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Wall A, Monday K, Schwartz G, McKenna GJ, Richards G, Rayle M, Huang Y, Jothidasan A, Lozonschi L, Testa G. First US Cardiac Rapid Recovery With Abdominal Normothermic Regional Perfusion Donation After Circulatory Death Procurement. Prog Transplant 2024; 34:55-56. [PMID: 38449091 DOI: 10.1177/15269248241237818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Affiliation(s)
- Anji Wall
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, TX, USA
| | - Kara Monday
- Department of General Surgery, Baylor University Medical Center, Dallas, TX, USA
| | - Gary Schwartz
- Department of Cardiothoracic Surgery, Baylor University Medical Center, Dallas, TX, USA
| | - Gregory J McKenna
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, TX, USA
| | - Grant Richards
- Department of Cardiothoracic Surgery, Baylor University Medical Center, Dallas, TX, USA
| | - Murphy Rayle
- Department of Cardiothoracic Surgery, Baylor University Medical Center, Dallas, TX, USA
| | - Yi Huang
- TransMedics, Inc, Andover, MA, USA
| | | | - Lucian Lozonschi
- Division of Cardiothoracic Surgery, Tampa General Hospital, Tampa, FL, USA
| | - Giuliano Testa
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, TX, USA
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2
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Goldberg DS, McKenna GJ. Transplant center variability in utilizing nonstandard donors and its impact on the transplantation of patients with lower MELD scores. Liver Transpl 2024; 30:461-471. [PMID: 37902549 DOI: 10.1097/lvt.0000000000000294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 10/19/2023] [Indexed: 10/31/2023]
Abstract
There is a subset of patients with lower MELD scores who are at substantial risk of waitlist mortality. In order to transplant such patients, transplant centers must utilize "nonstandard" donors (eg, living donors, donation after circulatory death), which are traditionally offered to those patients who are not at the top of the waitlist. We used Organ Procurement and Transplantation data to evaluate center-level and region-level variability in the utilization of nonstandard donors and its impact on MELD at transplant among adult liver-alone non-status 1 patients transplanted from April 1, 2020, to September 30, 2022. The center-level variability in the utilization of nonstandard donors was 4-fold greater than the center-level variability in waitlisting practices (waitlistings with a MELD score of <20). While there was a moderate correlation between center-level waitlisting and transplantation of patients with a MELD score of <20 ( p = 0.58), there was a strong correlation between center-level utilization of nonstandard donors and center-level transplantation of patients with a MELD score of <20 ( p = 0.75). This strong correlation between center-level utilization of "nonstandard" donors and center-level transplantation of patients with a MELD score of <20 was limited to regions 2, 4, 5, 9, and 11. Transplant centers that utilize more nonstandard donors are more likely to successfully transplant patients at lower MELD scores. Public reporting of these data could benefit patients, caregivers, and referring providers, and be used to help maximize organ utilization.
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Affiliation(s)
- David S Goldberg
- Division of Digestive Health and Liver Diseases, Department of Medicine, University of Miami Miller School of Medicine, Miami, Florida, USA
- Department of Public Health Sciences, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Gregory J McKenna
- Department of Surgery, Baylor University Medical Center, Baylor Simmons Transplant Institute, Dallas, Texas, USA
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Wall A, Arunachalam P, Martinez E, Ruiz R, Fernandez H, Bayer J, Gupta A, McKenna GJ, Lee SH, Adams B, Butler D, Noesges S, Duncan M, Rayle M, Monday K, Schwartz G, Testa G. Stepwise development and expansion of an abdominal normothermic regional perfusion program for donation after circulatory determination of death organ procurement. Clin Transplant 2024; 38:e15297. [PMID: 38545915 DOI: 10.1111/ctr.15297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 02/12/2024] [Accepted: 03/09/2024] [Indexed: 04/20/2024]
Abstract
INTRODUCTION Normothermic regional perfusion (NRP) represents an innovative technology that improves the outcomes for liver and kidney recipients of donation after circulatory determination of death (DCD) organs but protocols for abdominal-only NRP (A-NRP) DCD are lacking in the US. METHODS We describe the implementation and expansion strategies of a transplant-center-based A-NRP DCD program that has grown in volume, geographical reach, and donor acceptance parameters, presented as four eras. RESULTS In the implementation era, two donors were attempted, and one liver graft was transplanted. In the local expansion era, 33% of attempted donors resulted in transplantation and 42% of liver grafts from donors who died within the functional warm ischemic time (fWIT) limit were transplanted. In the Regional Expansion era, 25% of attempted donors resulted in transplantation and 50% of liver grafts from donors who died within the fWIT limit were transplanted. In the Donor Acceptance Expansion era, 46% of attempted donors resulted in transplantation and 72% of liver grafts from donors who died within the fWIT limit were transplanted. Eight discarded grafts demonstrated a potential opportunity for utilization. CONCLUSION The stepwise approach to building an A-NRP program described here can serve as a model for other transplant centers.
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Affiliation(s)
- Anji Wall
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas, USA
| | - Priya Arunachalam
- Texas A&M College of Medicine, Dallas Regional Campus, Dallas, Texas, USA
| | - Eric Martinez
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas, USA
| | - Richard Ruiz
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas, USA
| | - Hoylan Fernandez
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas, USA
| | - Johanna Bayer
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas, USA
| | - Amar Gupta
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas, USA
| | - Gregory J McKenna
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas, USA
| | - Seung-Hee Lee
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas, USA
| | | | | | - Scott Noesges
- Department of Cardiothoracic Surgery, Baylor University Medical Center, Dallas, Texas, USA
| | - Michael Duncan
- Department of Cardiothoracic Surgery, Baylor University Medical Center, Dallas, Texas, USA
| | - Murphy Rayle
- Department of Cardiothoracic Surgery, Baylor University Medical Center, Dallas, Texas, USA
| | - Kara Monday
- Department of General Surgery, Baylor University Medical Center, Dallas, Texas, USA
| | - Gary Schwartz
- Department of Cardiothoracic Surgery, Baylor University Medical Center, Dallas, Texas, USA
| | - Giuliano Testa
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas, USA
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Wall AE, Rosenzweig M, McKenna GJ, Ma TW, Asrani SK, Testa G. Clarification on the 6-month abdominal transplant recipient outcomes from donation after circulatory death heart donors: A retrospective analysis by procurement technique. Am J Transplant 2023; 23:1817-1818. [PMID: 37604430 DOI: 10.1016/j.ajt.2023.08.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 08/04/2023] [Accepted: 08/10/2023] [Indexed: 08/23/2023]
Affiliation(s)
- Anji Elizabeth Wall
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas, USA.
| | - Matthew Rosenzweig
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas, USA
| | - Gregory J McKenna
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas, USA
| | - Tsung-Wei Ma
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas, USA
| | - Sumeet K Asrani
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas, USA
| | - Giuliano Testa
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas, USA
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Wall A, Rosenzweig M, McKenna GJ, Ma TW, Asrani SK, Testa G. Six-month abdominal transplant recipient outcomes from donation after circulatory death heart donors: A retrospective analysis by procurement technique. Am J Transplant 2023; 23:987-995. [PMID: 37088143 DOI: 10.1016/j.ajt.2023.04.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 04/07/2023] [Accepted: 04/19/2023] [Indexed: 04/25/2023]
Abstract
Standard US practice for donation after circulatory death (DCD) abdominal organ procurement is superrapid recovery (SRR). A newer approach using thoracoabdominal normothermic regional perfusion (TA-NRP) shows promise for better recipient outcomes for all organs, but there are few reports of abdominal recipient outcomes from TA-NRP donors. We used the United Network for Organ Sharing data to identify all cardiac DCD donors from October 1, 2020, to May 20, 2022, and categorized them by recovery procedure (SRR vs TA-NRP). We then identified all liver, kidney, and pancreas recipients of these donors for whom 6-month outcome data were available and compared patient and graft survival, kidney delayed graft function (DGF), and biliary complications between TA-NRP DCD and SRR DCD organ recipients. Patient and graft survival did not differ significantly between groups for either kidney or liver recipients. Significantly fewer TA-NRP kidney recipients developed DGF (12.7% [15/118] vs 42.0% [84/200], P <.001), and TA-NRP and pumped kidneys had lower odds for DGF on multivariate analysis. No liver recipients in either group had biliary complications or were relisted for transplantation for ischemic cholangiopathy. Although long-term outcomes need to be investigated, our early results show similar outcomes for recipients of TA-NRP DCD abdominal organs versus recipients of SRR DCD abdominal organs. We believe that TA-NRP is an effective approach to expand the use of DCD organs.
