Skeletal complications in mucopolysaccharidosis VI patients: Case reports

Paula Garcia1, Sérgio B Sousa, Tah Pu Ling

  • 1Unidade de Doenças Metabólicas, Hospital Pediátrico de Coimbra, Coimbra, Portugal.

Insights

Mucopolysaccharidosis (MPS) VI, a genetic disorder, causes significant orthopedic issues. This study details the orthopedic challenges and management strategies in three patients with MPS VI.

Area of Science:

  • Genetics and Metabolic Disorders
  • Orthopedics and Musculoskeletal Health
  • Lysosomal Storage Diseases

Background:

  • Mucopolysaccharidosis (MPS) VI is an inherited lysosomal storage disorder.
  • Patients with MPS VI frequently develop severe skeletal abnormalities.
  • Orthopedic complications significantly impact patient quality of life.

Purpose of the Study:

  • To describe the orthopedic problems in three patients with MPS VI.
  • To illustrate the progression of orthopedic manifestations in MPS VI.
  • To highlight management approaches for orthopedic issues in MPS VI.

Main Methods:

  • Case series describing three patients with MPS VI.
  • Focus on clinical presentation and radiographic findings of orthopedic conditions.
  • Review of management strategies employed for skeletal deformities.

Main Results:

  • Detailed description of hip dysplasia, spinal deformities, and deformities in the skull, knees, and hands in the cases.
  • Observation of disease progression over time.
  • Evaluation of the effectiveness of various orthopedic interventions.

Conclusions:

  • MPS VI presents with a spectrum of severe orthopedic challenges.
  • Comprehensive orthopedic management is crucial for addressing MPS VI-related skeletal issues.
  • Further research into optimal treatment strategies for orthopedic manifestations is warranted.

Related Concept Videos

Glycosaminoglycans01:23

Glycosaminoglycans

Glycosaminoglycans (GAGs), also known as mucopolysaccharides, are long and linear polymers comprising of specific repeating disaccharides - the amino sugar that can be N-acetylglucosamine or N-acetylgalactosamine, and a uronic acid that is usually glucuronic acid or iduronic acid.
GAGS are found in the extracellular matrix of vertebrates, invertebrates, and bacteria. Due to their polar nature they attract water, and serve as excellent lubricants or shock absorbers in an animal body.
Hyaluronic...
Bone Disorders01:29

Bone Disorders

Aging and its effect on bone remodeling is the most common cause of bone disorders. In young and healthy people, bone deposition and resorption happen at an equal rate to maintain optimal bone health.
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
Proteoglycans01:05

Proteoglycans

Glycans, a class of complex heterogeneous molecules, can be covalently attached to proteins to form glycosylated proteins that regulate various physiological and pathological processes. Glycosylated proteins or glycoproteins comprise N-linked and O-linked oligosaccharides. O-glycosylation is the most common type of protein glycosylation. Here, glycans attach to the oxygen atom of the hydroxyl groups of Serine or Threonine residues. O-linked glycosylation occurs later in protein processing,...
Lysosomal Hydrolases01:22

Lysosomal Hydrolases

Lysosomes are the site for the degradation of macromolecules and biological polymers released during membrane trafficking events such as secretory, endocytic, autophagic, and phagocytic pathways. The membrane-enclosed area of the lysosome, called the lumen, contains hydrolytic enzymes active in an acidic environment. These acid hydrolases are functional at a pH between 4.5 and 5 and are involved in cellular processes such as cell signaling, energy metabolism, restoration of the plasma membrane,...
Disorders of the Skeletal Muscle01:28

Disorders of the Skeletal Muscle

The clinical conditions affecting the skeletal muscle tissue are broadly categorized as musculoskeletal and neuromuscular disorders.
Musculoskeletal disorders
Musculoskeletal disorders involve injuries and conditions affecting the skeletal muscles and associated connective tissues. These disorders can arise from acute biomechanical stresses or chronic overuse and can occur across different age groups. Common injuries include sprains, fractures, and muscular strains, often resulting from...