225 results on '"António Cabrita"'
Search Results
2. In Vitro Characterization of Reversine-Treated Gingival Fibroblasts and Their Safety Evaluation after In Vivo Transplantation
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Carlos Miguel Marto, Mafalda Laranjo, Ana Cristina Gonçalves, Anabela Paula, Joana Jorge, Rui Caetano-Oliveira, Maria Inês Sousa, Bárbara Oliveiros, João Ramalho-Santos, Ana Bela Sarmento-Ribeiro, Manuel Marques-Ferreira, António Cabrita, Maria Filomena Botelho, and Eunice Carrilho
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cell dedifferentiation ,reversine ,gingival fibroblasts ,stem-like cells ,regenerative dentistry ,Pharmacy and materia medica ,RS1-441 - Abstract
Reversine is a purine derivative that has been investigated with regard to its biological effects, such as its anticancer properties and, mostly, its ability to induce the dedifferentiation of adult cells, increasing their plasticity. The obtained dedifferentiated cells have a high potential for use in regenerative procedures, such as regenerative dentistry (RD). Instead of replacing the lost or damaged oral tissues with synthetic materials, RD uses stem cells combined with matrices and an appropriate microenvironment to achieve tissue regeneration. However, the currently available stem cell sources present limitations, thus restricting the potential of RD. Based on this problem, new sources of stem cells are fundamental. This work aims to characterize mouse gingival fibroblasts (GFs) after dedifferentiation with reversine. Different administration protocols were tested, and the cells obtained were evaluated regarding their cell metabolism, protein and DNA contents, cell cycle changes, morphology, cell death, genotoxicity, and acquisition of stem cell characteristics. Additionally, their teratoma potential was evaluated after in vivo transplantation. Reversine caused toxicity at higher concentrations, with decreased cell metabolic activity and protein content. The cells obtained displayed polyploidy, a cycle arrest in the G2/M phase, and showed an enlarged size. Additionally, apoptosis and genotoxicity were found at higher reversine concentrations. A subpopulation of the GFs possessed stem properties, as supported by the increased expression of CD90, CD105, and TERT, the existence of a CD106+ population, and their trilineage differentiation capacity. The dedifferentiated cells did not induce teratoma formation. The extensive characterization performed shows that significant functional, morphological, and genetic changes occur during the dedifferentiation process. The dedifferentiated cells have some stem-like characteristics, which are of interest for RD.
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- 2024
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3. ANCA-associated vasculitis and Igg4-related disease: An overlap syndrome or two distinct diseases?
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Inês Sala, Joana Freitas, João Oliveira, Josefina Santos, Ana Castro, and António Cabrita
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Diseases of the genitourinary system. Urology ,RC870-923 - Published
- 2023
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4. Proteinase 3 (PR3)-Antineutrophil Cytoplasmic Antibody in a Patient with Minimal Change Disease: An Unusual Finding
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Joana Freitas, Inês Sala, João Oliveira, Andreia Campos, Sofia Santos, Josefina Santos, and António Cabrita
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antibodies ,antineutrophil cytoplasmic ,nephrosis ,lipoid ,nephrotic syndrome ,Pathology ,RB1-214 - Abstract
Antineutrophil cytoplasmic antibodies (ANCA) are useful as markers for systemic vasculitis. PR3-ANCA antibodies have been also identified in association with chronic inflammatory and infectious conditions, other autoimmune diseases, malignancy, and certain drugs. The association of PR3 and minimal change disease (MCD) without vasculitis is not an expected finding. We report a case of MCD with PR3-ANCA positive title and no histopathological findings of vasculitis. This reports to an 86-year-old Caucasian woman without relevant past medical history and a normal renal function one month before presentation with sudden-onset nephrotic syndrome and rapidly progressive renal failure. Renal ultrasound was normal. Autoimmune screening using enzyme-linked immunosorbent assay (ELISA) revealed PR3-ANCA high titers (238.7UQ). Renal biopsy did not show vasculitis or crescentic glomerulonephritis. The glomeruli were normal. Autoimmune, inflammatory, infectious and malignant diseases were excluded. MCD was assumed and she started prednisolone with clinical and analytical improvement. ANCA-associated glomerular disease can coexist with a variety of other glomerular diseases including membranous nephropathy, lupus nephritis, IgA nephropathy, and bacterial infection-related glomerulonephritis. This association could be an incidental finding, but there may be an association with MCD not previously reported. Our case emphasizes the importance of performing renal biopsies before embarking on a full-scale immunosuppression therapy based on ANCA title alone.
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- 2022
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5. Refractory diffuse podocytopathy
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João Oliveira, Inês Sala, Joana Freitas, Joana Tavares, Sofia Santos, Andreia Campos, Josefina Santos Lascasas, Teresa Mendonça, and António Cabrita
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Pathology ,RB1-214 ,Internal medicine ,RC31-1245 ,Other systems of medicine ,RZ201-999 - Published
- 2023
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6. An unusual cause of new-onset ascites and apparent severe acute kidney injury
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João Oliveira, Miguel Costa, Joana Freitas, Inês Sala, Sofia Santos, and António Cabrita
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Diseases of the genitourinary system. Urology ,RC870-923 - Published
- 2022
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7. Diagnostic challenge of recurrent macrophage activation syndrome before and after kidney transplant
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Joana Tavares, Filipa Silva, Ana Castro, Josefina Santos, Guilherme Rocha, Manuela Almeida, La Salete Martins, Leonídio Dias, António Castro Henriques, and António Cabrita
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Diseases of the genitourinary system. Urology ,RC870-923 - Published
- 2021
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8. C3 glomerulopathy associated to B-cell chronic lymphocytic leukemia
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Filipa Silva, Joana Tavares, Rita Pinho Peixeiro, João Oliveira, Diana Fernandes, Ana Castro, Sofia Santos, Rita Coutinho, Cristina Freitas, Josefina Santos, João Pedro Pimentel, Jorge Coutinho, and António Cabrita
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Diseases of the genitourinary system. Urology ,RC870-923 - Published
- 2022
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9. COVID-19 in kidney transplant recipients: what have we learned one year later? A cohort study from a tertiary center
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Joana Tavares, João Pedro Oliveira, Pedro Reis, Bárbara Ribeiro, Filipa Silva, Jorge Malheiro, Manuela Almeida, La Salete Martins, António Cabrita, António Castro Henriques, and Leonídio Dias
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Acute Kidney Injury ,Renal Insufficiency, Chronic ,COVID-19 ,Immunosuppression ,Kidney Transplantation ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Abstract Introduction: Kidney transplant (KT) recipients have a high risk for adverse outcomes from infections, such as COVID-19. Methods: We have retrospectively reviewed all KT recipients with documented COVID-19 between March 1, 2020, and March 15, 2021, and analyzed patients’ characteristics, clinical course, treatment, and outcomes. Results: We identified 123 patients, 72% were male, with a mean age of 54.5±13.0 years. Twenty percent were asymptomatic, 7% had a nosocomial transmission, and 36% of the remainder required hospitalization. Almost all admitted patients received oxygen, 30% required invasive mechanical ventilation (IMV), more than a half had acute kidney injury, with 10% requiring dialysis, and 20% died. Incidence was comparable to that of the Portuguese population, but the mortality rate was almost four times higher (SMR of 3.768 (95% CI:1.723-7.154). Higher body mass index (OR 1.275, P=0.001), lower baseline graft function (OR 0.968, P=0.015), and nosocomial transmission (OR 13.836, P=0.019) were associated with oxygen demand, whereas female gender (OR 3.801, P=0.031) and lower baseline kidney graft function (OR 0.955, P=0.005), but not body mass index, were associated with IMV and/or death. Conclusion: Mortality rate in KT patients was higher than in the general population and lower baseline kidney function was the most consistent marker for adverse outcomes.
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- 2022
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10. Different kidney function trajectory patterns before dialysis in elderly patients: clinical implications and outcomes
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Josefina Santos, Pedro Oliveira, Milton Severo, Luísa Lobato, António Cabrita, and Isabel Fonseca
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ckd ,eskd ,outcomes ,renal function trajectory ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Background. Identifying trajectories of kidney disease progression in chronic kidney disease (CKD) patients may help to deliver better care. We aimed to identify and characterize trajectories of renal function decline in CKD patients and to investigate their association with mortality after dialysis. Methods. This retrospective cohort study included 378 CKD patients who initiated dialysis (aged 65 years and over) between 2009 and 2016. Were considered mixed models using linear quadratic and cubic models to define the trajectories, and we used probabilistic clustering procedures. Patient characteristics and care practices at and before dialysis were examined by multivariable multinomial logistic regression. The association of these trajectories with mortality after dialysis was examined using Cox models. Results. Four distinct groups of eGFR trajectories decline before dialysis were identified: slower decline (18.3%), gradual decline (18.3%), early rapid decline (41.2%), and rapid decline (22.2%). Patients with rapid eGFR decline were more likely to have diabetes, more cognitive impairment, to have been hospitalized before dialysis, and were less likely to have received pre-dialysis care compared to the patients with a slower decline. They had a higher risk of death within the first and fourth year after dialysis initiation, and after being more than 4 years in dialysis. Conclusions. There are different patterns of eGFR trajectories before dialysis initiation in the elderly, that may help to identify those who are more likely to experience an accelerated decline in kidney function, with impact on pre ESKD care and in the mortality risk after dialysis.
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- 2021
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11. A Case of Peritoneal Dialysis-Related Peritonitis Caused by Ewingella americana
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Catarina Abrantes, Joana Freitas, Tânia Silva, Luís Marques da Silva, Maria João Carvalho, Anabela Rodrigues, and António Cabrita
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Infectious and parasitic diseases ,RC109-216 - Abstract
Peritoneal dialysis (PD)-related peritonitis is a frequent complication. PD units should be aware of all possible pathogens and share their experience about prevention and optimal management. Uncommon bacteria, a special group with crescent incidence in PD practice, may require singular considerations. A case of peritonitis due to Ewingella americana, a rare human pathogen, is reported, with a favorable outcome. To date, only three other cases have been described in the literature. New evidence is necessary for a better understanding of this pathogen and its consequences in PD modality.
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- 2022
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12. Does Cystatin C have a role as metabolic surrogate in peritoneal dialysis beyond its association with residual renal function?
