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Ono R, Kitagawa I. SARS-CoV-2 infection-induced immune thrombocytopenia: a systematic review of current reports. Ann Hematol 2024:10.1007/s00277-024-05765-1. [PMID: 38652242 DOI: 10.1007/s00277-024-05765-1] [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: 02/08/2024] [Accepted: 04/17/2024] [Indexed: 04/25/2024]
Abstract
Immune thrombocytopenia (ITP) is an autoimmune disorder characterized by a low platelet count with increased risk of bleeding, and viral infection may trigger ITP. Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection-induced ITP has been increasingly reported. We systemically reviewed the previously reported cases of SARS-CoV-2 infection-induced ITP and identified a total of 105 patients from 68 studies. The median age was 61 years, and 14 patients (12%) were < 18 years old (pediatric cases). In adult cases, a total of 53% patients were classified as moderate to severe SARS-CoV-2 infection. The median platelet count at diagnosis and nadir were 6,000/µL and 4,000/µL, respectively. When comparing platelet levels between non-severe SARS-CoV-2 infection and moderate to severe SARS-CoV-2 infection, the median values of platelet levels at diagnosis were not significantly different between the groups (4,000/µL in non-severe SARS-CoV-2 infection and 9,000/µL in moderate to severe SARS-CoV-2 infection, p-value = 0.22). Median nadir platelet levels were also not significantly different between groups (4,000/µL in non-severe SARS-CoV-2 infection and 8,000/µL in moderate to severe SARS-CoV-2 infection, p-value = 0.27). More than half of the cases (53 patients) were treated with combination therapy including steroid, intravenous immunoglobulin, and eltrombopag. Major bleeding and intracranial hemorrhage occurred in ten (11%) and six (6.6%) cases, respectively. The overall mortality rate was 7%. In pediatric cases, none of the patients experienced major bleeding and lethal outcomes.
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Affiliation(s)
- Ryohei Ono
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-Ku, Chiba, 260-8670, Japan.
| | - Izumi Kitagawa
- Department of General Internal Medicine, Shonan Fujisawa Tokushukai Hospital, Japan, 1-5-1 Tsujido Kandai, Fujisawa, Kanagawa, 251-0041, Japan
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2
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Pushalkar S, Wu S, Maity S, Pressler M, Rendleman J, Vitrinel B, Jeffery L, Abdelhadi R, Chen M, Ross T, Carlock M, Choi H, Vogel C. Complex changes in serum protein levels in COVID-19 convalescents. Sci Rep 2024; 14:4479. [PMID: 38396092 PMCID: PMC10891133 DOI: 10.1038/s41598-024-54534-7] [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: 11/03/2023] [Accepted: 02/13/2024] [Indexed: 02/25/2024] Open
Abstract
The COVID-19 pandemic, triggered by severe acute respiratory syndrome coronavirus 2, has affected millions of people worldwide. Much research has been dedicated to our understanding of COVID-19 disease heterogeneity and severity, but less is known about recovery associated changes. To address this gap in knowledge, we quantified the proteome from serum samples from 29 COVID-19 convalescents and 29 age-, race-, and sex-matched healthy controls. Samples were acquired within the first months of the pandemic. Many proteins from pathways known to change during acute COVID-19 illness, such as from the complement cascade, coagulation system, inflammation and adaptive immune system, had returned to levels seen in healthy controls. In comparison, we identified 22 and 15 proteins with significantly elevated and lowered levels, respectively, amongst COVID-19 convalescents compared to healthy controls. Some of the changes were similar to those observed for the acute phase of the disease, i.e. elevated levels of proteins from hemolysis, the adaptive immune systems, and inflammation. In contrast, some alterations opposed those in the acute phase, e.g. elevated levels of CETP and APOA1 which function in lipid/cholesterol metabolism, and decreased levels of proteins from the complement cascade (e.g. C1R, C1S, and VWF), the coagulation system (e.g. THBS1 and VWF), and the regulation of the actin cytoskeleton (e.g. PFN1 and CFL1) amongst COVID-19 convalescents. We speculate that some of these shifts might originate from a transient decrease in platelet counts upon recovery from the disease. Finally, we observed race-specific changes, e.g. with respect to immunoglobulins and proteins related to cholesterol metabolism.
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Affiliation(s)
- Smruti Pushalkar
- Department of Biology, Center for Genomics and Systems Biology, New York University, New York, NY, USA.
| | - Shaohuan Wu
- Department of Biology, Center for Genomics and Systems Biology, New York University, New York, NY, USA
| | - Shuvadeep Maity
- Department of Biology, Center for Genomics and Systems Biology, New York University, New York, NY, USA
- Birla Institute of Technology and Science-Pilani (BITS Pilani), Hyderabad, India
| | - Matthew Pressler
- Department of Biology, Center for Genomics and Systems Biology, New York University, New York, NY, USA
| | - Justin Rendleman
- Department of Biology, Center for Genomics and Systems Biology, New York University, New York, NY, USA
| | - Burcu Vitrinel
- Department of Biology, Center for Genomics and Systems Biology, New York University, New York, NY, USA
| | - Lauren Jeffery
- Department of Biology, Center for Genomics and Systems Biology, New York University, New York, NY, USA
| | - Ryah Abdelhadi
- Department of Biology, Center for Genomics and Systems Biology, New York University, New York, NY, USA
| | - Mechi Chen
- Department of Biology, Center for Genomics and Systems Biology, New York University, New York, NY, USA
| | - Ted Ross
- Cleveland Clinic Florida Research & Innovation Center, Port St. Lucie, FL, USA
| | - Michael Carlock
- Cleveland Clinic Florida Research & Innovation Center, Port St. Lucie, FL, USA
| | - Hyungwon Choi
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Christine Vogel
- Department of Biology, Center for Genomics and Systems Biology, New York University, New York, NY, USA.
