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John L. Dart Library
Closed for Maintenance
Phone: (843) 722-7550
West Ashley Library
9 a.m. - 5 p.m.
Phone: (843) 766-6635
Folly Beach Library
9 a.m. - 2 p.m.
*open the 2nd and 4th Saturday
*open the 2nd and 4th Saturday
Phone: (843) 588-2001
Edgar Allan Poe/Sullivan's Island Library
Closed for renovations
Phone: (843) 883-3914
Wando Mount Pleasant Library
9 a.m. - 5 p.m.
Phone: (843) 805-6888
Village Library
9 a.m. - 1 p.m.
Phone: (843) 884-9741
St. Paul's/Hollywood Library
9 a.m. - 5 p.m.
Phone: (843) 889-3300
Otranto Road Library
9 a.m. - 5 p.m.
Phone: (843) 572-4094
Mt. Pleasant Library
9 a.m. – 5 p.m.
Phone: (843) 849-6161
McClellanville Library
9 a.m. – 1 p.m.
Phone: (843) 887-3699
Keith Summey North Charleston Library
9 a.m. - 5 p.m.
Phone: (843) 744-2489
John's Island Library
9 a.m. - 5 p.m.
Phone: (843) 559-1945
Hurd/St. Andrews Library
9 a.m. - 5 p.m.
Phone: (843) 766-2546
Miss Jane's Building (Edisto Library Temporary Location)
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Phone: (843) 869-2355
Dorchester Road Library
9 a.m. - 5 p.m.
Phone: (843) 552-6466
Baxter-Patrick James Island
9 a.m. - 5 p.m.
Phone: (843) 795-6679
Main Library
9 a.m. - 5 p.m.
Phone: (843) 805-6930
Bees Ferry West Ashley Library
9 a.m. - 5 p.m.
Phone: (843) 805-6892
Mobile Library
Closed
Phone: (843) 805-6909
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Is folic acid safe for non-muscle-invasive bladder cancer patients? An evidence-based cohort study.
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- Author(s): Tu, Huakang; Dinney, Colin P; Ye, Yuanqing; Grossman, H Barton; Lerner, Seth P; Wu, Xifeng
- Source:
American Journal of Clinical Nutrition; Feb2018, Vol. 107 Issue 2, p208-216, 9p, 3 Charts, 2 Graphs- Subject Terms:
- Source:
- Additional Information
- Abstract: Background: Patients with cancer are highly concerned about food choices and dietary supplements that may affect their treatment outcomes. Excess folic acid (synthetic folate) from supplements or fortification can lead to accumulation of unmetabolized folic acid in the systemic circulation and urine and may promote cancer growth, especially among those with neoplastic alterations. Objective:We investigated the prospective association between synthetic compared with natural folate intake and clinical outcomes in non-muscle-invasive bladder cancer (NMIBC), which is a highly recurrent disease. Design: In a cohort of 619 NMIBC patients, folate intake at diagnosis was assessed with a previously validated food-frequency questionnaire and categorized according to tertiles. After a median follow-up of 5.2 y, 303 tumor recurrence and 108 progression events were documented from medical record review. Multivariable Cox proportional hazards and logistic models were used to estimate adjusted HRs and ORs with 95% CIs. Results: Synthetic folic acid intake was positively associated with a risk of recurrence among NMIBC patients (medium compared with low intake--HR: 1.72; 95% CI: 1.20, 2.48; P = 0.003; high compared with low intake--HR: 1.80; 95% CI: 1.14, 2.84; P = 0.01). Patients with a higher folic acid intake were more likely to have multifocal tumors at diagnosis (medium or high compared with low-- OR: 2.08; 95% CI: 1.08, 4.02; P = 0.03). In contrast, natural folate intake tended to be inversely associated with the risk of progression (medium or high compared with low--HR: 0.68; 95% CI: 0.44, 1.04; P = 0.08). Conclusions: A high intake of synthetic folic acid, in contrast to the natural forms, is associated with an increased risk of recurrence in NMIBC and multifocal tumors at diagnosis, which suggests that folic acid may be unsafe for NMIBC patients. These findings provide some evidence for nutritional consultation with regard to folate intake among NMIBC patients. [ABSTRACT FROM AUTHOR]
- Abstract: Copyright of American Journal of Clinical Nutrition is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Abstract:
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