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https://www.readbyqxmd.com/read/28808878/role-of-intestinal-microbiome-in-american-ginseng-mediated-colon-cancer-protection-in-high-fat-diet-fed-aom-dss-mice
#1
C-Z Wang, W-H Huang, C-F Zhang, J-Y Wan, Y Wang, C Yu, S Williams, T-C He, W Du, M W Musch, E B Chang, C-S Yuan
OBJECTIVE: Chronic intestinal inflammation is a risk factor for colorectal cancer (CRC) initiation and development. Diets that are rich in Western style fats have been shown to promote CRC. This study was conducted to investigate the role of intestinal microbiome in American ginseng-mediated CRC chemoprevention in a mouse model. The population and diversity of enteric microbiome were evaluated after the ginseng treatment. METHODS: Using an azoxymethane (AOM)/dextran sulfate sodium (DSS)-induced gut inflammation and tumorigenesis mouse model, the effects of oral American ginseng on high fat diet-associated enteric pathology were determined...
August 14, 2017: Clinical & Translational Oncology
https://www.readbyqxmd.com/read/28808375/chemopreventive-and-antioxidant-effect-of-polyphenol-free-spirulina-maxima-and-its-hydrolyzed-protein-content-investigation-on-azoxymethane-treated-mice
#2
Nikte Y Martínez-Palma, Gloria Dávila-Ortiz, Cristian Jiménez-Martínez, Eduardo Madrigal-Bujaidar, Isela Álvarez-González
BACKGROUND: Spirulina maxima (Sm) is known to have nutritive value as well as a number of potentially useful biomedical properties. OBJECTIVES: The initial purpose of this report was to evaluate the inhibitory effect of the alga (without its polyphenol content), on the induction of azoxymethane (AOM)-induced colon aberrant crypts (AC) in mouse. Besides, we hydrolyzed the protein content of such mixture. Our second aim was to determine the inhibitory potential of this last plant mixture on the AOM-induced colon AC in mouse...
July 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28802367/impact-of-pneumococcal-conjugate-vaccines-on-otitis-media-a-review-of-measurement-and-interpretation-challenges
#3
REVIEW
Ivo Vojtek, Marcus Nordgren, Bernard Hoet
Acute otitis media (AOM) is among the most frequent childhood diseases and is caused by various bacterial and viral etiological agents. In this article, we provide an overview of published studies assessing the impact of higher-valent pneumococcal conjugate vaccines (PCVs) on AOM. In some instances, reports of PCV impact on complications of AOM have been included. While randomized controlled trials (RCTs) allow for the most precise assessment of vaccine efficacy against AOM, observational studies provide answers to questions regarding the public health value of these vaccines in real-life settings...
September 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28800083/effect-of-angelica-sinensis-root-extract-on-cancer-prevention-in-different-stages-of-an-aom-dss-mouse-model
#4
Bochen Zhao, Qian Kang, Yu Peng, Yuanping Xie, Cheng Chen, Bingshao Li, Qing Wu
Angelica sinensis root (ASR) extract was obtained to investigate its effects on colorectal carcinogenesis in different stages of an Azoxymethane/Dextran sodium sulphate (AOM/DSS) model. In this study, we showed that ASR extract administration in the initial stage of the AOM/DSS model had cancer preventive effects with decreasing tumor incidence and a high-grade of intraepithelial neoplasia incidence. With respect to DNA damage, the amounts of 8-oxoguanine and γ-H2AX were suppressed in colon tissue. The balance of apoptosis and proliferation was approaching the normal state...
August 11, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28795969/e-cadherin-mediates-the-preventive-effect-of-vitamin-d3-in-colitis-associated-carcinogenesis
#5
Yu Xin, Longmei He, Zijian Luan, Hong Lv, Hong Yang, Ying Zhou, Xinhua Zhao, Weixun Zhou, Songlin Yu, Bei Tan, Hongying Wang, Jiaming Qian
Vitamin D3 is beneficial in ameliorating or preventing inflammation and carcinogenesis. Here, we evaluated if vitamin D3 has a preventive effect on colitis-associated carcinogenesis. Administration of azoxymethane (AOM), followed with dextran sulfate sodium (DSS), was used to simulate colitis-associated colon cancer in mice. The supplement of vitamin D3 at different dosages (15, 30, 60 IU·g·w), started before AOM or immediately after DSS treatment (post 60), was sustained to the end of the experiment. Dietary vitamin D3 significantly reduced the number of tumors and tumor burden in a dose-dependent manner...
