cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.14286277.v1
title: Influence of expiration date on analytical performance of rapid tests for HIV diagnosis

description: ABSTRACT Introduction: Rapid tests (RTs) are ideal to provide laboratorial results within 30 minutes in a variety of situations and locations, even in underserved communities. Like any other laboratory input, they can only be used within the expiration date. Objective: The aim of this study was to compare the analytical performance of the RT Interkit HIV 1 and 2® (Interteck Katal - Belo Horizonte, Brazil) at two different times, two years before and one week before the expiration date. Material and methods: Two hundred serum samples were used, from individuals over 18 months of age, of both sexes, previously tested by electrochemiluminescence and Western Blot for HIV infection, distributed in two groups: reactive (n = 100) and non-reactive (n = 100). Results: The RT showed similar and satisfactory diagnostic accuracy in the two analyzed moments, with no statistical difference. Conclusion: The RT Interkit HIV 1 and 2® showed stable analytical performance both at the beginning and the end of its validity term.
DOI: 10.6084/m9.figshare.14286276.v1
title: Mucoepidermoid carcinoma of the retromolar region: case report

description: ABSTRACT The present study aimed to report a case of mucoepidermoid carcinoma (MEC), focusing on its clinical-pathological characteristics. At intraoral clinical examination, a nodular lesion was observed in the right pterygomandibular raphe region, with three years of evolution. An incisional biopsy was performed, and the diagnostic hypotheses of salivary gland injury and sialadenitis were considered. Histopathologically, a malignant neoplastic process characterized by the proliferation of epidermoid, intermediate and mucosal cells was observed. The histopathological diagnosis of MEC was emitted. The present case praises the importance of early diagnosis and correct management of this disease, providing a better prognosis for these patients.
DOI: 10.6084/m9.figshare.14286273.v1
title: Evaluation of PSA requests in men under 40 years of age

description: ABSTRACT Objectives: To evaluate the frequency of PSA requests in men under age 40 years; and to observe the possible influence of medical specialty of the requesting physician. Material and method: This is an observational, cross-sectional study using the database of a national clinical laboratory on PSA requests from October 1, 1997 until December 31, 2016. Descriptive statistics were used. The work was approved by the Ethics Committee of our institution. Results: 2,514,375 PSA requests were evaluated, 158,399 (6.3%) in men younger than 40 years old. These percentages did not vary significantly when observed over time (1998-2016). The prevalence of requests for patients under 40 years of age, was 18.2% among general practitioners; 16.5% among cardiologists, 8.4% among geriatricians and 6.8% among urologists. Conclusion: There is a very high frequency of PSA requests in men with low probability of benefiting from the test. It is necessary to invest in the dissemination of best practices related to prostate cancer screening, especially among clinicians and cardiologists.
DOI: 10.6084/m9.figshare.14286272.v1
title: Granular cell tumor in female neonate: a case report

description: ABSTRACT The granular cell tumor (GCT) is a neoplasm of connective tissue which rarely occurs in children. This case report aims to describe and discuss the presentation of this tumor in a female neonate. Compared to previous literature, the case report demonstrated a rare form of presentation of this tumor in an unusual age group.
DOI: 10.6084/m9.figshare.14286270.v1
title: Template for the laboratory’s report of 25-hydroxyvitamin D: recommendations form the Brazilian Society of Clinical Pathology/Laboratory Medicine (SBPC/ML) and the Brazilian Society of Endocrinology and Metabolism (SBEM)

description: ABSTRACT The Brazilian Society of Clinical Pathology/Laboratory Medicine (SBPC/ML) and the Brazilian Society of Endocrinology and Metabolism (SBEM) recommend a new template for laboratory reports of 25-hydroxyvitamin D: deficiency &lt; 20 ng/ml; normal values for the general population between 20-60 ng/ml; ideal values for at-risk population between 30-60 ng/ml; e risk of toxicity &gt; 100 ng/ml.
DOI: 10.6084/m9.figshare.14286265.v1
title: Composition and distribution of fishes from the Perequê-Açu river basin, Paraty, Rio de Janeiro, Southeastern Brazil

