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Effects of daily oral administration of quercetin chalcone and modified citrus pectin on implanted colon-25 tumor growth in Balb-c mice.
Altern Med Rev. 2000 Dec; 5(6):546-52.AM

Abstract

The health benefits of fruits and vegetables have been the subject of numerous investigations over many years. Two natural substances, quercetin (a flavonoid) and citrus pectin (a polysaccharide found in the cell wall of plants) are of particular interest to cancer researchers. Two modified versions of these substances - quercetin chalcone (QC) and a pH-modified citrus pectin (MCP) - are the focus of this study. Previous research has confirmed that quercetin exhibits antitumor properties, likely due to immune stimulation, free radical scavenging, alteration of the mitotic cycle in tumor cells, gene expression modification, anti-angiogenesis activity, or apoptosis induction, or a combination of these effects. MCP has inhibited metastases in animal studies of prostate cancer and melanoma. To date, no study has demonstrated a reduction in solid tumor growth with MCP, and there is no research into the antitumor effect of QC. This study examines the effects of MCP and QC on the size and weight of colon-25 tumors implanted in balb-c mice. Fifty mice were orally administered either 1 ml distilled water (controls), low-dose QC (0.8 mg/ml), high-dose QC (1.6 mg/ml), low-dose MCP (0. 8 mg/ml) or high-dose MCP (1.6 mg/ml) on a daily basis, beginning the first day of tumor palpation (usually eight days post-implantation). A significant reduction in tumor size was noted at day 20 in all groups compared to controls. The groups given low-dose QC and MCP had a 29-percent (NS) and 38-percent (p<0.02) decrease in size, respectively. The high-dose groups had an even more impressive reduction in size; 65 percent in the QC group and 70 percent in the mice given MCP (both p<0.001). This is the first evidence that MCP can reduce the growth of solid primary tumors, and the first research showing QC has antitumor activity. Additional research on these substances and their effect on human cancers is warranted.

Authors+Show Affiliations

Central Florida Community College, P.O. Box 1388, Ocala, FL 34478, USA. hayashia@cfcc.cc.fl.usNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

11134977

Citation

Hayashi, A, et al. "Effects of Daily Oral Administration of Quercetin Chalcone and Modified Citrus Pectin On Implanted Colon-25 Tumor Growth in Balb-c Mice." Alternative Medicine Review : a Journal of Clinical Therapeutic, vol. 5, no. 6, 2000, pp. 546-52.
Hayashi A, Gillen AC, Lott JR. Effects of daily oral administration of quercetin chalcone and modified citrus pectin on implanted colon-25 tumor growth in Balb-c mice. Altern Med Rev. 2000;5(6):546-52.
Hayashi, A., Gillen, A. C., & Lott, J. R. (2000). Effects of daily oral administration of quercetin chalcone and modified citrus pectin on implanted colon-25 tumor growth in Balb-c mice. Alternative Medicine Review : a Journal of Clinical Therapeutic, 5(6), 546-52.
Hayashi A, Gillen AC, Lott JR. Effects of Daily Oral Administration of Quercetin Chalcone and Modified Citrus Pectin On Implanted Colon-25 Tumor Growth in Balb-c Mice. Altern Med Rev. 2000;5(6):546-52. PubMed PMID: 11134977.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effects of daily oral administration of quercetin chalcone and modified citrus pectin on implanted colon-25 tumor growth in Balb-c mice. AU - Hayashi,A, AU - Gillen,A C, AU - Lott,J R, PY - 2001/1/3/pubmed PY - 2001/3/7/medline PY - 2001/1/3/entrez SP - 546 EP - 52 JF - Alternative medicine review : a journal of clinical therapeutic JO - Altern Med Rev VL - 5 IS - 6 N2 - The health benefits of fruits and vegetables have been the subject of numerous investigations over many years. Two natural substances, quercetin (a flavonoid) and citrus pectin (a polysaccharide found in the cell wall of plants) are of particular interest to cancer researchers. Two modified versions of these substances - quercetin chalcone (QC) and a pH-modified citrus pectin (MCP) - are the focus of this study. Previous research has confirmed that quercetin exhibits antitumor properties, likely due to immune stimulation, free radical scavenging, alteration of the mitotic cycle in tumor cells, gene expression modification, anti-angiogenesis activity, or apoptosis induction, or a combination of these effects. MCP has inhibited metastases in animal studies of prostate cancer and melanoma. To date, no study has demonstrated a reduction in solid tumor growth with MCP, and there is no research into the antitumor effect of QC. This study examines the effects of MCP and QC on the size and weight of colon-25 tumors implanted in balb-c mice. Fifty mice were orally administered either 1 ml distilled water (controls), low-dose QC (0.8 mg/ml), high-dose QC (1.6 mg/ml), low-dose MCP (0. 8 mg/ml) or high-dose MCP (1.6 mg/ml) on a daily basis, beginning the first day of tumor palpation (usually eight days post-implantation). A significant reduction in tumor size was noted at day 20 in all groups compared to controls. The groups given low-dose QC and MCP had a 29-percent (NS) and 38-percent (p<0.02) decrease in size, respectively. The high-dose groups had an even more impressive reduction in size; 65 percent in the QC group and 70 percent in the mice given MCP (both p<0.001). This is the first evidence that MCP can reduce the growth of solid primary tumors, and the first research showing QC has antitumor activity. Additional research on these substances and their effect on human cancers is warranted. SN - 1089-5159 UR - https://www.unboundmedicine.com/medline/citation/11134977/Effects_of_daily_oral_administration_of_quercetin_chalcone_and_modified_citrus_pectin_on_implanted_colon_25_tumor_growth_in_Balb_c_mice_ L2 - http://archive.foundationalmedicinereview.com/publications/5/6/546.pdf DB - PRIME DP - Unbound Medicine ER -