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Effects of conjugated linoleic acid supplemntation on nutritional status, matrix metalloproteinases enzymes , inflammatory and oxidative factors in colorectal cancer patients undergoing chemoradiotherapy

ABSTRACT: Intervention 1: In supplemented group,patients will consume four 1000 mg capsules daily (providing 3 gr CLA ) for 6 weeks .Patients are instructed to take once at each of 3 mealtimes and once before bedtime. The supplementation begins 1 week before starting radiotherapy. Intervention 2: In placebo group,patients will consume four placebo capsules daily for 6 weeks . Patients are instructed to take once at each of 3 mealtimes and once before bedtime. The intervention begins 1 week before starting radiotherapy.;Prevention;Placebo;In supplemented group,patients will consume four 1000 mg capsules daily (providing 3 gr CLA ) for 6 weeks .Patients are instructed to take once at each of 3 mealtimes and once before bedtime. The supplementation begins 1 week before starting radiotherapy.;In placebo group,patients will consume four placebo capsules daily for 6 weeks . Patients are instructed to take once at each of 3 mealtimes and once before bedtime. The intervention begins 1 week before starting radiotherapy. Primary outcome(s): Serum conjugated linoleic acid. Timepoint: Before radiotherpay and at the end of intervention(6 weeks). Method of measurement: Gas Chromatography.;Inflammatory factors(TNF-a, IL-1, IL-6, hs-CRP). Timepoint: Before radiotherpay and at the end of intervention(6 weeks). Method of measurement: Elisa kit, hs-CRP: kit immunoturbidimetry. Study Design: Randomization: Randomized, Blinding: Double blinded, Placebo: Used, Assignment: Parallel, Purpose: Prevention.

DISEASE(S): Colorectal Cancer,Neoplasms,digestive Organs

PROVIDER: 2476095 | ecrin-mdr-crc |

REPOSITORIES: ECRIN MDR

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Project description:Beneficial effects of long-chain omega-3 polyunsaturated fatty acids (n-3 FAs) are generally well-known from epidemiological studies, but the various mechanisms of action are not completely clarified. Regulation of gene expression is one known mechanism of action, but only very limited data of regulated pathways in humans after n-3 FA supplementation are available. Up to now, no studies compared gene expression changes after n-3 FA supplementation between normolipidemic and dyslipidemic subjects. Therefore, the aim of this study was to investigate the effects of n-3 FA administration on whole genome expression profiles in the blood of normo- and dyslipidemic subjects. We conducted an intervention study with normo- and dyslipidemic men aged between 29 and 51 years, which were subdivided into four groups with a balanced age distribution and randomized to either six fish oil capsules per day providing 1.5 g docosahexaenoic acid and 1.0 g eicosapentaenoic acid or corn oil capsules rich in linoleic acid per day for a period of 12 weeks. Venous blood samples were collected at baseline as well as after 4 hours, 1 week and 12 weeks of supplementation. For each investigation time point, the samples of each group were pooled together to minimize inter-individual variability. All subjects have successfully completed the study, but for the microarray experiments, nine subject samples were excluded. Therefore, the microarray experiments are based on the following group characteristics: normolipidemic fish oil group (FO-N): pool of nine RNAs from normolipidemic subjects supplemented with fish oil; normolipidemic corn oil group (CO-N): pool of six RNAs from normolipidemic subjects supplemented with corn oil; dyslipidemic corn oil group (CO-D): pool of eight RNAs from dyslipidemic subjects supplemented with corn oil; dyslipidemic fish oil group (FO-D): pool of nine RNAs from dyslipidemic subjects supplemented with fish oil. The twenty normolipidemic and the twenty dyslipidemic subjects were subdivided into two groups. Thus, a total of four groups with ten men per group passed through the study. To realize a comparable mean age between groups, the formation of groups was performed by stratified allocation according to subject's age. The four study groups were randomly assigned to different study products by an uninvolved collaborator. Subjects ingested either six FO or six corn oil (CO) capsules per day for a period of twelve weeks. The daily n-3 PUFA intake via FO capsules was 2.7 g (1.14 g DHA and 1.56 g EPA). The predominant FA of the CO capsules was the omega-6 (n-6) PUFA linoleic acid (LA, 18:2n-6). Thus, the daily LA intake via CO capsules was 3.05 g LA. The subjects were instructed to ingest the capsules together with food, three in the morning and three in the evening, and to maintain their usual exercise and dietary habits throughout the intervention time. As an exception, at the first intervention day, all six capsules were ingested at the same time in the morning after a standardised breakfast. During each visit, fasting blood samples were collected by venepuncture. Additionally, participants completed a questionnaire to obtain information about changes in medication, dietary (e.g., changes in weekly fish intake, preferred fish dishes or species, respectively) and lifestyle habits (e.g., physical activity), as well as the tolerability of the capsules. This record summarizes the results of 16 microarrays. The samples originate from whole blood of normo- and dyslipidemic subjects supplemented with either fish oil or corn oil for 4 h, 1 week and 12 weeks. Microarrays were hybridized in a loop design with one common reference using a dye-swap approach.

