keyword
MENU ▼
Read by QxMD icon Read
search

Biotype

keyword
https://www.readbyqxmd.com/read/27902242/rapid-and-accurate-identification-of-pediococcus-species-isolated-from-korean-fermented-foods-by-maldi-tof-ms-with-local-database-extension
#1
Youngjae Cho, Eiseul Kim, Yoonju Lee, Sun-Kyung Han, Chang-Gyeom Kim, Dong-Won Choo, Young-Rok Kim, Hae-Yeong Kim
Pediococci are halophilic lactic acid bacteria, within the family Lactobacillaceae, which are involved in the fermentation of various salted and fermented foods, such as kimchi and jeotgal. In this study, a MALDI-TOF MS method was developed for the rapid identification of Pediococcus species. Of the 130 Pediococcus spectra aligned with the Biotyper taxonomy database, 122 isolates (93.9%) yielded log scores <1.7, which means they were not identifiable. After registering the spectra of 11 Pediococcus reference strains, all of the isolates were correctly identified, of which 84 (64...
October 27, 2016: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/27900286/selective-and-efficient-elimination-of-vibrio-cholerae-with-a-chemical-modulator-that-targets-glucose-metabolism
#2
Young Taek Oh, Hwa Young Kim, Eun Jin Kim, Junhyeok Go, Wontae Hwang, Hyoung Rae Kim, Dong Wook Kim, Sang Sun Yoon
Vibrio cholerae, a Gram-negative bacterium, is the causative agent of pandemic cholera. Previous studies have shown that the survival of the seventh pandemic El Tor biotype V. cholerae strain N16961 requires production of acetoin in a glucose-rich environment. The production of acetoin, a neutral fermentation end-product, allows V. cholerae to metabolize glucose without a pH drop, which is mediated by the production of organic acid. This finding suggests that inhibition of acetoin fermentation can result in V...
2016: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/27889878/same-day-identification-and-antibiotic-susceptibility-testing-on-positive-blood-cultures-a-simple-and-inexpensive-procedure
#3
K Maelegheer, E Nulens
Fast diagnostic tools are becoming a hot topic in microbiology, especially in the case of septic patients. Therefore, we attempted to develop a fast, inexpensive, accurate and easy method to identify bacteria and perform an antibiotic susceptibility test directly on positive blood cultures that could be used in a routine laboratory. A procedure based on centrifugation and washing steps was performed on 110 non-duplicated (including nine seeded) positive blood culture bottles. Direct identification (DID) and antimicrobial susceptibility testing (AST) was conducted on the pellet with the MALDI Biotyper and Phoenix, respectively...
November 26, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27888174/phenotypic-and-antibiogram-pattern-of-v-cholerae-isolates-from-a-tertiary-care-hospital-in-mumbai-during-2004-2013-a-retrospective-cross-sectional-study
#4
V Torane, S Kuyare, G Nataraj, P Mehta, S Dutta, B Sarkar
OBJECTIVES: Cholera is a major gastroenteric disease with reports on fluctuation and resistance. Hence, the objective is to determine the trend in seasonality, resistance pattern, prevalent biotypes, serotypes and phage types between 2004 and 2013 among Vibrio cholerae isolates. DESIGN: A retrospective cross-sectional study. SETTINGS: A single-centre study was carried out at a tertiary care hospital in a metropolitan city (Mumbai) of a developing country (India)...
November 25, 2016: BMJ Open
https://www.readbyqxmd.com/read/27872267/endophenotypes-epigenetics-polygenicity-and-more-irv-gottesman-s-dynamic-legacy
#5
David L Braff, Carol A Tamminga
First, we describe the hallmark contributions of Irv Gottesman's pioneering scholarship for schizophrenia research including concepts of polygenicity, gene × environment interactions, epigenetics and the endophenotype concept. Gottesman and colleagues' twin studies showed that genes, not social factors, mediate schizophrenia risk. He then showed that schizophrenia is highly polygenic. Next, he introduced the concept of epigenetics into schizophrenia research. Gottesman then introduced the quantitative endophenotype concept...
