Cachexia is a common cancer complication and is associated with weight loss and anorexia. In this study, we investigated the ameliorating effects of cystine and theanine on cancer cachexia using a mouse model. In mice carrying the colon cancer cell line C-26, there was a suppression of body weight increase and reduction in both internal fat and lower limb muscles. Repeated cystine and theanine administration significantly prevented weight loss, internal fat loss, lower limb muscle loss, and serum IL-6 increase in the cachexia model. These results suggested that cystine and theanine may be effective in ameliorating cancer cachexia.
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http://dx.doi.org/10.1016/j.jphs.2023.04.008 | DOI Listing |
Int J Mol Sci
December 2024
Department of Molecular Pathology, Nara Medical University School of Medicine, Kashihara 634-8521, Japan.
Cancer sarcopenia is highly prevalent in patients with advanced cancer, which is closely related to the disease prognosis. Overcoming cancer sarcopenia is important for cancer treatment. Cystine and theanine (CT), antioxidant amino acids, have been applied to the nutritional intervention of various diseases but their effects remain unclear on cancer sarcopenia.
View Article and Find Full Text PDFSupport Care Cancer
June 2024
Department of Thoracic Oncology, Kobe Minimally Invasive Cancer Center, 8-5-1, Nakamati Minatojima, Chuo-Ku, Kobe, Hyogo, 650-0046, Japan.
Purpose: Although several potential radioprotectants have been explored, radiation esophagitis is still difficult to control. Further development of supportive therapies is required. Our purpose was to investigate the efficacy and safety of cystine and theanine for esophagitis in non-small cell lung cancer (NSCLC) patients undergoing chemoradiotherapy (CRT).
View Article and Find Full Text PDFJ Radiat Res
July 2023
Department of Tumor and Diagnostic Pathology, Atomic Bomb Disease Institute, Nagasaki University, 1-12-4 Sakamoto, Nagasaki, Nagasaki 852-8523, Japan.
Cystine and theanine (CT), an amino acid mixture, provides the substrates cysteine and glutamic acid that promote glutathione synthesis. We previously reported that CT pre-treatment significantly improved the acute survival rate and reduced acute radiation injury of the small intestine and bone marrow of rats after 5 Gy of total body X-ray irradiation. To examine the long-term effects of CT administration after irradiation, we investigated the effects of CT pre-treatment and pre- and post-treatment on the chronic survival rate and solid tumor (spleen, skin and subcutis, and thyroid) incidence after irradiation using 7-week-old male Wistar rats.
View Article and Find Full Text PDFJ Pharmacol Sci
July 2023
Department of Clinical Pharmacy and Pharmaceutical Care, Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan.
Cachexia is a common cancer complication and is associated with weight loss and anorexia. In this study, we investigated the ameliorating effects of cystine and theanine on cancer cachexia using a mouse model. In mice carrying the colon cancer cell line C-26, there was a suppression of body weight increase and reduction in both internal fat and lower limb muscles.
View Article and Find Full Text PDFBMJ Support Palliat Care
December 2022
Department of Pharmacology, All India Institute of Medical Sciences, Bhubaneswar, Orissa, India
Background: Hand-foot syndrome (HFS) is one of the most common toxicities experienced by patients receiving systemic chemotherapy agents such as capecitabine and multikinase inhibitors such as sorafenib. Several randomised controlled trials (RCTs) have investigated the efficacy and safety of prophylactic agents such as pyridoxine, celecoxib, urea cream and cystine/theanine in managing HFS. This network meta-analysis (NMA) evaluated data from high-quality trials to provide strong evidence in forming recommendations to prevent systemic cancer therapy-induced HFS.
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