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Koulman A, Rennie KL, Parkington D, Tyrrell CSB, Catt M, Gkrania-Klotsas E, Wareham NJ. The development, validation and application of remote blood sample collection in telehealth programmes. J Telemed Telecare 2024; 30:731-738. [PMID: 35538704 PMCID: PMC11027437 DOI: 10.1177/1357633x221093434] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Accepted: 03/21/2022] [Indexed: 02/02/2023]
Abstract
INTRODUCTION The ability to collect blood samples remotely without the involvement of healthcare professionals is a key element of future telehealth applications. We developed and validated the application of the Drawbridge OneDraw device for use at home for blood sample collection. The device was then applied in a large population-based remote monitoring study to assess changes in SARS-CoV-2 IgG antibody levels. METHODS We tested: (1) feasibility of participants using the device at home without a healthcare professional on the upper arm and thigh sites (2) stability of the dried blood sample collected remotely (3) participant acceptability of the device compared with finger-prick and venous blood samples and the validity of SARS-CoV-2 virus antibody measurement versus venous blood sample (4) application to the Fenland COVID-19 study in which 4023 participants at 3 timepoints across 6 months. RESULTS Participant acceptability was high, with a significantly lower median perceived pain score and 76% of participants preferring the OneDraw device over the other blood collection methods. There was high level of agreement in SARS-CoV-2 virus antibody results with venous blood samples in 120 participants (Cohen's kappa 0.68 (95% CI 0.56, 0.83). In the Fenland COVID-19 study, 92% of participants returned a sample at baseline (3702/4023), 89% at 3 months (3492/3918) and 93% at 6 months (3453/3731), with almost all samples received successfully processed (99.9%). DISCUSSION The OneDraw device enables a standardised blood sample collection at home by participants themselves. Due to its ease-of-use and acceptability the OneDraw device is particularly useful in telehealth approaches where multiple samples need to be collected.
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Affiliation(s)
- Albert Koulman
- Albert Koulman and Kirsten Rennie contributed equally to this paper
- MRC Epidemiology Unit, University of Cambridge School of Clinical Medicine, Institute of Metabolic Science, Cambridge Biomedical Campus, Cambridge, UK
| | - Kirsten L Rennie
- Albert Koulman and Kirsten Rennie contributed equally to this paper
- MRC Epidemiology Unit, University of Cambridge School of Clinical Medicine, Institute of Metabolic Science, Cambridge Biomedical Campus, Cambridge, UK
| | - Damon Parkington
- MRC Epidemiology Unit, University of Cambridge School of Clinical Medicine, Institute of Metabolic Science, Cambridge Biomedical Campus, Cambridge, UK
| | - Carina SB Tyrrell
- MRC Epidemiology Unit, University of Cambridge School of Clinical Medicine, Institute of Metabolic Science, Cambridge Biomedical Campus, Cambridge, UK
| | - Michael Catt
- MRC Epidemiology Unit, University of Cambridge School of Clinical Medicine, Institute of Metabolic Science, Cambridge Biomedical Campus, Cambridge, UK
| | - Effrossyni Gkrania-Klotsas
- MRC Epidemiology Unit, University of Cambridge School of Clinical Medicine, Institute of Metabolic Science, Cambridge Biomedical Campus, Cambridge, UK
- Department of Infectious Diseases, Cambridge University Hospital NHS Trust, Cambridge Biomedical Campus, Cambridge, UK
| | - Nicholas J Wareham
- MRC Epidemiology Unit, University of Cambridge School of Clinical Medicine, Institute of Metabolic Science, Cambridge Biomedical Campus, Cambridge, UK
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Heughebaert L, Stove CP. Is the stability of folates in dried blood microsamples sufficient to perform home-sampling studies? Analyst 2024; 149:895-908. [PMID: 38189100 DOI: 10.1039/d3an01004j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
Dried blood microsampling is increasingly used for home-sampling and epidemiological studies because of its multiple advantages, including an often greatly improved analyte stability. However, a critical assessment of the stability under realistic conditions should always be performed as part of the validation, especially for unstable molecules like folates (vitamin B9). Here, the objective was to determine whether folate stability in dried blood microsamples is sufficient to allow the set-up of home-sampling studies for the monitoring of folate status in e.g., women of reproductive age. An extensive set of stability experiments was performed to evaluate the stability of the main folate vitamer 5-methyltetrahydrofolate (5MTHF), its oxidation product MeFOX and the minor non-methyl folate vitamers 10-formylfolic acid (10FoFA), 5,10-methenyltetrahydrofolate (5,10CH+THF) and tetrahydrofolate (THF) in dried blood microsamples using volumetric absorptive microsampling (VAMS) or regular dried blood spots (DBS). The evaluations included (EDTA-anticoagulated blood was collected from a single donor measured in four replicates per condition and time point): (i) the effect of temperature (-20 °C, 4 °C, ambient temperature and 37 °C), (ii) the effect of light (during drying and storage) and humidity, and (iii) the effect of storage under vacuum and pretreatment of the microsamples with stabilizing agents on folate stability. At -20 °C and 4 °C, all folate levels were within 85 to 115% of the baseline value up till two weeks of storage in both VAMS samples and DBS. However, at room temperature the stability of the analyzed folates was only consistently observed up till three days in VAMS samples, and for none of the folates at 37 °C. Humidity had a major impact on 5,10CH+THF stability, but this could be easily improved by using desiccant. Both vacuum treatment and pretreatment of microsamples with 0.1% DL-dithiothreitol and 5% butylated hydroxytoluene improved the stability at room temperature in VAMS samples, but these effects were limited at 37 °C and in DBS. Overall, the stability of the individual folate vitamers proved to be challenging and strongly temperature- and time-dependent. Nonetheless, if controlled transport (temperature and duration) can be assured, the set-up of home-sampling studies to evaluate the folate status using dried blood microsamples can still be beneficial.
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Affiliation(s)
- Liesl Heughebaert
- Laboratory of Toxicology, Department of Bioanalysis, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium.
| | - Christophe Pol Stove
- Laboratory of Toxicology, Department of Bioanalysis, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium.
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Wang HB, Xiao X, Dai W, Peng R, Le J, Feng YQ, Wang ST. Rapid LC-MS/MS detection of 25-hydroxyvitamin D in dried blood spots. Anal Chim Acta 2023; 1283:341964. [PMID: 37977788 DOI: 10.1016/j.aca.2023.341964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 09/19/2023] [Accepted: 10/25/2023] [Indexed: 11/19/2023]
Abstract
BACKGROUND The detection of 25-hydroxyvitamin D (25OHD) from dried blood spots (DBS) has been widely studied. However, the existing pretreatment methods suffer from limitations in terms of throughput (usually exceeding 2 h), complexity (involving liquid-liquid extraction or solid-phase extraction), and contamination (including multiple steps of organic solvent evaporation). RESULTS We first released 25OHD from DBS samples by 50% acetonitrile solution through ultrasonication. Subsequently, the cold-induced phase separation technique was introduced for in-situ concentration and purification. Afterward, the PTAD derivatization of 25OHD was performed directly, profiting from the high acetonitrile content in the concentrated solution. In the end, the resulting solution was submitted to LC-MS/MS for quantification. The established LC-MS/MS methodology possessed favorable analytical performance, possessing lower limit of quantification of 1 ng/mL pointing to plasma, accuracy of 86.8-110.1% and imprecision of 5.4-16.8%. Method comparison with plasma samples demonstrated that over 93% of the detections met the acceptance limit for cross-validation of ±20%. SIGNIFICANCE AND NOVELTY The novel sample preparation can be finished within 15 min and eliminated the traditional steps of extraction and organic solvent evaporation. Based on this high-throughput, reliable and applicable LC-MS/MS method, the detection of 25OHD in DBS samples can be better achieved for clinical patients and researchers with relevant demands.
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Affiliation(s)
- Hai-Bo Wang
- Department of Clinical Laboratory, Renmin Hospital of Wuhan University, China.
| | - Xuan Xiao
- Department of Clinical Laboratory, Renmin Hospital of Wuhan University, China.
| | - Wen Dai
- Department of Clinical Laboratory, Renmin Hospital of Wuhan University, China.
| | - Rui Peng
- Department of Clinical Laboratory, Renmin Hospital of Wuhan University, China.
| | - Juan Le
- Department of Clinical Laboratory, Renmin Hospital of Wuhan University, China.
| | - Yu-Qi Feng
- School of Public Health, Wuhan University, Wuhan, 430060, China.
| | - Shao-Ting Wang
- Department of Clinical Laboratory, Renmin Hospital of Wuhan University, China.
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Ma Y, Yu S, Mu D, Cheng J, Qiu L, Cheng X. Liquid chromatography-tandem mass spectrometry in fat-soluble vitamin deficiency. Clin Chim Acta 2023; 548:117469. [PMID: 37419302 DOI: 10.1016/j.cca.2023.117469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 06/30/2023] [Accepted: 07/04/2023] [Indexed: 07/09/2023]
Abstract
Fat-soluble vitamins, including vitamins A, D, E, and K, are essential for maintaining normal body function and metabolism. Fat-soluble vitamin deficiency may lead to bone diseases, anemia, bleeding, xerophthalmia, etc. Early detection and timely interventions are significant for preventing vitamin deficiency-related diseases. Liquid chromatography-tandem mass spectrometry (LC-MS/MS) is developing into a potent instrument for the precise detection of fat-soluble vitamins due to its high sensitivity, high specificity, and high resolution.
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Affiliation(s)
- Yichen Ma
- Department of Laboratory Medicine, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Science, Beijing, China
| | - Songlin Yu
- Department of Laboratory Medicine, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Science, Beijing, China
| | - Danni Mu
- Department of Laboratory Medicine, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Science, Beijing, China
| | - Jin Cheng
- Department of Laboratory Medicine, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Science, Beijing, China
| | - Ling Qiu
- Department of Laboratory Medicine, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Science, Beijing, China; State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China.
| | - Xinqi Cheng
- Department of Laboratory Medicine, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Science, Beijing, China.
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Malcomson FC, Mathers JC. Translation of nutrigenomic research for personalised and precision nutrition for cancer prevention and for cancer survivors. Redox Biol 2023; 62:102710. [PMID: 37105011 PMCID: PMC10165138 DOI: 10.1016/j.redox.2023.102710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 03/29/2023] [Accepted: 04/21/2023] [Indexed: 04/29/2023] Open
Abstract
Personalised and precision nutrition uses information on individual characteristics and responses to nutrients, foods and dietary patterns to develop targeted nutritional advice that is more effective in improving the diet and health of each individual. Moving away from the conventional 'one size fits all', such targeted intervention approaches may pave the way to better population health, including lower burden of non-communicable diseases. To date, most personalised and precision nutrition approaches have been focussed on tackling obesity and cardiometabolic diseases with limited efforts directed to cancer prevention and for cancer survivors. Advances in understanding the biological basis of cancer and of the role played by diet in cancer prevention and in survival after cancer diagnosis, mean that it is timely to test and to apply such personalised and precision nutrition approaches in the cancer area. This endeavour can take advantage of the enhanced understanding of interactions between dietary factors, individual genotype and the gut microbiome that impact on risk of, and survival after, cancer diagnosis. Translation of these basic research into public health action should include real-time acquisition of nutrigenomic and related data and use of AI-based data integration methods in systems approaches that can be scaled up using mobile devices.
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Affiliation(s)
- F C Malcomson
- Human Nutrition and Exercise Research Centre, Centre for Healthier Lives, Population Health Sciences Institute, Newcastle University, Newcastle Upon Tyne, UK
| | - J C Mathers
- Human Nutrition and Exercise Research Centre, Centre for Healthier Lives, Population Health Sciences Institute, Newcastle University, Newcastle Upon Tyne, UK.
