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Shikha D, Chang YT, Goswami C. TRPM8 affects relative "cooling and heating" of subcellular organelles in microglia in a context-dependent manner. Int J Biochem Cell Biol 2024; 173:106615. [PMID: 38908471 DOI: 10.1016/j.biocel.2024.106615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 05/23/2024] [Accepted: 06/19/2024] [Indexed: 06/24/2024]
Abstract
Thermoregulation and thermal homeostasis at the cellular and subcellular organelle level are poorly understood events. In this work, we used BV2, a microglial cell line, and a series of thermo-sensitive subcellular organelle-specific probes to analyze the relative changes in the spatio-temporal temperatures of different subcellular organelles, both qualitatively and quantitatively. These methodologies allowed us to understand the thermal relationship of different subcellular organelles also. We modulated BV2 cells by pharmacological application of activator or inhibitor of TRPM8 ion channel (a cold-sensitive ion channel) and/or by treating the cells with LPS, a molecule that induces pathogen-associated molecular patterns (PAMPs) signaling. We demonstrate that the temperatures of individual organelles remain variable within a physiological range, yet vary in different conditions. We also demonstrate that treating BV2 cells by TRPM8 modulators and/or LPS alters the organelle temperatures in a specific and context-dependent manner. We show that TRPM8 modulation and/or LPS can alter the relationship of mitochondrial membrane potential to mitochondrial temperature. Our work suggests that mitochondrial temperature positively influences ER temperature and negatively influences Golgi temperature. Golgi temperature positively influences membrane temperature. This understanding of thermal relationships may be crucial for dissecting cellular structures, function, and stress signaling and may be relevant for different diseases.
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Affiliation(s)
- Deep Shikha
- School of Biological Sciences, National Institute of Science Education and Research, An OCC of Homi Bhabha National Institute, Khordha, Jatni, Odisha 752050, India
| | - Young-Tae Chang
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Chandan Goswami
- School of Biological Sciences, National Institute of Science Education and Research, An OCC of Homi Bhabha National Institute, Khordha, Jatni, Odisha 752050, India.
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Ducatez F, Pilon C, Ferey J, Marret S, Bekri S, Tebani A. Evaluation of dried-blood spots and a hematocrit-independent procedure in lysosomal diseases screening using multiplexed tandem mass spectrometry assays. Clin Chim Acta 2023; 542:117278. [PMID: 36871662 DOI: 10.1016/j.cca.2023.117278] [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: 01/20/2023] [Revised: 02/28/2023] [Accepted: 02/28/2023] [Indexed: 03/06/2023]
Abstract
BACKGROUND Dried blood spots (DBS) are widely used as a non-invasive sampling method, especially in newborn screening (NBS). Despite its numerous advantages, conventional DBS might be limited by the hematocrit effect when analyzing a punch, depending on its position in the blood spot. This effect could be avoided using hematocrit-independent sampling devices such as the hemaPEN®. This device collects blood through integrated microcapillaries, and a fixed blood volume is deposited on a pre-punched paper disc. NBS programs are increasingly poised to include lysosomal disorders, given the availability of treatments that improve clinical outcomes if detected early. In this study, the effect of hematocrit and punch position in the DBS on the assay of 6 lysosomal enzymes was evaluated on 3 mm discs pre-punched in hemaPEN® devices compared to 3 mm punches from the PerkinElmer 226 DBS. METHODS The enzyme activities were measured by multiplexed tandem mass spectrometry coupled to ultra-high performance liquid chromatography. Three hematocrit levels (23%, 35%, and 50%) and punching positions (center, intermediary, and border) were tested. Three replicates have been performed for each condition. A multivariate approach has been used along with a univariate method to assess the effect of the experimental design on each enzyme activity. RESULTS Hematocrit, punch position, and whole blood sampling method do not affect the assessment of enzyme activity using the NeoLSD® assay. CONCLUSION The results obtained from conventional DBS and the volumetric device HemaPEN® are comparable. These results underline the reliability of DBS for this test.
