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2.
Eur Heart J Case Rep ; 8(4): ytae137, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38572016

RESUMO

Background: Systemic lupus erythematosus (SLE) is a chronic autoimmune disease characterized by multisystem inflammation and is a common cause of pericarditis and pericardial effusion, but significant pericardial effusion and cardiac tamponade are rare and even rarer as the first manifestation. Case summary: We report the case of a young male who presented with fever, recurrent pericarditis, and polyserositis with pericardial and bilateral pleural effusion. On examination, he was haemodynamically unstable and the pericardial effusion had considerable dimensions and an urgent pericardiocentesis was performed. Antinuclear antibody with a speckled pattern was positive, complement C4 levels were low, and the remaining autoimmunity and infectious study was unremarkable. Considering the European League Against Rheumatism/American College of Rheumatology classification criteria for SLE, a score of 11 points was obtained, confirming the diagnosis of SLE. Discussion: This case report illustrates a rare form of presentation of SLE, in which the first manifestation was pericarditis with polyserositis and cardiac tamponade.

3.
Cureus ; 16(3): e55573, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38576627

RESUMO

This narrative review explores the application of point-of-care ultrasound (POCUS) in palliative care and its feasibility in home care settings. POCUS has the potential to streamline diagnostic strategies without patient transfer to the hospital, expedite timely symptomatic relief, and reduce complications from specific palliative interventions. The advent of handheld ultrasound devices has made it an attractive diagnostic and interventional adjunct in acute palliative care. POCUS has gained widespread acceptance as part of routine care in emergency medicine and intensive care, guiding certain procedures and increasing their safety. The modernization and miniaturization of ultrasound equipment have made ultra-portable devices available, allowing for better-quality images at affordable prices. Handheld devices have the potential to revolutionize everyday clinical practice in home-based palliative care, contributing to important bedside clinical decisions. Palliative care patients often require diagnostic examinations in the last months of their lives, with CT being the most frequently performed imaging procedure. However, CT imaging is associated with high costs and burdens, leading to increased suffering and impaired quality of life. Clinical ultrasound, a dialogic imaging modality, offers a safer and more efficient approach to palliative care. POCUS applications, which are cost-effective, non-invasive, and well-tolerated, can be used to improve patient satisfaction and diagnostic understanding. POCUS is a valuable tool in palliative care, improving diagnostic accuracy and reducing the time to diagnosis for various pathologies. It is a standard of care for many procedures and improves patient safety. However, there are limitations to POCUS in palliative care, such as operator-dependent examination variability and limited availability of trained professionals. To overcome these limitations, palliative care physicians should receive mandatory training in POCUS, which can be incorporated into the core curriculum. Additionally, ultrasound teleconsulting can assist less experienced examiners in real-time examinations. The literature on POCUS in palliative care is limited, but research on patient-oriented outcomes is crucial. POCUS should be considered a supplement to good clinical reasoning and regulated radiological evaluations.

4.
5.
World J Gastrointest Oncol ; 16(4): 1119-1133, 2024 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-38660635

RESUMO

Colorectal cancer (CRC) is one of the most prevalent malignancies worldwide, being the third most commonly diagnosed malignancy and the second leading cause of cancer-related deaths globally. Despite the progress in screening, early diagnosis, and treatment, approximately 20%-25% of CRC patients still present with metastatic disease at the time of their initial diagnosis. Furthermore, the burden of disease is still expected to increase, especially in individuals younger than 50 years old, among whom early-onset CRC incidence has been increasing. Screening and early detection are pivotal to improve CRC-related outcomes. It is well established that CRC screening not only reduces incidence, but also decreases deaths from CRC. Diverse screening strategies have proven effective in decreasing both CRC incidence and mortality, though variations in efficacy have been reported across the literature. However, uncertainties persist regarding the optimal screening method, age intervals and periodicity. Moreover, adherence to CRC screening remains globally low. In recent years, emerging technologies, notably artificial intelligence, and non-invasive biomarkers, have been developed to overcome these barriers. However, controversy exists over the actual impact of some of the new discoveries on CRC-related outcomes and how to effectively integrate them into daily practice. In this review, we aim to cover the current evidence surrounding CRC screening. We will further critically assess novel approaches under investigation, in an effort to differentiate promising innovations from mere novelties.

