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Trisolini SM, Laganà A, Capria S. Immune Thrombotic Thrombocytopenic Purpura: Pathophysiology, Diagnosis, Therapy and Open Issues. Mediterr J Hematol Infect Dis 2024; 16:e2024060. [PMID: 38984099 PMCID: PMC11232686 DOI: 10.4084/mjhid.2024.060] [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: 11/21/2023] [Accepted: 06/19/2024] [Indexed: 07/11/2024] Open
Abstract
Immune thrombotic thrombocytopenic purpura (iTTP) is a life-threatening thrombotic microangiopathy characterized by microangiopathic hemolytic anemia, thrombocytopenia, and ischemic end-organ injury due to microvascular platelet-rich thrombi. iTTP pathophysiology is based on a severe ADAMTS13 deficiency, the specific von Willebrand factor (vWF)-cleaving protease, due to anti-ADAMTS13 autoantibodies. Early diagnosis and treatment reduce the mortality. Frontline therapy includes daily plasma exchange (PEX) with fresh frozen plasma replacement and immunosuppression with corticosteroids. Caplacizumab has recently been added to frontline therapy. Caplacizumab is a nanobody that binds to the A1 domain of vWF, blocking the interaction of ultra-large vWF multimers with the platelet and thereby preventing the formation of platelet-rich thrombi. Caplacizumab reduces mortality due to ischemic events, refractoriness, and exacerbations after PEX discontinuation. Until now, the criteria for response to treatment mainly took into account the normalization of platelet count and discontinuation of PEX; with the use of caplacizumab leading to rapid normalization of platelet count, it has been necessary to redefine the response criteria, taking into account also the underlying autoimmune disease. Monitoring of ADAMTS13 activity is important to identify cases with a low value of activity (<10IU/L), requiring the optimization of immunosuppressive therapy with the addition of Rituximab. Rituximab is effective in patients with refractory disease or relapsing disease. Currently, the use of Rituximab has expanded, both in frontline treatment and during follow-up, as a pre-emptive approach. Some patients do not achieve ADAMTS13 remission following the acute phase despite steroids and rituximab treatment, requiring an individualized immunosuppressive approach to prevent clinical relapse. In iTTP, there is an increased risk of venous thrombotic events (VTEs) as well as arterial thrombotic events, and most occur after platelet normalization. Until now, there has been no consensus on the use of pharmacological thromboprophylaxis in patients on caplacizumab because the drug is known to increase bleeding risk.
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Affiliation(s)
- Silvia Maria Trisolini
- Hematology, Department of Translational and Precision Medicine; "Sapienza" University of Rome, Italy
| | - Alessandro Laganà
- Resident Doctor at the Department of Hematology, University "Sapienza" of Rome, Rome, Italy
| | - Saveria Capria
- Hematology, Department of Translational and Precision Medicine; "Sapienza" University of Rome, Italy
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2
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Favaloro EJ. The Role of the von Willebrand Factor Collagen-Binding Assay (VWF:CB) in the Diagnosis and Treatment of von Willebrand Disease (VWD) and Way Beyond: A Comprehensive 36-Year History. Semin Thromb Hemost 2024; 50:43-80. [PMID: 36807283 DOI: 10.1055/s-0043-1763259] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
The von Willebrand factor (VWF) collagen binding (VWF:CB) assay was first reported for use in von Willebrand diagnostics in 1986, by Brown and Bosak. Since then, the VWF:CB has continued to be used to help diagnose von Willebrand disease (VWD) (correctly) and also to help assign the correct subtype, as well as to assist in the monitoring of VWD therapy, especially desmopressin (DDAVP). However, it is important to recognize that the specific value of any VWF:CB is predicated on the use of an optimized VWF:CB, and that not all VWF:CB assays are so optimized. There are some good commercial assays available, but there are also some "not-so-good" commercial assays available, and these may continue to give the VWF:CB "a bad reputation." In addition to VWD diagnosis and management, the VWF:CB found purpose in a variety of other applications, from assessing ADAMTS13 activity, to investigation into acquired von Willebrand syndrome (especially as associated with use of mechanical circulatory support or cardiac assist devices), to assessment of VWF activity in disease states in where an excess of high-molecular-weight VWF may accumulate, and lead to increased (micro)thrombosis risk (e.g., coronavirus disease 2019, thrombotic thrombocytopenic purpura). The VWF:CB turns 37 in 2023. This review is a celebration of the utility of the VWF:CB over this nearly 40-year history.
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Affiliation(s)
- Emmanuel J Favaloro
- Department of Haematology, Institute of Clinical Pathology and Medical Research (ICPMR), Sydney Centres for Thrombosis and Haemostasis, NSW Health Pathology, Westmead Hospital, Westmead, New South Wales, Australia
- School of Dentistry and Medical Sciences, Faculty of Science and Health, Charles Sturt University, Wagga Wagga, New South Wales, Australia
- School of Medical Sciences, Faculty of Medicine and Health, University of Sydney, Westmead Hospital, Westmead, New South Wales, Australia
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3
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Awamura T, Nakasone ES, Gangcuangco LM, Subia NT, Bali AJ, Chow DC, Shikuma CM, Park J. Platelet and HIV Interactions and Their Contribution to Non-AIDS Comorbidities. Biomolecules 2023; 13:1608. [PMID: 38002289 PMCID: PMC10669125 DOI: 10.3390/biom13111608] [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: 10/05/2023] [Revised: 10/29/2023] [Accepted: 10/31/2023] [Indexed: 11/26/2023] Open
Abstract
Platelets are anucleate cytoplasmic cell fragments that circulate in the blood, where they are involved in regulating hemostasis. Beyond their normal physiologic role, platelets have emerged as versatile effectors of immune response. During an infection, cell surface receptors enable platelets to recognize viruses, resulting in their activation. Activated platelets release biologically active molecules that further trigger host immune responses to protect the body against infection. Their impact on the immune response is also associated with the recruitment of circulating leukocytes to the site of infection. They can also aggregate with leukocytes, including lymphocytes, monocytes, and neutrophils, to immobilize pathogens and prevent viral dissemination. Despite their host protective role, platelets have also been shown to be associated with various pathophysiological processes. In this review, we will summarize platelet and HIV interactions during infection. We will also highlight and discuss platelet and platelet-derived mediators, how they interact with immune cells, and the multifaceted responsibilities of platelets in HIV infection. Furthermore, we will give an overview of non-AIDS comorbidities linked to platelet dysfunction and the impact of antiretroviral therapy on platelet function.
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Affiliation(s)
- Thomas Awamura
- Department of Tropical Medicine, Medical Microbiology, and Pharmacology, John A. Burns School Medicine, University of Hawai‘i at Mānoa, Honolulu, HI 96813, USA; (T.A.); (N.T.S.); (A.-J.B.)
| | - Elizabeth S. Nakasone
- University of Hawai‘i Cancer Center, University of Hawai‘i at Mānoa, Honolulu, HI 96813, USA;
- Department of Medicine, John A. Burns School of Medicine, University of Hawai‘i at Mānoa, Honolulu, HI 96813, USA;
| | - Louie Mar Gangcuangco
- Hawai‘i Center for AIDS, John A. Burns School of Medicine, University of Hawai‘i at Mānoa, Honolulu, HI 96813, USA; (L.M.G.); (C.M.S.)
| | - Natalie T. Subia
- Department of Tropical Medicine, Medical Microbiology, and Pharmacology, John A. Burns School Medicine, University of Hawai‘i at Mānoa, Honolulu, HI 96813, USA; (T.A.); (N.T.S.); (A.-J.B.)
| | - Aeron-Justin Bali
- Department of Tropical Medicine, Medical Microbiology, and Pharmacology, John A. Burns School Medicine, University of Hawai‘i at Mānoa, Honolulu, HI 96813, USA; (T.A.); (N.T.S.); (A.-J.B.)
| | - Dominic C. Chow
- Department of Medicine, John A. Burns School of Medicine, University of Hawai‘i at Mānoa, Honolulu, HI 96813, USA;
- Hawai‘i Center for AIDS, John A. Burns School of Medicine, University of Hawai‘i at Mānoa, Honolulu, HI 96813, USA; (L.M.G.); (C.M.S.)
| | - Cecilia M. Shikuma
- Hawai‘i Center for AIDS, John A. Burns School of Medicine, University of Hawai‘i at Mānoa, Honolulu, HI 96813, USA; (L.M.G.); (C.M.S.)
| | - Juwon Park
- Department of Tropical Medicine, Medical Microbiology, and Pharmacology, John A. Burns School Medicine, University of Hawai‘i at Mānoa, Honolulu, HI 96813, USA; (T.A.); (N.T.S.); (A.-J.B.)
- Hawai‘i Center for AIDS, John A. Burns School of Medicine, University of Hawai‘i at Mānoa, Honolulu, HI 96813, USA; (L.M.G.); (C.M.S.)
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Scully M, Rayment R, Clark A, Westwood JP, Cranfield T, Gooding R, Bagot CN, Taylor A, Sankar V, Gale D, Dutt T, McIntyre J, Lester W. A British Society for Haematology Guideline: Diagnosis and management of thrombotic thrombocytopenic purpura and thrombotic microangiopathies. Br J Haematol 2023; 203:546-563. [PMID: 37586700 DOI: 10.1111/bjh.19026] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 07/21/2023] [Accepted: 07/26/2023] [Indexed: 08/18/2023]
Abstract
The objective of this guideline is to provide healthcare professionals with clear, up-to-date and practical guidance on the management of thrombotic thrombocytopenic purpura (TTP) and related thrombotic microangiopathies (TMAs), including complement-mediated haemolytic uraemic syndrome (CM HUS); these are defined by thrombocytopenia, microangiopathic haemolytic anaemia (MAHA) and small vessel thrombosis. Within England, all TTP cases should be managed within designated regional centres as per NHSE commissioning for highly specialised services.
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Affiliation(s)
- M Scully
- Department of Haematology, UCLH and Haematology Programme, University College London Hospitals Biomedical Research Centre, National Institute for Health Research, London, UK
| | - R Rayment
- Department of Haematology, University Hospital of Wales, Cardiff, UK
| | - A Clark
- Department of Haematology, University Hospitals Bristol NHS Foundation Trust, Bristol, UK
| | | | - T Cranfield
- Department of Haematology, Portsmouth Hospitals University NHS Trust, Portsmouth, UK
| | - R Gooding
- Haematology Department, Belfast City Hospital, Belfast H&SC Trust, Belfast, UK
| | - C N Bagot
- Glasgow Royal Infirmary, Glasgow, UK
| | - A Taylor
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - V Sankar
- Department of Critical Care Medicine, Liverpool University Hospitals NHS Foundation Trust, Liverpool, UK
| | - D Gale
- Department of Renal Medicine, University College London, London, UK
| | - T Dutt
- Liverpool University Hospitals NHS Foundation Trust, Liverpool, UK
| | | | - W Lester
- Department of Haematology, University Hospitals Birmingham, Birmingham, UK
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Moola Y, Cassimjee Z, Dayal C, Chiba S, Ajayi A, Davies M. Thrombotic thrombocytopaenic purpura in the era of HIV: A single-centre experience. South Afr J HIV Med 2023; 24:1504. [PMID: 37928502 PMCID: PMC10623642 DOI: 10.4102/sajhivmed.v24i1.1504] [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] [Received: 05/13/2023] [Accepted: 08/03/2023] [Indexed: 11/07/2023] Open
Abstract
Background Thrombotic thrombocytopaenia purpura (TTP) is a rare disorder which carries a high mortality. HIV is an important cause of TTP. Objectives We assessed the presentation and response to plasma exchange (PEX) by HIV status. Method A single-centre retrospective review of all patients receiving PEX for TTP between 01 January 2010 and 31 December 2019 was undertaken. Demographics and presenting parameters were compared between HIV-associated TTP and other aetiologies using Mann-Whitney U and Kruskal Wallis analysis of variance testing, as appropriate. The effect of aetiology and presenting parameters on PEX duration was modelled using Cox proportional hazards; effect of these variables on mortality and residual renal dysfunction in survivors was analysed using stepwise multivariate regression. Results Uncontrolled HIV infection was the commonest cause (81.9%) of TTP in the 83 patients identified. Thrombocytopaenia was more severe and neurological deficit more frequent in HIV-associated TTP; but renal dysfunction was milder in this group. Aetiology did not influence mortality risk. Aetiological category and presenting parameters did not predict PEX duration. Residual renal dysfunction was less frequent in survivors of HIV-associated TTP. Conclusion HIV is an important cause of TTP in the local context. Haematological and neurological involvement are more severe in HIV-associated TTP. Acceptable survival rates are achievable with PEX even in advanced HIV infection; renal sequalae are less common in this group.
