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https://www.readbyqxmd.com/read/28108967/specific-sites-of-metastases-in-invasive-lobular-carcinoma-a-retrospective-cohort-study-of-metastatic-breast-cancer
#1
Masayuki Inoue, Hiroshi Nakagomi, Haruka Nakada, Kazushige Furuya, Kou Ikegame, Hideki Watanabe, Masao Omata, Toshio Oyama
BACKGROUND: Invasive lobular carcinoma (ILC) is known to be the second most common histological type following invasive ductal carcinoma (IDC). Definitive clinical features of ILC are controversial. METHODS: We retrospectively analyzed a cohort of 330 patients with metastatic breast cancer, 303 of IDC, 19 of ILC, and 8 of others. We compared the patient age and tumor-node-metastasis factors, disease-free survival (DFS), estrogen receptor (ER), progesterone receptor (PR), and human epidermal growth factor 2 (HER2) expression at the primary site between ILC and IDC...
January 20, 2017: Breast Cancer: the Journal of the Japanese Breast Cancer Society
https://www.readbyqxmd.com/read/28108507/flt3-and-jak2-mutations-in-acute-myeloid-leukemia-promote-inter-chromosomal-homologous-recombination-and-the-potential-for-copy-neutral-loss-of-heterozygosity-cn-loh
#2
Terry J Gaymes, Azim Mohamedali, Anthony Eiliazadeh, David Darling, Ghulam J Mufti
Acquired copy neutral loss-of-heterozygosity (CN-LOH) is a frequent occurrence in myeloid malignancies and is often associated with resistance to standard therapeutic modalities and poor survival. Here we show that constitutive signaling driven by mutated FLT3 and JAK2 confers inter-chromosomal homologous recombination (iHR), a precedent for CN-LOH. Using a targeted recombination assay, we determined significant iHR activity in internal tandem duplication FLT3 (FLT3-ITD) and JAK2V617F mutated cells. Sister chromatid exchanges, a surrogate measure of iHR, was significantly elevated in primary FLT3-ITD normal karyotype acute myeloid leukemia (NK-AML) compared to wild type FLT3 NK-AML...
January 20, 2017: Cancer Research
https://www.readbyqxmd.com/read/28107719/occurrence-and-elimination-of-antibiotic-resistance-genes-in-a-long-term-operation-integrated-surface-flow-constructed-wetland
#3
Hansun Fang, Qin Zhang, Xiangping Nie, Baowei Chen, Yuandong Xiao, Qiubai Zhou, Wei Liao, Ximei Liang
Wetland construction is a recommended domestic sewage treatment technique, owing to its simplicity and cost efficiency. Concentrations of 14 antibiotic resistance genes (ARGs) in an integrated surface flow constructed wetland (ICW) steadily operated over 10 years were investigated in the winter and summer. Domestic sewage was observed to be the primary source of ARGs in the ICW, and 77.8% and 59.5% removal rates of total targeted ARGs in the ICW were achieved in the winter and summer, respectively. Concentrations of five ARGs (sul1, tetA, tetC, tetE, and qnrS) in the winter and of six ARGs (sul1, sul3, tetA, tetC, tetE, and qnrS) in the summer were increased throughout the treatment process...
January 6, 2017: Chemosphere
https://www.readbyqxmd.com/read/28107512/nonstructural-5a-protein-of-hepatitis-c-virus-interferes-with-toll-like-receptor-signaling-and-suppresses-the-interferon-response-in-mouse-liver
#4
Takeya Tsutsumi, Kazuya Okushin, Kenichiro Enooku, Hidetaka Fujinaga, Kyoji Moriya, Hiroshi Yotsuyanagi, Hideki Aizaki, Tetsuro Suzuki, Yoshiharu Matsuura, Kazuhiko Koike
The hepatitis C virus nonstructural protein NS5A is involved in resistance to the host immune response, as well as the viral lifecycle such as replication and maturation. Here, we established transgenic mice expressing NS5A protein in the liver and examined innate immune responses against lipopolysaccharide (LPS) in vivo. Intrahepatic gene expression levels of cytokines such as interleukin-6, tumor necrosis factor-α, and interferon-γ were significantly suppressed after LPS injection in the transgenic mouse liver...
