Unbound MEDLINE

Differential gene expression by oxyphil and chief cells of human parathyroid glands.

Abstract

CONTEXT
Parathyroid oxyphil cells, whose function is unknown, are thought to be derived from chief cells. Oxyphil cells increase in number in parathyroid glands of patients with chronic kidney disease (CKD) and are even more abundant in patients receiving treatment for hyperparathyroidism with calcitriol and/or the calcimimetic cinacalcet.
OBJECTIVE
We examined oxyphil and chief cells of parathyroid glands of CKD patients for differential expression of genes important to parathyroid function.
DESIGN/SETTING/PARTICIPANTS
Parathyroid tissue from CKD patients with refractory hyperparathyroidism was immunostained for gene expression studies.
MAIN OUTCOME MEASURE
Immunostaining for PTH, PTHrP, calcium-sensing receptor, glial cells missing 2, vitamin D receptor, 25-hydroxyvitamin D-1α-hydroxylase, and cytochrome c was quantified and expression reported for oxyphil and chief cells.
RESULTS
Expression of all proteins analyzed, except for the vitamin D receptor, was higher in oxyphil cells than in chief cells.
CONCLUSION
Human parathyroid oxyphil cells express parathyroid-relevant genes found in the chief cells and have the potential to produce additional autocrine/paracrine factors, such as PTHrP and calcitriol. Additional studies are warranted to define the secretory properties of these cells and clarify their role in parathyroid pathophysiology.

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  • Publisher Full Text
  • Authors

    Ritter CS, Haughey BH, Miller B, Brown AJ

    Institution

    Renal Division, Washington University School of Medicine, Barnes Jewish Hospital, St Louis, Missouri 63110, USA.

    Source

    The Journal of clinical endocrinology and metabolism 97:8 2012 Aug pg E1499-505

    MeSH

    Adult
    Aged
    Female
    Gene Expression Profiling
    Humans
    Male
    Middle Aged
    Nuclear Proteins
    Oxyphil Cells
    Parathyroid Glands
    Parathyroid Hormone
    Parathyroid Hormone-Related Protein
    Receptors, Calcitriol
    Receptors, Calcium-Sensing
    Transcription Factors

    Pub Type(s)

    Journal Article
    Research Support, N.I.H., Extramural
    Research Support, Non-U.S. Gov't

    Language

    eng

    PubMed ID

    22585091