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Thachil J, Favaloro EJ, Lippi G. Are Antiphospholipid Antibodies a Surrogate Risk Factor for Thrombosis in Sepsis? Semin Thromb Hemost 2024; 50:284-287. [PMID: 37506732 DOI: 10.1055/s-0043-1771268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/30/2023]
Abstract
Antiphospholipid syndrome (APS) is a hypercoagulable state caused by antiphospholipid antibodies (aPL). APS clinically manifests with arterial or venous or microvascular thrombi and/or pregnancy complications. It is well-known that the development of aPL can be a transient phenomenon and thus the current diagnostic criterion for APS requires repeat laboratory testing several weeks apart before a definitive diagnosis is made. However, transient presence of aPL may also be pathogenic. In this article, we attempt to give historical and clinical evidence for the importance of these antibodies, even when transient, and call for further research into mechanisms by which these antibodies may promote thrombosis and pregnancy morbidities.
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Affiliation(s)
- Jecko Thachil
- Department of Haematology, Manchester University Hospitals, Manchester, United Kingdom
| | - Emmanuel J Favaloro
- Department of Haematology, Institute of Clinical Pathology and Medical Research (ICPMR), NSW Health Pathology, Westmead Hospital, Westmead, NSW, Australia
- Sydney Centres for Thrombosis and Haemostasis, Westmead, NSW, Australia
- Faculty of Science and Health, Charles Sturt University, Wagga Wagga, NSW, Australia
- School of Medical Sciences, Faculty of Medicine and Health, University of Sydney, Westmead Hospital, Westmead, New South Wales, Australia
| | - Giuseppe Lippi
- Section of Clinical Biochemistry, University of Verona, Verona, Italy
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Molinari AC, Martini T, Banov L, Ierardi A, Leotta M, Strangio A, Santoro RC. Lupus Anticoagulant Detection under the Magnifying Glass. J Clin Med 2023; 12:6654. [PMID: 37892792 PMCID: PMC10607820 DOI: 10.3390/jcm12206654] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 10/10/2023] [Accepted: 10/11/2023] [Indexed: 10/29/2023] Open
Abstract
Diagnosis of antiphospholipid syndrome (APS) requires the presence of a clinical criterion (thrombosis and/or pregnancy morbidity), combined with persistently circulating antiphospholipid antibodies (aPL). Lupus anticoagulant (LA) is one of the three laboratory parameters (the others being antibodies to either cardiolipin or β2-glycoprotein I) that defines this rare but potentially devastating condition. For the search for aCL and aβ2-GP-I, traditionally measured with immunological solid-phase assays (ELISA), several different assays and detection techniques are currently available, thus making these tests relatively reliable and widespread. On the other hand, LA detection is based on functional coagulation procedures that are characterized by poor standardization, difficulties in interpreting the results, and interference by several drugs commonly used in the clinical settings in which LA search is appropriate. This article aims to review the current state of the art and the challenges that clinicians and laboratories incur in the detection of LA.
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Affiliation(s)
- Angelo Claudio Molinari
- Thrombosis and Hemostasis Unit, IRCCS Istituto Giannina Gaslini, 16147 Genova, Italy; (A.C.M.); (L.B.)
| | - Tiziano Martini
- Immuno-Haematology and Transfusion Medicine, Center for Congenital Bleeding Disorders, Cesena General Hospital, 47521 Cesena, Italy
| | - Laura Banov
- Thrombosis and Hemostasis Unit, IRCCS Istituto Giannina Gaslini, 16147 Genova, Italy; (A.C.M.); (L.B.)
| | - Antonella Ierardi
- Hemostasis and Thrombosis Unit, Azienda Ospedaliero Universitaria Dulbecco, 88100 Catanzaro, Italy; (A.I.); (M.L.); (A.S.); (R.C.S.)
| | - Marzia Leotta
- Hemostasis and Thrombosis Unit, Azienda Ospedaliero Universitaria Dulbecco, 88100 Catanzaro, Italy; (A.I.); (M.L.); (A.S.); (R.C.S.)
| | - Alessandra Strangio
- Hemostasis and Thrombosis Unit, Azienda Ospedaliero Universitaria Dulbecco, 88100 Catanzaro, Italy; (A.I.); (M.L.); (A.S.); (R.C.S.)
| | - Rita Carlotta Santoro
- Hemostasis and Thrombosis Unit, Azienda Ospedaliero Universitaria Dulbecco, 88100 Catanzaro, Italy; (A.I.); (M.L.); (A.S.); (R.C.S.)
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Zhou H, Zou Y, Guo Y, Lv X, Chen J, Guo X, Liu Q. Effect of COVID-19 inactivated vaccine on peripheral blood anti-β 2-GPI antibody and outcomes in vitro fertilization-embryo transplantation. Int Immunopharmacol 2023; 122:110596. [PMID: 37441812 DOI: 10.1016/j.intimp.2023.110596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 06/29/2023] [Accepted: 06/30/2023] [Indexed: 07/15/2023]
Abstract
Corona Virus Disease 2019 (COVID-19) is an acute respiratory infection and a global public health event. The level of aβ2GPI is significantly up-regulated in COVID-19 patients. The impact of inactivated vaccination against COVID-19 on aβ2GPI and in vitro fertilization and embryo transfer (IVF-ET) remains unknown amidst the universal administration of COVID-19 vaccines. We conducted a retrospective study to assess the impact of COVID-19 inactivated vaccination on aβ2GPI levels and its effect on superovulation and pregnancy outcomes. We found aβ2GPI level is significantly up-regulated after vaccination. There was no statistical difference in mature egg rate, 2PN fertilization rate, day 3 high-quality embryo rate, blastocyst formation rate, embryo implantation rate and miscarriage rate between the vaccine group and control group. Our findings showed vaccination with COVID-19 inactivated vaccine can elevate the level of aβ2GPI in peripheral blood but have no effect on the outcomes of controlled ovarian hyperstimulation and pregnancy in IVF-ET.
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Affiliation(s)
- Huiling Zhou
- Department of Reproductive Medicine Center, First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, Fujian, China
| | - Yilu Zou
- Department of Reproductive Medicine Center, First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, Fujian, China; Fujian Provincial Key Laboratory of Stem Cell Engineering and Regenerative Medicine, Fuzhou 350004, Fujian, China
| | - Yujia Guo
- Department of Reproductive Medicine Center, First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, Fujian, China
| | - Xiaoting Lv
- Department of Respiratory and Critical Care Medicine, Research Laboratory of the Respiratory System Diseases, First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, Fujian, China
| | - Jiajing Chen
- Department of Reproductive Medicine Center, First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, Fujian, China
| | - Xinxin Guo
- Department of Reproductive Medicine Center, First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, Fujian, China; Fujian Provincial Key Laboratory of Stem Cell Engineering and Regenerative Medicine, Fuzhou 350004, Fujian, China.
| | - Qicai Liu
- Department of Reproductive Medicine Center, First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, Fujian, China.
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Amoura Z, Bader-Meunier B, Bal Dit Sollier C, Belot A, Benhamou Y, Bezanahary H, Cohen F, Costedoat-Chalumeau N, Darnige L, Drouet L, Elefant E, Harroche A, Lambert M, Martin T, Martin-Toutain I, Mathian A, Mekinian A, Pineton De Chambrun M, de Pontual L, Wahl D, Yelnik C, Zuily S. French National Diagnostic and Care Protocol for antiphospholipid syndrome in adults and children. Rev Med Interne 2023; 44:495-520. [PMID: 37735010 DOI: 10.1016/j.revmed.2023.08.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 08/29/2023] [Indexed: 09/23/2023]
Abstract
Antiphospholipid syndrome (APS) is a chronic autoimmune disease involving vascular thrombosis and/or obstetric morbidity and persistent antibodies to phospholipids or certain phospholipid-associated proteins. It is a rare condition in adults and even rarer in children. The diagnosis of APS can be facilitated by the use of classification criteria based on a combination of clinical and biological features. APS may be rapidly progressive with multiple, often synchronous thromboses, resulting in life-threatening multiple organ failure. This form is known as "catastrophic antiphospholipid syndrome" (CAPS). It may be primary or associated with systemic lupus erythematosus (associated APS) and in very rare cases with other systemic autoimmune diseases. General practitioners and paediatricians may encounter APS in patients with one or more vascular thromboses. Because APS is so rare and difficult to diagnosis (risk of overdiagnosis) any suspected case should be confirmed rapidly and sometimes urgently by an APS specialist. First-line treatment of thrombotic events in APS includes heparin followed by long-term anticoagulation with a VKA, usually warfarin. Except in the specific case of stroke, anticoagulants should be started as early as possible. Any temporary discontinuation of anticoagulants is associated with a high risk of thrombosis in APS. A reference/competence centre specialised in autoimmune diseases must be urgently consulted for the therapeutic management of CAPS.