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Fletcher J, Brown M, Hewison M, Swift A, Cooper SC. Prevalence of vitamin D deficiency and modifiable risk factors in patients with Crohn's disease: A prospective observational study. J Adv Nurs 2023; 79:205-214. [PMID: 36281072 DOI: 10.1111/jan.15476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 09/20/2022] [Accepted: 10/12/2022] [Indexed: 12/15/2022]
Abstract
AIMS To determine the prevalence of vitamin D deficiency in adults with Crohn's Disease (CD) in Birmingham, UK (latitude 52.4°N, -1.9°E) and identify modifiable risk factors. DESIGN/METHOD A nurse-led, single-centre, prospective study was conducted over 5 months in 2019 and 2020 in outpatients with CD, at a tertiary referral hospital in Birmingham UK. Vitamin D (25OHD) levels were measured at a single timepoint by a dried blood spot sample. Modifiable risk factor data were collected including intake of vitamin D-containing foods, use of vitamin D supplements, sun exposure and current smoking. RESULTS Total 150 participants (53.3% male, 79.3% white British). Vitamin D deficiency (25OHD <50 nmol/L) was found in 53.3%. 32.7% of participants took over-the-counter vitamin D supplements and 20.7% used prescribed supplements. We found that diets were generally poor in relation to vitamin D-rich foods. In terms of sun exposure, few (18%) had visited a sunny country recently, and few (6%) covered their whole body with clothing. Most used High Sun Protection Factor (80%) with a median grade of SPF 45. CONCLUSION Patients with CD are at high risk of vitamin D deficiency as defined by 25OHD < 50 nmol/L, with the prevalence of deficiency being highest during the winter months. Patients with CD in the UK are unlikely to maintain vitamin D levels from sunlight exposure, dietary sources or over-the-counter supplements. IMPACT Patients with Crohn's Disease are at high risk of developing vitamin D deficiency but there is little data from the UK at this latitude. We demonstrate the prevalence and severity of vitamin D deficiency in people with Crohn's Disease in the UK. The prevalence of vitamin D deficiency in this group is high and warrants monitoring by nurses and clinical teams. Nurses and clinical teams should consider strategies for vitamin D supplementation in patients with Crohn's Disease.
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Affiliation(s)
- Jane Fletcher
- Nutrition Nurses, University Hospital Birmingham NHS Trust, Queen Elizabeth Hospital Birmingham, Birmingham, UK.,School of Nursing, Institute of Clinical Sciences, University of Birmingham, Birmingham, UK
| | - Michaela Brown
- Liverpool Clinical Trials Centre, Alder Hey Children's NHS Trust, Liverpool, UK
| | - Martin Hewison
- Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK
| | - Amelia Swift
- School of Nursing, Institute of Clinical Sciences, University of Birmingham, Birmingham, UK
| | - Sheldon C Cooper
- Department of Gastroenterology, University Hospital Birmingham NHS Trust, Queen Elizabeth Hospital Birmingham, Birmingham, UK
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Yonel Z, Kuningas K, Sharma P, Dutton M, Jalal Z, Cockwell P, Webber J, Narendran P, Dietrich T, Chapple ILC. Concordance of three point of care testing devices with clinical chemistry laboratory standard assays and patient-reported outcomes of blood sampling methods. BMC Med Inform Decis Mak 2022; 22:248. [PMID: 36138408 PMCID: PMC9493167 DOI: 10.1186/s12911-022-01999-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 09/16/2022] [Indexed: 11/13/2022] Open
Abstract
Background Point of care testing (POCT) devices have been developed to facilitate immediate results with the potential to aid screening for new disease and enable patients to self-monitor their disease. Non-communicable diseases (NCDs) are the major cause of mortality globally and are increasing in prevalence as the population ages. Allied health care professionals (AHPs) are skilled in undertaking risk assessment and delivering preventative advice, providing opportunities to access large proportions of the population who may not visit their doctor, within non-traditional community settings. There is evidence of high levels of support from public, patients and health professionals for engaging AHPs in risk-targeted early case detection of certain NCDs. Thus, POCT devices offer a potential alternative to traditional venous blood collection, as novel care pathways for increasing early case detection and access to preventative care. The objectives of this study were to: (i) determine the concordance of the specific POCT devices with laboratory-based standard assays employed within clinical biochemistry laboratories. (ii) compare the sampling experience of both methods via patient-reported experiences. Methods A prospective, two-centre study was undertaken involving 158 participants who provided informed consent. Venous blood was collected for traditional assays of HbA1c, creatinine/ estimated Glomerular-Filtration-Rate (eGFR) and vitamin-D. Capillary blood was collected by finger prick test and also assayed for the same biochemical indices (Nova StatSensor (creatinine/eGFR); Siemens DCA-Vantage (HbA1C); CityAssays (vitamin-D)). All users were provided with device training. Participants reported any discomfort experienced by each simultaneously applied method (randomised in order) via a 100 mm Visual-Analogue-Scale. Results Results for each POCT device and the laboratory standard were analysed by Bland-Altman plots to determine assay concordance. POCT devices demonstrated good concordance with laboratory testing, with at least 95% of all samples being within two standard deviations, for each of the devices tested. The majority of participants reported less discomfort with POCT than venepuncture, with the average reported discomfort being 17/100 mm less for POCT compared to venous blood sample collection on the visual analogue scale. Conclusions The POCT devices demonstrated acceptable concordance with laboratory-based assays, and patients reported lower levels of discomfort compared to traditional means of blood collection. This study demonstrates the potential of using these devices as acceptable methods for opportunistic testing of “at-risk” individuals within non-traditional community care settings.
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Affiliation(s)
- Z Yonel
- The Periodontal Research Group, School of Dentistry, University of Birmingham, 5 Mill Pool Way, Birmingham, B5 7EG, UK.
| | - K Kuningas
- Department of Renal Medicine, University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital Birmingham, Mindelsohn Way, Edgbaston, Birmingham, B15 2GW, UK
| | - P Sharma
- The Periodontal Research Group, School of Dentistry, University of Birmingham, 5 Mill Pool Way, Birmingham, B5 7EG, UK
| | - M Dutton
- Department of Renal Medicine, University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital Birmingham, Mindelsohn Way, Edgbaston, Birmingham, B15 2GW, UK
| | - Z Jalal
- School of Pharmacy, University of Birmingham, Birmingham, UK
| | - P Cockwell
- Department of Renal Medicine, University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital Birmingham, Mindelsohn Way, Edgbaston, Birmingham, B15 2GW, UK
| | - J Webber
- Diabetes Unit, University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital Birmingham, Mindelsohn Way, Edgbaston, Birmingham, B15 2GW, UK
| | - P Narendran
- Diabetes Unit, University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital Birmingham, Mindelsohn Way, Edgbaston, Birmingham, B15 2GW, UK
| | - T Dietrich
- The Periodontal Research Group, School of Dentistry, University of Birmingham, 5 Mill Pool Way, Birmingham, B5 7EG, UK
| | - I L C Chapple
- The Periodontal Research Group, School of Dentistry, University of Birmingham, 5 Mill Pool Way, Birmingham, B5 7EG, UK
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Hergott DEB, Owalla TJ, Balkus JE, Apio B, Lema J, Cemeri B, Akileng A, Seilie AM, Chavtur C, Staubus W, Chang M, Egwang TG, Murphy SC. Feasibility of community at-home dried blood spot collection combined with pooled reverse transcription PCR as a viable and convenient method for malaria epidemiology studies. Malar J 2022; 21:221. [PMID: 35836179 PMCID: PMC9284728 DOI: 10.1186/s12936-022-04239-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 06/26/2022] [Indexed: 01/08/2023] Open
Abstract
Background Many Plasmodium infections in endemic regions exist at densities below the limit of detection of standard diagnostic tools. These infections threaten control efforts and may impact vaccine and therapeutic drug studies. Simple, cost-effective methods are needed to study the natural history of asymptomatic submicroscopic parasitaemia. Self-collected dried blood spots (DBS) analysed using pooled and individual quantitative reverse transcription polymerase chain reaction (qRT-PCR) provide such a solution. Here, the feasibility and acceptability of daily at-home DBS collections for qRT-PCR was studied to better understand low-density infections. Methods Rapid diagnostic test (RDT)-negative individuals in Katakwi District, northeastern Uganda, were recruited between April and May 2021. Venous blood samples and clinic-collected DBS were taken at enrollment and at four weekly clinic visits. Participants were trained in DBS collection and asked to collect six DBS weekly between clinic visits. Opinions about the collection process were solicited using daily Diary Cards and a Likert scale survey at the final study visit. Venous blood and DBS were analysed by Plasmodium 18S rRNA qRT-PCR. The number of participants completing the study, total DBS collected, and opinions of the process were analysed to determine compliance and acceptability. The human internal control mRNA and Plasmodium 18S rRNA were evaluated for at-home vs. clinic-collected DBS and venous blood to assess quality and accuracy of at-home collected samples. Results One-hundred two adults and 29 children were enrolled, and 95 and 26 completed the study, respectively. Three individuals withdrew due to pain or inconvenience of procedures. Overall, 96% of participants collected ≥ 16 of 24 at-home DBS, and 87% of DBS contained ≥ 40 µL of blood. The procedure was well tolerated and viewed favourably by participants. At-home collected DBS were acceptable for qRT-PCR and showed less than a one qRT-PCR cycle threshold shift in the human control mRNA compared to clinic-collected DBS. Correlation between Plasmodium falciparum 18S rRNA from paired whole blood and DBS was high (R = 0.93). Conclusions At-home DBS collection is a feasible, acceptable, and robust method to obtain blood to evaluate the natural history of low-density Plasmodium infections by qRT-PCR. Supplementary Information The online version contains supplementary material available at 10.1186/s12936-022-04239-x.
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Affiliation(s)
- Dianna E B Hergott
- Department of Laboratory Medicine and Pathology, University of Washington, 750 Republican St., F870, Seattle, WA, 98109, USA.,Department of Epidemiology, School of Public Health, University of Washington, Seattle, WA, USA
| | - Tonny J Owalla
- Med Biotech Laboratories, P.O. Box 9364, Kampala, Uganda
| | - Jennifer E Balkus
- Department of Epidemiology, School of Public Health, University of Washington, Seattle, WA, USA
| | | | - Jimmy Lema
- Med Biotech Laboratories, P.O. Box 9364, Kampala, Uganda
| | - Barbara Cemeri
- Med Biotech Laboratories, P.O. Box 9364, Kampala, Uganda
| | - Andrew Akileng
- Med Biotech Laboratories, P.O. Box 9364, Kampala, Uganda
| | - Annette M Seilie
- Department of Laboratory Medicine and Pathology, University of Washington, 750 Republican St., F870, Seattle, WA, 98109, USA.,Center for Emerging and Re-Emerging Infectious Diseases, University of Washington, Seattle, WA, USA
| | - Chris Chavtur
- Department of Laboratory Medicine and Pathology, University of Washington, 750 Republican St., F870, Seattle, WA, 98109, USA.,Center for Emerging and Re-Emerging Infectious Diseases, University of Washington, Seattle, WA, USA
| | - Weston Staubus
- Department of Laboratory Medicine and Pathology, University of Washington, 750 Republican St., F870, Seattle, WA, 98109, USA.,Center for Emerging and Re-Emerging Infectious Diseases, University of Washington, Seattle, WA, USA
| | - Ming Chang
- Department of Laboratory Medicine and Pathology, University of Washington, 750 Republican St., F870, Seattle, WA, 98109, USA.,Center for Emerging and Re-Emerging Infectious Diseases, University of Washington, Seattle, WA, USA
| | | | - Sean C Murphy
- Department of Laboratory Medicine and Pathology, University of Washington, 750 Republican St., F870, Seattle, WA, 98109, USA. .,Center for Emerging and Re-Emerging Infectious Diseases, University of Washington, Seattle, WA, USA. .,Department of Microbiology, University of Washington, Seattle, WA, USA.