6.
Cureus ; 16(3): e55978, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38618380

RESUMO

Dermatomyositis (DM) is an inflammatory myopathy often paraneoplastic in nature. Patients have characteristic cutaneous findings and possible muscle involvement. In the latter, muscle enzymes are elevated, and the electromyogram shows varied changes. Muscle or skin biopsy and myositis-specific antibodies confirm the diagnosis. Here, we report the case of an 86-year-old woman with cutaneous lesions, proximal weakness, and sicca symptoms. Muscle enzymes and electromyogram were normal. Antinuclear antibodies were elevated, and anti-TIF1γ and anti-Ro52 antibodies were positive. Muscle biopsy was compatible with the diagnosis of DM, and salivary gland biopsy confirmed Sjögren's syndrome. Malignancy investigation identified a rectal cancer, which was resected. This case illustrates a rare form of cancer presentation - anti-TIF1γ DM with normal muscle enzymes and electromyogram and concomitant secondary Sjögren's syndrome. Malignancy screening and multidisciplinary management were crucial to a successful approach.

7.
Cureus ; 16(2): e54446, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38510889

RESUMO

Gastrointestinal stromal tumors (GISTs) arise from the gastrointestinal tract. In rare cases, extra-gastrointestinal stromal tumors (EGISTs) occur in the omentum, mesentery, et cetera. They are mostly asymptomatic or have unspecific symptoms. Risk stratification classification systems are based on tumor size, mitotic rate, location, and perforation. The gold standard for diagnosis is a computed tomography (CT) scan. Ultrasound/CT-guided percutaneous biopsy allows histopathology and immunochemistry results (most stain positive for CD117 (c-KIT), CD34, and/or DOG1). Mutational analysis (most are in proto-oncogene c-KIT and platelet-derived growth factor receptor A (PDGFRA)) determines appropriate therapy. Surgical resection is the gold standard of treatment, with adjuvant and neoadjuvant molecular-targeted therapies depending on recurrence risk and mutations. This report describes a rare case of GIST (omentum EGIST) with a rare presentation (acute pyelonephritis) in a 67-year-old woman. Abdominal examination showed tenderness and a positive Murphy sign on the left side. Blood analysis presented microcytic hypochromic anemia, aggravated renal function, leukocytosis, and increased C-reactive protein. Abdominal CT revealed a heterogeneous abdominal mass, and a CT-guided biopsy showed epithelioid cells positive for CD117 and DOG1, which is compatible with a GIST. The patient underwent surgery that determined the GIST's origin from the greater omentum. Histology revealed an epithelioid GIST with large dimensions and a high histologic grade. Genetic testing detected a variant in the PDGFRA gene. With a high risk of progression, the patient received a three-year course of imatinib.

8.
Pacing Clin Electrophysiol ; 47(4): 490-495, 2024 04.
Artigo em Inglês | MEDLINE | ID: mdl-38462714

RESUMO

BACKGROUND: Heart rate score (HRS) ≥ 70% has been associated with arrhythmic events and mortality but these studies were not specific for heart failure (HF) patients. We hypothesized that HRS ≥ 70% obtained from remote monitoring (RM) is associated with HF hospitalizations and arrhythmic events in HF with reduced ejection fraction (HFrEF). METHODS: HRS was calculated from RM in patients with HFrEF and ICD or CRT-D. Two groups were defined: HRS ≥ 70% (G1, n = 55) and HRS < 70% (G2, n = 48) RESULTS: A total of 103 patients were included (64.4 ± 13.04 years, 69.9% male, mean left ventricular ejection fraction (LVEF) 33.62 ± 11.97% and FUP 61.7 ± 38.87 months). The device was CRT-D in 59.2% and ICD in 40.8% and the majority (90.3%) had the device implanted in primary prevention. G1 patients were more frequently male (p = .017) and had more coronary disease (p = .035). HRS ≥70% was an independent predictor for unplanned HF hospitalizations (OR: 1.905 (95% CI: 1.328-3.649), p < .001)). The indication for device implantation (primary vs. secondary prevention), type of device, NYHA class, age, gender and LVEF were not independent predictors of the outcome. VF (4.9 ± 20.0 G1 vs. 1.1 ± 5.47 G2, p = .046) and VT episodes were more prevalent in G1 (3.1 ± 8.93 G1 vs. 0.3 ± 1.59 G2, p = .026), as well as appropriate device shocks (4.3 ± 12.06 G1 vs. 0.3 ± 1.49 G2, p = .023). There was no difference in inappropriate shocks or mortality outcomes between groups. CONCLUSION: HRS ≥70% obtained from RM was an independent predictor of HF hospitalizations and was associated with arrhythmic events with VT and VF episodes and appropriate device shocks in HFrEF patients.


