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Duncan E, Ashton L, Abdulai AR, Sawadogo-Lewis T, King SE, Fraser EDG, Vosti S, Haines J, Knight F, Roberton T. Connecting the food and agriculture sector to nutrition interventions for improved health outcomes. Food Secur 2022; 14:657-675. [PMID: 35126795 PMCID: PMC8804081 DOI: 10.1007/s12571-022-01262-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 01/16/2022] [Indexed: 11/28/2022]
Abstract
To achieve the Sustainable Development Goal of zero hunger, multi-sectoral strategies to improve nutrition are necessary. Building towards this goal, the food and agriculture sector must be considered when designing nutritional interventions. Nevertheless, most frameworks designed to guide nutritional interventions do not adequately capture opportunities for integrating nutrition interventions within the food and agriculture sector. This paper aims to highlight how deeply connected the food and agriculture sector is to underlying causes of malnutrition and identify opportunities to better integrate the food and agriculture sector and nutrition in low and middle income countries. In particular, this paper: (1) expands on the UNICEF conceptual framework for undernutrition to integrate the food and agriculture sector and nutrition outcomes, (2) identifies how nutritional outcomes and agriculture are linked in six important ways by defining evidence-based food and agriculture system components within these pathways: as a source of food, as a source of income, through food prices, women’s empowerment, women’s utilization of time, and women’s health and nutritional status, and (3) shows that the food and agriculture sector facilitates interventions through production, processing and consumption, as well as through farmer practices and behavior. Current frameworks used to guide nutrition interventions are designed from a health sector paradigm, leaving agricultural aspects not sufficiently leveraged. This paper concludes by proposing intervention opportunities to rectify the missed opportunities generated by this approach. Program design should consider the ways that the food and agriculture sector is linked to other critical sectors to comprehensively address malnutrition. This framework is designed to help the user to begin to identify intervention sites that may be considered when planning and implementing multi-sectoral nutrition programs.
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Affiliation(s)
- E. Duncan
- University of Guelph, Guelph, ON Canada
| | - L. Ashton
- University of Guelph, Guelph, ON Canada
| | | | | | | | | | - S. Vosti
- University of Guelph, Guelph, ON Canada
| | - J. Haines
- University of Guelph, Guelph, ON Canada
| | - F. Knight
- University of Guelph, Guelph, ON Canada
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Groves K, Ashcroft AE, Cryar A, Sula A, Wallace BA, Stocks BB, Burns C, Cooper-Shepherd D, De Lorenzi E, Rodriguez E, Zhang H, Ault JR, Ferguson J, Phillips JJ, Pacholarz K, Thalassinos K, Luckau L, Ashton L, Durrant O, Barran P, Dalby P, Vicedo P, Colombo R, Davis R, Parakra R, Upton R, Hill S, Wood V, Soloviev Z, Quaglia M. Reference Protocol to Assess Analytical Performance of Higher Order Structural Analysis Measurements: Results from an Interlaboratory Comparison. Anal Chem 2021; 93:9041-9048. [PMID: 34165299 DOI: 10.1021/acs.analchem.0c04625] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Measurements of protein higher order structure (HOS) provide important information on stability, potency, efficacy, immunogenicity, and biosimilarity of biopharmaceuticals, with a significant number of techniques and methods available to perform these measurements. The comparison of the analytical performance of HOS methods and the standardization of the results is, however, not a trivial task, due to the lack of reference protocols and reference measurement procedures. Here, we developed a protocol to structurally alter and compare samples of somatropin, a recombinant biotherapeutic, and describe the results obtained by using a number of techniques, methods and in different laboratories. This, with the final aim to provide tools and generate a pool of data to compare and benchmark analytical platforms and define method sensitivity to structural changes. Changes in somatropin HOS, induced by the presence of zinc at increasing concentrations, were observed, both globally and at more localized resolution, across many of the methods utilized in this study and with different sensitivities, suggesting the suitability of the protocol to improve understanding of inter- and cross-platform measurement comparability and assess analytical performance as appropriate.