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Affiliation(s)
- Z Amoura
- Department of Internal Medicine, Institut E3M, CIMI-Paris, Faculty of medicine, National Reference Centre of Systemic Lupus, antiphospholipid syndrome, and other autoimmune diseases, Sorbonne University, AP-HP, Pitié Salpêtrière, boulevard de l'Hôpital, 75013 Paris, France.
| | - B Bader-Meunier
- Laboratory of Immunogenetics of Paediatric Autoimmune Diseases, Institute Imagine, University Paris Cité, Paris, France
| | - C Bal Dit Sollier
- Thrombosis and atherosclerosis research unit, vessels and blood institute (IVS), anticoagulation clinic (CREATIF), Lariboisière hospital, AP-HP, 75010 Paris, France
| | - A Belot
- Department of Pediatric Nephrology, Rheumatology, Dermatology, Reference Centre for Rheumatic, AutoImmune and Systemic diseases in children (RAISE), hôpital femme mère enfant, CHU de Lyon, Bron, France
| | - Y Benhamou
- National Reference Centre of MicroAngiopathies Thrombotic, Paris, France; Department of Internal Medicine, University Hospital of Rouen, Normandie University, Rouen, France
| | - H Bezanahary
- Department of Internal Medicine and Clinical Immunology, centre hospitalier universitaire de Limoges, Limoges, France
| | - F Cohen
- Department of Internal Medicine, Institut E3M, CIMI-Paris, Faculty of medicine, National Reference Centre of Systemic Lupus, antiphospholipid syndrome, and other autoimmune diseases, Sorbonne University, AP-HP, Pitié Salpêtrière, boulevard de l'Hôpital, 75013 Paris, France
| | - N Costedoat-Chalumeau
- Department of Internal Medicine, Referral Centre for Rare Autoimmune and Systemic Diseases of Île-de-France, AP-HP, Cochin Hospital, Paris, France; Centre for Epidemiology and Statistics, Institut national de la santé et de la recherche médicale, French National Institute for Agricultural Research, University Paris Cité, Paris, France
| | - L Darnige
- Biological Hematology Department, Assistance publique-Hôpitaux de Paris, hôpital européen Georges-Pompidou, Inserm, UMR-S1140, Innovative Therapies in Haemostasis, Paris, France
| | - L Drouet
- Thrombosis and atherosclerosis research unit, vessels and blood institute (IVS), anticoagulation clinic (CREATIF), Lariboisière hospital, AP-HP, 75010 Paris, France
| | - E Elefant
- Reference Center for Teratogenic Agents, hôpital Armand-Trousseau centre de référence sur les agents tératogènes, Île-de-France, Paris, France
| | - A Harroche
- Department of Hematology, Haemophilia Treatment Centre, University Hospital Necker Enfants Malades, Paris, France
| | - M Lambert
- Department of Internal Medicine and Clinical immunology, Reference Centre of Autoimmune Systemic Rare Diseases Of North And North-West of France (CeRAINO), U1167 RID-AGE, Lille University, Inserm, University hospital of Lille, 59000 Lille, France
| | - T Martin
- Department of Internal Medicine and Clinical Immunology, Strasbourg University Hospital, Strasbourg, France
| | - I Martin-Toutain
- Resource and Competence Centre for Haemorrhagic Diseases, Hospital Center of Versailles André-Mignot, Le Chesnay, France
| | - A Mathian
- Department of Internal Medicine, Institut E3M, CIMI-Paris, Faculty of medicine, National Reference Centre of Systemic Lupus, antiphospholipid syndrome, and other autoimmune diseases, Sorbonne University, AP-HP, Pitié Salpêtrière, boulevard de l'Hôpital, 75013 Paris, France
| | - A Mekinian
- Department of Internal Medicine and Inflammation-Immunopathology-Biotherapy (DMU i3), Saint-Antoine Hospital, Sorbonne University, AP-HP, 75012 Paris, France
| | - M Pineton De Chambrun
- Department of Internal Medicine, Institut E3M, CIMI-Paris, Faculty of medicine, National Reference Centre of Systemic Lupus, antiphospholipid syndrome, and other autoimmune diseases, Sorbonne University, AP-HP, Pitié Salpêtrière, boulevard de l'Hôpital, 75013 Paris, France
| | - L de Pontual
- Department of Paediatrics, Jean-Verdier Hospital, AP-HP, HUPSSD, 93140 Bondy, France
| | - D Wahl
- Vascular Medicine Division and Regional Competence Centre for Rare Vascular and Systemic Autoimmune Diseases, CHRU de Nancy, Nancy, France
| | - C Yelnik
- Department of Internal Medicine and Clinical immunology, Reference Centre of Autoimmune Systemic Rare Diseases Of North And North-West of France (CeRAINO), U1167 RID-AGE, Lille University, Inserm, University hospital of Lille, 59000 Lille, France
| | - S Zuily
- Vascular Medicine Division and Regional Competence Centre for Rare Vascular and Systemic Autoimmune Diseases, CHRU de Nancy, Nancy, France
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Alijotas-Reig J, Anunciación-Llunell A, Morales-Pérez S, Trapé J, Esteve-Valverde E, Miro-Mur F. Thrombosis and Hyperinflammation in COVID-19 Acute Phase Are Related to Anti-Phosphatidylserine and Anti-Phosphatidylinositol Antibody Positivity. Biomedicines 2023; 11:2301. [PMID: 37626797 PMCID: PMC10452204 DOI: 10.3390/biomedicines11082301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 08/11/2023] [Accepted: 08/12/2023] [Indexed: 08/27/2023] Open
Abstract
Antiphospholipid antibodies (APLA) are strongly associated with thrombosis seen in patients with antiphospholipid syndrome. In COVID-19, thrombosis has been observed as one of the main comorbidities. In patients hospitalised for COVID-19, we want to check whether APLA positivity is associated with COVID-19-related thrombosis, inflammation, severity of disease, or long COVID-19. We enrolled 92 hospitalised patients with COVID-19 between March and April 2020 who were tested for 18 different APLAs (IgG and IgM) with a single line-immunoassay test. A total of 30 healthy blood donors were used to set the cut-off for each APLA positivity. Of the 92 COVID-19 inpatients, 30 (32.61%; 95% CI [23.41-43.29]) tested positive for APLA, of whom 10 (33.3%; 95% CI [17.94-52.86]) had more than one APLA positivity. Anti-phosphatidylserine IgM positivity was described in 5.4% of inpatients (n = 5) and was associated with the occurrence of COVID-19-related thrombosis (p = 0.046). Anti-cardiolipin IgM positivity was the most prevalent among the inpatients (n = 12, 13.0%) and was associated with a recorded thrombosis in their clinical history (p = 0.044); however, its positivity was not associated with the occurrence of thrombosis during their hospitalisation for COVID-19. Anti-phosphatidylinositol IgM positivity, with a prevalence of 5.4% (n = 5), was associated with higher levels of interleukin (IL)-6 (p = 0.007) and ferritin (p = 0.034). Neither of these APLA positivities was a risk factor for COVID-19 severity or a predictive marker for long COVID-19. In conclusion, almost a third of COVID-19 inpatients tested positive for at least one APLA. Anti-phosphatidylserine positivity in IgM class was associated with thrombosis, and anti-phosphatidylinositol positivity in IgM class was associated with inflammation, as noticed by elevated levels of IL-6. Thus, testing for non-criteria APLA to assess the risk of clinical complications in hospitalised COVID-19 patients might be beneficial. However, they were not related to disease severity or long COVID-19.
