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[PMID]:28463753
[Au] Autor:Walker A; Bergmann M; Camdereli J; Kaiser R; Lübke N; Timm J
[Ad] Endereço:Institute of Virology, Heinrich-Heine-University, University Hospital, Düsseldorf, Germany.
[Ti] Título:A genotype independent, full-genome reverse-transcription protocol for HCV genotyping and resistance testing.
[So] Source:J Clin Virol;91:42-48, 2017 06.
[Is] ISSN:1873-5967
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: HCV treatment options and cure rates have tremendously increased in the last decade. Although a pan-genotype HCV treatment has recently been approved, most DAA therapies are still genotype specific. Resistance-associated variants (RAVs) can limit the efficacy of DAA therapy and are associated with increased risk for therapy failure. With the approval of DAA regimens that recommend resistance testing prior to therapy, correct assessment of the genotype and testing for viruses with RAVs is clinically relevant. However, genotyping and resistance testing is generally done in costly and laborious separate reactions. OBJECTIVE: The aim of the study was to establish a genotype-independent full-genome reverse transcription protocol to generate a template for both genotyping and resistance testing and to implement it into our routine diagnostic setup. STUDY DESIGN: The complete HCV genome was reverse transcribed with a pan-genotype primer binding at the 3'end of the viral RNA. This cDNA served as template for transcription of the genotyping amplicon in the core region as well as for the resistance testing of NS3, NS5A, and NS5B. RESULTS: With the established RT-protocol the HCV core region was successfully amplified and genotyped from 124 out of 125 (99.2%) HCV-positive samples. The amplification efficiency of RAV containing regions in NS3, NS5A, NS5B was 96.2%, 96.6% and 94.4%, respectively. CONCLUSIONS: We developed a method for HCV full-genome cDNA synthesis and implemented it into a routine diagnostic setup. This cDNA can be used as template for genotyping amplicons covering the core or NS5B region as well as for resistance testing amplicons in NS3, NS5A and NS5B.
[Mh] Termos MeSH primário: Farmacorresistência Viral/genética
Genoma Viral/genética
Técnicas de Genotipagem
Hepacivirus/efeitos dos fármacos
Hepacivirus/genética
Transcrição Reversa
[Mh] Termos MeSH secundário: Antivirais/farmacologia
Antivirais/uso terapêutico
DNA Complementar
Genoma Viral/efeitos dos fármacos
Genótipo
Hepacivirus/isolamento & purificação
Hepatite C Crônica/sangue
Hepatite C Crônica/diagnóstico
Hepatite C Crônica/tratamento farmacológico
Seres Humanos
Reação em Cadeia da Polimerase
RNA Viral/sangue
RNA Viral/genética
Sensibilidade e Especificidade
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Antiviral Agents); 0 (DNA, Complementary); 0 (RNA, Viral)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180311
[Lr] Data última revisão:
180311
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170503
[St] Status:MEDLINE


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[PMID]:28461133
[Au] Autor:Chen DJ; Yao JD
[Ad] Endereço:Division of Clinical Microbiology, Department of Laboratory Medicine and Pathology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA. Electronic address: dchen@uwhealth.org.
[Ti] Título:Comparison of turnaround time and total cost of HIV testing before and after implementation of the 2014 CDC/APHL Laboratory Testing Algorithm for diagnosis of HIV infection.
[So] Source:J Clin Virol;91:69-72, 2017 06.
