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https://www.readbyqxmd.com/read/28513998/ibd-due-to-pid-inflammatory-bowel-disease-caused-by-primary-immunodeficiencies-clinical-presentations-review-of-literature-and-proposal-of-a-rational-diagnostic-algorithm
#1
REVIEW
Daniel Tegtmeyer, Maximilian Seidl, Patrick Gerner, Ulrich Baumann, Christian Klemann
Inflammatory bowel diseases (IBD) including Crohn's disease (CD) and ulcerative colitis (UC) have a multifactorial pathogenesis with complex interactions between polygenetic predispositions and environmental factors. However, IBD can also be caused by monogenic diseases, such as primary immunodeficiencies (PID). Recently, an increasing number of these altogether rare diseases has been described to present often primarily, or solely as IBD. Early recognition of these conditions enables adaption of therapies and thus directly benefits the course of IBDs...
May 17, 2017: Pediatric Allergy and Immunology
https://www.readbyqxmd.com/read/28472089/performance-characteristics-of-an-antibody-based-multiplex-kit-for-determining-recent-hiv-1-infection
#2
Kelly A Curtis, Debra L Hanson, Krystin Ambrose Price, S Michele Owen
The availability of reliable laboratory methods for determining recent HIV infection is vital for accurate estimation of population-based incidence. The mean duration of recent infection (MDRI) and false recent rate (FRR) are critical parameters for HIV incidence assays, as they impact HIV incidence estimates and provide a measure of assay performance. The HIV-1 Multiplex assay is an in-house developed, magnetic bead-based assay that measures virus-specific antibody levels and avidity to multiple analytes. To ensure quality control and to facilitate transfer of the assay to external laboratories or testing facilities, the in-house assay has been adapted and produced in kit form...
2017: PloS One
https://www.readbyqxmd.com/read/28464021/predictive-value-of-clinical-and-laboratory-features-for-the-main-febrile-diseases-in-children-living-in-tanzania-a-prospective-observational-study
#3
Olga De Santis, Mary Kilowoko, Esther Kyungu, Willy Sangu, Pascal Cherpillod, Laurent Kaiser, Blaise Genton, Valérie D'Acremont
BACKGROUND: To construct evidence-based guidelines for management of febrile illness, it is essential to identify clinical predictors for the main causes of fever, either to diagnose the disease when no laboratory test is available or to better target testing when a test is available. The objective was to investigate clinical predictors of several diseases in a cohort of febrile children attending outpatient clinics in Tanzania, whose diagnoses have been established after extensive clinical and laboratory workup...
2017: PloS One
https://www.readbyqxmd.com/read/28434809/real-world-performance-of-the-new-us-hiv-testing-algorithm-in-medical-settings
#4
Kara G Marson, Robert Marlin, Phong Pham, Stephanie E Cohen, Diane Jones, Marguerite Roemer, Philip J Peters, Barbara Haller, Christopher D Pilcher
BACKGROUND: Our medical center laboratory recently adapted its 24/7, two-hourly testing program to use an ARCHITECT-Multispot-viral load (AR-MS-VL) algorithm in place of a previous rapid test-immunofluorescence (RT-IF) algorithm. OBJECTIVES: We evaluated screening test performance, acute case detection, turnaround time and ability to resolve HIV status under the new algorithm. STUDY DESIGN: We considered consecutive HIV tests from January to November 2015...
April 7, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28398683/update-on-syphilis-and-pregnancy
#5
REVIEW
Michael E Tsimis, Jeanne S Sheffield
While the origins of syphilis remain unknown, it has long been recognized as an infectious entity with complex pathophysiology. In this review, we highlighted the epidemiology and risk factors associated with syphilis. The incidence of syphilis in most populations showed a consistent upward trend until the 1940s with the introduction of penicillin as the preferred treatment. The emergence of congenital syphilis and vertical transmission has been a direct result of heterosexual syphilis transmission. We also explore the microbiology and pathogenesis of Treponema pallidum as it directly correlates with its route of transmission and infectivity...
