ABSTRACT
Mounting experimental and clinical evidence has revealed that adaptive immune mechanisms targeting myocardial antigens are triggered by different forms of cardiac injury and impact disease progression. B and T lymphocytes recognize specific antigens via unique adaptive immune receptors generated through a somatic rearrangement process that generates a potential repertoire of 1019 unique receptors. While the adaptive immune receptor repertoire diversity provides the basis for immunologic specificity, making sense of it can be a challenging task. In the present review, we discuss key aspects underlying the generation of TCRs (T cell receptors) and emerging tools for their study in the context of myocardial diseases. Moreover, we outline how exploring TCR repertoires could lead to a deeper understanding of myocardial pathophysiological principles and potentially serve as diagnostic tools.
Subject(s)
Cardiomyopathies , Receptors, Antigen, T-Cell , Humans , Receptors, Antigen, T-Cell/immunology , Receptors, Antigen, T-Cell/metabolism , Animals , Cardiomyopathies/immunology , Cardiomyopathies/genetics , Cardiomyopathies/metabolism , Adaptive Immunity , T-Lymphocytes/immunology , T-Lymphocytes/metabolism , Myocardium/metabolism , Myocardium/immunology , Myocardium/pathologyABSTRACT
Among the emerging prebiotics, galactooligosaccharide (GOS) has a remarkable value with health-promoting properties confirmed by several studies. In addition, the application of ohmic heating has been gaining prominence in food processing, due to its various technological and nutritional benefits. This study focuses on the transformative potential of ohmic heating processing (OH, voltage values 30 and 60 V, frequencies 100, 300, and 500 Hz, respectively) in prebiotic chocolate milk beverage (3.0 %w/v galactooligosaccharide) processing. Chemical stability of GOS was assessed along all the ohmic conditions. In addition, microbiological analysis (predictive modeling), physical analysis (color and rheology), thermal load indicators assessment, bioactivity values, and volatile compound was performed. HPAEC-PAD analysis confirmed GOS stability and volatile compound evaluation supported OH's ability to preserve flavor-associated compounds. Besides, OH treatments demonstrated superior microbial reduction and decreased thermal load indicators as well as the assessment of the bioactivity. In conclusion, OH presented was able to preserve the GOS chemical stability on chocolate milk beverages processing with positive effects of the intrinsic quality parameters of the product.
Subject(s)
Chocolate , Food Handling , Milk , Oligosaccharides , Oligosaccharides/chemistry , Oligosaccharides/analysis , Chocolate/analysis , Food Handling/methods , Milk/chemistry , Animals , Prebiotics/analysis , Hot Temperature , Beverages/analysis , Rheology , Cacao/chemistry , Volatile Organic Compounds/analysisABSTRACT
Though myocardial infarction (MI) in pigs is a well-established translational large animal model, it has not yet been widely used for immunotherapy studies, and a comprehensive description of the immune response to MI in this species is lacking. We induced MI in Landrace pigs by balloon occlusion of the left anterior descending artery over 90 min. Within 14 days, the necrotic myocardium was progressively replaced by scar tissue with involvement of myofibroblasts. We characterized the immune response in the heart ex vivo by (immuno)histology, flow cytometry, and RNA sequencing of myocardial tissue on days 3, 7, and 14 after MI. Besides a clear predominance of myeloid cells among heart-infiltrating leukocytes, we detected activated T cells and an increasing proportion of CD4+ Foxp3+ regulatory T cells (Treg), especially in the infarct core-findings that closely mirror what has been observed in mice and humans after MI. Transcriptome data indicated inflammatory activity that was persistent but markedly changing in character over time and linked to extracellular matrix biology. Analysis of lymphocytes in heart-draining lymph nodes revealed significantly higher proliferation rates of T helper cell subsets, including Treg on day 7 after MI, compared to sham controls. Elevated frequencies of myeloid progenitors in the spleen suggest that it might be a site of emergency myelopoiesis after MI in pigs, as previously shown in mice. We thus provide a first description of the immune response to MI in pigs, and our results can aid future research using the species for preclinical immunotherapy studies.