November 21, 2016: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/27871123/a-focus-on-quality-and-safety-traits-of-saccharomyces-cerevisiae-isolated-from-uva-di-troia-grape-variety
#6
Leonardo Petruzzi, Antonio Bevilacqua, Maria Rosaria Corbo, Barbara Speranza, Vittorio Capozzi, Milena Sinigaglia
The aim of this work was to study Saccharomyces cerevisiae strains isolated from vineyards of the autochthonous grape variety "Uva di Troia" located in different geographical areas of Apulian region (Southern Italy). Four hundred isolates were studied in relation to H2 S production, β-glucosidase activity, and pigments adsorption from grape skin. Thus, 81 isolates were selected, identified through the amplification of the interdelta region, and grouped in 19 biotypes (from I to XIX). The enological performances were assessed to determine the content of residual sugars, ethanol, glycerol, and volatile acidity, after a microfermentation in Uva di Troia must for each isolate...
November 21, 2016: Journal of Food Science
https://www.readbyqxmd.com/read/27870890/latitudinal-diversity-of-culex-pipiens-biotypes-and-hybrids-in-farm-peri-urban-and-wetland-habitats-in-europe
#7
Chantal B F Vogels, Tim W R Möhlmann, Diede Melsen, Guido Favia, Uno Wennergren, Constantianus J M Koenraadt
Despite the presence of Culex (Cx.) pipiens mosquitoes and circulation of West Nile virus (WNV), WNV outbreaks have so far not occurred in northern Europe. The species Cx. pipiens consists of two morphologically identical biotypes, pipiens and molestus, which can form hybrids. Until now, population dynamic studies of Cx. pipiens have not differentiated between biotypes and hybrids at the European scale, nor have they used comparative surveillance approaches. We therefore aimed to elucidate the relative abundance of Cx...
2016: PloS One
https://www.readbyqxmd.com/read/27868301/exploring-maldi-tof-ms-approach-for-a-rapid-identification-of-mycobacterium-avium-subsp-paratuberculosis-field-isolates
#8
M Ricchi, A Mazzarelli, A Piscini, A Di Caro, A Cannas, S Leo, S Russo, N Arrigoni
AIMS: The aim of the study was to explore the suitability of MALDI-TOF MS for a rapid and correct identification of Mycobacterium avium subsp. paratuberculosis (MAP) field isolates. METHODS AND RESULTS: MALDI-TOF MS approach is becoming one of the most popular tests for the identification of intact bacterial cells which has been shown to be fast and reliable. For this purpose, 36 MAP field isolates were analysed through MALDI-TOF MS and the spectra compared with two different databases: one provided by the vendor of the system employed (Biotyper Version 3...
November 21, 2016: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/27863949/imipenem-avibactam-a-novel-combination-for-the-rapid-detection-of-carbapenemase-activity-in-enterobacteriaceae-and-acinetobacter-baumannii-by-matrix-assisted-laser-desorption-ionization-time-of-flight-mass-spectrometry
#9
Marina Oviaño, Germán Bou
In the present study, we propose a novel matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS)-based method for detecting carbapenemase-producing Enterobacteriaceae and Acinetobacter baumannii. For this, we analyzed a series of 131 isolates. Among them, a total of 115 Enterobacteriaceae: 79 of them carrying a carbapenemase enzyme (15blaKPC, 7blaNDM, 11blaIMP, 12blaVIM, and 34blaOXA-48) and 16 A. baumannii isolates: 15 of them carrying carbapenemases (10blaOXA-23, 2blaOXA-58, 2blaOXA-24, and 1blaOXA-237)...
October 18, 2016: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/27862724/genotypiing-of-single-spore-isolates-of-a-pasteuria-penetrans-population-occurring-in-florida-using-snp-based-markers
#10
Soumi Joseph, L M Schmidt, W B Danquah, P Timper, T Mekete
AIMS: To generate single spore lines of a population of bacterial parasite of root-knot nematode (RKN), Pasteuria penetrans, isolated from Florida and examine genotypic variation and virulence characteristics exist within the population. METHODS AND RESULTS: Six single spore lines (SSP), 16SSP, 17SSP, 18SSP, 25SSP, 26SSP, and 30SSP were generated. Genetic variability was evaluated by comparing single nucleotide polymorphisms (SNP's) in six protein-coding genes and the 16S rRNA gene...
