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https://www.readbyqxmd.com/read/29331588/antagonism-of-cysteinyl-leukotriene-receptor-1-cysltr1-by-montelukast-suppresses-cell-senescence-of-chondrocytes
#1
Wei Song, Yumin Zhang, Jun Wang, Tao Ma, Linjie Hao, Kunzheng Wang
Aging is closely associated with osteoarthritis (OA). Although its underlying mechanisms remain unknown, cellular senescence in chondrocytes has become an important therapeutic target for the treatment of OA. Cysteinyl leukotriene receptors (cysLTRs) mediate the pathobiological function of cysteinyl leukotrienes (cysLTs). However, the roles of cysLTRs in the pathogenesis of OA have not been reported before. In the current study, we found that cysLTR1 but not cysLTR2 is expressed in human primary chondrocytes...
January 10, 2018: Cytokine
https://www.readbyqxmd.com/read/29330929/adipocytes-affect-castration-resistant-prostate-cancer-cells-to-develop-the-resistance-to-cytotoxic-action-of-nk-cells-with-alterations-of-pd-l1-nkg2d-ligand-levels-in-tumor-cells
#2
Lijun Xu, Mingjing Shen, Xiaodong Chen, Rongying Zhu, Dong-Rong Yang, Ying Tsai, Peter C Keng, Yuhchyau Chen, Soo Ok Lee
BACKGROUND: Obesity affects prostate cancer (PCa) progression, and the periprostatic adipose tissue adjacent to the prostate is considered a driving force of disease progression. Adipocytes are the main cell population in adipose tissues and their paracrine role contributes to PCa progression, however its implication in modulating immune reactions remains largely unknown. We investigated the adipocyte role in controlling the susceptibility of castration-resistant PCa (CRPC) cells to the cytotoxic action of natural killer (NK) cells...
January 12, 2018: Prostate
https://www.readbyqxmd.com/read/29327707/appendiceal-goblet-cell-carcinoids-and-adenocarcinomas-ex-goblet-cell-carcinoid-are-genetically-distinct-from-primary-colorectal-type-adenocarcinoma-of-the-appendix
#3
Moritz Jesinghaus, Björn Konukiewitz, Sebastian Foersch, Albrecht Stenzinger, Katja Steiger, Alexander Muckenhuber, Claudia Groß, Martin Mollenhauer, Wilfried Roth, Sönke Detlefsen, Wilko Weichert, Günter Klöppel, Nicole Pfarr, Anna Melissa Schlitter
The appendix gives rise to goblet cell carcinoids, which represent special carcinomas with distinct biological and histological features. Their genetic background and molecular relationship to colorectal adenocarcinoma is largely unknown. We therefore performed a next-generation sequencing analysis of 25 appendiceal carcinomas including 11 goblet cell carcinoids, 7 adenocarcinomas ex-goblet cell carcinoid, and 7 primary colorectal-type adenocarcinomas, using a modified Colorectal Cancer specific Panel comprising 32 genes linked to colorectal and neuroendocrine tumorigenesis...
January 12, 2018: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29327172/identifying-candidates-for-gamma-knife-radiosurgery-among-elderly-patients-with-brain-metastases
#4
Tae Hoon Roh, Mi Sun Choi, Namkyu You, Donghwan Jeong, Ae Hwa Jang, Mi Ra Seo, Sang Ryul Lee, Se-Hyuk Kim
We investigated the outcomes of gamma knife radiosurgery (GKRS) for elderly patients (≥ 65 years) with brain metastases, and identified survival-associated factors. We retrospectively analyzed data from 115 patients treated with GKRS for 1-15 brain metastases. The median patient age was 72 years; most primary tumors were pulmonary (n = 83). The mean lesion volume was 2.1 ± 4.8 mL. A mean dose of 19.3 Gy was delivered to the mean 63.9% isodose line. The median overall survival (OS) was 5.3 months (95% confidence interval [CI] 3...
January 11, 2018: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29325784/kinetic-analysis-of-contralateral-liver-hypertrophy-after-radioembolization-of-primary-and-metastatic-liver-tumors
#5
Sonia T Orcutt, Yazan Abuodeh, Arash Naghavi, Jessica Frakes, Sarah Hoffe, Bela Kis, Daniel A Anaya
BACKGROUND: Radioembolization induces liver hypertrophy, although the extent and rate of hypertrophy are unknown. Our goal was to examine the kinetics of contralateral liver hypertrophy after transarterial radioembolization. METHODS: A retrospective study (2010-2014) of treatment-naïve patients with primary/secondary liver malignancies undergoing right lobe radioembolization was performed. Computed tomography volumetry was performed before and 1, 3, and 6 months after radioembolization...
