ABSTRACT
RESUMEN Objetivo: Las porfirias son trastornos que resultan de un defecto enzimático específico en la vía bioquímica de las porfirias. Los síntomas clínicos incluyen dolor abdominal, alteraciones gastrointestinales y manifestaciones psiquiátricas. Material y métodos: Mujer de 41 años, con diabetes gestacional y parto por cesárea hace 7 días, que acude a urgencias con convulsiones tónicoclónicas. En tratamiento antibiótico por infección de la herida quirúrgica. Los exámenes de laboratorio demostraron hiponatremia, hipokalemia y anemia. El diagnóstico de porfiria aguda intermitente (PAI) fue confirmado por el hallazgo de porfirinas elevadas en orina. La paciente fue dada de alta después de dos semanas. Resultados: se solicita un test rápido de PBG cuantitativo en orina, que resulta positivo (>10 mg PBG / g creatinina), por lo que se solicita un estudio completo de la enfermedad y se envían muestras a un hospital de referencia para análisis bioquímico y genético de PBGD/HMBS (Hidroximetilbilano sintetasa /PBG-desaminasa). Presenta la mutación c.815_818 del AGGA, que se trasmite de forma autosómica dominante, aunque con baja penetrancia. Conclusión: El diagnóstico de PAI es complejo debido al amplio espectro de síntomas, además el embarazo y el puerperio puede exacerbar la enfermedad.
SUMMARY Objective: Porphyrias are a heterogeneous group of either inherited or acquired disorders of the enzymatic biosynthesis of porphyrins. In these diseases, specific abnormalities of enzymes cause diverse clinical manifestations including abdominal pain, gastrointestinal alterations and psychiatric manifestations. Materials and methods: A 41-year-old woman with gestational diabetes and cesarean delivery 7 days ago with intradural anesthesia. She was admitted with tonic clonic seizures and diffuse abdominal pain. She is under antibiotic treatment for infection of the surgical wound. Laboratory exams showed hyponatremia, hypokalemia and anemia. A diagnosis of acute intermittent porphyria was confirmed with elevated porphyrinis in urine. Results: a rapid test of quantitative PBG in urine is permormed, which is positive (>10 mg PBG / g creatinin), so a complete study of the disease is requested and samples are sent to a reference hospital for biochemical and genetic analysis of PBGD / HMBS (Hydroxymethylbilane synthetase / PBG-deaminase). It presents the c.815_818 mutation of the AGGA, which is transmitted in an autosomal dominant manner, although with low penetrance. Conclusion: The diagnosis of acute intermittent porphyria is complex because of the wide spectrum of symptoms. Pregnancy or the puerperium might exacerbate the disease
Subject(s)
Humans , Female , Pregnancy , Adult , Pregnancy Complications/diagnosis , Porphyria, Acute Intermittent/diagnosis , Porphyrias/urine , Seizures/etiology , Porphyria, Acute Intermittent/complications , Porphyria, Acute Intermittent/urine , Porphyria, Acute Intermittent/therapy , Postpartum PeriodABSTRACT
Esta presentación de caso, expone una intervención de Constructos Personales centrada en dilemas implicativos en una adolescente de 16 años de la ciudad de Medellín diagnosticada con Porfiria Aguda Intermitente de acuerdo con la Clasificación Internacional de Enfermedades (CIE 10) y con Trastorno De Ansiedad Generalizada (TAG) acorde a los criterios del Manual Diagnóstico y Estadístico de los Trastornos Mentales, quinta edición (DSM 5). El proceso terapéutico se desarrolló en deciseís sesiones, teniendo como punto de referencia los parámetros propuestos por Senra, Feixas y Fernandes (2005), quienes plantean un protocolo general para el abordaje de estructuras dilemáticas, igualmente se consideró la elaboración posterior de Feixas y Compañ (2015) para el diseño del proceso terapéutico. Se definieron los dilemas implicativos a partir de la entrevista, la técnica de rejilla y la autocaracterización (Kelly, 1955). Durante la psicoterapia se abordaron dos de las configuraciones dilemáticas, las cuales se relacionaban con competencia personal e interacción social. En la etapa de finalización del tratamiento se evidenciaron cambios significativos a nivel del sistema de construcciones personales tales como el aumento de la autoestima, mayor percepción de cercanía con las personas significativas, así como una mayor adecuación de éstos a sus construcciones valoradas, transformaciones cuantificadas gracias a la Técnica de Rejilla de Kelly. Igualmente, a nivel sintomático se lograron cambios notables, partiendo de la comparación de las mediciones pre-post tratamiento obtenidas con el inventario de ansiedad y depresión de Beck (BAI, BDI II). Estos resultados aportan evidencia a la Psicología de Constructos Personales, confirmando hallazgos anteriormente expuestos en la literatura científica.