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Mettananda C, Williams S. Persistent, Poorly Responsive Immune Thrombocytopenia Secondary to Asymptomatic COVID-19 Infection in a Child. Case Rep Infect Dis 2023; 2023:3298520. [PMID: 38145004 PMCID: PMC10746360 DOI: 10.1155/2023/3298520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 11/06/2023] [Accepted: 12/09/2023] [Indexed: 12/26/2023] Open
Abstract
Immune thrombocytopenic purpura (ITP) secondary to asymptomatic COVID-19 infection, especially in children, is not reported. Furthermore, persistent, treatment-resistant ITP secondary to COVID-19 is not reported. We report a previously healthy 14-year-old Asian boy who developed secondary ITP following an asymptomatic COVID-19 infection and is having a relapsing and remitting cause with poor response to immunosuppressants even after 21 months following the diagnosis. This case emphasizes the importance of testing for COVID-19 in newly diagnosed ITP patients and the need for follow-up platelet counts in patients who recover from COVID-19 as it may follow into developing secondary ITP yet being asymptomatic until you present with a bleeding complication of ITP. The poor response to standard immunosuppression warrants more understanding of the pathophysiology of persistently low platelets following COVID-19 infection. Long-term sequelae of the disease highlight the importance of getting vaccinated for COVID-19 despite COVID-19 being no longer a global emergency.
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Affiliation(s)
- Chamila Mettananda
- Department of Pharmacology, Faculty of Medicine, University of Kelaniya, Colombo, Sri Lanka
| | - Senani Williams
- Department of Pathology, Faculty of Medicine, University of Kelaniya, Colombo, Sri Lanka
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Anzai T, Nakashima N, Betsui H, Kawahara Y, Hayashi Y, Kimura H, Shimada A. Infant case of severe immune thrombocytopenia caused by COVID-19 infection. EJHAEM 2023; 4:1148-1151. [PMID: 38024599 PMCID: PMC10660122 DOI: 10.1002/jha2.811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 09/28/2023] [Indexed: 12/01/2023]
Abstract
Immune thrombocytopenia (ITP) is a common childhood acute autoimmune bleeding disorder caused by numerous viruses and characterized by isolated thrombocytopenia. Although cases of ITP caused by coronavirus disease 2019 (COVID-19) infection have been reported in adults, pediatric reports are limited. We present the case of a 1-year-old girl who developed COVID-19-infection-related ITP with a very low platelet count (0.0 × 104/μL). We searched for COVID-19-related pediatric ITP cases and found 10 other cases, with the majority having platelet counts of <1.0 × 104/μL. Although pediatric ITP cases caused by COVID-19 infection may be severe, further studies are needed.
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Affiliation(s)
- Tatsuya Anzai
- Department of PediatricsJichi Medical UniversityShimotsukeTochigiJapan
- Department of PediatricsKoga Red Cross HospitalKogaIbarakiJapan
| | - Naomi Nakashima
- Department of PediatricsKoga Red Cross HospitalKogaIbarakiJapan
| | - Hiroyuki Betsui
- Department of PediatricsJichi Medical UniversityShimotsukeTochigiJapan
| | - Yuta Kawahara
- Department of PediatricsJichi Medical UniversityShimotsukeTochigiJapan
| | - Yuriko Hayashi
- Department of Health ScienceGunma Paz University Graduate SchoolTakasakiGunmaJapan
| | - Hirokazu Kimura
- Department of Health ScienceGunma Paz University Graduate SchoolTakasakiGunmaJapan
| | - Akira Shimada
- Department of PediatricsJichi Medical UniversityShimotsukeTochigiJapan
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Cheng J, Zeng H, Chen H, Fan L, Xu C, Huang H, Tang T, Li M. Current knowledge of thrombocytopenia in sepsis and COVID-19. Front Immunol 2023; 14:1213510. [PMID: 37841241 PMCID: PMC10568455 DOI: 10.3389/fimmu.2023.1213510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 09/12/2023] [Indexed: 10/17/2023] Open
Abstract
Thrombocytopenia, characterized by a decrease in platelet count, is commonly observed in sepsis and COVID-19. In sepsis, thrombocytopenia can result from various mechanisms, including impaired platelet production in the bone marrow, accelerated platelet destruction due to increased inflammation, sequestration of platelets in the spleen, immune-mediated platelet destruction, or dysregulated host responses. Similarly, thrombocytopenia has been reported in COVID-19 patients, but the immune-related mechanisms underlying this association remain unclear. Notably, interventions targeting thrombocytopenia have shown potential for improving outcomes in both sepsis and COVID-19 patients. Understanding these mechanisms is crucial for developing effective treatments.