[Is] ISSN:1873-5967
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Updated recommendations for HIV diagnostic laboratory testing published by the Centers for Disease Control and Prevention and the Association of Public Health Laboratories incorporate 4th generation HIV immunoassays, which are capable of identifying HIV infection prior to seroconversion. OBJECTIVES: The purpose of this study was to compare turnaround time and cost between 3rd and 4th generation HIV immunoassay-based testing algorithms for initially reactive results. STUDY DESIGN: The clinical microbiology laboratory database at Mayo Clinic, Rochester, MN was queried for 3rd generation (from November 2012 to May 2014) and 4th generation (from May 2014 to November 2015) HIV immunoassay results. All results from downstream supplemental testing were recorded. Turnaround time (defined as the time of initial sample receipt in the laboratory to the time the final supplemental test in the algorithm was resulted) and cost (based on 2016 Medicare reimbursement rates) were assessed. RESULTS: A total of 76,454 and 78,998 initial tests were performed during the study period using the 3rd generation and 4th generation HIV immunoassays, respectively. There were 516 (0.7%) and 581 (0.7%) total initially reactive results, respectively. Of these, 304 (58.9%) and 457 (78.7%) were positive by supplemental testing. There were 10 (0.01%) cases of acute HIV infection identified with the 4th generation algorithm. The most frequent tests performed to confirm an HIV-positive case using the 3rd generation algorithm, which were reactive initial immunoassay and positive HIV-1 Western blot, took a median time of 1.1 days to complete at a cost of $45.00. In contrast, the most frequent tests performed to confirm an HIV-positive case using the 4th generation algorithm, which included a reactive initial immunoassay and positive HIV-1/-2 antibody differentiation immunoassay for HIV-1, took a median time of 0.4 days and cost $63.25. Overall median turnaround time was 2.2 and 1.5 days, and overall median cost was $63.90 and $72.50 for 3rd and 4th generation algorithms, respectively. CONCLUSIONS: Both 3rd and 4th generation HIV immunoassays had similar total numbers of tests performed and positivity rates during the study period. A greater proportion of reactive 4th generation immunoassays were confirmed to be positive, and the 4th generation algorithm identified several cases of acute HIV infection that would have been missed by the 3rd generation algorithm. The 4th generation algorithm had a more rapid turnaround time but higher cost for confirmed positive HIV infections and overall, compared to the 3rd generation algorithm.
[Mh] Termos MeSH primário: Sorodiagnóstico da AIDS
Algoritmos
Infecções por HIV/diagnóstico
Imunoensaio
[Mh] Termos MeSH secundário: Sorodiagnóstico da AIDS/economia
Centers for Disease Control and Prevention (U.S.)
Custos e Análise de Custo
Anticorpos Anti-HIV/sangue
Infecções por HIV/economia
Infecções por HIV/virologia
HIV-1/genética
HIV-1/imunologia
HIV-2/genética
HIV-2/imunologia
Seres Humanos
Imunoensaio/economia
Imunoensaio/métodos
Programas de Rastreamento/economia
Programas de Rastreamento/legislação & jurisprudência
Programas de Rastreamento/métodos
Técnicas de Amplificação de Ácido Nucleico/economia
Técnicas de Amplificação de Ácido Nucleico/métodos
Sensibilidade e Especificidade
Estados Unidos
Adulto Jovem
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (HIV Antibodies)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180311
[Lr] Data última revisão:
180311
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170503
[St] Status:MEDLINE


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[PMID]:29346431
[Au] Autor:Pollack TM; Duong HT; Truong PT; Pham TT; Do CD; Colby D
[Ad] Endereço:The Partnership for Health Advancement in Vietnam, Beth Israel Deaconess Medical Center, Hanoi, Vietnam.
[Ti] Título:Sensitivity and specificity of two dried blood spot methods for HIV-1 viral load monitoring among patients in Hanoi, Vietnam.
[So] Source:PLoS One;13(1):e0191411, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The use of dried blood spot (DBS) specimens for HIV viral load (VL) monitoring is recommended to support the roll-out of routine VL monitoring in low and middle income countries (LMICs). To better understand the use of DBS for VL monitoring, we evaluated two DBS testing methods, Roche TaqMan® Free Virus Evolution protocol (DBS-FVE) and Roche TaqMan® SPEX protocol (DBS-SPEX)) in patients receiving ART at an HIV clinic in Hanoi, Vietnam. Sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) were calculated for each DBS testing method at the thresholds of 1000 and 5000 copies/ml compared to plasma VL. At a threshold of 1000 copies/ml, sensitivity, specificity, PPV and NPV of the DBS-SPEX method were 98.8% (95% CI: 93.3%-100%), 74.3% (95% CI: 70.8%-77.5%), 31.5% (95% CI: 25.8%-37.6%), and 99.8% (95% CI: 98.9%-100%), respectively. Increasing the VL threshold value to 5000 copies/ml improved specificity (97.9% CI: 96.6%-98.9%) and PPV (83.9% CI: 74.5%-90.9%). Using the DBS-FVE method, at the threshold of 1000 copies/ml and with a correction factor of +0.3 log copies/ml, sensitivity was 95.1% (87.8%-98.6%) and specificity was 98.8% (97.7%-99.5%). Sensitivity decreased at the threshold of 5000 copies/ml (65.8%, 95% CI: 54.3%-76.1%). With a correction factor of +0.7 log copies/ml, the sensitivity was 96.3% (89.6%-99.2%) and specificity was 98.2% (96.9%-99.1%) at the threshold of 1000 copies/ml. We found that the Roche DBS-FVE method, with a +0.7 log copies/ml correction factor, performed well with sensitivity and specificity greater than 96% at a VL threshold of 1000 copies/m. These findings add to the growing body of evidence supporting the use of DBS VL testing for ART monitoring. Future research should evaluate the association between VL results by DBS and clinical outcome measures such as HIV drug resistance, morbidity, and mortality.
