Miriam Alvo's research while affiliated with Hospital Clínico Universidad de Chile and other places

Publications (21)

Article
Full-text available
End-stage renal disease (ESRD) patients are a population with high rates of COVID-19 and mortality. These patients present a low response to anti-SARS-CoV-2 immunization, which is associated with immune dysfunction. ESRD patients also present high plasma titers of Fibroblast Growth Factor 23 (FGF23), a protein hormone that reduces immune response i...
Article
Full-text available
Background: Anticoagulation in continuous renal replacement therapy (CRRT) is essential to counteract the coagulation cascade activation, induced by the dialysis circuit. Heparin is the most widely used anticoagulant, followed by regional citrate anticoagulation (RCA). Aim: To determine the effectiveness and safety of anticoagulant treatment with...
Article
Background and Aims Diabetic nephropathy is one of the main causes of chronic kidney disease (CKD) in the world. In the past years new studies using SGLT-2 inhibitors in diabetic patients have shown benefit in both mortality and progression of CKD. However, these works show heterogeneity between studies regarding the severity of CKD of patients inc...
Article
Full-text available
Renal involvement is a frequent complication in antineutrophil cytoplasmic antibodies (ANCA)associated vasculitides, adding morbidity and mortality, such as chronic kidney disease and the need for renal replacement therapy. With the aim of reaching a consensus on relevant issues regarding the diagnosis, treatment and follow-up of patients with thes...
Article
Full-text available
Background: Encapsulating peritoneal sclerosis (EPS) is a complication of peritoneal dialysis (PD) with a low prevalence but high mortality. It is characterized by peritoneal inflammation and fibrosis with subsequent development of intestinal encapsulation. It is associated with a long lapse on PD, frequent episodes of peritonitis, high glucose so...
Article
Full-text available
Renal involvement affects over one half of patients with Systemic Lupus Erythematosus increasing their mortality and morbidity, including chronic renal disease and the need of renal replacement therapies. Aiming to achieve a consensus in the most relevant topics on diagnosis, therapy and follow-up of patients with lupus renal disease, the Chilean S...
Article
Full-text available
Background: Vitamin B12 and folic acid deficiency are common in the older and are associated with several conditions including anaemia, cardiovascular disease, cognitive impairment and cancer. Evidence from in vitro studies suggests that solar radiation can degrade both vitamins in the skin. Chile is the longest country in the world running perfec...
Article
The key messages of these guidelines on chronic kidney disease are: Chronic kidney disease (CKD) is a public health problem due to its wide distribution, high rate of complications and cost. CKD is a common condition, its prevalence being about 10%, and is treatable if it is detected on time. A patient with CKD has a higher risk of cardiovascular m...
Article
Full-text available
The key messages of these guidel ines on chronic kidney disease are: • Chronic kidney disease (CKD) is a public health problem due to its wide distribution, high rate of complications and cost. • CKD is a common condition, its prevalence being about 10%, and is treatable if it is detected on time. • A patient with CKD has a higher risk of cardiovas...
Article
Full-text available
We present the analysis of an intronic polymorphism of the nephrin gene and its relationship to the development of diabetic nephropathy in a study of diabetes type 1 and type 2 patients. The frequency of the single nucleotide polymorphism rs#466452 in the nephrin gene was determined in 231 patients and control subjects. The C/T status of the polymo...
Article
Despite a better management of the variables that influence the development of diabetic nephropathy there is a progressive increase in the prevalence of terminal renal failure among diabetics, whose cause is not clear. To study in a group of patients in hemodialysis, the quality of diabetes control previous to the entry to dialysis, their physical...
Article
Full-text available
Despite a better management of the variables that influence the development of diabetic nephropathy, there is a progressive increase in the prevalence of terminal renal failure among diabetics, whose cause is not clear. Aim: To study, in a group of patients in hemodialysis, the quality of diabetes control previous to the entry to dialysis, their ph...
Article
Full-text available
Diabetic nephropathy (DN) is one of the major complications of type 2 diabetes and is associated with coronary disease. Nephrin, a protein mainly expressed in glomeruli, is decreased in DN and other kidney diseases. Since insulin levels are misregulated in type 2 diabetes, a possible connection between DN and its decreased nephrin expression could...
Article
Clostridium difficile is the main agent causing antimicrobial associated nosocomial diarrhea. Chronic renal failure is a risk factor for this type of diarrhea. To study the incidence and complications of Clostridium difficile diarrhea in a university hospital and among patients with renal diseases. Retrospective review of all cases of Clostridium d...
Article
Hypotension occurs in 20% of hemodialysis procedures. To study the effects of midodrine on hypotension during hemodialysis. Ten patients on chronic hemodialysis and with a history of hypotension during the procedure, were studied. They received midodrine 10 mg per os or placebo during 5 dialytic procedures each, in a double blind cross over design....
Article
In the last two decades, the use of erythropoietin for the correction of anemia in hemodialysis patients has been recommended. In Chile, only 10% of hemodialysis patients use erythropoietin, therefore, the correction of iron deficiency must be optimized. To report the effects of intravenous iron without erythropoietin in the management of anemia in...

