Articles tagged "Immunogenicity"

2022 American Transplant Congress
Islet-Derived Exosomes Carry Self-Antigens and May Induce Autoimmunity After Transplantation
S. Vasu¹, C. Darden², J. Mattke², Y. Liu³, M. C. Lawrence³, B. Naziruddin¹
¹Baylor University Medical Ctr, Dallas, TX, ²Baylor University, Waco, TX, ³Baylor University Medical Center, Dallas, TX
*Purpose: Our earlier observations revealed release of exosomes from human islets containing microRNAs (miRNA) specific to islet stress and damage in vitro and in vivo…
2022 American Transplant Congress
Impaired Cellular Immunity and Elevated Myeloid Derived Suppressor Cells in Kidney Transplant Recipients with Impaired Antibody Response to Covid-19 Vaccination
B. Nibhanupudy¹, K. Mcdonald¹, M. Angelis¹, L. T. Chin¹, P. Wai¹, R. Metzger¹, C. Ashokkumar², R. Sindhi²
¹AdventHealth Transplant Institute, Orlando, FL, ²Plexision, Inc, Pittsburgh, PA
*Purpose: To evaluate post-vaccination cellular and antibody (Ab) immunity after COVID-19 vaccination in single blood samples from 17 kidney transplant (KT) recipients who had received…
2022 American Transplant Congress
Antibody Response and Cellular Phenotyping in Kidney Transplant Recipients Following Sars-CoV-2 Vaccination
N. M. Ali¹, J. Miles², S. Mehta¹, V. Tatapudi¹, B. Lonze¹, E. Weldon¹, Z. Stewart¹, C. DiMaggio¹, J. Allen³, S. Gray-Gaillard³, S. Solis³, M. Tuen³, J. Leonard¹, R. Montgomery¹, R. Herati³
¹Transplant Institute, NYU Langone Health, New York, NY, ²CareDx, Brisbane, NY, ³NYU Langone Health, New York, NY
*Purpose: Correlates of protection for SARS-CoV-2 vaccines are not well-established in kidney transplant recipients(KTRs). Studies have highlighted the importance of neutralizing antibodies(Abs), however data suggests…
2022 American Transplant Congress
Safety and Immunogenicity of Live Viral Vaccination After Pediatric Liver and Kidney Transplantation
A. Feldman¹, B. Beaty¹, N. Ebel², J. Ferrolino³, V. Gopalareddy⁴, J. Hollenbeck⁵, C. Jaramillo⁶, N. Kerkar⁷, S. Lerret⁸, G. Maron³, A. Mavis⁹, N. Ovchinsky¹⁰, M. Sell¹¹, T. Sharma¹², J. Stoll¹³, L. Danziger-Isakov¹⁴
¹UCD, Aurora, CO, ²Stanford, Palo Alto, CA, ³St. Jude, Memphis, TN, ⁴LCH, Charlotte, NC, ⁵Michigan Medicine, Ann Arbor, MI, ⁶PCH, Salt Lake City, UT, ⁷URMC, Rochester, NY, ⁸MCW, Milwaukee, WI, ⁹Duke, Durham, NC, ¹⁰Montefiore, NYC, NY, ¹¹MUSC, Charleston, SC, ¹²BCH, Boston, MA, ¹³WUSM, St Louis, MO, ¹⁴CCHMC, Cincinnati, OH
*Purpose: New recommendations suggest that measles-mumps-rubella vaccine (MMR-vx) and varicella vaccine (VZV-vx) may be administered to certain non-immune transplant recipients. The purpose of this study…
2022 American Transplant Congress
Single Blind Randomized Controlled Trial Comparing BNT162b2 Vs JNJ-78436735 Vaccine As An Additional Dose After Two Doses Of BNT162b2 Vaccine In Solid Organ Transplant (SOT) Recipients
Y. Natori¹, E. Martin², A. Mattiazzi³, J. Bini Viotti¹, K. S. Ortecho⁴, S. Pallikkuth⁵, S. Anjan¹, J. Simkins¹, G. Guerra³
¹Department of Medicine, Division of Infectious Diseases, University of Miami, Miami, FL, ²Department of Medicine, Division of Hepatology, University of Miami, Miami, FL, ³Department of Medicine, Division of Nephrology, University of Miami, Miami, FL, ⁴Miami Transplant Institute, Jackson Health System, Miami, FL, ⁵University of Miami, Miami, FL
