Cryofixation processing is an excellent method to improve the retention of adrenomedullin antigenicity.

We reappraised the precise immunohistochemical localization of adrenomedullin (AM) by means of the combined use of the catalyzed signal amplification (CSA) system and plunge freezing (PF)/freeze substitution (FS) for light microscopy or high-pressure freezing (HPF)/FS for electron microscopy, focusing on the rat adrenal gland and heart. In the case of adrenal glands, the PF processing showed that almost all medullary cells were intensively immunoreactive, while the cortical cells showed weak immunoreaction. In the heart, almost all cardiac muscle cells of the atria were also vividly stained with the PF/FS and the CSA enhancement.

Protein-losing gastropathy associated with autoimmune disease: successful treatment with prednisolone.

We report a patient with protein-losing gastropathy probably associated with autoimmune disease, in whom prednisolone treatment was highly effective. A 45-year-old woman was admitted to our hospital with edema of the face and lower extremities. Blood examination revealed hypoproteinemia, hypoalbuminemia, and hypercholesteremia.