Clinical Neuroscience

[The prognostic relevance of apoptosis in medulloblastoma]


MAY 20, 1996

Clinical Neuroscience - 1996;49(05-06)

[Apoptosis is known to be a phenomenon of prognostic significance in certain neoplasms. Several previous studies have indicated that the prognosis of desmoplastic medulloblastoma is better than that of classical medulloblastoma. We studied 5 desmoplastic and 5 classical medulloblastomas by in situ end labelling of DNA strand breaks to see whether there is any difference in amount or pattern of apoptosis in these subtypes, correlating to the different prognostic behaviour. We found no significant difference neither in amount nor in pattern of apoptosis between the two subtypes. Our results indicate that apoptosis may not be a relevant variable in the prognosis of medulloblastoma.]


  1. Institute of Neuropathology, Berlin



Further articles in this publication

Clinical Neuroscience

[Somatic defects and pain manifested at adults' drawings of a man]


[The outhor observed that “draw-a-man tests” of mentally retarded or demented adult patients may truly reflect their somatic defects or painful disorders. Drawings of mentally intact patients could also exhibit their somatic illness if it causes pain or the compensating mechanisms are insufficient. A brief discussion is given on the possible mechanisms, in connection with the body-schema.]

Clinical Neuroscience

[Topographic pattern of spike-waves in absence seizures]


[Topography of generalized ictal spike-wave patterns (absence seizures) have been investigated by voltage mapping analysis. The 31 patients investigated in this study belonged to a wide variezy of epileptic syndromes with absence seizures. Previously described different topographic patterns of the spike and the wave components have been confirmed in this study.]

Clinical Neuroscience

[The effect os levodopa in Parkinson's disease ]

MECHLER Ferenc, DIÓSZEGHY Péter, GLAUB Theodóra, HIDASI Eszter, JOSE Rosa

[The effect of carbidopa/levodopa on clinical signs and laboratory data was studied in 21 patients with Parkinson's disease during a follow-up period of 7-12 months. The Columbia and Webster scales were used for analysis. The improvement was significant already in the first weeks of the treatment. The drug did not influence the laboratory data and the side effects were found to be insignificant. The changes due to the drug were analysed by electrophysiological methods. Certain peak amplitudes and the area of visually evoked responses increased significantly during the treatment suggesting facilitation in the function of visual pathways. On stimulating the motor system by transcranial and spinal magnetic stimulation, the motor latencies and the duration of silent period showed normalization. ]

Clinical Neuroscience

[Thrombolytic therapy in acute ischemic stroke (preliminary report)]

HAFFNER Zsolt, HORVÁTH Erzsébet, HORVÁTH Éva, PAPP Gabriella, EGERVÁRI Ágnes, LIPÓTH Sarolta, CSÁNYI Attila, TUKA Andrea

[Intravenous stretiokinase infusion therapy was performed on four patients in acute occulsive cerebrovascular disease (hemorrhage was rxcluded by CT scan). The thrombolytic therapy was started not later than six hours after the onset of the first symptoms. Kabikinase (1 250 000 IU) was administered in intravenous infudion during two hours. After thrombolysis no prolonged anticoagulant therapy was applied. Improvement of the neurological symptoms was impressive and convincing: in two cases immadiate. Ino one case we could be observed during the treatment (2 hours) nor after it. The possibility of thromolytic therapy in acute occulsiv stroke should be take into consideration. So far as we are aware this is the first time that thromolysis is occulsive stroke according to a protocol like this has been used in Hungary.]

Clinical Neuroscience

[Glaucomatous optic nerve disease]

ÁGNES Boros, JOHN Bryan Fenton, IVAN Bodis-Wollner

[Glaucomatous optic nerve disease (GOND) is the axonal neuropathy of the optic nerve and this diagnosis should enter the differential diagnosis of patients complaining of progressive diminution of vision. A positive family history is one of the major risk factors. Current theories regard the elevation of intractor pressure only a risk factor of GOND, not as its cause. The pathophysiology of ganglion cell dam- age in GOND in some respect parallels processes in other neurodegenerative disease. Current therapy aims at reducing the intraocular pressure and new forms of therapy, to prevent neuronal death are being developed. ]

All articles in the issue

Related contents

Clinical Neuroscience



[The main challenge is the investigation of mechanism for apoptosis research and the drug development. Mitochondria have a key position in the production of reactive oxygen species and in the evolution of apoptosis. More possible pathway will be known with the apoptosis investigation. For development of neuroprotective molecules could give strategies the investigation of apoptosis. Exact knowledge of apoptosis provides possibility to screen new neuroprotective molecules. We elaborate a research assay, which could provide quantitative and qualitative data about the free radical production and the mitochondrial transmembrane potential using confocal microscope. So thus we could screen drug candidate, neuroprotective molecules.]

