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1.
Artigo em Inglês, Português | LILACS-Express | LILACS | ID: biblio-1553826

RESUMO

Enquanto no Norte Global se discute uma crise na Atenção Primária à Saúde, a maioria dos países nunca chegou a constituir sistemas de saúde baseados propriamente numa atenção primária robusta. Nesse cenário, o Brasil apresenta uma tendência mais favorável, com conquistas importantes para a atenção primária e a medicina de família e comunidade nos últimos dez anos. Restam desafios a serem superados para que o Sistema Único de Saúde alcance níveis satisfatórios de acesso a seus serviços, com profissionais adequadamente formados e valorizados pela população.


While the Global North is discussing a crisis in primary health care, the majority of countries have never managed to establish health systems based on robust primary care. Brazil presents a more favorable trend, with important achievements for primary care and family practice over the last ten years. There are still challenges to be overcome so that the Unified Health System achieves satisfactory levels of access to its services, with professionals who are properly trained and valued by the public.


Mientras que en el Norte Global se habla de una crisis de la atención primaria, la mayoría de los países nunca han creado realmente sistemas sanitarios basados en una atención primaria robusta. Brasil, muestra una tendencia más favorable, con importantes logros para la atención primaria y la medicina familiar y comunitaria en los últimos diez años. Aún quedan retos por superar para que el Sistema Único de Salud alcance niveles satisfactorios de acceso a sus servicios, con profesionales debidamente formados y valorados por la población.

2.
Anal Bioanal Chem ; 2024 Jul 04.
Artigo em Inglês | MEDLINE | ID: mdl-38965103

RESUMO

"Purple Drank", a soft drink containing promethazine (PMZ) and codeine (COD), has gained global popularity for its hallucinogenic effects. Consuming large amounts of this combination can lead to potentially fatal events. The binding of these drugs to plasma proteins can exacerbate the issue by increasing the risk of drug interactions, side effects, and/or toxicity. Herein, the binding affinity to human serum albumin (HSA) of PMZ and its primary metabolites [N-desmethyl promethazine (DMPMZ) and promethazine sulphoxide (PMZSO)], along with COD, was investigated by high-performance affinity chromatography (HPAC) though zonal approach. PMZ and its metabolites exhibited a notable binding affinity for HSA (%b values higher than 80%), while COD exhibited a %b value of 65%. To discern the specific sites of HSA to which these compounds were bound, displacement experiments were performed using warfarin and (S)-ibuprofen as probes for sites I and II, respectively, which revealed that all analytes were bound to both sites. Molecular docking studies corroborated the experimental results, reinforcing the insights gained from the empirical data. The in silico data also suggested that competition between PMZ and its metabolites with COD can occur in both sites of HSA, but mainly in site II. As the target compounds are chiral, the enantioselectivity for HSA binding was also explored, showing that the binding for these compounds was not enantioselective.

3.
Cureus ; 16(5): e61439, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38947673

RESUMO

INTRODUCTION: Turner syndrome (TS), one of the most common chromosomal abnormalities in females, often results in adult cardiovascular and metabolic complications. Information on pediatric age is scarce. This study aimed to compare the presence of cardiometabolic risk factors in children with TS and healthy controls. METHODS: This is a cross-sectional study comparing patients with TS to age-matched healthy controls, regarding cardiometabolic risk factors including lipid profile, fasting glucose, insulin resistance, body composition, body mass index, blood pressure, and carotid intima-media thickness (cIMT). RESULTS: We included nine TS patients and nine controls with a median age of 13 years (9-14 years). Three TS patients and three controls were prepubertal. All TS patients received growth hormone treatment (GHT), median treatment of six years (3-10 years); four patients underwent treatment with estradiol. No statistically significant differences were detected between TS patients and controls regarding body mass index (BMI), cholesterol levels, and insulin resistance. cIMT indexed to body surface area showed no significant differences between TS patients and controls (0.37 vs 0.35 mm/m2, respectively, p=0.605). TS patients had lower body fat levels (7.2% vs 34.9%, p=0.004). On the other hand, TS patients had higher levels of systolic (z-score 1.04 vs -0.08, p=0.001) and diastolic (z-score 1.08 vs 0.33, p=0.031) blood pressure (BP) and aspartate (AST) and alanine (ALT) aminotransferase levels (26 vs 20 U/L, p=0.008 and 19 vs 14 U/L, p=0.004, respectively). CONCLUSION: Patients with TS, all submitted to GHT, had lower body fat levels compared with controls, despite similar BMI. Although we found no differences in cIMT between the two groups, young girls with TS had higher BP and transaminase levels. Early anthropometric, cardiovascular, and analytical monitoring of patients with TS is essential to detect abnormalities and prevent further complications.

