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Beta d glucan

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https://www.readbyqxmd.com/read/29724391/the-association-between-endotoxin-and-beta-1-%C3%A2-3-d-glucan-in-house-dust-with-asthma-severity-among-schoolchildren
#1
Oluwafemi Oluwole, Donna C Rennie, Ambikaipakan Senthilselvan, Roland Dyck, Anna Afanasieva, Shelley Kirychuk, George Katselis, Joshua A Lawson
BACKGROUND: Asthma severity can be affected by microbial exposures. However, less is known about the specific indoor agents aggravating the disease in children. We examined the associations between indoor endotoxin and beta-(1 → 3)-D-glucan exposures and asthma severity in children with asthma. METHODS: A clinical cross-sectional study of schoolchildren (aged 7-17 years) was conducted in the province of Saskatchewan, Canada. Children with asthma (n = 116) were identified from 335 participants using a combination of survey responses and objective clinical assessments...
May 2018: Respiratory Medicine
https://www.readbyqxmd.com/read/29684456/radioprotective-effect-of-orally-administered-beta-d-glucan-derived-from-saccharomyces-cerevisiae
#2
Fang Liu, Zhuanzi Wang, Jia Liu, Wenjian Li
The present study was to evaluate the in vivo radioprotective effect of oral administration of Saccharomyces cerevisiae-derived-beta-d-glucan (S. cerevisiae-BG) and to investigate the protective mechanism. The results demonstrated that oral pretreatment with 350 mg/kg S. cerevisiae-BG once daily for 14 consecutive days significantly increased the survival rate of mice from 6 Gy X-rays irradiation. At the 30th day after irradiation, cellularity and the percentage of hematopoietic stem/progenitor cells in bone marrow (BM) of surviving mice were increased by S...
April 20, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29486797/a-randomized-controlled-trial-evaluating-the-efficacy-and-safety-of-bth1677-in-combination-with-bevacizumab-carboplatin-and-paclitaxel-in-first-line-treatment-of-advanced-non-small-cell-lung-cancer
#3
Walburga Engel-Riedel, Jamie Lowe, Paulette Mattson, J Richard Trout, Richard D Huhn, Michele Gargano, Myra L Patchen, Richard Walsh, My My Trinh, Mariève Dupuis, Folker Schneller
BACKGROUND: BTH1677, a beta-glucan pathogen-associated molecular pattern molecule, drives an anti-cancer immune response in combination with oncology antibody therapies. This phase II study explored the efficacy, pharmacokinetics (PK), and safety of BTH1677 combined with bevacizumab/carboplatin/paclitaxel in patients with untreated advanced non-small cell lung cancer (NSCLC). METHODS: Patients were randomized to the BTH1677 arm (N = 61; intravenous [IV] BTH1677, 4 mg/kg, weekly; IV bevacizumab, 15 mg/kg, once each 3-week cycle [Q3W]; IV carboplatin, 6 mg/mL/min Calvert formula area-under-the-curve, Q3W; and IV paclitaxel, 200 mg/m2 , Q3W) or Control arm (N = 31; bevacizumab/carboplatin/paclitaxel as above)...
February 27, 2018: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/29435400/encapsulation-of-cadmium-selenide-nanocrystals-in-biocompatible-nanotubes-dft-calculations-x-ray-diffraction-investigations-and-confocal-fluorescence-imaging
#4
David G Calatayud, Haobo Ge, Navaratnarajah Kuganathan, Vincenzo Mirabello, Robert M J Jacobs, Nicholas H Rees, Craig T Stoppiello, Andrei N Khlobystov, Rex M Tyrrell, Enrico Da Como, Sofia I Pascu
The encapsulation of CdSe nanocrystals within single-walled carbon nanotube (SWNT) cavities of varying dimensions at elevated temperatures under strictly air-tight conditions is described for the first time. The structures of CdSe nanocrystals under confinement inside SWNTs was established in a comprehensive study, combining both experimental and DFT theoretical investigations. The calculated binding energies show that all considered polymorphs [(3:3), (4:4), and (4:2)] may be obtained experimentally. The most thermodynamically stable structure (3:3) is directly compared to the experimentally observed CdSe structures inside carbon nanotubes...