Subject(s)
Disease Models, Animal , Myocardial Infarction , Myocardium , T-Lymphocytes, Regulatory , Animals , Myocardial Infarction/immunology , Myocardial Infarction/pathology , T-Lymphocytes, Regulatory/immunology , Myocardium/pathology , Myocardium/immunology , Sus scrofa , Swine , Lymphocyte Activation , Male , Transcriptome , Female , Time FactorsABSTRACT
Myocardial infarction (MI) induces the generation of proinflammatory Ly6Chigh monocytes in the spleen and the recruitment of these cells to the myocardium. CD4+ Foxp3+ CD25+ T-cells (Tregs) promote the healing process after myocardial infarction by engendering a pro-healing differentiation state in myocardial monocyte-derived macrophages. We aimed to study the effects of CD4+ T-cells on splenic myelopoiesis and monocyte differentiation. We instigated MI in mice and found that MI-induced splenic myelopoiesis is abrogated in CD4+ T-cell deficient animals. Conventional CD4+ T-cells promoted myelopoiesis in vitro by cell-cell-contact and paracrine mechanisms, including interferon-gamma (IFN-γ) signalling. Depletion of regulatory T-cells enhanced myelopoiesis in vivo, as evidenced by increases in progenitor cell numbers and proliferative activity in the spleen 5 days after MI. The frequency of CD4+ T-cells-producing factors that promote myelopoiesis increased within the spleen of Treg-depleted mice. Moreover, depletion of Tregs caused a proinflammatory bias in splenic Ly6Chigh monocytes, which showed predominantly upregulated expression of IFN-γ responsive genes after MI. Our results indicate that conventional CD4+ T-cells promote and Tregs attenuate splenic myelopoiesis and proinflammatory differentiation of monocytes.
Subject(s)
Monocytes , Myocardial Infarction , Mice , Animals , Monocytes/metabolism , Myelopoiesis , Spleen/metabolism , Myocardial Infarction/metabolism , T-Lymphocytes, Regulatory/metabolism , Interferon-gamma/pharmacology , Mice, Inbred C57BLABSTRACT
Objetivo: avaliar os fatores associados ao autocuidado praticado por pessoas com estomias de eliminação. Método: estudo transversal analítico, baseado nas respostas de 153 pessoas com estomia de eliminação, atendidas em um ambulatório de referência no cuidado de pessoas com estomas, no município de Teresina. A coleta de dados ocorreu por meio de um formulário semiestruturado com dados demográficos e acerca do autocuidado. Os dados foram analisados mediante estatística descritiva e inferencial. O teste Qui-quadrado de Pearson foi utilizado na análise inferencial. Resultados: o esvaziamento da bolsa, limpeza do estoma, secagem da pele periestoma, descolamento da placa, medição do estoma, realização do molde, adaptação, autoestima e isolamento social apresentaram associação significativa com o autocuidado (p<0,05). Conclusão: evidenciou-se que os fatores associados ao autocuidado foram os cuidados com o estoma e com o equipamento coletor, além dos impactos na autoestima e na vida social(AU)
Objective: to evaluate the factors associated with self-care practiced by people with elimination stomas. Method: analytical cross-sectional study, based on the responses of 153 people with elimination stoma, treated at a reference outpatient clinic for the care of people with stoma, in the city of Teresina. Data collection took place through a semi-structured form with demographic data and about self-care. Analyzes were performed using inferential statistics, using the chi-square test. Results: Emptying the pouch, cleaning the stoma, drying the peristomal skin, detaching the plaque, measuring the stoma, making the mold, fitting, , self-esteem and social isolation were significantly associated with self-care (p<0.05). Conclusion: it was evident that the factors associated with self-care were care for the stoma and the collection equipment, in addition to the impacts on self-esteem and social life(AU)
Objetivo: evaluar los factores asociados al autocuidado practicado por personas con estomas de eliminación. Método: estudio transversal analítico, basado en las respuestas de 153 personas con estoma de eliminación, atendidos en un ambulatorio de referencia para la atención de personas con estoma, en la ciudad de Teresina. Se realizó la recolección de datos a través de un formulario semiestructurado con datos demográficos y sobre autocuidado. Los datos se analizaron utilizando estadística descriptiva e inferencial, utilizando la prueba Chi-cuadrado de Pearson. Resultados: vaciar la bolsa, limpiar la estoma, secar la piel periestomal, despegar la placa, medir la estoma, hacer el molde, adaptarlo, vaciar la bolsa, la autoestima y el aislamiento social se asociaron significativamente con el autocuidado (p<0,05). Conclusión: se evidenció que los factores asociados al autocuidado fueron el cuidado de la estoma y del equipo de recolección, además de los impactos en la autoestima y la vida social(AU)
Subject(s)
Humans , Male , Female , Adult , Middle Aged , Aged , Self Care , Self Concept , Adaptation, Psychological , Surgical Stomas , Chi-Square Distribution , Cross-Sectional Studies , Statistical InferenceABSTRACT
Dairy products stand out as a food matrix susceptible to the contamination of heavy metals via cattle feed and environmental or processing conditions. Specifically, in the case of cheese, the concentrations can be further increased depending on the production process. The artisanal cheese market has been standing out, especially in Brazil, due to cultural and gastronomic reasons. Eight types of Brazilian artisanal cheese were analyzed for metal concentrations (chromium, copper, cadmium, lead, arsenic, and mercury, n = 80, 10 samples of each cheese) using inductively coupled plasma mass spectrometry. Based on the results, a health risk assessment was carried out, based on the determination of estimated daily intake, target hazard quotient (THQ), and hazard index (HI). Variable concentrations were observed between the types of cheese, but in all cases the THQ and HI values were less than 1, indicating an absence of potential risk in the consumption of artisanal cheeses in relation to the intake of heavy metals.