description: Abstract The large number of less-known coastal drainages in the Atlantic Forest still represents an important gap in the knowledge of ichthyofauna. It is evaluated the taxonomic diversity, frequency and constancy of occurrence, and the distribution of species in the various segments of the Perequê-Açu river basin, state of Rio de Janeiro, Brazil. Twelve sampling campaigns resulted in 13,423 individuals, belonging to seven orders, 10 families, 21 genera, and 23 native species. Cyprinodontiformes and Siluriformes represented about 87.2% of the total abundance, mainly due to the contribution of Phalloceros anisophallos and Schizolecis guntheri, which account for 63.2% of the total sampled individuals. The analysis of constancy of occurrence reveals that 78.3% of the drainage species are residents, with approximately 93% of the residents of the Carrasquinho River sub-basin. The Sertões River sub-basin had the largest number of species in total: 18. The rarefaction curve did not reach an asymptote, although Chao 2 and bootstrap estimate the richness of 23.9 species and 23.7 species, respectively. The results of PERMANOVA, PCoA, and SIMPER indicate that the fish composition along the catchment is not homogeneous. The conservation status of species is also discussed, regionally, nationally, and globally.
DOI: 10.6084/m9.figshare.14286264.v1
title: False-negative result in molecular diagnosis of SARS-CoV-2 in samples with amplification inhibitors

description: ABSTRACT Introduction: Although reverse transcription-polymerase chain reaction (rRT-PCR) is the gold standard method for detecting severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), some factors, such as the presence of amplification inhibitors, lead to false-negative results. Objective: Here we describe the differences between rRT-PCR results for SARS-CoV-2 infection in normal and diluted samples, simulating the need for dilution due to the presence of amplification inhibitors. Material and method: Viral ribonucleic acid (RNA) from samples of nasopharyngeal swabs from 20 patients previously detected as “Negative” and 21 patients detected as “Positive” for SARS-CoV-2 was performed with the EasyExtract DNA-RNA kit (Interprise®). The rRT-PCR was performed with the OneStep/COVID-19 kit (IBMP), with normal and diluted (80 µl of H2O RNAse free) samples, totaling 82 tests. Results: The results indicate that there is an average variation (a &lt; 0.05) delaying the Cq between the results of amplification of the internal control (IC), N gene (NG), and ORF1ab (OF), 1.811 Cq, 3.840 Cq, and 3.842 Cq, respectively. Discussion: The extraction kit does not completely purify the inhibitor compounds; therefore, no amplified product result may occur. In this study, we obtained a 19.04% false-negative diagnosis after sample dilution; this process reduces the efficiency of rRT-PCR to 29.8% in detecting SARS-CoV-2. Conclusion: Knowing the rRT-PCR standards of diluted samples can assist in the identification of false-negative cases and, consequently, avoid incorrect diagnosis.
DOI: 10.6084/m9.figshare.14286261.v1
title: Performance analysis of commercial rapid tests for serum troponin detection

description: ABSTRACT Introduction: Rapid tests represent an important diagnostic tool, providing results in a short period of time and eliminating the use of large automated equipment. Objective: To evaluate the performance of five rapid test kits for troponin I detection in serum. Materials and methods: Samples from 100 patients with suspected acute myocardial infarction (AMI) were selected from a hospital in Barbacena, MG, Brazil. They were tested in the five troponin I commercial rapid test kits and the results were compared with the study reference method (quantitative chemiluminescent immunoassay). Sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV) and correlation coefficients of the rapid tests against the reference method were defined. Results: The kits from Abon®, Interteck®, Medtest® and Wama® presented the same performance, reaching equal levels of sensitivity (98.08%), specificity (100%), PPV (100%), NPV (97.96%), and correlation coefficient (0.99). The Eco Diagnostica® kit presented lower sensitivity (82.69%), low correlation coefficient (0.91) and NPV (84.21%), not reaching ideal levels even though lying within the confidence interval. Discussion: The results obtained with the Abon®, Interteck®, Medtest® and Wama® test kits corroborate pre-existing literature data on the diagnostic accuracy of rapid tests for troponin detection. These tests are allowed for immediate decision making by physicians and can be used to reduce unnecessary hospitalization time and costs associated with a suspected AMI. Conclusion: The kits from Abon®, Interteck®, Medtest® and Wama® showed excellent diagnostic performance, what makes them an important diagnostic tool in smaller laboratories without automated equipment.
DOI: 10.6084/m9.figshare.14286260.v1
title: Evaluation of HLA-G immune checkpoint molecule in melanocytic lesions

