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Reed RG, Hillmann AR, Nation M, Braksator S, Sigler K. Remote dried blood spot collection for inflammatory markers in older adults is feasible, reliable, and valid. Brain Behav Immun 2024; 120:545-553. [PMID: 38971206 DOI: 10.1016/j.bbi.2024.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Revised: 05/24/2024] [Accepted: 07/03/2024] [Indexed: 07/08/2024] Open
Abstract
Dried blood spots (DBS) provide a minimally invasive method to assess inflammatory markers and can be collected remotely at-home or in-person in the lab. However, there is a lack of methodological information comparing these different collection methods and in older adults. We investigated the feasibility (including adherence, yield, quality, and participant preferences) and measurement properties (reliability, validity) of remotely collected DBS inflammatory markers in older adults. Participants (N = 167, mean age = 72, range: 60-96 years) collected their own DBS (finger prick on filter paper) during three remote interviews over ∼ 6 months. Within 4-5 days on average of their last remote interview, a subset of 41 participants also attended an in-person lab visit that included a researcher-collected DBS sample, venous blood draw, and survey to assess participant preferences of DBS collection. DBS and venous blood were assayed for CRP, IL-6, and TNF-α. Adherence: 98% of expected DBS samples (493 out of 501) were completed and mailed back to the lab. Yield: 97% of DBS samples were sufficient for all assays. Quality: On average, 0.80 fewer optimal spots (60uL of blood that filled the entire circle) were obtained remotely vs. in-person (p = 0.013), but the number of useable or better spots (at least 30-40uL of blood) did not differ (p = 0.89). Preference: A slight majority of participants (54%) preferred in-person DBS collection. Reliability: DBS test-retest reliabilities were good: CRP (ICC = 0.74), IL-6 (ICC = 0.76), and TNF-α (ICC = 0.70). Validity: Inflammatory levels from DBS correlated strongly with levels from venous blood (r = 0.60-0.99) and correlated as expected with sociodemographic and physical health and function variables. Older adults can remotely collect their own DBS to acquire reliable and valid inflammatory data. Remote DBS collection is highly feasible and may allow for inflammatory markers to be assessed in larger, more representative samples than are possible with lab- or clinic-based research designs.
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Affiliation(s)
- Rebecca G Reed
- Department of Psychology, University of Pittsburgh, PA, United States.
| | - Abby R Hillmann
- Department of Psychology, University of Pittsburgh, PA, United States
| | - Maegan Nation
- Department of Psychology, University of Nevada, Las Vegas, NV, United States
| | - Shay Braksator
- Illinois School of Professional Psychology, Chicago, IL, United States
| | - Kirby Sigler
- Department of Psychology, University of Pittsburgh, PA, United States
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2
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McNiven M, Thevaranjan N, Yau D, Robertson J, Oluwole O, Buse J, Inman M. Dried Blood Spot Test for Glycated Hemoglobin Measurement in Pediatric Diabetes Care. Can J Diabetes 2024; 48:74-81. [PMID: 37839678 DOI: 10.1016/j.jcjd.2023.10.401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 09/14/2023] [Accepted: 10/08/2023] [Indexed: 10/17/2023]
Abstract
BACKGROUND The dried blood spot (DBS) card is a novel collection method for measuring glycated hemoglobin (A1C) in individuals with diabetes mellitus. The potential benefits of DBS specimens compared with traditional phlebotomy include a reduction in required total blood volume, reduced procedural pain, and an ability for self-initiated collection. DBS cards for A1C measurement have been validated in the adult population, but there is a paucity of pediatric data. METHODS The aim of this study was to validate the use of A1C measurement by DBS cards in comparison to venous A1C and to identify potential barriers to implementing this novel approach. Venous and DBS card A1C samples were collected simultaneously from 62 patients at their local laboratory and transported to the central provincial lab for analysis. Correlation analyses compared venous and DBS A1C with data rescaling performed to account for the DBS-venous interassay difference. RESULTS Mean venous A1C was 7.49% and DBS A1C was 7.26%, with an interassay difference of 0.23%. Data showed a strong, positive correlation between A1C collection methods (r=0.86, p<0.001); this was further strengthened at lower A1C values (A1C <7.5%, r=0.87, p<0.0001). A stronger relationship emerged when the data were rescaled to account for the DBS-venous interassay difference (r=0.8935, p<0.0001). CONCLUSIONS Given the potential feasibility, practicality, accessibility, cost-effectiveness, and performance characteristics of the DBS A1C, especially at lower A1C values hovering around the diagnostic threshold for diabetes, this study provides supporting evidence for consideration of the use of DBS A1C testing in pediatric diabetes care.
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Affiliation(s)
- Mallory McNiven
- Department of Pediatrics, University of Saskatchewan, Regina, Saskatchewan, Canada
| | - Netusha Thevaranjan
- Department of Pediatrics, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Daphne Yau
- Department of Pediatrics, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - James Robertson
- Department of Pediatrics, University of Saskatchewan, Regina, Saskatchewan, Canada
| | - Oluwafemi Oluwole
- Department of Pediatrics, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Joshua Buse
- Department of Pathology and Laboratory Medicine, University of Saskatchewan, Regina, Saskatchewan, Canada
| | - Mark Inman
- Department of Pediatrics, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.
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Jacobson T, Bae Y, Kler JS, Iyer R, Zhang R, Montgomery ND, Nunes D, Pleil JD, Funk WE. Advancing Global Health Surveillance of Mycotoxin Exposures using Minimally Invasive Sampling Techniques: A State-of-the-Science Review. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:3580-3594. [PMID: 38354120 PMCID: PMC10903514 DOI: 10.1021/acs.est.3c04981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 01/14/2024] [Accepted: 01/16/2024] [Indexed: 02/16/2024]
Abstract
Mycotoxins are a heterogeneous group of toxins produced by fungi that can grow in staple crops (e.g., maize, cereals), resulting in health risks due to widespread exposure from human consumption and inhalation. Dried blood spot (DBS), dried serum spot (DSS), and volumetric tip microsampling (VTS) assays were developed and validated for several important mycotoxins. This review summarizes studies that have developed these assays to monitor mycotoxin exposures in human biological samples and highlights future directions to facilitate minimally invasive sampling techniques as global public health tools. A systematic search of PubMed (MEDLINE), Embase (Elsevier), and CINAHL (EBSCO) was conducted. Key assay performance metrics were extracted to provide a critical review of the available methods. This search identified 11 published reports related to measuring mycotoxins (ochratoxins, aflatoxins, and fumonisins) using DBS/DSS and VTS assays. Multimycotoxin assays adapted for DBS/DSS and VTS have undergone sufficient laboratory validation for applications in large-scale population health and human biomonitoring studies. Future work should expand the number of mycotoxins that can be measured in multimycotoxin assays, continue to improve multimycotoxin assay sensitivities of several biomarkers with low detection rates, and validate multimycotoxin assays across diverse populations with varying exposure levels. Validated low-cost and ultrasensitive minimally invasive sampling methods should be deployed in human biomonitoring and public health surveillance studies to guide policy interventions to reduce inequities in global mycotoxin exposures.
