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Lysergic acid diethylamide (LSD) is a synthetic psychedelic compound with potential therapeutic value for psychiatric disorders. This study aims to establish Caenorhabditis elegans as an in vivo model for examining LSD's effects on locomotor behavior. Our results demonstrate that LSD is absorbed by C. elegans and that the acute treatment reduces animal speed, similar to the role of endogenous serotonin. This response is mediated in part by the serotonergic receptors SER-1 and SER-4. Our findings highlight the potential of this nematode as a new experimental model in psychedelic research.
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Caenorhabditis elegans , Alucinógenos , Dietilamida do Ácido Lisérgico , Animais , Caenorhabditis elegans/efeitos dos fármacos , Dietilamida do Ácido Lisérgico/farmacologia , Alucinógenos/farmacologia , Locomoção/efeitos dos fármacos , Receptores de Serotonina/efeitos dos fármacos , Receptores de Serotonina/metabolismo , Comportamento Animal/efeitos dos fármacos , Proteínas de Caenorhabditis elegans/metabolismo , Serotonina/metabolismoRESUMO
One of the principal byproducts of coffee roasting is the coffee parchment. It is abundant in bioactive substances, including derivatives of chlorogenic acids, which are well-known for their exceptional antioxidant effects. It is advantageous to use environmentally friendly extraction techniques on such residues since it adds value to the entire coffee production process supply chain. The aim of this work was to assess and enhance the ability of non-conventional extraction techniques to extract derivatives of chlorogenic acid from coffee parchment. A central composite design was used to maximize the recovery of those phenolic compounds. The optimized extraction conditions were with 5 min extraction period, at a temperature of 70 °C, and 80% ethanol in the extractor solvent. In this conditions extraction recovery of chlorogenic acids was of 0.8% by the use of microwave-aided extraction (MAE). The optimized conditions are practical, economical, and ecologically friendly method to extract phenolic compounds and, consequently, underscores the potential for sustainable utilization of coffee parchment, offering a valuable contribution to the development of environmentally conscious strategies within the coffee industry.
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Ácido Clorogênico , Coffea , Café , Extratos Vegetais , Ácido Clorogênico/isolamento & purificação , Ácido Clorogênico/química , Ácido Clorogênico/análise , Coffea/química , Extratos Vegetais/química , Extratos Vegetais/isolamento & purificação , Café/química , Fracionamento Químico/métodos , Fracionamento Químico/instrumentação , Micro-Ondas , Temperatura AltaRESUMO
Adherence to antiretroviral therapy (ART) is a complex and multi-determined process that is influenced by psychosocial variables. Although international studies have pointed to the adverse impact of HIV stigma, sexual stigma, and depression on ART adherence among men who have sex with men (MSM) with HIV, less is known about this association among Brazilians. We aimed to (a) evaluate indicators of depression, stigma related to HIV and homosexuality, and adherence to ART in a sample of Brazilian MSM living with HIV; (b) assess possible correlations between the variables analyzed, and (c) assess the impact of HIV and sexual stigma and depression on ART adherence. This cross-sectional study comprised 138 Brazilian MSM living with HIV as participants. Scales used included: a sociodemographic/clinical questionnaire, the questionnaire for assessment of adherence to antiretroviral therapy (CEAT-HIV), the Beck depression inventory (BDI-II), the internalized homophobia scale, and the HIV stigmatization scale. The mean adherence score was relatively high (78.83, within a range of 17-89 points). However, we observed inadequate ART adherence (CEAT-HIV < 75) in 28 (20.2%) respondents. Participants reported high scores for internalized sexual stigma, perceived sexual stigma in the community, and HIV stigma. Symptoms of depression were identified in 48.47% of participants. We found negative correlations between depression, HIV stigma, and treatment adherence, but not between sexual stigma and ART adherence. HIV-related stigma and sexual stigma were positively correlated with depression. Our regression analysis indicated that each year of age at diagnosis of HIV increased adherence by 0.22 points, on average. Each additional BDI-II score reduced adherence to ART by 0.20 points. The high prevalence of depression, HIV stigma, and sexual stigma, and their adverse effects on ART adherence and mental health, point to the need to implement evidence-based interventions to reduce sexual and serological stigma in the general population, as well as to mitigate the negative impacts of stigma on MSM living in HIV in Brazil. They also highlight the importance of periodically screening for these variables among MSM treated in Brazilian public health services, especially among those with inadequate adherence to ART.