March 15, 2017: Birth Defects Res
https://www.readbyqxmd.com/read/28291127/an-update-on-the-perioperative-management-of-children-with-upper-respiratory-tract-infections
#6
Adrian Regli, Karin Becke, Britta S von Ungern-Sternberg
PURPOSE OF REVIEW: This review summarizes the current evidence for the management of children with recent upper respiratory tract infections (URTIs). Furthermore, the review includes management guidelines for children with URTIs. RECENT FINDINGS: Good history and clinical examination is sufficient in most children presenting with URTI. Testing for immune markers or preoperative nitric oxide measurement does not add any additional value. Preoperative bronchodilator administration, intravenous induction with propofol, and noninvasive airway management all reduce the occurrence of respiratory adverse events...
June 2017: Current Opinion in Anaesthesiology
https://www.readbyqxmd.com/read/28283005/-comparison-of-maldi-tof-and-16s-rrna-methods-in-identification-of-viridans-group-streptococci
#7
Serap Süzük Yıldız, Banu Kaşkatepe, Salih Altınok, Mustafa Çetin, Alper Karagöz, Sümeyra Savaş
Accurate identification of viridans group streptococci (VGS) frequently encountered as a causative agent of infective endocarditis is always a challenge for the clinical microbiology laboratory. Clinical microbiology laboratories generally use semi automatic/full automatic systems, molecular methods and also conventional methods for the identification of these bacteria. There are recent published studies that have used MALDI-TOF (Matrix Assisted Laser Ionization Mass Spectrometry-Time of Flight) systems in the identification of VGS...
January 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28155817/impact-of-the-genexpert-mtb-rif-technology-on-tuberculosis-control
#8
Wendy Susan Stevens, Lesley Scott, Lara Noble, Natasha Gous, Keertan Dheda
Molecular technology revolutionized the diagnosis of tuberculosis (TB) with a paradigm shift to faster, more sensitive, clinically relevant patient care. The most recent molecular leader is the GeneXpert MTB/RIF assay (Xpert) (Cepheid, Sunnyvale, CA), which was endorsed by the World Health Organization with unprecedented speed in December 2010 as the initial diagnostic for detection of HIV-associated TB and for where high rates of drug resistance are suspected. South Africa elected to take an aggressive smear replacement approach to facilitate earlier diagnosis and treatment through the decision to implement the Xpert assay nationally in March 2011, against the backdrop of approximately 6...
January 2017: Microbiology Spectrum
https://www.readbyqxmd.com/read/28107881/a-census-to-determine-the-prevalence-and-risk-factors-for-caprine-arthritis-encephalitis-virus-and-visna-maedi-virus-in-the-swiss-goat-population
#9
B Thomann, L C Falzon, G Bertoni, H R Vogt, G Schüpbach-Regula, I Magouras
In Switzerland, viruses belonging to two different phylogenetic groups of small ruminant lentiviruses (SRLV) are currently circulating: the caprine arthritis-encephalitis virus (CAEV) and visna/maedi virus (VMV). In the past two decades, a mandatory national control program has led to a very low prevalence of seropositivity, while completely eliminating CAE as a clinical manifestation. However, in order to reduce the high costs and effort associated with this program, adjustments based on the most recent epidemiological knowledge are needed...
February 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28077697/point-counterpoint-what-is-the-optimal-approach-for-detection-of-clostridium-difficile-infection
#10
Ferric C Fang, Christopher R Polage, Mark H Wilcox
INTRODUCTIONIn 2010, we published an initial Point-Counterpoint on the laboratory diagnosis of Clostridium difficile infection (CDI). At that time, nucleic acid amplification tests (NAATs) were just becoming commercially available, and the idea of algorithmic approaches to CDI was being explored. Now, there are numerous NAATs in the marketplace, and based on recent proficiency test surveys, they have become the predominant method used for CDI diagnosis in the United States. At the same time, there is a body of literature that suggests that NAATs lack clinical specificity and thus inflate CDI rates...
March 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28004622/moving-towards-a-reliable-hiv-incidence-test-current-status-resources-available-future-directions-and-challenges-ahead
#11
G Murphy, C D Pilcher, S M Keating, R Kassanjee, S N Facente, A Welte, E Grebe, K Marson, M P Busch, P Dailey, N Parkin, J Osborn, S Ongarello, K Marsh, J M Garcia-Calleja
In 2011 the Incidence Assay Critical Path Working Group reviewed the current state of HIV incidence assays and helped to determine a critical path to the introduction of an HIV incidence assay. At that time the Consortium for Evaluation and Performance of HIV Incidence Assays (CEPHIA) was formed to spur progress and raise standards among assay developers, scientists and laboratories involved in HIV incidence measurement and to structure and conduct a direct independent comparative evaluation of the performance of 10 existing HIV incidence assays, to be considered singly and in combinations as recent infection test algorithms...
