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https://www.readbyqxmd.com/read/28222524/a-combination-of-resveratrol-and-curcumin-is-effective-against-aluminum-chloride-induced-neuroinflammation-in-rats
#1
Amira Zaky, Ahmad Bassiouny, Mahitab Farghaly, Bassma M El-Sabaa
BACKGROUND: Experimental studies have demonstrated that aluminum is an environmental toxin that induces neuroinflammation and the development of Alzheimer's disease. OBJECTIVE: In this report, we investigated the beneficial effect of a combination of resveratrol and curcumin to reduce aluminum-induced neuroinflammation. METHOD: We employed both an in vivo model of aluminum-induced neuroinflammation and an in vitro aluminum stimulated cultured PC-12 cells...
February 7, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28222511/evaluation-of-a-dna-a%C3%AE-42-vaccine-in-aged-nzw-rabbits-antibody-kinetics-and-immune-profile-after-intradermal-immunization-with-full-length-dna-a%C3%AE-42-trimer
#2
Doris Lambracht-Washington, Min Fu, Mary Wight-Carter, Matthew Riegel, Roger N Rosenberg
A pathological hallmark of Alzheimer's disease (AD) are amyloid plaques in the brain consisting of aggregated amyloid-β 42 peptide (Aβ42) derived from cellular amyloid-β protein precursor (AβPP). Based on successful experiments in mouse AD models, active immunization with Aβ42 peptide and passive immunizations with anti-Aβ42 antibodies were started in clinical trials. Active Aβ42 peptide immunization in humans had led to an inflammatory autoimmune response, and the trial was stopped. Passive immunizations had shown some effects in slowing AD pathology...
February 7, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28222440/sumo-1-gene-silencing-inhibits-proliferation-and-promotes-apoptosis-of-human-gastric-cancer-sgc-7901-cells
#3
Lifang Jin, Kexin Shen, Tong Chen, Wei Yu, Huaiyu Zhang
BACKGROUND: It has been reported that blocking small ubiquitin-like modifier (SUMO) conjugation by silencing SUMO gene remarkably decreased tumor growth in vivo. However, few studies have examined the relationship between SUMO gene silencing and gastric cancer (GC). The study aims to explore the effects of SUMO-1 gene silencing on GC cell proliferation and apoptosis. METHODS: GC cells were cultured and divided into 5 groups: the blank group (without any transfection or treatment), the empty vector group (transfected with empty vector), the shRNA-SUMO-1-1 group (transfected with shRNA-SUMO-1-1 plasmid), the shRNA-SUMO-1-2 group (transfected with shRNA-SUMO-1-2 plasmid), and the shRNA-SUMO-1-3 group (transfected with shRNA-SUMO-1-3 plasmid)...
February 21, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28222387/baicalein-enhances-the-osteogenic-differentiation-of-human-periodontal-ligament-cells-by-activating-the-wnt-%C3%AE-catenin-signaling-pathway
#4
Li-Jiao Chen, Bi-Bo Hu, Xin-Lian Shi, Man-Man Ren, Wen-Bin Yu, Sheng-Dan Cen, Rong-Dang Hu, Hui Deng
OBJECTIVE: Periodontium regeneration is one of the most important processes for periodontitis therapy. Human periodontal ligament cells (hPDLCs) play a vital role in the repair and regeneration of periodontal tissues. Our study aimed to investigated the mechanisms underlying the promotion of hPLDCs osteogenic differentiation by baicalein. DESIGN: hPDLCs were obtained from periodontal ligament (PDL) tissues by primary culture. The MTT assay was used to determine the growth curves of hPDLCs treated with different concentrations of baicalein (1...
February 7, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28222255/stemness-signature-of-equine-marrow-derived-mesenchymal-stem-cells
#5
Morteza Zahedi, Abbas Parham, Hesam Dehghani, Hossein Kazemi Mehrjerdi
Background: Application of competent cells such as mesenchymal stem cells (MSCs) for treatment of musculoskeletal disorders in equine athletes is increasingly needed. Moreover, similarities of horse and human in size, load and types of joint injuries, make horse as a good model for MSCs therapy studies. This study was designed to isolate and characterize stemness signature of equine bone marrow-derived mesenchymal stem cells (BM-MSCs). Methods: BM of three mares was aspirated and the mononuclear cells (MNCs) were isolated using density gradient...