January 8, 2018: Surgery
https://www.readbyqxmd.com/read/29324537/the-figo-stage-iva-versus-ivb-of-ovarian-cancer-prognostic-value-and-predictive-value-for-neoadjuvant-chemotherapy
#6
Parvin Tajik, Roelien van de Vrie, Mohammad H Zafarmand, Corneel Coens, Marrije R Buist, Ignace Vergote, Patrick M M Bossuyt, Gemma G Kenter
OBJECTIVE: The revised version of the International Federation of Gynaecology and Obstetrics (FIGO) staging system (2014) for epithelial ovarian cancer includes a number of changes. One of these is the division of stage IV into 2 subgroups. Data on the prognostic and predictive significance of this classification are scarce. The effect of neoadjuvant chemotherapy (NACT) versus primary debulking surgery (PDS) in relation to the subclassification of FIGO stage IV is also unknown. METHODS: We used data of the EORTC 55971 trial, in which 670 patients with previous stage IIIC or IV epithelial ovarian cancer were randomly assigned to PDS or NACT; 160 patients had previous stage IV...
January 10, 2018: International Journal of Gynecological Cancer
https://www.readbyqxmd.com/read/29321662/breast-cancer-metastasis-to-liver-and-lung-is-facilitated-by-pit-1-cxcl12-cxcr4-axis
#7
Anxo Martinez-Ordoñez, Samuel Seoane, Pablo Cabezas, Noemi Eiro, Juan Sendon-Lago, Manuel Macia, Tomas Garcia-Caballero, Luis O Gonzalez, Laura Sanchez, Francisco Vizoso, Roman Perez-Fernandez
Development of human tumors is driven by accumulation of alterations in tumor suppressor genes and oncogenes in cells. The POU1F1 transcription factor (also known Pit-1) is expressed in the mammary gland and its overexpression induces profound phenotypic changes in proteins involved in breast cancer progression. Patients with breast cancer and elevated expression of Pit-1 show a positive correlation with the occurrence of distant metastasis and poor overall survival. However, some mediators of Pit-1 actions are still unknown...
January 11, 2018: Oncogene
https://www.readbyqxmd.com/read/29316326/orthopedia-homeobox-is-preferentially-expressed-in-typical-carcinoids-of-the-lung
#8
Krisztina Z Hanley, Zachary J Dureau, Cynthia Cohen, Dong M Shin, Taofeek K Owonikoko, Gabriel L Sica
BACKGROUND: Twenty-seven percent of neuroendocrine tumors (NETs) are associated with distant metastases, and in some patients, the primary site is unknown. Orthopedia homeobox protein (OTP) has been described as a useful marker for lung carcinoids (LCs) and for separating low-grade typical carcinoids (TCs) from intermediate-grade atypical carcinoids (ACs) in resection specimens. This study evaluated OTP, thyroid transcription factor 1 (TTF-1), and Ki-67 expression in fine-needle aspiration (FNA) samples of various NETs...
January 9, 2018: Cancer
https://www.readbyqxmd.com/read/29309924/aggressive-triple-negative-breast-cancers-have-unique-molecular-signature-on-the-basis-of-mitochondrial-genetic-and-functional-defects
#9
Manti Guha, Satish Srinivasan, Pichai Raman, Yuefu Jiang, Brett A Kaufman, Deanne Taylor, Dawei Dong, Rumela Chakrabarti, Martin Picard, Russ P Carstens, Yuko Kijima, Mike Feldman, Narayan G Avadhani
Metastatic breast cancer is a leading cause of cancer-related deaths in women worldwide. Patients with Triple Negative breast cancer (TNBCs), a highly aggressive tumor subtype, have a particularly poor prognosis. Multiple reports demonstrate that altered content of the multicopy mitochondrial genome (mtDNA) in primary breast tumors correlates with poor prognosis. We earlier reported that mtDNA copy number reduction in breast cancer cell lines induces an epithelial-mesenchymal transition associated with metastasis...
January 5, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29307362/metastatic-diseases-of-the-central-nervous-system-neuropathologic-aspects
#10
M Beatriz S Lopes
A large percentage of patients with cancer will develop brain metastases, and many of them will die within a few months following diagnosis of intracranial metastasis. Although the majority of the central nervous system metastases are derived from a well-known primary neoplasm, about 5-10% of brain metastases are from an unknown source, making the tissue diagnosis a first step in the search for a primary malignancy. The pathologist utilizes several immunohistochemical and molecular diagnostic tools for such investigation, helping the clinical oncologist to narrow down the clinical and radiologic exploration...
