Dr Alan Sneddon
Metabolic Health Group
University of Aberdeen
Aberdeen. AB25 2ZD
Tel: +44(0)1224 438671
Fax: +44(0)1224 438629
- BSc (Hons) Biochemistry1985 - University of Dundee
- PhD Biochemistry1989 - University of Dundee
- Deputy Editor for British Journal of Nutrition
- First Editor for Journal of Nutritional Science.
- Member of Editorial Board for Preventive Nutrition and Food Science
- Member of the Nutrition Society
The nutritional and cardiovascular health benefits of rapeseed oil-fed farmed salmon in humans are not decreased compared with those of traditionally farmed salmon: a randomized controlled trialEuropean Journal of Nutrition, vol. 60, pp. 2063–2075Contributions to Journals: Articles
Linkages of agroecosystems producing farmed seafood on food security, nutritional status and adolescent health in BangladeshMaternal and Child Nutrition, vol. 16, no. Suppl 3, 13017Contributions to Journals: Articles
Anticancer effects of n-3 EPA and DHA and their endocannabinoid derivatives on breast cancer cell growth and invasionProstaglandins, Leukotrienes and Essential Fatty Acids, vol. 156, pp. 102024Contributions to Journals: Articles
Phenotypic and genetic analysis of milk and serum element concentrations in dairy cowsJournal of Dairy Science, vol. 102, no. 12, pp. 11180-11192Contributions to Journals: Articles
Linking agroecosystems producing farmed seafood with food security and health status to better address the nutritional challenges in BangladeshPublic Health Nutrition, vol. 22, no. 16, pp. 2941-2949Contributions to Journals: Articles
Micronutrients and heavy metals and health
My research interests lie primarily in identifying the role of micronutrients in health and disease. This work involves accurately quantifying micronutrient levels within different food products within the diet and also in developing tools to assess their bioavailability within the body.
I have also recently developed an interest in heavy metals and their effects on health. Heavy metals including mercury, cadmium and lead can be ingested from the diet and evidence suggests that certain micronutrients play a role in alleviating their toxicity within the body.
This research will help the food industry to make healthier products and provide information on how micronutrients act to promote health.
We have been investigating the function of dietary fatty acids and micronutrients in human health and disease and in particular cardiovascular disease (CVD). Using a model of heart disease we have shown that consuming a high fat diet lacking one micronutrient (selenium) increases heart disease more compared to consumption of the same diet containing selenium. Furthermore, these effects correlated with the levels of ‘bad’ fatty acids within the bloodstream. Additionally, other studies have shown that selenium has an anti-inflammatory effect both within immune cells and endothelial cells (which line the inside of blood vessels) and that it can reduce the interaction between these cell types, which is an important early step in heart disease development. More recent work has involved investigating nutrient-nutrient interactions relevant to CVD.
Currently, we are investigating the effects of seasonality and location on shellfish micronutrient levels and the effect of regular shellfish consumption on modulating micronutrient status in humans. These studies have ranged from measuring conventional markers of nutrient intake, to developing tools to assess micronutrient bioavailability as well as developing improved markers to assess micronutrient status and have encompassed work at both cellular and tissue level and intervention studies within animal models and in humans.
The objective of this work has been to obtain evidence for the involvement of specific nutrients in promoting health and alleviating disease in order to provide more informed dietary advice on their optimum requirements within the population. Previous work has focused on how the changing composition of feedstuffs within the aquaculture and dairy industries driven by issues of sustainability, impact on ultimate product nutritional quality and the likely influence on health for the consumer. Funding from the Wellcome Trust and British Heart Foundation have also investigated the influence of genotype and chemical speciation on micronutrient function, bioavailability and health.
Funding and Grants
- RESAS (Scottish Government): Improving primary produce; Food Safety; Improvement of livestock.
- Industrial Funding: ‘Crab consumption, cadmium and health; do crabmeat consumers have a greater cadmium burden compared to non-crabmeat consumers?