February 28, 2017: International Journal of Stem Cells
https://www.readbyqxmd.com/read/28222169/decellularized-wharton-s-jelly-from-human-umbilical-cord-as-a-novel-3d-scaffolding-material-for-tissue-engineering-applications
#6
Sushma Jadalannagari, Gabriel Converse, Christopher McFall, Eric Buse, Michael Filla, Maria T Villar, Antonio Artigues, Adam J Mellot, Jinxi Wang, Michael S Detamore, Richard A Hopkins, Omar S Aljitawi
In tissue engineering, an ideal scaffold attracts and supports cells thus providing them with the necessary mechanical support and architecture as they reconstruct new tissue in vitro and in vivo. This manuscript details a novel matrix derived from decellularized Wharton's jelly (WJ) obtained from human umbilical cord for use as a scaffold for tissue engineering application. This decellularized Wharton's jelly matrix (DWJM) contained 0.66 ± 0.12 μg/mg sulfated glycosaminoglycans (GAGs), and was abundant in hyaluronic acid, and completely devoid of cells...
2017: PloS One
https://www.readbyqxmd.com/read/28222109/ppd-induced-monocyte-mitochondrial-damage-is-associated-with-a-protective-effect-to-develop-tuberculosis-in-bcg-vaccinated-individuals-a-cohort-study
#7
Diana Marín, Nancy Marín, Helena Del Corral, Lucelly López, María Elena Ramirez-Agudelo, Carlos A Rojas, María P Arbeláez, Luis F García, Mauricio Rojas
INTRODUCTION: The mechanisms of mononuclear phagocyte death have been associated with the permissiveness and resistance to mycobacterial replication, but it remains unknown whether or not they help predict the risk of developing TB. OBJECTIVE: To describe the factors associated with the induction of monocyte mitochondrial and membrane damage in response to PPD as well as determine if this type of damage might predict the susceptibility of developing active tuberculosis in a cohort of household contacts (HHCs) from Medellin, Colombia from 2005 to 2008...
2017: PloS One
https://www.readbyqxmd.com/read/28222108/oxidative-stress-mediated-nf%C3%AE%C2%BAb-phosphorylation-upregulates-p62-sqstm1-and-promotes-retinal-pigmented-epithelial-cell-survival-through-increased-autophagy
#8
Chunjuan Song, Sayak K Mitter, Xiaoping Qi, Eleni Beli, Haripriya V Rao, Jindong Ding, Colin S Ip, Hongmei Gu, Debra Akin, William A Dunn, Catherine Bowes Rickman, Alfred S Lewin, Maria B Grant, Michael E Boulton
p62 is a scaffolding adaptor implicated in the clearance of protein aggregates by autophagy. Reactive oxygen species (ROS) can either stimulate or inhibit NFκB-mediated gene expression influencing cellular fate. We studied the effect of hydrogen peroxide (H2O2)-mediated oxidative stress and NFκB signaling on p62 expression in the retinal pigment epithelium (RPE) and investigated its role in regulation of autophagy and RPE survival against oxidative damage. Cultured human RPE cell line ARPE-19 and primary human adult and fetal RPE cells were exposed to H2O2-induced oxidative stress...
2017: PloS One
https://www.readbyqxmd.com/read/28222044/endocrine-system-on-chip-for-a-diabetes-treatment-model
#9
Dao Thi Thuy Nguyen, Danny van Noort, In-Kyung Jeong, Sungsu Park
The endocrine system is a collection of glands producing hormones which, among others, regulates metabolism, growth and development. One important group of endocrine diseases is diabetes, which is caused by a deficiency or diminished effectiveness of endogenous insulin. By using a microfluidic perfused 3D cell-culture chip, we developed an 'endocrine system on chip' to potentially be able to screen drugs for the treatment of diabetes by measuring insulin release over time. Insulin-secreting β-cells are located in the pancreas, while L-cells, located in the small intestines, stimulate insulin secretion...
February 21, 2017: Biofabrication
https://www.readbyqxmd.com/read/28222027/vitamin-d-modulates-the-expression-of-hla-dr-and-cd38-after-in-vitro-activation-of-t-cells
#10
Simon Villegas-Ospina, Wbeimar Aguilar-Jimenez, Sandra M Gonzalez, María T Rugeles
OBJECTIVE: Vitamin D (VitD) is an anti-inflammatory hormone; however, some evidence shows that VitD may induce the expression of activation markers, such as CD38 and HLA-DR. We explored its effect on the expression of these markers on CD4+ and CD8+ T-cells in vitro, and their potential correlations in vivo. MATERIALS AND METHODS: CD38 and HLA-DR expression was measured by flow cytometry in PHA/IL-2-activated mononuclear cells cultured under VitD precursors: three cholecalciferol (10-11M, 10-9M, 10-7M; n=11) and two calcidiol (40 ng/mL, 80 ng/mL; n=9) concentrations...