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PURPOSE: Maternal high-fat diet (HF) programs obesity, metabolic dysfunction-associated steatotic liver disease (MASLD), hypertriglyceridemia, and hyperglycemia associated with increased endocannabinoid system (ECS) in the liver of adult male rat offspring. We hypothesized that maternal HF would induce sex specific ECS changes in the liver of newborn rats, prior to obesity onset, and maternal fish oil (FO) supplementation would reprogram the ECS and lipid metabolism markers preventing liver triglycerides (TG) accumulation. METHODS: Female rats received a control (CT) (10.9% fat) or HF (28.7% fat) diet 8 weeks prior to mating and during pregnancy. A subgroup of HF dams received 3% FO supplementation in the HF diet (35.4% fat) during pregnancy (HFFO). Serum hormones and liver TG, ECS, lipid metabolism, oxidative stress and autophagy markers were assessed in male and female newborn offspring. RESULTS: Maternal HF diet increased liver cannabinoid receptor 1 (CB1) in males and decreased CB2 in females, with no effect on liver TG. Maternal FO supplementation reduced liver CB1 regardless of the offspring sex, but reduced TG liver content only in females. FO reduced the liver content of the endocannabinoid anandamide in males, and the content of 2-arachidonoylglycerol in both sexes. Maternal HF increased lipogenic and decreased lipid oxidation markers, and FO induced the opposite regulation in the liver of offspring. CONCLUSION: Prenatal HF and FO differentially modulate liver ECS in the offspring before obesity and MASLD development. These results suggest that maternal nutrition at critical stages of development can modulate the offspring's ECS, predisposing or preventing the onset of metabolic diseases.
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Animais Recém-Nascidos , Dieta Hiperlipídica , Suplementos Nutricionais , Endocanabinoides , Óleos de Peixe , Lipogênese , Fígado , Fenômenos Fisiológicos da Nutrição Materna , Animais , Feminino , Gravidez , Óleos de Peixe/farmacologia , Óleos de Peixe/administração & dosagem , Endocanabinoides/metabolismo , Dieta Hiperlipídica/efeitos adversos , Fígado/metabolismo , Fígado/efeitos dos fármacos , Ratos , Masculino , Lipogênese/efeitos dos fármacos , Biomarcadores/sangue , Biomarcadores/metabolismo , Ratos Wistar , Efeitos Tardios da Exposição Pré-Natal , Metabolismo dos Lipídeos/efeitos dos fármacos , Triglicerídeos/sangueRESUMO
Rotigotine (RTG) is a dopamine agonist used in the treatment of Parkinson's disease. As it is susceptible to oxidation, stability studies must be carefully designed for the identification and characterization of all possible degradation products. Here, RTG degradation was evaluated according to the International Conference on Harmonization guidelines under various stress conditions, including acidic and basic hydrolysis, oxidative, metallic, photolytic, and thermal conditions. Additionally, more severe stress conditions were applied to induce RTG degradation. Significant degradation was only observed under oxidative and photolytic conditions. The samples were analyzed by high performance liquid chromatography coupled to photodiode array detectors, charged aerosol, and high-resolution mass spectrometry. Chromatographic analyses revealed the presence of eight substances related to RTG, four of which were already described and were qualified impurities (impurities B, C, K and E) and four new degradation products (DP-1 - DP-4), whose structures were characterized by high-resolution mass spectrometry through Q-Orbitrap and electrospray ionization. In the stress testing of the active pharmaceutical ingredient in solid form, significant RTG degradation was observed in the presence of the oxidative matrix. The results corroborate the literature that confirm the high susceptibility of RTG to oxidation and the importance of using different detectors to detect degradation products in forced degradation studies.
