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https://www.readbyqxmd.com/read/28733738/robot-assisted-total-mesorectal-excision-for-rectal-cancer-case-matched-comparison-of-short-term-surgical-and-functional-outcomes-between-the-da-vinci-xi-and-si
#1
Luca Morelli, Gregorio Di Franco, Simone Guadagni, Leonardo Rossi, Matteo Palmeri, Niccolò Furbetta, Desirée Gianardi, Matteo Bianchini, Giovanni Caprili, Cristiano D'Isidoro, Franco Mosca, Andrea Moglia, Alfred Cuschieri
BACKGROUND: Robotic rectal resection with da Vinci Si has some technical limitations, which could be overcome by the new da Vinci Xi. We compare short-term surgical and functional outcomes following robotic rectal resection with total mesorectal excision for cancer, with the da Vinci Xi (Xi-RobTME group) and the da Vinci Si (Si-RobTME group). METHODS: The first consecutive 30 Xi-RobTME were compared with a Si-RobTME control group of 30 patients, selected using a one-to-one case-matched methodology from our prospectively collected Institutional database, comprising all cases performed between April 2010 and September 2016 by a single surgeon...
July 21, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28730369/survival-analysis-in-rectal-carcinoma-after-neoadjuvant-chemoradiation-various-methods-with-different-results
#2
Susanne Merkel, Klaus Weber, Jonas Göhl, Abbas Agaimy, Rainer Fietkau, Werner Hohenberger, Robert Grützmann, Paul Hermanek
PURPOSE: Survival is an important indicator of outcome quality in rectal carcinoma. The 5-year survival rate is the typical outcome measurement. In patients with neoadjuvant chemoradiation followed by curative surgery, 7 years of follow-up is recommended. Different methods of survival analysis lead to different results. Here, we compared four different methods. METHODS: The data of 439 patients with rectal carcinoma treated with neoadjuvant chemoradiation followed by curative total mesorectal excision (TME) surgery between 1995 and 2010 were analysed...
July 20, 2017: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/28723798/the-safety-and-effectiveness-of-robot-assisted-versus-laparoscopic-tme-in-patients-with-rectal-cancer-a-meta-analysis-and-systematic-review
#3
Xiaofei Li, Tao Wang, Liang Yao, Lidong Hu, Penghui Jin, Tiankang Guo, Kehu Yang
BACKGROUND: The aim of this study was to assess the safety and effectiveness of robotic-assisted versus laparoscopic total mesorectal excision (TME) in patients with rectal cancer. METHODS: We systematically searched PubMed, EMBASE, Cochrane library, Web of science, and Chinese Biomedical Literature Database up to July 2016 to identify case-controlled studies that compared robotic TME (RTME) with laparoscopic TME (LTME) for rectal cancer. GRADE was used to interpret the primary outcomes of this meta-analysis...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28723669/multicomponent-analysis-of-the-tumour-microenvironment-reveals-low-cd8-t-cell-number-low-stromal-caveolin-1-and-high-tenascin-c-and-their-combination-as-significant-prognostic-markers-in-non-small-cell-lung-cancer
#4
David Onion, Mark Isherwood, Naveen Shridhar, Mikalena Xenophontos, Madeleine L Craze, Laura J Day, María A García-Márquez, Robert G Pineda, Alexander M Reece-Smith, John H Saunders, John P Duffy, Richard H Argent
The complex interplay of the tumour microenvironment (TME) and its role in disease progression and response to therapy is poorly understood. The majority of studies to date focus on individual components or molecules within the TME and so lack the power correlative analysis. Here we have performed a multi-parameter analysis of the TME in 62 resectable non-small cell lung cancer (NSCLC) specimens detailing number and location of immune infiltrate, assessing markers of cancer-associated fibroblasts, caveolin-1 and tenascin-C, and correlating with clinicopathological details, as well as markers of disease progression such as epithelial-to-mesenchymal transition (EMT)...
June 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28722085/-anatomical-planes-and-landmarks-of-transanal-total-mesorectal-excision-for-rectal-cancer-and-prophylaxis-of-intraoperative-complications
#5
Zhanlong Shen, Yingjiang Ye, Shan Wang
Total mesorectal excision (TME) is a mile-stone procedure in the history of rectal cancer surgery, but the exposure of surgical field of distal rectum is usually poor in patients with male, obese and narrow pelvis, which may lead to tumor residue and relative complications. Recently, a new technique called transanal TME (taTME) is considered to solve the above problems, but most medical centers are still in the learning curve of this procedure. Therefore, anatomical planes and landmarks of taTME for rectal cancer and prophylaxis of intraoperative complications are induced in this paper, which includes posterior plane: angle of anus and distal mesorectum and bleeding of mesorectum; rectosacral fascia and presacral bleeding; lateral and posterior-lateral plane: posterior branches of pelvic plexus and damage of anal function; anterior plane: vessel branches of neurovascular bundle and bleeding...
