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Thubthed R, Siriworadetkun S, Paiboonsukwong K, Fucharoen S, Pattanapanyasat K, Vadolas J, Svasti S, Chaichompoo P. Impaired neutrophil extracellular trap formation in β-thalassaemia/HbE. Sci Rep 2022; 12:1967. [PMID: 35121800 PMCID: PMC8816948 DOI: 10.1038/s41598-022-06036-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Accepted: 01/19/2022] [Indexed: 11/16/2022] Open
Abstract
Neutrophil dysfunction contributes to a high susceptibility to severe bacterial infection which is a leading cause of morbidity and mortality in β-thalassaemia/HbE, especially in splenectomised patients. This study demonstrated another abnormality of neutrophil function, namely neutrophil extracellular trap (NET) formation in splenectomised and non-splenectomised β-thalassaemia/HbE patients who had iron overload. A classification system of morphological NET formation using confocal microscopy was developed, and samples were categorized into early and late phases which were subdivided into web-like and non-web structures. At baseline, neutrophils from non-splenectomised patients (58 ± 4%) and splenectomised patients (65 ± 3%) had higher early phase NETs than those from normal subjects (33 ± 1%). As a mimic of iron overload and infection, haemin/PMA/LPS treatment led to a significant reduction of early NETs and an increase of late NETs in neutrophils from normal and non-splenectomised patients. Interestingly, neutrophils from splenectomised patients had impaired development of late NETs. This suggests that during infection bacteria might not be trapped and may spread from the site of infection resulting in higher susceptibility to severe bacterial infection in splenectomised patients.
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Affiliation(s)
- Rattanawan Thubthed
- Department of Pathobiology, Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Sirikwan Siriworadetkun
- Department of Pathobiology, Faculty of Science, Mahidol University, Bangkok, Thailand.,Thalassemia Research Center, Institute of Molecular Biosciences, Mahidol University, Nakhon Pathom, Thailand
| | - Kittiphong Paiboonsukwong
- Thalassemia Research Center, Institute of Molecular Biosciences, Mahidol University, Nakhon Pathom, Thailand
| | - Suthat Fucharoen
- Thalassemia Research Center, Institute of Molecular Biosciences, Mahidol University, Nakhon Pathom, Thailand
| | - Kovit Pattanapanyasat
- Siriraj Center of Research Excellence for Microparticle and Exosome in Diseases, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Jim Vadolas
- Centre for Cancer Research, Hudson Institute of Medical Research, Melbourne, Australia.,Department of Molecular and Translational Science, Monash University, Melbourne, Australia
| | - Saovaros Svasti
- Thalassemia Research Center, Institute of Molecular Biosciences, Mahidol University, Nakhon Pathom, Thailand.,Department of Biochemistry, Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Pornthip Chaichompoo
- Department of Pathobiology, Faculty of Science, Mahidol University, Bangkok, Thailand.
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2
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Nanou A, Toumpeki C, Fanis P, Bianchi N, Cosenza LC, Zuccato C, Sentis G, Giagkas G, Stephanou C, Phylactides M, Christou S, Hadjigavriel M, Sitarou M, Lederer CW, Gambari R, Kleanthous M, Katsantoni E. Sex-specific transcriptional profiles identified in β-thalassemia patients. Haematologica 2021; 106:1207-1211. [PMID: 32817281 PMCID: PMC8018115 DOI: 10.3324/haematol.2020.248013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Indexed: 11/29/2022] Open
Affiliation(s)
- Aikaterini Nanou
- Basic Research Center, Biomedical Research Foundation, Academy of Athens, Athens, Greece
| | - Chrisavgi Toumpeki
- Basic Research Center, Biomedical Research Foundation, Academy of Athens, Athens, Greece
| | - Pavlos Fanis
- Molecular Genetics Thalassaemia Department, The Cyprus Institute of Neurology and Genetics, Nicosia
| | - Nicoletta Bianchi
- Department of Life Sciences and Biotechnology, Ferrara University, Ferrara, Italy
| | | | - Cristina Zuccato
- Department of Life Sciences and Biotechnology, Ferrara University, Ferrara, Italy
| | - George Sentis
- Basic Research Center, Biomedical Research Foundation, Academy of Athens, Athens, Greece
| | - Giorgos Giagkas
- Basic Research Center, Biomedical Research Foundation, Academy of Athens, Athens, Greece
| | - Coralea Stephanou
- Molecular Genetics Thalassaemia Department, The Cyprus Institute of Neurology and Genetics, Nicosia
| | - Marios Phylactides
- Molecular Genetics Thalassaemia Department, The Cyprus Institute of Neurology and Genetics, Nicosia
| | | | | | - Maria Sitarou
- Thalassemia Clinic Larnaca, Larnaca General Hospital, Larnaca, Cyprus
| | - Carsten W Lederer
- Molecular Genetics Thalassaemia Department, The Cyprus Institute of Neurology and Genetics, Nicosia
| | - Roberto Gambari
- Department of Life Sciences and Biotechnology, Ferrara University, Ferrara, Italy
| | - Marina Kleanthous
- Molecular Genetics Thalassaemia Department, The Cyprus Institute of Neurology and Genetics, Nicosia