Assuntos
Insuficiência Cardíaca , Disfunção Ventricular Esquerda , Humanos , Masculino , Feminino , Volume Sistólico/fisiologia , Função Ventricular Esquerda/fisiologia , Frequência Cardíaca , Fatores de Risco , Disfunção Ventricular Esquerda/complicações
10.
Molecules ; 29(5)2024 Feb 20.
Artigo em Inglês | MEDLINE | ID: mdl-38474435

RESUMO

Cervical cancer was considered the fourth most common cancer worldwide in 2020. In order to reduce mortality, an early diagnosis of the tumor is required. Currently, this type of cancer occurs mostly in developing countries due to the lack of vaccination and screening against the Human Papillomavirus. Thus, there is an urgent clinical need for new methods aiming at a reliable screening and an early diagnosis of precancerous and cancerous cervical lesions. Vibrational spectroscopy has provided very good results regarding the diagnosis of various tumors, particularly using Fourier transform infrared microspectroscopy, which has proved to be a promising complement to the currently used histopathological methods of cancer diagnosis. This spectroscopic technique was applied to the analysis of cryopreserved human cervical tissue samples, both squamous cell carcinoma (SCC) and non-cancer samples. A dedicated Support Vector Machine classification model was constructed in order to categorize the samples into either normal or malignant and was subsequently validated by cross-validation, with an accuracy higher than 90%.


Assuntos
Carcinoma de Células Escamosas , Neoplasias do Colo do Útero , Feminino , Humanos , Carcinoma de Células Escamosas/patologia , Neoplasias do Colo do Útero/patologia , Espectroscopia de Infravermelho com Transformada de Fourier/métodos
11.
Liver Int ; 44(5): 1075-1092, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38385567

RESUMO

BACKGROUND AND AIMS: The beneficial effect of Hepatitis C virus (HCV) eradication by direct antiviral agents (DAAs) on liver fibrosis is well defined. Despite this, the impact of viral eradication in both hepatic and extra-hepatic metabolic features is underreached. This systematic review aimed to synthesize the evidence on the impact of HCV eradication by DAAs on liver steatosis, carotid atherosclerosis, glucidic impairment, dyslipidaemia, and weight gain. METHODS: A systematic search of the existing literature (up to December 2022) identified 97 original studies that fulfilled the inclusion criteria. RESULTS: Whereas total cholesterol and low-density lipoprotein (LDL) seem to increase after viral eradication, the cardiovascular damage expressed as carotid plaques and intima-media thickness seems to improve. Otherwise, the effect on liver steatosis, glucidic homeostasis, and weight seems to be strictly dependent on the presence of baseline metabolic disorders. CONCLUSION: Despite high heterogeneity and relatively short follow-up of included studies, we can conclude that the presence of metabolic risk factors should be strictly evaluated due to their impact on liver steatosis, glucidic and lipid homeostasis, and on weight gain to better identify patients at risk of liver disease progression despite the virus eradication.


