Vitamin E in onoxaliplatin-induced neuropathy prevention
Ontology highlight
ABSTRACT:
DISEASE(S): Drug-induced Polyneuropathy,Malignant Neoplasm Of Rectosigmoid Junction,Condition 1: Cancer Of Colorectal. Condition 2: Pripheral Neuropathy
PROVIDER: 2485714 | ecrin-mdr-crc |
REPOSITORIES: ECRIN MDR
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Project description:Peripheral whole blood transcriptome profiles of pregnant women enrolled in the “Vitamin D Antenatal Asthma Reduction Trial” (VDAART) at enrollment during early pregnancy, and again at 32-38 weeks of gestation. Mothers were enrolled in 2 treatment groups: Intervention group with 4400 IU vitamin D supplementation and Control group with 400 IU vitamin D supplementation. Comparing the whole blood (PAXgene) transcriptome profile of 30 mothers at enrollment during early pregnancy versus their matching individual profile at 32-38 weeks of gestation.
2017-02-09 | GSE86200 | GEO
Project description:85 radical prostatectomy specimens (where 16 samples are in Placebo group (PL), 15 are in Selenium group (SE), 25 are in Vitamin E group (VE) and 27 are in Vitamin E & Selenium group (VS.Treatment groups: l-selenomethionine, 400 ug + placebo (vitamin E); vitamin E, 400 IU + placebo (l-selenomethionine); l-selenomethionine, 400 ug + vitamin E, 400 IU; placebos) were subjected to laser capture microdissection to isolate prostate cancer cells, normal epithelial prostatic cells, or stroma cells. RNA extraction and amplification were performed. Transcription profiling was conducted using the HG-U133A Affymetrix arrays.
2008-07-01 | E-MEXP-1327 | biostudies-arrayexpress
Project description:Interventions: Daily use of supplements containing vitamin D (1,200 IU) and calcium (400 mg)
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Primary outcome(s): Reccurrence rate of colorectal tumor (adenoma or cancer) on endoscopic examination at 24 to 28 month or earlier.
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Project description:Flavonoids and fish oils have anti-inflammatory and immune-modulating influences. The purpose of the study was to determine if a mixed flavonoid-fish oil supplement (Q-Mix; 1000 mg quercetin, 400 mg isoquercetin, 120 mg EGCG from green tea extract, 220 mg EPA and 180 mg DHA from fish oil, 1000 mg vitamin C, 40 mg niacinamide, and 800 ug folic acid) would reduce inflammatory and oxidative stress markers and alter genomic profiles in overweight women. Women were assigned using a randomized double-blinded placebo-controlled trial to Q-Mix or placebo groups. Overnight fasted blood samples were collected and subjected to RNA expression analysis on Affymetrix Hugene ST1_1 arrays. Randomized, double-blinded, placebo controlled study.Subjects were randomized to either mixed flavonoid-fish oil supplement group (Q-Mix; 1000 mg quercetin, 400 mg isoquercetin, 120 mg EGCG from green tea extract, 400 mg n3-PUFAs (220 mg EPA and 180 mg DHA) from fish oil, 1000 mg vitamin C, 40 mg niacinamide, and 800 µg folic acid) or placebo (n=29 samples, including pre- and post-treatment samples in the Q-Mix and placebo arms).The placebo did not contain quercetin, vitamin C, and niacin. Subjects were instructed to ingest two soft chew supplements twice daily (upon awakening, and between 6:00-7:00 pm) for 70 days. A three-day food record was used to assess typical energy and nutrient intake. No restrictions were placed on diet, supplement usage or medications with the exception that subjects agreed to avoid any non-steroidal anti-inflammatory drugs and dietary supplements that influence inflammation or oxidative stress.