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Affiliation(s)
- Junjie Cheng
- Intensive Care Unit, The Fourth Affiliated Hospital, School of Medicine, Zhejiang University, Yiwu, China
| | - Hanhai Zeng
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Huaijun Chen
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Linfeng Fan
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Chaoran Xu
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Huaping Huang
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Tianchi Tang
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Min Li
- Intensive Care Unit, The Fourth Affiliated Hospital, School of Medicine, Zhejiang University, Yiwu, China
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6
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Zeylabi F, Nameh Goshay Fard N, Parsi A, Pezeshki SMS. Bone marrow alterations in COVID-19 infection: The root of hematological problems. Curr Res Transl Med 2023; 71:103407. [PMID: 37544028 DOI: 10.1016/j.retram.2023.103407] [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: 05/30/2023] [Revised: 07/04/2023] [Accepted: 07/24/2023] [Indexed: 08/08/2023]
Abstract
INTRODUCTION The 2019 coronavirus disease (COVID-19) is a respiratory infection caused by the SARS-CoV-2 virus with a significant impact on the hematopoietic system and homeostasis. The effect of the virus on blood cells indicates the involvement of the bone marrow (BM) as the place of production and maturation of these cells by the virus and it reminds the necessity of investigating the effect of the virus on the bone marrow. METHOD To investigate the effects of COVID-19 infection in BM, we reviewed literature from the Google Scholar search engine and PubMed database up to 2022 using the terms "COVID-19; SARS-CoV-2; Bone marrow; Thrombocytopenia; Hemophagocytosis; Pancytopenia and Thrombocytopenia. RESULTS Infection with the SARS-CoV-2 virus is accompanied by alterations such as single-line cytopenia, pancytopenia, hemophagocytosis, and BM necrosis. The presence of factors such as cytokine release syndrome, the direct effect of the virus on cells through different receptors, and the side effects of current treatments such as corticosteroids are some of the important mechanisms in the occurrence of these alterations. CONCLUSION To our knowledge, this review is the first study to comprehensively investigate BM alterations caused by SAR-CoV-2 virus infection. The available findings show that the significant impact of this viral infection on blood cells and the clinical consequences resulting from them are deeper than previously thought and it may be rooted in the changes that the virus causes in the BM of patients.
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Affiliation(s)
- Fatemeh Zeylabi
- Cellular and Molecular Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Najmeh Nameh Goshay Fard
- Thalassemia & Hemoglobinopathy Research Center, Health Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Abazar Parsi
- Alimentary Tract Research Center, Clinical Sciences Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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Caseiro Alves ME, Carmo F, Malato M, Cunha F. Immune thrombocytopenia in the setting of acute SARS-CoV-2 infection. BMJ Case Rep 2023; 16:e254352. [PMID: 37385718 DOI: 10.1136/bcr-2022-254352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/01/2023] Open
Abstract
Immune thrombocytopenia (ITP) is an immune-mediated event, characterised by the destruction of platelets by autoantibodies resulting in isolated thrombocytopaenia (platelets <100 x109/L). In children, most cases are preceded by a viral infection. Cases of ITP in the setting of SARS-CoV-2 infection have been described. We describe a previously healthy boy, who presented with an extensive frontal and periorbital haematoma, petechial rash on the trunk and coryza. He had suffered a minor head trauma, 9 days before admission. Blood tests revealed a platelet count of 8000/µL. The remainder study was unremarkable, except for a positive SARS-CoV-2 PCR. Treatment comprised a single dose of intravenous immunoglobulin, with increase in platelet count and no recurrence. We made a working diagnosis of an ITP concurrent with a SARS-CoV-2 infection. Although few cases have been described, SARS-CoV-2 might be considered as a trigger for ITP.
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Affiliation(s)
- M Eduarda Caseiro Alves
- Pediatria Médica, Centro Hospitalar e Universitário de Lisboa Central E.P.E, Hospital de Dona Estefânia, Lisboa, Portugal
| | - Filipa Carmo
- Pediatria, Centro Hospitalar e Universitário de Lisboa Norte, E P E, Lisboa, Portugal
| | - Madalena Malato
- Pediatria Geral, Hospital de Vila Franca de Xira, E P E, Vila Franca de Xira, Portugal
| | - Florbela Cunha
- Pediatria Geral, Hospital de Vila Franca de Xira, E P E, Vila Franca de Xira, Portugal
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8
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Bijaya M, Ansari Z, Koshy B, Sunder A. Immune Thrombocytopenia Secondary to COVID-19 in a Vitamin B12-Deficient Patient: A Diagnostic Dilemma and Therapeutic Challenge. Cureus 2023; 15:e40199. [PMID: 37435254 PMCID: PMC10330955 DOI: 10.7759/cureus.40199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/09/2023] [Indexed: 07/13/2023] Open
Abstract
Immune thrombocytopenia (ITP) caused by infectious and non-infectious conditions has been reported in coronavirus disease 2019 (COVID-19) patients too. Here we present a 64-year-old male patient with post-COVID-19 pneumonia who presented with a gastrointestinal bleed and was found to have severe isolated thrombocytopenia (22,000/cumm) diagnosed as ITP with extensive investigations. He was treated with pulse steroid therapy and later was also given intravenous immunoglobin in view of poor response. The addition of eltrombopag also resulted in a sub-optimal response. He was also having low vitamin B12, and his bone marrow also supported the megaloblastic picture. Hence, injectable cobalamin was added to the regimen, which resulted in a sustained rise in platelet count that reached 78,000/cumm, and the patient got discharged. This shows the possible hindrance to treatment response by concomitant B12 deficiency. Vitamin B12 deficiency is not an uncommon entity and should be tested in those who show no or slow response to thrombocytopenia.