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Affiliation(s)
- Tyler
A. Jacobson
- Department
of Preventive Medicine, Northwestern University
Feinberg School of Medicine, Chicago, Illinois 60611, United States
| | - Yeunook Bae
- Department
of Preventive Medicine, Northwestern University
Feinberg School of Medicine, Chicago, Illinois 60611, United States
| | - Jasdeep S. Kler
- University
of Michigan Medical School, Ann Arbor, Michigan 48109, United States
| | - Ramsunder Iyer
- Department
of Preventive Medicine, Northwestern University
Feinberg School of Medicine, Chicago, Illinois 60611, United States
| | - Runze Zhang
- Department
of Preventive Medicine, Northwestern University
Feinberg School of Medicine, Chicago, Illinois 60611, United States
| | - Nathan D. Montgomery
- Department
of Preventive Medicine, Northwestern University
Feinberg School of Medicine, Chicago, Illinois 60611, United States
| | - Denise Nunes
- Galter
Health Sciences Library, Northwestern University
Feinberg School of Medicine, Chicago, Illinois 60611, United States
| | - Joachim D. Pleil
- Department
of Environmental Sciences and Engineering, Gillings School of Public
Health, University of North Carolina, Chapel Hill, North Carolina 27599, United States
| | - William E. Funk
- Department
of Preventive Medicine, Northwestern University
Feinberg School of Medicine, Chicago, Illinois 60611, United States
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Verougstraete N, Stove V, Stove CP. Remote HbA 1c testing via microsampling: fit for purpose? Clin Chem Lab Med 2024; 62:3-17. [PMID: 37419657 DOI: 10.1515/cclm-2023-0228] [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: 03/02/2023] [Accepted: 06/06/2023] [Indexed: 07/09/2023]
Abstract
The collection of capillary blood microsamples via finger-prick has several advantages over traditional blood collection. It is considered convenient and more patient-centric, enabling collection of the sample by the patient at her/his home with subsequent analysis in the lab following postal shipment. Determination of the diabetes biomarker HbA1c in self-collected microsamples to remotely monitor diabetes patients seems to be a very promising option which could eventually lead to better treatment adaptations and disease control. This is especially convenient/relevant for patients living in areas where venipuncture is impractical, or to support virtual consultations using telemedicine. Over the years, a substantial numbers of reports on HbA1c and microsampling have been published. However, the heterogeneity of the applied study designs and data evaluation is remarkable. This review provides a general and critical overview of these papers, along with specific points of attention that should be dealt with when aiming at implementing microsampling for reliable HbA1c determination. We focus on the used (dried) blood microsampling techniques, collection conditions, stability of the microsamples, sample extraction, analytical methods, method validation, correlation studies with conventional venous blood samples and patient satisfaction. Lastly, the possibility of using liquid instead of dried blood microsamples is discussed. Liquid blood microsampling is expected to have similar advantages as dried blood microsampling and several studies suggest it to be a suitable approach to collect samples remotely for subsequent HbA1c analysis in the lab.
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Affiliation(s)
- Nick Verougstraete
- Laboratory of Toxicology, Department of Bioanalysis, Faculty of Pharmaceutical Sciences, Ghent University, Ghent, Belgium
- Department of Laboratory Medicine, Ghent University Hospital, Ghent, Belgium
| | - Veronique Stove
- Department of Laboratory Medicine, Ghent University Hospital, Ghent, Belgium
- Department of Diagnostic Sciences, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
| | - Christophe P Stove
- Laboratory of Toxicology, Department of Bioanalysis, Faculty of Pharmaceutical Sciences, Ghent University, Ghent, Belgium
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Saberi P, Stoner MCD, McCuistian CL, Balaban C, Ming K, Wagner D, Chakraborty B, Smith L, Sukhija-Cohen A, Neilands TB, Gruber VA, Johnson MO. iVY: protocol for a randomised clinical trial to test the effect of a technology-based intervention to improve virological suppression among young adults with HIV in the USA. BMJ Open 2023; 13:e077676. [PMID: 37802624 PMCID: PMC10565330 DOI: 10.1136/bmjopen-2023-077676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 09/19/2023] [Indexed: 10/10/2023] Open
Abstract
INTRODUCTION Young adults with HIV (YWH) experience worse clinical outcomes than adults and have high rates of substance use (SU) and mental illness that impact their engagement in care and adherence to antiretroviral therapy (ART). The intervention for Virologic Suppression in Youth (iVY) aims to address treatment engagement/adherence, mental health (MH) and SU in a tailored manner using a differentiated care approach that is youth friendly. Findings will provide information about the impact of iVY on HIV virological suppression, MH and SU among YWH who are disproportionately impacted by HIV and at elevated risk for poor health outcomes. METHODS AND ANALYSIS The iVY study will test the effect of a technology-based intervention with differing levels of resource requirements (ie, financial and personnel time) in a randomised clinical trial with an adaptive treatment strategy among 200 YWH (18-29 years old). The primary outcome is HIV virological suppression measured via dried blood spot. This piloted and protocolised intervention combines: (1) brief weekly sessions with a counsellor via a video-chat platform (video-counselling) to discuss MH, SU, HIV care engagement/adherence and other barriers to care; and (2) a mobile health app to address barriers such as ART forgetfulness, and social isolation. iVY has the potential to address important, distinct and changing barriers to HIV care engagement (eg, MH, SU) to increase virological suppression among YWH at elevated risk for poor health outcomes. ETHICS AND DISSEMINATION This study and its protocols have been approved by the University of California, San Francisco Institutional Review Board. Study staff will work with a Youth Advisory Panel to disseminate results to YWH, participants and the academic community. TRIAL REGISTRATION NUMBER NCT05877729.
