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https://www.readbyqxmd.com/read/28944190/analysis-of-proteomic-differences-between-liquefied-after-cataracts-and-normal-lenses-using-two-dimensional-gel-electrophoresis-and-mass-spectrometry
#1
Jia-Jia Ge, Yu-Sen Huang
AIM: To analyze and identify the proteomic differences between liquefied after-cataracts and normal lenses by means of liquefied chromatography-tandem mass spectrometry (LC-MS/MS). METHODS: Three normal lenses and three liquefied after-cataracts were exposed to depolymerizing reagents to extract the total proteins. Protein concentrations were separated using two-dimensional gel electrophoresis (2-DE). The digitized images obtained with a GS-800 scanner were then analyzed with PDQuest7...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28943950/apigenin-inhibits-growth-and-induces-apoptosis-in-human-cholangiocarcinoma-cells
#2
Pantipa Subhasitanont, Daranee Chokchaichamnankit, Khajeelak Chiablaem, Siriporn Keeratichamroen, Lukana Ngiwsara, N Monique Paricharttanakul, Kriengsak Lirdprapamongkol, Churat Weeraphan, Jisnuson Svasti, Chantragan Srisomsap
A promising nutraceutical, apigenin, was recently revealed to exhibit biological activity in inhibiting several types of cancer. The effects of apigenin on the growth inhibition and apoptosis of the cholangiocarcinoma HuCCA-1 cell line were investigated. Protein alterations subsequent to apigenin treatment were studied using a proteomic approach. The values of 20, 50 and 90% inhibition of cell growth (IC20, IC50 and IC90) were determined by MTT cell viability assay. Apoptotic cell death was detected using two different methods, a flow cytometric analysis (Muse Cell Analyzer) and DNA fragmentation assay...
October 2017: Oncology Letters
https://www.readbyqxmd.com/read/28943387/cytotoxicity-genotoxicity-and-gene-expression-changes-elicited-by-exposure-of-human-hepatic-cells-to-ginkgo-biloba-leaf-extract
#3
Maria Giuseppa Grollino, Giuseppe Raschellà, Eugenia Cordelli, Paola Villani, Marco Pieraccioli, Irene Paximadas, Salvatore Malandrino, Stefano Bonassi, Francesca Pacchierotti
The use of Ginkgo biloba leaf extract as nutraceutical is becoming increasingly common. As a consequence, the definition of a reliable toxicological profile is a priority for its safe utilization. Recently, contrasting data have been reported on the carcinogenic potential of Ginkgo biloba extract in rodent liver. We measured viability, Reactive Oxygen Species (ROS), apoptosis, colony-forming efficiency, genotoxicity by comet assay, and gene expression changes associated with hepato-carcinogenicity in human cells of hepatic origin (HepG2 and THLE-2) treated with different concentrations (0...
September 21, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28943231/active-mechanisms-of-vibration-encoding-and-frequency-filtering-in-central-mechanosensory-neurons
#4
Anthony W Azevedo, Rachel I Wilson
To better understand biophysical mechanisms of mechanosensory processing, we investigated two cell types in the Drosophila brain (A2 and B1 cells) that are postsynaptic to antennal vibration receptors. A2 cells receive excitatory synaptic currents in response to both directions of movement: thus, twice per vibration cycle. The membrane acts as a low-pass filter, so that voltage and spiking mainly track the vibration envelope rather than individual cycles. By contrast, B1 cells are excited by only forward or backward movement, meaning they are sensitive to vibration phase...
September 19, 2017: Neuron
https://www.readbyqxmd.com/read/28942637/anti-aflatoxigenic-and-antimicrobial-activities-of-schiff-bases-of-2-hydroxy-4-methoxybenzaldehyde-cinnamaldehyde-and-similar-aldehydes
#5
Nanishankar V Harohally, Chris Cherita, Praveena Bhatt, Anu Appaiah K A
2-hydroxy-4-methoxybenzaldehyde (HMBA) is a non-toxic phenolic flavour from dietary source Decalipus hamiltonii and Hemidesmus indicus. HMBA is an excellent antimicrobial agent with additional anti-aflatoxigenic potency. On the other hand, cinnamaldehyde from cinnamon is widely employed flavour with significant anti-aflatoxigenic activity. We have attempted the enhancement of anti-aflatoxigenic and antimicrobial properties of HMBA, cinnamaldehyde and similar molecules via Schiff base formation accomplished from condensation reaction with amino sugar (D-glucamine)...
