El papel de la mujer a lo largo de la historia de la Nefrología / The role of women throughout the history of Nephrology

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Efficacy of a hepatitis B vaccination schedule with two cycles of four double doses of conventional vaccine and four doses of adjuvanted vaccine in chronic kidney disease patients evaluated for renal transplantation.

INTRODUCTION: The response to hepatitis B (HB) vaccine remains suboptimal among chronic kidney disease patients. The aim of this study was to analyze the efficacy of a hepatitis B vaccination schedule with two 4-double doses of conventional vaccine and four doses of adjuvant vaccine in chronic kidney disease patients evaluated for renal transplantation. METHODS: In this prospective study, we recruited chronic kidney disease patients evaluated for renal transplantation to receive four 40-µg doses of hepatitis B virus vaccine (0, 1, 2 and 6 months) and another four 40 µg doses of hepatitis B virus vaccine and four 20 µg doses of adjuvant vaccine if they were nonresponders. AntiHBs titers were analyzed before every vaccine dose and 1 month after the fourth dose. RESULTS: One hundred fifty-five patients were enrolled in the study. The response to the vaccination increased until the seventh dose: first dose, 5.4%; second, 29.5%; third, 66.7%; fourth, 75.9%; fifth, 83.3%; sixth, 87.3%; seventh, 92.5%; and eighth, 93.8%. AntiHBs titers after the first and second vaccination with Engerix were 10 to 99 mIU/mL in the 12% and 7.7%, 100 to 999 mIU/mL in the 30.1%, and 46.2%, and 1000 mIU/mL in the 34.9% and 15.4%, respectively. Fendrix was administrated in 6.2% of the patients and 75% of them obtained a response. AntiHBc-positive patients obtained a response with one vaccination cycle in the 71.4%. The response was influenced by age and was greater in women. Adverse events were found in 11.5% of the patients (inflammation and/or local pain), which were less frequent in men (8.9% versus 16.1%) and similar for both vaccines. CONCLUSION: The response to the hepatitis B vaccination with four double doses of conventional vaccine and revaccination with the same schedule and adjuvanted vaccine shows a high response rate in chronic kidney disease evaluated for renal transplantation.

Respuesta al comentario sobre el Manejo de la infección por el virus de la hepatitis C en la enfermedad renal crónica / Response to the comment made on Treatment of HCV infection in chronic kidney disease

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El gradiente de presión venoso hepático y la biopsia hepática transyugular en la evaluación de los pacientes con insuficiencia renal y hepatopatía crónica / Hepatic venous pressure gradient and transjugular liver biopsy to assess patients with kidney failure and chronic liver disease

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Manejo de la infección por el VHC en la enfermedad renal crónica / Management of HCV infection in chronic kidney disease

La prevalencia de la infección crónica por el virus de la hepatitis C (VHC) en pacientes con enfermedad renal crónica es mayor que en la población general. En hemodiálisis, se estima una prevalencia del 13%, con una amplia variabilidad geográfica y entre las unidades de un mismo país. La biopsia hepática es una herramienta útil para decidir el inicio de la terapia antiviral y excluir causas concomitantes de disfunción hepática, como la hepatopatía grasa no alcohólica, cuya incidencia está en auge, y la hemosiderosis, que pueden afectar a la progresión de la enfermedad y condicionar la respuesta al tratamiento antiviral; además, la vía transyugular se puede utilizar para medir el gradiente de presión venoso hepático y confirmar la existencia de hipertensión portal. La hepatitis crónica por el VHC ha demostrado reducir la supervivencia en hemodiálisis y en el trasplante renal, así como la supervivencia del injerto. Constituye la cuarta causa de mortalidad y la principal causa de disfunción hepática postrasplante renal. El VHC se comporta como un factor de riesgo independiente para la aparición de proteinuria, aumenta el riesgo de desarrollar diabetes, una glomerulonefritis de novo o una nefropatía crónica del injerto, de empeorar la enfermedad hepática y de provocar un mayor número de infecciones. También se ha descrito un incremento de la frecuencia de hepatitis colestásica fibrosante que, junto a la evolución acelerada a cirrosis, puede elevar significativamente la morbimortalidad y conllevar la necesidad de un trasplante (..) (AU)

