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Pawlak K, Kruszyna Ł, Miecznikowska M, Karaźniewicz-Łada M. Application of a Novel UPLC-MS/MS Method for Analysis of Rivaroxaban Concentrations in Dried Blood Spot and Plasma Samples Collected from Patients with Venous Thrombosis. Molecules 2024; 29:4140. [PMID: 39274988 PMCID: PMC11397208 DOI: 10.3390/molecules29174140] [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: 08/12/2024] [Revised: 08/24/2024] [Accepted: 08/28/2024] [Indexed: 09/16/2024] Open
Abstract
Despite a higher safety profile compared to vitamin K antagonists, rivaroxaban therapy is still connected with multiple adverse effects, such as a high risk of bleeding. Thus, therapeutic drug monitoring (TDM) of rivaroxaban concentrations is suggested. An alternative to plasma samples can be dried blood spots (DBS), which minimize the cost of sample storage and transport. In this study, we developed a UPLC-MS/MS method for the analysis of rivaroxaban in DBS and plasma samples. Chromatographic separation was achieved on a Zorbax Eclipse Plus C18 column (2.1 × 100 mm; 3.5 µm, Agilent Technologies Inc., Santa Clara, CA, USA) with a mobile phase consisting of water and acetonitrile, both containing 0.1% formic acid. The analytes were detected using a positive ionization mode by multiple reaction monitoring. We validated the method according to ICH guidelines. The precision and accuracy were satisfactory. Extraction recovery was approximately 57% and 66% for DBS and plasma samples, respectively. A high correlation between rivaroxaban concentrations in plasma and DBS samples collected from patients was confirmed with Deming regression. The suitability of both sampling techniques for the rivaroxaban TDM was also verified by Bland-Altman plots based on DBS-predicted and observed plasma concentrations. In addition, we found a significant relationship between rivaroxaban concentrations and coagulation parameters, including prothrombin time (PT) and international normalized ratio (INR).
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Affiliation(s)
- Kornel Pawlak
- Department of Physical Pharmacy & Pharmacokinetics, Poznan University of Medical Sciences, Rokietnicka 3, 60-806 Poznan, Poland
- Doctoral School, Poznan University of Medical Sciences, 60-812 Poznan, Poland
| | - Łukasz Kruszyna
- Department of Vascular & Endovascular Surgery, Angiology and Phlebology, Poznan University of Medical Sciences, Dluga St 1/2., 61-848 Poznan, Poland
| | - Marta Miecznikowska
- Department of Physical Pharmacy & Pharmacokinetics, Poznan University of Medical Sciences, Rokietnicka 3, 60-806 Poznan, Poland
| | - Marta Karaźniewicz-Łada
- Department of Physical Pharmacy & Pharmacokinetics, Poznan University of Medical Sciences, Rokietnicka 3, 60-806 Poznan, Poland
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Galletto M, Ververi C, Massano M, Alladio E, Vincenti M, Salomone A. Development and validation of the UHPLC-MS/MS method for the quantitative determination of 25 PFAS in dried blood spots. Anal Bioanal Chem 2024:10.1007/s00216-024-05484-6. [PMID: 39160438 DOI: 10.1007/s00216-024-05484-6] [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: 05/21/2024] [Revised: 08/01/2024] [Accepted: 08/07/2024] [Indexed: 08/21/2024]
Abstract
Per- and polyfluoroalkyl substances (PFAS) are anthropogenic fluorine-containing compounds largely used in industrial and consumer applications. They tend to bioaccumulate in the human body after intake from various sources in daily life. Following repeated exposure to PFAS, a broad range of adverse health outcomes has been reported. Consequently, monitoring PFAS levels in human blood is of paramount importance for public health policies. In contrast with traditional venipuncture, dried blood spots (DBS) constitute a reliable, cheap, and less invasive technique to allow microsampling by capillary blood collected on a specific device. This work aimed to develop and validate an innovative analytical method, combining quantitative DBS with UHPLC-MS/MS instrumentation to identify and quantify 25 PFAS. The extraction procedure was developed and optimized within the range 2-100 ng/mL. Specifically, fortified blood was applied on Capitainer®B devices providing 10 μL of blood volume through a microfluidic channel. After 3 h of drying, the extraction was performed by methanol under sonication, followed by centrifugation. Then, the extraction solvent was evaporated; the residue was reconstituted with the mobile phase solution. The validated method evidenced good sensitivity, with limits of detection ranging from 0.4 ng/mL (PFODA, PFOS) to 1.0 ng/mL (PFOA, 3,6-OPFHpA). The ± 20% acceptability criteria established for intra- and inter-day precision and accuracy were fulfilled for all analytes. High recovery-above 80%-was recorded, whereas significant matrix effect resulted in ion enhancement (> 50%) for 13 analytes. In conclusion, the proposed workflow proved to be reliable, fit for purpose, and easily adaptable in the laboratory routine.
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Affiliation(s)
| | | | - Marta Massano
- Department of Chemistry, University of Turin, Turin, Italy
| | | | - Marco Vincenti
- Department of Chemistry, University of Turin, Turin, Italy
- Centro Regionale Antidoping, Orbassano, TO, Italy
| | - Alberto Salomone
- Department of Chemistry, University of Turin, Turin, Italy
- Centro Regionale Antidoping, Orbassano, TO, Italy
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Jin Y, Zhang M, Li XL, Han C, Shi Q, Min JZ. A dried sweat spot paper (DSSP) method based on novel mass spectrometry probe labeling for detection and resolution of DL-lactate enantiomers as potential biomarkers for diabetes mellitus. Anal Chim Acta 2024; 1317:342914. [PMID: 39030012 DOI: 10.1016/j.aca.2024.342914] [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: 03/21/2024] [Revised: 06/24/2024] [Accepted: 06/25/2024] [Indexed: 07/21/2024]
Abstract
BACKGROUND Human sweat can be collected non-invasively with low infectivity; however, its application as a determination method has been challenged due to the presence of trace amounts of chiral metabolites. Moreover, its application as a biological fluid for disease diagnosis has not been previously reported. In this study, the human dried sweat spot paper (DSSP) method was proposed for the derivatization of a novel mass spectrometric chiral probe, N-[1-Oxo-5-(triphenylphosphonium) pentyl]-(S)-3-aminopyrrolidine (OTPA), determination and resolution of DL-lactic acid (DL-LA) enantiomers in human elbow sweat. RESULTS The methodological validation revealed the resolution (Rs) as 1.78, the limit of detection (S/N = 3) as 20.83 fmol, good linearity (R2 ≥ 0.9996), and the intra-day and intra-day stability with RSD ranging from 0.53 to 10.85 %, while the average recovery rate of D-LA and L-LA were 104.00 % ± 4.68 % and 107.41 % ± 8.34 %, respectively, with high accuracy. In addition, the method was applied for the determination of DL-LA in the sweat on elbow of 10 healthy volunteers and 30 diabetic patients. The results demonstrated that the D/L ratio and L/D ratio were significantly different (p < 0.0001). In addition, a moderate positive linear correlation between the D/L-LA ratio in human sweat and fasting blood glucose level (r = 0.7744, p < 0.0001) was observed, thereby suggesting that the D/L ratio of lactate in human sweat correlate the glucose level in human fasting blood. SIGNIFICANCE AND NOVELTY The D/L lactate ratio in human sweat could be used as a potential biomarker for diabetes screening. The method can be used to screen for diabetes by providing a dry sweat paper to test equipment and has the potential to be a non-invasive early-warning diagnostic tool for diabetes.
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Affiliation(s)
- Yueying Jin
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy Yanbian University, Department of Pharmacy, Yanbian University Hospital, Yanji, 133002, Jilin Province, China
| | - Minghui Zhang
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy Yanbian University, Department of Pharmacy, Yanbian University Hospital, Yanji, 133002, Jilin Province, China
| | - Xi-Ling Li
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy Yanbian University, Department of Pharmacy, Yanbian University Hospital, Yanji, 133002, Jilin Province, China
| | - Chengqiang Han
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy Yanbian University, Department of Pharmacy, Yanbian University Hospital, Yanji, 133002, Jilin Province, China
| | - Qing Shi
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy Yanbian University, Department of Pharmacy, Yanbian University Hospital, Yanji, 133002, Jilin Province, China.
| | - Jun Zhe Min
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy Yanbian University, Department of Pharmacy, Yanbian University Hospital, Yanji, 133002, Jilin Province, China.
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He Z, Dai H, Shen J, Huang Y, Liu J, Yan R, Zhang F, Yan S. Development and evaluation of a candidate reference measurement procedure for detecting 17α-hydroxyprogesterone in dried blood spots using isotope dilution liquid chromatography tandem mass spectrometry. Anal Bioanal Chem 2024; 416:4635-4645. [PMID: 38949681 PMCID: PMC11294408 DOI: 10.1007/s00216-024-05411-9] [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: 04/25/2024] [Revised: 06/12/2024] [Accepted: 06/17/2024] [Indexed: 07/02/2024]
Abstract
17α-Hydroxyprogesterone (17α-OHP) quantification in dried blood spots (DBS) is essential for newborn screening for congenital adrenal hyperplasia (CAH), which is challenging due to its low physiological concentration. The high false-positive rates of immunoassays necessitate the development of more accurate methods. Liquid chromatography tandem mass spectrometry (LC-MS/MS) offers increased specificity and sensitivity, yet standardized procedures for 17α-OHP measurement are required for clinical application. A candidate reference measurement procedure (cRMP) using isotope dilution LC-MS/MS was developed for 17α-OHP quantification in DBS. By utilizing stable isotope-labeled D8-17α-OHP as an internal standard, the cRMP was optimized, covering sample preparation, calibration, and LC-MS/MS analysis. The method performance was validated across several parameters, including precision, accuracy, specificity, detection limits, and matrix effects. Clinical applicability was further assessed through the establishment of reference intervals for healthy newborns. The developed cRMP exhibited a linear range of 1.00 to 80.00 ng/mL for 17α-OHP, with detection and quantification limits of 0.14 ng/mL and 0.52 ng/mL, respectively. Inter- and intraday precision demonstrated coefficients of variation within 1.27 to 5.69%. The recovery rates and matrix effects were well within acceptable limits, ensuring method reliability. Clinical application showed distinct reference intervals for healthy newborns that were unaffected by sex but influenced by weight and gestational age. This method significantly enhances CAH diagnostic accuracy in newborns, providing a valuable tool for clinical laboratories and improving newborn screening program standardization and traceability.
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Affiliation(s)
- Ziyun He
- Department of Laboratory Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, 563003, China
- College of Laboratory Medicine, Zunyi Medical University, Zunyi, 563000, China
| | - Haibing Dai
- Department of Laboratory Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, 563003, China
- College of Laboratory Medicine, Zunyi Medical University, Zunyi, 563000, China
| | - Jian Shen
- Guangzhou Fenghua Biotech Co., Ltd., Guangzhou, 510730, China
| | - Yanjie Huang
- Guangdong Provincial Institute of Metrology, South China National Centre of Metrology, Guangzhou, 510405, China
| | - Jinsong Liu
- Department of Laboratory Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, 563003, China
- College of Laboratory Medicine, Zunyi Medical University, Zunyi, 563000, China
| | - Renqing Yan
- Department of Laboratory Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, 563003, China
- College of Laboratory Medicine, Zunyi Medical University, Zunyi, 563000, China
| | - Feng Zhang
- Department of Laboratory Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, 563003, China
- College of Laboratory Medicine, Zunyi Medical University, Zunyi, 563000, China
| | - Shengkai Yan
- Department of Laboratory Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, 563003, China.
- College of Laboratory Medicine, Zunyi Medical University, Zunyi, 563000, China.
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Oprea OR, Barabas AZ, Manescu IB, Dobreanu M. A Mathematical Algorithm for Dried Blood Spot Quality Assessment and Results concerning Quality from a Newborn Screening Program. J Appl Lab Med 2024; 9:512-525. [PMID: 38384160 DOI: 10.1093/jalm/jfae003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 12/11/2023] [Indexed: 02/23/2024]
Abstract
BACKGROUND In addition to newborn screening, dried blood spots (DBSs) are used for a wide variety of analytes for clinical, epidemiological, and research purposes. Guidelines on DBS collection, storage, and transport are available, but it is suggested that each laboratory should establish its own acceptance criteria. METHODS An optical scanning device was developed to assess the quality of DBSs received in the newborn screening laboratory from 11 maternity wards between 2013 and 2018. The algorithm was adjusted to agree with the visual examination consensus of experienced laboratory personnel. Once validated, the algorithm was used to categorize DBS specimens as either proper or improper. Improper DBS specimens were further divided based on 4 types of specimen defects. RESULTS In total, 27 301 DBSs were analyzed. Compared with an annual DBS rejection rate of about 1%, automated scanning rejected 26.96% of the specimens as having at least one defect. The most common specimen defect was multi-spotting (ragged DBS, 19.13%). Among maternity wards, improper specimen rates varied greatly between 5.70% and 49.92%. CONCLUSIONS Improper specimen rates, as well as the dominant type of defect(s), are mainly institution-dependent, with various maternity wards consistently showing specific patterns of both parameters over time. Although validated in agreement with experienced laboratory personnel consensus, automated analysis rejects significantly more specimens. While continuous staff training, specimen quality monitoring, and problem-reporting to maternities is recommended, a thorough quality assessment strategy should also be implemented by every newborn screening laboratory. An important role in this regard may be played by automation in the form of optical scanning devices.
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Affiliation(s)
- Oana R Oprea
- Department of Clinical Biochemistry and Immunology, "George Emil Palade" University of Medicine, Pharmacy, Science, and Technology, Targu Mures, Romania
| | - Albert Z Barabas
- Department of Electrical Engineering and Informatics, "George Emil Palade" University of Medicine, Pharmacy, Science, and Technology, Targu Mures, Romania
| | - Ion B Manescu
- Department of Clinical Biochemistry and Immunology, "George Emil Palade" University of Medicine, Pharmacy, Science, and Technology, Targu Mures, Romania
| | - Minodora Dobreanu
- Department of Clinical Biochemistry and Immunology, "George Emil Palade" University of Medicine, Pharmacy, Science, and Technology, Targu Mures, Romania
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Reubsaet L, Halvorsen TG. Advancements in clinical approaches, analytical methods, and smart sampling for LC-MS-based protein determination from dried matrix spots. J Sep Sci 2024; 47:e2400061. [PMID: 38726749 DOI: 10.1002/jssc.202400061] [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: 01/23/2024] [Revised: 03/20/2024] [Accepted: 03/22/2024] [Indexed: 08/24/2024]
Abstract
Determination of proteins from dried matrix spots using MS is an expanding research area. Mainly, the collected dried matrix sample is whole blood from a finger or heal prick, resulting in dried blood spots. However as other matrices such as plasma, serum, urine, and tear fluid also can be collected in this way, the term dried matrix spot is used as an overarching term. In this review, the focus is on advancements in the field made from 2017 up to 2023. In the first part reviews concerning the subject are discussed. After this, advancements made for clinical purposes are highlighted. Both targeted protein analyses, with and without the use of affinity extractions, as well as untargeted, global proteomic approaches are discussed. In the last part, both methodological advancements are being reviewed as well as the possibility to integrate sample preparation steps during the sample handling. The focus, of this so-called smart sampling, is on the incorporation of cell separation, proteolysis, and antibody-based affinity capture.
