ABSTRACT
The incidence of rare diseases is expected to be comparatively higher in the Middle East and North Africa (MENA) region than in other parts of the world, attributed to the high prevalence of consanguinity. Most MENA countries share social and economic statuses, cultural relativism, religious beliefs, and healthcare policies. Polycystic kidney diseases (PKDs) are the most common genetic causes of kidney failure, accounting for nearly 8.0% of dialysis cases. The development of PKDs is linked to variants in several genes, including PKD1, PKD2, PKHD1, DZIP1L, and CYS1. Autosomal recessive PKD (ARPKD) is the less common yet aggressive form of PKD. ARPKD has an estimated incidence between 1:10,000 and 1:40,000. Most patients with ARPKD require kidney replacement therapy earlier than patients with autosomal dominant polycystic kidney disease (ADPKD), often in their early years of life. This review gathered data from published research studies and reviews of ARPKD, highlighting the epidemiology, phenotypic presentation, investigations, genetic analysis, outcomes, and management. Although limited data are available, the published literature suggests that the incidence of ARPKD may be higher in the MENA region due to consanguineous marriages. Patients with ARPKD from the MENA region usually present at a later disease stage and have a relatively short time to progress to kidney failure. Limited data are available regarding the management practice in the region, which warrants further investigations.
Subject(s)
Polycystic Kidney, Autosomal Recessive , Humans , Polycystic Kidney, Autosomal Recessive/genetics , Polycystic Kidney, Autosomal Recessive/epidemiology , Polycystic Kidney, Autosomal Recessive/therapy , Polycystic Kidney, Autosomal Recessive/diagnosis , Middle East/epidemiology , Africa, Northern/epidemiology , Incidence , Child , Consanguinity , PrevalenceABSTRACT
Introducción: Las malformaciones congénitas, como defectos estructurales primarios de un órgano, parte de él o de zonas más extensas del organismo, resultan de una alteración inherente en el desarrollo, que se hace evidente al examen físico del feto y del recién nacido, antes o posterior al nacimiento, cuando se hace patente el defecto funcional de un órgano interno afectado anatómicamente. Objetivo: Caracterizar las malformaciones congénitas renales fetales diagnosticadas por ultrasonografía bidimensional, atendidas durante 2015 y 2016. Métodos: Se realizó un estudio descriptivo, longitudinal y prospectivo en el Centro Provincial de Genética Médica de Santiago de Cuba. Se seleccionó la muestra por el método aleatorio simple para un total de 59 gestantes (34 de 2015 y 25 de 2016), a las que se les diagnosticó algún tipo de malformación congénita renal embriofetal. Resultados: La malformación congénita renal que predominó fue la hidronefrosis, seguida de riñón poliquístico. En los hallazgos morfológicos por ecosonografía predominaron las afecciones del parénquima renal. El sexo fetal de mayor incidencia fue el masculino. La edad gestacional donde incidieron las afecciones renales en gestantes fue de 25 y más semanas, con edad materna entre 20 y 35 años, sin reportar factores genéticos. Los factores de riesgo externos de origen materno que más incidieron fueron la hipertensión arterial, el hábito de fumar y la diabetes. Conclusiones: Se mostraron los principales hallazgos morfológicos ultrasonográficos de los diferentes tipos de malformaciones congénitas renales encontradas, así como se identificaron los diferentes factores de riesgo presentes en las embarazadas. Se observó un predominio de las gestantes a temprana edad con hidronefrosis como el tipo de malformación congénita más frecuente(AU)
Introduction: Congenital malformations, as primary structural defects of an organ, part of it or larger areas of the organism, result from an inherent alteration in development, which is evident from the physical examination of the fetus and the newborn, before or after birth, when the functional defect of an anatomically affected internal organ becomes apparent. Objective: To characterize fetal renal congenital malformations diagnosed by two-dimensional ultrasonography during 2015 and 2016. Methods: A descriptive, longitudinal and prospective study was conducted at the Provincial Center of Medical Genetics in Santiago de Cuba. The sample was selected by simple random method for a total of 59 pregnant women (34 from 2015 and 25 from 2016). They were diagnosed with some type of embryo-fetal renal congenital malformation. Results: The congenital renal malformation that predominated was hydronephrosis, followed by polycystic kidney. In the morphological findings by echocardiography, renal parenchymal conditions predominated. Male fetal sex had the highest incidence. The gestational age where renal conditions affected pregnant women was 25 weeks and more, with maternal age ranging 20 and 35 years, without reporting genetic factors. Smoking and diabetes were the external risk factors of maternal origin that most affected high blood pressure. Conclusions: The main ultrasonographic morphological findings of the different types of congenital renal malformations found were shown, as well as the different risk factors present in pregnant women. A predominance of pregnant women at early age with hydronephrosis was observed as the most common type of congenital malformation(AU)
