Calcitonin (Katacalcin) is a 32 amino acids poly-peptide hormone that is commonly expressed in the parafollicular or C cells in the thyroid gland. It is also synthesized in a wide variety of other tissues, including the lung and intestinal tract (1). Calcitonin is a potent plasma calcium-lowering peptide; it decreases the level of calcium and phosphate in blood by promoting the incorporation of those ions in the bones. Calcitonin staining is used in the identification of C cell proliferative abnormalities, such as C cell hyperplasia and invasive tumors (2). Staining for calcitonin may be used for the identification of a spectrum of C cell proliferative abnormalities ranging from C cell hyperplasia to invasive tumors (e.g. medullary thyroid carcinomas). Calcitonin activitiy might be exhibited in amyloid deposits within the tumor.
Applications:
Suitable for use in Immunohistochemistry. Other applications not tested.
Recommended Dilution:
Immunohistochemistry: 1:200
Optimal dilutions to be determined by the researcher.
Storage and Stability:
May be stored at 4 degrees C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20 degrees C. Aliquots are stable for at least 12 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
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