/read/28526679/succession-of-transiently-active-tumor-initiating-cell-clones-in-human-pancreatic-cancer-xenografts
#1
Claudia R Ball, Felix Oppel, Karl Roland Ehrenberg, Taronish D Dubash, Sebastian M Dieter, Christopher M Hoffmann, Ulrich Abel, Friederike Herbst, Moritz Koch, Jens Werner, Frank Bergmann, Naveed Ishaque, Manfred Schmidt, Christof von Kalle, Claudia Scholl, Stefan Fröhling, Benedikt Brors, Wilko Weichert, Jürgen Weitz, Hanno Glimm
Although tumor-initiating cell (TIC) self-renewal has been postulated to be essential in progression and metastasis formation of human pancreatic adenocarcinoma (PDAC), clonal dynamics of TICs within PDAC tumors are yet unknown. Here, we show that long-term progression of PDAC in serial xenotransplantation is driven by a succession of transiently active TICs producing tumor cells in temporally restricted bursts. Clonal tracking of individual, genetically marked TICs revealed that individual tumors are generated by distinct sets of TICs with very little overlap between subsequent xenograft generations...
May 19, 2017: EMBO Molecular Medicine
https://www.readbyqxmd.com/read/28505009/a-novel-grading-system-based-on-tumor-budding-and-cell-nest-size-is-a-strong-predictor-of-patient-outcome-in-esophageal-squamous-cell-carcinoma
#2
Moritz Jesinghaus, Melanie Boxberg, Björn Konukiewitz, Julia Slotta-Huspenina, Anna M Schlitter, Katja Steiger, Katja Specht, Kathrin Wieczorek, Arne Warth, Thomas Schmidt, Arndt Hartmann, Ihsan E Demir, Markus Feith, Katja Ott, Wilko Weichert
The determination of prognosis in patients with esophageal squamous cell carcinoma (ESCC) is primarily based on staging according to the TNM-classification, whereas conventional grading is of minor clinical importance because of its deficiencies in prognostic patient stratification. Recently, a novel, highly prognostic grading scheme based on budding activity and cell nest size has been proposed for squamous cell carcinoma (SCC) of both pulmonary as well as oral origin. In order to investigate the utility and transferability of this approach to ESCC, we evaluated budding activity and cell nest size, as well as other histomorphologic characteristics, in a cohort of 135 primarily resected tumors and correlated the results with clinicopathologic and outcome parameters...
May 12, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28504689/molecular-signaling-in-multiple-myeloma-association-of-ras-raf-mutations-and-mek-erk-pathway-activation
#3
J Xu, N Pfarr, V Endris, E K Mai, N H Md Hanafiah, N Lehners, R Penzel, W Weichert, A D Ho, P Schirmacher, H Goldschmidt, M Andrulis, M S Raab
Multiple myeloma (MM) is a plasma cell malignancy that is still considered to be incurable in most cases. A dominant mutation cluster has been identified in RAS/RAF genes, emphasizing the potential significance of RAS/RAF/MEK/ERK signaling as a therapeutic target. As yet, however, the clinical relevance of this finding is unclear as clinical responses to MEK inhibition in RAS-mutant MM have been mixed. We therefore assessed RAS/RAF mutation status and MEK/ERK pathway activation by both targeted sequencing and phospho-ERK immunohistochemistry in 180 tissue biopsies from 103 patients with newly diagnosed MM (NDMM) and 77 patients with relapsed/refractory MM (rrMM)...
May 15, 2017: Oncogenesis
https://www.readbyqxmd.com/read/28462862/high-prevalence-of-incidental-and-symptomatic-venous-thromboembolic-events-in-patients-with-advanced-pancreatic-cancer-under-palliative-chemotherapy-a-retrospective-cohort-study
#4
Anne Katrin Berger, Hans Martin Singh, Wiebke Werft, Alexander Muckenhuber, Martin R Sprick, Andreas Trumpp, Wilko Weichert, Dirk Jäger, Christoph Springfeld
OBJECTIVES: Pancreatic cancer patients are at high risk for venous thromboembolic events (VTEs), and chemotherapy is a known additional risk factor. In this context, there is a controversial discussion whether prophylactic anticoagulation should be offered to all outpatients receiving chemotherapy. METHODS: In this retrospective study, we analyzed incidental and symptomatic VTEs in 150 pancreatic cancer patients receiving either gemcitabine-based chemotherapy or chemotherapy according to the FOLFIRINOX protocol...
