No abstract available.
Colorectal Neoplasms* ; Fluorouracil* ; Leucovorin*

No abstract available.
Colorectal Neoplasms* ; Fluorouracil* ; Leucovorin*

Hepatocellular carcinomas are one of the most common malignancies in the world. However, no effective therapeutic modality has been proven to prolong the survival of patients in an inoperable stage. The purpose of this study was to determine the response rate and the toxicities of a combination of pirarubicin, UFT and leucovorin in patients with non-embolizable hepatocellular carcinomas, or who had progressed during their transcatheter arterial chemoembolization treatment. MATERIALS AND METHODS: Of 23 patients with a hepatocellular carcinoma, 11 had progressed during a transcatheter arterial chemoembolization, with the other 12 being transcatheter arterial chemoembolization-naive. All the patients were treated with pirarubicin (70 mg/m2 i.v., day 1), UFT (350 mg/m2 P.O., day 1~21), and leucovorin (25 mg/m2 P.O., day 1~21). RESULTS: Twenty patients were able to be evaluated, with a partial response being achieved in four, giving an overall response rate of 20% (95% confidence interval, 7~44%). The median overall survival time was 6 months, and the median survival time of the transcatheter arterial chemoembolization-naive patients was significantly longer than that of those treated by transcatheter arterial chemoembolization (p=0.012). The most significant dose-limiting toxicity was leucopenia and thrombocytopenia. CONCLUSION: The combination of pirarubicin, UFT and leucovorin therapies showed marginal antitumor activity and significant toxicity in patients with non-embolizable or failed transcatheter arterial chemoembolization hepatocellular carcinomas.
Carcinoma, Hepatocellular* ; Drug Therapy* ; Humans ; Leucovorin* ; Thrombocytopenia

PURPOSE: The purpose of this study was to evaluate the clinicopathological significance of responders with metastatic colorectal cancer treated with oxaliplatin chemotherapy. METHODS: A total of 52 patients with unresectable metastatic colorectal cancer were enrolled for treatment between March 2000 and August 2005. Patients received first line chemotherapy consisted of oxaliplatin 85 mg/m2 or 130 mg/m2 as a 2-hour infusion on day 1, concurrently with leucovorin (LV) 20 mg/m2 as a bolus infusion on day 1~5, followed by continuous infusion of 5-fluorouracil (5-FU) 425 mg/m2 on day 1~5. This treatment was repeated in 2 or 3 week intervals. All responses were assessed after 4 cycles of therapy by independent radiologic experts and categorized into two groups: responder (major reduction of tumor) and non-responder group (no change or progression of the tumor. RESULTS: The response rate was 51.9 percent (27/52 patients). There were no significant differences in clinicopathologic parameters between two groups. The decrease of CEA value after chemotherapy was significantly more frequent in the responder group than in the non-responder group. CONCLUSIONS: We could not find any clinical differences between the two groups, but these results suggest that oxaliplatin chemotherapy has a beneficial effect on tumor shrinkage and serum CEA value can be an indicator for tumor response of oxaliplatin in advanced colorectal cancer.
Colorectal Neoplasms* ; Drug Therapy* ; Fluorouracil ; Humans ; Leucovorin

High-dose methotrexate (MTX) chemotherapy extends the duration of hospitalization and introduces the risks of serious complications related to delayed MTX excretion. The treatment of delayed MTX excretion is largely dependent on invasive measures such as hemodialysis because the clinical data regarding the efficacy or safety of carboxypetidase G2 is limited. We report here on the cases of two pediatric osteosarcoma patients with delayed MTX excretion and who were successfully managed using supportive measures. Potential life-threatening complications were prevented by administering high doses of leucovorin.
Child ; Hospitalization ; Humans ; Leucovorin ; Methotrexate ; Osteosarcoma ; Renal Dialysis

