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Deficiencia de cistationina beta-sintasa
Es un trastorno hereditario que afecta el metabolismo del aminoácido metionina.
La homocistinuria se hereda en familias como un rasgo autosómico recesivo, lo cual significa que el niño debe heredar el gen defectuoso de ambos padres para que resulte afectado seriamente.
La homocistinuria tiene varios rasgos comunes con el síndrome de Marfan. A diferencia del síndrome de Marfan, en el cual las articulaciones tienden a estar "flojas o sueltas", en la homocistinuria tienden a estar "rígidas".
Rezvani I. Defects in metabolism of amino acids. In: Kliegman RM, Behrman RE, Jenson HB, Stanton BF. Nelson Textbook of Pediatrics. 18th ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 85.
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