February 2018: ChemistryOpen
https://www.readbyqxmd.com/read/29370030/beta-d-glucan-testing-in-patients-with-fungal-endophthalmitis
#5
Anton M Kolomeyer, Kathleen M Murphy, Anastasia Traband, Ian Frank, Benjamin J Kim
PURPOSE: To review the literature on beta-D-glucan (BDG) testing in fungal endophthalmitis. METHODS: Review of primary literature using PubMed through April 2017 and presentation of an illustrative case report. A total of 231 articles were identified and 43 were ultimately chosen for review based on relevance and presence of ophthalmologic examination and objective data. RESULTS: Beta-D-glucan is a major component of fungal cell walls. It is quantified using a calorimetry-based Fungitell assay based on modification of the limulus amebocyte lysate...
April 2018: Retina
https://www.readbyqxmd.com/read/29289653/in-vitro-investigations-on-the-effects-of-semi-synthetic-sulphated-carbohydrates-on-the-immune-status-of-cultured-common-carp-cyprinus-carpio-leucocytes
#6
N Kareem, E Yates, M Skidmore, D Hoole
The rapid emergence of drug resistance, unfavourable immunosuppression and mounting evidence to suggest the deleterious accumulation of drug breakdown residues within animal tissues has driven a strong desire to move away from these current methods of disease control. Some natural products such as β-glucan, which are extracted from, for example, plants and fungi, are able to modulate the immune system and increase protection against diseases. However, these products are heterogeneous and their effects can be variable thus limiting their applicability and reliability...
March 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29275468/targeting-myeloid-derived-suppressor-cells-in-cancer
#7
Waseem Anani, Michael R Shurin
Myeloid derived suppressor cells (MDSC) represent only a minor fraction of circulating blood cells but play an important role in tumor formation and progression. They are a heterogeneous group of cells that influence the tumor microenvironment by depletion of amino acids, oxidative stress, decreased trafficking of antitumor effector cells, and increased regulatory T and regulatory dendritic cell responses. Investigational treatment strategies targeting MDSCs have attempted to inhibit MDSC development and expansion (stem cell factor blockade, modulate of cell signaling, and target MDSC migration and recruitment), inhibit MDSC function (nitric oxide inhibition and reactive oxygen and nitrogen species inhibition), differentiate MDSCs into more mature cells (Vitamins A and D, all-trans retinoic acid, interleukin-2, toll-like receptor 9 inhibitors, taxanes, beta-glucan particles, tumor-derived exosome inhibition, and very small size proteoliposomes), and destroy MDSCs (cytotoxic agents, ephrin A2 degradation, anti-interleukin 13, and histamine blockers)...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29245184/evaluation-of-the-use-of-novel-biomarkers-to-augment-antimicrobial-stewardship-program-activities
#8
REVIEW
Kayla R Stover, Rachel M Kenney, Samuel Travis King, Alan E Gross
As antimicrobial stewardship increasingly receives worldwide attention for improving patient care by optimizing antimicrobial therapy, programs are evaluating new tools that may augment antimicrobial stewardship activities. Biomarkers are objective, accurate, and reproducible measures that provide information about medical conditions. A systematic literature search using PubMed/MEDLINE databases was performed to evaluate the use of novel biomarkers as additions to the antimicrobial stewardship armamentarium...
February 2018: Pharmacotherapy
https://www.readbyqxmd.com/read/29226760/the-diagnostic-performance-of-the-beta-glucan-assay-in-the-detection-of-intra-amniotic-infection-with-candida-species
#9
Percy Pacora, Roberto Romero, Offer Erez, Eli Maymon, Bogdan Panaitescu, Juan Pedro Kusanovic, Adi L Tarca, Chaur-Dong Hsu, Sonia S Hassan
INTRODUCTION: A bioassay based on the detection of beta-glucan, a constituent of the cell wall of fungi, has been successfully used to diagnose fungal infections in a variety of biological fluids but not yet in the amniotic fluid. OBJECTIVE: To determine the diagnostic performance of a beta-glucan bioassay in the detection of Candida species in the amniotic fluid of women who either did or did not have an intrauterine contraceptive device (IUD) in place during an episode of spontaneous preterm parturition...
December 27, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29222034/management-of-invasive-candidiasis-and-candidaemia-in-critically-ill-adults-expert-opinion-of-the-european-society-of-anaesthesia-intensive-care-scientific-subcommittee
#10
REVIEW
R-A O'Leary, S Einav, M Leone, K Madách, C Martin, I Martin-Loeches
OBJECTIVE: The global burden of invasive fungal disease is increasing. Candida albicans remains the leading cause of fungal bloodstream infections, although non-albicans candidal infections are emerging. Areas of controversy regarding diagnosis and management are hampering our ability to respond effectively to this evolving threat. The purpose of this narrative review is to address current controversies and provide recommendations to supplement guidelines. DIAGNOSIS OF INVASIVE CANDIDIASIS: Diagnosis of invasive candidiasis requires a combination of diagnostic tests and patient risk factors...