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Affiliation(s)
- Parya Saberi
- Center for AIDS Prevention Studies, University of California San Francisco, San Francisco, California, USA
| | - Marie C D Stoner
- Women's Global Health Imperative, RTI International, Berkeley, California, USA
| | - Caravella L McCuistian
- Department of Psychiatry and Behavioral Sciences, University of California San Francisco, San Francisco, CA, USA
| | - Celeste Balaban
- Center for AIDS Prevention Studies, University of California San Francisco, San Francisco, California, USA
| | - Kristin Ming
- Center for AIDS Prevention Studies, University of California San Francisco, San Francisco, California, USA
| | - Danielle Wagner
- Women's Global Health Imperative, RTI International, Berkeley, California, USA
| | - Bibhas Chakraborty
- Department of Biostatistics and Bioinformatics, Duke University, Durham, NC, NC, USA
- Centre for Quantitative Medicine and Program in Health Services and Systems Research, Duke-NUS Medical School, Singapore
- Department of Statistics and Data Science, National University of Singapore, Singapore
| | - Louis Smith
- Center for AIDS Prevention Studies, University of California San Francisco, San Francisco, California, USA
| | | | - Torsten B Neilands
- Center for AIDS Prevention Studies, University of California San Francisco, San Francisco, California, USA
| | - Valerie A Gruber
- Department of Psychiatry and Behavioral Sciences, University of California San Francisco, San Francisco, CA, USA
| | - Mallory O Johnson
- Center for AIDS Prevention Studies, University of California San Francisco, San Francisco, California, USA
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Kumari M, Andrayas A, Al Baghal T, Burton J, Crossley TF, Jones KS, Parkington DA, Koulman A, Benzeval M. A randomised study of nurse collected venous blood and self-collected dried blood spots for the assessment of cardiovascular risk factors in the Understanding Society Innovation Panel. Sci Rep 2023; 13:13008. [PMID: 37563249 PMCID: PMC10415328 DOI: 10.1038/s41598-023-39674-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 07/28/2023] [Indexed: 08/12/2023] Open
Abstract
Dried blood spot (DBS) sample collection has been suggested as a less invasive, cheaper and more convenient alternative to venepuncture, which requires trained personnel, making it a potentially viable approach for self-collection of blood on a large scale. We examine whether participants in a longitudinal survey were willing to provide a DBS sample in different interview settings, and how resulting cardiovascular risk biomarkers compared with those from venous blood to calculate clinical risk. Participants of the Understanding Society Innovation Panel, a representative sample of UK households, were randomly assigned to three modes of interview. Most participants (84%) were interviewed in their allocated mode. Participants (n = 2162) were interviewed by a nurse who collected both a blood sample by venepuncture and a DBS card ('nurse collection') or participants were seen by an interviewer or took part in the survey online to self-collect a DBS card ('self-collection'). All DBS cards were returned in the post after the sample had dried. Lipids (total cholesterol, HDL-cholesterol, triglycerides), HbA1c and C-reactive protein were measured in venous and DBS samples and equivalence was calculated. The resultant values were used to confirm equivalent prevalence of risk of cardiovascular disease in each type of blood sample by mode of participation. Of participants interviewed by a nurse 69% consented to venous blood sample and 74% to a DBS sample, while in the self-collection modes, 35% consented to DBS collection. Demographic characteristics of participants in self-collection mode was not different to those in nurse collection mode. The percentage of participants with clinically raised biomarkers did not significantly differ between type of blood collection (for example, 62% had high cholesterol (> 5 mmol/l) measured by venepuncture and 67% had high cholesterol within the self-collected DBS sample (p = 0.13)). While self-collected DBS sampling had a lower response rate to DBS collected by a nurse, participation did not vary by key demographic characteristics. This study demonstrates that DBS collection is a feasible method of sample collection that can provide acceptable measures of clinically relevant biomarkers, enabling the calculation of population levels of cardiovascular disease risk.
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Affiliation(s)
- Meena Kumari
- Institute for Social and Economic Research, University of Essex, Colchester, UK.
| | - Alexandria Andrayas
- Institute for Social and Economic Research, University of Essex, Colchester, UK
- School of Life Sciences, University of Essex, Colchester, UK
- School of Psychological Science, University of Bristol, Bristol, UK
| | - Tarek Al Baghal
- Institute for Social and Economic Research, University of Essex, Colchester, UK
| | - Jonathan Burton
- Institute for Social and Economic Research, University of Essex, Colchester, UK
| | | | - Kerry S Jones
- Nutritional Biomarker Laboratory, MRC Epidemiology Unit, University of Cambridge, Cambridge, UK
| | - Damon A Parkington
- Nutritional Biomarker Laboratory, MRC Epidemiology Unit, University of Cambridge, Cambridge, UK
| | - Albert Koulman
- Nutritional Biomarker Laboratory, MRC Epidemiology Unit, University of Cambridge, Cambridge, UK
| | - Michaela Benzeval
- Institute for Social and Economic Research, University of Essex, Colchester, UK
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Linden G, Charão MF, Linden R. Evaluation of the HealthID PSD microsampling device for the simultaneous determination of cholesterol, high-density lipoprotein, triglycerides, creatinine, and HbA 1c in capillary blood. Clin Biochem 2023:110597. [PMID: 37307936 DOI: 10.1016/j.clinbiochem.2023.110597] [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: 01/31/2023] [Revised: 06/05/2023] [Accepted: 06/07/2023] [Indexed: 06/14/2023]
Abstract
INTRODUCTION The use of dried capillary microsamples for clinical chemistry testing is an interesting alternative to conventional phlebotomy. Sampling devices capable to produce plasma from whole blood application are particularly useful. The aim of this study was to validate theHealthID PSDmicrosampling device for the determination of cholesterol (CHOL), high-density lipoprotein (HDL), triglycerides (TRIG), creatinine (CRE), and glycated hemoglobin (HbA1c) after collection of capillary blood. METHODS Dried blood and plasma extracts were analyzed using modified methods in an open-channel biochemistry analyzer. The plasma volume in the extracts was corrected by the concentration of chloride (CL). Linearity, imprecision, bias, stability, and comparability to conventional samples were evaluated. RESULTS Dried plasma assays presented total error (TE) within acceptable limits. The analytes were stable for up to 14 days at 40 °C. Predicted serum concentrations of CHO, HDL, TRI, and CRE and predicted whole blood levels of HbA1c, using dried extracts measurements, did not presented systematic or proportional differences to serum and whole blood levels. CONCLUSIONS Dried sample extracts obtained with capillary blood applied to the HealthID PSD allowed the determination of CHO, HDL, TRI, CRE, and HbA1c, as well as the calculation of LDL level, using only 5 drops of blood. This sampling strategy can be useful for population screening programs, particularly in Developing Countries.
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Affiliation(s)
| | - Mariele Feiffer Charão
- HealthID Lab, Campo Bom, RS, Brazil; Graduate Program on Toxicology and Analytical Toxicology, Universidade Feevale, Novo Hamburgo, RS, Brazil
| | - Rafael Linden
- HealthID Lab, Campo Bom, RS, Brazil; Graduate Program on Toxicology and Analytical Toxicology, Universidade Feevale, Novo Hamburgo, RS, Brazil.