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Affiliation(s)
- Léon Reubsaet
- Section of Pharmaceutical Chemistry, Department of Pharmacy, University of Oslo, Oslo, Norway
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Naseri S, Avrutsky MI, Capati C, Desai K, Alvero R, Blumenthal PD. Concordance of hemoglobin A1c and reproductive hormone levels in menstrual and venous blood. F S Rep 2024; 5:33-39. [PMID: 38524214 PMCID: PMC10958681 DOI: 10.1016/j.xfre.2023.11.009] [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: 05/31/2023] [Revised: 11/03/2023] [Accepted: 11/17/2023] [Indexed: 03/26/2024] Open
Abstract
Objective To explore whether menstrual blood collected via a modified menstrual pad is a surrogate for venous blood drawn in analyzing hemoglobin A1c (HbA1c) and fertility-associated hormones. Design Cross-sectional study. Setting Clinical testing laboratory. Patients This study included 152 female participants who have regular menses, aged 19-50 years old. Interventions Participants collected menstrual effluent using a menstrual pad modified with a removable dried blood spot (DBS) strip. Peripheral blood samples were collected via venipuncture within 60 hours of menstrual pad use. Main Outcome Measures Menstrual pad and venous blood drawn samples were analyzed for levels of HbA1c, thyroid stimulating hormone (TSH), follicle-stimulating hormone (FSH), anti-müllerian hormone (AMH), and luteinizing hormone (LH). Correlation between menstrual pad and venipuncture samples was performed using Deming linear regression, and r coefficients were measured using Pearson correlation. Results The interassay variability of menstrual pad DBS sample measurements was <6%. Menstrual HbA1c values were stabilized in the DBS strips through 53 days, and menstrual hormone levels remained stable through 15 days. Menstrual HbA1c levels were highly correlated with venipuncture samples (r = 0.96). The levels of TSH (r = 0.94), AMH (r = 0.94), FSH (r = 0.91), and LH (r = 0.91) also showed a high correlation between menstrual strip and venipuncture samples. Conclusions The levels of HbA1c, TSH, AMH, FSH, and LH measurements in menstrual effluent showed a high correlation to venous blood samples, supporting the use of menstrual effluent as a surrogate sample for hormone testing.
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Affiliation(s)
| | | | | | | | - Ruben Alvero
- Fertility and Reproductive Health, Lucille Packard Children's Hospital, Sunnyvale, California
- Department of Obstetrics and Gynecology, Stanford University School of Medicine, Stanford, California
| | - Paul D. Blumenthal
- Department of Obstetrics and Gynecology, Stanford University, Stanford, California
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Gjerde H, Oyono Y, Jamt REG, Tayimetha CY, Asongalem EA, Akum EA, Øiestad EL. Drug analysis: Comparison between dried plasma spots and liquid plasma samples of trauma patients from Cameroon-A feasibility study. Drug Test Anal 2024; 16:303-308. [PMID: 37464568 DOI: 10.1002/dta.3545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 06/29/2023] [Accepted: 07/03/2023] [Indexed: 07/20/2023]
Affiliation(s)
- Hallvard Gjerde
- Department of Forensic Sciences, Oslo University Hospital, Oslo, Norway
| | - Yannick Oyono
- Faculty of Health Sciences, University of Buea, Buea, Cameroon
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Petrick LM, Niedzwiecki MM, Dolios G, Guan H, Tu P, Wright RO, Wright RJ. Effects of storage temperature and time on metabolite profiles measured in dried blood spots, dried blood microsamplers, and plasma. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:169383. [PMID: 38101622 PMCID: PMC10842436 DOI: 10.1016/j.scitotenv.2023.169383] [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: 07/21/2023] [Revised: 12/06/2023] [Accepted: 12/12/2023] [Indexed: 12/17/2023]
Abstract
The practical advantages of capillary whole blood collection over venipuncture plasma collection for human exposome research are well known. However, before epidemiologists, clinicians, and public health researchers employ these microvolume sample collections, a rigorous evaluation of pre-analytical storage conditions is needed to develop protocols that maximize sample stability and reliability over time. Therefore, we performed a controlled experiment of dried whole blood collected on 10 μL Mitra microsamplers (DBM), 5-mm punches of whole blood from a dried blood spot (DBS), and 10 μL of plasma, and evaluated the effects of storage conditions at 4 °C, -20 °C, or -80 °C for up to 6 months on the resulting metabolite profiles measured with untargeted liquid chromatography-high resolution mass spectrometry (LC-HRMS). At -80 °C storage conditions, metabolite profiles from DBS, DBM, and plasma showed similar stability. While DBS and DBM metabolite profiles remained similarly stable at -20 °C storage, plasma profiles showed decreased stability at -20 °C compared to -80 °C storage. At refrigerated temperatures (4 °C), metabolite profiles collected on DBM were more stable than plasma or DBS, particularly for lipid classes. These results inform robust capillary blood sample storage protocols for DBM and DBS at potentially warmer temperatures than -80 °C, which may facilitate blood collections for populations outside of a clinical setting.
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Affiliation(s)
- Lauren M Petrick
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA; The Institute for Exposomics Research, Icahn School of Medicine at Mount Sinai, New York, NY, USA; The Bert Strassburger Metabolic Center, Sheba Medical Center, Tel-Hashomer, Israel.
| | - Megan M Niedzwiecki
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA; The Institute for Exposomics Research, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Georgia Dolios
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Haibin Guan
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Peijun Tu
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Robert O Wright
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA; The Institute for Exposomics Research, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Rosalind J Wright
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA; The Institute for Exposomics Research, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Department of Pediatrics, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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Adkesson MJ, Shlosberg A, Lehner AF, Rumbeiha WK, Cárdenas-Alayza S, Cardeña-Mormontoy M, Kannan K. MEASUREMENT OF PERSISTENT ORGANIC POLLUTANTS, PERFLUORINATED COMPOUNDS, AND TOXIC METALS IN THE BLOOD OF HUMBOLDT PENGUINS (SPHENISCUS HUMBOLDTI) AT PUNTA SAN JUAN, PERU USING DRIED BLOOD SPOTS. J Zoo Wildl Med 2024; 54:713-720. [PMID: 38251994 DOI: 10.1638/2023-0047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/02/2023] [Indexed: 01/23/2024] Open
Abstract
The Humboldt penguin (Spheniscus humboldti) population at the Punta San Juan Marine Protected Area in Peru is considered critical to the long-term sustainability of this endangered species in Peru. Exposure of the rookery to environmental toxicants is a mounting concern because of regional growth of industries and human populations. Whole blood samples were collected from 30 free-ranging penguins in 2011 as part of a broader population health monitoring program. Dried blood spots (DBS) containing 50 µl of blood were prepared and analyzed to assess exposure to five groups of environmental contaminants. Concentrations of elements arsenic, cadmium, iron, lead, mercury, selenium, and thallium were analyzed using inductively coupled plasma mass spectrometry. Persistent organic pollutant concentrations were measured using gas chromatography-tandem mass spectrometry to analyze organochlorine pesticides (OCP; p,p'-DDT, p,p'-DDE, β-hexachlorocyclohexane, t-nonachlor, and oxychlordane), polychlorinated biphenyls (congeners 138 and 153), and polybrominated flame retardants (polybrominated biphenyl-153 and polybrominated diphenyl ether congeners 47 and 99). Per- and polyfluoroalkyl substances, including perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid were measured using liquid chromatography-tandem mass spectrometry. Results revealed low levels of exposure to these selected contaminants, at levels not considered to be of concern for wildlife health. DBS methodology was considered effective in a field-based setting for quantification of whole blood concentrations of environmental contaminants in penguins.
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Affiliation(s)
| | | | - Andreas F Lehner
- Veterinary Diagnostic Laboratory, Michigan State University, Lansing, MI 48910-8104, USA
| | - Wilson K Rumbeiha
- School of Veterinary Medicine, University of California, Davis, CA 95616, USA
| | - Susana Cárdenas-Alayza
- Punta San Juan Program, Center for Environmental Sustainability, Cayetano Heredia University, Lima 4314, Peru
| | - Marco Cardeña-Mormontoy
- Punta San Juan Program, Center for Environmental Sustainability, Cayetano Heredia University, Lima 4314, Peru
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Collier BB, Brandon WC, Chappell MR, Kovach PM, Grant RP. Maximizing Microsampling: Measurement of Comprehensive Metabolic and Lipid Panels Using a Novel Capillary Blood Collection Device. J Appl Lab Med 2023; 8:1115-1126. [PMID: 37748757 DOI: 10.1093/jalm/jfad066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 08/08/2023] [Indexed: 09/27/2023]
Abstract
BACKGROUND Demand continues to grow for patient-centric sampling solutions that enable collection of small volumes of blood outside of healthcare facilities. Various technologies have been developed to facilitate sample collection but gaps in knowledge remain, preventing these technologies from replacing standard venipuncture. METHODS A novel blood collection device, Touch Activated Phlebotomy (TAP) II® from YourBio Health, and standard fingerstick collection using a BD Microtainer® were utilized to collect capillary serum samples. Measurements of a comprehensive metabolic and lipid panels were measured on these samples and compared to results from venous serum samples that were collected in parallel. Hemolysis was used to assess sample quality. Sample volumes obtained from self-collected TAP II samples were also determined. RESULTS Correlation of capillary serum with respect to venous serum was demonstrated (R > 0.9) for professionally collected TAP II samples, self-collected TAP II samples, and professionally collected fingerstick samples for alkaline phosphatase, alanine aminotransferase, aspartate aminotransferase, blood urea nitrogen, cholesterol, high-density lipoprotein, total bilirubin, and triglycerides. Results for creatinine demonstrated acceptable correlation, however, a consistent negative bias was observed. Biases (with unacceptable correlations) were also observed for measurements of carbon dioxide and potassium. Correlative results for albumin were not consistently acceptable across the collection techniques utilized while the remaining analytes tested did not demonstrate acceptable correlations under any condition. Correlation results, however, would improve with a wider distribution of analyte concentrations. CONCLUSIONS Collections of small volumes of liquid blood continue to show potential as a patient-centric solution.
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Affiliation(s)
| | | | | | - Peyton M Kovach
- Center for Esoteric Testing, Labcorp, Burlington, NC, United States
| | - Russell P Grant
- Center for Esoteric Testing, Labcorp, Burlington, NC, United States
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Iacovetti G, Collier B, Setzer S, Peevler M, Ragar J, Hong K, Pan T, Brandon W, Chappell M, Grant RP, Sommer GJ, Schaff UY. Evaluation of a Compact, Portable Centrifuge for Separating Microvolume Blood Samples at the Point of Collection. J Appl Lab Med 2023; 8:1042-1053. [PMID: 37748720 DOI: 10.1093/jalm/jfad071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 07/31/2023] [Indexed: 09/27/2023]
Abstract
BACKGROUND The increased demand for decentralized blood sample collection presents numerous operational challenges for diagnostics providers. Sample degradation including sample hemolysis due to time, temperature, and handling between collection and laboratory analysis leads to limited test menus and unreliable results. Here we introduce the lightweight, portable Labcorp TrueSpin™ for rapid point-of-care blood separation using commercially available microvolume blood collection tubes. The TrueSpin is a class I FDA-registered device designed for untrained users. The centrifuge runs on AA batteries and separates a blood sample in 5 minutes. METHODS Here we describe a series of studies evaluating sample quality and analyte stability in serum samples collected into gel microtubes and processed using the TrueSpin. Hemolysis, residual red blood cell concentration, sample volume, and serum-based chemistry analyte stability were evaluated. RESULTS No significant difference was seen in hemolysis or residual red blood cell concentration in serum samples prepared by TrueSpin compared to the reference method. Additionally, capillary and venous blood samples separated using the TrueSpin and exposed to International Safe Transit Association 3A-simulated shipping conditions were shown to yield acceptable sample volume and quality for laboratory analysis. Finally, we show that many common serum-based chemistry analytes have limited (< 1 day) stability if uncentrifuged but improve to ≥ 3-day stability following TrueSpin separation and refrigerated or room temperature storage. CONCLUSIONS These findings suggest that the TrueSpin is a simple and effective solution for remote sample separation and may enable broader test menus and increased test result reliability for decentralized sample collection pursuits.
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Affiliation(s)
- Gabriella Iacovetti
- Diagnostic Devices Research and Development, Laboratory Corporation of America Holdings, Pleasanton, CA, United States
| | - Brad Collier
- Center for Esoteric Testing, Laboratory Corporation of America Holdings, Burlington, NC, United States
| | - Shannon Setzer
- Diagnostic Devices Research and Development, Laboratory Corporation of America Holdings, Pleasanton, CA, United States
| | - Mitchell Peevler
- Diagnostic Devices Research and Development, Laboratory Corporation of America Holdings, Pleasanton, CA, United States
| | - Jason Ragar
- Diagnostic Devices Research and Development, Laboratory Corporation of America Holdings, Pleasanton, CA, United States
| | - Kyungjin Hong
- Diagnostic Devices Research and Development, Laboratory Corporation of America Holdings, Pleasanton, CA, United States
| | - Tifany Pan
- Diagnostic Devices Research and Development, Laboratory Corporation of America Holdings, Pleasanton, CA, United States
| | - Whitney Brandon
- Center for Esoteric Testing, Laboratory Corporation of America Holdings, Burlington, NC, United States
| | - Mathew Chappell
- Center for Esoteric Testing, Laboratory Corporation of America Holdings, Burlington, NC, United States
| | - Russell P Grant
- Center for Esoteric Testing, Laboratory Corporation of America Holdings, Burlington, NC, United States
| | - Greg J Sommer
- Diagnostic Devices Research and Development, Laboratory Corporation of America Holdings, Pleasanton, CA, United States
| | - Ulrich Y Schaff
- Diagnostic Devices Research and Development, Laboratory Corporation of America Holdings, Pleasanton, CA, United States
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13
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Yang Q, Song J, Deng Z, Shi C, Li S, Zhuang G, Hao H, Cai Y. Discrimination of blood metabolomics profiles in neonates with idiopathic polyhydramnios. Eur J Pediatr 2023; 182:5015-5024. [PMID: 37644170 DOI: 10.1007/s00431-023-05171-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 08/12/2023] [Accepted: 08/19/2023] [Indexed: 08/31/2023]
Abstract
This study aimed to compare the blood metabolic status of neonates with idiopathic polyhydramnios (IPH) and those with normal amniotic fluid, and to explore the relationship between IPH and fetal health. Blood metabolites of 32 patients with IPH and 32 normal controls admitted to the Sixth Affiliated Hospital of Sun Yat-sen University between January 2017 and December 2022 were analyzed using liquid chromatography-mass spectrometry (LC-MS/MS). Orthogonal partial least squares discriminant analysis (OPLS-DA) and metabolite enrichment analyses were performed to identify the differential metabolites and metabolic pathways. There was a significant difference in the blood metabolism between newborns with IPH and those with normal amniotic fluid. Six discriminant metabolites were identified: glutamate, serine, asparagine, aspartic acid, homocysteine, and phenylalanine. Differential metabolites were mainly enriched in two pathways: aminoacyl-tRNA biosynthesis, and alanine, aspartate, and glutamate metabolism. CONCLUSIONS This study is the first to investigate metabolomic profiles in newborns with IPH and examine the correlation between IPH and fetal health. Differential metabolites and pathways may affect amino acid synthesis and the nervous system. Continuous attention to the development of the nervous system in children with IPH is necessary. WHAT IS KNOWN • There is an increased risk of adverse pregnancy outcomes with IPH, such as perinatal death, neonatal asphyxia, neonatal intensive care admission, cesarean section rates, and postpartum hemorrhage. • Children with a history of IPH have a higher proportion of defects than the general population, particularly central nervous system problems, neuromuscular disorders, and other malformations. WHAT IS NEW • In neonates with IPH, six differential metabolites were identified with significant differences and good AUC values using LC-MS/MS analysis: glutamic acid, serine, asparagine, aspartic acid, homocysteine, and phenylalanine, which were mainly enriched in two metabolic pathways: aminoacyl-tRNA biosynthesis and alanine, aspartate, and glutamate metabolism. • These differential metabolites and pathways may affect amino acid synthesis and development of the nervous system in neonates with IPH.
