1
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Li Z, Rammohan A, Gunasekaran V, Hong S, Chih-Yi Chen I, Kim J, Hervera Marquez KA, Hsu SC, Kirimker EO, Akamatsu N, Shaked O, Finotti M, Yeow M, Genedy L, Dutkowski P, Nadalin S, Boehnert MU, Polak WG, Bonney GK, Mathur A, Samstein B, Emond JC, Testa G, Olthoff KM, Rosen CB, Heimbach JK, Taner T, Wong TC, Lo CM, Hasegawa K, Balci D, Cattral M, Sapisochin G, Selzner N, Jeng LB, Broering D, Joh JW, Chen CL, Suh KS, Rela M, Clavien PA. Biliary complications after adult-to-adult living-donor liver transplantation: An international multicenter study of 3633 cases. Am J Transplant 2024:S1600-6135(24)00165-5. [PMID: 38428639 DOI: 10.1016/j.ajt.2024.02.023] [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] [Received: 09/04/2023] [Revised: 02/22/2024] [Accepted: 02/22/2024] [Indexed: 03/03/2024]
Abstract
In living-donor liver transplantation, biliary complications including bile leaks and biliary anastomotic strictures remain significant challenges, with incidences varying across different centers. This multicentric retrospective study (2016-2020) included 3633 adult patients from 18 centers and aimed to identify risk factors for these biliary complications and their impact on patient survival. Incidences of bile leaks and biliary strictures were 11.4% and 20.6%, respectively. Key risk factors for bile leaks included multiple bile duct anastomoses (odds ratio, [OR] 1.8), Roux-en-Y hepaticojejunostomy (OR, 1.4), and a history of major abdominal surgery (OR, 1.4). For biliary anastomotic strictures, risk factors were ABO incompatibility (OR, 1.4), blood loss >1 L (OR, 1.4), and previous abdominal surgery (OR, 1.7). Patients experiencing biliary complications had extended hospital stays, increased incidence of major complications, and higher comprehensive complication index scores. The impact on graft survival became evident after accounting for immortal time bias using time-dependent covariate survival analysis. Bile leaks and biliary anastomotic strictures were associated with adjusted hazard ratios of 1.7 and 1.8 for graft survival, respectively. The study underscores the importance of minimizing these risks through careful donor selection and preoperative planning, as biliary complications significantly affect graft survival, despite the availability of effective treatments.
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Affiliation(s)
- Zhihao Li
- Department of Surgery and Transplantation, Swiss HPB Center, University Hospital Zurich, Switzerland; Multi-Organ Transplant Program, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Ashwin Rammohan
- The Institute of Liver Disease and Transplantation, Dr. Rela Institute and Medical Centre, Chennai, India
| | - Vasanthakumar Gunasekaran
- The Institute of Liver Disease and Transplantation, Dr. Rela Institute and Medical Centre, Chennai, India
| | - Suyoung Hong
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea
| | - Itsuko Chih-Yi Chen
- Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
| | - Jongman Kim
- Department of Surgery, Samsung Medical Center, Seoul, South Korea
| | - Kris Ann Hervera Marquez
- Organ Transplant Center of Excellence, King Faisal Specialist Hospital & Research Centre, Riyadh, Saudi Arabia
| | - Shih-Chao Hsu
- Organ Transplantation Center, China Medical University Hospital, Taichung, Taiwan
| | | | - Nobuhisa Akamatsu
- Artificial Organ and Transplantation Division and Hepato-Biliary-Pancreatic Surgery, University of Tokyo, Tokyo, Japan
| | - Oren Shaked