*Purpose: Even though a high efficacy and immunogenicity of COVID-19 vaccines have been reported in the general population, vaccine immunogenicity is suboptimal in SOT recipients…
2022 American Transplant Congress
Molecular Characterization of the Plasma Secretome in Pediatric Liver Transplantation (pLTx) Identified Cytokine/Chemokine Signatures Potentially Linked to Beneficial Immunosuppressive Regimes (IS) and Recovery
E. Chichelnitskiy¹, L. Ruhl², I. Goldschmidt³, A. Karch⁴, L. Antiga⁵, D. Debray⁶, L. Hierro⁷, D. Kelly⁸, V. McLin⁹, E. Nicastro¹⁰, J. Pawlowska¹¹, P. Czubkowski¹¹, R. Mikolajczyk¹², U. Baumann¹³, C. Falk¹⁴
¹Institute of Transplant Immunology, Hannover Medical School (MHH), Hannover, Germany, ²Institute of Transplant Immunology, MHH, Hannover, Germany, ³Division of Pediatric Gastroenterology and Hepatology, MHH; European Paediatric Liver Transplantation Network, Hannover, Germany, ⁴Research Group Epidemiological and Statistical Methods, Helmholtz Centre for Infection Research, Braunschweig; German Center for Infection Research, TTU-IICH Hannover;Institute for Epidemiology and Social Medicine, University of Münster, Münster, Germany, ⁵Ospedali Riuniti di Bergamo, Bergamo, Italy, ⁶Hôpital Necker-Enfants Malades, Paris, France, ⁷Hospital Infantil Universitario La Paz, Madrid, Spain, ⁸Birmingham Childrens Hosp, Birmingham, United Kingdom, ⁹Service Spécialités Pédiatriques, Genève, Switzerland, ¹⁰Pediatric Hepatology, Gastroenterology and Transplantation, Hospital Papa Giovanni XXIII, Bergamo, Italy, ¹¹Gastroenterology, Hepatology, Nutritional Disorders and Pediatrics, The Children’s Memorial Health Institute, Warsaw, Poland, ¹²Institute of Medical Epidemiology, Biostatistics and Medical Informatics, University of Halle; German Center for Infection Research, TTU-IICH Hannover; MHH, Halle, Germany, ¹³Division of Pediatric Gastroenterology and Hepatology, MHH; Birmingham Children’s Hospital, UK, Hannover, Germany, ¹⁴Institute of Transplant Immunology, MHH; German Center for Infection Research, TTU-IICH, Hannover, Germany
*Purpose: In the European multicentre “ChilSFree” study we aimed to characterize longitudinal dynamics of soluble immune mediators during the first year after pLTx.*Methods: Using Luminex-based…
2022 American Transplant Congress
Functional Recellularized Patient Derived Endothelium; A Human Vascular Graft Approach
H. Tejeda Mora¹, J. Willemse², Y. den Hartog¹, I. Schurink², M. M. Verstegen², J. de Jonge², R. C. Minnee², M. W. van den Hoogen², C. C. Baan¹, L. J. van der Laan², M. J. Hoogduijn¹
¹Transplant Institute - Internal Medicine, Erasmus Medical Center, Rotterdam, Netherlands, ²Transplant Institute - Department of Surgery, Erasmus Medical Center, Rotterdam, Netherlands
*Purpose: In transplantation, the endothelial lining is the first barrier between the donor organ and recipient immune system. Damaged endothelium exposes extracellular matrix (ECM) molecules…
2022 American Transplant Congress
Immunogenicity of a Quadrivalent Human Papillomavirus Vaccine in Pediatric Kidney and Liver Transplant Recipients
T. Kitano¹, K. Schwartz², M. Abdulnoor¹, H. Garfield³, N. K. Booran¹, Y. Avitzur¹, C. Teoh¹, D. Hebert⁴, U. Allen³
¹Hospital for Sick Children, Toronto, ON, Canada, ²Public Health Ontario, Toronto, ON, Canada, ³University of Toronto, Toronto, ON, Canada, ⁴The Hospital for Sick Children, Toronto, ON, Canada
