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https://www.readbyqxmd.com/read/28449509/rapid-response-in-a-critical-lung-adenocarcinoma-presenting-as-large-airway-stenoses-after-receiving-stent-implantation-and-sequential-rebiopsy-guided-alk-inhibitor-therapy-a-case-report
#1
Ling Ding, Cheng Chen, Yuan-Yuan Zeng, Jian-Jie Zhu, Jian-An Huang, Ye-Han Zhu
Airway stent implantation can improve the symptoms of airway stenosis caused by a malignant tumor immediately. However, stent implantation is only a palliative therapy and disease will quickly progress without subsequent treatment. Targeted therapy can provide accurate etiological treatment for patients with critical lung cancer who cannot receive chemotherapies. In our clinic, we encountered a 50-year-old male presenting with stage IV lung adenocarcinoma. He failed both the first-line and second-line chemotherapies and suffered severe complex left and right main bronchial stenoses caused by tumor invasion...
March 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28449496/the-mechanisms-of-radioresistance-in-esophageal-squamous-cell-carcinoma-and-current-strategies-in-radiosensitivity
#2
REVIEW
Guang-Zong Chen, Hong-Cheng Zhu, Wang-Shu Dai, Xiao-Ning Zeng, Jin-Hua Luo, Xin-Chen Sun
Esophageal cancer is the eighth most common cancer and the sixth leading cause of cancer-related death worldwide. Surgery is the primary form of treatment, but the survival is poor, especially for patients with locally advanced esophageal cancer. Radiotherapy has been a critical treatment option that may be combined with chemotherapy in patients with unresectable esophageal cancer. However, resistance to chemoradiotherapy might result in treatment failures and cancer relapse. This review will mainly focus on the possible cellular mechanisms and tumor-associated microenvironmental (TAM) factors that result in radioresistance in patients with esophageal cancer...
March 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28449488/clinicopathological-features-of-chinese-lung-cancer-patients-with-epidermal-growth-factor-receptor-mutation
#3
Hui Ning, Ming Liu, Lina Wang, Yang Yang, Nan Song, Xiaoxiong Xu, Jin Ju, Gening Jiang
BACKGROUND: Epidermal growth factor receptor (EGFR) gene was the major causative gene of lung cancer and also the specific treatment target. It is necessary to analyze the genotype and phenotype characters of patients. METHODS: We investigated 1,034 lung cancer patients in this study. The collected clinicopathological parameters included gender, age at diagnosis, smoking status, pathological TNM stage, tumor morphology and location, visceral pleural invasion as well as histological type...
March 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28449469/cd90-positive-cells-exhibit-aggressive-radioresistance-in-esophageal-squamous-cell-carcinoma
#4
Yuandong Wang, Chi Zhang, Hongcheng Zhu, Junwei Tang, Shu Zhang, Jinhua Luo, Xinchen Sun
BACKGROUND: Cancer stem cells (CSCs) are widely abundant and considered to be an important factor in therapy resistance. They are also promising potential targets for conquering tumors. We explored the effects of radiation on stem cell-like tumor cells via the candidate marker CD90 to provide new ideas for the comprehensive treatment of esophageal squamous cell carcinoma (ESCC). METHODS: We constructed CD90 overexpression ESCC cells by lentiviral transfection and observed differences of toxicity, proliferation, clone number, apoptosis, migration, invasion, and in vivo tumor formation after irradiation...
March 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28449421/-the-role-of-micrornas-in-colorectal-cancer
#5
REVIEW
Sang Wook Kim
Colorectal cancer (CRC) is one of the leading causes of cancer related deaths in the world. Many oncogenes and tumor suppressor genes are involved in the development of CRC. MicroRNAs (miRNAs) are a class of small, non-coding, endogenous RNAs in animals and plants. Recent studies have shown that miRNAs are associated with the mediation process of tumorigenesis, including inflammation, cell cycle, stress response, differentiation, apoptosis, migration, and invasion in cancer. These miRNAs have been linked to the development of CRC and recently studied as new potential biomarkers in the diagnosis and treatment for CRC...