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Carla Leal Moreira, Liliana Cunha, Sofia Correia, Filipa Silva, Ana Castro, Joana Tavares, Maria João Carvalho, José Carlos Oliveira, Olívia Santos, António Cabrita, and Anabela Rodrigues
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Cystatin C ,Cardiovascular Diseases ,Peritoneal Dialysis ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
ABSTRACT Introduction: It has been suggested that cystatin C levels are modified by obesity and inflammation. Furthermore, cystatin C has been associated with cardiovascular events and mortality outcomes. Aim: To study the association of cystatin C with the metabolic profile and cardiovascular disease of peritoneal dialysis patients. Methods: Data collected included clinical, laboratorial, and multifrequency bioimpedance assessment of 52 stable peritoneal dialysis patients. Minimal residual renal function was defined as > 2mL/min/1.73m2. Results: Serum cystatin C was not significantly associated with peritoneal or urinary cystatin C excretion. Negative correlation of cystatin C with normalized protein catabolic rate (rho -0.33, p = 0.02) and a trend towards positive correlation with relative body fat (rho 0.27, p = 0.05) were not independent from residual renal function. Cystatin C was not significantly associated with cardiovascular disease (p = 0.28), nor with glycated hemoglobin (p = 0.19) or c-reactive protein (p = 0.56). In the multivariate model, both age and diabetes were the strongest predictors of cardiovascular disease (odds ratio 1.09, p = 0.029 and odds ratio 29.95, p = 0.016, respectively), while relative body fat was negatively associated with cardiovascular disease (p = 0.038); neither cystatin C (p = 0.096) nor minimal residual renal function (p = 0.756) reached a significant association with cardiovascular disease. Conclusions: In this group of peritoneal dialysis patients, cystatin C did not correlate with the metabolic or inflammatory status, nor cardiovascular disease, after adjustment for residual renal function.
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- 2019
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13. Predicting 6-Month Mortality in Incident Elderly Dialysis Patients: A Simple Prognostic Score
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Josefina Santos, Pedro Oliveira, Jorge Malheiro, Andreia Campos, Sofia Correia, António Cabrita, Luísa Lobato, and Isabel Fonseca
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elderly ,end-stage renal disease ,dialysis ,prognosis score ,shared decision making ,Dermatology ,RL1-803 ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Aim: Mortality in end-stage renal disease (ESRD) remains high, particularly among elderly, who represents the most rapidly growing segment of the ESRD population in wealthier countries. We developed and validated a risk score in elderly patients to predict 6-month mortality after dialysis initiation. Methods: We used data from a cohort of 421 patients, aged 65 years and over who started dialysis between 2009 and 2016, in our Nephrology department. The predictive score was developed using a multivariable logistic regression analysis. A bootstrapping technique was used for internal validation. Results: The overall mortality within 6 months was 14.0%. Five independent predictors were identified, and a points system was constructed: age 75 years or older (2 points), coronary artery disease (2), cerebrovascular disease with hemiplegia (2), time of nephrology care before dialysis (
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- 2019
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14. Exit site infection in peritoneal dialysis : predictive factors for adverse outcome
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Filipa Sofia Silva, Joana Tavares, Sofia O Correia, Cristina Freitas, Olivia santos, Maria João Carvalho, Jorge Malheiro, António Cabrita, and Anabela Rodrigues
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peritoneal dialysis ,exit site infections ,outcomes ,catheter ,Internal medicine ,RC31-1245 - Abstract
Infection-related complications in patients on peritoneal dialysis (PD) is a leading complication. Our aim was to evaluate the type and natural course of ESI events in a cohort of PD treated in last decade of our PD program. Registry data of ESI events (n=126, in 74 patients) were retrieved. ESI protocols followed standard international guidelines. A systematic quality control is performed. The median follow-up was 29.1 (14.0-47.4) months. In this population the adverse outcomes of TI rate and peritonitis rate was 0.12 and 0.13 patient/year, respectively. Male sex (0.048), older age (0.007) and Staphylococcus aureus (SA) agent (0.006) were predictive of TI while non-optional PD and lower levels of albumin were predictive of peritonitis. After grouping the ESI events according to the date of the occurrence of infection (group 1: 2008 to 2012, group 2: 2013 to 2017 and group 3: 2018) a substantial increase of TI in 2018 was evident (P
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- 2019
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15. Increase of allosensitization after a kidney graft failure: Predictors and effect on retransplantation outcomes
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Andreia Campos, Jorge Malheiro, Sandra Tafulo, Sofia Santos, Leonídeo Dias, La Salete Martins, Manuela Almeida, Sofia Pedroso, A. Castro Henriques, and António Cabrita
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Kidney transplantation ,Retransplant ,Allosensitization ,Graft survival ,Acute rejection ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Patients who are candidates for a second kidney transplant (SKT) frequently have a higher level of panel reactive antibodies (PRA). We assessed the allosensitisation change after a first graft failure (GF), its predictors and impact on retransplantat outcomes. We retrospectively selected 140 adult patients who received a SKT. Recipient and donor characteristics were analyzed. We defined the delta PRA (dPRA) as the difference between peak PRA before the SKT and first one (cohort median value = +10%). Logistic regression analysis was used to determine risk factors for dPRA ≥ 10% and acute rejection (AR) in the SKT. Univariable and multivariable Cox analysis was applied to assess independent predictors of second GF. Risk factors for dPRA ≥ 10% at SKT were AR (OR = 2.57; P = 0.022), first graft survival
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- 2017
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16. Sodium removal in peritoneal dialysis: is there room for a new parameter in dialysis adequacy?
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Anna Lima, Joana Tavares, Nicole Pestana, Maria João Carvalho, António Cabrita, and Anabela Rodrigues
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peritoneal dialysis ,sodium removal ,diaysis adequacy ,Internal medicine ,RC31-1245 - Abstract
In peritoneal dialysis (PD) (as well as in hemodialysis) small solute clearance measured as Kt/v urea has long been used as a surrogate of dialysis adequacy. A better urea clearance was initially thought to increase survival in dialysis patients (as shown in the CANUSA trial)(1), but reanalysis of the data showed a superior contribution of residual renal function as a predictor of patient survival. Two randomized controlled trials (RCT)(2, 3) supported this observation, demonstrating no survival benefit in patients with higher achieved Kt/v. Then guidelines were revised and a minimum Kt/v of 1,7/week was recommended but little emphasis was given to additional parameters of dialysis adequacy. As such, volume overload and sodium removal have gained major attention, since their optimization has been associated with decreased mortality in PD patients(4, 5). Inadequate sodium removal is associated with fluid overload which leads to ventricular hypertrophy and increased cardiovascular mortality(6). Individualized prescription is key for optimal sodium removal as there are differences between PD techniques (CAPD versus APD) and new strategies for sodium removal have emerged (low sodium solutions and adapted PD). In conclusion, future guidelines should address parameters associated with increased survival outcomes (sodium removal playing an important role) and abandon the current one fit all prescription model.
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- 2019
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17. TRANSPLANTE RENAL CRUZADO EM PORTUGAL – UM EXEMPLO DE SUCESSO
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Catarina Isabel Ribeiro, Nicole Pestana, Filipa Silva, Manuela Almeida, Leonídio Dias, Miguel Relvas, Susana Sampaio, João Godinho, Ana Gaspar, Domingos Machado, Catarina Teixeira, Lídia Santos, Sandra Tafulo, Fernando Nolasco, António Castro Henriques, and António Cabrita
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Insuficiência Renal ,Crónico ,Transplante de Rim ,Histocompatibilidade ,Portugal ,Specialties of internal medicine ,RC581-951 ,Special situations and conditions ,RC952-1245 ,Surgery ,RD1-811 - Abstract
Até 30% dos pares de dador vivo não são transplantados por incompatibilidade do grupo ABO e/ou do sistema Human Leukocyte Antigen (HLA). Os programas de doação renal cruzada surgiram como uma estratégia para tentar ultrapassar estas barreiras. Em Portugal o Programa Nacional de Doação Renal Cruzada (PNDRC) foi legislado em 2010 e o primeiro transplante renal cruzado ocorreu em 2013. Até ao momento foram efetuados 22 transplantes deste tipo. Objetivo: O presente trabalho visa avaliar as caraterísticas e perfil evolutivo dos doentes submetidos a transplante renal cruzado em Portugal. Métodos: Os autores apresentam um estudo observacional retrospetcivo com análise dos respetivos doentes. Resultados: Da amostra total, a maioria dos recetores era do sexo masculino (55%), com idade mediana 53 anos. A poliquistose renal foi a etiologia da doença renal mais comum (18%) e a maioria dos doentes encontrava-se previamente em programa crónico de hemodiálise (68%). Três doentes apresentaram Calculated Panel Reactive Antibody (PRAc) superior a 98% e 10 PRAc superior a 80%. Foi realizada indução de imunossupressão com Anti-Thymocyte Globulin (ATG) em 50% dos doentes e imunomodulação com Rituximab e/ou plasmaferese em 15%. Todos os recetores evoluíram com função imediata do enxerto. Não se registaram complicaçães major, com eventos minor em 15%. Num tempo mediano de follow-up de 2 7 [ 2-46] meses, não se verificou nenhum caso de rejeição celular aguda e a penas um de rejeição humoral. As sobrevidas do dador e recetor foram ambas 100%. Conclusão: A apresentação destes resultados preliminares excelentes visa estimular o aumento do número de pares a incluir no PNDRC e um maior número de transplantes efetuados no programa. Tal como uma parte significativa desta amostra, o transplante renal cruzado pode constituir uma possibilidade para doentes com incompatibilidade do sistema HLA e/ou do grupo ABO. A doação renal cruzada em muito engrandece a doação em vida, oferecendo a pares incompatíveis e selecionados, uma oportunidade de transplantação renal com sucesso.
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- 2019
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18. Demographic, clinical characteristics and cardiovascular disease burden in a Portuguese cohort of older chronic kidney disease patients
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Josefina Maria Sousa Santos Lascasas, Isabel Fonseca, Jorge Malheiro, Sofia Santos, Andreia Campos, Ana Castro, Carla Moreira, Sofia Correia, Idalina Beirão, Luísa Lobato, and António Cabrita
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Insuficiência Renal Crônica ,Doenças Cardiovasculares ,Idoso ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
ABSTRACT Introduction: Chronic kidney disease (CKD) is an independent risk factor for several unfavorable outcomes including cardiovascular disease (CVD), particularly in the elderly, who represent the most rapidly growing segment of the end-stage kidney disease (ESKD) population. Portugal has the highest European unadjusted incidence and prevalence rates of ESKD. In 2012, we started to follow a cohort of elderly CKD patients, we describe their baseline characteristics, risk profile, and cardiovascular disease burden. Methods: All CKD patients aged 65 years and older referred to our department during 2012 were enrolled. Baseline data included: demographic, CKD stage, medication, comorbid conditions. Estimated glomerular filtration rate (eGFR) was calculated by the CKD-EPI formula. Results: A total of 416 patients, 50% referred by primary care physicians, aged 77 ± 7 years, 52% male, with a median eGFR of 32 mL/min/1.73m2 participated in the study. Fifty percent had diabetes (DM), 85% dyslipidemia, 96% hypertension; 26% were current/former smokers, and 24% had a body mass index > 30 kg/m2. The prevalence of CVD was 62% and higher in stage 4-5 patients; in diabetics, it gradually increased with CKD progression (stage 3a < stage 3b < stage 4-5) (39, 58, 82%; p < 0.001). Conclusions: At baseline, our CKD elderly cohort had a higher burden of CVD. The prevalence of CVD was greater than in other European CKD cohorts. Lower level of eGFR was associated with a greater burden of CVD and was more pronounced in diabetics, highlighting the importance of strategically targeting cardiovascular risk reduction in these patients.