February 21, 2017: Hormone Molecular Biology and Clinical Investigation
https://www.readbyqxmd.com/read/28221986/induction-of-viable-but-nonculturable-salmonella-in-exponentially-grown-cells-by-exposure-to-a-low-humidity-environment-and-their-resuscitation-by-catalase
#11
Yuta Morishige, Atsushi Koike, Ai Tamura-Ueyama, Fumio Amano
Salmonella is a major cause of foodborne disease that sometimes occurs in massive outbreaks around the world. This pathogen is tolerant of low-humidity conditions. We previously described a method for induction of viable but nonculturable (VBNC) Salmonella enterica serovar Enteritidis by treatment with hydrogen peroxide (H2O2) and subsequent resuscitation with 0.3 mM sodium pyruvate. Here, we report a new method for the induction of the VBNC state in Salmonella Enteritidis cells, one involving dehydration. Exposure of Salmonella Enteritidis cells to dehydration stress under poor nutritional conditions (0...
February 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28221973/a-bioprocessed-polysaccharide-from-lentinus-edodes-mycelia-cultures-with-turmeric-protects-chicks-from-a-lethal-challenge-of-salmonella-gallinarum
#12
Dalmuri Han, Hyung Tae Lee, June Bong Lee, Yongbaek Kim, Sang Jong Lee, Jang Won Yoon
Our previous studies demonstrated that a bioprocessed polysaccharide (BPP) isolated from Lentinus edodes mushroom mycelia cultures supplemented with black rice bran can protect mice against Salmonella lipopolysaccharide-induced endotoxemia and reduce the mortality from Salmonella Typhimurium infection through upregulated T-helper 1 immunity. Here, we report that a BPP from L. edodes mushroom mycelia liquid cultures supplemented with turmeric (referred to as BPP-turmeric) alters chicken macrophage responses against avian-adapted Salmonella Gallinarum and protects chicks against a lethal challenge from Salmonella Gallinarum...
February 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28221914/effects-of-inoculation-procedures-on-variability-and-repeatability-of-salmonella-thermal-resistance-in-wheat-flour
#13
Ian M Hildebrandt, Bradley P Marks, Elliot T Ryser, Rossana Villa-Rojas, Juming Tang, Francisco J Garces-Vega, Sarah E Buchholz
Limited prior research has shown that inoculation methods affect thermal resistance of Salmonella in low-moisture foods; however, these effects and their repeatability have not been systematically quantified. Consequently, method variability across studies limits utility of individual data sets and cross-study comparisons. Therefore, the objective was to evaluate the effects of inoculation methodologies on stability and thermal resistance of Salmonella in a low-moisture food (wheat flour), and the repeatability of those results, based on data generated by two independent laboratories...
November 2016: Journal of Food Protection
https://www.readbyqxmd.com/read/28221885/antibacterial-and-antiadhesive-activities-of-extracts-from-edible-plants-against-soft-drink-spoilage-by-asaia-spp
#14
Hubert Antolak, Agata Czyzowska, Dorota Kregiel
This study was conducted to investigate the antibacterial and antiadhesive activities of ethanol extracts from five edible plant parts: cinnamon bark ( Cinnamomum zeylanicum ), licorice root ( Glycyrrhiza radix ), nettle leaves ( Urtica dioica ), green tea leaves ( Camellia sinensis ), and elderberry flowers ( Sambucus nigra ). The chemical constituents of the extracts were identified using high-performance liquid chromatography and liquid chromatography plus mass spectrometry. Six strains of Asaia lannensis and Asaia bogorensis bacteria isolated from spoiled commercial fruit-flavored noncarbonated mineral water were used...
January 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28221876/effect-of-magnesium-acetate-on-the-antimold-activity-of-lactobacillus
#15
Katarzyna Kycia, Anna Bzducha-Wróbel, Karolina Kraśniewska, Anna Chlebowska-Śmigiel, Małgorzata Gniewosz
The antimold activity of lactic acid bacteria (LAB) is used in food biopreservation. The aim of this study was to evaluate the effect of magnesium acetate added to de Man Rogosa Sharpe (MRS) medium on the antimold activity of three LAB strains ( Lactobacillus plantarum , Lactobacillus brevis , and Lactobacillus fermentum ) against molds contaminating food ( Aspergillus oryzae , Aspergillus niger , Penicillium chrysogenum , Fusarium avenaceum , and Rhizopus arrhizus ) and their ability to produce organic acids (acetic acid, lactic acid, and phenyllactic acid)...
