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Carrier of R14W in ...
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Köhn, Linda,1979-Umeå universitet,Medicinsk och klinisk genetik
(författare)
Carrier of R14W in carbonic anhydrase IV presents Bothnia dystrophy phenotype caused by two allelic mutations in RLBP1
- Artikel/kapitelEngelska2008
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Association for Research in Vision and Ophthalmology,2008
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LIBRIS-ID:oai:DiVA.org:umu-26981
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https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-26981URI
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https://doi.org/10.1167/iovs.07-1664DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:art swepub-publicationtype
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Purpose: Bothnia dystrophy (BD) is an autosomal recessive retinitis pigmentosa (arRP) associated with the c.700C>T mutation in the RLBP1 gene. Testing of patients with BD has revealed the c.700C>T mutation on one or both alleles. The purpose of this study was to elucidate the underlying genetic mechanisms along with a clinical evaluation of the heterozygous patients with BD.Methods: Patients with BD heterozygous for the RLBP1 c.700C>T were tested for 848 mutations by arrayed primer-extension technology. Further mutation detection was performed by PCR-restriction fragment length polymorphism (RFLP), sequencing, denaturing (d)HLPC and allelic discrimination. The ophthalmic examinations were performed in all c.700C>T heterozygotes.Results: The clinical findings in 10 BD heterozygotes were similar to those in the homozygotes. The presence of a second mutation, c.677T>A, corresponding to p.M226K was detected in all 10 cases. Segregation analysis showed that the mutations were allelic, and the patients were compound heterozygotes [c.677T>A]+[c.700C>T]. One of those patients was also a carrier of the c.40C>T corresponding to the p.R14W change in carbonic anhydrase IV (CAIV) associated with autosomal dominant RP, RP17. His mother, a carrier of the identical change was declared healthy after ophthalmic examination. This sequence variant was found in 6 of 143 tested blood donors.Conclusions: The high frequency of arRP in northern Sweden is due to two mutations in the RLBP1 gene: c.677T>A and c.700C>T. BD is caused by the loss of CRALBP function due to changed physical features and impaired activity of retinoid binding. The CAIV p.R14W sequence variant found in one of the patients with a BD phenotype is a benign polymorphism in a population of northern Sweden.
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Burstedt, Marie SIUmeå universitet,Oftalmiatrik(Swepub:umu)maebut83
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Jonsson, FridaUmeå universitet,Medicinsk och klinisk genetik(Swepub:umu)frajon98
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Kadzhaev, KonstantinUmeå universitet,Medicinsk och klinisk genetik(Swepub:umu)koka0001
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Haamer, EneliAsper Biotech, Tartu, Estonia
(författare)
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Sandgren, OlaUmeå universitet,Oftalmiatrik(Swepub:umu)olsa0001
(författare)
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Golovleva, IrinaUmeå universitet,Medicinsk och klinisk genetik(Swepub:umu)irgo0001
(författare)
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Umeå universitetMedicinsk och klinisk genetik
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Investigative Ophthalmology and Visual Science: Association for Research in Vision and Ophthalmology49:7, s. 3172-31770146-04041552-5783
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