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  • 1.
    Anan, Intissar
    et al.
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin.
    Bång, Joakim
    Umeå universitet, Medicinska fakulteten, Institutionen för kirurgisk och perioperativ vetenskap.
    Lundgren, Hans-Erik
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin.
    Wixner, Jonas
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin.
    Westermark, Per
    A case report of osteoarthritis associated with hereditary transthyretin amyloidosis ATTRV30M2019Inngår i: Amyloid: Journal of Protein Folding Disorders, ISSN 1350-6129, E-ISSN 1744-2818, Vol. 26, s. 29-30Artikkel i tidsskrift (Fagfellevurdert)
  • 2.
    Hellman, Urban
    et al.
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Medicin.
    Alarcon, Flora
    Lundgren, Hans-Erik
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Medicin.
    Suhr, Ole B
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Medicin.
    Bonaiti-Pellié, Catherine
    Planté-Bordeneuve, Violaine
    Heterogeneity of penetrance in familial amyloid polyneuropathy, ATTR Val30Met, in the Swedish population.2008Inngår i: Amyloid : the international journal of experimental and clinical investigation : the official journal of the International Society of Amyloidosis, ISSN 1744-2818, Vol. 15, nr 3, s. 181-6Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Transthyretin (TTR) familial amyloid polyneuropathies (FAP) are autosomal dominant devastating afflictions. They were first described in Portugal, later in Japan and Sweden and are now recognized worldwide. The TTR Val30Met mutation is the most common, and depending on the geographic origin, a wide variation in age at onset of the disease is observed. In Europe, northern Sweden is the second most prevalent area of the disease, and a late age of onset of 56 years has been reported. The present study aims to estimate the penetrance in TTR Val30Met Swedish families. Genealogical investigations, clinical data and genotyping were obtained in 77 TTR-Val30Met Swedish families. The penetrance in Val30Met carriers and variation within the endemic area, according to gender and transmitting parents were calculated by a newly developed bias-free method. The penetrance estimates were low, i.e. 1.7% and 22% at age 30 and 60 years, respectively, and far from complete (69%) by age 90 years. Differences between Piteå and Skellefteå regions were observed. Moreover, penetrance was significantly higher when the mutation was inherited from the mother than from the father. The low penetrance observed in TTR FAP kindreds and its variations is important information for the genetic counseling and treatment of Swedish FAP patients and their families.

  • 3.
    Hellman, Urban
    et al.
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Kardiologi.
    Lundgren, Hans-Erik
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Medicin.
    Westermark, Per
    Stafberg, Christina
    Nahi, Hareth
    Tachlinski, Sascha
    Guggi, Michael
    Flogegard, Max
    Hamid, Mehmet
    Andersson Escher, Stefan
    Suhr, Ole B.
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Medicin.
    A genealogical and clinical study of the phenotypical variation within the Swedish transthyretin His88Arg (p. His108Arg) amyloidosis family2015Inngår i: European Journal of Medical Genetics, ISSN 1769-7212, E-ISSN 1878-0849, Vol. 58, nr 4, s. 211-215Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In 2005 we reported the first case of transthyretin His88Arg (p. His108Arg) amyloidosis, a mutation characterised by cardiomyopathy. Six additional gene carriers of whom five have clinical symptoms of disease have now been identified in Sweden, and we have been able to identify a possible founder and to characterise the Swedish phenotype of the transthyretin (TTR) His88Arg mutation. Genealogical studies of church records were used to identify the individuals with the disease and their families. Routine clinical investigations of neurological and heart manifestation of the disease were utilised. We found that genealogically all seven individuals were related and originated from the same region in Sweden. Amyloid deposits were demonstrated in biopsies and the TTR His88Arg mutation was identified in all patients. Patients had a late onset disease (similar to 50 years of age) and all exhibited a severe amyloid cardiomyopathy. A pronounced peripheral axonal neuropathy was with certainty demonstrated in one patient only, who also was operated for a magnetic resonance confirmed spinal stenosis, however, without any effect on his neurological symptoms. Five of the patients had carpal tunnel syndrome. The first reported case is now deceased from cardiac failure. One patient has had a sequential heart and liver transplantation. One gene carrier had no symptoms or findings of disease on latest evaluation at the age of 44. In conclusion: the Swedish TTRHis88Arg patients all have a common Swedish founder. Cardiomyopathy with heart failure, as well as carpal tunnel syndrome and spinal stenosis were early signs of disease; but peripheral neuropathy was present in one patient before symptoms of cardiomyopathy so the phenotypical presentation of this mutation is variable.