4.
Cardiovasc Pathol ; 72: 107664, 2024 May 31.
Artigo em Inglês | MEDLINE | ID: mdl-38823525

RESUMO

A 65-year-old man with previous history of smoking, controlled HIV infection, treated hepatitis B infection, and type III cryoglobulinemia, was admitted due to right heart failure symptoms and significant weight loss. Despite being haemodynamically stable, he had periods of 1:1 conduction atrial flutter and presented with respiratory alkalosis and metabolic acidosis, as well as acute kidney and hepatic dysfunction, elevated D-dimer and cardiac markers. He underwent imaging with chest computed tomography and echocardiogram that confirmed pulmonary embolism and most notably revealed a significant sized cardiac mass causing almost complete obstruction of the right chambers, with no cleavage plane with the myocardial walls and tricuspid valve. Cardiac magnetic resonance was highly suggestive of malignancy. Cardiac surgery for mass excision and endomyocardial biopsy for diagnosis were considered, but the patient died with obstructive shock unresponsive to medical treatment. The autopsy revealed a primary unspecified diffuse large B-cell lymphoma.

5.
Anim Reprod Sci ; 267: 107515, 2024 May 31.
Artigo em Inglês | MEDLINE | ID: mdl-38908170

RESUMO

Several studies have demonstrated the correlation between Doppler velocimetric parameters of testicular artery and semen quality in domestic species, but in felines data are scarce. This study aimed to correlate the Doppler velocimetry of the testicular artery with sperm kinetics and sperm defects, in sedated and non-sedated cats. Forty tomcats were divided into two groups: sedated (SG; n=20) with dexmedetomidine (10 µm/kg) and ketamine (12 mg/kg), and non-sedated (NSG; n=20). The animals were subjected to ultrasound Doppler velocimetry of the distal supratesticular and marginal region of the testicular artery and subsequently orchiectomized. Epididymal tail spermatozoa were recovered and analyzed using a CASA system for motility, and morphology took place. Animals of SG presented a significantly higher velocity in the marginal region of the cat's testicular artery [peak systolic velocity (PSV) 11.51 cm/s; end-diastolic velocity (EDV) 7.72 cm/s] compared to NSG (PSV 7.72 cm/s, P < 0.001; EDV 4.93 cm/s, P < 0.001). Sedated cats presented higher pulsatility and resistivity indexes than non-sedated cats. The supratesticular PSV of NSG was moderately correlated with major (rs = 0621; P < 0.001) and total sperm defects (rs = 0614; P < 0001). Doppler velocimetry was fairly correlated with minor, major, and total sperm defects. In conclusion, Doppler velocimetric evaluation emerges as an important possibility in the reproductive evaluation of tomcats, once the testicular artery hemodynamics were associated with sperm defects. However, it is advisable to carry out this evaluation in non-sedated animals. If sedation is necessary, peripheral vasoconstriction should be considered.