2018: Handbook of Clinical Neurology
https://www.readbyqxmd.com/read/29307348/the-role-of-surgery-for-brain-metastases-from-solid-tumors
#11
Niklas Thon, Friedrich-Wilhelm Kreth, Joerg-Christian Tonn
Surgery, stereotactic radiosurgery, radiotherapy, and chemotherapy including novel targeted therapy strategies and any combination thereof as well as supportive care are the key elements for treatment of brain metastases. Goals of microsurgery are to obtain tissue samples for histologic diagnosis (particularly in case of uncertainty about the unknown primary tumor but also in the context of future targeted therapies), to relieve burden from space-occupying effects, to improve local tumor control, and to prolong overall survival...
2018: Handbook of Clinical Neurology
https://www.readbyqxmd.com/read/29306996/yap-promotes-migration-and-invasion-of-human-glioma-cells
#12
Yu Zhang, Peng Xie, Xu Wang, Peng Pan, Yan Wang, Hao Zhang, Yu Dong, Yi Shi, Yang Jiang, Rutong Yu, Xiuping Zhou
Previously, we have reported that Yes-associated protein (YAP) is upregulated in human glioma tissues and its level is positively correlated with patient prognosis. However, the role and mechanism of YAP in the highly invasive nature of human gliomas were largely unknown. In this study, examined by wound healing assay, transwell assay, or live-imaging, we found that YAP downregulation inhibited glioma cell migration and invasion, while YAP over-expression promoted them. Interestingly, the above effect of YAP on immortalized glioma cells was recapitulated in cultured primary glioma cells...
January 6, 2018: Journal of Molecular Neuroscience: MN
https://www.readbyqxmd.com/read/29305799/prevention-of-serious-skeletal-related-events-by-interventional-radiology-techniques-in-patients-with-malignant-paraganglioma-and-pheochromocytoma
#13
Guillaume Gravel, Sophie Leboulleux, Lambros Tselikas, Flora Fassio, Mohamed Berraf, Amandine Berdelou, Bakar Ba, Segolene Hescot, Julien Hadoux, Martin Schlumberger, Abir Al Ghuzlan, France Nguyen, Mathieu Faron, Thierry de Baere, Eric Baudin, Frederic Deschamps
PURPOSE: Bone metastases (BM) and skeletal-related events (SRE) are frequent in patients with malignant pheochromocytoma and paraganglioma (PPM) and the best modality of prevention unknown. The role of interventional radiology (IR) techniques for the prevention of SRE in the multidisciplinary management of malignant PPM has not been evaluated in that setting. METHODS: Single referral center retrospective review of all patients with malignant PPM with BM from 2000 to 2016...
January 5, 2018: Endocrine
https://www.readbyqxmd.com/read/29305552/venetoclax-for-patients-with-chronic-lymphocytic-leukemia-who-progressed-during-or-after-idelalisib-therapy
#14
Steven Coutre, Michael Choi, Richard R Furman, Herbert Eradat, Leonard Heffner, Jeffrey A Jones, Brenda Chyla, Lang Zhou, Suresh Agarwal, Tina Waskiewicz, Maria Verdugo, Rod A Humerickhouse, Jalaja Potluri, William G Wierda, Matthew S Davids
B-cell receptor pathway inhibitors (BCRi) have transformed treatment for chronic lymphocytic leukemia (CLL); however, efficacy of therapies for patients whose disease is refractory to/relapses after (R/R) BCRi is unknown. Venetoclax is a selective, orally bioavailable BCL-2 inhibitor with activity in patients with CLL, including those who are heavily pretreated or have 17p deletion. This phase 2 study prospectively evaluated venetoclax in patients with R/R CLL after ibrutinib or idelalisib; here we report on patients who received idelalisib as the last BCRi prior to enrollment...
January 5, 2018: Blood
https://www.readbyqxmd.com/read/29304900/circulating-tumor-cells-and-implications-of-the-epithelial-to-mesenchymal-transition
#15
Lori E Lowes, Alison L Allan
The majority of cancer-related deaths result from metastasis, the process by which cancer cells escape the primary tumor site and enter into the blood circulation in order to disseminate to secondary locations throughout the body. Tumor cells found within the circulation are referred to as circulating tumor cells (CTCs), and their detection and enumeration correlate with poor prognosis. The epithelial-to-mesenchymal transition (EMT) is a dynamic process that imparts epithelial cells with mesenchymal-like properties, thus facilitating tumor cell dissemination and contributing to metastasis...