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Affiliation(s)
- K Groves
- National Measurement Laboratory, LGC Ltd. Queens Road, Teddington, Middlesex TW11 0LY, U.K
| | - A E Ashcroft
- Astbury Centre for Structural Molecular Biology & School of Molecular and Cellular Biology, University of Leeds, Leeds LS2 9JT, U.K
| | - A Cryar
- National Measurement Laboratory, LGC Ltd. Queens Road, Teddington, Middlesex TW11 0LY, U.K
| | - A Sula
- Institute of Structural and Molecular Biology, Birkbeck College, University of London, London WC1E 7HX, U.K
| | - B A Wallace
- Institute of Structural and Molecular Biology, Birkbeck College, University of London, London WC1E 7HX, U.K
| | - B B Stocks
- National Research Council Canada, 1200 Montreal Road, Ottawa K1A 0R6, Canada
| | - C Burns
- Biotherapeutics Division, National Institute for Biological Standards and Control, Blanche Lane South Mimms, Potters Bar, Hertfordshire EN6 3QG, U.K
| | - D Cooper-Shepherd
- National Measurement Laboratory, LGC Ltd. Queens Road, Teddington, Middlesex TW11 0LY, U.K
| | - E De Lorenzi
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - E Rodriguez
- UCB Celltech, 216 Bath Road, Slough, Berkshire SL1 3WE, U.K
| | - H Zhang
- Department of Biochemical Engineering, University College London, London WC1E 6BT, U.K
| | - J R Ault
- Astbury Centre for Structural Molecular Biology & School of Molecular and Cellular Biology, University of Leeds, Leeds LS2 9JT, U.K
| | - J Ferguson
- Biotherapeutics Division, National Institute for Biological Standards and Control, Blanche Lane South Mimms, Potters Bar, Hertfordshire EN6 3QG, U.K
| | - J J Phillips
- Living Systems Institute, Department of Biosciences, University of Exeter, Exeter EX4 4QD, , U.K
| | - K Pacholarz
- Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, Manchester M1 7DN, U.K
| | - K Thalassinos
- Institute of Structural and Molecular Biology, Division of Biosciences, University College London, London WC1E 6AR, U.K
| | - L Luckau
- National Measurement Laboratory, LGC Ltd. Queens Road, Teddington, Middlesex TW11 0LY, U.K
| | - L Ashton
- Department of Chemistry, Lancaster University, Lancaster LA1 4YB, U.K
| | - O Durrant
- UCB Celltech, 216 Bath Road, Slough, Berkshire SL1 3WE, U.K
| | - P Barran
- Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, Manchester M1 7DN, U.K
| | - P Dalby
- Department of Biochemical Engineering, University College London, London WC1E 6BT, U.K
| | - P Vicedo
- Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, Manchester M1 7DN, U.K
| | - R Colombo
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - R Davis
- UCB Celltech, 216 Bath Road, Slough, Berkshire SL1 3WE, U.K
| | - R Parakra
- Living Systems Institute, Department of Biosciences, University of Exeter, Exeter EX4 4QD, , U.K
| | - R Upton
- Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, Manchester M1 7DN, U.K
| | - S Hill
- National Measurement Laboratory, LGC Ltd. Queens Road, Teddington, Middlesex TW11 0LY, U.K
| | - V Wood
- Department of Biochemical Engineering, University College London, London WC1E 6BT, U.K
| | - Z Soloviev
- Institute of Structural and Molecular Biology, Division of Biosciences, University College London, London WC1E 6AR, U.K
| | - M Quaglia
- National Measurement Laboratory, LGC Ltd. Queens Road, Teddington, Middlesex TW11 0LY, U.K
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3
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Pallikadavath S, Ashton L, Burton J, Brunskill N, Gray L, Major R. Aspirin in the primary prevention of cardiovascular disease in individuals with chronic kidney disease: a systematic review and meta-analysis. Eur J Prev Cardiol 2021. [DOI: 10.1093/eurjpc/zwab061.410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Introduction
Cardiovascular disease (CVD) is a major cause of morbidity and mortality in individuals with chronic kidney disease (CKD). Aspirin is widely used in secondary prevention of cardiovascular disease. Its use in primary prevention, particularly in CKD, is less clear. Previous reviews have offered inconclusive findings for the benefit of aspirin in CKD. Recent trials have been completed that may help provide more conclusive answers in CKD.
Purpose
This study aimed to assess the role of aspirin in the primary prevention of CVD and its associated adverse events in individuals with CKD.