Subject(s)
Arsenic , Cheese , Metals, Heavy , Animals , Cattle , Brazil , Risk AssessmentABSTRACT
This study aimed to estimate the risk of listeriosis from the consumption of pasteurized milk in Brazil, comparing conventional treatment with the technology of thermosonication. The Quantitative Microbiological Risk Assessment (QMRA) model was developed, covering the entire milk production chain, from milking to the moment of consumption. In general, higher risks were observed in association with higher initial concentrations of the pathogen and the vulnerable population. The highest risk predicted (3.67 × 10-5) was related to the scenario considering the initial concentration range of L. monocytogenes between 4 and 6 log CFU/mL, with conventional treatment and considering the vulnerable population, resulting in one case of listeriosis every 27,248 servings. When considering thermosonication treatment, lower risks have been predicted. The scenario analysis indicated that the steps related to storage conditions in retail and at the consumer's home (post-processing steps) are the most influential in the associated risk, in all scenarios. The predictive parameters of inactivation related to the applied treatment also have a considerable influence on the risk. The results point to the influence of the stages of the dairy production chain and the thermosonication treatment applied in the food safety of milk, subsidizing information for industrial application and for regulatory agencies.
Subject(s)
Listeria monocytogenes , Listeriosis , Humans , Animals , Pasteurization , Milk/microbiology , Brazil/epidemiology , Listeriosis/epidemiology , Risk Assessment , Food MicrobiologyABSTRACT
Watermelon (Citrullus lanatus) is a fruit widely consumed by the Brazilian population; however, its rind is usually discarded, despite its nutritional value. This work aimed to develop a watermelon rind flour (WRF) and a fiber-rich bread. The WRF was submitted to microbiological analysis, proximate composition, antioxidant activity, and a profile of phenolic compounds. Six types of bread were developed: three using WRF (20%, 30%, and 40% of wheat flour replacement) and three control samples (only wheat flour), which were submitted to the same analysis, in addition to colorimetric properties, instrumental texture profile, and sensory evaluation (check-all-that-apply, purchase intent, and acceptance test). A high fiber content was observed in WRF (27.15%). The total concentration of phenolic compounds was 2.38 ± 0.20 mg of gallic acid equivalent per g and benzoic acid was the main compound found (73.50 mg/100 g WRF). The results of the antioxidant capacity through the DPPH method indicated a 30% reduction. The WRF 40% bread had 3.06 g of insoluble fiber, characterizing itself as a source of fiber. In the instrumental texture analysis, it was observed that bread hardness increased significantly as the WRF content increased. The formulation of the bread containing WRF is an alternative for the use of waste, favoring the development of a fiber-source product, with a functional food claim.