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Affiliation(s)
- Jaume Alijotas-Reig
- Systemic Autoimmune Diseases Research Unit, Vall d’Hebron Institut de Recerca (VHIR), 08035 Barcelona, Catalonia, Spain;
- Systemic Autoimmune Diseases Unit, Department of Internal Medicine, Hospital Universitari Vall d’Hebron (HUVH), 08035 Barcelona, Catalonia, Spain
- Department of Medicine, Faculty of Medicine, Universitat Autònoma de Barcelona (UAB), 08035 Barcelona, Catalonia, Spain
| | - Ariadna Anunciación-Llunell
- Systemic Autoimmune Diseases Research Unit, Vall d’Hebron Institut de Recerca (VHIR), 08035 Barcelona, Catalonia, Spain;
| | - Stephanie Morales-Pérez
- Systemic Autoimmune Disease Unit, Internal Medicine Department, Althaia Healthcare University Network of Manresa, 08243 Manresa, Catalonia, Spain (J.T.)
| | - Jaume Trapé
- Systemic Autoimmune Disease Unit, Internal Medicine Department, Althaia Healthcare University Network of Manresa, 08243 Manresa, Catalonia, Spain (J.T.)
| | - Enrique Esteve-Valverde
- Systemic Autoimmune Diseases Unit, Department of Internal Medicine, Hospital Universitari Parc Taulí, 08208 Sabadell, Catalonia, Spain
| | - Francesc Miro-Mur
- Systemic Autoimmune Diseases Research Unit, Vall d’Hebron Institut de Recerca (VHIR), 08035 Barcelona, Catalonia, Spain;
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Dolgushina NV, Menzhinskaya IV, Ermakova DM, Frankevich NA, Vtorushina VV, Sukhikh GT. The Effect of COVID-19 Severity, Associated Serum Autoantibodies and Time Interval after the Disease on the Outcomes of Fresh Oocyte ART Cycles in Non-Vaccinated Patients. J Clin Med 2023; 12:4370. [PMID: 37445405 DOI: 10.3390/jcm12134370] [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: 05/11/2023] [Revised: 06/09/2023] [Accepted: 06/23/2023] [Indexed: 07/15/2023] Open
Abstract
It is assumed that SARS-CoV-2- and COVID-19-associated autoimmune processes may affect the outcomes of assisted reproductive technology (ART) cycles. This observational prospective study included 240 infertile patients: 105 patients had no history of COVID-19 (group 1) and 135 patients had experienced COVID-19 (group 2) in a mild (n = 85) or moderate (n = 50) form less than 12 months prior to oocyte retrieval. Using ELISAs, the profiles of their serum autoantibodies were determined, including antiphospholipid antibodies and antibodies to nuclear and thyroid antigens. The parameters of oogenesis and embryogenesis, as well as the pregnancy and childbirth rates, did not differ between groups 1 and 2, and also between the subgroups with different severities of COVID-19. However, when oocyte retrieval was performed less than 180 days after COVID-19, a higher proportion of poor-quality blastocysts was obtained (p = 0.006). A high risk of early miscarriage was found in the patients with moderate COVID-19. In group 2, IgG antibodies to annexin V, phosphatidylethanolamine (PE), and TSHr were detected more often than in group 1 (p = 0.035; p = 0.028; and p = 0.033, respectively), and a weak inverse correlation was revealed between anti-PE IgG and the number of oocytes and zygotes obtained. The results of the study suggest a possible adverse effect of COVID-19 and its associated autoantibodies on the outcomes of fresh oocyte ART cycles and early pregnancy, which depends on the severity of COVID-19 and the time interval after the disease.
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Affiliation(s)
- Nataliya V Dolgushina
- National Medical Research Center for Obstetrics, Gynecology and Perinatology Named after Academician V.I. Kulakov of Ministry of Healthcare of the Russian Federation, 117997 Moscow, Russia
- Department of Obstetrics, Gynecology, Perinatology and Reproductology, Institute of Professional Education, Federal State Autonomous Educational Institution of Higher Education the First Moscow State Medical University Named after I.M. Sechenov of Ministry of Health of the Russian Federation (Sechenov University), 119048 Moscow, Russia
| | - Irina V Menzhinskaya
- National Medical Research Center for Obstetrics, Gynecology and Perinatology Named after Academician V.I. Kulakov of Ministry of Healthcare of the Russian Federation, 117997 Moscow, Russia
| | - Daria M Ermakova
- National Medical Research Center for Obstetrics, Gynecology and Perinatology Named after Academician V.I. Kulakov of Ministry of Healthcare of the Russian Federation, 117997 Moscow, Russia
| | - Natalia A Frankevich
- National Medical Research Center for Obstetrics, Gynecology and Perinatology Named after Academician V.I. Kulakov of Ministry of Healthcare of the Russian Federation, 117997 Moscow, Russia
| | - Valentina V Vtorushina
- National Medical Research Center for Obstetrics, Gynecology and Perinatology Named after Academician V.I. Kulakov of Ministry of Healthcare of the Russian Federation, 117997 Moscow, Russia
| | - Gennady T Sukhikh
- National Medical Research Center for Obstetrics, Gynecology and Perinatology Named after Academician V.I. Kulakov of Ministry of Healthcare of the Russian Federation, 117997 Moscow, Russia
- Department of Obstetrics, Gynecology, Perinatology and Reproductology, Institute of Professional Education, Federal State Autonomous Educational Institution of Higher Education the First Moscow State Medical University Named after I.M. Sechenov of Ministry of Health of the Russian Federation (Sechenov University), 119048 Moscow, Russia
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Blickstein D, Izak M, Filipovich-Rimon T, Garach-Jehoshua O, Rahimi-Levene N, Shinar E, Hamad RA, Bar-Chaim A, Koren-Michowitz M. Antiphospholipid antibodies in convalescent plasma of donors recovered from mild COVID-19 infection. Vox Sang 2023. [PMID: 37191363 DOI: 10.1111/vox.13439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 04/24/2023] [Accepted: 04/25/2023] [Indexed: 05/17/2023]
Abstract
BACKGROUND AND OBJECTIVES Passive immunization by the infusion of convalescent plasma (CP) obtained from patients who have recently recovered from COVID-19, thus having antibodies to severe acute respiratory syndrome coronavirus 2, is a potential strategy to reduce the severity of illness. A high prevalence of antiphospholipid antibodies (APLA) in patients with COVID-19 has been reported during the pandemic, raising a concern whether the use of CP could increase the risk of thrombosis in transfused patients. We aimed to evaluate the prevalence of APLA in COVID-19 CP (CCP) in order to assess the potential prothrombotic influence of transfused CCP to COVID-19 patients. MATERIALS AND METHODS We studied the prevalence of APLA in 122 CCP samples collected from healthy donors who recovered from mild-COVID-19 at two time periods: September 2020-January 2021 (defined as 'early period' samples) and April-May 2021 (defined as 'late period' samples). Thirty-four healthy subjects unexposed to COVID-19 were used as controls. RESULTS APLA were present in 7 of 122 (6%) CCP samples. One donor had anti-β2-glycoprotein 1(anti-β2GP1) IgG, one had anti-β2GP1 IgM and five had lupus anticoagulant (LAC) using silica clotting time (SCT), all in 'late period' donors. In the control group, one subject had anti-β2GP1 IgG, two had LAC using dilute Russell viper venom time (dRVVT) and four had LAC SCT (both LAC SCT and LAC dRVVT in one subject). CONCLUSION The low prevalence of APLA in CCP donors reassures the safety of CCP administration to patients with severe COVID-19.
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Affiliation(s)
- Dorit Blickstein
- Department of Hematology, Shamir Medical Center, Be'er Ya'akov, Israel
| | - Marina Izak
- Magen David Adom National Blood Services, Ramat Gan, Israel
| | | | | | | | - Eilat Shinar
- Magen David Adom National Blood Services, Ramat Gan, Israel
| | - Ramzia Abu Hamad
- Clinical Chemistry Laboratory, Shamir Medical Center, Be'er Ya'akov, Israel
| | - Adina Bar-Chaim
- Clinical Laboratories, Shamir Medical Center, Be'er Ya'akov, Israel
| | - Maya Koren-Michowitz
- Department of Hematology, Shamir Medical Center, Be'er Ya'akov, Israel
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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Singh TK, Zidar DA, McCrae K, Highland KB, Englund K, Cameron SJ, Chung MK. A Post-Pandemic Enigma: The Cardiovascular Impact of Post-Acute Sequelae of SARS-CoV-2. Circ Res 2023; 132:1358-1373. [PMID: 37167358 PMCID: PMC10171306 DOI: 10.1161/circresaha.122.322228] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
COVID-19 has become the first modern-day pandemic of historic proportion, affecting >600 million individuals worldwide and causing >6.5 million deaths. While acute infection has had devastating consequences, postacute sequelae of SARS-CoV-2 infection appears to be a pandemic of its own, impacting up to one-third of survivors and often causing symptoms suggestive of cardiovascular phenomena. This review will highlight the suspected pathophysiology of postacute sequelae of SARS-CoV-2, its influence on the cardiovascular system, and potential treatment strategies.
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Affiliation(s)
- Tamanna K Singh
- Heart, Vascular, and Thoracic Institute, Cleveland Clinic, Cleveland, OH (TKS, MC, SJC)
- Cleveland Clinic Lerner College of Medicine, OH (T.K.S., K.M., K.B.H., K.E., S.J.C., M.K.C.)