*Purpose: Solid-organ transplant recipients are at increased risk of developing human papillomavirus (HPV)-related diseases. The immunogenicity of HPV vaccine for solid-organ transplant population needs further…
2022 American Transplant Congress
Additional Dose of SARS-CoV-2 Vaccine Increases Neutralization Capacity in Solid Organ Transplant Recipients
Y. Yoo¹, J. Husson², T. Iraguha³, S. Niederhaus⁴, X. Wen⁵, A. Crane⁵, A. Carrier⁵, J. Avruch⁵, A. Ahuja⁶, M. Mathew⁷, S. Dahiya⁸, A. P. Rapoport⁸, D. Atanackovic⁸, K. K. Saharia²
¹Inst of Human Virology, Baltimore, MD, ²Div of Infect Diseases, Univ of Maryland School of Med. and Inst of Human Virology, Baltimore, MD, ³Univ of Maryland School of Med. and Greenebaum Comprehensive Cancer Center, Baltimore, MD, ⁴Dept of Surgery, Univ of Maryland School of Med., Baltimore, MD, ⁵Dept of Surgery, Univ of Maryland Med. Center, Baltimore, MD, ⁶Dept of Medicine, Univ of Maryland Med. Center, Baltimore, MD, ⁷Div of Infect. Diseases, Univ of Maryland Med. Center, Baltimore, MD, ⁸Dept of Medicine, Univ of Maryland School of Med. and Greenebaum Comprehensive Cancer Center, Baltimore, MD
*Purpose: Solid organ transplant recipients (SOTR) develop weak antibody responses after SARS-CoV-2 vaccination. Published data on neutralizing activity of plasma, a better measure of protection,…
2022 American Transplant Congress
Identification of Soluble and Cellular Biomarkers in Blood of End-Stage Patients Before Pediatric Liver Transplantation (pLTx)
E. Chichelnitskiy¹, L. Ruhl², I. Goldschmidt³, A. Karch⁴, L. Antiga⁵, D. Debray⁶, L. Hierro⁷, D. Kelly⁸, V. McLin⁹, E. Nicastro⁵, J. Pawlowska¹⁰, R. Mikolajczyk¹¹, U. Baumann¹², C. Falk¹³
¹Institute of Transplant Immunology, Hannover Medical School (MHH), Hannover, Germany, ²Institute of Transplant Immunology, MHH, Hannover, Germany, ³Division of Pediatric Gastroenterology and Hepatology, MHH; European Paediatric Liver Transplantation Network, Hannover, Germany, ⁴Research Group Epidemiological and Statistical Methods, Helmholtz Centre for Infection Research, Braunschweig; German Center for Infection Research, TTU-IICH Hannover; Institute for Epidemiology and Social Medicine, University of Münster, Münster, Germany, ⁵Ospedali Riuniti di Bergamo, Bergamo, Italy, ⁶Hôpital Necker-Enfants Malades, Paris, France, ⁷Hospital Infantil Universitario La Paz, Madrid, Spain, ⁸Birmingham Children's Hospital, Birmingham, United Kingdom, ⁹Service Spécialités Pédiatriques, Genève, Switzerland, ¹⁰Gastroenterology, Hepatology, Nutritional Disorders and Pediatrics, The Children’s Memorial Health Institute, Warsaw, Poland, ¹¹German Center for Infection Research, TTU-IICH Hannover; Institute of Medical Epidemiology, Biostatistics and Medical Informatics, University of Halle, Halle, Germany, ¹²Division of Pediatric Gastroenterology and Hepatology, MHH; Birmingham Children’s Hospital, UK; European Paediatric Liver Transplantation Network, Hannover, Germany, ¹³Institute of Transplant Immunology, MHH; German Center for Infection Research, TTU-IICH, Hannover, Germany
*Purpose: In the European multicentre “ChilSFree” study we aimed to identify soluble and cellular biomarkers in blood of various end-stage diseases before pLTx.*Methods: Using flow…

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