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https://www.readbyqxmd.com/read/29031156/hiv-misdiagnosis-a-root-cause-analysis-leading-to-improvements-in-hiv-diagnosis-and-patient-care
#1
Raynell Lang, Carmen Charlton, Brenda Beckthold, Kiana Kadivar, Stephanie Lavoie, Doug Caswell, Paul Levett, Greg Horsman, John Kim, M John Gill
BACKGROUND: Standard diagnostic testing for HIV infection has traditionally relied on a high sensitivity HIV antibody screening test using an enzyme-linked immunosorbent assay (ELISA) followed by a high specificity antibody confirmatory test such as a Western Blot. Recently several of the screening assays have been enhanced with an ability to identify p24 antigen thereby narrowing the diagnostic window. OBJECTIVES: To explore the implications of enhanced HIV screening methods that may be leading to HIV misdiagnoses...
October 9, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/29031022/fetal-analysis-with-invasive-method-fa-i-and-fetal-analysis-with-non-invasive-method-fa-ni-replacing-current-deceptively-imprecise-clinical-nomenclature
#2
Frank A Chervenak, Laurence B McCullough, Joachim Dudenhausen
There is a problem with the current nomenclature of prenatal evaluation. The current nomenclature of "prenatal testing" and "prenatal screening" - along with their subsets of "ultrasound testing," "ultrasound screening," "non-invasive prenatal testing," "non-invasive prenatal screening," and "prenatal diagnosis" - has become so imprecise that clinical misinterpretation and distortion of the informed consent process are increasingly difficult to avoid. To remedy this problem, we propose a new, precise nomenclature: "fetal analysis with invasive method" (FA-I) and "fetal analysis with non-invasive method," (FA-NI) using various techniques...
October 14, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/29029351/development-and-application-of-a-dual-rat-and-human-ahr-activation-assay
#3
Martin R Brown, Helen Garside, Emma Thompson, Saseela Atwal, Chloe Bean, Tony Goodall, Michael Sullivan, Mark J Graham
Significant prolonged AHR activation, classically exhibited following exposure to TCDD (dioxin), can cause a variety of undesirable toxicological effects. Novel pharmaceutical chemistries also have the potential to cause activation of AHR and consequent toxicities in pre-clinical species and man. Previous methods either employed relatively expensive and low throughput primary hepatocyte dosing with PCR endpoint, or low resolution overexpressing reporter gene assays. We have developed, validated and applied an in vitro microtitre plate imaging-based medium throughput screening assay for the assessment of endogenous species-specific AHR activation potential via detection of induction of the surrogate transcriptional target Cytochrome P450 CYP1A1...
September 18, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/29029256/multicentre-validation-of-4-well-azole-agar-plates-as-a-screening-method-for-detection-of-clinically-relevant-azole-resistant-aspergillus-fumigatus
#4
Maiken Cavling Arendrup, Paul E Verweij, Johan W Mouton, Katrien Lagrou, Joseph Meletiadis
Objectives: Azole-resistant Aspergillus fumigatus is emerging worldwide. Reference susceptibility testing methods are technically demanding and no validated commercial susceptibility tests for moulds currently exist. In this multicentre study a 4-well azole-containing screening agar method was evaluated using clinically relevant isolates. Methods: Forty WT and 39 cyp51A mutant A. fumigatus [G54 (n = 10), M220 (n = 10), TR34/L98H (n = 9) and TR46/Y121F/T289A (n = 10)] were tested individually and as simulated mixed samples (sampling 4 WT and 1 mutant colonies)...
October 4, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/29029114/carbapenem-resistant-citrobacter-spp-isolated-in-spain-from-2013-to-2015-produced-a-variety-of-carbapenemases-including-vim-1-oxa-48-kpc-2-ndm-1-and-vim-2
#5
David M Arana, Adriana Ortega, Eva González-Barberá, Noelia Lara, Verónica Bautista, Dolores Gómez-Ruíz, David Sáez, Sara Fernández-Romero, Belén Aracil, María Pérez-Vázquez, José Campos, Jesús Oteo
Objectives: There is little information about carbapenemase-producing (CP) Citrobacter spp. We studied the molecular epidemiology and microbiological features of CP Citrobacter spp. isolates collected in Spain (2013-15). Methods: In total, 119 isolates suspected of being CP by the EUCAST screening cut-off values were analysed. Carbapenemases and ESBLs were characterized using PCR and sequencing. The genetic relationship among Citrobacter freundii isolates was studied by PFGE...