July 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28714406/role-of-the-immune-component-of-tumor-microenvironment-in-the-efficiency-of-cancer-treatment-perspectives-for-the-personalized-therapy
#6
Marina Stakheyeva, Vladimir Riabov, Irina Mitrofanova, Nikolai Litviakov, Evgeny Choynzonov, Nadezhda Cherdyntseva, Julia Kzhyshkowska
Despite significant progress in cancer diagnostics and development of novel therapeutic regimens, successful treatment of advanced forms of cancer is still a challenge and may require personalized therapeutic approaches. In this review, we analyzed major mechanisms responsible for tumor cells chemoresistance and emphasized that intratumor heterogeneity is a critical factor that limits efficiency of cancer treatment. Intratumor heterogeneity is caused by genomic instability in cancer cells, resulting in the selection of resistant clones...
July 14, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28714017/targeting-vegfr-and-fgfr-in-head-and-neck-squamous-cell-carcinoma-in-vitro
#7
Roman C Brands, Luise M Knierim, Francesco De Donno, Valentin Steinacker, Stefan Hartmann, Axel Seher, Alexander C Kübler, Urs D A Müller-Richter
Head and neck squamous cell carcinoma (HNSCC) is a heterogeneous disease characterized by a tumor microenvironment (TME) that overexpresses vascular endothelial growth factor receptor (VEGFR) and fibroblast growth factor receptor (FGFR), which can lead to neovascularization, tumor growth and metastasis. Therapeutic strategies inhibiting these signaling pathways might lead to innovative HNSCC treatments. Five HNSCC cell lines were characterized based on VEGFR1-3 and FGFR1-4 expression by sqRT-PCR and treated with three different tyrosine kinase inhibitors (TKIs) (nintedanib, dovitinib and pazopanib), all of which are effective against VEGFR and FGFR family members...
July 10, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28711968/local-and-systemic-immunity-predict-survival-in-patients-with-pulmonary-sarcomatoid-carcinoma
#8
Erin Schenk, Jennifer Boland, Aaron Mansfield, Marie Christine Aubry, Allan Dietz
Pulmonary sarcomatoid cancer (PSC) is a rare, aggressive subtype of non-small cell lung cancer, and measures of local and systemic immunity as biomarkers are incompletely known. We performed this study to characterize the leukocyte composition within the tumor, stroma, and peripheral blood in patients with PSC and correlated our findings with overall survival. Tissue from 30 patients diagnosed with PSC was evaluated by IHC for the presence of CD3(+), CD14(+), and CD19(+) cells and PD-L1 expression. A lymphocyte-to-monocyte ratio (LMR) was calculated for the tumor microenvironment (TME) and peripheral blood...
August 2017: Medical Oncology
https://www.readbyqxmd.com/read/28705007/pancreas-adenocarcinoma-novel-therapeutics
#9
Benjamin A Krantz, Kenneth H Yu, Eileen M O'Reilly
Pancreatic ductal adenocarcinoma (PDAC) is the third highest cause of cancer-related deaths in the US, and is projected to be second only to non-small cell lung cancer (NSCLC) by the 2020s. Current therapies have a modest impact on survival and median overall survival (mOS) across all stages of disease remains under a year. Over the last decade, however, great strides have been made in the understanding of PDAC pathobiology including the role of the tumor microenvironment (TME), DNA damage repair and mechanism of immunosuppression...
June 2017: Chinese Clinical Oncology
https://www.readbyqxmd.com/read/28694739/chemotherapy-and-tumor-microenvironment-of-pancreatic-cancer
#10
REVIEW
Qiaofei Liu, Quan Liao, Yupei Zhao
Pancreatic cancer is an extremely dismal malignance. Chemotherapy has been widely applied to treat this intractable tumor. It has exclusive tumor microenvironment (TME), characterized by dense desmoplasia and profound infiltrations of immunosuppressive cells. Interactions between stromal cells and cancer cells play vital roles to affect the biological behaviors of pancreatic cancer. Targeting the stromal components of pancreatic cancer has shown promising results. In addition to the direct toxic effects of chemotherapeutic drugs on cancer cells, they can also remodel the TME, eventually affecting their efficacy...