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Alexandridou A, Schorr P, Stokes CS, Volmer DA. Analysis of vitamin D metabolic markers by mass spectrometry: Recent progress regarding the "gold standard" method and integration into clinical practice. MASS SPECTROMETRY REVIEWS 2021. [PMID: 34967037 DOI: 10.1002/mas.21768] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 12/03/2021] [Accepted: 12/13/2021] [Indexed: 06/14/2023]
Abstract
Liquid chromatography/tandem mass spectrometry is firmly established today as the gold standard technique for analysis of vitamin D, both for vitamin D status assessments as well as for measuring complex and intricate vitamin D metabolic fingerprints. While the actual mass spectrometry technology has seen only incremental performance increases in recent years, there have been major, very impactful changes in the front- and back-end of MS-based vitamin D assays; for example, the extension to new types of biological sample matrices analyzed for an increasing number of different vitamin D metabolites, novel sample preparation techniques, new powerful chemical derivatization reagents, as well the continued integration of high resolution mass spectrometers into clinical laboratories, replacing established triple-quadrupole instruments. At the same time, the sustainability of mass spectrometry operation in the vitamin D field is now firmly established through proven analytical harmonization and standardization programs. The present review summarizes the most important of these recent developments.
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Affiliation(s)
| | - Pascal Schorr
- Department of Bioanalytical Chemistry, Humboldt University Berlin, Berlin, Germany
| | - Caroline S Stokes
- Food and Health Research Group, Faculty of Life Sciences, Humboldt-Universität zu Berlin, Berlin, Germany
- Department of Molecular Toxicology, German Institute of Human Nutrition, Potsdam-Rehbrücke, Germany
| | - Dietrich A Volmer
- Department of Bioanalytical Chemistry, Humboldt University Berlin, Berlin, Germany
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Jones KS, Meadows SR, Chamberlain K, Parkington DA, Collins D, Page P, Koulman A. Delayed Processing of Chilled Whole Blood for 24 Hours Does Not Affect the Concentration of the Majority of Micronutrient Status Biomarkers. J Nutr 2021; 151:3524-3532. [PMID: 34302347 PMCID: PMC8564691 DOI: 10.1093/jn/nxab267] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 06/07/2021] [Accepted: 07/21/2021] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND The measurement of micronutrient status is essential to understand the health of individuals and populations, but there are limited data on the stability of micronutrients in whole blood. OBJECTIVES The objective was to investigate the effects of delayed processing of whole blood on the stability of 25 micronutrient and selected clinical biomarkers. METHODS Blood from 16 healthy adults was collected into EDTA, lithium heparin (LH), or serum tubes. Samples were processed within 2 hours of collection ("2-hour processed") or mailed overnight (boxed with frozen cold packs) before processing ("24-hour processed"). Micronutrient and clinical biomarker concentrations were quantified with validated methods. The concentration percentage difference between the 2- and 24-hour processed samples was calculated and was compared against quality specifications determined from intra- and interindividual variations. RESULTS All analytes had a sample type where the percentage difference concentration between 2-hour and 24-hour processed samples was ≤4% and was acceptable based on calculated limits, including for biomarkers of vitamin A, vitamin D, thiamin, folate, vitamin B-12, iron (ferritin), and zinc status and for selected clinical markers, C-reactive protein, HDL and total cholesterol, and triglycerides. EDTA plasma vitamin C was lower compared to the 2-hour processed sample (geometric mean, 43%; 95% CI: 36%-49%). Pyridoxal-5-phosphate (vitamin B-6 biomarker) decreased, with differences from the 2-hour processed samples of -8% (95% CI: -13% to -2%) and -14% (95% CI: -18% to -9%) in LH plasma and serum, respectively. CONCLUSIONS In blood collected from adult participants, delayed processing of chilled whole blood for 24 hours did not materially affect the measured concentrations of the majority of micronutrients and selected clinical biomarkers. This suggests that for these analytes, adherence to a 2-hour processing protocol may be unnecessary. This knowledge is valuable and may help to simplify logistics for sample transport and processing of blood samples for micronutrient status assessment.
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Affiliation(s)
| | - Sarah R Meadows
- Nutritional Biomarker Laboratory, Medical Research Council Epidemiology Unit, University of Cambridge, Cambridge, UK,Medical Research Council Elsie Widdowson Laboratory, Cambridge, UK
| | | | - Damon A Parkington
- Nutritional Biomarker Laboratory, Medical Research Council Epidemiology Unit, University of Cambridge, Cambridge, UK
| | - Dave Collins
- Medical Research Council Epidemiology Unit, University of Cambridge, Cambridge, UK
| | - Polly Page
- Medical Research Council Elsie Widdowson Laboratory, Cambridge, UK,Medical Research Council Epidemiology Unit, University of Cambridge, Cambridge, UK
| | - Albert Koulman
- Nutritional Biomarker Laboratory, Medical Research Council Epidemiology Unit, University of Cambridge, Cambridge, UK
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11
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Kleijne VD, Kohler I, C Heijboer A, Ackermans MT. Solutions for hematocrit bias in dried blood spot hormone analysis. Bioanalysis 2021; 13:1293-1308. [PMID: 34470479 DOI: 10.4155/bio-2021-0119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Over the last years, dried blood spot (DBS) sampling has gained significant interest due to development of analytical techniques combined with DBS, the simplicity and low cost of the method. Despite its wide use, DBS sampling can lead to inaccurate results due to the impact of the hematocrit (Hct) on the analysis. Some analytes have shown to be hardly impacted by Hct values. However, in other cases, a significant impact of Hct is observed, which requires the use of alternative approaches to circumvent this issue. This review describes the possible impact of Hct-related bias in DBS sampling in the context of hormone analysis and discusses the different methodologies that can be used to overcome this bias to ensure accurate results.
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Affiliation(s)
- Vera de Kleijne
- Department of Clinical Chemistry, Endocrine Laboratory, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Isabelle Kohler
- Division of BioAnalytical Chemistry, Amsterdam Institute of Molecular & Life Sciences, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
- Center for Analytical Sciences Amsterdam, Amsterdam, The Netherlands
| | - Annemieke C Heijboer
- Department of Clinical Chemistry, Endocrine Laboratory, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
- Department of Clinical Chemistry, Endocrine Laboratory, Amsterdam UMC, Vrije Universiteit Amsterdam, The Netherlands
| | - Mariëtte T Ackermans
- Department of Clinical Chemistry, Endocrine Laboratory, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
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12
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Zakaria R, Allen KJ, Koplin JJ, Roche P, Greaves RF. Candidate reference method for determination of vitamin D from dried blood spot samples. Clin Chem Lab Med 2021; 58:817-827. [PMID: 31348755 DOI: 10.1515/cclm-2019-0397] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Accepted: 06/12/2019] [Indexed: 11/15/2022]
Abstract
Background The current millennium has seen an explosion in vitamin D testing with the overarching aim of requests to clinically stratify patients as replete or deficient in vitamin D. At a population level, dried blood spot (DBS) sampling offers a less invasive and more practical application for assessment of vitamin D status. We have therefore aimed to develop a sensitive and robust DBS vitamin D method that is traceable to serum for use in population-based studies. Methods Blood spots, calibrators and controls were prepared by punching a 3.2 mm DBS from filter paper and placed into a 96-well micro-plate. The DBS disk was eluted with a combination of water-methanol and internal standard (ISTD) solution followed by supported-liquid extraction and derivatisation. The extract was analysed by liquid-chromatography tandem-mass spectrometry in positive electrospray-ionisation mode with 732.5 > 673.4 and 738.4 > 679.4 m/z ion-transitions for derivatised vitamin D and the ISTD, respectively. Vitamin D results were made traceable to the National Institute of Standards and Technology reference material through the inclusion of Chromsystems vitamin D calibrators. Results 25-Hydroxy-vitamin D3 and its related ISTD were detected at a retention time of 7 min. The seven-point calibration-curve consistently demonstrated a coefficient of determination of 0.99 with an experimentally determined reportable range of 0.5-376 nmol/L. Method validation studies using DBS samples demonstrated 12.9% between-assay imprecision at 45 nmol/L, 84% average recovery and high correlation with plasma vitamin D (correlation coefficient = 0.86). Conclusions We have successfully developed an analytical method for vitamin D quantitation from DBSs which will be applied to our population-based vitamin D research study. This approach improves traceability of DBS results and potentially could be used broadly for other DBS measurands that require comparison to serum/plasma for their interpretation.
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Affiliation(s)
- Rosita Zakaria
- School of Health and Biomedical Sciences, RMIT University, Bundoora, Victoria, Australia.,Murdoch Children's Research Institute, Parkville, Victoria, Australia
| | - Katrina J Allen
- Murdoch Children's Research Institute, Parkville, Victoria, Australia
| | - Jennifer J Koplin
- Murdoch Children's Research Institute, Parkville, Victoria, Australia.,Department of Paediatrics, University of Melbourne, Parkville, Victoria, Australia.,Melbourne School of Population and Global Health, University of Melbourne, Parkville, Victoria, Australia
| | - Peter Roche
- School of Health and Biomedical Sciences, RMIT University, Bundoora, Victoria, Australia
| | - Ronda F Greaves
- School of Health and Biomedical Sciences, RMIT University, Bundoora, Victoria, Australia.,Department of Paediatrics, University of Melbourne, Parkville, Victoria, Australia.,Victorian Clinical Genetics Services, Murdoch Children's Research Institute, Parkville, Victoria 3052, Australia
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13
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Nybo M, Fruekilde PN, Andersen-Ranberg K. Measurement of vitamin D in dried blood spots stored under different temperature conditions. Ann Clin Biochem 2021; 58:461-467. [PMID: 33874736 DOI: 10.1177/00045632211013870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND As part of the Survey of Health, Ageing and Retirement in Europe (SHARE) study, dried blood spot samples were obtained for measurement of potential biological biomarkers, among those vitamin D. Unfortunately, no studies describe the impact of high temperatures on dried blood spot samples and vitamin D measurements. MATERIALS AND METHODS Capillary samples were collected on dried blood spot cards from 40 outpatients (median age 78 years) along with venous blood samples. To mimic the different environmental and temporal challenges during collection and shipment until final storage in the SHARE study, dried blood spot cards were stored at different temperatures, at time span and with/without freeze-thaw. Vitamin D concentrations in venous plasma samples were measured by conventional immunoassay (on Architect i2000SR), while vitamin D concentrations in dried blood spot samples were measured using LC-MS/MS with a well-described extraction method and with relevant calibration and comparison with a reference method. RESULTS Vitamin D measured in dried blood spot samples did not differ significantly from venous plasma measurements under the different storage conditions tested. The optimal vitamin D correlation between the two matrices was by storage at either 21°C or 35°C for four days (r = 0.9060 and 0.9026, respectively). Freeze-thaw of the dried blood spot samples did not have any significant effect. CONCLUSION We find that vitamin D measured in dried blood spot samples do not differ significantly from venous plasma measurements despite storage at different temperatures and freeze-thaw, which enables the use of dried blood spot in multicentre studies taking place under alternating temperature conditions.