- IMMANA: Aquatic Food for Health and Nutrition (AQN): A metric for assessing the impacts on nutrition and health of agroecosystems producing farmed seafood.
- Elphinstone PhD studentship:‘The effect of selected micronutrients on endothelial cell function with relevance to atherosclerosis’
- Encompass Kick-start Award: “Developing bioactive mapping in seaweeds as a quality assurance tool” (co-applicant)
- Fraserburgh Moonlight Prowl PhD studentship: ‘Omega-3 endocannabinoids: novel anticancer lipid ethanolamides’.
- RESAS (Scottish Government), Healthy and safe diets.
- British Heart Foundation: ‘Atherosclerosis: the effect of selenium speciation and dose’.
- Wellcome Trust Project Grant: ‘Interaction of selenium, fatty acids and a polymorphism in GPX4 in modulating vascular function’.
Course Co-ordinator for RN5507 'Nutrition and Health' (since 2016)
Lecturer/contributor on MSc Human Nutrition programme (RN5003 Foundations of Nutrition, RR5502 Molecular Nutrition, RN5507)
Lecturer/contributor on MSc Cardiovascular Science and Diabetes programme (RN5507 Nutrition and Health)
Lecturer/contributor on MSc Clinical Nutrition programme (RN5001 Fundamentals of Human Nutrition and Metabolism)
Supervision of MSc Human Nutrition and MSc Clinical Nutrition research projects (PU5922 Masters Research Project, MB5904 Masters Research Project (Laboratory))
Non-course Teaching Responsibilities
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Clenbuterol increases muscle fiber size and GATA-2 protein in rat skeletal muscle in uteroMolecular Reproduction and Development, vol. 75, no. 5, pp. 785-794Contributions to Journals: Articles
Effect of a conjugated linoleic acid and omega-3 fatty acid mixture on body composition and adiponectinObesity, vol. 16, no. 5, pp. 1019-1024Contributions to Journals: Articles
Effects of age and obesity on 24-hour heart rate variability in healthy lean and obese, young and older menInternational Journal of Obesity, vol. 32, no. Supplement 1, pp. S112Contributions to Journals: Articles
Regulation of adhesion molecule expression in human endothelial and smooth muscle cells by omega-3 fatty acids and conjugated linoleic acids: Involvement of the transcription factor NF-κB?Prostaglandins, Leukotrienes and Essential Fatty Acids, vol. 78, no. 1, pp. 33-43Contributions to Journals: Articles
The effects of fish oil and DHA on soluble epoxide hydrolase in apoE-/- miceProceedings of the Nutrition Society, vol. 66, no. Supplement OCA-B , 103AContributions to Journals: Abstracts
Cytokine-induced monocyte adhesion to endothelial cells involves platelet-activating factor: suppression by conjugated linoleic acidBiochimica et Biophysica Acta. Molecular and Cell Biology of Lipids, vol. 1761, no. 7, pp. 793-801Contributions to Journals: Articles
Induction of apoptosis and inhibition of NF-kappa B activation in human prostate cancer cells by the cis-9, trans-11 but not the trans-10, cis-12 isomer of conjugated linoleic acidThe Prostate, vol. 66, no. 8, pp. 839-846Contributions to Journals: Articles
Platelet-activating factor mediates cytokine-induced monocyte adhesion to endothelium: Suppression by conjugated linoleic acidAtherosclerosis Supplements, vol. 7, no. 3, pp. 222-223Contributions to Journals: Articles
Plasma adiponectin levels after a high-fat meal and a standard mixed meal in lean and obese, young and older men.Proceedings of the Nutrition Society, vol. 65, no. Suppl. S, pp. 98AContributions to Journals: Articles
Moderate maternal vitamin A deficiency alters myogenic regulatory protein expression and perinatal organ growth in the ratAmerican Journal of Physiology-Regulatory Integrative and Comparative Physiology, vol. 288, no. 1, pp. R73-R79Contributions to Journals: Articles