Subject(s)
Citrullus , Flour , Flour/analysis , Citrullus/chemistry , Triticum/chemistry , Antioxidants/analysis , Fruit/chemistryABSTRACT
AIMS: Agonistic antibodies against neurohumoral receptors can induce cardio-noxious effects by altering the baseline receptor activity. To estimate the prevalence of autoantibodies directed against the beta-1 receptor (b1-AAB) in patients admitted to the hospital for acute heart failure (HF) at (i) baseline and (ii) after 6 months of follow-up (F6) and (iii) after another 12 months of follow-up (i.e. 18 months after index hospitalization), to estimate their prognostic impact on clinical outcome (death or first hospitalization for HF). METHODS AND RESULTS: In 47 patients, b1-AAB were serially determined in serum samples collected at index hospitalization and at 6 months of follow-up (F6) with a flow cytometry-based assay: median age 71 years (quartiles 60, 80), 23 (49%) women, 24 (51%) HF with preserved ejection fraction. Beta1-AAB were detected in three subjects at index hospitalization (6%), and in eight subjects at F6 (17%). There were no differences apparent between patients with and without b1-AAB at F6 with regard to age, sex, type, duration, or main cause of HF. During the 12 month period following F6 (i.e. up to month 18), eight events occurred. Event-free survival was associated with prevalence of b1-AAB at F6. Compared with patients without b1-AAB at F6, age-adjusted Cox regression indicated a higher event risk in patients harbouring b1-AAB, with a hazard ratio of 8.96 (95% confidence interval 1.81-44.50, P = 0.007). CONCLUSIONS: Our results suggest a possible adverse prognostic relevance of b1-AAB in patients with acute HF, but this observation needs to be confirmed in larger patient collectives.
Subject(s)
Heart Failure , Aged , Female , Humans , Male , Heart Failure/epidemiology , Hospitalization , Prevalence , Prognosis , Middle Aged , Aged, 80 and overABSTRACT
In this study, the probability of occurrence of fumonisins in corn in the states of greatest production in Brazil was determined. The data were analyzed through quantitative risk analysis using the Monte Carlo simulation. The results indicated that there is a strong correlation between fumonisins contamination levels and the geographical region due to the influence of climatic characteristics, with temperature having the main influence. The Southern states presented higher risks of occurrence and concentration levels of fumonisins in corn due to the temperate climate with lower average temperature and higher relative humidity and precipitation indices. Cultivation in the best season indicates a significant reduction in the production of fumonisins when this period was evaluated, with average concentration levels up to 42% lower. The generated data are important for regulatory agencies and the agricultural sector, which needs to be aware that the chance of success in grain production depends on efficient planning of the growing season, mainly concerning the climatic conditions to which it is subject to minimize the risks.
ABSTRACT
AIMS: Aging entails profound immunological transformations that can impact myocardial homeostasis and predispose to heart failure. However, preclinical research in the immune-cardiology field is mostly conducted in young healthy animals, which potentially weakens its translational relevance. Herein, we sought to investigate how the aging T-cell compartment associates with changes in myocardial cell biology in aged mice. METHODS AND RESULTS: We phenotyped the antigen-experienced effector/memory T cells purified from heart-draining lymph nodes of 2-, 6-, 12-, and 18-month-old C57BL/6J mice using single-cell RNA/T cell receptor sequencing. Simultaneously, we profiled all non-cardiomyocyte cell subsets purified from 2- to 18-month-old hearts and integrated our data with publicly available cardiomyocyte single-cell sequencing datasets. Some of these findings were confirmed at the protein level by flow cytometry. With aging, the heart-draining lymph node and myocardial T cells underwent clonal expansion and exhibited an up-regulated pro-inflammatory transcription signature, marked by an increased interferon-γ (IFN-γ) production. In parallel, all major myocardial cell populations showed increased IFN-γ responsive signature with aging. In the aged cardiomyocytes, a stronger IFN-γ response signature was paralleled by the dampening of expression levels of transcripts related to most metabolic pathways, especially oxidative phosphorylation. Likewise, induced pluripotent stem cells-derived cardiomyocytes exposed to chronic, low grade IFN-γ treatment showed a similar inhibition of metabolic activity. CONCLUSIONS: By investigating the paired age-related alterations in the T cells found in the heart and its draining lymph nodes, we provide evidence for increased myocardial IFN-γ signaling with age, which is associated with inflammatory and metabolic shifts typically seen in heart failure.
Subject(s)
Heart Failure , Immunosenescence , Mice , Animals , Interferon-gamma , Mice, Inbred C57BL , Aging/genetics , Heart Failure/geneticsABSTRACT
Thermal processes can be very damaging to the nutritional and sensory quality of foods. Non-thermal technologies have been applied to reduce the impact of heat on food, reducing processing time and increasing its efficiency. Among many non-thermal technologies, cold plasma is an emerging technology with several potential applications in food processing. This technique can be used to preserve and sanitize food products, and act as a pre-treatment for drying, extraction, cooking, curing, and hydrogenation of foods. Furthermore, the reacting plasma species formed during the plasma application can change positively the sensory and nutritional aspects of foods. The aim of this review is to analyze the main findings on the application of cold plasma as a pre-treatment technology to improve food processing. In its current maturity stage, the cold plasma technology is suitable for reducing drying time, increasing extraction efficiency, as well as curing meats. This technology can convert unsaturated into saturated fats, without forming trans isomers, which can be an alternative to healthier foods. Although many advantages come from cold plasma applications, this technology still has several challenges, such as the scaling up, especially in increasing productivity and treating foods with large formats. Optimization and control of the effects of plasma on nutritional and sensory quality are still under investigation. Further improvement of the technology will come with a higher knowledge of the effects of plasma on the different chemical groups present in foods, and with the development of bigger or more powerful plasma systems.