2015-11-02 | E-GEOD-74560 | biostudies-arrayexpress
Project description:The fertility of dairy cows is challenged during early lactation and better nutritional strategies need to be developed to address this issue. Combined supplementation of folic acid and vitamin B12 improves energy metabolism in the dairy cow during early lactation. Therefore, the present study was undertaken to explore the effects of this supplement on gene expression in granulosa cells from the dominant follicle during the postpartum period. Multiparous Holstein cows received weekly intramuscular injection of 320 mg folic acid and 10 mg vitamin B12 (treated group) beginning 24 (SD 4) d before calving until 56 d after calving, whereas the control group received saline. The urea plasma concentration was significantly decreased during the pre-calving period, and the concentration of both folate and vitamin B12 were increased in treated animals. Milk production and dry matter intake were not significantly different between the two groups. Plasma concentrations of folates and vitamin B12 were increased in vitamin-treated animals. Daily dry matter intake was not significantly different between the 2 groups before (13.5 kg SE 0.5) and after (23.6 kg SE 0.9) calving. Average energy-corrected milk tended to be greater in vitamin-treated cows, 39.7 (SE 1.4) and 38.1 (SE 1.3) kg/d for treated and control cows, respectively. After calving, average plasma concentration of BHBA tended to be lower in cows injected with the vitamin supplement, 0.47 (SE 0.04) vs. 0.55 (SE 0.03) for treated and control cows, respectively. The ovarian follicle ? 12 mm in diameter was collected by ovarian pick-up after estrus synchronization. Recovered follicular fluid volumes were greater in the vitamin-treated group. A microarray platform was used to investigate the impact of treatment on gene expression of granulosa cells. Lower expression of genes involved in the cell cycle and higher expression of genes associated with granulosa cell differentiation prior to ovulation were observed. Selected candidate genes were analyzed by reverse transcription quantitative polymerase chain reaction. Although the effects of intramuscular injections of folic acid and vitamin B12 on lactational performance and metabolic status of animals were limited, Ingenuity Pathway Analysis of gene expression in granulosa cells suggests a stimulation of cell differentiation in vitamin-treated cows, which may be the result of an increase in LH secretion.
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2015-09-15 | E-GEOD-72038 | biostudies-arrayexpress
Project description:Folate, and its synthetic form folic acid, function as donor of one-carbon units and have been, together with other B-vitamins, implicated in programming of epigenetic processes such as DNA methylation during early development. To what extent regulation of DNA methylation can be altered via B-vitamins later in life, and how this relates to health and disease, is not exactly known. The aim of this study was to identify effects of long-term supplementation with folic acid and vitamin B12 on genome-wide DNA methylation in elderly subjects. This project was part of a randomized, placebo-controlled trial on effects of supplemental intake of folic acid and vitamin B12 on bone fracture incidence (B-PROOF study). Participants with mildly elevated homocysteine levels, aged 65-75 years, were randomly assigned to take 400 µg folic acid and 500 µg vitamin B12 per day or a placebo during an intervention period of two years. DNA was isolated from buffy coats, collected before and after intervention, and genome-wide DNA methylation was determined in 87 participants (n=44 folic acid/vitamin B12, n=43 placebo) using the Infinium HumanMethylation450 BeadChip. After intervention with folic acid and vitamin B12, 162 (versus 14 in the placebo group) of the 431,312 positions were differentially methylated as compared to baseline. Comparisons of the DNA methylation changes in the participants receiving folic acid and vitamin B12 versus placebo, revealed one single differentially methylated position (cg19380919) with a borderline statistical significance. However, based on the analyses of differentially methylated regions (DMRs) consisting of multiple positions, we identified 6 regions that differed statistically significantly between the intervention and placebo group. Pronounced changes were found for regions in the DIRAS3, ARMC8 and NODAL genes, implicated in carcinogenesis and early embryonic development. Furthermore, serum levels of folate and vitamin B12 or plasma homocysteine were related to DNA methylation of 173, 425 and 11 regions, respectively. Interestingly, for several members of the developmental HOX genes, DNA methylation was related to serum levels of folate. Long-term supplementation with folic acid and vitamin B12 in elderly subjects resulted in effects on DNA methylation of several genes, among which genes implicated in developmental processes.
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Project description:GARNET Pharmacogenomic Studies in the Vitamin Intervention for Stroke Prevention (VISP) trial
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2014-04-08 | GSE56583 | GEO
Project description:The objective of the overall study was to determine the effects of oral vitamin D supplementation on alveolar macrophages from human subjects. In this substudy, subjects treated with vitamin D (intervention group) in paired analysis had small, but significant effects on immune-related differential gene expression pre versus post supplementation. In this study, we obtained alveolar macrophages by bronchoalveolar lavage of subjects before and after a 3 month vitamin D trial. RNA for the array was obtained shortly after bronchoscopy. Randomized Controlled Trial: This is a substudy of paired samples of subjects treated with vitamin D. Each sample was studied once. 22 individuals were studied.
2014-04-08 | E-GEOD-56583 | biostudies-arrayexpress