April 25, 2017: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
https://www.readbyqxmd.com/read/28449403/effects-of-malnutrition-on-treatment-related-morbidity-and-survival-of-children-with-cancer-in-nicaragua
#6
Allison K Pribnow, Roberta Ortiz, Luis Fulgencio Báez, Luvy Mendieta, Sandra Luna-Fineman
BACKGROUND: Most children with cancer live in resource-limited countries where malnutrition is often prevalent. We identified the relationship between malnutrition and treatment-related morbidity (TRM), abandonment of therapy, and survival of children with cancer in Nicaragua to better inform targeted nutritional interventions. PROCEDURE: We conducted a retrospective review of patients aged 6 months to 18 years with newly diagnosed acute lymphoblastic leukemia, acute myeloid leukemia (AML), Wilms tumor, Hodgkin lymphoma, or Burkitt lymphoma (BL) who were treated between January 1, 2004, and December 31, 2007 at Children's Hospital Manuel de Jesus Rivera in Managua, Nicaragua...
April 27, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28449309/tumor-targeting-with-an-isodgr-drug-conjugate
#7
Simone Zanella, Simona Angerani, Pina Arianna, Paula López Rivas, Clelia Giannini, Silvia Panzeri, Daniela Arosio, Michele Caruso, Fabio Gasparri, Ivan Fraietta, Clara Albanese, Aurelio Marsiglio, Luca Pignataro, Laura Belvisi, Umberto Piarulli, Cesare Gennari
Here we report the first example of an isoDGR-drug conjugate (2), designed to release paclitaxel selectively within cancer cells expressing integrin αVβ3. Conjugate 2 was synthesized by connecting the isoDGR peptidomimetic 5 with paclitaxel via the lysosomally cleavable Val-Ala dipeptide linker. Conjugate 2 displayed a low nanomolar affinity for the purified integrin αVβ3 receptor (IC50 = 11.0 nM). The tumor targeting ability of conjugate 2 was assessed in vitro in anti-proliferative assays on two isogenic cancer cell lines characterized by different integrin αVβ3 expression: human glioblastoma U87 (αVβ3 +) and U87 β3-KO (αVβ3 -)...
April 27, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28449236/discovery-of-lhrh-and-development-of-lhrh-analogs-for-prostate-cancer-treatment
#8
Andrew V Schally, Norman L Block, Ferenc G Rick
The discovery, isolation, elucidation of structure, synthesis, and initial testing of the neuropeptide hypothalamic luteinizing hormone-releasing hormone (LHRH), which regulates reproduction, is briefly described. The design, synthesis, and experimental and clinical testing of agonistic analogs of LHRH is extensively reviewed focusing on the development of new methods for the treatment of prostate cancer. Subsequent development of antagonistic analogs of LHRH is then faithfully recounted with special emphasis on therapy of prostate cancer and BPH...
April 27, 2017: Prostate
https://www.readbyqxmd.com/read/28448960/utility-of-genomic-analysis-in-differentiating-synchronous-and-metachronous-lung-adenocarcinomas-from-primary-adenocarcinomas-with-intrapulmonary-metastasis
#9
Jad Saab, Hamid Zia, Susan Mathew, Michael Kluk, Navneet Narula, Helen Fernandes
Distinguishing synchronous and metachronous primary lung adenocarcinomas from adenocarcinomas with intrapulmonary metastasis is essential for optimal patient management. In this study, multiple lung adenocarcinomas occurring in the same patient were evaluated using comprehensive histopathologic evaluation supplemented with molecular analysis. The cohort included 18 patients with a total of 52 lung adenocarcinomas. Eleven patients had a new diagnosis of multiple adenocarcinomas in the same lobe (n=5) or different lobe (n=6)...
April 24, 2017: Translational Oncology
https://www.readbyqxmd.com/read/28448958/evaluation-of-f8-tnf-%C3%AE-in-models-of-early-and-progressive-metastatic-osteosarcoma
#10
Bernhard Robl, Sander Martijn Botter, Aleksandar Boro, Daniela Meier, Dario Neri, Bruno Fuchs
The targeted delivery of tumor necrosis factor-α (TNF-α) with antibodies specific to splice isoforms of fibronectin [e.g., F8-TNF, specific to the extra-domain A (EDA) domain of fibronectin] has already shown efficacy against experimental sarcomas but has not yet been investigated in orthotopic sarcomas. Here, we investigated F8-TNF in a syngeneic K7 M2-derived orthotopic model of osteosarcoma as a treatment against pulmonary metastases, the most frequent cause of osteosarcoma-related death. Immunofluorescence on human osteosarcoma tissue confirmed the presence of EDA in primary tumors (PTs) as well as metastases...