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- 2019
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19. Cytotoxic Effects of Zoom® Whitening Product in Human Fibroblasts
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Carlos Miguel Marto, Mafalda Laranjo, Anabela Paula, Ana Sofia Coelho, Ana Margarida Abrantes, João Casalta-Lopes, Ana Cristina Gonçalves, Ana Bela Sarmento-Ribeiro, Manuel Marques Ferreira, António Cabrita, Maria Filomena Botelho, and Eunice Carrilho
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tooth whitening ,hydrogen peroxide ,cytotoxicity ,fibroblasts ,oxidative stress ,Technology ,Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Microscopy ,QH201-278.5 ,Descriptive and experimental mechanics ,QC120-168.85 - Abstract
Tooth whitening procedures are increasing; however, side effects can occur, such as damage to pulp cells, by the whitening products. This study aims to assess the cellular effects promoted by a whitening product, namely, the oxidative stress fostered by the active agent hydrogen peroxide, with and without photoactivation. Additionally, if cellular recovery occurred, we intended to determine the time point where cells recover from the tooth whitening induced damage. Human fibroblasts were exposed to hydrogen peroxide, Zoom®, Zoom® + irradiation, and irradiation alone. The following analysis was performed: metabolic activity evaluation by the MTT assay; cell viability, mitochondrial membrane potential, peroxides production, superoxide radical production, and reduced glutathione expression by flow cytometry. We determined the IC50 value for all groups, and a dose-dependent cytotoxic effect was verified. At the times analyzed, hydrogen peroxide groups showed no metabolic activity recovery while a cell recovery was observed after 24 h (Zoom®) and 48 h (Zoom® + irradiation). Cell death was seen in hydrogen peroxide and Zoom® + irradiation groups, mainly by apoptosis, and the irradiation had a cytotoxic effect per se. This in vitro study supports that whitening products with moderate hydrogen peroxide (HP) concentration have a temporary effect on cells, allowing a cellular recovery.
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- 2020
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20. Histiocytic sarcoma; case report of a rare disease in a kidney transplant recipient
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Pedro Ventura Aguiar, Carla Dias, Pedro Azevedo, Hugo Neves Silva, Manuela Almeida, Sofia Pedroso, La Salete Martins, Leonídio Dias, Anabela Rodrigues, Ramón Viscaíño, António Cabrita, and António Castro Henriques
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histiocytic sarcoma ,post-transplant lymphoproliferative disease ,malignancy ,transplant ,chronic kidney disease ,Pathology ,RB1-214 ,Internal medicine ,RC31-1245 ,Other systems of medicine ,RZ201-999 - Abstract
Background: Histiocytic sarcoma (HS) is a rare hematologic neoplasm with a few hundred cases having been described to date. Case Presentation: We report the case of a 56-year-old woman with a history of hepatitis C infection and chronic kidney disease (CKD), submitted to a kidney transplant in 1984, under maintenance immunosuppression with prednisone and azathioprine. Patient presented with a relentlessly growing mass on her right front thorax. It was painless, smooth, and adherent to the deep muscle. Laboratory studies were unremarkable. Ultrasonography and computerized tomography (CT) scan revealed a highly vascularized heterogeneous mass (8×9 cm), with a necrotic centre. Positron emission tomography (PET) scan demonstrated multiple thoracic, abdominal, and pelvic nodules. Histology revealed a highly undifferentiated HS (vimentin, CD68, CD99, and CD4 positive). In spite of having started treatment with etoposide and thalidomide, no clinical response was achieved and the patient died three months later. Conclusions: To the authors’ knowledge, this is the first described case of HS in a solid organ transplant patient.
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- 2015
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21. Overhydration prevalence in peritoneal dialysis – A 2 year longitudinal analysis
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Pedro Ventura Aguiar, Olívia Santos, Laetitia Teixeira, Fernanda Silva, Pedro Azevedo, Joana Vidinha, Francisco Ferrer, Maria João Carvalho, António Cabrita, and Anabela Rodrigues
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Multifrequency bioimpedance ,Overhydration ,Peritoneal dialysis ,Volume status ,Nutritional status ,Prescribed dialysis dose ,Hypertension ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Background and objectives: Hypervolemia is a major concern in dialysis patients, and is associated with increased cardiovascular risk and death. Cross sectional analysis have previously demonstrated that peritoneal dialysis (PD) patients are not more overhydrated when compared to haemodialysiś ones. This study was designed to evaluate longitudinal trends in hydration status and corporal composition in a PD population. Methods: We conducted a 2 year prospective observational study of 58 PD patients from a single centre. Incident and prevalent patients were included. Yearly measurements were performed using multifrequency electric bioimpedance. Overhydration (OH) was defined as an extra-cellular water (ECW)/total body water (TBW) over 15%. Clinical and biochemical variables were also explored. Results: A total of 30 patients completed evaluation (female 63.3%, mean age 56.9 years, BMI 25.0 kg/m2, diabetes 10.0%, APD-50.0%). Median PD vintage was 21.9 months, and 36.7% were anuric. At baseline 6.7% were overhydrated. On longitudinal analysis no significant changes were found in hydration status, systolic blood pressure, pro-BNP, nor albumin levels. Similar results were found among incident (n=11; APD- 45.5%; anuric- 9.1%) and prevalent (n=19; APD- 52.6%; anuric- 52.6%) patients (p>.05). However, at the second year, prevalent patients were moderately overhydrated compared to incident ones (median 10.2% vs 3.5%; p=.009). Nonetheless, no statistical difference was observed considering adequacy, TBW, or ECW. Moreover, nutritional parameters remained stable. Conclusions: Peritoneal dialysis maintenance without increasing volume status, nor major deleterious corporal composition trends, is feasible under careful therapy strategies. Longitudinal application of BIA may be a useful clinical tool to evaluate adequacy beyond Kt/V.
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- 2015
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22. Plasmapheresis in the Management of Acute Pancreatitis due to Severe Hypertriglyceridemia—Reporting New Cases
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Andreia Campos, Josefina Santos, Cristina Freitas, Ana Castro, Sofia Santos, JP Pimentel, and António Cabrita
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Diseases of the endocrine glands. Clinical endocrinology ,RC648-665 ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Acute pancreatitis is a potentially life-threatening disease. If the diagnosis and the treatment are not prompt, it can rapidly evolve to a medical emergency. Severe hypertriglyceridemia, defined as above 1000 mg/dl, is the third most common cause of acute pancreatitis. Conventional management includes fat dietary restriction and pharmacological treatment; however, these measures take time to be effective. Plasmapheresis seems to be an alternative and safe adjunctive therapy because it allows the rapid reduction of the trigger agent in circulation. Its use, especially in severe cases, has been increasingly reported. The authors report three cases of severe hypertriglyceridemia-induced pancreatitis in which early plasmapheresis was successfully used with other supportive clinical management.
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- 2017
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23. Deciphering the Contribution of Biofilm to the Pathogenesis of Peritoneal Dialysis Infections: Characterization and Microbial Behaviour on Dialysis Fluids.
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Joana Sampaio, Diana Machado, Ana Marta Gomes, Idalina Machado, Cledir Santos, Nelson Lima, Maria João Carvalho, António Cabrita, Anabela Rodrigues, and Margarida Martins
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Medicine ,Science - Abstract
Infections are major complications in peritoneal dialysis (PD) with a multifactorial etiology that comprises patient, microbial and dialytic factors. This study aimed at investigating the contribution of microbial biofilms on PD catheters to recalcitrant infections and their interplay with PD related-factors. A prospective observational study was performed on 47 patients attending Centro Hospitalar of Porto and Vila Nova de Gaia/Espinho to whom the catheter was removed due to infectious (n = 16) and non-infectious causes (n = 31). Microbial density on the catheter was assessed by culture methods and the isolated microorganisms identified by matrix-assisted laser desorption/ionization time-of-flight intact cell mass spectrometry. The effect of conventional and three biocompatible PD solutions on 16 Coagulase Negative Staphylococci (CNS) and 10 Pseudomonas aeruginosa strains planktonic growth and biofilm formation was evaluated. Cultures were positive in 87.5% of the catheters removed due infectious and 90.3% removed due to non-infectious causes. However, microbial yields were higher on the cuffs of catheters removed due to infection vs. non-infection. Staphylococci (CNS and Staphylococcus aureus) and P. aeruginosa were the predominant species: 32% and 20% in the infection and 43.3% and 22.7% in the non-infection group, respectively. In general, PD solutions had a detrimental effect on planktonic CNS and P. aeruginosa strains growth. All strains formed biofilms in the presence of PD solutions. The solutions had a more detrimental effect on P. aeruginosa than CNS strains. No major differences were observed between conventional and biocompatible solutions, although in icodextrin solution biofilm biomass was lower than in bicarbonate/lactate solution. Overall, we show that microbial biofilm is universal in PD catheters with the subclinical menace of Staphylococci and P. aeruginosa. Cuffs colonization may significantly contribute to infection. PD solutions differentially impact microbial species. This knowledge is important for the development of infection diagnosis, treatment and preventive strategies.
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- 2016
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24. Consulta de acessos vasculares para hemodiálise: experiência de um centro Outpatient clinic for vascular access in hemodialysis patients: A single-centre experience
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Cristina Freitas, Fernanda Silva, Norton de Matos, Rui Machado, José Queirós, Rui Almeida, and António Cabrita
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Fístula arteriovenosa ,Hemodiálise ,Ecodoppler ,artteriovenous fistula ,hemodialysis ,ecodoppler ,Medicine ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Introdução: Os acessos vasculares são responsáveis por elevada morbilidade nos doentes em hemodiálise. A fístula arteriovenosa (FAV) representa o acesso vascular com menor taxa de complicações, pelo que a Consulta de Acessos Vasculares para hemodiálise procura promover o aumento da sua taxa de patência. Métodos: avaliação retrospectiva dos motivos de referenciação à consulta entre 01-01-2008 e 31-12-2009, do resultado das intervenções e análise dos factores relacionados com a patência da FAV. Resultados: Avaliaram-se 697 doentes (58% homens, 30% diabéticos, idade média 64±15 anos) referenciados para construção de acesso (71%), suspeita de estenose (14%), síndrome de roubo (6%) pseudoaneurismas (4%) e hipertensão venosa (HTV) (3%). Os acessos construídos foram FAV simples (n=514; 91% dos doentes), transposição da veia basílica (n=40) e pontagem arteriovenosa com prótese (n=10). A taxa de patência global (às 4 semanas) foi 83% (75%, 93% e 40% respectivamente nas FAVs, transposições e pontagens). A localização proximal da FAV (p Background: The vascular access is responsible for high morbidity in for hemodialysis patients. Arteriovenous fistula (AVF) provides the vascular access with lower complication rate, so the Consulta de Acessos Vasculares for hemodialysis promotes actions to increase its patency rate. Methods: Retrospective study of the causes for referral to consultation between 01/01/2008 and 31/12/2009, outcome of proposed interventions and factors favoring AVF patency. Results: We evaluated 697 patients (58% male, 30% diabetic, mean age 64 ± 15 years) referred for construction of access (71%), suspicion of stenosis (14%), steal syndrome (6%), pseudoaneurysm (4%) and venous hypertension (HTV) (3%). The constructed access were simple AVF (n=514, 91% of patients, transposition of the basilic vein (n=40) and prothesic arteriovenous graft (n=10). The global access patency rate (at 4th week) was 83% (with 75%, 93%, 40% for AVFs, transposition and grafts, respectively). Proximal location of AVF (p
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- 2011
25. Deficient production of reactive oxygen species leads to severe chronic DSS-induced colitis in Ncf1/p47phox-mutant mice.
