Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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UNKNOWN
NA
10 participants
INTERVENTIONAL
2018-01-31
2018-12-31
Brief Summary
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Detailed Description
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PXE is associated with mutations of ABCC6 gene coding for the membrane transporter ABCC6 protein. This transporter is normally expressed in hepatocytes and epithelial cells of renal proximal convoluted tubules.
Thus, PXE could be regarded as a metabolic disease of hepatic and renal origin, with clinical and biological involvement/consequences for remote organs.
The substance transported by ABCC6 protein being still unknown, ethiological PXE treatment does not exist yet. However, ABCC6 deficiency is associated with low level of blood PPi (pyrophosphate), which is natural inhibitor of calcium-phosphate deposition.
The aim of the project is to obtain the renal cells derived from PXE patients for their further usage in proteomic and metabolomic studies, as well as for screening of treatment modalities aimed to correct ABCC6 functional deficiency.
Conditions
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Keywords
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Study Design
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NA
SINGLE_GROUP
BASIC_SCIENCE
NONE
Study Groups
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PXE patients
urine collection and culture of renal cells
urine collection
3 urine collections during 24 hours
Interventions
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urine collection
3 urine collections during 24 hours
Eligibility Criteria
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Inclusion Criteria
* Patient aged over 18
* Patient informed, having understood the purpose and means of the study and signed the consent of participation
* Patient affiliated to the French social welfare system
Exclusion Criteria
* Patient under guardianship, deprived of liberty by court or administrative decision, hospitalized without consent or admitted to a health or social institution for purposes other than research
18 Years
ALL
No
Sponsors
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Université de Nantes
OTHER
Hungarian Academy of Sciences
OTHER
University Hospital, Angers
OTHER_GOV
Responsible Party
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References
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Si-Tayeb K, Idriss S, Champon B, Caillaud A, Pichelin M, Arnaud L, Lemarchand P, Le May C, Zibara K, Cariou B. Urine-sample-derived human induced pluripotent stem cells as a model to study PCSK9-mediated autosomal dominant hypercholesterolemia. Dis Model Mech. 2016 Jan;9(1):81-90. doi: 10.1242/dmm.022277. Epub 2015 Nov 19.
Chassaing N, Martin L, Calvas P, Le Bert M, Hovnanian A. Pseudoxanthoma elasticum: a clinical, pathophysiological and genetic update including 11 novel ABCC6 mutations. J Med Genet. 2005 Dec;42(12):881-92. doi: 10.1136/jmg.2004.030171. Epub 2005 May 13.
Jansen RS, Duijst S, Mahakena S, Sommer D, Szeri F, Varadi A, Plomp A, Bergen AA, Oude Elferink RP, Borst P, van de Wetering K. ABCC6-mediated ATP secretion by the liver is the main source of the mineralization inhibitor inorganic pyrophosphate in the systemic circulation-brief report. Arterioscler Thromb Vasc Biol. 2014 Sep;34(9):1985-9. doi: 10.1161/ATVBAHA.114.304017. Epub 2014 Jun 26.
Jansen RS, Kucukosmanoglu A, de Haas M, Sapthu S, Otero JA, Hegman IE, Bergen AA, Gorgels TG, Borst P, van de Wetering K. ABCC6 prevents ectopic mineralization seen in pseudoxanthoma elasticum by inducing cellular nucleotide release. Proc Natl Acad Sci U S A. 2013 Dec 10;110(50):20206-11. doi: 10.1073/pnas.1319582110. Epub 2013 Nov 25.
Other Identifiers
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49RC17_0063
Identifier Type: -
Identifier Source: org_study_id