Methods
A pre-defined protocol registered with PROSPERO (CRD42014008860) was used. The OVID Medline and EMBASE databases were searched for studies from 1996 to the 15th September 2020. Abstracts and full-texts were screened independently by two reviewers. Randomised controlled trials that compared aspirin to placebo in individuals with non-endstage CKD without CVD nor primary renal disease were included. The primary outcomes of interests were: CVD, major and minor bleeding events. Secondary outcomes of interest were: all-cause mortality, coronary artery disease and stroke. A meta-analysis was conducted using a random-effects model to calculate a pooled relative risk (RR).
Results
Five trials were included with 434 CVD events in 7,825 individuals with CKD. Aspirin offered no statistically significant benefit in reduction of CVD events (RR = 0.79, 95%CI: 0.57, 1.09) but significantly increased both minor (RR = 2.62, 95%CI: 1.64, 4.20) and major bleeding (RR= 1.51, 95%CI: 1.13, 2.02) events compared to placebo. Aspirin conferred no benefit for all-cause mortality (RR= 0.89, 95%CI: 0.64, 1.22), coronary heart disease (RR= 0.66, 95%CI: 0.27, 1.63) and stroke (RR= 0.94, 95%CI: 0.55, 1.58).
Conclusion
Aspirin cannot be recommended for the primary prevention of CVD in individuals with CKD as it offers no conclusive benefit and increases the risk of bleeding. Other strategies to optimise CVD primary prevention in individuals with CKD should be prioritised.
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Affiliation(s)
- S Pallikadavath
- NIHR Biomedical Research Unit in Cardiovascular Disease, Leicester, United Kingdom of Great Britain & Northern Ireland
| | - L Ashton
- University of Leicester, Leicester Medical School, Leicester, United Kingdom of Great Britain & Northern Ireland
| | - J Burton
- University Hospital of Leicester, John Walls Renal Unit, Leicester General Hospital, Leicester, United Kingdom of Great Britain & Northern Ireland
| | - N Brunskill
- University Hospital of Leicester, John Walls Renal Unit, Leicester General Hospital, Leicester, United Kingdom of Great Britain & Northern Ireland
| | - L Gray
- University of Leicester, Department of Health Sciences, Leicester, United Kingdom of Great Britain & Northern Ireland
| | - R Major
- University of Leicester, Department of Health Sciences, Leicester, United Kingdom of Great Britain & Northern Ireland
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Duncanson K, Shrewsbury V, Burrows T, Chai LK, Ashton L, Taylor R, Gow M, Ho M, Ells L, Stewart L, Garnett S, Jensen ME, Nowicka P, Littlewood R, Demaio A, Coyle DH, Walker JL, Collins CE. Impact of weight management nutrition interventions on dietary outcomes in children and adolescents with overweight or obesity: a systematic review with meta‐analysis. J Hum Nutr Diet 2020; 34:147-177. [DOI: 10.1111/jhn.12831] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 09/28/2020] [Accepted: 10/02/2020] [Indexed: 12/19/2022]
Affiliation(s)
- K. Duncanson
- School of Health Sciences Faculty of Health and Medicine Priority Research Centre for Physical Activity and Nutrition The University of Newcastle Callaghan NSW Australia
| | - V. Shrewsbury
- School of Health Sciences Faculty of Health and Medicine Priority Research Centre for Physical Activity and Nutrition The University of Newcastle Callaghan NSW Australia
| | - T. Burrows
- School of Health Sciences Faculty of Health and Medicine Priority Research Centre for Physical Activity and Nutrition The University of Newcastle Callaghan NSW Australia
| | - L. K. Chai
- Health and Wellbeing Queensland Queensland Government Milton QLD Australia
- Centre for Children’s Health Research Institute of Health and Biomedical Innovation Exercise and Nutrition Queensland University of Technology South Brisbane QLD Australia
| | - L. Ashton
- School of Health Sciences Faculty of Health and Medicine Priority Research Centre for Physical Activity and Nutrition The University of Newcastle Callaghan NSW Australia
| | - R. Taylor
- School of Health Sciences Faculty of Health and Medicine Priority Research Centre for Physical Activity and Nutrition The University of Newcastle Callaghan NSW Australia
| | - M. Gow
- Institute of Endocrinology and Diabetes The Children’s Hospital at Westmead Westmead NSW Australia
- Children’s Hospital at Westmead Clinical School The University of Sydney Westmead NSW Australia
| | - M. Ho
- School of Nursing The University of Hong Kong Pokfulam Hong Kong
| | - L. Ells
- School of Clinical and Applied Sciences Leeds Beckett University Leeds UK