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Affiliation(s)
- Qiuping Yang
- Department of Pediatrics, The Sixth Affiliated Hospital, Sun Yat-sen University, 510655, Guangzhou, China
- Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University, 510530, Guangzhou, China
| | - Jie Song
- Department of Pediatrics, The Fifth Affiliated Hospital, Sun Yat-sen University, 519000, Zhuhai, China
| | - Zhirong Deng
- Department of Pediatrics, The Sixth Affiliated Hospital, Sun Yat-sen University, 510655, Guangzhou, China
- Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University, 510530, Guangzhou, China
| | - Congcong Shi
- Laboratory of Inborn Metabolism Errors, The Sixth Affiliated Hospital, Sun Yat-sen University, 510655, Guangzhou, China
| | - Sitao Li
- Department of Pediatrics, The Sixth Affiliated Hospital, Sun Yat-sen University, 510655, Guangzhou, China
- Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University, 510530, Guangzhou, China
| | - Guiying Zhuang
- Department of Neonatology, The Maternal and Child Health Care Hospital of Huadu, 510800, Guangzhou, China.
| | - Hu Hao
- Department of Pediatrics, The Sixth Affiliated Hospital, Sun Yat-sen University, 510655, Guangzhou, China.
- Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University, 510530, Guangzhou, China.
- Laboratory of Inborn Metabolism Errors, The Sixth Affiliated Hospital, Sun Yat-sen University, 510655, Guangzhou, China.
| | - Yao Cai
- Department of Pediatrics, The Sixth Affiliated Hospital, Sun Yat-sen University, 510655, Guangzhou, China.
- Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University, 510530, Guangzhou, China.
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14
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Li F, Cui H, Zhang D, Li H, Guo W, Jin L, Hu S. Direct multi-elemental analysis of cerebrospinal fluid samples by LA-ICP-MS employing an aerosol local extraction cryogenic ablation cell. Anal Bioanal Chem 2023; 415:6051-6061. [PMID: 37541973 DOI: 10.1007/s00216-023-04878-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 07/14/2023] [Accepted: 07/19/2023] [Indexed: 08/06/2023]
Abstract
A novel method for direct high-throughput analysis of multi-elements in cerebrospinal fluid (CSF) samples by laser ablation inductively coupled plasma mass spectrometry with an aerosol local extraction cryogenic ablation cell (ALEC-LA-ICP-MS) was developed. Microliter-level CSF samples were frozen by a designed cryogenic ablation cell and directly analyzed by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) without time-consuming pretreatment. Compared with the precision obtained at room temperature (20℃), that obtained at low temperature (- 25℃) was significantly improved; the RSDs were reduced from 8.3% (Zn) to 32.6% (Mn) to 2.2% (Pb) to 6.5% (Mn) with six times parallel determination. To meet the analytical requirement of the micro-volume CSF samples, the laminar flow aerosol local extraction strategy was adopted to improve the transmission efficiency of aerosols, and the signal intensity was increased by four times compared with the standard commercial ablation cell. The standard solution with 0.4% bovine serum albumin (BSA) matrix was used as matrix-match external standard, and Rh was added into the samples as internal standard. The limits of detection (LODs) ranged from 0.17 μg·L-1 (Mn) to 8.67 μg·L-1 (Mg). Standard addition recovery experiments and the determination of CRM serum L-1 and L-2 were carried out to validate the accuracy of the method; all results indicated there were excellent accuracy and precision in the proposed method. The matrix-scanning function in the GeoLas software combined with the microwell plate realizes the high-throughput automatic analysis. Twenty-four CSF samples from different patients were determined; the results showed that there might be a correlation between the metal elements in CSF and the diseases, which means that the proposed method has potential in the diagnosis of neurological diseases.
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Affiliation(s)
- Fan Li
- State Key Laboratory of Biogeology and Environmental Geology, School of Earth Sciences, China University of Geosciences, Wuhan, 430074, People's Republic of China
| | - Hua Cui
- Department of Clinical Laboratory, Renmin Hospital of Wuhan University, Wuhan, 430060, People's Republic of China
| | - Dingwen Zhang
- State Key Laboratory of Biogeology and Environmental Geology, School of Earth Sciences, China University of Geosciences, Wuhan, 430074, People's Republic of China
| | - Huilai Li
- State Key Laboratory of Biogeology and Environmental Geology, School of Earth Sciences, China University of Geosciences, Wuhan, 430074, People's Republic of China
| | - Wei Guo
- State Key Laboratory of Biogeology and Environmental Geology, School of Earth Sciences, China University of Geosciences, Wuhan, 430074, People's Republic of China
| | - Lanlan Jin
- State Key Laboratory of Biogeology and Environmental Geology, School of Earth Sciences, China University of Geosciences, Wuhan, 430074, People's Republic of China
| | - Shenghong Hu
- State Key Laboratory of Biogeology and Environmental Geology, School of Earth Sciences, China University of Geosciences, Wuhan, 430074, People's Republic of China.
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15
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Troyano-Hernáez P, Herrador P, Gea F, Romero-Hernández B, Reina G, Albillos A, Galán JC, Holguín Á. Impact of storage time in dried blood samples (DBS) and dried plasma samples (DPS) for point-of-care hepatitis C virus (HCV) RNA quantification and HCV core antigen detection. Microbiol Spectr 2023; 11:e0174823. [PMID: 37655908 PMCID: PMC10581200 DOI: 10.1128/spectrum.01748-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 07/03/2023] [Indexed: 09/02/2023] Open
Abstract
The scale-up of hepatitis C virus (HCV) diagnosis and treatment requires affordable and simple tools to improve access to care, especially in low- and middle-income settings with limited infrastructure or high-risk populations. Dried blood and plasma samples (DBS and DPS) are useful alternative for hepatitis C detection in settings lacking adequate infrastructure. We evaluated the performance of DBS and DPS vs plasma in a point-of-care HCV RNA quantitative assay (Xpert HCV Viral Load-Cepheid), and compared HCV core antigen (HCVcAg) detection by the Architect HCV core antigen assay (Abbott) in DBS vs serum. The dried samples were stored at room temperature for different storage times to reproduce the time from sampling to testing in settings with centralized diagnosis or when testing mobile populations. HCV RNA quantification in DBS and DPS presented 100% sensitivity and specificity and a high correlation for up to 3 months of storage. HCV viremia showed a mean decrease of 0.5 log10 IU/mL (DBS) and 0.3 log10 IU/mL (DPS) for storage times up to 1 month. Architect HCVcAg detection presented high sensitivity/specificity (96%/100%) in DBS tested immediately after sampling, decreasing to 86% sensitivity after 7 days of storage. However, sensitivity increased when an optimized cut-off was applied for each storage time. We conclude that DBS and DPS are suitable samples for HCV RNA detection and quantification, being DPS more reliable for shorter storage times. DBS can be also used for HCVcAg qualitative detection and the sensitivity can be increased when adjusting the cut-off values. IMPORTANCE Hepatitis C infection remains a global burden despite the effectiveness of antivirals. In the WHO roadmap to accomplish HCV elimination by 2030, HCV diagnosis is one of the main targets. However, identifying patients in resource-limited settings and high-risk populations with limited access to healthcare remains a challenge and requires innovative approaches that allow decentralized testing. The significance of our research is in verifying the good performance of dried samples for HCV diagnosis using two different diagnostics assays and considering the effect of room temperature storage in this sample format. We confirmed dried samples are an interesting alternative for HCV screening and reflex testing in resource-limited settings or high-risk populations.
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Affiliation(s)
- Paloma Troyano-Hernáez
- Microbiology Department, HIV-1 Molecular Epidemiology Laboratory, Ramón y Cajal University Hospital-Ramón y Cajal Institute for Health Research (IRYCIS) and RITIP-CoRISpe, Madrid, Spain
| | - Pedro Herrador
- Microbiology Department, HIV-1 Molecular Epidemiology Laboratory, Ramón y Cajal University Hospital-Ramón y Cajal Institute for Health Research (IRYCIS) and RITIP-CoRISpe, Madrid, Spain
- Microbiology Department, Ramón y Cajal University Hospital-Ramón y Cajal Institute for Health Research (IRYCIS), Madrid, Spain
| | - Francisco Gea
- Gastroenterology Department, Ramón y Cajal University Hospital-Ramón y Cajal Institute for Health Research (IRYCIS), Madrid, Spain
| | - Beatriz Romero-Hernández
- Microbiology Department, Ramón y Cajal University Hospital-Ramón y Cajal Institute for Health Research (IRYCIS), Madrid, Spain
- Biomedical Research Center in Epidemiology and Public Health (CIBERESP), Madrid, Spain
| | - Gabriel Reina
- Microbiology Department, Clínica Universidad de Navarra, Pamplona, Spain
- ISTUN, Institute of Tropical Health, Universidad de Navarra, Pamplona, Spain
- IdiSNA, Navarra Institute for Health Research, Pamplona, Spain
| | - Agustín Albillos
- Gastroenterology Department, Ramón y Cajal University Hospital-Ramón y Cajal Institute for Health Research (IRYCIS), Madrid, Spain
- Biomedical Research Center on Liver and Digestive Diseases (CIBEREHD), Madrid, Spain
- University of Alcalá, Madrid, Spain
| | - Juan Carlos Galán
- Microbiology Department, Ramón y Cajal University Hospital-Ramón y Cajal Institute for Health Research (IRYCIS), Madrid, Spain
- Biomedical Research Center in Epidemiology and Public Health (CIBERESP), Madrid, Spain
| | - África Holguín
- Microbiology Department, HIV-1 Molecular Epidemiology Laboratory, Ramón y Cajal University Hospital-Ramón y Cajal Institute for Health Research (IRYCIS) and RITIP-CoRISpe, Madrid, Spain
- Microbiology Department, Ramón y Cajal University Hospital-Ramón y Cajal Institute for Health Research (IRYCIS), Madrid, Spain
- Biomedical Research Center in Epidemiology and Public Health (CIBERESP), Madrid, Spain
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16
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Monchaud C, Woillard JB, Crépin S, Tafzi N, Micallef L, Rerolle JP, Dharancy S, Conti F, Choukroun G, Thierry A, Buchler M, Salamé E, Garrouste C, Duvoux C, Colosio C, Merville P, Anglicheau D, Etienne I, Saliba F, Mariat C, Debette-Gratien M, Marquet P. Tacrolimus Exposure Before and After a Switch From Twice-Daily Immediate-Release to Once-Daily Prolonged Release Tacrolimus: The ENVARSWITCH Study. Transpl Int 2023; 36:11366. [PMID: 37588007 PMCID: PMC10425592 DOI: 10.3389/ti.2023.11366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 07/06/2023] [Indexed: 08/18/2023]
Abstract
LCP-tacrolimus displays enhanced oral bioavailability compared to immediate-release (IR-) tacrolimus. The ENVARSWITCH study aimed to compare tacrolimus AUC0-24 h in stable kidney (KTR) and liver transplant recipients (LTR) on IR-tacrolimus converted to LCP-tacrolimus, in order to re-evaluate the 1:0.7 dose ratio recommended in the context of a switch and the efficiency of the subsequent dose adjustment. Tacrolimus AUC0-24 h was obtained by Bayesian estimation based on three concentrations measured in dried blood spots before (V2), after the switch (V3), and after LCP-tacrolimus dose adjustment intended to reach the pre-switch AUC0-24 h (V4). AUC0-24 h estimates and distributions were compared using the bioequivalence rule for narrow therapeutic range drugs (Westlake 90% CI within 0.90-1.11). Fifty-three KTR and 48 LTR completed the study with no major deviation. AUC0-24 h bioequivalence was met in the entire population and in KTR between V2 and V4 and between V2 and V3. In LTR, the Westlake 90% CI was close to the acceptance limits between V2 and V4 (90% CI = [0.96-1.14]) and between V2 and V3 (90% CI = [0.96-1.15]). The 1:0.7 dose ratio is convenient for KTR but may be adjusted individually for LTR. The combination of DBS and Bayesian estimation for tacrolimus dose adjustment may help with reaching appropriate exposure to tacrolimus rapidly after a switch.
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Affiliation(s)
- Caroline Monchaud
- Department of Pharmacology, Toxicology and Pharmacovigilance, Centre Hospitalier Universitaire de Limoges, Limoges, France
- INSERM1248 Pharmacolgy and Transplantation, Limoges, France
- Fédération Hospitalo-Universitaire Survival Optimization in Organ Transplantation (FHU SUPORT), Limoges, France
| | - Jean-Baptiste Woillard
- Department of Pharmacology, Toxicology and Pharmacovigilance, Centre Hospitalier Universitaire de Limoges, Limoges, France
- INSERM1248 Pharmacolgy and Transplantation, Limoges, France
- Fédération Hospitalo-Universitaire Survival Optimization in Organ Transplantation (FHU SUPORT), Limoges, France
| | - Sabrina Crépin
- Department of Pharmacology, Toxicology and Pharmacovigilance, Centre Hospitalier Universitaire de Limoges, Limoges, France
- INSERM1248 Pharmacolgy and Transplantation, Limoges, France
- Fédération Hospitalo-Universitaire Survival Optimization in Organ Transplantation (FHU SUPORT), Limoges, France
- Unité de Vigilance des Essais Cliniques, Centre Hospitalier Universitaire de Limoges, Limoges, France
| | - Naïma Tafzi
- Department of Pharmacology, Toxicology and Pharmacovigilance, Centre Hospitalier Universitaire de Limoges, Limoges, France
| | - Ludovic Micallef
- Department of Pharmacology, Toxicology and Pharmacovigilance, Centre Hospitalier Universitaire de Limoges, Limoges, France
- Fédération Hospitalo-Universitaire Survival Optimization in Organ Transplantation (FHU SUPORT), Limoges, France
| | - Jean-Philippe Rerolle
- INSERM1248 Pharmacolgy and Transplantation, Limoges, France
- Fédération Hospitalo-Universitaire Survival Optimization in Organ Transplantation (FHU SUPORT), Limoges, France
- Department of Nephrology, Dialysis and Transplantation, Centre Hospitalier Universitaire de Limoges, Limoges, France
| | | | - Filomena Conti
- Department of Hepato-Gastro-Enterology, Hôpital Pitié-Salpêtrière, Paris, France
| | - Gabriel Choukroun
- Department of Nephrology, Internal Medicine, Transplantation, Centre Hospitalier Universitaire (CHU) d'Amiens, Amiens, France
| | - Antoine Thierry
- Fédération Hospitalo-Universitaire Survival Optimization in Organ Transplantation (FHU SUPORT), Poitiers, France
- Department of Nephrology, Hemodialysis and Renal Transplantation, Centre Hospitalier Universitaire (CHU) de Poitiers, Poitiers, France
| | - Matthias Buchler
- Fédération Hospitalo-Universitaire Survival Optimization in Organ Transplantation (FHU SUPORT), Tours, France
- Department of Nephrology–Arterial Hypertension, Dialyses, Renal Transplantation, Centre Hospitalier Universitaire de Tours, Tours, France
| | - Ephrem Salamé
- Fédération Hospitalo-Universitaire Survival Optimization in Organ Transplantation (FHU SUPORT), Tours, France
- Center for Hepatobiliary and Pancreatic Surgery, Hepatic Transplantation, Centre Hospitalier Universitaire de Tours, Tours, France
| | - Cyril Garrouste
- Department of Nephrology–Hemodialyses, Centre Hospitalier Universitaire de Clermont-Ferrand, Clermont-Ferrand, France
| | - Christophe Duvoux
- Department of Hepatology, Hôpital Henri-Mondor, Assistance Publique Hôpitaux de Paris, Créteil, France
| | - Charlotte Colosio
- Department of Nephrology, Centre Hospitalier Universitaire de Reims, Reims, France
| | - Pierre Merville
- Department of Nephrology, Transplantation, Dialysis and Aphereses, Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France
| | - Dany Anglicheau
- Department of Kidney and Metabolism Diseases, Transplantation and Clinical Immunology, Hôpital Necker-Enfants Malades, Paris, France
| | - Isabelle Etienne
- Department of Nephrology, Hemodialysis, Transplantation, Centre Hospitalier Universitaire (CHU) de Rouen, Rouen, France
| | | | - Christophe Mariat
- Department of Nephrology, Dialysis and Renal Transplantation, Centre Hospitalier Universitaire (CHU) de Saint-Étienne, Saint-Etienne, France
| | - Marilyne Debette-Gratien
- INSERM1248 Pharmacolgy and Transplantation, Limoges, France
- Fédération Hospitalo-Universitaire Survival Optimization in Organ Transplantation (FHU SUPORT), Limoges, France
- Department of Hepato-Gastro-Enterology and Nutrition, Centre Hospitalier Universitaire de Limoges, Limoges, France
| | - Pierre Marquet
- Department of Pharmacology, Toxicology and Pharmacovigilance, Centre Hospitalier Universitaire de Limoges, Limoges, France
- INSERM1248 Pharmacolgy and Transplantation, Limoges, France
- Fédération Hospitalo-Universitaire Survival Optimization in Organ Transplantation (FHU SUPORT), Limoges, France
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17
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Malpartida-Cardenas K, Baum J, Cunnington A, Georgiou P, Rodriguez-Manzano J. A dual paper-based nucleic acid extraction method from blood in under ten minutes for point-of-care diagnostics. Analyst 2023; 148:3036-3044. [PMID: 37265396 PMCID: PMC10291277 DOI: 10.1039/d3an00296a] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 05/28/2023] [Indexed: 06/03/2023]
Abstract
Nucleic acid extraction (NAE) plays a crucial role for diagnostic testing procedures. For decades, dried blood spots (DBS) have been used for serology, drug monitoring, and molecular studies. However, extracting nucleic acids from DBS remains a significant challenge, especially when attempting to implement these applications to the point-of-care (POC). To address this issue, we have developed a paper-based NAE method using cellulose filter papers (DBSFP) that operates without the need for electricity (at room temperature). Our method allows for NAE in less than 7 min, and it involves grade 3 filter paper pre-treated with 8% (v/v) igepal surfactant, 1 min washing step with 1× PBS, and 5 min incubation at room temperature in 1× TE buffer. The performance of the methodology was assessed with loop-mediated isothermal amplification (LAMP), targeting the human reference gene beta-actin and the kelch 13 gene from P. falciparum. The developed method was evaluated against FTA cards and magnetic bead-based purification, using time-to-positive (min) for comparative analysis. Furthermore, we optimised our approach to take advantage of the dual functionality of the paper-based extraction, allowing for elution (eluted disk) as well as direct placement of the disk in the LAMP reaction (in situ disk). This flexibility extends to eukaryotic cells, bacterial cells, and viral particles. We successfully validated the method for RNA/DNA detection and demonstrated its compatibility with whole blood stored in anticoagulants. Additionally, we studied the compatibility of DBSFP with colorimetric and lateral flow detection, showcasing its potential for POC applications. Across various tested matrices, targets, and experimental conditions, our results were comparable to those obtained using gold standard methods, highlighting the versatility of our methodology. In summary, this manuscript presents a cost-effective solution for NAE from DBS, enabling molecular testing in virtually any POC setting. When combined with LAMP, our approach provides sample-to-result detection in under 35 minutes.