- Case Western Reserve University School of Medicine, Cleveland, OH (T.K.S., D.A.Z., K.M., K.B.H., K.E., S.J.C., M.K.C.)
| | - David A Zidar
- Case Western Reserve University School of Medicine, Cleveland, OH (T.K.S., D.A.Z., K.M., K.B.H., K.E., S.J.C., M.K.C.)
- Louise Stokes Cleveland Veterans Affairs Medical Center, Department of Cardiovascular Medicine, Cleveland, OH (D.A.Z.)
| | - Keith McCrae
- Hematology and Medical Oncology, Cleveland Clinic, Cleveland, OH (KM)
- Cleveland Clinic Lerner College of Medicine, OH (T.K.S., K.M., K.B.H., K.E., S.J.C., M.K.C.)
- Case Western Reserve University School of Medicine, Cleveland, OH (T.K.S., D.A.Z., K.M., K.B.H., K.E., S.J.C., M.K.C.)
| | - Kristin B Highland
- Pulmonary Medicine, Cleveland Clinic, Cleveland, OH (KBH)
- Cleveland Clinic Lerner College of Medicine, OH (T.K.S., K.M., K.B.H., K.E., S.J.C., M.K.C.)
- Case Western Reserve University School of Medicine, Cleveland, OH (T.K.S., D.A.Z., K.M., K.B.H., K.E., S.J.C., M.K.C.)
| | - Kristin Englund
- Infectious Disease, Cleveland Clinic, Cleveland, OH (KE)
- Cleveland Clinic Lerner College of Medicine, OH (T.K.S., K.M., K.B.H., K.E., S.J.C., M.K.C.)
- Case Western Reserve University School of Medicine, Cleveland, OH (T.K.S., D.A.Z., K.M., K.B.H., K.E., S.J.C., M.K.C.)
| | - Scott J Cameron
- Heart, Vascular, and Thoracic Institute, Cleveland Clinic, Cleveland, OH (TKS, MC, SJC)
- Cleveland Clinic Lerner College of Medicine, OH (T.K.S., K.M., K.B.H., K.E., S.J.C., M.K.C.)
- Case Western Reserve University School of Medicine, Cleveland, OH (T.K.S., D.A.Z., K.M., K.B.H., K.E., S.J.C., M.K.C.)
| | - Mina K Chung
- Cleveland Clinic Lerner College of Medicine, OH (T.K.S., K.M., K.B.H., K.E., S.J.C., M.K.C.)
- Case Western Reserve University School of Medicine, Cleveland, OH (T.K.S., D.A.Z., K.M., K.B.H., K.E., S.J.C., M.K.C.)
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9
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Root-Bernstein R. From Co-Infections to Autoimmune Disease via Hyperactivated Innate Immunity: COVID-19 Autoimmune Coagulopathies, Autoimmune Myocarditis and Multisystem Inflammatory Syndrome in Children. Int J Mol Sci 2023; 24:ijms24033001. [PMID: 36769320 PMCID: PMC9917907 DOI: 10.3390/ijms24033001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 01/21/2023] [Accepted: 01/23/2023] [Indexed: 02/05/2023] Open
Abstract
Neutrophilia and the production of neutrophil extracellular traps (NETs) are two of many measures of increased inflammation in severe COVID-19 that also accompany its autoimmune complications, including coagulopathies, myocarditis and multisystem inflammatory syndrome in children (MIS-C). This paper integrates currently disparate measures of innate hyperactivation in severe COVID-19 and its autoimmune complications, and relates these to SARS-CoV-2 activation of innate immunity. Aggregated data include activation of Toll-like receptors (TLRs), nucleotide-binding oligomerization domain (NOD) receptors, NOD leucine-rich repeat and pyrin-domain-containing receptors (NLRPs), retinoic acid-inducible gene I (RIG-I) and melanoma-differentiation-associated gene 5 (MDA-5). SARS-CoV-2 mainly activates the virus-associated innate receptors TLR3, TLR7, TLR8, NLRP3, RIG-1 and MDA-5. Severe COVID-19, however, is characterized by additional activation of TLR1, TLR2, TLR4, TLR5, TLR6, NOD1 and NOD2, which are primarily responsive to bacterial antigens. The innate activation patterns in autoimmune coagulopathies, myocarditis and Kawasaki disease, or MIS-C, mimic those of severe COVID-19 rather than SARS-CoV-2 alone suggesting that autoimmunity follows combined SARS-CoV-2-bacterial infections. Viral and bacterial receptors are known to synergize to produce the increased inflammation required to support autoimmune disease pathology. Additional studies demonstrate that anti-bacterial antibodies are also required to account for known autoantigen targets in COVID-19 autoimmune complications.
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10
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Garcia-Arellano G, Camacho-Ortiz A, Moreno-Arquieta IA, Cardenas-de la Garza JA, Rubio-Torres DC, Garza-Gonzalez E, Bocanegra-Ibarias P, Galarza-Delgado DA. Anticardiolipin and anti-beta-2 glycoprotein I antibodies in patients with moderate or severe COVID-19. Am J Med Sci 2023; 365:215-217. [PMID: 36335994 PMCID: PMC9632263 DOI: 10.1016/j.amjms.2022.10.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 08/22/2022] [Accepted: 10/27/2022] [Indexed: 11/06/2022]
Affiliation(s)
- Gisela Garcia-Arellano
- Rheumatology Service, “Dr José Eleuterio González” University Hospital, Universidad Autónoma de Nuevo León, Monterrey, México
| | - Adrian Camacho-Ortiz
- Infectiology Department, “Dr José Eleuterio González” University Hospital, Universidad Autónoma de Nuevo León, Monterrey, México
| | - Ilse Andrea Moreno-Arquieta
- Rheumatology Service, “Dr José Eleuterio González” University Hospital, Universidad Autónoma de Nuevo León, Monterrey, México
| | | | - Diana Carolina Rubio-Torres
- Rheumatology Service, “Dr José Eleuterio González” University Hospital, Universidad Autónoma de Nuevo León, Monterrey, México
| | - Elvira Garza-Gonzalez
- Infectiology Department, “Dr José Eleuterio González” University Hospital, Universidad Autónoma de Nuevo León, Monterrey, México
| | - Paola Bocanegra-Ibarias
- Infectiology Department, “Dr José Eleuterio González” University Hospital, Universidad Autónoma de Nuevo León, Monterrey, México
| | - Dionicio Angel Galarza-Delgado
- Rheumatology Service, "Dr José Eleuterio González" University Hospital, Universidad Autónoma de Nuevo León, Monterrey, México.
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11
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Sadeghi A, Hasanlu M, Feyzi A, Mansori K, Ghodrati S, Parsamanesh N. Evaluating the Relationship Between Antiphospholipid Antibodies and COVID-19 Severity. DNA Cell Biol 2023; 42:65-71. [PMID: 36394439 DOI: 10.1089/dna.2022.0293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Coronavirus 2 (COVID-19) has emerged as a new global pandemic, causing severe acute respiratory syndrome. Furthermore, the existence of antiphospholipid (APL) antibodies (Abs) and ultimately patient death may be linked to the occurrence of thrombotic events in patients with COVID-19. We aimed to investigate if there was a link between the presence of APL Abs and the severity of COVID-19 disease in patients at the Vali-Asr Hospital in Zanjan from June to July 2021. Real-time PCR was used to diagnose COVID-19 in 76 hospitalized patients. A total of 38 patients were hospitalized in the internal medicine ward and another 38 people were admitted to the intensive care unit of the Vali-Asr Educational Hospital in Iran's Zanjan region. Lupus anticoagulant (LAC) detection was done using the dilute Russell viper venom time method, and tests for anticardiolipin (ACL) Abs, IgG and IgM, and anti-beta2 glycoprotein 1 Abs, IgG and IgM, were done on blood and plasma samples of linked patients using the enzyme-linked immunosorbent assay technique. SPSS 24 was used to analyze data. Our findings showed that the presence of LAC was associated with disease severity in COVID-19 patients (p = 0.001). However, there was no significant relationship between APL Abs and mortality in patients affected with COVID-19. The evaluation of APL Abs, particularly LAC, in COVID-19 patients appears to be helpful in predicting the severity of the disease.
