Linked Life Data

18554282

Source:http://linkedlifedata.com/resource/pubmed/id/18554282

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2008-10-6
pubmed:abstractText
Mandibuloacral dysplasia type A (MADA; OMIM 248370), a rare disorder caused by mutation in the LMNA gene, is characterized by post-natal growth retardation, craniofacial and skeletal anomalies (mandibular and clavicular hypoplasia, acroosteolysis, delayed closure of cranial sutures, low bone mass and joint contractures), cutaneous changes and partial lipodystrophy. Little is known about the molecular mechanisms by which LMNA mutations produce bone alterations. An altered bone extracellular matrix (ECM) remodelling could play a pivotal role in this disorder and influence part of the typical bone phenotype observed in patients. Therefore, we have focused our investigation on matrix metalloproteinases (MMPs), which are degradative enzymes involved in ECM degradation and ECM remodelling, thus likely contributing to the altered bone mineral density and bone metabolism values seen in five MADA patients. We evaluated the serum levels of several MMPs involved in bone development, remodelling and homeostasis, such as MMP-9, -2, -3, -8 and -13, and found that only the 82 kDa active enzyme forms of MMP-9 are significantly higher in MADA sera compared with healthy controls (n = 16). The serum level of MMP-3 was instead lower in all patients. No significant differences were observed between controls and MADA patients for the serum levels of MMP-2, -8 and -13 and of tissue inhibitor of metalloproteinase 2, a natural inhibitor of MMP-9. Similarly, normal serum levels of tumour necrosis factor alpha (TNF-alpha), interleukin (IL)-6 and IL-1beta were detected. These data suggest a possible involvement of MMP-9 in MADA disease, underlying the potential use in diagnosis and therapy.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
1399-0004
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
74
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
374-83
pubmed:meshHeading
pubmed:year
2008
pubmed:articleTitle
Increased release and activity of matrix metalloproteinase-9 in patients with mandibuloacral dysplasia type A, a rare premature ageing syndrome.
pubmed:affiliation
Department of Biopathology and Diagnostic Imaging, University of Rome Tor Vergata, Rome, Italy.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't