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Estabilidade de Medicamentos , Espectrometria de Massas por Ionização por Electrospray , Tetra-Hidronaftalenos , Tiofenos , Cromatografia Líquida de Alta Pressão/métodos , Tiofenos/química , Tiofenos/análise , Espectrometria de Massas por Ionização por Electrospray/métodos , Tetra-Hidronaftalenos/química , Tetra-Hidronaftalenos/análise , Oxirredução , Agonistas de Dopamina/análise , Agonistas de Dopamina/química , Hidrólise , Contaminação de Medicamentos/prevenção & controle , FotóliseRESUMO
Aqueous and hydroalcoholic extracts from the pulp of Ambelania acida Aubl. (Apocynaceae) fruits were subjected to analysis through UHPLC-HRMS and antioxidant potential using the TPC, DPPH, ABTS, FRAP, and ORAC assays. A putative identification of the compounds carried out by comparison of the fragmentation spectra revealed the predominance of the monoterpene indole alkaloids tabersonine, pseudocopsinine, ajmalicine, and strictosidine. Additionally, gallic acid, caffeic acid, citric acid, 3-O-p-coumaroylquinic acid, chlorogenic acid, catechin, ellagic acid, eschweilenol C (ellagic acid deoxyhexoside), and sucrose were identified. In face of the phenolic compounds observed, hydroalcoholic extract showed a higher antioxidant activity compared to the aqueous extract, observed at TPC (108.85 mg GAE/100g), FRAP (0.73 µmol Fe2SO4/g), DPPH (1221.76 µmol TE/g), ABTS (3460.00 µmol TE/g), and ORAC assays (120.47 µmol TE/g). These findings underscore the abundant presence of bioactive compounds, including phenolics and alkaloids, in an edible Amazonian fruit.
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Ocotea, the largest genus in the Lauraceae family, encompasses numerous species of scientific interest. However, most Ocotea species have only been described morphologically. This study used an untargeted metabolomics workflow with UHPLC-HRMS and GNPS-FBMN to provide the first chemical evaluation of the polar specialized metabolites of O. delicata leaves. Leaves from three O. delicata specimens were extracted using ultrasound-assisted extraction with 70% ethanol. Among the examined samples, 44 metabolites, including alkaloids and flavonoids, were identified. In contrast to other Ocotea species, O. delicata has a wider diversity of kaempferol derivatives than quercetin. The biomass of the specimens showed a significant correlation with the chemical profile. The similarity among specimens was mostly determined by the concentrations of quinic acid, kaempferol glycosides, and boldine. The evaluated specimens exhibited chemical features similar to those of species classified as New World Ocotea, with the coexistence of aporphine and benzylisoquinoline alkaloids.
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We investigated the experiences of Brazilian gay men with HIV, focusing on the moment of diagnosis and its potential biopsychosocial impacts. This clinical-qualitative study involved 15 participants interviewed online and synchronously by a clinical psychologist in 2021. Thematic analysis was employed to analyze the data. Interpretations were grounded in Minority Stress Theory. Four thematic axes emerged, including "Diagnostic Revelation", "Social and Internalized Stigma", "Biopsychosocial Effects of Living with HIV", and "Gratitude for Treatment Advances and the Brazilian Health System". The diagnosis was often experienced as traumatic, exacerbated by the absence of empathy and emotional support from healthcare providers. Participants commonly reported guilt, fear upon learning of their HIV status, social isolation, loneliness, lack of social support, and damage to affective-sexual relationships. Many also noted a decline in mental health, even those without HIV-related medical complications. Despite over 40 years since the HIV epidemic began, the prevalence of homophobia and serophobia among gay men remains widespread, including within the multidisciplinary teams of specialized services. This indicates that the stigma associated with homosexuality and HIV persists, despite significant biomedical progress in the diagnosis and treatment of the infection, particularly in Brazil.
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Dietary supplements (DS) are intended for healthy people to maintain or improve their overall health. Its consumption is widespread in large part of the general population and at all levels of athletes. Nevertheless, DS use can also pose health risks to individuals and, in the case of athletes, may lead to adverse analytical findings (AAFs) due to the possibility of DS contamination or adulteration with doping agents banned by the World Anti-Doping Agency. Although educational initiatives are being performed in Brazil to warn the sports community about inadvertent doping cases, AAFs connected to the DS administration have been increasingly growing. The findings of DS analyzed by the Brazilian Doping Control Laboratory (LBCD), between 2017 and 2022, after Testing Authorities (TAs) analysis requests, showed an alarming number of tainted samples. Diuretics were the most common adulterants found in all supplement types. However, the profile of prohibited substances in manufactured and compounded dietary supplements (MDS and CDS, respectively) were distinct, with stimulants being most prevalent in MDS and anabolic agents in CDS products. Additionally, MDS samples generally presented higher estimated concentrations of banned substances (mg/g) than CDS samples (µg/g). The common practice of DS intake by athletes continues to be of great concern for a doping-free sport, given the high prevalence of prohibited substances detected in the analyzed samples by the LBCD. The current Brazilian scenario reinforces the importance of raising awareness in the sports community of the possible consequences of an unintentional doping case linked to DS use.
