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Troisi J, Cavallo P, Colucci A, Pierri L, Scala G, Symes S, Jones C, Richards S. Metabolomics in genetic testing. Adv Clin Chem 2019; 94:85-153. [PMID: 31952575 DOI: 10.1016/bs.acc.2019.07.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Metabolomics is an intriguing field of study providing a new readout of the biochemical activities taking place at the moment of sampling within a subject's biofluid or tissue. Metabolite concentrations are influenced by several factors including disease, environment, drugs, diet and, importantly, genetics. Metabolomics signatures, which describe a subject's phenotype, are useful for disease diagnosis and prognosis, as well as for predicting and monitoring the effectiveness of treatments. Metabolomics is conventionally divided into targeted (i.e., the quantitative analysis of a predetermined group of metabolites) and untargeted studies (i.e., analysis of the complete set of small-molecule metabolites contained in a biofluid without a pre-imposed metabolites-selection). Both approaches have demonstrated high value in the investigation and understanding of several monogenic and multigenic conditions. Due to low costs per sample and relatively short analysis times, metabolomics can be a useful and robust complement to genetic sequencing.
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Affiliation(s)
- Jacopo Troisi
- Department of Medicine, Surgery and Dentistry, "Scuola Medica Salernitana", University of Salerno, Baronissi, Italy; Theoreo srl, Montecorvino Pugliano, Italy; European Biomedical Research Institute of Salerno (EBRIS), Salerno, Italy.
| | - Pierpaolo Cavallo
- Department of Physics, University of Salerno, Fisciano, Italy; Istituto Sistemi Complessi del Consiglio Nazionale delle Ricerche (ISC-CNR), Roma, Italy
| | - Angelo Colucci
- Department of Medicine, Surgery and Dentistry, "Scuola Medica Salernitana", University of Salerno, Baronissi, Italy
| | - Luca Pierri
- Department of Translational Medical Sciences, Section of Pediatrics, University of Naples Federico II, Naples, Italy
| | | | - Steven Symes
- Department of Chemistry and Physics, University of Tennessee at Chattanooga, Chattanooga, TN, United States; Department of Obstetrics and Gynecology, University of Tennessee College of Medicine, Chattanooga, TN, United States
| | - Carter Jones
- Department of Biology, Geology and Environmental Sciences, University of Tennessee at Chattanooga, Chattanooga, TN, United States
| | - Sean Richards
- Department of Obstetrics and Gynecology, University of Tennessee College of Medicine, Chattanooga, TN, United States; Department of Biology, Geology and Environmental Sciences, University of Tennessee at Chattanooga, Chattanooga, TN, United States
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Musharraf SG, Iqbal A, Ansari SH, Parveen S, Khan IA, Siddiqui AJ. β-Thalassemia Patients Revealed a Significant Change of Untargeted Metabolites in Comparison to Healthy Individuals. Sci Rep 2017; 7:42249. [PMID: 28198811 PMCID: PMC5304209 DOI: 10.1038/srep42249] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Accepted: 01/08/2017] [Indexed: 11/12/2022] Open
Abstract
β-Thalassemia is one of the most prevalent forms of congenital blood disorders characterized by reduced hemoglobin levels with severe complications, affecting all dimensions of life. The mechanisms underlying the phenotypic heterogeneity of β-thalassemia are still poorly understood. We aimed to work over metabolite biomarkers to improve mechanistic understanding of phenotypic heterogeneity and hence better management of disorder at different levels. Untargeted serum metabolites were analyzed after protein precipitation and SPE (solid phase extraction) from 100 β-thalassemia patients and 61 healthy controls using GC-MS. 40 metabolites were identified having a significance difference between these two groups at probability of 0.05 and fold change >1.5. Out of these 40 metabolites, 17 were up-regulated while 23 were down-regulated. PCA and PLS-DA model was also created that revealed a fine separation with a sensitivity of 70% and specificity of 100% on external validation of samples. Metabolic pathway analysis revealed alteration in multiple pathways including glycolysis, pyruvate, propanoate, glycerophospholipid, galactose, fatty acid, starch and sucrose metabolism along with fatty acid elongation in mitochondria, glycerolipid, glyoxylate and dicarboxylate metabolism pointing towards the shift of metabolism in β-thalassemia patients in comparison to healthy individuals.
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Affiliation(s)
- Syed Ghulam Musharraf
- H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi-75270, Pakistan.,Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi-75270, Pakistan
| | - Ayesha Iqbal
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi-75270, Pakistan
| | - Saqib Hussain Ansari
- Department of Pediatric Hematology &Molecular Medicine, National Institute of Blood Diseases and Bone Marrow Transplantation, Karachi-75300, Pakistan
| | - Sadia Parveen
- Department of Pediatric Hematology &Molecular Medicine, National Institute of Blood Diseases and Bone Marrow Transplantation, Karachi-75300, Pakistan
| | - Ishtiaq Ahmad Khan
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi-75270, Pakistan
| | - Amna Jabbar Siddiqui
- H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi-75270, Pakistan
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Elsayh KI, Mohammed WS, Zahran AM, Saad K. Leukocytes apoptosis and adipocytokines in children with beta thalassemia major. Clin Exp Med 2016; 16:345-50. [PMID: 26052040 DOI: 10.1007/s10238-015-0361-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Accepted: 05/14/2015] [Indexed: 02/05/2023]
Abstract
β-Thalassemia is a significant public health problem in Egypt. Infectious complications represent the second most common cause of mortality and the major cause of morbidity in β-thalassemia major (BTM). The increased susceptibility of these patients to infectious diseases has been attributed to the abnormalities of the immune system, which is evident by systemic inflammation and immune deficiency. In a case control study, 35 patients with BTM were compared with 30 sex- and age-matched children who served as controls. Serum ferritin, high-sensitive CRP (hsCRP), leptin and adiponectin levels were determined in all subjects. Apoptosis of neutrophils and lymphocytes was measured by the Annexin V-fluoroisothiocyanate binding assay. Serum leptin was significantly lower in patients when compared to controls. In contrast, adiponectin and hsCRP levels were significantly higher in the patients than the controls. Positive correlation was found between adiponectin and hsCRP. BTM patients had significantly higher total leukocytes, neutrophils and lymphocytes compared with controls. BTM children exhibited a significantly increased apoptosis in T-lymphocytes; however, there was no significant difference in the percentage of apoptosis of B-lymphocytes and neutrophils between the patients and the controls. There was a significant negative correlation between serum leptin and the percentage of apoptotic T-lymphocytes. Our BTM patients had a high percentage of apoptotic T-lymphocyte in comparison with controls. In addition, they had disturbed serum levels of adipocytokines and inflammatory markers. These derangements could have a role in the immunological disturbance observed in thalassemic patients.
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Affiliation(s)
- Khalid I Elsayh
- Pediatric Department, Faculty of Medicine, Assiut University, Assiut, 71516, Egypt
| | - Wafaa S Mohammed
- Clinical Pathology Department, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Asmaa M Zahran
- Clinical Pathology Department, South Egypt Cancer Institute, Assiut University, Assiut, Egypt
| | - Khaled Saad
- Pediatric Department, Faculty of Medicine, Assiut University, Assiut, 71516, Egypt.
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