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Polymorphism and liver transplant

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https://www.readbyqxmd.com/read/29627528/the-association-between-donor-genetic-variations-in-one-carbon-metabolism-pathway-genes-and-hepatitis-b-recurrence-after-liver-transplantation
#1
Di Lu, Jianyong Zhuo, Modan Yang, Chao Wang, Pan Linhui, Haiyang Xie, Xiao Xu, Shusen Zheng
BACKGROUNDS AND AIM: Hepatitis B recurrence adversely affects patients' survival after liver transplantation. This study aims to find association between donor gene variations of one carbon metabolism and post-transplant hepatitis B recurrence. METHODS: This study enrolled 196 patients undergoing liver transplantation for HBV related end-stage liver diseases. We detected 11 single nucleotide polymorphisms (SNP) of 7 one-carbon metabolism pathway genes (including MTHFR, MTR, MTRR, ALDH1L1, GART, SHMT1 and CBS) in donor livers and analyzed their association with HBV reinfection after liver transplantation...
April 5, 2018: Gene
https://www.readbyqxmd.com/read/29621122/survival-time-to-biopsy-proven-acute-rejection-and-tacrolimus-adverse-drug-reactions-in-pediatric-liver-transplantation
#2
Natalia Riva, Marcelo Dip, Esteban Halac, Paulo Cáceres Guido, Jean Baptiste Woillard, Nieves Licciardone, Debora Chan, Jefferson Buendía, Daniela Borgnia, Andrea Bosaleh, María Teresa de Davila, Oscar Imventarza, Paula Schaiquevich
BACKGROUND: Despite advances in surgical procedures and the optimization of immunosuppressive therapies in pediatric liver transplantation, acute rejection (AR) and serious adverse drug reaction (ADR) to tacrolimus still contribute to morbidity and mortality. Identifying risk factors of safety and efficacy parameters may help in optimizing individual immunosuppressive therapies. This study aimed to identify peritransplant predictors of AR and factors related to the risk of ADR to tacrolimus in a large Latin-American cohort of pediatric liver transplant patients...
April 3, 2018: Therapeutic Drug Monitoring
https://www.readbyqxmd.com/read/29605690/lack-of-evidence-of-association-between-ifng-and-il28b-polymorphisms-and-quantiferon-cmv-test-results-in-seropositive-transplant-patients
#3
Rocío Aguado, Aurora Páez-Vega, María L Agüera, Miguel Montejo, Lluis Guirado, Jesús Fortún, Alejandro Suárez-Benjumea, Oscar Len, María C Fariñas, Carmen de Gracia, Domingo Hernández, María J Cobos-Ceballos, Julián Torre-Cisneros, Sara Cantisán
The aim of this study was to analyze the relationship between the IFNG+874 T/A and IL28B (rs12979860) C/T polymorphisms and the secretion of IFNG by CD8+ T cells after stimulation with cytomegalovirus (CMV) peptides, measured using QuantiFERON-CMV (QF-CMV) assay. A total of 184 CMV-seropositive solid organ transplant patients (108 kidney, 68 liver and 8 lung) were recruited. Of them, 151 patients were QF-CMV Reactive (IFNG ≥0.2 UI/mL) and 33 were Non-reactive. Genotype frequencies in the study population were TT (26...
March 29, 2018: Human Immunology
https://www.readbyqxmd.com/read/29531644/prevalence-of-cyp2c19-genetic-polymorphism-among-normal-people-and-patients-with-hepatic-diseases
#4
Z Hashemizadeh, S A Malek-Hosseini, P Badiee
Background: Patients with hepatic diseases are treated with numerous drugs metabolized by cytochrome P450. Objective: To evaluate the frequencies of CYP2C19 variant alleles (*2, *3, and *17), genotypes, and phenotypes, and the relationship between the frequency of these alleles and the underlying hepatic diseases among patients with advanced liver diseases who were candidates for liver transplantation. Methods: The Study was conducted on 120 patients suffering from various hepatic disorders, candidates for liver transplantation, and 52 healthy volunteers...