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Affiliation(s)
- Yusuf Moola
- Department of Internal Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Zaheera Cassimjee
- Department of Internal Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- Division of Nephrology, Helen Joseph Hospital, Johannesburg, South Africa
| | - Chandni Dayal
- Department of Internal Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- Division of Nephrology, Helen Joseph Hospital, Johannesburg, South Africa
| | - Sheetal Chiba
- Department of Internal Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- Division of Nephrology, Helen Joseph Hospital, Johannesburg, South Africa
| | - Adekunle Ajayi
- Department of Internal Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- Division of Nephrology, Helen Joseph Hospital, Johannesburg, South Africa
| | - Malcolm Davies
- Department of Internal Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- Division of Nephrology, Helen Joseph Hospital, Johannesburg, South Africa
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Bruzzese A, Vigna E, Terzi D, Greco S, Martino EA, Vangeli V, Mendicino F, Lucia E, Olivito V, Labanca C, Morelli R, Neri A, Morabito F, Zinno F, Mastroianni A, Gentile M. Safe and Effective Administration of Caplacizumab in COVID-19-Associated Thrombotic Thrombocytopenic Purpura. Hematol Rep 2023; 15:448-453. [PMID: 37489376 PMCID: PMC10366750 DOI: 10.3390/hematolrep15030046] [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: 03/27/2023] [Revised: 04/28/2023] [Accepted: 07/12/2023] [Indexed: 07/26/2023] Open
Abstract
Thrombotic thrombocytopenic purpura (TTP) is a potentially life-threatening, rare acute thrombotic microangiopathy (TMA), caused by a severe ADAMTS13 deficiency. As the COVID-19 pandemic rapidly spread around the globe, much data about the pathogenicity of this virus were published. Soon after the detection of the first cases of COVID-19, it was clear that there was a wide range of COVID coagulopathy manifestations, such as deep venous thrombosis, pulmonary thromboembolism, and thrombotic microangiopathies. In the literature, little data have been reported about the association between TTP and COVID-19, and the treatment of COVID-19-associated TTP is still under debate. Here we present the case of a 46-year-old woman who developed a COVID-associated TTP, successfully treated with plasma exchange (PEX), steroids, and caplacizumab.
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Affiliation(s)
| | - Ernesto Vigna
- Hematology Unit, Azienda Ospedaliera Annunziata, 87100 Cosenza, Italy
| | - Dario Terzi
- Immunohaematology Section, Annunziata Hospital, 87100 Cosenza, Italy
| | - Sonia Greco
- Infectious & Tropical Diseases Unit, Annunziata Hospital, 87100 Cosenza, Italy
| | | | - Valeria Vangeli
- Infectious & Tropical Diseases Unit, Annunziata Hospital, 87100 Cosenza, Italy
| | | | - Eugenio Lucia
- Hematology Unit, Azienda Ospedaliera Annunziata, 87100 Cosenza, Italy
| | - Virginia Olivito
- Hematology Unit, Azienda Ospedaliera Annunziata, 87100 Cosenza, Italy
| | - Caterina Labanca
- Hematology Unit, Azienda Ospedaliera Annunziata, 87100 Cosenza, Italy
| | - Rosellina Morelli
- Medicine Department, "Annunziata" Hospital of Cosenza, 87100 Cosenza, Italy
| | - Antonino Neri
- Scientific Directorate IRCCS of Reggio Emilia, 42123 Reggio Emilia, Italy
| | | | - Francesco Zinno
- Immunohaematology Section, Annunziata Hospital, 87100 Cosenza, Italy
| | - Antonio Mastroianni
- Infectious & Tropical Diseases Unit, Annunziata Hospital, 87100 Cosenza, Italy
| | - Massimo Gentile
- Hematology Unit, Azienda Ospedaliera Annunziata, 87100 Cosenza, Italy
- Department of Pharmacy, Health and Nutritional Science, University of Calabria, 87036 Rende, Italy
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7
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Biswas RN, Das SS, Chakrapani A, Sen S. Induction of thrombotic thrombocytopenic purpura by dengue virus infection in a critical patient: Role of therapeutic plasma exchange. Asian J Transfus Sci 2023; 17:285-287. [PMID: 38274960 PMCID: PMC10807527 DOI: 10.4103/ajts.ajts_56_22] [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: 05/12/2022] [Revised: 05/22/2022] [Accepted: 05/29/2022] [Indexed: 11/04/2022] Open
Abstract
Thrombotic thrombocytopenic purpura (TTP) secondary to dengue fever is a very unusual occurrence. Both conditions are fatal and can result in significant mortality and morbidity if left untreated. In this case, we present a young lady who suffered dengue fever followed by microangiopathic anemia, thrombocytopenic purpura, and altered sensorium. Investigations revealed microangiopathic hemolysis; there was no evidence of disseminated intravascular coagulation. As soon as, we diagnosed the patient as having TTP, we treated her with serial plasma exchange therapy, steroids, and monoclonal antibodies such as rituximab. The patient responded very well to the treatment and completely recovered from neurological symptoms and laboratory parameters also normalized. Hence, timely diagnosis and starting appropriate treatment immediately are key factors for successful outcomes.
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Affiliation(s)
- Rathindra Nath Biswas
- Department of Transfusion Medicine, Apollo Gleneagles Hospitals, Kolkata, West Bengal, India
| | - Sudipta Sekhar Das
- Department of Transfusion Medicine, Apollo Gleneagles Hospitals, Kolkata, West Bengal, India
| | - Anupam Chakrapani
- Department of Clinical Hematology, Apollo Gleneagles Hospitals, Kolkata, West Bengal, India
| | - Subrata Sen
- Department of Transfusion Medicine, Apollo Gleneagles Hospitals, Kolkata, West Bengal, India
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González DE, Misol DD, Ordoñez NA, Zamora FAS, Millan Prada HA, Zuñiga R E, Triviño AM. Atypical hemolytic uremic syndrome in a patient with HIV treated with eculizumab: A case report. IDCases 2023; 31:e01692. [PMID: 36699966 PMCID: PMC9867953 DOI: 10.1016/j.idcr.2023.e01692] [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] [Received: 06/28/2022] [Revised: 12/30/2022] [Accepted: 01/11/2023] [Indexed: 01/15/2023] Open
Abstract
Thrombotic microangiopathy defines a group of pathologies characterized by microvascular dysfunction with the concurrence of microangiopathic hemolytic anemia, thrombocytopenia, and organ damage. It represents the most frequent microvascular manifestation of human immunodeficiency virus (HIV) infection. We report the case of a man in the seventh decade of life with a recent diagnosis of infection by HIV, who develops hemolytic uremic syndrome, requiring continuous renal replacement therapy and plasma replacement therapy, without response, ADAMTS13 with preserved activity, ruling out other etiologies (infectious, metabolic, and genetic) with successful response to eculizumab.
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Affiliation(s)
- Danilo E.Trujillo González
- Universidad del Rosario, Bogotá, Colombia,Correspondence to: La Cardio – Fundación Cardioinfantil, Calle 163A # 13B-60, Bogotá, Colombia.
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Gómez-Seguí I, Pascual Izquierdo C, Mingot Castellano ME, de la Rubia Comos J. An update on the pathogenesis and diagnosis of thrombotic thrombocytopenic purpura. Expert Rev Hematol 2023; 16:17-32. [PMID: 36537217 DOI: 10.1080/17474086.2023.2159803] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
INTRODUCTION Severe ADAMTS13 deficiency defines thrombotic thrombocytopenic purpura (TTP). ADAMTS13 is responsible for VWF cleavage. In the absence of this enzyme, widespread thrombi formation occurs, causing microangiopathic anemia and thrombocytopenia and leading to ischemic organ injury. Understanding ADAMTS13 function is crucial to diagnose and manage TTP, both in the immune and hereditary forms. AREAS COVERED The role of ADAMTS13 in coagulation homeostasis and the consequences of its deficiency are detailed. Other factors that modulate the consequences of ADAMTS13 deficiency are explained, such as complement system activation, genetic predisposition, or the presence of an inflammatory status. Clinical suspicion of TTP is crucial to start prompt treatment and avoid mortality and sequelae. Available techniques to diagnose this deficiency and detect autoantibodies or gene mutations are presented, as they have become faster and more available in recent years. EXPERT OPINION A better knowledge of TTP pathophysiology is leading to an improvement in diagnosis and follow-up, as well as a customized treatment in patients with TTP. This scenario is necessary to define the role of new targeted therapies already available or coming soon and the need to better diagnose and monitor at the molecular level the evolution of the disease.
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Affiliation(s)
- Inés Gómez-Seguí
- Servicio de Hematología y Hemoterapia, Hospital Universitari i Politècnic La Fe, Avda, Fernando Abril Martorell, 106, 46026, Valencia, Spain
| | - Cristina Pascual Izquierdo
- Servicio de Hematología y Hemoterapia, Hospital General Universitario Gregorio Marañón, Instituto de Investigación Gregorio Marañón, Calle Dr. Esquerdo 46, 28007, Madrid, Spain
| | - María Eva Mingot Castellano
- Servicio de Hematología, Área de Banco de Sangre y Establecimiento de Tejidos, Hospital Universitario Virgen del Rocío, Calle Manuel Siurot s/n, 41013, Sevilla, Spain
| | - Javier de la Rubia Comos
- Servicio de Hematología y Hemoterapia, Hospital Universitari i Politècnic La Fe, Avda, Fernando Abril Martorell, 106, 46026, Valencia, Spain.,School of Medicine and Dentistry, Catholic University of Valencia, Valencia, Spain
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Boland JL, Valburg C, Rogers H, Poon AN. A Thrombotic Thrombocytopenic Purpura-Like Syndrome in HIV and Streptococcus pneumoniae Meningitis. Cureus 2022; 14:e30966. [DOI: 10.7759/cureus.30966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/31/2022] [Indexed: 11/07/2022] Open
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Louw S, Jacobson BF, Wiggill TM, Chapanduka Z, Sarah Mayne E. HIV-associated thrombotic thrombocytopenic purpura (HIV-TTP): A practical guide and review of the literature. HIV Med 2022; 23:1033-1040. [PMID: 35373442 PMCID: PMC9790193 DOI: 10.1111/hiv.13305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 03/03/2022] [Accepted: 03/13/2022] [Indexed: 12/30/2022]
Abstract
BACKGROUND Thrombotic thrombocytopenic purpura (TTP), a serious thrombotic microangiopathy (TMA), is prevalent in the South African HIV-infected population. The exact pathogenesis of HIV-associated TTP (HIV-TTP) is however still unclear with diagnostic and therapeutic inconsistancies. METHODS A systematic review of the published literature regarding HIV-TTP was performed. RESULTS HIV-TTP is still associated with significant morbidity and mortality in Africa despite the availability of anti-retroviral therpy (ART). Diagnosis of HIV-TTP requires the presence of a micro-angiopathic haemolytic anaemia with significant red blood cell schistocytes and thrombocytopenia in the absence of another TMA but background activation of the coagulation system and inflammation in HIV infected people can result in diagnostic anbiguity. Plasma therapy in the form of infusion or exchange is successful but expensive, associated with side-effects and not widely available. Adjuvant immunosuppression therapy may of benefit in patients with HIV-TTP and ART must always be optimised. Endothelial dysfunction caused by chronic inflammation and complement activation most likely contributes to the development of HIV-TTP. CONCLUSION The role of adjuvant immunomodulating therpy, the therapeutic targets and pathogenic contribution from endothelial dysfunction in HIV-TTP requires further investigation.