November 8, 2016: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/27862451/application-of-maldi-biotyper-to-cyanobacterial-profiling
#11
Susumu Y Imanishi, Takuma Nakayama, Hirohiko Asukabe, Ken-Ichi Harada
RATIONALE: MALDI-MS has been used for bacterial profiling. A few reports have shown MALDI-MS profiling of cultured cyanobacteria; however, these applications have been limited. In this study, we have investigated whether rapid profiling and differentiation of cyanobacteria including harmful genera Microcystis and Anabaena (Dolichospermum) can be performed by MALDI Biotyper analysis of intact cells. METHODS: Twenty-two cyanobacterial strains including 12 Microcystis, 7 Anabaena, 1 Pseudanabaena, 1 Planktothrix, and 1 Synechocystis, were cultured...
November 14, 2016: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/27855173/global-population-structure-of-a-worldwide-pest-and-virus-vector-genetic-diversity-and-population-history-of-the-bemisia-tabaci-sibling-species-group
#12
Margarita Hadjistylli, George K Roderick, Judith K Brown
The whitefly Bemisia tabaci sibling species (sibsp.) group comprises morphologically indiscernible lineages of well-known exemplars referred to as biotypes. It is distributed throughout tropical and subtropical latitudes and includes the contemporary invasive haplotypes, termed B and Q. Several well-studied B. tabaci biotypes exhibit ecological and biological diversity, however, most members are poorly studied or completely uncharacterized. Genetic studies have revealed substantial diversity within the group based on a fragment of the mitochondrial cytochrome oxidase I (mtCOI) sequence (haplotypes), with other tested markers being less useful for deep phylogenetic comparisons...
2016: PloS One
https://www.readbyqxmd.com/read/27854317/modulating-the-gut-micro-environment-in-the-treatment-of-intestinal-parasites
#13
REVIEW
Luis Vitetta, Emma Tali Saltzman, Tessa Nikov, Isabelle Ibrahim, Sean Hall
The interactions of micro-organisms cohabitating with Homo sapiens spans millennia, with microbial communities living in a symbiotic relationship with the host. Interacting to regulate and maintain physiological functions and immunological tolerance, the microbial community is able to exert an influence on host health. An example of micro-organisms contributing to an intestinal disease state is exhibited by a biodiverse range of protozoan and bacterial species that damage the intestinal epithelia and are therefore implicated in the symptoms of diarrhea...
November 16, 2016: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/27849586/origins-of-the-current-seventh-cholera-pandemic
#14
Dalong Hu, Bin Liu, Lu Feng, Peng Ding, Xi Guo, Min Wang, Boyang Cao, Peter R Reeves, Lei Wang
Vibrio cholerae has caused seven cholera pandemics since 1817, imposing terror on much of the world, but bacterial strains are currently only available for the sixth and seventh pandemics. The El Tor biotype seventh pandemic began in 1961 in Indonesia, but did not originate directly from the classical biotype sixth-pandemic strain. Previous studies focused mainly on the spread of the seventh pandemic after 1970. Here, we analyze in unprecedented detail the origin, evolution, and transition to pandemicity of the seventh-pandemic strain...
November 14, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27836381/universal-protocol-for-the-rapid-automated-detection-of-carbapenem-resistant-gram-negative-bacilli-directly-from-blood-cultures-by-matrix-assisted-laser-desorption-ionisation-time-of-flight-mass-spectrometry-maldi-tof-ms
#15
Marina Oviaño, Katrin Sparbier, Maria José Barba, Markus Kostrzewa, Germán Bou
Detection of carbapenemase-producing bacteria directly from blood cultures is a major challenge, as patients with bacteraemia are critically ill. Early detection can be helpful for selection of the most appropriate antibiotic therapy as well as adequate control of outbreaks. In the current study, a novel matrix-assisted laser desorption/ionisation time-of-flight (MALDI-TOF)-based method was developed for the rapid, automated detection of carbapenemase-producing Enterobacteriaceae, Pseudomonas aeruginosa and Acinetobacter baumannii directly from blood cultures...
October 20, 2016: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/27833911/concurrent-resolution-of-chronic-diarrhea-likely-due-to-crohn-s-disease-and-infection-with-mycobacterium-avium-paratuberculosis
#16
Shoor V Singh, J Todd Kuenstner, William C Davis, Prabhat Agarwal, Naveen Kumar, Devendra Singh, Saurabh Gupta, Kundan K Chaubey, Ashok Kumar, Jyoti Misri, Sujatha Jayaraman, Jagdip S Sohal, Kuldeep Dhama
Examination of samples of stool from a 61-year-old male patient, presenting with the clinical symptoms of Crohn's disease (CD), revealed massive shedding of acid fast bacilli with the morphology of Mycobacterium avium paratuberculosis (MAP), the causative agent of Johne's disease in cattle. MAP was cultured from the stool. Biotyping of the bacterium isolated from cultures of stool demonstrated, it was the Indian Bison biotype of MAP, the dominant biotype infecting livestock and humans in India. Based on this finding and because the patient was unresponsive to standard therapy used in India to treat patients with gastrointestinal inflammatory disorders, the patient was placed on a regimen of multi-antibiotic therapy, currently used to treat tuberculosis and CD...
