Articles tagged "Histology"

2022 American Transplant Congress
Regulatory Gene Pathways Are Upregulated in Heart Transplant Biopsies with Quilty Lesions
Q. Cai, L. De Las Casas, J. Torrealba
Pathology, UTSW Medical Ctr, Dallas, TX
*Purpose: Quilty lesions (QL) are commonly sub-endocardial lymphoid aggregates found in biopsies from heart transplants. Their appearance and presence in the cardiac tissue is still…
2022 American Transplant Congress
The Impact of Neutralizing Antibodies on Polyomavirus Infections in Mice
D. R. Butcher, B. D. Thompson, H. K. Singh, V. Nickeleit
Pathology and Laboratory Medicine, UNC Chapel Hill School of Medicine, Chapel Hill, NC
*Purpose: Definitive polyomavirus nephropathy (PyVN) affects kidney transplants and impacts allograft function and survival. Data suggest that neutralizing PyV strain specific antibodies can attenuate and…
2022 American Transplant Congress
Fibroblastic Reticular Cell Lama4 Regulates T Cell Migration to Lymph Nodes and Adaptive Immunity
L. Li¹, M. Shirkey¹, T. Zhang¹, W. Piao¹, V. Saxena¹, Z. Mei¹, Y. Guo¹, A. Krupnick¹, A. Kensiski¹, S. Gavzy¹, R. Abdi², J. Bromberg¹
¹Surgery, UMB, Baltimore, MD, ²Harvard University, Boston, MA
*Purpose: Lymph node (LN) stromal laminin α4 (Lama4) is associated with tolerance. We hypothesized that fibroblastic reticular cell (FRC) derived Lama4 contributes to a tolerogenic…
2022 American Transplant Congress
Circulating and Intragraft Donor (HLA)-Specific B Cells Drive Allograft Rejection After Kidney Transplantation
A. Torija¹, N. Bolaños¹, L. Donadeu¹, M. Meneghini², I. Torres², A. Gabaldon², M. Gomà³, E. Crespo¹, F. Moreso⁴, O. Bestard²
¹Vall d'Hebron Research Institute (VHIR), Barcelona, Spain, ²Vall d'Hebron University Hospital, Barcelona, Spain, ³Bellvitge University Hospital, Barcelona, Spain, ⁴Vall d'Heron University Hospital, Barcelona, Spain
*Purpose: Besides donor-specific antibodies (DSA), circulating donor(HLA)-specific memory B cells (mBc) have also shown to play a deleterious role driving antibody-mediated rejection (ABMR) in kidney…
2022 American Transplant Congress
Histopathology at Diagnosis and One-Year Outcomes in Antibody Mediated Rejection in Pediatric Kidney Transplant Recipients: Preliminary Findings from the Paramour “Pediatric Renal AMR Outcomes” Study
R. Zahr¹, D. Puliyanda², I. Ashoor³, N. Hayde⁴, S. Solomon⁵, R. Engen⁶, L. Harshman⁷, C. Peterson⁸, S. McEwen⁹, A. Jain¹⁰, R. Garro¹¹, A. Mansuri¹², M. Kallash¹³, K. Twombley¹⁴
¹Pediatrics, University of Tennessee Health Science Center, Memphis, TN, ²Cedars-Sinai Med Ctr, West Hollywood, CA, ³Pediatrics, Lousiana State University, New Orleans, LA, ⁴Montefiore Medical Center, Bronx, NY, ⁵The Children's Hospital at Montefiore, New York, NY, ⁶Pediatrics, University of Wisconsin Madison, Madison, WI, ⁷University of Iowa Children's Hospital, Iowa City, IA, ⁸University of Utah, Salt Lake City, UT, ⁹University of Minnesota, Minneapolis, MN, ¹⁰Pediatrics, Wayne State University, Troy, MI, ¹¹Emory University, Atlanta, GA, ¹²Pediatrics, Augusta University, Augusta, GA, ¹³Pediatrics, The Ohio State Univesrity, Columbus, OH, ¹⁴Medical University of South Carolina, Charleston, SC
*Purpose: Antibody mediated rejection (AMR) is a major cause of kidney allograft dysfunction leading to graft loss. There is a paucity of data regarding how…
2022 American Transplant Congress
Pre-Transplant Evaluation of Patients Undergoing Combined Heart-Liver Transplantation and Correlation with Explant Pathology