Subject(s)
Plasma Gases , Food , Food Handling/methods , Food Quality , Food Preservation/methodsABSTRACT
BACKGROUND: Platelets can infiltrate ischemic myocardium and are increasingly recognized as critical regulators of inflammatory processes during myocardial ischemia and reperfusion (I/R). Platelets contain a broad repertoire of microRNAs (miRNAs), which, under certain conditions such as myocardial ischemia, may be transferred to surrounding cells or released into the microenvironment. Recent studies could demonstrate that platelets contribute substantially to the circulating miRNA pool holding the potential for so far undiscovered regulatory functions. The present study aimed to determine the role of platelet-derived miRNAs in myocardial injury and repair following myocardial I/R. METHODS: In vivo model of myocardial I/R, multimodal in vivo and ex vivo imaging approaches (light-sheet fluorescence microscopy, positron emission tomography and magnetic resonance imaging, speckle-tracking echocardiography) of myocardial inflammation and remodeling, and next-generation deep sequencing analysis of platelet miRNA expression. RESULTS: In mice with a megakaryocyte/platelet-specific knockout of pre-miRNA processing ribonuclease Dicer, the present study discloses a key role of platelet-derived miRNAs in the tightly regulated cellular processes orchestrating left ventricular remodeling after myocardial I/R following transient left coronary artery ligation. Disruption of the miRNA processing machinery in platelets by deletion of Dicer resulted in increased myocardial inflammation, impaired angiogenesis, and accelerated development of cardiac fibrosis, culminating in an increased infarct size by d7 that persisted through d28 of myocardial I/R. Worsened cardiac remodeling after myocardial infarction in mice with a platelet-specific Dicer deletion resulted in an increased fibrotic scar formation and distinguishably increased perfusion defect of the apical and anterolateral wall at day 28 post-myocardial infarction. Altogether, these observations culminated in an impaired left ventricular function and hampered long-term cardiac recovery after experimental myocardial infarction and reperfusion therapy. Treatment with the P2Y12 (P2Y purinoceptor 12) antagonist ticagrelor completely reversed increased myocardial damage and adverse cardiac remodeling observed in DicerPf4∆/Pf4∆ mice. CONCLUSIONS: The present study discloses a critical role of platelet-derived miRNA in myocardial inflammation and structural remodeling processes following myocardial I/R.
Subject(s)
Coronary Artery Disease , MicroRNAs , Myocardial Infarction , Myocardial Ischemia , Myocardial Reperfusion Injury , Mice , Animals , Blood Platelets/metabolism , MicroRNAs/genetics , MicroRNAs/metabolism , Ventricular Remodeling , Myocardial Reperfusion Injury/metabolism , Myocardial Ischemia/metabolism , Myocardial Infarction/pathology , Coronary Artery Disease/metabolism , Inflammation/metabolism , Disease Models, AnimalABSTRACT
La bioética estudia la conducta humana en los campos de las ciencias biológicas y de la atención de la salud. Es imprescindible que el contenido programático de las facultades de ciencias de la salud divulgue su significado e importancia. Todo aquel que pretenda una práctica profesional en la cual interaccione directamente con la vida, debe adquirir competencias desde el campo de la bioética con fundamentos arraigados en los principios éticos de no maleficencia, beneficencia, autonomía y justicia. De tal forma que desarrollen capacidad de reflexión crítica sobre los conflictos éticos provocados por los avances de la ciencia de la vida y la medicina. Cada día se propone más el uso de herramientas audiovisuales en la docencia, para facilitar el abordaje de dilemas éticos, crear espacios de análisis, discusión, que ayudan a la comprensión, memoria e interpretación de este tema entre los estudiantes. En este artículo se pretende divulgar la experiencia a través de una estrategia pedagógica que involucra el cineforo como medio de aprendizaje en bioética en un grupo de estudiantes posgrado en salud. (AU)