Assuntos
Doenças das Artérias Carótidas , Fígado Gorduroso , Hepatite C Crônica , Hepatite C , Humanos , Antivirais/uso terapêutico , Hepacivirus , Espessura Intima-Media Carotídea , Hepatite C Crônica/tratamento farmacológico , Fígado Gorduroso/induzido quimicamente , Hepatite C/tratamento farmacológico , Doenças das Artérias Carótidas/induzido quimicamente , Doenças das Artérias Carótidas/tratamento farmacológico , Aumento de Peso
12.
Rev. psicol. clín. niños adolesc ; 11(1): 1-7, Ene. 2024. tab
Artigo em Inglês | IBECS | ID: ibc-230067

RESUMO

Psychologists’ attitudes towards Evidence-Based Practices (EBPs) may have an impact in adhering to such practices. The purpose of this study was to analyse the psychometric characteristics of the Portuguese version of the Evidence Based Practice Attitude Scale (EBPAS) (Aarons, 2004). This study also aims to characterize the attitudes of psychologists working in the field of child mental health and analyze the differences in these attitudes according to therapeutic approaches and professional experience. A sample of 71 (93% female) Portuguese psychologists (age M = 37.07, SD = 10.68) completed an online assessment protocol that included the EBPAS and a questionnaire assessing sociodemographic information, therapeutic approaches, and professional experience. The results support the construct validity and reliability of the measure. Portuguese psychologists seem to have more favorable attitudes towards EBPs compared to samples from other countries. When evaluating the differences in these attitudes considering the different variables, the results indicate that psychologists adopting a Cognitive-Behavioral orientation and with less years of professional experience show more favorable attitudes towards EBPs. This research contributes to a wider understanding about the factors that may influence psychologists’ attitudes towards EBPs and thus allow for more effective dissemination and implementation efforts. (AU)


Las actitudes de los psicólogos hacia las Prácticas Basadas en la Evidencia (PBE) pueden tener un impacto en la adhesión a dichas prácticas. El propósito de este estudio fue analizar las características psicométricas de la versión portuguesa de la Escala de Actitudes hacia las Prácticas Basadas en la Evidencia (EBPAS) (Aarons, 2004). Este estudio también pretende caracterizar las actitudes de los psicólogos que trabajan en el área de la salud mental infantil y analizar las diferencias en estas actitudes según los enfoques terapéuticos y la experiencia profesional. Una muestra de 71 (93% mujeres) psicólogos portugueses (edad M = 37.07, DP = 10.68) completaron una evaluación online, incluyendo un cuestionario para recoger información relacionada con las características socio-demográficas del psicólogo, su formación académica y experiencia profesional y el EBPAS. Los resultados apoyan la validez de constructo y la fiabilidad de la medida. Los psicólogos portugueses parecen revelar actitudes más favorables hacia los EBP en comparación con las muestras de otros países. Al evaluar las diferencias en estas actitudes considerando las diferentes variables, los resultados indican que los psicólogos que adoptan una orientación cognitivo-conductual y con menos años de experiencia profesional muestran actitudes más favorables hacia las PBE. Esta investigación contribuye a un mayor conocimiento de las variables que pueden influir en las actitudes de los psicólogos hacia las PBE y, por tanto, permite realizar esfuerzos de difusión e implementación más eficaces. (AU)


Assuntos
Humanos , Masculino , Feminino , Criança , Adulto Jovem , Adulto , Pessoa de Meia-Idade , Idoso , Prática Clínica Baseada em Evidências , Psicologia/tendências , Psicometria , Saúde Mental , Conhecimentos, Atitudes e Prática em Saúde , Portugal , Levantamentos de Bibliotecas
13.
Rev Esp Enferm Dig ; 2024 Jan 11.
Artigo em Inglês | MEDLINE | ID: mdl-38205695

RESUMO

A 23-year-old male from Brazil presented with bright red hematochezia. Proctological examination revealed grade II internal hemorrhoids, but flexible sigmoidoscopy uncovered a 6 mm-pedunculated polyp in the sigmoid colon, which was found to result from inflammatory reaction to Schistosoma mansoni egg deposition. The patient had no signs of portal hypertension and was successfully treated with praziquantel. This case underscores a rare presentation of chronic intestinal schistosomiasis and emphasizes the role of early diagnosis in preventing severe hepatic sequelae of chronic Schistosoma infection.