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Affiliation(s)
- Kenny Malpartida-Cardenas
- Department of Infectious Disease, Faculty of Medicine, Imperial College London, UK.
- Department of Electrical and Electronic Engineering, Faculty of Engineering, Imperial College London, UK
| | - Jake Baum
- Department of Life Sciences, Faculty of Natural Sciences, Imperial College London, UK
- School of Medical Sciences, University of New South Wales, Australia
| | - Aubrey Cunnington
- Department of Infectious Disease, Faculty of Medicine, Imperial College London, UK.
| | - Pantelis Georgiou
- Department of Electrical and Electronic Engineering, Faculty of Engineering, Imperial College London, UK
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18
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Rosé G, Tafzi N, El Balkhi S, Rerolle JP, Debette-Gratien M, Marquet P, Saint-Marcoux F, Monchaud C. New perspectives for the therapeutic drug monitoring of tacrolimus: Quantification in volumetric DBS based on an automated extraction and LC-MS/MS analysis. J Chromatogr B Analyt Technol Biomed Life Sci 2023; 1223:123721. [PMID: 37120962 DOI: 10.1016/j.jchromb.2023.123721] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 04/11/2023] [Accepted: 04/14/2023] [Indexed: 05/02/2023]
Abstract
Volumetric microsampling devices have been developed for home-based capillary blood sampling and are now increasingly proposed for the therapeutic drug monitoring (TDM) of immunosuppressive drugs. Our objective was to validate a LC-MS/MS method for tacrolimus quantification based on both a manual and an automated extraction of dried blood spots (DBS) collected with a volumetric microsampling device. DBS collection was performed by placing a drop of whole blood (WB) pre-spiked with tacrolimus onto a sealing film and placing the hemaPEN® device (Trajan Scientific and Medical, Melbourne, Australia) into the drop according to the device specifications. Tacrolimus was quantified using a fully automatic preparation module connected to a LCMS system (CLAM-3020® and LCMS-8060®, Shimadzu, Marne-la-Vallée, France). The method was validated analytically and clinically in accordance with the EMA and IATDMCT guidelines. The method was linear from 1 to 100 µg/L. Within- and between-run accuracy and precision fulfilled the validation criteria (biases and imprecision <15% or 20% for the lower limit of quantification). No hematocrit effect, matrix effect or carry-over was observed. No selectivity issue was identified and dilution integrity was confirmed. Tacrolimus in DBS was stable for 14 days at room temperature and +4°C, and for 72h at +60°C. There was a good correlation between tacrolimus concentrations measured in WB and in DBS of 20 kidney and liver transplant recipients (r=0.93 and 0.87, for manual and automated extraction respectively). A method for tacrolimus measurement in DBS collected with volumetric micro-sampling device, based on a fully automated process from pre-treatment to LC-MS/MS analysis was developed and validated according to analytical and clinical criteria. This performing sampling and analytical procedure opens the perspective of an easier, faster and more efficient TDM of tacrolimus for patients, clinicians and laboratories.
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Affiliation(s)
- Gauthier Rosé
- Service de Pharmacologie, toxicologie et pharmacovigilance, CHU Limoges, Limoges, France
| | - Naïma Tafzi
- Service de Pharmacologie, toxicologie et pharmacovigilance, CHU Limoges, Limoges, France
| | - Souleiman El Balkhi
- Service de Pharmacologie, toxicologie et pharmacovigilance, CHU Limoges, Limoges, France; INSERM UMR-1248 « Pharmacologie et Transplantation », Université Limoges, Limoges, France; FHU SUPORT, Limoges, France
| | - Jean-Philippe Rerolle
- INSERM UMR-1248 « Pharmacologie et Transplantation », Université Limoges, Limoges, France; FHU SUPORT, Limoges, France; Service de Néphrologie, dialyse et transplantation, CHU Limoges, France
| | - Marilyne Debette-Gratien
- INSERM UMR-1248 « Pharmacologie et Transplantation », Université Limoges, Limoges, France; FHU SUPORT, Limoges, France; Service d'Hépato-gastro-entérologie et nutrition, CHU Limoges, Limoges, France
| | - Pierre Marquet
- Service de Pharmacologie, toxicologie et pharmacovigilance, CHU Limoges, Limoges, France; INSERM UMR-1248 « Pharmacologie et Transplantation », Université Limoges, Limoges, France; FHU SUPORT, Limoges, France
| | - Franck Saint-Marcoux
- Service de Pharmacologie, toxicologie et pharmacovigilance, CHU Limoges, Limoges, France; INSERM UMR-1248 « Pharmacologie et Transplantation », Université Limoges, Limoges, France; FHU SUPORT, Limoges, France
| | - Caroline Monchaud
- Service de Pharmacologie, toxicologie et pharmacovigilance, CHU Limoges, Limoges, France; INSERM UMR-1248 « Pharmacologie et Transplantation », Université Limoges, Limoges, France; FHU SUPORT, Limoges, France.
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19
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Schakelaar MY, Lentjes EGWM, Visser TSQ, Schoneveld AH, Hoefer IE, Tiel Groenestege WM. A Preliminary Analysis of Thyrotropin Measurement from Finger Stick Dried Blood Spot with an Automated High-Throughput Immunoassay Analyzer. Thyroid 2023; 33:449-455. [PMID: 36746909 DOI: 10.1089/thy.2022.0453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Background: Hyper- and hypothyroidism are prevalent in Western countries and often go unnoticed for long periods. Thyrotropin (TSH) as a biomarker of thyroid dysfunction is regularly measured in venous plasma/serum. In newborn screening for congenital hypothyroidism, TSH is measured from dried blood spots (DBSs). DBS enables minimally invasive (at-home) sampling of a small blood volume that can be sent to diagnostic laboratories by regular mail. Methods: In this study, we included 109 patients who presented to the outpatient clinic of the University Medical Center Utrecht. Capillary finger stick was used to spot blood on a filter paper card and was dried. After extraction of TSH from DBS, method comparison with venous TSH was performed on an automated high-throughput immunoassay analyzer. Additional validation steps regarding stability, effect of hematocrit (Hct), precision, and limits of blank and quantitation were conducted according to corresponding Clinical and Laboratory Standards Institute evaluation protocol. Results: Method comparison of TSH from venous plasma versus finger stick DBSs showed an R2 [95% confidence interval] = 0.988 [0.986-0.990]. This enabled correct diagnosis of hypothyrotropinemia and hypothyroidism in 12 of 14 and 6 of 7 cases, respectively, with no false positives. Furthermore, TSH from DBS was stable for at least 4 days at temperatures between -20°C and +30°C, and the maximum decrease of eluate TSH was 1.13% for 1% increase in Hct. Conclusions: TSH from DBS may be accurately measured on an automated high-throughput immunoassay analyzer and could be used to diagnose hypothyroidism and, for the first time, hypothyrotropinemia. This method, when confirmed in larger field studies, may enable individuals to engage in (at-home) sampling of blood on DBSs for telediagnostics, screening programs, patient follow-up, and medication management.
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Affiliation(s)
- Michael Y Schakelaar
- Central Diagnostic Laboratory, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Eef G W M Lentjes
- Central Diagnostic Laboratory, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Timothy S Q Visser
- Central Diagnostic Laboratory, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Arjan H Schoneveld
- Central Diagnostic Laboratory, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Imo E Hoefer
- Central Diagnostic Laboratory, University Medical Center Utrecht, Utrecht, The Netherlands
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20
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Applications of Volumetric Absorptive Microsampling Technique: A Systematic Critical Review. Ther Drug Monit 2023:00007691-990000000-00101. [PMID: 36917733 DOI: 10.1097/ftd.0000000000001083] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 11/19/2022] [Indexed: 03/16/2023]
Abstract
METHODS A novel microsampling device called Volumetric Absorptive microsampling (VAMS), developed in 2014, appears to have resolved the sample inhomogeneity inherent to dried blood spots, with improved precision in the volume of sample collected for measuring drug concentration. A literature search was conducted to identify several analytical and pharmacokinetic studies that have used VAMS in recent years. RESULTS The key factors for proper experimental design and optimization of the extraction of drugs and metabolites of interest from the device were summarized. This review focuses on VAMS and elaborates on bioanalytical factors, method validation steps, and scope of this technique in clinical practice. CONCLUSIONS The promising microsampling method VAMS is especially suited for conducting pharmacokinetic studies with very small volumes of blood, especially in special patient populations. Clinical validation of every VAMS assay must be conducted prior to the routine practical implementation of this method.
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21
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Baillargeon KR, Mace CR. Microsampling tools for collecting, processing, and storing blood at the point-of-care. Bioeng Transl Med 2023; 8:e10476. [PMID: 36925672 PMCID: PMC10013775 DOI: 10.1002/btm2.10476] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 11/29/2022] [Accepted: 12/07/2022] [Indexed: 01/01/2023] Open
Abstract
In the wake of the COVID-19 global pandemic, self-administered microsampling tools have reemerged as an effective means to maintain routine healthcare assessments without inundating hospitals or clinics. Finger-stick collection of blood is easily performed at home, in the workplace, or at the point-of-care, obviating the need for a trained phlebotomist. While the initial collection of blood is facile, the diagnostic or clinical utility of the sample is dependent on how the sample is processed and stored prior to transport to an analytical laboratory. The past decade has seen incredible innovation for the development of new materials and technologies to collect low-volume samples of blood with excellent precision that operate independently of the hematocrit effect. The final application of that blood (i.e., the test to be performed) ultimately dictates the collection and storage approach as certain materials or chemical reagents can render a sample diagnostically useless. Consequently, there is not a single microsampling tool that is capable of addressing every clinical need at this time. In this review, we highlight technologies designed for patient-centric microsampling blood at the point-of-care and discuss their utility for quantitative sampling as a function of collection material and technique. In addition to surveying methods for collecting and storing whole blood, we emphasize the need for direct separation of the cellular and liquid components of blood to produce cell-free plasma to expand clinical utility. Integrating advanced functionality while maintaining simple user operation presents a viable means of revolutionizing self-administered microsampling, establishing new avenues for innovation in materials science, and expanding access to healthcare.
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Affiliation(s)
- Keith R. Baillargeon
- Department of Chemistry, Laboratory for Living DevicesTufts UniversityMedfordMassachusettsUSA
| | - Charles R. Mace
- Department of Chemistry, Laboratory for Living DevicesTufts UniversityMedfordMassachusettsUSA
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22
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Ribet F, Bendes A, Fredolini C, Dobielewski M, Böttcher M, Beck O, Schwenk JM, Stemme G, Roxhed N. Microneedle Patch for Painless Intradermal Collection of Interstitial Fluid Enabling Multianalyte Measurement of Small Molecules, SARS-CoV-2 Antibodies, and Protein Profiling. Adv Healthc Mater 2023; 12:e2202564. [PMID: 36748807 DOI: 10.1002/adhm.202202564] [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: 10/06/2022] [Revised: 01/19/2023] [Indexed: 02/08/2023]
Abstract
Blood sampling is a common practice to monitor health, but it entails a series of drawbacks for patients including pain and discomfort. Thus, there is a demand for more convenient ways to obtain samples. Modern analytical techniques enable monitoring of multiple bioanalytes in smaller samples, opening possibilities for new matrices, and microsampling technologies to be adopted. Interstitial fluid (ISF) is an attractive alternative matrix that shows good correlation with plasma concentration dynamics for several analytes and can be sampled in a minimally invasive and painless manner from the skin at the point-of-care. However, there is currently a lack of sampling devices compatible with clinical translation. Here, to tackle state-of-the-art limitations, a cost-effective and compact single-microneedle-based device designed to painlessly collect precisely 1.1 µL of dermal ISF within minutes is presented. The fluid is volume-metered, dried, and stably stored into analytical-grade paper within the microfluidic device. The obtained sample can be mailed to a laboratory, quantitatively analyzed, and provide molecular insights comparable to blood testing. In a human study, the possibility to monitor various classes of molecular analytes is demonstrated in ISF microsamples, including caffeine, hundreds of proteins, and SARS-CoV-2 antibodies, some being detected in ISF for the first time.