2018: International Journal of Organ Transplantation Medicine
https://www.readbyqxmd.com/read/29489751/recognition-of-dhn-melanin-by-a-c-type-lectin-receptor-is-required-for-immunity-to-aspergillus
#5
Mark H T Stappers, Alexandra E Clark, Vishukumar Aimanianda, Stefan Bidula, Delyth M Reid, Patawee Asamaphan, Sarah E Hardison, Ivy M Dambuza, Isabel Valsecchi, Bernhard Kerscher, Anthony Plato, Carol A Wallace, Raif Yuecel, Betty Hebecker, Maria da Glória Teixeira Sousa, Cristina Cunha, Yan Liu, Ten Feizi, Axel A Brakhage, Kyung J Kwon-Chung, Neil A R Gow, Matteo Zanda, Monica Piras, Chiara Zanato, Martin Jaeger, Mihai G Netea, Frank L van de Veerdonk, João F Lacerda, António Campos, Agostinho Carvalho, Janet A Willment, Jean-Paul Latgé, Gordon D Brown
Resistance to infection is critically dependent on the ability of pattern recognition receptors to recognize microbial invasion and induce protective immune responses. One such family of receptors are the C-type lectins, which are central to antifungal immunity. These receptors activate key effector mechanisms upon recognition of conserved fungal cell-wall carbohydrates. However, several other immunologically active fungal ligands have been described; these include melanin, for which the mechanism of recognition is hitherto undefined...
February 28, 2018: Nature
https://www.readbyqxmd.com/read/29485445/fdg-pet-ct-findings-of-polymorphic-posttransplant-lymphoproliferative-disorders-in-a-transplanted-kidney
#6
Yuanyuan Yang, Wei Wang, Ying Kan, Jie Liu, Jigang Yang
A 55-year-old woman underwent simultaneous liver-kidney transplantation because of polycystic liver and kidney. Six months later, FDG PET/CT was acquired to evaluate possible lesions in the renal graft, which demonstrated abnormal F-FDG accumulation in the renal pelvic lesions without other abnormality. The subsequent pathology examination after biopsy demonstrated the polymorphic posttransplant lymphoproliferative disorders.
February 27, 2018: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/29484012/disseminated-porokeratosis-with-idiopathic-thrombocytopenia-case-report-and-literature-review-of-porokeratosis-and-related-disorders
#7
Anastasiya Atanasova Chokoeva, Uwe Wollina, Torello Lotti, Georgi Konstantinov Maximov, Ilia Lozev, Georgi Tchernev
BACKGROUND: Porokeratosis is characterised by one or more atrophic patches surrounded by a distinctive peripheral keratotic ridge, typically found on sun-exposed areas, with several clinical variants and typical histological findings. Despite ultraviolet radiation, varies antibody - related autoimmune disease treated with systemic steroids and other immunosuppressive conditions such as chronic liver disease, HIV and organ transplantations have been implicated in its etiopathology. CASE REPORT: We present a case of porokeratosis, associated with idiopathic thrombocytopenia in 74 - year old, otherwise healthy male patient, as we discuss the previously reported associated disorders...
January 25, 2018: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/29454235/donor-and-recipient-p450-gene-polymorphisms-influence-individual-pharmacological-effects-of-tacrolimus-in-chinese-liver-transplantation-patients
#8
Jianyu Liu, Yabo Ouyang, Dexi Chen, Bo Yao, Dongdong Lin, Zhiqiang Li, Yunjin Zang, Huan Liu, Xiaoyue Fu
The immunosuppressant drug tacrolimus (Tac) used for the prevention of immunological rejection is a metabolic substrate of cytochrome P450 enzymes. This study was designed to evaluate the short-term and long-term potential influence of single-nucleotide polymorphisms (SNPs) in CYP450 genes of liver transplant (LT) recipients as well as the donors on individual pharmacological effects of Tac and to guide individualized-medication from the perspective of pharmacogenomics. Twenty-one SNPs of the CYP450 gene were genotyped for both recipients and donors in 373 LT patients receiving Tac-based immunosuppressants...