This case presentation exposes an intervention of personal constructs, focused on implicative dilemmas in a 16-year-old girl from Medellin diagnosed with intermittent acute porphyria (AIP) according to the International Classification of Diseases (ICD 10) and with disorder of generalized anxiety (DGA) according to the criteria of the Diagnostic and Statistical Manual of Mental Disorders, fifth edition (DSM 5). The therapeutic process was developed in sixteen sessions, having as reference the parameters proposed by Senra, Feixas, and Fernandes (2005), who propose a general protocol for the approach of dilemmatic structures, the subsequent elaboration of Feixas and Compañ was also considered (2015) for the design of the therapeutic process. The implicative dilemmas were defined from the interview, the grid technique and the self-characterization (Kelly, 1955). During psychotherapy, two of the dilemmatic configurations were addressed, which related to personal competence and social interaction. In the stage of completion of the treatment, significant changes were evidenced at the level of the personal construction system such as the increase of self-esteem, greater perception of closeness with significant people, as well as, a greater adaptation of these to their value constructions; quantified transformations thanks to Kelly's Grid Technique. Similarly, significant changes were achieved at the symptomatic level, based on the comparison of pre-post treatment measurements obtained with Beck's anxiety and depression inventory (BAI, BDI II). These results provide evidence to the psychology of personal constructs, which confirms findings previously exposed in the scientific literature.
Subject(s)
Humans , Anxiety Disorders/therapy , Porphyrias/therapy , Psychotherapy/methods , Personal Construct TheoryABSTRACT
ABSTRACT Hemoglobin is an essential biological component of human physiology and its production in red blood cells relies upon proper biosynthesis of heme and globin protein. Disruption in the synthesis of these precursors accounts for a number of human blood disorders found in patients. Mutations in genes encoding heme biosynthesis enzymes are associated with a broad class of metabolic disorders called porphyrias. In particular, one subtype - erythropoietic protoporphyria - is caused by the accumulation of protoporphyrin IX. Erythropoietic protoporphyria patients suffer from photosensitivity and a higher risk of liver failure, which is the principle cause of morbidity and mortality. Approximately 90% of these patients carry loss-of-function mutations in the enzyme ferrochelatase (FECH), while 5% of cases are associated with activating mutations in the C-terminus of ALAS2. Recent work has begun to uncover novel mechanisms of heme regulation that may account for the remaining 5% of cases with previously unknown genetic basis. One erythropoietic protoporphyria family has been identified with inherited mutations in the AAA+ protease ClpXP that regulates ALAS activity. In this review article, recent findings on the role of ClpXP as both an activating unfoldase and degrading protease and its impact on heme synthesis will be discussed. This review will also highlight the role of ClpX dysfunction in erythropoietic protoporphyria.
Subject(s)
Porphyrias , Protoporphyria, Erythropoietic , Endopeptidase Clp , EnzymesABSTRACT
Resumen La porfiria intermitente aguda (PIA) es una enfermedad poco frecuente, considerada huérfana, que se caracteriza por crisis neuroviscerales, el dolor abdominal siendo su síntoma más común, acompañado en muchos casos, de síntomas inespecíficos, haciendo difícil su diagnóstico temprano. El retraso en el diagnóstico y tratamiento de esta entidad puede resultar catastrófico o incluso fatal, provocando daño neurológico a largo plazo o permanente. Reportamos el caso de un adulto joven que consulta en varias ocasiones por dolor abdominal inespecífico y 24 horas después de la admisión desarrolla inestabilidad autonómica simpática con cifras tensionales elevadas y taquicardia. Posteriormente debilidad muscular que evoluciona hasta cuadriplejia e hiponatremia con criterios para secreción inadecuada de hormona antidiurética (SIADH). Estos datos, junto con coloración rojiza en orina, llevan al diagnóstico de porfiria. Presentamos las características clínicas y bioquímicas enfatizando la importancia de incluir la porfiria dentro de los diagnósticos diferenciales de dolor abdominal y disautonomia de causa indeterminada. (Acta Med Colomb 2017; 42: 140-143).
Abstract Acute intermittent porphyria (AIP) is an infrequent and considered orphan disease, characterized by neurovisceral crisis, being abdominal pain the most common symptom, accompanied in many cases by non-specific symptoms, making early diagnosis difficult. The delay in the diagnosis and treatment of this entity can be catastrophic or even fatal, causing long-term or permanent neurological damage. The case of a young adult who attends medical consultation several times for non-specific abdominal pain and 24 hours after admission develops sympathetic autonomic instability with elevated blood pressure and tachycardia is presented. He subsequently presents muscular weakness that evolves to quadriplegia and hyponatremia with criteria for inadequate secretion of antidiuretic hormone (SIADH). These data together with reddish urine staining lead to the diagnosis of porphyria. The clinical and biochemical characteristics emphasizing the importance of including porphyria within the differential diagnoses of abdominal pain and dysautonomia of indeterminate cause are presented. (Acta Med Colomb 2017; 42: 140-143).