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Affiliation(s)
| | - Zeya Ansari
- Internal Medicine, Manipal Tata Medical College, Jamshedpur, IND
- Internal Medicine, Tata Main Hospital, Jamshedpur, IND
| | - Binu Koshy
- Internal Medicine, Tata Main Hospital, Jamshedpur, IND
| | - Ashok Sunder
- Internal Medicine, Tata Main Hospital, Jamshedpur, IND
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9
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Okyar B, Torun B, Öktem ES, Bahar AY, Yıldız F, Çetin GY. Mimic or coincidentally? TAFRO syndrome and systemic lupus erythematosus: A case-based review. Mod Rheumatol Case Rep 2023; 7:271-275. [PMID: 35538613 DOI: 10.1093/mrcr/rxac045] [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: 03/25/2022] [Revised: 04/20/2022] [Accepted: 04/26/2022] [Indexed: 01/07/2023]
Abstract
Castleman's disease (CD) is a rare, systemic disease with histopathological features of angiofollicular lymph node hyperplasia. In the literature, there are case-level reports that mimic or coexist with systemic lupus erythematosus (SLE) clinically and in the laboratory. Is this condition two separate diseases or is it an imitation of each other? A 73-year-old female patient was admitted to our clinic with arthritis, lymphadenopathy, fever, weight loss, and malar rash. He had a history of idiopathic thrombocytopenic purpura and thrombosis in the right leg tibialis posterior and dorsalis pedis arteries. Excisional lymphadenopathy biopsy indicated a diagnosis of hyaline-vascular-type CD. She had anti-nuclear antibody >1/80 homogeneous pattern, anti-double stranded DNA (anti-dsDNA), Anti-Smith (Sm) antibody positivity, hypocomplementemia (C3 and C4), pleural effusion, and pericardial effusion. For this reason, the classification criteria of the European League Against Rheumatism/American College of Rheumatology were studied. Clinical findings, idiopathic thrombocytopenic purpura history, antibody positivity, malar rash, and arthritis led us to the diagnosis of SLE. She was treated with 1 mg/kg/day prednisolone and hydroxychloroquine 200 mg 2 × 1. Azathioprine 2.5 mg/kg daily was added to the patient whose complaints did not improve. In the follow-ups, she completely recovered clinically and laboratory. SLE and CD are systemic diseases that overlap in many ways. The literature review shows that these two diseases may mimic each other or may coexist. This situation may be a reflection of a pathophysiological process that has not yet been clarified. This confusing process also affects the treatment decision. This confusing process also affects the treatment decision.
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Affiliation(s)
- Burak Okyar
- Division of Rheumatology, Department of Internal Medicine, Kahramanmaraş Sütçü İmam University Faculty of Medicine, Onikişubat/Kahramanmaraş, Turkey
| | - Bekir Torun
- Division of Rheumatology, Department of Internal Medicine, Kahramanmaraş Sütçü İmam University Faculty of Medicine, Onikişubat/Kahramanmaraş, Turkey
| | - Esen Saba Öktem
- Division of Rheumatology, Department of Internal Medicine, Kahramanmaraş Sütçü İmam University Faculty of Medicine, Onikişubat/Kahramanmaraş, Turkey
| | - Abdulkadir Yasir Bahar
- Department of Pathology, Kahramanmaraş Sütçü İmam University Faculty of Medicine, Onikişubat/Kahramanmaraş, Turkey
| | - Fatih Yıldız
- Division of Rheumatology, Department of Internal Medicine, Kahramanmaraş Sütçü İmam University Faculty of Medicine, Onikişubat/Kahramanmaraş, Turkey
| | - Gözde Yıldırım Çetin
- Division of Rheumatology, Department of Internal Medicine, Kahramanmaraş Sütçü İmam University Faculty of Medicine, Onikişubat/Kahramanmaraş, Turkey
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Auteri G, Paglia S, Mazzoni C, Biondo M, Venturi M, Romagnoli AD, Bartoletti D, Cavo M, Vianelli N, Palandri F. Immune Thrombocytopenia Onset and Relapse During the COVID-19 Pandemic. A Monocenter Study. Mediterr J Hematol Infect Dis 2023; 15:e2023029. [PMID: 37180204 PMCID: PMC10171210 DOI: 10.4084/mjhid.2023.029] [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: 02/01/2023] [Accepted: 04/18/2023] [Indexed: 05/16/2023] Open
Abstract
Background And Objectives Several infections and vaccinations can provoke immune thrombocytopenia (ITP) onset or relapse. Information on ITP epidemiology and management during the Covid-19 pandemic is scarce. In a large monocenter ITP cohort, we assessed the incidence and risk factors for: 1) ITP onset/relapse after Covid19 vaccination/infection; 2) Covid19 infection. Methods Information on the date/type of anti-Covid-19 vaccine, platelet count before and within 30 days from the vaccine, and date/grade of Covid-19 was collected via phone call or during hematological visits. ITP relapse was defined as a drop in PLT count within 30 days from vaccination, compared to PLT count before vaccination that required a rescue therapy OR a dose increase of an ongoing therapy OR a PLT count <30 ×109/L with ≥20% decrease from baseline. Results Between February 2020 and January 2022, 60 new ITP diagnoses were observed (30% related to Covid-19 infection or vaccination). Younger and older ages were associated with a higher probability of ITP related to Covid19 infection (p=0.02) and vaccination (p=0.04), respectively. Compared to Covid-19-unrelated ITP, Infection- and vaccine-related ITP had lower response rates (p=0.03) and required more prolonged therapy (p=0.04), respectively. Among the 382 patients with known ITP at the pandemic start, 18.1% relapsed; relapse was attributed to Covid-19 infection/vaccine in 52.2%. The risk of relapse was higher in patients with active disease (p<0.001) and previous vaccine-related relapse (p=0.006). Overall, 18.3% of ITP patients acquired Covid19 (severe in 9.9%); risk was higher in unvaccinated patients (p<0.001). Conclusions All ITP patients should receive ≥1 vaccine dose and laboratory follow-up after vaccination, with a case-by-case evaluation of completion of the vaccine program if vaccine-related ITP onset/relapse and with tempest initiation of antiviral therapy in unvaccinated patients.