14.
BMC Public Health ; 24(1): 275, 2024 01 23.
Artigo em Inglês | MEDLINE | ID: mdl-38263005

RESUMO

BACKGROUND: Unhealthful dietary patterns have been consistently associated with low levels of physical activity (PA), but studies dedicated to sedentary behavior (SB) are scarce, especially in adults. The few studies that investigated the association between SB and dietary patterns focused mostly on specific types of SB, such as TV-watching or screen time. SB can be accumulated in distinct domains (i.e., work, transport, and leisure-time), thus, it is key to investigate in depth the impact that different domains of SB can have on eating-related indicators. We aimed to investigate the associations between different SB domains and eating-related indicators, in a sample of adults. METHODS: Cross-sectional data from students, teachers, and staff from a Portuguese University was collected in November/2021 through an anonymous online survey. Data analyses were performed using the IBM SPSS software (version 28.0) and included descriptive statistics, partial correlations, and group comparisons using one-way ANOVA. Daily average SB at work/study, transport, and in leisure-time were self-reported and eating-related indicators were measured with several items from the Mediterranean Diet Score. Specific eating-related behaviors reflecting a protective eating pattern (e.g., eating breakfast regularly), and eating behavior traits (e.g., external eating) were also assessed. Body mass index (BMI) was calculated as weight (kg)/height(m)2. The International Physical Activity Questionnaire/Short-Form was used to assess PA. RESULTS: The sample included 301 adults (60.1% women), with a mean age of 34.5 years. Overall, leisure-time SB was inversely associated with adherence to the Mediterranean diet (r = -0.20; p < 0.001) and with a protective eating profile (r = -0.31; p < 0.001). Higher transport SB was also related to lower adherence to the Mediterranean diet (r = -0.20; p < 0.001) and to an unhealthier eating profile (r = -0.22; p < 0.001), but no associations were found for work-related SB (p > 0.05). These results persisted after the adjustment for BMI, sex, and self-reported PA. These results were impacted by the age tertile. CONCLUSIONS: Our findings suggest that adults with higher levels of SB in leisure-time and transport domains tend to report less healthy eating-related behaviors, irrespective of BMI, sex, and PA level. However, some differences in these associations were found according to the age tertile. This information may assist public health authorities in focusing their efforts in augmenting literacy on SB, namely on how SB can be accumulated via different settings. Furthermore, public health literacy efforts need to extend besides the more known deleterious effects of SB on health (e.g., diabetes, cardiovascular disease), to also include the interplay with eating indicators. Strategies to reduce SB and unhealthy eating should be particularly focused on promoting physically active forms of commuting and reducing SB in the leisure setting.


Assuntos
Desjejum , Comportamento Sedentário , Adulto , Humanos , Feminino , Masculino , Estudos Transversais , Análise de Variância , Índice de Massa Corporal
15.
Int J Legal Med ; 138(2): 685-691, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-37347275

RESUMO

Access to better health care anticipates that more medical devices can be found alongside skeletal remains. Those employed in oral rehabilitation, with available brands or batch/series, can prove useful in the identification process. A previous study in the Colecção de Esqueletos Identificados Século XXI described macroscopically the dental prostheses. An unusual case of a dental device with chromatic alterations demonstrated to require a more detailed analysis. The individual, a 53-year-old male, exhibited, at both arches, a fixed tooth-supported rehabilitation, with gold colouring classified initially as a gold-palladium alloy. Simultaneously, a green pigmentation deposit was observable in bone and prosthesis. This investigation aimed to verify the elemental composition of the dental prosthesis alloy. Elemental analysis was performed by X-ray fluorescence in two regions (labial surface of the prosthetic crown and the root surface of the lower right lateral incisor). Both the spectra and the qualitative results found higher levels of copper and aluminium, followed by nickel, iron, zinc, and manganese. No gold or palladium was detected. The most probable assumption is that a copper-aluminium alloy was used, as its elemental concentration corresponds to those measured in similar devices. Dental prostheses of copper-aluminium alloys have been made popular since the 1980s, particularly in the USA, Japan, and Eastern Europe. Apart from the biographical information, it was also known that the individual's place of birth was an Eastern European country, which highlighted the usefulness of this type of information when dealing with missing people cases.