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Affiliation(s)
- Franklin Ducatez
- Normandie Univ, UNIROUEN, INSERM U1245, CHU Rouen, Department of Metabolic Biochemistry, 76000 Rouen, France; Normandie Univ, UNIROUEN, INSERM U1245, CHU Rouen, Department of Neonatal Pediatrics, Intensive Care, and Neuropediatrics, 76000 Rouen, France
| | - Carine Pilon
- Normandie Univ, UNIROUEN, INSERM U1245, CHU Rouen, Department of Metabolic Biochemistry, 76000 Rouen, France
| | - Justine Ferey
- Normandie Univ, UNIROUEN, INSERM U1245, CHU Rouen, Department of Metabolic Biochemistry, 76000 Rouen, France
| | - Stéphane Marret
- Normandie Univ, UNIROUEN, INSERM U1245, CHU Rouen, Department of Neonatal Pediatrics, Intensive Care, and Neuropediatrics, 76000 Rouen, France
| | - Soumeya Bekri
- Normandie Univ, UNIROUEN, INSERM U1245, CHU Rouen, Department of Metabolic Biochemistry, 76000 Rouen, France
| | - Abdellah Tebani
- Normandie Univ, UNIROUEN, INSERM U1245, CHU Rouen, Department of Metabolic Biochemistry, 76000 Rouen, France.
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3
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Pasta A, Borro P, Cremonini AL, Formisano E, Tozzi G, Cecchi S, Fresa R, Labanca S, Djahandideh A, Sukkar SG, Picciotto A, Pisciotta L. Effect of a common missense variant in LIPA gene on fatty liver disease and lipid phenotype: New perspectives from a single-center observational study. Pharmacol Res Perspect 2021; 9:e00820. [PMID: 34476902 PMCID: PMC8413903 DOI: 10.1002/prp2.820] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Revised: 05/24/2021] [Accepted: 05/25/2021] [Indexed: 12/15/2022] Open
Abstract
Lysosomal acid lipase deficiency (LAL-D) is an autosomal recessive disease characterized by hypoalphalipoproteinemia, mixed hyperlipemia, and fatty liver (FL) due to mutations in LIPAse A, lysosomal acid type (LIPA) gene. The rs1051338 single-nucleotide polymorphism (SNP) in LIPA gene, in vitro, could adversely affect the LAL activity (LAL-A). Nonalcoholic fatty liver disease (NAFLD) is often associated with metabolic syndrome, and the diagnosis requires the exclusion of excess of alcohol intake and other causes of hepatic disease. The aim of the study was to evaluate the impact of rs1051338 rare allele on lipid phenotype, severity of FL, and LAL-A in patients suffering from dyslipidemia associated with NAFLD. We selected 74 subjects with hypoalphalipoproteinemia or mixed hyperlipemia and evaluated transaminases, liver assessment with controlled attenuation parameter (CAP), LAL-A, rs1051338 SNP genotype. The presence of rare allele caused higher levels of triglycerides and hepatic transaminase and lower levels of high-density lipoprotein cholesterol (HDL-C). Multivariate analysis highlighted independent association between rare allele and FL severity in subjects with NAFLD. The rs1051338 SNP may modulate FL severity and atherogenic dyslipidemia in patients suffering from NAFLD.