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Affiliation(s)
- Anji Wall
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas, USA.
| | - Matthew Rosenzweig
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas, USA
| | - Gregory J McKenna
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas, USA
| | - Tsung-Wei Ma
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas, USA
| | - Sumeet K Asrani
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas, USA
| | - Giuliano Testa
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas, USA
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York JR, Testa G, Gunby RT, Putman JM, McKenna GJ, Koon EC, Bayer J, Zhang L, Gregg AR, Johannesson L. Neonatal Outcomes after Uterus Transplantation: Dallas Uterus Transplant Study. Am J Perinatol 2023; 40:42-50. [PMID: 33878776 DOI: 10.1055/s-0041-1727212] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
OBJECTIVE Limited data are available on the outcome of infants born after uterus transplantation. Our aim was to describe the hospital course and laboratory findings in the first 2 months of life of the 12 infants born in the Dallas UtErus Transplant Study (DUETS). STUDY DESIGN Based on the trial protocol, information about infants was collected in a prospective fashion, including infant demographics, hospital course, and laboratory values. RESULTS Twelve infants were delivered, all by cesarean section, from 11 mothers who had undergone uterus transplantation (one mother had two pregnancies and delivered two babies). All pregnancies were singleton. The mothers received immunosuppressive therapy, and one had a rejection episode that was detected during pregnancy. The rejection episode resolved after steroid treatment. The infants had a median gestational age of 366/7 weeks (range: 306/7-380/7 weeks) and median birth weight of 2,920 g (range: 1,770-3,470 g). The lowest Apgar's score at 5 minutes was 8. All infants were appropriate size for gestational age. Two infants presented with bandemia but negative blood cultures. At 2 months of age, all infants achieved the developmental and behavioral milestones outlined by the American Academy of Pediatrics. CONCLUSION The 12 infants born from mothers with uterus transplants had a neonatal course that reflected the gestational age at delivery. No baby was born with an identified malformation or organ dysfunction. Longer follow-up and a larger number of infants are needed to confirm these observations. KEY POINTS · Normal fetal development after uterus transplantation.. · No baby was born with malformations or showed any organ dysfunction.. · At 2 months, all infants achieved appropriate developmental and behavioral milestones..
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Affiliation(s)
- Jackie R York
- Department of Neonatology, Baylor University Medical Center, Dallas, Texas
| | - Giuliano Testa
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas
| | - Robert T Gunby
- Department of Obstetrics and Gynecology, Baylor University Medical Center, Dallas, Texas
| | - J Michael Putman
- Fertility Center of Dallas, Baylor University Medical Center, Dallas, Texas
| | - Gregory J McKenna
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas
| | - Eric C Koon
- Department of Obstetrics and Gynecology, Baylor University Medical Center, Dallas, Texas
| | - Johanna Bayer
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas
| | - Lilly Zhang
- Fertility Center of Dallas, Baylor University Medical Center, Dallas, Texas
| | - Anthony R Gregg
- Department of Obstetrics and Gynecology, Baylor University Medical Center, Dallas, Texas.,Department of Obstetrics and Gynecology, PRISMA Health-University of South Carolina School of Medicine, Columbia, South Carolina
| | - Liza Johannesson
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas.,Department of Obstetrics and Gynecology, Baylor University Medical Center, Dallas, Texas
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Wall AE, McKenna GJ, Onaca N, Ruiz R, Bayer J, Fernandez H, Martinez E, Gupta A, Askar M, Spak CW, Testa G. Utilization of a SARS-CoV-2-positive donor for liver transplantation. Proc AMIA Symp 2022; 35:62-63. [PMID: 34970035 DOI: 10.1080/08998280.2021.1985888] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Liver transplantation rates have been negatively affected by the pandemic caused by coronavirus disease 2019 (COVID-19), the disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Current practice in the liver transplant community is to avoid utilizing SARS-CoV-2-positive donors for liver transplantation unless there is a compelling reason such as recipient illness severity. In this case, we report the use of a donor who had a positive exposure to and symptom history for COVID-19 and tested positive for SARS-CoV-2 on admission for a liver transplant recipient with primary sclerosing cholangitis and a Model of End-Stage Liver Disease score of 23 with no known COVID-19 exposures. We focus on the decision to accept this particular organ, as well as the discussion with the recipient about the unknowns of disease transmission and risk associated with this donor. The current case argues that transplant programs should begin to consider low-risk donors with positive SARS-CoV-2 testing for recipients who have the potential to benefit from liver transplantation, which may not only be those with the most severe illness.
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Affiliation(s)
- Anji E Wall
- Baylor Simmons Transplant Institute, Dallas, Texas
| | | | | | - Richard Ruiz
- Baylor Simmons Transplant Institute, Dallas, Texas
| | | | | | | | - Amar Gupta
- Baylor Simmons Transplant Institute, Dallas, Texas
| | - Medhat Askar
- Baylor Simmons Transplant Institute, Dallas, Texas.,Department of Pathology and Laboratory Medicine, Texas A&M Health Science Center College of Medicine, Dallas, Texas
| | - Cedric W Spak
- Baylor Simmons Transplant Institute, Dallas, Texas.,Division of Infectious Diseases, Baylor University Medical Center, Dallas, Texas
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8
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Wall AE, da Graca B, Asrani SK, Ruiz R, Fernandez H, Gupta A, Martinez E, Bayer J, McKenna GJ, Goldstein R, Onaca N, Trotter JF, Testa G. Cost Analysis of Liver Acquisition Fees Before and After Acuity Circle Policy Implementation. JAMA Surg 2021; 156:1051-1057. [PMID: 34495291 DOI: 10.1001/jamasurg.2021.4406] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Importance Acuity circles (AC) liver allocation policy was implemented to eliminate donor service area geographic boundaries from liver allocation and to decrease variability in median Model of End-stage Liver Disease (MELD) score at transplant and wait list mortality. However, the broader sharing of organs was also associated with more flights for organ procurements and higher costs associated with the increase in flights. Objective To determine whether the costs associated with liver acquisition changed after the implementation of AC allocation. Design, Setting, and Participants This single-center cost comparison study analyzed fees associated with organ acquisition before and after AC allocation implementation. The cost data were collected from a single transplant institute with 2 liver transplant centers, located 30 miles apart, in different donation service areas. Cost, recipient, and transportation data for all cases that included fees associated with liver acquisition from July 1, 2019, to October 31, 2020, were collected. Exposures Primary liver offer acceptance with associated organ procurement organization or charter flight fees. Main Outcomes and Measures Specific fees (organ acquisition, surgeon, import, and charter flight fees) and total fees per donor were collected for all accepted liver donors with at least 1 associated fee during the study period. Results Of 213 included donors, 171 were used for transplant; 90 of 171 (52.6%) were male, and the median (interquartile range) age of donors was 41.0 (30.0-52.8) years in the pre-AC period and 36.9 (24.0-48.8) years in the post-AC period. There was no significant difference in the post-AC compared with pre-AC period in median (range) MELD score (24 [8-40] vs 25 [6-40]; P = .27) or median (range) match run sequence (15 [1-3951] vs 10 [1-1138]; P = .31), nor in mean (SD) distance traveled (155.83 [157.00] vs 140.54 [144.33] nautical miles; P = .32) or percentage of donors requiring flights (58.5% [69 of 118] vs 56.8% [54 of 95]; P = .82). However, costs increased significantly in the post-AC period: total cost increased 16% per accepted donor (mean [SD] of $52 966 [13 278] vs $45 725 [9300]; P < .001) and 55% per declined donor (mean [SD] of $15 865 [3942] vs $10 217 [4853]; P < .001). Contributing factors included more than 2-fold increases in the proportions of donors incurring import fees (31.4% [37 of 118] vs 12.6% [12 of 95]; P = .002) and surgeon fees (19.5% [23 of 118] vs 9.5% [9 of 95]; P = .05), increased acquisition fees (10% increase; mean [SD] of $43 860 [3266] vs $39 980 [2236]; P < .001), and increased flight expenses (43% increase; mean [SD] of $12 904 [6066] vs $9049 [5140]; P = .002). Conclusions and Relevance The unintended consequences of implementing broader sharing without addressing organ acquisition fees to account for increased importation between organ procurement organizations must be remedied to contain costs and ensure viability of transplant programs.