| | - Eleni Katsantoni
- Basic Research Center, Biomedical Research Foundation, Academy of Athens, Athens, Greece
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3
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Panjawatanan P, Charoenkwan P, Tantiworawit A, Strogatz D, Perry KE, Tuntiwechapikul W. Telomere shortening correlates with disease severity in hemoglobin H disease patients. Blood Cells Mol Dis 2021; 89:102563. [PMID: 33798832 DOI: 10.1016/j.bcmd.2021.102563] [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: 11/23/2020] [Revised: 03/16/2021] [Accepted: 03/19/2021] [Indexed: 10/21/2022]
Abstract
Hemoglobin H (Hb H) disease is the most significant health problem of the α-thalassemia syndromes. The Hb disease patients are categorized based on their genotype to deletional and nondeletional, with the latter genotype presents the more severe clinical symptoms. Since telomere length is an indicator of biological aging and health, we hypothesized that telomere length could reflect Hb H disease's severity. In this study, we recruited 48 deletional and 47 nondeletional Hb H disease patients, along with 109 normal controls, for telomere length assessment. The leukocyte telomere length was assessed by monochromatic multiplex real-time PCR and reported as the telomere to single-copy gene (T/S) ratio. When telomere length was adjusted for age, the analysis of covariance between the control and the two Hb H disease groups revealed no significant difference. However, the telomere shortening rate was more rapid in the nondeletional Hb H disease group than those of the control and deletional Hb H disease groups. Gender analysis found that male patients have a significantly lower T/S ratio than females in the nondeletional group but not in the control and deletional groups. In the two disease groups, the T/S ratio was not influenced by ferritin level or transfusion burden but was positively correlated with the absolute reticulocyte count.
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Affiliation(s)
- Panadeekarn Panjawatanan
- Department of Biochemistry, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Department of Internal Medicine, Bassett Medical Center, Cooperstown, NY, USA
| | - Pimlak Charoenkwan
- Division of Hematology and Oncology, Department of Pediatrics, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Adisak Tantiworawit
- Division of Hematology, Department of Internal Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | | | - Kelly E Perry
- Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Wirote Tuntiwechapikul
- Department of Biochemistry, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.
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4
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Leukocyte telomere length in patients with transfusion-dependent thalassemia. BMC Med Genomics 2020; 13:73. [PMID: 32487251 PMCID: PMC7268254 DOI: 10.1186/s12920-020-00734-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 05/25/2020] [Indexed: 11/10/2022] Open
Abstract
Background Thalassemia is a hereditary hemolytic anemia with a severity ranging from mild, non-transfusion dependent to severe chronic anemia requiring lifelong transfusion. Transfusional iron overload is a major complication in patients with transfusion-dependent thalassemia (TDT). Telomeres are sequences of nucleotides forming the end caps of chromosomes that act as a DNA repair system. Iron overload in thalassemia can cause increased oxidative stress which leads to cellular damage and senescence. This may result in telomere length shortening. The degree of telomere length shortening may reflect the severity of thalassemia. Methods This research aimed to study the leukocyte telomere length in patients with TDT in comparison to non-thalassemic individuals and to identify the clinical and laboratory parameters that are associated with telomere length. We conducted a cross-sectional study in patients with TDT aged ≥18 years. Leukocyte telomere length was measured by real-time quantitative PCR. Results Sixty-five patients with TDT were enrolled onto the study. There were 37 female patients (54.4%). The median age was 27 (18–57) years, and mean pre-transfusion hemoglobin level was 7.1 (± 1.07) g/dL. The mean telomere to single copy gene (T/S) ratios of patients with TDT and the controls were 0.72 ± 0.18 and 0.99 ± 0.25, respectively (p < 0.0001). There was a significant correlation between the T/S ratio and age (p = 0.0002), and hemoglobin level (p = 0.044). There was no correlation between telomere length and other factors. Conclusions Our study showed that TDT patients had shorter leukocyte telomere length compared with controls. Leukocyte telomere shortening in TDT was an aging-dependent process and associated with lower hemoglobin level.
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Affiliation(s)
- Viroj Wiwanitkit
- Dr DY Patil University, Pune, India.,Hainan Medical University, Haikou, China.,Joseph Ayobabalola Univerity, Ikeji-Arakeji, Nigeria.,Faculty of Medicine, University of Nis, Nis, Serbia
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