6.
N Engl J Med ; 2024 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-38828933

RESUMO

BACKGROUND: Belantamab mafodotin had single-agent activity in patients with relapsed or refractory multiple myeloma, a finding that supports further evaluation of the agent in combination with standard-care therapies. METHODS: In this phase 3, open-label, randomized trial, we evaluated belantamab mafodotin, bortezomib, and dexamethasone (BVd), as compared with daratumumab, bortezomib, and dexamethasone (DVd), in patients who had progression of multiple myeloma after at least one line of therapy. The primary end point was progression-free survival. Key secondary end points were overall survival, response duration, and minimal residual disease (MRD)-negative status. RESULTS: In total, 494 patients were randomly assigned to receive BVd (243 patients) or DVd (251 patients). At a median follow-up of 28.2 months (range, 0.1 to 40.0), median progression-free survival was 36.6 months (95% confidence interval [CI], 28.4 to not reached) in the BVd group and 13.4 months (95% CI, 11.1 to 17.5) in the DVd group (hazard ratio for disease progression or death, 0.41; 95% CI, 0.31 to 0.53; P<0.001). Overall survival at 18 months was 84% in the BVd group and 73% in the DVd group. An analysis of the restricted mean response duration favored BVd over DVd (P<0.001). A complete response or better plus MRD-negative status occurred in 25% of the patients in the BVd group and 10% of those in the DVd group. Grade 3 or higher adverse events occurred in 95% of the patients in the BVd group and 78% of those in the DVd group. Ocular events were more common in the BVd group than in the DVd group (79% vs. 29%); such events were managed with dose modifications, and events of worsening visual acuity mostly resolved. CONCLUSIONS: As compared with DVd therapy, BVd therapy conferred a significant benefit with respect to progression-free survival among patients who had relapsed or refractory multiple myeloma after at least one line of therapy. Most patients had grade 3 or higher adverse events. (Funded by GSK; DREAMM-7 ClinicalTrials.gov number, NCT04246047; EudraCT number, 2018-003993-29.).

7.
JACC Adv ; 3(4): 100903, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38939654

RESUMO

Background: Incidence of cryptogenic ischemic stroke (CIS) in young adults is increasing. Early left atrial (LA) myopathy might be 1 of the underlying mechanisms, but this has only been scarcely explored. Objectives: The purpose of this study was to assess the association between increased LA stiffness and CIS in young adults. Methods: In the multicenter SECRETO (Searching for Explanations for Cryptogenic Stroke in the Young: Revealing the Etiology, Triggers, and Outcome) study, LA function was analyzed by speckle tracking echocardiography in 150 CIS patients (aged 18-49 years) and 150 age- and sex-matched controls. Minimum and maximum LA volumes, LA reservoir and contractile strain were measured. LA stiffness was calculated by the ratio: mitral peak E-wave velocity divided by mitral annular e' velocity (E/e')/LA reservoir strain and considered increased if ≥0.22. Increased LA volumes, LA stiffness, and/or reduced LA strain indicated LA myopathy. Logistic regression was used to determine the relation between LA stiffness and CIS and the clinical variables associated with LA stiffness. Results: Increased LA stiffness was found in 36% of patients and in 18% of controls (P < 0.001). Increased LA stiffness was associated with a 2.4-fold (95% CI: 1.1-5.3) higher risk of CIS after adjustment for age, sex, comorbidities, and echocardiographic confounders (P = 0.03). In patients, obesity, pre-CIS antihypertensive treatment, older age, and lower LA contractile strain were all related to increased LA stiffness (all P < 0.05). Conclusions: LA myopathy with increased LA stiffness and impaired LA mechanics more than doubles the risk of CIS in patients under the age of 50 years. This provides new insights into the link between LA dysfunction and CIS at young ages. (Searching for Explanations for Cryptogenic Stroke in the Young: Revealing the Etiology, Triggers, and Outcome [SECRETO]; NCT01934725).

8.
Molecules ; 29(12)2024 Jun 07.
Artigo em Inglês | MEDLINE | ID: mdl-38930795

RESUMO

The need to transition from fossil fuels to renewables arises from factors such as depletion, price fluctuations, and environmental considerations. Lignocellulosic biomass, being abundant, and quickly renewable, and not interfering with food supplies, offers a standout alternative for chemical production. This paper explores the energetic characteristics of two derivatives of furfural-a versatile chemical obtained from biomass with great potential for commercial sustainable chemical and fuel production. The standard (p° = 0.1 MPa) molar enthalpies of formation of the liquids furfurylamine and 5-methylfurfurylamine were derived from the standard molar energies of combustion, determined in oxygen and at T = 298.15 K, by static bomb combustion calorimetry. Their standard molar enthalpies of vaporization were also determined at the same temperature using high-temperature Calvet microcalorimetry. By combining these data, the gas-phase enthalpies of formation at T = 298.15 K were calculated as -(43.5 ± 1.4) kJ·mol-1 for furfurylamine, and -(81.2 ± 1.7) kJ·mol-1 for 5-methylfurfurylamine. Furthermore, a theoretical analysis using G3 level calculations was performed, comparing the calculated enthalpies of formation with the experimental values to validate both results. This method has been successfully applied to similar molecules. The discussion looks into substituent effects in terms of stability and compares them with similar compounds.