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Affiliation(s)
- Federico Ribet
- Division of Micro and Nanosystems, School of Electrical Engineering and Computer Science, KTH Royal Institute of Technology, Stockholm, 10044, Sweden
| | - Annika Bendes
- Division of Affinity Proteomics, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), SciLifeLab, Solna, 17165, Sweden
| | - Claudia Fredolini
- Division of Affinity Proteomics, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), SciLifeLab, Solna, 17165, Sweden
| | - Mikolaj Dobielewski
- Division of Micro and Nanosystems, School of Electrical Engineering and Computer Science, KTH Royal Institute of Technology, Stockholm, 10044, Sweden
| | - Michael Böttcher
- MVZ Medizinische Labor Dessau Kassel GmbH, D-06847, Dessau-Rosslau, Germany
| | - Olof Beck
- Department of Clinical Neuroscience, Karolinska Institute, Stockholm, 17177, Sweden
| | - Jochen M Schwenk
- Division of Affinity Proteomics, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), SciLifeLab, Solna, 17165, Sweden
| | - Göran Stemme
- Division of Micro and Nanosystems, School of Electrical Engineering and Computer Science, KTH Royal Institute of Technology, Stockholm, 10044, Sweden
| | - Niclas Roxhed
- Division of Micro and Nanosystems, School of Electrical Engineering and Computer Science, KTH Royal Institute of Technology, Stockholm, 10044, Sweden
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23
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Shuford CM, McConnell EW, Dee S, Grant RP. Pre-analytical conditions influencing analysis of folate in dried plasma microsamples. J Mass Spectrom Adv Clin Lab 2023; 28:1-8. [PMID: 36741267 PMCID: PMC9894916 DOI: 10.1016/j.jmsacl.2023.01.003] [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: 09/07/2022] [Revised: 01/16/2023] [Accepted: 01/20/2023] [Indexed: 01/26/2023] Open
Abstract
Introduction Determination of folate insufficiency is of considerable interest given its importance in fetal development and red blood cell formation; however, access to blood tests may be limited due to the requirement for phlebotomy as well as controlled temperature shipping of blood specimens to laboratories for testing due to the inherent instability of folate and its vitamers. Methods An LC-MS/MS test was developed and validated for the measurement of 5-methyltetrahydrofolate (5MTHF) in dried plasma specimens collected from fingerstick blood using a laminar flow blood separation device, as well as liquid venous plasma for comparison. Two pre-analytical factors investigated influencing the measurement of 5MTHF in dried plasma were hemolysis of the fingerstick blood during collection and storage/shipment of the dried plasma. Results Although observed infrequently, hemolysis >10 % resulted in elevated 5MTHF measurements, but hemolysis >1 % resulted in elevated chloride measurements, which were necessary to normalize 5MTHF measurements for variation in volume of dried plasma specimens. Stability of 5MTHF was improved in dried plasma relative to liquid plasma at ambient temperatures, but not sufficiently to allow for uncontrolled temperature shipping despite controlling for humidity and light exposure. Shipping studies emulating ISTA procedure 7D were conducted with a reusable cold packaging solution. The packaging failed to stabilize 5MTHF in dried plasma specimens during a 2-day summer shipping evaluation, but did provide sufficient temperature control to stabilize 5MTHF during the overnight shipping evaluation. Conclusion Our studies provide boundary conditions with respect to hemolysis, storage, and shipping for successful analysis of 5MTHF from dried plasma specimens.
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Affiliation(s)
- Christopher M. Shuford
- Corresponding author at: Center for Esoteric Testing, Laboratory Corporation of America Holdings, Burlington, NC 27215, USA.
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24
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Petrov VI, Anikeev IS, Zayachnikova TE, Strygin AV, Dotsenko AM. ADAPTATION OF “DRIED BLOOD DROP” METHOD FOR THERAPEUTIC DRUG MONITORING. PHARMACY & PHARMACOLOGY 2022. [DOI: 10.19163/2307-9266-2022-10-4-331-342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
To control the concentration of drugs with a narrow therapeutic range, and to conduct effective and safe treatments, Therapeutic Drug Monitoring (TDM) is carried out. However, to date, the implementation of TDM is associated with various difficulties, for the solution of which more convenient and less invasive methods for collecting biological material are being developed.The aim of the study was to develop protocols for the collection and storage of “dried blood spot” (DBS) samples, as well as protocols for the validation methods for the quantitative determination of drugs in whole blood, using this technology for subsequent therapeutic drug monitoring.Materials and methods. To analyze a “dried blood spot” method in detail and to identify the characteristic features of taking and storing biosamples, a collection and analysis of scientific literature over the past 10 years has been conducted. The search for literature materials has been carried out from open and accessible sources located in the scientific libraries of institutions, in electronic databases and search engines: Elibrary, PubMed, Scopus, Cyberleninka, Medline, ScienceDirect, Web of Science, Google Scholar. Primary protocols for taking, storing and analyzing samples of the “dried blood drop” have been prepared. To obtain the adequate quality samples, the developed protocols have been tested and optimized at the stages of selection and storage. By high-performance liquid chromatography with mass spectrometric detection (HPLC-MS/MS), using a “dried blood drop” as a sample preparation, drug validation protocols have been optimized to ensure that acceptable validation characteristics were achieved, and subsequent Therapeutic Drug Monitoring was performed.Results. The features of the collection, storage and analysis of the “dried blood spot” samples have been revealed. Such characteristics as a spot volume effect, a hematocrit effect, a droplet uniformity, which can affect the results of a quantitative HPLC-MS/MS analysis, have been determined. For a successful use of the new methods, appropriate protocols for taking samples of “dried blood spot” from the finger of adult patients and from the heel of newborns, as well as protocols for validating methods for the quantitative determination of drugs from these samples, have been developed.Conclusion. The application of the “dried blood spot” method using newly developed protocols for taking, storing and analyzing biological samples, relieves the existing constraints in conducting TDM, and can later become a promising method for conducting preclinical and clinical studies.
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Affiliation(s)
- V. I. Petrov
- Volgograd State Medical University
Institute for Continuing Medical and Pharmaceutical Education, Volgograd State Medical University
| | - I. S. Anikeev
- Volgograd State Medical University
Institute for Continuing Medical and Pharmaceutical Education, Volgograd State Medical University
| | - T. E. Zayachnikova
- Institute for Continuing Medical and Pharmaceutical Education, Volgograd State Medical University
| | - A. V. Strygin
- Volgograd State Medical University
Scientific Center of Innovative Medicines with Pilot Production, Volgograd State Medical University
Volgograd Medical Research Center
| | - A. M. Dotsenko
- Volgograd State Medical University
Volgograd Medical Research Center
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25
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Groh R, Weiss LM, Börsch-Supan M, Börsch-Supan A. Effects of spot size on biomarker levels of field-collected dried blood spots: A new algorithm for exact dried blood spot size measurement. Am J Hum Biol 2022; 34:e23777. [PMID: 36001479 PMCID: PMC9606603 DOI: 10.1002/ajhb.23777] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 05/24/2022] [Accepted: 06/03/2022] [Indexed: 01/25/2023] Open
Abstract
OBJECTIVES The quality of blood values analyzed from survey-collected dried blood spot (DBS) samples is affected by fieldwork conditions, particularly spot size. We offer an image-based algorithm that accurately measures the area of field-collected DBS and we investigate the impact of spot size on the analyzed blood marker values. METHODS SHARE, a pan-European study, collected 24 000 DBS samples in 12 countries in its sixth wave. Our new algorithm uses photographs of the DBS samples to calculate the number of pixels of the blood-covered area to measure the spot sizes accurately. We ran regression models to examine the association of spot size and seven DBS analytes. We then compared the application of our new spot-size measures to common spot-size estimation. RESULTS Using automated spot-size measurement, we found that spot size has a significant effect on all markers. Smaller spots are associated with lower measured levels, except for HbA1c, for which we observe a negative effect. Our precisely measured spot sizes explain substantially more variance of DBS analytes compared to commonly used spot-size estimation. CONCLUSION The new algorithm accurately measures the size of field-collected DBS in an automated way. This methodology can be applied to surveys even with very large numbers of observations. The measured spot sizes improve the accuracy of conversion formulae that translate blood marker values derived from DBS into venous blood values. The significance of the spot-size effects on biomarkers in DBS should also incentivize the improvement of fieldwork training and monitoring.
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Affiliation(s)
- Rebecca Groh
- Technical University of Munich, Munich, Germany
- Munich Center for the Economics of Aging at the Max Planck Institute for Social Law and Social Policy, Munich, Germany
| | - Luzia M. Weiss
- Munich Center for the Economics of Aging at the Max Planck Institute for Social Law and Social Policy, Munich, Germany
| | | | - Axel Börsch-Supan
- Technical University of Munich, Munich, Germany
- Munich Center for the Economics of Aging at the Max Planck Institute for Social Law and Social Policy, Munich, Germany
- Survey of Health, Ageing and Retirement in Europe, Munich, Germany
- National Bureau of Economic Research, Cambridge, Massachusetts
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26
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Qavi AJ, Wu C, Lloyd M, Zaman MMU, Luan J, Ballman C, Leung DW, Crick SL, Farnsworth CW, Amarasinghe GK. Plasmonic Fluor-Enhanced Antigen Arrays for High-Throughput, Serological Studies of SARS-CoV-2. ACS Infect Dis 2022; 8:1468-1479. [PMID: 35867632 PMCID: PMC9344907 DOI: 10.1021/acsinfecdis.2c00086] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Serological testing for acute infection or prior exposure is critical for patient management and coordination of public health decisions during outbreaks. Current methods have several limitations, including variable performance, relatively low analytical and clinical sensitivity, and poor detection due to antigenic drift. Serological methods for SARS-CoV-2 detection for the ongoing COVID-19 pandemic suffer from several of these limitations and serves as a reminder of the critical need for new technologies. Here, we describe the use of ultrabright fluorescent reagents, Plasmonic Fluors, coupled with antigen arrays that address a subset of these limitations. We demonstrate its application using patient samples in SARS-CoV-2 serological assays. In our multiplexed assay, SARS-CoV-2 antigens were spotted into 48-plex arrays within a single well of a 96-well plate and used to evaluate remnant laboratory samples of SARS-CoV-2 positive patients. Signal-readout was performed with Auragent Bioscience's Empower microplate reader, and microarray analysis software. Sample volumes of 1 μL were used. High sensitivity of the Plasmonic Fluors combined with the array format enabled us to profile patient serological response to eight distinct SARS-CoV-2 antigens and evaluate responses to IgG, IgM, and IgA. Sensitivities for SARS-CoV-2 antigens during the symptomatic state ranged between 72.5 and 95.0%, specificity between 62.5 and 100%, and the resulting area under the curve values between 0.76 and 0.97. Together, these results highlight the increased sensitivity for low sample volumes and multiplex capability. These characteristics make Plasmonic Fluor-enhanced antigen arrays an attractive technology for serological studies for the COVID-19 pandemic and beyond.
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Affiliation(s)
- Abraham J. Qavi
- Department
of Pathology & Immunology, Washington
University School of Medicine, St. Louis, Missouri 63110, United States
| | - Chao Wu
- Department
of Pathology & Immunology, Washington
University School of Medicine, St. Louis, Missouri 63110, United States
| | - Matthew Lloyd
- Department
of Pathology & Immunology, Washington
University School of Medicine, St. Louis, Missouri 63110, United States
| | | | - Jingyi Luan
- Auragent
Bioscience, St. Louis, Missouri 63108, United
States
| | - Claire Ballman
- Department
of Pathology & Immunology, Washington
University School of Medicine, St. Louis, Missouri 63110, United States
| | - Daisy W. Leung
- Department
of Internal Medicine, Washington University
School of Medicine, St. Louis, Missouri 63110, United States
| | - Scott L. Crick
- Auragent
Bioscience, St. Louis, Missouri 63108, United
States
| | - Christopher W. Farnsworth
- Department
of Pathology & Immunology, Washington
University School of Medicine, St. Louis, Missouri 63110, United States
| | - Gaya K. Amarasinghe
- Department
of Pathology & Immunology, Washington
University School of Medicine, St. Louis, Missouri 63110, United States
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27
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Woo S, Rosli N, Choi S, Kwon HJ, Yoon YA, Ahn S, Lee JY, Hong SP, Jeong JS. Development of Certified Reference Material for Amino Acids in Dried Blood Spots and Accuracy Assessment of Disc Sampling. Anal Chem 2022; 94:10127-10134. [PMID: 35802862 PMCID: PMC9310008 DOI: 10.1021/acs.analchem.2c01349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
To achieve the measurement reliability of amino acids
used as diagnostic
markers in clinical fields, establishing a reference measurement system
is required, in which certified reference materials (CRMs) are an
essential step in the hierarchy of measurement traceability. This
study describes the development of dried blood spot (DBS) CRMs for
amino acid analysis with complete measurement traceability to the
International System of Units (SI). Six essential amino acids—proline,
valine, isoleucine, leucine, phenylalanine, and tyrosine—were
analyzed using isotope-dilution liquid chromatography–mass
spectrometry (ID-MS). For minimizing measurement bias and uncertainty
overestimation, whole spots with 50 μL of whole blood were adopted
in the certification. The between-spot homogeneities by whole spot
sampling were lower than 2.1%. The relative expanded uncertainties
of the six amino acids in the developed DBS CRMs were lower than 5.7%
at 95% confidence. The certified values are traceable to SI through
both gravimetric preparation and the primary method in certification,
ID-MS. Comparison among DBS testing laboratories revealed discrepancies
between the whole spot and disc sampling methods. The actual sampling
volume was accurately estimated by weighing, which revealed the possibility
of underestimation in routine DBS testing. The candidate CRMs can
support the standardization of DBS testing for amino acids through
the qualification and validation of many kinds of measurement procedures
to compensate the measurement bias caused by matrix-specific sampling
error.
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Affiliation(s)
- Sangji Woo
- Biometrology Group, Division of Chemical and Biological Metrology, Korea Research Institute of Standards and Science, 267 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea.,Department of Oriental Pharmaceutical Sciences, College of Pharmacy, KyungHee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 16954, Republic of Korea
| | - Nordiana Rosli
- Biometrology Group, Division of Chemical and Biological Metrology, Korea Research Institute of Standards and Science, 267 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea.,Department of Bio-Analytical Science, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea.,Training Division Ministry of Health Malaysia, Level 6 Menara Prisma, Presint 3, 62675 Putrajaya, Malaysia
| | - Seohyun Choi
- Biometrology Group, Division of Chemical and Biological Metrology, Korea Research Institute of Standards and Science, 267 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea.,Department of Bio-Analytical Science, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
| | - Ha-Jeong Kwon
- Biometrology Group, Division of Chemical and Biological Metrology, Korea Research Institute of Standards and Science, 267 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
| | - Young Ahn Yoon
- Department of Laboratory Medicine, Soonchunhyang University Cheonan Hospital, Soonchunhyang Univerisity College of Medicine, 31, Suncheonhyang 6-gil, Dongnam-gu, Cheonan-si, Chungcheongnam-do 130-701, Republic of Korea
| | - Sunhyun Ahn
- Seoul Clinical Laboratories, 13, Heungdeok 1-ro, Giheung-gu, Yongin-si, Gyeonggi-do 34113, Republic of Korea
| | - Ji Youn Lee
- Biometrology Group, Division of Chemical and Biological Metrology, Korea Research Institute of Standards and Science, 267 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
| | - Seon-Pyo Hong
- Department of Oriental Pharmaceutical Sciences, College of Pharmacy, KyungHee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 16954, Republic of Korea
| | - Ji-Seon Jeong
- Biometrology Group, Division of Chemical and Biological Metrology, Korea Research Institute of Standards and Science, 267 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea.,Department of Bio-Analytical Science, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
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28
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Neumark B, Elkabets O, Shefer G, Buch A, Stern N, Amirav A. Whole blood analysis for medical diagnostics by GC-MS with Cold EI. JOURNAL OF MASS SPECTROMETRY : JMS 2022; 57:e4873. [PMID: 35796286 PMCID: PMC9540862 DOI: 10.1002/jms.4873] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 06/19/2022] [Accepted: 06/26/2022] [Indexed: 06/15/2023]
Abstract
This study covers a new method and related instrumentation for whole blood analysis for medical diagnostics. Two-μL whole blood samples were collected using "minimal invasive" diabetes lancet and placed on a thin glass rod mounted on a newly designed BloodProbe. The BloodProbe with the whole blood sample was inserted directly into a ChromatoProbe mounted on the GC inlet, and thus, no sample preparation was involved. The analysis was performed within 10 min using a GC-MS with Cold EI that is based on interfacing GC and MS with supersonic molecular beams (SMB) along with electron ionization of vibrationally cold sample compounds in the SMB (hence the name Cold EI). Our blood analysis revealed several observations: (1) Detailed mass chromatograms were generated with full range of all the nonpolar lipids in blood including fatty acids, cholesterol, cholesteryl esters, vitamin E, monoglycerides, diglycerides, and triglycerides. (2) The analysis of whole blood was found to be as informative as the conventional clinical analysis of blood serum. (3) Cholesteryl esters were more sensitive than free cholesterol alone to the effect of diet of obese people. (4) Major enhancement of several fatty acid methyl esters was found in the blood of a cancer patient with liver dysfunction. (5) Vitamin E as both α- and β-tocopherol was found with person-dependent ratio of these two compounds. (6) Elemental sulfur S8 was identified in blood. (7) Several drugs and other compounds were found and need further study of their correlation to medical issues.