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Affiliation(s)
- Mads Nybo
- Department of Clinical Biochemistry and Pharmacology, Odense University Hospital, Odense, Denmark
| | - Palle N Fruekilde
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Karen Andersen-Ranberg
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark.,Danish Ageing Research Center (DARC), University of Southern Denmark (SDU), Odense, Denmark
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14
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Uday S, Naseem S, Large J, Denmeade R, Goddard P, Preece MA, Dunn R, Fraser W, Tang JCY, Högler W. Failure of national antenatal vitamin D supplementation programme puts dark skinned infants at highest risk: A newborn bloodspot screening study. Clin Nutr 2020; 40:3542-3551. [PMID: 33358424 DOI: 10.1016/j.clnu.2020.12.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 12/07/2020] [Accepted: 12/07/2020] [Indexed: 11/27/2022]
Abstract
OBJECTIVES To determine the prevalence of vitamin D deficiency on dried blood spots (DBS) obtained at newborn blood spot screening (NBS) and thereby test the efficacy of the UK national antenatal supplementation programme in an increasingly ethnically diverse English population. To evaluate the seasonal and ethnic variation in neonatal plasma 25 hydoxyvitamin D (25OHD) and its determinants. DESIGN Three thousand random DBS samples received at a single regional newborn screening laboratory (52° N) over two one-week periods, one in winter (February 2019) and one in summer (August 2019), were collected. Data was collected from NBS cards on birth weight, gestational age, maternal age, ethnicity, and post code which was replaced with index of multiple deprivation (IMD). 25OHD concentrations were measured on 6 mm sub-punch from DBS using quantitative liquid chromatography tandem mass spectrometry adjusted to equivalent plasma values. 25OHD variation with season was assessed using Mann-Whitney U test and ethnic groups compared using Kruskal-Wallis test. Linear regression was used to assess the determinants of 25OHD concentrations. RESULTS 25OHD measurements were available in 2999 (1580 males) subjects [1499 winter-born and 1500 summer-born]. The majority were white British (59.1%) and born at term (mean ± SD gestational age of 38.8 ± 1.8 weeks) with a mean (±SD) birth weight of 3306 (±565) grams. The overall prevalence of vitamin D deficiency [25OHD<30 nmol/L (12 μg/L)] was 35.7% (n = 1070) and insufficiency [30-50 nmol/L (12-20 μg/L)] 33.7% (n = 1010). The median (IQR) 25OHD concentration was significantly lower in the winter-born compared to summer-born [29.1 (19.8, 40.6) vs 49.2 (34.3, 64.8) nmol/L respectively; p < 0.001]. Across both seasons, when compared to white British babies (41.6 nmol/L), the median 25OHD concentrations were significantly lower in babies of black (30.3 nmol/L; p < 0.001), Asian (31.3 nmol/L; p < 0.001), any other mixed (32.9 nmol/L; p < 0.001), mixed white and black (33.7 nmol/L; p < 0.05) and any other white (37.7 nmol/L; p < 0.05) ethnicity. The proportion of deficiency was also higher in babies of Asian (48%), black (47%) and mixed ethnicity (38-44%) compared to any other white (34%) or white British (30%) ethnicity. Season of birth, ethnicity, gestation and maternal age accounted for almost 24% of the variation in 25OHD concentrations. CONCLUSION The current UK antenatal supplementation programme fails to protect newborns from vitamin D deficiency, especially those from minority ethnic groups who are at high risk of vitamin D deficiency. Nearly 70% of all newborns and 85% of winter-borns had 25OHD concentrations below 50 nmol/L (20 μg/L). Almost 50% of babies of Black or Asian origin were deficient at birth, which explains their high risk of hypocalcaemic complications and rickets if left unsupplemented. Our findings call for an immediate review of the delivery of antenatal and infant vitamin D supplementation programmes and implementation of food fortification in the long term.
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Affiliation(s)
- Suma Uday
- Department of Endocrinology and Diabetes, Birmingham Women's and Children's Hospital, Steelhouse Lane, Birmingham, B4 6NH, UK; Institute of Metabolism and Systems Research, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.
| | - Sunia Naseem
- College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Jamie Large
- College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Russell Denmeade
- Department of Newborn Screening and Biochemical Genetics, Birmingham Women's and Children's Hospital, Steelhouse Lane, Birmingham, B4 6NH, UK
| | - Philippa Goddard
- Department of Newborn Screening and Biochemical Genetics, Birmingham Women's and Children's Hospital, Steelhouse Lane, Birmingham, B4 6NH, UK
| | - Mary Anne Preece
- Department of Newborn Screening and Biochemical Genetics, Birmingham Women's and Children's Hospital, Steelhouse Lane, Birmingham, B4 6NH, UK
| | - Rachel Dunn
- Department of Medicine, Norwich Medical School, University of East Anglia, Norwich Research Park, Norwich, NR4 7UQ, UK
| | - William Fraser
- Department of Medicine, Norwich Medical School, University of East Anglia, Norwich Research Park, Norwich, NR4 7UQ, UK; Departments of Diabetes and Endocrinology and Clinical Biochemistry, Norfolk and Norwich University Hospital, Norwich, NR4 7UY, UK
| | - Jonathan C Y Tang
- Department of Medicine, Norwich Medical School, University of East Anglia, Norwich Research Park, Norwich, NR4 7UQ, UK
| | - Wolfgang Högler
- Institute of Metabolism and Systems Research, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK; Department of Paediatrics and Adolescent Medicine, Johannes Kepler University Linz, 4020, Linz, Austria
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15
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Murray AL, Kaiser D, Valdebenito S, Hughes C, Baban A, Fernando AD, Madrid B, Ward CL, Osafo J, Dunne M, Sikander S, Walker S, Van Thang V, Tomlinson M, Eisner M. The Intergenerational Effects of Intimate Partner Violence in Pregnancy: Mediating Pathways and Implications for Prevention. TRAUMA, VIOLENCE & ABUSE 2020; 21:964-976. [PMID: 30514180 DOI: 10.1177/1524838018813563] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Prenatal intimate partner violence (P-IPV) can have significant adverse impacts on both mother and fetus. Existing P-IPV interventions focus on the safety of the mother and on reducing revictimization; yet expanding these to address the adverse impact on the fetus has considerable potential for preventing long-term negative developmental outcomes. In this review, we draw together evidence on major pathways linking exposure to P-IPV and child outcomes, arguing that these pathways represent potential targets to improve P-IPV intervention efforts. Using a narrative review of 112 articles, we discuss candidate pathways linking P-IPV to child outcomes, as well as their implications for intervention. Articles were identified via key word searches of social science and medical databases and by inspection of reference lists of the most relevant articles, including recent reviews and meta-analyses. Articles were included if they addressed issues relevant to understanding the effects of P-IPV on child outcomes via six core pathways: maternal stress and mental illness, maternal-fetal attachment, maternal substance use, maternal nutritional intake, maternal antenatal health-care utilization, and infection. We also included articles relevant for linking these pathways to P-IPV interventions. We conclude that developing comprehensive P-IPV interventions that target immediate risk to the mother as well as long-term child outcomes via the candidate mediating pathways identified have significant potential to help reduce the global burden of P-IPV.
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Affiliation(s)
- Aja Louise Murray
- Institute of Criminology, University of Cambridge, Cambridge, United Kingdom
| | - Daniela Kaiser
- Institute of Criminology, University of Cambridge, Cambridge, United Kingdom
| | - Sara Valdebenito
- Institute of Criminology, University of Cambridge, Cambridge, United Kingdom
| | - Claire Hughes
- Department of Psychology, University of Cambridge, Cambridge, United Kingdom
| | - Adriana Baban
- Department of Psychology, Babes-Bolyai University, Cluj-Napoca, Romania
| | - Asvini D Fernando
- Department of Paediatrics, Faculty of Medicine, University of Kelaniya, Colombo, Sri Lanka
| | - Bernadette Madrid
- Child Protection Unit, University of the Philippines, Quezon City, Philippines
| | - Catherine L Ward
- Department of Psychology and Safety and Violence Initiative, University of Cape Town, Cape Town, South Africa
| | - Joseph Osafo
- Department of Psychology, University of Ghana, Accra, Ghana
| | - Michael Dunne
- School of Public Health and Social Work, Queensland University of Technology, Brisbane, Australia
| | | | - Susan Walker
- Caribbean Institute for Health Research, The University of the West Indies, Kingston, Jamaica
| | - Vo Van Thang
- Faculty of Public Health, Hue University of Medicine and Pharmacy, Hue, Vietnam
| | - Mark Tomlinson
- Department of Psychology, Stellenbosch University, Stellenbosch, South Africa
| | - Manuel Eisner
- Institute of Criminology, University of Cambridge, Cambridge, United Kingdom
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16
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Lote-Oke R, Pawar J, Kulkarni S, Sanas P, Kajale N, Gondhalekar K, Khadilkar V, Kamat S, Khadilkar A. A LC-MS method for 25-hydroxy-vitamin D3 measurements from dried blood spots for an epidemiological survey in India. Sci Rep 2020; 10:19873. [PMID: 33199793 PMCID: PMC7670412 DOI: 10.1038/s41598-020-76955-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 10/28/2020] [Indexed: 11/21/2022] Open
Abstract
Vitamin D, a secosteroid, plays an important role in several physiological processes, and its deficiency can lead to numerous pathophysiological conditions in humans. The primary objective of this study was to develop and validate the robustness of a mass spectrometry-based method capable of quantifying 25(OH)D3 for an upcoming epidemiological survey in India and to pilot test it on healthy volunteers. We first describe the development and validation of various experimental parameters that ascertain the robustness and reliability of 25-hydroxy-vitamin D3 (25(OH)D3) extractions and quantitative measurements from Dried Blood Spot (DBS) samples, where we used eight disks of 3 mm each, punched from the circular spot covering the entire circumference of the spot. Next, we conducted a pilot study, comparing 25(OH)D3 levels from serum and DBS samples from 45 participants using a protocol developed for specifically this purpose. We found that the mean 25(OH)D3 concentrations in DBS samples were comparable to the serum levels (P > 0.05). In summary, our extraction and LC–MS protocol for quantitative 25(OH)D3 measurements are robust and reproducible, and will serve as an invaluable tool for upcoming epidemiological surveys in India and perhaps around the world.
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Affiliation(s)
- Rashmi Lote-Oke
- Hirabai Cowasji Jehangir Medical Research Institute, Pune, India
| | - Jwala Pawar
- Hirabai Cowasji Jehangir Medical Research Institute, Pune, India
| | - Shriram Kulkarni
- Hirabai Cowasji Jehangir Medical Research Institute, Pune, India
| | - Prasanna Sanas
- Hirabai Cowasji Jehangir Medical Research Institute, Pune, India
| | - Neha Kajale
- Hirabai Cowasji Jehangir Medical Research Institute, Pune, India
| | | | - Vaman Khadilkar
- Hirabai Cowasji Jehangir Medical Research Institute, Pune, India
| | - Siddhesh Kamat
- Department of Biology, Indian Institute of Science Education and Research, Pune, India
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17
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Verstraete J, Boffel L, Stove C. Dried blood microsample-assisted determination of vitamins: Recent developments and challenges. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2020.116057] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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18
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Lin Y, Chen JH, He R, Tang B, Jiang L, Zhang X. A fully validated high-throughput liquid chromatography tandem mass spectrometry method for automatic extraction and quantitative determination of endogenous nutritional biomarkers in dried blood spot samples. J Chromatogr A 2020; 1622:461092. [DOI: 10.1016/j.chroma.2020.461092] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 03/19/2020] [Accepted: 03/29/2020] [Indexed: 01/20/2023]
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19
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Characteristics of participants who benefit most from personalised nutrition: findings from the pan-European Food4Me randomised controlled trial. Br J Nutr 2020; 123:1396-1405. [PMID: 32234083 DOI: 10.1017/s0007114520000653] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Little is known about who would benefit from Internet-based personalised nutrition (PN) interventions. This study aimed to evaluate the characteristics of participants who achieved greatest improvements (i.e. benefit) in diet, adiposity and biomarkers following an Internet-based PN intervention. Adults (n 1607) from seven European countries were recruited into a 6-month, randomised controlled trial (Food4Me) and randomised to receive conventional dietary advice (control) or PN advice. Information on dietary intake, adiposity, physical activity (PA), blood biomarkers and participant characteristics was collected at baseline and month 6. Benefit from the intervention was defined as ≥5 % change in the primary outcome (Healthy Eating Index) and secondary outcomes (waist circumference and BMI, PA, sedentary time and plasma concentrations of cholesterol, carotenoids and omega-3 index) at month 6. For our primary outcome, benefit from the intervention was greater in older participants, women and participants with lower HEI scores at baseline. Benefit was greater for individuals reporting greater self-efficacy for 'sticking to healthful foods' and who 'felt weird if [they] didn't eat healthily'. Participants benefited more if they reported wanting to improve their health and well-being. The characteristics of individuals benefiting did not differ by other demographic, health-related, anthropometric or genotypic characteristics. Findings were similar for secondary outcomes. These findings have implications for the design of more effective future PN intervention studies and for tailored nutritional advice in public health and clinical settings.