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Dopagem Esportivo , Esportes , Humanos , Brasil , Diuréticos/análise , Atletas , Suplementos Nutricionais/análiseRESUMO
Introduction: The therapeutic options for breast cancer are diverse. Increasingly, treatments are established on an individual basis, depending on a series of variables ranging from age to the molecular profile of the tumor. When neoadjuvant chemotherapy (NAC) is necessary, adequate clinical evaluation (CE) and control examinations, such as breast ultrasound (US) and mammography (MMG), are of fundamental importance, as it is necessary to reevaluate the tumor lesion to determine an individualized surgical treatment, with the aim of performing breast-conserving surgery within the available techniques. This study sought to evaluate the pathological response of patients undergoing neoadjuvant chemotherapy, analyzing the presence or absence of tumor reduction by relating the physical examination with imaging methods (MMG and US), taking the anatomopathological examination measurements as the gold standard, thus intending to identify the best method for evaluating the pathological response. Methods: This was a prospective, observational, analytical cohort study. The study included 41 patients diagnosed with breast cancer detected by mammography and ultrasound (MMG and US) followed by biopsy, who underwent neoadjuvant chemotherapy (NAC) and surgery. The measurements of the malignant breast lesions obtained by CE, MMG and US were compared with the anatomopathological measurements on biopsy as the gold standard. Results: Pearson's correlation coefficient was the statistical method used for evaluation, finding a value of 0.49 between the anatomopathological examination and CE, 0.47 between the anatomopathological examination and MMG and 0.48 between the anatomopathological examination and US (p<0.05). Conclusions: CE, MMG and US showed a moderate correlation with anatomopathological measurement, in addition to a moderate correlation between them, demonstrating equivalence in the pre-surgical definition of the size of the breast tumor after NAC, being complementary to each other to define a measure of greater accuracy of the tumor in breast cancer. (AU)
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Humanos , Feminino , Neoplasias da Mama , Terapia Neoadjuvante , Ultrassom , Mamografia , Tratamento Farmacológico , Resposta Patológica Completa , NeoplasiasRESUMO
Objetivo: conhecer as percepções de profissionais de saúde acerca das consequências do isolamento social, causado pela pandemia da COVID-19, no desenvolvimento e na vida de crianças com Transtorno do Espectro Autista. Método: estudo exploratório, descritivo e de abordagem qualitativa, apoiado nos referenciais do Cuidado Centrado na Família e da Análise de Conteúdo de Bardin e aprovado pelo Comitê de Ética em Pesquisa. Desenvolvido em municípios do interior paulista, de setembro a outubro/2021, com participação de doze profissionais de saúde. Resultados: as experiências apreendidas estiveram representadas nas categorias temáticas: "Interrupção das terapêuticas e estratégias profissionais", "Implicações da pandemia no desenvolvimento da criança autista" e "Isolamento social da pandemia e a dinâmica familiar da criança com autismo". Conclusão: o isolamento social decorrente da pandemia do coronavírus interferiu na vida das crianças autistas e suas famílias, com consequências ao desenvolvimento social, motor, linguístico e pedagógico(AU)
Objective: to know the guidelines of health professionals about the consequences of social isolation, caused by the COVID-19 pandemic, on the development and lives of children with Autistic Spectrum Disorder. Method: field study, exploratory, descriptive and with a qualitative approach, supported by the references of Family-Centered Care and Bardin's Content Analysis and approved by the Research Ethics Committee. Developed in municipalities in the interior of São Paulo, from September to October/2021, with the participation of twelve health professionals. Results: the experiences learned followed instructions in the thematic categories: "Interruption of therapies and professional strategies", "Implications of the pandemic on the development of the autistic child" and "Social isolation of the pandemic and the family dynamics of the child with autism". Conclusion: the social isolation resulting from the coronavirus pandemic interfered in the lives of autistic children and their families, with consequences for social, motor, linguistic and pedagogical development(AU)