PURPOSE: We prospectively conducted a non-randomized phase II trial to evaluate the efficacy and safety of combination irinotecan, leucovorin (LV) and 5-fluorouracil (FU) as a first-line regimen for treating patients with previously untreated advanced colorectal cancer (CRC). MATERIALS AND METHODS: Twenty-six previously untreated patients with advanced, recurrent or metastatic CRC were enrolled in this study. The patients received either irinotecan 180 mg/m2 on day 1 with LV bolus of 200 mg/m2 and FU bolus of 400 mg/m2, and this was followed by FU continuous infusion of 600 mg/m2 on day 1 and day 2 (the FOLFIRI regimen), or they were treated with LV bolus of 400 mg/m2 and FU bolus of 400 mg/m2 followed by FU continuous infusion of 2,400 mg/m2 for 46 hours (the simplified FOLFIRI regimen), and these treatments were repeated every 2 weeks until disease progression. RESULTS: The objective response rate was 23.1% (6/26) respectively, for both treatments. The median time to progression was 5.3 months (range: 0.4~19.9), and the overall survival was 11.2 months (range: 0.5~52.3). The prognostic factor for longer survival was the Eastern Cooperative Oncology Group (ECOG) performance status (PS). The non-hematological toxicities were similar for both treatment groups, with more frequent grade > or =3 neutropenia being noted for the simplified FOLFIRI regimen. CONCLUSION: The biweekly irinotecan based regimen was demonstrated to have a moderate antitumor activity with acceptable toxicity profiles, and the ECOG PS was the independent prognostic factor.
Colorectal Neoplasms* ; Disease Progression ; Fluorouracil* ; Humans ; Leucovorin* ; Neutropenia ; Prospective Studies

BACKGROUND: Methotrexate (MTX) is an antifolate antagonist that is widely used for treating various malignancies and non-malignant diseases. MTX levels should be monitored when used in high concentration to determine when to start leucovorin rescue. In this study, we evaluated the analytical performance of the EMIT Methotrexate Assay on a 200FR NEO Chemistry Analyzer (Toshiba Medical System Co., Japan) and compared it with Viva-E Drug Testing System (Siemens Healthcare, Germany). METHODS: According to the Clinical Laboratory and Standards Institute (CLSI) Evaluation Protocol (EP) 5-A2, three concentrations of the Liquichek Therapeutic Drug Monitoring Control (Bio-Rad Laboratories, USA) were analyzed twice a day for 20 days to monitor assay precision. The 200FR NEO and Viva-E instruments were compared using 40 patients' sera, according to CLSI EP9-A2. The linearity and carry-over rate were also evaluated. RESULTS: Between-run CVs for low-, medium-, and high-level controls were 4.9%, 0.9%, and 2.0%, respectively, whereas between-day CVs for low-, medium-, and high-level controls were 8.1%, 1.3%, and 3.5%, respectively. In the linearity test, the coefficient of determination (R2) was 0.98 (0.06-1.92 micromol/L). In the comparison study, R2 was 0.955, showing good correlation between the 200FR NEO and Viva-E instruments. The carry-over rate was 0.9%. CONCLUSIONS: The EMIT assay showed good precision, linearity, and carry-over rate on the Toshiba 200FR. An excellent correlation was observed when comparing results obtained using the Toshiba and Viva-E instruments. In conclusion, the Syva EMIT MTX assay can be readily used for MTX monitoring on the Toshiba 200FR NEO.
Chemistry ; Delivery of Health Care ; Drug Monitoring ; Leucovorin ; Methotrexate*

Erythr odysesthesia syndrome is a. peculiar toxic reaction due to anti-cancer drug. lt is characterized by a painful, purple-colored patch on the palms and soles, and may form bullae. We report a case of erythrodysesthesia syndrome in a 46-year-old woman. 5-FU and leucovorin were administered for 5 days because of her colon cancer. Two weeks after anti-cancer therapy, purple-colored erosive patch appeared on the face, and 10 days later, purple-colored vesicular patches were seen on both palms and soles, accompanied with pain. Histopathologic examination reveals a severe epidermal necrosis. Individual keratinocyte shows cytologic atypia and apoptotic body.
Colonic Neoplasms ; Female ; Fluorouracil* ; Humans ; Keratinocytes ; Leucovorin ; Middle Aged ; Necrosis