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20
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Dried blood spot self-sampling at home is a feasible technique for hepatitis C RNA detection. PLoS One 2020; 15:e0231385. [PMID: 32287293 PMCID: PMC7156069 DOI: 10.1371/journal.pone.0231385] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Accepted: 03/23/2020] [Indexed: 01/25/2023] Open
Abstract
To facilitate HCV diagnosis, we developed an HCV-RNA testing service, which involved home-sampled dried blood spots (DBS). The main objective of this study was to evaluate the feasibility of self-sampling at home. Furthermore, to optimise the processing of DBS samples for RNA detection, we evaluated two elution buffers: phosphate-buffered saline (PBS) and L6-buffer. 27 HCV-RNA and 12 HIV-1 RNA positive patients were included. Laboratory spotted DBS (LabDBS) were made by a technician from blood samples drawn at inclusion. Patients received a DBS home-sampling kit and were requested to return their self-sampled DBS (ssDBS) by mail. We compared the RNA load of PBS and L6-eluted labDBS, and of L6-eluted ssDBS, L6-eluted labDBS and plasma. LabDBS load measurements were repeated after 7–13 and 14–21 days to evaluate RNA stability. All 39 plasma samples provided quantifiable RNA loads. In 1/39 labDBS sample, RNA could not be detected (plasma HCV load: 2.98 log10 IU/ml). L6-eluted samples gave a 0.7 log10 and 0.6 log10 higher viral load for HCV and HIV-1 respectively, compared to PBS-eluted samples. Strong correlations were found between labDBS and ssDBS HCV RNA (r = 0.833; mean difference 0.3 log10 IU/mL) and HIV-1 RNA results (r = 0.857; mean difference 0.1 log10 copies/mL). Correlations between labDBS and plasma values were high for HCV (r = 0.958) and HIV-1 (r = 0.844). RNA loads in DBS remained stable over 21 days. Our study demonstrates that self-sampling dried blood spots at home is a feasible strategy for the detection of HCV and HIV-1 RNA. This could facilitate one-step diagnostics and treatment monitoring in communities with high HCV prevalence.
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21
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EVALUATION OF 25-HYDROXYVITAMIN D IN HOFFMANN'S TWO-TOED SLOTHS ( CHOLOEPUS HOFFMANNI) USING DRIED BLOOD SPOTS ANALYZED BY LIQUID CHROMATOGRAPHY-TANDEM MASS SPECTROMETRY. J Zoo Wildl Med 2020; 50:751-757. [PMID: 31926504 DOI: 10.1638/2019-0045] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/27/2019] [Indexed: 11/21/2022] Open
Abstract
Although biochemical analytes have typically been measured using serum or whole blood samples, an increasing number of assays are validated for measurement of analytes from dried blood spots (DBS) on filter paper. DBS techniques are minimally invasive, require only a small sample volume, and simplify processing, storage, and shipment of samples. These qualities make DBS-based assays ideal for sampling of wildlife species in both captive and field settings. In this study, a liquid chromatography-tandem mass spectrometry assay was evaluated for measurement of 25-hydroxyvitamin D in sloths. Paired serum and DBS samples were collected from nine healthy captive Hoffmann's two-toed sloths (Choloepus hoffmanni). Statistical analysis using Passing-Bablok regression analysis, Bland-Altman plots, and the Wilcoxon signed-rank tests found good agreement between 25-hydroxyvitamin D3 measurements in serum and DBS samples. Constant and proportional bias were absent. Results from this study support the use of DBS samples for the evaluation of vitamin D status in Hoffmann's two-toed sloths and provide a foundation for further studies to validate this technique.
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22
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Le (乐娟) J, Yuan (袁腾飞) TF, Geng (耿嘉庆) JQ, Wang (王少亭) ST, Li (李艳) Y, Zhang (张炳宏) BH. Acylation derivatization based LC-MS analysis of 25-hydroxyvitamin D from finger-prick blood. J Lipid Res 2019; 60:1058-1064. [PMID: 30902903 PMCID: PMC6495167 DOI: 10.1194/jlr.d092197] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 03/20/2019] [Indexed: 12/13/2022] Open
Abstract
Vitamin D metabolite analysis possessed significant clinical value for the pediatric department. However, invasive venipuncture sampling and high blood consumption inflicted much suffering on patients. For alleviation, we carried out a LC-MS method for 25-hydroxyvitamin D quantification in only 3 μl of plasma from the considerably less invasive finger-prick blood samples. To improve sensitivity, acylation on C3-hydroxyl (by isonicotinoyl chloride) rather than Diels-Alder adduction on s-cis-diene structure was for the very first time introduced into vitamin D metabolite derivatization. Compared with the existing derivatization approaches, this novel strategy not only prevented isomer interference, but also exhibited higher reacting throughput. For certification, the methodology was systematically validated and showed satisfying consistency with SRM927a. During clinical application, we found a convincing correlation between 25-hydroxyvitamin D and indirect/total bilirubin in jaundiced newborns. Such an observation indicated that vitamin D supplementation may help to achieve optimal outcomes in neonatal jaundice.
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Affiliation(s)
- Juan Le (乐娟)
- Department of Clinical LaboratoryRenmin Hospital of Wuhan University, 430060 Wuhan, China
| | - Teng-Fei Yuan (袁腾飞)
- Department of Clinical LaboratoryRenmin Hospital of Wuhan University, 430060 Wuhan, China
| | - Jia-Qing Geng (耿嘉庆)
- Pediatric DepartmentRenmin Hospital of Wuhan University, 430060 Wuhan, China
| | - Shao-Ting Wang (王少亭)
- Department of Clinical LaboratoryRenmin Hospital of Wuhan University, 430060 Wuhan, China
| | - Yan Li (李艳)
- Department of Clinical LaboratoryRenmin Hospital of Wuhan University, 430060 Wuhan, China
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Lenk G, Ullah S, Stemme G, Beck O, Roxhed N. Evaluation of a Volumetric Dried Blood Spot Card Using a Gravimetric Method and a Bioanalytical Method with Capillary Blood from 44 Volunteers. Anal Chem 2019; 91:5558-5565. [DOI: 10.1021/acs.analchem.8b02905] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Gabriel Lenk
- KTH Royal Institute of Technology Stockholm, Department of Micro and Nanosystems, 10044 Stockholm, Sweden
| | - Shahid Ullah
- Karolinska University Hospital, Clinical Pharmacology, 14186 Stockholm, Sweden
| | - Göran Stemme
- KTH Royal Institute of Technology Stockholm, Department of Micro and Nanosystems, 10044 Stockholm, Sweden
| | - Olof Beck
- Karolinska University Hospital, Clinical Pharmacology, 14186 Stockholm, Sweden
| | - Niclas Roxhed
- KTH Royal Institute of Technology Stockholm, Department of Micro and Nanosystems, 10044 Stockholm, Sweden
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Rola R, Kowalski K, Bieńkowski T, Kołodyńska-Goworek A, Studzińska S. Development of a method for multiple vitamin D metabolite measurements by liquid chromatography coupled with tandem mass spectrometry in dried blood spots. Analyst 2019; 144:299-309. [PMID: 30403208 DOI: 10.1039/c8an01422a] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
There are two forms of vitamin D which are essential to the human body, i.e. vitamin D2 (ergocalciferol) and vitamin D3 (cholecalciferol). The inactive metabolites of vitamin D are commonly used for quantitative analysis because of their longer half-life, stability, and relatively high blood concentrations. This paper presents the development of a high-throughput and sensitive method for determining four vitamin D metabolites in dried blood spots using liquid chromatography coupled with tandem mass spectrometry. This method allows for the determination of 25(OH)D2 and 25(OH)D3 concentrations, as well as the epimeric form 3-epi-25(OH)D3 and 24,25(OH)2D3. The analyzed material is capillary blood taken from the fingertip, deposited on filter paper. Four different chromatographic columns were tested to separate all compounds, in particular, the epimeric form. The column of choice was F5 (Phenomenex, Torrance, CA, USA). In order to prove the consistency between the results for DBS, used as an alternative biological matrix, and serum, comparative studies of these two materials were carried out in nearly 100 individuals. The results indicated their positive correlation. The evaluation of short-term stability of metabolites in DBS within the month showed no change in metabolite concentration. During the validation, the impact of the matrix on the ionization of the tested compounds was evaluated. Capillary blood and venous blood collected for different anticoagulants were also compared. The smallest differences in the results were obtained for citrate. In order to achieve a limit of quantitation of 0.2 ng ml-1, sample preparation involved derivatization using a Cookson-type reagent, 4-(4'-dimethylaminophenyl)-1,2,4-triazoline-3,5-dione (DAPTAD).
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Affiliation(s)
- R Rola
- Chair of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University in Toruń, 7 Gagarin St., PL - 87-100 Toruń, Poland. and Masdiag - Diagnostic Mass Spectrometry Laboratory, 33 Stefana Żeromskiego St., PL - 01-882 Warsaw, Poland
| | - K Kowalski
- Masdiag - Diagnostic Mass Spectrometry Laboratory, 33 Stefana Żeromskiego St., PL - 01-882 Warsaw, Poland
| | - T Bieńkowski
- Masdiag - Diagnostic Mass Spectrometry Laboratory, 33 Stefana Żeromskiego St., PL - 01-882 Warsaw, Poland
| | - A Kołodyńska-Goworek
- Masdiag - Diagnostic Mass Spectrometry Laboratory, 33 Stefana Żeromskiego St., PL - 01-882 Warsaw, Poland
| | - S Studzińska
- Chair of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University in Toruń, 7 Gagarin St., PL - 87-100 Toruń, Poland.
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Civil R, Lamb A, Loosmore D, Ross L, Livingstone K, Strachan F, Dick JR, Stevenson EJ, Brown MA, Witard OC. Assessment of Dietary Intake, Energy Status, and Factors Associated With RED-S in Vocational Female Ballet Students. Front Nutr 2019; 5:136. [PMID: 30687712 PMCID: PMC6333673 DOI: 10.3389/fnut.2018.00136] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Accepted: 12/12/2018] [Indexed: 11/13/2022] Open
Abstract
Elite ballet dancers are at risk of health issues associated with Relative Energy Deficiency in Sport (RED-S). This study determined the nutritional status, estimated energy status, and assessed factors related to RED-S in vocational female ballet students. Using a cross-sectional study design, we measured dietary intake (food diaries and 24 h dietary-recall) and energy expenditure (accelerometry) in vocational female ballet students (n = 20; age: 18.1 ± 1.1 years; body mass index: 19.0 ± 1.6 kg·m2; body fat: 22.8 ± 3.4%) over 7 days, including 5 weekdays (with dance training) and 2 weekend days (without scheduled dance training). Furthermore, we assessed eating behaviors, menstrual function, risk of RED-S (questionnaires), and body composition (dual x-ray absorptiometry). Energy and macronutrient intakes of vocational ballet students were similar during weekdays and weekend days (P > 0.050), whereas total energy expenditure was greater on weekdays than weekend days (P < 0.010; 95% CI: 212, 379). Energy balance was lower on weekdays (-425 ± 465 kcal·day-1) than weekend days (-6 ± 506 kcal·day-1, P = 0.015; 95% CI: -748, -92). Exercise energy expenditure was greater on weekdays (393 ± 103 kcal·day-1) than weekend days (213 ± 129 kcal·day-1; P < 0.010; 95% CI: 114, 246), but energy availability was similar between time periods (weekdays 38 ± 13 kcal·kg FFM·day-1; weekend days 44 ± 13 kcal·kg FFM·day-1; P = 0.110). Overall, 35% of participants had an energy intake <1,800 kcal·day-1, 44% had reduced energy availability (30-45 kcal·kg FFM·day-1), and 22% had low energy availability (<30 kcal·kg FFM·day-1). Menstrual dysfunctions were reported in 40% of participants; 15 and 25% reported oligomenorrhea and secondary amenorrhea, respectively; while 65% were classified at risk of RED-S (based on the Low Energy Availability in Females Questionnaire). All participants had adequate bone health (bone mineral density Z-score: 1.1 ± 0.9 SD), but 20% had <85% expected body weight. The observation of an energy deficit in vocational female ballet students was primarily attributed to an inability to plan energy intake and thereby meet higher energy requirements during ballet training weekdays. Screening for factors associated with RED-S and tailoring education programs to inform energy and nutrition requirements for health and training are recommended in elite young ballet students.