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Affiliation(s)
- Andrea Pasta
- Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Paolo Borro
- Gastroenterology Unit, Department of Internal Medicine, IRCCS Ospedale Policlinico San Martino, University of Genoa, Genoa, Italy
| | - Anna Laura Cremonini
- Dietetics and Clinical Nutrition Unit, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Elena Formisano
- Nutritional Unit ASL-1 Imperiese, Giovanni Borea Civil Hospital, Sanremo, Italy
| | - Giulia Tozzi
- Division of Metabolism and Research Unit of Metabolic Biochemistry, Department of Pediatrics, IRCCS Bambino Gesù Children's Hospital, Rome, Italy
| | - Stefano Cecchi
- Hepatology, Gastroenterology and Nutrition Unit, IRCCS "Bambino Gesù" Children's Hospital, Rome, Italy
| | - Raffaele Fresa
- Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Sara Labanca
- Gastroenterology Unit, Department of Internal Medicine, IRCCS Ospedale Policlinico San Martino, University of Genoa, Genoa, Italy
| | - Afscin Djahandideh
- Gastroenterology Unit, Department of Internal Medicine, IRCCS Ospedale Policlinico San Martino, University of Genoa, Genoa, Italy
| | - Samir Giuseppe Sukkar
- Dietetics and Clinical Nutrition Unit, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Antonino Picciotto
- Department of Internal Medicine, University of Genoa, Genoa, Italy
- Gastroenterology Unit, Department of Internal Medicine, IRCCS Ospedale Policlinico San Martino, University of Genoa, Genoa, Italy
| | - Livia Pisciotta
- Department of Internal Medicine, University of Genoa, Genoa, Italy
- Dietetics and Clinical Nutrition Unit, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
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Miyamoto T, Iino M, Komorizono Y, Kiguchi T, Furukawa N, Otsuka M, Sawada S, Okamoto Y, Yamauchi K, Muto T, Fujisaki T, Tsurumi H, Nakamura K. Screening for Gaucher Disease Using Dried Blood Spot Tests: A Japanese Multicenter, Cross-sectional Survey. Intern Med 2021; 60:699-707. [PMID: 33642560 PMCID: PMC7990619 DOI: 10.2169/internalmedicine.5064-20] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 08/25/2020] [Indexed: 01/10/2023] Open
Abstract
Objective For patients with Gaucher disease (GD), a rare, inherited lysosomal storage disease, obtaining a definitive diagnosis is currently time-consuming and costly. A simplified screening method to measure the glucocerebrosidase (GBA) activity using dried blood spots (DBS) on filter paper has recently been developed. Using this newly developed screening method, we evaluated real-world GD screening in patients suspected of having GD. Methods This multicenter, cross-sectional, observational study with a diagnostic intervention component evaluated real-world screening in patients suspected of having GD based on their clinical symptoms and a platelet count <120,000/μL. The endpoint was the number of patients with low GBA activity determined using DBS. Results In 994 patients who underwent initial DBS screening, 77 had low GBA activity. The assay was not repeated in 1 patient who was diagnosed as having a high possibility of GD due to clinical symptoms, and a further 21 patients completed the study without undergoing the second assay. Of the remaining 55 patients who had 2 DBS assays performed, 11 had a low GBA activity in both assays. Overall, DBS screening identified 12 (1.2%) patients with a low GBA activity, a proportion consistent with prior screening studies. Conclusion These results suggest that the simplified DBS method was less burdensome to patients, was easily utilized by many physicians, and could be a useful first-tier screening assay for GD prior to initiating burdensome genetic testing.
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Affiliation(s)
- Toshihiro Miyamoto
- Department of Medicine and Bioregulatory Science, Kyushu University, Japan
| | - Masaki Iino
- Department of Hematology, Yamanashi Prefectural Central Hospital, Japan
| | | | - Toru Kiguchi
- Department of Hematology, Chugoku Central Hospital, Japan
| | | | - Maki Otsuka
- Department of Hematology, National Hospital Organization Kagoshima Medical Center, Japan
| | - Shohei Sawada
- Department of Dialysis and Neurology, Ijinkai Takeda General Hospital, Japan
| | | | | | - Toshitaka Muto
- Department of Hematology, National Hospital Organization Kokura Medical Center, Japan
| | - Tomoaki Fujisaki
- Department of Internal Medicine, Matsuyama Red Cross Hospital, Japan
| | - Hisashi Tsurumi
- Department of Hematology, Matsunami General Hospital and Gifu University Hospital, Japan
| | - Kimitoshi Nakamura
- Division of Pediatrics, Graduate School of Medical Science, Kumamoto University, Japan
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Motta I, Consonni D, Stroppiano M, Benedetto C, Cassinerio E, Tappino B, Ranalli P, Borin L, Facchini L, Patriarca A, Barcellini W, Lanza F, Filocamo M, Cappellini MD. Predicting the probability of Gaucher disease in subjects with splenomegaly and thrombocytopenia. Sci Rep 2021; 11:2594. [PMID: 33510429 PMCID: PMC7843616 DOI: 10.1038/s41598-021-82296-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 01/14/2021] [Indexed: 12/11/2022] Open
Abstract
Hematologists are frequently involved in the diagnostic pathway of Gaucher disease type 1 (GD1) patients since they present several hematological signs. However, GD1 is mainly underdiagnosed because of a lack of awareness. In this multicenter study, we combine the use of a diagnostic algorithm with a simple test (β-glucosidase activity on Dried Blood Spot) in order to facilitate the diagnosis in a population presenting to the hematologist with splenomegaly and/or thrombocytopenia associated with other hematological signs. In this high-risk population, the prevalence of GD1 is 3.3%. We propose an equation that predicts the probability of having GD1 according to three parameters that are routinely evaluated: platelet count, ferritin, and transferrin saturation.