2017: PloS One
https://www.readbyqxmd.com/read/28107509/development-of-combining-of-human-bronchial-mucosa-models-with-xposeali%C3%A2-for-exposure-of-air-pollution-nanoparticles
#5
Jie Ji, Anna Hedelin, Maria Malmlöf, Vadim Kessler, Gulaim Seisenbaeva, Per Gerde, Lena Palmberg
BACKGROUND: Exposure to agents via inhalation is of great concerns both in workplace environment and in the daily contact with particles in the ambient air. Reliable human airway exposure systems will most likely replace animal experiment in future toxicity assessment studies of inhaled agents. METHODS: In this study, we successfully established a combination of an exposure system (XposeALI) with 3D models mimicking both healthy and chronic bronchitis-like mucosa by co-culturing human primary bronchial epithelial cells (PBEC) and fibroblast at air-liquid interface (ALI)...
2017: PloS One
https://www.readbyqxmd.com/read/28107364/genetic-attributes-of-e-coli-isolates-from-chlorinated-drinking-water
#6
Michaela D J Blyton, David M Gordon
Escherichia coli, is intimately associated with both human health and water sanitation. E. coli isolates from water can either be (i) host associated commensals, indicating recent faecal contamination; (ii) diarrheal pathogens or (iii) extra-intestinal pathogens that pose a direct health risk; or (iv) free-living. In this study we genetically characterised 28 E. coli isolates obtained from treated drinking water in south eastern Australia to ascertain their likely source. We used full genome sequencing to assign the isolates to their phylogenetic group and multi-locus sequence type...
2017: PloS One
https://www.readbyqxmd.com/read/28107284/postsurgical-perforation-of-the-esophagus-can-be-treated-using-a-fully-covered-stent-in-children
#7
Chantal Chauvet, Arnaud Bonnard, Alexis Mosca, Marc Bellaïche, Pascale Philippe-Chomette, Jérôme Viala
OBJECTIVES: Surgery and conservative treatment of esophageal or gastric perforations are both often associated with poor results and carry a high morbidity and mortality rate. The aim of the present study was to evaluate the effectiveness and safety of using fully covered self-expending metallic stents (SEMS) in children with upper digestive leaks. METHODS: This retrospective study reviewed all children with esophageal or gastric perforation who were treated with placement of an SEMS from January 2011 to January 2015...
February 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28107182/the-nitrobenzoxadiazole-derivative-mc3181-blocks-melanoma-invasion-and-metastasis
#8
Anastasia De Luca, Debora Carpanese, Maria Cristina Rapanotti, Tara Mayte Suarez Viguria, Maria Antonietta Forgione, Dante Rotili, Chiara Fulci, Egidio Iorio, Luigi Quintieri, Sergio Chimenti, Luca Bianchi, Antonio Rosato, Anna Maria Caccuri
The novel nitrobenzoxadiazole (NBD) derivative MC3181 is endowed with remarkable therapeutic activity in mice bearing both sensitive and vemurafenib-resistant human melanoma xenografts. Here, we report that subtoxic concentrations of this compound significantly reduced invasiveness of BRAF-V600D mutated WM115 and WM266.4 melanoma cell lines derived from the primary lesion and related skin metastasis of the same patient, respectively. The strong antimetastatic activity of MC3181 was observed in both 2D monolayer cultures and 3D multicellular tumor spheroids, and confirmed in vivo by the significant decrease in the number of B16-F10 melanoma lung metastases in drug-treated mice...