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Affiliation(s)
- Giuseppe Auteri
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Istituto di Ematologia “Seràgnoli”, Bologna, Italy
- Dipartimento di Scienze Mediche e Chirurgiche, Università di Bologna, Italy
| | - Simona Paglia
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Istituto di Ematologia “Seràgnoli”, Bologna, Italy
- Dipartimento di Scienze Mediche e Chirurgiche, Università di Bologna, Italy
| | - Camilla Mazzoni
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Istituto di Ematologia “Seràgnoli”, Bologna, Italy
- Dipartimento di Scienze Mediche e Chirurgiche, Università di Bologna, Italy
| | - Mattia Biondo
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Istituto di Ematologia “Seràgnoli”, Bologna, Italy
- Dipartimento di Scienze Mediche e Chirurgiche, Università di Bologna, Italy
| | - Marta Venturi
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Istituto di Ematologia “Seràgnoli”, Bologna, Italy
- Dipartimento di Scienze Mediche e Chirurgiche, Università di Bologna, Italy
| | - Andrea Davide Romagnoli
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Istituto di Ematologia “Seràgnoli”, Bologna, Italy
- Dipartimento di Scienze Mediche e Chirurgiche, Università di Bologna, Italy
| | - Daniela Bartoletti
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Istituto di Ematologia “Seràgnoli”, Bologna, Italy
| | - Michele Cavo
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Istituto di Ematologia “Seràgnoli”, Bologna, Italy
- Dipartimento di Scienze Mediche e Chirurgiche, Università di Bologna, Italy
| | - Nicola Vianelli
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Istituto di Ematologia “Seràgnoli”, Bologna, Italy
| | - Francesca Palandri
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Istituto di Ematologia “Seràgnoli”, Bologna, Italy
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11
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Nagori EK, Ghantarchyan H, Qadir A, Arabian S. COVID-19-Induced Thrombocytopenia: A Brief Literature Review and Case Report. Cureus 2022; 14:e30993. [DOI: 10.7759/cureus.30993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/01/2022] [Indexed: 11/07/2022] Open
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12
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Coronavirus Disease 2019-Associated Coagulopathy. Microorganisms 2022; 10:microorganisms10081556. [PMID: 36013974 PMCID: PMC9415473 DOI: 10.3390/microorganisms10081556] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 07/26/2022] [Accepted: 07/28/2022] [Indexed: 01/27/2023] Open
Abstract
Coronavirus disease 2019 (COVID-19)-associated coagulopathy is an acute illness characterized by thrombosis with or without hemorrhage after COVID-19 infection. Clinical symptoms of COVID-19-associated coagulopathy can occur at any anatomical site. Various forms of venous thromboembolism, including deep vein thrombosis and pulmonary embolism, are common in acutely ill patients with COVID-19. Laboratory findings, such as D-dimer and platelet counts, can help diagnose COVID-19-associated coagulopathy. Anticoagulation using direct oral anticoagulants and low-molecular-weight heparin is essential for the treatment of COVID-19-associated coagulopathy. Prophylactic anticoagulants are important in preventing COVID-19-associated coagulopathy in patients with severe COVID-19. In particular, the early initiation of prophylactic anticoagulation in patients with COVID-19 can improve survival rates without the risk of serious bleeding events.
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Boehm BA, Packer CD. Persistent Relapsing Immune Thrombocytopenia Following COVID-19 Infection. Cureus 2022; 14:e27133. [PMID: 36004011 PMCID: PMC9392851 DOI: 10.7759/cureus.27133] [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] [Accepted: 07/22/2022] [Indexed: 11/12/2022] Open
Abstract
Immune thrombocytopenia (ITP) is a rare autoimmune disease that presents along a spectrum of disease severity, ranging from asymptomatic thrombocytopenia to potentially life-threatening bleeding complications. Recent case reports and case series suggest that a COVID-19 infection can trigger secondary ITP and may be associated with higher rates of bleeding and lower nadir platelet counts compared to patients with ITP of other etiologies. Multiple ITP relapses have also been described in some COVID-19 patients. We report the case of a 30-year-old otherwise healthy woman who presented to the hospital with fatigue, easy bruising, and a platelet count of 11 x 103/µL. She responded well to our initial treatment with prednisone and intravenous immunoglobulin (IVIG) but experienced a persistent disease course with nine ITP relapses (defined as platelet count <30 x 103/µL) over the next 10.5 months, requiring six additional hospital admissions for acute management as well as long-term maintenance medication adjustments. It is important for clinicians to recognize ITP as a potential complication of a COVID-19 infection and to initiate early therapy to prevent serious bleeding in these patients. Further studies will be needed to understand the natural history, optimal treatment, and prognosis for patients with relapsing COVID-19-associated ITP.