April 2018: Journal of Hospital Infection
https://www.readbyqxmd.com/read/29174675/designing-an-immunocyte-targeting-delivery-system-by-use-of-beta-glucan
#11
Noriko Miyamoto, Shinichi Mochizuki, Kazuo Sakurai
A β-1,3-d-glucan called Schizophyllan (SPG) can form a novel complex with homo oligodeoxynucleotides (ODNs) via the combination of hydrogen bonding and hydrophobic interactions. Dectin-1 is a major receptor involved in the recognition of β-1,3-d-glucans and expressed on antigen presenting cells (APCs) including macrophages, dendritic cells, monocytes, neutrophils, and a subset of T cells. Therefore, the SPG/ODN complex can be used as APCs cell-specific delivery of functional ODNs including unmethylated CpG sequences (CpG-ODNs)...
January 2, 2018: Vaccine
https://www.readbyqxmd.com/read/29157901/inducible-cellulase-production-from-an-organic-solvent-tolerant-bacillus-sp-sv1-and-evolutionary-divergence-of-endoglucanase-in-different-species-of-the-genus-bacillus
#12
Lebin Thomas, Hari Ram, Ved Pal Singh
Bacteria are important sources of cellulases with various industrial and biotechnological applications. In view of this, a non-hemolytic bacterial strain, tolerant to various environmental pollutants (heavy metals and organic solvents), showing high cellulolytic index (7.89) was isolated from cattle shed soil and identified as Bacillus sp. SV1 (99.27% pairwise similarity with Bacillus korlensis). Extracellular cellulases showed the presence of endoglucanase, total cellulase and β-glucosidase activities. Cellulase production was induced in presence of cellulose (3...
April 2018: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/29044182/long-term-intake-of-pasta-containing-barley-1-3-beta-d-glucan-increases-neovascularization-mediated-cardioprotection-through-endothelial-upregulation-of-vascular-endothelial-growth-factor-and-parkin
#13
Valentina Casieri, Marco Matteucci, Claudia Cavallini, Milena Torti, Michele Torelli, Vincenzo Lionetti
Barley (1-3)β-D-Glucan (BBG) enhances angiogenesis. Since pasta is very effective in providing a BBG-enriched diet, we hypothesized that the intake of pasta containing 3% BBG (P-BBG) induces neovascularization-mediated cardioprotection. Healthy adult male C57BL/6 mice fed P-BBG (n = 15) or wheat pasta (Control, n = 15) for five-weeks showed normal glucose tolerance and cardiac function. With a food intake similar to the Control, P-BBG mice showed a 109% survival rate (P < 0.01 vs. Control) after cardiac ischemia (30 min)/reperfusion (60 min) injury...
October 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29036605/survey-of-laboratory-practices-for-diagnosis-of-fungal-infection-in-seven-asian-countries-an-asia-fungal-working-group-afwg-initiative
#14
Ariya Chindamporn, Arunaloke Chakrabarti, Ruoyu Li, Pei-Lun Sun, Ban-Hock Tan, Mitzi Chua, Retno Wahyuningsih, Atul Patel, Zhengyin Liu, Yee-Chun Chen, Methee Chayakulkeeree
An online survey of mycology laboratories in seven Asian countries was conducted to assess the status, competence, and services available. Country representatives from the Asia Fungal Working Group (AFWG) contacted as many laboratories performing mycology diagnosis as possible in their respective countries, requesting that the laboratory heads complete the online survey. In total, 241 laboratories responded, including 71 in China, 104 in India, 11 in Indonesia, 26 in the Philippines, four in Singapore, 18 in Taiwan, and seven in Thailand...
September 20, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/29022661/-candida-in-urine-colonization-infection-when-and-how-to-treat
#15
Laurent Christin
Candida is frequently found in urine cultures. Deciding whether this represents simple colonization or true infection is often difficult since Candida is a normal genital and urinary tract commensal. Urinary tract colonization is facilitated by well identified risk factors. The diagnostic of a true infection relies upon the identification of the usual clinical signs which cannot be attributed to another pathogen ; also, plasma level of beta-D-glucan can contribute to confirm the diagnostic. Treatment success depends upon the possibility to correct the risk factors and appropriate anti-fungal therapy according to in vitro susceptibility testing...
