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Related Experiment Videos

Plasma free aminoacids pattern in progressive systemic sclerosis.

P Oriente, A Riccio, C Farinaro

    Bollettino Della Societa Italiana Di Biologia Sperimentale
    |March 30, 1984
    PubMed
    Summary
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    This study measured amino acid levels in patients with progressive systemic sclerosis (PSS). PSS patients showed decreased proline, histidine, valine, and methionine, with increased aspartic acid.

    Area of Science:

    • Biochemistry
    • Clinical Chemistry
    • Immunology

    Background:

    • Progressive systemic sclerosis (PSS) is an autoimmune disease affecting connective tissues.
    • Amino acid profiles may be altered in autoimmune conditions.
    • Understanding these alterations can provide insights into PSS pathophysiology.

    Purpose of the Study:

    • To investigate differences in plasma free amino acid levels between PSS patients and healthy controls.
    • To identify specific amino acids that are significantly altered in PSS.

    Main Methods:

    • Plasma samples were analyzed from 9 female PSS patients and 15 age-matched female healthy controls.
    • Amino acid levels were quantified using a chromatographic method (Beckman 118 BL Aminoacid analyzer).
    • Statistical analysis (ANOVA) was employed to compare amino acid concentrations between groups.

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    Main Results:

    • Significant decreases in plasma proline, histidine, valine, and methionine were observed in PSS patients compared to controls.
    • A significant increase in plasma aspartic acid concentration was found in PSS patients.
    • No significant age difference or other pathological conditions were noted between groups.

    Conclusions:

    • Plasma amino acid profiles are altered in patients with progressive systemic sclerosis.
    • Specific amino acid changes, including decreased essential and non-essential amino acids and increased aspartic acid, may be biomarkers or contribute to PSS pathogenesis.
    • Further research is warranted to explore the functional implications of these amino acid alterations in PSS.