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Affiliation(s)
- Benny Neumark
- School of ChemistryTel Aviv UniversityTel AvivIsrael
| | - Oneg Elkabets
- School of ChemistryTel Aviv UniversityTel AvivIsrael
| | - Gabi Shefer
- The Institute of Endocrinology, Metabolism and HypertensionTel‐Aviv Sourasky Medical CenterTel AvivIsrael
| | - Assaf Buch
- The Institute of Endocrinology, Metabolism and HypertensionTel‐Aviv Sourasky Medical CenterTel AvivIsrael
| | - Naftali Stern
- The Institute of Endocrinology, Metabolism and HypertensionTel‐Aviv Sourasky Medical CenterTel AvivIsrael
- The Sagol Center for Epigenetics of Aging and MetabolismTel‐Aviv Sourasky Medical CenterTel AvivIsrael
- Sackler Faculty of MedicineTel Aviv UniversityTel AvivIsrael
| | - Aviv Amirav
- School of ChemistryTel Aviv UniversityTel AvivIsrael
- Aviv AnalyticalHod HasharonIsrael
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Samsonova JV, Saushkin NY, Osipov AP. Dried Blood Spots technology for veterinary applications and biological investigations: technical aspects, retrospective analysis, ongoing status and future perspectives. Vet Res Commun 2022; 46:655-698. [PMID: 35771305 PMCID: PMC9244892 DOI: 10.1007/s11259-022-09957-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 06/13/2022] [Indexed: 11/25/2022]
Abstract
Dried Blood Spots (DBS) technology has become a valuable tool in medical studies, however, in veterinary and biological research DBS technology applications are still limited. Up-to-date no review has comprehensively integrated all the evidence existing across the fields, technologies and animal species. In this paper we summarize the current applications of DBS technology in the mentioned areas, and provide a scope of different types of dried sample carriers (cellulose and non-cellulose), sampling devices, applicable methods for analyte extraction and detection. Mammals, birds, insects and other species are represented as the study objects. Besides the blood, the review considers a variety of specimens, such as milk, saliva, tissue samples and others. The main applications of dried samples highlighted in the review include epidemiological surveys and monitoring for infections agents or specific antibodies for disease/vaccination control in households and wildlife. Besides the genetic investigations, the paper describes detection of environmental contaminants, pregnancy diagnosis and many other useful applications of animal dried samples. The paper also analyses dried sample stability and storage conditions for antibodies, viruses and other substances. Finally, recent developments and future research for DBS technology in veterinary medicine and biological sciences are discussed.
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Affiliation(s)
- Jeanne V Samsonova
- Faculty of Chemistry, Lomonosov Moscow State University, Moscow, Russia.
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Performance of Dried Blood Spot Samples in SARS-CoV-2 Serolomics. Microorganisms 2022; 10:microorganisms10071311. [PMID: 35889030 PMCID: PMC9322257 DOI: 10.3390/microorganisms10071311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 06/20/2022] [Accepted: 06/24/2022] [Indexed: 02/01/2023] Open
Abstract
Numerous sero-epidemiological studies have been initiated to investigate the spread and dynamics of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). To address the concomitant need for serological high-throughput assays, a bead-based multiplex serology assay, specific for SARS-CoV-2, had been developed. SARS-CoV-2 serolomics allows for measuring antibody responses to almost the entire SARS-CoV-2 proteome in up to 2000 serum samples per day. To enlarge the pool of eligible sample collection methods, we here test the compatibility of serolomics with dried blood spot (DBS)-derived eluates. Antibody levels of nine SARS-CoV-2 antigens, including the nucleocapsid (N) and receptor-binding domain of the spike protein (S1-RBD), were measured in 142 paired DBS and serum samples. The numeric correlation between the two sample types was high, with a Pearson’s r of 0.88 for both S1-RBD and N and intraclass correlation coefficients of 0.93 and 0.92, respectively. Systematically reduced antibody levels in DBS eluates were compensated by lowering the cutoffs for seropositivity accordingly. This enabled the concordant classification of SARS-CoV-2 seropositivity, without loss in sensitivity. Antibody levels against accessory SARS-CoV-2 antigens also showed a high concordance, demonstrating that DBS-derived eluates are eligible for SARS-CoV-2 serolomics. DBS cards facilitate the collection of blood samples, as they obviate the need for medically trained personnel and can be shipped at room temperature. In combination with SARS-CoV-2 serolomics, DBS cards enable powerful sero-epidemiological studies, thus allowing for the monitoring of patients and epidemiological analyses in resource-poor settings.
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Analysis of Circulating Fatty Acid Profiles in Free-Ranging and Managed Care Marine Toads (Rhinella marina) with a Comparison of Whole-Blood Vial and Whole-Blood Dried Blood Spot Card Analyses. JOURNAL OF ZOOLOGICAL AND BOTANICAL GARDENS 2022. [DOI: 10.3390/jzbg3030024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
This study provides novel data on circulating concentrations of whole-blood fatty acids (FAs) in marine toads (Rhinella marina) via dried blood spot (DBS) card technology as a potential amphibian model species. Free-ranging (n = 10) animals were compared to managed populations fed two diet strategies for 60 days (n = 6 per diet). Thirty-six individual FAs were analyzed, with 28 found in significant reportable quantities. Eight FA groupings were represented. Traditional whole-blood vial (WBV) FA percentages were also collected and compared to DBS after managed care for 60 days. Results showed eleven individual FAs and four FA groups were higher in free-ranging toads (n = 10; p ≤ 0.05), while three FAs and three groups were higher in managed care (n = 12; p ≤ 0.05). FA concentrations compared between DBS cards and WBV at day 60 generally agreed, although two individual FAs and one grouping were higher in DBS (p ≤ 0.05). When free-ranging FAs were analyzed by sex, four individual FAs and two groupings were higher in females, while four individual FAs and one grouping were higher in males. Understanding normal FA circulating levels and how husbandry changes them may impact amphibian health. Additionally, DBS cards may provide a convenient sampling tool for fieldwork.
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Allaway D, Alexander JE, Carvell-Miller LJ, Reynolds RM, Winder CL, Weber RJM, Lloyd GR, Southam AD, Dunn WB. Suitability of Dried Blood Spots for Accelerating Veterinary Biobank Collections and Identifying Metabolomics Biomarkers With Minimal Resources. Front Vet Sci 2022; 9:887163. [PMID: 35812865 PMCID: PMC9258959 DOI: 10.3389/fvets.2022.887163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 05/05/2022] [Indexed: 11/13/2022] Open
Abstract
Biomarker discovery using biobank samples collected from veterinary clinics would deliver insights into the diverse population of pets and accelerate diagnostic development. The acquisition, preparation, processing, and storage of biofluid samples in sufficient volumes and at a quality suitable for later analysis with most suitable discovery methods remain challenging. Metabolomics analysis is a valuable approach to detect health/disease phenotypes. Pre-processing changes during preparation of plasma/serum samples may induce variability that may be overcome using dried blood spots (DBSs). We report a proof of principle study by metabolite fingerprinting applying UHPLC-MS of plasma and DBSs acquired from healthy adult dogs and cats (age range 1–9 years), representing each of 4 dog breeds (Labrador retriever, Beagle, Petit Basset Griffon Vendeen, and Norfolk terrier) and the British domestic shorthair cat (n = 10 per group). Blood samples (20 and 40 μL) for DBSs were loaded onto filter paper, air-dried at room temperature (3 h), and sealed and stored (4°C for ~72 h) prior to storage at −80°C. Plasma from the same blood draw (250 μL) was prepared and stored at −80°C within 1 h of sampling. Metabolite fingerprinting of the DBSs and plasma produced similar numbers of metabolite features that had similar abilities to discriminate between biological classes and correctly assign blinded samples. These provide evidence that DBSs, sampled in a manner amenable to application in in-clinic/in-field processing, are a suitable sample for biomarker discovery using UHPLC-MS metabolomics. Further, given appropriate owner consent, the volumes tested (20–40 μL) make the acquisition of remnant blood from blood samples drawn for other reasons available for biobanking and other research activities. Together, this makes possible large-scale biobanking of veterinary samples, gaining sufficient material sooner and enabling quicker identification of biomarkers of interest.
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Affiliation(s)
- David Allaway
- WALTHAM Petcare Science Institute, Freeby Lane, Waltham-on-the-Wolds, Melton Mowbray, United Kingdom
- *Correspondence: David Allaway
| | - Janet E. Alexander
- WALTHAM Petcare Science Institute, Freeby Lane, Waltham-on-the-Wolds, Melton Mowbray, United Kingdom
| | - Laura J. Carvell-Miller
- WALTHAM Petcare Science Institute, Freeby Lane, Waltham-on-the-Wolds, Melton Mowbray, United Kingdom
| | - Rhiannon M. Reynolds
- WALTHAM Petcare Science Institute, Freeby Lane, Waltham-on-the-Wolds, Melton Mowbray, United Kingdom
| | - Catherine L. Winder
- School of Biosciences and Phenome Centre Birmingham, University of Birmingham, Birmingham, United Kingdom
- Department of Biochemistry and Systems Biology, Institute of Systems, Molecular, and Integrative Biology, University of Liverpool, Liverpool, United Kingdom
| | - Ralf J. M. Weber
- School of Biosciences and Phenome Centre Birmingham, University of Birmingham, Birmingham, United Kingdom
| | - Gavin R. Lloyd
- School of Biosciences and Phenome Centre Birmingham, University of Birmingham, Birmingham, United Kingdom
| | - Andrew D. Southam
- School of Biosciences and Phenome Centre Birmingham, University of Birmingham, Birmingham, United Kingdom
| | - Warwick B. Dunn
- School of Biosciences and Phenome Centre Birmingham, University of Birmingham, Birmingham, United Kingdom
- Department of Biochemistry and Systems Biology, Institute of Systems, Molecular, and Integrative Biology, University of Liverpool, Liverpool, United Kingdom
- Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, United Kingdom
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Direct Derivatization in Dried Blood Spots for Oxidized and Reduced Glutathione Quantification in Newborns. Antioxidants (Basel) 2022; 11:antiox11061165. [PMID: 35740062 PMCID: PMC9219658 DOI: 10.3390/antiox11061165] [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: 05/11/2022] [Revised: 06/06/2022] [Accepted: 06/09/2022] [Indexed: 11/29/2022] Open
Abstract
The glutathione (GSH)-to-glutathione disulfide (GSSG) ratio is an essential node contributing to intracellular redox status. GSH/GSSG determination in whole blood can be accomplished by liquid chromatography–mass spectrometry (LC-MS) after the derivatization of GSH with N-ethylmaleimide (NEM). While this is feasible in a laboratory environment, its application in the clinical scenario is cumbersome and therefore ranges reported in similar populations differ noticeably. In this work, an LC-MS procedure for the determination of GSH and GSSG in dried blood spot (DBS) samples based on direct in situ GSH derivatization with NEM of only 10 µL of blood was developed. This novel method was applied to 73 cord blood samples and 88 residual blood volumes from routine newborn screening performed at discharge from healthy term infants. Two clinical scenarios simulating conditions of sampling and storage relevant for routine clinical analysis and clinical trials were assessed. Levels of GSH-NEM and GSSG measured in DBS samples were comparable to those obtained by liquid blood samples. GSH-NEM and GSSG median values for cord blood samples were significantly lower than those for samples at discharge. However, the GSH-NEM-to-GSSG ratios were not statistically different between both groups. With DBS testing, the immediate manipulation of samples by clinical staff is reduced. We therefore expect that this method will pave the way in providing an accurate and more robust determination of the GSH/GSSG values and trends reported in clinical trials.
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Samsonova JV, Saushkin NY, Osipov AP. Dried Samples of Biological Fluids on Porous Membranes as a Promising Sample Preparation Method for Biomedical and Veterinary Diagnostics. JOURNAL OF ANALYTICAL CHEMISTRY 2022. [DOI: 10.1134/s1061934822040104] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Wood J, Minter LJ, Bibus D, Tollefson TN, Ange-van Heugten K. Assessment of the effects of storage temperature on fatty acid analysis using dried blood spot cards from managed southern white rhinoceroses ( Ceratotherium simum simum): implications for field collection and nutritional care. PeerJ 2022; 10:e12896. [PMID: 35186484 PMCID: PMC8852271 DOI: 10.7717/peerj.12896] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 01/16/2022] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Southern white rhinoceroses (Ceratotherium simum simum) are an endangered species in decline due to poaching and negative habitat changes. Conservation of the species has become increasingly important and a focus on better human management has become prevalent. One area of management that impacts southern white rhinoceroses is nutritional health monitoring, which is often conducted through blood analysis. Blood analysis conducted during field research can be difficult due to temperature, distance, and limited technological resources, so new methods of fast, and relatively stable blood collection are being pursued. One method that has been used in humans for many years is beginning to make its way into wildlife studies: the use of dried blood spot (DBS) cards. These cards are used as a tool to store single drops of whole blood on specialized filter paper and, once dried, can be used for nutritional biomarker analysis. An area of interest for southern white rhinoceroses and nutrition is monitoring fatty acid percentages for cardiovascular, immune, and reproductive health. The time and temperature limitations for storing blood fractions or liquid whole blood when analyzing fatty acids have been investigated, but few studies have performed storage studies on DBS cards colder than -20 °C or in non-human species. METHODS In order to better understand the limitations of DBS cards and the impact of temperature on fatty acid DBS samples in long-term storage, triplicate samples from seven adult southern white rhinoceroses at the North Carolina Zoo were collected and subjected to three storage treatments (immediate, room temperature (23 °C), or frozen (-80 °C) for 1 year). RESULTS Stearidonic (18:4w3) (Δ 0.3%), arachdic (20:0) (Δ 0.1%), eicosatetraenoic (20:4w3) (Δ 0.2%), and erucic acid (22:1w9) (Δ 0.1%) were in higher concentration in frozen than initial. Fatty acids in higher concentrations in the initial samples than frozen were myristic (14:0) (Δ 0.2%), mead (20:3w9) (Δ 0.1%), docosatetraenoic (22:4w6) (Δ 0.2%), nervonic (24:1) (Δ 0.1%), and total highly unsaturated fatty acids (HUFAs) (Δ 0.7%). Stearic (18:0) (Δ 2.2%), stearidonic (18:4w3) (Δ 0.3%), arachdic (20:0) (Δ 0.2%), paullinic (20:1w7) (Δ 0.4%), eicosatetraenoic (20:4w3) (Δ 0.1%), eicosapentaenoic (20:5w3) (Δ 0.1%), docosatetraenoic (22:4w6) (Δ 0.2%), nervonic acid (24:1) (Δ 0.2%), monoenes (Δ 1.9%), and total saturates (Δ 3.6%) had higher concentrations in room temperature than initial. Linoleic (18:2w6) (Δ 4.9%), mead acid (20:3w9) (Δ 0.1%), total polyunsaturated fatty acids (5.3%), and total omega-6 fatty acids (Δ 4.8%) had higher concentrations in initial compared to room temperature. Arachidonic (20:4w6) (Δ 0.4%) and omega-3 docosapentaenoic acid (22:5w3) (Δ 0.1%), had higher concentrations in frozen than in room temperature. DISCUSSION The frozen samples had the fewest statistical differences compared to room temperature samples and essential omega-3 and -6 fatty acids were stable with freezing up to 1 year. While more research is still warranted, current results suggest that DBS samples are best utilized when immediate analysis or -80 °C storage is available.