Objetivo: conocer las percepciones de los profesionales de la salud en cuanto a las consecuencias del aislamiento social, provocado por la pandemia de la COVID-19, en el desarrollo y la vida de los niños con Trastorno del Espectro Autista. Método: estudio exploratorio, descriptivo y con enfoque cualitativo, apoyado en los referenciales del Cuidado Centrado en la Familia y el Análisis de Contenido de Bardin y aprobado por el Comité de Ética en Investigación. El estudio tuvo lugar en municipios del interior de São Paulo, de septiembre a octubre/2021, contando con la participación de doce profesionales de la salud. Resultados: las experiencias aprendidas se representaron por las categorías temáticas: "Interrupción de terapias y estrategias profesionales", "Implicaciones de la pandemia en el desarrollo del niño autista" y "Aislamiento social de la pandemia y la dinámica familiar del niño con autismo". Conclusión: el aislamiento social resultante de la pandemia del coronavirus interfirió en la vida de los niños autistas y sus familias, con consecuencias para el desarrollo social, motor, lingüístico y pedagógico(AU)
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Humanos , Feminino , Quarentena , Saúde da Criança , Transtorno do Espectro Autista/terapia , Distanciamento Físico , COVID-19/prevenção & controle , Pesquisa QualitativaRESUMO
Psychedelic compounds have gained renewed interest for their potential therapeutic applications, but their metabolism and effects on complex biological systems remain poorly understood. Here, we present a systematic characterization of Lysergic Acid Diethylamide (LSD) metabolites in the model organism Caenorhabditis elegans using state-of-the-art analytical techniques. By employing ultra-high performance liquid chromatography coupled with high-resolution tandem mass spectrometry, we putatively identified a range of LSD metabolites, shedding light on their metabolic pathways and offering insights into their pharmacokinetics. Our study demonstrates the suitability of Caenorhabditis elegans as a valuable model system for investigating the metabolism of psychedelic compounds and provides a foundation for further research on the therapeutic potential of LSD.
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Caenorhabditis elegans , Alucinógenos , Animais , Cromatografia Líquida de Alta Pressão , Dietilamida do Ácido Lisérgico , Espectrometria de Massas em TandemRESUMO
OBJECTIVE: This study aimed to assess the sociodemographic and clinical profile of women deprived of their liberty and to identify the prevalence of sexually transmitted diseases and human papillomavirus through self-sampling samples. METHODS: This is an epidemiological, cross-sectional, observational, and descriptive study of the prevalence and correlation of the diagnosis of human papillomavirus infection in 268 encarcered women in Amazonas submitted to self-sampling from June 2019 to September 2020 using the genotyping analysis. Patients with positive and inconclusive results were evaluated by commercialized PCR to detect pathogens causing sexually transmitted diseases. The sample size used was based on a convenience sample. RESULTS: In 268 women, human papillomavirus DNA was detected in 87 (32.5%) of them. Sexually transmitted diseases were detected in 30 (34.48%) of the 87 women with a positive or inconclusive result for human papillomavirus. Women with more than three pregnancies had a higher risk of human papillomavirus detection (p=0.004). CONCLUSION: The prevalence of human papillomavirus and other sexually transmitted diseases in encarcered women in Amazonas is 32.5 and 34.48%, respectively. Most women were single (60.4%) and reported having had more than 15 partners (90.8%).