December 22, 2016: Epidemiology and Infection
https://www.readbyqxmd.com/read/28002488/the-accuracy-of-diagnostic-tests-for-lyme-disease-in-humans-a-systematic-review-and-meta-analysis-of-north-american-research
#12
Lisa A Waddell, Judy Greig, Mariola Mascarenhas, Shannon Harding, Robbin Lindsay, Nicholas Ogden
There has been an increasing incidence of Lyme disease (LD) in Canada and the United States corresponding to the expanding range of the Ixodes tick vector and Lyme disease agent (Borrelia burgdorferi sensu stricto). There are many diagnostic tests for LD available in North America, all of which have some performance issues, and physicians are concerned about the appropriate use and interpretation of these tests. The objective of this systematic review is to summarize the North American evidence on the accuracy of diagnostic tests and test regimes at various stages of LD...
2016: PloS One
https://www.readbyqxmd.com/read/27956203/syphilis-during-pregnancy-a-preventable-threat-to-maternal-fetal-health
#13
REVIEW
Martha W F Rac, Paula A Revell, Catherine S Eppes
Syphilis remains the most common congenital infection worldwide and has tremendous consequences for the mother and her developing fetus if left untreated. Recently, there has been an increase in the number of congenital syphilis cases in the United States. Thus, recognition and appropriate treatment of reproductive-age women must be a priority. Testing should be performed at initiation of prenatal care and twice during the third trimester in high-risk patients. There are 2 diagnostic algorithms available and physicians should be aware of which algorithm is utilized by their testing laboratory...
December 9, 2016: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/27897226/viral-and-host-characteristics-of-recent-and-established-hiv-1-infections-in-kisumu-based-on-a-multiassay-approach
#14
Newton Otecko, Seth Inzaule, Collins Odhiambo, George Otieno, Valarie Opollo, Alex Morwabe, Kennedy Were, Kenneth Ndiege, Fredrick Otieno, Andrea A Kim, Clement Zeh
Integrated approaches provide better understanding of HIV/AIDS epidemics. We optimised a multiassay algorithm (MAA) and assessed HIV incidence, correlates of recent infections, viral diversity, plus transmission clusters among participants screened for Kisumu Incidence Cohort Study (KICoS1) (2007-2009). We performed BED-CEIA, Limiting antigen (LAg) avidity, Biorad avidity, and viral load (VL) tests on HIV-positive samples. Genotypic analyses focused on HIV-1 pol gene. Correlates of testing recent by MAA were assessed using logistic regression model...
November 29, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27865361/diagnosis-of-hpv-driven-oropharyngeal-cancers-comparing-p16-based-algorithms-with-the-rnascope-hpv-test
#15
Haïtham Mirghani, Odile Casiraghi, Joanne Guerlain, Furrat Amen, Ming-Xiao He, Xiao-Jun Ma, Yuling Luo, Céline Mourareau, Françoise Drusch, Aïcha Ben Lakdhar, Antoine Melkane, Lacau St Guily, Cécile Badoual, Jean Yves Scoazec, Isabelle Borget, Anne Aupérin, Veronique Dalstein, Philippe Vielh
BACKGROUND: Accurate identification of HPV-driven oropharyngeal cancer (OPC) is a major issue and none of the current diagnostic approaches is ideal. An in situ hybridization (ISH) assay that detects high-risk HPV E6/E7 mRNA, called the RNAscope HPV-test, has been recently developed. Studies have suggested that this assay may become a standard to define HPV-status. METHODS: To further assess this test, we compared its performance against the strategies that are used in routine clinical practice: p16 immunohistochemistry (IHC) as a single test and algorithms combining p16-IHC with HPV-DNA identification by PCR (algorithm-1) or ISH (algorithm-2)...