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Affiliation(s)
- Jordan Wood
- Animal Science, North Carolina State University, Raleigh, North Carolina, United States
| | | | - Doug Bibus
- Lipid Technologies LLC, Austin, Minnesota, United States
| | - Troy N. Tollefson
- Mazuri® Exotic Animal Nutrition, PMI Nutrition, Land O’ Lakes, Inc., St. Louis, Missouri, United States
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Schleif WS, Harlan RS, Hamblin F, Amankwah EK, Goldenberg NA, Hernandez RG, Johnson SB, Reed S, Graham DR. Defining the Healthy Infant Metabolome: Liquid Chromatography Tandem-Mass Spectrometry Analysis of Dried Blood Spot Extracts from the Prospective Research on Early Determinants of Illness and Children's Health Trajectories Birth Cohort Study. J Pediatr 2022; 241:251-256.e4. [PMID: 34626671 PMCID: PMC8838877 DOI: 10.1016/j.jpeds.2021.09.061] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 08/25/2021] [Accepted: 09/30/2021] [Indexed: 11/24/2022]
Abstract
Newborn screening using dried plasma spots offers preanalytical advantages over conventional cards for plasma-associated targets of interest. Herein we present dried plasma spot-based methods for measuring metabolites using a 250+ compound liquid chromatography tandem mass spectrometry library. Quality assurance reduced this library to 134, and from these, 30 compounds determined the normal newborn reference ranges.
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Affiliation(s)
- William S Schleif
- Johns Hopkins All Children's Pediatric Biorepository, Johns Hopkins All Children's Hospital, St Petersburg, FL; Pediatric Biospecimen Science Program, Johns Hopkins All Children's Institute for Clinical and Translational Research, St Petersburg, FL
| | - Robert S Harlan
- Johns Hopkins Molecular Determinants Center and Core, Johns Hopkins All Children's Hospital, St Petersburg, FL; Johns Hopkins University School of Medicine, Baltimore, MD
| | - Frances Hamblin
- Clinical Coordinating Center, Johns Hopkins All Children's Institute for Clinical and Translational Research, St Petersburg, FL
| | - Ernest K Amankwah
- Data Coordinating Center, Johns Hopkins All Children's Institute for Clinical and Translational Research, St Petersburg, FL; Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD; Department of Oncology, Johns Hopkins University School of Medicine, St Petersburg, FL
| | - Neil A Goldenberg
- Pediatric Biospecimen Science Program, Johns Hopkins All Children's Institute for Clinical and Translational Research, St Petersburg, FL; Clinical Coordinating Center, Johns Hopkins All Children's Institute for Clinical and Translational Research, St Petersburg, FL; Data Coordinating Center, Johns Hopkins All Children's Institute for Clinical and Translational Research, St Petersburg, FL; Pediatric Health Equity Research Program, Johns Hopkins All Children's Institute for Clinical and Translational Research, St Petersburg, FL; Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD; Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Raquel G Hernandez
- Pediatric Health Equity Research Program, Johns Hopkins All Children's Institute for Clinical and Translational Research, St Petersburg, FL; Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Sara B Johnson
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD; Department of Population, Family and Reproductive Health, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD
| | - Shannon Reed
- Johns Hopkins Molecular Determinants Center and Core, Johns Hopkins All Children's Hospital, St Petersburg, FL
| | - David R Graham
- Pediatric Biospecimen Science Program, Johns Hopkins All Children's Institute for Clinical and Translational Research, St Petersburg, FL; Johns Hopkins Molecular Determinants Center and Core, Johns Hopkins All Children's Hospital, St Petersburg, FL; Department of Anesthesia and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, MD.
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Wood J, Minter LJ, Bibus D, Stoskopf MK, Fellner V, Ange-van Heugten K. Comparison of African savanna elephant ( Loxodonta africana) fatty acid profiles in whole blood, whole blood dried on blood spot cards, serum, and plasma. PeerJ 2022; 9:e12650. [PMID: 35003934 PMCID: PMC8679954 DOI: 10.7717/peerj.12650] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 11/28/2021] [Indexed: 01/02/2023] Open
Abstract
Background African elephants in managed care have presented differences in the balance between omega-3 and omega-6 fatty acids, a situation primarily thought to be due to dietary differences between the managed animals and their free-ranging counterparts. Because of this, circulating fatty acid status is included in routine monitoring of elephant health. A method of blood collection that requires only a few drops of whole blood, dried on filter paper (DBS) and can be used for analyzing full fatty acid profiles offers advantages in clinical application. Methods This study compared the use of whole blood, and whole blood DBS, serum or plasma for use in evaluating circulating fatty acid composition in African savannah elephants. Samples from six African elephants (two males and four females) were collected during the same week at the NC Zoo, Asheboro, NC. Results Results found only 2 of 36 individual fatty acids and none of the 10 fatty acid groupings were different when comparing the four blood fraction sample types to each other with Mann-Whitney U-Test pairwise comparisons. Myristic acid (14:0) was lower in the DBS samples than in whole blood, serum, and plasma and pentadecaenoic acid (15:1) was slightly more concentrated in DBS and whole blood. Discussion Results indicate that fatty acid profile of serum, plasma, whole blood, and DBS are comparable in African elephants. The DBS method offers advantages in acquisition and handling and may be preferable to other methods in both routine health assessment of captive animals and field research on free ranging animals.
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Affiliation(s)
- Jordan Wood
- Animal Science, North Carolina State University, Raleigh, NC, United States of America.,Environmental Medicine Consortium and Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, United States of America
| | - Larry J Minter
- Environmental Medicine Consortium and Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, United States of America.,North Carolina Zoo, Asheboro, NC, United States of America
| | - Doug Bibus
- Lipid Technologies LLC, Austin, MN, United States of America
| | - Michael K Stoskopf
- Environmental Medicine Consortium and Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, United States of America
| | - Vivek Fellner
- Animal Science, North Carolina State University, Raleigh, NC, United States of America
| | - Kimberly Ange-van Heugten
- Animal Science, North Carolina State University, Raleigh, NC, United States of America.,Environmental Medicine Consortium and Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, United States of America
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Salazar A, Ochoa-Corona FM, Talley JL, Noden BH. An elution independent collection device (EICD) for rapid collection of Anaplasma marginale DNA from blood samples. Acta Trop 2022; 225:106201. [PMID: 34688633 DOI: 10.1016/j.actatropica.2021.106201] [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: 05/05/2021] [Revised: 10/12/2021] [Accepted: 10/15/2021] [Indexed: 11/01/2022]
Abstract
Currently utilized molecular detection methods are based mainly on nucleic acid extraction, amplification, and detection procedures that may require costly equipment, numerous reagents, and highly trained personnel. These requirements make diagnostic tests expensive, time-consuming, and not suitable for point-of-care applications. There is an increasing demand for simple, low-cost portable technologies. To overcome these challenges, a paper-based elution independent collection device (EICD) was designed to collect microorganisms and recover nucleic acids for molecular biology applications with minimal steps. In this study, we demonstrate a simpler Anaplasma marginale detection that uses an EICD for nucleic acid collection combined with recombinase polymerase amplification (RPA), and a lateral flow dipstick for detection of the specified target. A pre-lysis blood treatment was optimized that uses Triton X-100 lysis buffer and bovine serum album in wash buffer. Blood samples were incubated for 5 min at room temperature and run through the EICD. Four 1-mm diameter discs excised from EICD were used as template in basic RPA and lateral flow (nfo) (endonuclease IV) RPA assays. Each disc of soluble central membrane (SCM) carried circa 0.249 pg/µl of Anaplasma DNA. The percentage of nucleic acid recoverable from the SCM ranged between 60% - 70%. Blood samples infected with A. marginale were treated with Triton X-100 pre-lysis protocol. All samples tested positive by PCR and RPA methods. EICD-driven collection of blood samples is a practical method successfully adapted to detect Anaplasma spp. or blood-borne pathogen DNA and has potential for point-of-care detection in resource-limited settings.
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Boffel L, Heughebaert L, Lambrecht S, Luginbühl M, Stove CP. In-depth evaluation of automated non-contact reflectance-based hematocrit prediction of dried blood spots. Analyst 2022; 147:5445-5454. [DOI: 10.1039/d2an01642g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Using the automated CAMAG® DBS-MS 500 HCT system, a UV-Vis-based hematocrit prediction calibration model was succesfully set up and applied on both an independent instrument and an independent set of venous DBS samples.
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Affiliation(s)
- Laura Boffel
- Laboratory of Toxicology, Department of Bioanalysis, Faculty of Pharmaceutical Sciences, Ottergemsesteenweg 460, B-9000 Ghent, Belgium
| | - Liesl Heughebaert
- Laboratory of Toxicology, Department of Bioanalysis, Faculty of Pharmaceutical Sciences, Ottergemsesteenweg 460, B-9000 Ghent, Belgium
| | - Stijn Lambrecht
- Laboratory of Clinical Chemistry and Hematology, Ghent University Hospital, Corneel Heymanslaan 10, B-9000 Ghent, Belgium
| | - Marc Luginbühl
- CAMAG, Sonnenmattstrasse 11, CH-4132 Muttenz, Switzerland
| | - Christophe P. Stove
- Laboratory of Toxicology, Department of Bioanalysis, Faculty of Pharmaceutical Sciences, Ottergemsesteenweg 460, B-9000 Ghent, Belgium
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Volumetric absorptive microsampling (VAMS) for the quantification of ten kinase inhibitors and determination of their in vitro VAMS-to-plasma ratio. J Pharm Biomed Anal 2022; 211:114623. [DOI: 10.1016/j.jpba.2022.114623] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 01/24/2022] [Accepted: 01/25/2022] [Indexed: 11/24/2022]
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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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Aust AC, Benesova E, Vidova V, Coufalikova K, Smetanova S, Borek I, Janku P, Budinska E, Klanova J, Thon V, Spacil Z. Profiling Tryptophan Catabolites of Human Gut Microbiota and Acute-Phase Protein Levels in Neonatal Dried Blood Specimens. Front Microbiol 2021; 12:665743. [PMID: 34777268 PMCID: PMC8581761 DOI: 10.3389/fmicb.2021.665743] [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: 02/08/2021] [Accepted: 09/16/2021] [Indexed: 11/21/2022] Open
Abstract
National screening programs use dried blood specimens to detect metabolic disorders or aberrant protein functions that are not clinically evident in the neonatal period. Similarly, gut microbiota metabolites and immunological acute-phase proteins may reveal latent immune aberrations. Microbial metabolites interact with xenobiotic receptors (i.e., aryl hydrocarbon and pregnane-X) to maintain gastrointestinal tissue health, supported by acute-phase proteins, functioning as sensors of microbial immunomodulation and homeostasis. The delivery (vaginal or cesarean section) shapes the microbial colonization, which substantially modulates both the immune system’s response and mucosal homeostasis. This study profiled microbial metabolites of the kynurenine and tryptophan pathway and acute-phase proteins in 134 neonatal dried blood specimens. We newly established neonatal blood levels of microbial xenobiotic receptors ligands (i.e., indole-3-aldehyde, indole-3-butyric acid, and indole-3-acetamide) on the second day of life. Furthermore, we observed diverse microbial metabolic profiles in neonates born vaginally and via cesarean section, potentially due to microbial immunomodulatory influence. In summary, these findings suggest the supportive role of human gut microbiota in developing and maintaining immune system homeostasis.
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Affiliation(s)
| | - Eliska Benesova
- RECETOX, Faculty of Science, Masaryk University, Brno, Czechia
| | - Veronika Vidova
- RECETOX, Faculty of Science, Masaryk University, Brno, Czechia
| | | | - Sona Smetanova
- RECETOX, Faculty of Science, Masaryk University, Brno, Czechia
| | - Ivo Borek
- Department of Pediatrics, University Hospital Brno and Masaryk University Medical School, Brno, Czechia
| | - Petr Janku
- Department of Gynecology and Obstetrics, University Hospital Brno and Masaryk University Medical School, Brno, Czechia
| | - Eva Budinska
- RECETOX, Faculty of Science, Masaryk University, Brno, Czechia
| | - Jana Klanova
- RECETOX, Faculty of Science, Masaryk University, Brno, Czechia
| | - Vojtech Thon
- RECETOX, Faculty of Science, Masaryk University, Brno, Czechia
| | - Zdenek Spacil
- RECETOX, Faculty of Science, Masaryk University, Brno, Czechia
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43
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Itell HL, Weight H, Fish CS, Logue JK, Franko N, Wolf CR, McCulloch DJ, Galloway J, Matsen FA, Chu HY, Overbaugh J. SARS-CoV-2 Antibody Binding and Neutralization in Dried Blood Spot Eluates and Paired Plasma. Microbiol Spectr 2021; 9:e0129821. [PMID: 34668728 PMCID: PMC8528110 DOI: 10.1128/spectrum.01298-21] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 09/17/2021] [Indexed: 11/20/2022] Open
Abstract
Wide-scale assessment of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-specific antibodies is critical to understanding population seroprevalence, correlates of protection, and the longevity of vaccine-elicited responses. Most SARS-CoV-2 studies characterize antibody responses in plasma/sera. While reliable and broadly used, these samples pose several logistical restrictions, such as requiring venipuncture for collection and a cold chain for transportation and storage. Dried blood spots (DBS) overcome these barriers as they can be self-collected by fingerstick and mailed and stored at ambient temperature. Here, we evaluate the suitability of DBS for SARS-CoV-2 antibody assays by comparing several antibody responses between paired plasma and DBS from SARS-CoV-2 convalescent and vaccinated individuals. We found that DBS not only reflected plasma antibody binding by enzyme-linked immunosorbent assay (ELISA) and epitope profiles using phage display, but also yielded SARS-CoV-2 neutralization titers that highly correlated with paired plasma. Neutralization measurement was further streamlined by adapting assays to a high-throughput 384-well format. This study supports the adoption of DBS for numerous SARS-CoV-2 binding and neutralization assays. IMPORTANCE Plasma and sera isolated from venous blood represent conventional sample types used for the evaluation of SARS-CoV-2 antibody responses after infection or vaccination. However, collection of these samples is invasive and requires trained personnel and equipment for immediate processing. Once collected, plasma and sera must be stored and shipped at cold temperatures. To define the risk of emerging SARS-CoV-2 variants and the longevity of immune responses to natural infection and vaccination, it will be necessary to measure various antibody features in populations around the world, including in resource-limited areas. A sampling method that is compatible with these settings and is suitable for a variety of SARS-CoV-2 antibody assays is therefore needed to continue to understand and curb the COVID-19 pandemic.