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Infecções por Papillomavirus , Infecções Sexualmente Transmissíveis , Humanos , Feminino , Papillomavirus Humano , Prevalência , Estudos Transversais , Infecções Sexualmente Transmissíveis/epidemiologia , Infecções por Papillomavirus/diagnóstico , Infecções por Papillomavirus/epidemiologia , Fatores de RiscoRESUMO
Cobalt was included on the World Anti-Doping Agency Prohibited List in 2015 due to its effect on stimulus of erythropoiesis via stabilization of hypoxia-inducible factor. Although it has proven benefits for performance enhancement, the unavailability of inductively coupled plasma-mass spectrometry on routine of the accredited laboratories is a factor that reduces its applicability in anti-doping analysis. Therefore, an analytical method for quantification of urinary cobalt as its diethyldithiocarbamate complex by liquid chromatography coupled with high-resolution tandem mass spectrometry was developed and validated. Palladium was proposed as internal standard and rhodium as a complexation control. A microwave-assisted acid digestion of the urine samples was essential, not only to eliminate the matrix effect but mainly to avoid the non-specific bond of cobalt to endogenous molecules. A linear method was obtained over the studied range from a negative urine control to a spiked concentration of 25 ng/mL, with an estimated limit of quantification of 2.5 ng/mL, and an adequate combined standard uncertainty of 11.4%. Considering that all reagents are commercially available, the proposed strategy is feasible to be included on routine sample preparation. Monitoring urinary cobalt concentrations globally opens the perspective to support the anti-doping system to define a suitable threshold value and to understand its potential misuse by athletes seeking for performance improvement.
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Líquidos Corporais , Dopagem Esportivo , Humanos , Espectrometria de Massas em Tandem/métodos , Cobalto/urina , Cromatografia Líquida/métodos , Manejo de Espécimes , Detecção do Abuso de Substâncias/métodosRESUMO
Introduction: Maternal high-fat (HF) diet during gestation and lactation programs obesity in rat offspring associated with sex-dependent and tissue-specific changes of the endocannabinoid system (ECS). The ECS activation induces food intake and preference for fat as well as lipogenesis. We hypothesized that maternal HF diet would increase the lipid endocannabinoid levels in breast milk programming cannabinoid and dopamine signaling and food preference in rat offspring. Methods: Female Wistar rats were assigned into two experimental groups: control group (C), which received a standard diet (10% fat), or HF group, which received a high-fat diet (29% fat) for 8 weeks before mating and during gestation and lactation. Milk samples were collected to measure endocannabinoids and fatty acids by mass spectrometry. Cannabinoid and dopamine signaling were evaluated in the nucleus accumbens (NAc) of male and female weanling offspring. C and HF offspring received C diet after weaning and food preference was assessed in adolescence. Results: Maternal HF diet reduced the milk content of anandamide (AEA) (p<0.05) and 2-arachidonoylglycerol (2-AG) (p<0.05). In parallel, maternal HF diet increased adiposity in male (p<0.05) and female offspring (p<0.05) at weaning. Maternal HF diet increased cannabinoid and dopamine signaling in the NAc only in male offspring (p<0.05), which was associated with higher preference for fat in adolescence (p<0.05). Conclusion: Contrary to our hypothesis, maternal HF diet reduced AEA and 2-AG in breast milk. We speculate that decreased endocannabinoid exposure during lactation may induce sex-dependent adaptive changes of the cannabinoid-dopamine crosstalk signaling in the developing NAc, contributing to alterations in neurodevelopment and programming of preference for fat in adolescent male offspring.
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Canabinoides , Endocanabinoides , Ratos , Animais , Masculino , Feminino , Dieta Hiperlipídica/efeitos adversos , Leite , Dopamina , Preferências Alimentares , Ratos Wistar , ObesidadeRESUMO
In this study, a beetroot peel flour was made, and its in vitro antioxidant activity was determined in aqueous (BPFw) and ethanolic (BPFe) extracts. The influence of BPFw on breast cancer cell viability was also determined. A targeted betalain profile was obtained using high-resolution Q-Extractive Plus Orbitrap mass spectrometry (Obrtitrap-HRMS) alongside untargeted chemical profiling of BPFw using Ultra-High-Performance Liquid Chromatography with High-Resolution Mass Spectrometry (UHPLC-HRMS). BPFw and BPFe presented satisfactory antioxidant activities, with emphasis on the total phenolic compounds and ORAC results for BPFw (301.64 ± 0.20 mg GAE/100 g and 3032.78 ± 55.00 µmol T/100 g, respectively). The MCF-7 and MDA-MB-231 breast cancer cells presented reductions in viability when treated with BPFw, showing dose-dependent behavior, with MDA-MB-231 also showing time-dependent behavior. The chemical profiling of BPFw led to the identification of 9 betalains and 59 other compounds distributed amongst 28 chemical classes, with flavonoids and their derivates and coumarins being the most abundant. Three forms of betalain generated via thermal degradation were identified. However, regardless of thermal processing, the BPF still presented satisfactory antioxidant and anticancer activities, possibly due to synergism with other identified molecules with reported anticancer activities via different metabolic pathways.
