The significance of pathological spontaneous activity in various myopathies.

OBJECTIVE: Pathological spontaneous activity (PSA) in electromyography (EMG) has not yet been systematically analysed in various types of myopathies. METHODS: 136 Patients with well-defined myopathies were retrospectively analysed for the presence of PSA in distal, proximal, and paravertebral muscles. PSA comprised fibrillations (fib)/positive sharp waves (PSW) and high frequency discharges (HFD; i.e., myotonic and complex repetitive discharges). RESULTS: fib/PSW occurred more frequently than HFD. HFD were rarely myotonic in nature. 50% and more patients presented with HFD in PROMM (80%), Pompe's disease (70%), matrin-3 myopathy (60%), sIBM (50%), CNM (50%), while far less than 50% of the patients showed RD in LGMD2I (21%), LGMD2A (17%), LGMD2B (17%), LGMD2L (14%), FSHD (4%), BMD (0%). Four different HFD patterns were proposed. CONCLUSION: The segregation of myopathies relative to the occurrence of PSA and especially HFD in a high prevalence group and in a low prevalence group may be diagnostically valuable. SIGNIFICANCE: The screening for HFD by means of EMG is also valuable in the diagnosis of non-myotonic myopathies.

First evaluation of the Joint Clinical Registries of the Coordinating Tumor Center of Berlin.

In the present study, we report the first analysis of the clinical management [corrected] of patients with primary ovarian cancer following the summarized data of the Joint Clinical Registries of the Coordinating Tumor Center of Berlin (Dachverband Tumorzentrum Berlin e.V.). All data were summarized for the period of 2005 to 2008 regarding age, histopathology, time of surgical intervention, follow-up and survival, based on 1124 provided data sets of patients with suspected ovarian tumours. We identified 946 patients with a diagnosis of primary ovarian cancer, mostly of advanced T3 tumour stage (63.7%), FIGO III and IV stage (40.6%) or grade II and III (91%) histology. The median age at time of diagnosis was 61 years (range 15 to 94 years). Most patients (n=414, 69.8%) underwent cytoreductive surgery within one month of diagnosis. The median follow-up period was 26 months; 241 patients died in the analyzed period. The calculated 3-year survival rate was 63.3%, although the median overall survival has not yet been reached. We detected positive correlation of tumour stage (p<0.001) and of FIGO stage (p<0.001) with survival, and these were evaluated as being prognostically significant. The implementation of institutional based clinical registries as part of the modern clinical management of patients with ovarian cancer is feasible and well accepted inside the gynaecological departments of Berlin.

Decreased intramolecular turnover of L-fucose in membrane glycoproteins of rat liver during liver regeneration.

In plasma membrane glycoproteins of rat liver L-fucose undergoes a rapid intramolecular turnover in that fucose residues are removed from the glycoproteins (Tauber, R., Park, C.S. & Reutter, W. (1983) Proc. Natl. Acad. Sci. U.S.A. 80, 4026-4029). The present paper demonstrates that the intramolecular turnover of L-fucose is markedly decreased during liver regeneration. Turnover half-lives of L-fucose were measured in regenerating liver by pulse-chase experiments in five plasma membrane glycoproteins (Mr 60,000 (gp60), 80,000 (gp80), 120,000 (gp120), 140,000 (gp140), and 160,000 (gp160). The glycoproteins were isolated from plasma membranes by concanavalin A-Sepharose affinity chromatography and semipreparative NaDodSO4 polyacrylamide gel electrophoresis. L-Fucose turned over in the five glycoproteins with heterogeneous half-lives ranging from 22 h (gp160) to 49 h (gp120). The protein moieties of the glycoproteins were degraded with half-lives ranging from 56 h (gp80) to 107 h (gp140). Relative to the half-life of the protein backbone the half-live of L-fucose was increased in the five membrane glycoproteins by 70% (gp60), 150% (gp80), 182% (gp120), 60% (gp140) and 16% (gp160) during liver regeneration when compared to normal liver. The data show that L-fucose turns over in different membrane glycoproteins with individual rates, and that loss of L-fucose from plasma membrane glycoproteins is reduced in rapidly proliferating liver after partial hepatectomy.