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Affiliation(s)
- Anji E Wall
- Baylor Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas
| | - Briget da Graca
- Baylor Scott & White Research Institute, Baylor Scott & White Health, Dallas, Texas
| | - Sumeet K Asrani
- Baylor Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas
| | - Richard Ruiz
- Baylor Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas
| | - Hoylan Fernandez
- Baylor Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas
| | - Amar Gupta
- Baylor Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas
| | - Eric Martinez
- Baylor Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas
| | - Johanna Bayer
- Baylor Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas
| | - Gregory J McKenna
- Baylor Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas
| | - Robert Goldstein
- Baylor Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas
| | - Nicholas Onaca
- Baylor Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas
| | - James F Trotter
- Baylor Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas
| | - Giuliano Testa
- Baylor Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas
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9
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Ruiz R, Cox T, McKenna GJ, Onaca N, Testa G, Fernandez H, Bayer J, Wall A, Martinez E, Gupta A, DiNubila JM, Jennings N, Wicklund K. Effect of subcutaneous tissue depth on outcomes of kidney transplantation. Proc (Bayl Univ Med Cent) 2020; 34:237-241. [PMID: 33678955 DOI: 10.1080/08998280.2020.1852835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
Although post-kidney transplant (KT) wound complications are associated with elevated body mass index (BMI), BMI is not an accurate surrogate of obesity. On the other hand, subcutaneous depth (SQD) measurement is a direct marker of truncal obesity. We examined outcomes of differing intraoperative SQD measurements in 113 KT-only recipients over 20 months. Recipients' median age was 51 years; median BMI, 28 kg/m2; and mean SQD, 2.9 cm. Patients were stratified into groups of SQD ≤2.5 cm, >2.5-5 cm, and >5 cm. An SQD of >2.5 to 5 cm correlated with a BMI of 30 kg/m2 (obesity) and an SQD >5 cm correlated with a BMI >35 kg/m2 (severe obesity). Degree of SQD was not associated with more frequent technical complications such as fascial dehiscence, lymphocele formation, renal artery thrombosis/stenosis, urine leak, or ureteral stenosis. However, an SQD >2.5 cm was a risk factor for requiring a wound vacuum-assisted closure device. There was no difference in graft or patient survival among the three SQD groups. Obesity, as measured directly by SQD, was not associated with increased technical complications or poor outcomes after KT. As expected, there was a higher incidence of wound complications in the higher SQD groups requiring intervention.
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Affiliation(s)
- Richard Ruiz
- Department of Transplant Surgery, Simmons Transplant Institute, Baylor Scott & White All Saints Medical Center, Fort Worth, Texas
| | - Thomas Cox
- Department of Transplant Surgery, Simmons Transplant Institute, Baylor Scott & White All Saints Medical Center, Fort Worth, Texas
| | - Gregory J McKenna
- Department of Transplant Surgery, Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas
| | - Nicholas Onaca
- Department of Transplant Surgery, Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas
| | - Giuliano Testa
- Department of Transplant Surgery, Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas
| | - Hoylan Fernandez
- Department of Transplant Surgery, Simmons Transplant Institute, Baylor Scott & White All Saints Medical Center, Fort Worth, Texas
| | - Johanna Bayer
- Department of Transplant Surgery, Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas
| | - Anji Wall
- Department of Transplant Surgery, Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas
| | - Eric Martinez
- Department of Transplant Surgery, Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas
| | - Amar Gupta
- Department of Transplant Surgery, Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas
| | - J Michelle DiNubila
- Department of Transplant Surgery, Simmons Transplant Institute, Baylor Scott & White All Saints Medical Center, Fort Worth, Texas
| | - Nicole Jennings
- Department of Transplant Surgery, Simmons Transplant Institute, Baylor Scott & White All Saints Medical Center, Fort Worth, Texas
| | - Kari Wicklund
- Department of Transplant Surgery, Simmons Transplant Institute, Baylor Scott & White All Saints Medical Center, Fort Worth, Texas
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10
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Testa G, McKenna GJ, Gunby RT, Anthony T, Koon EC, Warren AM, Putman JM, Zhang L, dePrisco G, Mitchell JM, Wallis K, Klintmalm GB, Olausson M, Johannesson L. First live birth after uterus transplantation in the United States. Am J Transplant 2018; 18:1270-1274. [PMID: 29575738 DOI: 10.1111/ajt.14737] [Citation(s) in RCA: 147] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Revised: 03/09/2018] [Accepted: 03/09/2018] [Indexed: 01/25/2023]
Abstract
Uterus transplantation has proven to be a successful treatment for women with absolute uterine infertility, caused either by the absence of a uterus or the presence of a nonfunctioning uterus. We report the first birth of a healthy child following uterus transplantation in the United States, from a recipient of a uterus allograft procured from an altruistic living donor. Two major modifications from the previously reported live births characterized this uterus transplant. First, the transplanted uterus relied upon and sustained the pregnancy while having only the utero-ovarian vein as venous outflow. The implication is a significantly simplified living donor surgery that paves the way for minimally invasive laparoscopic or robot-assisted techniques for the donor hysterectomy. Second, the time from transplantation to embryo transfer was significantly shortened from prior protocols, allowing for an overall shorter exposure to immunosuppression by the recipient and lowering the risk for potential adverse effects from these medications.
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Affiliation(s)
- G Testa
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, TX, USA
| | - G J McKenna
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, TX, USA
| | - R T Gunby
- Obstetrics and Gynecology, Baylor University Medical Center, Dallas, TX, USA
| | - T Anthony
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, TX, USA
| | - E C Koon
- Obstetrics and Gynecology/Gynecologic Oncology, Baylor University Medical Center, Dallas, TX, USA
| | - A M Warren
- Division of Trauma, Acute Care and Critical Care Surgery, Baylor University Medical Center, Dallas, TX, USA
| | - J M Putman
- Obstetrics and Gynecology, Baylor University Medical Center, Dallas, TX, USA.,Fertility Center of Dallas, Dallas, TX, USA
| | - L Zhang
- Fertility Center of Dallas, Dallas, TX, USA
| | - G dePrisco
- Diagnostic Radiology, Baylor University Medical Center, Dallas, TX, USA
| | - J M Mitchell
- Pathology, Baylor University Medical Center, Dallas, TX, USA
| | - K Wallis
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, TX, USA
| | - G B Klintmalm
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, TX, USA
| | - M Olausson
- Transplantation Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - L Johannesson
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, TX, USA
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11
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Warren AM, Testa G, Anthony T, McKenna GJ, Klintmalm GB, Wallis K, Koon EC, Gunby RT, Johannesson L. Live nondirected uterus donors: Psychological characteristics and motivation for donation. Am J Transplant 2018; 18:1122-1128. [PMID: 29364592 DOI: 10.1111/ajt.14670] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Revised: 01/16/2018] [Accepted: 01/18/2018] [Indexed: 01/25/2023]
Abstract
Emerging research suggests that uterus transplantation is a viable option for women without a uterus who want to become pregnant and carry a child to term. Currently, no knowledge exists regarding nondirected uterus donors. This study (NCT 02656550) explored the baseline psychological characteristics of nondirected uterus donors at a single study site. Of the 62 potential donors who underwent initial screening, 6 nondirected donors were chosen and participated in uterus donation. Participants received a comprehensive evaluation, which included clinical history and psychological assessments. The mean age of the donors was 42 years; most (83%) were white/not Hispanic, and all had a college degree. Current depression was reported by 2 participants, past depression was reported in 2 participants, and past anxiety was reported in 3 participants. Based on several different psychological measures, donors had a higher general well-being than the normative sample, and none of the participants' scores indicated psychological distress. All 6 women indicated that giving another woman an opportunity to carry her own child was a motivation for pursuing uterus donation. Further research on potential psychological motives and gains for the donor as well as long-term effects on donors is crucial for ethical practice.