- Division of Transplantation, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Michele Finotti
- Division of Abdominal Transplantation, Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas, USA
| | - Marcus Yeow
- Division of Hepatobiliary, Pancreatic Surgery and Liver Transplantation, University Surgical Cluster, National University Health System, Singapore
| | - Lara Genedy
- Department of General Visceral and Transplant Surgery, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Philipp Dutkowski
- Department of Surgery and Transplantation, Swiss HPB Center, University Hospital Zurich, Switzerland
| | - Silvio Nadalin
- Department of General Visceral and Transplant Surgery, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Markus U Boehnert
- Department of Surgery, Division of HPB & Transplant Surgery, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Wojciech G Polak
- Department of Surgery, Division of HPB & Transplant Surgery, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Glenn K Bonney
- Division of Hepatobiliary, Pancreatic Surgery and Liver Transplantation, University Surgical Cluster, National University Health System, Singapore
| | - Abhishek Mathur
- Liver and Abdominal Transplant Surgery, Columbia University Irving Medical Center, New York, New York, USA
| | - Benjamin Samstein
- Liver and Abdominal Transplant Surgery, Columbia University Irving Medical Center, New York, New York, USA
| | - Jean C Emond
- Liver and Abdominal Transplant Surgery, Columbia University Irving Medical Center, New York, New York, USA
| | - Giuliano Testa
- Division of Abdominal Transplantation, Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, Texas, USA
| | - Kim M Olthoff
- Division of Transplantation, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Charles B Rosen
- Division of Transplantation Surgery, Department of Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Julie K Heimbach
- Division of Transplantation Surgery, Department of Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Timucin Taner
- Division of Transplantation Surgery, Department of Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Tiffany Cl Wong
- Department of Surgery, The University of Hong Kong, Hong Kong, People's Republic of China
| | - Chung-Mau Lo
- Department of Surgery, The University of Hong Kong, Hong Kong, People's Republic of China
| | - Kiyoshi Hasegawa
- Artificial Organ and Transplantation Division and Hepato-Biliary-Pancreatic Surgery, University of Tokyo, Tokyo, Japan
| | - Deniz Balci
- Department of Surgery, Ankara University School of Medicine, Ankara, Turkey
| | - Mark Cattral
- Multi-Organ Transplant Program, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Gonzalo Sapisochin
- Multi-Organ Transplant Program, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Nazia Selzner
- Multi-Organ Transplant Program, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Long-Bin Jeng
- Organ Transplantation Center, China Medical University Hospital, Taichung, Taiwan
| | - Dieter Broering
- Organ Transplant Center of Excellence, King Faisal Specialist Hospital & Research Centre, Riyadh, Saudi Arabia
| | - Jae-Won Joh
- Department of Surgery, Samsung Medical Center, Seoul, South Korea
| | - Chao-Long Chen
- Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
| | - Kyung-Suk Suh
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea
| | - Mohamed Rela
- The Institute of Liver Disease and Transplantation, Dr. Rela Institute and Medical Centre, Chennai, India
| | - Pierre-Alain Clavien
- Department of Surgery and Transplantation, Swiss HPB Center, University Hospital Zurich, Switzerland.
