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https://www.readbyqxmd.com/read/28717311/using-real-time-polymerase-chain-reaction-as-an-alternative-rapid-method-for-enumeration-of-colony-count-in-live-brucella-vaccines
#1
Waleed S Shell, Mahmoud L Sayed, A A Samy, Ghada Mohamed Al-Sadek, Gina Mohamed Mohamed Abd El-Hamid, Abdel Hakam M Ali
AIM: Brucellosis is a major bacterial zoonosis of global importance affecting a range of animal species and man worldwide. It has economic, public health, and bio-risk importance. Control and prevention of animal brucellosis mainly depend on accurate diagnostic tools and implementation of effective and safe animal vaccination program. There are three types of animal Brucella live vaccines - Brucella melitensis Rev-1 vaccine, Brucella abortus S19, and B. abortus RB51. Evaluation of these vaccines depends mainly on enumeration of Brucella viable count...
June 2017: Veterinary World
https://www.readbyqxmd.com/read/28709989/evaluating-biapenem-dosage-regimens-in-intensive-care-unit-patients-with-pseudomonas-aeruginosa-infections-a-pharmacokinetic-pharmacodynamic-analysis-using-monte-carlo-simulation
#2
Yongfu Hang, Yafang Chen, Ling Xue, Shusen Sun, Long Liu, Jie Gao, Cheng Xie, Xianfeng Zhang, Jianguo Zhu, Jun Jin, Liyan Miao
This study sought to both identify optimal dosage regimens and estimate pharmacokinetic/pharmacodynamics characteristics of short-infusion (SI) versus extended-infusion (EI) for the use of biapenem against Pseudomonas aeruginosa infections in Chinese Intensive Care patients. A total of 85 strains of P. aeruginosa were collected, and the minimum inhibitory concentration (MIC) of biapenem was measured by the serial two-fold agar dilution method. We designed four frequently used clinical regimens: biapenem 300mg I...
July 11, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28705266/a-new-method-for-blood-nt-probnp-determination-based-on-a-near-infrared-point-of-care-testing-device-with-high-sensitivity-and-wide-scope
#3
Xiao Guang Zhang, Yao Gen Shu, Ju Gao, Xuan Wang, Li Peng Liu, Meng Wang, Yu Xi Cao, Yi Zeng
OBJECTIVE: To develop a rapid, highly sensitive, and quantitative method for the detection of NT-proBNP levels based on a near-infrared point-of-care diagnostic (POCT) device with wide scope. METHODS: The lateral flow assay (LFA) strip of NT-proBNP was first prepared to achieve rapid detection. Then, the antibody pairs for NT-proBNP were screened and labeled with the near-infrared fluorescent dye Dylight-800. The capture antibody was fixed on a nitrocellulose membrane by a scribing device...
June 2017: Biomedical and Environmental Sciences: BES
https://www.readbyqxmd.com/read/28701326/a%C3%AE-seeding-potency-peaks-in-the-early-stages-of-cerebral-%C3%AE-amyloidosis
#4
Lan Ye, Jay Rasmussen, Stephan A Kaeser, Anne-Marie Marzesco, Ulrike Obermüller, Jasmin Mahler, Juliane Schelle, Jörg Odenthal, Christian Krüger, Sarah K Fritschi, Lary C Walker, Matthias Staufenbiel, Frank Baumann, Mathias Jucker
Little is known about the extent to which pathogenic factors drive the development of Alzheimer's disease (AD) at different stages of the long preclinical and clinical phases. Given that the aggregation of the β-amyloid peptide (Aβ) is an important factor in AD pathogenesis, we asked whether Aβ seeds from brain extracts of mice at different stages of amyloid deposition differ in their biological activity. Specifically, we assessed the effect of age on Aβ seeding activity in two mouse models of cerebral Aβ amyloidosis (APPPS1 and APP23) with different ages of onset and rates of progression of Aβ deposition...
July 12, 2017: EMBO Reports
https://www.readbyqxmd.com/read/28698449/in-vitro-evaluation-of-the-inhibitory-activity-of-thymoquinone-in-combatting-candida-albicans-in-denture-stomatitis-prevention
#5
Ahmad M Al-Thobity, Khalifa S Al-Khalifa, Mohammed M Gad, Mohammed Al-Hariri, Aiman A Ali, Talal Alnassar
Candida albicans adhesion and proliferation on denture bases may lead to denture stomatitis, which is a common and recurrent problem in denture wearers. The goal of this study was to assess the inhibitory effect of thymoquinone incorporated in the polymethyl methacrylate denture base material against Candida albicans. Eighty acrylic resin specimens were fabricated and divided into eight groups (n = 10) according to thymoquinone concentrations of 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, and 5% of acrylic powder. Two methods were used to evaluate the effect of thymoquinone on Candida albicans: the slide count and the serial dilution test...