August 8, 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28793296/older-age-at-multiple-sclerosis-onset-is-an-independent-factor-of-poor-prognosis-a-population-based-cohort-study
#6
Francis Guillemin, Cédric Baumann, Jonathan Epstein, Philippe Kerschen, Teresa Garot, Guillaume Mathey, Marc Debouverie
BACKGROUND: Late-onset multiple sclerosis (LOMS) frequently features a primary progressive (PP) course, strongly predicting severe disability. In this population-based cohort, we estimated the prognostic role of age at multiple sclerosis (MS) onset, independent of PP course, on disability progression. METHODS: The association of age at disease onset (adult, <50 years [AOMS], vs. late, ≥50 years [LOMS]) and time to Expanded Disability Status Scale (EDSS) score 4 and 6 was estimated by Cox regression modelling...
August 10, 2017: Neuroepidemiology
https://www.readbyqxmd.com/read/28790141/prognostic-factors-for-treatment-failure-in-acute-otitis-media
#7
Paula A Tähtinen, Miia K Laine, Aino Ruohola
BACKGROUND AND OBJECTIVES: Antimicrobial treatment is effective in the management of acute otitis media (AOM), but approximately half of the children may recover without antimicrobial agents. By identifying patients who may not require antimicrobial treatment for the management of AOM, the use of antimicrobial agents could be substantially reduced. Our aim was to identify subgroups of children with AOM who would benefit most from antimicrobial treatment and children who could be suitable for initial observation...
August 8, 2017: Pediatrics
https://www.readbyqxmd.com/read/28764500/note-a-four-pass-acousto-optic-modulator-system-for-laser-cooling-of-sodium-atoms
#8
Bo Lu, Dajun Wang
We present a four-pass acousto-optic modulator (AOM) system for providing the repumping light for laser cooling of sodium atoms. With only one 400 MHz AOM, we achieve a tunable laser frequency shift around 1.6 GHz with total efficiency up to 30%. This setup provides an alternative over conventional methods to generate a sodium repumping light using more expensive high frequency AOMs or electro-optical modulators (EOMs) in the GHz domain. This compact and reliable setup can be easily adapted to other frequencies and may find applications in laser spectroscopy, laser cooling and trapping, and coherent manipulation of atomic quantum states...
July 2017: Review of Scientific Instruments
https://www.readbyqxmd.com/read/28764189/comparison-of-efficacy-and-safety-of-cefpodoxime-and-amoxicillin-clavulanate-potassium-in-paediatric-acute-otitis-media-in-children-below-two-years-a-prospective-longitudinal-study
#9
Arijit Ghosh, Sayan Chatterjee
INTRODUCTION: Acute Otitis Media (AOM) is one of the frequently diagnosed diseases in children below two years. Amoxicillin-clavulanate potassium is the first line drug in treatment of Paediatric AOM (PAOM). Cefpodoxime has good antimicrobial activity against various types of microorganisms that include causative microorganisms of PAOM. AIM: To compare the efficacy and safety of cefpodoxime and amoxicillin-clavulanate potassium for the treatment of PAOM in children below two years...
June 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28763425/frequency-of-acute-otitis-media-in-children-under-24-months-of-age-before-and-after-the-introduction-of-the-10-valent-pneumococcal-conjugate-vaccine-into-the-national-immunization-program-in-chile
#10
Andrés Rosenblut, Macarena Rosenblut, Karen García, Ximena Maul
BACKGROUND: Streptococcus pneumoniae is the leading cause of acute otitis media (AOM). Pneumococcal non-typable Haemophilus influenzae Protein D Conjugate Vaccine (PCV-10) was introduced to the Chilean national immunization program (NIP) in 2011. The aim of this study was to estimate the frequency of AOM in children < 24 months of age attending the Emergency Department (ED) of Hospital Sótero del Río (HSR) 4 years before and 4 years after the introduction of PCV-10 in the Chilean NIP...
July 31, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28755833/serum-antibody-response-to-moraxella-catarrhalis-proteins-in-stringently-defined-otitis-prone-children
#11
Dabin Ren, Anthony L Almudevar, Timothy F Murphy, Eric R Lafontaine, Anthony A Campagnari, Nicole Luke-Marshall, Michael E Pichichero
BACKGROUND: Moraxella catarrhalis (Mcat) is a frequent pathogen of acute otitis media (AOM) in young children. Here we prospectively assessed naturally-induced serum antibodies to four Mcat vaccine candidate proteins in stringently defined otitis prone (sOP) and non-otitis prone (NOP) children age 6-36months old following nasopharyngeal (NP) colonization, at onset of AOM and convalescence from AOM. METHODS: Serum IgG and IgM antibody against recombinant Mcat proteins, oligopeptide permease A (OppA), outer membrane protein (OMP) CD, hemagglutinin (Hag), and PilA clade 2 (PilA2), were quantitated by ELISA...