description: ABSTRACT The human leukocyte antigen-G (HLA-G) is a non-classical molecule of the major histocompatibility complex. HLA-G has been associated with the process of tumorigenesis and tumor escape. In this study, we aim to evaluate the HLA-G expression in melanocytic lesions and in melanoma for determining when melanocytic lesions start its expression. Twenty-two skin biopsies samples were submitted to immunohistochemistry; HLA-G expression was detected in 63.6% of the samples. This expression in melanocytic cells was significantly higher in melanoma than in benign melanocytic lesions (p &lt; 0.002). Our results suggest that HLA-G expression starts late in the process of tumorigenesis.
DOI: 10.6084/m9.figshare.14286258.v1
title: Association of the CHGA gene polymorphism in patients with hemorrhagic stroke and/or aneurysm

description: ABSTRACT Introduction: Cerebrovascular diseases have been associated with several genes. Chromogranin A (CHGA) has been used as maker in cardiovascular disease. Therefore, evaluating the polymorphism and verifying its association with this pathology is very important to better understand this disease. Objective: The aim of this study was to identify the association between coding region polymorphism in -264 position of the CHGA gene (Glu264Asp) and hemorrhagic stroke (HS)/aneurysm in the Federal District, Brazil. Methods: This is a population-based case-control, involving 45 cases with HS and/or aneurysm. Polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method is used for genotyping these samples. A significance level of 5% was adopted. Results: The absence of the CC genotype the Glu264Asp CHGA polymorphism in the study participants and the significant presence of the GC heterozygote genotype were observed in this study. However, the distribution of genotypes did not differ statistically in the groups. Conclusion: The Glu264Asp CHGA polymorphism does not seem to contribute to the genesis of the CHGA protein expression in this patients group, but to understand whether or not there is a possible association of the pathology in question and whether the mutation will contribute in the gene therapy and thus to improve patients’ quality of life.
DOI: 10.6084/m9.figshare.14286257.v1
title: Performance evaluation of HIV infection diagnostic tests

description: ABSTRACT Introduction: Many factors can impact the performance of diagnostic assays for the human immunodeficiency virus (HIV) infection, affecting the results of population surveys. Objective: The objective of this study was to evaluate the performance of point-of-care rapid tests (RT) used for HIV diagnosis as compared to conventional tests in blood samples from a population of transvestites and transsexual women. Methods: A total of 1,385 samples with HIV RT results were submitted to Instituto Adolfo Lutz for evaluation by conventional laboratory tests. Results: HIV positivity was confirmed by conventional laboratory tests in 100% of the 240 (17.3%) samples with reactive RT. However, 1,145 (82.7%) samples with non-reactive RT results were evaluated; three (0.3%) tested positive and one (0.1%), indeterminate for HIV. Although a proportion of discordant results were found, the point-of-care RTs showed a high confirmation rate when compared to the serological tests. Conclusion: The data of this study corroborate the importance of adopting effective management tools to ensure quality of HIV infection diagnosis.
DOI: 10.6084/m9.figshare.14286255.v1
title: Individual niche trajectories in nesting green turtles on Rocas Atoll, Brazil: an isotopic tool to assess diet shifts over time

description: Abstract In this study, multi-tissue (yolk and carapace) stable isotope analysis was used to assess individual isotopic niche trajectories of nesting green turtles on Rocas Atoll, off northeastern Brazil, and to reveal a diet shift in the temporal dimension. The diet trajectories of individual green turtles were highly directional, with a stronger component towards decreasing values of δ15N from carapace to yolk. When the green turtles are in their foraging sites (temporal window measured by the yolk samples), they are more herbivores. Conversely, in a broader temporal window, the green turtles demonstrate a carnivore-omnivore strategy, such as represented by heavier δ15N values in the carapace. This finding confirms a temporal diet shift. This is the first study that applies trophic niche trajectories for sea turtles, adding a new isotopic tool to understand the trophic ecology of these migrant animals.
DOI: 10.6084/m9.figshare.14286252.v1
title: Comparison of micronuclei frequency between smokers and non-smokers: a systematic review

