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https://www.readbyqxmd.com/read/28923322/cycloartane-type-triterpene-glycosides-anopanins-a-c-with-monoacyldigalactosylglycerols-from-anodendron-paniculatum
#1
Viet Duc Ho, Thi Nhu Hanh Hoang, Quoc Hung Vo, Van Kiem Phan, Tuan Anh Le, Viet Ty Pham, Minh Hien Nguyen, Takeshi Kodama, Takuya Ito, Hiroyuki Morita, Ain Raal, Thi Hoai Nguyen
Three cycloartane-type triterpene glycosides (anopanins A-C), together with three known monoacyldigalactosylglycerols gingerglycolipids A-C and (2S)-1-O-palmitoyl-3-O-[α-d-galactopyranosyl-(1→6)-β-d-galactopyranosyl]-sn-glycerol, were isolated from the aerial parts of Anodendron paniculatum collected in Viet Nam. The chemical structures of the present compounds were elucidated by means of 1D and 2D NMR and HRESIMS spectroscopy, and by comparing to the reported data in the literature. These compounds did not show significant growth inhibitory activities (IC50 > 100 μg/mL) against the tested cancer cell lines LU-1 (lung adenocarcinoma), KB (epidermoid carcinoma), Hep-G2 (hepatoma cancer), MKN-7 (stomach cancer), and SW-480 (colon adenocarcinoma)...
September 15, 2017: Phytochemistry
https://www.readbyqxmd.com/read/28922801/effect-of-severe-weather-events-on-the-shedding-of-shiga-toxigenic-escherichia-coli-in-slaughter-cattle-and-phenotype-of-serogroup-o157-isolates
#2
Kim Stanford, Tim Reuter, Susan J Bach, Linda Chui, Angela Ma, Cheyenne C Conrad, Renata Tostes, Tim A McAllister
High-event periods (HEPs) occur sporadically when beef carcasses and meat have episodes of acute contamination with Shiga toxin-producing Escherichia coli (STEC). In this study, severe weather events were investigated as catalysts for HEPs based on PCR and isolate prevalence of seven E. coli serogroups in slaughter cattle feces. Winter ambient temperatures with daily means 10.5oC warmer or 12.3°C colder than seasonal norms (-10.4°C) most altered STEC shedding. Fecal samples yielded increased proportions (P < 0...
September 1, 2017: FEMS Microbiology Ecology
https://www.readbyqxmd.com/read/28919906/screening-for-natural-inhibitors-of-topoisomerases-i-from-rhamnus-davurica-by-affinity-ultrafiltration-and-high-performance-liquid-chromatography-mass-spectrometry
#3
Guilin Chen, Mingquan Guo
Topoisomerase I (Topo I) catalyzes topological interconversion of duplex DNA during DNA replication and transcription, and has been deemed as important antineoplastic targets. In this study, the fraction R.d-60 from ethyl acetate extracts of Rhamnus davurica showed higher inhibitory rates against SGC-7901 and HT-29 compared with the R.d-30 fraction in vitro. However, the specific active components of R.d-60 fraction remain elusive. To this end, a method based on bio-affinity ultrafiltration and high performance liquid chromatography/electrospray mass spectrometry (HPLC- ESI-MS/MS) was developed to rapidly screen and identify the Topo I inhibitors in this fraction...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28916905/small-cholangiolocellular-carcinoma-that-was-difficult-to-distinguish-from-cholangiocellular-carcinoma-a-case-report
#4
Norihiro Ishii, Kenichiro Araki, Takahiro Yamanaka, Tadashi Handa, Mariko Tsukagoshi, Takamichi Igarashi, Akira Watanabe, Norio Kubo, Shinichi Aishima, Hiroyuki Kuwano, Ken Shirabe
BACKGROUND: Cholangiolocellular carcinoma (CoCC) is thought to be derived from hepatic progenitor cells. Because of its origin, CoCC has diverse clinicopathological and imaging findings. Here, we report a case of small CoCC that was difficult to diagnose preoperatively. CASE PRESENTATION: A 62-year-old woman was confirmed with a small liver nodule in the left lobe 2 years after a sustained virological response of hepatitis C virus. The size of the nodule was 11...
