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3.
Nefrología (Madr.) ; 30(6): 687-697, nov.-dic. 2010. ilus, tab
Artigo em Espanhol | IBECS | ID: ibc-104637

RESUMO

Justificación: Se conoce como nefroesclerosis la enfermedad renal crónica (ERC) que complica la hipertensión arterial (HTA) esencial. La ausencia de correlación entre el control de la HTA y la progresión a ERC terminal sugiere la existencia de una enfermedad intrínseca y primitiva. Recientemente se ha asociado con polimorfismos del gen MYH9 en individuos afroamericanos. El objetivo del trabajo que presentamos es determinar si algún polimorfismo de dicho gen se relaciona en raza caucásica con la asociación de HTA esencial y nefroesclerosis y, además, conocer los marcadores de progresión a ERC terminal. Será un estudio retrospectivo que comparará a pacientes con nefroesclerosis frente a pacientes con HTA esencial sin enfermedad renal y, además, se incluirán pacientes con nefroesclerosis y progresión de la enfermedad renal frente a los que se mantienen estables. Métodos: Entre octubre de 2009 y octubre de 2010 se incluirán 500 pacientes con ERC (estadios 3-5) atribuida a nefroesclerosis según criterios clínicos habituales, y 300 pacientes afectados de HTA esencial (FGe >60ml/min/1,73 m2; microalbuminuria <300 mg/g). Para el estudio genético también se incluirán 200 controles sanos de población general. Habrá dos cortes del estudio, la primera visita en el hospital y la visita final (en estadio 5 el inicio del tratamiento sustitutivo constituirá el final del seguimiento). Se registrarán datos clínicos y analíticos, y se recogerán muestras de sangre para el estudio genético. Discusión: Nuestro estudio, con la doble vertiente genética y clínica, tratará de determinar si en la raza caucásica existe relación entre el diagnóstico de nefroesclerosis y el gen MYH9, y estudiará, además, los posibles marcadores de progresión (AU)


Background: Hypertensive nephrosclerosis is a chronic kidney disease (CKD) associated to essential hypertension. The lack of correlation between strict control of hypertension and progression of CKD suggests an intrinsic and primary disease. New evidence suggests that MYH9 gene alterations are associated with nephrosclerosis in African Americans. The aim of this study is to investigate whether a polymorphism of MYH9 in Caucasians is linked to the association of essential hypertension and nephrosclerosis. The secondary objective is to identify the clinical risk factors of progression to end-stage renal disease (ESRD). This is a retrospective study that will compare patients with nephrosclerosis versus essential hypertensives without renal disease, and also patients with nephrosclerosis and impaired rena l function versu s those that are stable .Methods: Between October 2009 and October 2010, 500patients stages 3-5 CKD attributed to nephrosclerosis according to usual clinical criteria, and 300 essential hypertensives (eGFR > 60 mL/min/1.73m2; mi c roalbuminur ia<300 mg/g) will be recruited. 200 healthy controls from general population will also be included for the genetic study. There will be two sections of the study, first and final visit to the clinic (stage 5, the start of replacement therapy will be the end of follow-up). Clinical and laboratory data will be recorded, and blood samples will be collected. Discussion: Our study will seek to determine if there exists a relationship between the diagnosis of nephrosclerosis and MYH9 gene in the Caucasian race, and to study possible risk factors for progression to ESRD, on both clinical and genetic basis (AU)


Assuntos
Humanos , Nefroesclerose/genética , Hipertensão/genética , Insuficiência Renal Crônica/fisiopatologia , Estudos de Associação Genética , Proteinúria/epidemiologia , Progressão da Doença
4.
Nefrologia ; 30(6): 687-97, 2010.
Artigo em Espanhol | MEDLINE | ID: mdl-21113220

RESUMO

BACKGROUND: Hypertensive nephrosclerosis is a chronic kidney disease (CKD) associated with essential hypertension. The lack of correlation between hypertension control and progression to end-stage CKD suggests an intrinsic and primitive disease. New evidence suggests that MYH9 gene alterations are associated with polymorphisms in African Americans. The aim of this study is to investigate whether a polymorphism of MYH9 in Caucasians is linked to essential hypertension and nephrosclerosis. The secondary objective is to identify the clinical risk factors of progression to end-stage CKD. This is a retrospective study that will compare patients with nephrosclerosis and essential hypertensives without renal disease, and also patients with nephrosclerosis and impaired renal function with those that are stable. METHOD: Between October 2009 and October 2010, 500 patients with stages 3-5 CKD attributed to nephrosclerosis according to usual clinical criteria, and 300 essential hypertensives (eGFR>60 mL/min/1.73 m2; microalbuminuria <300 mg/g) are to be recruited. A total of 200 healthy controls from the general population are also to be included for the genetic study. There are two study sections, being the first and final visits to the clinic (for stage 5 cases, the start of replacement therapy will be the end of follow-up). Clinical and laboratory data will be recorded, and blood samples will be collected. DISCUSSION: Our study will aim to determine if there is a relationship between the diagnosis of nephrosclerosis and the MYH9 gene in Caucasians, and to study possible risk factors for progression to end-stage CKD, on both clinical and genetic bases.


Assuntos
Hipertensão/genética , Proteínas Motores Moleculares/genética , Estudos Multicêntricos como Assunto/métodos , Cadeias Pesadas de Miosina/genética , Nefroesclerose/genética , Adulto , Idoso , Comorbidade , Progressão da Doença , Feminino , Predisposição Genética para Doença , Humanos , Hipertensão/complicações , Hipertensão/epidemiologia , Hipertensão/etnologia , Falência Renal Crônica/epidemiologia , Falência Renal Crônica/etiologia , Masculino , Pessoa de Meia-Idade , Estudos Multicêntricos como Assunto/economia , Nefroesclerose/epidemiologia , Nefroesclerose/etnologia , Nefroesclerose/etiologia , Apoio à Pesquisa como Assunto , Estudos Retrospectivos , Fatores de Risco , Espanha/epidemiologia , População Branca/genética
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