%0 Journal Article %~ PubMed %A McArthur, Jennifer O %A Petocz, Peter %A Caterson, Ian D %A Samman, Samir %T A Randomized Controlled Trial in Young Women of the Effects of Consuming Pork Meat or Iron Supplements on Nutritional Status and Feeling of Well-being. %B Journal of the American College of Nutrition %D 2012 %C United States %I American College of Nutrition %V 31 %N 3 %P 175-184 %@ 1541-1087 %X %Z FOR Codes: 111199 %0 Book Section %A Darnton-Hill, Ian %A Samman, Samir %T Diet and Diseases of Aging %B Encyclopedia of Lifestyle Medicine and Health %D 2012 %C United States %I Sage Publications, Inc. %V %N %P 338-342 %@ 9781412950237 %X %Z FOR Codes: 111702 111102 %0 Journal Article %~ PubMed %A Foster, Meika %A Karra, Michelle %A Picone, Tegan %A Chu, Anna %A Hancock, Dale P %A Petocz, Peter %A Samman, Samir %T Dietary Fiber Intake Increases the Risk of Zinc Deficiency in Healthy and Diabetic Women. %B Biological Trace Element Research %D 2012 %C United States %I Humana Press, Inc. %V 149 %N 2 %P 135-142 %@ 1559-0720 %X Phytic acid is a major determinant of zinc bioavailability. Little is known about phytic acid intakes or indices of zinc bioavailability in type 2 diabetes mellitus (DM), a condition that predisposes to zinc deficiency. The aim of this cross-sectional study was to measure and explore the relationships among phytic acid intake, zinc bioavailability, and molecular markers of zinc homeostasis in 20 women with DM compared to 20 healthy women. The phytate/zinc, (calcium)(phytate)/zinc, and (calcium + magnesium)(phytate)/zinc molar ratios were used to indicate zinc bioavailability. Plasma zinc concentrations and zinc transporter (ZnT1, ZnT8, and Zip1) gene expression in mononuclear cells were measured. Participants with DM consumed 1,194????????824??mg/day (mean????????SD) phytic acid, an amount similar to the intake of healthy women (1,316????????708??mg/day). Bread products and breakfast cereals contributed more than 40??% of the phytic acid intake in each group. A positive relationship was observed in all participants between phytic acid and dietary fiber (r???=???0.6, P???0.5 mg/100 g, and the food item contributed >5% of the recommended dietary intake. Female subjects (n = 22) were recruited to complete the questionnaire in addition to maintaining a weighed food record for 7 days. Mean intake of zinc obtained from the weighed records (8.8 +/- 2.3 mg/day; mean +/- SD) was significantly lower than that obtained from the FFQ (10.5 +/- 3.1 mg/day; P < 0.01). Ranked zinc intakes obtained from the two instruments were significantly correlated (r (s) = 0.81, P < 0.001). Evaluation of progressively shortened versions of the FFQ, containing 23-61 food items and representing 60-90% of the contribution to total zinc intake, yielded correspondingly decreasing magnitudes of zinc intake, but the rank correlation with the weighed records was significant (P < 0.01). Rank correlations and analysis of plots from Bland-Altman analyses suggest that a shortened 37-item FFQ has comparable validity to the full FFQ. A shortened FFQ is likely to produce lower demands on the interviewer and/or respondent when assessing zinc intake. %Z FOR Codes: 111199 111199 %0 Journal Article %A Samman, Samir %A Kung, Fan Piu %A Carter, Lisa %A Foster, Meika J %A Ahmad, Zia %A Phuyal, Jenny L %A Petocz, Peter %T Fatty acid composition of certified organic, conventional and omega-3 eggs %B Food Chemistry %D 2009 %C Netherlands %I Elsevier %V 116 %N %P 911-914 %@ 0308-8146 %X %Z FOR Codes: 110104 %0 Journal Article %~ PubMed %A Samman, Samir %A Koh, Hoon Siang %A Flood, Victoria M %A Blakesmith, Sarah J %A Petocz, Peter %A Lyons-Wall, Philippa M %T Red Clover (Trifolium pratense) Isoflavones and Serum Homocysteine in Premenopausal Women: A Pilot Study. %B Journal of women's health (2002) %D 2009 %C United States %I Mary Ann Liebert, Inc. Publishers %V 18 %N 11 %P 1813-16 %@ 1931-843X %X Abstract Background: There is limited information on the effect of isoflavones on homocysteine concentrations, a risk factor for a number of chronic diseases. Methods: Twenty-three premenopausal women participated in a double-blind, randomized, parallel study for four menstrual cycles. Subjects consumed either placebo or purified red clover (Trifolium pratense) isoflavone (86 mg/day) tablets. Blood samples were collected weekly during cycles 1, 3, and 4 for determination of serum folate and total homocysteine concentrations. Dietary intake was monitored monthly. Results: Concentrations of folate and homocysteine in serum did not change significantly in either group, and there were no significant differences observed between the follicular and luteal phases