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- W2912582934 abstract "Methionine (MET) restriction (MR) has been shown to arrest cancer growth and sensitizes tumors to chemotherapy. MR total parenteral nutrition (MR TPN) with a chemotherapy-containing amino acid solution (“AO-90”) (lacking both MET and L-cysteine[CYS]) showed synergistic effects with 5-fluorouracil (5-FU) in tumor-bearing rats and in a Phase I clinical trial with gastrointestinal tract cancers compared to 5-FU in a MET-containing TPN. All gastric cancer patients underwent gastrectomy. Resected tumors in the AO-90 group showed significant reduction of cancer histologically, while almost no effect was seen in the control group. A Phase II clinical trial of dietary MR combined with cystemustine treatment for melanoma or glioma was carried out. Twenty-two patients (20 with metastatic melanoma and 2 with recurrent gloma) received a median of four cycles of the combination of a 1-day MR diet with cystemustine (60 mg/m2) every 2 weeks. This combination was well tolerated (toxicity and nutritional status). The median disease-free survival was 1.8 months and the median survival was 4.6 months, with two long-duration stabilizations. MET depletion in plasma was 40%. In another study, eight patients with a variety of metastatic solid tumors were enrolled in a Phase I clinical trial of a commercially available MR medical food. Participants remained on the experimental diet for an average of 17.3 weeks. Plasma methionine levels fell from 21.6 to 9 μm within 2 weeks, a 58% decline. The only side effect was weight loss of approximately 0.5 kg per week. A feasibility study combining dietary MR with a FOLFOX regimen in patients with metastatic colorectal cancer was carried out. The plasma MET concentration was reduced by dietary MR by 58% on the first day of the MR diet. Among the four patients evaluable for response, three experienced a partial response and one patient had disease stabilization. The results of the above-described clinical trials indicate the clinical potential of MR." @default.
- W2912582934 created "2019-02-21" @default.
- W2912582934 creator A5040819666 @default.
- W2912582934 date "2019-01-01" @default.
- W2912582934 modified "2023-09-27" @default.
- W2912582934 title "Clinical Studies of Methionine-Restricted Diets for Cancer Patients" @default.
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- W2912582934 doi "https://doi.org/10.1007/978-1-4939-8796-2_9" @default.
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