Definition

Mucopolysaccharides are long chains of sugar molecules that are found throughout the body, often in mucus and in fluid around the joints. They are more commonly called glycosaminoglycans.

Alternative Names

Glycosaminoglycans; GAG

Information

When the body cannot break down mucopolysaccharides, a condition called mucopolysaccharidoses (MPS) occurs. MPS refers to a group of inherited disorders of metabolism. People with MPS do not have any, or enough, of a substance (enzyme) needed to break down sugar molecule chains.

Forms of MPS include:

• MPS I (Hurler syndrome; Hurler-Scheie syndrome; Scheie syndrome)
• MPS II (Hunter syndrome)
• MPS III (Sanfilippo syndrome)
• MPS IV (Morquio syndrome)

References

Kumar V, Abbas AK, Aster JC. Genetic disorders. In: Kumar V, Abbas AK, Aster JC, eds. Robbins & Cotran Pathologic Basis of Disease. 10th ed. Philadelphia, PA: Elsevier; 2021:chap 5.

Pyeritz RE. Inherited diseases of connective tissue. In: Goldman L, Schafer AI, eds. Goldman-Cecil Medicine. 26th ed. Philadelphia, PA: Elsevier; 2020:chap 244.

Spranger JW. Mucopolysaccharidoses. In: Kliegman RM, St. Geme JW, Blum NJ, Shah SS, Tasker RC, Wilson KM, eds. Nelson Textbook of Pediatrics. 21st ed. Philadelphia, PA: Elsevier; 2020:chap 107.