September 24, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28942532/sterigmatocystin-and-aflatoxin-b1-contamination-of-corn-soybean-meal-and-formula-feed-in-japan
#6
Masayo Nomura, Koji Aoyama, Takayuki Ishibashi
Sterigmatocystin (STC) and aflatoxin B1 (AFB1) were analyzed in 246 corn samples, 126 soybean meal samples, and 861 formula feed samples from the Japanese market between April 2010 and March 2015. The detection rate, the highest concentration, and the mean concentration of STC were respectively 14%, 6.4 μg/kg, and 1.2 μg/kg for corn; 14%, 1.1 μg/kg, and 0.63 μg/kg for soybean meal; and 43%, 9.1 μg/kg, and 0.97 μg/kg for formula feed. The detection rate, the highest concentration, and the mean concentration of AFB1 were respectively 46%, 24 μg/kg, and 3...
September 23, 2017: Mycotoxin Research
https://www.readbyqxmd.com/read/28941211/expression-of-p62-in-hepatocellular-carcinoma-involving-hepatitis-b-virus-infection-and-aflatoxin-b1-exposure
#7
Xiao Xiang, Hong-Gui Qin, Xue-Mei You, Yan-Yan Wang, Lu-Nan Qi, Liang Ma, Bang-De Xiang, Jian-Hong Zhong, Le-Qun Li
This study aims to clarify the relationship and mechanism between expression of autophagy-related protein P62 and prognosis of patients with hepatocellular carcinoma (HCC) involving chronic hepatitis B virus (HBV) infection and aflatoxin B1 (AFB1) exposure. HCC patients who underwent resection were divided into three groups: HBV(+)/AFB1(+) (n = 26), HBV(+)/AFB1(-) (n = 68), and HBV(-)/AFB1(-) (n = 14). The groups were compared in terms of mRNA and protein levels of P62, disease-free survival (DFS), and overall survival (OS) and the expression of NRF2, Nqo1, and AKR7A3 in P62 high-expression and low-expression group...
September 21, 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28940899/low-intensity-pulsed-ultrasound-activates-erk1-2-and-pi3k-akt-signalling-pathways-and-promotes-the-proliferation-of-human-amnion-derived-mesenchymal-stem-cells
#8
Li Ling, Tianqin Wei, Lianli He, Yaping Wang, Yan Wang, Xiushan Feng, Wenqian Zhang, Zhengai Xiong
OBJECTIVES: This study was to investigate the effect and mechanism of low-intensity pulsed ultrasound (LIPUS) on the proliferation of human amnion-derived mesenchymal stem cells (hAD-MSCs). METHODS: Human amnion-derived mesenchymal stem cells were isolated from the amnion of term placentas and identified by flow cytometry and differentiation culture. Proliferation of hAD-MSCs was investigated by Cell Counting Kit-8, cell cycle and EdU assays. Western blotting was used to determine the protein expression levels...
September 22, 2017: Cell Proliferation
https://www.readbyqxmd.com/read/28940418/rare-sugars-d-allulose-d-tagatose-and-d-sorbose-differently-modulate-lipid-metabolism-in-rats
#9
Yasuo Nagata, Narumi Mizuta, Akane Kanasaki, Kazunari Tanaka
BACKGROUND: Rare sugars including D-allulose, D-tagatose, and D-sorbose are present in limited quantities in nature; some of these rare sugars are now commercially produced using microbial enzymes. Apart from the anti-obesity and anti-hyperglycemic activities of D-allulose, effects of these sugars on lipid metabolism have not been investigated. Therefore, we aimed to determine if and how D-tagatose and D-sorbose modulate lipid metabolism in rats. After feeding these rare sugars to rats, parameters on lipid metabolism were determined...
September 21, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28939756/efficient-induction-of-ig-gene-hypermutation-in-ex-vivo-activated-primary-b-cells
#10
Jun Liu, Ermeng Xiong, Hanying Zhu, Hiromi Mori, Shoya Yasuda, Kazuo Kinoshita, Takeshi Tsubata, Ji-Yang Wang
Activation-induced cytidine deaminase (AID) initiates both somatic hypermutation (SHM) and class switch recombination (CSR) of Ig genes. How AID is targeted to the Ig V gene and switch region to trigger SHM and CSR remains elusive. Primary B cells stimulated with CD40L plus IL-4 or LPS plus IL-4 undergo efficient CSR, but it has been difficult to induce SHM in these cells. In the current study, we used B cells from B1-8(hi) mice carrying a prerecombined VH186.2DFL16.1JH2 Ab gene to investigate the induction of SHM under in vitro culture conditions...
September 22, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28938899/evaluation-of-lytic-bacteriophages-for-control-of-multidrug-resistant-salmonella-typhimurium
#11
Lae-Seung Jung, Tian Ding, Juhee Ahn
BACKGROUND: The emergence of antibiotic-resistant bacteria can cause serious clinical and public health problems. This study describes the possibility of using bacteriophages as an alternative agent to control multidrug-resistant Salmonella Typhimurium. METHODS: The potential lytic bacteriophages (P22-B1, P22, PBST10, PBST13, PBST32, and PBST 35) were characterized by morphological property, heat and pH stability, optimum multiplicity of infection (MOI), and lytic activity against S...