September 27, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/29029086/hiv-prevention-costs-and-their-predictors-evidence-from-the-orphea-project-in-kenya
#6
Omar Galárraga, Richard G Wamai, Sandra G Sosa-Rubí, Mercy G Mugo, David Contreras-Loya, Sergio Bautista-Arredondo, Helen Nyakundi, Joseph K Wang'ombe
We estimate costs and their predictors for three HIV prevention interventions in Kenya: HIV testing and counselling (HTC), prevention of mother-to-child transmission (PMTCT) and voluntary medical male circumcision (VMMC). As part of the 'Optimizing the Response of Prevention: HIV Efficiency in Africa' (ORPHEA) project, we collected retrospective data from government and non-governmental health facilities for 2011-12. We used multi-stage sampling to determine a sample of health facilities by type, ownership, size and interventions offered totalling 144 sites in 78 health facilities in 33 districts across Kenya...
September 26, 2017: Health Policy and Planning
https://www.readbyqxmd.com/read/29028998/high-cryptococcal-antigen-titers-in-blood-are-predictive-of-subclinical-cryptococcal-meningitis-among-hiv-infected-patients
#7
Rachel M Wake, Erika Britz, Charlotte Sriruttan, Ivy Rukasha, Tanvier Omar, David C Spencer, Jeremy S Nel, Sello Mashamaite, Adeboye Adelekan, Tom M Chiller, Joseph N Jarvis, Thomas S Harrison, Nelesh P Govender
Background: High mortality rates among asymptomatic cryptococcal antigen (CrAg)-positive patients identified through CrAg screening, despite pre-emptive fluconazole, may be due to undiagnosed cryptococcal meningitis. Methods: Symptoms were reviewed in CrAg-positive patients identified through screening 19,233 individuals with CD4 cell counts < 100 cells/µL at 17 clinics and 3 hospitals in Johannesburg from September 2012 until September 2015, and 2 of these hospitals until June 2016...
October 5, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29028966/high-rates-of-subsequent-asymptomatic-stis-and-risky-sexual-behavior-in-patients-initially-presenting-with-primary-hiv-1-infection
#8
Dominique L Braun, Alex Marzel, Daniela Steffens, Peter W Schreiber, Christina Grube, Alexandra U Scherrer, Roger D Kouyos, Huldrych F Günthard
Introduction: Knowledge of the characteristics and risk factors of individuals with an asymptomatic sexually transmitted infection (STI) is essential for implementation of targeted STI screening strategies. Methods: Between June 2015 and January 2017 an STI screening was offered to all participants in the Zurich Primary HIV-1 Infection Study. Patients were tested for gonorrhea, chlamydia, syphilis, and hepatitis C virus. Determinants of STI prevalence and incidence were assessed using mixed-model logistic regression and survival analysis...
October 5, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29028965/tuberculin-skin-test-conversions-and-occupational-exposure-risk-in-us-healthcare-workers
#9
Claudia C Dobler, Wigdan H Farah, Mouaz Alsawas, Khaled Mohammed, Laura E Breeher, M Hassan Murad, Robin G Molella
Background: Health care workers (HCWs) undergo occupational tuberculosis (TB) screening at regular intervals. However, the risk of contracting TB at the workplace in a setting with a low background TB incidence is unclear. We aimed to evaluate the risk of tuberculin skin test (TST) conversion and the risk of occupational TB infection among HCWs in such a setting. Methods: We conducted a retrospective cohort study of employees of a large tertiary medical center in the US Midwest who had undergone TST screening during the study period January 1, 1998 to May 31, 2014...
October 4, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29028904/considerations-for-clinical-neuropsychological-evaluation-in-amyotrophic-lateral-sclerosis
#10
Susan C Woolley, Beth K Rush
The clinical neuropsychologist has the opportunity to be uniquely involved in the evaluation and treatment of individuals with amyotrophic lateral sclerosis (ALS). We review the current literature that defines cognitive and behavioral symptoms in ALS, including current knowledge of the neuropathological and genetic underpinning for these symptoms. There are unique considerations for clinical neuropsychological evaluation and clinical research in ALS and we highlight these in this review. Specifically, we shed light on special factors that contribute to our understanding of cognitive and behavioral impairment in ALS, including co-morbid symptoms, differential diagnosis, and considerations for longitudinal tracking of phenotypes...