9.
Braz J Microbiol ; 55(2): 2035-2041, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38713279

RESUMO

Salmonella spp. and Escherichia coli are implicated in human and animal infections and require antimicrobial treatment in many situations. Faecal samples of healthy white-lipped peccaries (Pecari tajacu) (n = 30) and collared peccaries (Tayassu pecari ) (n = 60) obtained in three farms located in the Midwest Brazil. The antimicrobial profiles of commensal E. coli from P. tajacu and T. pecari from commercial herds in Brazil were isolated and analyzed and virulence genes were detected. Among 90 healthy animals, no Salmonella spp. were isolated. However, 30 samples (27%) tested positive for E. coli, with 18 isolates from P. tajacu and 12 from T. pecari, representing frequencies of 58.0% and 38.7%, respectively. Additionally, other Enterobacteriaceae family bacteria were detected but not included in this analysis. However, individual samples from 30 animals tested positive for E. coli, of which 16 were isolated from P. tajacu presenting multidrug resistance and six were isolated from T. pecari presenting a similar pattern. The E. coli virulence genes detected were papC (pilus-associated pyelonephritis) in five isolates, tsh (temperature-sensitive hemagglutinin) in one isolate, and eae (enteric attachment and effacement) in one isolate. The serum resistance gene, iss (increased serum survival), was detected in four isolates. An association between these genes and the presence of hemolysin was also observed in one isolate. Thus, T. pecari and P. tajacu are potential reservoirs of pathogenic and multidrug-resistant and E. coli. Faecal E. coli of healthy P. tajacu and T. pecari could act as a possible reservoir of antimicrobial resistance genes in environment.


Assuntos
Antibacterianos , Artiodáctilos , Escherichia coli , Fezes , Salmonella , Fatores de Virulência , Animais , Escherichia coli/genética , Escherichia coli/efeitos dos fármacos , Escherichia coli/isolamento & purificação , Escherichia coli/patogenicidade , Escherichia coli/classificação , Salmonella/genética , Salmonella/efeitos dos fármacos , Salmonella/isolamento & purificação , Salmonella/patogenicidade , Salmonella/classificação , Brasil , Fatores de Virulência/genética , Antibacterianos/farmacologia , Fezes/microbiologia , Artiodáctilos/microbiologia , Infecções por Escherichia coli/microbiologia , Infecções por Escherichia coli/veterinária , Infecções por Escherichia coli/epidemiologia , Salmonelose Animal/microbiologia , Virulência/genética , Prevalência , Farmacorresistência Bacteriana/genética , Testes de Sensibilidade Microbiana
10.
Fitoterapia ; 176: 106002, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38729245

RESUMO

Pain and inflammation are major health issues worldwide, leading to negative consequences. Despite several drugs being available to manage these conditions, their effectiveness can be limited by cost, adverse reactions, and potential tolerance and dependence with long-term use. Euphorbia characias traditionally used in folk medicine for its diverse biological activities - including antiproliferative, antimicrobial, and anti-inflammatory effects - has not been extensively studied in vivo for its analgesic and anti-inflammatory properties. In this study, the antinociceptive and anti-inflammatory properties of the water and ethanolic extracts of E. characias flowers (ECAEFl and ECEEFl) were evaluated using various models. Both extracts significantly reduced paw licking time in a formalin-induced paw licking model, with ECAEFl specifically targeting and ECEEFl affecting both the neurogenic and inflammatory phases. Additionally, in the carrageenan-induced cell migration model, both extracts showed a significant decrease in leukocyte migration, protein extravasation and nitric oxide levels, further demostrating their anti-inflammatory activity. High-Resolution HPLC-ESI-QTOF-MS-MS and HPLC-PDA analysis characterized the chemical composition of the extracts, identifying a significant presence of phenolic compounds, particularly quercetin and its derivatives, which likely contribute to the observed biological activities. These findings highlight the potential of E. characias extracts as natural sources of compounds with antinociceptive and anti-inflammatory properties. Further investigations are needed to elucidate the underlying mechanisms and explore their therapeutic potential in pain and inflammation-related disorders.