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2
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Li Z, Rammohan A, Gunasekaran V, Hong S, Chen ICY, Kim J, Hervera Marquez KA, Hsu SC, Kirimker EO, Akamatsu N, Shaked O, Finotti M, Yeow M, Genedy L, Dutkowski P, Nadalin S, Boehnert MU, Polak WG, Bonney GK, Mathur A, Samstein B, Emond JC, Testa G, Olthoff KM, Rosen CB, Heimbach JK, Taner T, Wong TC, Lo CM, Hasegawa K, Balci D, Cattral M, Sapisochin G, Selzner N, Bin Jeng L, Broering D, Joh JW, Chen CL, Suk KS, Rela M, Clavien PA. Novel Benchmark for Adult-to-Adult Living-donor Liver Transplantation: Integrating Eastern and Western Experiences. Ann Surg 2023; 278:798-806. [PMID: 37477016 DOI: 10.1097/sla.0000000000006038] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [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: 07/22/2023]
Abstract
OBJECTIVE To define benchmark values for adult-to-adult living-donor liver transplantation (LDLT). BACKGROUND LDLT utilizes living-donor hemiliver grafts to expand the donor pool and reduce waitlist mortality. Although references have been established for donor hepatectomy, no such information exists for recipients to enable conclusive quality and comparative assessments. METHODS Patients undergoing LDLT were analyzed in 15 high-volume centers (≥10 cases/year) from 3 continents over 5 years (2016-2020), with a minimum follow-up of 1 year. Benchmark criteria included a Model for End-stage Liver Disease ≤20, no portal vein thrombosis, no previous major abdominal surgery, no renal replacement therapy, no acute liver failure, and no intensive care unit admission. Benchmark cutoffs were derived from the 75th percentile of all centers' medians. RESULTS Of 3636 patients, 1864 (51%) qualified as benchmark cases. Benchmark cutoffs, including posttransplant dialysis (≤4%), primary nonfunction (≤0.9%), nonanastomotic strictures (≤0.2%), graft loss (≤7.7%), and redo-liver transplantation (LT) (≤3.6%), at 1-year were below the deceased donor LT benchmarks. Bile leak (≤12.4%), hepatic artery thrombosis (≤5.1%), and Comprehensive Complication Index (CCI ® ) (≤56) were above the deceased donor LT benchmarks, whereas mortality (≤9.1%) was comparable. The right hemiliver graft, compared with the left, was associated with a lower CCI ® score (34 vs 21, P < 0.001). Preservation of the middle hepatic vein with the right hemiliver graft had no impact neither on the recipient nor on the donor outcome. Asian centers outperformed other centers with CCI ® score (21 vs 47, P < 0.001), graft loss (3.0% vs 6.5%, P = 0.002), and redo-LT rates (1.0% vs 2.5%, P = 0.029). In contrast, non-benchmark low-volume centers displayed inferior outcomes, such as bile leak (15.2%), hepatic artery thrombosis (15.2%), or redo-LT (6.5%). CONCLUSIONS Benchmark LDLT offers a valuable alternative to reduce waitlist mortality. Exchange of expertise, public awareness, and centralization policy are, however, mandatory to achieve benchmark outcomes worldwide.
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Affiliation(s)
- Zhihao Li
- Department of Surgery and Transplantation, Swiss HPB Center, University Hospital Zurich, Switzerland
| | - Ashwin Rammohan
- The Institute of Liver Disease and Transplantation, Dr Rela Institute and Medical Centre, Chennai, TN, India
| | - Vasanthakumar Gunasekaran
- The Institute of Liver Disease and Transplantation, Dr Rela Institute and Medical Centre, Chennai, TN, India
| | - Suyoung Hong
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea
| | - Itsuko Chih-Yi Chen
- Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
| | - Jongman Kim
- Department of Surgery, Samsung Medical Center, Seoul, South Korea
| | - Kris Ann Hervera Marquez
- Organ Transplant Center of Excellence, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - Shih Chao Hsu
- Organ Transplantation Center, China Medical University Hospital, Taichung, Taiwan
| | | | - Nobuhisa Akamatsu
- Artificial Organ and Transplantation Division and Hepato-Biliary-Pancreatic Surgery, University of Tokyo, Tokyo, Japan
| | - Oren Shaked
- Division of Transplantation, University of Pennsylvania, Philadelphia, PA
| | - Michele Finotti
- Division of Abdominal Transplantation, Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, TX
| | - Marcus Yeow
- Division of Hepatobiliary, Pancreatic Surgery and Liver Transplantation, University Surgical Cluster, National University Health System, Singapore
| | - Lara Genedy
- Department of General Visceral and Transplant Surgery, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Philipp Dutkowski
- Department of Surgery and Transplantation, Swiss HPB Center, University Hospital Zurich, Switzerland