September 28, 2017: Archives of Clinical Neuropsychology: the Official Journal of the National Academy of Neuropsychologists
https://www.readbyqxmd.com/read/29028884/protein-protein-interaction-specificity-is-captured-by-contact-preferences-and-interface-composition
#11
Francesca Nadalin, Alessandra Carbone
Motivation: Large-scale computational docking will be increasingly used in future years to discriminate protein-protein interactions at the residue resolution. Complete cross-docking experiments make in silico reconstruction of protein-protein interaction networks a feasible goal. They ask for efficient and accurate screening of the millions structural conformations issued by the calculations. Results: We propose CIPS (Combined Interface Propensity for decoy Scoring), a new pair potential combining interface composition with residue-residue contact preference...
September 22, 2017: Bioinformatics
https://www.readbyqxmd.com/read/29028864/predicting-cognitive-functioning-activities-of-daily-living-and-participation-6-months-after-mild-to-moderate-stroke
#12
Madison Bertolin, Ryan Van Patten, Taylor Greif, Robert Fucetola
Objective: Predicting neurocognitive and functional outcomes in stroke is an important clinical task, especially in rehabilitation settings. We assessed acute predictors of cognitive and functional outcomes 6 months after mild to moderate stroke. Methods: We conducted a retrospective analysis of acute clinical data and 6-month follow-up telephone interviews for 498 mild to moderate stroke patients. Predictors were sociodemographic variables, the National Institute of Health Stroke Scale (NIHSS), basic physical measures, the Mesulam Cancellation Test, the Short Blessed Test (SBT), Trails A/B, and the Boston Naming Test...
September 25, 2017: Archives of Clinical Neuropsychology: the Official Journal of the National Academy of Neuropsychologists
https://www.readbyqxmd.com/read/29028670/cord-blood-bisphenol-a-levels-and-reproductive-and-thyroid-hormone-levels-of-neonates-the-hokkaido-study-on-environment-and-children-s-health
#13
Machiko Minatoya, Seiko Sasaki, Atsuko Araki, Chihiro Miyashita, Sachiko Itoh, Jun Yamamoto, Toru Matsumura, Takahiko Mitsui, Kimihiko Moriya, Kazutoshi Cho, Keita Morioka, Hisanori Minakami, Nobuo Shinohara, Reiko Kishi
BACKGROUND: Bisphenol A (BPA) is widely used and BPA exposure is nearly ubiquitous in developed countries. While animal studies have indicated adverse health effects of prenatal BPA exposure including reproductive dysfunction and thyroid function disruption possibly in a sex-specific manner, findings from epidemiologic studies have not been enough to prove these adverse effects. Given very limited research on human, the aim of this study was to investigate associations between cord blood BPA levels and reproductive and thyroid hormone levels of neonates and whether associations differed by neonate sex...
October 2017: Epidemiology
https://www.readbyqxmd.com/read/29028528/inhibitors-of-yellow-fever-virus-replication-based-on-1-3-5-triphenyl-4-5-dihydropyrazole-scaffold-design-synthesis-and-antiviral-evaluation
#14
Rossella Fioravanti, Nicoletta Desideri, Antonio Carta, Elena Maria Atzori, Ilenia Delogu, Gabriella Collu, Roberta Loddo
By the antiviral screening of an in house library of pyrazoline compounds, 4-(3-(4-phenoxyphenyl)-5-phenyl-4,5-dihydro-1H-pyrazol-1-yl)benzenesulfonamide (5a) was identified as a promising hit compound for the development of anti- Yellow Fever Virus (YFV) agents. Structural optimization studies were focused on the development of 5a analogues which retain the potency as YFV inhibitors and show a reduced cytotoxicity. The synthesized 1-3,5-triphenyl-pyrazolines (4a-j, 5a-j, 6a-j) were evaluated in cell based assays for cytotoxicity and antiviral activity against representative viruses of two of the three genera of the Flaviviridae family, i...
September 28, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29027807/annals-express-biochemistry-of-the-menopause
#15
John W Honour
The life of a human female is characterised from teenage years by monthly menstruation which ceases (the menopause) typically between the age of 40 and 60 years. The potential for reproduction declines and ceases as the ovaries become depleted of follicles. A transition period in mid-life, for 2 to 10 years, when menstruation is less regular is called the peri-menopause. The menopause is associated with a significant decline in plasma concentrations of sex hormones, an increase in the concentrations of the gonadotrophins and changes in other hormones such as the inhibins...