September 15, 2017: Surgical Case Reports
https://www.readbyqxmd.com/read/28915576/hepatic-b-cell-leukemia-3-suppresses-chemically-induced-hepatocarcinogenesis-in-mice-through-altered-mapk-and-nf-%C3%AE%C2%BAb-activation
#5
Nadine Gehrke, Marcus A Wörns, Amrit Mann, Yvonne Huber, Nadine Hoevelmeyer, Thomas Longerich, Ari Waisman, Peter R Galle, Jörn M Schattenberg
The transcriptional nuclear factor kappa B (NF-κB)-coactivator B cell leukemia-3 (Bcl-3) is a molecular regulator of cell death and proliferation. Bcl-3 has been shown to be widely expressed in different cancer types including hepatocellular carcinoma (HCC). Its influence on hepatocarcinogenesis is still undetermined. To examine the role of Bcl-3 in hepatocarcinogenesis mice with hepatocyte-specific overexpression of Bcl-3 (Bcl-3(Hep)) were exposed to diethylnitrosamine (DEN) and phenobarbital (PB). Hepatic Bcl-3 overexpression attenuated DEN/PB-induced hepatocarcinogenesis...
August 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28911146/anemia-in-patients-with-resistance-to-thyroid-hormone-%C3%AE-a-role-for-thyroid-hormone-receptor-%C3%AE-in-human-erythropoiesis
#6
Anja L M van Gucht, Marcel E Meima, Carla Moran, Maura Agostini, Anna Tylki-Szymanska, Malgorzata-Walasek Krajewska, Krystyna Chrzanowska, Alexandra Efthymiadou, Dionisios Chrysis, Korcan Demir, W Edward Visser, Theo J Visser, Krishna Chatterjee, Thamar B van Dijk, Robin P Peeters
Context: Patients with resistance to thyroid hormone (TH) α (RTHα) are characterized by growth retardation, macrocephaly, constipation, and abnormal thyroid function tests. In addition, almost all RTHα patients have mild anemia, the pathogenesis of which is unknown. Animal studies suggest an important role for TH and TH receptor (TR)α in erythropoiesis. Objective: To investigate whether a defect in TRα affects the maturation of red blood cells in RTHα patients...
September 1, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28910078/bifacial-biomimetic-freestanding-anisotropic-catechol-interfaces-with-asymmetrically-layered-films-as-versatile-extracellular-matrix-substitutes
#7
Byung Gee Im, Minjae Do, Yoojin Kim, Mira Cho, Jae-Hyung Jang
Biological naïve extracellular matrices (ECMs) exhibit anisotropic functions in their physical, chemical, and morphological properties. Representative examples include anisotropic skin layers or blood vessels simultaneously facing multiphasic environments. Here, anisotropically multifunctional structures called BiFACIAL (biomimetic freestanding anisotropic catechol-interfaces with asymmetrically layered) films were developed simply by contacting two polysaccharide solutions of heparin-catechol (Hep-C) and chitosan-catechol (Chi-C)...
September 14, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28902678/brief-report-high-need-to-switch-cart-or-comedication-with-the-initiation-of-daas-in-elderly-hiv-hcv-coinfected-patients
#8
Elise J Smolders, Colette Smit, Clara T M M de Kanter, Anton S M Dofferiiof, Joop E Arends, Kees Brinkman, Bart Rijnders, Marc van der Valk, Peter Reiss, David M Burger
BACKGROUND: To describe the use of nonantiretroviral comedication and combination antiretroviral therapy (cART) in patients coinfected with HIV/hepatitis C virus (HCV) and to predict the potential for drug-drug interactions (DDIs) with direct-acting antivirals (DAAs) against HCV. METHODS: This is a retrospective, cross-sectional study, using the Dutch, nationwide ATHENA observational HIV cohort database. All patients with a known HIV/HCV coinfection on January 1, 2015, were included...