[Mh] Termos MeSH primário: Infecções por HIV/sangue
Monitorização Fisiológica/métodos
Carga Viral
[Mh] Termos MeSH secundário: Adolescente
Adulto
Idoso
Feminino
Infecções por HIV/virologia
HIV-1/isolamento & purificação
Seres Humanos
Masculino
Meia-Idade
Sensibilidade e Especificidade
Vietnã
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180309
[Lr] Data última revisão:
180309
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180119
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0191411


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[PMID]:29287886
[Au] Autor:Samdani S; Jain A; Meena V; Meena CB
[Ad] Endereço:Department of Otorhinolaryngology (ENT), Sawai Man Singh Medical College and Attached Group of Hospitals, Jaipur, Rajasthan, India.
[Ti] Título:Cardiac complications in diphtheria and predictors of outcomes.
[So] Source:Int J Pediatr Otorhinolaryngol;104:76-78, 2018 Jan.
[Is] ISSN:1872-8464
[Cp] País de publicação:Ireland
[La] Idioma:eng
[Ab] Resumo:OBJECTIVE: To study the cardiac complications in diphtheria patients and to study the predictors of outcomes. STUDY DESIGN: Single centre prospective analysis of cardiac complications in diphtheria patients. RESULTS: In this study, there were 60 patients diagnosed with diphtheria with ECG changes. The ECG changes seen were sinus tachycardia (68.3%), T wave inversion (20%), ST segment depression (13.3%), right bundle branch block (5%), multiple atrial ectopics (3.3%). The case fatality rate in our study was 25% (15 patients). High CPK-MB, myoglobulin and cardiac troponin levels were associated with cardiac mortality. In our study, cardiac troponin T had the highest sensitivity (80%) and CK-MB had the highest specificity (95.56%). CONCLUSION: Cardiac involvement is a common complication of infection with C. diphtheria and is associated with high mortality. As diphtheria can be prevented by adequate vaccination, efforts should be maximized for high vaccine coverage with booster doses.
[Mh] Termos MeSH primário: Difteria/complicações
Cardiopatias/etiologia
[Mh] Termos MeSH secundário: Adolescente
Biomarcadores
Criança
Pré-Escolar
Creatina Quinase
Eletrocardiografia
Feminino
Cardiopatias/epidemiologia
Seres Humanos
Lactente
Masculino
Estudos Prospectivos
Sensibilidade e Especificidade
Troponina T
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Biomarkers); 0 (Troponin T); EC 2.7.3.2 (Creatine Kinase)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180309
[Lr] Data última revisão:
180309
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171231
[St] Status:MEDLINE


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[PMID]:29214788
[Au] Autor:Bae HW; Lee SY; Kim S; Park CK; Lee K; Kim CY; Seong GJ
[Ad] Endereço:Department of Ophthalmology, Severance Hospital, Institute of Vision Research, Yonsei University College of Medicine, Seoul, Korea.
[Ti] Título:Asymmetry of Peak Thicknesses between the Superior and Inferior Retinal Nerve Fiber Layers for Early Glaucoma Detection: A Simple Screening Method.
[So] Source:Yonsei Med J;59(1):135-140, 2018 Jan.