July 26, 2017: Vaccine
https://www.readbyqxmd.com/read/28745498/curcumin-and-salsalate-suppresses-colonic-inflammation-and-procarcinogenic-signaling-in-high-fat-fed-azoxymethane-treated-mice
#12
Xian Wu, Anna C Pfalzer, Gar Yee Koh, Sanyuan Tang, Jimmy W Crott, Michael J Thomas, Mohsen Meydani, Joel B Mason
High-fat diets (HFDs) and excess adiposity increase proinflammatory cytokines in the colon, altering gene expression in a manner that promotes the development of colorectal cancer (CRC). Thus, compounds that reduce this biochemical inflammation are potential chemopreventive agents. Curcumin (CUR), a dietary polyphenol, and salsalate (SAL), a non-steroidal anti-inflammatory drug, are both anti-inflammatories. We investigated the inhibitory effects of CUR with or without SAL on inflammatory cytokines and procarcinogenic signaling in azoxymethane (AOM)-treated A/J mice...
August 11, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28744216/nuclear-magnetic-resonance-based-metabolomics-approach-to-evaluate-the-prevention-effect-of-camellia-nitidissima-chi-on-colitis-associated-carcinogenesis
#13
Ming-Hui Li, Hong-Zhi Du, Gui-Ju Kong, Li-Bao Liu, Xin-Xin Li, Sen-Sen Lin, Ai-Qun Jia, Sheng-Tao Yuan, Li Sun, Jun-Song Wang
Colorectal cancer (CRC) is one of the most common malignant tumors worldwide, occurring in the colon or rectum portion of large intestine. With marked antioxidant, anti-inflammation and anti-tumor activities, Camellia nitidissima Chi has been used as an effective treatment of cancer. The azoxymethane/dextran sodium sulfate (AOM/DSS) induced CRC mice model was established and the prevention effect of C. nitidissima Chi extracts on the evolving of CRC was evaluated by examination of neoplastic lesions, histopathological inspection, serum biochemistry analysis, combined with nuclear magnetic resonance (NMR)-based metabolomics and correlation network analysis...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28739823/interleukin-17a-aggravates-middle-ear-injury-induced-by-streptococcus-pneumoniae-through-p38-mapk-signaling-pathway
#14
Wei Wang, Wenbin Liu, Jiali Liu, Zimeng Wang, Fangmei Fan, Yurong Ma, Chunfang Jin, Yun Xiang, Yifei Huang, Xuemei Zhang, Wenchun Xu, Yibing Yin, Yujuan He
Acute otitis media (AOM) is one of the most common bacterial infection diseases in children aged 2-7 yr worldwide. We previously demonstrated that interleukin (IL)-17A promotes an acute inflammatory response characterized by the influx of neutrophils into the middle ear cavity during Streptococcus pneumoniae (Spn)-induced AOM. Generally, inflammatory response is viewed as an effector that frequently causes local tissue damage. However, little is known about the pathogenic effects of IL-17A in AOM. Here, we investigated the pathogenic effects of IL-17A by using wild-type (WT) and IL-17A knockout (KO) mouse models...
July 24, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28736993/molecular-characterization-of-streptococcus-pneumoniae-particularly-serotype19a-st320-that-emerged-in-krasnoyarsk-russia
#15
Irina N Protasova, Tsai-Wen Wan, Natalya V Bakhareva, Wei-Chun Hung, Wataru Higuchi, Yasuhisa Iwao, Tatyana A Yelistratova, Natalya A Ilyenkova, Yelena S Sokolovskaya, Galina P Martynova, Ivan V Reva, Galina V Reva, Sergey V Sidorenko, Lee-Jene Teng, Olga V Peryanova, Alla B Salmina, Tatsuo Yamamoto
Streptococcus pneumoniae, a common human pathogen, colonizes the nasopharynx and causes diseases including acute otitis media (AOM). We herein report pneumococcal serotype distributions in children before and after PCV7 vaccination and in patients with pneumococcal disease in Siberian Russia (Krasnoyarsk). Analyses included antimicrobial susceptibility testing, ST typing, a pulsed-field gel electrophoresis analysis, virulence-related surface protein gene (VSG) typing with novel primers, and a structural analysis by scanning electron microscopy...