Hungarian Immunology

[On the role of aging in etiology of autoimmunity]

SEMSEI Imre, ZEHER Margit, BAKÓ Gyula

[Several types of diseases, among others autoimmune illnesses, could be coupled with the general processes of aging. The two-edged sword of the immune defense is directed once against environmental attacks and on the other side against the self. However, one has to make a difference between normal (physiological) clearance and autoimmune diseases, although both sides of autoimmunity are influenced by the general processes of senescence. Aging of the thymus seems to be one of the key elements of the etiology of autoimmunity, although other cell types and their aging also play a substantial role in this process. The spontaneous genetic instability, the acquired genetic mutations due to aging and the age-related alterations of the information level of the body together may be important elements of the patomechanism of both the physiological autoimmunity and the autoimmune diseases. Nevertheless, physiological autoimmunity seems to be directed mostly by natural factors (such as aging and apoptosis) but primary autoimmune diseases may be caused by genetic instability that is enhanced by aging as well.]

Hungarian Immunology

[Therapeutic treatment of rheumatoid arthritis by gene therapy-induced apoptosis]

WOODS M. James, VOLIN V. Michael

[Gene therapy was initially conceptualized as a treatment for individuals with genetic disorders, where defective genes would be replaced with functional ones. This concept was eventually broadened to include the use of gene therapy as a delivery mechanism for gene products effective in the treatment of diseases. The latter use of gene therapy, essentially as a drug delivery mechanism, was recognized to be particularly useful in the treatment of rheumatoid arthritis because it may have many advantages over traditional therapies. Two groups of target genes that are potentially useful for gene transfer include soluble inflammatory mediators that in theory could suppress the inflammatory process, and apoptotic mediators that may induce cell death, thereby suppressing the accumulation of inflammatory cells in the joint. To date the former group of target genes has received most of the attention, but it is the latter group of apoptosis-inducing targets that will be discussed in this review. We will focus our discussion on target genes that have shown success at inducing apoptosis in animal models of arthritis and will also include discussion of the apoptotic pathways that are altered in the attempts to reduce inflamed synovial tissue.]

Lege Artis Medicinae

[The role of apoptosis in human diseases]


[Apoptosis and mitosis control the homeostasis of various cell populations. Several diseases are characterised by too much or to small amount of apoptosis. Carcinogenesis itself is connected with a decrease in apoptotic activity and malignant neoplasms are also known to show low apoptotic index. However, each type of malignant tumors should be viewed as a distinct entity, regarding the capacity for the induction of apoptosis especially. The role of apoptosis in the pathogenesis and progression of autoimmune, infectious, neurodegenerative diseases and alterations in the liver, kidney, lung and heart is also discussed, with special emphasis on therapeutic possibilities influencing the imbalance of apoptosis. ]

Hungarian Immunology

[The role of nerve growth (NGF) factor in the immune and inflammatory events and in autoimmune thyroid diseases]


[Nerve growth factor (NGF) is a neurotroph cytokine, and beside its effect on the central and peripheral nervous systems NGF plays an important role in the inflammatory and autoimmune processes. There are two types of NGF receptors, the high-affinity (TrkA) and the low-affinity (p75), which activations via signal transduction could lead to the inhibition or induction of apoptosis. Suppression of apoptosis could be induced by cytokines, hormones, antioxidans and increased intracellular Ca2+-levels. In the pathogenesis of many autoimmune diseases (systemic lupus erythematosus, 1-type diabetes mellitus, multiple sclerosis) could detect elevated serum levels of NGF associated with the disease activity. Our study demonstrated increased levels of NGF in autoimmune thyroid diseases (Graves’ disease, Hashimoto’s thyroiditis) in comparison with the controls. Decreased serum levels of NGF were found in Graves’ ophthalmopathy suggesting the role of apoptosis in the development of the eye symptoms. Orbital tissues are characterized with the high expression of TrkA receptors. NGF plays an important role in the pathomechanisms of neuro-immuno-hormonal diseases and its knowledge may be helpful in the diagnosis and therapy.]