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Colley J, Dambha-Miller H, Stuart B, Bartholomew J, Benton M, Baykoca J, Price H. Home monitoring of haemoglobin A 1c in diabetes: A systematic review and narrative synthesis on accuracy, reliability and patient acceptability. Diabet Med 2023; 40:e15033. [PMID: 36562666 DOI: 10.1111/dme.15033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 12/02/2022] [Accepted: 12/21/2022] [Indexed: 12/24/2022]
Abstract
AIM In the UK people with diabetes who do not attend annual review appointments often have higher haemoglobin A1c (HbA1c ) levels. We aim to determine the acceptability of self-collected posted capillary blood samples, and if they produce accurate and reliable HbA1c results. METHODS We include adult studies comparing capillary blood to venous blood for measuring HbA1c . We exclude methods not suitable for postage. Electronic databases of MEDLINE, Embase, CINAHL, Web of Science, Google Scholar and OpenGrey were searched from inception to September 2021, as well as relevant conference abstracts. Two reviewers performed study selection, data extraction and risk of bias assessment independently. Narrative synthesis was performed. RESULTS Our search retrieved 3747 records. Following de-duplication and screening 30 articles were included. The mean difference (MD) and limits of agreement (LoA) between capillary and venous HbA1c were smaller and narrower respectively when micro/capillary tubes (micro/cap) were used for capillary blood storage compared to dried blood spots (capDBS) (micro/cap MD range -0.4 to 1.4 mmol/mol vs. capDBS MD range -4.3 to 7.2 mmol/mol, micro/cap LoA width 2.4 to 6 mmol/mol vs. capDBS LoA width 11.7 to 16.8 mmol/mol). After using self-collection kits, 83%-96% of participants reported satisfaction, 87%-99% found it easy and 69%-94% reported they would use it again. CONCLUSION Microtubes/capillary tubes look promising as a method of self-collecting and posting capillary blood samples for the measurement of HbA1c based on the accuracy and reliability findings presented. DBS samples demonstrated comparatively poorer accuracy. Data on acceptability were limited and further research is needed.
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Affiliation(s)
- Jack Colley
- Research and Development Department, Southern Health NHS Foundation Trust, Southampton, UK
| | | | - Beth Stuart
- Primary Care Research Centre, University of Southampton, Southampton, UK
| | - Jazz Bartholomew
- Research and Development Department, Southern Health NHS Foundation Trust, Southampton, UK
| | - Madeleine Benton
- Department of Psychological Medicine, Kings College London, London, UK
| | - Jeni Baykoca
- Department of Psychological Medicine, Kings College London, London, UK
| | - Hermione Price
- Research and Development Department, Southern Health NHS Foundation Trust, Southampton, UK
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Volumetric Absorptive Microsampling to Enhance the Therapeutic Drug Monitoring of Tacrolimus and Mycophenolic Acid: A Systematic Review and Critical Assessment. Ther Drug Monit 2023:00007691-990000000-00082. [PMID: 36728554 DOI: 10.1097/ftd.0000000000001066] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 10/23/2022] [Indexed: 02/03/2023]
Abstract
BACKGROUND Volumetric absorptive microsampling (VAMS) is an emerging technique that may support multisample collection to enhance therapeutic drug monitoring in solid organ transplantation. This review aimed to assess whether tacrolimus and mycophenolic acid can be reliably assayed using VAMS and to identify knowledge gaps by providing granularity to existing analytical methods and clinical applications. METHODS A systematic literature search was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. The PubMed, Embase, and Scopus databases were accessed for records from January 2014 to April 2022 to identify scientific reports on the clinical validation of VAMS for monitoring tacrolimus and mycophenolic acid concentrations. Data on the study population, sample sources, analytical methods, and comparison results were compiled. RESULTS Data from 12 studies were collected, including 9 studies pertaining to tacrolimus and 3 studies on the concurrent analysis of tacrolimus and mycophenolic acid. An additional 14 studies that provided information relevant to the secondary objectives (analytical validation and clinical application) were also included. The results of the clinical validation studies generally met the method agreement requirements described by regulatory agencies, but in many cases, it was essential to apply correction factors. CONCLUSIONSS Current evidence suggests that the existing analytical methods that use VAMS require additional optimization steps for the analysis of tacrolimus and mycophenolic acid. The recommendations put forth in this review can help guide future studies in achieving the goal of improving the care of transplant recipients by simplifying multisample collection for the dose optimization of these drugs.
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10
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Postal methods for monitoring HbA1c in diabetes mellitus: a protocol for systematic review. BJGP Open 2022; 6:BJGPO.2021.0240. [PMID: 35728816 PMCID: PMC9904771 DOI: 10.3399/bjgpo.2021.0240] [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: 12/20/2021] [Revised: 02/23/2022] [Accepted: 06/20/2022] [Indexed: 10/31/2022] Open
Abstract
BACKGROUND Worldwide there are an estimated 463 million people with diabetes. In the UK people with diabetes are offered annual review, which includes monitoring of haemoglobin A1c (HbA1c). This can identify people with diabetes who are not meeting their glycaemic targets, enabling early intervention. Those who do not attend these reviews often have poorer health outcomes. During the COVID-19 pandemic, there was a 77% reduction in monitoring of HbA1c in the UK. AIM It is hypothesised that people with diabetes could take finger-prick samples at home for measurement of HbA1c. This study will examine the agreement and correlation of capillary HbA1c values compared with a venous reference standard. It will explore reliability and repeatability of capillary HbA1c testing methods, as well as the direction of effect of storage variables. The study will also explore patient acceptability and safety. It will look at capillary blood methods that would be suitable for posting. DESIGN & SETTING A systematic review will be undertaken. METHOD The core terms of 'Diabetes', 'HbA1c' and 'Capillary sampling' will be used to search MEDLINE, Embase, Cumulative Index to Nursing and Allied Health Literature (CINAHL), Web of Science Core Collection, Google Scholar, OpenGrey, and other grey literature, from database inception until 2021. Risk of bias will be assessed using the 'COSMIN Risk of Bias tool to assess the quality of studies on reliability and measurement error'. CONCLUSION A narrative synthesis will be produced to explore whether there are viable postal alternatives to venous sampling, as well as exploring acceptability and safety of patient self-collection.
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11
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Groenendijk WN, Griffin TP, Islam MN, Blake L, Wall D, Bell M, O'Shea PM. Remote capillary blood collection for HbA 1c measurement during the COVID-19 pandemic: A laboratory and patient perspective. Diabet Med 2022; 39:e14897. [PMID: 35686665 PMCID: PMC9347990 DOI: 10.1111/dme.14897] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 05/25/2022] [Accepted: 05/27/2022] [Indexed: 12/15/2022]
Abstract
AIMS The purpose of this study was to assess the clinical performance and user acceptance of capillary blood samples prepared remotely using the MiniCollect® capillary blood collection device as an alternative to blood collection by venepuncture for glycated haemoglobin (HbA1c ) analysis. METHODS Following written informed consent, a cross-sectional study was conducted in individuals aged ≥18 years with any type of diabetes who routinely self-monitor their blood glucose. Eligible participants recruited whilst attending their routine clinical appointments were required to provide a venous blood sample, prepare a capillary blood sample at home (remotely) and complete a bespoke questionnaire. HbA1c in whole blood collected in ethylenediaminetetraacetic acid was determined by capillary electrophoresis on the Sebia Capillary's 3 Tera analyser following standard operating procedure. RESULTS HbA1c results from both venous and capillary collection demonstrated good agreement. Passing-Bablok regression: y = 0 + 1x (p = 0.18), Spearman correlation r = 0.986, p < 0.0001. The Bland-Altman difference plot provided a mean difference of 0.3 mmol/mol (2.2%). Over half of the participants found the MiniCollect device easy to use. The majority of participants were in favour of the remote capillary blood collection service and would use it if routinely available. CONCLUSION The home collection of capillary blood for HbA1c determination is a valuable and convenient alternative to standard venous blood collection as it provides an opportunity to support routine HbA1c monitoring, whilst mitigating the transmission of SARS-CoV-2. This service would additionally allow individuals to attend clinic visits with a HbA1c value, ensuring optimal continuance of patient care for individuals with diabetes.