April 24, 2017: Translational Oncology
https://www.readbyqxmd.com/read/28448870/knockdown-of-msp58-inhibits-the-proliferation-and-metastasis-in-human-renal-cell-carcinoma-cells
#11
Xiaoqiang Zhai, Yan Wu, Dong Zhang, Tie Chong, Jun Zhao
The 58-kDa microspherule protein (MSP58) has been reported to play an important role in the tumorigenesis and progression of cancers. However, little is known about the role of MSP58 in human renal cell carcinoma (RCC). In this study, we investigated the expression and biological roles of MSP58 in RCC. The results indicated that the expressions of MSP58 at both mRNA and protein levels were greatly up-regulated in human RCC tissues and cell lines. Down-regulation of MSP58 significantly suppressed the proliferation, migration/invasion of RCC cells, as well as attenuated tumor growth in a 786-O xenograft model in vivo...
April 24, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28448866/function-of-microrna-143-in-different-signal-pathways-in-cancer-new-insights-into-cancer-therapy
#12
REVIEW
Leila Karimi, Behzad Mansoori, Dariush Shanebandi, Ali Mohammadi, Mahyar Aghapour, Behzad Baradaran
MicroRNAs (miRNAs) are small non-coding RNAs which participate in the post-transcriptional regulation of gene expression. They play important roles in cellular events such as growth and differentiation. Deregulation of miRNAs is frequently evident in human cancers where their aberrant expression is associated with uncontrolled proliferation, metastasis, impaired cell cycle and DNA damage response. The miRNAs are important in cancer as ∼50% of miRNA genes are located in cancer-associated regions such as fragile sites of genome...
April 24, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28448782/amcp-partnership-forum-driving-value-and-outcomes-in-oncology
#13
(no author information available yet)
Innovation in cancer treatment has provided a wealth of recently available therapeutic agents and a healthy drug pipeline that promises to change the way we approach this disease and the lives of those affected in the years to come. However, the majority of these new agents, many of which are targeted to specific genomic features of various tumors, may challenge the health care system's ability to afford cancer care. This innovation drives the need to focus on the value of the treatments provided to patients with cancer and on methods to optimize the efficiency of the dollars we spend, in addition to the clinical value itself...
May 2017: Journal of Managed Care & Specialty Pharmacy
https://www.readbyqxmd.com/read/28448765/digital-assays-part-i-partitioning-statistics-and-digital-pcr
#14
Amar S Basu
A digital assay is one in which the sample is partitioned into many small containers such that each partition contains a discrete number of biological entities (0, 1, 2, 3, …). A powerful technique in the biologist's toolkit, digital assays bring a new level of precision in quantifying nucleic acids, measuring proteins and their enzymatic activity, and probing single-cell genotypes and phenotypes. Part I of this review begins with the benefits and Poisson statistics of partitioning, including sources of error...
April 1, 2017: SLAS Technology
https://www.readbyqxmd.com/read/28448747/a-hierarchical-bayesian-design-for-randomized-phase-ii-clinical-trials-with-multiple-groups
#15
Jun Yin, Rui Qin, Daniel J Sargent, Charles Erlichman, Qian Shi
Enhanced knowledge of the biological and genetic basis of cancer is re-defining target population for new treatments. In oncology, potential targets for a new therapeutic agent often include various solid and hematologic malignancies that share common signaling pathways. New agents are often tested in multiple tumor types across which information can be borrowed. We propose a hierarchical Bayesian design (HBD) to simultaneously test a novel agent in multiple groups for randomized phase II clinical trials with binary endpoints...
April 27, 2017: Journal of Biopharmaceutical Statistics
https://www.readbyqxmd.com/read/28448535/alpha-1-antitrypsin-supplementation-improves-alveolar-macrophages-efferocytosis-and-phagocytosis-following-cigarette-smoke-exposure
#16
Karina A Serban, Daniela N Petrusca, Andrew Mikosz, Christophe Poirier, Angelia D Lockett, Lauren Saint, Matthew J Justice, Homer L Twigg, Michael A Campos, Irina Petrache
Cigarette smoking (CS), the main risk factor for COPD (chronic obstructive pulmonary disease) in developed countries, decreases alveolar macrophages (AM) clearance of both apoptotic cells and bacterial pathogens. This global deficit of AM engulfment may explain why active smokers have worse outcomes of COPD exacerbations, episodes characterized by airway infection and inflammation that carry high morbidity and healthcare cost. When administered as intravenous supplementation, the acute phase-reactant alpha-1 antitrypsin (A1AT) reduces the severity of COPD exacerbations in A1AT deficient (AATD) individuals and of bacterial pneumonia in murine models, but the effect of A1AT on AM scavenging functions has not been reported...