July 8, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28696678/benchmarking-water-quality-from-wastewater-to-drinking-waters-using-reduced-transcriptome-of-human-cells
#6
Pu Xia, Xiaowei Zhang, Hanxin Zhang, Pingping Wang, Mingming Tian, Hongxia Yu
One of the major challenge in environmental science is how to monitor and assess the risk of complex environmental mixtures. In vitro bioassays with limited key toxicological endpoints have been shown to be suitable to evaluate mixtures of organic pollutants in wastewater and recycled water. Omics approaches such as transcriptomics can monitor biological effects at genome-scale. However, few studies have applied omics approach in the assessment of mixtures of organic micropollutants. Here, an omics approach was developed for profiling bioactivity of ten water samples ranging from wastewater to drinking water in human cells by a reduced human transcriptome (RHT) method and dose response modeling...
July 11, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28695639/variation-in-aluminium-patch-test-reactivity-over-time
#7
Ingrid Siemund, Martin Mowitz, Erik Zimerson, Magnus Bruze, Monica Hindsén
BACKGROUND: Contact allergy to aluminium has been reported more frequently in recent years. It has been pointed out that positive patch test reactions to aluminium may not be reproducible on retesting. OBJECTIVES: To investigate possible variations in patch test reactivity to aluminium over time. METHODS: Twenty-one adults, who had previously reacted positively to aluminium, were patch tested with equimolar dilution series in pet. of aluminium chloride hexahydrate and aluminium lactate, four times over a period of 8 months...
July 11, 2017: Contact Dermatitis
https://www.readbyqxmd.com/read/28691030/a-novel-capillary-electrophoresis-based-high-throughput-multiplex-polymerase-chain-reaction-system-for-the-simultaneous-detection-of-nine-pathogens-in-swine
#8
Xu-Long Wu, Lu Xiao, Hua Lin, Miao Yang, Shi-Jie Chen, Wei An, Yin Wang, Xue-Ping Yao, Ze-Xiao Yang, Zi-Zhong Tang
Here we aimed to develop a capillary electrophoresis-based high-throughput multiplex polymerase chain reaction (PCR) system for the simultaneous detection of nine pathogens in swine. Nine pairs of specific primers and a set of universal primers were designed; the multiplex PCR was established. The specificity and cross-reactivity of this assay were examined, and the detection limit was determined using serial 10-fold dilutions of plasmids containing the target sequences. The assay was further tested using 144 clinical samples...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28687514/management-and-control-of-microbiologically-influenced-corrosion-mic-in-the-oil-and-gas-industry-overview-and-a-north-sea-case-study
#9
Torben Lund Skovhus, Richard B Eckert, Edgar Rodrigues
Microbiologically influenced corrosion (MIC) is the terminology applied where the actions of microorganisms influence the corrosion process. In literature, terms such as microbial corrosion, biocorrosion, microbially influenced/induced corrosion, and biodegradation are often applied. MIC research in the oil and gas industry has seen a revolution over the past decade, with the introduction of molecular microbiological methods: (MMM) as well as new industry standards and procedures of sampling biofilm and corrosion products from the process system...
July 4, 2017: Journal of Biotechnology
https://www.readbyqxmd.com/read/28687436/a-novel-fully-automated-system-for-quantification-of-hepatitis-b-virus-dna-using-magnetic-bead-based-method-combined-with-real-time-pcr
#10
Wen Jing Li, Hong Xing Xu, Dong Sheng Wu, Yuan Jian Wu, Wei Dong Xu
BACKGROUND: Hepatitis B virus (HBV) infection is a major global health problem and causes liver damage as cirrhosis of the liver or liver cancer. Development of an accurate, sensitive and reproducible detection method for detecting and monitoring HBV DNA is very necessary and urgent. OBJECTIVES: The aims were to evaluate the analytical performances of the fully automated Pre-NAT system comparing to domestic assay, and to explore the role of highly sensitive quantification of HBV DNA in the management of chronic HBV infection...
