{"title":"Unusual calcifications in a monkey's brain.","authors":"J Kulczycki, M Kozik, M Mossakowski","doi":"10.1007/978-3-642-81553-9_18","DOIUrl":"https://doi.org/10.1007/978-3-642-81553-9_18","url":null,"abstract":"<p><p>Symmetrical foci of calcification were found in both putamina of a baboon's brain. The deposits were related to capillaries and small arteries walls or distributed in the ground substance of the nervous tissue. Laser spectrography analysis disclosed accumulation of calcium, phosphorus, silicium, magnesium and copper. No iron cations were found in the deposits.</p>","PeriodicalId":75397,"journal":{"name":"Acta neuropathologica. Supplementum","volume":"7 ","pages":"59-60"},"PeriodicalIF":0.0,"publicationDate":"1981-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17986105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Glycosaminoglycans of brain tumors transplacentally induced by ENU in the rat.","authors":"M T Giordana, A Mauro, D Schiffer","doi":"10.1007/978-3-642-81553-9_24","DOIUrl":"https://doi.org/10.1007/978-3-642-81553-9_24","url":null,"abstract":"<p><p>GAGs accumulate in the oligodendrogliomas and in the oligodendroglial component of mixed gliomas induced in rats by transplacental ENU. We studied the period between birth and the appearance of the earliest tumoral lesions and did not find any accumulation preceding the early neoplastic proliferations. These findings, together with the observation that GAGs are present only in the oligodendroglial component of tumors, are in agreement with our previous interpretation that the tumoral transformation of oligodendroglia takes place after it has acquired the ability to interfere with GAG metabolism during myelinogenesis.</p>","PeriodicalId":75397,"journal":{"name":"Acta neuropathologica. Supplementum","volume":"7 ","pages":"79-80"},"PeriodicalIF":0.0,"publicationDate":"1981-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17986109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Detection of glycosaminoglycans in human gliomas by histochemical methods.","authors":"P Böck, K Jellinger","doi":"10.1007/978-3-642-81553-9_25","DOIUrl":"https://doi.org/10.1007/978-3-642-81553-9_25","url":null,"abstract":"<p><p>Sulphatized mucopolysaccharides or glycosaminoglycans (GAG) were examined by histochemical methods in biopsy specimens of 69 human cerebral gliomas. The intensity of cell-surface associated GAGs, particularly of the -SO3-groups, was highest in isomorphic oligodendrogliomas and astrocytomas except for pilocytic forms. It showed progressive decrease with increasing degree of anaplasia of these tumors. Anaplastic gliomas only rarely show a very weak reaction for -SO3-groups which was completely absent in glioblastomas, where GAGs are only found in blood vessel walls and mesenchymal stroma. In accordance with observations in experimental gliomas, the rapid loss of membrane-associated GAGs in anaplastic gliomas is considered to indicate a progressive cellular dedifferentiation of glial cells due to hitherto unknown metabolic changes.</p>","PeriodicalId":75397,"journal":{"name":"Acta neuropathologica. Supplementum","volume":"7 ","pages":"81-4"},"PeriodicalIF":0.0,"publicationDate":"1981-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17988500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
C Angelini, P A Battistella, A Laverda, S Pierobon-Bormioli, G Salviati, L Vergani
{"title":"Fatal lipid storage with abnormal mitochondria in an infant.","authors":"C Angelini, P A Battistella, A Laverda, S Pierobon-Bormioli, G Salviati, L Vergani","doi":"10.1007/978-3-642-81553-9_66","DOIUrl":"https://doi.org/10.1007/978-3-642-81553-9_66","url":null,"abstract":"<p><p>Biochemical, electron microscopic observations in muscle and liver of an infant dying at 20 months of age of a mitochondrial myopathy are described. Biochemical analysis of tissues revealed low levels of free, esterified and total carnitine and marked decrease of succinic-dehydrogenase activity while cytochrome c-oxidase was normal. Ultrastructural data showed a megaconial myopathy.</p>","PeriodicalId":75397,"journal":{"name":"Acta neuropathologica. Supplementum","volume":"7 ","pages":"221-5"},"PeriodicalIF":0.0,"publicationDate":"1981-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17989350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Ependymal variations in the caudal spinal cord.","authors":"G Stoltenburg-Didinger, R Bienentreu","doi":"10.1007/978-3-642-81553-9_110","DOIUrl":"https://doi.org/10.1007/978-3-642-81553-9_110","url":null,"abstract":"<p><p>The lumbosacral spinal cord including the cauda equina was examined in 100 unselected autopsied cases of infants dying at or near term. A striking finding in 10% of these cases was the occurrence of bilateral collections of ependymal cells lying in rows on the surface of the lumbosacral cord. In another 25% the central canal was forked or duplicate. These foci were not associated with evidence of defective neural tube closure or spina bifida; the central canal was of normal length. There was no relationship between the ependymal structures and systemic clinical or pathological findings. The pathogenesis and significance of these lesions is unclear. Our observations suggest that they occur regularly and are not associated with neurological disturbances. The relationship of the ependymal cell collections to ependymomas of the caudal spinal cord is open to speculation.</p>","PeriodicalId":75397,"journal":{"name":"Acta neuropathologica. Supplementum","volume":"7 ","pages":"386-8"},"PeriodicalIF":0.0,"publicationDate":"1981-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/978-3-642-81553-9_110","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17990145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
