Results: 1197

Endoscopic prediction of tumor invasion depth in early gastric neoplasia: a prospective study in Peru

Introduction: Endoscopic resection is the first option treatment of early gastric cancer with invasion to mucosa or superficial submucosa, because the risk of nodal metastasis is negligible. Then the prediction of tumor invasion is cardinal. Objectives: Determine the accuracy of endoscopic prediction for...

Diagnosis of human herpes virus 1 and 2 (HHV-1 and HHV-2): use of a synthetic standard curve for absolute quantification by real time polymerase chain reaction

Mem. Inst. Oswaldo Cruz; 112 (3), 2017
The use of quantitative real time polymerase chain reaction (qPCR) for herpesvirus detection has improved the sensitivity and specificity of diagnosis, as it is able to detect shedding episodes in the absence of clinical lesions and diagnose clinical specimens that have low viral loads. With an aim to im...

Two-dimensional and three-dimensional assessment of the upper airway

Int. j. morphol; 35 (1), 2017
The aim of this study was to validate and correlate the two-dimensional (2D) with the three-dimensional (3D) measures of the upper airway assessment. Lateral cephalograms and cone beam CT of 100 adult subjects were used to perform a 2D and 3D assessment of the upper airway. Spearman correlation coefficie...

Impact of free thyroxine levels and other clinical factors on bare metal stent restenosis

ABSTRACT Objective Thyroid hormones have both direct and indirect effects on thermogenesis such as modulating vascular smooth muscle cell proliferation. However, the influence of more subtle changes in thyroid hormones on coronary atherosclerosis remains a matter of speculation. Smooth muscle cells pla...

Correlation of phenotypic tests with the presence of the blaZ gene for detection of beta-lactamase

Braz. j. microbiol; 48 (1), 2017
Abstract Staphylococcus aureus and Staphylococcus saprophyticus are the most common and most important staphylococcal species associated with urinary tract infections. The objective of the present study was to compare and to evaluate the accuracy of four phenotypic methods for the detection of beta-lacta...

Detection of Mycobacterium avium subsp. paratuberculosis in bovine milk from the state of Pernambuco, Brazil

Braz. j. microbiol; 48 (1), 2017
Abstract The aim of this study was to detect the IS900 region of Mycobacterium avium subsp. paratuberculosis (MAP) in bovine milk samples using real-time polymerase chain reaction (qPCR) and conventional PCR, and to study the agreement between these tests. A total of 121 bovine milk samples were collecte...

Performance of the dipstick screening test as a predictor of negative urine culture

Einstein (Säo Paulo); 15 (1), 2017
ABSTRACT Objective To investigate whether the urine dipstick screening test can be used to predict urine culture results. Methods A retrospective study conducted between January and December 2014 based on data from 8,587 patients with a medical order for urine dipstick test, urine sediment analysis a...

Particular characteristics of atopic eczema in tropical environments. The Tropical Environment Control for Chronic Eczema and Molecular Assessment (TECCEMA) cohort study

An. bras. dermatol; 92 (2), 2017
Abstract: Background: Atopic dermatitis is a prevalent health problem in the world. Allergic sensitization is an important risk factor, but the roles of other factors, inherent in tropic region, are unknown. Objective: A cohort study was designed in a tropical city to investigate molecular and environm...

Sensitivity, Specificity and Predictive Value of Heart Rate Variability Indices in Type 1 Diabetes Mellitus

Arq. bras. cardiol; 108 (3), 2017
Abstract Background: Heart rate variability (HRV) indices may detect autonomic changes with good diagnostic accuracy. Type diabetes mellitus (DM) individuals may have changes in autonomic modulation; however, studies of this nature in this population are still scarce. Objective: To compare HRV indices ...

New index for the diagnosis of liver fibrosis in Schistosomiasis mansoni

Arq. gastroenterol; 54 (1), 2017
ABSTRACT BACKGROUND Periportal fibrosis is the major pathological consequence of the Schistosoma mansoni infection. OBJECTIVE To evaluate the accuracy of serum markers and to construct an index to assess fibrosis. METHODS Patients (n=116) with schistosomiasis were evaluated by ultrasound scan and meas...