October 1, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28902357/expression-of-wnt3a-in-hepatocellular-carcinoma-and-its-effects-on-cell-cycle-and-metastasis
#9
Caijie Lu, Yifeng He, Juan Duan, Yongguang Yang, Chunqiang Zhong, Jian Zhang, Weiguo Liao, Xiaojie Huang, Runzhi Zhu, Mingyi Li
Invasion and metastasis are the primary causes of mortality from hepatocellular carcinoma (HCC). Effective inhibition against participants in the tumourigenesis and metastasis process is critical for treatment of HCC. Wnt3a is involved in the development and metastasis of many malignant tumours. However, the specific mechanisms of Wnt3a-mediated cell proliferation, invasion and metastasis in HCC remain unclear. In this study, we found that Wnt3a and its target gene c‑Myc showed higher expression in tumour tissues than normal liver tissues in HCC patients; 71...
October 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28888159/reduction-of-liver-tumerogenic-effect-of-n-nitrosodiethylamine-by-treatment-with-%C3%A9-oryzanol-in-balb-c-mice
#10
Shital S Panchal, Somsuvra B Ghatak, Abhishek B Jha, Raoul Onattu
In recent years, naturally occurring phytochemicals with antioxidant capacity have generated surmount interest in their therapeutic usage against a wide range of pathological and toxicological conditions. The present study was designed to evaluate potential of ɣ-oryzanol (OZ), a bio-active natural antioxidant against hepatocellular carcinoma effect of the carcinogen N-nitrosodiethylamine in Balb/c mice. OZ inhibited the proliferation of Hep-3B cell line in concentration dependent manner. Administration of OZ to N-nitrosodiethylamine induced Balb/c mice for 16 and 32 weeks showed reduction in levels of liver injury markers, restored the levels of liver tumor markers, suppressed the hepatic nodular incidence and multiplicity, and favorably modulated the liver antioxidant status in a time dependent manner...
August 11, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/28869683/runx1c-regulates-hematopoietic-differentiation-of-human-pluripotent-stem-cells-possibly-in-cooperation-with-pro-inflammatory-signaling
#11
Oscar Navarro-Montero, Veronica Ayllon, Mar Lamolda, Lourdes López-Onieva, Rosa Montes, Clara Bueno, Elizabeth Ng, Xiomara Guerrero-Carreno, Tamara Romero, Damià Romero-Moya, Ed Stanley, Andrew Elefanty, Verónica Ramos-Mejia, Pablo Menendez, Pedro J Real
Runx1 is a master hematopoietic transcription factor essential for hematopoietic stem cell (HSC) emergence. Runx1-deficient mice die during early embryogenesis due to the inability to establish definitive hematopoiesis. Here we have used hPSCs as model to study the role of RUNX1 in human embryonic hematopoiesis. Although the three RUNX1 isoforms a, b and c were induced in CD45+ hematopoietic cells, RUNX1c was the only isoform induced in hemato-endothelial progenitors (HEPs)/hemogenic endothelium. Constitutive expression of RUNX1c in hESCs enhanced the appearance of HEPs, including hemogenic (CD43+) HEPs and promoted subsequent differentiation into blood cells...
September 4, 2017: Stem Cells
https://www.readbyqxmd.com/read/28845110/prioritization-for-interferon-free-regimens-and-potential-drug-interactions-of-current-direct-acting-anti-hepatitis-c-agents-in-routine-clinical-practice
#12
Μargarita Papatheodoridi, George N Dalekos, John Goulis, Spilios Manolakopoulos, Christos Triantos, Kalliopi Zachou, Argyro Koukoufiki, Αnastasia Κourikou, Κonstantinos Ζisimopoulos, Christos Τsoulas, George V Papatheodoridis
BACKGROUND: We determined the proportions of patients with chronic hepatitis C (CHC) in association with possible prioritized indications for interferon-free regimens and the use of co-medications with potential drug-drug interactions (DDIs). METHODS: Five hundred consecutive mono-infected CHC patients seen in 2015 at 5 Greek centers were included. Priorities for interferon-free regimens were based on liver disease severity, contraindication(s) for interferon and prior interferon-treatment failure...