  • 4.
    Hellman, Urban
    et al.
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin.
    Lång, Kenneth
    Ihse, Elisabet
    Jonasson, Jenni
    Umeå universitet, Medicinska fakulteten, Institutionen för medicinsk biovetenskap, Medicinsk och klinisk genetik.
    Olsson, Malin
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin. Umeå universitet, Medicinska fakulteten, Wallenberg centrum för molekylär medicin vid Umeå universitet (WCMM).
    Lundgren, Hans-Erik
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin.
    Pilebro, Björn
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin.
    Westermark, Per
    Wixner, Jonas
    Anan, Intissar
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin. Umeå universitet, Medicinska fakulteten, Wallenberg centrum för molekylär medicin vid Umeå universitet (WCMM).
    Transthyretin Glu54Leu - an unknown mutation within the Swedish population associated with amyloid cardiomyopathy and a unique fibril type2019Inngår i: Scandinavian Journal of Clinical and Laboratory Investigation, ISSN 0036-5513, E-ISSN 1502-7686, s. 1-5Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    For the first time, we report of a Swedish family of five individuals with a TTR Glu54Leu (p. Glu74Leu) mutation in the transthyretin gene. This mutation has been previously described a few times in the literature, but no phenotypic or clinical description has been done before. The most common mutation in the Swedish population is TTRVal30Met and is mostly found in the Northern part of Sweden. Interestingly, the TTRGlu54Leu mutation was found in the same endemic area. The main phenotype of the TTR Glu54Leu patients is severe cardiomyopathy, which resulted in heart transplantation for the index person. As previously seen for ATTR amyloidosis patients with mainly cardiomyopathy, the amyloid fibrils consisted of a mixture of full-length and fragmented TTR species. However, western blot analyses detected a previously unrecognized band, indicating that these patients may have a third, so far unrecognized, fibril composition type that is distinct from the usual type A band pattern.

  • 5.
    Holmgren, Gösta
    et al.
    Umeå universitet, Medicinska fakulteten, Institutionen för medicinsk biovetenskap, Medicinsk och klinisk genetik.
    Hellman, Urban
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Kardiologi.
    Anan, Intissar
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Medicin.
    Lundgren, Hans-Eric
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Medicin.
    Jonasson, Jenni
    Stafberg, Christina
    Fahoum, Saomi
    Suhr, Ole B
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Medicin.
    Cardiomyopathy in Swedish patients with the Gly53Glu and His88Arg transthyretin variants.2005Inngår i: Amyloid, ISSN 1350-6129, Vol. 12, nr 3, s. 184-8Artikkel i tidsskrift (Fagfellevurdert)
  • 6.
    Holmgren, Gösta
    et al.
    Umeå universitet, Medicinska fakulteten, Institutionen för medicinsk biovetenskap, Medicinsk och klinisk genetik.
    Hellman, Urban
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin.
    Lundgren, Hans-Erik
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin.
    Sandgren, Ola
    Umeå universitet, Medicinska fakulteten, Institutionen för klinisk vetenskap, Oftalmiatrik.
    Suhr, Ole B
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin.
    Impact of homozygosity for an amyloidogenic transthyretin mutation on phenotype and long term outcome.2005Inngår i: Journal of Medical Genetics, ISSN 1468-6244, Vol. 42, nr 12, s. 953-6Artikkel i tidsskrift (Fagfellevurdert)
  • 7.
    Norgren, Nina
    et al.
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Medicin.
    Andersson Escher, Stefan
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Medicin.
    Lundgren, Hans-Erik
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Medicin.
    Suhr, Ole B
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Medicin.
    Olsson, Malin
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Medicin.
    Genealogic studies of the Swedish hereditary transthyretin amyloidosis (ATTR V30M) population: differences in age at onset within the populationManuskript (preprint) (Annet vitenskapelig)
  • 8.
    Suhr, Ole B
    et al.
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Medicin.
    Andersen, Oluf
    Aronsson, Thomas
    Jonasson, Jenni
    Umeå universitet, Medicinska fakulteten, Institutionen för medicinsk biovetenskap, Medicinsk och klinisk genetik.
    Kalimo, Hannu
    Lundahl, Christer
    Lundgren, Hans-Eric
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Medicin.
    Melberg, Atle
    Nyberg, Johan
    Olsson, Malin
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Medicin. Umeå universitet, Medicinska fakulteten, Institutionen för medicinsk biovetenskap, Medicinsk och klinisk genetik.
    Sandberg, Arne
    Westermark, Per
    Report of five rare or previously unknown amyloidogenic transthyretin mutations disclosed in Sweden.2009Inngår i: Amyloid: Journal of Protein Folding Disorders, ISSN 1350-6129, E-ISSN 1744-2818, Vol. 16, nr 4, s. 208-214Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The number of amyloidogenic transthyretin (TTR) mutations described in the literature is more than 100. However, for several mutations, the phenotype has been described in a few individuals only; thus, the knowledge of the clinical course and the outcome after therapeutical interventions such as liver transplantation is limited. We describe the phenotype associated with five rare amyloidogenic TTR mutations that lately were discovered in Sweden: ATTR Val30Leu, Ala45Ser, Leu55Gln, Gly57Arg and Tyr69His of which ATTR Gly57Arg is previously unknown. The symptoms at onset differed, but cardiomyopathy and peripheral neuropathy were observed in all except the ATTR Tyr69His mutation. Likewise, carpal tunnel syndrome was found or had been present in all cases except the case with the ATTR Val30Leu mutation. The phenotype of the ATTR Tyr69His mutation was characterised by oculo-meningeal symptoms with seizures and a steadily progressing dementia, symptoms rarely found in ATTR amyloidosis, but similar to those previously described for this mutation, where all cases appear to originate from one Swedish family. Two patients with the ATTR Leu55Gln and Ala45Ser mutations have been subjected to liver transplantation, but echocardiographic examination has revealed an increasing cardiomyopathy after transplantation in both cases, the ATTR Leu55Gln patient succumbed 2 years after transplantation from progressive disease.

