Search PubMed⌕ Search

Biomedical subjects

S George

Publications and source records attributed to S George.

At least 289 records · Page 16Linked to original sources
PubMed1981

Profile of alcoholism in a multiracial society.

Demographic characteristics of all patients with a diagnosis of alcoholism or alcoholic psychoses admitted between 1975 and 1978 to the Psychiatry Department, General Hospital, Kuala Lumpur, were examined. The diagnosis of alcoholism or alcoholic psychoses accounted for 2% of the total psychiatric admissions. Males greatly predominated over females and Indians greatly predominated over Malays and Chinese. Reasons for these differences are discussed.

Adult↗
PubMed1981

Talking pictures.

Explore the source record for details and available documents.

Medical Illustration↗
PubMed1980

A battered wife.

Explore the source record for details and available documents.

Adult↗
PubMed1979

Topography of a flexible ribonucleoprotein helix: protein-protein contacts in Sendai virus nucleocapsids.

Contacts among the three polypeptide species in the flexible helical nucleocapsids of a paramyxovirus were examined with bifunctional protein cross-linking reagents. Polypeptides L and P, minor components of Sendai virus nucleocapsids implicated in viral RNA polymerase activity, were efficiently cross-linked into large complexes, indicating that they enjoy abundant contacts with neighboring protein molecules in the helix. Less reactivity was found in the case of the major structural polypeptide, NP; about half of all molecules of NP formed large cross-linked complexes, most of the rest remaining as monomers along with a small proportion of homodimers and low-order oligomers. Marked heterogeneity in the cross-linking reactivity of NP molecules, which may reflect the conformational quasi-equivalence inherent in a flexible helix, was indicated by the production of several conformers of homodimers and other low-order oligomers of NP, and by failure of the kinetics of NP cross-linking to conform to a simple statistical model of random polmerization. The validity of the statistical model was shown by cross-linking experiments with the rigid helical virus, tobacco mosaic virus.

Capsid↗
PubMed1979

Phase II study demonstrating failure of both a five-drug continuous-therapy regimen and a two-drug pulse-therapy regimen in the treatment of metastatic neuroblastoma: Southwest Oncology Group Study 822.

Twenty-six children greater than 1 year of age with previously untreated stage IV neuroblastoma were randomized to receive either a five-drug regimen (prednisone, cyclophosphamide, actinomycin D, vincristine, and daunorubicin) or a two-drug regimen (cyclophosphamide and vincristine). Complete response rates were 6% and 9% for the five-drug and the two-drug regimens respectively. Partial response rates were 13% and 27% for the five-drug and the two-drug regimens respectively. The mean duration of the seven responses was 9 months, and all 26 patients had died within 2 years. Neither regimen was effective for long-term disease control in these children with neuroblastoma.

Antineoplastic Agents↗
PubMed1978

Metabolic effects of clofibrate in insulin-dependent ketosis-prone diabetic man.

This study examined the effects of clofibrate therapy on basal plasma substrate and hormone concentrations in ketosis-prone insulin-dependent diabetic man. A double-blind crossover design was utilized during a 3-mo period in which clofibrate treatment (1 g b.i.d.) was compared to that of a lactose placebo (1 g b.i.d.). Our results demonstrate that clofibrate treatment resulted in a significant reduction in the concentration of plasma glucose, ketone bodies, free fatty acids, triglyceride, and cholesterol in diabetic man. These beneficial effects were observed without demonstrable changes in circulating concentrations of insulin and glucagon. These observations suggest that in ketosis-prone diabetic man, clofibrate therapy may provide an adjunct to exogenous insulin administration.

Adult↗
PubMed1978

Combination chemotherapy for osteosarcoma.