April 22, 2017: Pancreatology: Official Journal of the International Association of Pancreatology (IAP) ... [et Al.]
https://www.readbyqxmd.com/read/28450707/post-surgery-glioma-growth-modeling-from-magnetic-resonance-images-for-patients-with-treatment
#5
Ahmed Elazab, Hongmin Bai, Yousry M Abdulazeem, Talaat Abdelhamid, Sijie Zhou, Kelvin K L Wong, Qingmao Hu
Reaction diffusion is the most common growth modelling methodology due to its simplicity and consistency with the biological tumor growth process. However, current extensions of the reaction diffusion model lack one or more of the following: efficient inclusion of treatments' effects, taking into account the viscoelasticity of brain tissues, and guaranteed stability of the numerical solution. We propose a new model to overcome the aforementioned drawbacks. Guided by directional information derived from diffusion tensor imaging, our model relates tissue heterogeneity with the absorption of the chemotherapy, adopts the linear-quadratic term to simulate the radiotherapy effect, employs Maxwell-Weichert model to incorporate brain viscoelasticity, and ensures the stability of the numerical solution...
April 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28439722/dna-methylation-age-acceleration-is-associated-with-disease-duration-and-age-at-onset-in-c9orf72-patients
#6
Ming Zhang, Maria Carmela Tartaglia, Danielle Moreno, Christine Sato, Paul McKeever, Anna Weichert, Julia Keith, Janice Robertson, Lorne Zinman, Ekaterina Rogaeva
The repeat expansion in C9orf72 is the most common cause of amyotrophic lateral sclerosis and frontotemporal dementia. C9orf72 patients present with a wide range in disease duration and age of onset. The strongest risk factor for both syndromes is aging, which was linked to DNA methylation (DNAm) age based on the cumulative assessment of the methylation levels of 353 CpGs included on the genome-wide 450k BeadChip. DNAm age may reflect biological age better than chronological age. We conducted a genome-wide blood DNA methylation study of 46 unrelated C9orf72 patients...
April 24, 2017: Acta Neuropathologica
https://www.readbyqxmd.com/read/28432616/prognostic-impact-of-pd-1-and-its-ligands-in-renal-cell-carcinoma
#7
REVIEW
Franziska Erlmeier, Wilko Weichert, Andres Jan Schrader, Michael Autenrieth, Arndt Hartmann, Sandra Steffens, Philipp Ivanyi
Programmed death-1 receptor (PD-1) and programmed death-1 receptor-ligand (PD-L1) have been suggested to play a role as prognostic markers in clear cell renal cell carcinoma (ccRCC). The association between PD-L1 and prognosis seems to be more robust than for PD-1. Further, preliminary analyses suggest that neither PD-1 nor its ligands play a role as prognostic markers in non-clear cell RCC, while the prognostic role of PD-L2 in ccRCC as well as in non-clear cell RCC remains unclear.
June 2017: Medical Oncology
https://www.readbyqxmd.com/read/28428283/regulatory-aspects-of-optical-methods-and-exogenous-targets-for-cancer-detection
#8
Willemieke S Tummers, Jason M Warram, Kiranya E Tipirneni, John Fengler, Paula Jacobs, Lalitha Shankar, Lori Henderson, Betsy Ballard, Brian W Pogue, Jamey P Weichert, Michael Bouvet, Jonathan Sorger, Christopher H Contag, John V Frangioni, Michael F Tweedle, James P Basilion, Sanjiv S Gambhir, Eben L Rosenthal
Considerable advances in cancer-specific optical imaging have improved the precision of tumor resection. In comparison to traditional imaging modalities, this technology is unique in its ability to provide real-time feedback to the operating surgeon. Given the significant clinical implications of optical imaging, there is an urgent need to standardize surgical navigation tools and contrast agents to facilitate swift regulatory approval. Because fluorescence-enhanced surgery requires a combination of both device and drug, each may be developed in conjunction, or separately, which are important considerations in the approval process...
April 20, 2017: Cancer Research
https://www.readbyqxmd.com/read/28408529/targeted-alpha-therapy-of-mcrpc-with-225-actinium-psma-617-dosimetry-estimate-and-empirical-dose-finding
#9
Clemens Kratochwil, Frank Bruchertseifer, Hendrik Rathke, Marcus Bronzel, Christos Apostolidis, Wilko Weichert, Uwe Haberkorn, Frederick Lars Giesel, Alfred Morgenstern
To develop a treatment protocol for (225)Ac-PSMA-617 alpha-radiation therapy in advanced stage, metastatic castration-resistant prostate cancer patients with PSMA-positive tumor phenotype. Methods: A dosimetry estimate was calculated based on time-activity-curves derived from serially performed (177)Lu-PSMA-617 scans extrapolated to the physical half-life of (225)Ac, assuming instant decay of instable daughter nuclides. Salvage therapies empirically conducted with 50kBq/kg (n = 4), 100kBq/kg (n = 4), 150kBq/kg (n = 2), 200kBq/kg (n = 4) (225)Ac-PSMA-617 were evaluated retrospectively regarding toxicity and treatment response...
