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https://www.readbyqxmd.com/read/28646720/nanoporous-gold-based-microbial-biosensor-for-direct-determination-of-sulfide
#1
Zhuang Liu, Hanyue Ma, Huihui Sun, Rui Gao, Honglei Liu, Xia Wang, Ping Xu, Luying Xun
Environmental pollution caused by sulfide compounds has become a major problem for public health. Hence, there is an urgent need to explore a sensitive, selective, and simple sulfide detection method for environmental monitoring and protection. Here, a novel microbial biosensor was developed using recombinant Escherichia coli BL21 (E. coli BL21) expressing sulfide:quinone oxidoreductase (SQR) for sulfide detection. As an important enzyme involved in the initial step of sulfide metabolism, SQR oxidizes sulfides to polysulfides and transfers electrons to the electron transport chain...
June 20, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28645263/microbiota-dependent-metabolite-and-cardiovascular-disease-marker-trimethylamine-n-oxide-tmao-is-associated-with-monocyte-activation-but-not-platelet-function-in-untreated-hiv-infection
#2
Judith M Haissman, Anna K Haugaard, Sisse R Ostrowski, Rolf K Berge, Johannes R Hov, Marius Trøseid, Susanne D Nielsen
BACKGROUND: HIV infection is associated with increased risk of cardiovascular disease beyond that explained by traditional risk factors. Altered gut microbiota, microbial translocation, and immune activation have been proposed as potential triggers. The microbiota-dependent metabolite trimethylamine-N-oxide (TMAO) predicts myocardial infarction (MI) in the general population and has recently been shown to induce platelet hyperreactivity. In the present study, we investigated if TMAO was associated with platelet function, microbial translocation, and immune activation in both untreated and combination anti-retroviral therapy (cART) HIV infection...
June 23, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28643380/microscopy-visualisation-confirms-multi-species-biofilms-are-ubiquitous-in-diabetic-foot-ulcers
#3
Khalid Johani, Matthew Malone, Slade Jensen, Iain Gosbell, Hugh Dickson, Honhua Hu, Karen Vickery
Increasing evidence within the literature has identified the presence of biofilms in chronic wounds and proposed that they contribute to delayed wound healing. This research aimed to investigate the presence of biofilm in diabetic foot ulcers (DFUs) using microscopy and molecular approaches and define if these are predominantly mono- or multi-species. Secondary objectives were to correlate wound observations against microscopy results in ascertaining if clinical cues are useful in detecting wound biofilm. DFU tissue specimens were obtained from 65 subjects...
June 23, 2017: International Wound Journal
https://www.readbyqxmd.com/read/28643026/predictive-model-of-urinary-tract-infection-after-surgical-treatment-for-women-with-endometrial-cancer
#4
Hiroko Machida, Marianne S Hom, Anastasiya Shabalova, Brendan H Grubbs, Koji Matsuo
PURPOSE: The aim of the study was to identify risk factors associated with postoperative urinary tract infections (UTIs) following hysterectomy-based surgical staging in women with endometrial cancer. METHODS: This is a retrospective study utilizing an institutional database (2008-2016) of stage I-IV endometrial cancer cases that underwent hysterectomy-based surgery. UTIs occurring within a 30-day time period after surgery were examined and correlated to patient clinico-pathological demographics...
June 22, 2017: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/28642550/cytokines-regulate-complement-receptor-immunoglobulin-expression-and-phagocytosis-of-candida-albicans-in-human-macrophages-a-control-point-in-anti-microbial-immunity
#5
Usma Munawara, Annabelle G Small, Alex Quach, Nick N Gorgani, Catherine A Abbott, Antonio Ferrante
Complement Receptor Immunoglobulin (CRIg), selectively expressed by macrophages, plays an important role in innate immunity by promoting phagocytosis of bacteria. Thus modulation of CRIg on macrophages by cytokines can be an important mechanism by which cytokines regulate anti-microbial immunity. The effects of the cytokines, tumor necrosis factor, transforming growth factor-β1, interferon-γ, interleukin (IL)-4, IL-13, IL-10, IL-1β, IL-6, lymphotoxin-α, macrophage-colony stimulating factor (M-CSF) and GM-CSF on CRIg expression were examined in human macrophages...
