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Biomedical subjects

S Yamana

Publications and source records attributed to S Yamana.

At least 19 recordsLinked to original sources
PubMed1992

[Gold-induced severe cholestatic jaundice in rheumatoid arthritis patient and effect of repeated steroid pulse therapy].

A 32-year-old female with early stage of rheumatoid arthritis (RA) developed anorexia, pruritus, dark urine, pale stool and jaundice 3 weeks after initiation of chrysotherapy. She was administered a total of 35mg of gold sodium thiomalate (GST) intramuscularly and auranofin 6mg per day orally. Liver function tests and biopsy specimens showed severe cholestatic jaundice. Prednisolone 30mg per day and plasma exchange were started. No response however was obtained and the total bilirubin level gradually increased. Steroid pulse therapy, 1000mg methylprednisolone for successive 3 days as one therapy unit, was repeated 4 times. Liver functions were then gradually improved. Gold induced hepatotoxicity is a rare complication. We concluded that the hepatotoxicity in this case was caused by allergic reaction against GST and repeated steroid pulse therapy was very effective to these conditions.

Adult↗
PubMed1979

Purification of antilymphocyte antibody (ALA) from patients with systemic lupus erythematosus (SLE)-immunoabsorption and elution.

Purification of antilymphocyte antibody (ALA) from patients with systemic lupus erythematosus (SLE) was achieved by immunoabsorption and elution. Human tonsil cells or thymocytes were used as absorbents. Complement dependent microcytotoxicity tests showed that, in comparison to the parent sera, the eluate from tonsil cells was eight times, and that from thymocytes four times, more active. Antinuclear activity was eliminated by elution. The ALA was almost entirely IgM, IgG being involved in only a few cases. IgA lacked cytotoxic activity. ALA was directed at both T- and B-cell surface determinants, which suggests that, in SLE, it has a heterogeneous biological composition.

Adult↗
PubMed1978

Low responsiveness of synovial and peripheral blood lymphocytes stimulated by either PHA-P or CON-A in patients with chronic rheumatoid arthritis.

Lymphocytes were highly purified from synovial fluid and peripheral blood of 10 rheumatoid arthritis patients and assessed for responsiveness to PHA-P and Con-A. In all cases, both synovial and blood lymphocytes showed a marked reduction in response to these mitogens compared with normal blood lymphocytes. The factors responsible for this low T cell responsiveness are discussed.

Arthritis, Rheumatoid↗
PubMed1976

Scanning electron microscopy of myeloma cells.

The surface structure of myeloma cells was examined by scanning electron microscopy. The cells were collected from the pleural effusion of a multiple myeloma patient and purified by Conray-Ficoll gradient sedimentation. The cell size ranged from 8 mu to 12 mu in diameter and the microvilli were from 0.8 mu to 1.2 mu in length. The surfaces of the majority of the observed myeloma cells were more villous than lymphocytes.

Aged↗