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Tiago Rodrigues-Sousa, Ana Filipa Ladeirinha, Ana Raquel Santiago, Helena Carvalheiro, Bruno Raposo, Ana Alarcão, António Cabrita, Rikard Holmdahl, Lina Carvalho, and M Margarida Souto-Carneiro
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Medicine ,Science - Abstract
Colitis is a common clinical complication in chronic granulomatous disease (CGD), a primary immunodeficiency caused by impaired oxidative burst. Existing experimental data from NADPH-oxidase knockout mice propose contradictory roles for the involvement of reactive oxygen species in colitis chronicity and severity. Since genetically controlled mice with a point-mutation in the Ncf1 gene are susceptible to chronic inflammation and autoimmunity, we tested whether they presented increased predisposition to develop chronic colitis.Colitis was induced in Ncf1-mutant and wild-type mice by a 1st 7-days cycle of dextran sulfate sodium (DSS), intercalated by a 7-days resting period followed by a 2nd 7-days DSS-cycle. Cytokines were quantified locally in the colon inflammatory infiltrates and in the serum. Leukocyte infiltration and morphological alterations of the colon mucosa were assessed by immunohistochemistry.Clinical scores demonstrated a more severe colitis in Ncf1-mutant mice than controls, with no recovery during the resting period and a severe chronic colitis after the 2nd cycle, confirmed by histopathology and presence of infiltrating neutrophils, macrophages, plasmocytes and lymphocytes in the colon. Severe colitis was mediated by increased local expression of cytokines (IL-6, IL-10, TNF-α, IFN-γ and IL-17A) and phosphorylation of Leucine-rich repeat kinase 2 (LRRK2). Serological cytokine titers of those inflammatory cytokines were more elevated in Ncf1-mutant than control mice, and were accompanied by systemic changes in functional subsets of monocytes, CD4+ T and B cells.This suggests that an ineffective oxidative burst leads to severe chronic colitis through local accumulation of peroxynitrites, pro-inflammatory cytokines and lymphocytes and systemic immune deregulation similar to CGD.
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- 2014
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26. A Case Series of Gastrointestinal Tuberculosis in Renal Transplant Patients
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Pedro Azevedo, Cristina Freitas, Hugo Silva, Pedro Aguiar, Pedro Farrajota, Manuela Almeida, Sofia Pedroso, La Salete Martins, Leonídio Dias, José Ramón Vizcaíno, António Castro Henriques, and António Cabrita
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Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Tuberculosis is a disease relatively frequent in renal transplant patients, presenting a wide variety of clinical manifestations, often involving various organs and potentially fatal. Gastrointestinal tuberculosis, although rare in the general population, is about 50 times more frequent in renal transplant patients. Intestinal tuberculosis has a very difficult investigational approach, requiring a high clinical suspicion for its diagnosis. Therapeutic options may be a problem in the context of an immunosuppressed patient, requiring adjustment of maintenance therapy. The authors report two cases of isolated gastro-intestinal tuberculosis in renal transplant recipients that illustrates the difficulty of making this diagnosis and a brief review of the literature on its clinical presentation, diagnosis, and therapeutic approach.
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- 2013
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27. Efeito de Hidroxietilamido sobre Lesão Renal Aguda em Modelo de Isquemia-Reperfusão Hepática
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Manuel Oliveira-Santos, Maria Francelina Lopes, Dora Catré, Esmeralda Gonçalves, and António Cabrita
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Medicine ,Medicine (General) ,R5-920 - Abstract
Introdução: As manobras de controlo vascular hepático utilizadas durante cirurgia de fígado estão normalmente associadas a lesão de isquemia-reperfusão, que pode resultar em disfunção renal aguda. O modelo murino tem sido utilizado para estudo desta lesão. Os hidroxietilamidos têm reconhecidas propriedades anti-inflamatórias e melhoram a microcirculação. Os de terceira geração, nomeadamente o 130/0.4, têm melhor perfil de segurança que hidroxietilamidos anteriores. Objetivos: Avaliação da lesão renal em modelo murino de lesão de isquemia-reperfusão hepática parcial normotérmica e investigação do efeito do hidroxietilamido 130/0.4 nessa lesão. Métodos: Distribuíram-se aleatoriamente 72 ratos Wistar do sexo masculino por seis grupos de características idênticas (n = 12 x 6). Em três deles, os de isquemia-reperfusão, clampou-se o pedículo vascular dos lobos hepáticos esquerdo e mediano, induzindo isquemia parcial (70%), e removeu-se o clampe 60 minutos depois (grupos IR + HEA e IR + SH, com administração de hidroxietilamido ou soro fisiológico hipertónico (7,5%) no momento da reperfusão, respetivamente, e grupo IR, sem fluidoterapia). Os grupos de controlo foram operados e tratados segundo o mesmo protocolo, mas sem indução de isquemia (sham + HEA, sham + SH e sham). Após 120 minutos de reperfusão nos grupos de isquemia-reperfusão e 180 minutos de cirurgia nos grupos de controlo colheu-se sangue da artéria aorta para doseamento de creatinina, ureia e alanina aminotransferase e retiraram-se amostras renais e hepáticas para análise histopatológica. Resultados: Como já publicado pelo nosso grupo, o modelo de lesão de isquemia-reperfusão hepática parcial apresentou lesão hepática. No presente trabalho, o grupo IR teve concentrações médias de creatinina, ureia e score histopatológico superiores ao grupo sham (p < 0,05). A creatininémia e uremia foram significativamente inferiores tanto no grupo IR + HEA (23,08 μmol/L e 8,38 mmol/L, respetivamente) como no grupo IR + SH (26,59 μmol/L e 7,82 mmol/L) relativamente ao grupo IR (40,101 μmol/L e 11,25 mmol/L). Não se encontrou diferença significativa entre os grupos IR + HEA e IR + SH (marcadores séricos e histopatologia). Conclusões: O modelo de lesão de isquemia-reperfusão hepática foi eficaz na produção de lesão renal. Tanto o hidroxietilamido 130/0.4 como o soro fisiológico hipertónico foram protetores renais neste contexto e não lesaram o rim no controlo. Justificam-se mais estudos para complementar as implicações clínicas da administração de hidroxietilamido 130/0.4 em cirurgia hepática.
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- 2012
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28. Over Ten-Year Kidney Graft Survival Determinants
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Anabela Malho Guedes, Jorge Malheiro, Isabel Fonseca, La Salete Martins, Sofia Pedroso, Manuela Almeida, Leonídio Dias, António Castro Henriques, and António Cabrita
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Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Kidney graft survival has been mainly evaluated using an up to 10-year threshold. Instead, in this study our aim was to evaluate predictive variables that impact long-term kidney graft survival (≥10 years). We enrolled 892 patients in our analysis: 638 patients with functioning graft at 10 years PT and 254 patients with graft failure at 10 years PT (considering patient death with a functioning graft
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- 2012
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29. Association between severe chronic kidney disease defined by cystatin-c and creatinine and clinical outcomes in an elderly population - an observational study
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Joana Tavares, Josefina Santos, Filipa Silva, João Oliveira, Jorge Malheiro, Andreia Campos, and António Cabrita
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Renal Insufficiency, Chronic ,Creatinina ,Cystatin C ,Aged ,Glomerular Filtration Rate ,Outcome Assessment, Health Care ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
ABSTRACT Introduction: Estimated glomerular filtration rate (eGFR) based on serum cystatin-C (sCys) seems as accurate as when based on serum creatinine (sCr), but sCys seems a better predictor of adverse outcomes. We aimed to study whether sCys could be a reliable tool for the prediction of adverse outcomes in elderly patients with severe chronic kidney disease (CKD). Methods: A group of 348 elderly patients with non-end-stage CKD (stages 1-4, according to eGFR-EPI sCr and/or sCys), referred to our consultation unit during 2016, was retrospectively studied and divided into four exclusive categories: CKD_stage4_neither (eGFR-sCr≥30mL/min; eGFR-sCys≥30mL/min), CKD_stage4_sCr_only (eGFR-sCr
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30. COVID-19 em receptores de transplante renal: o que aprendemos um ano depois? Um estudo de coorte a partir de um centro terciário
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Joana Tavares, João Pedro Oliveira, Pedro Reis, Bárbara Ribeiro, Filipa Silva, Jorge Malheiro, Manuela Almeida, La Salete Martins, António Cabrita, António Castro Henriques, and Leonídio Dias
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Insuficiência Renal Crônica ,Injúria Renal Aguda ,COVID-19 ,Transplante Renal ,General Medicine ,Acute Kidney Injury ,Renal Insufficiency, Chronic ,Immunosuppression ,Kidney Transplantation ,Imunossupressão - Abstract
Introduction: Kidney transplant (KT) recipients have a high risk for adverse outcomes from infections, such as COVID-19. Methods: We have retrospectively reviewed all KT recipients with documented COVID-19 between March 1, 2020, and March 15, 2021, and analyzed patients’ characteristics, clinical course, treatment, and outcomes. Results: We identified 123 patients, 72% were male, with a mean age of 54.5±13.0 years. Twenty percent were asymptomatic, 7% had a nosocomial transmission, and 36% of the remainder required hospitalization. Almost all admitted patients received oxygen, 30% required invasive mechanical ventilation (IMV), more than a half had acute kidney injury, with 10% requiring dialysis, and 20% died. Incidence was comparable to that of the Portuguese population, but the mortality rate was almost four times higher (SMR of 3.768 (95% CI:1.723-7.154). Higher body mass index (OR 1.275, P=0.001), lower baseline graft function (OR 0.968, P=0.015), and nosocomial transmission (OR 13.836, P=0.019) were associated with oxygen demand, whereas female gender (OR 3.801, P=0.031) and lower baseline kidney graft function (OR 0.955, P=0.005), but not body mass index, were associated with IMV and/or death. Conclusion: Mortality rate in KT patients was higher than in the general population and lower baseline kidney function was the most consistent marker for adverse outcomes. Resumo Introdução: Os receptores de transplante renal (TR) apresentam um alto risco para desfechos adversos de infecções, tais como a COVID-19. Métodos: Revisamos retrospectivamente todos os receptores de TR com COVID-19 documentada entre 1º de Março de 2020 e 15 de Março de 2021, e analisamos as características, curso clínico, tratamento e desfechos dos pacientes. Resultados: Identificamos 123 pacientes, 72% do sexo masculino, com uma média de idade de 54,5±13,0 anos. Vinte por cento eram assintomáticos, 7% apresentaram transmissão nosocomial, e 36% do restante necessitaram de internação. Quase todos os pacientes internados receberam oxigênio, 30% necessitaram de ventilação mecânica invasiva (VMI), mais da metade apresentou lesão renal aguda, com 10% necessitando de diálise, e 20% foram a óbito. A incidência foi comparável à da população portuguesa, mas a taxa de mortalidade foi quase quatro vezes superior (TMP de 3,768 (IC 95%: 1,723-7,154). Maior índice de massa corporal (OR 1,275; P=0,001), menor função do enxerto basal (OR 0,968; P=0,015), e transmissão nosocomial (OR 13,836; P=0,019) foram associados à demanda de oxigênio, enquanto sexo feminino (OR 3,801; P=0,031) e menor função do enxerto renal basal (OR 0,955; P=0,005), mas não índice de massa corporal, foram associados à VMI e/ou óbito. Conclusão: A taxa de mortalidade em pacientes com TR foi mais elevada do que na população em geral e a função renal basal mais baixa foi o marcador mais consistente para desfechos adversos.