2017: Cancer Cell International
https://www.readbyqxmd.com/read/28692661/the-extracellular-matrix-and-focal-adhesion-kinase-signaling-regulate-cancer-stem-cell-function-in-pancreatic-ductal-adenocarcinoma
#11
Asma Begum, Theodore Ewachiw, Clinton Jung, Ally Huang, K Jessica Norberg, Luigi Marchionni, Ross McMillan, Vesselin Penchev, N V Rajeshkumar, Anirban Maitra, Laura Wood, Chenguang Wang, Christopher Wolfgang, Ana DeJesus-Acosta, Daniel Laheru, Irina M Shapiro, Mahesh Padval, Jonathan A Pachter, David T Weaver, Zeshaan A Rasheed, William Matsui
Cancer stem cells (CSCs) play an important role in the clonogenic growth and metastasis of pancreatic ductal adenocarcinoma (PDAC). A hallmark of PDAC is the desmoplastic reaction, but the impact of the tumor microenvironment (TME) on CSCs is unknown. In order to better understand the mechanisms, we examined the impact of extracellular matrix (ECM) proteins on PDAC CSCs. We quantified the effect of ECM proteins, β1-integrin, and focal adhesion kinase (FAK) on clonogenic PDAC growth and migration in vitro and tumor initiation, growth, and metastasis in vivo in nude mice using shRNA and overexpression constructs as well as small molecule FAK inhibitors...
2017: PloS One
https://www.readbyqxmd.com/read/28692269/unimolecular-decay-of-the-dimethyl-substituted-criegee-intermediate-in-alkene-ozonolysis-decay-timescales-and-the-importance-of-tunneling
#12
Greg T Drozd, Theo Kurtén, Neil M Donahue, Marsha I Lester
We used the steady-state master equation to model unimolecular decay of the Criegee intermediate formed from ozonolysis of 2,3-dimethyl-2-butene (tetramethyl ethylene, TME). Our results show the relative importance and timescales for both the prompt and thermal unimolecular decay of the dimethyl-substituted Criegee intermediate, (CH3)2COO. Calculated reactive fluxes show the importance of quantum mechanical tunneling for both prompt and thermal decay to OH radical products. We determined the initial energy distribution of chemically activated (CH3)2COO formed in TME ozonolysis by combining microcanonical rates k(E) measured experimentally under collision free conditions and modeled using semi-classical transition-state theory (SCTST) with pressure-dependent yields of stabilized Criegee intermediates measured with scavengers in flow-tube experiments...
July 10, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28691356/tumor-microenvironment-and-noncoding-rnas-as-co-drivers-of-epithelial-mesenchymal-transition-and-cancer-metastasis
#13
REVIEW
Kinan Drak Alsibai, Didier Meseure
Reciprocal interactions between cancer cells and tumor microenvironment (TME) are crucial events in tumor progression and metastasis. Pervasive stromal reprogramming of TME modifies numerous cellular functions including, extracellular matrix (ECM) stiffness, inflammation and immunity. These environmental factors allow selection of more aggressive cells that develop adaptive strategies associating plasticity and epithelial-mesenchymal transition (EMT), stem-like phenotype, invasion, immunosuppression, and resistance to therapies...
July 10, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28690773/recent-advances-in-the-management-of-rectal-cancer-no-surgery-minimal-surgery-or-minimally-invasive-surgery
#14
REVIEW
Joseph M Plummer, Pierre-Anthony Leake, Matthew R Albert
Over the last decade, with the acceptance of the need for improvements in the outcome of patients affected with rectal cancer, there has been a significant increase in the literature regarding treatment options available to patients affected by this disease. That treatment related decisions should be made at a high volume multidisciplinary tumor board, after pre-operative rectal magnetic resonance imaging and the importance of total mesorectal excision (TME) are accepted standard of care. More controversial is the emerging role for watchful waiting rather than radical surgery in complete pathologic responders, which may be appropriate in 20% of patients...
June 27, 2017: World Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28690144/preoperative-long-course-chemoradiotherapy-plus-adjuvant-chemotherapy-versus-short-course-radiotherapy-without-adjuvant-chemotherapy-both-with-delayed-surgery-for-stage-ii-iii-resectable-rectal-cancer-5-year-survival-data-of-a-randomized-controlled-trial
#15
Laura Kairevičė, Tadas Latkauskas, Algimantas Tamelis, Aleksandras Petrauskas, Henrikas Paužas, Tadas Žvirblis, Laimonas Jaruševičius, Žilvinas Saladžinskas, Dainius Pavalkis, Rasa Jančiauskienė
BACKGROUND AND OBJECTIVE: At present, there are common recommendations for treatment for stage II-III resectable rectal cancer patients: preoperative conventional chemoradiotherapy (CRT) with delayed surgery in 6-8 weeks or preoperative short-course radiotherapy (SCRT) followed by immediate surgery. The aim of this study was to compare overall survival (OS) and disease-free survival (DFS) in two treatment groups: preoperative SCRT and CRT both with delayed surgery plus adjuvant chemotherapy in CRT arm...