[Is] ISSN:1976-2437
[Cp] País de publicação:Korea (South)
[La] Idioma:eng
[Ab] Resumo:PURPOSE: To assess whether the asymmetry in the peripapillary retinal nerve fiber layer (pRNFL) thickness between superior and inferior hemispheres on optical coherence tomography (OCT) is useful for early detection of glaucoma. MATERIALS AND METHODS: The patient population consisted of Training set (a total of 60 subjects with early glaucoma and 59 normal subjects) and Validation set (30 subjects with early glaucoma and 30 normal subjects). Two kinds of ratios were employed to measure the asymmetry between the superior and inferior pRNFL thickness using OCT. One was the ratio of the superior to inferior peak thicknesses (peak pRNFL thickness ratio; PTR), and the other was the ratio of the superior to inferior average thickness (average pRNFL thickness ratio; ATR). The diagnostic abilities of the PTR and ATR were compared to the color code classification in OCT. Using the optimal cut-off values of the PTR and ATR obtained from the Training set, the two ratios were independently validated for diagnostic capability. RESULTS: For the Training set, the sensitivities/specificities of the PTR, ATR, quadrants color code classification, and clock-hour color code classification were 81.7%/93.2%, 71.7%/74.6%, 75.0%/93.2%, and 75.0%/79.7%, respectively. The PTR showed a better diagnostic performance for early glaucoma detection than the ATR and the clock-hour color code classification in terms of areas under the receiver operating characteristic curves (AUCs) (0.898, 0.765, and 0.773, respectively). For the Validation set, the PTR also showed the best sensitivity and AUC. CONCLUSION: The PTR is a simple method with considerable diagnostic ability for early glaucoma detection. It can, therefore, be widely used as a new screening method for early glaucoma.
[Mh] Termos MeSH primário: Diagnóstico Precoce
Glaucoma/diagnóstico
Programas de Rastreamento/métodos
Fibras Nervosas/patologia
Retina/patologia
[Mh] Termos MeSH secundário: Área Sob a Curva
Cor
Feminino
Seres Humanos
Masculino
Meia-Idade
Curva ROC
Reprodutibilidade dos Testes
Células Ganglionares da Retina
Sensibilidade e Especificidade
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180309
[Lr] Data última revisão:
180309
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171208
[St] Status:MEDLINE
[do] DOI:10.3349/ymj.2018.59.1.135


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[PMID]:28742247
[Au] Autor:Zhiwei W; Yuan J; Yihui Y; Xin H; Jingtao C; Lei S; Yongjian D
[Ti] Título:Ventana immunohistochemistry assay for anaplastic lymphoma kinase gene rearrangement detection in patients with non-small cell lung cancer: A meta-analysis.
[So] Source:Thorac Cancer;8(5):471-476, 2017 Sep.
[Is] ISSN:1759-7714
[Cp] País de publicação:Singapore
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: The aim of this study was to evaluate the diagnostic value of Ventana immunohistochemistry (IHC) assay for anaplastic lymphoma kinase (ALK) gene rearrangement screening in patients with non-small cell lung cancer (NSCLC). METHODS: Open published studies that reported the diagnostic performance of Ventana IHC assay for ALK gene rearrangement detection in NSCLC patients were extracted from PubMed, Embase, Google scholar, Wanfang, and China National Knowledge Infrastructure. The general information and number of true positive (tp), false positive (fp), false negative (fn), and true negative (tn) cases identified by Ventana IHC assay were extracted. The diagnostic sensitivity, specificity, positive likelihood ratio (+lr), negative likelihood ratio (-lr), diagnostic odds ratio (dor) and the summary receiver operating characteristic (ROC) curve were calculated using Stata 11.0 software. RESULTS: Ten studies, including 240 ALK positive and 1973 ALK negative NSCLC patients were included in this meta-analysis. The pooled diagnostic sensitivity, specificity, +lr, -lr, and dor were 0.94 (95% confidence interval [CI] 0.85-0.98), 1.00 (95% CI 0.99-1.00), 859.61 (95% CI 60.81-1200.00), 0.06 (95% CI 0.03-0.16), and 1400.00 (95% CI 813.29-23 000.00), respectively. The area under the ROC curve was 0.996 for Ventana IHC assay in detecting ALK gene rearrangement in NSCLC patients. CONCLUSION: The sensitivity and specificity of Ventana IHC assay for the detection of ALK gene rearrangement were high, thus Ventana IHC could substitute fluorescence in situ hybridization for the screening of ALK+ NSCLC patients.
