scholarly journals Comparing Humoral and Cellular Adaptive Immunity during Convalescent Phase of COVID-19 in Hemodialysis Patients and Kidney Transplant Recipients

2021 ◽  
Vol 10 (21) ◽  
pp. 4833
Author(s):  
Dorota Kamińska ◽  
Hanna Augustyniak-Bartosik ◽  
Katarzyna Kościelska-Kasprzak ◽  
Marcelina Żabińska ◽  
Dorota Bartoszek ◽  
...  
Keyword(s):  
Immune Response ◽  
T Cell ◽  
Kidney Transplant ◽  
Adaptive Immunity ◽  
Cell Response ◽  
Cellular Response ◽  
T Cell Response ◽  
Interferon Gamma Release Assay ◽  
Transplant Recipients ◽  
Kidney Transplant Recipients

Background. It is still unclear whether COVID-19 convalescent kidney transplant recipients (KTR) and hemodialysis (HD) patients can develop anti-SARS-CoV-2 adaptive immunity. The aim was to characterize and compare the immune response to the virus in HD patients and KTR. Methods. The study included 26 HD patients and 54 KTR—both convalescent (14 HD, 25 KTR) and unexposed. The immune response was assessed by determining the anti-SARS-CoV-2 antibodies in serum and specific T cell response via the interferon-gamma release assay (IGRA). Moreover, blood-morphology-derived parameters, immune cell phenotypes, and acute phase reactants were evaluated. Results. KRT and HD convalescents presented similar serum levels of anti-SARS-CoV-2 IgG and IgA. A negative correlation occurred between IgG and time after the infection was observed. There was a strong relationship between the prevalence of anti-SARS-CoV-2 cellular and humoral responses in both groups. Convalescent IGRA response was significantly higher in HD patients compared to KTR. Conclusions. HD patients and KTR develop humoral and cellular responses after COVID-19. The antibodies levels are similar in both groups of patients. SARS-CoV-2-reactive T cell response is stronger in HD patients compared to KTR. The SARS-CoV-2-specific IgG level decreases with time while IgA and a cellular response are maintained. IGRA proved to be a valuable test for the assessment of specific cellular immunity in immunocompromised HD patients and KTR.

scholarly journals Antibody and T Cell Response to SARS-CoV-2 Messenger RNA BNT162b2 Vaccine in Kidney Transplant Recipients and Hemodialysis Patients

2021 ◽  
pp. ASN.2021040480
Author(s):  
Dominique Bertrand ◽  
Mouad Hamzaoui ◽  
Veronique Lemée ◽  
Julie Lamulle ◽  
Melanie Hanoy ◽  
...  
Keyword(s):  
T Cells ◽  
T Cell ◽  
Kidney Transplant ◽  
Cell Response ◽  
Cellular Response ◽  
Hemodialysis Patients ◽  
T Cell Response ◽  
High Rate ◽  
Transplant Recipients ◽  
Kidney Transplant Recipients

Background. Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is associated with a high rate of mortality in patients with end stage renal disease and vaccination is hoped to prevent infection. Methods. Between January 18, and February 24, 2021, 225 kidney transplant recipients (KTR) and 45 hemodialysis patients (HDP) received two injections of mRNA BNT162b2 vaccine. The post-vaccinal humoral and cellular response was explored in the first 45 KTR and 10 HDP. Results. After the second dose, 8 HDP (88.9%) and 8 KTR (17.8%) developed anti-spike SARS-CoV-2 antibodies (p<0.0001). Median titer of antibodies in responders was 1052 AU/mL (IQR: 515-2689) in HDP and 671 AU/mL (IQR: 172-1523) in KTR (p=0.4). Nine HDP (100%) and 26 KTR (57.8%) showed a specific T cell response (p=0.06) after the second injection. In responders, median numbers of spike-reactive T cells were 305 SFC/106 CD3+ T cells (IQR: 95-947) in HDP and 212 SFC/106 CD3+ T cells (IQR: 61-330) in KTR (p=0.4). In KTR, the immune response to BNT162b2 seemed influenced by the immunosuppressive regimen, particularly tacrolimus or belatacept. Conclusion. Immunization with BNT162b2 seems more efficient in HDP, indicating that vaccination should be highly recommended in these patients awaiting a transplant. However, the current vaccinal strategy for KTR may not provide effective protection against COVID-19 and will likely need to be improved.

scholarly journals Antibody and T cell response to a third dose of SARS-CoV-2 messenger RNA BNT162b2 vaccine in kidney transplant recipients.