April 13, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28405629/human-norovirus-evolution-in-a-chronically-infected-host
#10
Sylvie Y Doerflinger, Stefan Weichert, Anna Koromyslova, Martin Chan, Christian Schwerk, Ruediger Adam, Stefan Jennewein, Grant S Hansman, Horst Schroten
Typically, human noroviruses cause symptoms of acute gastroenteritis for 2 to 4 days. Often, the virions are shed in stool for several days after the symptoms recede, which in turn can lead to further contamination and transmission. Moreover, a number of reports have considered that chronic norovirus infections, i.e., lasting months and years, might even function as reservoirs for the generation of novel strains that can escape the herd immunity or have modified binding interactions with histo-blood group antigens (HBGAs)...
March 2017: MSphere
https://www.readbyqxmd.com/read/28353093/pd-l2-a-prognostic-marker-in-chromophobe-renal-cell-carcinoma
#11
Franziska Erlmeier, Wilko Weichert, Michael Autenrieth, Max Wiedemann, Andres Jan Schrader, Arndt Hartmann, Philipp Ivanyi, Sandra Steffens
In the context of cancer immunotherapy, PD-1 as well as PD-L1 has been widely studied in renal cell carcinoma (RCC). PD-1 and PD-L1 play a significant role as prognostic markers in clear cell renal cell carcinoma. In contrast, little is known about PD-L2 expression patterns in RCC, especially in rarer subtypes. The aim of this study was to evaluate the prevalence, distribution and prognostic impact of PD-L2 expression in chromophobe (ch)RCC. Eighty-one patients who underwent renal surgery due to chRCC were retrospectively evaluated...
May 2017: Medical Oncology
https://www.readbyqxmd.com/read/28347920/mir-200b-and-mir-155-as-predictive-biomarkers-for-the-efficacy-of-chemoradiation-in-locally-advanced-head-and-neck-squamous-cell-carcinoma
#12
Anne-Katrin Hess, Annika Müer, Fabian Dominik Mairinger, Wilko Weichert, Albrecht Stenzinger, Michael Hummel, Volker Budach, Ingeborg Tinhofer
BACKGROUND: The predictive value of microRNAs (miRNAs) in tumour cells and infiltrating immune cells for the efficacy of chemoradiation (CRTX) in locally advanced head and neck squamous cell carcinoma (HNSCC) was evaluated. METHODS: Formalin-fixed, paraffin-embedded tumour material was collected from patients with locally advanced HNSCC treated within the ARO-0401 phase III trial with radiotherapy in combination with either 5-fluorouracil/cisplatin (CDDP-CRTX) or 5-fluorouracil/mitomycin C (MMC-CRTX)...
March 24, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28236630/growth-attainment-in-german-children-born-preterm-and-cardiovascular-risk-factors-in-adolescence-analysis-of-the-population-representative-kiggs-data
#13
Renate L Bergmann, Karl E Bergmann, Rolf Richter, Martin Schlaud, Wolfgang Henrich, Alexander Weichert
AIM: To compare the growth attainment of preterm children and their cardiovascular risk factors at adolescence with the values measured in term children in Germany. METHODS: About 17,641 children aged 0 to <18 years were studied between 2003 and 2006 in the population representative German KiGGS survey ("German Health Interview and Examination Survey for Children and Adolescents") using questionnaires, physical examinations, standardized anthropometric and blood pressure measurements, and blood sample analyses...
February 25, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/28221700/multikinase-inhibitors-sorafenib-and-sunitinib-as-radiosensitizers-in-head-and-neck-cancer-cell-lines
#14
Annette Affolter, Gerson Samosny, Anne-Sophie Heimes, Johanna Schneider, Wilko Weichert, Albrecht Stenzinger, Katharina Sommer, Alexandra Jensen, Arnulf Mayer, Walburgis Brenner, Wolf J Mann, Jürgen Brieger
BACKGROUND: Radioresistance is a common feature of head and neck squamous cell carcinoma (HNSCC). We previously showed that the irradiation- activated vascular endothelial growth factor (VEGF)-extracellular signal-regulated kinase (ERK)-axis is fundamental for the survival of resistant tumors. In this study, we examined if treatment with potent multikinase (MK) inhibitors, sorafenib and sunitinib, could radiosensitize tumor cells. METHODS: Cultured HNSCC cell lines were treated with inhibitors and subsequently irradiated...