- Teesside Centre for Evidence Informed Practice: a Joanna Briggs Institute Centre of Excellence Middlesbrough UK
| | - L. Stewart
- Appletree Healthy Lifestyle Consultancy Perth UK
| | - S. Garnett
- Institute of Endocrinology and Diabetes The Children’s Hospital at Westmead Westmead NSW Australia
- Children’s Hospital at Westmead Clinical School The University of Sydney Westmead NSW Australia
| | - M. E. Jensen
- Priority Research Centre Grow Up Well and Faculty of Health and Medicine The University of Newcastle Callaghan NSW Australia
| | - P. Nowicka
- Department of Food Studies, Nutrition and Dietetics Uppsala University Uppsala Sweden
| | - R. Littlewood
- Health and Wellbeing Queensland Queensland Government Milton QLD Australia
- School of Human Movement and Nutrition Sciences The University of Queensland St Lucia QLD Australia
| | - A. Demaio
- Victorian Health Promotion Foundation Carlton South VIC Australia
| | - D. H. Coyle
- School of Health Sciences Faculty of Health and Medicine Priority Research Centre for Physical Activity and Nutrition The University of Newcastle Callaghan NSW Australia
- The George Institute for Global Health University of New South Wales Sydney NSW Australia
| | - J. L. Walker
- School of Human Movement and Nutrition Sciences The University of Queensland St Lucia QLD Australia
| | - C. E. Collins
- School of Health Sciences Faculty of Health and Medicine Priority Research Centre for Physical Activity and Nutrition The University of Newcastle Callaghan NSW Australia
- The University of Newcastle Centre for Evidence Based Healthcare Informing Research (CEBHIR): a Joanna Briggs Institute Centre of Excellence Callaghan NSW Australia
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5
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Ashton L. Does medical uncertainty affect physiotherapist practitioners working within a first contact role? An exploratory study. Physiotherapy 2020. [DOI: 10.1016/j.physio.2020.03.233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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6
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Ashton L, Hutchesson M, Rollo M, Morgan P, Collins C. Young men's motivators and barriers to healthy eating and their preferences for a healthy eating intervention. Journal of Nutrition & Intermediary Metabolism 2016. [DOI: 10.1016/j.jnim.2015.12.307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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7
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Bryant M, Ashton L, Nixon J, Jebb S, Wright J, Roberts K, Brown J. Framework of outcome measures recommended for use in the evaluation of childhood obesity treatment interventions: the CoOR framework. Pediatr Obes 2014; 9:e116-31. [PMID: 24729517 DOI: 10.1111/j.2047-6310.2014.220.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2013] [Accepted: 12/03/2013] [Indexed: 12/28/2022]
Abstract
INTRODUCTION Consensus is lacking in determining appropriate outcome measures for assessment of childhood obesity treatments. Inconsistency in the use and reporting of such measures impedes comparisons between treatments and limits consideration of effectiveness. This study aimed to produce a framework of recommended outcome measures: the Childhood obesity treatment evaluation Outcomes Review (CoOR) framework. METHODS A systematic review including two searches was conducted to identify (1) existing trial outcome measures and (2) manuscripts describing development/evaluation of outcome measures. Outcomes included anthropometry, diet, eating behaviours, physical activity, sedentary time/behaviour, fitness, physiology, environment, psychological well-being and health-related quality of life. Eligible measures were appraised by the internal team using a system developed from international guidelines, followed by appraisal from national external expert collaborators. RESULTS A total of 25,486 papers were identified through both searches. Eligible search 1 trial papers cited 417 additional papers linked to outcome measures, of which 56 were eligible. A further 297 outcome development/evaluation papers met eligibility criteria from search 2. Combined, these described 191 outcome measures. After internal and external appraisal, 52 measures across 10 outcomes were recommended for inclusion in the CoOR framework. CONCLUSION Application of the CoOR framework will ensure greater consistency in choosing robust outcome measures that are appropriate to population characteristics.