description: ABSTRACT Introduction: Cancer results from the accumulation of several modifications in the genetic material and, therefore, it is possible to carry out its cytogenetic detection using biomarkers. Micronuclei (MN) have been addressed in the literature as biomarkers of genotoxic damage. These markers provide information on biological or biochemical changes in a target tissue at early stage, enabling a favorable prognosis. Objective: To compare whether the frequency of MN in active smokers is higher than that in non-smokers. Material and method: The search was performed in the Medical Literature Analysis and Retrieval System (PubMeb), in the Latin American and Caribbean Literature in Health Sciences (LILACS), and in the Scientific Electronic Electronic Library Online (SciELO), for articles published in the last ten years. Randomized clinical trials, with a cross-sectional design, which compared the MN frequency in the oral mucosa of adult smokers and non-smokers, were selected. Results: A total of 52 articles were identified, four of them were removed due to duplicity. From the remaining 48 studies, after reading their titles and abstracts, 14 remained, which had their full texts read. Finally, eight articles remained for the qualitative analysis. Discussion and conclusion: Individuals who use tobacco present genotoxic and cytotoxic damages that interfere in the mitosis process, which leads to MN formation. The hypothesis of smoking as the cause of this genetic alteration is corroborated by the authors when comparing the data obtained in their studies between risk groups and control groups.
DOI: 10.6084/m9.figshare.14286249.v1
title: Cerebrospinal fluid: history, collection techniques, indications, contraindications and complications

description: ABSTRACT This article is based on a historical review of the medical literature with the purpose of acknowledging the historical stages and anatomical findings over the years, which led gradually to performance of the first lumbar puncture by Quincke, as well as collection techniques and analyses, allowing it to be an irreplaceable diagnostic tool in daily clinical practice. Cerebrospinal fluid analyses have continued to develop and nowadays play a major role in diagnosing and understanding the physiopathology of a great variety of neurological conditions. Biomarkers and genetic sequencing have recently been the target of multiple studies and are implicated as promising diagnostic tools of a large range of diseases.
DOI: 10.6084/m9.figshare.14286246.v1
title: Multi-taxonomic survey in the Sierra del Abra Tanchipa Biosphere Reserve

description: Abstract: Studies on biological diversity are essential to generate baseline information in natural protected areas. In the present study, we developed a multi-taxonomic inventory in the Sierra del Abra Tanchipa Biosphere Reserve, located northeast of San Luis Potosí, Mexico. Systematic samplings were performed between January 2017 to May 2018, for the taxonomic groups of flora, amphibians, reptiles, birds, and mammals. A total of 3 730 records of 683 species were obtained, corresponding to 427 species of flora, 10 of amphibians, 20 of reptiles, 192 of birds, and 34 of mammals, from which 47 species are threatened. The results obtained represent the critical biodiversity that can be found in this natural protected area. The information will be useful for decision-making on the management and conservation of biodiversity in the Sierra Madre Oriental’s ecological corridor.
DOI: 10.6084/m9.figshare.14286244.v1
title: Vascular plant checklist in an area of extreme biological importance: filling gaps in the Caparaó National Park-ES, Brazil

description: Abstract Regional floristic lists are essential for defining biodiversity conservation strategies and are key to assist in filling knowledge gaps. They aim to provide a data source for applying tools to reduce extinction rates and to conserve ecosystems. Herein we present the results of an inventory of vascular plants in a rainforest in the Caparaó National Park (CNP) and approach their implications for conservation and management of this protected area and the surrounding communities. We conducted botanical expeditions between the years 2012 and 2017 in a montane and upper-montane forest of the CNP. We found 361 species distributed in 78 families and 181 genera. The study area is home to new species for science that have recently been described in other publications outside that location, and 4 new records for Espírito Santo State; also 43 species listed in different extinction threat categories (VU, EN and CR) and another 190 categorized with lesser concerns (LC and NT). The families with the highest species richness were: Melastomataceae (41 spp.), Lauraceae and Myrtaceae (30), Orchidaceae (26), Rubiaceae (24), and Asteraceae (20). Our results contribute to greater knowledge of the CNP flora, of the montane environments in Brazil and the vegetation of Espírito Santo state, in addition to demonstrate the importance of this protected area to the conservation Atlantic Forest biodiversity.
DOI: 10.6084/m9.figshare.14286243.v1
title: Coleopterans (Hexapoda, Coleoptera) associated with canopies of Callisthene fasciculata (Spr.) Mart. (Vochysiaceae) in the Brazilian Pantanal