June 22, 2017: Medicina
https://www.readbyqxmd.com/read/28687621/cancer-associated-fibroblasts-share-characteristics-and-pro-tumorigenic-activity-with-mesenchymal-stromal-cells
#16
Lucia Borriello, Rie Nakata, Michael A Sheard, G Esteban Fernandez, Richard Sposto, Jemily Malvar, Laurence Blavier, Hiroyuki Shimada, Shahab Asgharzadeh, Robert C Seeger, Yves A DeClerck
Cancer-associated fibroblasts (CAF) have been suggested to originate from mesenchymal stromal cells (MSC), but their relationship to MSC is not clear. Here we have isolated from primary human neuroblastoma (NB) tumors a population of αFAP- and FSP-1-expressing CAF that share phenotypic and functional characteristics with bone marrow-derived MSC (BM-MSC). Analysis of human NB tumors also confirmed the presence of αFAP- and FSP-1-positive cells in the tumor stroma, and their presence correlated with that of M2 tumor-associated macrophages...
July 7, 2017: Cancer Research
https://www.readbyqxmd.com/read/28682630/elucidation-of-the-cryptic-methyl-group-epimerase-activity-of-dehydratase-domains-from-modular-polyketide-synthases-using-a-tandem-modules-epimerase-assay
#17
Xinqiang Xie, Ashish Garg, Chaitan Khosla, David E Cane
Dehydratase (DH) domains of cryptic function are often found in polyketide synthase (PKS) modules that produce epimerized (2S)-2-methyl-3-ketoacyl-ACP (acyl carrier protein) intermediates. A combination of tandem equilibrium isotope exchange (EIX) and a newly developed Tandem Modules Epimerase assay revealed the intrinsic epimerase activity of NanDH1 and NanDH5, from modules 1 and 5, respectively, of the nanchangmycin (1) PKS as well of NigDH1, from module 1 of the nigericin (3) PKS. Unexpectedly, all three epimerase-active DH domains were also found to possess intrinsic dehydratase activity, whereas the conventional DH domains, EryDH4, from module 4 of the erythromycin synthase, and NanDH2 from module 2 of the nanchangmycin synthase, were shown to have cryptic epimerase activity...
July 7, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28681373/the-role-of-tumor-associated-macrophage-in-breast-cancer-biology
#18
REVIEW
Junjeong Choi, Jones Gyamfi, Haerin Jang, Ja Seung Koo
Breast cancer is the most commonly diagnosed malignant tumor in women worldwide and contributes significantly as the primary cause of female cancer related mortality. Hence, research is focused on discovering new and effective treatment targets. The breast tumor microenvironment (TME) comprising of recruited host stromal cells and tumor cells, has recently emerged as an important player in tumor progression, with the potential for future treatment. The TME comprises immune system elements (such as macrophages and lymphocytes), cells composing blood vessel, fibroblast, myofibroblast, mesenchymal stem cells, adipocytes and extracellular matrix (ECM)...
July 6, 2017: Histology and Histopathology
https://www.readbyqxmd.com/read/28680760/tbet-and-il-36%C3%AE-cooperate-in-therapeutic-dc-mediated-promotion-of-ectopic-lymphoid-organogenesis-in-the-tumor-microenvironment
#19
Aliyah M Weinstein, Lu Chen, Emily A Brzana, Prashanti R Patil, Jennifer L Taylor, Kellsye L Fabian, Callen T Wallace, Sabrina D Jones, Simon C Watkins, Binfeng Lu, David F Stroncek, Timothy L Denning, Yang-Xin Fu, Peter A Cohen, Walter J Storkus
We have previously reported that direct injection of dendritic cells (DC) engineered to express the Type-1 transactivator Tbet (i.e., DC.Tbet) into murine tumors results in antitumor efficacy in association with the development of structures resembling tertiary lymphoid organs (TLO) in the tumor microenvironment (TME). These TLO contained robust infiltrates of B cells, DC, NK cells, and T cells in proximity to PNAd(+) blood vessels; however, they were considered incomplete, since the recruited B cells failed to organize into classic germinal center-like structures...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28680744/intratumoral-delivery-of-tumor-antigen-loaded-dc-and-tumor-primed-cd4-t-cells-combined-with-agonist-%C3%AE-gitr-mab-promotes-durable-cd8-t-cell-dependent-antitumor-immunity
#20
Zuqiang Liu, Xingxing Hao, Yi Zhang, Jiying Zhang, Cara D Carey, Louis D Falo, Walter J Storkus, Zhaoyang You
The progressive tumor microenvironment (TME) coordinately supports tumor cell expansion and metastasis, while it antagonizes the survival and (poly-)functionality of antitumor T effector cells. There remains a clear need to develop novel therapeutic strategies that can transform the TME into a pro-inflammatory niche that recruits and sustains protective immune cell populations. While intravenous treatment with tumor-primed CD4(+) T cells combined with intraperitoneal delivery of agonist anti-glucocorticoid-induced TNF receptor (α-GITR) mAb results in objective antitumor responses in murine early stage disease models, this approach is ineffective against more advanced tumors...
2017: Oncoimmunology
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