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Affiliation(s)
- Rita Civil
- Faculty of Health Science and Sport, University of Stirling, Stirling, United Kingdom
| | - Antonia Lamb
- Faculty of Health Science and Sport, University of Stirling, Stirling, United Kingdom
| | - Diana Loosmore
- Modern Ballet, Royal Conservatoire of Scotland, Glasgow, United Kingdom
| | - Louisa Ross
- Modern Ballet, Royal Conservatoire of Scotland, Glasgow, United Kingdom
| | - Kerry Livingstone
- Modern Ballet, Royal Conservatoire of Scotland, Glasgow, United Kingdom
| | - Fiona Strachan
- Institute of Aquaculture, University of Stirling, Stirling, United Kingdom
| | - James R Dick
- Institute of Aquaculture, University of Stirling, Stirling, United Kingdom
| | - Emma J Stevenson
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Meghan A Brown
- School of Sport and Exercise, University of Gloucestershire, Cheltenham, United Kingdom
| | - Oliver C Witard
- Faculty of Health Science and Sport, University of Stirling, Stirling, United Kingdom
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Jensen BP, Saraf R, Ma J, Berry S, Grant CC, Camargo CA, Sies CW. Quantitation of 25-hydroxyvitamin D in dried blood spots by 2D LC-MS/MS without derivatization and correlation with serum in adult and pediatric studies. Clin Chim Acta 2018; 481:61-68. [DOI: 10.1016/j.cca.2018.02.024] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Revised: 02/18/2018] [Accepted: 02/19/2018] [Indexed: 11/15/2022]
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Manios Y, Moschonis G, Lambrinou CP, Mavrogianni C, Tsirigoti L, Hoeller U, Roos FF, Bendik I, Eggersdorfer M, Celis-Morales C, Livingstone KM, Marsaux CFM, Macready AL, Fallaize R, O'Donovan CB, Woolhead C, Forster H, Walsh MC, Navas-Carretero S, San-Cristobal R, Kolossa S, Hallmann J, Jarosz M, Surwiłło A, Traczyk I, Drevon CA, van Ommen B, Grimaldi K, Matthews JNS, Daniel H, Martinez JA, Lovegrove JA, Gibney ER, Brennan L, Saris WHM, Gibney M, Mathers JC. Associations of vitamin D status with dietary intakes and physical activity levels among adults from seven European countries: the Food4Me study. Eur J Nutr 2018; 57:1357-1368. [PMID: 28289868 DOI: 10.1007/s00394-017-1415-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Accepted: 02/19/2017] [Indexed: 10/20/2022]
Abstract
PURPOSE To report the vitamin D status in adults from seven European countries and to identify behavioural correlates. METHODS In total, 1075 eligible adult men and women from Ireland, Netherlands, Spain, Greece, UK, Poland and Germany, were included in the study. RESULTS Vitamin D deficiency and insufficiency, defined as 25-hydroxy vitamin D3 (25-OHD3) concentration of <30 and 30-49.9 nmol/L, respectively, were observed in 3.3 and 30.6% of the participants. The highest prevalence of vitamin D deficiency was found in the UK and the lowest in the Netherlands (8.2 vs. 1.1%, P < 0.05). In addition, the prevalence of vitamin D insufficiency was higher in females compared with males (36.6 vs. 22.6%, P < 0.001), in winter compared with summer months (39.3 vs. 25.0%, P < 0.05) and in younger compared with older participants (36.0 vs. 24.4%, P < 0.05). Positive dose-response associations were also observed between 25-OHD3 concentrations and dietary vitamin D intake from foods and supplements, as well as with physical activity (PA) levels. Vitamin D intakes of ≥5 μg/day from foods and ≥5 μg/day from supplements, as well as engagement in ≥30 min/day of moderate- and vigorous-intensity PA were associated with higher odds (P < 0.05) for maintaining sufficient (≥50 nmol/L) 25-OHD3 concentrations. CONCLUSIONS The prevalence of vitamin D deficiency varied considerably among European adults. Dietary intakes of ≥10 μg/day of vitamin D from foods and/or supplements and at least 30 min/day of moderate- and vigorous-intensity PA were the minimum thresholds associated with vitamin D sufficiency.
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Affiliation(s)
- Yannis Manios
- Department of Nutrition and Dietetics, School of Heath Science and Education, Harokopio University, Athens, Greece.
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University of Athens, 70, El Venizelou Ave, Kallithea, 176 71, Athens, Greece.
| | - George Moschonis
- Department of Nutrition and Dietetics, School of Heath Science and Education, Harokopio University, Athens, Greece
| | - Christina P Lambrinou
- Department of Nutrition and Dietetics, School of Heath Science and Education, Harokopio University, Athens, Greece
| | - Christina Mavrogianni
- Department of Nutrition and Dietetics, School of Heath Science and Education, Harokopio University, Athens, Greece
| | - Lydia Tsirigoti
- Department of Nutrition and Dietetics, School of Heath Science and Education, Harokopio University, Athens, Greece
| | - Ulrich Hoeller
- Analytical Research Centre and Human Nutrition & Health, DSM Nutritional Products, 4002, Basel, Switzerland
| | - Franz F Roos
- Analytical Research Centre and Human Nutrition & Health, DSM Nutritional Products, 4002, Basel, Switzerland
| | - Igor Bendik
- Analytical Research Centre and Human Nutrition & Health, DSM Nutritional Products, 4002, Basel, Switzerland
| | - Manfred Eggersdorfer
- Analytical Research Centre and Human Nutrition & Health, DSM Nutritional Products, 4002, Basel, Switzerland
| | - Carlos Celis-Morales
- Human Nutrition Research Centre, Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Katherine M Livingstone
- Human Nutrition Research Centre, Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Cyril F M Marsaux
- Department of Human Biology, NUTRIM, School for Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Anna L Macready
- Hugh Sinclair Unit of Human Nutrition and Institute for Cardiovascular and Metabolic Research, University of Reading, Reading, UK
| | - Rosalind Fallaize
- Hugh Sinclair Unit of Human Nutrition and Institute for Cardiovascular and Metabolic Research, University of Reading, Reading, UK
| | - Clare B O'Donovan
- UCD Institute of Food and Health, University College Dublin, Belfield, Dublin 4, Republic of Ireland
| | - Clara Woolhead
- UCD Institute of Food and Health, University College Dublin, Belfield, Dublin 4, Republic of Ireland
| | - Hannah Forster
- UCD Institute of Food and Health, University College Dublin, Belfield, Dublin 4, Republic of Ireland
| | - Marianne C Walsh
- UCD Institute of Food and Health, University College Dublin, Belfield, Dublin 4, Republic of Ireland
| | - Santiago Navas-Carretero
- Department of Nutrition and Physiology, University of Navarra; CIBER Fisiopatología Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, Pamplona, Spain
| | - Rodrigo San-Cristobal
- Department of Nutrition and Physiology, University of Navarra; CIBER Fisiopatología Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, Pamplona, Spain
| | - Silvia Kolossa
- ZIEL Research Center of Nutrition and Food Sciences, Biochemistry Unit, Technische Universität München, Munich, Germany
| | - Jacqueline Hallmann
- ZIEL Research Center of Nutrition and Food Sciences, Biochemistry Unit, Technische Universität München, Munich, Germany
| | | | | | - Iwona Traczyk
- National Food & Nutrition Institute (IZZ), Warsaw, Poland
| | - Christian A Drevon
- Department of Nutrition, Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Ben van Ommen
- Microbiology and Systems Biology Group, TNO, Zeist, the Netherlands
| | | | - John N S Matthews
- School of Mathematics and Statistics, Newcastle University, Newcastle upon Tyne, UK
| | - Hannelore Daniel
- ZIEL Research Center of Nutrition and Food Sciences, Biochemistry Unit, Technische Universität München, Munich, Germany
| | - J Alfredo Martinez
- Department of Nutrition and Physiology, University of Navarra; CIBER Fisiopatología Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, Pamplona, Spain
| | - Julie A Lovegrove
- Hugh Sinclair Unit of Human Nutrition and Institute for Cardiovascular and Metabolic Research, University of Reading, Reading, UK
| | - Eileen R Gibney
- UCD Institute of Food and Health, University College Dublin, Belfield, Dublin 4, Republic of Ireland
| | - Lorraine Brennan
- UCD Institute of Food and Health, University College Dublin, Belfield, Dublin 4, Republic of Ireland
| | - Wim H M Saris
- Department of Human Biology, NUTRIM, School for Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Mike Gibney
- UCD Institute of Food and Health, University College Dublin, Belfield, Dublin 4, Republic of Ireland
| | - John C Mathers
- Human Nutrition Research Centre, Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
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Micronutrient status assessment in humans: Current methods of analysis and future trends. Trends Analyt Chem 2018. [DOI: 10.1016/j.trac.2018.02.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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San-Cristobal R, Navas-Carretero S, Celis-Morales C, Livingstone KM, Stewart-Knox B, Rankin A, Macready AL, Fallaize R, O’Donovan CB, Forster H, Woolhead C, Walsh MC, Lambrinou CP, Moschonis G, Manios Y, Jarosz M, Daniel H, Gibney ER, Brennan L, Gundersen TE, Drevon CA, Gibney M, Marsaux CFM, Saris WHM, Lovegrove JA, Frewer LJ, Mathers JC, Martinez JA. Capturing health and eating status through a nutritional perception screening questionnaire (NPSQ9) in a randomised internet-based personalised nutrition intervention: the Food4Me study. Int J Behav Nutr Phys Act 2017; 14:168. [PMID: 29228998 PMCID: PMC5725967 DOI: 10.1186/s12966-017-0624-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 10/23/2017] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND National guidelines emphasize healthy eating to promote wellbeing and prevention of non-communicable diseases. The perceived healthiness of food is determined by many factors affecting food intake. A positive perception of healthy eating has been shown to be associated with greater diet quality. Internet-based methodologies allow contact with large populations. Our present study aims to design and evaluate a short nutritional perception questionnaire, to be used as a screening tool for assessing nutritional status, and to predict an optimal level of personalisation in nutritional advice delivered via the Internet. METHODS Data from all participants who were screened and then enrolled into the Food4Me proof-of-principle study (n = 2369) were used to determine the optimal items for inclusion in a novel screening tool, the Nutritional Perception Screening Questionnaire-9 (NPSQ9). Exploratory and confirmatory factor analyses were performed on anthropometric and biochemical data and on dietary indices acquired from participants who had completed the Food4Me dietary intervention (n = 1153). Baseline and intervention data were analysed using linear regression and linear mixed regression, respectively. RESULTS A final model with 9 NPSQ items was validated against the dietary intervention data. NPSQ9 scores were inversely associated with BMI (β = -0.181, p < 0.001) and waist circumference (Β = -0.155, p < 0.001), and positively associated with total carotenoids (β = 0.198, p < 0.001), omega-3 fatty acid index (β = 0.155, p < 0.001), Healthy Eating Index (HEI) (β = 0.299, p < 0.001) and Mediterranean Diet Score (MDS) (β = 0. 279, p < 0.001). Findings from the longitudinal intervention study showed a greater reduction in BMI and improved dietary indices among participants with lower NPSQ9 scores. CONCLUSIONS Healthy eating perceptions and dietary habits captured by the NPSQ9 score, based on nine questionnaire items, were associated with reduced body weight and improved diet quality. Likewise, participants with a lower score achieved greater health improvements than those with higher scores, in response to personalised advice, suggesting that NPSQ9 may be used for early evaluation of nutritional status and to tailor nutritional advice. TRIAL REGISTRATION NCT01530139 .