The prevalence of chronic infection with the hepatitis C virus (HCV) in patients with chronic kidney disease is higher than in the general population. The estimated prevalence is 13% in haemodialysis, with wide variations geographically and between units in the same country. A liver biopsy is a useful tool for deciding whether to start antiviral therapy and to exclude concomitant causes of liver dysfunction. Examples of this include nonalcoholic fatty liver disease, whose incidence is on the rise, and haemosiderosis, which may affect the progression of the disease and determine the response to antiviral therapy. In addition, the transjugular approach can be used to measure the hepatic venous pressure gradient and confirm the existence of portal hypertension. Chronic hepatitis due to HCV has been shown to reduce survival in haemodialysis, renal transplantation and graft survival. It is the fourth leading cause of death and the leading cause of post-renal transplantation liver dysfunction. HCV behaves as an independent risk factor for the occurrence of proteinuria; it increases the risk of developing diabetes mellitus, de novo glomerulonephritis and chronic allograft nephropathy; it leads to a deterioration in liver disease and causes a greater number of infections. An increased frequency of fibrosing cholestatic hepatitis has also been described which, together with the rapid evolution to cirrhosis, can significantly increase morbidity (..) (AU)

Management of HCV infection in chronic kidney disease.

The prevalence of chronic infection with the hepatitis C virus (HCV) in patients with chronic kidney disease is higher than in the general population. The estimated prevalence is 13% in haemodialysis, with wide variations geographically and between units in the same country. A liver biopsy is a useful tool for deciding whether to start antiviral therapy and to exclude concomitant causes of liver dysfunction. Examples of this include non-alcoholic fatty liver disease, whose incidence is on the rise, and haemosiderosis, which may affect the progression of the disease and determine the response to antiviral therapy. In addition, the transjugular approach can be used to measure the hepatic venous pressure gradient and confirm the existence of portal hypertension. Chronic hepatitis due to HCV has been shown to reduce survival in haemodialysis, renal transplantation and graft survival. It is the fourth leading cause of death and the leading cause of post-renal transplantation liver dysfunction. HCV behaves as an independent risk factor for the occurrence of proteinuria; it increases the risk of developing diabetes mellitus, de novo glomerulonephritis and chronic allograft nephropathy; it leads to a deterioration in liver disease and causes a greater number of infections. An increased frequency of fibrosing cholestatic hepatitis has also been described which, together with the rapid evolution to cirrhosis, can significantly increase morbidity and mortality and lead to the need for liver transplantation. In addition, immunosuppression in renal transplantation predisposes a reactivation of HCV. However, as the pharmacokinetics of interferon and ribavirin is impaired in kidney failure and their use has adverse effects on function and graft survival, a combination therapy must be limited to non-transplanted individuals with an estimated glomerular filtration rate greater than 50ml/min, and with the interferon being used as monotherapy in dialysis. The fact that a quarter of HCV-positive patients evaluated for a renal transplant have bridging fibrosis or cirrhosis in the liver biopsy may renew renal pre-transplant treatment planning.

Aspectos clínicos y microbiológicos de la peritonitis fúngica en diálisis peritoneal / No disponible

La peritonitis es una de las complicaciones más graves dela diálisis peritoneal. Las bacterias son las responsables de la mayoría de los casos. La infección fúngica es infrecuente, pero se asocia con una alta morbilidad, con la imposibilidad de continuar en el programa de diálisis y con un importante índice de mortalidad. Su incidencia varía del 1% al 10% de los episodios de peritonitis en niños y del 1% al 23% en adultos. Su presentación clínicas similar a la de la peritonitis bacteriana. Los factores predisponentes de peritonitis fúngica no han sido establecidos con claridad; los episodios previos de peritonitis bacteriana y el tratamiento con antibióticos de amplio espectro han sido descritos a menudo en la literatura. Las especies de Cándida son los patógenos más habituales y Candida albicans la más frecuente, pero en la última década se ha observado una alta prevalencia de Candida parapsilosis. El diagnóstico microbiológico es fundamental para determinar la etiología y prescribir el tratamiento, que suele requerir, además de la terapia antifúngica, la retirada del catéter peritoneal y la consecuente transferencia a hemodiálisis. Fluconazol y anfotericina B son los antifúngicos recomendados; los nuevos fármacos como voriconazol y caspofungina han demostrado tener también una granutilidad. El propósito de esta revisión sistemática ha sido analizar los aspectos clínicos y microbiológicos de la peritonitis fúngica, los cuales son poco conocidos y han cambiado en los últimos años (AU)

