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C Presant

Publications and source records attributed to C Presant.

8 recordsLinked to original sources
PubMed1991

OKT-3/cyclophosphamide up-regulation of peripheral blood killer-lymphocyte subsets in human cancer patients.

We have initiated a clinical trial in 7 patients using low-dose OKT-3 monoclonal antibody, 50 mcg, followed 24 hours later by low-dose cyclophosphamide, 300 mg/m2. Complete data in 5 patients indicate a significant up-regulation of the number of peripheral blood lymphocytes. Before treatment, the mean (+/- standard deviation) total lymphocyte count was 524 (+/- 364)/mm3. After 4 weeks the value rose 64% to 860 (+/- 243)/mm3, (P less than .025, Student's t test). Similar changes were observed for the CD3+, CD4+, CD8+, and CD16+ (NK) lymphocyte subsets. The mean CD3+ population rose from 372 (+/- 325)/mm3 to 593 (+/- 300)/mm3 (P less than .025), the mean CD4+ group rose from 209 (+/- 142)/mm3 to 321 (+/- 104)/mm3 (P less than .05), the CD8+ cells rose from 218 (+/- 205)/mm3 to 341 (+/- 197)/mm3 (P less than .05), and the CD16+ (NK cells) rose from 80 (+/- 37)/mm3 to 157 (+/- 63)/mm3 (P less than .025). Statistically significant up-regulation occurred for all patients. The fraction of each lymphocyte subset and the T4/T8 ratio did not change. OKT-3/cyclophosphamide appears to modulate the number of circulating lymphocytes in human cancer patients.

Adult↗
PubMed1986

Increased T-helper lymphocytes following active specific intralymphatic immunotherapy of cancer.

Sixteen malignant cancer patients (seven melanoma, three colon, three lung, and three other) who received tumor vaccine therapy--14 autologous and two allogeneic--were studied for T-cell phenotyping changes. Blood samples were obtained prior to therapy, and also at various time intervals following the therapy. A consistent and reproducible elevation of T3 and T4 subsets, as tested on day 21 after the therapy, was observed in 12 patients. The mean percentages of T3 and T4 fractions before and after (21 days) the treatment were 63.8 versus 75.9% (p less than 0.002) and 44.4 versus 57.4% (p less than 0.001), respectively. Kinetic studies of absolute values of three melanoma patients also showed augmentation of T3 and T4 cells following each tumor vaccine. The lymphatic infusion of tumor vaccine did not cause any toxicity, particularly lymphadenopathy. We believe this is the first report demonstrating augmentation of T4 (helper/inducer) cells with tumor cell vaccine therapy.

Female↗
PubMed1985

A comparison of the antiemetic efficacy of prochlorperazine and metoclopramide for the treatment of cisplatin-induced emesis: a prospective, randomized, double-blind study.

This study compared high-dose metoclopramide and prochlorperazine for their antiemetic activities in the treatment of patients with solid tumors receiving cisplatin-based cancer chemotherapy, in a prospective, double-blind fashion. Sixty patients were entered in the study, and 28 patients on each regimen were evaluable. For regimen 1, metoclopramide was given intravenously (IV) over 15 minutes at a dose of 2 mg/kg 30 minutes before, 30 minutes after, and three hours after treatment with cisplatin. In regimen 2, prochlorperazine was given IV 30 minutes before and three hours after the cisplatin; a placebo was administered at 30 minutes after cisplatin. There was no statistically significant difference between the two regimens in their antiemetic efficacies during the first three hours. For emesis that occurred from three to 24 hours after administration of cisplatin, prochlorperazine was marginally superior. The median number of emeses in the metoclopramide regimen was 2.5 (range, 0 to 10+) compared to 1.0 (range, 0 to 10+) in the prochlorperazine regimen. This is not a significant difference. The overall incidence of adverse reactions was greater in the metoclopramide regimen, with drowsiness being the most common toxicity for both antiemetic programs. Thus, IV high-dose metoclopramide and prochlorperazine are similar and effective in the management of cisplatin-induced emesis. IV prochlorperazine at 20-mg dosage is surprisingly effective.

Adolescent↗
PubMed1979

Breast cancer.

Explore the source record for details and available documents.

Adenocarcinoma↗
PubMedDate not supplied

Cisplatin, vinblastine, and bleomycin in the treatment of metastatic melanoma: a phase II study of the Southeastern Cancer Study Group.

Fifty-one patients with metastatic melanoma were treated with cisplatin, vinblastine, and bleomycin. Of the 50 evaluable patients, 11 (22%) achieved an objective response, including three complete (6%) and eight partial (16%) responses. Four of the 11 responding patients had previously received dacarbazine; the remaining patients had received no prior chemotherapy. Responses were noted in cutaneous and lymph node sites as well as visceral metastases. However, with one exception, all responding patients with visceral involvement had lung metastases. Response durations were brief and toxicity was substantial. Nadir leukocyte counts less than 0.5 X 10(9)/L occurred in 28% of the patients. Debilitating neurotoxicity, primarily paralytic ileus, and severe nausea and emesis were experienced by 24% of the patients. The combination of cisplatin, vinblastine, and bleomycin is not sufficiently beneficial to warrant its use in metastatic melanoma.

Adult↗