[Mh] Termos MeSH primário: Carcinoma Pulmonar de Células não Pequenas/metabolismo
Rearranjo Gênico
Neoplasias Pulmonares/metabolismo
Receptores Proteína Tirosina Quinases/metabolismo
[Mh] Termos MeSH secundário: Carcinoma Pulmonar de Células não Pequenas/genética
Seres Humanos
Imuno-Histoquímica/métodos
Neoplasias Pulmonares/genética
Proteínas de Fusão Oncogênicas/metabolismo
Curva ROC
Receptores Proteína Tirosina Quinases/genética
Sensibilidade e Especificidade
[Pt] Tipo de publicação:JOURNAL ARTICLE; META-ANALYSIS
[Nm] Nome de substância:
0 (Oncogene Proteins, Fusion); EC 2.7.10.1 (Receptor Protein-Tyrosine Kinases); EC 2.7.10.1 (anaplastic lymphoma kinase)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180309
[Lr] Data última revisão:
180309
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170726
[St] Status:MEDLINE
[do] DOI:10.1111/1759-7714.12468


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[PMID]:28460835
[Au] Autor:Madularu D; Kumaragamage C; Mathieu AP; Kulkarni P; Rajah MN; Gratton AP; Near J
[Ad] Endereço:Department of Psychiatry, Faculty of Medicine, McGill University, Montreal, QC, Canada; Brain Imaging Centre, Douglas Mental Health University Institute, McGill University, Montreal, QC, Canada. Electronic address: dan.madularu@gmail.com.
[Ti] Título:A chronic in situ coil system adapted for intracerebral stimulation during MRI in rats.
[So] Source:J Neurosci Methods;284:85-95, 2017 Jun 01.
[Is] ISSN:1872-678X
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: We describe the fabrication and performance of a chronic in situ coil system designed to allow focal brain stimulation in rats while acquiring functional MRI data. NEW METHOD: An implantable receive-only surface radiofrequency coil (iCoil) was designed to be fitted subcutaneously, directly onto to the rat skull surface during the intracerebral cannulation procedure. The coil is fixed in place using acrylic dental cement anchored to four screws threaded into the skull. To demonstrate the use of this coil system in situ, whole-brain functional MRI scans were acquired during various stimuli, including intracranial microinfusions of bicuculline and morphine in the prefrontal cortex and ventral tegmental area, respectively. RESULTS/COMPARISON TO OTHER METHODS: SNR performance of the iCoil was superior to three commercially-available coils, in some instances by a factor of two. Widespread BOLD activation was observed in response to bicuculline and morphine microinfusions. CONCLUSION: A new approach was demonstrated for high-SNR MR imaging of the brain in rats with intracranial implants using an implantable surface coil. This approach enables mapping the functional response to highly targeted stimuli such as intracranial microinfusions.
[Mh] Termos MeSH primário: Encéfalo/diagnóstico por imagem
Estimulação Encefálica Profunda/instrumentação
Estimulação Encefálica Profunda/veterinária
Bombas de Infusão Implantáveis
Imagem por Ressonância Magnética/instrumentação
Imagem por Ressonância Magnética/veterinária
Microinjeções/veterinária
[Mh] Termos MeSH secundário: Animais
Desenho de Equipamento
Análise de Falha de Equipamento
Masculino
Microinjeções/instrumentação
Próteses e Implantes
Ratos
Ratos Long-Evans
Reprodutibilidade dos Testes
Sensibilidade e Especificidade
Transdutores/veterinária
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180309
[Lr] Data última revisão:
180309
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170503
[St] Status:MEDLINE


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[PMID]:28456430
[Au] Autor:Seiringer P; Pritsch M; Flores-Chavez M; Marchisio E; Helfrich K; Mengele C; Hohnerlein S; Bretzel G; Löscher T; Hoelscher M; Berens-Riha N
[Ad] Endereço:Division of Infectious Diseases and Tropical Medicine, Medical Center of the University of Munich (LMU), Leopoldstr. 5, 80802 Munich, Germany; German Center for Infection Research (DZIF), partner site Munich, Munich, Germany. Electronic address: peter.seiringer@lrz.uni-muenchen.de.