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Affiliation(s)
- A M Warren
- Division of Trauma, Acute Care and Critical Care Surgery, Baylor University Medical Center, Dallas, TX, USA
| | - G Testa
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, TX, USA
| | - T Anthony
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, TX, USA
| | - G J McKenna
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, TX, USA
| | - G B Klintmalm
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, TX, USA
| | - K Wallis
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, TX, USA
| | - E C Koon
- Gynecologic Oncology/Obstetrics and Gynecology, Baylor University Medical Center, Dallas, TX, USA
| | - R T Gunby
- Obstetrics and Gynecology, Baylor University Medical Center, Dallas, TX, USA
| | - L Johannesson
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, TX, USA
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12
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Testa G, Anthony T, McKenna GJ, Koon EC, Wallis K, Klintmalm GB, Reese JC, Johannesson L. Deceased donor uterus retrieval: A novel technique and workflow. Am J Transplant 2018; 18:679-683. [PMID: 28858421 DOI: 10.1111/ajt.14476] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 08/03/2017] [Accepted: 08/18/2017] [Indexed: 01/25/2023]
Abstract
Uterus transplantation has proven successful when performed with a living donor. Subsequently, interest in the novel field of reproductive transplantation is growing. The procedure is still considered experimental, with fewer than 25 cases performed worldwide, and the techniques of both uterus procurement and transplantation are still developing. We detail a new approach to deceased donor uterus procurement. In contrast to reported techniques and our own initial experience, in which the deceased donor uterus was procured post cross-clamp and after other organs were procured, our approach now is to perform the uterus procurement prior to the procurement of other organs in a multiorgan donor and hence prior to cross-clamp. We describe our practical experience in developing and implementing the logistical workflow for deceased donor uterus procurement in a deceased multiorgan donor setting.
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Affiliation(s)
- G Testa
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, TX, USA
| | - T Anthony
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, TX, USA
| | - G J McKenna
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, TX, USA
| | - E C Koon
- Obstetrics and Gynecology/Gynecologic Oncology, Baylor University Medical Center, Dallas, TX, USA
| | - K Wallis
- Baylor Research Institute, Baylor University Medical Center, Dallas, TX, USA
| | - G B Klintmalm
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, TX, USA
| | - J C Reese
- Southwest Transplant Alliance, Dallas, TX, USA
| | - L Johannesson
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, TX, USA
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13
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Testa G, Koon EC, Johannesson L, McKenna GJ, Anthony T, Klintmalm GB, Gunby RT, Warren AM, Putman JM, dePrisco G, Mitchell JM, Wallis K, Olausson M. Living Donor Uterus Transplantation: A Single Center's Observations and Lessons Learned From Early Setbacks to Technical Success. Am J Transplant 2017; 17:2901-2910. [PMID: 28432742 DOI: 10.1111/ajt.14326] [Citation(s) in RCA: 114] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 04/04/2017] [Accepted: 04/13/2017] [Indexed: 01/25/2023]
Abstract
Uterus transplantation is a vascularized composite allograft transplantation. It allows women who do not have a uterus to become pregnant and deliver a baby. In this paper, we analyze the first five cases of living donor uterus transplantation performed in the United States. The first three recipients lost their uterus grafts at days 14, 12, and 6, respectively, after transplant. Vascular complications, related to both inflow and outflow problems, were identified as the primary reason for the graft losses. Two recipients, at 6 and 3 mo, respectively, after transplant, have functioning grafts with regular menstrual cycles. Ultimate success will be claimed only after a live birth. This paper is an in-depth analysis of evaluation, surgical technique, and follow-up of these five living donor uterus transplants. The lessons learned were instrumental in allowing us to evolve from failure to technical and functional success. We aim to share our conclusions and build on knowledge in the evolving field of uterus transplantation.
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Affiliation(s)
- G Testa
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, TX
| | - E C Koon
- Obstetrics and Gynecology/Gynecologic Oncology, Baylor University Medical Center, Dallas, TX
| | - L Johannesson
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, TX.,Obstetrics and Gynecology, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - G J McKenna
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, TX
| | - T Anthony
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, TX
| | - G B Klintmalm
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, TX
| | - R T Gunby
- Obstetrics and Gynecology, Baylor University Medical Center, Dallas, TX
| | - A M Warren
- Baylor Medical Psychology Consultants, Baylor University Medical Center, Dallas, TX
| | - J M Putman
- Obstetrics and Gynecology, Baylor University Medical Center, Dallas, TX
| | - G dePrisco
- Diagnostic Radiology, Baylor University Medical Center, Dallas, TX
| | - J M Mitchell
- Pathology, Baylor University Medical Center, Dallas, TX
| | - K Wallis
- Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, TX
| | - M Olausson
- Transplantation Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden
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14
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Kim PTW, Saracino G, Jennings L, Ramsay M, McKenna GJ, Testa G, Anthony TL, Onaca N, Ruiz RM, Goldstein RM, Levy MF, Klintmalm GB. Ratio of hepatic arterial flow to recipient body weight predicts biliary complications after deceased donor liver transplantation. HPB (Oxford) 2014; 16:1083-7. [PMID: 25041738 PMCID: PMC4253331 DOI: 10.1111/hpb.12318] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Accepted: 06/04/2014] [Indexed: 12/12/2022]
Abstract
OBJECTIVES Adequate hepatic arterial (HA) flow to the bile duct is essential in liver transplantation. This study was conducted to determine if the ratio of directly measured HA flow to weight is related to the occurrence of biliary complications after deceased donor liver transplantation. METHODS A retrospective review of 2684 liver transplants carried out over a 25-year period was performed using data sourced from a prospectively maintained database. Rates of biliary complications (biliary leaks, anastomotic and non-anastomotic strictures) were compared between two groups of patients with HA flow by body weight of, respectively, <5 ml/min/kg (n = 884) and ≥5 ml/min/kg (n = 1800). RESULTS Patients with a lower ratio of HA flow to weight had higher body weight (92 kg versus 76 kg; P < 0.001) and lower HA flow (350 ml/min versus 550 ml/min; P < 0.001). A lower ratio of HA flow to weight was associated with higher rates of biliary complications at 2 months, 6 months and 12 months (19.8%, 28.2% and 31.9% versus 14.8%, 22.4% and 25.8%, respectively; P < 0.001). CONCLUSIONS A ratio of HA flow to weight of < 5 ml/min/kg is associated with higher rates of biliary complications. This ratio may be a useful parameter for application in the prevention and early detection of biliary complications.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - Goran B Klintmalm
- Correspondence Goran B. Klintmalm, Simmons Transplant Institute, Baylor University Medical Center, 3410 Worth Street, Suite 950, Dallas, TX 75246, USA. Tel: + 1 214 820 1757. Fax: + 1 214 818 6491. E-mail:
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15
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O'Leary JG, McKenna GJ, Klintmalm GB, Davis GL. Effect of telaprevir on the pharmacokinetics of sirolimus in liver transplant recipients. Liver Transpl 2013; 19:463-5. [PMID: 23408534 DOI: 10.1002/lt.23623] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2013] [Accepted: 01/26/2013] [Indexed: 01/12/2023]
Affiliation(s)
- Jacqueline G. O'Leary
- Annette C. and Harold C. Simmons Transplant Institute; Baylor University Medical Center; Dallas; TX
| | - Gregory J. McKenna
- Annette C. and Harold C. Simmons Transplant Institute; Baylor University Medical Center; Dallas; TX
| | - Göran B. Klintmalm
- Annette C. and Harold C. Simmons Transplant Institute; Baylor University Medical Center; Dallas; TX
| | - Gary L. Davis
- Annette C. and Harold C. Simmons Transplant Institute; Baylor University Medical Center; Dallas; TX
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16
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17
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O'Sullivan CO, McKenna GJ, Burke FM. Trends in material choice for direct restorations by final year students from University College Cork 2004-2009. Eur J Prosthodont Restor Dent 2012; 20:31-34. [PMID: 22474934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Traditionally, undergraduate students in University College Cork (UCC) have been taught to use amalgam as the first choice material for direct restoration of posterior cavities. Since 2005 the use of composite resins has replaced amalgam as the first choice material. An audit was conducted of all direct restorations placed by final year students from UCC from 2004 until 2009. Results showed that over a six year period, final year UCC dental undergraduate students placed proportionately more direct composite resin restorations and significantly fewer amalgam restorations. The need for and undergraduate exposure to, provision of amalgam restorations may have to be revisited.
