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Related Experiment Videos

Physiologic and genetic alterations in human red cell DPGM.

R D Koler, M R McClung, L L Peterson

    Hemoglobin
    |January 1, 1980
    PubMed
    Summary

    Erythrocyte 2,3-diphosphoglycerate mutase (DPGM) levels are altered in thyroid conditions. Hypothyroidism significantly decreases DPGM, while hyperthyroidism slightly increases it, with levels normalizing after treatment.

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    Area of Science:

    • Biochemistry
    • Hematology
    • Endocrinology

    Background:

    • Erythrocyte 2,3-diphosphoglycerate (2,3-DPG) levels are crucial for oxygen transport.
    • These levels are primarily regulated by diphosphoglycerate mutase (DPGM), an enzyme with dual phosphatase activity.

    Observation:

    • An antiserum was used to quantify DPGM in red blood cells from various groups.
    • Groups included normal controls, hypothyroid, hyperthyroid subjects, and a patient with hemolytic anemia.

    Findings:

    • Normal adult erythrocytes contain 0.98 ± 0.014 mg/gm Hb of DPGM.
    • Hypothyroid subjects showed significantly lower DPGM levels (0.82 ± 0.06 mg/gm Hb).
    • Hyperthyroid subjects and normal cord blood exhibited slightly increased DPGM concentrations.

    Implications:

    • Thyroid status directly influences erythrocyte DPGM levels, impacting oxygen delivery.
    • DPGM measurement can serve as a biomarker for thyroid dysfunction.
    • Genetic variants affecting DPGM can lead to conditions like hemolytic anemia.

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