January 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/28107001/systemic-stress-and-recovery-patterns-of-rice-roots-in-response-to-graphene-oxide-nanosheets
#9
Qixing Zhou, Xiangang Hu
The interactions between nanomaterials and plants have attracted increasing attention. However, the systemic stress and recovery patterns of plants in response to nanomaterials and the connections between the molecular responses and phenotypes remain unclear. Herein, rice was exposed to graphene oxide (GO) nanosheets at 0.01-1 mg/L for 7 days under hydroponic exposure, followed by a 7-day post-exposure (GO-free). The significant upregulation (p<0.05) of phenylalanine metabolism, secondary metabolism and heme peroxidase reflected the stress and recovery patterns of rice roots exposed to GO...
January 20, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28105769/renal-tubular-resistance-is-the-primary-driver-for-loop-diuretic-resistance-in-acute-heart-failure
#10
Jozine M Ter Maaten, Veena S Rao, Jennifer S Hanberg, F Perry Wilson, Lavanya Bellumkonda, Mahlet Assefa, J Sam Broughton, Julie D'Ambrosi, W H Wilson Tang, Kevin Damman, Adriaan A Voors, David H Ellison, Jeffrey M Testani
BACKGROUND: Loop diuretic resistance is a common barrier to effective decongestion in acute heart failure (AHF), and is associated with poor outcome. Specific mechanisms underlying diuretic resistance are currently unknown in contemporary AHF patients. We therefore aimed to determine the relative importance of defects in diuretic delivery vs. renal tubular response in determining diuretic response (DR) in AHF. METHODS AND RESULTS: Fifty AHF patients treated with intravenous bumetanide underwent a 6-h timed urine collection for sodium and bumetanide clearance...
January 19, 2017: European Journal of Heart Failure
https://www.readbyqxmd.com/read/28105698/characterization-and-in-vivo-regulon-determination-of-an-ecf-sigma-factor-and-its-cognate-anti-sigma-factor-in-nostoc-punctiforme
#11
Nicole Bell, Jamie J Lee, Michael L Summers
Based on primary sequence comparisons and genomic context, Npun_F4153 (SigG)/Npun_F4154 (SapG) of the cyanobacterium Nostoc punctiforme were hypothesized to encode an ECF sigma factor/anti-sigma factor pair. Transcription of sigG increased in heterocysts and akinetes, and after EDTA treatment. Interaction between SigG and the predicted cytoplasmic domain of SapG was observed in vitro. A SigG-GFP translational fusion protein localized to the periphery of vegetative cells in vivo, but lost this association following heat stress...
January 20, 2017: Molecular Microbiology
https://www.readbyqxmd.com/read/28105330/genetic-markers-associated-with-resistance-to-beta-lactam-and-quinolone-antimicrobials-in-non-typhoidal-salmonella-isolates-from-humans-and-animals-in-central-ethiopia
#12
Tadesse Eguale, Josephine Birungi, Daniel Asrat, Moses N Njahira, Joyce Njuguna, Wondwossen A Gebreyes, John S Gunn, Appolinaire Djikeng, Ephrem Engidawork
BACKGROUND: Beta-lactam and quinolone antimicrobials are commonly used for treatment of infections caused by non-typhoidal Salmonella (NTS) and other pathogens. Resistance to these classes of antimicrobials has increased significantly in the recent years. However, little is known on the genetic basis of resistance to these drugs in Salmonella isolates from Ethiopia. METHODS: Salmonella isolates with reduced susceptibility to beta-lactams (n = 43) were tested for genes encoding for beta-lactamase enzymes, and those resistant to quinolones (n = 29) for mutations in the quinolone resistance determining region (QRDR) as well as plasmid mediated quinolone resistance (PMQR) genes using PCR and sequencing...