G Pellegrini, G Scarlato, M Moggio, C Bettinelli, S M Gaini
{"title":"Sensorimotor polyneuropathy in light chain multiple myeloma.","authors":"G Pellegrini, G Scarlato, M Moggio, C Bettinelli, S M Gaini","doi":"10.1007/978-3-642-81553-9_75","DOIUrl":"https://doi.org/10.1007/978-3-642-81553-9_75","url":null,"abstract":"<p><p>The authors describe an adult onset sensorimotor polyneuropathy in a woman with light chain K-type myeloma. Neurophysiological investigation showed a severe reduction of conduction velocity of the peripheral nerve to the four limbs. A muscle and sural nerve biopsy were performed. Sural nerve displayed a severe loss of myelinated and unmyelinated fibers. No amyloid deposit was observed in vessels, perineurium and endomysium by electron microscopy examination. No onion bulb formation was present in nerve tissue, but many demyelinated fibers were surrounded by circumferentially disposed Schwann cell processes without any interposition of collagen fibrils. Some fibers exhibit signs of active remyelination; axonal alterations were rarely seen. Collagen pockets were frequently observed among proliferated collagen fibrils. The mechanism of peripheral nerve lesions in various categories of multiple myeloma is till now an unsolved problem. In this case the unusual association with a light chain myeloma suggest that these immunoglobulins play a role in the pathogenesis of the polyneuropathy as supported by experimental studies.</p>","PeriodicalId":75397,"journal":{"name":"Acta neuropathologica. Supplementum","volume":"7 ","pages":"255-7"},"PeriodicalIF":0.0,"publicationDate":"1981-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17836588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effect of prolonged acetylcholinesterase inhibition on postnatal brain development in rabbit. I. Level of serotonin in different brain regions.","authors":"D Maślińska, I Lewandowska, J Prokopczyk","doi":"10.1007/978-3-642-81553-9_16","DOIUrl":"https://doi.org/10.1007/978-3-642-81553-9_16","url":null,"abstract":"<p><p>Studies were performed on young rabbits treated with dichlorvos (organophosphorus pesticide) 9 mg/kg/day by oral gavage. Pesticide was given for 10 days starting on the 6th day of life or as a single dose on the 16th day of life. Animals were sacrificed 30 min, 3 und 24 h after treatment. The spinal cord and the brain were removed and 6 regions (neocortex, hippocampus, basal ganglia, mesencephalon, brain stem, cerebellum) were isolated. Acethylcholinesterase activity was estimated by biochemical and histochemical methods. The concentration of serotonin in brain regions was determined. Acute and prolonged intoxication with dichlorvos inhibited acethylcholinesterase activity. As revealed the histochemical studies, single dose decreased activity of enzyme mainly in neuropil. Prolonged intoxication decreased the acethylcholinesterase in neuropil and in neurons. The single dose of dichlorvos caused the increase of serotonin concentration in all brain regions. After prolonged intoxication the decrease of serotonin concentration in brain stem, mesencephalon and hippocampus for 78, 74, 41% respectively was observed. The cholinergic-serotonergic link is discussed.</p>","PeriodicalId":75397,"journal":{"name":"Acta neuropathologica. Supplementum","volume":"7 ","pages":"52-5"},"PeriodicalIF":0.0,"publicationDate":"1981-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17986104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Subsequent morphological changes in periodic paralysis. A study of seven cases.","authors":"M C Faugere, J F Pellissier, M Toga","doi":"10.1007/978-3-642-81553-9_86","DOIUrl":"https://doi.org/10.1007/978-3-642-81553-9_86","url":null,"abstract":"<p><p>Muscle biopsies were studied in seven patients with various types of periodic paralysis. A sequence for the histopathological feature is suggested: 1. Histology may be normal early in the disease. 2. Vacuolation is found during the active phase characterized by frequent attacks. 3. Tubular aggregates appear later when the frequency of the attacks decreases. 4. Degenerative changes are correlated with the presence of permanent myopathic weakness.</p>","PeriodicalId":75397,"journal":{"name":"Acta neuropathologica. Supplementum","volume":"7 ","pages":"301-4"},"PeriodicalIF":0.0,"publicationDate":"1981-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17989132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Morphometric comparison of Duchenne's muscular dystrophy and experimental bupivacaine myopathy.","authors":"W J Cumming, P Hudgson","doi":"10.1007/978-3-642-81553-9_87","DOIUrl":"https://doi.org/10.1007/978-3-642-81553-9_87","url":null,"abstract":"<p><p>The findings of this study confirm the role of the hyaline fibre in D.M.D. and support the concept of continuing necrosis with progressive failure of regeneration as the major factor in the aetiology of the pathological changes. The persistence of internal nuclei , \"split\" fibres and progressive fibrosis are secondary phenomenon. Comparison of the changes in D.M.D. with those seen in experimental Bupivacaine myopathy shows that the changes in the experimental myopathy are comparable to those seen in D.M.D. between the ages of 4 and 6 years. It is suggested that Bupivacaine myopathy is an acceptable animal model for D.M.D.</p>","PeriodicalId":75397,"journal":{"name":"Acta neuropathologica. Supplementum","volume":"7 ","pages":"305-7"},"PeriodicalIF":0.0,"publicationDate":"1981-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17989133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}