| | - Silvio Nadalin
- Department of General Visceral and Transplant Surgery, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Markus U Boehnert
- Department of Surgery, Division of HPB and Transplant Surgery, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Wojciech G Polak
- Department of Surgery, Division of HPB and Transplant Surgery, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Glenn K Bonney
- Division of Hepatobiliary, Pancreatic Surgery and Liver Transplantation, University Surgical Cluster, National University Health System, Singapore
| | - Abhishek Mathur
- Liver and Abdominal Transplant Surgery, Columbia University Irving Medical Center, New York, NY
| | - Benjamin Samstein
- Liver and Abdominal Transplant Surgery, Columbia University Irving Medical Center, New York, NY
| | - Jean C Emond
- Liver and Abdominal Transplant Surgery, Columbia University Irving Medical Center, New York, NY
| | - Giuliano Testa
- Division of Abdominal Transplantation, Annette C. and Harold C. Simmons Transplant Institute, Baylor University Medical Center, Dallas, TX
| | - Kim M Olthoff
- Division of Transplantation, University of Pennsylvania, Philadelphia, PA
| | - Charles B Rosen
- Department of Surgery, Division of Transplantation Surgery, Mayo Clinic, Rochester, MN
| | - Julie K Heimbach
- Department of Surgery, Division of Transplantation Surgery, Mayo Clinic, Rochester, MN
| | - Timucin Taner
- Department of Surgery, Division of Transplantation Surgery, Mayo Clinic, Rochester, MN
| | - Tiffany Cl Wong
- Department of Surgery, The University of Hong Kong, Hong Kong, People's Republic of China
| | - Chung-Mau Lo
- Department of Surgery, The University of Hong Kong, Hong Kong, People's Republic of China
| | - Kiyoshi Hasegawa
- Artificial Organ and Transplantation Division and Hepato-Biliary-Pancreatic Surgery, University of Tokyo, Tokyo, Japan
| | - Deniz Balci
- Department of Surgery, Ankara University School of Medicine, Ankara, Turkey
| | - Mark Cattral
- Multi-Organ Transplant Program, University Health Network, University of Toronto, Toronto, ON, Canada
| | - Gonzalo Sapisochin
- Multi-Organ Transplant Program, University Health Network, University of Toronto, Toronto, ON, Canada
| | - Nazia Selzner
- Multi-Organ Transplant Program, University Health Network, University of Toronto, Toronto, ON, Canada
| | - Long Bin Jeng
- Organ Transplantation Center, China Medical University Hospital, Taichung, Taiwan
| | - Dieter Broering
- Organ Transplant Center of Excellence, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - Jae-Won Joh
- Department of Surgery, Samsung Medical Center, Seoul, South Korea
| | - Chao-Long Chen
- Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
| | - Kyung-Suh Suk
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea
| | - Mohamed Rela
- The Institute of Liver Disease and Transplantation, Dr Rela Institute and Medical Centre, Chennai, TN, India
| | - Pierre-Alain Clavien
- Department of Surgery and Transplantation, Swiss HPB Center, University Hospital Zurich, Switzerland
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Freimer JW, Shaked O, Naqvi S, Sinnott-Armstrong N, Kathiria A, Garrido CM, Chen AF, Cortez JT, Greenleaf WJ, Pritchard JK, Marson A. Systematic discovery and perturbation of regulatory genes in human T cells reveals the architecture of immune networks. Nat Genet 2022; 54:1133-1144. [PMID: 35817986 PMCID: PMC10035359 DOI: 10.1038/s41588-022-01106-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [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] [Received: 07/02/2021] [Accepted: 05/26/2022] [Indexed: 12/14/2022]
Abstract
Gene regulatory networks ensure that important genes are expressed at precise levels. When gene expression is sufficiently perturbed, it can lead to disease. To understand how gene expression disruptions percolate through a network, we must first map connections between regulatory genes and their downstream targets. However, we lack comprehensive knowledge of the upstream regulators of most genes. Here, we developed an approach for systematic discovery of upstream regulators of critical immune factors-IL2RA, IL-2 and CTLA4-in primary human T cells. Then, we mapped the network of the target genes of these regulators and putative cis-regulatory elements using CRISPR perturbations, RNA-seq and ATAC-seq. These regulators form densely interconnected networks with extensive feedback loops. Furthermore, this network is enriched for immune-associated disease variants and genes. These results provide insight into how immune-associated disease genes are regulated in T cells and broader principles about the structure of human gene regulatory networks.