October 11, 2017: Revue Médicale Suisse
https://www.readbyqxmd.com/read/29022634/the-anti-inflammatory-effect-of-agaricus-brasiliensis-is-partly-due-to-its-linoleic-acid-content
#16
Papawee Saiki, Yasuhiro Kawano, Leo J L D Van Griensven, Koyomi Miyazaki
For hundreds of years mushrooms have been used as functional food for health. The basidiomycete Agaricus brasiliensis (A. brasiliensis) is famous for the medicinal properties of its beta glucans and of its antioxidants. Most researchers have studied polysaccharides from A. brasiliensis for their anti-inflammatory activity. However, active compounds from this mushroom have not yet been studied for the inactivation of NO inhibitory activity. The present study aimed to find the active compounds from A. brasiliensis for their NO inhibitory activity related inflammatory activity...
October 12, 2017: Food & Function
https://www.readbyqxmd.com/read/28870313/long-wavelength-near-infrared-transmission-spectroscopy-of-barley-seeds-using-a-supercontinuum-laser-prediction-of-mixed-linkage-beta-glucan-content
#17
Tine Ringsted, Jacob Ramsay, Birthe M Jespersen, Søren R Keiding, Søren B Engelsen
A supercontinuum laser was used to perform the first transmission measurements on intact seeds with long wavelength near-infrared spectroscopy. A total of 105 barley seeds from five different barley genotypes (Bomi, lys5.f, lys5.g, lys16 and lys95) were measured from 2275 to 2375 nm. The mixed-linkage (1→3,1→4)-β-D-glucan (BG) and protein content was measured with wet chemical analysis for each single seed. A partial least squares model correlated the BG % (w/w) with the spectral measurements with a R2 CV and R2 PRED of 0...
September 15, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28729759/transcriptome-wide-identification-and-characterization-of-starch-branching-enzyme-in-finger-millet
#18
Rajhans Tyagi, Apoorv Tiwari, Vijay Kumar Garg, Sanjay Gupta
Starch-branching enzymes (SBEs) are one of the four major enzyme classes involved in starch biosynthesis in plants and play an important role in determining the structure and physical properties of starch granules. Multiple SBEs are involved in starch biosynthesis in plants. Finger millet is calcium rich important serial crop belongs to grass family and the transcriptome data of developing spikes is available on NCBI. In this study it was try to find out the gene sequence of starch branching enzyme and annotate the sequence and submit the sequence for further use...
2017: Bioinformation
https://www.readbyqxmd.com/read/28659321/performance-of-a-quantitative-pcr-based-assay-and-beta-d-glucan-detection-for-diagnosis-of-invasive-candidiasis-in-very-low-birth-weight-preterm-neonatal-patients-candineo-study
#19
MULTICENTER STUDY
Jose Tomas Ramos, Sonia Villar, Emilio Bouza, Elena Bergon-Sendin, Alfredo Perez Rivilla, Caridad Tapia Collados, Mariano Andreu, Candelaria Santana Reyes, María Isolina Campos-Herrero, Jon López de Heredia, María Cruz López Herrera, Paloma Anguita Alonso, Carmen Rosa Pallás-Alonso, Manuel Cuenca-Estrella
An epidemiological, multicenter, noninterventional, observational case-control study was conducted to describe the performance of serum beta-d-glucan (BDG) and Candida PCR in blood, serum, and sterile samples for the diagnosis of invasive candidiasis (IC) in very-low-birth-weight (VLBW) preterm neonates and to compare these techniques with culture of samples from blood and other sterile sites. Seventeen centers participated in the study, and the number of episodes analyzed was 159. A total of 9 episodes of IC from 9 patients (7 confirmed and 2 probable) and 150 episodes of suspected sepsis from 117 controls were identified...
September 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28655067/fatal-ulcerative-enteritis-of-the-small-intestine-in-a-patient-with-ulcerative-colitis-treated-with-vedolizumab
#20
Carmen Monasterio, Annette Schmitt-Gräff, Matthias Pohl, Thomas Truschel, Klaus Warnatz, Wolfgang Kreisel, Robert Thimme, Peter Hasselblatt
Vedolizumab (VDZ) inhibits α4β7 integrins and is used to target intestinal immune responses in patients with inflammatory bowel disease, which is considered to be relatively safe. Here we report on a fatal complication following VDZ administration. A 64-year-old female patient with ulcerative colitis (UC) refractory to tumor necrosis factor inhibitors was treated with VDZ. One week after the second VDZ infusion, she was admitted to hospital with severe diarrhea and systemic inflammatory response syndrome (SIRS)...
October 2017: Zeitschrift Für Gastroenterologie
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