April 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/29404469/significant-association-between-foxp3-gene-polymorphism-and-steroid-resistant-acute-rejection-in-living-donor-liver-transplantation
#9
Sapana Verma, Yuka Tanaka, Seiichi Shimizu, Naoki Tanimine, Hideki Ohdan
Previous studies have found that preferential accumulation of regulatory T (Treg) cells in liver allografts during acute cellular rejection (ACR) is associated with less severe rejection, suggesting a role of Treg cells in preventing excessive progress of ACR. We investigated the impact of single nucleotide polymorphisms (SNPs) in the Forkhead box P3 ( FOXP3 ) gene, a master regulator gene of Treg cells, on ACR severity in liver transplant (LT) recipients. In total, 102 living donor LT patients were enrolled in this study and categorized into no rejection (n = 86), steroid-sensitive acute rejection (SSAR; n = 11), and steroid-resistant acute rejection (SRAR; n = 5)...
July 2017: Hepatology Communications
https://www.readbyqxmd.com/read/29396131/donor-pnpla3-rs738409-genotype-is-a-risk-factor-for-graft-steatosis-a-post-transplant-biopsy-based-study
#10
Pavel Trunečka, Irena Míková, Dana Dlouhá, Jaroslav A Hubáček, Eva Honsová, Libor Kolesár, Věra Lánská, Soňa Fraňková, Jan Šperl, Milan Jirsa, Rudolf Poledne
BACKGROUND & AIMS: The rs738409 c.444C > G (p.I148M) polymorphism in PNPLA3 is a major factor predisposing to non-alcoholic fatty liver disease. The aim of the study was to clarify the impact of liver and extrahepatic expression of the PNPLA3 p.148M variant on liver graft steatosis after liver transplantation. METHODS: Fat content was assessed in liver biopsies from 176 transplant recipients. During a period of 4 ± 1 years after transplantation, 17 patients developed grade 3 steatosis, 14 patients grade 2 steatosis, 56 patients grade 1 steatosis, and 89 patients grade 0 steatosis...
January 9, 2018: Digestive and Liver Disease
https://www.readbyqxmd.com/read/29388302/cytotoxic-t-lymphocyte-therapy-for-post-transplant-lymphoproliferative-disorder-after-solid-organ-transplantation-in-children
#11
Fang Kuan Chiou, Sue V Beath, Gwen M Wilkie, Mark A Vickers, Bruce Morland, Girish L Gupte
EBV-CTL immunotherapy targets EBV antigens expressed by tumor cells in PTLD. Data on outcome of EBV-CTL in pSOT patients are limited. The aim of the study is to describe our experience with allogeneic, third-party EBV-CTL for the treatment of PTLD in pSOT patients in a single tertiary center. Retrospective review was performed of all pSOT patients who received EBV-CTL for PTLD. PTLD was diagnosed using World Health Organization histologic criteria. EBV-CTLs were derived from human leukocyte antigen-typed, EBV-seropositive third-party donors, and cryopreserved and maintained by an accredited national blood transfusion service...
March 2018: Pediatric Transplantation
https://www.readbyqxmd.com/read/29316067/deep-sequencing-shows-low-level-oncogenic-hepatitis-b-virus-variants-persists-post-liver-transplant-despite-potent-anti-hbv-prophylaxis
#12
K C K Lau, C Osiowy, E Giles, B Lusina, G van Marle, K W Burak, C S Coffin
Recent studies suggest that withdrawal of hepatitis B immune globulin (HBIG) and nucleos(t)ide analogues (NA) prophylaxis may be considered in HBV surface antigen (HBsAg)-negative liver transplant (LT) recipients with a low risk of disease recurrence. However, the frequency of occult HBV infection (OBI) and HBV variants after LT in the current era of potent NA therapy is unknown. Twelve LT recipients on prophylaxis were tested in matched plasma and peripheral blood mononuclear cells (PBMCs) for HBV quasispecies by in-house nested PCR and next-generation sequencing of amplicons...