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Affiliation(s)
- Irene Motta
- General Medicine Unit, Rare Diseases Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Via F. Sforza, 35, 20122, Milan, Italy.,Department of Clinical Sciences and Community Health, Università Degli Studi Di Milano, Milan, Italy
| | - Dario Consonni
- Epidemiology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Marina Stroppiano
- Laboratorio Di Genetica Molecolare E Biobanche, Istituto G. Gaslini, Genoa, Italy
| | | | - Elena Cassinerio
- General Medicine Unit, Rare Diseases Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Via F. Sforza, 35, 20122, Milan, Italy
| | - Barbara Tappino
- Laboratorio Di Genetica Molecolare E Biobanche, Istituto G. Gaslini, Genoa, Italy
| | - Paola Ranalli
- Hemophilia and Rare Blood Diseases Centre, Oncology and Hematology Department, S. Spirito Hospital, Pescara, Italy
| | - Lorenza Borin
- Hematology Division, San Gerardo Hospital, Monza, Italy
| | - Luca Facchini
- Division of Hematology, Azienda USL-IRCCS Di Reggio Emilia, Reggio Emilia, Italy
| | - Andrea Patriarca
- Division of Hematology, Department of Translational Medicine, University of Eastern Piedmont and Ospedale Maggiore Della Carità, Novara, Italy
| | - Wilma Barcellini
- Hematology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Federica Lanza
- Laboratorio Di Genetica Molecolare E Biobanche, Istituto G. Gaslini, Genoa, Italy
| | - Mirella Filocamo
- Laboratorio Di Genetica Molecolare E Biobanche, Istituto G. Gaslini, Genoa, Italy
| | - Maria Domenica Cappellini
- General Medicine Unit, Rare Diseases Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Via F. Sforza, 35, 20122, Milan, Italy. .,Department of Clinical Sciences and Community Health, Università Degli Studi Di Milano, Milan, Italy.
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Alonso-Fernández JR, López JF. Review and Proposal of Alternative Technologies for Comprehensive and Reliable Newborn Screening Using Paper Borne Urine Samples for Lysosomal Storage Disorders: Glycosphingolipid Disorders. JOURNAL OF INBORN ERRORS OF METABOLISM AND SCREENING 2021. [DOI: 10.1590/2326-4594-jiems-2020-0011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Oguni T, Tomatsu S, Tanaka M, Orii K, Fukao T, Watanabe J, Fukuda S, Notsu Y, Vu DC, Can TBN, Nagai A, Yamaguchi S, Taketani T, Gelb MH, Kobayashi H. Validation of Liquid Chromatography-Tandem Mass Spectrometry-Based 5-Plex Assay for Mucopolysaccharidoses. Int J Mol Sci 2020; 21:E2025. [PMID: 32188102 PMCID: PMC7139616 DOI: 10.3390/ijms21062025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 03/09/2020] [Accepted: 03/12/2020] [Indexed: 11/16/2022] Open
Abstract
Mucopolysaccharidoses (MPSs) are rare lysosomal storage diseases caused by the accumulation of undegraded glycosaminoglycans in cells and tissues. The effectiveness of early intervention for MPS has been reported. Multiple-assay formats using tandem mass spectrometry have been developed. Here, we developed a method for simultaneous preparation and better measurement of the activities of five enzymes involved in MPSs, i.e., MPS I, MPS II, MPS IIIB, MPS IVA, and MPS VI, which were validated using 672 dried blood spot samples obtained from healthy newborns and 23 patients with MPS. The mean values of the enzyme activities and standard deviations in controls were as follows: α-iduronidase (IDUA), 4.19 ± 1.53 µM/h; iduronate-2-sulfatase (I2S), 8.39 ± 2.82 µM/h; N-acetyl-α-glucosaminidase (NAGLU), 1.96 ± 0.57 µM/h; N-acetylgalactosamine-6-sulfatase (GALNS), 0.50 ± 0.20 µM/h; and N-acetylgalactosamine-4-sulfatase (ARSB), 2.64 ± 1.01 µM/h. All patients displayed absent or low enzyme activity. In MPS I, IIIB, and VI, each patient group was clearly separated from controls, whereas there was some overlap between the control and patient groups in MPS II and IVA, suggesting the occurrence of pseudo-deficiencies. Thus, we established a multiplex assay for newborn screening using liquid chromatography tandem mass spectrometry, allowing simultaneous pretreatment and measurement of five enzymes relevant to MPSs.
