Subashri Mohanasundaram, Prasad N D Srinivasa, Fernando Edwin, Raj Yashwanth T
Department of Nephrology, Government Stanley Medical College, Chennai, Tamil Nadu, India.
Indian J Nephrol. 2021 Jan-Feb;31(1):67-70. doi: 10.4103/ijn.IJN_192_19. Epub 2021 Jan 27.
Acute porphyrias are metabolic disorders resulting from deficiency of a specific enzyme involved in heme biosynthetic pathway. These deficiencies also affect normal renal physiology, as kidneys are also involved in heme synthesis. Sometimes, this could even lead to end stage renal disease. Acute Intermittent Porphyria, an autosomal dominant disorder arising from half-normal activity of hydroxymethylbilane synthase, is characterized by occurrence of vague neurovisceral attacks (abdominal pain, nausea, vomiting, constipation and neuropsychiatric symptoms), with urinary excretion of porphyrin precursors, such as 5-Amino-levulinic acid (ALA) and Porphobilinogen (PBG). Acute attacks are triggered by dehydration, diarrhea, steroids, low calorie diets. Treatment includes avoidance of precipitating factors, adequate hydration, high carbohydrate diet and heme replacement. Here, we present an adolescent female who had presented with recurrent abdominal pain, dyselectrolyemia with associated seizures, was diagnosed with Acute Intermittent Porphyria and recovered well with symptomatic management.
急性卟啉病是由于血红素生物合成途径中特定酶缺乏引起的代谢紊乱。这些酶缺乏也会影响正常的肾脏生理功能,因为肾脏也参与血红素合成。有时,这甚至可能导致终末期肾病。急性间歇性卟啉病是一种常染色体显性疾病,由羟甲基胆色素原合酶活性减半引起,其特征是出现模糊的神经内脏发作(腹痛、恶心、呕吐、便秘和神经精神症状),同时尿中排泄卟啉前体,如5-氨基酮戊酸(ALA)和胆色素原(PBG)。急性发作由脱水、腹泻、类固醇、低热量饮食引发。治疗方法包括避免诱发因素、充分补水、高碳水化合物饮食和血红素替代治疗。在此,我们报告一名青春期女性,她反复出现腹痛、伴有癫痫发作的电解质紊乱,被诊断为急性间歇性卟啉病,经对症治疗后恢复良好。