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Affiliation(s)
- Susan Louw
- Department of Molecular Medicine and HaematologyFaculty of Health SciencesUniversity of Witwatersrand and National Health Laboratory ServiceJohannesburgSouth Africa
| | - Barry Frank Jacobson
- Department of Molecular Medicine and HaematologyFaculty of Health SciencesUniversity of Witwatersrand and National Health Laboratory ServiceJohannesburgSouth Africa
| | - Tracey Monica Wiggill
- Department of Molecular Medicine and HaematologyFaculty of Health SciencesUniversity of Witwatersrand and National Health Laboratory ServiceJohannesburgSouth Africa
| | - Zivanai Chapanduka
- Department of HaematologyUniversity of Stellenbosch and National Health Laboratory ServiceCape TownSouth Africa
| | - Elizabeth Sarah Mayne
- Department of ImmunologyFaculty of Health SciencesUniversity of Witwatersrand and National Health Laboratory ServiceJohannesburgSouth Africa
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12
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Schapkaitz E, Jacobson BF, Libhaber E. Pregnancy Related Venous Thromboembolism-Associated with HIV Infection and Antiretroviral Therapy. Semin Thromb Hemost 2022; 49:355-363. [PMID: 36055274 DOI: 10.1055/s-0042-1754391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
Human immunodeficiency virus (HIV) infection in pregnancy is associated with substantial morbidity and mortality. Improved access to effective antiretroviral therapy (ART) has shifted the spectrum of pregnancy-related complications among HIV-infected pregnant women. In addition to placental vascular complications and preterm delivery, increased rates of venous thromboembolism (VTE) have been described. HIV infection is characterized by immune activation, inflammation, and endothelial dysfunction, which contribute to the activation of coagulation and its prothrombotic consequences. Indeed, activated coagulation factors have been reported to be increased and natural anticoagulants reduced in HIV. Several mechanisms for this persistent prothrombotic balance on ART have been identified. These may include: co-infections, immune recovery, and loss of the gastrointestinal mucosal integrity with microbial translocation. In addition to the direct effects of HIV and ART, traditional venous and obstetric risk factors also contribute to the risk of VTE. A research priority has been to understand the mechanisms of VTE in HIV-infected pregnant women receiving suppressive ART and to translate this into HIV-specific thromboprophylaxis recommendations. Management requires a multidisciplinary approach and further studies are indicated to guide the prevention and management of pregnancy-associated VTE in this population. The current review describes the epidemiology, mechanisms, and management of VTE in HIV-infected women in pregnancy and the postpartum period.
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Affiliation(s)
- Elise Schapkaitz
- Department of Molecular Medicine and Hematology, University of Witwatersrand, Johannesburg, South Africa
| | - Barry F Jacobson
- Department of Molecular Medicine and Hematology, University of Witwatersrand, Johannesburg, South Africa
| | - Elena Libhaber
- Department of Research Methodology and Statistics, University of Witwatersrand, Johannesburg, South Africa
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Thrombotic thrombocytopenic purpura (TTP) in Human immunodeficiency virus (HIV) infected patients: New twists on an old disease. AIDS 2022; 36:1345-1354. [PMID: 35608117 DOI: 10.1097/qad.0000000000003257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Investigate the presence of inflammation, endothelial dysfunction and complement activation in patients with HIV-associated thrombotic thrombocytopenic purpura (HIV-TTP) to support the hypothesis that these processes probably contribute to the development of this thrombotic microangiopathy. DESIGN A prospective, investigational cohort study of 35 consecutive patients diagnosed with HIV-associated TTP presenting to three academic, tertiary care hospitals in Johannesburg, South Africa over 2 years. METHODS The patients with HIV-TTP received therapeutic plasma therapy and supportive treatment. Demographic data, the results of routine investigations and patient outcomes were recorded. Peripheral blood samples were collected prior to and on completion of plasma therapy and the following additional parameters were assessed at both time points: activity of the von Willebrand factor (VWF) cleaving protease, a-disintegrin-and-metalloproteinase-with-thrombospondin-motifs 13 (ADAMTS-13) and the presence of ADAMTS-13 autoantibodies, levels of pro-inflammatory cytokines, interleukin-6 and tumour necrosis factor-alpha, and two endothelial cell adhesion molecules. Complement activation was assessed by sequential measurement of C3 and C4 as well as levels of the complement inhibitor, factor H. RESULTS The inflammatory and endothelial activation markers were significantly (P < 0.001) elevated in the cohort of patients prior to plasma therapy compared with levels on discharge. Complement was activated and normalized with therapy. The ADAMTS-13 levels were reduced with significant auto-antibodies to this protease at presentation. CONCLUSION Inflammation in HIV mediates endothelial damage and complement activation. This study proposes that these processes are probably contributory to the development of HIV-TTP, which can therefore be characterized in part as a complementopathy, resembling TTP-like syndrome.
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Schapkaitz E, Libhaber E, Jacobson BF, Meiring M, Büller HR. von Willebrand factor propeptide-to-antigen ratio in HIV-infected pregnancy: Evidence of endothelial activation. J Thromb Haemost 2021; 19:3168-3176. [PMID: 34409729 DOI: 10.1111/jth.15502] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 07/15/2021] [Accepted: 08/16/2021] [Indexed: 02/02/2023]
Abstract
BACKGROUND Endothelial activation has been proposed as a potential mechanism for the increased risk of venous thromboembolism (VTE) in human immunodeficiency virus (HIV)-infected pregnancy. OBJECTIVES To assess the state of endothelial activation in HIV-infected pregnancy by measuring the von Willebrand factor (VWF) propeptide-to-antigen ratio, as an index of acute endothelial activation. METHODS VWF antigen and VWF propeptide were measured in HIV-negative participants (n = 85), HIV-infected virologically suppressed participants, (n = 89) and HIV-infected participants with HIV viral load (VL) of >50 copies/ml (n = 63) in each trimester. Results were correlated with multimer patterns and a disintegrin and metalloproteinase with a thrombospondin type 1 motif, member 13 (ADAMTS-13) antigen, activity, and antibody levels. RESULTS VWF propeptide-to-antigen ratio was increased, in the first, second, and third trimester, in the HIV-infected virologically suppressed group (1.7 ± 0.7, 1.7 ± 0.4, 1.6 ± 0.5) and the HIV-infected group with VL > 50 copies/ml (1.9 ± 0.9, 1.7 ± 0.9, 1.6 ± 1.1) compared to the HIV-negative group (1.4 ± 0.6, 1.3 ± 0.4, 1.2 ± 0.3, P < .05). Increased high molecular weight multimers were observed in the HIV-infected groups, despite only a mild reduction in ADAMTS-13 activity compared to the HIV-negative group (P < .001). No correlation was observed between VWF antigen or VWF propeptide and ADAMTS-13 activity. CONCLUSION HIV-infected virologically suppressed pregnant participants showed persistent endothelial activation. Future research should focus on whether endothelial activation contributes to the excess risk of pregnancy-related VTE.
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Affiliation(s)
- Elise Schapkaitz
- Department of Molecular Medicine and Hematology, Charlotte Maxeke Johannesburg Academic Hospital National Health Laboratory System Complex and University of Witwatersrand, Johannesburg, South Africa
| | - Elena Libhaber
- Department of Research Methodology and Statistics, Faculty of Health Sciences, University of Witwatersrand Medical School, Johannesburg, South Africa
| | - Barry F Jacobson
- Department of Molecular Medicine and Hematology, Charlotte Maxeke Johannesburg Academic Hospital National Health Laboratory System Complex and University of Witwatersrand, Johannesburg, South Africa
| | - Muriel Meiring
- Department of Hematology and Cell Biology, University of Free State and National Health Laboratory Service, Bloemfontein, South Africa
| | - Harry R Büller
- Department of Vascular Medicine, Academic Medical Centre, University of Amsterdam, the Netherlands
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Laghmouchi A, Graça NAG, Voorberg J. Emerging Concepts in Immune Thrombotic Thrombocytopenic Purpura. Front Immunol 2021; 12:757192. [PMID: 34858410 PMCID: PMC8631936 DOI: 10.3389/fimmu.2021.757192] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 10/27/2021] [Indexed: 12/23/2022] Open
Abstract
Immune thrombotic thrombocytopenic purpura (iTTP) is an autoimmune disorder of which the etiology is not fully understood. Autoantibodies targeting ADAMTS13 in iTTP patients have extensively been studied, the immunological mechanisms leading to the breach of tolerance remain to be uncovered. This review addresses the current knowledge on genetic factors associated with the development of iTTP and the interplay between the patient's immune system and environmental factors in the induction of autoimmunity against ADAMTS13. HLA-DRB1*11 has been identified as a risk factor for iTTP in the Caucasian population. Interestingly, HLA-DRB1*08:03 was recently identified as a risk factor in the Japanese population. Combined in vitro and in silico MHC class II peptide presentation approaches suggest that an ADAMTS13-derived peptide may bind to both HLA-DRB1*11 and HLA-DRB1*08:03 through different anchor-residues. It is apparent that iTTP is associated with the presence of infectious microorganisms, viruses being the most widely associated with development of iTTP. Infections may potentially lead to loss of tolerance resulting in the shift from immune homeostasis to autoimmunity. In the model we propose in this review, infections disrupt the epithelial barriers in the gut or lung, promoting exposure of antigen presenting cells in the mucosa-associated lymphoid tissue to the microorganisms. This may result in breach of tolerance through the presentation of microorganism-derived peptides that are homologous to ADAMTS13 on risk alleles for iTTP.
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Affiliation(s)
| | | | - Jan Voorberg
- Department of Molecular Hematology, Sanquin-Academic Medical Center Landsteiner Laboratory, Amsterdam, Netherlands
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Șalaru DL, Adam CA, Marcu DTM, Șimon IV, Macovei L, Ambrosie L, Chirita E, Sascau RA, Statescu C. Acute myocardial infarction and extensive systemic thrombosis in thrombotic thrombocytopenic purpura: A case report and review of literature. World J Clin Cases 2021; 9:8104-8113. [PMID: 34621868 PMCID: PMC8462192 DOI: 10.12998/wjcc.v9.i27.8104] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 06/19/2021] [Accepted: 07/27/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Thrombotic thrombocytopenic purpura (TTP) is a thrombotic microangiopathy characterized by the pentad of hemolytic anemia, fever, thrombocytopenia, renal failure, and neurological dysfunction. The formation of microthrombi in the arterioles and capillaries of various organs is one of the main pathophysiological mechanisms. Clinical manifestations of cardiac involvement in TTP patients are variable. Acute myocardial infarction has been reported as a complication with TTP as the secondary thrombotic event. Its emergence as the initial thrombotic event is extremely rare.
CASE SUMMARY A 49-year-old previously healthy man was admitted for fever, typical angina chest pain 3 d prior to presentation, and newly onset left lower limb pain. The electrocardiogram illustrated ST-elevation acute myocardial infarction of the antero-lateral wall of the left ventricle. Transthoracic echocardiography depicted two large thrombi at the apex of the left ventricle and moderately reduced ejection fraction (40%). Venous Doppler ultrasound showed occlusion of the left popliteal artery. Laboratory tests showed severe thrombocytopenia, mild hemolytic anemia, elevated D-dimers, and high troponin and creatine kinase-MB. Abdominal computed tomography revealed other thrombotic sites (superior mesenteric artery, posterior aortic wall, spleen and renal infarction, and ileum necrosis). He was immediately started on steroids and addressed to surgery for acute abdominal pain. After an initial stabilization of the hematological deficit, he went into general surgery for resection of the necrotic ileum but died soon after the intervention due to multiple organ failure.
CONCLUSION Cardiac involvement in TTP patients is common, challenging and more often fatal, especially when other thrombotic complications coexist.