  • 9.
    Suhr, Ole B
    et al.
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Avdelningen för medicin.
    Wixner, Jonas
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Avdelningen för medicin.
    Pilebro, Björn
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Kardiologi.
    Lundgren, Hans-Erik
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Avdelningen för medicin.
    Anan, Intissar
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Avdelningen för medicin.
    The Swedish landscape of hereditary ATTR amyloidosis2017Inngår i: Amyloid: Journal of Protein Folding Disorders, ISSN 1350-6129, E-ISSN 1744-2818, Vol. 24, nr 1, s. 93-94Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Northern Sweden is a well-known clustering area for hereditary transthyretin (TTR) amyloid (ATTR) amyloidosis caused by the Val30Met mutation. However, several additional mutations have been found in the Swedish population, of which many, such as the Ala45Ser, Gly57Arg and His88Arg mutations, have not been reported outside of Sweden to the best of our knowledge. We aim to give an overview of the various mutations found in the Swedish population.

  • 10.
    Suhr, Ole Bernt
    et al.
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin.
    Wixner, Jonas
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin.
    Anan, Intissar
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin.
    Lundgren, Hans-Erik
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin.
    Wijayatunga, Priyantha
    Umeå universitet, Samhällsvetenskapliga fakulteten, Handelshögskolan vid Umeå universitet, Statistik.
    Westermark, Per
    Ihse, Elisabet
    Amyloid fibril composition within hereditary Val30Met (p. Val50Met) transthyretin amyloidosis families2019Inngår i: PLoS ONE, ISSN 1932-6203, E-ISSN 1932-6203, Vol. 14, nr 2, artikkel-id e0211983Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Background: The amyloid fibril in hereditary transthyretin (TTR) Val30Met (pVal50Met) amyloid (ATTR Val30Met) amyloidosis is composed of either a mixture of full-length and TTR fragments (Type A) or of only full-length TTR (Type B). The type of amyloid fibril exerts an impact on the phenotype of the disease, and on the outcome of diagnostic procedures and therapy. The aim of the present study was to investigate if the type of amyloid fibril remains the same within ATTR Val30Met amyloidosis families. Methods: Fifteen families were identified in whom at least two first-degree relatives had their amyloid fibril composition determined. The type of ATTR was determined by Western blot in all but two patients. For these two patients a positive 99mTc-3,3-diphosphono-1,2-propanodicarboxylic acid scintigraphy indicated ATTR Type A. Results: In 14 of the 15 families, the same amyloid fibril composition was noted irrespective of differences in age at onset. In the one family, different ATTR fibril types was found in two brothers with similar ages at onset. Conclusions: Family predisposition appears to have an impact on amyloid fibril composition in members of the family irrespective of their age at onset of disease, but if genetically determined, the gene/genes are likely to be situated at another location than the TTR gene in the genome.

  • 11.
    Wixner, Jonas
    et al.
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Avdelningen för medicin.
    Pilebro, Bjorn
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Kardiologi.
    Lundgren, Hans-Erik
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Avdelningen för medicin.
    Olsson, Malin
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Avdelningen för medicin.
    Anan, Intissar
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Avdelningen för medicin.
    Effect of doxycycline and ursodeoxycholic acid on transthyretin amyloidosis2017Inngår i: Amyloid: Journal of Protein Folding Disorders, ISSN 1350-6129, E-ISSN 1744-2818, Vol. 24, nr 1, s. 78-79Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Doxycycline has been shown to disrupt transthyretin amyloid (ATTR) fibrils [1] and tauro-ursodeoxycholic acid (TUDCA) has been shown to reduce TTR toxic aggregates in mice [2]. Further, in 2010 Cardoso et al. showed that a combined doxycycline/TUDCA treatment had a synergistic effect, decreasing ATTR deposition. Ursodeoxycholic acid (UDCA) is a bile acid used for the treatment of certain cholestatic syndromes with an efficacy similar to that of TUDCA. Based on this knowledge, we wanted to explore if treatment with doxycycline and UDCA (Dox/Urso) would prevent disease progression in ATTR amyloidosis. UDCA was selected since TUDCA is not available in Sweden.

  • 12.
    Wixner, Jonas
    et al.
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin.
    Westermark, Per
    Ihse, Elisabet
    Pilebro, Björn
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin.
    Lundgren, Hans-Erik
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin.
    Anan, Intissar
    Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin.
    The Swedish open-label diflunisal trial (DFNS01) on hereditary transthyretin amyloidosis and the impact of amyloid fibril composition2019Inngår i: Amyloid: Journal of Protein Folding Disorders, ISSN 1350-6129, E-ISSN 1744-2818, Vol. 26, s. 39-40Artikkel i tidsskrift (Fagfellevurdert)
1 - 12 of 12
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