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Affiliation(s)
- M Bryant
- Clinical Trials Research Unit, University of Leeds, Leeds, UK
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8
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Turner P, Turner C, Green N, Ashton L, Lwe E, Jankhot A, Day NP, White NJ, Nosten F, Goldblatt D. Serum antibody responses to pneumococcal colonization in the first 2 years of life: results from an SE Asian longitudinal cohort study. Clin Microbiol Infect 2014; 19:E551-8. [PMID: 24255996 PMCID: PMC4282116 DOI: 10.1111/1469-0691.12286] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Assessment of antibody responses to pneumococcal colonization in early childhood may aid our understanding of protection and inform vaccine antigen selection. Serum samples were collected from mother-infant pairs during a longitudinal pneumococcal colonization study in Burmese refugees. Maternal and cord sera were collected at birth and infants were bled monthly (1–24 months of age). Nasopharyngeal swabs were taken monthly to detect colonization. Serum IgG titres to 27 pneumococcal protein antigens were measured in 2624 sera and IgG to dominant serotypes (6B, 14, 19F, 19A and 23F) were quantified in 864 infant sera. Antibodies to all protein antigens were detectable in maternal sera. Titres to four proteins (LytB, PcpA, PhtD and PhtE) were significantly higher in mothers colonized by pneumococci at delivery. Maternally-derived antibodies to PiuA and Spr0096 were associated with delayed pneumococcal acquisition in infants in univariate, but not multivariate models. Controlling for infant age and previous homologous serotype exposure, nasopharyngeal acquisition of serotypes 19A, 23F, 14 or 19F was associated significantly with a ≥2-fold antibody response to the homologous capsule (OR 12.84, 7.52, 6.52, 5.33; p <0.05). Acquisition of pneumococcal serotypes in the nasopharynx of infants was not significantly associated with a ≥2-fold rise in antibodies to any of the protein antigens studied. In conclusion, nasopharyngeal colonization in young children resulted in demonstrable serum IgG responses to pneumococcal capsules and surface/virulence proteins. However, the relationship between serum IgG and the prevention of, or response to, pneumococcal nasopharyngeal colonization remains complex. Mechanisms other than serum IgG are likely to have a role but are currently poorly understood.
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Affiliation(s)
- P Turner
- Shoklo Malaria Research UnitMae Sot, Thailand
- Mahidol-Oxford Tropical Medicine Research UnitBangkok, Thailand
- Centre for Tropical Medicine, University of OxfordOxford, UK
- Corresponding author: P. Turner; Shoklo Malaria Research Unit, PO Box 46, 68/30 Ban Toong Road, Mae Sot 63110, Thailand, E-mail:
| | - C Turner
- Shoklo Malaria Research UnitMae Sot, Thailand
- Mahidol-Oxford Tropical Medicine Research UnitBangkok, Thailand
- Centre for Tropical Medicine, University of OxfordOxford, UK
| | - N Green
- Immunobiology Unit, Institute of Child Health, University College LondonLondon, UK
| | - L Ashton
- Immunobiology Unit, Institute of Child Health, University College LondonLondon, UK
| | - E Lwe
- Shoklo Malaria Research UnitMae Sot, Thailand
| | - A Jankhot
- Shoklo Malaria Research UnitMae Sot, Thailand
| | - N P Day
- Mahidol-Oxford Tropical Medicine Research UnitBangkok, Thailand
- Centre for Tropical Medicine, University of OxfordOxford, UK
| | - N J White
- Mahidol-Oxford Tropical Medicine Research UnitBangkok, Thailand
- Centre for Tropical Medicine, University of OxfordOxford, UK
| | - F Nosten
- Shoklo Malaria Research UnitMae Sot, Thailand
- Mahidol-Oxford Tropical Medicine Research UnitBangkok, Thailand
- Centre for Tropical Medicine, University of OxfordOxford, UK
| | - D Goldblatt
- Immunobiology Unit, Institute of Child Health, University College LondonLondon, UK
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9
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Turner P, Turner C, Green N, Ashton L, Lwe E, Jankhot A, Day NP, White NJ, Nosten F, Goldblatt D. Serum antibody responses to pneumococcal colonization in the first 2 years of life: results from an SE Asian longitudinal cohort study. Clin Microbiol Infect 2013. [PMID: 24255996 DOI: 10.1111/1469-0691.12431] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Assessment of antibody responses to pneumococcal colonization in early childhood may aid our understanding of protection and inform vaccine antigen selection. Serum samples were collected from mother-infant pairs during a longitudinal pneumococcal colonization study in Burmese refugees. Maternal and cord sera were collected at birth and infants were bled monthly (1–24 months of age). Nasopharyngeal swabs were taken monthly to detect colonization. Serum IgG titres to 27 pneumococcal protein antigens were measured in 2624 sera and IgG to dominant serotypes (6B, 14, 19F, 19A and 23F) were quantified in 864 infant