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Affiliation(s)
- Delia Lidia Șalaru
- Department of Cardiology, Institute of Cardiovascular Diseases, “Prof. Dr. George I.M. Georgescu,” Iasi 700503, Romania
- Internal Medicine, University of Medicine and Pharmacy, ”Grigore T. Popa Iași, Romania,” Iasi 700115, Romania
| | - Cristina Andreea Adam
- Department of Cardiology, Institute of Cardiovascular Diseases, “Prof. Dr. George I.M. Georgescu,” Iasi 700503, Romania
| | - Dragos Traian Marius Marcu
- Department of Cardiology, Institute of Cardiovascular Diseases, “Prof. Dr. George I.M. Georgescu,” Iasi 700503, Romania
- Internal Medicine, University of Medicine and Pharmacy, ”Grigore T. Popa Iași, Romania,” Iasi 700115, Romania
| | | | - Liviu Macovei
- Department of Cardiology, Institute of Cardiovascular Diseases, “Prof. Dr. George I.M. Georgescu,” Iasi 700503, Romania
- Internal Medicine, University of Medicine and Pharmacy, ”Grigore T. Popa Iași, Romania,” Iasi 700115, Romania
| | - Lucian Ambrosie
- General Surgery, ”Sf. Spiridon” Emergency Hospital Iasi, Iasi 700111, Romania
| | - Elena Chirita
- General Surgery, ”Sf. Spiridon” Emergency Hospital Iasi, Iasi 700111, Romania
| | - Radu Andy Sascau
- Department of Cardiology, Institute of Cardiovascular Diseases, “Prof. Dr. George I.M. Georgescu,” Iasi 700503, Romania
- Internal Medicine, University of Medicine and Pharmacy, ”Grigore T. Popa Iași, Romania,” Iasi 700115, Romania
| | - Cristian Statescu
- Department of Cardiology, Institute of Cardiovascular Diseases, “Prof. Dr. George I.M. Georgescu,” Iasi 700503, Romania
- Internal Medicine, University of Medicine and Pharmacy, ”Grigore T. Popa Iași, Romania,” Iasi 700115, Romania
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Thoreau B, von Tokarski F, Bauvois A, Bayer G, Barbet C, Cloarec S, Mérieau E, Lachot S, Garot D, Bernard L, Gyan E, Perrotin F, Pouplard C, Maillot F, Gatault P, Sautenet B, Rusch E, Frémeaux-Bacchi V, Vigneau C, Fakhouri F, Halimi JM. Infection in Patients with Suspected Thrombotic Microangiopathy Based on Clinical Presentation. Clin J Am Soc Nephrol 2021; 16:1355-1364. [PMID: 34497111 PMCID: PMC8729578 DOI: 10.2215/cjn.17511120] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Accepted: 06/08/2021] [Indexed: 11/23/2022]
Abstract
BACKGROUND AND OBJECTIVES In contrast to shigatoxin-associated Escherichia coli (STEC) causing hemolytic uremic syndrome, STEC-unrelated infections associated with thrombotic microangiopathy are less characterized. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS Our retrospective study in a four-hospital institution of 530 consecutive patients with adjudicated thrombotic microangiopathies during the 2009-2016 period studied STEC-unrelated infections' epidemiology and major outcomes (death, acute dialysis, and major cardiovascular events). RESULTS STEC-unrelated infection was present in 145 of 530 (27%) patients, thrombotic microangiopathies without infection were present in 350 of 530 (66%) patients, and STEC causing hemolytic and uremic syndrome was present in 35 of 530 (7%) patients. They (versus thrombotic microangiopathy without infection) were associated with age >60 years (36% versus 18%), men (53% versus 27%), altered consciousness (32% versus 11%), mean BP <65 mm Hg (21% versus 4%), lower hemoglobin and platelet count, and AKI (72% versus 49%). They were associated with more than one pathogen in 36 of 145 (25%) patients (either isolated [14%] or combined [86%] to other causes of thrombotic microangiopathy); however, no significant clinical or biologic differences were noted between the two groups. They were more frequently due to bacteria (enterobacteria [41%], Staphylococcus aureus [11%], and Streptococcus pneumonia [3%]) than viruses (Epstein-Barr [20%], cytomegalovirus [18%], influenza [3%], hepatitis C [1%], HIV [1%], and rotavirus [1%]). STEC-unrelated infections were independent risk factors for in-hospital death (odds ratio, 2.22; 95% confidence interval, 1.18 to 4.29), major cardiovascular event (odds ratio, 3.43; 95% confidence interval, 1.82 to 6.69), and acute dialysis (odds ratio, 3.48; 95% confidence interval, 1.78 to 7.03). Bacteria (versus other pathogens), and among bacteria, enterobacteria, presence of more than one bacteria, and E. coli without shigatoxin were risk factors for acute dialysis. CONCLUSIONS Infections are frequent thrombotic microangiopathy triggers or causes, and they are mostly unrelated to STEC. Infections convey a higher risk of death and major complications. The most frequent pathogens were enterobacteria, S. aureus, Epstein-Barr virus, and cytomegalovirus. PODCAST This article contains a podcast at https://www.asn-online.org/media/podcast/CJASN/2021_09_07_CJN17511120.mp3.
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Affiliation(s)
- Benjamin Thoreau
- Service de Néphrologie-Hypertension, Dialyses, Transplantation Rénale, Néphrologie Pédiatrique, Hôpital Bretonneau et Hôpital Clocheville, Centre Hospitalier Universitaire (CHU) Tours, Tours, France et French Clinical Research Network Infrastructure-Cardiovascular and Renal Clinical Trialists, Tours, France
| | - Florent von Tokarski
- Service de Néphrologie-Hypertension, Dialyses, Transplantation Rénale, Néphrologie Pédiatrique, Hôpital Bretonneau et Hôpital Clocheville, Centre Hospitalier Universitaire (CHU) Tours, Tours, France et French Clinical Research Network Infrastructure-Cardiovascular and Renal Clinical Trialists, Tours, France
| | - Adeline Bauvois
- Service de Néphrologie-Hypertension, Dialyses, Transplantation Rénale, Néphrologie Pédiatrique, Hôpital Bretonneau et Hôpital Clocheville, Centre Hospitalier Universitaire (CHU) Tours, Tours, France et French Clinical Research Network Infrastructure-Cardiovascular and Renal Clinical Trialists, Tours, France
| | - Guillaume Bayer
- Service de Néphrologie-Hypertension, Dialyses, Transplantation Rénale, Néphrologie Pédiatrique, Hôpital Bretonneau et Hôpital Clocheville, Centre Hospitalier Universitaire (CHU) Tours, Tours, France et French Clinical Research Network Infrastructure-Cardiovascular and Renal Clinical Trialists, Tours, France
| | - Christelle Barbet
- Service de Néphrologie-Hypertension, Dialyses, Transplantation Rénale, Néphrologie Pédiatrique, Hôpital Bretonneau et Hôpital Clocheville, Centre Hospitalier Universitaire (CHU) Tours, Tours, France et French Clinical Research Network Infrastructure-Cardiovascular and Renal Clinical Trialists, Tours, France
| | - Sylvie Cloarec
- Service de Néphrologie-Hypertension, Dialyses, Transplantation Rénale, Néphrologie Pédiatrique, Hôpital Bretonneau et Hôpital Clocheville, Centre Hospitalier Universitaire (CHU) Tours, Tours, France et French Clinical Research Network Infrastructure-Cardiovascular and Renal Clinical Trialists, Tours, France
| | - Elodie Mérieau
- Service de Néphrologie-Hypertension, Dialyses, Transplantation Rénale, Néphrologie Pédiatrique, Hôpital Bretonneau et Hôpital Clocheville, Centre Hospitalier Universitaire (CHU) Tours, Tours, France et French Clinical Research Network Infrastructure-Cardiovascular and Renal Clinical Trialists, Tours, France
| | - Sébastien Lachot
- Service d'Hématologie Biologique, Hôpital Bretonneau, CHU Tours, Tours, France
| | - Denis Garot
- Service de Médecine Intensive Réanimation, Hôpital Bretonneau, CHU Tours, Tours, France
| | - Louis Bernard
- Service de Maladies Infectieuses, Hôpital Bretonneau, CHU Tours, Tours, France
| | - Emmanuel Gyan
- Service d'Hématologie et Thérapie Cellulaire, Hôpital Bretonneau, CHU Tours, Equipe de recherche Labellisée, Centre National pour le Recherche Scientifique 7001, Université de Tours, Tours, France
| | - Franck Perrotin
- Service de Gynécologie Obstétrique B. Maternité Olympe de Gouges, Hôpital Bretonneau, CHU Tours, Tours, France.,Institut National de la Santé et de la Recherche Médicale U1253 Imaging and Brain (iBrain), Université de Tours, Tours, France
| | - Claire Pouplard
- Service d'Hématologie-Hémostase, Hôpital Trousseau, CHU Tours, Tours, France.,EA7501, François-Rabelais University, Tours, France
| | - François Maillot
- Service de Médecine interne, Hôpital Bretonneau, CHU Tours, Tours, France
| | - Philippe Gatault
- Service de Néphrologie-Hypertension, Dialyses, Transplantation Rénale, Néphrologie Pédiatrique, Hôpital Bretonneau et Hôpital Clocheville, Centre Hospitalier Universitaire (CHU) Tours, Tours, France et French Clinical Research Network Infrastructure-Cardiovascular and Renal Clinical Trialists, Tours, France.,EA4245, François-Rabelais University, Tours, France
| | - Bénédicte Sautenet
- Service de Néphrologie-Hypertension, Dialyses, Transplantation Rénale, Néphrologie Pédiatrique, Hôpital Bretonneau et Hôpital Clocheville, Centre Hospitalier Universitaire (CHU) Tours, Tours, France et French Clinical Research Network Infrastructure-Cardiovascular and Renal Clinical Trialists, Tours, France.,Institut National de la Santé et de la Recherche Médicale U1246 the methodS in Patient-centered outcomes and HEalth ResEarch, Université de Tours, Université de Nantes, Tours, France
| | - Emmanuel Rusch
- Laboratoire de Santé Publique, Hôpital Bretonneau, CHU Tours, Tours, France
| | | | - Cécile Vigneau
- CHU Pontchaillou, Service de Néphrologie, Rennes, France.,Université Rennes 1, Institut National de la Santé et de la Recherche Médicale Institut de Recherche en Santé, environnement et Travail, Unité Mixte de Recherche 1085, Rennes, France
| | - Fadi Fakhouri
- Service of Nephrology, Department of Medicine, Centre Hospitalier Universitaire Vaudois and Université de Lausanne, Lausanne, Switzerland
| | - Jean-Michel Halimi
- Service de Néphrologie-Hypertension, Dialyses, Transplantation Rénale, Néphrologie Pédiatrique, Hôpital Bretonneau et Hôpital Clocheville, Centre Hospitalier Universitaire (CHU) Tours, Tours, France et French Clinical Research Network Infrastructure-Cardiovascular and Renal Clinical Trialists, Tours, France .,EA4245, François-Rabelais University, Tours, France
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da Mata GF, Fernandes DE, Luciano EDP, Sales GTM, Riguetti MTP, Kirsztajn GM. Inflammation and kidney involvement in human viral diseases caused by SARS-CoV-2, HIV, HCV and HBV. J Venom Anim Toxins Incl Trop Dis 2021; 27:e20200154. [PMID: 34381495 PMCID: PMC8323457 DOI: 10.1590/1678-9199-jvatitd-2020-0154] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 03/01/2021] [Indexed: 01/08/2023] Open
Abstract
Inflammation is closely related to renal diseases. This is particularly true for renal diseases caused by infections as in viral diseases. In this review, we highlight the inflammatory mechanisms that underlie kidney dysfunction in SARS-CoV-2, human immunodeficiency (HIV), hepatitis C (HCV), and hepatitis B (HBV) infections. The pathophysiology of renal involvement in COVID-19 is complex, but kidney damage is frequent, and the prognosis is worse when it happens. Virus-like particles were demonstrated mostly in renal tubular epithelial cells and podocytes, which suggest that SARS-CoV-2 directly affects the kidneys. SARS-CoV-2 uses the angiotensin-converting enzyme 2 receptor, which is found in endothelial cells, to infect the human host cells. Critical patients with SARS-CoV-2-associated acute kidney injury (AKI) show an increase in inflammatory cytokines (IL-1β, IL-8, IFN-γ, TNF-α), known as cytokine storm that favors renal dysfunction by causing intrarenal inflammation, increased vascular permeability, volume depletion, thromboembolic events in microvasculature and persistent local inflammation. Besides AKI, SARS-CoV-2 can also cause glomerular disease, as other viral infections such as in HIV, HBV and HCV. HIV-infected patients present chronic inflammation that can lead to a number of renal diseases. Proinflammatory cytokines and TNF-induced apoptosis are some of the underlying mechanisms that may explain the virus-induced renal diseases that are here reviewed.
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Affiliation(s)
- Gustavo Ferreira da Mata
- Department of Medicine (Nephrology), Federal University of São Paulo (Unifesp), São Paulo, SP, Brazil
| | - Danilo Euclides Fernandes
- Department of Medicine (Nephrology), Federal University of São Paulo (Unifesp), São Paulo, SP, Brazil
| | - Eduardo de Paiva Luciano
- Department of Medicine (Nephrology), Federal University of São Paulo (Unifesp), São Paulo, SP, Brazil
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Kimweri D, Ategeka J, Ceasor F, Muyindike W, Nuwagira E, Muhindo R. Incidence and risk predictors of acute kidney injury among HIV-positive patients presenting with sepsis in a low resource setting. BMC Nephrol 2021; 22:238. [PMID: 34187389 PMCID: PMC8243728 DOI: 10.1186/s12882-021-02451-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Accepted: 06/15/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Acute kidney injury (AKI) is a frequently encountered clinical condition in critically ill patients and is associated with increased morbidity and mortality. In our resource-limited setting (RLS), the most common cause of AKI is sepsis and volume depletion. Sepsis alone, accounts for up to 62 % of the AKI cases in HIV-positive patients. OBJECTIVE The major goal of this study was to determine the incidence and risk predictors of AKI among HIV-infected patients admitted with sepsis at a tertiary hospital in Uganda. METHODS In a prospective cohort study, we enrolled adult patients presenting with sepsis at Mbarara Regional Referral Hospital (MRRH) in southwestern Uganda between March and July 2020. Sepsis was determined using the qSOFA criteria. Patients presenting with CKD or AKI were excluded. Sociodemographic characteristics, physical examination findings, and baseline laboratory values were recorded in a data collection tool. The serum creatinine and urea were done at admission (0-hour) and at the 48-hour mark to determine the presence of AKI. We performed crude and multivariable binomial regression to establish the factors that predicted developing AKI in the first 48 h of admission. Variables with a p < 0.01 in the adjusted analysis were considered as significant predictors of AKI. RESULTS Out of 384 patients screened, 73 (19 %) met our inclusion criteria. Their median age was 38 (IQR 29-46) years and 44 (60.3 %) were male. The median CD4 T-cell count was 67 (IQR 35-200) cells, median MUAC was 23 (IQR 21-27) cm and 54 (74.0 %) participants were on a regimen containing Tenofovir Disoproxil Fumarate (TDF). The incidence of AKI in 48 h was 19.2 % and in the adjusted analysis, thrombocytopenia (Platelet count < 150) (adjusted risk ratio 8.21: 95 % CI: 2.0-33.8, p = 0.004) was an independent predictor of AKI. CONCLUSIONS There is a high incidence of AKI among HIV-positive patients admitted with sepsis in Uganda. Thrombocytopenia at admission may be a significant risk factor for developing AKI. The association of thrombocytopenia in sepsis and AKI needs to be investigated.