June 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28642128/immunomodulation-of-parkinson-s-disease-using-mucuna-pruriens-mp
#6
REVIEW
Sachchida Nand Rai, Hareram Birla, Walia Zahra, Saumitra Sen Singh, Surya Pratap Singh
Immune control is associated with nigrostriatal neuroprotection for Parkinson's disease (PD); though its direct cause and effect relationships have not yet been realized and modulating the immune system for therapeutic gain has been openly discussed. While the pathobiology of PD remains in study, neuroinflammation is thought to speed nigrostriatal degeneration. The neuroinflammatory cascade associated with PD begins with aggregation of misfolded or post-translationally modified α-synuclein (α-syn). Such aggregation results in neuronal cell death and the presence of chronically activated glia (microglia and astroglia), leading to the production of proinflammatory cytokines like tumor necrosis factor alpha (TNF-α), interleukin-1 beta (IL-1β), IL-6, and enzymes such as nicotinamide adenine dinucleotide phosphate (NADPH) oxidase and cyclooxygenase-2 (COX-2)...
June 19, 2017: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/28642073/synthesis-of-biogenic-ag-pd-core-shell-nanoparticles-having-anti-cancer-anti-microbial-functions
#7
Wafa I Abdel-Fattah, M M Eid, Sh I Abd El-Moez, E Mohamed, Ghareib W Ali
Biogenic Ag@Pd core-shell nanoparticles were greenly synthesized within two plant extracts aiming at enhanced anticancer/bactericidal functions. These functions were verified for the two Pd@Ag biogenic core-shell nanoparticles (BCSnp) with constant Pd to several Ag contents. BCSnp were synthesized within two extracts of Almond nuts and Black Berry fruits, four samples each, through simple, low cost and echo friendly microwave route. The BCSnp Surface Plasmon Resonance (SPR) was detected via UV/visible spectrophotometer...
June 19, 2017: Life Sciences
https://www.readbyqxmd.com/read/28641892/fighting-fake-medicines-first-quality-evaluation-of-cardiac-drugs-in-africa
#8
Marie Antignac, Bara Ibrahima Diop, Diane Macquart de Terline, Melisande Bernard, Bernard Do, Stéphane Méo Ikama, Roland N'Guetta, Dadhi M Balde, Yessoufou Tchabi, Abdallahi Sidi Aly, Ibrahim Ali Toure, Patrick Zabsonre, Jean Marie F Damorou, Jean Laurent Takombe, Christine Fernandez, Muriel Tafflet, Jean Philippe Empana, Pierre François Plouin, Kumar Narayanan, Eloi Marijon, Xavier Jouven
BACKGROUND: The growing menace of poor quality and falsified drugs constitutes a major hazard, compromising healthcare and patient outcomes. Efforts to assess drug standards worldwide have almost exclusively focused on anti-microbial drugs; with no study to date on cardiovascular drugs. Our study aims to assess quality of seven routinely used cardiovascular medications (anticoagulants, antihypertensives and statins) in ten Sub-Saharan African countries. METHODS: Drugs were prospectively collected using standardized methods between 2012 and 2014 from licensed (random pharmacies) and unlicensed (street-markets) places of sale in Africa...
June 19, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28640897/impact-of-selected-non-steroidal-anti-inflammatory-pharmaceuticals-on-microbial-community-assembly-and-activity-in-sequencing-batch-reactors
#9
Cong Jiang, Jinju Geng, Haidong Hu, Haijun Ma, Xingsheng Gao, Hongqiang Ren
This study covers three widely detected non-steroidal anti-inflammatory pharmaceuticals (NSAIDs), diclofenac (DCF), ibuprofen (IBP) and naproxen (NPX), as NSAIDs pollutants. The objective is to evaluate the impact of NSAIDs at their environmental concentrations on microbial community assembly and activity. The exposure experiments were conducted under three conditions (5 μg L-1 DCF, 5 μg L-1 DCF+5 μg L-1 IBP and 5 μg L-1 DCF+5 μg L-1 IBP+ 5 μg L-1 NPX) in sequencing batch reactors (SBRs) for 130 days...
2017: PloS One
https://www.readbyqxmd.com/read/28638559/comparative-evaluation-of-anti-microbial-effects-of-triple-antibiotic-paste-and-amox-and-its-derivatives-against-e-faecalis-an-in-vitro-study
#10
Manjeet Kaur, Shrikant Kendre, Parmod Gupta, Navneet Singh, Harsimran Sethi, Neha Gupta, Rushil Acharya
BACKGROUND: Enterococcus faecalis is a microorganism commonly detected in asymptomatic, persistent endodontic infections. Triple antibiotic paste has stood the test of time as a proven antibiotic combination against E. Faecalis. However, problems with this include staining of teeth and standardization of the preparation. Thus, the search for better alternatives and better preparation techniques is still on. AIM: To observe the potential of combinations [(Amoxicillin+ Metronidazole, Amoxicillin Clavulanic Acid + Metronidazole; Amoxicillin and Cloxacillin + Metronidazole)] over Triple Antibiotic Paste...