of the menstrual cycle. The participants'' dietary records indicated that nutrient intake was constant, and compliance was confirmed by analysis of urinary isoflavone concentrations and tablet counts in returned containers. Conclusions: These results suggest that in the absence of any dietary modification, supplementation with purified isoflavones that are predominantly methoxylated has no effect on serum homocysteine or folate in premenopausal women. %Z FOR Codes: 111199 110299 110499 %0 Journal Article %A Germaine, Kirsty %A Samman, Samir %A Fryirs, Catherine %A Griffiths, Patricia %A Johnson, Stuart %A Quail, Kenneth %T Comparison of in vitro starch digestibility methods for predicting the glycaemic index of grain foods %B Journal of the Science of Food and Agriculture %D 2008 %C United Kingdom %I John Wiley & Sons Ltd %V 88 %N 4 %P 652-658 %@ 0022-5142 %X %Z FOR Codes: 1108 %0 Journal Article %A Samman, Samir %A Chow, Jessa %A Foster, Meika %A Ahmad, Zia %A Phuyal, Jenny %A Petocz, Peter %T Fatty acid composition of edible oils derived from certified organic and conventional agricultural methods %B Fatty acid composition of edible oils derived from certified organic and conventional agricultural methods %D 2008 %C Netherlands %I Elsevier BV %V 109 %N %P 670-674 %@ 0308-8146 %X %Z FOR Codes: 1111 %0 Journal Article %A Ojha, Rachel %A Amanatidis, Soumela %A Petocz, Peter %A Samman, Samir %T Dietitians and naturopaths require evidence-based nutrition information on organic food %B Nutrition & Dietetics %D 2007 %C Australia %I Blackwell Publishing Asia %V 64 %N 0 %P 31-36 %@ 1446-6368 %X %Z FOR Codes: 111101 %0 Journal Article %~ PubMed %A Bell-Anderson, Kim %A Samman, Samir %T Feeding baby: consequences of over-nutrition in utero. %B Current opinion in lipidology %D 2007 %C England %I Lippincott Williams & Wilkins %V 18 %N 2 %P 224-226 %@ 0957-9672 %X %Z FOR Codes: 111101 %0 Journal Article %A Samman, Samir %T Iron %B Nutrition & Dietetics %D 2007 %C Australia %I Blackwell Publishing Asia %V 64 %N 4 %P S126-S130 %@ 1446-6368 %X %Z FOR Codes: 111101 %0 Journal Article %A Samman, Samir %T Zinc %B Nutrition & Dietetics %D 2007 %C Australia %I Blackwell Publishing Asia %V 64 %N 4 %P S131-S134 %@ 1446-6368 %X %Z FOR Codes: 111101 %0 Journal Article %~ PubMed %A McMillan-Price, Joanna %A Petocz, Peter %A Atkinson, Fiona %A O'neill, Kathleen %A Samman, Samir %A Steinbeck, Katherine %A Caterson, Ian %A Brand-Miller, Jennie %T Comparison of 4 diets of varying glycemic load on weight loss and cardiovascular risk reduction in overweight and obese young adults: a randomized controlled trial. %B Archives of internal medicine %D 2006 %C USA %I American Medical Association %V 166 %N 14 %P 1466-75 %@ 0003-9926 %X BACKGROUND: Despite the popularity of low-glycemic index (GI) and high-protein diets, to our knowledge no randomized, controlled trials have systematically compared their relative effects on weight loss and cardiovascular risk. METHODS: A total of 129 overweight or obese young adults (body mass index, >/=25 [calculated as weight in kilograms divided by the square of height in meters]) were assigned to 1 of 4 reduced-fat, high-fiber diets for 12 weeks. Diets 1 and 2 were high carbohydrate (55% of total energy intake), with high and low GIs, respectively; diets 3 and 4 were high protein (25% of total energy intake), with high and low GIs, respectively. The glycemic load was highest in diet 1 and lowest in diet 4. Changes in weight, body composition, and blood chemistry profile were studied. RESULTS: While all groups lost a similar mean +/- SE percentage of weight (diet 1, -4.2% +/- 0.6%; diet 2, -5.5% +/- 0.5%; diet 3, -6.2% +/- 0.4%; and diet 4, -4.8% +/- 0.7%; P = .09), the proportion of subjects in each group who lost 5% or more of body weight varied significantly by diet (diet 1, 31%; diet 2, 56%; diet 3, 66%; and diet 4, 33%; P = .01). Women on diets 2 and 3 lost approximately 80% more fat mass (-4.5 +/- 0.5 [mean +/- SE] kg and -4.6 +/- 0.5 kg) than those on diet 1 (-2.5 +/- 0.5 kg; P = .007). Mean +/- SE low-density-lipoprotein cholesterol levels declined significantly in the diet 2 group (-6.6 +/- 3.9 mg/dL [-0.17 +/- 0.10 mmol/L]) but increased in the diet 3 group (+10.0 +/- 3.9 mg/dL [+0.26 +/- 0.10 mmol/L]; P = .02). Goals for energy distribution were not achieved exactly: both carbohydrate groups ate less fat, and the diet 2 group ate more fiber. CONCLUSION: Both high-protein and low-GI regimens increase body fat loss, but cardiovascular risk reduction is optimized by a high-carbohydrate, low-GI diet.Trial Registration clinicaltrials.gov Identifier: NCT00254215. %Z FOR Codes: 110299 %0 Journal Article %~ PubMed %A