September 22, 2017: Annals of Clinical Microbiology and Antimicrobials
https://www.readbyqxmd.com/read/28938642/facile-total-synthesis-of-lysicamine-and-the-anticancer-activities-of-the-ru-ii-rh-iii-mn-ii-and-zn-ii-complexes-of-lysicamine
#12
Jiao-Lan Qin, Ting Meng, Zhen-Feng Chen, Xiao-Li Xie, Qi-Pin Qin, Xiao-Ju He, Ke-Bin Huang, Hong Liang
Lysicamine is a natural oxoaporphine alkaloid, which isolated from traditional Chinese medicine (TCM) herbs and has been shown to possess cytotoxicity to hepatocarcinoma cell lines. Reports on its antitumor activity are scarce because lysicamine occurs in plants at a low content. In this work, we demonstrate a facile concise total synthesis of lysicamine from simple raw materials under mild reaction conditions, and the preparation of the Ru(II), Rh(III), Mn(II) and Zn(II) complexes 1-4 of lysicamine (LY). All the compounds were fully characterized by elemental analysis, IR, ESI-MS, (1)H and (13)C NMR, as well as single-crystal X-ray diffraction analysis...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938428/glp-1-receptor-activation-inhibits-palmitate-induced-apoptosis-via-ceramide-in-human-cardiac-progenitor-cells
#13
Anna Leonardini, Rossella D'Oria, Maria Angela Incalza, Cristina Caccioppoli, Valentina Andrulli Buccheri, Angelo Cignarelli, Domenico Paparella, Vito Margari, Annalisa Natalicchio, Sebastio Perrini, Francesco Giorgino, Luigi Laviola
Context: Increased apoptosis of cardiomyocytes and cardiac progenitor cells (CPCs) in response to saturated fatty acids (SFA) can lead to myocardial damage and dysfunction. Ceramides mediate lipotoxicity-induced apoptosis. GLP-1 receptor (GLP1R) agonists exert beneficial effects on cardiac cells in experimental models. Objective: To investigate the protective effects of GLP1R activation on SFA-mediated apoptotic death of human CPCs. Design: Human CPCs were isolated from cardiac appendages of non-diabetic donors and then exposed to palmitate with or without pre-treatment with the GLP1R agonist exendin-4...
August 16, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28937259/cardiac-morphofunctional-characteristics-of-transgenic-rats-with-overexpression-of-the-bradykinin-b1-receptor-in-the-endothelium
#14
R F Levy, A J Serra, E L Antonio, L Dos Santos, D S Bocalini, J B Pesquero, M Bader, V F Merino, H A de Oliveira, E C de Arruda Veiga, J A Silva, P Jf Tucci
Evaluate whether endothelial overexpressing of the bradykinin B1 receptor could be associated with altered left ventricular and myocardial performance. Echocardiography and hemodynamic were employed to assess left ventricular morphology and function in Sprague-Dawley transgenic rats overexpressing the endothelial bradykinin B1 receptor (Tie2B1 rats). The myocardial inotropism was evaluated on papillary muscles contradicting in vitro. In Tie2B1 animals, an enlarged left ventricular cavity and lower fractional shortening coupled with a lower rate of pressure change values indicated depressed left ventricular performance...
September 22, 2017: Physiological Research
https://www.readbyqxmd.com/read/28936872/characterization-of-lipophilized-monomeric-and-oligomeric-grape-seed-flavan-3-ol-derivatives
#15
Mingshun Chen, Shu-Juan Yu
Grape seed proanthocyanidins, compose of flavan-3-ols of different degree of polymerization, are natural food antioxidant. Flavan-3-ols in grape seed are usually polyhydroxy derivatives which exhibiting hydrophilic character. Monomeric and oligomeric flavan-3-ols were modified structurally to improve their lipophilicity, expand their application in lipophilic media, and enhance their cellular absorption in the body. Esterification of the water-soluble flavan-3-ols was prepared by Lipozyme TL IM with lauric acid, and their enhanced lipophilicity was confirmed by 1-octanol/water partition coefficient...