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The estimation of limits of detection (LOD) for solely qualitative methods in analytical chemistry may prove challenging because all the approaches with which chemists are familiar require some type of numeric data input. The best model to describe the binary response in these methods (detected/not detected) is a logistic model; however, these models are not easily handled by most of the laboratories and generally demand expensive statistical software packages. In this work, the advantages of applying this approach are discussed and its implementation using commercial spreadsheet software is demonstrated. A free online application based on the R environment using shinyapps was developed and its application was validated and discussed with a dataset of 57 different target compounds analyzed in urine according to the requirements of the World Anti-Doping Agency (WADA). This tool allows free, extremely quick, and easy determinations of LOD in qualitative analyses as well as the determination of the probabilities of detection in any given concentration.
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Dopagem Esportivo , Espectrometria de Massas em Tandem , Limite de Detecção , Espectrometria de Massas em Tandem/métodos , Modelos Logísticos , InternetRESUMO
Copaifera langsdorffii Desf. is recognised as one of most famous medicinal and economic species of Copaiba, occurring in several distinct biomes. An untargeted metabolomic approach was used to evaluate the chemical variability of C. langsdorffii from contrasting climates biomes (Atlantic Rainflorest and the semiarid Cerrado). Metabolomic analysis enabled the identification of 11 compounds, including glycosylated flavonoids and galloylquinic acid derivatives. Multivariate analysis highlighted that Cerrado population had a significantly higher concentrations of galloylquinic acid derivatives in comparison to the rainforest biome. Meanwhile, Atlantic Rainforest populations presented higher content of flavonols. Semiarid biome, reduced the concentration of flavonoids, mainly concerning quercetin and kaempferol derivatives, however, in this biome flavonoids were more diverse. Both chemical classes presented relevance to be used as geographical origin chemical markers by qualitative and quantitative features.
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Fabaceae , Folhas de Planta , Folhas de Planta/química , Flavonoides/química , Quercetina/análise , Extratos Vegetais/química , Fabaceae/químicaRESUMO
Blood transfusion is performed by cheating athletes to rapidly increase oxygen delivery to exercise muscles and enhance their performance. This method is banned by the World Anti-doping Agency (WADA). Heterologous or allogenic blood transfusion happens when blood from a different person is transfused. The method used to detect this type of doping is based on flow cytometry, by identifying variations in blood group minor antigens present on the red blood cells' surface. Transfusion practices have regained interest since the introduction of human recombinant erythropoietin detection method. It has been reported that the number of occurrences of two athletes sharing an identical phenotype in the same sport was five times higher than the theoretical populational probability. The present work describes the prevalence of 10 erythrocytes surface antigens in a population of 261 athletes from all five continents. The matching phenotype per sport is also described.
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Dopagem Esportivo , Esportes , Humanos , Transfusão de Sangue , Eritrócitos , AtletasRESUMO
SUMMARY OBJECTIVE: This study aimed to assess the sociodemographic and clinical profile of women deprived of their liberty and to identify the prevalence of sexually transmitted diseases and human papillomavirus through self-sampling samples. METHODS: This is an epidemiological, cross-sectional, observational, and descriptive study of the prevalence and correlation of the diagnosis of human papillomavirus infection in 268 encarcered women in Amazonas submitted to self-sampling from June 2019 to September 2020 using the genotyping analysis. Patients with positive and inconclusive results were evaluated by commercialized PCR to detect pathogens causing sexually transmitted diseases. The sample size used was based on a convenience sample. RESULTS: In 268 women, human papillomavirus DNA was detected in 87 (32.5%) of them. Sexually transmitted diseases were detected in 30 (34.48%) of the 87 women with a positive or inconclusive result for human papillomavirus. Women with more than three pregnancies had a higher risk of human papillomavirus detection (p=0.004). CONCLUSION: The prevalence of human papillomavirus and other sexually transmitted diseases in encarcered women in Amazonas is 32.5 and 34.48%, respectively. Most women were single (60.4%) and reported having had more than 15 partners (90.8%).