Assuntos
Analgésicos , Anti-Inflamatórios , Modelos Animais de Doenças , Euphorbia , Flores , Inflamação , Dor Nociceptiva , Extratos Vegetais , Animais , Euphorbia/química , Extratos Vegetais/farmacologia , Extratos Vegetais/química , Camundongos , Anti-Inflamatórios/farmacologia , Analgésicos/farmacologia , Flores/química , Inflamação/tratamento farmacológico , Masculino , Dor Nociceptiva/tratamento farmacológico , Compostos Fitoquímicos/farmacologia , Compostos Fitoquímicos/isolamento & purificação
11.
Epidemiol Infect ; 152: e83, 2024 May 06.
Artigo em Inglês | MEDLINE | ID: mdl-38705586

RESUMO

The mycosis histoplasmosis is also considered a zoonosis that affects humans and other mammalian species worldwide. Among the wild mammals predisposed to be infected with the etiologic agent of histoplasmosis, bats are relevant because they are reservoir of Histoplasma species, and they play a fundamental role in maintaining and spreading fungal propagules in the environments since the infective mycelial phase of Histoplasma grows in their accumulated guano. In this study, we detected the fungal presence in organ samples of bats randomly captured in urban areas of Araraquara City, São Paulo, Brazil. Fungal detection was performed using a nested polymerase chain reaction to amplify a molecular marker (Hcp100) unique to H. capsulatum, which revealed the pathogen presence in organ samples from 15 out of 37 captured bats, indicating 40.5% of infection. Out of 22 Hcp100-amplicons generated, 41% corresponded to lung and trachea samples and 59% to spleen, liver, and kidney samples. Data from these last three organs suggest that bats develop disseminated infections. Considering that infected bats create environments with a high risk of infection, it is important to register the percentage of infected bats living in urban areas to avoid risks of infection to humans, domestic animals, and wildlife.


Assuntos
Quirópteros , Histoplasma , Histoplasmose , Animais , Quirópteros/microbiologia , Brasil/epidemiologia , Histoplasma/genética , Histoplasma/isolamento & purificação , Histoplasmose/epidemiologia , Histoplasmose/veterinária , Histoplasmose/microbiologia , Reação em Cadeia da Polimerase/veterinária
12.
Braz J Microbiol ; 2024 May 14.
Artigo em Inglês | MEDLINE | ID: mdl-38743244

RESUMO

Klebsiella pneumoniae strains are globally associated with a plethora of opportunistic and severe human infections and are known to spread genes conferring antimicrobial resistance. Some strains harbor virulence determinants that enable them to cause serious disease in any patient, both in the hospital and in the community. The aim of this study was to determine the frequency of antimicrobial resistance and virulence traits (by gene detection and string test) among 83 K. pneumoniae isolates obtained from patient cultures of a scholar tertiary hospital in the Midwestern Brazil (Brasília, DF). Antimicrobial susceptibility analysis showed that 94% (78/83) of the isolates presented one of the following resistance profiles: resistant (R, 39), multidrug-resistant (MDR, 29), or extensively drug-resistant (XDR, 10). Several MDR and XDR strains harbored multiple virulence genes and displayed hypermucoviscous phenotype. These characteristics were observed among isolates obtained throughout all the sample collection period (2013 - 2017). The K2 serotype gene, a molecular marker of hypervirulence, was detected in three isolates, one of which classified as XDR. Sequence typing revealed the occurrence of isolates belonged to high-risk (ST13) and multiple resistance-spreading clones (ST105). Thus, our findings showed the occurrence of virulent potential isolates that also presented MDR/XDR phenotypes from 2013 to 2015. This study also indicates the probable convergence of virulence and resistance since at least 2013 in Brazil.