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Affiliation(s)
- Alireza Sadeghi
- Department of Internal Medicine, Vali-e-Asr Hospital, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Masumeh Hasanlu
- Department of Internal Medicine, Vali-e-Asr Hospital, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Abdolamir Feyzi
- Department of Pathology, Vali-e-Asr Hospital, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Kamyar Mansori
- Department of Biostatistics and Epidemiology, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Samad Ghodrati
- Department of Pulmonology, Vali-e-Asr Hospital, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Negin Parsamanesh
- Metabolic Diseases Research Center, Zanjan University of Medical Sciences, Zanjan, Iran
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12
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Tsukamoto Y, Sugimoto T, Umeda M, Kato T, Hiura Y, Morita K, Ariyoshi K. A Patient with Severe Fever with Thrombocytopenia Syndrome, Activated Partial Thromboplastin Time Prolongation, and Transient Antiphospholipid Antibodies. Intern Med 2022. [PMID: 36476549 PMCID: PMC10400393 DOI: 10.2169/internalmedicine.0782-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
A prolonged activated partial thromboplastin time (APTT) is observed in patients with severe fever with thrombocytopenia syndrome (SFTS) and is one of the risk factors for severe disease. The mechanism underlying a prolonged APTT is largely unknown. The presence of antiphospholipid (aPL) antibodies in various viral infections has been documented but never reported in a patient with SFTS. We herein report the first SFTS patient with APTT prolongation and concurrent transiently positive aPL antibodies (lupus anticoagulants and anticardiolipin antibodies) with no coagulation factor deficiency.
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Affiliation(s)
- Yutaka Tsukamoto
- Department of Clinical Medicine, Institute of Tropical Medicine, Nagasaki University, Japan
| | - Takashi Sugimoto
- Department of Clinical Medicine, Institute of Tropical Medicine, Nagasaki University, Japan
| | - Masataka Umeda
- Department of Immunology and Rheumatology, Nagasaki University Graduate School of Biomedical Sciences, Japan
- Department of General Medicine, Nagasaki University Graduate School of Biomedical Sciences, Japan
| | - Takeharu Kato
- Department of Hematology, Nagasaki University Hospital, Japan
| | - Yukari Hiura
- Department of Dermatology, Hiura Hospital, Japan
| | - Kouichi Morita
- Department of Virology, Institute of Tropical Medicine, Nagasaki University, Japan
| | - Koya Ariyoshi
- Department of Clinical Medicine, Institute of Tropical Medicine, Nagasaki University, Japan
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13
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Serrano M, Espinosa G, Serrano A, Cervera R. COVID-19 and the antiphospholipid syndrome. Autoimmun Rev 2022; 21:103206. [PMID: 36195247 PMCID: PMC9527199 DOI: 10.1016/j.autrev.2022.103206] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 09/28/2022] [Indexed: 01/08/2023]
Abstract
Coronavirus disease 2019 (COVID-19) has resulted in a global pandemic. Most COVID-19 patients are asymptomatic or have flu-like symptoms. However, around 15% of the patients may have severe disease, including unilateral or bilateral pneumonia with acute respiratory distress syndrome and progressive hypoxemia that may require mechanical ventilation assistance. A systemic inflammatory response syndrome occurs in the most severe forms of COVID-19, with multiorgan involvement which can be life threatening caused by a cytokine storm. Although what best characterizes COVID-19 are the manifestations of the respiratory system, it has been shown that it also acts at the cardiovascular level, producing coagulation abnormalities, which causes thrombotic events mainly in the arteries/arterioles, microcirculation and venous system, and potentially increased mortality risk. This multiorgan vascular disease overlaps with other known microangiopathies, such as thrombotic microangiopathy or paroxysmal nocturnal hemoglobinuria, where complement overactivation plays an important role in the pathophysiology of thrombosis. Furthermore, coagulopathy secondary to COVID-19 occurs in the context of an uncontrolled inflammatory response, reminiscent of APS, especially in its catastrophic form. This review summarizes the current knowledge regarding the relationship between COVID-19 and the APS.
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Affiliation(s)
- Manuel Serrano
- Department of Immunology, Healthcare Research Institute I+12, Hospital 12 de Octubre, Madrid, Spain
| | - Gerard Espinosa
- Department of Autoimmune Diseases, Hospital Clínic, Insititut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Universitat de Barcelona, Barcelona, Catalonia, Spain
| | - Antonio Serrano
- Department of Immunology, Healthcare Research Institute I+12, Hospital 12 de Octubre, Madrid, Spain
| | - Ricard Cervera
- Department of Autoimmune Diseases, Hospital Clínic, Insititut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Universitat de Barcelona, Barcelona, Catalonia, Spain,Corresponding author at: Servei de Malalties Autoimmunes, Hospital Clínic, Villarroel, 170, 08036 Barcelona, Catalonia, Spain
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14
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Wu T, Huang W, Qi J, Li Y, Zhang Y, Jiang H, Wang J, Zhang J, Jiang Z, Chen L, Ying Z. Research trends and frontiers on antiphospholipid syndrome: A 10-year bibliometric analysis (2012-2021). Front Pharmacol 2022; 13:1035229. [PMID: 36386238 PMCID: PMC9664156 DOI: 10.3389/fphar.2022.1035229] [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: 09/02/2022] [Accepted: 10/13/2022] [Indexed: 01/24/2023] Open
Abstract
Objectives: A growing body of studies related to antiphospholipid syndrome (APS) have been published in recent years. Nevertheless, there is a lack of visualized and systematic analysis in the literature on APS. Hence, this study sought to conduct a bibliometric analysis to identify research status and discover frontiers in the field. Methods: Articles and reviews concerning APS were acquired from the Web of Science Core Collection (WoSCC) database. CiteSpace, VOSviewer and a bibliometric online analysis platform were employed to conduct a visualization and knowledge-map analysis. Results: A total of 1,390 publications regarding APS were identified. Globally, Italy contributed the most publications. The University of Padua was the most productive institution. Lupus ranked first in both the most published and most co-cited journals. Savino Sciascia and Spiros Miyakis were the most prolific and most co-cited authors, respectively. "Vitamin K antagonists (VKA)" and "immunoglobulin A (IgA)" were current research foci. Burst analysis of keywords suggested that "neutrophil extracellular trap (NET)," "direct oral anticoagulant (DOAC)," "open label," "outcome," "hydroxychloroquine (HCQ)," and "arterial thrombosis (AT)" were significant future research frontiers. Conclusion: The scientific literature on APS has increased steadily in the past 10 years. The clinical studies on the treatment and mechanism research of APS are recognized as promising research hotspots in the domain of APS. The research status and trends of APS publications from the bibliometric perspective can provide a practical guide and important reference for subsequent studies by researchers and physicians in the domain.