January 1, 2017: Annals of Clinical Biochemistry
https://www.readbyqxmd.com/read/29027765/factor-xiii-deficiency-diagnosis-challenges-and-tools
#16
REVIEW
M Karimi, F Peyvandi, M Naderi, A Shapiro
Factor XIII deficiency (FXIIID) is a rare hereditary bleeding disorder arising from heterogeneous mutations, which can lead to life-threatening hemorrhage. The diagnosis of FXIIID is challenging due to normal standard coagulation assays requiring specific FXIII assays for diagnosis, which is especially difficult in developing countries. This report presents an overview of FXIIID diagnosis and laboratory methods and suggests an algorithm to improve diagnostic efficiency and prevent missed or delayed FXIIID diagnosis...
October 13, 2017: International Journal of Laboratory Hematology
https://www.readbyqxmd.com/read/29027495/monitoring-and-managing-antibiotic-resistance-in-refugee-children
#17
Helena C Maltezou, Dana Elhadad, Daniel Glikman
The past decade the Middle East and Southeastern Europe have witnessed an enormous movement of refugees due to the Syrian war and conflicts in Asia and Africa. Although carriage of and infections with multi-drug resistant (MDR) pathogens in refugees have been reported, pediatric data are scarce. Areas covered: MDR bacterial carriage and infections, and MDR-tuberculosis (TB) in refugee children from 2010. Expert commentary: High MDR carriage rates in refugee children are attributed to high pre-civil war MDR rates, war-damaged infrastructure and healthcare systems, and poor hygiene conditions...
October 13, 2017: Expert Review of Anti-infective Therapy
https://www.readbyqxmd.com/read/29027429/-a-new-phenethyl-alcohol-glycoside-from-orobanche-coerulescens
#18
Qiang-Rong Zhang
The constituents of the whole plant of Orobanche coerulescens were isolated and purified by using various column chromatographic techniques including D101, silica gel and ODS. The structures were identified by spectroscopic analyses including NMR and MS. A new phenylethanol glycoside was isolated from the whole plant of O. coerulescens, and was identified as 2-(3-methoxy-4-hydroxyphenyl)-ethanol-1-O- [(1→3)-O-α-L-rhamnopyranosyl-4, 6-O-di-feruloyl]-β-D-glucopyranoside, named as orobancheoside B. Through the antibacterial activity test, orobancheoside B was proved to have certain antibacterial activity, and be one of the main active components of O...
March 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29027422/-continual-improvement-of-quantitative-analytical-method-development-of-panax-notogineng-saponins-based-on-quality-by-design
#19
Sheng-Yun Dai, Bing Xu, Xin-Yuan Shi, Xiang Xu, Ying-Qiang Sun, Yan-Jiang Qiao
This study is aimed to propose a continual improvement strategy based on quality by design (QbD). An ultra high performance liquid chromatography (UPLC) method was developed to accomplish the method transformation from HPLC to UPLC of Panax notogineng saponins (PNS) and achieve the continual improvement of PNS based on QbD, for example. Plackett-Burman screening design and Box-Behnken optimization design were employed to further understand the relationship between the critical method parameters (CMPs) and critical method attributes (CMAs)...
March 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29027415/-application-of-quality-by-design-in-granulation-process-for-ginkgo-leaf-tablet-%C3%A2-%C3%AF-process-control-strategy-based-on-design-space
#20
Xiang-Long Cui, Bing Xu, Fei Sun, Sheng-Yun Dai, Xin-Yuan Shi, Yan-Jiang Qiao
In this paper, under the guidance of quality by design (QbD) concept, the control strategy of the high shear wet granulation process of the ginkgo leaf tablet based on the design space was established to improve the process controllability and product quality consistency. The median granule size (D50) and bulk density (Da) of granules were identified as critical quality attributes (CQAs) and potential critical process parameters (pCPPs) were determined by the failure modes and effect analysis (FMEA). The Plackeet-Burmann experimental design was used to screen pCPPs and the results demonstrated that the binder amount, the wet massing time and the wet mixing impeller speed were critical process parameters (CPPs)...
March 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
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