2017: Antimicrobial Resistance and Infection Control
https://www.readbyqxmd.com/read/28105240/transforming-growth-factor-%C3%AE-1-enhances-stemness-of-head-and-neck-squamous-cell-carcinoma-cells-through-activation-of-wnt-signaling
#13
Woo-Jin Bae, Sang-Hyuk Lee, Young-Soo Rho, Bon-Seok Koo, Young-Chang Lim
Transforming growth factor β (TGFβ) ligands, including TGFβ1, are multifunctional cytokines known as key regulators of cell growth, differentiation and inflammation. Dysregulated TGFβ signaling is common in numerous solid tumors, including head and neck squamous cell carcinoma (HNSCC). Previously, TGFβ ligands were also reported to be associated with an enhancement of stemness in glioma stem-like cells. However, their role in HNSCC cancer stem cells (CSCs) has not been explored. The present study demonstrated that TGFβ1 enriches the properties of HNSCC CSCs...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28104990/sitagliptin-in-patients-with-non-alcoholic-steatohepatitis-a-randomized-placebo-controlled-trial
#14
Tisha R Joy, Charles A McKenzie, Rommel G Tirona, Kelly Summers, Shannon Seney, Subrata Chakrabarti, Neel Malhotra, Melanie D Beaton
AIM: To evaluate the effect of sitagliptin vs placebo on histologic and non-histologic parameters of non-alcoholic steatohepatitis (NASH). METHODS: Twelve patients with biopsy-proven NASH were randomized to sitagliptin (100 mg daily) (n = 6) or placebo (n = 6) for 24 wk. The primary outcome was improvement in liver fibrosis after 24 wk. Secondary outcomes included evaluation of changes in NAFLD activity score (NAS), individual components of NAS (hepatocyte ballooning, lobular inflammation, and steatosis), glycemic control and insulin resistance [including measurements of glycated hemoglobin (HbA1C) and adipocytokines], lipid profile including free fatty acids, adipose distribution measured using magnetic resonance imaging (MRI), and thrombosis markers (platelet aggregation and plasminogen activator inhibitor 1 levels)...
January 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28104513/a-multi-center-study-of-bacterial-blood-stream-infections-in-pediatric-allogeneic-hematopoietic-cell-transplantation-recipients-the-role-of-acute-gastrointestinal-graft-versus-host-disease
#15
Prakash Satwani, Jason L Freedman, Sonali Chaudhury, Zhezhen Jin, Anya Levinson, Marc D Foca, Jennifer Krajewski, Indira Sahdev, Mala Kiran Talekar, Aliza Gardenswartz, Justin Silverman, Meghan Hayes, Christopher C Dvorak
Blood stream infections (BSI) caused by enteric organisms are associated with a particularly high mortality rate in allogeneic hematopoietic cell transplantation (AlloHCT) recipients. We conducted a retrospective multicenter study aiming to analyze the risk factors associated with antibiotic resistance and impact of BSI on transplant related mortality (TRM) in children following alloHCT. During the study period from 2004 to 2014, 395 children (mean age 9.4 years) with at least one BSI were included. The incidences of resistant gram-negative rods (GNR) were 20...
January 16, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28104391/na-h-exchanger-mediated-hydrogen-ion-extrusion-as-a-carcinogenic-signal-in-triple-negative-breast-cancer-etiopathogenesis-and-prospects-for-its-inhibition-in-therapeutics
#16
REVIEW
Schammim Ray Amith, Larry Fliegel
Breast cancer is the leading cause of cancer-related death in women in Europe and North America, and metastasis is the primary cause of fatality in patients with breast cancer. While some breast cancers are quite treatable, the triple-negative breast cancers are more metastatic and resistant to chemotherapy. There is clearly an urgent need for better treatments for this form of the disease. Breast cancer is characterized by genetically complex intra-tumour heterogeneity, particularly within the triple-negative clinical subtype...