Project description:Intervention 1: Intervention group: Subjects in the intervention group receive curcumin-piperine capsules (daily intake of 500 mg curcumin plus 5 mg piperine) for 8 weeks (n=36). The participants take one capsule every day, which was contained in an unlabeled bottle. Capsules are from Sami Labs company (Bangalore, India). Intervention 2: Control group: Placebo capsules are prepared by a similar company and are similar to the curcumin capsules regarding the color, shape and size. The control group receive a placebo capsule containing lactose plus 5 mg piperine for a period of 8 weeks (n=36). The participants take one capsule every day, which was contained in an unlabeled bottle. Capsules are from Sami Labs company (Bangalore, India). Primary outcome(s): Tumor necrosis factor alpha. Timepoint: Before the intervention and 8 weeks after taking drug or placebo. Method of measurement: Sandwich and competitive chemiluminescence immunoassays.;Interleukin 6. Timepoint: Before the intervention and 8 weeks after taking drug or placebo. Method of measurement: Sandwich and competitive chemiluminescence immunoassays.;Total quality of life score. Timepoint: Before the intervention and 8 weeks after taking drug or placebo. Method of measurement: Using EORTC QLQ questionnaire. Study Design: Randomization: Randomized, Blinding: Double blinded, Placebo: Used, Assignment: Parallel, Purpose: Treatment, Randomization description: Patients were randomly assigned to one of the treatment groups based on random allocation sequence generated by a statistician: 1) Drug: a group receiving liposomal curcumin capsules (500 mg/day) for 8 weeks (n=36), 2) Placebo: the control group who taking a placebo capsule for a period of 8 weeks (n=36).The tables of the Fleiss book were used to generate the random allocation sequence. The allocation scheme was consecutively numbered in envelopes which opened sequentially by an independent person, not involved in the study, Blinding description: All volunteers, care providers and statistician were blinded after assignment to intervention. So that, the capsules containers were coded as A and B by a non-researcher person and remained confidential until statistical analysis. The placebo capsules were similar to the drugs regarding the weight and c

Project description:The obese, insulin resistant state is characterized by impairments in lipid metabolism. Dietary polyphenols might improve these deteriorations. We have previously shown that 3-days supplementation of combined Epigallocatechin-gallate and Resveratrol (E+R) increased energy expenditure, which was accompanied by improved metabolic flexibility after a high-fat mixed-meal (HFMM) in men. The present study aimed to investigate whether these short-term effects translate into longer-term improvement of insulin sensitivity and lipid metabolism. In this randomized, double-blind study, 42 overweight subjects (21 male, 38Â±2 yrs, BMI 29.7Â±0.5 kg/m2, HOMA-IR 2.1Â±0.2) received either E+R (300 and 80 mg/d, respectively) or placebo (PLA) for 12 weeks (3 months). Before (t0) and after (t3) intervention, tissue-specific insulin sensitivity was assessed by a hyperinsulinemic-euglycemic clamp with stable isotope infusion. Fasting and postprandial (HFMM) lipid metabolism was assessed using indirect calorimetry and blood sampling. Adipose tissue and skeletal muscle lipolysis was measured using microdialysis in men and skeletal muscle biopsies were collected to assess mitochondrial function and gene expression alterations via microarray analysis. E+R supplementation increased fasting (P=0.06) and postprandial (P=0.03) fat oxidation but did not alter energy expenditure compared to PLA. This was accompanied by an E+R-induced increase in oxidative capacity in permeabilized muscle fibers (p<0.05). Moreover, E+R supplementation attenuated the increase in plasma triacylglycerol concentration that was observed in the PLA group (AUC, p<0.05), and tended to decrease visceral fat mass (P=0.09). Finally, insulin-stimulated glucose disposal and suppression of endogenous glucose production were not affected by E+R supplementation. 12 weeks E+R supplementation increased whole-body fat oxidation and skeletal muscle oxidative capacity, but this did not translate into increased tissue-specific insulin sensitivity in overweight and obese subjects. To identify pathways that may underlie the E+R-induced improvement of skeletal muscle mitochondrial capacity, we performed microarray analysis on skeletal muscle biopsies (vastus lateralis muscle), collected before and after 12-weeks E+R or PLA treatment. Gene Set Enrichment Analysis (GSEA) indicated that the most upregulated pathways after E+R supplementation were related to the citric acid cycle and respiratory electron transport chain, while pathways related to carbohydrate metabolism were upregulated in the PLA group. In this randomized, double-blind placebo-controlled, parallel intervention trial, subjects received either a combination of E+R supplements (INTV, 282 mg/d and 80 mg/d, respectively) or placebo (PLA, partly hydrolyzed microcrystalline cellulose-filled capsules) for a period of 12 weeks (3 months) to assess effects of E+R supplementation on tissue-specific insulin sensitivity (primary outcomes) and fasting and postprandial substrate metabolism (secondary outcomes). Skeletal muscle (m. vastus lateralis) biopsies were taken under local anesthesia during fasting conditions before (t0) and after the 12-weeks (t3) intervention period. Extraxted RNA was hybridized on HTA 2.0 Affymetrix arrays and microarray analysis was performed on paired sample sets for 27 subjects (p, PLA n = 14; E+R n = 13).

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Effects of conjugated linoleic acid supplemntation on nutritional status, matrix metalloproteinases enzymes , inflammatory and oxidative factors in colorectal cancer patients undergoing chemoradiotherapy

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