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Affiliation(s)
- Teng Wu
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China,Zhejiang Provincial People’s Hospital, Hangzhou Medical College Affiliated People’s Hospital, Rheumatism and Immunity Research Institute, Hangzhou, China
| | - Wei Huang
- Zhejiang Provincial People’s Hospital, Hangzhou Medical College Affiliated People’s Hospital, Rheumatism and Immunity Research Institute, Hangzhou, China,Qingdao University, Qingdao, China
| | - Jiaping Qi
- Zhejiang Provincial People’s Hospital, Hangzhou Medical College Affiliated People’s Hospital, Rheumatism and Immunity Research Institute, Hangzhou, China,Bengbu Medical College, Bengbu, China
| | - Yixuan Li
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China,Zhejiang Provincial People’s Hospital, Hangzhou Medical College Affiliated People’s Hospital, Rheumatism and Immunity Research Institute, Hangzhou, China
| | - Yuan Zhang
- Zhejiang Provincial People’s Hospital, Hangzhou Medical College Affiliated People’s Hospital, Rheumatism and Immunity Research Institute, Hangzhou, China,Bengbu Medical College, Bengbu, China
| | - Huan Jiang
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China,Zhejiang Provincial People’s Hospital, Hangzhou Medical College Affiliated People’s Hospital, Rheumatism and Immunity Research Institute, Hangzhou, China
| | - Jing Wang
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China,Zhejiang Provincial People’s Hospital, Hangzhou Medical College Affiliated People’s Hospital, Rheumatism and Immunity Research Institute, Hangzhou, China
| | - Ju Zhang
- Zhejiang Provincial People’s Hospital, Hangzhou Medical College Affiliated People’s Hospital, Rheumatism and Immunity Research Institute, Hangzhou, China
| | - Zhaoyu Jiang
- Zhejiang Provincial People’s Hospital, Hangzhou Medical College Affiliated People’s Hospital, Rheumatism and Immunity Research Institute, Hangzhou, China
| | - Lin Chen
- Zhejiang Provincial People’s Hospital, Hangzhou Medical College Affiliated People’s Hospital, Rheumatism and Immunity Research Institute, Hangzhou, China
| | - Zhenhua Ying
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China,Zhejiang Provincial People’s Hospital, Hangzhou Medical College Affiliated People’s Hospital, Rheumatism and Immunity Research Institute, Hangzhou, China,Qingdao University, Qingdao, China,Bengbu Medical College, Bengbu, China,*Correspondence: Zhenhua Ying,
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15
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Root-Bernstein R, Huber J, Ziehl A. Complementary Sets of Autoantibodies Induced by SARS-CoV-2, Adenovirus and Bacterial Antigens Cross-React with Human Blood Protein Antigens in COVID-19 Coagulopathies. Int J Mol Sci 2022; 23:ijms231911500. [PMID: 36232795 PMCID: PMC9569991 DOI: 10.3390/ijms231911500] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 09/20/2022] [Accepted: 09/21/2022] [Indexed: 12/11/2022] Open
Abstract
COVID-19 patients often develop coagulopathies including microclotting, thrombotic strokes or thrombocytopenia. Autoantibodies are present against blood-related proteins including cardiolipin (CL), serum albumin (SA), platelet factor 4 (PF4), beta 2 glycoprotein 1 (β2GPI), phosphodiesterases (PDE), and coagulation factors such as Factor II, IX, X and von Willebrand factor (vWF). Different combinations of autoantibodies associate with different coagulopathies. Previous research revealed similarities between proteins with blood clotting functions and SARS-CoV-2 proteins, adenovirus, and bacterial proteins associated with moderate-to-severe COVID-19 infections. This study investigated whether polyclonal antibodies (mainly goat and rabbit) against these viruses and bacteria recognize human blood-related proteins. Antibodies against SARS-CoV-2 and adenovirus recognized vWF, PDE and PF4 and SARS-CoV-2 antibodies also recognized additional antigens. Most bacterial antibodies tested (group A streptococci [GAS], staphylococci, Escherichia coli [E. coli], Klebsiella pneumoniae, Clostridia, and Mycobacterium tuberculosis) cross-reacted with CL and PF4. while GAS antibodies also bound to F2, Factor VIII, Factor IX, and vWF, and E. coli antibodies to PDE. All cross-reactive interactions involved antibody-antigen binding constants smaller than 100 nM. Since most COVID-19 coagulopathy patients display autoantibodies against vWF, PDE and PF4 along with CL, combinations of viral and bacterial infections appear to be necessary to initiate their autoimmune coagulopathies.
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16
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Butt A, Erkan D, Lee AI. COVID-19 and antiphospholipid antibodies. Best Pract Res Clin Haematol 2022; 35:101402. [PMID: 36494152 PMCID: PMC9568270 DOI: 10.1016/j.beha.2022.101402] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 10/07/2022] [Accepted: 10/11/2022] [Indexed: 12/14/2022]
Abstract
Antiphospholipid syndrome and the coagulopathy of COVID-19 share many pathophysiologic features, including endotheliopathy, hypercoagulability, and activation of platelets, complement pathways, and neutrophil extracellular traps, all acting in concert via a model of immunothrombosis. Antiphospholipid antibody production in COVID-19 is common, with 50% of COVID-19 patients being positive for lupus anticoagulant in some studies, and with non-Sapporo criteria antiphospholipid antibodies being prevalent as well. The biological significance of antiphospholipid antibodies in COVID-19 is uncertain, as such antibodies are usually transient, and studies examining clinical outcomes in COVID-19 patients with and without antiphospholipid antibodies have yielded conflicting results. In this review, we explore the biology of antiphospholipid antibodies in COVID-19 and other infections and discuss mechanisms of thrombogenesis in antiphospholipid syndrome and parallels with COVID-19 coagulopathy. In addition, we review the existing literature on safety of COVID-19 vaccination in patients with antiphospholipid antibodies and antiphospholipid syndrome.
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Affiliation(s)
- Ayesha Butt
- Section of Hematology, Department of Medicine, Yale School of Medicine, 333 Cedar St., New Haven, CT, 06520, USA.
| | - Doruk Erkan
- Barbara Volcker Center for Women and Rheumatic Diseases, Hospital for Special Surgery and Weill Cornell Medicine, 535 E. 70th St., 6th floor, New York, NY, 10021, USA.
| | - Alfred Ian Lee
- Section of Hematology, Department of Medicine, Yale School of Medicine, 333 Cedar St., New Haven, CT, 06520, USA.
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17
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Kahlon N, Shazadeh Safavi P, Abuhelwa Z, Sheikh T, Burmeister C, Doddi S, Assaly R, Barnett W. Prevalence and Clinical Significance of Antiphospholipid Antibodies in Hospitalized Patients With COVID-19 Infection. Cureus 2022; 14:e27862. [PMID: 36110457 PMCID: PMC9462592 DOI: 10.7759/cureus.27862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/10/2022] [Indexed: 11/05/2022] Open
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18
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Abstract
COVID-19 is a primary respiratory illness that is frequently complicated by systemic involvement of the vasculature. Vascular involvement leads to an array of complications ranging from thrombosis to pulmonary edema secondary to loss of barrier function. This review will address the vasculopathy of COVID-19 with a focus on the role of the endothelium in orchestrating the systemic response to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. The endothelial receptor systems and molecular pathways activated in the setting of COVID-19 and the consequences of these inflammatory and prothrombotic changes on endothelial cell function will be discussed. The sequelae of COVID-19 vascular involvement at the level of organ systems will also be addressed, with an emphasis on the pulmonary vasculature but with consideration of effects on other vascular beds. The dramatic changes in endothelial phenotypes associated with COVID-19 has enabled the identification of biomarkers that could help guide therapy and predict outcomes. Knowledge of vascular pathogenesis in COVID-19 has also informed therapeutic approaches that may control its systemic sequelae. Because our understanding of vascular response in COVID-19 continues to evolve, we will consider areas of controversy, such as the extent to which SARS-CoV-2 directly infects endothelium and the degree to which vascular responses to SARS-CoV-2 are unique or common to those of other viruses capable of causing severe respiratory disease. This conceptual framework describing how SARS-CoV-2 infection affects endothelial inflammation, prothrombotic transformation, and barrier dysfunction will provide a context for interpreting new information as it arises addressing the vascular complications of COVID-19.
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Affiliation(s)
| | | | - Alec A Schmaier
- Division of Hemostasis and Thrombosis and
- Division of Cardiovascular Medicine, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
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19
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Abstract
The diagnosis of antiphospholipid syndrome (APS) relies on the detection of circulating antiphospholipid antibodies (aPL). Currently, lupus anticoagulant (LA), anticardiolipin (aCL), and anti-β2-glycoprotein I antibodies (aβ2GPI) IgG or IgM are the laboratory criteria if persistently present over time. As aCL and aβ2GPI are two out of the three laboratory criteria, the detection of aPL by solid phase assays is an essential step in the diagnosis of APS. Advancement has been made to resolve some of the methodological challenges of aCL and aβ2GPI assays by providing guidelines how to measure aPL, as well as to gain a better understanding of their diagnostic role. However, solid phase assays for aCL and aβ2GPI still show substantive inter-assay differences, resulting in disagreement concerning positive/negative results, but also differences in titer of antibodies. This hampers the semiquantitative classification into low-medium-high positivity. The non-criteria aPL, such as antibodies against the domain one of β2GPI and anti-phosphatidylserine/prothrombin antibodies (aPS/PT) have roles in confirming the risk in APS, and can be useful, especially in patients with incomplete antibody profiles.