Samman, Samir %A McCarthur, Jennifer O %A Peat, Mary %T Defining core elements and outstanding practice in Nutritional Science through collaborative benchmarking. %B Asia Pacific journal of clinical nutrition %D 2006 %C Australia %I H E C Press %V 15 %N 1 %P 6-9 %@ 0964-7058 %X Benchmarking has been adopted by educational institutions as a potentially sensitive tool for improving learning and teaching. To date there has been limited application of benchmarking methodology in the Discipline of Nutritional Science. The aim of this survey was to define core elements and outstanding practice in Nutritional Science through collaborative benchmarking. Questionnaires that aimed to establish proposed core elements for Nutritional Science, and inquired about definitions of " good" and " outstanding" practice were posted to named representatives at eight Australian universities. Seven respondents identified core elements that included knowledge of nutrient metabolism and requirement, food production and processing, modern biomedical techniques that could be applied to understanding nutrition, and social and environmental issues as related to Nutritional Science. Four of the eight institutions who agreed to participate in the present survey identified the integration of teaching with research as an indicator of outstanding practice. Nutritional Science is a rapidly evolving discipline. Further and more comprehensive surveys are required to consolidate and update the definition of the discipline, and to identify the optimal way of teaching it. Global ideas and specific regional requirements also need to be considered. %0 Journal Article %~ PubMed %A Bell-Anderson, Kim %A Samman, Samir %T Nutrition and metabolism: race, sex and the metabolic syndrome. %B Current opinion in lipidology %D 2006 %C PHILADELPHIA, USA %I Lippincott Williams and Wilkins %V 17 %N 1 %P 82-4 %@ 0957-9672 %X %Z FOR Codes: %0 Journal Article %~ Isi %A Balasundram, N. %A Sundram, K. %A Samman, S. %T Phenolic compounds in plants and agri-industrial by-products: Antioxidant activity, occurrence, and potential uses. %B Food Chemistry %D 2006 %C Oxford %I ELSEVIER SCI LTD %V 99 %N 1 %P 191-203 %@ 0308-8146 %X %Z FOR Codes: 111799 %0 Journal Article %~ Isi %A Samman, S. %A Koh, H. %A Blakesmith, S. J. %A Petocz, P. %A Lyons-Wall, P. M. %T Supplementation with predominantly methoxylated isoflavones derived from red clover has no effect on plasma homocysteine or folate concentrations in young women. %B Faseb Journal %D 2006 %C BETHESDA, MD, USA %I Federation American Society %V 20 %N 4 %P A153-A153 %@ 0892-6638 %X %Z FOR Codes: 111101 110101 %0 Journal Article %~ PubMed %A Hughes, Suzanne %A Samman, Samir %T The effect of zinc supplementation in humans on plasma lipids, antioxidant status and thrombogenesis. %B Journal of the American College of Nutrition %D 2006 %C USA %I American College of Nutrition %V 25 %N 4 %P 285-91 %@ 0731-5724 %X The potential exists for zinc to influence numerous metabolic functions and to impact a range of diseases. In the present review we examine the reported relationships between zinc and plasma lipids, haemostasis and other factors postulated to play a role in atherogenesis. Ecological studies that investigated zinc intake or status, and incidence of coronary heart disease (CHD) reveal no consistent pattern. The conflicting observations may be explained by differences in the extent of CHD, site of atherosclerosis, or confounding factors. In most studies the diurnal variation in serum zinc concentrations, and the lifestyle factors that affect cholesterol metabolism were not explicitly considered. Results of randomised controlled trials show that low-density lipoprotein (LDL) oxidation and the concentrations of LDL-cholesterol (c), total cholesterol and triglycerides in plasma are unaffected by supplementation with up to 150 mg Zn/d. In contrast, plasma high-density lipoprotein (HDL)-c concentrations decline when zinc supplements provide a dose >50 mg/d. Limited data suggest that sustained hyperzincaemia predisposes individuals to thrombogenesis, whereas acute zinc depletion impairs platelet aggregation and prolongs bleeding time. In addition, Zinc supplements have been shown in some studies to decrease Cu/Zn-superoxide dismutase activity, primarily due to the antagonistic relationship between high zinc intakes and copper absorption. Besides the demonstrated adverse effect of zinc supplementation on plasma HDL-c concentrations in apparently healthy men, there is insufficient evidence to determine the role of zinc supplementation in influencing other risk factors for CHD such as antioxidant status and thrombogenesis. %Z FOR Codes: 111101