2016: Frontiers in Medicine
https://www.readbyqxmd.com/read/27830171/data-for-itraq-based-quantitative-proteomics-analysis-of-different-biotypes-in-echinochloa-crus-galli-with-multi-herbicide-treatment
#17
Xia Yang, Zichang Zhang, Tao Gu, Mingchao Dong, Qiong Peng, Lianyang Bai, Yongfeng Li
Barnyardgrass (Echinochloa crus-galli) is one of the most troublesome herbicide-resistant weeds worldwide that interferes with rice growth and rice yield. Here we provide the data from a comparative proteomic analysis of leaves in resistant (R) and susceptible (S) biotypes of Echinochloa crus-galli both with and without multi-herbicide treatment in two independent biological experiments using iTRAQ. The distribution of length and number of peptides, mass and sequence coverage of proteins were presented, and the repeatability of the replicates was analyzed...
December 2016: Data in Brief
https://www.readbyqxmd.com/read/27826358/use-of-molecular-typing-to-investigate-bacterial-translocation-from-the-intestinal-tract-of-chlorpyrifos-exposed-rats
#18
Claire Joly Condette, Bertin Elion Dzon, Farida Hamdad, Maurice Biendo, Véronique Bach, Hafida Khorsi-Cauet
BACKGROUND: Human are confronted on a daily basis with contaminant pesticide residues in food, water and other components of the environment. Although the digestive system is the first organ to come into contact with food contaminants, very few data are available on the impact of low-dose pesticide exposure during the in utero and postnatal periods on intestinal bacterial translocation (BT). Previous studies have revealed that chlorpyrifos (CPF) exposure is associated with intestinal dysbiosis and the contamination of sterile organs...
2016: Gut Pathogens
https://www.readbyqxmd.com/read/27817844/brain-structure-biomarkers-in-the-psychosis-biotypes-findings-from-the-bipolar-schizophrenia-network-for-intermediate-phenotypes
#19
Elena I Ivleva, Brett A Clementz, Anthony M Dutcher, Sara J M Arnold, Haekyung Jeon-Slaughter, Sina Aslan, Bradley Witte, Gaurav Poudyal, Hanzhang Lu, Shashwath A Meda, Godfrey D Pearlson, John A Sweeney, Matcheri S Keshavan, Carol A Tamminga
BACKGROUND: The current definitions of psychotic illness lack biological validity, motivating alternative biomarker-driven disease entities. Building on experimental constructs-Biotypes-that were previously developed from cognitive and neurophysiologic measures, we contrast brain anatomy characteristics across Biotypes alongside conventional diagnoses, examining gray matter density (GMD) as an independent validator for the Biotypes. METHODS: Whole brain GMD measures were examined in probands, their relatives, and healthy subjects organized by Biotype and then by DSM-IV-TR diagnosis (n = 1409) using voxel-based morphometry with subsequent subject-level regional characterization and distribution analyses...
August 31, 2016: Biological Psychiatry
https://www.readbyqxmd.com/read/27806525/clinical-effectiveness-of-gingival-depigmentation-using-conventional-surgical-scrapping-and-diode-laser-technique-a-quasi-experimental-study
#20
Raghavendra Reddy Nagati, M Ragul, Nabeeh A Al-Qahtani, K S Ravi, S Tikare, Mohan Kumar Pasupuleti
Excessive gingival pigmentation is a major aesthetic concern in modern society, though it is not a medical problem they consider it as a negative attribute. Patients with gingival hyperpigmentation usually complain and request cosmetic therapy, particularly if the pigmentation is visible during speaking and smiling. Various depigmentation methods, including burr abrasion, cryosurgery, electro-surgery, split thickness flap excision and surgical scraping techniques have been used with varying degrees of success...
August 1, 2016: Global Journal of Health Science
keyword
keyword
24888
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"