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Affiliation(s)
- Tsubasa Oguni
- Clinical Laboratory Division, Shimane University Hospital, Izumo 693-8501, Japan; (T.O.); (Y.N.)
| | - Shunji Tomatsu
- Department of Pediatrics, Shimane University Faculty of Medicine, Izumo 693-8501, Japan; (S.T.); (S.F.); (S.Y.); (T.T.)
- Nemours/Alfred I. DuPont Children’s Hospital, Wilmington, DE 19803, USA
| | - Misa Tanaka
- Shimadzu Corporation, Kyoto 604-8442, Japan; (M.T.); (J.W.)
| | - Kenji Orii
- Department of Pediatrics, Graduate School of Medicine, Gifu University, Gifu 501-1193, Japan; (K.O.); (T.F.)
| | - Toshiyuki Fukao
- Department of Pediatrics, Graduate School of Medicine, Gifu University, Gifu 501-1193, Japan; (K.O.); (T.F.)
| | - Jun Watanabe
- Shimadzu Corporation, Kyoto 604-8442, Japan; (M.T.); (J.W.)
| | - Seiji Fukuda
- Department of Pediatrics, Shimane University Faculty of Medicine, Izumo 693-8501, Japan; (S.T.); (S.F.); (S.Y.); (T.T.)
| | - Yoshitomo Notsu
- Clinical Laboratory Division, Shimane University Hospital, Izumo 693-8501, Japan; (T.O.); (Y.N.)
| | - Dung Chi Vu
- Department of Medical Genetics and Metabolism; Center for rare disease and Newborn Screening, National Children’s Hospital, Hanoi 18/879, Vietnam; (D.C.V.); (T.B.N.C.)
| | - Thi Bich Ngoc Can
- Department of Medical Genetics and Metabolism; Center for rare disease and Newborn Screening, National Children’s Hospital, Hanoi 18/879, Vietnam; (D.C.V.); (T.B.N.C.)
| | - Atsushi Nagai
- Department of Neurology, Shimane University Faculty of Medicine, Izumo 693-8501, Japan;
| | - Seiji Yamaguchi
- Department of Pediatrics, Shimane University Faculty of Medicine, Izumo 693-8501, Japan; (S.T.); (S.F.); (S.Y.); (T.T.)
| | - Takeshi Taketani
- Department of Pediatrics, Shimane University Faculty of Medicine, Izumo 693-8501, Japan; (S.T.); (S.F.); (S.Y.); (T.T.)
| | - Michael H. Gelb
- Departments of Chemistry and Biochemistry, University of Washington, Seattle, WD 98195, USA;
| | - Hironori Kobayashi
- Department of Pediatrics, Shimane University Faculty of Medicine, Izumo 693-8501, Japan; (S.T.); (S.F.); (S.Y.); (T.T.)