July 4, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/28685700/substituted-benzamides-from-antiinflammatory-and-p38-kinase-inhibitors-to-antitubercular-activity-design-synthesis-and-screening
#11
Ravindra Kulkarni, Umakant Mitkari, G Achaiah, Stefan Laufer, D V R N Bikshapti, V M Chandrashekar, P B Gurav, S J Joshi, V D Chipade
A series of amides possessing phenoxy/benzyloxy/pyridinyl groups has been synthesized by benzoylation of respective amines in presence of base with moderate to encouraging yields. Upon confirmation of structure, compounds were subjected for p38 kinase inhibitory, anti-inflammatory, antimicrobial and antitubercular activities. Antiinflammatory activity was determined using carageenan induced rat paw edema model while p38 kinase inhibitory activity was studied using ELISA method and serial dilution method was employed to determine MICs...
July 7, 2017: Mini Reviews in Medicinal Chemistry
https://www.readbyqxmd.com/read/28679646/multiplexed-elimination-of-wild-type-dna-and-high-resolution-melting-prior-to-targeted-resequencing-of-liquid-biopsies
#12
Ioannis Ladas, Mariana Fitarelli-Kiehl, Chen Song, Viktor A Adalsteinsson, Heather A Parsons, Nancy U Lin, Nikhil Wagle, G Mike Makrigiorgos
BACKGROUND: The use of clinical samples and circulating cell-free DNA (cfDNA) collected from liquid biopsies for diagnostic and prognostic applications in cancer is burgeoning, and improved methods that reduce the influence of excess wild-type (WT) portion of the sample are desirable. Here we present enrichment of mutation-containing sequences using enzymatic degradation of WT DNA. Mutation enrichment is combined with high-resolution melting (HRM) performed in multiplexed closed-tube reactions as a rapid, cost-effective screening tool before targeted resequencing...
July 5, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28678344/prebiotic-potential-and-chemical-composition-of-seven-culinary-spice-extracts
#13
Qing-Yi Lu, Paula H Summanen, Ru-Po Lee, Jianjun Huang, Susanne M Henning, David Heber, Sydney M Finegold, Zhaoping Li
The objective of this study was to investigate prebiotic potential, chemical composition, and antioxidant capacity of spice extracts. Seven culinary spices including black pepper, cayenne pepper, cinnamon, ginger, Mediterranean oregano, rosemary, and turmeric were extracted with boiling water. Major chemical constituents were characterized by RP-HPLC-DAD method and antioxidant capacity was determined by measuring colorimetrically the extent to scavenge ABTS radical cations. Effects of spice extracts on the viability of 88 anaerobic and facultative isolates from intestinal microbiota were determined by using Brucella agar plates containing serial dilutions of extracts...
July 5, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28676870/a-precise-and-accurate-microfluidic-droplet-dilutor
#14
W Postek, T S Kaminski, P Garstecki
We demonstrate a microfluidic system for the precise (coefficient of variance between repetitions below 4%) and highly accurate (average difference from two-fold dilution below 1%) serial dilution of solutions inside droplets with a volume of ca. 1 μl. The two-fold dilution series can be prepared with the correlation coefficient as high as R(2) = 0.999. The technique that we here describe uses hydrodynamic traps to precisely meter every droplet used in subsequent dilutions. We use only one metering trap to meter each and every droplet involved in the process of preparation of the dilution series...
July 5, 2017: Analyst
https://www.readbyqxmd.com/read/28676555/composition-of-two-week-change-in-body-weight-under-unrestricted-free-living-conditions
#15
Surabhi Bhutani, Eva Kahn, Esra Tasali, Dale A Schoeller
The composition of weight change has a large impact on energy balance calculations. Composition of long-term weight change interventions is well-documented, but information on short-term weight change under unrestricted free-living conditions is limited. The composition and energy density of the changes in body weight during 2-week free-living conditions were analyzed in adults from two cohorts: cohort 1 (n = 24) included participants from the reproducibility subset of the Observing Protein and Energy Nutrition study; cohort 2 (n = 22) included participants who were studied under free-living conditions in an ongoing study in the Chicago area...
July 2017: Physiological Reports
https://www.readbyqxmd.com/read/28672036/performance-of-the-sd-bioline%C3%A2-hat-rapid-test-in-various-diagnostic-algorithms-for-gambiense-human-african-trypanosomiasis-in-the-democratic-republic-of-the-congo
#16
Crispin Lumbala, Paul R Bessell, Pascal Lutumba, Sylvain Baloji, Sylvain Biéler, Joseph M Ndung'u
We carried out a study to compare the performance, in terms of sensitivity and specificity, of the new SD BIOLINE® HAT rapid diagnostic test (RDT) with the card agglutination test for trypanosomiasis (CATT) for diagnosis of human African trypanosomiasis (HAT) in the Democratic Republic of the Congo (DRC). Participants were enrolled actively by four mobile teams, and passively at four health facilities in three provinces. Consenting participants were tested concurrently with the RDT and CATT on whole blood...
