Adequate serum 25-hydroxy-vitamin D levels are correlated with low anti-PF4 levels in mild COVID-19 Patients: An observational study
MD Andhika Rachman, MD, PhD Anggraini Iriani, MD Attaufiq Irawan, MD c , Samuel Juanputra, MD Rachelle Betsy
Medicine, doi:10.1097/md.0000000000039252
The worldwide spread of coronavirus disease 2019 (COVID-19) has resulted in an unparalleled health emergency of global proportions. Around 31% of individuals with COVID-19 experience thrombosis associated with hypercoagulation. COVID-19 patients have shown an increase in platelet activation, but the mechanism has not been fully understood yet. One theory suggests that this could be related to the heparin-induced thrombocytopenia phenomenon, where platelet activation involves anti-PF4 antibodies that are associated with thrombosis. Vitamin D has been established to exert an influence on immunological responses and inflammation. The aim of this study is to analyze the correlation between serum 25-hydroxy-cholecalciferol [25(OH)D] levels and anti-PF4 antibodies among COVID-19 patients. A cross-sectional study was conducted among 160 COVID-19 patients at Cipto Mangunkusumo General Hospital and Wisma Atlit Hospital Jakarta from October 2021 to January 2022. The mean serum 25(OH)D level was 15.1 ng/mL. A significant negative correlation was found between serum 25(OH)D and anti-PF4 levels in mild COVID-19 patients (P = .035; R = -0.236). Remarkably, P-selectin levels were significantly higher in the moderate COVID-19 group compared to the severe group (P = .031). Serum 25(OH)D level had a significant negative correlation with anti-PF4 level in mild COVID-19 patients. Thus, it is highly recommended to ensure that serum 25(OH)D levels are maintained above 30 ng/mL. Remarkably, the P-selectin level was significantly higher in the moderate COVID-19 group compared to the severe group. Abbreviations: 25 (OH)D = 25-hydroxy-cholecalciferol, anti-PF4 = antibodies targeting platelet-factor 4, BMI = body mass index, CAD = coronary artery disease, CHF = congestive heart failure, CKD = chronic kidney disease, COPD = chronic obstructive pulmonary disease, COVID-19 = Coronavirus disease 2019, CVD = cerebrovascular disease, DIC = disseminated intravascular coagulation, DVT = deep vein thrombosis, ELISA = enzyme-linked immunosorbent assay, HIT = heparin-induced thrombocytopenia, HIV = human immunodeficiency virus, IFN-y = gamma interferon, PE = pulmonary embolism, RNA = ribonucleic acid, SIC = sepsis-induced coagulopathy, T2DM = type 2 diabetes mellitus, TF = tissue factor, TM = thrombomodulin, TNFα = tumor necrosis factor-alpha, VITT = vaccine-induced thrombotic thrombocytopenia, WHO = World Health Organization.
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'abstract': '<jats:p>The worldwide spread of coronavirus disease 2019 (COVID-19) has resulted in an '
'unparalleled health emergency of global proportions. Around 31% of individuals with COVID-19 '
'experience thrombosis associated with hypercoagulation. COVID-19 patients have shown an '
'increase in platelet activation, but the mechanism has not been fully understood yet. One '
'theory suggests that this could be related to the heparin-induced thrombocytopenia '
'phenomenon, where platelet activation involves anti-PF4 antibodies that are associated with '
'thrombosis. Vitamin D has been established to exert an influence on immunological responses '
'and inflammation. The aim of this study is to analyze the correlation between serum '
'25-hydroxy-cholecalciferol [25(OH)D] levels and anti-PF4 antibodies among COVID-19 patients. '
'A cross-sectional study was conducted among 160 COVID-19 patients at Cipto Mangunkusumo '
'General Hospital and Wisma Atlit Hospital Jakarta from October 2021 to January 2022. The mean '
'serum 25(OH)D level was 15.1\u2009ng/mL. A significant negative correlation was found between '
'serum 25(OH)D and anti-PF4 levels in mild COVID-19 patients (<jats:italic '
'toggle="yes">P</jats:italic>\u2005=\u2005.035; <jats:italic toggle="yes">R</jats:italic>\u2005'
'=\u2005−0.236). Remarkably, P-selectin levels were significantly higher in the moderate '
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'=\u2005.031). Serum 25(OH)D level had a significant negative correlation with anti-PF4 level '
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