PubMed Health⌕ Search

Biomedical subjects

C T Sibinga

Publications and source records attributed to C T Sibinga.

32 records · Page 2Linked to original sources
PubMed1984

Cyclophosphamide and VP 16-213 with autologous bone marrow transplantation. A dose escalation study.

In 13 patients with therapy-resistant solid tumors the feasibility of high-dose cyclophosphamide (7 g/m2) in combination with increasing doses of VP 16-213 with autologous bone marrow transplantation was studied. Dose-limiting extramedullary toxicity appeared to be mucositis and occurred after 2.5 g/m2. Two toxic deaths were observed in patients older than 55 yr. Responses were seen in eight out of nine evaluable patients. Two patients with ovarian cancer still have no signs of disease progression after 12+ months. High-dose cyclophosphamide (7 g/m2) can be combined with VP 16-213 1.5 g/m2 without important extramedullary toxicity. Age is probably a limiting factor for this kind of therapy.

Adult↗
PubMed1975

Platelet aggregability in relation to impaired consciousness after head injury.

ADP-induced platelet aggregation was studied for up to six weeks in 34 patients with head injuries. The patients were divided into three groups according to the degree of impaired consciousness assessed by a clinical coma scale, and change in platelet aggregation was related to the coma score. Platelet aggregation was markedly reduced in all eight patients dying within 24 hours of injury. All 17 patients who remained unconscious for four days or more showed decreased platelet aggregation up to nine days after admission, the most marked effect being on the second day. Platelet function in this group returned to normal within 16 days. Nine patients with only slightly impaired consciousness also showed subnormal platelet aggregation during the first few days with a return to normal by the fourth day. Platelet counts remained within normal limits in all groups. We suggest that during coma following head injury brainstem dysfunction induces neurohumoral changes in the blood which are responsible for a decrease in platelet function.

Adenosine Diphosphate↗
PubMed1975

Disseminated intravascular coagulation and head injury.

Blood coagulation tests were performed on admission to the hospital and on consecutive days after severe and moderate head injury in 34 patients. Platelet counts and fibrinogen were normal at admission and raised thereafter. The partial thromboplastin time was shortened at admission and lengthened in the following days. Fibrinolytic activity was enhanced at admission. The ethanol gelation test was negative in all patients during the post-traumatic time course. It was concluded that, in the first 24 hours after injury, activated coagulation was present after head injury. In contrast with data of other authors, disseminated intravascular coagulation did not occur in these series.

Blood Cell Count↗
PubMedDate not supplied

Risk of transmission of human immunodeficiency virus (HIV) by heat-treated factor VIII concentrates in patients with severe hemophilia A.

At the change from unheated to heat-treated Factor VIII concentrates for the treatment of hemophilia A, 17 severe adult hemophiliacs (mean monthly dose, 4927 IU) were evaluated prospectively for signs of infection with human immunodeficiency virus (HIV). Viral serology and lymphocyte subpopulations (OKT3, OKT4, and OKT8-positive cells) were examined monthly for 1 year. One patient seroconverted for HIV in the enzyme-linked immunoabsorbent assay but was positive on the Western blot analysis from the outset. There was a slight but significant increase in OKT4+ cells and OKT4/OKT8 ratio. These data suggest that heat-treated Factor VIII concentrates even when used in large amounts have a low risk of transmitting HIV.

Adolescent↗
PubMedDate not supplied

The additive effect of peripheral blood stem cells, harvested with low-dose cyclophosphamide, to autologous bone marrow reinfusion on hematopoietic reconstitution after ablative chemotherapy in breast cancer patients with localized disease.

The additive effect of peripheral blood stem cells (PBSCs) to autologous bone marrow transplantation (ABMT) on haematopoietic reconstitution, after ablative chemotherapy in patients with locally advanced breast cancer, was evaluated. Patients were treated with induction chemotherapy, followed by ablative chemotherapy consisting of mitoxantrone and thiotepa. Group I (n = 14) received ABMT and granulocyte macrophage-colony stimulating factor (GM-CSF), group II (n = 11) received ABMT, PBSCs and granulocyte-colony stimulating factor (G- CSF). PBSCs were harvested after a low-dose cyclophosphamide (750 mg/m2), followed by G-CSF. Stem cell harvest was routinely started 12 days after cyclophosphamide. Compared to group I, group II showed a significant reduction in the median number of days for leukocytes < 0.5 x 10(9)/L 4.5 days, leukocytes < 1.0 x 10(9) / l 5.5 days, platelets < 20 x 10(9)/ l 9 days and platelets < 40 x 10(9) / l 12.5 days. The median number of transfusions of platelets fell from 11.5 to 7 and of red blood cells from 8.5 to 6. The median hospitalisation duration declined from 40.5 to 30 days, fever above 38 degrees C with 7.5 days, fever above 38.5 degrees C with 4 days and antibiotic treatment with 8.5 days in group I versus group II. Improvement of haematological recovery, duration of fever and hospitalisation was observed by the addition of PBSCs, obtained after a relatively low-dose cyclophosphamide and G-CSF and stem cell pheresis on fixed days, to autologous bone marrow and growth factor in the period after ablative chemotherapy.

Adult↗