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- 2022
31. Uma causa incomum de ascite de início recente e lesão renal aguda grave aparente
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João Oliveira, Miguel Costa, Joana Freitas, Inês Sala, Sofia Santos, and António Cabrita
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General Medicine - Published
- 2023
32. Is Erythrocytosis More Common After Simultaneous Pancreas Kidney Transplantation? A Single-Center Experience
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Marina Reis, Joana Tavares, Jorge Malheiro, Manuela Almeida, Sofia Pedroso, Leonidio Dias, António Castro Henriques, António Cabrita, and La Salete Martins
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Transplantation ,Surgery - Published
- 2023
33. Acute hyperammonemic encephalopathy – an indication for an extracorporeal depuration technique A case report and literature review
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Cristina Freitas, Filipa V.M. Silva, António Cabrita, Arlindo Guimas, Joana Tavares, João Pedro Pimentel, and Ana I. Gómez de Castro
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medicine.medical_specialty ,business.industry ,Medicine ,business ,Hyperammonemic encephalopathy ,Intensive care medicine ,Extracorporeal - Abstract
Introduction: Ammonia is a resultant molecule from the protein metabolism that can be neurotoxic when present in high concentrations, causing brain edema and encephalopathy. Extracorporeal blood purification technique (EBPT) can play a role in reducing both ammonia and urea blood levels. However, there are no specific guidelines for its use in hyperammonemia, due to its low incidence and scarce literature on this subject, particularly in adults. Case report: The authors describe a case of a 22 -year -old previously healthy woman. She presented with polyuria, polydipsia, anorexia, vomiting and significant (>10%) weight loss over a month. Laboratory data revealed hypoglycemia and a high anion gap metabolic acidosis with severe acidemia with normal lactate, serum creatinine of 1.12 mg/dl and 260 (reference value 26 -74) umol/l of ammonia. Urine analysis showed ketone bodies. She evolved with progressive encephalopathy and neurological deterioration. The hypothesis of hyperammonemic encephalopathy secondary to a hereditary metabolic disease was suspected. Medical supportive therapy was initiated. An EBPT for ammonia removal and acid -base correction was initiated using continuous venovenous hemodiafiltration (CVVHDF) with a drastic neurologic improvement. A fatty acid beta -oxidation deficit was discovered. The patient was discharged with no neurological changes, with a strict diet free of fat, animal protein and high -protein vegetables, plus supplementation with benzoate, carnitine, riboflavin, maltodextrine and essential amino acids. Discussion and conclusion: In adults, hyperammonemia related to metabolic disorders is rare, and in the presence of encephalopathy, ECDT should be considered. Ammonia is easily dialysable either by intermittent or continuous techniques. CVVHDF provides a continuous clearance with less rebound effect.
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- 2021
34. Different kidney function trajectory patterns before dialysis in elderly patients: clinical implications and outcomes
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António Cabrita, Luísa Lobato, Josefina Santos, Pedro Oliveira, Isabel Fonseca, Milton Severo, and Instituto de Saúde Pública da Universidade do Porto
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Male ,medicine.medical_specialty ,Time Factors ,medicine.medical_treatment ,030232 urology & nephrology ,Renal function ,Patient characteristics ,Linear quadratic ,030204 cardiovascular system & hematology ,Critical Care and Intensive Care Medicine ,Kidney ,outcomes ,03 medical and health sciences ,eskd ,0302 clinical medicine ,renal function trajectory ,Renal Dialysis ,Internal medicine ,Diabetes mellitus ,medicine ,CKD ,Humans ,Renal Insufficiency, Chronic ,Dialysis ,Aged ,Aged, 80 and over ,ESKD ,Proportional hazards model ,business.industry ,Retrospective cohort study ,General Medicine ,medicine.disease ,Diseases of the genitourinary system. Urology ,Survival Rate ,Nephrology ,ckd ,Clinical Study ,Disease Progression ,Female ,RC870-923 ,business ,Kidney disease ,Research Article ,Glomerular Filtration Rate - Abstract
Background. Identifying trajectories of kidney disease progression in chronic kidney disease (CKD) patients may help to deliver better care. We aimed to identify and characterize trajectories of renal function decline in CKD patients and to investigate their association with mortality after dialysis. Methods. This retrospective cohort study included 378 CKD patients who initiated dialysis (aged 65 years and over) between 2009 and 2016. Were considered mixed models using linear quadratic and cubic models to define the trajectories, and we used probabilistic clustering procedures. Patient characteristics and care practices at and before dialysis were examined by multivariable multinomial logistic regression. The association of these trajectories with mortality after dialysis was examined using Cox models. Results. Four distinct groups of eGFR trajectories decline before dialysis were identified: slower decline (18.3%), gradual decline (18.3%), early rapid decline (41.2%), and rapid decline (22.2%). Patients with rapid eGFR decline were more likely to have diabetes, more cognitive impairment, to have been hospitalized before dialysis, and were less likely to have received pre-dialysis care compared to the patients with a slower decline. They had a higher risk of death within the first and fourth year after dialysis initiation, and after being more than 4 years in dialysis. Conclusions. There are different patterns of eGFR trajectories before dialysis initiation in the elderly, that may help to identify those who are more likely to experience an accelerated decline in kidney function, with impact on pre ESKD care and in the mortality risk after dialysis.
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- 2021
35. MO954: Older Living Donors—is it A Feasible Alternative For Kidney Transplantation?
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Cátia Figueiredo, Círia Sousa, Sofia Ventura, Gonçalo Cruz, José Silvano, Jorge Malheiro, Sofia Pedroso, Manuela Almeida, La Salete Martins, and António Cabrita
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Transplantation ,Nephrology - Abstract
BACKGROUND AND AIMS Kidney transplantation (KT) improves survival and quality of life of patients with end-stage renal disease. However, there is still an unbalance between supply and demand for kidneys. To increase the number of available grafts and reduce the waiting list for transplantation, recruitment of older living donors has expanded. This approach remains controversial for several reasons, including the impact of kidney function decline on long-term graft and recipient survival. We aimed to evaluate the impact of living donor (LD) age on recipient graft survival and on graft function decline over time. METHOD This is a Unicenter retrospective observational study that included kidney transplants of LD between 2008 and 2017. Several clinical data were analyzed, including donors’ comorbidities, immunological features of the transplant, induction immunosuppression, number of acute rejections (AR) at the first year, and the graft glomerular filtration rate (eGFR) during the follow-up period. The eGFR was calculated using the CKD-EPI equation. The LDs were classified as young ( The Kaplan–Meier curves and Cox proportional hazards multivariable regression were used for survival analysis and linear mixed regression was used to evaluate the annual slope of recipient eGFR, comparing both groups. RESULTS We observed 210 LD kidney transplants: 86% (n = 181) from young (D The censored recipient graft survival was similar for D Linear mixed regression showed that recipient eGFR from D ≥60 was lower than D CONCLUSION Although the greater eGFR graft decline in the first 12 months and beyond, we demonstrated that kidneys from older living donors did not significantly compromise the censored recipient graft survival. We did not evaluate the age match between donor and recipient, as has been done in other studies, but even so, these results support the importance of increasingly encouraging KT from older living donors. It can improve the quality of life, compared to the time on dialysis and, especially for old candidates, can be the only chance to get transplanted.
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- 2022
36. MO895: Comorbidity or Frailty, Which One Has a Greater Impact on Early Mortality in Incident Elderly Dialysis Patients?
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João Fernandes, Bruno Fraga Dias, Inês Sala, Joana Freitas, Josefina Santos Lascasas, Jorge Malheiro, and António Cabrita
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Transplantation ,Nephrology - Abstract
BACKGROUND AND AIMS Mortality in end-stage renal disease remains high, especially among the elderly with a higher burden of comorbidity and frailty. In this group, dialysis (HD) may not offer better survival compared with conservative management. Frailty defined by clinical frailty scale (CFS) and comorbidity by modified Charlson Comorbidity Index (mCCI) are known independent predictors of mortality. Our aim is to compare that has higher impact on early mortality in incident elderly HD patients. METHOD We conducted a retrospective cohort study of patients aged 65 years and over, who started HD as their first renal replacement therapy (RRT) between January 2014 and December 2019. CFS and mCCI, at time of HD start, were used to evaluate, respectively, frailty and comorbid disease burden. The primary outcome was death in the first 6 months of RRT. The optimal cut-off for our outcome was defined through the analysis of a receiver operating characteristic (ROC) curve. Survival curves were constructed using Kaplan–Meier method, with comparison between patients' groups being done by log-rank test. Multivariable Cox analysis was applied to assess independent predictors of early mortality. All p values are two-tailed, p value RESULTS 166 patients were included, 107 (64%) started HD by central venous catheter. The median age, at time of haemodialysis start, was 75 years ± 6.3 years. The mortality at 6 months was 19% (n = 31). For both scales, the analysis of ROC curve, stablished the optimal cut-off to predict the event death at first 6 months of HD as ≥ 5points. The performance of CFS was superior to the mCCI (P = 0.031; Figure 1 top). In fact, the area under the curve is higher in CFS (0.739) versus the mCCI (0.620). A CFS ≥ 5 had a sensitivity/specificity of 94%/44% in prediction the primary outcome. On the other and, a mCCI ≥ 5 predicts the same outcome with a sensitivity/specificity of 26%/88%. The diagnostic odds ratio for CFS ≥ 5 was 11.6, compared with only 2.7 for mCCI ≥ 5. When confronted using the Kaplan–Meier method, both CSF CONCLUSION In this cohort of incident elderly HD patients, frailty defined by CFS was a stronger predictor of mortality than comorbidity defined by CCI. The group of mCCI/CFS (≥5/≥5) has a 10-time higher chance of dying than the reference group. Our data also suggest that simple scores can predict the risk of early mortality in incident HD patients and should be used to guide the decision-making process for elderly patients and to improve the quality of the information given to patients and families.