Subject(s)
Humans , Male , Adult , Porphyrias , Quadriplegia , Porphyria, Acute Intermittent , Primary Dysautonomias , Inappropriate ADH SyndromeABSTRACT
Las porfirias constituyen un grupo de ocho enfermedades de baja prevalencia, causadas por defectos enzimáticos en la vía metabólica de la síntesis del grupo hem. Una de sus formas es la porfiria intermitente aguda; afecta a 1,5/100.000 personas año y se presenta con dolor abdominal, taquicardia, parestesias, constipación y vómito. La neuropatía porfírica es en esencia motora, simétrica y suele ser proximal. Se presenta el caso de una paciente de sexo femenino con neuropatía periférica, dolor abdominal y elevación de las transaminasas, en quien se documentó porfiria intermitente aguda. Después de instaurado el manejo, los síntomas se resolvieron...(AU)
Porphyrias are a group of eight low prevalence disorders of heme metabolism, each characterized by a defect in an enzyme required for the synthesis of heme. Acute intermittent porphyria, affecting 1.5 per 100.000 people per year manifesting with abdominal pain, tachycardia, paresthesia, constipation and vomiting, is one type of porphyria. Porphyric neuropathy is fundamentally motor, symmetrical and often has a proximal predilection. A case is presented in a female patient in whom acute intermittent porphyria was documented. Her symptoms included peripheral neuropathy, abdominal pain and elevation of transaminases. Her symptoms resolved after receiving treatment...(AU)
Subject(s)
Humans , Female , Adult , Paraneoplastic Polyneuropathy , Porphyrias , Porphyria, Acute IntermittentABSTRACT
Las porfirias son enfermedades metabólicas consecuencia de fallas en la biosíntesis del hemo, caracterizadas por un patrón específico de acumulación y excreción de intermediarios, responsables de su patofisiología. En las porfirias agudas el exceso de ácido d-aminolevúlico (ALA) produce una sintomatología neuroabdominal asociada al daño oxidativo por formación de especies reactivas de oxígeno (ROS), originadas por autooxidaxión del ALA. En las cutáneas, la sintomatología es producto de la acumulación de porfirinas, que como el ALA, inducen la formación de ROS. Su desencadenamiento se precipita por factores endógenos (ayuno, estrés, hormonas) y/o exógenos (fármacos), en particular algunos anestésicos. Se presenta una revisión de los estudios bioquímicos y genéticos en pacientes con diferentes porfirias obtenidos en el Centro de Investigaciones de Porfirias y Porfirinas (CIPYP), durante los últimos 38 años, que permitieron ampliar el conocimiento sobre las bases moleculares sobre estas patologías. Se describen los logros resultantes del empleo de modelos experimentales de porfiria, inducida farmacológica o genéticamente, que contribuyeron a la clasificación de algunas drogas como prohibidas para pacientes con porfiria. Finalmente, las porfirinas generadoras de ROS, y por ende inductoras de muerte celular, tienen su aplicación para combatir infecciones por organismos hemo-deficientes como Trypanosoma cruzi y también para ser utilizadas como fotosensibilizadores en la terapia fotodinámica (TFD).
Porphyrias comprise a group of metabolic disorders of the heme biosynthesis pathway resulting in a specific accumulation and excretion of intermediates which are responsible for their pathophysiology. Acute porphyrias are characterized by acute neurovisceral symptoms due to the overproduction and accumulation of d-aminolevulinic acid (ALA) which leads to an oxidative damage resulting from the formation of reactive oxygen species (ROS). In cutaneous porphyrias, the symptomatology is a result of porphyrin accumulation which also induces ROS moulding. In both cases, their clinical signs are precipitated by endogenous factors (stress, hormones, low calories intake) and/or exogenous drugs, in particular some anaesthetics. A review of the biochemical and genetic results obtained from patients with different porphyrias, diagnosed at the CIPYP during the last 38 years is presented here, aimed at obtaining additional evidence about the molecular nature of these disorders. The achievements obtained from experimental porphyria models -pharmacologically or genetically induced- are also described, which contributed to the classification of some drugs as prohibited for their use in porphyric patients. Finally, as porphyrins produce ROS and therefore cellular death, they can be used to treat infections by heme-deficient organisms like Trypanosoma cruzi and also as photosensitizers in photodynamic therapy (TFD).
