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Calcineurin dephosphorylated microtubule-associated protein 2 (MAP2) and tau factor phosphorylated by cyclic AMP-dependent and Ca2+, calmodulin-dependent protein kinases from the brain. Tubulin, only phosphorylated by the Ca2+, calmodulin-dependent protein kinase, served as substrate for calcineurin. The concentrations of calmodulin required to give(More)
Calcineurin is the calcium (divalent cations)-dependent calmodulin-stimulated phosphoprotein phosphatase which is capable of dephosphorylating various substrate proteins. The subcellular and regional distribution of calcineurin in the rat brain has been studied by light and electron microscopic immunohistochemistry using antiserum against calcineurin.(More)
Three cases of hydrocephalus due to membranous obstruction of the fourth ventricle aperture are reported. Patient's age was 4, 34 and 68 years old and they complained of slowly progressive cerebellar ataxia, gait disturbance and other hydrocephalic symptoms. CT scan revealed symmetrical dilatation of lateral ventricles, and, especially, the fourth ventricle(More)
The multifunctional calmodulin-dependent protein kinase (calmodulin-kinase) from rat brain was autophosphorylated in a Ca2+- and calmodulin-dependent manner. The activity of the autophosphorylated enzyme was independent of Ca2+ and calmodulin. Calmodulin-kinase was dephosphorylated by protein phosphatase C from bovine brain, which is the catalytic subunits(More)
Antisera against glycogen synthase from canine brain were prepared and used for investigation of the localization of the enzyme in the brain. Antisera cross-reacted only with the 88-kilodalton protein that is the subunit of brain glycogen synthase. Immunoreactivity of glycogen synthase was universally distributed in all regions of the brain, although(More)
An 18-year-old man was operated upon with a diagnosis of intracerebral hematoma. Although the angiogram of the right carotid artery demonstrated the characteristic umbrella appearance of the venous angioma in the parietal lobe, fine arterial branches supplying the vascular malformation were noted in the preoperative angiogram. At the operation, no nidus was(More)
Actinomycosis of the central nervous system is rare. There has been considerable discussion as to whether it can be primary, but several cases have been reported occasionally. Authors presented a case of cerebral actinomycosis involving primarily the right frontal lobe through an obsolete stick wound. Patient is a 18-year-old man and when he was 8 years of(More)
Calcineurin immunoreactivity has been successfully detected in formalin-fixed paraffin-embedded postmortem human brain tissue using the peroxidase-antiperoxidase method. We have examined two autopsy cases with Huntington's disease (HD), three cases with Parkinson's disease, and two senile patients as controls. In the controls, calcineurin immunoreactivity(More)
Diagnosis of occult basal encephalocele is not difficult if the peculiar clinical and radiological signs of this anomaly are borne in mind. Recent surgery for transsphenoidal encephalocele has had better results than realized. However, high surgical risks may still be encountered in transsphenoidal encephalocele of the early infantile period, because the(More)