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Lim MD. Dried Blood Spots for Global Health Diagnostics and Surveillance: Opportunities and Challenges. Am J Trop Med Hyg 2018; 99:256-265. [PMID: 29968557 PMCID: PMC6090344 DOI: 10.4269/ajtmh.17-0889] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Accepted: 05/02/2018] [Indexed: 12/28/2022] Open
Abstract
There is increasing interest in using dried blood spot (DBS) cards to extend the reach of global health and disease surveillance programs to hard-to-reach populations. Conceptually, DBS offers a cost-effective solution for multiple use cases by simplifying logistics for collecting, preserving, and transporting blood specimens in settings with minimal infrastructure. This review describes methods to determine both the reliability of DBS-based bioanalysis for a defined use case and the optimal conditions that minimize pre-analytical sources of data variability. Examples by the newborn screening, drug development, and global health communities are provided in this review of published literature. Sources of variability are linked in most cases, emphasizing the importance of field-to-laboratory standard operating procedures that are evidence based and consider both stability and efficiency of recovery for a specified analyte in defining the type of DBS card, accessories, handling procedures, and storage conditions. Also included in this review are reports where DBS was determined to not be feasible because of technology limitations or physiological properties of a targeted analyte.
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Affiliation(s)
- Mark D. Lim
- Global Health Division, Bill & Melinda Gates Foundation, Seattle, Washington
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9
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Agbozo EY, Dumashie E, Boakye DA, de Souza DK. Effects of lyophilization and storage temperature on Wuchereria bancrofti antigen sensitivity and stability. BMC Res Notes 2018; 11:454. [PMID: 29996898 PMCID: PMC6042357 DOI: 10.1186/s13104-018-3586-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 07/07/2018] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVE Antigen-based rapid diagnostic tests for Lymphatic filariasis (LF) do not come with external quality control (QC) materials, and research and disease control programmes rely on stored positive samples. This study was undertaken to evaluate the use of lyophilized Wuchereria bancrofti antigen positive plasma samples to serve as QC materials for LF diagnostic tests. 10 well characterized W. bancrofti positive samples were lyophilized and stored at 4, 28 and 40 °C. The samples were evaluated using the Alere Filariasis Test Strips before lyophilization, and after 1 and 3 months of storage. The sensitivity and stability of the lyophilized samples were evaluated. RESULTS The results revealed a loss of sensitivity and stability with increasing temperature and duration of storage. The results are further discussed in terms of the use of dried blood spot (DBS) in diagnostic studies on LF, and the need for thoughtful DBS preparation and storage.
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Affiliation(s)
- Edem Y. Agbozo
- Accra Technical University, Accra, Ghana
- Department of Parasitology, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
| | - Edward Dumashie
- Department of Parasitology, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
| | - Daniel A. Boakye
- Department of Parasitology, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
| | - Dziedzom K. de Souza
- Department of Parasitology, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
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10
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Piraud M, Pettazzoni M, Lavoie P, Ruet S, Pagan C, Cheillan D, Latour P, Vianey-Saban C, Auray-Blais C, Froissart R. Contribution of tandem mass spectrometry to the diagnosis of lysosomal storage disorders. J Inherit Metab Dis 2018; 41:457-477. [PMID: 29556840 DOI: 10.1007/s10545-017-0126-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 11/25/2017] [Accepted: 12/11/2017] [Indexed: 02/07/2023]
Abstract
Tandem mass spectrometry (MS/MS) is a highly sensitive and specific technique. Thanks to the development of triple quadrupole analyzers, it is becoming more widely used in laboratories working in the field of inborn errors of metabolism. We review here the state of the art of this technique applied to the diagnosis of lysosomal storage disorders (LSDs) and how MS/MS has changed the diagnostic rationale in recent years. This fine technology brings more sensitive, specific, and reliable methods than the previous biochemical ones for the analysis of urinary glycosaminoglycans, oligosaccharides, and sialic acid. In sphingolipidoses, the quantification of urinary sphingolipids (globotriaosylceramide, sulfatides) is possible. The measurement of new plasmatic biomarkers such as oxysterols, bile acids, and lysosphingolipids allows the screening of many sphingolipidoses and related disorders (Niemann-Pick type C), replacing tedious biochemical techniques. Applied to amniotic fluid, a more reliable prenatal diagnosis or screening of LSDs is now available for fetuses presenting with antenatal manifestations. Applied to enzyme measurements, it allows high throughput assays for the screening of large populations, even newborn screening. The advent of this new method can modify the diagnostic rationale behind LSDs.