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Affiliation(s)
- Katrien M J Devreese
- Department of Diagnostic Sciences, Coagulation Laboratory, Ghent University Hospital, Ghent University, Ghent, Belgium
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20
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Vandevelde A, Devreese KMJ. Laboratory Diagnosis of Antiphospholipid Syndrome: Insights and Hindrances. J Clin Med 2022; 11:jcm11082164. [PMID: 35456258 PMCID: PMC9025581 DOI: 10.3390/jcm11082164] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 04/08/2022] [Indexed: 12/11/2022] Open
Abstract
Diagnosis of antiphospholipid syndrome (APS) requires the presence of a clinical criterion (thrombosis and/or pregnancy morbidity), combined with persistently circulating antiphospholipid antibodies (aPL). Currently, laboratory criteria aPL consist of lupus anticoagulant (LAC), anticardiolipin antibodies (aCL) IgG/IgM, and anti-β2 glycoprotein I antibodies (aβ2GPI) IgG/IgM. Diagnosis and risk stratification of APS are complex and efforts to standardize and optimize laboratory tests have been ongoing since the initial description of the syndrome. LAC detection is based on functional coagulation assays, while aCL and aβ2GPI are measured with immunological solid-phase assays. LAC assays are especially prone to interference by anticoagulation therapy, but strategies to circumvent this interference are promising. Alternative techniques such as thrombin generation for LAC detection and to estimate LAC pathogenicity have been suggested, but are not applicable yet in routine setting. For aCL and aβ2GPI, a lot of different assays and detection techniques such as enzyme-linked immunosorbent and chemiluminescent assays are available. Furthermore, a lack of universal calibrators or standards results in high variability between the different solid-phase assays. Other non-criteria aPL such as anti-domain I β2 glycoprotein I and antiphosphatidylserine/prothrombin antibodies have been suggested for risk stratification purposes in APS, while their added value to diagnostic criteria seems limited. In this review, we will describe laboratory assays for diagnostic and risk evaluation in APS, integrating applicable guidelines and classification criteria. Current insights and hindrances are addressed with respect to both laboratory and clinical implications.
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Affiliation(s)
- Arne Vandevelde
- Department of Diagnostic Sciences, Ghent University, 9000 Gent, Belgium;
- Coagulation Laboratory, Ghent University Hospital, 9000 Gent, Belgium
| | - Katrien M. J. Devreese
- Department of Diagnostic Sciences, Ghent University, 9000 Gent, Belgium;
- Coagulation Laboratory, Ghent University Hospital, 9000 Gent, Belgium
- Correspondence:
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21
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Killian M, van Mens TE. Risk of Thrombosis, Pregnancy Morbidity or Death in Antiphospholipid Syndrome. Front Cardiovasc Med 2022; 9:852777. [PMID: 35299976 PMCID: PMC8921454 DOI: 10.3389/fcvm.2022.852777] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 02/07/2022] [Indexed: 12/12/2022] Open
Abstract
The antiphospholipid syndrome is an autoimmune disease characterized by thrombosis and pregnancy morbidity. The manifestations are caused by antibodies targeting cell membrane phospholipids and/or associated proteins. The triggers leading to these antibodies' production are unknown but recent work suggests cross-reactivity between the autoantigens and peptides produced by the intestinal microbiome. Work on how the autoantibodies could cause clinical manifestations implicates different mechanisms. Binding to surface proteins of different cell types can induce intracellular signaling leading to cell activation and tissue factor expression. Complement activation and neutrophil extracellular-traps are also involved, and recent evidence implicates endothelial protein C receptor-lysobisphosphatidic acid complex. Pregnancy is a high-risk situation for antiphospholipid syndrome patients due to the increased risk of thrombosis and obstetric complications. Epidemiological and clinical research on APS is hampered by heterogeneity in populations, testing and treatment strategies. About one in 10 to one in fifty APS pregnancies is complicated by thrombosis, despite treatment. Pregnant patients with prior thrombosis are prescribed therapeutic dose heparins and low dose aspirin. Without prior thrombosis a prophylactic dose is used. The most frequent obstetrical manifestation is recurrent early pregnancy loss. The association of APS antibodies with late pregnancy loss is stronger, however. Prevention of recurrence is achieved with aspirin and prophylactic dose heparin, although the evidence is of low certainty. The third obstetrical classifying manifestation comprises preterm delivery due to placenta-mediated complications and is treated in subsequent pregnancies with aspirin with or without prophylactic dose heparin, again based on low quality evidence. New therapies are under investigation.
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Affiliation(s)
- Martin Killian
- CIRI - Centre International de Recherche en Infectiologie, Team GIMAP, Université de Lyon, Université Jean Monnet, Université Claude Bernard Lyon 1, Inserm, U1111, CNRS, UMR530, Saint-Étienne, France.,Internal Medicine Department, Saint-Etienne University Hospital, Saint-Étienne, France
| | - Thijs E van Mens
- Amsterdam UMC, Department of Vascular Medicine, Amsterdam Cardiovascular Sciences, Amsterdam Reproduction and Development, University of Amsterdam, Amsterdam, Netherlands
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22
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SARS- CoV-2 infection and oxidative stress in early-onset preeclampsia. Biochim Biophys Acta Mol Basis Dis 2022; 1868:166321. [PMID: 34920081 PMCID: PMC8668602 DOI: 10.1016/j.bbadis.2021.166321] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 11/23/2021] [Accepted: 12/07/2021] [Indexed: 02/06/2023]
Abstract
SARS-CoV-2 causes coronavirus disease 2019 (COVID-19) also in pregnant women. Infection in pregnancy leads to maternal and placental functional alterations. Pregnant women with vascular defects such as preeclampsia show high susceptibility to SARS-CoV-2 infection by undefined mechanisms. Pregnant women infected with SARS-CoV-2 show higher rates of preterm birth and caesarean delivery, and their placentas show signs of vasculopathy and inflammation. It is still unclear whether the foetus is affected by the maternal infection with this virus and whether maternal infection associates with postnatal affections. The SARS-CoV-2 infection causes oxidative stress and activation of the immune system leading to cytokine storm and next tissue damage as seen in the lung. The angiotensin-converting-enzyme 2 expression is determinant for these alterations in the lung. Since this enzyme is expressed in the human placenta, SARS-CoV-2 could infect the placenta tissue, although reported to be of low frequency compared with maternal lung tissue. Early-onset preeclampsia (eoPE) shows higher expression of ADAM17 (a disintegrin and metalloproteinase 17) causing an imbalanced renin-angiotensin system and endothelial dysfunction. A similar mechanism seems to potentially account for SARS-CoV-2 infection. This review highlights the potentially common characteristics of pregnant women with eoPE with those with COVID-19. A better understanding of the mechanisms of SARS-CoV-2 infection and its impact on the placenta function is determinant since eoPE/COVID-19 association may result in maternal metabolic alterations that might lead to a potential worsening of the foetal programming of diseases in the neonate, young, and adult.
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Woo S, Kim B, Heo NH, Kim MS, Yoon YA, Choi YJ. Association of Lupus Anticoagulant status with Disease Course in SARS-CoV-2 (COVID-19) Infection. Clin Appl Thromb Hemost 2022; 28:10760296221127276. [PMID: 36172745 PMCID: PMC9523836 DOI: 10.1177/10760296221127276] [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] [Indexed: 11/30/2022] Open
Abstract
Background: We investigated the importance of lupus anticoagulant (LA) in patients with SARS-CoV-2. Methods: Medical records of 41 SARS-CoV-2 infected patients were reviewed. Patients were classified into two groups according to the frequency of positive LA test results: “LA (−)” and “LA (+) ≥1” (LA positive at least once). Statistical analysis was performed to determine the association between LA presence and change in LA test results and disease course according to both hospital days (HD) and days after diagnosis (DD). Results: The prevalence of LA was 51.2%. Averagely, the first change in LA test result occurred during DD 12-13 and between HD 9-10. The second change occurred on DD 15-16 and HD 13-14. The presence of LA was associated with severe disease (P = .004) but was not associated with thrombotic complications or mortality. The change of results from negative to positive or vice versa or the frequency of the changes was not associated with disease severity, thrombotic complications, or mortality. Conclusions: LA positivity can be regarded as one of the findings suggesting more serious SARS-CoV-2 infection.