Subject(s)
Polycystic Kidney, Autosomal Recessive/epidemiology , Hydronephrosis/epidemiology , Kidney/abnormalities , Epidemiology, Descriptive , Prospective Studies , Ultrasonography, Doppler, Duplex/methodsABSTRACT
INTRODUÇÃO: A Doença Renal Policística Autossômica Recessiva (DRPAR) é uma causa importante de morbidade e mortalidade pediátricas, com um espectro variável de manifestações clínicas. MÉTODOS: A apresentação e evolução clínica de 25 pacientes (Pts) foram analisadas através da revisão de prontuários, aplicando-se os formulários propostos por Guay-Woodford et al. As morbidades associadas à doença foram avaliadas quanto à frequência e à idade de manifestação. RESULTADOS: A idade média de diagnóstico foi de 61,45 meses (0 a 336,5 meses), com distribuição similar entre os sexos (52 por cento dos pts do sexo feminino). Houve histórico familiar da doença em 20 por cento dos casos (5/25), com dois casos de consanguinidade. Na análise inicial, diagnosticou-se hipertensão arterial (HAS) em 56 por cento dos Pts (14/25); doença renal crônica estágio > 2 (DRC > 2) em 24 por cento (6/25); infecções do trato urinário (ITU) em 40 por cento (10/25) e hipertensão portal (HP) em 32 por cento dos casos (8/25). Das ultrassonografias abdominais iniciais, 80 por cento demonstraram rins ecogênicos com cistos grosseiros e 64 por cento detectaram fígado e vias biliares normais. Inibidores da ECA foram utilizados em 36 por cento dos Pts, betabloqueadores em 20 por cento, bloqueadores de canais de cálcio em 28 por cento e diuréticos em 36 por cento dos casos. Na análise final, após um tempo de acompanhamento médio de 152,2 meses (29,8 a 274,9 meses), HAS foi diagnosticada em 76 por cento dos Pts, DRC > 2 em 44 por cento, ITU em 52 por cento e HP em 68 por cento. CONCLUSÃO: As altas morbidade e mortalidade associadas à DRPAR justificam a construção de um banco de dados internacional, visando ao estabelecimento de um tratamento de suporte precoce.
INTRODUCTION: Autosomal Recessive Polycystic Kidney Disease (ARPKD) is an important pediatric cause of morbidity and mortality, with a variable clinical spectrum. METHODS: The clinical presentation and evolution of 25 patients (Pts) were analyzed by clinical record review, according to the forms proposed by Guay-Woodford et al. Morbidities associated with the disease were evaluated with respect to their frequencies and age of onset. RESULTS: The median age at the diagnosis was 61.45 months (0 to 336.5 months), with similar gender distribution (52 percent of the patients were female). A family ARPKD history was found in 20 percent of the cases (5/25), two of them associated with consanguinity. On arrival, arterial hypertension (SAH) was diagnosed in 56 percent of the Pts (14/25); chronic kidney disease stage > 2 (CKD > 2) in 24 percent (6/25); urinary tract infection (UTI) in 40 percent (10/25); and portal hypertension (PH) in 32 percent of the cases (8/25). Eighty percent of the initial abdominal ultrasonograms detected echogenic kidneys with gross cysts and 64 percent demonstrated normal liver and biliary ducts. ACE inhibitors were used in 36 percent of the analyzed patients, beta-blockers in 20 percent, calcium channel blockers in 28 percent, and diuretics in 36 percent of them. In the final evaluation, after an average follow-up time of 152.2 months (29.8 to 274.9 months), SAH was detected in 76 percent of the cases, CKD > 2 in 44 percent, UTI in 52 percent and PH in 68 percent. CONCLUSION: The high morbidity and mortality associated with ARPKD justify the assembly of an international database, with the aim of establishing an early therapeutic support.
Subject(s)
Humans , Male , Female , Infant, Newborn , Pathology , Polycystic Kidney, Autosomal Recessive/diagnosis , Polycystic Kidney, Autosomal Recessive/epidemiologyABSTRACT
Los quistes renales son dilataciones anormales de túbulos, conductos o glomérulos, o estructuras similares a divertículos posiblemente en continuidad con el nefrón. La enfermedad quística renal puede comprometer ambos riñones en forma difusa como en el riñón poliquístico o enfermedad autosómica dominante, o un área particular de ambos riñones como los riñones en esponja, o sólo un riñón o parte de él como en el riñón multiquístico. También hay un tumor quístico que puede reemplazar el parénquima renal normal como es el quiste multilocular. Finalmente el quiste simple puede ocurrir solo o junto a más quistes en cualquier lugar del riñón. La clasificación de los quistes con el propósito de simplificar conceptos no provee nacesariamente un marco práctico y clínico para tan diversos procesos patológicos. El advenimiento de la ecografía, la resonancia nuclear magnética y la tomografía computarizada ha mejorado drásticamente la habilidad del clínico para diagnosticar y diferenciar la variedad de enfermedad renal quística. Sin embargo, la importancia de una cuidadosa historia familiar es enfatizada por la clasificación de esa patología en categorías genéticas.