Publications by authors named "Marcelo Lopes"

Background: The 24-h urine protein (24-hUP) excretion is the gold standard for evaluating proteinuria. This study aimed to evaluate the diagnostic efficacy of protein/creatinine ratio (PCR) for estimating 24-hUP at various levels of renal function and proteinuria levels.

Methods: A cross-sectional study was conducted between December 2021 and December 2023 in Salvador, Bahia-Brazil, as an extension of previously published data from the TUNARI study.

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Background/objective: A high prevalence of fatigue and a positive association between fatigue and post-hemodialysis recovery have been reported in predominantly white populations of maintenance hemodialysis (MHD) patients. The present study evaluates associations between self-reported fatigue by the 11-item Chalder Fatigue Questionnaire (CFQ-11) and the need for post-hemodialysis recovery in a predominantly African-descent MHD population.

Methods: A total of 233 patients (94% Black or Mixed-Race) participating in the "Prospective Study of the Prognosis of Patients on Maintenance Hemodialysis" (PROHEMO), Salvador, Brazil were recruited for this cross-sectional study.

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Article Synopsis
  • The study investigates acid-base imbalances in critically ill COVID-19 patients, using Stewart's quantitative approach to analyze minor ion distribution changes that traditional methods might miss.
  • Researchers aimed to link metabolic acidosis indicators with poorer clinical outcomes, such as higher mortality rates and longer hospital stays.
  • Among 211 analyzed patients, 70.6% experienced alkalosis, while only 13.3% showed acidosis; however, no severe acid-base imbalances were identified in this cohort, with older patients and those with more comorbidities facing worse outcomes.
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The tissue tropism and the wide host range of influenza A viruses are determined by the presence of sialic acid (SA) α2,3-Gal and SA α2,6-Gal receptors. Recent studies have shown that animals possessing both receptors allow for the rearrangement and emergence of new viral strains of public health importance. This study aimed to evaluate the expression and distribution of human and avian influenza A receptors in nine Neotropical snake species using lectin immunohistochemistry.

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Article Synopsis
  • - The study focused on analyzing 2,000 lymph node samples from slaughtered cattle in Brazil to assess the prevalence of diseases that can affect human health through zoonoses and foodborne illnesses.
  • - The most common finding was tuberculosis, accounting for 89.3% of cases, with histopathology being the most effective method for diagnosis, outpacing other tests.
  • - Various other diagnoses were made, including different types of lymphomas and neoplasms, indicating the importance of using histopathology alongside other techniques for accurate diagnosis in complex cases.
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  • * A study in Brazil analyzed data from adult patients who had serum creatinine tests from June 2018 to May 2021 and found that 42% of those tests did not include urinary albumin-to-creatinine ratio assessments, which are important for evaluating kidney health.
  • * The results showed that non-nephrologists were the main requesters of kidney function tests, indicating a need for better adherence to guidelines and promoting teamwork among healthcare professionals to enhance CKD management.
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Background: The bed nucleus of the stria terminalis (BNST) is a structure with a peculiar neurochemical composition involved in modulating anxietylike behavior and fear.

Aim: The present study investigated the effects on the BNST neurochemical composition and neuronal structure in critical moments of the postnatal period in gestational protein-restricted male rats' offspring.

Methods: Dams were maintained during the pregnancy on isocaloric rodent laboratory chow with standard protein content [NP, 17%] or low protein content [LP, 6%].

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Native and exotic avian species can act as reservoirs of pathogens, including bacteria and viruses, with conservation and public health implications. A retrospective study on the diagnosis and frequency of diseases in wild and exotic avian species was conducted. The occurrence of particular diseases was associated with the type of captivity or the bird's origin.

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Background: The existing data support the Chalder Fatigue Questionnaire (CFQ-11) as a valid instrument to assess fatigue in maintenance hemodialysis (MHD) patients. The objective of this work was to investigate whether self-reported fatigue can serve as an independent prognostic indicator for mortality in MHD patients.

Methods: The data are from 233 adult patients enrolled in the cohort "The Prospective Study of the Prognosis of Chronic Hemodialysis Patients" (PROHEMO) developed in Salvador, BA, Brazil.