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- 2022
37. MO838: Urgent-Start Haemodialysis in the Elderly Patients: Patterns and Predictors of 1-Year Mortality
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Bruno Fraga Dias, João Fernandes, Inês Sala, Joana Freitas, Josefina Santos Lascasas, Jorge Malheiro, and António Cabrita
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Transplantation ,Nephrology - Abstract
BACKGROUND AND AIMS The number of elderly patients starting haemodialysis is increasing as a result of an aging population and age-related increases in the incidence of chronic kidney disease. Outcomes of elderly patients with end-stage kidney disease at urgent haemodialysis (UH) initiation are poorly studied. It is necessary to define predictors of adverse outcomes in these population. The aim of this study was to evaluate patterns and predictors of 1-year mortality of urgent-start haemodialysis in elderly patients. METHOD This is an observational, retrospective study including all elderly patients (>65 years) who started UH between 2014 and 2019. The follow-up period was 1 year after the start of UH. Demographic data, comorbidities, analytical parameters and vascular access were recorded. We analyzed global mortality by Kaplan–Meier survival curves and predictors of mortality at 1 year by multivariable Cox regression. In a secondary evaluation, predictors of mortality at 1 year by specific cause were studied through competing-risks multivariable regression. RESULTS A total of 166 patients (75.5 ± 6.3 years) were included and 45 patients (27%) died at 1-year follow-up. One-year mortality rate was 33/100 person-years [95% confidence interval (95% CI): 25–44] with the highest mortality rate in the first trimester (48/100 person-years, 95% CI: 31–75) (Figure 1A). The main cause of mortality was infection (mortality rate 14/100 person-years, 95% CI 9–22) followed by cardiovascular deaths (11/100 person-year, 95% CI 7–18) and cancer (5/100 person-years, 95% CI 2–11). There was a significant difference in the Kaplan–Meier survival probability between the patients with CFS ≥ 5 and CFS 3.2 g/dL, at 3 and 12 months (81% versus 94% and 57% versus 84%, respectively, P Patients who died at 1 year of follow-up were later referred to nephrology (P = 0.031), had lower serum albumin levels (P = 0.001), had a higher Clinical Frailty score—CFS—(P The 1-year mortality predictors that we identified were: CFS ≥ 5 (HR = 10.185; P Predictors of 1-year infection-related death were CFS ≥ 5 (sHR = 9.809; P = 0.024) and serum albumin levels CONCLUSION This study showed a high mortality rate in elderly patients who started UH, especially during the first 3 months. Infectious diseases were the main cause of mortality followed by cardiovascular diseases. The CFS was a useful predictor of mortality in the global analysis and a predictor of mortality caused by infection, cancer or cardiovascular disease; all patients started UH, which can exacerbate the importance of frailty in defining outcomes. Serum albumin is a predictor of mortality by infectious causes, possibly reflecting the inflammatory activity and malnutrition of these patients. The relationship between BMI and outcomes needs further evaluation.
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- 2022
38. MO950: Living Donor Kidney Transplantation—Does Donor Sex Modify Recipient Outcomes?
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Sofia Ventura, Gonçalo Cruz, Círia Sousa, Cátia Figueiredo, José Silvano, Sofia Pedroso, Manuela Almeida, Jorge Malheiro, La Salete Martins, and António Cabrita
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Transplantation ,Nephrology - Abstract
BACKGROUND AND AIMS Living donor kidney transplantation (LDKT) provides the best outcomes of all renal replacement modalities, including survival and quality of life. Studies on the association between pre-donation estimated glomerular filtration rate (eGFR) and graft outcomes have yielded inconsistent results. Two eGFR thresholds are generally used to accept or deny a donor (respectively, ≥90 and METHOD This is a unicentric retrospective observational study that included the LDKT pairs submitted to transplant between 2008 and 2017. We gathered clinical data, including donor's comorbidities, immunological features of the transplant, the occurrence of acute rejection episodes in the first year, and graft eGFR during the follow-up period. For statistical purposes, we split the donors in three groups: group 1, with eGFR ≥90 mL/min/1.73 m2; group 2, eGFR RESULTS We studied 210 donor-recipient pairs. The average age at the time of transplant was 48.0 ± 10.6 years for donors and 41.3 ± 13.3 years for recipients. Pre-donation eGFR was 100.1 ± 14.2 mL/min/1.73 m2 and most donors (78%) were in group 1 (eGFR 105.9 ± 9.4 mL/min/1.73 m2). We found two independent predictors of death censored graft failure: the occurrence of rejection episode(s) during the first year (HR: 4.99, CI: 1.44–17.26, P = 0.011) and having a donor from group 3 (HR: 5.14, CI: 1.49–17.75, P 0% (HR: 3.802, CI: 1.387–10.489, P = 0.010) and donor from group 3 (HR: 3.514, CI: 1.087–11.355, P = 0.036). At 1-year after transplant, the recipients from group 1 had a significantly higher eGFR than patients from group 2, but did not differ from group 3 (respectively, 60.8 versus 54.4 [P CONCLUSION This study suggests that in LDKT, when donors’ eGFR is borderline (
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- 2022
39. Does Cystatin C have a role as metabolic surrogate in peritoneal dialysis beyond its association with residual renal function?
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Carla Leal Moreira, Liliana Cunha, Sofia Correia, Filipa Silva, Ana Castro, Joana Tavares, Maria João Carvalho, José Carlos Oliveira, Olívia Santos, António Cabrita, and Anabela Rodrigues
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Adult ,Male ,Risk ,medicine.medical_specialty ,Doenças Cardiovasculares ,medicine.medical_treatment ,030232 urology & nephrology ,Renal function ,Inflammation ,Disease ,030204 cardiovascular system & hematology ,urologic and male genital diseases ,Gastroenterology ,Peritoneal dialysis ,Cohort Studies ,03 medical and health sciences ,Diálise Peritoneal ,0302 clinical medicine ,Serum cystatin ,Internal medicine ,medicine ,Humans ,Cystatin C ,Cistatina C ,Aged ,Glycated Hemoglobin ,biology ,business.industry ,Original Articles ,General Medicine ,Middle Aged ,Multifrequency bioimpedance ,Diseases of the genitourinary system. Urology ,C-Reactive Protein ,Cross-Sectional Studies ,Cardiovascular Diseases ,Metabolome ,biology.protein ,Female ,RC870-923 ,medicine.symptom ,business ,Peritoneal Dialysis ,Biomarkers ,Glomerular Filtration Rate ,Cohort study - Abstract
Introduction: It has been suggested that cystatin C levels are modified by obesity and inflammation. Furthermore, cystatin C has been associated with cardiovascular events and mortality outcomes. Aim: To study the association of cystatin C with the metabolic profile and cardiovascular disease of peritoneal dialysis patients. Methods: Data collected included clinical, laboratorial, and multifrequency bioimpedance assessment of 52 stable peritoneal dialysis patients. Minimal residual renal function was defined as > 2mL/min/1.73m2. Results: Serum cystatin C was not significantly associated with peritoneal or urinary cystatin C excretion. Negative correlation of cystatin C with normalized protein catabolic rate (rho -0.33, p = 0.02) and a trend towards positive correlation with relative body fat (rho 0.27, p = 0.05) were not independent from residual renal function. Cystatin C was not significantly associated with cardiovascular disease (p = 0.28), nor with glycated hemoglobin (p = 0.19) or c-reactive protein (p = 0.56). In the multivariate model, both age and diabetes were the strongest predictors of cardiovascular disease (odds ratio 1.09, p = 0.029 and odds ratio 29.95, p = 0.016, respectively), while relative body fat was negatively associated with cardiovascular disease (p = 0.038); neither cystatin C (p = 0.096) nor minimal residual renal function (p = 0.756) reached a significant association with cardiovascular disease. Conclusions: In this group of peritoneal dialysis patients, cystatin C did not correlate with the metabolic or inflammatory status, nor cardiovascular disease, after adjustment for residual renal function. Introdução:: Tem sido sugerido que os níveis de cistatina C são modificados pela obesidade e inflamação. Além disso, a cistatina C tem sido associada a eventos cardiovasculares e desfechos de mortalidade. Objetivo:: Estudar a associação da cistatina C com o perfil metabólico e doença cardiovascular de pacientes em diálise peritoneal. Métodos:: Os dados coletados incluíram avaliação clínica, laboratorial e de bioimpedância múltipla de 52 pacientes estáveis em diálise peritoneal. A função renal residual mínima foi definida como > 2mL/min/1,73m2. Resultados:: A cistatina C sérica não esteve significativamente associada à excreção peritoneal ou urinária. A correlação negativa da cistatina C com a taxa catabólica protéica normalizada (rho -0,33, p = 0,02) e uma tendência de correlação positiva com a gordura corporal relativa (rho 0,27, p = 0,05) não foram independentes da função renal residual. A cistatina C não se associou significativamente à doença cardiovascular (p = 0,28), nem com hemoglobina glicada (p = 0,19) ou proteína C reativa (p = 0,56). No modelo multivariado, idade e diabetes foram os mais fortes preditores de doença cardiovascular (razões de probabilidade 1,09, p = 0,029 e 29,95, p = 0,016, respectivamente) enquanto a gordura corporal relativa se associou negativamente à doença cardiovascular (p = 0,038). A cistatina C não se associou significativamente com doença cardiovascular (p = 0,096), tampouco a função residual mínima (p = 0,756). Conclusão:: Neste grupo de pacientes em diálise peritoneal, a cistatina C não se correlacionou com o estado metabólico ou inflamatório, nem com doença cardiovascular, após ajuste para função renal residual. info:eu-repo/semantics/publishedVersion
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- 2020
40. Carta a Maria Velho da Costa
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António Cabrita
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- 2020
41. Refractory diffuse podocytopathy
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João Oliveira, Inês Sala, Joana Freitas, Joana Tavares, Sofia Santos, Andreia Campos, Josefina Santos Lascasas, Teresa Mendonça, and António Cabrita
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Nephrology - Published
- 2022
42. Diet and exercise induced hypokalemia
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João Oliveira, Joana Freitas, Inês Sala, Joana Tavares, Sofia Santos, and António Cabrita