[Ti] Título:Comparison of four PCR methods for efficient detection of Trypanosoma cruzi in routine diagnostics.
[So] Source:Diagn Microbiol Infect Dis;88(3):225-232, 2017 Jul.
[Is] ISSN:1879-0070
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Due to increased migration, Chagas disease has become an international health problem. Reliable diagnosis of chronically infected people is crucial for prevention of non-vectorial transmission as well as treatment. This study compared four distinct PCR methods for detection of Trypanosoma cruzi DNA for the use in well-equipped routine diagnostic laboratories. DNA was extracted of T. cruzi-positive and negative patients' blood samples and cultured T. cruzi, T. rangeli as well as Leishmania spp. One conventional and two real-time PCR methods targeting a repetitive Sat-DNA sequence as well as one conventional PCR method targeting the variable region of the kDNA minicircle were compared for sensitivity, intra- and interassay precision, limit of detection, specificity and cross-reactivity. Considering the performance, costs and ease of use, an algorithm for PCR-diagnosis of patients with a positive serology for T. cruzi antibodies was developed.
[Mh] Termos MeSH primário: Doença de Chagas/diagnóstico
Técnicas de Diagnóstico Molecular/métodos
Reação em Cadeia da Polimerase/métodos
Trypanosoma cruzi/isolamento & purificação
[Mh] Termos MeSH secundário: Adolescente
Adulto
Sangue/parasitologia
Pré-Escolar
Feminino
Seres Humanos
Masculino
Meia-Idade
Sensibilidade e Especificidade
Trypanosoma cruzi/genética
Adulto Jovem
[Pt] Tipo de publicação:COMPARATIVE STUDY; EVALUATION STUDIES; JOURNAL ARTICLE
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180309
[Lr] Data última revisão:
180309
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170501
[St] Status:MEDLINE


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[PMID]:28455103
[Au] Autor:Williams CAL; Panerai RB; Robinson TG; Haunton VJ
[Ad] Endereço:University of Leicester, Department of Cardiovascular Sciences, Leicester, UK. Electronic address: calw1@student.le.ac.uk.
[Ti] Título:Transcranial Doppler ultrasonography in the assessment of neurovascular coupling responses to cognitive examination in healthy controls: A feasibility study.
[So] Source:J Neurosci Methods;284:57-62, 2017 Jun 01.
[Is] ISSN:1872-678X
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: We tested the hypothesis that paradigms from the Addenbrooke's Cognitive Examination (ACE-III), including those that had not been studied using TCD previously (novel) versus those which had been (established), would elicit changes in CBF velocity (CBFv). NEW METHOD: Healthy subjects were studied with bilateral transcranial Doppler (TCD), beat-to-beat blood pressure (Finapres), continuous electrocardiogram (ECG), and end-tidal CO (nasal capnography). After a 5-min baseline recording, cognitive tests of the ACE-III were presented to subjects, covering attention (SUB7, subtracting 7 from 100 sequentially), language (REP, repeating words and phrases), fluency (N-P, naming words), visuospatial (DRAW, clock-drawing), and memory (MEM, recalling name and address). An event marker noted question timing. RESULTS: Forty bilateral data sets were obtained (13 males, 37 right-hand dominant) with a median age of 31 years (IQR 22-52). Population normalized mean peak CBFv% in the dominant and non-dominant hemispheres, respectively, were: SUB7 (11.3±9.6%, 11.2±10.5%), N-P (12.7±11.7%, 11.5±12.0%), REP (12.9±11.7%, 11.6±11.6%), DRAW (13.3±11.7%, 13.2±15.4%) and MEM (13.2±10.3%, 12.0±10.1%). There was a significant difference between the dominant and non-dominant CBFv responses (p<0.008), but no difference between the amplitude of responses. COMPARISON WITH EXISTING METHODS: For established paradigms, our results are in excellent agreement to what has been found previously in the middle cerebral artery. CONCLUSIONS: Cognitive paradigms derived from the ACE-III led to significant lateralised changes in CBFv that were not distinct for novel paradigms. Further work is needed to assess the potential of paradigms to improve the interpretation of cognitive assessments in patients at risk of mild cognitive impairment.