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Affiliation(s)
- Jacob W Freimer
- Department of Genetics, Stanford University, Stanford, CA, USA
- Gladstone-UCSF Institute of Genomic Immunology, San Francisco, CA, USA
- Department of Microbiology and Immunology, University of California San Francisco, San Francisco, CA, USA
| | - Oren Shaked
- Department of Microbiology and Immunology, University of California San Francisco, San Francisco, CA, USA
- Department of Surgery, University of California, San Francisco, CA, USA
| | - Sahin Naqvi
- Department of Genetics, Stanford University, Stanford, CA, USA
- Department of Chemical and Systems Biology, Stanford University School of Medicine, Stanford, USA
| | | | - Arwa Kathiria
- Department of Genetics, Stanford University, Stanford, CA, USA
| | | | - Amy F Chen
- Department of Genetics, Stanford University, Stanford, CA, USA
| | - Jessica T Cortez
- Department of Microbiology and Immunology, University of California San Francisco, San Francisco, CA, USA
| | - William J Greenleaf
- Department of Genetics, Stanford University, Stanford, CA, USA
- Department of Applied Physics, Stanford University, Stanford, CA, USA
- Chan Zuckerberg Biohub, San Francisco, CA, USA
| | - Jonathan K Pritchard
- Department of Genetics, Stanford University, Stanford, CA, USA.
- Department of Biology, Stanford University, Stanford, CA, USA.
| | - Alexander Marson
- Gladstone-UCSF Institute of Genomic Immunology, San Francisco, CA, USA.
- Department of Microbiology and Immunology, University of California San Francisco, San Francisco, CA, USA.
- Chan Zuckerberg Biohub, San Francisco, CA, USA.
- Department of Medicine, University of California San Francisco, San Francisco, CA, USA.
- Diabetes Center, University of California San Francisco, San Francisco, CA, USA.
- Innovative Genomics Institute, University of California Berkeley, Berkeley, CA, USA.
- UCSF Helen Diller Family Comprehensive Cancer Center, University of California San Francisco, San Francisco, CA, USA.
- Parker Institute for Cancer Immunotherapy, University of California San Francisco, San Francisco, CA, USA.
- Institute for Human Genetics, University of California San Francisco, San Francisco, CA, USA.
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4
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Shaked O, Demetris J, Levitsky J, Feng S, Loza BL, Punch J, Reyes J, Klintmalm G, Jackson W, DesMarais M, Sayre P, Shaked A, Reddy KR. Impact of Donor and Recipient Clinical Characteristics and Hepatic Histology on Steatosis/Fibrosis Following Liver Transplantation. Transplantation 2022; 106:106-116. [PMID: 33982909 PMCID: PMC8349377 DOI: 10.1097/tp.0000000000003681] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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: 01/03/2023]
Abstract
BACKGROUND Deceased donor and recipient predictors of posttransplant steatosis/steatohepatitis and fibrosis are not well known. Our aim was to evaluate the prevalence and assess donor and recipient predictors of steatosis, steatohepatitis, and fibrosis in liver transplantation recipients. METHODS Using the immune tolerance network A-WISH multicenter study (NCT00135694), donor and recipient demographic and clinical features were collected. Liver biopsies were taken from the donor liver at transplant, and from recipients per protocol and for-cause (ie, abnormal transaminases and to rule out rejection) and were interpreted by a central pathologist. RESULTS One hundred eighty-three paired donor/recipients liver biopsies at the time of transplant and posttransplant follow-up (median time 582 d; average time to last biopsies was 704 d [SD ± 402 d]) were analyzed. Donor steatosis did not influence recipient steatosis or fibrosis. Ten of 183 recipients had steatohepatitis on the last biopsy. Recipient body mass index at the time of liver biopsy was the most influential factor associated with posttransplant steatosis. Both donor and recipient metabolic syndrome features were not associated with graft steatosis. Untreated hepatitis C viral (HCV) infection was the most influential factor associated with the development of allograft fibrosis. CONCLUSIONS In a large experience evaluating paired donor and recipient characteristics, recipient body mass index at the time of liver biopsy was most significantly associated with posttransplant steatosis. Untreated HCV etiology influenced graft fibrosis. Thus relative to untreated HCV, hepatic fibrosis in those with steatosis/steatohepatitis is less common though long-term follow-up is needed to determine the course of posttransplant fibrosis. Emphasis on recipient weight control is essential.