Bioethics studies human behavior in the field of biological sciences and health care. It is essential that the programmatic content of the faculties of health sciences disclose its meaning and importance. Anyone who intends a professional practice, in which they interact directly with life, must acquire skills from the field of bioethics with foundations rooted in the ethical principles of non-maleficence, beneficence, autonomy and justice. In such a way that they develop the capacity for critical reflection on the ethical conflicts caused by advances in the science of life and medicine. Every day, the use of audiovisual tools in teaching is proposed more, to make it easier for students to approach ethical dilemmas and create spaces for analysis, discussion, help understanding, memory and interpretation of this topic. This article aims to disseminate the experience through the implementation of a pedagogical strategy that involves cinema and commercial films as a means of learning bioethics in a group of postgraduate health students. (AU)
Subject(s)
Humans , Motion Pictures , Bioethics , Students, Health Occupations , Pandemics , Coronavirus Infections/epidemiologyABSTRACT
BACKGROUND: In the past years, several studies investigated how distinct immune cell subsets affects post-myocardial infarction repair. However, whether and how the tissue environment controls these local immune responses has remained poorly understood. We sought to investigate how antigen-specific T-helper cells differentiate under myocardial milieu's influence. METHODS: We used a transgenic T cell receptor (TCR-M) model and major histocompatibility complex-II tetramers, both myosin-specific, combined with single-cell transcriptomics (single-cell RNA sequencing [scRNA-seq]) and functional phenotyping to elucidate how the antigen-specific CD4+ T cells differentiate in the murine infarcted myocardium and influence tissue repair. Additionally, we transferred proinflammatory versus regulatory predifferentiated TCR-M-cells to dissect how they specially contribute to post-myocardial infarction inflammation. RESULTS: Flow cytometry and scRNA-/TCR-seq analyses revealed that transferred TCR-M cells acquired an induced regulatory phenotype (induced regulatory T cell) in the infarcted myocardium and blunted local inflammation. Myocardial TCR-M cells differentiated into 2 main lineages enriched with either cell activation and profibrotic transcripts (eg, Tgfb1) or suppressor immune checkpoints (eg, Pdcd1), which we also found in human myocardial tissue. These cells produced high levels of LAP (latency-associated peptide) and inhibited IL-17 (interleukin-17) responses. Endogenous myosin-specific T-helper cells, identified using genetically barcoded tetramers, also accumulated in infarcted hearts and exhibited a regulatory phenotype. Notably, TCR-M cells that were predifferentiated toward a regulatory phenotype in vitro maintained stable in vivo FOXP3 (Forkhead box P3) expression and anti-inflammatory activity whereas TH17 partially converted toward a regulatory phenotype in the injured myocardium. Overall, the myosin-specific Tregs dampened post-myocardial infarction inflammation, suppressed neighboring T cells, and were associated with improved cardiac function. CONCLUSIONS: These findings provide novel evidence that the heart and its draining lymph nodes actively shape local immune responses by promoting the differentiation of antigen-specific Tregs poised with suppressive function.
Subject(s)
Myocardial Infarction , T-Lymphocytes, Regulatory , Mice , Animals , Humans , Myocardium/metabolism , Myocardial Infarction/metabolism , Antigens/metabolism , Cell Differentiation , Myosins/metabolism , Receptors, Antigen, T-Cell/genetics , Receptors, Antigen, T-Cell/metabolism , Inflammation/metabolism , Forkhead Transcription Factors/geneticsABSTRACT
Increased aerobic glycolysis is a metabolic hallmark of proinflammatory leukocytes including macrophages and T cells. To take up glucose from the environment and fuel glycolysis, activated leukocytes upregulate the glucose transporter GLUT1. The orally bioavailable selective GLUT1 inhibitor BAY-876 was developed primarily as an anti-tumor drug. Our study assessed its activity on activated macrophages and CD4+ T cells. BAY-876 significantly attenuated glucose uptake by cultured CD4+ T cells and macrophages by 41% and 15%, respectively. Extracellular flux analysis of activated CD4+ T cells in vitro showed that BAY-876 significantly decreases glycolytic proton flux rate and lactate production, effects that are accompanied by an increased oxidative phosphorylation-mediated ATP production rate, leaving intracellular ATP levels per cell unchanged. However, GLUT1 inhibition reduced CD4+ T cell proliferation without compromising cell viability and reduced IFN-γ secretion by 20%. Moreover, TNF secretion from macrophages was reduced by 27%. We conclude that GLUT1-specific inhibitors, like BAY-876, deserve further in vivo testing in a broad range of (auto-) inflammatory disease models.