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Affiliation(s)
- Suhyeon Woo
- Department of Laboratory Medicine, 65371Soonchunhyang University Cheonan Hospital, Soonchunhyang University College of Medicine, Cheonan, Korea
| | - Bohyun Kim
- Department of Laboratory Medicine, 65371Soonchunhyang University Cheonan Hospital, Soonchunhyang University College of Medicine, Cheonan, Korea
| | - Nam Hun Heo
- Clinical Trial Center, Soonchunhyang University Cheonan Hospital, Soonchunhyang University College of Medicine, Cheonan, Korea
| | - Min-Sun Kim
- Department of Laboratory Medicine, 65371Soonchunhyang University Cheonan Hospital, Soonchunhyang University College of Medicine, Cheonan, Korea
| | - Young Ahn Yoon
- Department of Laboratory Medicine, 65371Soonchunhyang University Cheonan Hospital, Soonchunhyang University College of Medicine, Cheonan, Korea
| | - Young-Jin Choi
- Department of Laboratory Medicine, 65371Soonchunhyang University Cheonan Hospital, Soonchunhyang University College of Medicine, Cheonan, Korea
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Root‐Bernstein R. COVID-19 coagulopathies: Human blood proteins mimic SARS-CoV-2 virus, vaccine proteins and bacterial co-infections inducing autoimmunity: Combinations of bacteria and SARS-CoV-2 synergize to induce autoantibodies targeting cardiolipin, cardiolipin-binding proteins, platelet factor 4, prothrombin, and coagulation factors. Bioessays 2021; 43:e2100158. [PMID: 34677872 PMCID: PMC8646673 DOI: 10.1002/bies.202100158] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 09/28/2021] [Accepted: 09/30/2021] [Indexed: 12/15/2022]
Abstract
Severe COVID-19 is often accompanied by coagulopathies such as thrombocytopenia and abnormal clotting. Rarely, such complications follow SARS-CoV-2 vaccination. The cause of these coagulopathies is unknown. It is hypothesized that coagulopathies accompanying SARS-CoV-2 infections and vaccinations result from bacterial co-infections that synergize with virus-induced autoimmunity due to antigenic mimicry of blood proteins by both bacterial and viral antigens. Coagulopathies occur mainly in severe COVID-19 characterized by bacterial co-infections with Streptococci, Staphylococci, Klebsiella, Escherichia coli, and Acinetobacter baumannii. These bacteria express unusually large numbers of antigens mimicking human blood antigens, as do both SARS-CoV-2 and adenoviruses. Bacteria mimic cardiolipin, prothrombin, albumin, and platelet factor 4 (PF4). SARS-CoV-2 mimics complement factors, Rh antigens, platelet phosphodiesterases, Factors IX and X, von Willebrand Factor (VWF), and VWF protease ADAMTS13. Adenoviruses mimic prothrombin and platelet factor 4. Bacterial prophylaxis, avoidance of vaccinating bacterially infected individuals, and antigen deletion for vaccines may reduce coagulopathy risk. Also see the video abstract here: https://youtu.be/zWDOsghrPg8.
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Vrachatis DA, Papathanasiou KA, Giotaki SG, Raisakis K, Kossyvakis C, Kaoukis A, Kolokathis F, Deftereos G, Iliodromitis KE, Avramides D, Bogossian H, Siasos G, Giannopoulos G, Reimers B, Lansky A, Tardif JC, Deftereos S. Immunologic Dysregulation and Hypercoagulability as a Pathophysiologic Background in COVID-19 Infection and the Immunomodulating Role of Colchicine. J Clin Med 2021; 10:5128. [PMID: 34768648 PMCID: PMC8584586 DOI: 10.3390/jcm10215128] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 10/20/2021] [Accepted: 10/29/2021] [Indexed: 12/20/2022] Open
Abstract
In 2020, SARS-COV-2 put health systems under unprecedented resource and manpower pressure leading to significant number of deaths. Expectedly, researchers sought to shed light on the pathophysiologic background of this novel disease (COVID-19) as well as to facilitate the design of effective therapeutic modalities. Indeed, early enough the pivotal role of inflammatory and thrombotic pathways in SARS-COV-2 infection has been illustrated. The purpose of this article is to briefly present the epidemiologic and clinical features of COVID-19, analyze the pathophysiologic importance of immunologic dysregulation and hypercoagulability in developing disease complications and finally to present an up-to-date systematic review of colchicine's immunomodulating capacity in view of hindering coronavirus complications.
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Affiliation(s)
- Dimitrios A. Vrachatis
- Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece; (D.A.V.); (K.A.P.); (S.G.G.); (F.K.); (G.S.)
| | - Konstantinos A. Papathanasiou
- Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece; (D.A.V.); (K.A.P.); (S.G.G.); (F.K.); (G.S.)
| | - Sotiria G. Giotaki
- Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece; (D.A.V.); (K.A.P.); (S.G.G.); (F.K.); (G.S.)
| | - Konstantinos Raisakis
- Department of Cardiology, “G. Gennimatas” General Hospital of Athens, 11527 Athens, Greece; (K.R.); (C.K.); (A.K.); (G.D.); (D.A.)
| | - Charalampos Kossyvakis
- Department of Cardiology, “G. Gennimatas” General Hospital of Athens, 11527 Athens, Greece; (K.R.); (C.K.); (A.K.); (G.D.); (D.A.)
| | - Andreas Kaoukis
- Department of Cardiology, “G. Gennimatas” General Hospital of Athens, 11527 Athens, Greece; (K.R.); (C.K.); (A.K.); (G.D.); (D.A.)
| | - Fotis Kolokathis
- Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece; (D.A.V.); (K.A.P.); (S.G.G.); (F.K.); (G.S.)
| | - Gerasimos Deftereos
- Department of Cardiology, “G. Gennimatas” General Hospital of Athens, 11527 Athens, Greece; (K.R.); (C.K.); (A.K.); (G.D.); (D.A.)
| | - Konstantinos E. Iliodromitis
- Evangelisches Krankenhaus Hagen-Haspe, Clinic for Cardiology and Electrophysiology, 58135 Hagen, Germany; (K.E.I.); (H.B.)
- Department of Cardiology, University of Witten/Herdecke, 58455 Witten, Germany
| | - Dimitrios Avramides
- Department of Cardiology, “G. Gennimatas” General Hospital of Athens, 11527 Athens, Greece; (K.R.); (C.K.); (A.K.); (G.D.); (D.A.)
| | - Harilaos Bogossian
- Evangelisches Krankenhaus Hagen-Haspe, Clinic for Cardiology and Electrophysiology, 58135 Hagen, Germany; (K.E.I.); (H.B.)
- Department of Cardiology, University of Witten/Herdecke, 58455 Witten, Germany
| | - Gerasimos Siasos
- Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece; (D.A.V.); (K.A.P.); (S.G.G.); (F.K.); (G.S.)
| | - George Giannopoulos
- Medical School, Artistotle University of Thessaloniki, 54124 Thessaloniki, Greece;
| | | | - Alexandra Lansky
- Section of Cardiovascular Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, CT 06510, USA;
| | - Jean-Claude Tardif
- Montreal Heart Institute, Université de Montréal, Montreal, QC H1T 1C8, Canada;
| | - Spyridon Deftereos
- Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece; (D.A.V.); (K.A.P.); (S.G.G.); (F.K.); (G.S.)
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Emeršič N, Tomaževič T, Točkova O, Kopač M, Volavšek M, Ključevšek D, Avčin T. Case Report: Necrotizing Stomatitis as a Manifestation of COVID-19-Associated Vasculopathy. Front Pediatr 2021; 9:800576. [PMID: 34966708 PMCID: PMC8710718 DOI: 10.3389/fped.2021.800576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Accepted: 11/11/2021] [Indexed: 11/13/2022] Open
Abstract
Necrotizing stomatitis is a rare, acute-onset disease that is usually associated with severely malnourished children or diminished systemic resistance. We describe a 1-year-old girl who developed necrotizing stomatitis, vasculitic rash, skin desquamation on the fingers and toes, and persistent hypertension after serologically confirmed SARS-CoV-2 infection. Her laboratory investigations revealed positive IgG anticardiolipin and IgG anti-β2 glycoprotein antibodies, and biopsy of the mucosa of the lower jaw showed necrosis and endothelial damage with mural thrombi. Swollen endothelial cells of small veins in the upper dermis were confirmed also by electron microscopy. As illustrated by our case, necrotizing stomatitis may develop as a rare complication associated with SARS-CoV-2 infection and can be considered as a part of the clinical spectrum of COVID-19 vasculopathy. The pathogenic mechanism could involve a consequence of inflammatory events with vasculopathy, hypercoagulability, and damage of endothelial cells as a response to SARS-CoV-2 infection.
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Affiliation(s)
- Nina Emeršič
- Department of Allergology, Rheumatology and Clinical Immunology, Children's Hospital, University Medical Center Ljubljana, Ljubljana, Slovenia
| | - Tanja Tomaževič
- Department of Pediatric and Preventive Dentistry, Dental Clinic, University Medical Center Ljubljana, Ljubljana, Slovenia
| | - Olga Točkova
- Department of Dermatovenereology, University Medical Center Ljubljana, Ljubljana, Slovenia
| | - Matjaž Kopač
- Department of Nephrology, Children's Hospital, University Medical Center Ljubljana, Ljubljana, Slovenia
| | - Metka Volavšek
- Faculty of Medicine, Institute of Pathology, University of Ljubljana, Ljubljana, Slovenia
| | - Damjana Ključevšek
- Radiology Unit, Children's Hospital, University Medical Center Ljubljana, Ljubljana, Slovenia
| | - Tadej Avčin
- Department of Allergology, Rheumatology and Clinical Immunology, Children's Hospital, University Medical Center Ljubljana, Ljubljana, Slovenia.,Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
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