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14
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Marinescu AR, Lazureanu VE, Musta VF, Nicolescu ND, Mocanu A, Cut TG, Muresan CO, Tudoran C, Licker M, Laza R. Severe Thrombocytopenic Purpura Associated with COVID-19 in a Pediatric Patient. Infect Drug Resist 2022; 15:3405-3415. [PMID: 35794926 PMCID: PMC9252296 DOI: 10.2147/idr.s363716] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 06/21/2022] [Indexed: 01/19/2023] Open
Abstract
Purpose Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is known to cause a diverse spectrum of clinical manifestations ranging from mild, flu-like symptoms to severe progressive pneumonia, acute respiratory distress syndrome with or without other extrapulmonary impairment. Hematological changes such as lymphopenia, neutrophilia, and anemia as the disease progresses, are frequently found in COVID-19. Thrombocytopenia may be drug-induced or can occur secondary to sepsis, disseminated intravascular coagulation or bone marrow suppression. Immune thrombocytopenic purpura (ITP) is frequently observed in children aged 2-5 years and in 60% of cases may proceed an upper respiratory tract infection. The present paper aimed to raise awareness of ITP as a possible pediatric presentation of coronavirus disease. Patients and Methods We present the case of previously healthy, eight-year-old female patient, who developed an immune thrombocytopenia flare, also known as immune thrombocytopenic purpura (ITP), in the context of COVID-19, with diffuse petechiae and ecchymosis on her body, face and oral mucosa, and a nadir platelet count of 0×103/μL. Results Platelet count recovery was observed after seven days of combined treatment with intravenous immunoglobulin (IVIG) and corticosteroids. Conclusion The growing body of literature regarding the clinical and laboratory manifestations of COVID-19 infection in children, has reported thrombocytopenia in relation to unfavorable disease progression or multisystem inflammatory syndrome (MIS-C). Clinicians must be aware that ITP may appear both in mild and severe COVID-19, at any time during its course, and can be associated with a higher bleeding risk, thus its diagnostic may be critical.
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Affiliation(s)
- Adelina Raluca Marinescu
- Discipline of Infectious Diseases, Victor Babes University of Medicine and Pharmacy Timisoara, Timisoara, Romania.,Victor Babes Clinical Hospital of Infectious Diseases and Pneumophtisiology, Timisoara, Romania.,Doctoral School, Victor Babes University of Medicine and Pharmacy Timisoara, Timisoara, Romania
| | - Voichita Elena Lazureanu
- Discipline of Infectious Diseases, Victor Babes University of Medicine and Pharmacy Timisoara, Timisoara, Romania.,Victor Babes Clinical Hospital of Infectious Diseases and Pneumophtisiology, Timisoara, Romania
| | - Virgil Filaret Musta
- Discipline of Infectious Diseases, Victor Babes University of Medicine and Pharmacy Timisoara, Timisoara, Romania.,Victor Babes Clinical Hospital of Infectious Diseases and Pneumophtisiology, Timisoara, Romania
| | - Narcisa Daniela Nicolescu
- Discipline of Infectious Diseases, Victor Babes University of Medicine and Pharmacy Timisoara, Timisoara, Romania.,Victor Babes Clinical Hospital of Infectious Diseases and Pneumophtisiology, Timisoara, Romania
| | - Alexandra Mocanu
- Discipline of Infectious Diseases, Victor Babes University of Medicine and Pharmacy Timisoara, Timisoara, Romania.,Victor Babes Clinical Hospital of Infectious Diseases and Pneumophtisiology, Timisoara, Romania.,Doctoral School, Victor Babes University of Medicine and Pharmacy Timisoara, Timisoara, Romania
| | - Talida Georgiana Cut
- Discipline of Infectious Diseases, Victor Babes University of Medicine and Pharmacy Timisoara, Timisoara, Romania.,Victor Babes Clinical Hospital of Infectious Diseases and Pneumophtisiology, Timisoara, Romania.,Doctoral School, Victor Babes University of Medicine and Pharmacy Timisoara, Timisoara, Romania.,Center for Ethics in Human Genetic Identifications, Victor Babes University of Medicine and Pharmacy Timisoara, Timisoara, Romania
| | - Camelia Oana Muresan
- Center for Ethics in Human Genetic Identifications, Victor Babes University of Medicine and Pharmacy Timisoara, Timisoara, Romania.,Discipline of Forensic Medicine, Bioethics, Deontology and Medical Law, Victor Babes University of Medicine and Pharmacy Timisoara, Timisoara, Romania
| | - Cristina Tudoran
- Discipline of Internal Medicine II, Victor Babes University of Medicine and Pharmacy Timisoara, Timisoara, Romania.,Center of Molecular Research in Nephrology and Vascular Disease, Victor Babes University of Medicine and Pharmacy Timisoara, Timisoara, Romania
| | - Monica Licker
- Discipline of Microbiology, Victor Babes University of Medicine and Pharmacy Timisoara, Timisoara, Romania.,Multidisciplinary Research Centre on Antimicrobial Resistance, Victor Babes University of Medicine and Pharmacy Timisoara, Timisoara, Romania
| | - Ruxandra Laza
- Discipline of Infectious Diseases, Victor Babes University of Medicine and Pharmacy Timisoara, Timisoara, Romania.,Victor Babes Clinical Hospital of Infectious Diseases and Pneumophtisiology, Timisoara, Romania
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15
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Hosseini P, Fallahi MS, Erabi G, Pakdin M, Zarezadeh SM, Faridzadeh A, Entezari S, Ansari A, Poudineh M, Deravi N. Multisystem Inflammatory Syndrome and Autoimmune Diseases Following COVID-19: Molecular Mechanisms and Therapeutic Opportunities. Front Mol Biosci 2022; 9:804109. [PMID: 35495619 PMCID: PMC9046575 DOI: 10.3389/fmolb.2022.804109] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 03/14/2022] [Indexed: 12/13/2022] Open
Abstract
Coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2), has led to huge concern worldwide. Some SARS-CoV-2 infected patients may experience post–COVID-19 complications such as multisystem inflammatory syndrome, defined by symptoms including fever and elevated inflammatory markers (such as elevation of C reactive protein (CRP), erythrocyte sedimentation rate, fibrinogen, procalcitonin test, D-dimer, ferritin, lactate dehydrogenase or IL-6, presence of neutrophilia, lymphopenia, decreased albumin, and multiple organ dysfunction). Post–COVID-19 complications may also manifest as autoimmune diseases such as Guillain-Barré syndrome and systemic lupus erythematosus. Signaling disorders, increased inflammatory cytokines secretion, corticosteroid use to treat COVID-19 patients, or impaired immune responses are suggested causes of autoimmune diseases in these patients. In this review, we discuss the molecular and pathophysiological mechanisms and therapeutic opportunities for multisystem inflammatory syndrome and autoimmune diseases following SARS-CoV-2 infection with the aim to provide a clear view for health care providers and researchers.