Assuntos
Prótese Dentária , Paládio , Masculino , Humanos , Pessoa de Meia-Idade , Raios X , Portugal , Paládio/análise , Cobre/análise , Alumínio/análise , Fluorescência , Incisivo , Ligas de Ouro/análise
16.
J Sci Food Agric ; 104(4): 2336-2345, 2024 Mar 15.
Artigo em Inglês | MEDLINE | ID: mdl-37968966

RESUMO

BACKGROUND: Motivational eating behavior traits (i.e. eating motivations and intuitive eating) have an important role in body weight regulation, as do food reward processes. Their associations might help explain different responses to food stimulus in the current environment but have never been explored. This study's primary goal was to investigate food reward associations with eating motivations, intuitive eating dimensions and body mass index in former Portuguese elite athletes with overweight/obesity. As a first step, a cultural adaptation of the Leeds Food Preference Questionnaire (LFPQ) was created and validated in an online-surveyed Portuguese sample. RESULTS: Step 1: Analysis from an online survey (N = 348; 69.8% female) conducted to validate the food images from the cultural adaptation of the LFPQ showed that most food images were properly recognized in terms of their fat and sweet content by the Portuguese population, except for some savory items. Step 2: Regarding our primary analysis in 94 former elite athletes with overweight/obesity, self-determined motivations to regulate eating and (to a lower extent) more body-food congruent choices (both markers for healthier eating behaviors) were associated with more favorable food reward outcomes, as opposed to non-self-determined motivations. Less emotional (more intuitive) eaters presented higher implicit wanting for low-fat sweet foods compared to more emotional eaters. CONCLUSION: These findings suggest LFPQ usefulness to evaluate food preferences and detect relevant associations between food reward and motivational eating behavior traits in former elite athletes with overweight/obesity. Health professionals are encouraged to create need-supportive environments that foster self-determined motivations and help individuals make healthier food choices. © 2023 Society of Chemical Industry.


Assuntos
Motivação , Sobrepeso , Humanos , Feminino , Masculino , Índice de Massa Corporal , Portugal , Comportamento Alimentar/fisiologia , Comportamento Alimentar/psicologia , Preferências Alimentares/psicologia , Obesidade , Recompensa , Atletas , Inquéritos e Questionários , Ingestão de Alimentos
17.
Nutrition ; 118: 112258, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38007995

RESUMO

OBJECTIVE: The aim of this study was to compare self-reported total energy intake (TEI) collected using an online multiple-pass 24-h dietary recall tool (Intake24) with total energy expenditure (TEE) estimated from Fitbit Charge 2-improved algorithms in adults from the NoHoW trial (12-mo weight maintenance after free-living weight loss). METHODS: Bland-Altman plots were used to assess the level of agreement between TEI and TEE at baseline and after 12 mo. The ratio of TEI to TEE was also calculated. RESULTS: Data from 1323 participants (71% female) was included in the analysis (mean ± SD: age 45 ± 12 y, body mass index 29.7 ± 5.4 kg/m2, initial weight loss 11.5 ± 6.5 kg). The TEI was lower than TEE on average by 33%, with limits of agreement ranging from -91% to +25%. Men, younger individuals, those with higher body mass index, those with the greater weight loss before enrollment, and those who gained weight during the study underestimated to a greater extent. CONCLUSIONS: These findings contribute to the ongoing research examining the validity of technology-based dietary assessment tools.


Assuntos
Ingestão de Energia , Monitores de Aptidão Física , Adulto , Masculino , Humanos , Feminino , Pessoa de Meia-Idade , Autorrelato , Metabolismo Energético , Redução de Peso
18.
JACC Case Rep ; 26: 102061, 2023 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-38094176

RESUMO

A young man presented with acute stabbing chest pain. A 12-lead electrocardiogram revealed electrical alternans with phasic variation of the QRS amplitude in all leads. Lung auscultation revealed absent left hemithorax breath sounds. Chest radiography confirmed a left-sided tension pneumothorax. Tension pneumothorax is a very rare cause for electrical alternans. (Level of Difficulty: Intermediate.).