2017: Annals of Gastroenterology: Quarterly Publication of the Hellenic Society of Gastroenterology
https://www.readbyqxmd.com/read/28834900/composite-hepatocellular-carcinoma-and-small-cell-carcinoma-with-early-nodal-metastasis-a-case-report
#13
Yu-Jen Liu, Kwai-Fong Ng, Shih-Chiang Huang, Ren-Chin Wu, Tse-Ching Chen
RATIONALE: Hepatocellular carcinoma (HCC) is known to grow in a mosaic pattern, and it can sometimes be combined with non-hepatocellular cells. Despites the variety of combination, HCC with a significant neuroendocrine carcinoma (NEC) component remains very rare. Most of the reported cases were treated as conventional HCC with a relatively poor prognosis. Early diagnosis may lead to a better treatment modality. Here, we report a case of composite HCC and small cell carcinoma (SCC) with nodal metastasis of the SCC component alone...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28825791/facile-access-to-amides-from-oxygenated-or-unsaturated-organic-compounds-by-metal-oxide-nanocatalysts-derived-from-single-source-molecular-precursors
#14
Akbar Mohammad, Prakash Chandra, Topi Ghosh, Mauro Carraro, Shaikh M Mobin
Oxidative amidation is a valuable process for the transformation of oxygenated organic compounds to valuable amides. However, the reaction is severely limited by the use of an expensive catalyst and limited substrate scope. To circumvent these limitations, designing a transition-metal-based nanocatalyst via more straightforward and economical methodology with superior catalytic performances with broad substrate scope is desirable. To resolve the aforementioned issues, we report a facile method for the synthesis of nanocatalysts NiO and CuO by the sol-gel-assisted thermal decomposition of complexes [Ni(hep-H)(H2O)4]SO4 (SSMP-1) and [Cu(μ-hep)(BA)]2 (SSMP-2) [hep-H = 2-(2-hydroxylethyl)pyridine; BA = benzoic acid] as single-source molecular precursors (SSMPs) for the oxidative amidation of benzyl alcohol, benzaldehyde, and BA by using N,N-dimethylformamide (DMF) as the solvent and as an amine source, in the presence of tert-butylhydroperoxide (TBHP) as the oxidant, at T = 80 °C...
August 21, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28789962/expression-and-characterization-of-an-enhanced-recombinant-heparinase-i-with-chitin-binding-domain
#15
Shuqin Xu, Meiling Qiu, Xuanyue Zhang, Jinghua Chen
Heparinase I (Hep I) can efficiently depolymerize heparin and heparin sulfate to oligosaccharides or unsaturated disaccharides, which resulted in loss of physiological function such as blood coagulation. In order to realize the immobilization of Hep I on chitin carriers, we cloned Hep I with the chitin binding domain (ChBD) as a chitin-affinity tag, and the Small Ubiquitin-like MOdifier (SUMO) linker as a solvation enhancer in different fusion sequence. DNA and protein gels suggested that 4 kinds of recombinants were successfully constructed and expressed in Escherichia coli (E...
August 5, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28778116/caveolin-1-restricts-group-a-streptococcus-invasion-of-non-phagocytic-host-cells
#16
Jin Yan Lim, Timothy C Barnett, Michele Bastiani, Kerrie-Ann McMahon, Charles Ferguson, Richard I Webb, Robert G Parton, Mark J Walker
Caveolae are composed of two major proteins, caveolin-1 (CAV1) and cavin-1/polymerase transcript factor I (CAVIN1). Here we demonstrate that CAV1 levels modulate invasion of group A Streptococcus (GAS) into non-phagocytic mammalian cells. GAS showed enhanced internalization into CAV1 knockout mouse embryonic fibroblasts (MEFs), and CAV1 knockdown human epithelial HEp-2 cells, whereas over-expression of CAV1 in HEp-2 cells reduced GAS invasion. This effect was not dependent on the expression of the GAS fibronectin binding protein SfbI, which had previously been implicated in caveolae-mediated uptake...
August 4, 2017: Cellular Microbiology
https://www.readbyqxmd.com/read/28770960/expression-of-mir-195-in-laryngeal-squamous-cell-carcinoma-and-its-effect-on-proliferation-and-apoptosis-of-hep-2
#17
Y Shuang, C Li, X Zhou, Y-W Huang, L Zhang
OBJECTIVE: To investigate the expression of miR-195 and its relationship with clinicopathological characteristics in laryngeal squamous cell carcinoma (LSCC), and to explore its effect and possible mechanism on proliferation and apoptosis of Hep-2. PATIENTS AND METHODS: Real-time fluorescence quantitative PCR was used to detect the expression of miR-195 in laryngeal carcinoma tissues and adjacent normal tissues from 98 cases. Dual-luciferase reporter plasmid with Bcl-2 wild type and mutant type 3' untranslated region was created to verify the target of miR-195 by luciferase assay...