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Nephrology - Published
- 2022
43. ANCA-associated vasculitis and Igg4-related disease: An overlap syndrome or two distinct diseases?
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Inês Sala, Joana Freitas, João Oliveira, Josefina Santos, Ana Castro, and António Cabrita
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Nephrology - Published
- 2021
44. Emergent coronary angiography in a 90-plus population – outcomes at 5-years follow-up
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António Cabrita, AF Amador, C Marques, P D Grilo, Filipe Macedo, C X Resende, R Alves Pinto, T Proenca, J Calvao, S Torres, Patrícia Dias, C Costa, and M Martins Carvalho
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Coronary angiography ,medicine.medical_specialty ,education.field_of_study ,business.industry ,Internal medicine ,Population ,medicine ,Cardiology ,Cardiology and Cardiovascular Medicine ,education ,business - Abstract
Introduction Elderly people represents a vulnerable and increasing population presenting with acute coronary syndrome (ACS). Several data suggest the benefit of an early revascularization in ST-elevation (STE)-ACS or non-STE-ACS with positive troponin. However questions persist considering the unavoidable adverse prognosis, patient's functional and cognitive status, comorbidities and preferences. Purpose To evaluate a group of very old patients who underwent emergent coronary angiography (CA). Methods We retrospectively analyzed a group of very old patients (≥90 year-old) who underwent emergent CA from January 2008 to September 2020. Clinical features were collected; survival and MACE were compared with an aged-matched control population with ACS not submitted to emergent CA. MACE was defined as a composite of all-cause death, ischemic stroke, ACS or hospitalization for acute heart failure. Results A total of 34 patients were enrolled: 56% female, with mean age 92±2 year-old. As for the cardiovascular risk factors, 88% had hypertension, 49% dyslipidaemia, 12% diabetes and 15% were previous smokers. Concerning other comorbidities, 27% had atrial fibrillation, 21% chronic kidney disease, 12% had cerebrovascular disease and median modified Rankin scale for neurologic disability was 2. Almost all patients had STE-ACS, 68% anterior and 29% inferior, inferolateral or inferoposterior infarction; 3% had infarction of indeterminate location. In CA, 65% had multivessel disease, 14% of them involving left main coronary artery; coronary intervention was performed in 71% of patients (mostly stent implantation), the remaining 29% had no invasive treatment. Concerning to clinical status, median troponin was 131 517 ng/L and median BNP 496 pg/mL; 36% of patients evolved in Killip class III or IV and only 32% of patients had normal left ventricular systolic function. Regarding mortality, 38% of patients died in the index-event versus 25% in the aged-matched control group (p=0.319). During five years of follow-up, there was no significant difference in mortality between the two groups (Log Rank, p=0.403) and more than 50% of patients died in two years. Comparing MACE occurrence, both groups were similar (Log Rank, p=0,662), with more than 80% having at least one event in five years. Conclusion Very old patients submitted to emergent CA had a high percentage of multivessel disease, left ventricular dysfunction and mortality during hospitalization. Compared to an aged-matched control group, they showed no survival or MACE benefit of emergent CA strategy during a five-years follow-up. Although this is a small study, these findings highlight the efforts that should be made to optimize care in this vulnerable population, under-represented in the clinical trials. Special caution should be given to avoid possible unnecessary discomfort in this setting. Funding Acknowledgement Type of funding sources: None. MACE analysis
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- 2021
45. The role of coronary collateral circulation in patients presenting with acute left main coronary artery occlusion
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B Brochado, Ricardo J.B. Pinto, C Marques, C Costa, J Silveira, AF Amador, João Carlos Silva, Filipe Macedo, M Martins Carvalho, António Cabrita, A Campinas, A Alexandre, M Braga, J Calvao, and T Proenca
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Coronary artery occlusion ,medicine.medical_specialty ,business.industry ,Internal medicine ,Cardiology ,Medicine ,In patient ,Cardiology and Cardiovascular Medicine ,business ,Collateral circulation - Abstract
Introduction Acute occlusion of the unprotected left main coronary artery (LMCA) is an uncommon occurrence associated with a dismal prognosis. Whereas the role of early recruited coronary collateral circulation (CC) in prognosis of ST-segment elevation acute myocardial infarction (STEMI) patients is still controversial, it seems to be important in patients with acute LMCA occlusion. This study aimed to evaluate the coronary CC in patients with acute LMCA occlusion and its impact in short and long-term outcomes. Methods In a retrospective two-center study, we identified 7630 patients with STEMI or high-risk non-ST segment elevation myocardial infarction who underwent emergent coronary angiography between January 2008 and December 2020. Among this cohort, we analyzed 83 patients who presented with unprotected LMCA acute occlusion (Thrombolysis In Myocardial Infarction – TIMI ≤2) and classified them in 2 groups based on the degree of CC through the right coronary artery as seen in the emergent angiography: patients with no filling of collateral vessels or filling of collateral vessels without any epicardial filling of the occluded vessel [Rentrop class 0–1 (71 patients)]; and patients with partial or complete epicardial filling by collateral vessels [CC Rentrop class 2–3 (12 patients)]. Results Compared to patients with CC Rentrop 0–1, patients with CC Rentrop 2–3 presented significantly later to medical attention (symptom to coronary angiography time 8.7 vs 4.3 hours, p=0.02). Despite that, patients with CC Rentrop 2–3 had a significantly lower prevalence of cardiogenic shock at admission (16.7 vs 57.7%, p=0.01). During hospitalization, Killip class III-IV presentation (33.3 vs 88.7%, p Conclusion A well-developed coronary CC was associated to lower short-term mortality in patients presenting with acute occlusion of the unprotected LMCA. Nevertheless, in patients surviving index-event, there was no difference in the long-term outcomes. Further studies are needed to clarify if clinical approach (eg. early short-term mechanical circulatory support) of patients with CC Rentrop 0–1 should be different from those with CC Rentrop 2–3 in order to improve the outcomes of the former patients. Funding Acknowledgement Type of funding sources: None.
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- 2021
46. Myocardial infarction in the absence of obstructive coronary artery disease - can the underlying causes be identified by cardiac magnetic resonance?
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C Costa, M Martins Carvalho, António Cabrita, Filipe Macedo, J Calvao, S Torres, Marcus Barreto Vasconcelos, C X Resende, T Proenca, C Marques, P D Grilo, AF Amador, and Ricardo Alves Pinto
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medicine.medical_specialty ,Myocarditis ,Ejection fraction ,biology ,business.industry ,Ischemia ,Atrial fibrillation ,General Medicine ,medicine.disease ,Troponin ,Coronary artery disease ,Internal medicine ,Diabetes mellitus ,medicine ,Cardiology ,biology.protein ,Radiology, Nuclear Medicine and imaging ,Myocardial infarction ,Cardiology and Cardiovascular Medicine ,business - Abstract
Funding Acknowledgements Type of funding sources: None. Background Myocardial Infarction in the Absence of Obstructive Coronary Artery Disease (MINOCA) is a clinical entity that occurs in up to 15% of all acute coronary syndromes (ACS). It is a "working diagnosis", as it is constituted by several etiologies. Purpose To identify the utility of CMR in determining the etiological diagnosis of MINOCA events, with potential impact in the therapeutic management of these patients. Methods Patients with MINOCA who were admitted to the Cardiology department at a tertiary center, between 2015 and 2020, were included. MINOCA was defined as an ACS with non-obstructive ( Results In a population of 29 patients, the mean age was 55 ± 17 years-old at the time of the cardiac event, 51.7% were male. Concerning to cardiovascular risk factors, 58.6% of patients had dyslipidaemia, 51.7% had hypertension, 13.7% were diabetic, 41.4% were smokers or previous smokers and 31.0% had obesity. Atrial fibrillation was present in 3.4% of patients. As for the EKG patterns, 41.4% of the patients had ventricular repolarization changes, 13.8% had a transitory ST elevation pattern, 6.9% had a complete left bundle branch block and 37.9% had a normal EKG; most of the ischemic EKG alterations were on the anterior wall (66.7%). The median high sensitivity I troponin levels were 1877.5 (IQR 225.3 – 5985.8) ng/L. The majority of patients (58.6%) had echocardiographic wall motion abnormalities; of those, the most common (41.1%) were on the left anterior descendent artery territory. CMR (performed at a median of 5 days from presentation) was able to identify the cause for the troponin rise in 58.6% of the cases; late gadolinium enhancement and oedema were present in 41.4% and 62.1% of patients, respectively. The mean left ventricle ejection fraction (EF) was 57.7 ± 8.5% and the mean right ventricle EF was 61.5 ± 6.1%. An ischemic pattern was present in 29.4% of the total population. In 17.6% of the patients findings were consistent with Takotsubo syndrome and in 29.4% with myocarditis. Conclusion CMR established the etiological cause in 58.6% of the cases, with potential implications in medical therapy. These findings highlight the importance of CMR in MINOCA diagnosis and the potential improvement in patient care with multi-modality imaging.