January 6, 2018: Journal of Viral Hepatitis
https://www.readbyqxmd.com/read/29259377/pretransplantation-fetal-maternal-microchimerism-in-pediatric-liver-transplantation-from-mother
#13
Nam-Joon Yi, Min-Su Park, Eun Young Song, Hye Young Ahn, Jeik Byun, Hyeyoung Kim, Suk Kyun Hong, Kyungchul Yoon, Hyo-Sin Kim, Sung-Woo Ahn, Hae Won Lee, YoungRok Choi, Kwang-Woong Lee, Kyung-Suk Suh, Myoung Hee Park
AIM: To investigate the rates of pretransplantation fetal-maternal microchimerism (MC) and its effect on rejection in children receiving maternal liver grafts. METHODS: DNA or blood samples before liver transplantation (LT) were available in 45 pediatric patients and their mothers. The presence of pretransplantation MC to non-inherited maternal antigens (NIMAs) (NIMA-MC) in the peripheral blood was tested using nested PCR-single-strand conformation polymorphism analysis for the human leukocyte antigen (HLA)-DRB1 alleles...
December 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29221801/donor-polymorphisms-of-toll-like-receptor-4-rs1927914-associated-with-the-risk-of-hepatocellular-carcinoma-recurrence-following-liver-transplantation
#14
Guangjun Shi, Chuanxu Wang, Ping Zhang, Lisha Ji, Shifeng Xu, Xueying Tan, Hao Li
BACKGROUND: Hepatocellular carcinoma (HCC) recurrence after liver transplantation (LT) severely restricts the long-term survival of patients. Toll-like receptor 4 (TLR4) has been considered to be involved in hepatocarcinogenesis and metastasis. Additionally, there is a study demonstrating the significant association between TLR4 gene rs1927914 polymorphism and HCC, but no study investigated the association of the TLR4 rs1927914 polymorphism with the risk of HCC recurrence following LT...
August 2017: Archives of Medical Research
https://www.readbyqxmd.com/read/29185200/the-mthfr-polymorphism-affect-the-susceptibility-of-hcc-and-the-prognosis-of-hcc-liver-transplantation
#15
C Wang, H Xie, D Lu, Q Ling, P Jin, H Li, R Zhuang, X Xu, S Zheng
BACKGROUND: Methylenetetrahyfrofolate reductase (MTHFR) is the key enzyme for one carbon and folate metabolism. Previous studies have drawn different conclusions about the relationship between the mutation of MTHFR and hepatocellular carcinoma (HCC) occurrence. MTHFR polymorphisms' influence on liver transplantation for HCC recurrence has yet not been reported. Aim of this study was to clarify the impact of MTHFR polymorphism on hepatocarcinogenesis and the prognosis of liver transplant recipient with HCC...
November 28, 2017: Clinical & Translational Oncology
https://www.readbyqxmd.com/read/29184906/parvovirus-b19-in-the-context-of-hematopoietic-stem-cell-transplantation-evaluating-cell-donors-and-recipients
#16
Bianca E Gama, Vanessa E Emmel, Michelle Oliveira-Silva, Luciana M Gutiyama, Leonardo Arcuri, Marta Colares, Rita de Cássia Tavares, Luis F Bouzas, Eliana Abdelhay, Rocio Hassan
Background: Parvovirus B19 (B19V) is a common human pathogen, member of the family Parvoviridae. Typically, B19V has been found to infect erythroid progenitors and cause hematological disorders, such as anemia and aplastic crisis. However, the persistence of genomic deoxyribonucleic acid (DNA) has been demonstrated in tonsils, liver, skin, brain, synovial, and testicular tissues as well as bone marrow, for both symptomatic and asymptomatic subjects. Although the molecular and cellular mechanisms of persistence remain undefined, it raises questions about potential virus transmissibility and its effects in the context of allogeneic hematopoietic stem cell transplantation (allo-HSCT) recipients...
