Search for dissertations about: "Lena Ström"

Showing result 1 - 5 of 14 swedish dissertations containing the words Lena Ström.

  1. 1. Organic acids in root exudates and soil solutions. Importance to calcicole and calcifuge behaviour of plants

    Author : Lena Ström; Institutionen för naturgeografi och ekosystemvetenskap; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; nutrient-solubilisation; iron; phosphate; nutrient-limitations; citrate; oxalate; organic acids; root exudation; acidifuge; Calcicole; calcifuge; adaptations.; Plant ecology; Växtekologi;

    Abstract : Many vascular plant species are unable to colonise calcareous sites, the floristic composition of adjacent limestone and acid silicate soils differing markedly. The inability of these 'calcifuge' species to establish themselves and grow on limestone soil appears to mainly be related to their low capacity for solubilising and absorbing phosphate and/or iron from such soils. READ MORE

  2. 2. Regulation of the murine immunoglobulin GL gamma-1 and epsilon promoters

    Author : Lena Ström; Karolinska Institutet; Karolinska Institutet; []

    Abstract : The immune system takes advantage of different genetic alterations to amplify its diversity. First at early stages of B cell differentiation when the antigen (ag) receptors are assembled from different gene segments. READ MORE

  3. 3. Visual evoked potentials in the horse

    Author : Lena Ström; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []

    Abstract : Vision is an important sense for horses, both for survival in the wild and when horses are used for work, sport or recreation. However, it is often difficult to diagnose visual impairment in this species. READ MORE

  4. 4. Expression and functional analysis of the SCA7 disease protein ataxin-7

    Author : Anna-Lena Ström; Monica Holmberg; Patrik Brundin; Umeå universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Molecular biology; Polyglutamine disease; CAG repeat; Spinocerebellar ataxia type 7; Molekylärbiologi; Molecular biology; Molekylärbiologi; molekylärbiologi; Molecular Biology;

    Abstract : Spinocerebellar ataxia type 7 (SCA7) is a neurodegenerative disease characterized by cerebellar ataxia and visual problems due to a progressive and selective loss of neurons within the cerebellum, brainstem and retina. The disease is caused by the expansion of a CAG repeat in the first coding exon of the SCA7 gene, resulting in an expanded polyglutamine domain in the N-terminal part of ataxin-7, a protein of unknown function. READ MORE

  5. 5. Molecular mechanism(s) underlying neurodegeneration in SCA7 disease : Role of NOX enzymes and oxidative stress

    Author : Abiodun Ajayi; Anna-Lena Ström; Ana Cristina Rego; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; neurodegeneration; oxidative stress; NOX; metabolism; p53; neurokemi med molekylär neurobiologi; Neurochemistry with Molecular Neurobiology;

    Abstract : Spinocerebellar ataxia type 7 (SCA7) is an autosomal dominant neurodegenerative disorder caused by a CAG trinucleotide expansion in the SCA7 gene resulting in progressive ataxia and retinal dystrophy. SCA7 belongs to a group of neurodegenerative disorders called polyglutamine (polyQ) diseases, that share the common feature of glutamine tract expansions within otherwise unrelated proteins. READ MORE