13.
Pediatr Pulmonol ; 2024 May 14.
Artigo em Inglês | MEDLINE | ID: mdl-38742250

RESUMO

Telemonitoring technologies are rapidly evolving, offering a promising solution for remote monitoring and timely management of asthma acute episodes. We aimed to describe current pediatric asthma telemonitoring technologies. A systematic review was conducted until September 2023 on Medline, Scopus, and Web of Science. We included studies of children (0-18 years) with asthma or recurrent wheezing whose respiratory condition was telemonitored outside the healthcare setting. A narrative synthesis was performed. We identified 40 telemonitoring technologies described in 40 studies. The more frequently used technologies for telemonitoring were mobile applications (n = 21) and web-based systems (n = 14). Telemonitoring duration varied between 2 weeks and 32 months. Data collection included asthma symptoms (n = 30), patient-reported outcome measures (PROMs) (n = 11), spirometry/peak flow readings (n = 20), medication adherence (n = 17), inhaler technique (n = 3), air quality (n = 2), and respiratory sounds (n = 2). Both parents and children were the technology target users in most studies (n = 23). Technology training was reported in 23 studies of which 3 provided ongoing support. Automatic feedback was found in 30 studies, mostly related with asthma control. HCP were involved in data management in 27 studies. Technologies were tested in samples from 4 to 327 children, with most studies including school-aged children and/or adolescents (n = 38) and eight including preschool children. This review provides an overview of existing technologies for the outpatient telemonitoring of pediatric asthma. Specific technologies for preschool children represent a gap in the literature that needs to be specifically addressed in future research.

14.
J Fungi (Basel) ; 10(5)2024 May 20.
Artigo em Inglês | MEDLINE | ID: mdl-38786716

RESUMO

Histoplasma capsulatum causes a fungal respiratory disease. Some studies suggest that the fungus requires zinc to consolidate the infection. This study aimed to investigate the influence of zinc and the metal chelator TPEN on the growth of Histoplasma in planktonic and biofilm forms. The results showed that zinc increased the metabolic activity, cell density, and cell viability of planktonic growth. Similarly, there was an increase in biofilm metabolic activity but no increase in biomass or extracellular matrix production. N'-N,N,N,N-tetrakis-2-pyridylmethylethane-1,2 diamine (TPEN) dramatically reduced the same parameters in the planktonic form and resulted in a decrease in metabolic activity, biomass, and extracellular matrix production for the biofilm form. Therefore, the unprecedented observations in this study highlight the importance of zinc ions for the growth, development, and proliferation of H. capsulatum cells and provide new insights into the role of metal ions for biofilm formation in the dimorphic fungus Histoplasma, which could be a potential therapeutic strategy.

15.
Surg Case Rep ; 10(1): 127, 2024 May 22.
Artigo em Inglês | MEDLINE | ID: mdl-38772971

RESUMO

BACKGROUND: Mediastinal paragangliomas are rare. Their dangerousness may unfold during surgery, especially if hormonal activity was previously unknown. We report our experience with this case in context to the incidence and localization of atypically located mediastinal paragangliomas in the literature. CASE PRESENTATION: A 69-year-old female patient who was scheduled for thoracoscopic resection due to a posterior mediastinal tumor that had been progressing in size for several years and increasing symptoms. The induction of anesthesia, the ventilation of the lungs and the gas exchange after lung separation was uneventful. After initially stable circulatory conditions, there was a sudden increase in blood pressure up to 300/130 mmHg and tachycardia up to 130/min. This hypertensive phase was difficult to influence and required a rapid and consistent use of antihypertensive medication to bring down the blood pressure to reasonable values. The patient stabilized after tumor resection. The postoperative course was unremarkable. During the intraoperative blood pressure crisis, blood was drawn for analysis. These samples showed elevated concentrations of normetanephrine and metanephrine. The tumor subsequently presented as a catecholamine-secreting paraganglioma. CONCLUSION: In order to avoid life-threatening blood pressure crises, hormone activity should be ruled out preoperatively in the case of mediastinal tumor, in which a paraganglioma could be considered in the differential diagnosis, especially if there are indications of hypertension in the medical history. Robotic-assisted thoracoscopic resection of the posterior mediastinal tumor was a feasible surgical method, even in the case of unexpected functional paraganglioma.