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Affiliation(s)
- Wendy N. Groenendijk
- Department of Clinical BiochemistrySaolta University Health Care Group (SUHCG), Galway University HospitalsGalwayIreland
| | - Tomás P. Griffin
- Centre for Endocrinology, Diabetes Mellitus and MetabolismSaolta University Health Care Group (SUHCG), Galway University HospitalsGalwayIreland
- School of MedicineNational University of Ireland Galway (NUIG)GalwayIreland
| | - Md N. Islam
- Department of Clinical BiochemistrySaolta University Health Care Group (SUHCG), Galway University HospitalsGalwayIreland
| | - Liam Blake
- Department of Clinical BiochemistrySaolta University Health Care Group (SUHCG), Galway University HospitalsGalwayIreland
| | - Deirdre Wall
- School of Mathematics, Statistics and Applied MathematicsNational University of Ireland Galway (NUIG)GalwayIreland
| | - Marcia Bell
- Centre for Endocrinology, Diabetes Mellitus and MetabolismSaolta University Health Care Group (SUHCG), Galway University HospitalsGalwayIreland
| | - Paula M. O'Shea
- Department of Clinical BiochemistrySaolta University Health Care Group (SUHCG), Galway University HospitalsGalwayIreland
- School of MedicineNational University of Ireland Galway (NUIG)GalwayIreland
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12
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Marks BE, Wolfsdorf JI. Monitoring of paediatric type 1 diabetes. Curr Opin Pediatr 2022; 34:391-399. [PMID: 35836398 DOI: 10.1097/mop.0000000000001136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE OF REVIEW This article reviews recent developments in methods used to monitor paediatric type 1 diabetes (T1D), including an examination of the role of glycated haemoglobin (haemoglobin A1c) and its limitations for long-term assessment of glycaemia in individual patients, self-monitoring of blood glucose, continuous glucose monitoring (CGM) systems and ketone monitoring. RECENT FINDINGS Monitoring of glycemia and ketones, when indicated, is a cornerstone of paediatric T1D management and is essential to optimize glycaemic control. Ongoing technological advancements have led to rapid changes and considerable improvement in the methods used to monitor glucose concentrations in people with T1D. As a result of recent innovations that have enhanced accuracy and usability, CGM is now considered the optimal method for monitoring glucose concentrations and should be introduced soon after diagnosis of T1D. SUMMARY Patients/families and healthcare providers must receive comprehensive education and proper training in the use of CGM and interpretation of the vast amounts of data. Future challenges include ensuring equal access to and optimizing clinical use of CGM to further improve T1D care and outcomes.
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Affiliation(s)
- Brynn E Marks
- Children's National Hospital, Division of Endocrinology, Washington, District of Columbia
| | - Joseph I Wolfsdorf
- Boston Children's Hospital, Division of Endocrinology, Boston, Massachusetts, USA
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13
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Serum glucose, a cost-effective alternate of plasma glucose in diagnosing and monitoring diabetes mellitus. Int J Diabetes Dev Ctries 2022. [DOI: 10.1007/s13410-022-01106-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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14
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Morrissey EC, Byrne M, Casey B, Casey D, Gillespie P, Hobbins A, Lowry M, McCarthy E, Newell J, Roshan D, Sharma S, Dinneen SF. Improving outcomes among young adults with type 1 diabetes: the D1 Now pilot cluster randomised controlled trial. Pilot Feasibility Stud 2022; 8:56. [PMID: 35260182 PMCID: PMC8902268 DOI: 10.1186/s40814-022-00986-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 01/19/2022] [Indexed: 12/04/2022] Open
Abstract
Background The D1 Now intervention is designed to improve outcomes in young adults living with type 1 diabetes. It consists of three components: an agenda-setting tool, an interactive messaging system and a support worker. The aim of the D1 Now pilot cluster randomised controlled trial (RCT) was to gather and analyse acceptability and feasibility data to allow (1) further refinement of the D1 Now intervention, and (2) determination of the feasibility of evaluating the D1 Now intervention in a future definitive RCT. Methods A pilot cluster RCT with two intervention arms and a control arm was conducted over 12 months. Quantitative data collection was based on a core outcome set and took place at baseline and 12 months. Semi-structured interviews with participants took place at 6, 9 and 12 months. Fidelity and health economic costings were also assessed. Results Four diabetes centres and 57 young adults living with type 1 diabetes took part. 50% of eligible young adults were recruited and total loss to follow-up was 12%. Fidelity, as measured on a study delivery checklist, was good but there were three minor processes that were not delivered as intended in the protocol. Overall, the qualitative data demonstrated that the intervention was considered acceptable and feasible, though this differed across intervention components. The agenda-setting tool and support worker intervention components were acceptable to both young adults and staff, but views on the interactive messaging system were mixed. Conclusions Some modifications are required to the D1 Now intervention components and research processes but with these in place progression to a definitive RCT is considered feasible. Trial registration ISRCTN (ref: ISRCTN74114336) Supplementary Information The online version contains supplementary material available at 10.1186/s40814-022-00986-5.