June 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28637804/bioactive-immune-components-of-anti-diarrheagenic-enterotoxigenic-e-coli-etec-hyperimmune-bovine-colostrum-products
#11
Khandra T Sears, Sharon M Tennant, Mardi K Reymann, Raphael Simon, Nicky Konstantopoulos, William C Blackwelder, Eileen M Barry, Marcela F Pasetti
Diarrhea is a common illness among travelers to resource-limited countries, the most prevalent attributable agent being enterotoxigenic Escherichia coli (ETEC). There are presently no vaccines licensed specifically for the prevention of ETEC-induced traveler's diarrhea (TD), and this has propelled investigation of alternative preventive methods. Colostrum, the first milk expressed after birthing, is rich in immunoglobulins and innate immune components for protection of newborns against infectious agents. Hyperimmune bovine colostrum (HBC) produced by immunization of cows during gestation (and containing high levels of specific antibodies) is a practical and effective prophylactic tool against gastrointestinal illnesses...
June 21, 2017: Clinical and Vaccine Immunology: CVI
https://www.readbyqxmd.com/read/28636560/lipocalin-2-regulates-intestine-bacterial-survival-by-interplaying-with-siderophore-in-a-weaned-piglet-model-of-escherichia-coli-infection
#12
Bing-Xiu Guo, Qian-Qian Wang, Jia-Hui Li, Zhen-Shun Gan, Xiao-Feng Zhang, Yi-Zhen Wang, Hua-Hua Du
Iron is an essential nutrient that facilitates cell proliferation and growth, which plays a pivotal role in modulating the battle for survival between mammalian hosts and their pathogens. Pathogenic bacteria secrete siderophores to acquire iron from the host. However, lipocalin 2 (Lcn2), a siderophore-binding antimicrobial protein, binds to siderophores to prevent bacterial uptake of iron, which is critical for the control of systemic infection with Escherichia coli (E. coli). But few studies focus on the anti-infective response of Lcn2 in the intestines by inhibiting bacterial proliferation based on microbial iron metabolism...
June 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28635280/anti-adhesive-activity-and-metabolomics-analysis-of-rat-urine-after-cranberry-vaccinium-macrocarpon-aiton-administration
#13
Gregorio Peron, Pellizzaro Anna, Brun Paola, Elisabetta Schievano, Stefano Mammi, Stefania Sut, Ignazio Castagliuolo, Stefano Dall'Acqua
Cranberry (Vaccinium macrocarpon Aiton) is used to treat non-complicated urinary tract infections (UTIs). A-type procyanidins (PAC-A) are considered the active constituents being able to inhibit bacterial adhesion to the urinary epithelium. However, there are doubts about PAC-A role in UTIs, due to their poor bioavailability, extensive metabolism, limited knowledge about urinary excretion and contradictory clinical trials. The effects of 35 days cranberry (11 mg/kg PAC-A, 4 mg/kg PAC-B) supplementation were studied in healthy rats using a UPLC-MS-based metabolomics approach...
June 21, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28633932/%C3%AE-2-adrenoreceptor-stimulation-dampens-the-lps-induced-m1-polarization-in-pig-macrophages
#14
Elodie Bacou, Karine Haurogné, Marie Allard, Grégoire Mignot, Jean-Marie Bach, Julie Hervé, Blandine Lieubeau
The cross-talk between sympatho-adreno-medullar axis and innate immunity players was mainly studied in rodents. In intensive husbandry, pigs are exposed to multiple stressors inducing repeated releases of catecholamines that bind to adrenoreceptors (AR) on target cells. Among adrenoreceptors, the β2-AR is largely expressed by immune cells including macrophages. We report herein on the effects of catecholamines, through β2-AR stimulation, on pig macrophage functions activated by LPS. β2-AR stimulation of porcine macrophages prevented the LPS-induced increase in TNFα and IL-8 secretion while increasing IL-10 secretion...
June 17, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/28629745/exposure-to-non-microbial-n-glycolylneuraminic-acid-protects-farmers-children-against-airway-inflammation-and-colitis
#15
Remo Frei, Ruth Ferstl, Caroline Roduit, Mario Ziegler Dipl-Ing, Elisa Schiavi, Weronika Barcik, Noelia Rodriguez-Perez, Oliver F Wirz, Marcin Wawrzyniak, Benoit Pugin, Dirk Nehrbass, Marek Jutel, Sylwia Smolinska, Patrycja Konieczna, Christian Bieli, Susanne Loeliger, Marco Waser, Göran Pershagen, Josef Riedler, Martin Depner, Bianca Schaub, Jon Genuneit, Harald Renz, Juha Pekkanen, Anne M Karvonen, Jean-Charles Dalphin, Marianne van Hage, Gert Doekes, Mübeccel Akdis, Charlotte Braun-Fahrländer, Cezmi A Akdis, Erika von Mutius, Liam O'Mahony, Roger P Lauener
BACKGROUND: Childhood exposure to a farm environment has been shown to protect against the development of inflammatory diseases such as allergy, asthma, and inflammatory bowel disease. OBJECTIVE: We sought to investigate whether besides exposure to microbes also exposure to structures of non-microbial origin such as the sialic acid N-Glycolylneuraminic acid (Neu5Gc) may play a significant role. METHODS: Exposure to Neu5Gc was evaluated by quantifying anti-Neu5Gc antibody levels in the sera of children enrolled in two farm studies: the PARSIFAL study (n=299) and the PASTURE birth cohort (cord blood (n=836), 1 year (n=734), 4...