sera. Antibodies to all protein antigens were detect ablein maternal sera. Titres to four proteins (LytB, PcpA, PhtD and PhtE) were significantly higher in mothers colonized by pneumococci at delivery. Maternally-derived antibodies to PiuA and Spr0096 were associated with delayed pneumococcal acquisition in infants in univariate,but not multivariate models. Controlling for infant age and previous homologous serotype exposure, nasopharyngeal acquisition of serotypes 19A, 23F, 14 or 19F was associated significantly with a ≥2-fold antibody response to the homologous capsule (OR 12.84, 7.52,6.52, 5.33; p <0.05). Acquisition of pneumococcal serotypes in the nasopharynx of infants was not significantly associated with a ≥2-fold rise in antibodies to any of the protein antigens studied. In conclusion, nasopharyngeal colonization in young children resulted in demonstrable serum IgG responses to pneumococcal capsules and surface/virulence proteins. However, the relationship between serum IgG and the prevention of, or response to, pneumococcal nasopharyngeal colonization remains complex. Mechanisms other than serum IgG are likely to have a role but are currently poorly understood.
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10
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Ashton L, Pudney P, Blanch E, Yakubov G. Understanding glycoprotein behaviours using Raman and Raman optical activity spectroscopies: characterising the entanglement induced conformational changes in oligosaccharide chains of mucin. Adv Colloid Interface Sci 2013; 199-200:66-77. [PMID: 23859222 DOI: 10.1016/j.cis.2013.06.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2013] [Revised: 05/27/2013] [Accepted: 06/10/2013] [Indexed: 10/26/2022]
Abstract
We illustrate the great potential of Raman and ROA spectroscopies for investigating the structure and organisation of glycoproteins and the complex matrices they can form. In combination these spectroscopic techniques are sensitive to changes in conformation revealing details of secondary and tertiary structures, probing hydrogen bonding interactions, as well as resolving side chain orientation and the absolute configuration of chiral substructures. To demonstrate this potential we have characterised the structural changes in a complex glycoprotein, mucin. Spectral changes were observed during the entanglement transition as the mucin concentration was increased. By applying two-dimensional correlation analysis (2DCos) to the ROA and Raman concentration-dependent spectral sets delicate transitions in mucin conformation could also be determined. From ~20-40 mg/ml conformational transitions assigned mainly to the sugar N-acetyl-d-galactosamine (GalNAc), which is the linking saccharide unit to the protein backbone, were monitored. Further changes in local oligosaccharide conformation above 40 mg/ml were also monitored, together with other structural transitions observed in the protein core, particularly β-structure formation. Consequently, these spectral techniques were shown to monitor the formation of transient entanglements formed by brush-brush interactions between oligosaccharide combs of mucin molecules identifying changes in both carbohydrate and protein moieties. This work clearly shows how these methods can be used to elucidate fresh insights into the complex behaviour of these large complex molecules.
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11
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Ashton L, Blanch EW. Investigation of polypeptide conformational transitions with two-dimensional Raman optical activity correlation analysis, applying autocorrelation and moving window approaches. Appl Spectrosc 2008; 62:469-475. [PMID: 18498686 DOI: 10.1366/000370208784344433] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The study of conformational transitions in polypeptides is not only important for the understanding of folding mechanisms responsible for the self-assembly of proteins but also for the investigation of the misfolding of proteins that can result in diseases including cystic fibrosis, Alzheimer's, and Parkinson's diseases. Our recent studies developing two-dimensional Raman optical activity (ROA) correlation analysis have proven to be successful in the investigation of polypeptide conformational transitions. However, the complexity of the ROA spectra, and the 2D correlation synchronous and asynchronous plots, makes data analysis detailed and complex, requiring great care in interpretation of 2D correlation rules. By utilizing the 2D correlation approaches of autocorrelation and moving windows it has been possible to gain further information from the ROA spectral data sets in a simpler and more consistent way. The most significant spectral intensity changes have been easily identified, facilitating appropriate interpretation of synchronous plots, and transition phases have been identified in the moving window plots, directly relating spectral intensity changes to the perturbation.