description: Abstract: The study of coleopteran assemblages associated with the canopies of tropical forests can help to expand the knowledge about species diversity and the ecological patterns related to the distribution of this diversity in tropical environments, including wetlands such as the Brazilian Pantanal. In this scenario, the present study examined the effect of temporal variation on the abundance, richness and distribution of the Coleoptera assemblage associated with canopies of Callisthene fasciculata (Spr.) Mart. (Vochysiaceae) throughout the dry and high-water seasonal periods in the Northern Pantanal of Mato Grosso, Brazil. Twelve specimens of C. fasciculata were sampled between 2010 and 2011, six per seasonal period, by thermal fogging with insecticide. A total of 1,663 coleopterans were collected, consisting of 1,572 adults and 91 larvae. The adults are distributed into 38 families and 251 species or morphospecies. Chrysomelidae, Curculionidae, Nitidulidae and Tenebrionidae predominated in terms of abundance and richness. Family distribution, abundance, species richness and trophic guilds varied between the dry and high-water periods, demonstrating a relationship with the phenological conditions of C. fasciculata in addition to seasonality effect. In conclusion, the seasonality imposed by the hydrological regime and its influence on the phenology of C. fasciculata affect the structure of the coleopteran assemblage associated with the canopy of this monodominant vegetation formation in the Pantanal of Mato Grosso.
DOI: 10.6084/m9.figshare.14286240.v1
title: New records of dragonflies and damselflies (Insecta: Odonata) from Amapá state, Brazil

description: Abstract: The Odonata Order comprises one of the largest groups of aquatic insects, 7,000 species are described worldwide, with approximately 860 species registered in Brazil, around 14% of the global fauna known to date. However, there are still great gaps in the knowledge of Odonata fauna in many areas of Brazil. This study aims to present the results of the survey of Odonata species sampled in three counties in the state of Amapá. The state is located in the north of the country, inserted in the Amazon Biome. Odonata were caught between January and December 2018, with 472 specimens being sampled, belonging to seven families, 36 genera and 53 species. In total, 27 of the species found during the study correspond to new records for the state of Amapá. Due to the lack of information on the diversity of the Odonata order in Amapá, the list of species presented should serve as input for new studies contributing to the knowledge of the order in the state.
DOI: 10.6084/m9.figshare.14286239.v1
title: Foraging preferences of the native stingless bee Melipona seminigra pernigra (Apidae: Meliponini) in campo rupestre on canga of Serra dos Carajás, southeastern Amazonia

description: Abstract: Honey pollen samples of Melipona seminigra pernigraMoure & Kerr 1950 sampled between 2017 and 2019 from experimental apiaries installed in campo rupestre on canga (CRC) vegetation of the Serra dos Carajás aimed to evaluated seasonal floral availability of undisturbed and mining-influenced areas. Around one hundred pollen types were identified mainly belonging to Fabaceae, Myrtaceae and Euphorbiaceae (31, 6 and 5 species, respectively). Mining area presented the highest pollen richness, almost twice those identified in the undisturbed areas. 80% of the pollen types are rare with concentrations ≤ 2,000 pollen grains/10 g, while the remaining were the most abundant, frequent and the primary bee sources. These latter correspond mostly to native plants species such as Tapirira guianensis Aubl., Protium spp., Aparisthmium cordatum (A.Juss.) Baill., Mimosa acutistipula var. ferrea Barneby, Periandra mediterranea (Vell.) Taub., Miconia spp., Pleroma carajasense K.Rocha, Myrcia splendens (Sw.) DC., Serjania spp. and Solanum crinitum Lam. All pollen types were identified during both seasons, but higher concentration values are related to the dry period (June-September). The statistical analysis of the pollen data indicated that there was no significant difference between undisturbed and mining-influenced areas, since primary bee sources of this study are widespread used in revegetation of mined areas.