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Affiliation(s)
- Davis Kimweri
- Department of Internal Medicine, Mbarara University of Science and Technology, P.O BOX 1410, Mbarara, Uganda.
| | - Julian Ategeka
- Department of Internal Medicine, Mbarara University of Science and Technology, P.O BOX 1410, Mbarara, Uganda
| | - Faustine Ceasor
- Department of Internal Medicine, Mbarara University of Science and Technology, P.O BOX 1410, Mbarara, Uganda
| | - Winnie Muyindike
- Department of Internal Medicine, Mbarara University of Science and Technology, P.O BOX 1410, Mbarara, Uganda
- Immunosuppression Clinic, Mbarara Regional Referral Hospital, Mbarara, Uganda
| | - Edwin Nuwagira
- Department of Internal Medicine, Mbarara University of Science and Technology, P.O BOX 1410, Mbarara, Uganda
| | - Rose Muhindo
- Department of Internal Medicine, Mbarara University of Science and Technology, P.O BOX 1410, Mbarara, Uganda
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Sukumar S, Lämmle B, Cataland SR. Thrombotic Thrombocytopenic Purpura: Pathophysiology, Diagnosis, and Management. J Clin Med 2021; 10:536. [PMID: 33540569 PMCID: PMC7867179 DOI: 10.3390/jcm10030536] [Citation(s) in RCA: 82] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 01/24/2021] [Accepted: 01/27/2021] [Indexed: 12/12/2022] Open
Abstract
Thrombotic thrombocytopenic purpura (TTP) is a rare thrombotic microangiopathy characterized by microangiopathic hemolytic anemia, severe thrombocytopenia, and ischemic end organ injury due to microvascular platelet-rich thrombi. TTP results from a severe deficiency of the specific von Willebrand factor (VWF)-cleaving protease, ADAMTS13 (a disintegrin and metalloprotease with thrombospondin type 1 repeats, member 13). ADAMTS13 deficiency is most commonly acquired due to anti-ADAMTS13 autoantibodies. It can also be inherited in the congenital form as a result of biallelic mutations in the ADAMTS13 gene. In adults, the condition is most often immune-mediated (iTTP) whereas congenital TTP (cTTP) is often detected in childhood or during pregnancy. iTTP occurs more often in women and is potentially lethal without prompt recognition and treatment. Front-line therapy includes daily plasma exchange with fresh frozen plasma replacement and immunosuppression with corticosteroids. Immunosuppression targeting ADAMTS13 autoantibodies with the humanized anti-CD20 monoclonal antibody rituximab is frequently added to the initial therapy. If available, anti-VWF therapy with caplacizumab is also added to the front-line setting. While it is hypothesized that refractory TTP will be less common in the era of caplacizumab, in relapsed or refractory cases cyclosporine A, N-acetylcysteine, bortezomib, cyclophosphamide, vincristine, or splenectomy can be considered. Novel agents, such as recombinant ADAMTS13, are also currently under investigation and show promise for the treatment of TTP. Long-term follow-up after the acute episode is critical to monitor for relapse and to diagnose and manage chronic sequelae of this disease.
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Affiliation(s)
- Senthil Sukumar
- Division of Hematology, Department of Medicine, The Ohio State University, Columbus, OH 43210, USA;
| | - Bernhard Lämmle
- Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, University of Bern, CH 3010 Bern, Switzerland;
- Center for Thrombosis and Hemostasis, University Medical Center, Johannes Gutenberg University, 55131 Mainz, Germany
- Haemostasis Research Unit, University College London, London WC1E 6BT, UK
| | - Spero R. Cataland
- Division of Hematology, Department of Medicine, The Ohio State University, Columbus, OH 43210, USA;
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21
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Masoet A, Bassa F, Chothia MY. HIV-associated thrombotic thrombocytopaenic purpura: A retrospective cohort study during the anti-retroviral therapy era. J Clin Apher 2019; 34:399-406. [PMID: 30758877 DOI: 10.1002/jca.21692] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 11/14/2018] [Accepted: 01/28/2019] [Indexed: 11/05/2022]
Abstract
BACKGROUND HIV-associated thrombotic thrombocytopaenic purpura (TTP) is thought to represent the majority of current TTP diagnoses in South Africa (SA). AIM The primary aim was to describe the clinical features and compare the time to remission of TTP in those patients with and without HIV. DESIGN A retrospective cohort study conducted at Tygerberg Hospital in Cape Town, SA for the period January 1, 2010 to January 31, 2015. METHODS All adult patients requiring ≥5 units of plasma products for ≥1 day during hospitalization were screened for a diagnosis of TTP. Those with a reported clinical diagnosis and/or laboratory evidence of TTP were included in the final analysis. RESULTS A total of 52 cases were identified of which 78.8% were HIV-infected. Time to remission was 10 days in the HIV group vs 19 days in the HIV negative group, P = 0.07. Most of the patients were Black females. Fever was more common in those with HIV. Neurological features were common in both groups. The majority in the HIV group was managed exclusively with plasma infusion alone (90.2% vs 45.5%, P < 0.01). There were no differences in the time to remission regardless of treatments received. Anti-retroviral therapy initiation during hospitalization was a predictor for remission. Overall mortality rate was 44.2%. CONCLUSION There was no difference in the time to remission in patients with HIV-associated TTP as compared with HIV negative TTP. The high mortality was probably the result of less intensive plasma infusion and therapeutic plasma exchange regimens.
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Affiliation(s)
- Azizah Masoet
- Division of General Medicine, Department of Medicine, Faculty of Medicine and Health Sciences, Stellenbosch University and Tygerberg Hospital, Cape Town, Western Cape, South Africa
| | - Fatima Bassa
- Division of Haematology, Department of Medicine, Faculty of Medicine and Health Sciences, Stellenbosch University and Tygerberg Hospital, Cape Town, Western Cape, South Africa
| | - Mogamat-Yazied Chothia
- Division of General Medicine, Department of Medicine, Faculty of Medicine and Health Sciences, Stellenbosch University and Tygerberg Hospital, Cape Town, Western Cape, South Africa.,Division of Nephrology, Department of Medicine, Faculty of Medicine and Health Sciences, Stellenbosch University and Tygerberg Hospital, Cape Town, Western Cape, South Africa
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22
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Comparison of ADAMTS13 and Von Willebrand factor levels and activities, and plasminogen levels, in plasma products currently available for the treatment of thrombotic thrombocytopenic purpura in South Africa. Transfus Apher Sci 2019; 58:72-78. [DOI: 10.1016/j.transci.2018.11.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 11/12/2018] [Accepted: 11/26/2018] [Indexed: 12/16/2022]
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Louw S, Gounden R, Mayne ES. Thrombotic thrombocytopenic purpura (TTP)-like syndrome in the HIV era. Thromb J 2018; 16:35. [PMID: 30559606 PMCID: PMC6291936 DOI: 10.1186/s12959-018-0189-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 12/02/2018] [Indexed: 12/17/2022] Open
Abstract
Background The thrombotic microangiopathies (TMAs) is a heterogeneous group of relatively uncommon but serious disorders presenting with thrombocytopenia and microangiopathic haemolysis. Thrombotic thrombocytopenic purpura (TTP) is one of these microangiopathic processes. HIV infection is an acquired cause of TTP but the pathogenesis is poorly understood. HIV-associated TTP was previously described to be associated with advanced immunosuppression. The incidence of HIV-related TTP was expected to decline with access to anti-retroviral therapy (ART). Methods We undertook an observational study of patients with a diagnosis of TTP admitted to our hospital (CMJAH). The patient demographics, laboratory test results and treatment outcomes were recorded. Results Twenty-one patients were admitted with a diagnosis of TTP during the study period. All patients had schistocytes and severe thrombocytopaenia. The presenting symptoms were non-specific and renal dysfunction and neurological compromise were uncommon. 77% of the patients were HIV-infected and, in 7 patients, TTP was the index presentation. The remainder of the HIV infected patients were on ART and the majority were virologically suppressed. A significant female preponderance was present. Only 4 of the 21 patients tested HIV negative with a positive Coombs test in 2. All patients in this cohort received treatment with plasma exchange therapy for a median period of 12 days with a 96.5% survival rate. Neither the baseline laboratory features nor the degree of immunosuppression was predictive of the duration of therapy needed for remission. Conclusion HIV-related TTP is still a cause of morbidity and the clinical presentation is heterogeneous which may present a diagnostic challenge in the absence of sensitive biomarkers. Early treatment with plasma exchange is effective but expensive and invasive.
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Affiliation(s)
- Susan Louw
- Department of Molecular Medicine and Haematology, Faculty of Health Sciences, University of Witwatersrand and National Health Laboratory Service, Office 3B20, 7 York Road, Parktown, Johannesburg, 2191 South Africa
| | - Reenelle Gounden
- Department of Molecular Medicine and Haematology, Faculty of Health Sciences, University of Witwatersrand and National Health Laboratory Service, Office 3B20, 7 York Road, Parktown, Johannesburg, 2191 South Africa
| | - Elizabeth Sarah Mayne
- Department of Molecular Medicine and Haematology, Faculty of Health Sciences, University of Witwatersrand and National Health Laboratory Service, Office 3B20, 7 York Road, Parktown, Johannesburg, 2191 South Africa
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24
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Swart L, Schapkaitz E, Mahlangu JN. Thrombotic thrombocytopenic purpura: A 5-year tertiary care centre experience. J Clin Apher 2018; 34:44-50. [PMID: 30536422 DOI: 10.1002/jca.21673] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 10/10/2018] [Accepted: 10/15/2018] [Indexed: 12/28/2022]
Abstract
INTRODUCTION Thrombotic thrombocytopenic purpura (TTP) is associated with high mortality if not managed timeously with therapeutic plasma exchange (TPE). TTP secondary to human immunodeficiency virus (HIV) infection is unique to sub-Saharan Africa. The management and outcome of TTP in the era of improved access to therapy has not been described. METHODS The present study describes the clinical presentation, treatment, therapeutic endpoints, and outcome of TTP patients at the Charlotte Maxeke Johannesburg Academic Hospital, South Africa. The inpatient and outpatient records of 41 consecutive adults with TTP were reviewed between 2012 and 2016. Patients were classified according to aetiology and treatment response. RESULTS TTP was the initial presenting feature of HIV infection in 78.0%, and 12.5% were noncompliant with antiretroviral therapy (ART). Most study patients were of black ethnicity (95%) and female gender (78.1%). Treatment included initial TPE (87.8%), plasma infusion (78.1%), antiretroviral therapy (78.3%), corticosteroids (61.0%) intensive care admission (41.5%), renal dialysis (12.2%), and other immunosuppressive agents (4.9%). The median (range) number of TPEs was 10.0 (7.0-15.0). A high rate of refractory disease (63.4%) was reported. Haemoglobin, platelet count, lactate dehydrogenase, red cell distribution width, and creatinine were reliable therapeutic end-points (P < .05). The relapse rate was 9.8% and the mortality rate was 29.3%. CONCLUSION The high mortality rate emphasises the importance of early diagnosis, referral, and appropriate management of TTP. Anti-retroviral therapy and adherence monitoring are essential to TTP management associated with HIV. Future studies to identify patients at risk for refractory disease are indicated.