January 16, 2017: Seminars in Cancer Biology
https://www.readbyqxmd.com/read/28104295/systematic-drug-sensitivity-testing-reveals-synergistic-growth-inhibition-by-dasatinib-or-mtor-inhibitors-with-paclitaxel-in-ovarian-granulosa-cell-tumor-cells
#17
Ulla-Maija Haltia, Noora Andersson, Bhagwan Yadav, Anniina Färkkilä, Evgeny Kulesskiy, Matti Kankainen, Jing Tang, Ralf Bützow, Annika Riska, Arto Leminen, Markku Heikinheimo, Olli Kallioniemi, Leila Unkila-Kallio, Krister Wennerberg, Tero Aittokallio, Mikko Anttonen
OBJECTIVE: Resistance to standard chemotherapy poses a major clinical problem in the treatment of ovarian cancer patients. Adult-type granulosa cell tumor (AGCT) is a unique ovarian cancer subtype for which efficient treatment options are lacking in advanced disease. To this end, systematic drug response and transcriptomics profiling were performed to uncover new therapy options for AGCTs. METHODS: The responses of three primary and four recurrent AGCTs to 230 anticancer compounds were screened in vitro using a systematic drug sensitivity and resistance testing (DSRT) platform, coupled with mRNA sequencing...
January 16, 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/28104287/enhanced-terminal-room-disinfection-and-acquisition-and-infection-caused-by-multidrug-resistant-organisms-and-clostridium-difficile-the-benefits-of-enhanced-terminal-room-disinfection-study-a-cluster-randomised-multicentre-crossover-study
#18
Deverick J Anderson, Luke F Chen, David J Weber, Rebekah W Moehring, Sarah S Lewis, Patricia F Triplett, Michael Blocker, Paul Becherer, J Conrad Schwab, Lauren P Knelson, Yuliya Lokhnygina, William A Rutala, Hajime Kanamori, Maria F Gergen, Daniel J Sexton
BACKGROUND: Patients admitted to hospital can acquire multidrug-resistant organisms and Clostridium difficile from inadequately disinfected environmental surfaces. We determined the effect of three enhanced strategies for terminal room disinfection (disinfection of a room between occupying patients) on acquisition and infection due to meticillin-resistant Staphylococcus aureus, vancomycin-resistant enterococci, C difficile, and multidrug-resistant Acinetobacter. METHODS: We did a pragmatic, cluster-randomised, crossover trial at nine hospitals in the southeastern USA...
January 16, 2017: Lancet
https://www.readbyqxmd.com/read/28103623/metabolic-inflexibility-with-obesity-and-the-effects-of-fenofibrate-on-skeletal-muscle-fatty-acid-oxidation
#19
Kristen E Boyle, Jacob E Friedman, Rachel C Janssen, Chantal Underkofler, Joseph A Houmard, Neda Rasouli
This study was designed to investigate mechanisms of lipid metabolic inflexibility in human obesity and the ability of fenofibrate (FENO) to increase skeletal muscle fatty acid oxidation (FAO) in primary human skeletal muscle cell cultures (HSkMC) exhibiting metabolic inflexibility. HSkMC from 10 lean and 10 obese, insulin resistant subjects were treated with excess fatty acid for 24 h (24hFA) to gauge lipid-related metabolic flexibility. Metabolically inflexible HSkMC from obese individuals were then treated with 24hFA in combination with FENO to determine effectiveness for increasing FAO...
January 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/28103585/long-non-coding-rnas-in-osteosarcoma
#20
REVIEW
Ruiling Chen, Gangyang Wang, Ying Zheng, Yingqi Hua, Zhengdong Cai
Long non-coding RNAs (lncRNAs) with more than 200 nuleotides, have been explored to participate in various cancer types including osteosarcoma (OS), which is the most common kind of primary bone tumors with high morbidity in infants and adolescents. These oncogenic or tumor suppressive lncRNAs regulate OS pathogenesis, such as cell growth, proliferation, invasion, migration, metastasis and cell apoptosis, serve as independent prognostic biomarkers or play a significant role in multidrug resistance (MDR) in OS cells...
January 18, 2017: Oncotarget
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