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15
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Cross J, Sharma S, John WG, Rayman G. Validation and feasibility of a postal system for remote monitoring of HbA1c. BMJ Open Diabetes Res Care 2021; 9:9/2/e002527. [PMID: 34782336 PMCID: PMC8593276 DOI: 10.1136/bmjdrc-2021-002527] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 10/17/2021] [Indexed: 11/04/2022] Open
Abstract
INTRODUCTION The COVID-19 pandemic has reduced the accessibility to hemoglobin A1c (HbA1c) tests required for virtual diabetes clinics. The aim was to develop and validate a user-friendly postal system for remote HbA1c monitoring. RESEARCH DESIGN AND METHODS Validation: A total of 123 capillary blood samples from people with diabetes (PWD) needing face-to-face consultations along with healthy volunteers were measured on a point-of-care (POC) Siemens DCA Vantage Analyzer. Another sample of 5-10 drops was simultaneously collected in a K2EDTA tube (BD Microtainer) and stored for up to 12 days at room temperature for subsequent retesting. Feasibility: During October to December 2020, a total of 286 postal HbA1c kits were sent to PWD prior to their virtual consultation. These contained sample collection guidance, the necessary equipment and a feedback form. As per Packing Instruction 650 regulations, these were posted back to the diabetes center for HbA1c testing on the POC analyzer. RESULTS There was a strong correlation between the first and the stored sample (R2=0.978). There was a small clinically insignificant negative bias -1.53 mmol/mol (2 SD = 3.10 mmol/mol). Bland-Altman plots showed 93% of results within 2 SD. Of the 87% of returned kits, only one sample failed to be analyzed. 94% of PWD who provided feedback were happy to use the postal HbA1c system again. CONCLUSIONS A robust user-friendly postal HbA1c system has been created and successfully integrated into clinical practice using the existing POC equipment at the diabetes center. It provides accurate HbA1c results and is an invaluable tool for remote monitoring of HbA1c in PWD-both during and after the pandemic.
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Affiliation(s)
- Jen Cross
- Deptartment of Diabetes and Endocrinology, Ipswich Hospital NHS Trust, Ipswich, UK
| | - Sanjeev Sharma
- Deptartment of Diabetes and Endocrinology, Ipswich Hospital NHS Trust, Ipswich, UK
| | - W Garry John
- Clinical Biochemistry, Norfolk and Norwich University Hospital NHS Trust, Norwich, UK
| | - Gerry Rayman
- Deptartment of Diabetes and Endocrinology, Ipswich Hospital NHS Trust, Ipswich, UK
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16
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Diagnostic Accuracy of Dried Blood Spots Collected on HemaSpot HF Devices Compared to Venous Blood Specimens To Estimate Measles and Rubella Seroprevalence. mSphere 2021; 6:e0133020. [PMID: 34259557 PMCID: PMC8386429 DOI: 10.1128/msphere.01330-20] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Fingerprick blood spotted onto filter paper offers an alternative to venous blood for use in population-based surveillance because it is comparatively inexpensive, acceptable, and easy to manage in the field. Prior studies have shown excellent agreement for immunoglobulin G (IgG) antibody detection from dried blood spots (DBS) and venous blood samples. However, much of this evidence is from high-income settings or laboratories where the samples were unlikely to be exposed to extreme temperatures and humidity, factors known to degrade DBS. We report the diagnostic accuracy of DBS collected using HemaSpot HF devices against venous sera in measuring measles- and rubella-specific IgG antibodies in a household serosurvey conducted in two districts in India. Paired serum and DBS samples collected by fingerprick were collected from women aged 15 to 50 years enrolled in a serosurvey in Palghar District of Maharashtra and Kanpur Nagar District of Uttar Pradesh in India. Specimen quality and volume were assessed in the laboratory. Samples were tested for antimeasles and antirubella IgG antibodies by an enzyme-linked immunosorbent assay (ELISA) (Euroimmun). Sensitivity of antibody detection by DBS was greater than 98%, and specificity was 90% and 98%, for measles and rubella IgG, respectively. Antibody concentrations were strongly correlated between paired specimens with adequate volume (measles R2 = 0.94; rubella R2 = 0.89). Although correlation was poor if DBS specimens had lower volumes, impact on qualitative results was minimal. This study showed DBS collected with HemaSpot HF devices can generate highly accurate results of measles- and rubella-specific IgG compared to sera in community-based surveys when protocols are optimized for DBS specimens. IMPORTANCE Dried blood spot (DBS) collection provides an easy, practical, and acceptable alternative to venous blood collection, especially for community-based studies, provided that results from DBS are accurate. We demonstrated high sensitivity and specificity for measles- and rubella-specific immunoglobulin G (IgG) with DBS collected via HemaSpot HF devices compared to serum samples. This is one of the largest community-based diagnostic accuracy studies of measles and rubella antibody testing with DBS and the first application we are aware of using HemaSpot HF device for measles and rubella serology. Results support the use of DBS in community-based serosurveillance.
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17
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Delahaye L, Veenhof H, Koch BCP, Alffenaar JWC, Linden R, Stove C. Alternative Sampling Devices to Collect Dried Blood Microsamples: State-of-the-Art. Ther Drug Monit 2021; 43:310-321. [PMID: 33470777 DOI: 10.1097/ftd.0000000000000864] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 11/20/2020] [Indexed: 12/14/2022]
Abstract
ABSTRACT Dried blood spots (DBS) have been used in newborn screening programs for several years. More recently, there has been growing interest in using DBS as a home sampling tool for the quantitative determination of analytes. However, this presents challenges, mainly because of the well-known hematocrit effect and other DBS-specific parameters, including spotted volume and punch site, which could add to the method uncertainty. Therefore, new microsampling devices that quantitatively collect capillary dried blood are continuously being developed. In this review, we provided an overview of devices that are commercially available or under development that allow the quantitative (volumetric) collection of dried blood (-based) microsamples and are meant to be used for home or remote sampling. Considering the field of therapeutic drug monitoring (TDM), we examined different aspects that are important for a device to be implemented in clinical practice, including ease of patient use, technical performance, and ease of integration in the workflow of a clinical laboratory. Costs related to microsampling devices are briefly discussed, because this additionally plays an important role in the decision-making process. Although the added value of home sampling for TDM and the willingness of patients to perform home sampling have been demonstrated in some studies, real clinical implementation is progressing at a slower pace. More extensive evaluation of these newly developed devices, not only analytically but also clinically, is needed to demonstrate their real-life applicability, which is a prerequisite for their use in the field of TDM.