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Affiliation(s)
- Léanne Swart
- Department of Molecular Medicine and Haematology, Faculty of Health Sciences, National Health Laboratory Service, University of the Witwatersrand, Johannesburg, South Africa
| | - Elise Schapkaitz
- Department of Molecular Medicine and Haematology, Faculty of Health Sciences, National Health Laboratory Service, University of the Witwatersrand, Johannesburg, South Africa
| | - Johnny N Mahlangu
- Department of Molecular Medicine and Haematology, Faculty of Health Sciences, National Health Laboratory Service, University of the Witwatersrand, Johannesburg, South Africa
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25
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Schapkaitz E, Schickerling TM. The Diagnostic Challenge of Acquired Thrombotic Thrombocytopenic Purpura in Children: Case Report and Review of the Literature. Lab Med 2018; 49:268-271. [PMID: 29659973 DOI: 10.1093/labmed/lmy015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Acquired thrombotic thrombocytopenic purpura (TTP) is a rare disease in children. Despite advances in diagnosis and treatment, acquired TTP remains a challenging disease due to the lack of a simple diagnostic test and the variable response to plasma exchange. Herein, we describe a case of a 5-year-old of black ethnicity boy who presented with a sudden onset of fatigue and body aches. Laboratory investigations revealed a thrombotic microangiopathic manifestation. TTP was diagnosed, and plasma exchange and corticosteroids were initiated, with an excellent response. Subsequently, reduced disintegrin and metalloprotease with thrombospodin-2-like repeats (ADAMTS-13) activity and human immunodeficiency virus (HIV) were confirmed. Antiretroviral treatment was started as long-term management. At last follow-up, he continues in stable remission.
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Affiliation(s)
- Elise Schapkaitz
- Department of Hematology and Molecular Medicine, Charlotte Maxeke Johannesburg Academic Hospital, Johannesburg, South Africa
- Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Tanya Marié Schickerling
- Division of Pediatric Hematology and Oncology, Department of Pediatrics and Child Health, Charlotte Maxeke Johannesburg Academic Hospital, Johannesburg, South Africa
- Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
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26
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Bade NA, Giffi VS, Baer MR, Zimrin AB, Law JY. Thrombotic microangiopathy in the setting of human immunodeficiency virus infection: High incidence of severe thrombocytopenia. J Clin Apher 2018; 33:342-348. [PMID: 29377224 DOI: 10.1002/jca.21615] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 01/11/2018] [Accepted: 01/12/2018] [Indexed: 11/06/2022]
Abstract
BACKGROUND Human immunodeficiency virus (HIV) infection increases the risk of thrombotic microangiopathy (TMA), but TMA in the setting of HIV infection is not well characterized. The experience with TMA in the setting of HIV infection at the University of Maryland Medical Center was reviewed. STUDY DESIGN AND METHODS Patients undergoing therapeutic plasma exchange (TPE) for TMA from January 1, 2000 through December 31, 2012 were reviewed. Those with known HIV-positive and -negative status were compared. RESULTS Among 102 patients with known HIV status, 28 (27%) were HIV-positive, including 3 with previously undiagnosed HIV. HIV-positive patients had a median viral load of 89 500 copies/mL (range, 0->750 000 copies/mL) and a median CD4 count of 58 cells/µL (range, 2-410 cells/µL). Compared to HIV-negative patients, HIV-positive patients more frequently presented with concurrent infections (60.7% vs. 23.7%; P = .0007), had a trend toward lower median platelet counts (3000/µL vs. 15 000/µL; P = .07) and more frequently had platelet counts less than 10 000/mcL (P = .02). Nevertheless, number of TPE procedures required for remission, remission rate, mortality, and relapse incidence were similar in HIV-positive and HIV-negative patients. CONCLUSIONS The incidence described herein of HIV infection among TMA patients is the highest reported outside of South Africa. More severe thrombocytopenia in HIV-positive patients may reflect TMA in the setting of preexisting HIV-associated thrombocytopenia. HIV should be considered in patients with TMA, and TMA should be considered in HIV-positive patients with severe thrombocytopenia.
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Affiliation(s)
- Najeebah A Bade
- Division of Hematology/Oncology, Department of Medicine, University of Maryland, School of Medicine, 22 South Greene Street, Baltimore, Maryland, 21201.,Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland, School of Medicine, 22 South Greene Street, Baltimore, Maryland, 21201
| | - Victoria S Giffi
- Division of Hematology/Oncology, Department of Medicine, University of Maryland, School of Medicine, 22 South Greene Street, Baltimore, Maryland, 21201.,Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland, School of Medicine, 22 South Greene Street, Baltimore, Maryland, 21201
| | - Maria R Baer
- Division of Hematology/Oncology, Department of Medicine, University of Maryland, School of Medicine, 22 South Greene Street, Baltimore, Maryland, 21201.,Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland, School of Medicine, 22 South Greene Street, Baltimore, Maryland, 21201
| | - Ann B Zimrin
- Division of Hematology/Oncology, Department of Medicine, University of Maryland, School of Medicine, 22 South Greene Street, Baltimore, Maryland, 21201.,Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland, School of Medicine, 22 South Greene Street, Baltimore, Maryland, 21201
| | - Jennie Y Law
- Division of Hematology/Oncology, Department of Medicine, University of Maryland, School of Medicine, 22 South Greene Street, Baltimore, Maryland, 21201.,Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland, School of Medicine, 22 South Greene Street, Baltimore, Maryland, 21201
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27
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Gunda DW, Godfrey KG, Kilonzo SB, Mpondo BC. Cytopenias among ART-naive patients with advanced HIV disease on enrolment to care and treatment services at a tertiary hospital in Tanzania: A cross-sectional study. Malawi Med J 2017; 29:43-52. [PMID: 28567196 DOI: 10.4314/mmj.v29i1.9] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND HIV/AIDS causes high morbidity and mortality through both immunosuppression and complications not directly related to immunosuppression. Haematological abnormalities, including various cytopenias, occur commonly in HIV through immune and non-immune pathways. Though these complications could potentially cause serious clinical implications, published literature on the magnitude of this problem and its associated factors in Tanzania is scarce. This study aimed at determining the prevalence and risk factors of HIV-associated cytopenias among ART-naive patients enrolling for care and treatment services at Bugando Care and Treatment Centre (CTC) in Mwanza, Tanzania. METHODS This was a cross-sectional clinic-based study done between March 2015 and February 2016, involving all antiretroviral therapy (ART)-naive adult HIV-positive patients enrolling for care and treatment services at Bugando CTC. Patients younger than 18 years and those with missing data were excluded. Data were analysed using Stata version 11 to determine the prevalence and risk factors of cytopenias. RESULTS A total of 1205 ART-naive patients were included. Median age was 41 years (interquartile range [IQR] 32 to 48). Most participants were female (n = 789; 65.6%), with a female-to-male ratio of 2:1. The median baseline CD4 count was 200 cells/µL (IQR 113 to 439). About half (49%) of the study participants had baseline CD4 counts less than 200 cells/µL. Anaemia, leucopenia, and thrombocytopenia were found in 704 (58.4%), 285 (23.6%), and 174 (14.4%) participants, respectively, and these were strongly associated with advanced HIV infection. CONCLUSIONS The magnitude of cytopenias is high among ART-naive HIV-positive adults, and cytopenias are more marked with advanced HIV infection. Early diagnosis of HIV and timely initiation of ART could potentially reduce the number of people living with advanced HIV disease and its associated complications, including the cytopenias investigated in this study. Patients with cytopenias should undergo thorough screening for tuberculosis, which is an important and treatable correlate of cytopenia, in addition to close follow-up for any potential negative outcomes.
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Affiliation(s)
- Daniel W Gunda
- Department of Internal Medicine, Weill Bugando School of Medicine, Mwanza, Tanzania
| | - Kahamba G Godfrey
- Department of Internal Medicine, Weill Bugando School of Medicine, Mwanza, Tanzania
| | - Semvua B Kilonzo
- Department of Internal Medicine, Weill Bugando School of Medicine, Mwanza, Tanzania
| | - Bonaventura C Mpondo
- Department of Internal Medicine, School of Health Sciences, University of Dodoma, Dodoma, Tanzania
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Abstract
Thrombotic thrombocytopenic purpura (TTP; also known as Moschcowitz disease) is characterized by the concomitant occurrence of often severe thrombocytopenia, microangiopathic haemolytic anaemia and a variable degree of ischaemic organ damage, particularly affecting the brain, heart and kidneys. Acute TTP was almost universally fatal until the introduction of plasma therapy, which improved survival from <10% to 80-90%. However, patients who survive an acute episode are at high risk of relapse and of long-term morbidity. A timely diagnosis is vital but challenging, as TTP shares symptoms and clinical presentation with numerous conditions, including, for example, haemolytic uraemic syndrome and other thrombotic microangiopathies. The underlying pathophysiology is a severe deficiency of the activity of a disintegrin and metalloproteinase with thrombospondin motifs 13 (ADAMTS13), the protease that cleaves von Willebrand factor (vWF) multimeric strings. Ultra-large vWF strings remain uncleaved after endothelial cell secretion and anchorage, bind to platelets and form microthrombi, leading to the clinical manifestations of TTP. Congenital TTP (Upshaw-Schulman syndrome) is the result of homozygous or compound heterozygous mutations in ADAMTS13, whereas acquired TTP is an autoimmune disorder caused by circulating anti-ADAMTS13 autoantibodies, which inhibit the enzyme or increase its clearance. Consequently, immunosuppressive drugs, such as corticosteroids and often rituximab, supplement plasma exchange therapy in patients with acquired TTP.
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Gavali AS, Shelgaonkar J, Bartakke S. Thrombotic Thrombocytopenic Purpura in a Case of Dengue Fever: A Rare Presentation. Indian J Crit Care Med 2017; 21:226-228. [PMID: 28515608 PMCID: PMC5416791 DOI: 10.4103/ijccm.ijccm_27_16] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Here, we present an unusual occurrence of thrombotic thrombocytopenic purpura (TTP) in a case of dengue fever. Both the conditions are fatal and can result in significant mortality and morbidity if left untreated. In this case, as soon as, we diagnosed the patient as having TTP, we treated her with plasma exchange therapy, steroids, and monoclonal antibodies such as rituximab. The patient responded very well to the treatment and completely recovered from neurological symptoms and laboratory parameters also normalized. Hence, timely diagnosis and starting appropriate treatment immediately are key factors for successful outcome.
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Affiliation(s)
- Abhijit S Gavali
- Department of Critical Care Medicine, Aditya Birla Memorial Hospital, Pune, Maharashtra, India
| | - Jayant Shelgaonkar
- Department of Critical Care Medicine, Aditya Birla Memorial Hospital, Pune, Maharashtra, India
| | - Sandip Bartakke
- Department of Hematology, Aditya Birla Memorial Hospital, Pune, Maharashtra, India
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30
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Warner NC, Vaughan LB, Wenzel RP. Human immunodeficiency virus associated thrombotic thrombocytopenic purpura, a clinical conundrum. J Clin Apher 2016; 32:567-570. [DOI: 10.1002/jca.21514] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Revised: 09/02/2016] [Accepted: 09/19/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Nathaniel C. Warner
- Department of Internal Medicine; Virginia Commonwealth University; 5017 Caledonia Rd, Richmond Virginia 23225
| | - Leroy B. Vaughan
- Division of Infectious Diseases; Virginia Commonwealth University; Richmond Virginia
| | - Richard P. Wenzel
- Division of Infectious Diseases; Virginia Commonwealth University; Richmond Virginia
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31
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Williams LA, Drwiega JC, Cao W, Pham HP, Bertoli LF, Zheng XL. Acquired autoimmune thrombotic thrombocytopenic purpura in a case of severe haemophilia A. Haemophilia 2016; 22:e565-e567. [DOI: 10.1111/hae.13091] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/10/2016] [Indexed: 11/24/2022]
Affiliation(s)
- L. A. Williams
- Division of Laboratory Medicine; Department of Pathology; University of Alabama at Birmingham; Birmingham AL USA
| | - J. C. Drwiega
- Division of Laboratory Medicine; Department of Pathology; University of Alabama at Birmingham; Birmingham AL USA
| | - W. Cao
- Division of Laboratory Medicine; Department of Pathology; University of Alabama at Birmingham; Birmingham AL USA
| | - H. P. Pham
- Division of Laboratory Medicine; Department of Pathology; University of Alabama at Birmingham; Birmingham AL USA
| | - L. F. Bertoli
- Department of Hematology and Oncology; Brookwood Medical Center; Birmingham AL USA
| | - X. L. Zheng
- Division of Laboratory Medicine; Department of Pathology; University of Alabama at Birmingham; Birmingham AL USA
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32
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Abstract
Post-infectious hemolytic uremic syndrome (HUS) is caused by specific pathogens in patients with no identifiable HUS-associated genetic mutation or autoantibody. The majority of episodes is due to infections by Shiga toxin (Stx) producing Escherichia coli (STEC). This chapter reviews the epidemiology and pathogenesis of STEC-HUS, including bacterial-derived factors and host responses. STEC disease is characterized by hematological (microangiopathic hemolytic anemia), renal (acute kidney injury) and extrarenal organ involvement. Clinicians should always strive for an etiological diagnosis through the microbiological or molecular identification of Stx-producing bacteria and Stx or, if negative, serological assays. Treatment of STEC-HUS is supportive; more investigations are needed to evaluate the efficacy of putative preventive and therapeutic measures, such as non-phage-inducing antibiotics, volume expansion and anti-complement agents. The outcome of STEC-HUS is generally favorable, but chronic kidney disease, permanent extrarenal, mainly cerebral complication and death (in less than 5 %) occur and long-term follow-up is recommended. The remainder of this chapter highlights rarer forms of (post-infectious) HUS due to S. dysenteriae, S. pneumoniae, influenza A and HIV and discusses potential interactions between these pathogens and the complement system.
