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Current Perspectives of convalescent plasma therapy in COVID-19.

ABSTRACT: The outbreak of the coronavirus disease 2019 (COVID-19) has posed an unprecedented challenge to the health care communities across the globe. As of June 2, 2020, a total of 6,418,968 confirmed COVID-19 cases with 378,954 deaths have been reported. Different regions of the world have reported varying intensity of COVID-19 severity. The disease burden for COVID-19 depends on multiple factors like the local infection rate, susceptible population, mortality rate, and so on. The COVID-19 pandemic is a rapidly evolving emergency and is a subject of regular debate and advanced research. As of today, there is a lack of definitive treatment options for COVID-19 pneumonia. In search of alternative options, few drugs are being tested for their efficacy and repurposing. Preliminary reports have shown positive outcomes with Remdesivir and tocilizumab, but this needs further confirmation. Recently, the therapeutic application of Convalescent Plasma therapy in critically ill patients suffering from COVID-19 has gained momentum. We hereby discuss the convalescent plasma as a potential therapeutic option, its challenges of finding the ideal donors, transfusion medicine responsibilities, and the current global experience with its use.

SUBMITTER: Sahu KK

PROVIDER: S-EPMC7927533 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Convalescent plasma transfusion a promising therapy for coronavirus diseases 2019 (COVID-19): current updates.

Project description:While there is no proven treatment available for coronavirus disease 2019 (COVID-19), convalescent plasma (CP) may provide therapeutic relief as the number of cases escalate steeply world-wide. At the time of writing this review, vaccines, monoclonal antibodies or drugs are still lacking for the recent large COVID-19 outbreak, which restores the interest in CP as an empirical life-saving treatment. However, formal proof of efficacy is needed. The purpose of this review is to summarize all historical clinical trials on COVID-19 infected patients treated with CP to provide precise evidence for the efficacy and effectiveness of CP therapy in severe COVID-19 patients. Although there are many clinical trials in progress, high-quality clinical evidence is still lacking to analyze the existing problems. Meanwhile, based on the previous successful outcomes, we recommend healthcare systems to use CP therapy cautiously in critically ill COVID-19 patients.

| S-EPMC7314270 | biostudies-literature

COVID-19 convalescent plasma therapy: hit fast, hit hard!

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| S-EPMC8251446 | biostudies-literature

COVID-19 convalescent plasma; time for "goal directed therapy"?

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| S-EPMC8250757 | biostudies-literature

Effectiveness of convalescent plasma therapy in severe COVID-19 patients.

Project description:Currently, there are no approved specific antiviral agents for novel coronavirus disease 2019 (COVID-19). In this study, 10 severe patients confirmed by real-time viral RNA test were enrolled prospectively. One dose of 200 mL of convalescent plasma (CP) derived from recently recovered donors with the neutralizing antibody titers above 1:640 was transfused to the patients as an addition to maximal supportive care and antiviral agents. The primary endpoint was the safety of CP transfusion. The second endpoints were the improvement of clinical symptoms and laboratory parameters within 3 d after CP transfusion. The median time from onset of illness to CP transfusion was 16.5 d. After CP transfusion, the level of neutralizing antibody increased rapidly up to 1:640 in five cases, while that of the other four cases maintained at a high level (1:640). The clinical symptoms were significantly improved along with increase of oxyhemoglobin saturation within 3 d. Several parameters tended to improve as compared to pretransfusion, including increased lymphocyte counts (0.65 × 109/L vs. 0.76 × 109/L) and decreased C-reactive protein (55.98 mg/L vs. 18.13 mg/L). Radiological examinations showed varying degrees of absorption of lung lesions within 7 d. The viral load was undetectable after transfusion in seven patients who had previous viremia. No severe adverse effects were observed. This study showed CP therapy was well tolerated and could potentially improve the clinical outcomes through neutralizing viremia in severe COVID-19 cases. The optimal dose and time point, as well as the clinical benefit of CP therapy, needs further investigation in larger well-controlled trials.

| S-EPMC7196837 | biostudies-literature

Convalescent Plasma Therapy for COVID-19: State of the Art.

Project description:Convalescent plasma (CP) therapy has been used since the early 1900s to treat emerging infectious diseases; its efficacy was later associated with the evidence that polyclonal neutralizing antibodies can reduce the duration of viremia. Recent large outbreaks of viral diseases for which effective antivirals or vaccines are still lacking has renewed the interest in CP as a life-saving treatment. The ongoing COVID-19 pandemic has led to the scaling up of CP therapy to unprecedented levels. Compared with historical usage, pathogen reduction technologies have now added an extra layer of safety to the use of CP, and new manufacturing approaches are being explored. This review summarizes historical settings of application, with a focus on betacoronaviruses, and surveys current approaches for donor selection and CP collection, pooling technologies, pathogen inactivation systems, and banking of CP. We additionally list the ongoing registered clinical trials for CP throughout the world and discuss the trial results published thus far.