19.
Int J Mol Sci ; 24(23)2023 Nov 28.
Artigo em Inglês | MEDLINE | ID: mdl-38069204

RESUMO

Innovative strategies to control malaria are urgently needed. Exploring the interplay between Plasmodium sp. parasites and host red blood cells (RBCs) offers opportunities for novel antimalarial interventions. Pyruvate kinase deficiency (PKD), characterized by heightened 2,3-diphosphoglycerate (2,3-DPG) concentration, has been associated with protection against malaria. Elevated levels of 2,3-DPG, a specific mammalian metabolite, may hinder glycolysis, prompting us to hypothesize its potential contribution to PKD-mediated protection. We investigated the impact of the extracellular supplementation of 2,3-DPG on the Plasmodium falciparum intraerythrocytic developmental cycle in vitro. The results showed an inhibition of parasite growth, resulting from significantly fewer progeny from 2,3-DPG-treated parasites. We analyzed differential gene expression and the transcriptomic profile of P. falciparum trophozoites, from in vitro cultures subjected or not subjected to the action of 2,3-DPG, using Nanopore Sequencing Technology. The presence of 2,3-DPG in the culture medium was associated with the significant differential expression of 71 genes, mostly associated with the GO terms nucleic acid binding, transcription or monoatomic anion channel. Further, several genes related to cell cycle control were downregulated in treated parasites. These findings suggest that the presence of this RBC-specific glycolytic metabolite impacts the expression of genes transcribed during the parasite trophozoite stage and the number of merozoites released from individual schizonts, which supports the potential role of 2,3-DPG in the mechanism of protection against malaria by PKD.


Assuntos
Malária Falciparum , Parasitos , Animais , 2,3-Difosfoglicerato/metabolismo , Ácidos Difosfoglicéricos/metabolismo , Malária Falciparum/genética , Malária Falciparum/metabolismo , Plasmodium falciparum/genética , Glicólise/genética , Eritrócitos/metabolismo , Expressão Gênica , Mamíferos
20.
Artigo em Inglês | MEDLINE | ID: mdl-37998293

RESUMO

The Health Assessment Questionnaire Disability Index (HAQ-DI) was completed with five visual analog scales to assess systemic sclerosis (SSc) called Scleroderma HAQ (SHAQ). We performed a validation of the European Portuguese version of SHAQ for patients with SSc. Patients with different forms of SSc from five Hospital Centers were invited. The reliability of the Portuguese SHAQ was evaluated by internal consistency and by test-retest reliability. Content validity was checked by two rheumatologists and by a panel of patients. Construct validity was assessed by structural validity and by known-groups hypothesis tests. Criterion validity was addressed with selected dimensions from the UCLA GIT 2.0, the SF-36v2, and the EuroQoL EQ-5D-5L. A total of 102 SSc patients agreed to participate, 31 of which answered to the retest. HAQ-DI demonstrated high internal consistency reliability (α = 0.866) and SHAQ also showed high test-retest reliability (ICC 0.61-0.95). We evidenced the unidimensionality of all VASs. HAQ-DI scores were worse in males, patients older than 65 years, and individuals with a diffuse form of SSc. Criterion validity was mainly evidenced through the correlation between the HAQ-DI and SF-36v2 physical summary measure (r = -0.688) and EQ-5D-5L index score (r = -0.723). Likewise, the SHAQ overall disease severity VAS was also correlated with SF-36v2 physical summary measure (r = -0.628). Mental score correlations were smaller. With the exception of the Raynaud's VAS, all the other VASs correlated well with similar clinical variables. This paper provides evidence to demonstrate how reliable and valid the European Portuguese version of SHAQ is, to be used in SSc patients to assess the clinical severity under the perspective of patients.


Assuntos
Escleroderma Sistêmico , Masculino , Humanos , Reprodutibilidade dos Testes , Portugal , Inquéritos e Questionários , Índice de Gravidade de Doença , Escleroderma Sistêmico/diagnóstico , Qualidade de Vida , Avaliação da Deficiência
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