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Affiliation(s)
- Denis F. Geary
- Division of Nephrology, The Hospital for Sick Children, Toronto, Ontario Canada
| | - Franz Schaefer
- Division of Pediatric Nephrology, University of Heidelberg, Heidelberg, Germany
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Jin A, Boroujerdi-Rad L, Shah G, Chen JLT. Thrombotic microangiopathy and human immunodeficiency virus in the era of eculizumab. Clin Kidney J 2016; 9:576-9. [PMID: 27478600 PMCID: PMC4957717 DOI: 10.1093/ckj/sfw035] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Accepted: 03/31/2016] [Indexed: 01/16/2023] Open
Abstract
Thrombotic microangiopathies (TMAs) include thrombotic thromobocytopenic purpura and hemolytic uremic syndrome (HUS). Among these conditions, atypical HUS is now recognized to be a disease of alternative complement pathway dysregulation. Eculizumab is a recombinant humanized monoclonal antibody that binds to the complement protein C5 and prevents the cleavage of C5 to C5a and C5b. Eculizumab has been used as a novel treatment for complement-mediated TMA. We present a case of a patient with human immunodeficiency virus infection who developed TMA and was successfully treated with eculizumab. The effect of long-term treatment with this new medication is unknown, and further studies are needed to establish guidelines in the management of this condition.
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Affiliation(s)
- Anna Jin
- Division of Nephrology and Hypertension, Department of Medicine, University of California Irvine, Orange, CA, USA; Nephrology Section, Department of Medicine, Long Beach Veteran Affairs Health System, Long Beach, CA, USA
| | - Laleh Boroujerdi-Rad
- Division of Nephrology and Hypertension, Department of Medicine, University of California Irvine, Orange, CA, USA; Nephrology Section, Department of Medicine, Long Beach Veteran Affairs Health System, Long Beach, CA, USA
| | - Gaurang Shah
- Division of Nephrology and Hypertension, Department of Medicine, University of California Irvine, Orange, CA, USA; Nephrology Section, Department of Medicine, Long Beach Veteran Affairs Health System, Long Beach, CA, USA
| | - Joline L T Chen
- Division of Nephrology and Hypertension, Department of Medicine, University of California Irvine, Orange, CA, USA; Nephrology Section, Department of Medicine, Long Beach Veteran Affairs Health System, Long Beach, CA, USA
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Deepanjali S, Naik RR, Mailankody S, Kalaimani S, Kadhiravan T. Dengue Virus Infection Triggering Thrombotic Thrombocytopenic Purpura in Pregnancy. Am J Trop Med Hyg 2015; 93:1028-30. [PMID: 26283741 DOI: 10.4269/ajtmh.15-0326] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Accepted: 07/06/2015] [Indexed: 12/25/2022] Open
Abstract
We report a case of thrombotic thrombocytopenic purpura (TTP) that immediately followed symptomatic dengue virus infection in a pregnant lady. The patient developed dengue fever at 16 weeks of gestation, resulting in spontaneous abortion. Subsequently, fever reappeared with persistent thrombocytopenia and jaundice. Investigations revealed microangiopathic hemolysis; there was no evidence of disseminated intravascular coagulation. The TTP episode resolved after six cycles of therapeutic plasma exchange with fresh-frozen plasma. An ADAMTS13 (a disintegrin and metalloprotease with thrombospondin type 1 motif 13 repeats) activity assay, done during convalescence, showed normal activity. The patient had an uneventful second pregnancy and has remained free of TTP recurrence for more than 2 years now. We review the pathophysiological basis of TTP in dengue infection, and suggest that jaundice with disproportionate elevation of serum aspartate aminotransferase level in a patient with dengue should arouse the suspicion of TTP.
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Affiliation(s)
- Surendran Deepanjali
- Department of Medicine, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India
| | - Raghuramulu R Naik
- Department of Medicine, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India
| | - Sharada Mailankody
- Department of Medicine, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India
| | - Sivamani Kalaimani
- Department of Medicine, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India
| | - Tamilarasu Kadhiravan
- Department of Medicine, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India
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35
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van den Dries LWJ, Gruters RA, Hövels-van der Borden SBC, Kruip MJHA, de Maat MPM, van Gorp ECM, van der Ende ME. von Willebrand Factor is elevated in HIV patients with a history of thrombosis. Front Microbiol 2015; 6:180. [PMID: 25814984 PMCID: PMC4356086 DOI: 10.3389/fmicb.2015.00180] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Accepted: 02/19/2015] [Indexed: 11/21/2022] Open
Abstract
Background: Arterial and venous thrombotic events are more prevalent in HIV infected individuals compared to the general population, even in the era of combination antiretroviral therapy. Although the mechanism is not fully understood, recent evidence suggests a role for chronic immune activation. Methods: We reviewed the Dutch National HIV registry database for HIV infected patients in Rotterdam with a history of arterial or venous thrombosis and calculated the incidence. We collected samples from patients with and without thrombosis and compared plasma levels of lipopolysaccharide (LPS), LPS binding protein (LBP), soluble CD14 (sCD14), and von Willebrand Factor antigen level (vWF). Results: During a 10-year period, a total of 60 documented events in 14,026 person years of observation (PYO) occurred, resulting in an incidence rate of 2.50, 2.21, and 4.28 for arterial, venous and combined thrombotic events per 1000 PYO, respectively. The vWF was elevated in the majority of study subjects (mean 2.36 SD ± 0.88 IU/ml); we found a significant difference when comparing venous cases to controls (mean 2.68 SD ± 0.82 IU/ml vs. 2.20 SD ± 0.77 IU/ml; p = 0.024). This difference remained significant for recurrent events (mean 2.78 SD ± 0.75; p = 0.043). sCD14 was positively correlated with LPS (r = 0.255; p = 0.003). Conclusion: The incidence of venous thrombosis was two-fold higher in HIV infected patients compared to age-adjusted data from general population cohort studies. We couldn't find a clear association between immune activation markers to either arterial or venous thrombotic events. We observed a marked increase in vWF levels as well as a correlation of vWF to first and recurrent venous thrombo-embolic events. These findings suggest that HIV infection is an independent risk factor for coagulation abnormalities and could contribute to the observed high incidence in venous thrombosis. This could be a reason to prolong anti-thrombotic treatment in HIV patients with a history of thrombosis.
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Affiliation(s)
| | - Rob A Gruters
- Department of Viroscience, Erasmus MC, University Medical Center Rotterdam, Netherlands
| | | | - Marieke J H A Kruip
- Division of Hematology, Department of Internal Medicine, Erasmus MC, University Medical Center Rotterdam, Netherlands
| | - Moniek P M de Maat
- Division of Hematology, Department of Internal Medicine, Erasmus MC, University Medical Center Rotterdam, Netherlands
| | - Eric C M van Gorp
- Department of Viroscience, Erasmus MC, University Medical Center Rotterdam, Netherlands ; Division of Infectious Diseases, Department of Internal Medicine, Erasmus MC, University Medical Center Rotterdam, Netherlands
| | - Marchina E van der Ende
- Division of Infectious Diseases, Department of Internal Medicine, Erasmus MC, University Medical Center Rotterdam, Netherlands
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Clinical utility of ADAMTS-13 testing in suspected thrombotic microangiopathy: an audit of ADAMTS-13 activity assay requests in routine practice from a tertiary hospital. Pathology 2014; 44:638-41. [PMID: 23089737 DOI: 10.1097/pat.0b013e328359d505] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
AIMS Differentiation between thrombotic thrombocytopenic purpura (TTP) and other microangiopathic haemolytic anaemia (MAHA) processes can be difficult. Since the documentation of ADAMTS-13 deficiency in TTP, several ADAMTS-13 activity assays have been developed for use in the diagnosis of TTP and/or other microangiopathic disorders. We reviewed the clinical utility of ADAMTS-13 activity testing in suspected TTP, as used in routine clinical practice in a tertiary referral hospital. METHODS All requests for ADAMTS-13 activity levels performed at our institution after introduction of the assay were retrospectively audited with respect to clinical diagnosis and results. RESULTS In total 57 individual patients were tested, of whom only 46% had a MAHA process. Severe ADAMTS-13 deficiency was present in five TTP patients and in one patient with fulminant hepatic failure. CONCLUSIONS Our experience suggests that severely reduced levels are relatively specific for TTP, but may also occur in fulminant hepatic failure. Patients without MAHA may have reduced ADAMTS-13 activity and there is significant overlap in the range of ADAMTS-13 activity seen in non-TTP MAHA diagnoses. This supports the observation that outside the diagnosis and (possible) follow-up of suspected idiopathic TTP, the ADAMTS-13 activity assay has limited clinical utility. Further education about the role of ADAMTS-13 activity testing is needed.
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Acquired TTP: ADAMTS13 meets the immune system. Blood Rev 2014; 28:227-34. [DOI: 10.1016/j.blre.2014.07.004] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Accepted: 07/14/2014] [Indexed: 02/06/2023]
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van den Berg K, Murphy EL, Pretorius L, Louw VJ. The impact of HIV-associated anaemia on the incidence of red blood cell transfusion: implications for blood services in HIV-endemic countries. Transfus Apher Sci 2014; 51:10-8. [PMID: 25457008 DOI: 10.1016/j.transci.2014.10.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Cytopaenias, especially anaemia, are common in the HIV-infected population. The causes of HIV related cytopaenias are multi-factorial and often overlapping. In addition, many of the drugs used in the management of HIV-positive individuals are myelosuppresive and can both cause and exacerbate anaemia. Even though blood and blood products are still the cornerstone in the management of severe cytopaenias, how HIV may affect blood utilisation is not well understood. The impact of HIV/AIDS on blood collections has been well documented. As the threat posed by HIV on the safety of the blood supply became clearer, South Africa introduced progressively more stringent donor selection criteria, based on the HIV risk profile of the donor cohort from which the blood collected. The implementation of new testing technology in 2008 which significantly improved the safety of the blood supply enabled the removal of what was perceived by many as a racially based donor risk model. However, this new technology had a significant and sustained impact on the cost of blood and blood products in South Africa. In contrast, it would appear little is known of how HIV influences the utilisation of blood and blood products. Considering the high prevalence of HIV among hospitalised patients and the significant risk for anaemia among this group, there would be an expectation that the transfusion requirements of an HIV-infected patient would be higher than that of an HIV-negative patient. However, very little published data is available on this topic which emphasises the need for further large-scale studies to evaluate the impact of HIV/AIDS on the utilisation of blood and blood products and how the large-scale roll-out of ARV programs may in future play a role in determining the country's blood needs.