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Background And Objective: Some studies on maintenance hemodialysis (MHD) patients report a longer survival, albeit with poorer health-related quality of life (HRQoL), and more depression symptoms in women than in men. Whether these gender differences vary with age is uncertain. We tested the associations of gender with mortality, depression symptoms, and HRQoL in MHD patients of different age groups.

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Stacked hetero-structures of two-dimensional materials allow for a design of interactions with corresponding electronic and mechanical properties. We report structure, work function, and frictional properties of 1 to 4 layers of MoS grown by chemical vapor deposition on epitaxial graphene on SiC(0001). Experiments were performed by atomic force microscopy in ultra-high vacuum.

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Early diagnosis is essential for the appropriate management of acute kidney injury (AKI). We evaluated the impact of an electronic AKI alert together with a care bundle on the progression and mortality of AKI. This was a single-center prospective study that included AKI patients aged ≥ 18 years, whereas those in palliative care, nephrology, and transplantation departments were excluded.

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Rationale & Objective: Studies in the United States and United Kingdom generally report better survival for Black than White patients undergoing maintenance hemodialysis, a finding not explained by differences in sociodemographics or comorbid conditions. It is not clear if such findings can be generalized to other countries. We investigated the association between race and mortality among a Black, White, and Mixed-Race sample of maintenance hemodialysis patients in Salvador, Brazil.

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Background: Gestational protein intake restriction-induced long-lasting harmful outcomes in the offspring's organs and systems. However, few studies have focused on this event's impact on the brain's structures and neurochemical compounds.

Aim: The present study investigated the effects on the amygdala neurochemical composition and neuronal structure in gestational protein-restricted male rats' offspring.

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Background: While high serum phosphorus levels have been related to adverse outcomes in hemodialysis patients, further investigation is warranted in persons receiving peritoneal dialysis (PD).

Methods: Longitudinal data (2014-17) from the Peritoneal Dialysis Outcomes and Practice Patterns Study (PDOPPS), a prospective cohort study, were used to examine associations of serum phosphorus with all-cause mortality and major adverse cardiovascular events via Cox regression adjusted for confounders. Serum phosphorus levels were parameterized by four methods: (i) baseline serum phosphorus; (ii) mean 6-month serum phosphorus; (iii) number of months with serum phosphorus >4.

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Canine distemper outbreak and coinfections in three giant anteaters and in a maned wolf has been described. Three giant anteaters developed respiratory and digestive clinical signs after the introduction of a maned wolf to a Wildlife Rehabilitation Center. The maned wolf and two anteaters died, and one anteater was euthanized.

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Background: Transcatheter aortic valve replacement (TAVR) is a worldwide adopted procedure with rapidly evolving practices. Regional and temporal variations are expected to be found.

Objective: To compare TAVR practice in Latin America with that around the world and to assess its changes in Latin America from 2015 to 2020.

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Rationale & Objective: Chronic kidney disease-associated pruritus has been linked with poorer mental and physical health-related quality of life (HR-QOL) in patients receiving hemodialysis. We used the Skindex-10 questionnaire and a single itch-related question to evaluate their prediction of HR-QOL.

Study Design: Prospective, international cohort.

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Background: Maternal undernutrition has been associated with psychiatric and neurological disorders characterized by learning and memory impairment.

Objective: Considering the lack of evidence, we aimed to analyze the effects of gestational protein restriction on learning and memory function associated with hippocampal cell numbers and neurodegenerative protein content later in life.

Methods: Experiments were conducted in gestational low- (LP, 6% casein) or regular-protein (NP, 17% casein) diet intake offspring.

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Aims: Cardiac troponin (cTn) and B-type natriuretic peptide (BNP) are elevated in haemodialysis (HD) patients, and this elevation is associated with HD-induced myocardial stunning/myocardial strain. However, studies using data from the international Dialysis Outcomes and Practice Patterns Study (DOPPS) have shown that these cardiac biomarkers are measured in <2% of HD patients in real-world practice. This study aimed to examine whether routinely measured N-terminal pro-BNP (NT-proBNP) and cTnI (contemporary assay) are more appropriate than clinical models for reclassifying the risk of HD patients who have the highest risk of death.

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Schistosomiasis remains a serious health issue nowadays for an estimated one billion people in 79 countries around the world. Great efforts have been made to identify good vaccine candidates during the last decades, but only three molecules reached clinical trials so far. The reverse vaccinology approach has become an attractive option for vaccine design, especially regarding parasites like spp.

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