| S-EPMC7430293 | biostudies-literature

Interferon-α2 Auto-antibodies in Convalescent Plasma Therapy for COVID-19

Project description:Purpose To study the effect of interferon-α2 auto-antibodies (IFN-α2 Abs) on clinical and virological outcomes in critically ill COVID-19 patients and the risk of IFN-α2 Abs transfer during convalescent plasma treatment. Methods Sera from healthy controls, cases of COVID-19, and other respiratory illness were tested for IFN-α2 Abs by ELISA and a pseudo virus–based neutralization assay. The effects of disease severity, sex, and age on the risk of having neutralizing IFN-α2 Abs were determined. Longitudinal analyses were performed to determine association between IFN-α2 Abs and survival and viral load and whether serum IFN-α2 Abs appeared after convalescent plasma transfusion. Results IFN-α2 neutralizing sera were found only in COVID-19 patients, with proportions increasing with disease severity and age. In the acute stage of COVID-19, all sera from patients with ELISA-detected IFN-α2 Abs (13/164, 7.9%) neutralized levels of IFN-α2 exceeding physiological concentrations found in human plasma and this was associated with delayed viral clearance. Convalescent plasma donors that were anti-IFN-α2 ELISA positive (3/118, 2.5%) did not neutralize the same levels of IFN-α2. Neutralizing serum IFN-α2 Abs were associated with delayed viral clearance from the respiratory tract. Conclusions IFN-α2 Abs were detected by ELISA and neutralization assay in COVID-19 patients, but not in ICU patients with other respiratory illnesses. The presence of neutralizing IFN-α2 Abs in critically ill COVID-19 is associated with delayed viral clearance. IFN-α2 Abs in COVID-19 convalescent plasma donors were not neutralizing in the conditions tested. Supplementary Information The online version contains supplementary material available at 10.1007/s10875-021-01168-3.

| S-EPMC8586830 | biostudies-literature

Emergence of ancient convalescent plasma (CP) therapy: To manage COVID-19 pandemic.

Project description:Since December 2019, the human populations of the 195 global countries continue experiencing grave health and life threats due to the current COVID-19 pandemic. As a result of the novelty of the pathogen, the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), at present there is lack of preventive as well as therapeutic options for treating and managing the infection. The use of ancient immunotherapeutic technique - the convalescent plasma (CP) therapy, may act as an immediate and available option to control the COVID-19 pandemic. This review provides a concept and understanding on the CP therapy, its potential to control SARS-CoV-2 pandemic. The CP therapy might act as an immediate saviour for society from the virus. Although the CP therapy has exert affirmative result against COVID-19 it has not been recommended for long time use in COVID-19 and this review gives support for its possible application.

| S-EPMC7718590 | biostudies-literature

COVID-19 Pandemic and the Convalescent Plasma Therapy: Possible Benefits and Risks.

Project description:Purpose of reviewCOVID-19 pandemic has been the major threat to the global public health for a year (last of 2019-till date); and unfortunately, there is still as no specific antiviral agent which can be effectively used against this disease curation. Present review focused on the application of the convalescent plasma (CP) therapy as a quick remediation of the disease severity.Recent findingsWhile several drugs have been repurposed based on a number of completed clinical trials together with a huge ongoing effort to develop appropriate vaccine against the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), the therapeutic approach of the CP therapy appears to be one of the effective methods to rescue the severely affected COVID-19 patients. Such a therapy based on passive immunity evolved from the SARS-CoV-2-infected patients who have fully recovered from COVID-19; and hence these individuals are quite likely to possess high titers of the SARS-CoV-2-neutralizing immunoglobulins (antibodies). However, there are some risks such therapy, and its effectivity also appeared doubtful in some cases. Thus, the current review discussed the issues raised by the administration of such plasma into the SARS-CoV-2-infected individuals.SummaryApplication of CP therapy has been conducted since long time; and for the mitigation of COVID-19 severity, such pharmaceutical strategy is also being employed in spite of several risks which actually can be monitored as well as optimized in order to combat the SARS-CoV-2 infection.

| S-EPMC8254626 | biostudies-literature

Use of convalescent plasma therapy in eight individuals with mild COVID-19.

Project description:Coronavirus disease 2019 (COVID-19) is still a global epidemic. Several studies of individuals with severe COVID-19 regard convalescent plasma (CP) transfusion as an effective therapy. However, no significant improvements are found in randomized clinical trials of CP treatment. Until now, data for individuals with mild COVID-19 transfused CP were lacking. This study recruited eight individuals with mild COVID-19 who received at least one dose of CP transfusion. After CP therapy, the clinical symptoms of all individuals improved. Lymphocyte counts tended to increase, and lactate dehydrogenase, creatine kinase and aspartate aminotransferase tended to decrease. However, C-reactive protein increased transiently in three individuals. The median time for the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) nucleic acid test to become negative was 2.5 days after CP transfusion. The study shows the potential benefits of CP. Meanwhile, CP probably enhances the inflammatory response to SARS-CoV-2 temporarily in people with insufficient antiviral immunity. However, the effects of CP are not permanent.

| S-EPMC7661912 | biostudies-literature

Convalescent plasma therapy in obese severe COVID-19 adolescents: Two cases report.

Project description:BackgroundIn Indonesia, 175 cases resulted in death in children from March to December 2020. Studies regarding Convalescent Plasma Therapy's (CPT) safety and efficacy in children are scarce. Our case report was the first to write CPT in Indonesian children.Case presentationIn our case, two obese children with progressive shortness of breath, worsening cough, and high fever, the findings met severe COVID-19 criteria. We performed CPT for these patients and the patient's condition was improved and able to be discharged.DiscussionSevere COVID-19 with or without comorbid was the indication of CPT which had been approved by the U.S. FDA and Indonesian Pediatrics Society. The key factors associated with CPT efficacy were the donor's titer antibody, the treatment time point, and the patient's comorbidities. The clinical impact showed an improvement by the combination therapy of CPT and remdesivir.ConclusionWe noted that CPT might be well tolerated, could improve the clinical impact of severe COVID-19 in adolescents, and have no adverse events as well. CPT for severe COVID-19 cases in children had the potential to be developed in studies with better designs and stronger levels of evidence.

| S-EPMC8598255 | biostudies-literature

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