16.
Mem Inst Oswaldo Cruz ; 119: e230243, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38775551

RESUMO

BACKGROUND: Leishmania tarentolae is a non-pathogenic species found in lizards representing an important model for Leishmania biology. However, several aspects of this Sauroleishmania remain unknown to explain its low level of virulence. OBJECTIVES: We reported several aspects of L. tarentolae biology including glycoconjugates, proteolytic activities and metabolome composition in comparison to pathogenic species (Leishmania amazonensis, Leishmania braziliensis, Leishmania infantum and Leishmania major). METHODS: Parasites were cultured for extraction and purification of lipophosphoglycan (LPG), immunofluorescence probing with anti-gp63 and resistance against complement. Parasite extracts were also tested for proteases activity and metabolome composition. FINDINGS: Leishmania tarentolae does not express LPG on its surface. It expresses gp63 at lower levels compared to pathogenic species and, is highly sensitive to complement-mediated lysis. This species also lacks intracellular/extracellular activities of proteolytic enzymes. It has metabolic differences with pathogenic species, exhibiting a lower abundance of metabolites including ABC transporters, biosynthesis of unsaturated fatty acids and steroids, TCA cycle, glycine/serine/threonine metabolism, glyoxylate/dicarboxylate metabolism and pentose-phosphate pathways. MAIN CONCLUSIONS: The non-pathogenic phenotype of L. tarentolae is associated with alterations in several biochemical and molecular features. This reinforces the need of comparative studies between pathogenic and non-pathogenic species to elucidate the molecular mechanisms of virulence during host-parasite interactions.


Assuntos
Glicoconjugados , Leishmania , Metaboloma , Peptídeo Hidrolases , Leishmania/enzimologia , Peptídeo Hidrolases/metabolismo , Animais , Glicoesfingolipídeos/metabolismo , Proteínas do Sistema Complemento
17.
Cad Saude Publica ; 40(4): e00182323, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38775573

RESUMO

The HIV/AIDS epidemic remains a persistent and real issue, especially in key populations such as men who have sex with men (MSM), travestis and transgender persons. Projects for expanding rapid HIV testing are strategic initiatives aimed at the earliest possible identification of individuals' serological status and thus early treatment, screening of sex partners, and upscaling of preventive actions to interrupt the transmission chain. This study thus maps, describes, and systematizes the projects for expanding rapid HIV testing implemented from 2004 to 2021 in Brazil, highlighting the on-going contribution of civil society organizations and discussing the interoperability and cooperation resulting from public governance processes. We selected 67 documents for analysis, including 30 scientific publications retrieved from electronic databases and 37 documents produced by government institutions and nongovernmental organizations (NGOs). Find Out (Fique Sabendo), I Want to Get Tested (Quero Fazer), The Time is Now (A Hora É Agora), Live Better Knowing (Viva Melhor Sabendo), and Live Better Knowing Young (Viva Melhor Sabendo Jovem) were the projects mapped. Results show that the projects have used strategies adapted to the key population, such as mobile testing units, peer education, and innovative community engagement approaches. Such actions were enabled by effective cooperation and interoperability between participating stakeholders, especially NGOs.


Assuntos
Infecções por HIV , Teste de HIV , Humanos , Brasil/epidemiologia , Infecções por HIV/diagnóstico , Infecções por HIV/prevenção & controle , Infecções por HIV/epidemiologia , Masculino , Teste de HIV/métodos , Programas de Rastreamento/métodos , Homossexualidade Masculina , Feminino , Pessoas Transgênero
18.
Eur J Oncol Nurs ; 70: 102585, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38631125

RESUMO

PURPOSE: Sarcoma, a highly aggressive form of cancer, profoundly affects patients both physically and psychologically. This study aimed to assess sarcoma patients' health-related quality of life and explore their experiences of living with the disease and their specific care requirements. METHODS: This research employed a convergent parallel mixed-methods design. Fifty-two sarcoma patients completed the European Portuguese version of the EORTC QLQ-C30 questionnaire, and seven of them participated in semi-structured interviews. Descriptive measures, Cronbach alpha for internal consistency, t-teste-Anova and stepwise regression were employed in the quantitative analysis. Qualitative data was analysed thematically. RESULTS: The most affected Quality of life (QoL) dimensions were role functioning and global health, areas of functioning that were also described as impacted in patients' experiences. Symptoms like insomnia, pain, and fatigue were frequently reported. Symptoms such as fatigue, pain, and financial difficulty explain QoL variance. No significant differences in QoL were found according to the different forms of treatment. Analysis of the interviews revealed three overarching themes: (1) disruption of daily life, (2) adaptation to life with sarcoma, and (3) the demand for more personalized care, allowing to gain a deeper understanding of living with sarcoma. CONCLUSION: The results underscore the significance of delivering care that enhances the quality of life for sarcoma patients, addressing both their physical and psychosocial needs, and providing personalized support throughout all stages of the disease.