February 21, 2017: Head & Neck
https://www.readbyqxmd.com/read/28216441/the-dynamics-of-signal-complex-formation-mediating-germling-fusion-in-neurospora-crassa
#15
Antonio Serrano, Hamzeh H Hammadeh, Stephanie Herzog, Julia Illgen, Marcel R Schumann, Martin Weichert, André Fleiβner
Colony initiation of filamentous fungi commonly involves fusion of germinating vegetative spores. Studies in Neurospora crassa revealed an unusual cell-cell communication mechanism mediating this process, in which the fusion partners coordinately alternate between two physiological stages, probably related to signal sending and receiving. This "cell dialog" involves the alternating, oscillatory recruitment of the SO protein and the MAK-2 MAP kinase module to the apical plasma membrane of growing fusion tips...
February 16, 2017: Fungal Genetics and Biology: FG & B
https://www.readbyqxmd.com/read/28181482/small-genomic-insertions-form-enhancers-that-misregulate-oncogenes
#16
Brian J Abraham, Denes Hnisz, Abraham S Weintraub, Nicholas Kwiatkowski, Charles H Li, Zhaodong Li, Nina Weichert-Leahey, Sunniyat Rahman, Yu Liu, Julia Etchin, Benshang Li, Shuhong Shen, Tong Ihn Lee, Jinghui Zhang, A Thomas Look, Marc R Mansour, Richard A Young
The non-coding regions of tumour cell genomes harbour a considerable fraction of total DNA sequence variation, but the functional contribution of these variants to tumorigenesis is ill-defined. Among these non-coding variants, somatic insertions are among the least well characterized due to challenges with interpreting short-read DNA sequences. Here, using a combination of Chip-seq to enrich enhancer DNA and a computational approach with multiple DNA alignment procedures, we identify enhancer-associated small insertion variants...
February 9, 2017: Nature Communications
https://www.readbyqxmd.com/read/28181130/micrornas-mir-7-and-mir-340-predict-response-to-neoadjuvant-chemotherapy-in-breast-cancer
#17
Mithu Raychaudhuri, Holger Bronger, Theresa Buchner, Marion Kiechle, Wilko Weichert, Stefanie Avril
PURPOSE: miRNAs have been linked to chemosensitivity of breast cancer cells in vitro. In patients, however, there is no clinically validated method for predicting chemotherapy response. The aim of this study was to assess whether (I) a specific pattern of miRNA expression in pretherapeutic biopsies can predict response to neoadjuvant chemotherapy, and (II) differential miRNA expression in residual tumor after completion of chemotherapy allows further prognostic stratification of non-responding patients...
April 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28178700/genetic-profiling-of-cancers-of-the-digestive-system-biological-insights-and-clinical-implications
#18
Albrecht Stenzinger, Wilko Weichert
Massive parallel sequencing technologies (next-generation sequencing) have enabled us to draw a comprehensive landscape of the genomic aberrations underlying common cancers of the digestive system, and they have thus revolutionized our understanding of the genomic makeup and biology of these tumors. Apart from the commonly mutated founder genes, e.g., KRAS and TP53, we now have detailed information on additional and less frequent genomic events for every major digestive system cancer. However, many challenging issues remain when it comes to translating these findings into clinical applications...
February 9, 2017: Pathobiology: Journal of Immunopathology, Molecular and Cellular Biology
https://www.readbyqxmd.com/read/28176137/smarca4-deficient-sinonasal-carcinoma
#19
Abbas Agaimy, Wilko Weichert
The term "sinonasal undifferentiated carcinoma (SNUC)" has been coined in 1986 for a highly aggressive sinonasal tract epithelial neoplasm showing distinctive morphology, but lacking any specific line of differentiation. Recent developments resulted in a dynamic splitting of new entities traditionally included in the spectrum of SNUC. Sinonasal NUT-midline carcinoma, adamantinoma-like Ewing family tumors and most recently, SMARCB1(INI1)-deficient sinonasal carcinoma are the main entities defined by specific genetic aberrations...
February 7, 2017: Head and Neck Pathology
https://www.readbyqxmd.com/read/28175546/364%C3%A2-creation-of-a-dual-labeled-cancer-targeting-alkylphosphocholine-analog-for-dual-modality-quantitative-positron-emission-tomography-and-intraoperative-tumor-visualization
#20
John S Kuo, Ray R Zhang, Anatoly N Pinchuk, Justin Jeffrey, Paul A Clark, Jamey P Weichert
No abstract text is available yet for this article.
August 1, 2016: Neurosurgery
keyword
keyword
12031
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"