A. Shingina¹, J. N. Menachem¹, S. Brown¹, I. A. Ziogas², W. K. Wu³, M. J. Izzy⁴, J. Liang¹, K. Washington¹, S. Alexopoulos⁵
¹Vanderbilt University Medical Center, Nashville, TN, ²Division of Hepatobiliary Surgery and Liver Transplantation, Vanderbilt University Medical Center, Nashville, TN, ³Thoracic Surgery; Hepatobiliary Surgery and Liver Transplantation, Vanderbilt University Medical Center, Nashville, TN, ⁴GI and Hepatology, Vanderbilt University Medical Center, Nashville, TN, ⁵Vanderbilt Medical Center, Nashville, TN
*Purpose: Fontan-associated liver disease (FALD) is a well-described complication of Fontan physiology. More patients with failing Fontan are being evaluated for heart transplant and evidence-based…
2022 American Transplant Congress
Single Cell Multiomics Reveals Immune Mediators in Acute Cellular Rejection Following Pediatric Liver Transplantation
B. Rocque¹, D. Sarode², A. Barbetta³, P. Singh⁴, C. Goldbeck⁴, C. Weaver⁵, O. Akbari⁴, R. Kohli⁵, J. Emamaullee⁶
¹University of Southern California Keck School of Medicine, Los Angeles, CA, ²Keck School of Medicine of University of Southern California, Pasadena, CA, ³Surgery, abdominal transplat, University of Southern California, Los Angeles, CA, ⁴Keck School of Medicine of USC, Los Angeles, CA, ⁵Childrens Hospital Los Angeles, Los Angeles, CA, ⁶University of Southern California, Los Angeles, CA
*Purpose: Acute cellular rejection (ACR) is a common complication following pediatric liver transplantation with potential negative effects on allograft longevity. Currently, diagnosis and management are…
2022 American Transplant Congress
Recoverability of Diabetic Nephropathy of Donor Kidney After Kidney Transplantation
K. Lee, J. Park
Samsung Medical Center, Seoul, Korea, Republic of
*Purpose: The natural course of diabetic donors on the outcome of kidney transplantation (KT) is controversial. The aim of this study was to analyze the…
2022 American Transplant Congress
Enhanced Histological Yield and Actionable Findings When Biopsy is Guided by Donor-Derived Cell-Free DNA (dd-cfDNA)
M. R. Weir¹, D. Mandelbrot², J. S. Bromberg¹, S. Mehta³, E. Poggio⁴, E. Huang⁵, G. Shekhtman⁶, N. Agrawal⁷, W. Tian⁸, M. Cooper⁹
¹University of Maryland School of Medicine, Baltimore, MD, ²University of Wisconsin, Madison, WI, ³University of Alabama, Birmingham, AL, ⁴Cleveland Clinic, Cleveland, OH, ⁵Cedars-Sinai Medical Center, Los Angeles, CA, ⁶CareDx Inc., Brisbane, CA, ⁷CareDx Inc, Brisbane, CA, ⁸CareDx, Brisbane, CA, ⁹MedStar Georgetown Transplant Institute, Washington, DC
*Purpose: Implementation of molecular biomarkers in kidney transplantation has expanded the amount of information available to clinicians before deciding to pursue biopsy. We evaluated how…
2022 American Transplant Congress
Wide Spectrum of Molecular Injury Highlights Heterogeneity of Banff Tubulitis and Interstitial Inflammation Lesions
M. J. Ellis¹, T. Maw², E. Huang³, E. Stites⁴, F. Shihab⁵, D. C. Brennan⁶, G. Shekhtman⁷, N. Agrawal⁷, J. Zeng⁷, S. Kung⁸
¹Duke University, Durham, NC, ²University of Southern California, Los Angeles, CA, ³Cedars-Sinai Medical Center, Los Angeles, CA, ⁴University of Colorado, Aurora, CO, ⁵University of Utah, Salt Lake City, UT, ⁶Johns Hopkins School of Medicine, Baltimore, MD, ⁷CareDx, Brisbane, CA, ⁸University of California, San Francisco, San Francisco, CA
*Purpose: The pathological definition and clinical significance of borderline T cell-mediated rejection (BL-TCMR) remains an area of active debate, leading to inconsistencies in therapeutic strategy.…

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