June 16, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28629723/microbial-antioxidant-defense-enzymes
#16
REVIEW
Cindy Staerck, Amandine Gastebois, Patrick Vandeputte, Alphonse Calenda, Gérald Larcher, Louiza Gillmann, Nicolas Papon, Jean-Philippe Bouchara, Maxime J J Fleury
Free radicals are often described as chemical compounds characterized by unpaired electrons in their outer orbital rendering them highly reactive species. In mammalians, studies on free radicals were focused on reactive oxygen species (ROS) or reactive nitrogen species (RNS) due to their relative importance in physiological as well as in pathological processes. These cellular compounds are produced by different physiological systems such as the aerobic metabolism and play a major role in cell signaling pathways but also in the host immune defenses against pathogenic microorganisms...
June 16, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28628926/synthesis-characterisation-molecular-docking-anti-microbial-and-anti-diabetic-screening-of-substituted-4-indolylphenyl-6-arylpyrimidine-2-imine-derivatives
#17
Veerasamy Ramya, Santhirakasu Vembu, Ganesan Ariharasivakumar, Manathusamy Gopalakrishnan
The purpose of the research is to synthesise a novel series of (E)-2-(4-(1H-indol-3-yl)-6-p-substituted phenylpyrimidin-2-yl)dimethylguanidine derivatives since 3-(1H-indol-3-yl)-1-p-substituted phenylprop-2-en-1-one and evaluate their molecular docking studies, antimicrobial, and anti-diabetic activities. Among all the synthesized compounds (11a-g), compound 11a exhibits excellent CDOCKER energy (-11.36 kcal/mol). The entire compounds (11a-g) confirm very good antimicrobial activity towards the tested microorganisms...
June 19, 2017: Drug Research
https://www.readbyqxmd.com/read/28627277/anti-acne-drugs-in-phase-1-and-2-clinical-trials
#18
Christos C Zouboulis, Clio Dessinioti, Fragkiski Tsatsou, Harald P M Gollnick
Despite the impressive increase of knowledge on acne etiology accumulated during the last 20 years, few efforts have been overtaken to introduce new therapeutic regiments targeting the ideal treatment of acne. The increasing emergence of microbial resistance associated with antibiotics, teratogenicity, particularly associated with systemic isotretinoin, and the need for an adverse drug profile, which can be tolerated by the patient, make the need of new pathogenesis relevant anti-acne agents an emerging issue...
June 19, 2017: Expert Opinion on Investigational Drugs
https://www.readbyqxmd.com/read/28621561/a-patent-review-of-two-fruitful-decades-1997-2016-of-isocoumarin-research
#19
Hidayat Hussain, Ivan R Green
Isocoumarins comprise a six-membered oxygen heterocycle (α-pyranone) along with one aromatic ring and are known to possess interesting biological properties. During the last two decade (1997-2016), isocoumarin chemistry has attracted attention due to its biological and pharmaceutical effects viz., anticancer, anti-diabetic, antibacterial, antimalarial, and fungicidal effects. Areas covered: This review covers the patents on the therapeutic activities of natural and synthetic isocoumarins over the last two decades (1997-2016)...
June 16, 2017: Expert Opinion on Therapeutic Patents
https://www.readbyqxmd.com/read/28621429/the-sumo-targeted-ubiquitin-ligase-dgrn-is-essential-for-drosophila-innate-immunity
#20
Bella Koltun, Eliza Shackelford, François Bonnay, Nicolas Matt, Jean Marc Reichhart, Amir Orian
The ability of metazoans to combat pathogenic infection involves both systemic and local responses to the invading pathogens. Ubiquitin and SUMO pathways molecularly regulate the response to infection, immune signaling and gene expression. Here, we report that Degringolade (Dgrn, CG10981), a SUMO-targeted ubiquitin ligase connecting the two pathways, is essential for the innate immunity response in Drosophila. dgrn(DK) null and heterozygous mutant adult flies are severely immune-compromised and succumb rapidly to both pathogenic bacteria and fungi infections...
2017: International Journal of Developmental Biology
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