November 2017: Transplantation Direct
https://www.readbyqxmd.com/read/29162948/association-between-recipient-il-15-genetic-variant-and-the-prognosis-of-hbv-related-hepatocellular-carcinoma-after-liver-transplantation
#17
Tao Zhang, Yuan Liu, Xu Peng, Junwei Fan, Zhihai Peng
Objective: To investigate the association of donor and recipient IL-15 genetic variants with HCC recurrence and prognosis after LT. Methods: A total of 112 liver transplant patients with HBV-related HCC were enrolled. IL-15 rs10519613 and rs13122930 were genotyped in donors and recipients. Results: Recipient IL-15 rs10519613 polymorphism was found to be significantly related to HCC recurrence after LT. In multivariate analysis, tumor thrombus, UCSF criteria, and recipient IL-15 rs10519613 genotypes were independent predictive factors of HCC recurrence after LT...
2017: Disease Markers
https://www.readbyqxmd.com/read/29111570/the-killer-cell-lectin-like-receptor-b1-klrb1-503t-c-polymorphism-rs1135816-and-acute-rejection-after-liver-transplantation
#18
H Thude, S Rother, M Sterneck, J Klempnauer, B Nashan, R Schwinzer, M Koch
The killer cell lectin-like receptor B1 (KLRB1) gene encodes for CD161 expressed by different subsets of leukocytes involved in the development of acute liver transplant rejection. The single nucleotide polymorphism (SNP) 503T>C (rs1135816) in the KLRB1 gene represents a missense mutation modifying functional properties of CD161. The aim of our study is to determine whether the SNP 503T>C is associated with acute liver transplant rejection. We genotyped the SNP for 163 liver recipients without acute rejection, 125 recipients with a single acute rejection, and 53 recipients with multiple acute rejections...
January 2018: HLA
https://www.readbyqxmd.com/read/29095252/association-of-interleukin-28b-polymorphisms-with-platelet-count-and-liver-function-recovery-after-liver-transplant
#19
Yi Li, Tiantian Wei, Lin Yan, Zhiqiang Yang, Qian Huang, Yunying Shi, Lanlan Wang
The present genome-wide association study investigated the relationship of interleukin 28B (IL-28B) genetic variants with HBV susceptibility and prognosis of HBV-infected patients. This study aims to examine the role of IL-28B polymorphisms on transplant etiologies and the liver function recovery in Chinese liver transplant recipients.A total of 231 liver transplant recipients were enrolled in the study. The transplant etiologies included progressive HBV hepatitis, HBV-related liver cirrhosis (LC), HBV-related hepatocellular carcinoma (HCC), and non-HBV-related disease...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29071779/risk-factors-and-clinical-outcomes-of-pediatric-liver-transplant-recipients-with-post-transplant-lymphoproliferative-disease-in-a-multi-ethnic-asian-cohort
#20
James Guoxian Huang, Mervin Ye Qing Tan, Seng-Hock Quak, Marion Margaret Aw
BACKGROUND: We aimed to evaluate clinical characteristics, risk factors, and disease outcomes for liver transplant recipients (LTR) with post-transplant lymphoproliferative disease (PTLD) at our center. METHODS: Retrospective review of data of all pediatric LTR (1991-2015) was conducted. RESULTS: The overall incidence of PTLD was 16.4% (18/110), the majority (13/18) were early lesions, while 3/18 were polymorphic/monomorphic PTLD. The risk factors significant on univariate analysis were as follows: mean age (years) at transplant (1...
February 2018: Transplant Infectious Disease: An Official Journal of the Transplantation Society
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