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Affiliation(s)
- Lisa Delahaye
- Laboratory of Toxicology, Department of Bioanalysis, Faculty of Pharmaceutical Sciences, Ghent University, Belgium
| | - Herman Veenhof
- University of Groningen, Department of Clinical Pharmacy and Pharmacology, University Medical Center Groningen, Groningen, The Netherlands
| | - Birgit C P Koch
- Department of Hospital Pharmacy, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - Jan-Willem C Alffenaar
- Sydney Pharmacy School, Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW, Australia
- Department of Pharmacy, Westmead Hospital, Westmead, NSW, Australia
- Marie Bashir Institute of Infectious Diseases and Biosecurity, The University of Sydney, Camperdown, NSW, Australia; and
| | - Rafael Linden
- Laboratory of Analytical Toxicology, Institute of Health Sciences, Universidade Feevale, Novo Hamburgo, RS, Brazil
| | - Christophe Stove
- Laboratory of Toxicology, Department of Bioanalysis, Faculty of Pharmaceutical Sciences, Ghent University, Belgium
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18
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Kariuki JK, Gibbs BB, Erickson KI, Kriska A, Sereika S, Ogutu D, Milton H, Wagner L, Rao N, Peralta R, Bobb J, Bermudez A, Hirshfield S, Goetze T, Burke LE. The feasibility and acceptability of a web-based physical activity for the heart (PATH) intervention designed to reduce the risk of heart disease among inactive African Americans: Protocol for a pilot randomized controlled trial. Contemp Clin Trials 2021; 104:106380. [PMID: 33798731 PMCID: PMC8180502 DOI: 10.1016/j.cct.2021.106380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 03/24/2021] [Accepted: 03/26/2021] [Indexed: 10/21/2022]
Abstract
BACKGROUND Many studies have used the internet to promote physical activity (PA) in several settings, including the home environment, but few have been tailored for African Americans (AAs). To address this research gap, we conducted focus groups with AAs to inform the development of a web-based intervention, Physical Activity for The Heart (PATH), that leverages openly accessible platforms, such as YouTube, to promote PA in any setting. PURPOSE To describe the rationale and design of a pilot randomized clinical trial (RCT), that examines the feasibility and acceptability of the PATH intervention among 30 AA adults aged 40--70 years without history of cardiovascular disease. METHODS A 12-week, single-site, wait-listed RCT with subjects randomized 1:1 to either: 1) treatment group - participants receive the PATH intervention, including the online portal and twice a month phone calls from a PA coach, or 2) attention control group - participants receive a self-help PA handout and twice a month general health newsletter. All participants self-monitor step count using actigraphy. The primary outcomes of this 12-week, pilot RCT are recruitment, retention, and adherence to self-monitoring (Actigraph wear time) and the intervention protocol (PATH utilization). The secondary outcomes include changes in PA (step count, moderate-to-vigorous PA, exercise self-efficacy), and cardiometabolic risk (HbA1C, HDL, LDL, total cholesterol, type 2 diabetes risk score, percent body fat, weight, and waist circumference) from baseline to 12 weeks. CONCLUSIONS This study will provide PATH intervention feasibility and acceptability data among inactive AA adults and will inform a future, full-scale RCT testing efficacy.
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Affiliation(s)
| | | | | | | | | | - David Ogutu
- Ritiko Cloud-based Home-care Software, MA, USA
| | | | | | - Neel Rao
- University of Pittsburgh, PA, USA
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19
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Validation of dried blood spot sample modifications to two commercially available COVID-19 IgG antibody immunoassays. Bioanalysis 2020; 13:13-28. [PMID: 33319585 PMCID: PMC7739400 DOI: 10.4155/bio-2020-0289] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Aim: Coronavirus disease 2019 antibody testing often relies on venous blood collection, which is labor-intensive, inconvenient and expensive compared with finger-stick capillary dried blood spot (DBS) collection. The purpose of our work was to determine if two commercially available anti-severe acute respiratory syndrome coronavirus 2 enzyme-linked immunosorbent assays for IgG antibodies against spike S1 subunit and nucleocapsid proteins could be validated for use with DBS. Materials & methods: Kit supplied reagents were used to extract DBS, and in-house DBS calibrators were included on every run. Results: Positive/negative concordance between DBS and serum was 100/99.3% for the spike S1 subunit assay and 100/98% for the nucleocapsid assay. Conclusion: Validation of the DBS Coronavirus disease 2019 IgG antibody assays demonstrated that serum and DBS can produce equivalent results with minimal kit modifications.
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20
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Technological advancement in dry blood matrix microsampling and its clinical relevance in quantitative drug analysis. Bioanalysis 2020; 12:1483-1501. [DOI: 10.4155/bio-2020-0211] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
In the past few decades, dried blood matrix biosampling has witnessed a marvelous interest among the researcher due to its user-friendly operation during blood sampling in preclinical and clinical applications. It also complies with the basic 3Rs (reduce, reuse and recycle) philosophy. Because of comparative simplicity, a huge number of researchers are paying attention to its technological advancements for widespread application in the bioanalysis and diagnosis arena. In this review, we have explained different approaches to be considered during dried blood matrix based microsampling including their clinical relevance in therapeutic drug monitoring. We have also discussed various strategies for avoiding and minimizing major unwanted analytical interferences associated with this technique during drug quantification. Further, various recent technological advancement in microsampling devices has been discussed correlating their clinical applications.
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21
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Hall JM, Fowler CF, Pollock MA, MacRury SM. Haemoglobin A1c determination from dried blood spots prepared with HemaSpot™ blood collection devices: comparison with fresh capillary blood. Clin Chem Lab Med 2020; 59:e79-e82. [PMID: 32990645 DOI: 10.1515/cclm-2020-0675] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 09/01/2020] [Indexed: 11/15/2022]
Affiliation(s)
- Jenny M Hall
- Rural Health and Wellbeing, University of the Highlands and Islands, Centre for Health Science, Inverness, IV2 3JH, Scotland, UK
| | - Claire F Fowler
- Department of Biochemistry, Blood Sciences, Raigmore Hospital, Inverness, IV2 3UJ, Scotland, UK
| | - M Anne Pollock
- Department of Biochemistry, Blood Sciences, Raigmore Hospital, Inverness, IV2 3UJ, Scotland, UK
| | - Sandra M MacRury
- Institute of Health Research and Innovation, University of the Highlands and Islands, Centre for Health Science, Inverness, IV2 3JH, Scotland, UK
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22
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Hall JM, Fowler CF, Barrett F, Humphry RW, MacRury SM. Reply to Verougstraete et al. Comment on HbA 1c determination from HemaSpot blood collection devices: comparison of home-prepared dried blood spots with standard venous blood analysis. Diabet Med 2020; 37:1614-1615. [PMID: 32181897 DOI: 10.1111/dme.14296] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/13/2020] [Indexed: 11/28/2022]
Affiliation(s)
- J M Hall
- Division of Rural Health and Wellbeing, Institute of Health Research and Innovation, University of the Highlands and Islands, Centre for Health Science, Inverness, UK
| | - C F Fowler
- Department of Biochemistry, Blood Sciences, Raigmore Hospital, Inverness, UK
| | - F Barrett
- Highland Clinical Research Facility, NHS Highland, Centre for Health Science, Inverness, UK
| | - R W Humphry
- Epidemiology Research Unit, Scotland's Rural College, An Lòchran, Inverness Campus, Inverness, UK
| | - S M MacRury
- Institute of Health Research and Innovation, University of the Highlands and Islands, Centre for Health Science, Inverness, UK
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23
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Hall JM, Fowler CF, Barrett F, Humphry RW, Van Drimmelen M, MacRury SM. HbA 1c determination from HemaSpot™ blood collection devices: comparison of home prepared dried blood spots with standard venous blood analysis. Diabet Med 2020; 37:1463-1470. [PMID: 31418916 PMCID: PMC7496699 DOI: 10.1111/dme.14110] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/13/2019] [Indexed: 11/29/2022]
Abstract
AIM To assess the clinical performance and patient acceptance of HemaSpot™ blood collection devices as an alternative blood collection method. METHODS Adult men and women with any type of diabetes, routinely carrying out self-monitoring of blood glucose were recruited (n = 128). Participants provided a venous blood sample and prepared two HemaSpot dried blood spots, one at clinics and one at home. HbA1c analysis was by Tosoh G8 high-performance liquid chromatography. Participants also completed a questionnaire. RESULTS Strong linear relationships been HbA1c levels in dried blood spots and venous blood were observed and a linear model was fitted to the data. Time between dried blood spot preparation and testing did not impact the model. Participants were accepting of the approach: 69.2% would use this system if available and 60.7% would be more likely to use this system than going to their general practitioner. CONCLUSIONS The combination of a robust desiccating dried blood spot device, home sample preparation and return by post produces HbA1c data that support the use of a time-independent linear calibration of dried blood spot to venous blood HbA1c . A robust remote sample collection service would be valuable to people living with diabetes in urban areas who are working or house-bound as well as those living in remote or rural locations.
