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Biomedical subjects

M Shingu

Publications and source records attributed to M Shingu.

At least 127 records · Page 7Linked to original sources
PubMed1979

Clinical features of acute coxsackie B viral myocarditis.

Clinical features of 11 patients of acute Coxsackie B viral myocarditis diagnosed by neutralizing antibody titers were reported. All patients had a flu-like symptom and 8 patients had fever. Initial cardiac manifestations were congestive heart failure in 9 patients, and syncopal attack in 4 patients. Electrocardiographic abnormalities frequently observed were non-specific ST-T changes, low voltage, and intraventricular conduction, disturbances including 4 patients of complete A-V block due to trifascicular block. Ten patients had a rise of serum enzymes. It seemed that in severe patients the serum enzymes rose markedly. From the analysis of laboratory and histological findings. Coxsackie B viral myocarditis were often complicated by hepatitis.

Adolescent↗
PubMedDate not supplied

Refolding and purification of human papillomavirus type 16 E7-lacZ fusion protein expressed in Escherichia coli.

Human papillomavirus (HPV) type 16 E7-lacZ fusion protein was produced in Escherichia coli, extracted as inclusion bodies, refolded with reducing reagents, and subjected to gel filtration. The refolded protein was purified by ion-exchange column chromatography, resulting in a single band on sodium dodecyl sulfate-polyacrylamide gel electrophoresis. 1H nuclear magnetic resonance spectral changes were observed in the high field methyl region in the presence of Zn2+ ion, suggesting that the refolded form of the fusion protein is possibly renaturated into the putative zinc finger motif (C. Edmond and K. H. Vousden, 1989, J. Virol. 63, 2650-2656) and supporting the data of J. A. Rawls, R. Pusztai, and M. Green (1990, J. Virol. 64, 6121-6129) on zinc binding to E7 protein using radioisotopically labeled zinc ion.

Amino Acid Sequence↗
PubMedDate not supplied

Clinical studies of polymyalgia rheumatica. A proposal of diagnostic criteria.

A differential diagnosis of polymyalgia rheumatica (PMR) and rheumatoid arthritis (RA) can be difficult in elderly patients, especially at the prodromal phase of RA. Furthermore, it was felt that there might be a diagnostic criteria for PMR specific to the Japanese. Accordingly, we have retrospectively studied the PMR patients who had come to our hospital, for making a diagnostic criteria. We especially stressed the distinguishing of PMR from RA in elderly patients. The criteria proposed are as follows: 1. Bilateral muscular pain persisting for 2 weeks at least in more than two of the following areas; neck, shoulders or shoulder girdle, upper arms, hips or pelvic girdle and thighs. 2. Normal serum myogenic enzymes. 3. ESR of more than 40 mm/h. 4. No swelling in the hand joints. PMR is defined by the presence of all of the 4 items. The criteria demonstrated a 93.1% sensitivity and 98.3% specificity for PMR.

Adult↗
PubMedDate not supplied

Sjögren's syndrome and mixed connective tissue disease.

We investigated the clinical significance of the close association of Sjögren's syndrome (SS) with mixed connective tissue disease (MCTD) by analyzing the clinical manifestations, sialographic findings and immunological parameters of MCTD and primary SS. The prevalence of sialectasia or SS in MCTD was significantly higher than in any other connective tissue diseases. The prevalence of Raynaud's phenomenon, swollen fingers, arthralgias, lymphadenopathy, sclerodactyly, muscle weakness, fever and erythema was significantly higher in MCTD than in primary SS. There were no significant differences between these manifestations in MCTD patients with sialectasia or SS, and those in MCTD patients without sialectasia or SS. Although the levels or prevalence of the erythrocyte sedimentation rate, CRP, antinuclear factor, anti-DNA antibody and anti-RNP antibody were significantly greater in MCTD than in primary SS, there were no significant differences in the levels or the prevalence of laboratory abnormalities between MCTD with sialectasia or SS, and MCTD without sialectasia or SS. Moreover, there was a strict dissociation between the occurrence of anti-RNP antibody and anti-SS-B antibody both in MCTD and primary SS. These results suggest that the association of secondary SS or sialectasia in MCTD, although more common than in other connective tissue diseases, is merely a consequence of MCTD and does not influence the clinical course of MCTD.

Adult↗
PubMedDate not supplied

Correlation of metal-binding proteins and proteinase inhibitors with immunological parameters in rheumatoid synovial fluids.

Metal-binding proteins (ceruloplasmin, transferrin, ferritin, and lactoferrin), proteinase inhibitors (alpha 1-antitrypsin, alpha 2-macroglobulin and inter-alpha-trypsin inhibitors), and albumin were assayed in synovial fluid obtained from 20 patients with rheumatoid arthritis (RA) and 15 with osteoarthritis (OA). The levels of proteinase inhibitors and metal-binding proteins, except transferrin, were significantly increased in synovial fluid from RA patients as compared with synovial fluid from OA patients. Metal-binding proteins significantly correlated with rheumatoid factor and immune complexes in synovial fluid from RA patients. Proteinase inhibitor levels also significantly correlated with C-reactive protein, and complement components. These results suggest that the raised level of metal-binding proteins and proteinase inhibitors in synovial fluid from RA patients reflect inflammatory activity, and hence may play an important role in the pathogenesis of inflammatory joint diseases.

Adult↗
PubMedDate not supplied

The effect of recombinant tumor necrosis factor-alpha on superoxide and metalloproteinase production by synovial cells and chondrocytes.

We studied the effect of recombinant tumor necrosis factor-alpha (rTNF-alpha) on the production of superoxide and metalloproteinase by rheumatoid synovial cells or osteoarthritis chondrocytes. rTNF-alpha significantly inhibited superoxide generation by osteoarthritis chondrocytes and rheumatoid synovial cells at a concentration of 23 U/ml. On the other hand, rTNF-alpha at a concentration of 1500 U/ml significantly enhanced superoxide production by rheumatoid synovial cells, osteoarthritis synovial cells and osteoarthritis chondrocytes, respectively. Metalloproteinase released by rheumatoid synovial cells and chondrocytes derived from osteoarthritis patients were stimulated by rTNF-alpha at a concentration of 94 U/ml. rTNF-alpha at the highest concentration (15000 U/ml) significantly inhibited metalloproteinase release by rheumatoid synovial cells. The enhancing effect of rTNF-alpha at higher concentrations on superoxide production by rheumatoid synovial cells and osteoarthritis chondrocytes was time dependent. These results suggest that rTNF-alpha has a biphasic effect on superoxide and metalloproteinase production, and hence may play an important role in the pathogenesis of inflammatory joint diseases.

Arthritis, Rheumatoid↗