2017: PloS One
https://www.readbyqxmd.com/read/28661055/evaluation-the-architect-ebv-vca-igm-vca-igg-and-ebna-1-igg-chemiluminescent-immunoassays-to-assess-ebv-serostatus-prior-transplantation
#17
Sarah Maylin, Linda Feghoul, Maud Salmona, Adel Herda, Séverine Mercier-Delarue, François Simon, Jérôme Legoff
Prior to transplantation of hematopoietic stem cells or solid organ, donor and recipient EBV serostatus has to be determined to assess risks of post-transplant lymphoproliferative disorders. Sensitivity of EBV Viral capsid antigens (VCA) IgG and EBV nuclear antigen-1 (EBNA-1) is critical to define past infection and a good specificity of VCA IgM is required to avoid any disqualification of cord blood (CB) units. Architect™ EBV antibody panel (Architect assay) providing a high throughput was compared to a semi-automated ELISA (Etimax assays Diasorin) to assess sensitivities and specificities of VCA and EBNA-1 IgG and VCA IgM on 419 sera collected from immunocompromised patients (n=184) and from pregnant women who agreed to give CB cells (n=235)...
June 29, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28652899/comparison-of-the-antimicrobial-efficacy-of-calcium-hydroxide-and-photodynamic-therapy-against-enterococcus-faecalis-and-candida-albicans-in-teeth-with-periapical-lesions-an-in-vivo-study
#18
Zohre Ahangari, Maryam Mojtahed Bidabadi, Mohammad Asnaashari, Afsaneh Rahmati, Fahimeh Sadat Tabatabaei
Introduction: Elimination of pathological microflora of root canal systems is a major goal in endodontic treatment. This study aimed to compare the antimicrobial efficacy of calcium hydroxide as an intracanal medication and antibacterial photodynamic therapy (aPDT) against Enterococcus faecalis and Candida albicans in teeth with periapical (PA) lesions. Methods: This in vivo study was conducted on 20 patients with single-rooted mandibular premolar with previously failed endodontic treatment. This study was performed as a clinical trial (IRCTID: IRCT2016090429686N1)...
2017: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/28648083/temporal-signal-pattern-recognition-in-mass-spectrometry-a-method-for-rapid-identification-and-accurate-quantification-of-biomarkers-for-inborn-errors-of-metabolism-with-quality-assurance
#19
Alicia DiBattista, Nathan McIntosh, Monica Lamoureux, Osama Y Al-Dirbashi, Pranesh Chakraborty, Philip Britz-McKibbin
Mass spectrometry (MS)-based metabolomic initiatives that use conventional separation techniques are limited by low sample throughput and complicated data processing that contribute to false discoveries. Herein, we introduce a new strategy for unambiguous identification and accurate quantification of biomarkers for inborn errors of metabolism (IEM) from dried blood spots (DBS) with quality assurance. A multiplexed separation platform based on multisegment injection-capillary electrophoresis-mass spectrometry (MSI-CE-MS) was developed to provide comparable sample throughput to flow injection analysis-tandem MS (FIA-MS/MS) but with greater selectivity as required for confirmatory testing and discovery-based metabolite profiling of volume-restricted biospecimens...
July 11, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28638960/comparative-diagnostic-evaluation-of-omp31-gene-based-taqman%C3%A2-real-time-pcr-assay-with-visual-lamp-assay-and-indirect-elisa-for-caprine-brucellosis
#20
Suman Saini, V K Gupta, K Gururaj, D D Singh, R V S Pawaiya, N K Gangwar, A K Mishra, Deepak Dwivedi, Dimple Andani, Ashok Kumar, T K Goswami
Brucellosis is one of the leading causes of abortion in domestic animals that imposes costs on both economy and society. The disease is highly zoonotic and poses risk to animal handlers due to its zoonotic nature. It causes stillbirth, loss of kids and abortion in last term of pregnancy. Reproductive damage includes infertility in does and orchitis and epididymitis in breeding bucks, which result in high financial losses to farmers and the agriculture industry as a whole. It requires highly sensitive and specific assays to diagnose the disease at field level...
June 21, 2017: Tropical Animal Health and Production
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