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Affiliation(s)
- L Ashton
- Manchester Interdisciplinary Biocentre, Faculty of Life Sciences, University of Manchester, 131 Princess Street, Manchester M1 7DN, UK.
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12
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Abstract
With people living longer, getting sicker and entering nursing home care later in their lives, the global trends point to preventing premature institution as a major public health and social care goal. Compared with the UK--Australia, Canada and the USA have a longer track record for introducing government Acts, policies and strategies which contribute to supporting older people in maintaining their health, safety and independence. They also have government Ministers for the Aged. In the UK, it is only very recently that we are witnessing new Government programmes such as the NHS Plan and Modernizing Social Services that begin to demonstrate its more determined approach to improve the life of the older person. An ageing population brings new challenges to policy-makers and planners in the statutory sectors. Various international conferences have been held to address ways in which countries are providing or developing their services, and their research regarding older people. Yet, whatever country one considers, nursing home care continues to give rise to many concerns. Developments in the USA managed care programmes have recently come under even more scrutiny from the Federal and State governments, insurance agencies, nursing home owners and, of course, older people themselves. This article raises issues that still need to be addressed in the UK. It reports briefly on an international conference (attended during the undertaking of a Winston Churchill Fellowship) which had some forward-thinking presentations addressing existing and future care needs of older people. It then concentrates on highlighting some of the current developments in the USA care system that might be learning lessons for UK policy-makers. It concludes with some additional considerations for delivering a National Service Framework for Older People in order that "The needs of older people are at the heart of the reform programme for health and social services."
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13
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Carson CF, Ashton L, Dry L, Smith DW, Riley TV. Melaleuca alternifolia (tea tree) oil gel (6%) for the treatment of recurrent herpes labialis. J Antimicrob Chemother 2001; 48:450-1. [PMID: 11533019 DOI: 10.1093/jac/48.3.450] [Citation(s) in RCA: 77] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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14
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Ashton L, Barnes A, Livingston M, Wyper D. Cingulate abnormalities associated with PANSS negative scores in first episode schizophrenia. Behav Neurol 2001; 12:93-101. [PMID: 11455046 DOI: 10.1155/2000/913731] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
There is evidence for the involvement of the cingulate gyrus in schizophrenia. We present details of a Statistical Parametric Mapping (SPM) analysis of SPECT data from the largest study (N = 39) of drug naive schizophrenic patients. The main findings are that there is decreased perfusion in the anterior cingulate during verbal fluency when patients are compared to controls (matched individually by age, gender and father's social class as determined by occupation) and also that PANSS negative scores correlate negatively with regional cerebral blood flow in the cingulate gyrus (Pearson's Correlation coefficient of r = - 0.49 and significance p< 0.005). This suggests that measurement of change of perfusion in this region could be a useful biological marker in assessing the effect of neuroleptics on negative symptoms.
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Affiliation(s)
- L Ashton
- Department of Psychiatry, Southern General Hospital, Glasgow, UK
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15
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Rhodes DI, Ashton L, Solomon A, Carr A, Cooper D, Kaldor J, Deacon N. Characterization of three nef-defective human immunodeficiency virus type 1 strains associated with long-term nonprogression. Australian Long-Term Nonprogressor Study Group. J Virol 2000; 74:10581-8. [PMID: 11044102 PMCID: PMC110932 DOI: 10.1128/jvi.74.22.10581-10588.2000] [Citation(s) in RCA: 102] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/1999] [Accepted: 08/23/2000] [Indexed: 11/20/2022] Open
Abstract
Long-term survivors (LTS) of human immunodeficiency virus type 1 (HIV-1) infection provide an opportunity to investigate both viral and host factors that influence the rate of disease progression. We have identified three HIV-1-infected individuals in Australia who have been infected for over 11 years with viruses that contain deletions in the nef and nef-long terminal repeat (nef/LTR) overlap regions. These viruses differ from each other and from other nef-defective strains of HIV-1 previously identified in Australia. One individual, LTS 3, is infected with a virus containing a nef gene with a deletion of 29 bp from the nef/LTR overlap region, resulting in a truncated Nef open reading frame. In addition to the Nef defect, only viruses containing truncated Vif open reading frames of 37 or 69 amino acids could be detected in peripheral blood mononuclear cells isolated from this patient. LTS 3 had a viral load of less than 20 copies of RNA/ml of plasma. The other two long-term survivors, LTS 9 and LTS 11, had loads of less than 200 copies of RNA/ml of plasma and are infected with viruses with larger deletions in both the nef alone and nef/LTR overlap regions. These viruses contain wild-type vif, vpu, and vpr accessory genes. All three strains of virus had envelope sequences characteristic of macrophagetropic viruses. These findings further indicate the reduced pathogenic potential of nef-defective viruses.