Peritonitis is one of the most serious complications of peritoneal dialysis. Pathogenic bacteria cause the majority of cases of peritonitis. Fungal infection is rare but it is associated with high morbidity, the inability to continue on the dialysis program and a high mortality rate. Its incidence ranges from 4% to 10% of all peritonitis episodes in children and from 1% to 23% in adults. Its clinical presentation is similar to bacterial peritonitis. Until now, predisposing factors of fungal peritonitis have not been clearly established; the history of bacterial peritonitis episodes and treatment with broad-spectrum antibiotics have been often reported in literature. Candida species were the most common pathogens and Candida albicans was the most frequent, but high prevalence of Candida parapsilosis has been observed in the last decade. Microbiological findings are essential to determine the etiology of peritonitis. Successful management of fungal peritonitis requires antifungal therapy, the removal of the peritoneal catheter and the subsequent transfer to hemodialysis. Fluconazole and amphotericin B are recommended as antifungal agents. New drugs such as voriconazole and caspofungin are very effective. The aim of this systematic review has been to analyse the clinical and microbiological aspects of fungal peritonitis, as they are not well known and have changed in the last few years (AU)

Peritonitis fúngica en diálisis peritoneal continua ambulatoria: descripción de 10 casos / No disponible

Antecedentes: La peritonitis fúngica es una complicación infrecuente pero grave en pacientes en diálisis peritoneal continua ambulatoria (DPCA). Métodos: Durante un período de 10 años (1999-2008), de un total de 175 pacientes con insuficiencia renal crónica en tratamiento con DPCA, estudiamos retrospectivamente 10 casos de peritonitis fúngica, analizando los factores predisponentes, aspectos clínicos, agentes etiológicos y tratamiento. El diagnóstico se estableció por la presencia de efluente peritoneal turbio con recuento superior a 100 leucocitos/µl y aislamiento de hongos en el cultivo microbiológico. Resultados: La peritonitis fúngica representó un 3,6% del total de peritonitis. Nueve pacientes tenían historia de peritonitis bacteriana previa y todos habían recibido antibioterapia. Otros hallazgos destacables fueron: edad superior a70 años (50%) y diabetes mellitus (40%). El examen microscópico del líquido peritoneal fue de utilidad para sospechar la infección en 6 pacientes (60%). Los agentes responsables de peritonitis fueron: Candida parapsilosis (4), C. albicans(2), C. tropicalis(1), C. glabrata (1), C. famata (1) y Fusarium oxysporum(1). Los antifúngicos utilizados en el tratamiento fueron: fluconazol intraperitoneal y oral, vorizonazol intravenoso y oral y anfotericina B intravenosa. A consecuencia de la infección fúngica, 8 pacientes fueron transferidos a hemodiálisis. Un paciente murió antes de ser diagnosticado y otros tres durante el episodio de peritonitis. Conclusiones: Los pacientes con episodios de peritonitis bacteriana previos y tratamiento antibiótico presentaron un mayor riesgo de desarrollar peritonitis fúngica. C. parapsilosis fue el patógeno más frecuente. El tratamiento antifúngico junto con la retirada del catéter peritoneal fue eficaz en el 60% de los pacientes (AU)

Background: Fungal peritonitis is a rare but serious complication in patients undergoing continuous ambulatory peritoneal dialysis(CAPD). Methods: During a ten-year period (1999-2008), from a total of 175 patients with chronic renal failure undergoing CAPD, we retrospectively studied 10 cases of fungal peritonitis analyzing the predisposing factors, clinical aspects, etiological agents and treatment. Diagnosis was based on elevated CAPD effluent count(>100/µl) and isolation of fungi on culture. Results: Fungalperitonitis represented 3.6% of all peritonitis episodes. Nine patients had a history of previous bacterial peritonitis and all of them were under antibiotic therapy. Other common findings were: age higher than 70 years old (50%) and diabetes mellitus(40%). Direct microscopic examination of the peritoneal fluid was useful for the suspicion of fungal infection in six patients(60%). The responsible agents for peritonitis were: Candidaparapsilosis (4), C. albicans (2), C. tropicalis (1), C. glabrata (1), C.famata (1) and Fusarium oxysporum (1). Intraperitoneal and oralfluconazole, intravenous and oral voriconazole and intravenousamphotericin B were the antifungal agents used in the treatment. As a result of fungal infection, eight patients were transferred to hemodialysis. One patient died before the diagnosis and three other during the episode of peritonitis. Conclusions: Patients with previous bacterial peritonitis and antibiotic treatment were at greater risk of developing fungal peritonitis. C. parapsilosis was the most common pathogen. For the successful management of fungal peritonitis besides the antifungal therapy, peritoneal catheter removal was necessary in60% of patients (AU)