Citations

... La transmisión de este virus se produce a través del contacto entre personas y tiene incidencia relevante en la mortalidad y morbilidad 3 . Debido a su rápido avance, las autoridades de salud implementaron medidas de control 4 , adicionalmente y con el propósito de reducir la propagación se iniciaron cuarentenas masivas en todos los continentes, situación que afectó a gran parte de la ciudadanía 5 , incluida la población chilena 6 . En la actualidad investigadores continúan estudios para el desarrollo y aplicación de vacunas masivas 7 y se ha autorizado el uso de emergencia de varias de ellas 8 , las que han tenido favorables resultados 9 . ...
... While the negative relationship between outdoor temperature and BP readings has been observed in many studies (63)(64)(65)(66)(67), similar relationship was hypothesized for arterial stiffness, but studies reported inconsistent results. Di Pilla et al. reported that in an unadjusted regression analysis, cfPWV recorded by SphygmoCor was weakly and inversely associated with outdoor temperature, but not in a multiple regression analysis that controlled for age, BMI, SBP, DBP, daylight hours, O 3 , CO, and N 2 O (25). ...
... [1][2][3] Genetic and environmental factors play important roles in its pathogenesis. [4][5][6][7][8] Disease manifestations and severity vary according to the patients' racial/ethnic background and socioeconomic status (SES). 1 9 10 Data from Grupo Latino Americano de Estudio del Lupus (GLADEL), Lupus in Minorities: Nature vs Nurture (LUMINA) and the Lupus Family Registry and Repository cohorts have demonstrated that Latin American and North American Mestizo patients (mixed Amerindian and European ancestry), African descendants and Native Americans develop lupus earlier 11 12 although diagnostic delays may occur. 1 They also experience more severe disease, have higher disease activity levels, 1 accrue more organ damage 2 and have higher mortality rates, 1 succumbing mainly to disease activity and/or infections. 1 3 13-15 Although guidelines for SLE treatment do exist and there is scarce evidence to support specific therapies for Latin American patients with lupus, [16][17][18][19][20][21] this regional effort has considered the impact of racial/ethnic background 1 10 22-28 and SES 3 9 on lupus outcomes and treatment response. 25 26 Other medication variables such as cost and availability were also taken into account since they affect adherence and are relevant in decision-making. ...
... Type 2 diabetes is a prevalent condition globally and in Chile, affecting 12% of adults [1] and costing US$2 billion/year or 0.9% of that country's gross domestic product [2]. In response, the Chilean Ministry of Health has implemented a cardiovascular care program using the Chronic Care Model (CCM) [3]. ...
... Taking into account previous publications on the same geographic region, [24][25][26] there is an evident increase in incidence, changing from a moderate-risk zone to a high-risk zone for HF. 1 It is the first reported high-risk zone for HF in the country. Furthermore, it has been reported that the Latin American population suffers mostly from extracapsular HF. 24 Population studies of adults aged 65 years or older without HF in the same country have shown the following prevalence of B12 deficiency (with WHO cut-off points): Sánchez et al. 27 report 12% in a sample of 1028 subjects, increasing to 25.4% when marginal deficiency is included; Cabrera et al. 28 report 11.3% in a similar sample of 1013 subjects; and Castillo-Lancellotti et al. report 8.1% in a sample of 1043 subjects. 29 The results of this study show higher prevalence levels than these. ...
... If there is a renal disorder that affects glomerular structure and function, it is characterized as glomerular fibrosis, whereas infections or proteinuria will lead to tubulointerstitial fibrosis [17]. Curiously, the development of fibrosis in the tubulointerstitium is the foremost predictor for the progression to ESRD in diabetic nephropathy (DN) [18]. DN is considered to be a syndrome [19] characterized by leakage of albumin, metabolites, and ions into the urine, alterations in the GFR, and a higher prevalence of stroke and cardiovascular diseases [20,21]. ...
... Es importante señalar que en los primeros años de instaurada la diálisis en Chile, no se aceptaban pacientes diabéticos por tener menor sobrevida y mayor morbilidad, situación que ha variado radicalmente al demostrarse lo errado del concepto (48). ...
... Polymerase chain reaction (PCR): Conventional method of PCR amplification was used for genotyping of rs#466452 of the nephrin gene SNP by the method described by González et al. 14 The primer sequences used for DNA amplification are as follows: F 5'-ACAGCCTGTTGTC TGGGATTCACT-3'. 5'-GACCTTCAGTATGCAGCAACCACA-3'. ...
... Diabetic nephropathy (DN) is the main microvascular complication of diabetes often leading to CKD. As a matter of fact, DN is the main cause of dialysis admissions (34% of admissions) [14]. DN occurs when high blood glucose concentrations impair the function of renal blood vessels and glomerular and epithelial tubular cells [15]. ...
... 4 Moreover, although these studies were prospective, only one (total enrollment 10 patients) was actually randomized. 5 The remainder crossed patients unidirectionally from usual care/control to midodrine. This design is problematic considering the principle of regression to the mean, which states that in any series of complex phenomena that are dependent on many variables and chance is involved, extreme outcomes tend to be followed by more moderate ones. ...