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Affiliation(s)
- Oren Shaked
- Department of Surgery, University of California San Francisco, San Francisco, CA, USA
| | - Jack Demetris
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Josh Levitsky
- Division of Hepatology and Comprehensive Transplant Center, Northwestern Memorial Hospital, Chicago, IL, USA
| | - Sandy Feng
- Department of Surgery, University of California San Francisco, San Francisco, CA, USA
| | - Bao-Li Loza
- Department of Surgery, University of Pennsylvania, Philadelphia, PA, USA
| | - Jeff Punch
- Department of Surgery, University of Michigan, Ann Arbor, MI, USA
| | - Jorge Reyes
- Department of Surgery, University of Washington, Seattle, WA, USA
| | - Goran Klintmalm
- Baylor Simmons Transplant Institute, Baylor University Medical Center, Dallas, TX, USA
| | - Whitney Jackson
- Division of Gastroenterology and Hepatology, University of Colorado Denver, Aurora, CO, USA
| | | | - Peter Sayre
- Immune Tolerance Network, San Francisco, CA, USA
| | - Abraham Shaked
- Department of Surgery, University of Pennsylvania, Philadelphia, PA, USA
| | - K. Rajender Reddy
- Division of Gastroenterology and Hepatology, University of Pennsylvania, Philadelphia, PA, USA
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5
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Greenberg AL, Choi WT, Shaked O, Lee AT, Berrahou IK, Jacques LG, Lebares CC. Appendiceal neurofibroma in a patient with neurofibromatosis 1 and recurrent abdominal infections from ventriculoperitoneal shunt: a case report. J Surg Case Rep 2021; 2021:rjab115. [PMID: 33898000 PMCID: PMC8055177 DOI: 10.1093/jscr/rjab115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 03/26/2021] [Indexed: 11/16/2022] Open
Abstract
Appendiceal neurofibromas are exceedingly rare, with neither experimental nor observational data to support evidence-based diagnosis or treatment. We describe the case of a 52-year-old woman with neurofibromatosis 1 (NF1) complicated by aqueductal stenosis and resultant hydrocephalus needing a ventriculoperitoneal shunt (VPS). She presented to the emergency department with abdominal pain and was found to have abnormalities in the right hemiabdomen on cross-section imaging, also a Staphylococcus epidermidis growth at the distal portion of the VPS. She was initially treated with two rounds of intravenous antibiotics and VPS removal without improvement. She ultimately underwent an appendectomy, which revealed pathologic evidence of NF. The appendectomy was key to ruling out malignancy, addressing further symptoms and preventing future malignant transformation. This case highlights the importance of including appendiceal neurofibromas in the differential diagnoses of abdominal pain in patients with NF1.
