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aspartic acid/diarreia
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Phase I study of N-(phosphonacetyl)-L-aspartic acid (PALA).
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N-(Phosphonacetyl)-L-aspartic acid, an inhibitor of aspartate transcarbamylase, was administered to 25 patients with advanced cancer by 10-minute infusion daily x 5 consecutive days to determine the toxicity and to look for evidence of therapeutic effect. Planned dose escalations ranged from 100 to
Phase II evaluation of N-(phosphonacetyl)-L-aspartic acid (PALA) in metastatic adenocarcinoma of the colon or rectum.
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N-(Phosphonacetyl)-L-aspartic acid (PALA) was administered at a dose of 1.5 g/m2/day x 5 days in a phase II evaluation of 21 patients with metastatic adenocarcinoma of the colon or rectum. Courses were repeated every 3 weeks. No responses were seen, but 11 patients had disease stabilization. PALA
Initial clinical study with N-(phosphonacetyl)-L-aspartic acid (PALA) in patients with advanced cancer.
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Thirty-seven patients with inoperable malignancies were given 75 courses of N-(phosphonaceteyl)-L-aspartic acid (PALA). Twenty-seven of these patients received PALA as a continuous iv infusion over 24 hours at dose levels ranging from 500 to 10,500 mg/m2 of estimated body surface area. In addition,
Phase I-phase II trial of N-phosphonacetyl-L-aspartic acid given by intravenous infusion and 5-fluorouracil given by bolus injection.
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A phase I clinical trial of N-phosphonacetyl-L-aspartic acid (PALA) and 5-fluorouracil (FUra) was performed on 30 patients. PALA was given as a 15-minute iv infusion once daily for 5 days, and FUra was given as a bolus injection on days 2, 3, 4, and 5. Cycles of treatment were repeated every 3
Analysis of a pair of END+ and END- viruses derived from the same bovine viral diarrhea virus stock reveals the amino acid determinants in Npro responsible for inhibition of type I interferon production.
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The Exaltation of Newcastle disease virus (END) phenomenon is induced by the inhibition of type I interferon in pestivirus-infected cells in vitro, via proteasomal degradation of cellular interferon regulatory factor (IRF)-3 with the property of the viral autoprotease protein N(pro). Reportedly, the
Phase I trial of combination therapy of cancer with N-phosphonacetyl-L-aspartic acid and dipyridamole.
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While N-phosphonacetyl-L-aspartic acid (PALA), an inhibitor of de novo pyrimidine biosynthesis, demonstrated a unique spectrum of activity during preclinical drug evaluation, multiple clinical trials have shown it to possess minimal clinical activity. One explanation for the disappointing results is
NS3 serine protease of bovine viral diarrhea virus: characterization of active site residues, NS4A cofactor domain, and protease-cofactor interactions.
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The gene expression of bovine viral diarrhea virus (BVDV), a pestivirus, occurs via translation of a hypothetical polyprotein that is processed cotranslationally and posttranslationally by viral and cellular enzymes. A protease located in the N-terminal region of nonstructural (NS) protein NS3
Phase I trial of N-(Phosphonacetyl)-L-aspartic acid (PALA).
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N-(Phosphonacetyl)-L-aspartic acid (PALA) was given as a 5-day continuous infusion in a phase I trial. Dose-limiting toxic effects noted were diarrhea occurring at doses of greater than or equal to 6 g/m2/course, mucositis occurring at doses of greater than or equal to 7.5 g/m2/course, and skin rash
Phase I and clinical pharmacological evaluation of biochemical modulation of 5-fluorouracil with N-(phosphonacetyl)-L-aspartic acid.
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5-Fluorouracil (FUra) is a clinically useful antineoplastic agent. Preclinical studies suggest that the therapeutic effects of FUra can be enhanced by pretreatment with N-(phosphonacetyl)-L-aspartic acid (PALA), an inhibitor of aspartate transcarbamylase. The objective of treatment with PALA is to
Phase I study of high dose 5-fluorouracil and high dose Leucovorin with low dose phosphonacetyl-L-aspartic acid in patients with advanced malignancies.
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Twenty-eight patients with refractory advanced malignancies were treated with a 24 hr infusion of 5-fluorouracil (5-FU), Leucovorin (LV), and N-(phosphonacetyl)-L-aspartic acid (PALA) weekly. Twenty-seven patients were evaluable for the assessment of toxicity and anti-tumor activity. PALA was
A phase I, II study of high-dose 5-fluorouracil and high-dose leucovorin with low-dose phosphonacetyl-L-aspartic acid in patients with advanced malignancies.
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Twenty-eight patients with refractory advanced malignancies were treated with a 24-hour infusion of 5-fluorouracil (5-FU), leucovorin (LV), and N-(phosphonacetyl)-L-aspartic acid (PALA) weekly. Twenty-seven patients were evaluable to assess toxicity and antitumor activity. The PALA was administered
Sequential biochemical modulation of fluorouracil with folinic acid, N-phosphonacetyl-L-aspartic acid, and interferon alfa-2a in advanced colorectal cancer.
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OBJECTIVE
Several agents have been evaluated for their effect as biochemical modulators of fluorouracil (5-FU) in the treatment of metastatic colorectal carcinoma. In this study, we used folinic acid (FA), N-phosphonacetyl-L-aspartic acid (PALA), and recombinant interferon alfa-2a (IFNalpha-2a) in a
Fluorouracil modulation in colorectal cancer: lack of improvement with N -phosphonoacetyl- l -aspartic acid or oral leucovorin or interferon, but enhanced therapeutic index with weekly 24-hour infusion schedule--an Eastern Cooperative Oncology Group/Cancer and Leukemia Group B Study.
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OBJECTIVE
To investigate mechanism-directed regimens in maximizing the efficacy of fluorouracil (5-FU) in advanced colorected cancer.
METHODS
Based on promising phase II data, a randomized comparison of various methods for the biochemical modulation of 5-FU was undertaken in patients with advanced
Molecular epidemiology and genetic diversity of human parechoviruses in children hospitalized with acute diarrhea in Thailand during 2011-2016.
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Little is known about human parechovirus (HPeV) infection in Thailand. The genotype distribution of HPeV strains in children admitted to hospitals with acute gastroenteritis was investigated using polymerase chain reaction (PCR) and nucleotide sequencing of the VP1 region as the detection and
An overview of the clinical pharmacology of N-phosphonacetyl-L-aspartate (PALA), a new antimetabolite.
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N-Phosphonacetyl-L-aspartic acid (PALA) is new synthetic antimetabolite which inhibits de novo pyrimidine biosynthesis. Its significant activity against Lewis lung carcinoma, B16 melanoma, and glioma 26 suggested that it might be useful in the treatment of human solid tumors. Phase I trials revealed
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