2017: PloS One
https://www.readbyqxmd.com/read/28448514/a-new-gtf2i-braf-fusion-mediating-mapk-pathway-activation-in-pilocytic-astrocytoma
#17
Tajana Tešan Tomić, Josefin Olausson, Annica Wilzén, Magnus Sabel, Katarina Truvé, Helene Sjögren, Sándor Dósa, Magnus Tisell, Birgitta Lannering, Fredrik Enlund, Tommy Martinsson, Pierre Åman, Frida Abel
Pilocytic astrocytoma (PA) is the most common pediatric brain tumor. A recurrent feature of PA is deregulation of the mitogen activated protein kinase (MAPK) pathway most often through KIAA1549-BRAF fusion, but also by other BRAF- or RAF1-gene fusions and point mutations (e.g. BRAFV600E). These features may serve as diagnostic and prognostic markers, and also facilitate development of targeted therapy. The aims of this study were to characterize the genetic alterations underlying the development of PA in six tumor cases, and evaluate methods for fusion oncogene detection...
2017: PloS One
https://www.readbyqxmd.com/read/28448437/sulfiredoxin-may-promote-cervical-cancer-metastasis-via-wnt-%C3%AE-catenin-signaling-pathway
#18
Kangyun Lan, Yuni Zhao, Yue Fan, Binbin Ma, Shanshan Yang, Qin Liu, Hua Linghu, Hui Wang
The abnormal elevation of sulfiredoxin (Srx/SRXN1)-an antioxidant enzyme whose main function is to protect against oxidative stress-has been shown to be closely correlated with the progression of several types of cancer, including human cervical cancer. However, the molecular mechanism by which Srx promotes tumor progression, especially cancer metastasis in cervical cancer, has not been elucidated. Here, we show that Srx expression gradually increases during the progression of human cervical cancer and its expression level is closely correlated with lymph node metastasis...
April 27, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28448404/dynamic-contrast-enhanced-magnetic-resonance-imaging-of-ocular-melanoma-as-a-tool-to-predict-metastatic-potential
#19
Wenbo Wei, Guang Jia, Hendrik von Tengg-Kobligk, Johannes T Heverhagen, Mohamed Abdel-Rahman, Lai Wei, John B Christoforidis, Frederick Davidorf, Michael V Knopp
PURPOSE: This study explores the capability of dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) to differentiate tumor characteristics of metastatic and nonmetastatic choroidal melanoma as a potential tool for patient management. MATERIALS AND METHODS: A total of 13 patients (69 ± 9 years) with choroidal melanoma were imaged using DCE-MRI on a 3-T MRI system with a 16-channel head coil. The Tofts 2-compartment model was chosen for quantification, and parameters K (the transfer constant from the blood plasma to the extracellular space) and Kep (the transfer constant from the extracellular space to the blood plasma) were calculated and compared...
April 26, 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28448116/quantitative-examination-of-the-active-targeting-effect%C3%AF-the-key-factor-for-maximal-tumor-accumulation-and-retention-of-short-circulated-biopolymeric-nanocarriers
#20
Jianquan Wang, Gee Young Lee, Qian Lu, Xianghong Peng, Jiangxiao Wu, Siyuan Wu, Brad A Kairdolf, Shuming Nie, Yiqing Wang, Lucas A Lane
Targeted and non-targeted biopolymeric nanoparticles with identical hydrodynamic sizes and surface charges were quantitatively examined in terms of the pharmacokinetic and biodistribution differences in detail. In adding cancer cell targeting folate molecules to the surface of the heparin nanocarriers, the amount of drug delivered to the tumor is doubled and tumor growth inhibition is significantly enhanced. The folate-targeted heparin particles offered similar therapeutic potentials compared to their synthetic long-circulating analogues, thus presenting a viable alternative for drug delivery vehicle construction using biological polymers which are easier for the body to eliminate...
April 27, 2017: Bioconjugate Chemistry
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