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G Schock

Publications and source records attributed to G Schock.

At least 19 recordsLinked to original sources
PubMed2004

Escalating immunotherapy of multiple sclerosis--new aspects and practical application.

Recent clinical studies in multiple sclerosis (MS) provide new data on the treatment of clinically isolated syndromes, on secondary progression, on direct comparison of immunomodulatory treatments and on dosing issues. All these studies have important implications for the optimized care of MS patients. The multiple sclerosis therapy consensus group (MSTCG) critically evaluated the available data and provides recommendations for the application of immunoprophylactic therapies. Initiation of treatment after the first relapse may be indicated if there is clear evidence on MRI for subclinical dissemination of disease. Recent trials show that the efficacy of interferon beta treatment is more likely if patients in the secondary progressive phase of the disease still have superimposed bouts or other indicators of inflammatory disease activity than without having them. There are now data available, which suggest a possible dose-effect relation for recombinant beta-interferons. These studies have to be interpreted with caution, as some potentially important issues in the design of these studies (e. g. maintenance of blinding in the clinical part of the study) were not adequately addressed. A meta-analysis of selected interferon trials has been published challenging the value of recombinant IFN beta in MS. The pitfalls of that report are discussed in the present review as are other issues relevant to treatment including the new definition of MS, the problem of treatment failure and the impact of cost-effectiveness analyses. The MSTCG panel recommends that the new diagnostic criteria proposed by McDonald et al. should be applied if immunoprophylactic treatment is being considered. The use of standardized clinical documentation is now generally proposed to facilitate the systematic evaluation of individual patients over time and to allow retrospective evaluations in different patient cohorts. This in turn may help in formulating recommendations for the application of innovative products to patients and to health care providers. Moreover, in long-term treated patients, secondary treatment failure should be identified by pre-planned follow-up examinations, and other treatment options should then be considered.

Clinical Trials as Topic↗
PubMed1999

Complexity and expression of the glutamine synthetase multigene family in the amphidiploid crop Brassica napus.

In the amphidiploid genome of oilseed rape (Brassica napus) the diploid ancestral genomes of B. campestris and B. oleracea have been merged. As a result of this crossing event, all gene loci, gene families, or multigene families of the A and C genome types encoding a certain protein are now combined in one plant genome. In the case of the multigene family for glutamine synthetase, the key enzyme of nitrogen assimilation, six different cDNA sequences were isolated from leaf and root specific libraries. One sequence pair (BnGSL1/BnGSL2) was characterized by the presence of amino-terminal transit peptides, a typical feature of all nuclear encoded chloroplast proteins. Two other cDNA pairs (BnGSR1-1/BnGSR1-2 and BnGSR2-1/BnGSR2-2) with very high homology between each other were found in a root specific cDNA library and represent protein subunits for cytosolic glutamine synthetase isoforms. Comparative PCR amplifications of genomic DNA isolated from B. napus, B. campestris and B. oleracea followed by sequence-specific restriction analyses of the PCR products permitted the assignment of the cDNA sequences to either the A genome type (BnGSL1/BnGSR1-1/BnGSR2-1) or the C genome type (BnGSL2/BnGSR1-2/BnGSR2-2). Consequently, the ancestral GS genes of B. campestris and B. oleracea are expressed simultaneously in oilseed rape. This result was also confirmed by RFLP (restriction fragment length polymorphism) analysis of RT-PCR products. In addition, the different GS genes showed tissue specific expression patterns which are correlated with the state of development of the plant material. Especially for the GS genes encoding the cytosolic GS isoform BnGSR2, a marked increase of expression could be observed after the onset of leaf senescence.

Blotting, Northern↗
PubMed1996

Expression of CD44 isoforms in basal cell carcinomas.

The expression of CD44 isoforms (CD44std, CD44v6, CD44v10) was investigated by an immunohistochemical technique in 42 basal cell carcinomas (BCC) of the superficial and nodular variety. All BCCs studied displayed very low amounts of CD44std, a receptor for hyaluronic acid. Except for single CD44std-positive cells located preferentially in the central parts of the BCC nests, the bulk of the tumour formations were CD44std-negative. CD44v6 showed a heterogeneous distribution pattern accentuated in the peripheral palisading tumour cells. In superficial BCCs, the labelling intensity for CD44v6 increased with the size of the tumour nests. CD44v10 was not detectable in BCCs. Our findings support the notion that CD44v6 is not linked to the metastatic proclivity of tumours originating from keratinocytes. We suggest that the very low expression of the receptor for hyaluronic acid (CD44std) may be one of the factors which block the formation of metastases from BCCs.

Antigens, Neoplasm↗
PubMed1994

Fixation requirements for the immunohistochemical reactivity of PCNA antibody PC10 on cryostat sections.

In contrast to that in paraffin-embedded tissue, the reactivity of monoclonal PCNA antibody PC10 on cryostat sections requires a special fixation procedure as the target epitope is seemingly not accessible to its antibody. A panel of 18 fixation protocols was investigated. Chilled methanol or acetone, or PLP (paraformaldehyde-lysine-periodate) was found to be unsuitable for skin preparations. A two-step fixation protocol was developed for normal skin and basal cell carcinomas. They were fixed first in 3.4% buffered formaldehyde, followed by fixation in 2:1 v/v ethanol-acetic acid. Following this fixation regime, cryostat sections displayed the same PCNA/PC10 labelling pattern as paraffin sections of formalin-fixed tissue.

Antibodies, Monoclonal↗
PubMed1990

[Emergency psychiatry and crisis intervention in a primary clinic].

The terms Notfall and Krise, and the semantic problems arising, are elucidated; and an analysis of one years work in provision for emergency psychiatry and stress intervention is presented. Psychoreactive syndromes were found to be most common, followed in second place by psychotic conditions. In third place come disorders in connection with alcohol, which display a rising tendency. 40% of the clinic's beds are occupied by acute emergency cases, chiefly of short duration. Emergency provision is thus shown to be a major feature in the work of psychiatric clinics.

Adjustment Disorders↗
PubMed1987

[Invalid status in neurologic diseases].

Authors analysed causes of invalidity in neuropsychiatric diseases within a single district. The share of neurological complaints amounts to 24%. Multiple sclerosis and epilepsy are the most important classes of syndromes. The results was compared with data known by pertinent literature. Demands appearing relevant for expert valuation of that kind of diseases are referred.

Adult↗
PubMed1977

[The meningoencephalitis syndrome in brain tumor].

In an evaluation of the medical records of 765 patients with brain tumours treated since 1951 in our clinic we selected those cases where there was a pleocytosis in the cerebrospinal fluid of more than 15/3 cells. We were interested to know whether a connection which would help diagnosis could be made between the occurrence and the degree of pleocytosis, the biological valence and the localisation of the tumour. In 181 cases (24%) there were more than 15/3 cells. Therefore, no conclusions about biological valence and tumour localisation could be drawn from the aspect of the cell picture which we observed and from the degree of pleocytosis. Basically, the occurrence of pleocytoses was more frequent in the case of malignant tumours and those tumours associated with the fluid canal system (plexus papillomata, ependymomata, craniopharyngeomata). Problems of unspecific meningeal irritative syndromes are being discussed in connection with brain tumours. These are being clarified on the basis of selected cases.

Astrocytoma↗