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18
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Sanchez EQ, Fischbach BV, Narasimhan G, Chinnakotla S, Nikitin D, Khan T, Randall HB, McKenna GJ, Ruiz R, Goldstein RM, Klintmalm GB, Levy MF. Use of two expanded-criteria-donor renal allografts in a single patient. Proc (Bayl Univ Med Cent) 2011; 20:240-3. [PMID: 17637877 PMCID: PMC1906572 DOI: 10.1080/08998280.2007.11928296] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Abstract
The disparity between the number of available renal donors and the number of patients on the transplant waiting list has prompted the use of expanded-criteria-donor (ECD) renal allografts to expand the donor pool. ECD allografts have shown good results in appropriately selected recipients, yet a number of renal allografts are still discarded. The use of dual renal transplantation may lower the discard rate. Additionally, the use of perfusion systems may improve acute tubular necrosis rates with these allografts. We report a successful case of a dual transplant with ECD allografts using a perfusion system. The biopsy appearance and the pump characteristics were suboptimal for these kidneys, making them unsuitable for single transplantation; however, the pair of transplanted kidneys provided increased nephron mass and functioned well. We recommend that ECD kidneys that are individually nontransplantable be evaluated for potential dual renal transplantation. Biopsy criteria and perfusion data guidelines must be developed to improve the success rates with ECD dual renal allografts. Finally, recipient selection is of utmost importance.
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19
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McKenna GJ, Trotter JF, Klintmalm E, Onaca N, Ruiz R, Jennings LW, Neri M, O'Leary JG, Davis GL, Levy MF, Goldstein RM, Klintmalm GB. Limiting hepatitis C virus progression in liver transplant recipients using sirolimus-based immunosuppression. Am J Transplant 2011; 11:2379-87. [PMID: 21967703 DOI: 10.1111/j.1600-6143.2011.03767.x] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Hepatitis C virus (HCV) causes progressive liver fibrosis in liver transplant recipients and is the principal cause of long-term allograft failure. The antifibrotic effects of sirolimus are seen in animal models but have not been described in liver transplant recipients. We reviewed 1274 liver recipients from 2002 to 2010 and identified a cohort of HCV recipients exposed to sirolimus as primary immunosuppression (SRL Cohort) and an HCV Control Group of recipients who had never received sirolimus. Yearly protocol biopsies were done recording fibrosis stage (METAVIR score) with biopsy compliance of >80% at both year one and two. In an intent-to-treat analysis, the SRL Cohort had significantly less advanced fibrosis (stage ≥2) compared to the HCV Control Group at year one (15.3% vs. 36.2%, p < 0.0001) and year two (30.1% vs. 50.5%, p = 0.001). Because sirolimus is sometimes discontinued for side effects, the SRL Cohort was subgroup stratified for sirolimus duration, showing progressively less fibrosis with longer sirolimus duration. Multivariate analysis demonstrated sirolimus as an independent predictor of minimal fibrosis at year one, and year two. This is the first study among liver transplant recipients with recurrent HCV to describe the positive impact of sirolimus in respect of reduced fibrosis extent and rate of progression.
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Affiliation(s)
- G J McKenna
- Surgery Medicine, Baylor Transplant Institute, Baylor University Medical Center, Dallas, TX, USA.
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20
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McKenna GJ, Trotter JF, Klintmalm E, Onaca N, Ruiz R, Jennings LW, Neri M, O'Leary JG, Davis GL, Levy MF, Goldstein RM, Klintmalm GB. Limiting hepatitis C virus progression in liver transplant recipients using sirolimus-based immunosuppression. Am J Transplant 2011. [PMID: 21967703 DOI: 10.1111/j.1600-6143.2011.03767] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Hepatitis C virus (HCV) causes progressive liver fibrosis in liver transplant recipients and is the principal cause of long-term allograft failure. The antifibrotic effects of sirolimus are seen in animal models but have not been described in liver transplant recipients. We reviewed 1274 liver recipients from 2002 to 2010 and identified a cohort of HCV recipients exposed to sirolimus as primary immunosuppression (SRL Cohort) and an HCV Control Group of recipients who had never received sirolimus. Yearly protocol biopsies were done recording fibrosis stage (METAVIR score) with biopsy compliance of >80% at both year one and two. In an intent-to-treat analysis, the SRL Cohort had significantly less advanced fibrosis (stage ≥2) compared to the HCV Control Group at year one (15.3% vs. 36.2%, p < 0.0001) and year two (30.1% vs. 50.5%, p = 0.001). Because sirolimus is sometimes discontinued for side effects, the SRL Cohort was subgroup stratified for sirolimus duration, showing progressively less fibrosis with longer sirolimus duration. Multivariate analysis demonstrated sirolimus as an independent predictor of minimal fibrosis at year one, and year two. This is the first study among liver transplant recipients with recurrent HCV to describe the positive impact of sirolimus in respect of reduced fibrosis extent and rate of progression.
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Affiliation(s)
- G J McKenna
- Surgery Medicine, Baylor Transplant Institute, Baylor University Medical Center, Dallas, TX, USA.
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21
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McKenna GJ, Trotter JF, Klintmalm E, Onaca N, Ruiz R, Jennings LW, Neri M, O'Leary JG, Davis GL, Levy MF, Goldstein RM, Klintmalm GB. Limiting hepatitis C virus progression in liver transplant recipients using sirolimus-based immunosuppression. Am J Transplant 2011. [PMID: 21967703 DOI: 10.1111/j.1600-6143.] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Hepatitis C virus (HCV) causes progressive liver fibrosis in liver transplant recipients and is the principal cause of long-term allograft failure. The antifibrotic effects of sirolimus are seen in animal models but have not been described in liver transplant recipients. We reviewed 1274 liver recipients from 2002 to 2010 and identified a cohort of HCV recipients exposed to sirolimus as primary immunosuppression (SRL Cohort) and an HCV Control Group of recipients who had never received sirolimus. Yearly protocol biopsies were done recording fibrosis stage (METAVIR score) with biopsy compliance of >80% at both year one and two. In an intent-to-treat analysis, the SRL Cohort had significantly less advanced fibrosis (stage ≥2) compared to the HCV Control Group at year one (15.3% vs. 36.2%, p < 0.0001) and year two (30.1% vs. 50.5%, p = 0.001). Because sirolimus is sometimes discontinued for side effects, the SRL Cohort was subgroup stratified for sirolimus duration, showing progressively less fibrosis with longer sirolimus duration. Multivariate analysis demonstrated sirolimus as an independent predictor of minimal fibrosis at year one, and year two. This is the first study among liver transplant recipients with recurrent HCV to describe the positive impact of sirolimus in respect of reduced fibrosis extent and rate of progression.