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Affiliation(s)
- Rodrigo San-Cristobal
- Centre for Nutrition Research, Department of Nutrition, Food Science and Physiology, University of Navarra, C/Irunlarrea, 1, 31008 Pamplona, Spain
| | - Santiago Navas-Carretero
- Centre for Nutrition Research, Department of Nutrition, Food Science and Physiology, University of Navarra, C/Irunlarrea, 1, 31008 Pamplona, Spain
- CIBER Fisiopatología Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, 28023 Madrid, Spain
| | - Carlos Celis-Morales
- Human Nutrition Research Centre, Institute of Cellular Medicine, Newcastle University, Newcastle Upon Tyne, NE1 7RU UK
| | - Katherine M. Livingstone
- Human Nutrition Research Centre, Institute of Cellular Medicine, Newcastle University, Newcastle Upon Tyne, NE1 7RU UK
| | | | - Audrey Rankin
- Northern Ireland Centre for Food and Health, University of Ulster, Coleraine, BT52 1SA UK
| | - Anna L. Macready
- Hugh Sinclair Unit of Human Nutrition and Institute for Cardiovascular and Metabolic Research, University of Reading, Reading, RG6 6AA UK
| | - Rosalind Fallaize
- Hugh Sinclair Unit of Human Nutrition and Institute for Cardiovascular and Metabolic Research, University of Reading, Reading, RG6 6AA UK
| | - Clare B. O’Donovan
- UCD Institute of Food and Health, UCD School of Agriculture and Food Science, University College Dublin, Belfield, Dublin, 4 Republic of Ireland
| | - Hannah Forster
- UCD Institute of Food and Health, UCD School of Agriculture and Food Science, University College Dublin, Belfield, Dublin, 4 Republic of Ireland
| | - Clara Woolhead
- UCD Institute of Food and Health, UCD School of Agriculture and Food Science, University College Dublin, Belfield, Dublin, 4 Republic of Ireland
| | - Marianne C. Walsh
- UCD Institute of Food and Health, UCD School of Agriculture and Food Science, University College Dublin, Belfield, Dublin, 4 Republic of Ireland
| | - Christina P. Lambrinou
- Department of Nutrition and Dietetics, Harokopio University of Athens, 17671 Athens, Greece
| | - George Moschonis
- Department of Nutrition and Dietetics, Harokopio University of Athens, 17671 Athens, Greece
| | - Yannis Manios
- Department of Nutrition and Dietetics, Harokopio University of Athens, 17671 Athens, Greece
| | - Miroslaw Jarosz
- Institute of Food and Nutrition (IZZ), 02-903 Warsaw, Poland
| | - Hannelore Daniel
- ZIEL Research Center of Nutrition and Food Sciences, Biochemistry Unit, Technische Universität München, 85354 Munich, Germany
| | - Eileen R. Gibney
- UCD Institute of Food and Health, UCD School of Agriculture and Food Science, University College Dublin, Belfield, Dublin, 4 Republic of Ireland
| | - Lorraine Brennan
- UCD Institute of Food and Health, UCD School of Agriculture and Food Science, University College Dublin, Belfield, Dublin, 4 Republic of Ireland
| | | | - Christian A. Drevon
- Department of Nutrition, Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, 0317 Oslo, Norway
| | - Mike Gibney
- UCD Institute of Food and Health, UCD School of Agriculture and Food Science, University College Dublin, Belfield, Dublin, 4 Republic of Ireland
| | - Cyril F. M. Marsaux
- Department of Human Biology, NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre, Maastricht, 6200 MD The Netherlands
| | - Wim H. M. Saris
- Department of Human Biology, NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre, Maastricht, 6200 MD The Netherlands
| | - Julie A. Lovegrove
- Hugh Sinclair Unit of Human Nutrition and Institute for Cardiovascular and Metabolic Research, University of Reading, Reading, RG6 6AA UK
| | - Lynn J. Frewer
- Food and Society Group, Newcastle University, Newcastle Upon Tyne, NE1 7RU UK
| | - John C. Mathers
- Human Nutrition Research Centre, Institute of Cellular Medicine, Newcastle University, Newcastle Upon Tyne, NE1 7RU UK
| | - J. Alfredo Martinez
- Centre for Nutrition Research, Department of Nutrition, Food Science and Physiology, University of Navarra, C/Irunlarrea, 1, 31008 Pamplona, Spain
- CIBER Fisiopatología Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, 28023 Madrid, Spain
- Instituto de Investigaciones Sanitarias de Navarra (IDisNa), 31008 Pamplona, Spain
- Instituto Madrileño de Estudios Avanzados (IMDEA) Alimentacion, Madrid, Spain
| | - on behalf of the Food4Me Study
- Centre for Nutrition Research, Department of Nutrition, Food Science and Physiology, University of Navarra, C/Irunlarrea, 1, 31008 Pamplona, Spain
- CIBER Fisiopatología Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, 28023 Madrid, Spain
- Human Nutrition Research Centre, Institute of Cellular Medicine, Newcastle University, Newcastle Upon Tyne, NE1 7RU UK
- School of Psychology, University of Bradford, West Yorkshire, BD71DP UK
- Northern Ireland Centre for Food and Health, University of Ulster, Coleraine, BT52 1SA UK
- Hugh Sinclair Unit of Human Nutrition and Institute for Cardiovascular and Metabolic Research, University of Reading, Reading, RG6 6AA UK
- UCD Institute of Food and Health, UCD School of Agriculture and Food Science, University College Dublin, Belfield, Dublin, 4 Republic of Ireland
- Department of Nutrition and Dietetics, Harokopio University of Athens, 17671 Athens, Greece
- Institute of Food and Nutrition (IZZ), 02-903 Warsaw, Poland
- ZIEL Research Center of Nutrition and Food Sciences, Biochemistry Unit, Technische Universität München, 85354 Munich, Germany
- Vitas Ltd., Oslo Science Park, Gaustadalléen 21, 0349 Oslo, Norway
- Department of Nutrition, Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, 0317 Oslo, Norway
- Department of Human Biology, NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre, Maastricht, 6200 MD The Netherlands
- Food and Society Group, Newcastle University, Newcastle Upon Tyne, NE1 7RU UK
- Instituto de Investigaciones Sanitarias de Navarra (IDisNa), 31008 Pamplona, Spain
- Instituto Madrileño de Estudios Avanzados (IMDEA) Alimentacion, Madrid, Spain
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Karvaly G, Molnár-Világos G, Kovács K, Mészáros K, Patócs A, Vásárhelyi B. Evaluation of the Analytical and Clinical Concordance of 25-Hydroxyvitamin D Levels in Dried Blood Spots, Dried Serum Spots, and Serum as Potential Biorepository Specimens. Biopreserv Biobank 2017; 15:285-292. [DOI: 10.1089/bio.2016.0082] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Affiliation(s)
- Gellert Karvaly
- Department of Laboratory Medicine, Semmelweis University, Budapest, Hungary
- Bionics Innovation Center, Budapest, Hungary
| | | | - Krisztián Kovács
- Department of Laboratory Medicine, Semmelweis University, Budapest, Hungary
- Bionics Innovation Center, Budapest, Hungary
| | - Katalin Mészáros
- Department of Laboratory Medicine, Semmelweis University, Budapest, Hungary
- HAS-SE “Momentum” Hereditary Endocrine Tumours Research Group, Budapest, Hungary
| | - Attila Patócs
- Department of Laboratory Medicine, Semmelweis University, Budapest, Hungary
- Bionics Innovation Center, Budapest, Hungary
- HAS-SE “Momentum” Hereditary Endocrine Tumours Research Group, Budapest, Hungary
| | - Barna Vásárhelyi
- Department of Laboratory Medicine, Semmelweis University, Budapest, Hungary
- Bionics Innovation Center, Budapest, Hungary
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Phenotypic factors influencing the variation in response of circulating cholesterol level to personalised dietary advice in the Food4Me study. Br J Nutr 2017; 116:2011-2019. [DOI: 10.1017/s0007114516004256] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
AbstractIndividual response to dietary interventions can be highly variable. The phenotypic characteristics of those who will respond positively to personalised dietary advice are largely unknown. The objective of this study was to compare the phenotypic profiles of differential responders to personalised dietary intervention, with a focus on total circulating cholesterol. Subjects from the Food4Me multi-centre study were classified as responders or non-responders to dietary advice on the basis of the change in cholesterol level from baseline to month 6, with lower and upper quartiles defined as responder and non-responder groups, respectively. There were no significant differences between demographic and anthropometric profiles of the groups. Furthermore, with the exception of alcohol, there was no significant difference in reported dietary intake, at baseline. However, there were marked differences in baseline fatty acid profiles. The responder group had significantly higher levels of stearic acid (18 : 0, P=0·034) and lower levels of palmitic acid (16 : 0, P=0·009). Total MUFA (P=0·016) and total PUFA (P=0·008) also differed between the groups. In a step-wise logistic regression model, age, baseline total cholesterol, glucose, five fatty acids and alcohol intakes were selected as factors that successfully discriminated responders from non-responders, with sensitivity of 82 % and specificity of 83 %. The successful delivery of personalised dietary advice may depend on our ability to identify phenotypes that are responsive. The results demonstrate the potential use of metabolic profiles in identifying response to an intervention and could play an important role in the development of precision nutrition.
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Quantification of the 3α and 3β epimers of 25-hydroxyvitamin D 3 in dried blood spots by LC-MS/MS using artificial whole blood calibration and chemical derivatization. Talanta 2016; 165:398-404. [PMID: 28153274 DOI: 10.1016/j.talanta.2016.12.081] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2016] [Revised: 12/24/2016] [Accepted: 12/27/2016] [Indexed: 11/20/2022]
Abstract
While the biological function of the 3α epimer of 25-hydroxyvitamin D3 (25(OH)D3) remains unknown, its presence needs to be accurately captured and separated from the main 3β epimer, to avoid positive bias in vitamin D status analyses. Several recent LC-MS/MS assays for 25(OH)D3 successfully separate the 3α and 3β epimers by chromatography. Unfortunately, none of the existing LC-MS/MS assays, which utilize dried blood spots (DBS) as sampling/storage vessels, is able to quantify the individual epimers. DBS are often used for analysis of infant blood, however, and these samples are particularly likely to contain significant levels of interfering 3α epimer. Furthermore, proper calibration of DBS samples is much more difficult to achieve than for liquid serum or plasma samples. We addressed this important issue by creating an artificial vitamin D-free whole blood for calibration and then quantified 3α- and 3β-25(OH)D3 levels from DBS. After chemical derivatization, the vitamin D epimers were separated on a PFP column and concentrations determined by electrospray ionization LC-MS/MS on a triple quadrupole mass spectrometer. Calibration with artificial whole blood showed improved precision over standard addition (7.6 versus 31.5% RSD for 3β-25(OH)D3). The limits of quantification for 3β-25(OH)D3 and for 3α-25(OH)D3 were 1.0 and 0.1ng/mL, respectively. Excellent intra/interday precisions between 2.1 and 2.2% CV (intra) and 4.4-5.3% CV (inter) were established for 3β-25(OH)D3 and 3α-25(OH)D3. For 3β-25(OH)D3, only small concentration-independent bias and deviation of <3.3ng/mL were seen between serum LC-MS/MS and DBS-LC-MS/MS measurements; analyses of 3α-25(OH)D3 showed deviations of <0.8ng/mL in all experiments.
