TY - CHAP M1 - Book, Section TI - Porphyria A1 - Laliberte, Bryan A2 - Freeman, Brian S. A2 - Berger, Jeffrey S. Y1 - 2016 N1 - T2 - Anesthesiology Core Review: Part Two Advanced Exam AB - The porphyrias are a group of inherited disorders of hemoglobin biosynthesis, commonly classified according to the broad definitions of neuropsychiatric, dermatological (cutaneous), or mixed. Other classifications of the porphyrias are based on the deficient enzyme, the location of abnormal porphyrin production, or according to the risk of an acute attack (Table 101-1). There are eight susceptible enzymes in the biosynthetic pathway, each characterized by accumulation of porphyrins in body tissues as a result of overproduction or accumulation of porphyrin precursors (Figure 101-1). Abnormal porphyrin production is seen in either the hepatic or the erythropoietic system. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/04/18 UR - accessanesthesiology.mhmedical.com/content.aspx?aid=1135741323 ER -