As Porfirias são doenças metabólicas decorrentes de falhas na biossíntese do Hemo, caracterizadas por um padrão específico de acumulação e excreção de intermediários responsáveis de sua patofisiologia. Nas Porfirias Agudas, o excesso de ácido δ-aminolevulínico (ALA) produz uma sintomatologia neuroabdominal associada ao dano oxidativo por formação de espécies reativas de oxigênio (ROS), decorrentes da auto-oxidação do ALA. Nas Cutâneas a sintomatologia é produto da acumulação de porfirinas, que como o ALA, induzem a formação de ROS. Seu desencadeamento precipita-se por fatores endógenos (jejum, estresse, hormônios) e/ou exógenos (fármacos), especialmente alguns anestésicos. Apresenta-se uma revisão dos estudos bioquímicos e genéticos em pacientes com diferentes Porfirias obtidos no Centro de Investigações de Porfirias e Porfirinas (CIPYP), durante os últimos 38 anos, que permitiram ampliar o conhecimento sobre as bases moleculares destas patologias. Descrevem-se as conquistas resultantes do uso de modelos experimentais de Porfiria, induzida farmacológica ou geneticamente, que contribuíram à classificação de algumas drogas como proibidas para pacientes com Porfiria. Afinal, as porfirinas geradoras de ROS e, por conseguinte, indutoras de morte celular têm sua aplicação para combater infecções por organismos hemo-deficientes como Trypanosoma cruzi e também ser utilizadas como fotossensibilizadores na terapia fotodinâmica (TFD).
Subject(s)
Humans , Anesthetics , Photochemotherapy , Porphyrias , Porphyrias/metabolism , Porphyrins , Trypanosoma cruzi , Porphyria, Erythropoietic , Protoporphyria, ErythropoieticABSTRACT
No abstract available.
Subject(s)
Humans , Kidney Failure, Chronic , Porphyria Cutanea Tarda , Porphyrias , Renal DialysisABSTRACT
Pediatric diseases are important because diagnosis and care for these can be complex. Among them, specific diseases have been associated with ocular involvement. This review presents the ocular manifestations of various pediatric diseases relevant to the clinician. An array of ocular manifestations of hyperthyroidism, hypoparathyroidism, diabetes mellitus, porphyria, cystinosis, mucopolysaccharidosis, Wilson disease, juvenile idiopathic arthritis, systemic lupus erythematosus, Marfan syndrome, Weill-Marchesani syndrome are described. In this review we will review ocular manifestations of systemic pediatric diseases for comprehensive understanding of eye involvement. With this review, authors can recognize the ocular manifestations for diagnosis and management of pediatric systemic diseases.
Subject(s)
Arthritis, Juvenile , Cystinosis , Diabetes Mellitus , Diagnosis , Hepatolenticular Degeneration , Hyperthyroidism , Hypoparathyroidism , Lupus Erythematosus, Systemic , Marfan Syndrome , Mucopolysaccharidoses , Pediatrics , Porphyrias , Weill-Marchesani SyndromeABSTRACT
El Consejo Federal de Medicina de Brasil (CFM) -órgano normativo y fiscalizador del ejercicio ético de la medicina- prohibió, en 2008, la participación de médicos brasileños en investigaciones que utilizaran placebo para enfermedades con tratamiento eficaz y efectivo, en contraposición a la Declaración de Helsinki, que permite su uso en condiciones metodológicamente justificadas. Con el objetivo de verificar si la normativa ética del CFM modificó el uso de placebo en ensayos clínicos de fase III en Brasil, se analizaron varias características de sus registros en el ClinicalTrials.gov, en los períodos de 2003 a 2007 y de 2009 a 2013. Se concluye que: a) la normativa promulgada por el CFM en 2008 fue ineficaz y prevaleció la posición adoptada por la Declaración de Helsinki; b) el patrocinio de ensayos con placebo por parte de la industria farmacéutica multinacional fue significativo; c) predominaron las investigaciones de fármacos para enfermedades crónicas, y fueron poco significativas para las enfermedades postergadas, de importancia para Brasil.
In 2008, Brazil's Federal Council of Medicine [Conselho Federal de Medicina] (CFM) - regulatory and supervisory agency on the ethical practice of medicine - banned the participation of Brazilian doctors in studies using placebos for diseases with efficient and effective treatment. This position differs with the Helsinki Declaration, which allows the use of placebos in methodologically justified conditions. To ascertain whether the CMF's ethical regulation modified the use of placebos in phase III clinical trials in Brazil, characteristics of the records in ClinicalTrials.gov were researched in the periods from 2003 to 2007 and from 2009 to 2013. The conclusions reached were: a) the regulations issued by the CFM in 2008 were ineffective and the position adopted by the Helsinki Declaration prevails; b) there was significant sponsorship by the multinational pharmaceutical industry of trials with placebos; c) the research was predominantly on new drugs for chronic diseases, with little study done of the neglected diseases which are of great importance to Brazil.