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Affiliation(s)
- D I Rhodes
- AIDS Molecular Biology Unit, National Centre in HIV Virology Research, Macfarlane Burnet Centre for Medical Research, Fairfield, Victoria 3078, Australia.
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16
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Barnes A, Ashton L, Livingston M, Wyper D. Cingulate abnormalities associated with PANSS negative scores in first episode schizophrenia. Neuroimage 2000. [DOI: 10.1016/s1053-8119(00)91133-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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17
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Ashton L. Child and community health in southern Chile. Paediatr Nurs 1997; 9:8-10. [PMID: 9386535 DOI: 10.7748/paed.9.8.8.s8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- L Ashton
- Loddon NHS Trust, North Hampshire Hospital, Basingstoke
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18
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Khatib R, Naber M, Shellum N, Ashton L, Knowles K, Giardina V, Wilson FM. A common source outbreak of gastroenteritis in a teaching hospital. Infect Control Hosp Epidemiol 1994; 15:534-5. [PMID: 7983347 DOI: 10.1086/646972] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
An outbreak of gastroenteritis at a large teaching hospital affected at least 52 workers. Investigation implicated a tuna salad, and the circumstances suggested Clostridium perfringens as the etiologic agent. The risk of such outbreaks may be reduced by cooling of ingredients prior to mixing and refrigeration in small steel containers.
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Affiliation(s)
- R Khatib
- St. John Hospital and Medical Center, Detroit, MI 48236
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19
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Ashton L. Planning for the ageing workforce. Occup Health (Lond) 1993; 45:299-301. [PMID: 8152712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
A changing and ageing workforce will influence how occupational health services are organised in the future. Lorraine Ashton describes demographic trends affecting the labour market.
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20
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Stanford JL, Ganapati R, Revankar CR, Lockwood D, Price J, Ashton P, Ashton L, Rees RJ. Sensitisation by mycobacteria and the effects of BCG on children attending schools in the slums of Bombay. Tubercle 1988; 69:293-8. [PMID: 3151532 DOI: 10.1016/0041-3879(88)90052-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Quadruple skin testing with new tuberculins was used to evaluate the effects of previously administered BCG Madras in children attending schools in the slums, or living in Kopri Leprosy Colony in Bombay. There were differences between schools both in the level of sensitisation of children without BCG scars and in the effects of BCG vaccination. Results obtained at one school resembled those obtained in a previous study in Agra, where BCG was thought to be ineffective. Results from the other schools and Kopri were more like those previously reported from Ahmednagar, where BCG was considered to be much more effective. Thus within the same city groups of children of the same social status may vary widely both in their contact with mycobacteria and in their capacity to benefit from BCG vaccination.
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Affiliation(s)
- J L Stanford
- School of Pathology, University College of Middlesex School of Medicine, London
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21
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Ashton L. Making use of local resources. Occup Health (Lond) 1985; 37:35. [PMID: 2580257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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22
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Abstract
A wide range of non- profit organisations are now coming to see marketing as a useful tool. How does this apply in health education and health promotion?
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23
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McCarty FJ, Rosenstock PD, Paolini JP, Micucci DD, Ashton L, Bennetts WW, Palopoli FP. Synthesis and pharmacology of a series of 1-aralkyl-3-butenylamines. J Med Chem 1968; 11:534-41. [PMID: 5656492 DOI: 10.1021/jm00309a028] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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