BACKGROUND: Most patients with gastric cancer have metastatic disease at first diagnosis and need palliative chemotherapy. Unfortunately, the response duration of the first line chemotherapy is usually short and most patients need the second line therapy during their disease process. The action mechanism of continuous infusion of 5-FU is different from bolus 5-FU and we can expect that among patients who failed on bolus 5-FU, some patients will achieve response to infusional 5-FU. So, we planned to evaluate the efficacy and safety of leucovorin and infusional 5-FU as a second line regimen for the metastatic gastric cancer refractory to regimen containing bolus 5-FU. METHODS: Patients with recurred or metastatic gastric cancer unresponsive to regimen containing bolus 5-FU were entered into this study. The mixture of 5-FU 1,000 mg/m2/day and leucovorin 50 mg/m2/day was infused continuously for four days and this treatment was repeated by every three weeks. RESULTS: From March, 1996 to July 2001, 25 patients were enrolled in this study. One patient showed a partial remission, 9 stable disease and 15 progressive disease. The overall response rate was 4%. The median time to progression was 73 days and the median duration of overall survival was 140 days. Among total of 92 cycle chemotherapy, leukopenia, granulocytopenia and thrombocytopena of WHO grade 3 or 4 were observed in 7.6%, 12.0% and 14.1%, respectively. Stomatitis, nausea or vomiting of WHO grade 3 or 4 were 13.1%, 5.4%, respectively. Neutropenic infection occurred in two patients. CONCLUSION: The LF regimen was well tolerated with minimal toxicities and showed low effect as the second line chemotherapy for the patients with gastric cancer.
Agranulocytosis ; Diagnosis ; Drug Therapy ; Fluorouracil* ; Humans ; Leucovorin* ; Leukopenia ; Nausea ; Stomach ; Stomach Neoplasms* ; Stomatitis ; Vomiting

PURPOSE: Concurrent chemoradiation treatment (CCRT) for locally advanced rectal cancer is an important modality for curative resection, but its tumor response shows wide spectrum. The aim of study is to investigate any correlation between a related genetic mutations, proliferative index and tumor response after CCRT. METHODS: A twenty three patients with rectal cancer, which preoperatively staged as over T3N1 or T4 determined by transrectal ultrasonography and MRI. Enrolled patients were given 5 FU 450 mg/m2 and leucovorin 20 mg/m2 intravenously for 5 days during the first and fifth weeks of radiation therapy (45~54 Gy). 4 weeks after completion of scheduled treatment, surgical resection was performed. Tumor response was classified into CR (complete remission), PR (partial response: 50% of diminution of tumor volume and downstaging), NR (no response). Paraffin-embedded tissues obtained before chemoradiation treatment were studied with immunohistochemical staining of p53, Bcl-2 and Ki-67. The extent of tumor response was correlated with proliferative activity as measured by immunostaining of Ki-67 proliferative antigen and expression of p53 and bcl-2 oncoproteins (less than 10%: negative, 10~25%: , 25~50%: , more than 50%: , Ki-67: to count a labeled cells per 1,000 cells). RESULTS: All patients were resectable. CR was obtained in 4 (17.4%), PR in 10 (43.3%) and NR in 9 (39.2%). p53 mutation was noted in 16 (70%). p53 mutation was found in NR: 5 (31.3%), PR: 9 (56.2%), CR: 2 (12.5%), respectively. Bcl-2 expression was noted in 11 (48%). NR as in 4 (36.3%), PR: 3 (28.4%) and CR: 4 (36.3%), respectively. Ki-67 labeling index was NR: 615.4 446.2, PR: 663.2 296.4, CR: 765.5 188.3, respectively (CR PR Vs NR, p=0.029). CONCLUSIONS: Immunohistochemical Expression of p53 and bcl-2 does not correlate with tumor response after CCRT, but Ki-67 labeling may be useful parameters for good radiosensitive tumor selected for CCRT.
Humans ; Leucovorin ; Magnetic Resonance Imaging ; Oncogene Proteins ; Rectal Neoplasms* ; Tumor Burden ; Ultrasonography