Because of the great risk for development of pulmonary metastases following amputation for osteosarcoma, 24 consecutive patients with "clinically localized" osteosarcoma of an extremity were given adjuvant combination chemotherapy with adriamycin-cyclophosphamide-high-dose methotrexate-citrovorum factor. Thirteen of these patients remain free of tumor from 11 to 48 months following amputation. The median disease-free survival is estimated to be 18 months and the median survival 27 months. No relapses have been observed in any patients surviving free of disease beyond 23 months. Combination chemotherapy was also given to 16 patients whose disease was not localized; eight with pulmonary metastases at or following diagnosis, one with nodal metastases at diagnosis, two with osteosarcoma following radiation therapy for other malignant tumors, three with osteosarcoma of flat bones, one with parosteal osteosarcoma, and one with multifocal osteosarcoma. Three of this latter group of patients are surviving free of tumor at 8, 17, and 19 months from diagnosis. Two young patients died from complications of methotrexate and adriamycin toxicity.

Adolescent↗
PubMed1977

Pretreatment cytokinetic studies in 94 children with acute leukemia. Relationship to other variables at diagnosis and to outcome of standard treatment.

The relationship of the pretreatment bone marrow mitotic index (MI) and in vitro 3H-thymidine labeling index (LI) to other variables present at diagnosis and to the outcome of standard therapy was examined in a series of 94 children with acute leukemia (71 ALL, 23 AML). The range of observed values at diagnosis was extremely broad, from less than 1% labeled cells to more than 25%. The median LI% for all patients studied was 5.2%; the median MI% was 0.3%. The values for AML and ALL did not differ significantly despite older age, higher initial white blood cell (WBC) counts, and poorer response to therapy of AML patients. The initial MI and LI were positively correlated with each other, but unrelated to age or initial WBC count in either ALL or AML. However, the LI and MI were significantly higher (p less than 0.01) in the group of 10 children of 54 studied with ALL whose blasts formed spontaneous rosettes with sheep red blood cells at 37 degrees C. The initial LI and MI were not shown to be related to the likelihood of attaining a complete response or to the length of remission in either ALL or AML. There was thus no evidence that either the initial MI or LI% of marrow blasts was of any prognostic significance in children with acute leukemia.

Age Factors↗
PubMed1976

Evaluation of dose and schedule of L-asparaginase in multidrug therapy of childhood leukemia.

Six regimens utilizing L-asparaginase in doses of 6,000 IU/M2, 2,000 IU/M2, and 500 IU/M2 in two separate schedules (consecutive and intermittent) along with vincristine and prednisone yielded remarkably similar response rates, approximating 70%, in 306 previously treated children with acute leukemia in relapse. The addition of daunorubicin to one regimen did not alter the response rate. Hypersensitivity reactions occurred in 5% and hyperglycemia in 7%. Lower doses of L-asparaginase significantly reduced the hypersensitivity rate but no such pattern was noted for hyperglycemia. A history of prior resistance to prednisone and vincristine significantly reduced the response rate.

Acute Disease↗
PubMed1976

Metabolism of 3-(hydroxymethyl)-8-methoxychromone in the rat. II. Classification and identification of urinary drug metabolites.

1. Five metabolites were isolated from the urine of dogs dosed with 3-(hydroxymethyl)-8-methoxy[4-14C]chromone. These were identified as 8-methoxychromone, 2-hydroxy-3-methoxyacetophenone, 3-(hydroxymethyl)-8-hydroxychromone, 8-hydroxychromone and 2,3-dihydroxyacetophenone. 2. These compounds were also present in the urine of rats treated with labelled drug, together with unchanged drug and two intermediate metabolites, 3-carboxy-8-methoxychromone and 3-(carboxymethyl)-8-hydroxychromone. 3. In addition to the unconjugated labelled compounds, glucuronides and sulphates were identified. 4. Quantitative data were obtained for all of the 20 labelled compounds in rat urine. 5. A scheme is presented for the biotransformation of 3-(hydroxymethyl)-8-methoxychromone in rats and dogs, and a mechanism for scission of the gamma-pyrone ring is suggested.

Animals↗