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Affiliation(s)
- G J McKenna
- Surgery Medicine, Baylor Transplant Institute, Baylor University Medical Center, Dallas, TX, USA.
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22
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McKenna GJ, Kim PTW, Mui ALF, Ong CJ, Rotstein OD, Warnock GL, Chung SW. Glutathione depletion of stimulator cells inhibits responder T-cell immunogenicity in vitro and prolongs allograft survival in vivo. Am J Surg 2006; 191:588-92. [PMID: 16647342 DOI: 10.1016/j.amjsurg.2006.02.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2005] [Revised: 01/17/2006] [Indexed: 11/25/2022]
Abstract
BACKGROUND Pretransplant donor-organ immunomodulation may attenuate allograft rejection by changing the redox state of donor cells. This study explored impact of donor-cell redox-state alteration by glutathione (GSH) depletion on graft immunogenicity. METHODS Splenic and heart endothelial cells from Balb/c mice were treated with diethylmaleate (a GSH-depleting agent) and/or lipopolysaccharide to assess the impact of GSH depletion on alloreactivity by mixed lymphocyte reaction, endothelial cell adhesion by T-cell adhesion assay, intracellular adhesion molecule-1 expression by reverse transcriptionase-polymerase chain reaction, and nuclear factor-kappa B upregulation by electrophoretic mobility shift assay. Heterotopic heart transplants were performed as in vivo correlate. RESULTS GSH depletion decreased endothelial cell and splenic cell alloreactivity, decreased endothelial cell intracellular adhesion molecule-1 expression through attenuation of nuclear factor-kappa B activity, decreased endothelial cell adhesion, and prolonged heterotopic heart transplant graft survival. CONCLUSIONS GSH depletion may represent a significant immunomodulator of donor antigenicity to prevent transplant rejection.
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Affiliation(s)
- Gregory J McKenna
- Department of Surgery, University of British Columbia, 3100-910 West 10th Avenue, Vancouver, BC, Canada, V5Z 4E3
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23
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McKenna GJ, Meneghetti A, Chen YL, Mui ALF, Ong C, Scudamore CH, McMaster WR, Owen DA, Chung SW. Predictive value of lymph node and tumor matrix metalloproteinase expression in the analysis of metastatic periampullary tumors. J Surg Oncol 2005; 90:239-46. [PMID: 15906368 DOI: 10.1002/jso.20258] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND AND OBJECTIVES Matrix metalloproteinases (MMP) are endogenous peptidases capable of degrading various components of the basement membrane. The ability of malignant epithelial cells to degrade extracellular matrix and basement membrane is an important step in the process of metastatic invasion. In this study, we prospectively compared the outcome of patients undergoing laparotomy for resection of periampullary malignancies with lymph node and tumor MMP expression to determine if there was a correlation between metalloproteinase expression and patient outcome. METHODS Sixteen patients undergoing operation were followed prospectively. Expression of MMP-2 and -9 and their inhibitors TIMP (tissue inhibitor of matrix metalloproteinase) -1 and -2 were measured in lymph node and tumor samples by semiquantitative PCR analysis. RESULTS All patients who died from their disease process had significantly greater MMP-2 expression in their lymph nodes relative to TIMP-2 expression. In contrast, patients with prolonged disease-free survival had decreased nodal MMP-2/TIMP-2 expression (P = 0.001). Patients with relatively higher MMP-2/TIMP-2 expression in their tumors also had a worse prognosis (P = 0.06). CONCLUSION The data demonstrate that the mRNA expression of MMPs and TIMPs in the draining lymph node of patients with periampullary adenocarcinomas may hold prognostic significance for patient survival. This prognostic information may be of use in patients when planning future adjuvant therapies.
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Affiliation(s)
- Gregory J McKenna
- Department of Surgery, Vancouver Hospital and Health Sciences Centre, University of British Columbia, Vancouver, British Columbia, Canada
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24
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Affiliation(s)
- W D Watson
- Department of Neurology, National Naval Medical Center, 8901 Wisconsin Ave., Bethesda, MD 20889-5600, USA.
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Asano TK, McLeod RS, Blitz M, Butts C, Kneteman N, Bigam D, Oosthuizen JFM, Phang PT, Gouthro D, Ravid A, Liu M, O'Connor BI, MacRae HM, Cohen Z, McLeod RS, Al-Obeed O, Penning J, Stern HS, Colquhoun P, Nogueras J, Dipasquale B, Petras J, Wexner S, Woodhouse S, Raval MJ, Heine JA, May GR, Bass S, Brown CJ, MacLean AR, Asano T, Cohen Z, MacRae HM, O'Connor BI, McLeod RS, Asano TK, Toma D, Stern HS, McLeod RS, Irshad K, Ghitulescu GA, Gordon PH, MacLean AR, Lilly L, Cohen Z, O'Connor B, McLeod RS, Ravid A, O'Connor BI, Liu M, MacRae HM, Cohen Z, McLeod RS, St Germaine RL, de Gara CJ, Fox R, Kenwell Z, Blitz S, Wong JT, Mc-Mulkin HM, Porter GA, Jayaraman S, Gray D, Burpee SE, Schlachta CM, Mamazza J, Pace K, Poulin EC, Freeman J, Tranqui P, Trottier D, Bodurtha A, Sarma A, Bheerappa N, Sastry RA, de Gara CJ, Hanson J, Hamilton S, Taylor MC, Haase E, Stevens J, Rigo V, Richards J, Bigam DL, Cheung PY, Burpee SE, Schlachta CM, Mamazza J, Pace K, Poulin EC, Grace DM, Gupta S, Sarma A, Bheerappa N, Radhakrishna P, Sastry RA, Malik S, Duffy P, Schulte P, Cameron R, Pace KT, Dyer S, Phan V, Poulin E, Schlachta C, Mamazza J, Stewart R, Honey RJ, Kanthan R, Kanthan SC, Jayaraman S, Aarts MA, Solomon MJ, McLeod RS, Ong S, Pitt D, Stephen W, Latulippe J, Girotti M, Bloom S, Pace K, Dyer S, Stewart R, Honey RJ, Poulin E, Schlachta C, Mamazza J, Furlan JC, Rosen IB, Asano TK, Haigh PI, McLeod RS, Al Saleh N, Taylor B, Karimuddin AA, Marschall J, McFadden A, Pollett WG, Dicks E, Tranqui P, Trottier D, Freeman J, Bodurtha A, Urbach DR, Bell CM, Austin PC, Cleary SP, Gyfe R, Greig P, Smith L, Mackenzie R, Strasberg S, Hanna S, Taylor B, Langer B, Gallinger S, Marschall J, Nechala P, Chibbar R, Colquhoun P, Zhou J, Lee TDG, Meneghetti AT, McKenna GJ, Owen D, Scudamore CH, McMaster RM, Chung SW, Aarts MA, Granton J, Cook DJ, Bohnen JMA, Marshall JC, Colquhoun P, Weiss E, Efron J, Nogueras J, Vernava A, Wexner S, Poulin EC, Schlachta CM, Burpee SE, Pace KT, Mamazza J, Rosen IB, Furlan JC, Charghi R, Schricker T, Backman S, Rouah F, Christou NV, Obayan A, Keith R, Juurlink BHJ, Skaro AI, Liwski RS, Zhou J, Lee TDG, Hirsch GM, Powers KA, Khadaroo RG, Papia G, Kapus A, Rotstein OD, Furlan JC, Rosen IB, Stratford AFC, George RL, VanManen L, Klassen DR, Feldman LS, Mayrand S, Mercier L, Stanbridge D, Fried GM, Nanji SA, Hancock WW, Anderson C, Shapiro AMJ, Butter A, Martins L, Taylor B, Ott MC, Rycroft K, Wall WJ, Burpee SE, Schlachta CM, Mamazza J, Pace K, Poulin EC, Taylor MC, Christou NV, Jarand J, Sylvestre JL, McLean APH, Behzadi A, Tan L, Unruh H, Brandt MG, Darling GE, Miller L, Seely AJE, Maziak DE, Gunning D, Do MT, Bukhari M, Shamji FM, Abdurahman A, Darling G, Ginsberg R, Johnston M, Waddell T, Keshavjee S, Cuccarolo G, Charyk-Stewart T, Inaba K, Malthaner R, Gray D, Girotti M, Grondin SC, Tutton SM, Sichlau MJ, Pozdol C, McDonough TJ, Masters GA, Ray DW, Liptay MJ. Abstracts of presentations to the Annual Meetings of the Canadian Society of Colon and Rectal Surgeons Canadian Association of General Surgeons Canadian Association of Thoracic Surgeons: Canadian Surgery Forum, London, Ont., Sept. 19 to 22, 2002. Can J Surg 2002; 45:3-26. [PMID: 37381180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/30/2023] Open
Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - D Pitt
- Ottawa Hospital, University of Ottawa, Ottawa, Ont
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McKenna GJ, Chen Y, Smith RM, Meneghetti A, Ong C, McMaster R, Scudamore CH, Chung SW. A role for matrix metalloproteinases and tumor host interaction in hepatocellular carcinomas. Am J Surg 2002; 183:588-94. [PMID: 12034400 DOI: 10.1016/s0002-9610(02)00833-4] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Hepatocellular carcinoma (HCC) occur in livers with injury-remodeling, accomplished by enzymes called matrix metalloproteinases (MMP). Metastasis involves basement membrane invasion also caused by MMP activity. Alterations in MMP expression and their endogenous inhibitor (TIMP) may factor in HCC metastasis. METHODS HCC specimens and lymph nodes (n = 7), and normal lymph tissue from organ donors (n = 8), were snap-frozen in liquid nitrogen and the mRNA precipitated. A series of reverse transcription-polymerase chain reactions (RT-PCR) were performed using MMP (MMP2, MMP7, MMP9) primers and TIMP (TIMP1, TIMP2) primers. These were semiquantitatively analyzed by comparing concentration with constitutive GADPH expression. RESULTS There is an increase in MMP2:TIMP2 mRNA expression ratio in the normal and tumor margin tissue compared to the tumor. There are increases in all MMP and TIMP mRNA expression (except TIMP1) and alterations in all of the MMP:TIMP expression ratios in the draining lymph node. CONCLUSIONS Alterations exist in MMP2:TIMP2: expression at the margin, and all of the MMPs in the draining lymph nodes. This likely reflects a host-tumor interaction that regulates tumor metastasis.
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Affiliation(s)
- Gregory J McKenna
- Department of Surgery, Vancouver Hospital and Health Sciences Centre, University of British Columbia, 910 West 10th Ave., Vancouver, British Columbia, Canada V5Z 4E3
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Abstract
INTRODUCTION Intrahepatic injection of alloantigen prolongs allograft survival and inhibits T-lymphocyte release of both IL-2 and IFN-gamma but not IL-4. This suggests that intrahepatic processing of antigen lead to a predominance of Th2 cell population with inhibition of Th1 cell type. This study examines the effects of hepatic nonparenchymal cells (NPCs) on T cell function and cytokine mRNA expression profiles. MATERIALS AND METHODS Following portal vein (p.v.) injection of allogeneic splenic mononuclear cells (SMNC) in mice, heterotopic cardiac allograft survival and donor-specific immune responses were assessed. The cytokine profiles were evaluated in heart grafts and spleens from transplanted mice, or in recipient lymphocytes stimulated in vitro with alloantigen. The immunoregulatory role of NPCs from p.v. injected mice was evaluated. RESULTS Transplanted mice with prolonged graft survival demonstrated increased IL-4, TGF-beta and IL-10 and/or decreased IFN-gamma and IL-2 mRNA expression within the spleen and the transplanted graft. This correlated with increased antigen-specific IL-4, IL-10 and TGF-beta expression in lymphocytes isolated from the p.v. injected mice. In mixed lymphocyte cultures using NPC from p.v. injected mice as regulatory cells, there was decreased proliferation of lymphocytes from the p.v. injected mice in response to allogeneic stimulation, associated with increased IL-4, TGF-beta and IL-10 production and decreased IFN-gamma and IL-2 production. The regulatory effects of the NPC was reversed by prostaglandin E inhibitor. CONCLUSIONS Interactions between allogeneic lymphocytes and NPCs results in an impaired Th1 response and preferential shift towards a Th2 cytokine response which may regulate allograft rejection.
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Affiliation(s)
- Yongliang Chen
- Department of Surgery, Vancouver Hospital and Health Sciences Centre, University of British Columbia, 3100-910 West 10th Avenue, Vancouver, BC, Canada V5Z 4E3
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Abstract
BACKGROUND Previous work has demonstrated prolonged allograft survival after donor-specific portal vein immunization before the transplantation. The purpose of this study was to examine the potential mechanism of portal vein-induced hyporesponsiveness after portal vein immunization with the soluble protein ovalbumin. METHODS Balb/c mice were immunized with a portal vein injection of ovalbumin. After the immunization, in vivo delayed-type hypersensitivity response and in vitro proliferative response of ovalbumin-specific T cells were assessed to determine host immune response. Type 1 (IL-2, IL-12, IFN-gamma) and type 2 (IL-4, TGF-beta) regulatory cytokines were assessed by semiquantitative reverse transcriptase polymerase chain reaction. Sera anti-ovalbumin IgG, IgG1, and IgG2a were measured by enzyme-linked immunosorbent assay, and the antigen-presenting ability of liver nonparenchymal cells (NPCs) was assessed by T-cell proliferation to ovalbumin in vitro. RESULTS There was significant inhibition of ovalbumin-specific delayed-type hypersensitivity and T-cell proliferation in portal vein-immunized mice compared with intraperitoneal-immunized or control mice. Reverse transcriptase polymerase chain reaction analysis results showed that lymphocytes from portal vein-immunized mice exhibited decreased type 1 and increased type 2 cytokine messenger RNA expression compared with intraperitoneal-immunized or control animals. The type 2 cytokine response of lymphocytes from ovalbumin portal vein-immunized mice correlated with increased sera ovalbumin-IgG1 and decreased IgG2a. The results of an antigen-presenting assay revealed that liver NPCs were deficient antigen-presenting cells compared with adherent cells from heart or spleen. CONCLUSIONS Processing of ovalbumin by hepatic NPCs results in hyporesponsiveness to ovalbumin by an impaired type 1 cytokine response and a preferential shift toward a type 2 cytokine response, possibly because of defective antigen presentation by hepatic NPCs. Intrahepatic processing of antigen may play an important role in the development of strategies to reduce host immunoreactivity against transplanted allografts.
