PMID- 7573152 OWN - NLM STAT- MEDLINE DCOM- 19951120 LR - 20131121 IS - 0148-7299 (Print) IS - 0148-7299 (Linking) VI - 58 IP - 1 DP - 1995 Jul 31 TI - Infantile sialic acid storage disease: biochemical studies. PG - 24-31 AB - Infantile free sialic acid storage disease (ISSD), is an inherited metabolic disorder characterized by hyperexcretion of free sialic acid in the urine and by its storage in the lysosomes of different tissues. In order to obtain more reliable data on the amount of total and free sialic acid, we analyzed the urine, brain, cerebellum, liver, spleen, and kidneys from a 3-month-old baby who died with a diagnosis of ISSD. The lysosomal nature of the disease was confirmed by an electron microscopic study of cells in culture. No significant abnormalities were found involving cholesterol, total phospholipids, glycolipids, and gangliosides in the tissues examined. However, differences in the tissue distribution of individual glycolipids and gangliosides were observed. The amount of free and total sialic acid was markedly increased, due to the storage of free sialic acid accompanied by its hyperexcretion in the urine. These results demonstrate and confirm that only acid monosaccharide transport from the lysosome compartment is involved in the pathogenesis of ISSD. FAU - Berra, B AU - Berra B AD - Institute of General Physiology and Biochemistry, University of Milano, Italy. FAU - Gornati, R AU - Gornati R FAU - Rapelli, S AU - Rapelli S FAU - Gatti, R AU - Gatti R FAU - Mancini, G M AU - Mancini GM FAU - Ciana, G AU - Ciana G FAU - Bembi, B AU - Bembi B LA - eng PT - Case Reports PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Am J Med Genet JT - American journal of medical genetics JID - 7708900 RN - 0 (Gangliosides) RN - 0 (Glycolipids) RN - 0 (Glycoproteins) RN - 0 (Membrane Lipids) RN - 0 (Phospholipids) RN - 0 (Sialic Acids) RN - 97C5T2UQ7J (Cholesterol) RN - EC 3.2.1.- (Glycoside Hydrolases) SB - IM MH - Brain Chemistry MH - Carbohydrate Metabolism, Inborn Errors/genetics/*metabolism MH - Cholesterol/analysis MH - Female MH - Fibroblasts/metabolism/ultrastructure MH - Gangliosides/analysis MH - Glycolipids/analysis MH - Glycoproteins/chemistry MH - Glycoside Hydrolases/metabolism MH - Humans MH - Infant, Newborn MH - Infant, Premature MH - Kidney/chemistry MH - Liver/chemistry MH - Lysosomal Storage Diseases/*metabolism MH - Lysosomes/enzymology/ultrastructure MH - Membrane Lipids/analysis MH - Microscopy, Electron MH - Phospholipids/analysis MH - Reference Values MH - Sialic Acids/analysis/*metabolism MH - Spleen/chemistry EDAT- 1995/07/31 00:00 MHDA- 1995/07/31 00:01 CRDT- 1995/07/31 00:00 PHST- 1995/07/31 00:00 [pubmed] PHST- 1995/07/31 00:01 [medline] PHST- 1995/07/31 00:00 [entrez] AID - 10.1002/ajmg.1320580107 [doi] PST - ppublish SO - Am J Med Genet. 1995 Jul 31;58(1):24-31. doi: 10.1002/ajmg.1320580107.