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Livingstone KM, Celis-Morales C, Hoeller U, Lambrinou CP, Moschonis G, Macready AL, Fallaize R, Baur M, Roos FF, Bendik I, Grimaldi K, Navas-Carretero S, San-Cristobal R, Weber P, Drevon CA, Manios Y, Traczyk I, Gibney ER, Lovegrove JA, Saris WH, Daniel H, Gibney M, Martinez JA, Brennan L, Hill TR, Mathers JC. Weekday sunlight exposure, but not vitamin D intake, influences the association between vitamin D receptor genotype and circulating concentration 25-hydroxyvitamin D in a pan-European population: the Food4Me study. Mol Nutr Food Res 2016; 61. [DOI: 10.1002/mnfr.201600476] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2016] [Revised: 08/21/2016] [Accepted: 09/08/2016] [Indexed: 01/04/2023]
Affiliation(s)
- Katherine M. Livingstone
- Human Nutrition Research Centre; Institute of Cellular Medicine; Newcastle University; Newcastle Upon Tyne UK
| | - Carlos Celis-Morales
- Human Nutrition Research Centre; Institute of Cellular Medicine; Newcastle University; Newcastle Upon Tyne UK
| | - Ulrich Hoeller
- Analytical Research Centre and Human Nutrition and Health Department; DSM Nutritional Products; Basel Switzerland
| | | | - George Moschonis
- Department of Nutrition and Dietetics; Harokopio University; Athens Greece
| | - Anna L. Macready
- Hugh Sinclair Unit of Human Nutrition and Institute for Cardiovascular and Metabolic Research; University of Reading; Reading UK
| | - Rosalind Fallaize
- Hugh Sinclair Unit of Human Nutrition and Institute for Cardiovascular and Metabolic Research; University of Reading; Reading UK
| | - Manuela Baur
- Analytical Research Centre and Human Nutrition and Health Department; DSM Nutritional Products; Basel Switzerland
| | - Franz F Roos
- Analytical Research Centre and Human Nutrition and Health Department; DSM Nutritional Products; Basel Switzerland
| | - Igor Bendik
- Analytical Research Centre and Human Nutrition and Health Department; DSM Nutritional Products; Basel Switzerland
| | | | - Santiago Navas-Carretero
- Center for Nutrition Research; University of Navarra; Pamplona Spain
- CIBER Fisiopatología Obesidad y Nutrición (CIBERobn); Instituto de Salud Carlos III; Madrid Spain
| | - Rodrigo San-Cristobal
- Center for Nutrition Research; University of Navarra; Pamplona Spain
- CIBER Fisiopatología Obesidad y Nutrición (CIBERobn); Instituto de Salud Carlos III; Madrid Spain
| | - Peter Weber
- Analytical Research Centre and Human Nutrition and Health Department; DSM Nutritional Products; Basel Switzerland
| | - Christian A. Drevon
- Department of Nutrition; Institute of Basic Medical Sciences; Faculty of Medicine; University of Oslo; Oslo Norway
| | - Yannis Manios
- Department of Nutrition and Dietetics; Harokopio University; Athens Greece
| | - Iwona Traczyk
- Department of Human Nutrition; Faculty of Health Science; Medical University of Warsaw; Warsaw Poland
| | - Eileen R. Gibney
- UCD Institute of Food and Health; University College Dublin; Belfield Dublin Republic of Ireland
| | - Julie A. Lovegrove
- Hugh Sinclair Unit of Human Nutrition and Institute for Cardiovascular and Metabolic Research; University of Reading; Reading UK
| | - Wim H. Saris
- Department of Human Biology; NUTRIM School of Nutrition and Translational Research in Metabolism; Maastricht University Medical Centre; Maastricht The Netherlands
| | - Hannelore Daniel
- ZIEL Research Center of Nutrition and Food Sciences; Biochemistry Unit; Technical University of Munich; Germany
| | - Mike Gibney
- UCD Institute of Food and Health; University College Dublin; Belfield Dublin Republic of Ireland
| | - J. Alfredo Martinez
- Center for Nutrition Research; University of Navarra; Pamplona Spain
- CIBER Fisiopatología Obesidad y Nutrición (CIBERobn); Instituto de Salud Carlos III; Madrid Spain
| | - Lorraine Brennan
- Human Nutrition Research Centre; Institute of Cellular Medicine; Newcastle University; Newcastle Upon Tyne UK
- UCD Institute of Food and Health; University College Dublin; Belfield Dublin Republic of Ireland
| | - Tom R. Hill
- Human Nutrition Research Centre; School of Agriculture, Food and Rural Development; Newcastle University; Newcastle Upon Tyne UK
| | - John C. Mathers
- Human Nutrition Research Centre; Institute of Cellular Medicine; Newcastle University; Newcastle Upon Tyne UK
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Abstract
The concept that interactions between nutrition and genetics determine phenotype was established by Garrod at the beginning of the 20th century through his ground-breaking work on inborn errors of metabolism. A century later, the science and technologies involved in sequencing of the human genome stimulated development of the scientific discipline which we now recognise as nutritional genomics (nutrigenomics). Much of the early hype around possible applications of this new science was unhelpful and raised expectations, which have not been realised as quickly as some would have hoped. However, major advances have been made in quantifying the contribution of genetic variation to a wide range of phenotypes and it is now clear that for nutrition-related phenotypes, such as obesity and common complex diseases, the genetic contribution made by SNP alone is often modest. There is much scope for innovative research to understand the roles of less well explored types of genomic structural variation, e.g. copy number variants, and of interactions between genotype and dietary factors, in phenotype determination. New tools and models, including stem cell-based approaches and genome editing, have huge potential to transform mechanistic nutrition research. Finally, the application of nutrigenomics research offers substantial potential to improve public health e.g. through the use of metabolomics approaches to identify novel biomarkers of food intake, which will lead to more objective and robust measures of dietary exposure. In addition, nutrigenomics may have applications in the development of personalised nutrition interventions, which may facilitate larger, more appropriate and sustained changes in eating (and other lifestyle) behaviours and help to reduce health inequalities.
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de Las Hazas MCL, Motilva MJ, Piñol C, Macià A. Application of dried blood spot cards to determine olive oil phenols (hydroxytyrosol metabolites) in human blood. Talanta 2016; 159:189-193. [PMID: 27474297 DOI: 10.1016/j.talanta.2016.06.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Revised: 06/09/2016] [Accepted: 06/14/2016] [Indexed: 11/28/2022]
Abstract
In this study, a fast and simple blood sampling and sample pre-treatment method based on the use of the dried blood spot (DBS) cards and ultra-performance liquid chromatography coupled to tandem mass spectrometry (UPLC-MS/MS) for the quantification of olive oil phenolic metabolites in human blood was developed and validated. After validation, the method was applied to determine hydroxytyrosol metabolites in human blood samples after the acute intake of an olive oil phenolic extract. Using the FTA DMPK-A DBS card under optimum conditions, with 20µL as the blood solution volume, 100µL of methanol/Milli-Q water (50/50, v/v) as the extraction solvent and 7 disks punched out from the card, the main hydroxytyrosol metabolites (hydroxytyrosol-3-O-sulphate and hydroxytyrosol acetate sulphate) were identified and quantified. The developed methodology allowed detecting and quantifying the generated metabolites at low μM levels. The proposed method is a significant improvement over existing methods to determine phenolic metabolites circulating in blood and plasma samples, thus making blood sampling possible with the volunteer pricking their own finger, and the subsequent storage of the blood in the DBS cards prior to chromatographic analysis.
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Affiliation(s)
- María Carmen López de Las Hazas
- Food Technology Department, Agrotecnio Center, Escola Tècnica Superior d'Enginyeria Agrària, University of Lleida, Avda. Alcalde Rovira Roure 191, 25198 Lleida, Spain
| | - Maria José Motilva
- Food Technology Department, Agrotecnio Center, Escola Tècnica Superior d'Enginyeria Agrària, University of Lleida, Avda. Alcalde Rovira Roure 191, 25198 Lleida, Spain
| | - Carme Piñol
- Department of Medicine, Facultat de Medicina, University of Lleida, Avda/Alcalde Rovira Roure 80, 25198 Lleida, Spain
| | - Alba Macià
- Food Technology Department, Agrotecnio Center, Escola Tècnica Superior d'Enginyeria Agrària, University of Lleida, Avda. Alcalde Rovira Roure 191, 25198 Lleida, Spain.
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Biomarkers for nutrient intake with focus on alternative sampling techniques. GENES AND NUTRITION 2016; 11:12. [PMID: 27551313 PMCID: PMC4968438 DOI: 10.1186/s12263-016-0527-1] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Accepted: 03/31/2016] [Indexed: 01/06/2023]
Abstract
Biomarkers of nutrient intake or nutrient status are important objective measures of foods/nutrients as one of the most important environmental factors people are exposed to. It is very difficult to obtain accurate data on individual food intake, and there is a large variation of nutrient composition of foods consumed in a population. Thus, it is difficult to obtain precise measures of exposure to different nutrients and thereby be able to understand the relationship between diet, health, and disease. This is the background for investing considerable resources in studying biomarkers of nutrients believed to be important in our foods. Modern technology with high sensitivity and specificity concerning many nutrient biomarkers has allowed an interesting development with analyses of very small amounts of blood or tissue material. In combination with non-professional collection of blood by finger-pricking and collection on filters or sticks, this may make collection of samples and analyses of biomarkers much more available for scientists as well as health professionals and even lay people in particular in relation to the marked trend of self-monitoring of body functions linked to mobile phone technology. Assuming standard operating procedures are used for collection, drying, transport, extraction, and analysis of samples, it turns out that many analytes of nutritional interest can be measured like metabolites, drugs, lipids, vitamins, minerals, and many types of peptides and proteins. The advantage of this alternative sampling technology is that non-professionals can collect, dry, and mail the samples; the samples can often be stored under room temperature in a dry atmosphere, requiring small amounts of blood. Another promising area is the potential relation between the microbiome and biomarkers that may be measured in feces as well as in blood.
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Yeung EH, Louis GB, Lawrence D, Kannan K, McLain AC, Caggana M, Druschel C, Bell E. Eliciting parental support for the use of newborn blood spots for pediatric research. BMC Med Res Methodol 2016; 16:14. [PMID: 26846420 PMCID: PMC4741027 DOI: 10.1186/s12874-016-0120-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2015] [Accepted: 02/02/2016] [Indexed: 11/18/2022] Open
Abstract
Background Biomarkers of exposures such as infection or environmental chemicals can be measured in small volumes of blood extracted from newborn dried blood spots (DBS) underscoring their potential utility for population-based research. However, few studies have evaluated the feasibility and utility of this resource; particularly the factors associated with parental consent, and the ability to retrieve banked samples with sufficient remaining volume for epidemiologic research. Methods At 8 months postpartum, 5,034 mothers of infants born (2008–2010) in New York (57 counties excluding New York City) were asked to consent for the use of residual DBS for the quantification of cytokines and environmental chemicals. Mothers were part of the Upstate KIDS study, a longitudinal birth cohort designed to evaluate child development through 3 years of age. Information on parental and infant characteristics was obtained from birth certificates and maternal report at 4 months postpartum. Multivariate logistic regression was used to identify factors associated with parental consent and with successful retrieval of DBS. Results Sixty-two percent (n = 3125) of parents consented. Factors significantly associated with consent included non-Hispanic ethnicity (odds ratio 2.04; 95 % CI: 1.43–2.94), parity (1.29; 1.05–1.57), maternal obesity (1.42; 1.11–1.80) and reported alcohol use during pregnancy (1.51; 1.12–2.06). However, these associations corresponded to small absolute differences in proportions (4 to 8 %), suggesting that the two groups remained comparable. Infant characteristics such as preterm delivery did not significantly differ by consent status among singletons and only ventilator use (OR 2.39; 95 % CI: 1.06–5.41) remained borderline significant among twins in adjusted analyses. Among consented infants, 99 % had at least one 3.2 mm punch successfully retrieved for biomarker analyses and 84 % had a full DBS circle available. Conclusion Parental characteristics varied slightly by consent, and the availability of samples for research purposes was high, demonstrating the feasibility of this resource for population based research.
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Affiliation(s)
- Edwina H Yeung
- Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, 6100 Executive Blvd, 7B03, Rockville, MD, 20852, USA.
| | - Germaine Buck Louis
- Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, 6100 Executive Blvd, 7B03, Rockville, MD, 20852, USA
| | - David Lawrence
- Laboratory of Immunology, Wadsworth Center, Center for Medical Science, Albany, NY, 12203, USA.,Department of Environmental Health Sciences, University at Albany School of Public Health, Albany, USA
| | - Kurunthachalam Kannan
- Laboratory of Organic Analytical Chemistry, Wadsworth Center, New York State Department of Health, Albany, NY, 12203, USA.,Department of Environmental Health Sciences, University at Albany School of Public Health, Albany, USA
| | - Alexander C McLain
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, Columbia, SC, USA
| | - Michele Caggana
- Laboratory of Human Genetics, Wadsworth Center, New York State Department of Health, Albany, NY, 12203, USA
| | - Charlotte Druschel
- Bureau of Environmental and Occupational Epidemiology, Center for Environmental Health, New York State Department of Health, Albany, NY, 12203, USA.,Department of Epidemiology and Biostatistics, University at Albany School of Public Health, Albany, NY, 12144, USA
| | - Erin Bell
- Department of Environmental Health Sciences, University at Albany School of Public Health, Albany, USA.,Department of Epidemiology and Biostatistics, University at Albany School of Public Health, Albany, NY, 12144, USA
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