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Biomedical subjects

C K Tebbi

Publications and source records attributed to C K Tebbi.

43 records · Page 3Linked to original sources
PubMed1982

Adolescent adjustment to amputation.

We investigated the psychological effects of amputation on adolescent patients by interviewing 27 persons who had a limb amputation because of cancer during their adolescence and compared them to data obtained from eight patients with amputations due to trauma at similar ages. In cancer patients, mobility-related activities and social matters including relations with peers and the opposite sex and self-consciousness were of paramount concern. All cancer patients considered themselves functionally independent and 67% had little or no concern for the future. While malignancy and amputation had a significant impact on the patients' lives, the vast majority had a positive view of life and 85% were found to have what we assessed as adequate overall adjustment. Individual variables examined included marital and child-bearing patterns, educational attainments, vocational attainments, perceived parental and peer support, adaptation to prosthesis, and variables relating to general outlook on life and psychological adjustment. Our results suggest that the patients who have had amputations due to malignancy differ from traumatic amputees in their adjustment to amputation, with cancer patients showing, in many instances, evidence of better adaptation to disability. This may in part be due to different backgrounds and social orientation of traumatic amputees. We found the majority of cancer amputees to adjust well to their circumstances and to report leading full and productive lives.

Adolescent↗
PubMed1982

North american Burkitt-type ALL with a variant translocation t(8;22).

A variant translocation, t(8;22) (q24;q12), was found in bone marrow (BM) and long-term cultured peripheral blood (PB) cells obtained from an American boy with Burkitt-type acute lymphoblastic leukemia (ALL-L3, French-American-British classification). Surface marker studies revealed a monoclonal immunoglobulin A (sIgA) with a lambda chain (74%) on the PB cells in a sample containing 74% blast cells. A table summarizing the cases with variant translocations in Burkitt diseases [Burkitt lymphoma (BL) and ALL-L3] is presented, and review of the published data indicates that, generally, the survival of patients with t(8;22)-type BL and ALL-L3 is short and comparable to that of patients with the more common translocation, t(8;14). There appears to be no relationship between t(2;8) or t(8;22) and a specific heavy-chain sIg. The karyotypes of the BM cells and those of the long-term cultured PB cells, though retaining t(8;22), differed from each other. Chromosomal analyses using cells from long-term culture may reveal karyotypic changes in addition to those seen on direct analysis. The key karyotypic anomaly in Burkitt-type diseases appears to be the breakage of chromosome #8 at band q24.

Burkitt Lymphoma↗
PubMed1980

The role of eosinophils in granulopoiesis. I. Eosinophilia in neutropenic patients.

The role of eosinophils in granulopoiesis is unclear. In a variety of conditions, the level of eosinophils is inversely related to the level of neutrophils. The present report describes two patients with eosinophilia and neutropenia and examines the in vitro effects of eosinophils on the colony formation of their bone marrow in semisolid culture medium. The addition of autologous eosinophils to bone marrow cultures from these patients resulted in a decrease in the number of colonies; in contrast, antieosinophilic serum increased the number of colony-forming units. Indomethacin, an inhibitor of prostaglandin, was capable of reversing the effects of added eosinophils. The findings suggest that eosinophils have an inhibitory effect on in vitro granulopoiesis. The suppressive effects may be due to the high content of prostaglandin E found in eosinophils. A schematic diagram based on the current knowledge of the mechanism of granulopoiesis is presented.

Aged↗
PubMed1979

Primary Ewing's sarcoma of the sternum: a case report.

A 12 1/2-year-old female presented with Ewing's sarcoma of the manubrium sterni which extended into the anterior mediastinum. At presentation there was no evidence of metastatic disease. Her initial treatment consisted of radiation therapy and chemotherapy. The residual tumor was subsequently resected and the sternal defect was repaired with Marlex mesh. Postoperatively, she was maintained on chemotherapy consisting of BCNU, cyclophosphamide, and adriamycin. The adriamycin was discontinued after she developed sterile fibrinous pericarditis. She remains free of her disease two years after diagnosis. Although extremely rare, Ewing's does occur in the sternum and this area is amenable to wide local resection without severe functional disability.

Bone Neoplasms↗
PubMedDate not supplied

The role of eosinophil in regulation of granulopoiesis.

An association between eosinophilia and neutropenia has been observed in a number of clinical conditions. To probe the role of eosinophils in granulopoiesis, marrow and peritoneal eosinophils, obtained from Schistosoma mansoni-infected mice, were separated and purified. Normal bone marrow cells were cultured in semi-solid culture medium in concentrations ranging from 5 X 10(4) to 5 X 10(5), with and without added eosinophils. To examine whether high prostaglandin E (PGE) content of eosinophils affects granulopoiesis, indomethacin was added to duplicate marrow cultures containing eosinophils. The addition of eosinophils to normal syngeneic marrow culture caused a significant inhibition of granulocyte-macrophage colony formation (CFU-GM) in culture. This suppressive effect was reversible upon addition of indomethacin. These findings suggest that eosinophils, in vitro, are capable of inhibition of granulopoiesis. The reversal of this effect by indomethacin indicates that this suppression may be prostaglandin mediated.

Alprostadil↗
PubMedDate not supplied

In vitro production of granulocyte-macrophage colony-stimulating activity by murine bone marrow and spleen following vinblastine administration in vivo.

The production of granulocyte-macrophage colony-stimulating activity (CSA) by isolated murine femur shafts, non-dispersed bone marrow and spleens was assessed following administration of Vinblastine (VLB). These organs were removed from 2 h to 10 days post-VLB and allowed to condition endotoxin-free medium for 48 h. CSA activity was assessed using a soft agar cloning system. The data demonstrate that CSA elaboration was maximal 24 h post-VLB, corresponding to the nadir of bone marrow GM-CFC, and 6 h after splenic reached a minimum. No relationship between peripheral blood granulocyte count or serum endotoxin levels were observed.

Animals↗