2018: Advances in Clinical Chemistry
https://www.readbyqxmd.com/read/29304789/fractionated-palliative-thoracic-radiotherapy-in-non-small-cell-lung-cancer-futile-or-worth-while
#16
Malene Støchkel Frank, Dorte Schou Nørøxe, Lotte Nygård, Gitte Fredberg Persson
BACKGROUND: Palliative thoracic radiotherapy (PTR) can relieve symptoms originating from intra-thoracic disease. The optimal timing and fractionation of PTR is unknown. Time to effect is 2 months. The primary aim of this retrospective study was to investigate survival after PTR, hypothesizing that a significant number of patients received futile fractionated PTR. The secondary aim was to find prognostic factors to guide treatment decisions. METHODS: Patients with non-small-cell lung cancer (NSCLC) planned for PTR in the period of 2010-2011 at the University Hospital of Copenhagen were included...
January 5, 2018: BMC Palliative Care
https://www.readbyqxmd.com/read/29291011/transferrin-receptor-1-upregulation-in-primary-tumor-and-downregulation-in-benign-kidney-is-associated-with-progression-and-mortality-in-renal-cell-carcinoma-patients
#17
Christopher J Greene, Kristopher Attwood, Nitika J Sharma, Kenneth W Gross, Gary J Smith, Bo Xu, Eric C Kauffman
The central dysregulated pathway of clear cell (cc) renal cell carcinoma (RCC), the von Hippel Lindau/hypoxia inducible factor-α axis, is a key regulator of intracellular iron levels, however the role of iron uptake in human RCC tumorigenesis and progression remains unknown. We conducted a thorough, large-scale investigation of the expression and prognostic significance of the primary iron uptake protein, transferrin receptor 1 (TfR1/CD71/TFRC), in RCC patients. TfR1 immunohistochemistry was performed in over 1500 cores from 574 renal cell tumor patient tissues (primary tumors, matched benign kidneys, metastases) and non-neoplastic tissues from 36 different body sites...
December 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/29290954/wee1-epigenetically-modulates-5-hmc-levels-by-py37-h2b-dependent-regulation-of-idh2-gene-expression
#18
Nupam P Mahajan, Pavani Malla, Shambhavi Bhagwat, Vasundhara Sharma, Amod Sarnaik, Jongphil Kim, Shari Pilon-Thomas, Jeffery Weber, Kiran Mahajan
Epigenetic signaling networks dynamically regulate gene expression to maintain cellular homeostasis. Previously, we uncovered that WEE1 phosphorylates histone H2B at tyrosine 37 (pY37-H2B) to negatively regulate global histone transcriptional output. Although pY37-H2B is readily detected in cancer cells, its functional role in pathogenesis is not known. Herein, we show that WEE1 deposits the pY37-H2B marks within the tumor suppressor gene, isocitrate dehydrogenase 2 (IDH2), to repress transcription in multiple cancer cells, including glioblastoma multiforme (GBMs), melanoma and prostate cancer...
December 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/29285651/a-long-term-survival-case-treated-with-conversion-surgery-following-chemotherapy-after-diagnostic-metastasectomy-for-pancreatic-cancer-with-synchronous-liver-metastasis
#19
Mitsuhiro Shimura, Masamichi Mizuma, Hiroki Hayashi, Akiko Mori, Tomoyoshi Tachibana, Tatsuo Hata, Masahiro Iseki, Tatsuyuki Takadate, Kyohei Ariake, Shimpei Maeda, Hideo Ohtsuka, Naoaki Sakata, Takanori Morikawa, Kei Nakagawa, Takeshi Naitoh, Takashi Kamei, Fuyuhiko Motoi, Michiaki Unno
BACKGROUND: Pancreatic cancer with distant metastases is classified as "unresectable," for which the standard treatment is systemic chemotherapy. The effectiveness of radical resection for pancreatic cancer with distant metastases is unknown. Here, we report a case of long term survival treated with conversion surgery following chemotherapy after diagnostic metastasectomy for pancreatic cancer with synchronous liver metastasis. CASE PRESENTATION: A 73-year-old man was referred to our hospital to examine and treat for cancer of the pancreatic body...
December 29, 2017: Surgical Case Reports
https://www.readbyqxmd.com/read/29285293/two-new-species-of-betatorqueviruses-identified-in-a-human-melanoma-that-metastasized-to-the-brain
#20
Terry Fei Fan Ng, Jennifer A Dill, Alvin C Camus, Eric Delwart, Erwin G Van Meir
The role of viral infections in the etiology of brain cancer remains uncertain. Prior studies mostly focused on transcriptome or viral DNA integrated in tumor cells. To investigate for the presence of viral particles, we performed metagenomics sequencing on viral capsid-protected nucleic acids from 12 primary and 8 metastatic human brain tumors. One brain tumor metastasized from a skin melanoma harbored two new human anellovirus species, Torque teno mini virus Emory1 (TTMV Emory1) and Emory2 (TTMV Emory2), while the remaining 19 samples did not reveal any exogenous viral sequences...
December 1, 2017: Oncotarget
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