January 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28221856/enumeration-and-identification-of-coliform-bacteria-injured-by-chlorine-or-fungicide-mixed-with-agricultural-water
#16
Hidemi Izumi, Yuji Nakata, Ayano Inoue
Chemical sanitizers may induce no injury (bacteria survive), sublethal injury (bacteria are injured), or lethal injury (bacteria die). The proportion of coliform bacteria that were injured sublethally by chlorine and fungicide mixed with agricultural water (pond water), which was used to dilute the pesticide solution, was evaluated using the thin agar layer (TAL) method. In pure cultures of Enterobacter cloacae , Escherichia coli , and E. coli O157:H7 (representing a human pathogen), the percentage of chlorine-injured cells was 69 to 77% for dilute electrolyzed water containing an available chlorine level of 2 ppm...
October 2016: Journal of Food Protection
https://www.readbyqxmd.com/read/28221720/imaging-cell-matrix-interactions-in-3d-collagen-hydrogel-culture-systems
#17
Aaron R Short, Catherine Czeisler, Benjamin Stocker, Sara Cole, José Javier Otero, Jessica O Winter
3D hydrogels better replicate in vivo conditions, and yield different results from 2D substrates. However, imaging interactions between cells and the hydrogel microenvironment is challenging because of light diffraction and poor focal depth. Here, cryosectioning and vibrating microtomy methods and fixation protocols are compared. Collagen I/III hydrogel sections (20-100 µm) are fixed with paraformaldehyde (2%-4%) and structurally evaluated. Cryosectioning damaged hydrogels, and vibrating microtomy (100 µm, 2%) yielded the best preservation of microstructure and cell integrity...
February 21, 2017: Macromolecular Bioscience
https://www.readbyqxmd.com/read/28221713/reconfigurable-microscale-frameworks-from-concatenated-helices-with-controlled-chirality
#18
Seog-Jin Jeon, Ryan C Hayward
The utility of helical structures in driving motion of microorganisms and plants has inspired efforts to develop synthetic stimuli-responsive helical architectures for self-motile and shape-morphing systems. While several approaches to responsive helices based on hydrogels and liquid crystalline polymers have been reported, they have so far been limited to macroscopic (cm scale) dimensions, and have not been applied to concatenated helices with more than two segments. Here, a robust method for microfabrication of helices inspired by Bauhinia seedpods, based on trilayer samples consisting of rigid plastic stripes sandwiching a swellable temperature-responsive hydrogel, is reported and the formation of responsive shape-controlled frameworks from concatenated multiple helices (multihelices) with controlled chirality is demonstrated...
February 21, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28221700/multikinase-inhibitors-sorafenib-and-sunitinib-as-radiosensitizers-in-head-and-neck-cancer-cell-lines
#19
Annette Affolter, Gerson Samosny, Anne-Sophie Heimes, Johanna Schneider, Wilko Weichert, Albrecht Stenzinger, Katharina Sommer, Alexandra Jensen, Arnulf Mayer, Walburgis Brenner, Wolf J Mann, Jürgen Brieger
BACKGROUND: Radioresistance is a common feature of head and neck squamous cell carcinoma (HNSCC). We previously showed that the irradiation- activated vascular endothelial growth factor (VEGF)-extracellular signal-regulated kinase (ERK)-axis is fundamental for the survival of resistant tumors. In this study, we examined if treatment with potent multikinase (MK) inhibitors, sorafenib and sunitinib, could radiosensitize tumor cells. METHODS: Cultured HNSCC cell lines were treated with inhibitors and subsequently irradiated...
February 21, 2017: Head & Neck
https://www.readbyqxmd.com/read/28221101/identification-of-a-novel-epitope-in-the-c-terminus-of-hcv-e2-protein-that-induces-potent-and-cross-reactive-neutralizing-antibodies
#20
Soma Das, Ranajoy Mullick, Anuj Kumar, Himani Tandon, Mihika Bose, K Gouthamchandra, Madhavi Chandra, Bagepally Ravishankar, M N Khaja, Narayanaswamy Srinivasan, Saumitra Das, Shaila Melkote Subbarao, Anjali Anoop Karande
Hepatitis C virus (HCV) is a leading cause of chronic viral hepatitis, but an effective vaccine is still not available to prevent infection. Use of neutralizing antibodies could be a potential therapeutic option. In this study, presence of anti-HCV antibodies in HCV-infected patients' was assessed from 50 patients and examined for the presence of neutralizing antibodies using the 'hepatitis C virus like particles'. Antibodies from two samples exhibited significant inhibitory activity suggesting that these may neutralize viral infection...
February 3, 2017: Journal of General Virology
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