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Affiliation(s)
- Parastoo Hosseini
- Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
- Research Center for Clinical Virology, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Gisou Erabi
- Student Research Committee, School of Medicine, Urmia University of Medical Sciences, Urmia, Iran
| | - Majid Pakdin
- Student Research Committee, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | | | - Arezoo Faridzadeh
- Department of Immunology and Allergy, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
- Immunology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Sarina Entezari
- Student Research Committee, School of Allied Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Arina Ansari
- Student Research Committee, School of Medicine, North Khorasan University of Medical Sciences, Bojnurd, Iran
| | | | - Niloofar Deravi
- Student Research Committee, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- *Correspondence: Niloofar Deravi,
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16
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Davoodian A, Umeh C, Novatcheva E, Sassi GP, Ahaneku H, Kundu A. Severe Immune Thrombocytopenia Post-COVID-19: A Case Report. Cureus 2021; 13:e19544. [PMID: 34934562 PMCID: PMC8668258 DOI: 10.7759/cureus.19544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/13/2021] [Indexed: 11/17/2022] Open
Abstract
Immune thrombocytopenia, also called idiopathic thrombocytopenic purpura, is a common cause of thrombocytopenia after viral infections. Even in the second year of the coronavirus disease 2019 (COVID-19) pandemic, our body of knowledge regarding the diverse symptoms and complications of the virus continues to grow and evolve. We present a case of a 48-year-old African American male who came into the emergency department with severe left foot pain. A platelet count of 7x103/mL was incidentally found on complete blood count (CBC) during the patient's initial workup. The patient had previously been hospitalized for COVID-19 five weeks prior. Further workup did not support any etiology of his thrombocytopenia. Therefore, we gave a presumed diagnosis of idiopathic thrombocytopenic purpura secondary to COVID-19. The patient was treated with corticosteroid resulting in improvement in his platelet count.
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Affiliation(s)
| | | | | | | | | | - Ankur Kundu
- Internal Medicine, Hemet Global Medical Center, Hemet, USA
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17
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A rare case of absolute thrombocytopaenia in a COVID-19 patient: Case report. Ann Med Surg (Lond) 2021; 72:103097. [PMID: 34840780 PMCID: PMC8607684 DOI: 10.1016/j.amsu.2021.103097] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 11/19/2021] [Accepted: 11/20/2021] [Indexed: 11/29/2022] Open
Abstract
Introduction Thrombocytopaenia, one of the most common haematological disorders worldwide, is characterised by platelet counts <150,000/mm3. Patients with coronavirus disease (COVID-19) were found to commonly exhibit haematological abnormalities, often with mild forms of thrombocytopaenia. Absolute thrombocytopaenia tends to be rare among these patients and is believed to be secondary to immune-induced thrombocytopaenia. Case presentation A 53-y-old man presented with fever and generalised body ache that persisted for a few days. His polymerase chain reaction test was positive for COVID-19, for which he was treated with acetaminophen, levofloxacin, and favipiravir. On the third day of treatment, he noticed bruising and bleeding, mainly in the oral cavity, with clot formation. A complete blood picture (CBP) revealed severe thrombocytopaenia with an almost-zero count. Prednisone 1 mg/kg/d and frequent doses of intravenous platelet transfusion were administered as rescue therapy to prevent fatal bleeding. The patient was able to recover. Clinical discussion Immune thrombocytopaenia should be considered in patients presenting with bleeding tendencies after severe acute respiratory syndrome coronavirus 2 infection. Serial CBP is recommended for vulnerable patients, especially during the second and third weeks of hospitalisation, for the early detection and prevention of life-threatening COVID-19 complications. Conclusions Absolute thrombocytopaenia is a rare condition. Such a condition should be considered in patients presenting with bleeding tendencies with severe Covid-19 infection. With early diagnosis and appropriate treatment, patients’ lives can be saved. Absolute thrombocytopaenia is a rare condition. Such a condition should be considered in patients presenting with bleeding tendencies with severe Covid-19 infection. Prednisone 1 mg/kg/d and intravenous platelet transfusion should be considered as rescue therapy to prevent fatal bleeding.