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Affiliation(s)
- Y Chen
- Department of Surgery, Vancouver Hospital and Health Sciences Centre, University of British Columbia, Canada
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Smith RM, Chen Y, McKenna GJ, Ong C, Zhang R, Chung SW. Prolongation of heterotopic heart allograft survival by portal venous injection of alloantigen: the role of hepatic nonparenchymal cells. J INVEST SURG 2000; 13:241-6. [PMID: 11071558 DOI: 10.1080/08941930050206247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
The induction of immune hyporesponsiveness in transplantation is a complex interaction between the immune system and the alloantigen. The route by which an antigen is introduced to the immune system plays an important role in the immune response. Antigen delivered via the portal circulation has the ability to induce T-cell hyporesponsiveness. In this study we examined the mechanism responsible for the induction of hyporesponsiveness by assessing immune response following portal vein (pv) injection of donor alloantigen. C57B1/6 mice were immunized via pv with splenic mononuclear cells (SMNC) from BALB/c mice. The recipient immune response was assessed in vivo by murine heterotopic heart transplant survival. SMNC and hepatic nonparenchymal cells (NPC) were isolated from pv immunized animals and used as regulatory cells in a one-way mixed lymphocyte culture (MLC) as a measure of in vitro recipient responder SMNC proliferation. Survival of murine heterotopic heart transplants was prolonged following pv injection of alloantigen (p < .04 compared to nonimmunized or systemically immunized mice). Stimulation of responder SMNCs isolated from pv immunized mice resulted in an antigen-specific hyporesponsiveness (p < .05 compared with nonimmunized or systemically immunized mice). Cocultures of responder SMNCs from nonimmunized (naive) mice with hepatic NPC from previously pv immunized mice resulted in attenuation of T-cell proliferation in MLR following stimulation with donor alloantigen (p < .05 compared to coculture with NPC from nonimmunized mice or SMNC from pv immunized mice). These data would suggest that the hepatic NPC plays an important role in the regulation of the immune response. With further identification of cell subtypes responsible for induction of hyporesponsiveness, future therapies may be directed at these specific targets, thereby minimizing the harmful side effects of current immunosuppressive therapies.
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Affiliation(s)
- R M Smith
- Department of Surgery, Vancouver General Hospital, University of British Columbia, Canada
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Chen Y, McKenna GJ, Yoshida EM, Buczkowski AK, Scudamore CH, Erb SR, Steinbrecher UP, Chung SW. Assessment of immunologic status of liver transplant recipients by peripheral blood mononuclear cells in response to stimulation by donor alloantigen. Ann Surg 1999; 230:242-50. [PMID: 10450739 PMCID: PMC1420867 DOI: 10.1097/00000658-199908000-00015] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To determine whether there is a role for assessing peripheral blood mononuclear cell (PBMC) cytokine patterns as a means of measuring the immunologic and clinical status of liver transplant recipients. SUMMARY BACKGROUND DATA The role of assessing cytokine patterns in the prediction of clinical graft rejection or acceptance remains unclear. The purpose of this study was to examine the cytokine profiles of PBMC stimulated in vitro with donor alloantigen and to correlate prospectively the data with clinical assessment of graft status in orthotopic liver transplant (OLT) recipients. METHODS PBMCs from OLT recipients were examined for proliferation and cytokine mRNA expression after stimulation by donor alloantigen, third-party alloantigen, or phytohemagglutinin (PHA). mRNA extracted from PBMC was amplified by reverse transcriptase-polymerase chain reaction with oligospecific primer pairs for interleukin (IL)-2, IL-4, IL-6, IL-10, interferon (IFN) gamma, tumor necrosis factor (TNF) alpha and transforming growth factor (TGF) beta. Results were prospectively correlated with each patient's allograft status. RESULTS Increased IL-4 and TGF-beta and decreased IL-2, IFNgamma, and TNF-alpha mRNA expression by PBMCs in response to donor alloantigen stimulation predicted immunologic graft stability over a minimum 60-day interval compared with mRNA expression of PBMCs from patients with established rejection or those who experienced a rejection episode within a 30-day period (p < 0.05). Stimulation of recipient PBMCs with third-party alloantigens or PHA yielded similar but less specific results. PBMC proliferation to varying antigenic stimulation did not correlate with clinical graft status, nor did cytokine production by unstimulated PBMC. CONCLUSIONS Prospective assessment of cytokine expression by PBMC from OLT recipients in response to stimulation by donor alloantigen is helpful for predicting the clinical status of the allograft and may be useful in the development of more precise immunologic monitoring protocols.
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Affiliation(s)
- Y Chen
- Department of Surgery, Vancouver Hospital & Health Sciences Centre, University of British Columbia, Canada
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McKenna GJ, Chung SW, Gerrie B, Smith RM, Chen Y, Squires JA, Zielenska M. A rapid restriction fragment length polymorphism polymerase chain reaction-based diagnostic method for identification of T-cell lymphoproliferative disorders. J Surg Res 1999; 85:311-6. [PMID: 10423334 DOI: 10.1006/jsre.1999.5594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
BACKGROUND Identification of a clonal proliferation of lymphocytes is central to the diagnosis of lymphoma compared with a reactive lymphoproliferation. We propose a novel diagnostic technique based on restriction fragment length polymorphism (RFLP) of amplified polymerase chain reaction (PCR) products of the T-cell receptor -gamma (TCR-gamma) gene rearrangement to rapidly identify monoclonality in T-cell lymphomas and improve diagnosis of malignancy. MATERIALS AND METHODS DNA from peripheral blood mononuclear cells (PBMCs) of 10 healthy volunteers and 7 T-cell lymphoma patients were isolated and the TCR-gamma was amplified with consensus primers for the different variable (V) and joining (J) segments. Restriction digests were done using BstN1 and the fragments separated via gel electrophoresis. Verification was by Southern analysis. RESULTS Restriction digests of the 10 healthy controls show a characteristic nine-band digest pattern whereas the restriction digests of the 7 T-cell lymphomas each show altered banding patterns completely distinct from the normal nine-band pattern (Fisher exact test = 0.00005). Sensitivity assays demonstrate the test can detect clonal populations representing 2% of total. This method also enables identification of particular clonal populations. The entire procedure can be performed in one day, does not require radioactivity, and requires only small quantities of specimens. CONCLUSIONS This RFLP-PCR-based diagnostic method for T-cell lymphomas is specific, sensitive, efficient, and reproducible, and enables the identification of clonally expanded populations of T lymphocytes. It offers the ability to identify particular clonal populations, as with Southern analysis, combined with the benefits of a PCR method.
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Affiliation(s)
- G J McKenna
- Department of Surgery, University of British Columbia, Vancouver, Canada
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Brash DE, Rudolph JA, Simon JA, Lin A, McKenna GJ, Baden HP, Halperin AJ, Pontén J. A role for sunlight in skin cancer: UV-induced p53 mutations in squamous cell carcinoma. Proc Natl Acad Sci U S A 1991; 88:10124-8. [PMID: 1946433 PMCID: PMC52880 DOI: 10.1073/pnas.88.22.10124] [Citation(s) in RCA: 1223] [Impact Index Per Article: 37.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Sunlight is a carcinogen to which everyone is exposed. Its UV component is the major epidemiologic risk factor for squamous cell carcinoma of the skin. Of the multiple steps in tumor progression, those that are sunlight-related would be revealed if they contained mutations specific to UV. In a series of New England and Swedish patients, we find that 14/24 (58%) of invasive squamous cell carcinomas of the skin contain mutations in the p53 tumor suppressor gene, each altering the amino acid sequence. Involvement of UV light in these p53 mutations is indicated by the presence in three of the tumors of a CC----TT double-base change, which is only known to be induced by UV. UV is also implicated by a UV-like occurrence of mutations exclusively at dipyrimidine sites, including a high frequency of C----T substitutions. p53 mutations in internal malignancies do not show these UV-specific mutations. The dipyrimidine specificity also implicates dipyrimidine photoproducts containing cytosine as oncogenic photoproducts. We believe these results identify a carcinogen-related step in a gene involved in the subsequent human cancer.
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Affiliation(s)
- D E Brash
- Department of Therapeutic Radiology, Yale School of Medicine, New Haven, CT 06510
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Abstract
The literature reporting on aspects of ego functioning and psychopathology among narcotics and polydrug dependent individuals is reviewed. Data are presented which indicate impairment in ego functioning and evidence of considerable psychopathology in three groups of drug-dependent individuals entering an inpatient detoxification/treatment unit. The data support the view that drug misuse of any sort does not result in a homogeneous group. The Psychiatric Status Schedule of Spitzer and Endicott was the instrument used in gathering the data. Recommendations for discriminate thinking in diagnostic evaluation and treatment planning for any drug-dependent individuals are made.
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Mirin SM, McKenna GJ. Combat zone adjustment: the role of marihuana test. Mil Med 1975; 140:482-3. [PMID: 806841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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