2021 ◽  
Author(s):  
Dominique Bertrand ◽  
Mouad Hamzaoui ◽  
Veronique Lemée ◽  
Julie Lamulle ◽  
Charlotte Laurent ◽  
...  
Keyword(s):  
T Cell ◽  
Kidney Transplant ◽  
Cell Response ◽  
Messenger Rna ◽  
T Cell Response ◽  
Transplant Recipients ◽  
Kidney Transplant Recipients

Complementary Presence of HBV-Specific Humoral and T-Cellular Immune Response Provide the Long-Lasting Immune Protection After Neonatal Immunization

2021 ◽  
Author(s):  
Yunmei Huang ◽  
Yuting Yang ◽  
Tingting Wu ◽  
Zhiyu Li ◽  
Yao Zhao
Keyword(s):  
Immune Response ◽  
T Cell ◽  
Hepatitis B ◽  
Cell Response ◽  
Cellular Immune Response ◽  
Cellular Response ◽  
T Cell Response ◽  
Hbv Infection ◽  
Hepatitis B Vaccination ◽  
Cellular Immune

Abstract Background: Hepatitis B vaccination is the most cost-effective way to prevent HBV infection. Currently, hepatitis B vaccine (HepB) efficacy was usually assessed by anti-HBs level, but there were little comprehensive analyses of humoral and cellular immune response to HepB in children after neonatal immunization. Methods: A total of 145 children with primary hepatitis B immunization history were involved in this study to evaluate the efficacy of HepB. Blood samples were obtained from 80 eligible children before one dose of HepB booster and 41 children post-booster. Children with anti-HBs at a low level (<10mIU/mL and [10,100) mIU/mL) were received one dose of HepB booster after informed consent. Subjects were be measured anti-HBs, HBsAg-specific T cell responses and frequency of B cell subsets before and after booster. Results: Among 80 subjects, 81.36% of children showed both T cell and anti-HBs responses positive at baseline. After one dose of booster, anti-HBs titer (P<0.0001), positive rate of HBsAg-specific T cell response (P=0.0036) and magnitude of SFCs (P=0.0003) increased significantly. Comparing preexisting anti-HBs titer <10mIU/mL with anti-HBs titer [10,100) mIU/mL, anti-HBs response (P=0.0005) and HBsAg-specific T lymphocyte response (P<0.0001) increased significantly. The change tendency of HBV specific humoral response is complementary to T cellular response with age. Conclusion: Protection from primary HBV immunization persists long on account of the complementary presence of HBV-specific humoral and T-cellular immune response. One dose of HepB booster is efficient enough to produce protective anti-HBs and enhance HBsAg-specific T cell response. In the HBV endemic areas, HepB booster immunization is still the most economical and effective way to prevent HBV infection, especially in children without anti-HBs.

scholarly journals Six-Month Follow-Up after Vaccination with BNT162b2: SARS-CoV-2 Antigen-Specific Cellular and Humoral Immune Responses in Hemodialysis Patients and Kidney Transplant Recipients

Pathogens ◽  
2022 ◽  
Vol 11 (1) ◽  
pp. 67
Author(s):  
Simone Cosima Boedecker-Lips ◽  
Anja Lautem ◽  
Stefan Runkel ◽  
Pascal Klimpke ◽  
Daniel Kraus ◽  
...  
Keyword(s):  
Immune Responses ◽  
Kidney Transplant ◽  
Cell Response ◽  
Cellular Response ◽  
Chronically Ill ◽  
Response Rates ◽  
Hemodialysis Patients ◽  
Transplant Recipients ◽  
Kidney Transplant Recipients ◽  
Antibody Titers