Assuntos
Qualidade de Vida , Sarcoma , Humanos , Sarcoma/psicologia , Sarcoma/terapia , Masculino , Feminino , Pessoa de Meia-Idade , Adulto , Inquéritos e Questionários , Idoso , Adaptação Psicológica , Pesquisa Qualitativa , Portugal , Adulto Jovem , Idoso de 80 Anos ou mais
19.
Rev Port Cardiol ; 2024 Apr 23.
Artigo em Inglês, Português | MEDLINE | ID: mdl-38663529

RESUMO

INTRODUCTION AND OBJECTIVES: Ruling out pulmonary embolism (PE) through a combination of clinical assessment and D-dimer level can potentially avoid excessive use of computed tomography pulmonary angiography (CTPA). We aimed to compare the diagnostic accuracy of the standard approach based on the Wells and Geneva scores combined with a standard D-dimer cut-off (500 ng/ml), with three alternative strategies (age-adjusted and the YEARS and PEGeD algorithms) in patients admitted to the emergency department (ED) with suspected PE. METHODS: Consecutive outpatients admitted to the ED who underwent CTPA due to suspected PE were retrospectively assessed. Sensitivity, specificity, positive and negative predictive values, likelihood ratios and diagnostic odds ratios were calculated and compared between the different diagnostic prediction rules. RESULTS: We included 1402 patients (mean age 69±18 years, 54% female), and PE was confirmed in 25%. Compared to the standard approach (p<0.001), an age-adjusted strategy increased specificity with a non-significant decrease in sensitivity only in patients older than 70 years. Compared to the standard and age-adjusted approaches, the YEARS and PEGeD algorithms had the highest specificity across all ages, but were associated with a significant decrease in sensitivity (p<0.001), particularly in patients aged under 60 years (sensitivity of 81% in patients aged between 51 and 60 years). CONCLUSION: Compared to the standard approach, all algorithms were associated with increased specificity. The age-adjusted strategy was the only one not associated with a significant decrease in sensitivity compared to the standard approach, enabling CTPA requests to be reduced safely.

20.
Microorganisms ; 12(4)2024 Mar 27.
Artigo em Inglês | MEDLINE | ID: mdl-38674612

RESUMO

Microbial resistance to antibiotics poses a significant threat to both human and animal health, necessitating international efforts to mitigate this issue. This study aimed to assess the resistance profiles of Salmonella sp. isolates and identify the presence of intl1, sul1, and blaTEM resistance genes within antigenically characterized isolates, including Agona, Livingstone, Cerro, Schwarzengrund, Salmonella enterica subsp. enterica serotype O:4.5, Anatum, Enteritidis, Johannesburg, Corvallis, and Senftenberg. These isolates underwent susceptibility testing against 14 antibiotics. The highest resistance percentages were noted for sulfamethoxazole (91%), sulfonamides (51%), and ceftiofur (28.9%), while no resistance was observed for ciprofloxacin. Salmonella Johannesburg and Salmonella Corvallis showed resistance to one antibiotic, whereas other serovars were resistant to at least two. Salmonella Schwarzengrund exhibited resistance to 13 antibiotics. The intl1 gene was detected in six out of the ten serovars, and the sul1 gene in three, always co-occurring with intl1. The blaTEM gene was not identified. Our findings highlight the risk posed by the detected multiple resistances and genes to animal, human, and environmental health. The multidrug resistance, especially to third-generation cephalosporins and fluoroquinolones, highlights the need for stringent monitoring of Salmonella in laying hens. The potential of the environment, humans, eggs, and their products to act as vectors for antibiotic resistance represents a significant concern for One Health.

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