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- 2021
47. Dados demográficos, características clínicas e peso da doença cardiovascular em uma coorte portuguesa de pacientes idosos com doença renal crónica
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Sofia Santos, Carla Moreira, Idalina Beirão, Sofia Correia, António Cabrita, Luísa Lobato, Isabel Fonseca, Ana I. Gómez de Castro, Jorge Malheiro, Andreia Campos, and Josefina Santos Lascasas
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Male ,Aging ,Doenças Cardiovasculares ,030232 urology & nephrology ,Comorbidity ,lcsh:RC870-923 ,Body Mass Index ,0302 clinical medicine ,Risk Factors ,Prevalence ,Longitudinal Studies ,030212 general & internal medicine ,Aged, 80 and over ,education.field_of_study ,Incidence ,Idoso ,Incidence (epidemiology) ,General Medicine ,Cardiovascular Diseases ,Creatinine ,Hypertension ,Cohort ,Female ,Glomerular Filtration Rate ,medicine.medical_specialty ,Insuficiência Renal Crónica ,Population ,Insuficiência Renal Crônica ,03 medical and health sciences ,Internal medicine ,Diabetes Mellitus ,medicine ,Humans ,Renal Insufficiency Chronic ,Cognitive Dysfunction ,Renal Insufficiency, Chronic ,Risk factor ,education ,Disease burden ,Dyslipidemias ,Aged ,Portugal ,business.industry ,Original Articles ,lcsh:Diseases of the genitourinary system. Urology ,medicine.disease ,Kidney Failure, Chronic ,business ,Body mass index ,Follow-Up Studies ,Kidney disease - Abstract
Introduction: Chronic kidney disease (CKD) is an independent risk factor for several unfavorable outcomes including cardiovascular disease (CVD), particularly in the elderly, who represent the most rapidly growing segment of the end-stage kidney disease (ESKD) population. Portugal has the highest European unadjusted incidence and prevalence rates of ESKD. In 2012, we started to follow a cohort of elderly CKD patients, we describe their baseline characteristics, risk profile, and cardiovascular disease burden. Methods: All CKD patients aged 65 years and older referred to our department during 2012 were enrolled. Baseline data included: demographic, CKD stage, medication, comorbid conditions. Estimated glomerular filtration rate (eGFR) was calculated by the CKD-EPI formula. Results: A total of 416 patients, 50% referred by primary care physicians, aged 77 ± 7 years, 52% male, with a median eGFR of 32 mL/min/1.73m2 participated in the study. Fifty percent had diabetes (DM), 85% dyslipidemia, 96% hypertension; 26% were current/former smokers, and 24% had a body mass index > 30 kg/m2. The prevalence of CVD was 62% and higher in stage 4-5 patients; in diabetics, it gradually increased with CKD progression (stage 3a < stage 3b < stage 4-5) (39, 58, 82%; p < 0.001). Conclusions: At baseline, our CKD elderly cohort had a higher burden of CVD. The prevalence of CVD was greater than in other European CKD cohorts. Lower level of eGFR was associated with a greater burden of CVD and was more pronounced in diabetics, highlighting the importance of strategically targeting cardiovascular risk reduction in these patients. Introdução: Doença renal crônica (DRC) é fator de risco independente para vários desfechos desfavoráveis, incluindo doença cardiovascular (DCV), particularmente em idosos, o segmento de crescimento mais rápido da população com doença renal terminal (DRT). Portugal tem a maior incidência europeia não-ajustada e a maior prevalência de DRT. Neste artigo caracterizamos uma coorte de idosos com DRC, referenciados para a nefrologia, com particular ênfase para o risco e carga de doença cardiovascular. Métodos: Foram incluídos todos os pacientes com DRC com 65 anos ou mais encaminhados ao nosso departamento em 2012. Os dados basais incluíram: demografia, estágio da DRC, medicação e comorbidades. A taxa de filtração glomerular (TFGe) foi calculada pela fórmula CKD-EPI. Resultados: Metade dos 416 pacientes incluídos foram encaminhados por médicos da atenção primária; sua idade era 77 ± 7 anos; 52% eram homens; a TFGe mediana era de 32 mL /min/1,73 m2. Metade tinha diabetes (DM), 85% dislipidemia, 96% hipertensão; 26% eram fumantes atuais/ antigos; 24% tinham índice de massa corporal > 30 kg/m2. A prevalência de DCV foi de 62%, sendo maior entre pacientes nos estágios 4-5; em diabéticos, aumentou gradualmente com a progressão da DRC (estágio 3a < estágio 3b < estágio 4-5) (39%, 58%, 82%; p < 0,001). Conclusões: A coorte de idosos com DRC apresentava inicialmente maior carga de DCV. A prevalência de DCV foi maior que em outras coortes europeias com DRC. Níveis menores de TFGe foram associados a carga maior de DCV e foram mais pronunciados entre diabéticos, destacando a importância de objetivar estrategicamente a redução do risco cardiovascular nesses pacientes. info:eu-repo/semantics/publishedVersion
- Published
- 2019
48. MO815BEYOND SURVIVAL: COMPARISON OF HEMODIALYSIS AND CONSERVATIVE MANAGEMENT IN ELDERLY AND FRAIL STAGE 5 CHRONIC KIDNEY DISEASE PATIENTS
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Inês Sala, Joana Freitas, Josefina Santos Lascasas, Joana Tavares, Andreia Campos, António Cabrita, Ana I. Gómez de Castro, and João Oliveira
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Transplantation ,medicine.medical_specialty ,Stage 5 chronic kidney disease ,Conservative management ,Nephrology ,business.industry ,Internal medicine ,medicine.medical_treatment ,Medicine ,Hemodialysis ,business - Abstract
Background and Aims With the geriatric population increasing, the patients reaching stage 5 chronic kidney disease (CKD) are older, frailer and have multiple comorbidities. Technological advances in renal replacement therapy (RRT) and easier access to dialysis resulted in an expansion on geriatric dialysis population. Conservative management (CM) is an option that should be considered in this population, where is crucial to balance the survival and quality of life. Beside mortality, with this study we aim to evaluated patient-outcomes (hospitalization, falls and functional capacity) in older and frailer stage 5 CKD patients receiving hemodialysis (HD) and in CM. Method We conducted a single center retrospective study in older (≥ 75years), frailer (Clinical Frailty Scale – CFS ≥ 5) and with multiple comorbidities (modified Charlson comorbidity index – mCCI ≥ 5 and) stage 5 CKD patients, admitted in our Nephrology department between January 1, 2014 to December 31, 2020. The eGFR was calculated through Chronic Kidney Disease Epidemiology Collaboration formula (CKD-EPI) at the time of decision or at the time of starting HD. The comorbidities were stratified using the mCCI and frailty was assessed with CFS at the time of decision in CM group (CMG) and at the start of HD (HDG). We evaluated hospitalizations, falls, CFS one-year later and survival in each group. Survival analysis was performed using the Kaplan–Meier method and was calculated at the beginning of RRT or eGFR ≤ 15ml/min/1.73m2 in CMG. Differences between the two groups were tested with Mann-Whitney U method. Results A total of 76 patients with indication to start RRT were included: 61.8% (n=47) initiated HD and 38.2% (n=29) were in CM. The reasons for CM decision were deterioration of clinical condition (n=11), expected survival less than 6 months (n=8), patient option (n=5) and cognitive impairment (n=5). Clinical characteristics are presented in Table 1. The CMG was older [median, IQR: 88 (85.5-90.5) vs 80 (77.0 – 83.0), p < 0.001] and had a lower BMI [23.44 (21.08 - 25.08) vs 26.23 (23.26 – 29.20), p=0.006]. Both groups did not differ significantly in terms of sex, CKD etiology, comorbidity or frailty. A total of 66 patients died at the end of the study [CMG 100% (n= 29) vs 78.7% HDG (n=37)]. The overall survival has higher on the HDG compared to the CMG with a median survival rate of 503 days (Fig 1). One-year survival rate was 53.5% in HDG vs 24% CMG (p Conclusion In our study, hemodialysis was associated to improved survival in older and frailer stage 5 CKD patients compared to CM. However, this group had more hospitalizations, falls and poor functional status. These outcomes have a crucial impact on quality of life in this population and should be consider at the time of treatment decision. One of the limitations of our study was small sample size in both groups. In the future, we consider that is important to perform multicenter studies focused on patients-outcomes. We also think that it’s important to understand the patient and family perspective in terms of quality of life and symptom burden associated to each treatment option.
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- 2021
49. Secondary prevention after acute coronary syndrome - can we achieve dyslipidemia guideline targets?
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M Martins Carvalho, C Costa, AF Amador, T Proenca, Filipe Macedo, J Calvao, S Torres, Andressa Rego da Rocha, Patrícia Dias, Joana Rodrigues, Ricardo Alves Pinto, C X Resende, C Marques, P D Grilo, and António Cabrita
- Subjects
Secondary prevention ,medicine.medical_specialty ,Acute coronary syndrome ,Epidemiology ,business.industry ,medicine ,Guideline ,Cardiology and Cardiovascular Medicine ,Intensive care medicine ,business ,medicine.disease ,Dyslipidemia - Abstract
Funding Acknowledgements Type of funding sources: None. Lipid control is one of the most important secondary cardiovascular prevention targets. The 4S trialin 1994 was the first study to demonstrate the benefit of statin therapy in coronary artery disease patients. More recently, the FOURIER trial (2017) and the ODYSSEY Outcomes (2018) demonstrated the cardiovascular benefit of adding a PCSK9 inhibitor to optimized antidyslipidemic therapy. Owing to the growing number of evidence showing the importance of aggressive lipid control, the European Society of Cardiology (ESC) 2019 Dyslipidemia Guidelines changed the recommendation of LDL targets from below 70 mg/dL to below 55 mg/dL in very high risk patients. In the light of this new recommendation, we retrospectively analysed all patients who participated in a Coronary Rehabilitation Program (CRP) after an Acute Coronary Syndrome at a tertiary center from May 2008 to June 2019. The CRP consisted in a multi-disciplinary approach to these patients, including 8 to 12 weekly sessions of phase II rehabilitation, exercise prescription, nutrition counselling and life-style intervention, with Cardiology follow-up at the end of the CRP (3 months), 6 months and 12 months after the event. Lipid profile was requested at baseline, 3 months and 12 months after the event. Dyslipidemia was defined using the ESC Guidelines definition. In total, 989 patients were enrolled: the mean age was 54 ± 10 years and 15% were female. Concerning to cardiovascular risk factors, 56.7% of patients had dyslipidaemia, 41.5% had hypertension, 18.1% were diabetic, 73.1% were smokers or previous smokers, 26.0% had family history of coronary disease and 14.0% had previous coronary disease. At hospital admission, mean LDL concentration was 121,7 ± 38,8 mg/dL with 2,9% of the patients with values below 55 mg/dL and 7,6% below 70 mg/dL. The vast majority of patients were medicated with statin at hospital discharge and maintained the prescription during the follow-up (97.5% and 97.1%, respectively). At the end of the CRP, there was a significant decrease of LDL values (p In conclusion, our real-life observational cohort showed that guideline recommended LDL target is not achieved in most of very high-risk patients even in a structured coronary rehabilitation program. Of note, the number of patients at LDL-target decreased from 3 months to 1-year follow-up. This state the importance of a sustained healthy lifestyle and therapy adherence, with aggressive pharmacologic therapy.
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- 2021
50. Is There a Future for Conceptual Art?
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António Cabrita
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Style (visual arts) ,Art world ,Cleavage (politics) ,Heteronomy ,Aesthetics ,media_common.quotation_subject ,PICASSO ,Citizen journalism ,Art ,Hermeneutics ,Contemporary art ,media_common - Abstract
Duchamp caused a revolution in the art of the twentieth century with the readymade concept, and simultaneously he opened Pandora's Box, which converted art into a simulation and made it dependent on discursive practices. This degenerated into a deconstructive vulgate when, from the 1960s onwards, an ‘aesthetic of banality’ was accentuated and the media institutionalized the ‘guerrilla’ between the practices and the discourses. Art ‘wrecked’ in a regime of hyper-reality of the image, and the art paradigms and criteria shifted from aesthetics to the law of the financial markets. At the same time, the proliferation of coexisting cultural ideas and a revolving cultural miscegenation ended up splitting the kingdom of the art. In the art world today, there is a cleavage between artists: on one side, the adepts to the heteronomy (a line that was born with ready-made products), those who, following dominant rules, work for the market and the organizations; on the other side, those, more passionate, for whom art is a hermeneutics for self-knowledge. Meanwhile, Picasso's aura returns to the art scene, in a panorama that until now was adverse to him.
- Published
- 2021
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