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Affiliation(s)
- J. M. Hall
- Division of Rural Health and WellbeingInstitute of Health Research and InnovationUniversity of the Highlands and IslandsCentre for Health ScienceInvernessUK
| | - C. F. Fowler
- Department of BiochemistryBlood Sciences, Raigmore HospitalInvernessUK
| | - F. Barrett
- Highland Clinical Research FacilityNHS HighlandCentre for Health ScienceOld Edinburgh RoadInvernessUK
| | - R. W. Humphry
- Epidemiology Research UnitScotland's Rural CollegeAn Lòchran, Inverness CampusInvernessUK
| | - M. Van Drimmelen
- Department of BiochemistryBlood Sciences, Raigmore HospitalInvernessUK
| | - S. M. MacRury
- Institute of Health Research and InnovationUniversity of the Highlands and IslandsCentre for Health ScienceInvernessUK
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24
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Verougstraete N, Stove V, Stove C. Comment on HbA 1c determination from HemaSpot blood collection devices: comparison of home-prepared dried blood spots with standard venous blood analysis. Diabet Med 2020; 37:1613-1614. [PMID: 31811656 DOI: 10.1111/dme.14200] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/04/2019] [Indexed: 11/30/2022]
Affiliation(s)
- N Verougstraete
- Department of Laboratory Medicine, Ghent University Hospital, Ghent, Belgium
| | - V Stove
- Department of Laboratory Medicine, Ghent University Hospital, Ghent, Belgium
| | - C Stove
- Laboratory of Toxicology, Faculty of Pharmaceutical Sciences, Ghent University, Ghent, Belgium
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25
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Wake DJ, Gibb FW, Kar P, Kennon B, Klonoff DC, Rayman G, Rutter MK, Sainsbury C, Semple RK. ENDOCRINOLOGY IN THE TIME OF COVID-19: Remodelling diabetes services and emerging innovation. Eur J Endocrinol 2020; 183:G67-G77. [PMID: 32508313 PMCID: PMC7938018 DOI: 10.1530/eje-20-0377] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 06/05/2020] [Indexed: 01/08/2023]
Abstract
The COVID-19 pandemic is a major international emergency leading to unprecedented medical, economic and societal challenges. Countries around the globe are facing challenges with diabetes care and are similarly adapting care delivery, with local cultural nuances. People with diabetes suffer disproportionately from acute COVID-19 with higher rates of serious complications and death. In-patient services need specialist support to appropriately manage glycaemia in people with known and undiagnosed diabetes presenting with COVID-19. Due to the restrictions imposed by the pandemic, people with diabetes may suffer longer-term harm caused by inadequate clinical support and less frequent monitoring of their condition and diabetes-related complications. Outpatient management need to be reorganised to maintain remote advice and support services, focusing on proactive care for the highest risk, and using telehealth and digital services for consultations, self-management and remote monitoring, where appropriate. Stratification of patients for face-to-face or remote follow-up should be based on a balanced risk assessment. Public health and national organisations have generally responded rapidly with guidance on care management, but the pandemic has created a tension around prioritisation of communicable vs non-communicable disease. Resulting challenges in clinical decision-making are compounded by a reduced clinical workforce. For many years, increasing diabetes mellitus incidence has been mirrored by rising preventable morbidity and mortality due to complications, yet innovation in service delivery has been slow. While the current focus is on limiting the terrible harm caused by the pandemic, it is possible that a positive lasting legacy of COVID-19 might include accelerated innovation in chronic disease management.
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Affiliation(s)
- Deborah J Wake
- Usher Institute, University of Edinburgh, Edinburgh, UK
- Edinburgh Centre for Endocrinology & Diabetes, NHS Lothian,
Edinburgh, UK
- Correspondence should be addressed to D Wake;
| | - Fraser W Gibb
- Edinburgh Centre for Endocrinology & Diabetes, NHS Lothian,
Edinburgh, UK
| | - Partha Kar
- Portsmouth Hospital NHS Trust, Portsmouth, UK
| | | | | | - Gerry Rayman
- Ipswich Hospital, East Suffolk and North East Essex NHS Trust,
Colchester, UK
- University of East Anglia, Norwich, UK
| | - Martin K Rutter
- Division of Diabetes, Endocrinology and Gastroenterology, School of Medical
Sciences, University of Manchester, Manchester, UK
- Manchester Diabetes Centre, Manchester University NHS Foundation Trust,
Manchester Academic Health Sciences Centre, Manchester, UK
| | - Chris Sainsbury
- NHS Greater Glasgow and Clyde, Glasgow, UK
- Institute of Applied Health Research, University of Birmingham,
Birmingham, UK
| | - Robert K Semple
- Edinburgh Centre for Endocrinology & Diabetes, NHS Lothian,
Edinburgh, UK
- Centre for Cardiovascular Sciences, The Queens Medical Research Institute,
University of Edinburgh, Edinburgh, UK
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26
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Ho C, Ng NBH, Lee YS. Caring for Pediatric Patients with Diabetes amidst the Coronavirus Disease 2019 Storm. J Pediatr 2020; 223:186-187. [PMID: 32387113 PMCID: PMC7199676 DOI: 10.1016/j.jpeds.2020.04.067] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 04/28/2020] [Accepted: 04/28/2020] [Indexed: 12/24/2022]
Affiliation(s)
- Cindy Ho
- Khoo Teck Puat-National University Children's Medical Institute, National University Health System, Singapore; Department of Pediatrics, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.
| | - Nicholas Beng Hui Ng
- Khoo Teck Puat-National University Children's Medical Institute, National University Health System, Singapore; Department of Pediatrics, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Yung Seng Lee
- Khoo Teck Puat-National University Children's Medical Institute, National University Health System, Singapore; Department of Pediatrics, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
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