Hemodialysis patients (HDP) and kidney transplant recipients (KTR) have a high risk of infection with SARS-CoV-2 with poor clinical outcomes. Because of this, vaccination of these groups of patients against SARS-CoV-2 is particularly important. However, immune responses may be impaired in immunosuppressed and chronically ill patients. Here, our aim was to compare the efficacy of an mRNA-based vaccine in HDP, KTR, and healthy subjects. Design: In this prospective observational cohort study, the humoral and cellular response of prevalent 192 HDP, 50 KTR, and 28 healthy controls (HC) was assessed 1, 2, and 6 months after the first immunization with the BNT162b2 mRNA vaccine. Results: After 6 months, 97.5% of HDP, 37.9% of KTR, and 100% of HC had an antibody response. Median antibody levels were 1539.7 (±3355.8), 178.5 (±369.5), and 2657.8 (±2965.8) AU/mL in HDP, KTR, and HC, respectively (p ≤ 0.05). A SARS-CoV-2 antigen-specific cell response to vaccination was found in 68.8% of HDP, 64.5% of KTR, and 90% of HC. Conclusion: The humoral response rates to mRNA-based vaccination of HDPs are comparable to HCs, but antibody titers are lower. Furthermore, HDPs have weaker T-cell response to vaccination than HCs. KTRs have very low humoral and antigen-specific cellular response rates and antibody titers, which requires other vaccination strategies in addition to booster vaccination.

scholarly journals Poor humoral and T-cell response to two-dose SARS-CoV-2 messenger RNA vaccine BNT162b2 in cardiothoracic transplant recipients

2021 ◽  
Author(s):  
René Schramm ◽  
Angelika Costard-Jäckle ◽  
Rasmus Rivinius ◽  
Bastian Fischer ◽  
Benjamin Müller ◽  
...  
Keyword(s):  
T Cell ◽  
Cell Response ◽  
Messenger Rna ◽  
Neutralizing Antibodies ◽  
Cellular Response ◽  
T Cell Response ◽  
Control Group ◽  
Immunocompromised Patients ◽  
Transplant Recipients ◽  
Transplant Patients

Abstract Aims Immunocompromised patients have been excluded from studies of SARS-CoV-2 messenger RNA vaccines. The immune response to vaccines against other infectious agents has been shown to be blunted in such patients. We aimed to analyse the humoral and cellular response to prime-boost vaccination with the BNT162b2 vaccine (Pfizer-BioNTech) in cardiothoracic transplant recipients. Methods and results A total of 50 transplant patients [1–3 years post heart (42), lung (7), or heart–lung (1) transplant, mean age 55 ± 10 years] and a control group of 50 healthy staff members were included. Blood samples were analysed 21 days after the prime and the boosting dose, respectively, to quantify anti-SARS-CoV-2 spike protein (S) immunoglobulin titres (tested by Abbott, Euroimmun and RocheElecsys Immunoassays, each) and the functional inhibitory capacity of neutralizing antibodies (Genscript). To test for a specific T-cell response, heparinized whole blood was stimulated with SARS-CoV-2 specific peptides, covering domains of the viral spike, nucleocapsid and membrane protein, and the interferon-γ release was measured (QuantiFERON Monitor ELISA, Qiagen). The vast majority of transplant patients (90%) showed neither a detectable humoral nor a T-cell response three weeks after the completed two-dose BNT162b2 vaccination; these results are in sharp contrast to the robust immunogenicity seen in the control group: 98% exhibited seroconversion after the prime dose already, with a further significant increase of IgG titres after the booster dose (average > tenfold increase), a more than 90% inhibition capability of neutralizing antibodies as well as evidence of a T-cell responsiveness. Conclusions The findings of poor immune responses to a two-dose BNT162b2 vaccination in cardiothoracic transplant patients have a significant impact for organ transplant recipients specifically and possibly for immunocompromised patients in general. It urges for a review of future vaccine strategies in these patients.

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