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Affiliation(s)
- Monique Piraud
- Unité Maladies Héréditaires du Métabolisme, Service de Biochimie et Biologie Moléculaire Grand Est, Centre de Biologie et de Pathologie Est, Hospices Civils de Lyon, 59 boulevard Pinel, 69677, Bron cedex, France.
| | - Magali Pettazzoni
- Unité Maladies Héréditaires du Métabolisme, Service de Biochimie et Biologie Moléculaire Grand Est, Centre de Biologie et de Pathologie Est, Hospices Civils de Lyon, 59 boulevard Pinel, 69677, Bron cedex, France
| | - Pamela Lavoie
- Service de Génétique Médicale, Département de Pédiatrie, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Séverine Ruet
- Unité Maladies Héréditaires du Métabolisme, Service de Biochimie et Biologie Moléculaire Grand Est, Centre de Biologie et de Pathologie Est, Hospices Civils de Lyon, 59 boulevard Pinel, 69677, Bron cedex, France
| | - Cécile Pagan
- Unité Maladies Héréditaires du Métabolisme, Service de Biochimie et Biologie Moléculaire Grand Est, Centre de Biologie et de Pathologie Est, Hospices Civils de Lyon, 59 boulevard Pinel, 69677, Bron cedex, France
| | - David Cheillan
- Unité Maladies Héréditaires du Métabolisme, Service de Biochimie et Biologie Moléculaire Grand Est, Centre de Biologie et de Pathologie Est, Hospices Civils de Lyon, 59 boulevard Pinel, 69677, Bron cedex, France
| | - Philippe Latour
- Unité de Neurogénétique Moléculaire, Service de Biochimie et Biologie Moléculaire Grand Est, Centre de Biologie et de Pathologie Est, Hospices Civils de Lyon, Lyon, France
| | - Christine Vianey-Saban
- Unité Maladies Héréditaires du Métabolisme, Service de Biochimie et Biologie Moléculaire Grand Est, Centre de Biologie et de Pathologie Est, Hospices Civils de Lyon, 59 boulevard Pinel, 69677, Bron cedex, France
| | - Christiane Auray-Blais
- Service de Génétique Médicale, Département de Pédiatrie, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Roseline Froissart
- Unité Maladies Héréditaires du Métabolisme, Service de Biochimie et Biologie Moléculaire Grand Est, Centre de Biologie et de Pathologie Est, Hospices Civils de Lyon, 59 boulevard Pinel, 69677, Bron cedex, France
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Supriya M, De T, Christopher R. Effect of temperature on lysosomal enzyme activity during preparation and storage of dried blood spots. J Clin Lab Anal 2017; 32. [PMID: 28345760 DOI: 10.1002/jcla.22220] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 02/25/2017] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND The use of dried blood spots (DBS) for the assay of lysosomal enzymes has facilitated the implementation of pilot studies for newborn screening for lysosomal storage disorders in various developed countries. The aim of the study was to determine the influence of ambient temperature during DBS preparation and storage on lysosomal enzyme activity in a developing, tropical country. METHODS Blood samples from 12 healthy subjects collected on a S&S 903 filter paper were dried and stored at different temperatures for different periods of time. Activities of five lysosomal enzymes (acid α-glucosidase, acid α-galactosidase, acid β-glucocerebrosidase, acid sphingomyelinase, and galactocerebrosidase) were determined by tandem mass spectrometric and fluorimetric (acid α-glucosidase and acid β-glucocerebrosidase only) assays. RESULTS The mean activities of all five enzymes decreased significantly when DBS was dried at temperatures above 24°C (P<.0001). DBS stored at 4°C, 24°C, 30°C, 37°C, and 45°C for 10 days and more, also showed significant reduction in activities of all five enzymes (P<.0001). CONCLUSION The results highlight the importance of maintaining the correct ambient temperature during DBS preparation and storage to avoid false positive results when screening for lysosomal storage disorders.
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Affiliation(s)
- Manjunath Supriya
- Department of Neurochemistry, National Institute of Mental Health and Neuro Sciences, Bangalore, India
| | - Tanima De
- Department of Neurochemistry, National Institute of Mental Health and Neuro Sciences, Bangalore, India
| | - Rita Christopher
- Department of Neurochemistry, National Institute of Mental Health and Neuro Sciences, Bangalore, India
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