[Clinical and microbiological aspects of fungal peritonitis in peritoneal dialysis]. / Aspectos clínicos y microbiológicos de la peritonitis fúngica en diálisis peritoneal.

Peritonitis is one of the most serious complications of peritoneal dialysis. Pathogenic bacteria cause the majority of cases of peritonitis. Fungal infection is rare but it is associated with high morbidity, the inability to continue on the dialysis program and important mortality. Its incidence varies from 4% to 10% of all peritonitis episodes in children and from 1% to 23% in adults. Its clinical presentation is similar to bacterial peritonitis. Until now, predisposing factors of fungal peritonitis have not been clearly established; history of bacterial peritonitis episodes and treatment with broad-spectrum antibiotics have been often reported in the literature. Candida species were the most common pathogens and Candida albicans was the most frequent, but high prevalence of Candida parapsilosis has been observed in the last decade. Microbiological findings are essential to to determine the etiology of peritonitis. Successful management of fungal peritonitis requires antifungal therapy, the removal of peritoneal catheter and the subsequent transfer to hemodialysis. Fluconazole and amphotericin B are recommended as antifungal agents. New drugs as voriconazole and caspofungin are very effective. The aim of this systematic review has been to analyse the clinical and microbiological aspects of fungal peritonitis, as they are not well known and have changed in the last few years.

[Fungal peritonitis in ambulatory continuous peritoneal dialysis: description of 10 cases]. / Peritonitis fúngica en diálisis peritoneal continua ambulatoria: descripción de 10 casos.

BACKGROUND: Fungal peritonitis is a rare but serious complication in patients undergoing continuous ambulatory peritoneal dialysis (CAPD). METHODS: During a ten-year period (1999-2008), from a total of 175 patients with chronic renal failure undergoing CAPD, we retrospectively studied 10 cases of fungal peritonitis analyzing the predisposing factors, clinical aspects, etiological agents and treatment. Diagnosis was based on elevated CAPD effluent count (>100/microl) and isolation of fungi on culture. RESULTS: Fungal peritonitis represented 3.6% of all peritonitis episodes. Nine patients had a history of previous bacterial peritonitis and all of them were under antibiotic therapy. Other common findings were: age higher than 70 years old (50%) and diabetes mellitus (40%). Direct microscopic examination of the peritoneal fluid was useful for the suspicion of fungal infection in six patients (60%). The responsible agents for peritonitis were: Candida parapsilosis (4), Candida albicans (2), Candida tropicales (1), Candida glabrata (1), Candida famata (1) and Fusarium oxysporum (1). Intraperitoneal and oral fluconazole, intravenous and oral voriconazole and intravenous amphotericin B were the antifungal agents used in the treatment. As a result of fungal infection, eight patients were transferred to hemodialysis. One patient died before the diagnosis and three other during the episode of peritonitis. CONCLUSIONS: Patients with previous bacterial peritonitis and antibiotic treatment were at greater risk of developing fungal peritonitis. Candida parapsilosis was the most common pathogen. For the successful management of fungal peritonitis besides the antifungal therapy, peritoneal catheter removal was necessary in 60% of patients.

Amiloidosis AA enpaciente conhipernefroma sobreriñón en herradura / AA Amyloidosis due to renal cell carcinoma in a horseshoe kidney

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Pericarditis por Klebsiella Pneumoniae en paciente con lupus eritematoso sistémico e insuficiencia renal / Klebsiella pneumoniae pericarditis in a patient with systemic lupus erythematosus and renal failure

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