September 22, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28936040/evaluation-and-comparison-of-shear-bond-strength-of-porcelain-to-a-beryllium-free-alloy-of-nickel-chromium-nickel-and-beryllium-free-alloy-of-cobalt-chromium-and-titanium-an-in-vitro-study
#16
Ananya Singh, Keerthi Ramachandra, Achut R Devarhubli
AIMS: The aim of this study was to evaluate and compare the shear bond strength of porcelain to the alloys of nickel-chromium (Ni-Cr), cobalt-chromium (Co-Cr), and titanium. MATERIALS AND METHODS: A total of 40 samples (25 mm × 3 mm × 0.5 mm) were fabricated using smooth casting wax and cast using Ni-Cr, Co-Cr, and titanium alloys followed by porcelain buildup. The samples were divided into four groups with each group containing 10 samples (Group A1-10: sandblasted Ni-Cr alloy, Group B1-10: sandblasted Co-Cr alloy, Group C1-10: nonsandblasted titanium alloy, and Group D1-10: sandblasted titanium alloy)...
July 2017: Journal of Indian Prosthodontic Society
https://www.readbyqxmd.com/read/28935640/attenuation-of-pulmonary-ace2-activity-impairs-inactivation-of-des-arg9-bradykinin-bkb1r-axis-and-facilitates-lps-induced-neutrophil-infiltration
#17
Chhinder P Sodhi, Christine Wohlford-Lenane, Yukihiro Yamaguchi, Thomas Prindle, William B Fulton, Sanxia Wang, Paul B McCray, Mark C Chappell, David J Hackam, Hongpeng Jia
Angiotensin converting enzyme 2 (ACE2) is a terminal carboxypeptidase with important functions in the renin angiotensin system and plays a critical role in inflammatory lung diseases. ACE2 cleaves single terminal residues from several bioactive peptides such as angiotensin II. However, few of its substrates in the respiratory tract have been identified and the mechanism underlying the role of ACE2 in inflammatory lung disease has not been fully characterized. In an effort to identify biological targets of ACE2 in the lung, we tested its effects on des-arg9 bradykinin (DABK) in airway epithelial cells based upon a hypothesis that DABK is a biological substrate of ACE2 in the lung and ACE2 plays an important role in the pathogenesis of acute lung inflammation partly through modulating DABK/BKB1R axis signaling...
September 21, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28935563/oridonin-induces-g2-m-cell-cycle-arrest-and-apoptosis-in-human-oral-squamous-cell-carcinoma
#18
Han Wang, Liping Zhu, Xiaodong Feng, Han Zhang, Qingqiong Luo, Fuxiang Chen
Oridonin, an active diterpeniod isolated from Rabdosia rubescens, has been reported for its anti-tumor activity on several cancers, however, its effect on oral squamous cell carcinoma (OSCC) remains unclear. In this study, we demonstrated for the first time that oridonin inhibited the growth of OSCC cells both in vitro and in vivo. Oridonin decreased the proliferation and clonal formation of cultured OSCC cells in a dose-dependent manner. Further study indicated that oridonin induced G2/M phase arrest in OSCC cells, which was associated with the downregulation of proteins related to G2/M transition including cdc25C, cdc2 and cyclin B1, as well as the upregulation of p53 and phosphorylated-cdc2...
September 18, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28935499/hepatotoxicity-of-fusariotoxins-alone-and-in-combination-towards-the-heparg-human-hepatocyte-cell-line
#19
Marie-Caroline Smith, Nolwenn Hymery, Samuel Troadec, Audrey Pawtowski, Emmanuel Coton, Stéphanie Madec
While the reality of mycotoxin co-occurrence in food commodities is now established, their effects in mixtures are not well studied. The present study investigated the individual and combined effects of deoxynivalenol (DON), nivalenol (NIV), T-2 toxin (T2), fumonisin B1 (FB1), zearalenone (ZEA) and moniliformin (MON) fusariotoxins on cell viability and cell death mechanisms in proliferating HepaRG cells, a human derived liver cell line. In addition, DON-ZEA being one of the most widespread mycotoxin mixtures in grains worldwide, its effect on the expression levels of genes encoding for sets of hepatocyte-specific functions was studied...
September 18, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28935351/impact-of-left-ventricular-assist-device-related-complications-on-posttransplant-graft-survival
#20
Dhaval Chauhan, Alexis K Okoh, Setri Fugar, Rivandra Karanam, David Baran, Mark Zucker, Magarita Camacho, Mark J Russo
BACKGROUND: This study describes the impact of continuous-flow left-ventricular-assist device (CF-LVAD)-related complications on postoperative outcomes. METHODS: The United Network for Organ Sharing (UNOS) heart transplant follow-up data from 2005 to 2015 were obtained. CF-LVAD patients who were bridged to transplant were studied. Device-related complications (DRCs) at patient's last follow-up before transplantation were reported in 5 categories: device thrombosis (B1), infection (B2), device malfunction (B3), life-threatening arrhythmias (B4), and others (B5)...
September 18, 2017: Annals of Thoracic Surgery
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