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18
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Dijk WEMV, Schutgens REG. Relapse of immune thrombocytopenia after COVID-19 vaccination. Eur J Haematol 2021; 108:84-85. [PMID: 34591991 PMCID: PMC8652889 DOI: 10.1111/ejh.13713] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 09/29/2021] [Indexed: 12/04/2022]
Affiliation(s)
- Wobke E M van Dijk
- Center for Benign Hematology, Thrombosis and Hemostasis, Van Creveldkliniek, University Medical Center Utrecht, University Utrecht, Utrecht, The Netherlands
| | - Roger E G Schutgens
- Center for Benign Hematology, Thrombosis and Hemostasis, Van Creveldkliniek, University Medical Center Utrecht, University Utrecht, Utrecht, The Netherlands
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19
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Yamamoto K, Mashiba T, Takano K, Suzuki T, Kami M, Takita M, Kusumi E, Mizuno Y, Hamaki T. A Case of Exacerbation of Subclinical Hyperthyroidism after First Administration of BNT162b2 mRNA COVID-19 Vaccine. Vaccines (Basel) 2021; 9:1108. [PMID: 34696214 PMCID: PMC8538620 DOI: 10.3390/vaccines9101108] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 09/25/2021] [Accepted: 09/27/2021] [Indexed: 01/08/2023] Open
Abstract
COVID-19 vaccines are the most critical measure for controlling the COVID-19 pandemic; however, we have little information on their complications. We experienced a case of a patient who developed hyperthyroidism complicated with atrial fibrillation and heart failure on the sixth day after the first dose of COVID-19 vaccination. This case report shows the importance of considering hyperthyroidism as a possible complication after COVID-19 vaccination.
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Affiliation(s)
- Kana Yamamoto
- Department of Reproductive, Developmental and Aging Sciences, Graduate School of Medicine, University of Tokyo, 4-6-1 Shirokanedai, Minato, Tokyo 108-0071, Japan
- Department of Internal Medicine, Navitas Clinic Tachikawa, 3-1-1 Shibasakicho 4th Floor of Ecute Tachikawa, Tachikawa, Tokyo 190-0023, Japan; (M.T.); (E.K.)
| | - Takahisa Mashiba
- Department of General Internal Medicine, Tokyo Bay Urayasu Ichikawa Medical Center, 3-4-32 Todaijima, Urayasu, Chiba 279-0001, Japan;
| | - Keisuke Takano
- Department of Endocrinology, Tokyo Bay Urayasu Ichikawa Medical Center, 3-4-32 Todaijima, Urayasu, Chiba 279-0001, Japan; (K.T.); (T.S.)
| | - Toshihiko Suzuki
- Department of Endocrinology, Tokyo Bay Urayasu Ichikawa Medical Center, 3-4-32 Todaijima, Urayasu, Chiba 279-0001, Japan; (K.T.); (T.S.)
| | - Masahiro Kami
- Department of Internal Medicine, Navitas Clinic Shinjuku, 4-1-6 Shinjuku 7th Floor of Newoman Bldg, Shinjuku, Tokyo 160-0022, Japan; (M.K.); (T.H.)
- Department of Internal Medicine, Medical Governance Research Institute, 2-12-13-201 Takanawa, Minato, Tokyo 108-0074, Japan
| | - Morihito Takita
- Department of Internal Medicine, Navitas Clinic Tachikawa, 3-1-1 Shibasakicho 4th Floor of Ecute Tachikawa, Tachikawa, Tokyo 190-0023, Japan; (M.T.); (E.K.)
| | - Eiji Kusumi
- Department of Internal Medicine, Navitas Clinic Tachikawa, 3-1-1 Shibasakicho 4th Floor of Ecute Tachikawa, Tachikawa, Tokyo 190-0023, Japan; (M.T.); (E.K.)
| | - Yasuhiro Mizuno
- Department of Gastroenterology, Marru-Clinic Yokosuka, 1-8-7 Yonegahamadori, Yokosuka 238-0011, Kanagawa, Japan;
| | - Tamae Hamaki
- Department of Internal Medicine, Navitas Clinic Shinjuku, 4-1-6 Shinjuku 7th Floor of Newoman Bldg, Shinjuku, Tokyo 160-0022, Japan; (M.K.); (T.H.)
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20
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Gaunt ER, Mabbott NA. The clinical correlates of vaccine-induced immune thrombotic thrombocytopenia after immunisation with adenovirus vector-based SARS-CoV-2 vaccines. IMMUNOTHERAPY ADVANCES 2021; 1:ltab019. [PMID: 34557868 PMCID: PMC8385946 DOI: 10.1093/immadv/ltab019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/04/2021] [Accepted: 08/16/2021] [Indexed: 12/13/2022] Open
Abstract
We are at a critical stage in the COVID-19 pandemic where vaccinations are being rolled out globally, in a race against time to get ahead of the SARS-CoV-2 coronavirus and the emergence of more highly transmissible variants. A range of vaccines have been created and received either emergency approval or full licensure. To attain the upper hand, maximum vaccine synthesis, deployment, and uptake as rapidly as possible is essential. However, vaccine uptake, particularly in younger adults is dropping, at least in part fuelled by reports of rare complications associated with specific vaccines. This review considers how vaccination with adenovirus vector-based vaccines against the SARS-CoV-2 coronavirus might cause rare cases of thrombosis and thrombocytopenia in some recipients. A thorough understanding of the underlying cellular and molecular mechanisms that mediate this syndrome may help to identify methods to prevent these very rare, but serious side effects. This will also help facilitate the identification of those at highest risk from these outcomes, so that we can work towards a stratified approach to vaccine deployment to mitigate these risks.
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Affiliation(s)
- Eleanor R Gaunt
- The Roslin Institute & Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush, Midlothian EH25 9RG, UK
| | - Neil A Mabbott
- The Roslin Institute & Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush, Midlothian EH25 9RG, UK
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