[Mh] Termos MeSH primário: Velocidade do Fluxo Sanguíneo/fisiologia
Encéfalo/diagnóstico por imagem
Encéfalo/fisiologia
Circulação Cerebrovascular/fisiologia
Cognição/fisiologia
Acoplamento Neurovascular/fisiologia
Ultrassonografia Doppler Transcraniana/métodos
[Mh] Termos MeSH secundário: Adulto
Mapeamento Encefálico/métodos
Estudos de Viabilidade
Feminino
Seres Humanos
Interpretação de Imagem Assistida por Computador/métodos
Masculino
Projetos Piloto
Reprodutibilidade dos Testes
Sensibilidade e Especificidade
[Pt] Tipo de publicação:EVALUATION STUDIES; JOURNAL ARTICLE
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180309
[Lr] Data última revisão:
180309
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170430
[St] Status:MEDLINE


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[PMID]:29458688
[Au] Autor:Mitchell SL; Chang YC; Feemster K; Cárdenas AM
[Ad] Endereço:1​Clinical Microbiology Laboratory, Children's Hospital of Pittsburgh of UPMC and Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
[Ti] Título:Implementation of a rapid influenza A/B and RSV direct molecular assay improves emergency department oseltamivir use in paediatric patients.
[So] Source:J Med Microbiol;67(3):358-363, 2018 Mar.
[Is] ISSN:1473-5644
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:PURPOSE: Influenza A virus (FluA), influenza B virus (FluB) and respiratory syncytial virus (RSV) illnesses increase hospitalizations during seasonal epidemics. METHODOLOGY: To determine the utility of the Simplexa FluA/B & RSV Direct Assay (Direct Flu/RSV) and its impact on oseltamivir use, we offered this assay to emergency department (ED) patients with influenza-like illness. RESULTS: Utilization of the Direct Flu/RSV provided a turnaround time (TAT) of 2 hours. Compared to the flu season prior to implementation of the Direct Flu/RSV, clinicians were more likely to prescribe 5 days of oseltamivir therapy for Direct Flu/RSV-positive patients in comparison to those with a negative test. CONCLUSIONS: Use of Direct Flu/RSV provides results rapidly, which leads to more appropriate use of oseltamivir. The ease of use of this assay and quick TAT allows for prompt decision-making, which is essential for patient care and effective disease control during the influenza season.
[Mh] Termos MeSH primário: Antivirais/uso terapêutico
Influenza Humana/diagnóstico
Influenza Humana/tratamento farmacológico
Técnicas de Diagnóstico Molecular
Oseltamivir/uso terapêutico
Infecções por Vírus Respiratório Sincicial/diagnóstico
[Mh] Termos MeSH secundário: Antivirais/administração & dosagem
Criança
Saúde da Criança
Pré-Escolar
Serviço Hospitalar de Emergência
Feminino
Seres Humanos
Vírus da Influenza A/genética
Vírus da Influenza A/isolamento & purificação
Vírus da Influenza B/genética
Vírus da Influenza B/isolamento & purificação
Influenza Humana/virologia
Masculino
Nasofaringe/virologia
Oseltamivir/administração & dosagem
Kit de Reagentes para Diagnóstico
Reação em Cadeia da Polimerase em Tempo Real
Infecções por Vírus Respiratório Sincicial/virologia
Vírus Sinciciais Respiratórios/genética
Vírus Sinciciais Respiratórios/isolamento & purificação
Sensibilidade e Especificidade
Resultado do Tratamento
Viroses/diagnóstico
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Antiviral Agents); 0 (Reagent Kits, Diagnostic); 20O93L6F9H (Oseltamivir)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180308
[Lr] Data última revisão:
180308
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180221
[St] Status:MEDLINE
[do] DOI:10.1099/jmm.0.000676



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