Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: EC:3.1.3.16 (calcineurin)
 17,112 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Calcineurin is one of the calmodulin binding proteins and a Ca2+-dependent and calmodulin-stimulated phosphoprotein phosphatase. We used antisera to the calcineurin as a cell-type-specific marker in order to identify neuronal cells in the rat brain and human neoplasms. In normal rat brain slices, basal ganglia were stained macroscopically, and other areas such as cerebral cortex, corpus callosum, cerebellar cortex, granular layer and pyramidal tract of the spinal cord were lightly identified as well. Under the light microscope, it was found that only the neuronal cells were stained, and astrocytes, oligodendrocytes, ependymal cells and vessels were not. Intracellular distribution of the staining showed various patterns and staining intensity of varying degree. Using the PAP method, localization of the calcineurin in formalin-fixed, paraffin-embedded tissues were studied in 65 human intracranial neoplasms, and in 11 human extracranial neoplasms. The neuronal elements of neuroblastoma, ganglioglioma, ganglioneuroma and retinoblastoma were clearly stained. In contrast, glioblastoma, astrocytoma, oligodendroglioma, ependymoma, meningioma, neurinoma, pituitary adenoma, craniopharyngioma, hemangioblastoma, hamartoma, lymphoma and mesenchymal tumor were all negative. Two cases out of 5 medulloblastomas were stained, but others were not. Although positive tumors disclosed various staining patterns and intensities, these results indicated that calcineurin could be a new neuronal marker in human brain tumors.
 ...
PMID:Calcineurin as a neuronal marker of human brain tumors. 242 51

We report 4 cases of central neurocytoma removed by a transfrontal approach with no recurrence after a mean follow up of 3 years. This uncommon lesion of the supratentorial ventricles (150 cases reported) occurs in young adults, and often induces intracranial hypertension secondary to an obstructive hydrocephalus. The CT scan, MRI and histopathological features are related. This neuronal origin tumor is difficult to distinguish from other intraventricular processes as oligodendroglioma or ependymoma. However, the immunopositivity for the neuronal markers as synaptophysin, calcineurin and microtubul associated protein 2, and the negativity for the glial fibrillary acidic protein, allow the diagnosis of this neuropathological entity. The prognosis is favorable though some cases of recurrence (14 cases) and cerebrospinal dissemination (2 cases) has been reported in the literature.
 ...
PMID:[Central neurocytoma. A report of 4 cases]. 1037 33