July 23, 2017: Microbiology and Immunology
https://www.readbyqxmd.com/read/28731334/optical-spectra-and-magnetic-behavior-of-a-wide-range-of-europium-iii-oxo-compounds-analysis-of-the-ligand-field-effects
#16
Anna Bronova, Nils Kannengießer, Robert Glaum
The europium-oxygen interaction in nine different europium(III) oxo-compounds (including C-type Eu2O3) was investigated on the basis of powder reflectance spectra (near-IR/vis/UV) and temperature-dependent magnetic measurements. Computation of the transition energies and of the effective Bohr magneton numbers for Eu(3+) in the different ligand fields were performed within the framework of the angular overlap model (AOM) using the computer program BonnMag. These calculations show that all electronic transition energies in the optical spectra, the magnetic susceptibilities as well as their temperature dependence, are very well-accounted for by AOM...
August 7, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28725183/bile-acid-mediated-sphingosine-1-phosphate-receptor-2-signaling-promotes-neuroinflammation-during-hepatic-encephalopathy-in-mice
#17
Matthew McMillin, Gabriel Frampton, Stephanie Grant, Shamyal Khan, Juan Diocares, Anca Petrescu, Amy Wyatt, Jessica Kain, Brandi Jefferson, Sharon DeMorrow
Hepatic encephalopathy (HE) is a neuropsychiatric complication that occurs due to deteriorating hepatic function and this syndrome influences patient quality of life, clinical management strategies and survival. During acute liver failure, circulating bile acids increase due to a disruption of the enterohepatic circulation. We previously identified that bile acid-mediated signaling occurs in the brain during HE and contributes to cognitive impairment. However, the influences of bile acids and their downstream signaling pathways on HE-induced neuroinflammation have not been assessed...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28711947/repression-of-intestinal-transporters-and-fxr-fgf15-signaling-explains-bile-acids-dysregulation-in-experimental-colitis-associated-colon-cancer
#18
Lijuan Cao, Yuan Che, Tuo Meng, Shanshan Deng, Jun Zhang, Min Zhao, Wanfeng Xu, Dandan Wang, Zhichen Pu, Guangji Wang, Haiping Hao
Bile acids (BAs) are important endogenous signaling molecules that play vital roles in the pathological development of various diseases including colitis-associated cancer (CAC). BAs were previously found dysregulated under conditions of CAC; however, the exact patterns and underlying molecular mechanisms remain largely elusive. Based on the development of a method for comprehensive analysis of BAs, this study aims to elucidate the dysregulation patterns and involved mechanisms in a typical CAC model induced by azoxymethane (AOM)/dextran sodium sulfate (DSS)...
June 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28708872/nasopharyngeal-microbiota-in-infants-and-changes-during-viral-upper-respiratory-tract-infection-and-acute-otitis-media
#19
Tasnee Chonmaitree, Kristofer Jennings, Georgiy Golovko, Kamil Khanipov, Maria Pimenova, Janak A Patel, David P McCormick, Michael J Loeffelholz, Yuriy Fofanov
BACKGROUND: Interferences between pathogenic bacteria and specific commensals are known. We determined the interactions between nasopharyngeal microbial pathogens and commensals during viral upper respiratory tract infection (URI) and acute otitis media (AOM) in infants. METHODS: We analyzed 971 specimens collected monthly and during URI and AOM episodes from 139 infants. The 16S rRNA V4 gene regions were sequenced on the Illumina MiSeq platform. RESULTS: Among the high abundant genus-level nasopharyngeal microbiota were Moraxella, Haemophilus, and Streptococcus (3 otopathogen genera), Corynebacterium, Dolosigranulum, Staphylococcus, Acinetobacter, Pseudomonas, and Bifidobacterium...
2017: PloS One
https://www.readbyqxmd.com/read/28708410/ab-initio-ligand-field-theory-analysis-and-covalency-trends-in-actinide-and-lanthanide-free-ions-and-octahedral-complexes
#20
Julie Jung, Mihail Atanasov, Frank Neese
Actinide chemistry is gaining increased focus in modern research, particularly in the fields of energy research and molecular magnetism. However, the structure-function and structure-property relationships of actinides have still not been studied as intensely as those for transition metals. In this work, we report a detailed ab initio study of the spectroscopic, magnetic, and bonding properties of the trivalent actinide free ions and their associated hexachloride complexes in octahedral symmetry. The electronic structures of these systems are examined using complete active-space self-consistent-field calculations followed by second-order N-electron valence perturbation theory, including both scalar relativistic and spin-orbit-coupling effects...
August 7, 2017: Inorganic Chemistry
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