November 2016: Oral Oncology
https://www.readbyqxmd.com/read/27854290/investigating-the-utility-of-oblique-tree-based-ensembles-for-the-classification-of-hyperspectral-data
#16
Nitesh Poona, Adriaan van Niekerk, Riyad Ismail
Ensemble classifiers are being widely used for the classification of spectroscopic data. In this regard, the random forest (RF) ensemble has been successfully applied in an array of applications, and has proven to be robust in handling high dimensional data. More recently, several variants of the traditional RF algorithm including rotation forest (rotF) and oblique random forest (oRF) have been applied to classifying high dimensional data. In this study we compare the traditional RF, rotF, and oRF (using three different splitting rules, i...
November 15, 2016: Sensors
https://www.readbyqxmd.com/read/27825317/epidemiology-and-outcome-of%C3%A2-clostridium-difficile%C3%A2-infections-in-patients-hospitalized-in-internal-medicine-%C3%A2-findings-from-the-nationwide-fadoi-practice-study
#17
Giorgio Cioni, Pierluigi Viale, Stefania Frasson, Francesco Cipollini, Francesco Menichetti, Nicola Petrosillo, Sergio Brunati, Patrizia Spigaglia, Chiara Vismara, Alessandra Bielli, Fabrizio Barbanti, Giancarlo Landini, Grazia Panigada, Gualberto Gussoni, Erminio Bonizzoni, Giovanni Pietro Gesu
BACKGROUND: Clostridium difficile (CD) is a leading cause of diarrhoea among hospitalized patients. The objective of this study was to evaluate the rate, the optimal diagnostic work-up, and outcome of CD infections (CDI) in Internal Medicine (IM) wards in Italy. METHODS: PRACTICE is an observational prospective study, involving 40 IM Units and evaluating all consecutive patients hospitalized during a 4-month period. CDI were defined in case of diarrhoea when both enzyme immunoassay for GDH, and test for A/B toxin were positive...
November 8, 2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27821079/comparison-of-dna-testing-strategies-in-monitoring-human-papillomavirus-infection-prevalence-through-simulation
#18
Carol Y Lin, Ling Li
BACKGROUND: HPV DNA diagnostic tests for epidemiology monitoring (research purpose) or cervical cancer screening (clinical purpose) have often been considered separately. Women with positive Linear Array (LA) polymerase chain reaction (PCR) research test results typically are neither informed nor referred for colposcopy. Recently, a sequential testing by using Hybrid Capture 2 (HC2) HPV clinical test as a triage before genotype by LA has been adopted for monitoring HPV infections. Also, HC2 has been reported as a more feasible screening approach for cervical cancer in low-resource countries...
November 7, 2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27795350/development-of-a-sensitive-and-specific-serological-assay-based-on-luminex-technology-for-detection-of-antibodies-to-zaire-ebola-virus
#19
Ahidjo Ayouba, Abdoulaye Touré, Christelle Butel, Alpha Kabinet Keita, Florian Binetruy, Mamadou S Sow, Vincent Foulongne, Eric Delaporte, Martine Peeters
The recent Zaire Ebola virus (EBOV) outbreak in West Africa illustrates clearly the need for additional studies with humans and animals to elucidate the ecology of Ebola viruses (EBVs). In this study, we developed a serological assay based on the Luminex technology. Nine recombinant proteins representing different viral regions (nucleoprotein [NP], 40-kDa viral protein [VP40], and glycoprotein [GP]) from four of the five EBV lineages were used. Samples from 94 survivors of the EBOV outbreak in Guinea and negative samples from 108 patients in France were used to calculate test performance for EBOV detection and cross-reaction with other Ebola virus lineages...
January 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/27780490/evaluation-of-the-limiting-antigen-avidity-eia-lag-in-people-who-inject-drugs-in-greece
#20
G K Nikolopoulos, A Katsoulidou, M Kantzanou, C Rokka, C Tsiara, V Sypsa, D Paraskevis, M Psichogiou, S Friedman, A Hatzakis
This analysis assessed the utility of the limiting antigen avidity assay (LAg). Samples of people who inject drugs (PWID) in Greece with documented duration of HIV-1 infection were tested by LAg. A LAg-normalized optical density (ODn) ⩽1·5 corresponds to a recency window period of 130 days. The proportion true recent (PTR) and proportion false recent (PFR) were estimated in 28 seroconverters and in 366 samples collected >6 months after HIV diagnosis, respectively. The association between LAg ODn and HIV RNA level was evaluated in 232 persons...
January 2017: Epidemiology and Infection
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