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Affiliation(s)
- Karin van den Berg
- South African National Blood Service, Port Elizabeth, South Africa; Division Clinical Haematology, Department of Internal Medicine, University of the Free State, Bloemfontein, South Africa.
| | - Edward L Murphy
- University of California, San Francisco, United States; Blood Systems Research Institute, San Francisco, United States
| | - Lelanie Pretorius
- Division Clinical Haematology, Department of Internal Medicine, University of the Free State, Bloemfontein, South Africa; Ampath Laboratories, Bloemfontein, South Africa
| | - Vernon J Louw
- Division Clinical Haematology, Department of Internal Medicine, University of the Free State, Bloemfontein, South Africa
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Thachil J, Owusu-Ofori S, Bates I. Haematological Diseases in the Tropics. MANSON'S TROPICAL INFECTIOUS DISEASES 2014. [PMCID: PMC7167525 DOI: 10.1016/b978-0-7020-5101-2.00066-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Rakhmanina N, Wong EC, Davis JC, Ray PE. Hemorrhagic Stroke in an Adolescent Female with HIV-Associated Thrombotic Thrombocytopenic Purpura. ACTA ACUST UNITED AC 2014; 5. [PMID: 25429351 PMCID: PMC4241775 DOI: 10.4172/2155-6113.1000311] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
HIV-1 infection can trigger acute episodes of Idiopathic Thrombocytoponic Purpura (ITP), and Thrombotic Thrombocytopenic Purpura (TTP), particularly in populations with advanced disease and poor adherence to antiretroviral therapy (ART). These diseases should be distinguished because they respond to different treatments. Previous studies done in adults with HIV-TTP have recommended the prompt initiation or re-initiation of ART in parallel with plasma exchange therapy to improve the clinical outcome of these patients. Here, we describe a case of HIV-TTP resulting in an acute hemorrhagic stroke in a 16 year old female with perinatally acquired HIV infection and non-adherence to ART, who presented with severe thrombocytopenia, microangiopathic hemolytic anemia, and a past medical history of HIV-ITP. Both differential diagnosis and treatments for HIV-ITP and HIV-TTP were considered simultaneously. A decrease in plasma ADAMTS13 activity (<5%) without detectable inhibitory antibodies confirmed the diagnosis of HIV-TTP. Re-initiation of ART and plasma exchange resulted in a marked decrease in the HIV-RNA viral load, recovery of the platelet count, and complete recovery was achieved with sustained virologic suppression.
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Affiliation(s)
- Natella Rakhmanina
- Divisions of Infectious Disease, The George Washington University, School of Medicine and Health Sciences, Washington, DC, USA ; Department of Pediatrics, The George Washington University, School of Medicine and Health Sciences, Washington, DC, USA
| | - Edward Cc Wong
- Laboratory Medicine, The George Washington University, School of Medicine and Health Sciences, Washington, DC, USA ; Department of Pediatrics, The George Washington University, School of Medicine and Health Sciences, Washington, DC, USA ; The George Washington University, School of Medicine and Health Sciences, Washington, DC, USA
| | - Jeremiah C Davis
- Department of Pediatrics, University of Washington and Seattle Children's Hospital, Seattle WA, USA
| | - Patricio E Ray
- Children's National Medical Center, The George Washington University, School of Medicine and Health Sciences, Washington, DC, USA ; Department of Pediatrics, The George Washington University, School of Medicine and Health Sciences, Washington, DC, USA
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41
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Humane-Immundefizienz-Virus-assoziierte thrombotisch-thrombozytopenische Purpura. Rechtsmedizin (Berl) 2013. [DOI: 10.1007/s00194-013-0917-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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42
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Purpura thrombotique thrombocytopénique et autres syndromes de microangiopathie thrombotique au cours de l’infection par le virus de l’immunodéficience humaine. Rev Med Interne 2012; 33:259-64. [DOI: 10.1016/j.revmed.2011.11.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2011] [Revised: 11/04/2011] [Accepted: 11/22/2011] [Indexed: 11/23/2022]
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George JN, Terrell DR, Vesely SK, Kremer Hovinga JA, Lämmle B. Thrombotic microangiopathic syndromes associated with drugs, HIV infection, hematopoietic stem cell transplantation and cancer. Presse Med 2012; 41:e177-88. [DOI: 10.1016/j.lpm.2011.10.026] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2011] [Accepted: 10/20/2011] [Indexed: 10/14/2022] Open
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44
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Current management and therapeutical perspectives in thrombotic thrombocytopenic purpura. Presse Med 2012; 41:e163-76. [DOI: 10.1016/j.lpm.2011.10.024] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2011] [Revised: 10/26/2011] [Accepted: 10/28/2011] [Indexed: 12/26/2022] Open
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Abstract
Thrombotic microangiopathies encompass a group of disorders characterized by microangiopathic hemolytic anemia, thrombocytopenia associated with hyaline thrombi (comprised primarily of platelet aggregates in the microcirculation), and varying degrees of end-organ failure. Many primary (genetic) and secondary etiological predisposing factors have been described-namely pregnancy, autoimmune disorders, cancer, drugs and antineoplastic therapy, bone marrow transplantation/solid organ transplantation, and infections. In the setting of infectious diseases, the association with Shiga or Shiga-like exotoxin of Escherichia coli 0157:h7 or Shigella dysenteriae type 1-induced typical hemolytic uremic syndrome is well known. Recently however, an increasing body of evidence suggests that viruses may also play an important role as trigger factors in the pathogenesis of thrombotic microangiopathies. This is a comprehensive review focusing on the current understanding of viral associated/induced endothelial stimulation and damage that ultimately leads to the development of this life-threatening multisystemic disorder.
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Affiliation(s)
- Rodrigo Lopes da Silva
- Hospital Santo António dos Capuchos, Centro Hospitalar Lisboa Center, Alameda Capuchos, Lisboa, Portugal.
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46
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Pos W, Luken BM, Sorvillo N, Kremer Hovinga JA, Voorberg J. Humoral immune response to ADAMTS13 in acquired thrombotic thrombocytopenic purpura. J Thromb Haemost 2011; 9:1285-91. [PMID: 21535387 DOI: 10.1111/j.1538-7836.2011.04307.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The apparently spontaneous development of autoantibodies to ADAMTS13 in previously healthy individuals is a major cause of thrombotic thrombocytopenic purpura (TTP). Epitope mapping studies have shown that in most patients antibodies directed towards the spacer domain of ADAMTS13 are present. A single antigenic surface comprising Arg(660) , Tyr(661) and Tyr(665) that contributes to the productive binding of ADAMTS13 to unfolded von Willebrand factor is targeted by anti-spacer domain antibodies. Antibodies directed to the carboxyl-terminal CUB1-2 and TSP2-8 domains have also been observed in the plasma of patients with acquired TTP. As yet it has not been established whether this class of antibodies modulates ADAMTS13 activity. Inspection of the primary sequence of human monoclonal anti-ADAMTS13 antibodies suggests that the variable heavy chain germline gene segment VH1-69 is frequently incorporated. We suggest a model in which 'shape complementarity' between the spacer domain and residues encoded by the VH1-69 gene segment explain the preferential use of this variable heavy chain gene segment. Finally, a model is presented for the development of anti-ADAMTS13 antibodies in previously healthy individuals that incorporates the recent identification of HLA DRB1*11 as a risk factor for acquired TTP.
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Affiliation(s)
- W Pos
- Department of Plasma Proteins, Sanquin-AMC Landsteiner Laboratory, Amsterdam, the Netherlands
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Visagie GJ, Louw VJ. Myocardial injury in HIV-associated thrombotic thrombocytopenic purpura (TTP). Transfus Med 2010; 20:258-64. [PMID: 20409074 DOI: 10.1111/j.1365-3148.2010.01006.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Thrombotic thrombocytopenic purpura (TTP) has been associated with human immunodeficiency virus (HIV) infection. With the high prevalence of HIV in sub-Saharan Africa, HIV-associated TTP is the most common form of this disease seen in the South African population. Several case reports describe myocardial infarction in HIV-negative TTP patients. The case of the first HIV-positive patient who presented with clinical signs and symptoms of TTP and myocardial injury is reported in this study. A patient with fragmentation haemolysis and thrombocytopenia presented with angina. Risk factors for ischaemic heart disease were absent. An electrocardiogram (EKG) revealed ST-segment elevation and a significantly raised Troponin T level. The patient's HIV test was positive and a diagnosis of myocardial injury with HIV-associated TTP was made. The patient was treated with plasma infusion and steroid therapy. Due to poor response, the therapy was changed to plasma exchange. The patient recovered fully and subsequent coronary angiography revealed normal coronary vessels. Treatment of myocardial infarction in TTP is controversial, but the treatment cornerstone should remain plasma infusion or plasma exchange. As patients are often young and do not have the classical risk factors of ischaemic heart disease, a high level of suspicion and routine exclusion of myocardial ischaemia in these patients are advised.
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Affiliation(s)
- G J Visagie
- Department of Internal Medicine, Faculty of Health Sciences, University of the Free State, Bloemfontein 9300, South Africa.
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Komplexe Gerinnungsstörungen. Hamostaseologie 2010. [PMCID: PMC7123555 DOI: 10.1007/978-3-642-01544-1_35] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
Die thrombotisch-thrombozytopenische Purpura (TTP) und das hämolytischurämische Syndrom (HUS) sind thrombotische Mikroangiopathien, gekennzeichnet durch eine Endothelzellschädigung mit nachfolgender Bildung von Thromben in der Mikrozirkulation mit intravasaler Hämolyse und Thrombozytopenie. Ischämische Organdysfunktionen im Gehirn, den Nieren und anderen Organen Prägen das klinische Bild. Während bei Erwachsenen das Auftreten einer neurologischen Symptomatik zur Diagnose TTP führt, wird bei Kindern mit dem Leitsymptom Nierenversagen die Diagnose HUS gestellt.
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Rossi FC, Angerami RN, de Paula EV, Orsi FL, Shang D, del Guercio VM, Resende MR, Annichino-Bizzacchi JM, da Silva LJ, Zheng XL, Castro V. A novel association of acquired ADAMTS13 inhibitor and acute dengue virus infection. Transfusion 2009; 50:208-12. [PMID: 19788513 DOI: 10.1111/j.1537-2995.2009.02391.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Dengue is a mosquito-borne viral disease with an increasing incidence worldwide. Thrombocytopenia is a common finding in dengue virus (DV) infection; however, the underlying mechanisms remain unknown. CASE REPORT Here we provide the first evidence of a case of antibody formation against ADAMTS13 (ADAMTS13 inhibitor) in the course of a severe acute DV infection resulting in thrombotic microangiopathy (TMA). The patient presented with classical dengue symptoms (positive epidemiology, high fever, myalgia, predominantly in the lower limbs and lumbar region for 1 week) and, after 11 days of initial symptoms, developed TMA. Clinical and laboratorial investigation of dengue and TMA was performed. RESULTS The patient presented with ADAMTS13 inhibitor (IgG) during the acute phase of the disease, without anti-platelet antibodies detectable. Dengue infection had laboratorial confirmation. There were excellent clinical and laboratory responses to 11 serial plasma exchanges. Anti-ADAMTS13 inhibitor disappeared after remission of TMA and dengue resolution. No recurrence of TMA symptoms was observed after 2-year follow-up. CONCLUSIONS Although the real incidence of dengue-related TMA is unknown, this case provides the basis for future epidemiologic studies on acquired ADAMTS13 deficiency in DV infection. The prompt clinical recognition of this complication and early installment of specific therapy with plasma exchange are likely to improve the outcome of severe cases of dengue.
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Affiliation(s)
- Fernanda C Rossi
- Hematology and Hemotherapy Center, State University of Campinas, UNICAMP, Campinas, Brazil
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Park YA, Hay SN, Brecher ME. ADAMTS13 activity levels in patients with human immunodeficiency virus-associated thrombotic microangiopathy and profound CD4 deficiency. J Clin Apher 2009; 24:32-6. [PMID: 19156755 DOI: 10.1002/jca.20189] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
BACKGROUND Thrombotic microangiopathy (TMA) encompasses a number of disorders with hemolytic anemia and thrombocytopenia, including thrombotic thrombocytopenic purpura (TTP). A deficiency in ADAMTS13 enzyme levels, along with an inhibitory antibody, is found in most patients with idiopathic TTP. Patients with human immunodeficiency virus (HIV) infection can have a TTP-like illness; however, it appears to have a different etiology. METHODS A retrospective review of patients who had an ADAMTS13 activity level performed from 2005 through 2007 was completed. Patients with a diagnosis of HIV infection with TMA were investigated. RESULTS Two patients were identified. Case 1: a 47-year-old man with HIV infection and a CD4 count <10/microL presented with altered mental status, pneumonia, acute renal failure, thrombocytopenia, and anemia. The ADAMTS13 level was 71%. He was treated with plasma infusion. Two days after admission, he expired because of respiratory distress syndrome and metabolic lactic acidosis. Case 2: a 39-year-old man with HIV infection and a CD4 count of 9/microL presented with chest pain, acute renal failure, thrombocytopenia, and anemia. The ADAMTS13 level was 65%. He received multiple units of fresh frozen plasma without significant improvement in his platelet count. Six days after admission, the patient began highly active antiretroviral therapy, which resulted in a rapid increase in his platelet count. CONCLUSIONS HIV-associated TMA is postulated to have a different pathophysiology than idiopathic TTP. This study supports that assumption because both patients exhibited many of the classic findings of TTP but did not have a deficiency of ADAMTS13.
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Affiliation(s)
- Yara A Park
- Department of Pathology and Laboratory Medicine, University of North Carolina Hospitals, Chapel Hill, North Carolina, USA.
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