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Affiliation(s)
- Hannah L. Itell
- Human Biology Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
- Molecular and Cellular Biology Graduate Program, University of Washington and Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Haidyn Weight
- Human Biology Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Carolyn S. Fish
- Human Biology Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Jennifer K. Logue
- Department of Medicine, University of Washington, Seattle, Washington, USA
| | - Nicholas Franko
- Department of Medicine, University of Washington, Seattle, Washington, USA
| | - Caitlin R. Wolf
- Department of Medicine, University of Washington, Seattle, Washington, USA
| | | | - Jared Galloway
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Frederick A. Matsen
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Helen Y. Chu
- Department of Medicine, University of Washington, Seattle, Washington, USA
| | - Julie Overbaugh
- Human Biology Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
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44
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Wood J, Jb Minter L, Tollefson TN, Bissell H, Bibus D, Ange-van Heugten K. Implications of Nutritional Management on Fatty Acid Profiles of Southern White Rhinoceroses ( Ceratotherium simum simum) Housed at Two Zoological Institutions. Animals (Basel) 2021; 11:3063. [PMID: 34827795 PMCID: PMC8614272 DOI: 10.3390/ani11113063] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 10/23/2021] [Accepted: 10/25/2021] [Indexed: 11/18/2022] Open
Abstract
Southern white rhinoceroses (Ceratotherium simum simum) are African megaherbivores that are considered near threatened by the International Union for the Conservation of Nature. The fatty acid circulating values of these animals have not been thoroughly investigated. Fatty acids are critical for immune, heart, skin, and reproductive health, and may have a significant impact on the management and conservation of this species. Published data on fatty acids in this species is limited to incomplete profiles with very few animals in managed environments. The objectives of this research were to provide novel fatty acid percentage profiles for managed healthy southern white rhinoceroses, as well as to provide comparisons between two zoological institutions with differences in diet and climate during two distinct pasture growth periods. Whole blood samples were collected as dried blood spots from six rhinoceroses at the North Carolina Zoo (NC Zoo) and five rhinoceroses at Busch Gardens Tampa (BGT) in the low growth period (February to April) of 2019 and during the high growth period (July to September) of 2020. Fatty acid results indicated numerous differences when comparing the institutions within the same growth period and when comparing the same institution between its two growth periods. Most noteworthy were the higher levels of α-linolenic acid (18:3w3) and total omega-3 fatty acids and the lower linoleic acid (18:2w6), total omega-6 fatty acids, and omega-6 to omega-3 ratio found in the BGT population in both growth periods. This study provides novel percentages of fatty acids in managed southern white rhinoceroses and data on how fatty acid profiles may be altered between two housing locations via dietary differences in hay type and quantity, pasture availability via season, and pellet inclusion levels.
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Affiliation(s)
- Jordan Wood
- Department of Animal Science, North Carolina State University, Raleigh, NC 27695, USA;
| | | | - Troy Neil Tollefson
- Mazuri® Exotic Animal Nutrition, PMI Nutrition, Land O’Lakes, Inc., St. Louis, MO 63144, USA;
| | - Heidi Bissell
- Busch Gardens Tampa Bay, 10165 McKinley Dr, Tampa, FL 33612, USA;
| | - Doug Bibus
- Lipid Technologies LLC, P.O. Box 216, Austin, MN 55912, USA;
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45
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Tallantyre EC, Vickaryous N, Anderson V, Asardag AN, Baker D, Bestwick J, Bramhall K, Chance R, Evangelou N, George K, Giovannoni G, Godkin A, Grant L, Harding KE, Hibbert A, Ingram G, Jones M, Kang AS, Loveless S, Moat SJ, Robertson NP, Schmierer K, Scurr MJ, Shah SN, Simmons J, Upcott M, Willis M, Jolles S, Dobson R. COVID-19 Vaccine Response in People with Multiple Sclerosis. Ann Neurol 2021; 91:89-100. [PMID: 34687063 PMCID: PMC8652739 DOI: 10.1002/ana.26251] [Citation(s) in RCA: 106] [Impact Index Per Article: 35.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 10/18/2021] [Accepted: 10/18/2021] [Indexed: 12/28/2022]
Abstract
Objective The purpose of this study was to investigate the effect of disease modifying therapies on immune response to severe acute respiratory syndrome‐coronavirus 2 (SARS‐CoV‐2) vaccines in people with multiple sclerosis (MS). Methods Four hundred seventy‐three people with MS provided one or more dried blood spot samples. Information about coronavirus disease 2019 (COVID‐19) and vaccine history, medical, and drug history were extracted from questionnaires and medical records. Dried blood spots were eluted and tested for antibodies to SARS‐CoV‐2. Antibody titers were partitioned into tertiles with people on no disease modifying therapy as a reference. We calculated the odds ratio of seroconversion (univariate logistic regression) and compared quantitative vaccine response (Kruskal Wallis) following the SARS‐CoV‐2 vaccine according to disease modifying therapy. We used regression modeling to explore the effect of vaccine timing, treatment duration, age, vaccine type, and lymphocyte count on vaccine response. Results Compared to no disease modifying therapy, the use of anti‐CD20 monoclonal antibodies (odds ratio = 0.03, 95% confidence interval [CI] = 0.01–0.06, p < 0.001) and fingolimod (odds ratio = 0.04; 95% CI = 0.01–0.12) were associated with lower seroconversion following the SARS‐CoV‐2 vaccine. All other drugs did not differ significantly from the untreated cohort. Both time since last anti‐CD20 treatment and total time on treatment were significantly associated with the response to the vaccination. The vaccine type significantly predicted seroconversion, but not in those on anti‐CD20 medications. Preliminary data on cellular T‐cell immunity showed 40% of seronegative subjects had measurable anti‐SARS‐CoV‐2 T cell responses. Interpretation Some disease modifying therapies convey risk of attenuated serological response to SARS‐CoV‐2 vaccination in people with MS. We provide recommendations for the practical management of this patient group. ANN NEUROL 20219999:n/a–n/a
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Affiliation(s)
- Emma C Tallantyre
- Division of Psychological Medicine and Clinical Neuroscience, School of Medicine, Cardiff University, Cardiff, UK.,Department of Neurology, University Hospital of Wales, Cardiff, UK
| | - Nicola Vickaryous
- Preventive Neurology Unit, Wolfson Institute of Population Health, Queen Mary University London, London, UK
| | - Valerie Anderson
- Division of Psychological Medicine and Clinical Neuroscience, School of Medicine, Cardiff University, Cardiff, UK
| | - Aliye Nazli Asardag
- Blizard Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - David Baker
- Blizard Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Jonathan Bestwick
- Preventive Neurology Unit, Wolfson Institute of Population Health, Queen Mary University London, London, UK
| | - Kath Bramhall
- Immunodeficiency Centre for Wales, University Hospital of Wales, Cardiff, UK
| | - Randy Chance
- Blizard Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK.,Centre for Oral Immunobiology and Regenerative Medicine, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Nikos Evangelou
- Department of Clinical Neurology, University of Nottingham, Nottingham, UK
| | - Katila George
- Preventive Neurology Unit, Wolfson Institute of Population Health, Queen Mary University London, London, UK
| | - Gavin Giovannoni
- Preventive Neurology Unit, Wolfson Institute of Population Health, Queen Mary University London, London, UK.,Blizard Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK.,Department of Neurology, Barts Health NHS Trust, London, UK
| | - Andrew Godkin
- Division of Infection and Immunity, School of Medicine, Cardiff University, Cardiff, UK.,Department of Gastroenterology and Hepatology, University Hospital of Wales, Cardiff, UK
| | - Leanne Grant
- Immunodeficiency Centre for Wales, University Hospital of Wales, Cardiff, UK
| | | | - Aimee Hibbert
- Department of Clinical Neurology, University of Nottingham, Nottingham, UK
| | - Gillian Ingram
- Department of Neurology, Morriston Hospital, Swansea, UK
| | - Meleri Jones
- Blizard Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Angray S Kang
- Blizard Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK.,Centre for Oral Immunobiology and Regenerative Medicine, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Samantha Loveless
- Division of Psychological Medicine and Clinical Neuroscience, School of Medicine, Cardiff University, Cardiff, UK
| | - Stuart J Moat
- Wales Newborn Screening Laboratory, Department of Medical Biochemistry, Immunology and Toxicology, University Hospital of Wales, Cardiff, UK.,School of Medicine, Cardiff University, Cardiff, UK
| | - Neil P Robertson
- Division of Psychological Medicine and Clinical Neuroscience, School of Medicine, Cardiff University, Cardiff, UK.,Department of Neurology, University Hospital of Wales, Cardiff, UK
| | - Klaus Schmierer
- Blizard Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK.,Department of Neurology, Barts Health NHS Trust, London, UK
| | - Martin J Scurr
- Division of Infection and Immunity, School of Medicine, Cardiff University, Cardiff, UK.,ImmunoServ Ltd., Cardiff, UK
| | - Sita Navin Shah
- Preventive Neurology Unit, Wolfson Institute of Population Health, Queen Mary University London, London, UK
| | - Jessica Simmons
- Division of Psychological Medicine and Clinical Neuroscience, School of Medicine, Cardiff University, Cardiff, UK
| | - Matthew Upcott
- Division of Psychological Medicine and Clinical Neuroscience, School of Medicine, Cardiff University, Cardiff, UK
| | - Mark Willis
- Department of Neurology, University Hospital of Wales, Cardiff, UK
| | - Stephen Jolles
- Immunodeficiency Centre for Wales, University Hospital of Wales, Cardiff, UK.,Division of Infection and Immunity, School of Medicine, Cardiff University, Cardiff, UK
| | - Ruth Dobson
- Preventive Neurology Unit, Wolfson Institute of Population Health, Queen Mary University London, London, UK.,Department of Neurology, Barts Health NHS Trust, London, UK
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46
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Christian LM, Cole SW, McDade T, Pachankis JE, Morgan E, Strahm AM, Kamp Dush CM. A biopsychosocial framework for understanding sexual and gender minority health: A call for action. Neurosci Biobehav Rev 2021; 129:107-116. [PMID: 34097981 PMCID: PMC8429206 DOI: 10.1016/j.neubiorev.2021.06.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 05/26/2021] [Accepted: 06/01/2021] [Indexed: 12/29/2022]
Abstract
The number of US adults identifying as lesbian, gay, bisexual, transgender, or a different sexual identity has doubled since 2008, and about 40 % of the sexual and gender minority population identify as people of color. Minority stress theory posits that sexual and gender minorities are at particular risk for stress via stigma and discrimination at the structural, interpersonal, and individual levels. This stress, in turn, elevates the risk of adverse health outcomes across several domains. However, there remains a conspicuously limited amount of research on the psychoneuroimmunology of stress among sexual and gender minorities. We developed the Biopsychosocial Minority Stress Framework which posits that sexual minority status leads to unique experiences of minority stress which results in adverse health behavioral factors, elevated psychological distress and sleep disturbance, and immune dysregulation. Moderators in the model include both individual differences and intersectional identities. There is a crucial need to understand the biological-psychological axis of stress among the increasingly visible sexual and gender minority population to increase their health, longevity, and quality of life.
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Affiliation(s)
- Lisa M Christian
- Department of Psychiatry & Behavioral Health, The Ohio State University Wexner Medical Center, Columbus, OH, USA; The Institute for Behavioral Medicine Research, The Ohio State University Wexner Medical Center, Columbus, OH, USA.
| | - Steve W Cole
- Department of Psychiatry & Biobehavioral Sciences and Medicine, UCLA School of Medicine, Los Angeles, CA, USA
| | - Thomas McDade
- Department of Anthropology, Northwestern University, Evanston, IL, USA; Institute for Policy Research, Northwestern University, Evanston, IL, USA; Child and Brain Development Program, Canadian Institute for Advanced Research, Toronto, ON, Canada
| | - John E Pachankis
- Yale School of Public Health, New Haven, CT, USA; Center for Interdisciplinary Research on AIDS, Yale School of Public Health, New Haven, CT, USA
| | - Ethan Morgan
- College of Nursing, The Ohio State University, Columbus, OH, USA
| | - Anna M Strahm
- Department of Psychiatry & Behavioral Health, The Ohio State University Wexner Medical Center, Columbus, OH, USA; The Institute for Behavioral Medicine Research, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Claire M Kamp Dush
- Minnesota Population Center, University of Minnesota, Minneapolis, MN, USA; Department of Sociology, University of Minnesota, Minneapolis, MN, USA
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47
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Investigation of Dried Blood Spot Cards for Fatty Acid Analysis Using Porcine Blood. Vet Med Int 2021; 2021:6624751. [PMID: 34497707 PMCID: PMC8419488 DOI: 10.1155/2021/6624751] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 04/30/2021] [Accepted: 08/17/2021] [Indexed: 11/17/2022] Open
Abstract
Fatty acids, especially omega-3 and omega-6 fatty acids, are important for reproductive and cardiovascular health in animals. While monitoring fatty acids is traditionally conducted using frozen blood fractions such as serum and plasma, advancements in analytical technology have developed a method of collecting microsamples of dried whole blood on Ahlstrom 226 grade filter paper that can provide information on long-term fatty acid status of animals. Blood samples were collected from five male pigs in both the traditional frozen method and on dried blood spot cards (DBS). The DBS samples were collected with untreated syringes and tubes, and approximately 320 μL of blood was placed on each card with approximately 80 μL per spot (4 spots). Statistical analysis was performed to compare the two sample groups to each other using the Mann-Whitney U-test and determine if DBS samples were similar to traditional whole blood samples. Of the 30 fatty acids and fatty acid groups with measurable concentrations, only four individual fatty acids, behenic acid, omega-3 docosapentaenoic acid, nervonic acid, and adrenic acid, had statistical differences. Most of these differences were minor and could be due to analytical errors or contamination. Comparisons between sample types found similar concentrations of key omega fatty acids and PUFAs and support the use of DBS collection as a less invasive method of blood collection and fatty acid analysis.
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48
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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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49
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Anderson M. How the COVID-19 pandemic is changing clinical trial conduct and driving innovation in bioanalysis. Bioanalysis 2021; 13:1195-1203. [PMID: 34275327 PMCID: PMC8288280 DOI: 10.4155/bio-2021-0107] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 07/01/2021] [Indexed: 01/04/2023] Open
Abstract
Thousands of clinical trials all over the world were stopped, disrupted or delayed while countries grappled to contain the pandemic and research resources were redeployed. The long-term effects of the turbulence caused by the pandemic have yet to be fully understood, but it should already be clear that the increased focus on participant needs and on the logistical challenges of current models are not likely to fade away quickly. This disruption is opening doors for rethinking traditional approaches to clinical trial conduct - including decentralizing site visits, introducing new methods of sample collection, rethinking matrix selection, reducing sample volumes and collaborating on device development. These approaches reduce participant burden while improving critical trial data.
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Affiliation(s)
- Melanie Anderson
- Pharmacokinetics, Pharmacodynamics & Drug Metabolism, Merck & Co., Inc., West Point, PA 19486, USA
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50
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Lee S, Chintalapudi K, Badu-Tawiah AK. Clinical Chemistry for Developing Countries: Mass Spectrometry. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2021; 14:437-465. [PMID: 33979544 PMCID: PMC8932337 DOI: 10.1146/annurev-anchem-091520-085936] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Early disease diagnosis is necessary to enable timely interventions. Implementation of this vital task in the developing world is challenging owing to limited resources. Diagnostic approaches developed for resource-limited settings have often involved colorimetric tests (based on immunoassays) due to their low cost. Unfortunately, the performance/sensitivity of such simplistic tests are often limited and significantly hinder opportunities for early disease detection. A new criterion for selecting diagnostic tests in low- and middle-income countries is proposed here that is based on performance-to-cost ratio. For example, modern mass spectrometry (MS) now involves analysis of the native sample in the open laboratory environment, enabling applications in many fields, including clinical research, forensic science, environmental analysis, and agriculture. In this critical review, we summarize recent developments in chemistry that enable MS to be applied effectively in developing countries. In particular, we argue that closed automated analytical systems may not offer the analytical flexibility needed in resource-limited settings. Alternative strategies proposed here have potential to be widely accepted in low- and middle-income countries through the utilization of the open-source ambient MS platform that enables microsampling techniques such as dried blood spot to be coupled with miniature mass spectrometers in a centralized analytical platform. Consequently, costs associated with sample handling and maintenance can be reduced by >50% of the total ownership cost, permitting analytical measurements to be operated at high performance-to-cost ratios in the developing world.
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Affiliation(s)
- Suji Lee
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, USA;
| | - Kavyasree Chintalapudi
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, USA;
| | - Abraham K Badu-Tawiah
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, USA;
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