July 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28756153/hybrid-pharmacophore-approach-for-bio-relevant-di-imines-based-homobimetallic-complexes-incorporating-functionalized-dicarboxylates-as-co-ligands-synthesis-spectral-and-structural-activity-dependent-biological-insights-in-vitro-dna-and-hsa-binding-antioxidant
#18
Mohammad Shakir, Summaiya Hanif, Md Fazle Alam, Mohd Farhan, Hina Younus
Synthesis of bio-efficient homobimetallic complexes, [Cu2(L(1))2(dipic)](NO3)2.3H2O (1), [Zn2(L(1))2(dipic)](NO3)2.4H2O (2), [Cu2(L(2))2(oxa)](NO3)2.4H2O (3) and [Zn2(L(2))2(oxa)] (NO3)2.5H2O (4) was carried out using Schiff bases [(N(1)E,N(2)E)-N(1),N(2)-bis(5-chlorothiophen-2-ylmethylene)-4-chlorobenzene-1,2-diamine; L(1)] and [(N(1)E,N(2)E)-N(1),N(2)-bis(5-chlorofuran-2-ylmethylene)-4-chlorobenzene-1,2-diamine; L(2)] as main ligands and dicarboxylate moieties of 2,6-pyridine dicarboxylic acid (H2-dipic) and oxalic acid (H2-oxa) as co-ligands, respectively in order to apprehend their structure activity relationships on the basis of pharmacophore hybrid approach...
July 24, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28755871/cyclohexene-fused-1-3-oxazines-with-selective-antibacterial-and-antiparasitic-action-and-low-cytotoxic-effects
#19
Maria R M de Brito, Walter J Peláez, Martín S Faillace, Gardenia C G Militão, Jackson R G S Almeida, Gustavo A Argüello, Zsolt Szakonyi, Ferenc Fülöp, Maria C Salvadori, Fernanda S Teixeira, Rivelilson M Freitas, Pedro L S Pinto, Ana C Mengarda, Marcos P N Silva, Ademar A Da Silva Filho, Josué de Moraes
Oxazine derivatives, a class of heterocyclic compounds, exhibit a variety of biological properties, such as anticonvulsant and antitumor activities. In this study, we evaluated the effect of two cyclohexene-fused 1,3-oxazines (cis‑1-benzyl-N-phenyl-1,4,4a,5,8,8a-hexahydro-3,1-benzoxazin-2-imine (1) and trans‑N-phenyl-1,4,4a,5,8,8a-hexahydro-3,1-benzoxazin-2-imine (2)) in cultures of Bacillus cereus, Enterococcus faecalis, Escherichia coli, Klebsiella pneumoniae, Salmonella enterica, Serratia marcescens, Shigella flexneri and Staphylococcus aureus by the Minimum Inhibitory Concentration (MIC) and Minimum Bactericidal Concentration (MBC)...
October 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/28754534/health-related-quality-of-life-during-trans-arterial-chemoembolization-with-drug-eluting-beads-loaded-with-doxorubicin-debdox-for-unresectable-hepatic-metastases-from-ocular-melanoma
#20
Jack W Rostas, Alda L Tam, Takami Sato, Charles R Scoggins, Kelly M McMasters, Robert C G Martin
BACKGROUND: We have previously reported favorable response and survival rates using drug-eluting beads loaded with doxorubicin (DEBDOX) for unresectable hepatic metastases. This study investigates the quality of life (QoL) impact of DEBDOX for the treatment of unresectable hepatic metastases from melanoma. METHODS: A multi-center, prospective, non-controlled clinical trial was reviewed. QoL was assessed at baseline and after each treatment, and doxorubicin-specific effects were assessed after each treatment...
July 21, 2017: American Journal of Surgery
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