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Affiliation(s)
- Anya L Greenberg
- School of Medicine, University of California, San Francisco, CA, USA
| | - Won-Tak Choi
- Department of Pathology, University of California, San Francisco, CA, USA
| | - Oren Shaked
- Department of Surgery, University of California, San Francisco, CA, USA
| | - Anthony T Lee
- Department of Neurological Surgery, University of California, San Francisco, CA, USA
| | - Iman K Berrahou
- Department of Obstetrics & Gynecology, University of California, San Francisco, CA, USA
| | - Line G Jacques
- Department of Neurological Surgery, University of California, San Francisco, CA, USA
| | - Carter C Lebares
- Department of Surgery, University of California, San Francisco, CA, USA
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6
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Gerber Y, Shaked O, Cohen G, Goshen A, Shimony T, Shohat T. 1445Physical activity and long-term mortality risk in Israeli older adults with and without cardiovascular disease. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0080] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 11/13/2022] Open
Abstract
Abstract
Background
Physical activity (PA) is a known protective factor among both general population and cardiovascular disease (CVD) patients. Yet, only a few cohort studies assessed the role of PA among older adult populations, characterized by high CVD prevalence rates.
Objectives
To evaluate the association between PA levels and all-cause mortality among Israeli older adults, and to assess whether it differs by baseline CVD status.
Methods
Participants were drawn from the National Health and Nutrition Survey of Older Adults Aged 65+ (“Mabat-Zahav”), conducted by the Israel Center for Disease Control between July 2005 and December 2006. Clinical, behavioral, and psychosocial data were collected via interview at study entry; a detailed PA questionnaire was also administered, through which participants were classified as sufficiently-active, insufficiently-active, and inactive, according to the American College of Sports Medicine classification. Mortality data (last follow-up, December 2016) were obtained from the Israeli Ministry of Health. Inverse probability weighted Cox proportional hazards models, based on propensity score, were constructed to assess the adjusted association between PA categories and mortality.
Results
Of the 1799 participants (mean [SD] age, 74.6 [6.2] years; 647 [36%] with a history of CVD), 559 (31%) were sufficiently-active, 506 (28%) were insufficiently-active and 734 (41%) were inactive. During a mean follow-up period of 9.0 years, 684 participants (38%) died. PA and mortality demonstrated an inverse dose-response relationship in both CVD and non-CVD groups, with no CVD-by-PA interaction detected on multiplicative-scale (P=0.70) or additive-scale (P=0.58). Notably, inactive non-CVD subjects had comparable risk to CVD patients who were sufficiently active (Figure).
Physical activity and mortality
Conclusions
In a nationally-based cohort of subjects aged 65 years and over, PA was inversely associated with mortality risk. CVD patients who preformed sufficient PA had a comparable mortality risk to inactive subjects free of CVD. These findings illustrate the importance of PA in the older adult population.
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Affiliation(s)
- Y Gerber
- Tel Aviv University, Tel Aviv, Israel
| | - O Shaked
- Tel Aviv University, Tel Aviv, Israel
| | - G Cohen
- Tel Aviv University, Tel Aviv, Israel
| | - A Goshen
- Tel Aviv University, Tel Aviv, Israel
| | - T Shimony
- Sheba Medical Center, ICDC, Ramat Gan, Israel
| | - T Shohat
- Sheba Medical Center, ICDC, Ramat Gan, Israel
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7
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Maymon R, Melcer Y, Pekar-Zlotin M, Shaked O, Cuckle H, Tovbin J. Bedside risk estimation of morbidly adherent placenta using simple calculator. Arch Gynecol Obstet 2017; 297:631-635. [DOI: 10.1007/s00404-017-4644-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Accepted: 12/22/2017] [Indexed: 11/30/2022]
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8
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Chen CW, Dumon KR, Shaked O, Acker MA, Atluri P, Dempsey DT. Non-cardiac surgery in patients with continuous-flow left ventricular assist devices: a single institutional experience. J Investig Med 2017; 65:912-918. [DOI: 10.1136/jim-2016-000297] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/22/2017] [Indexed: 11/04/2022]
Abstract
With improvements in life expectancy for patients with continuous-flow left ventricular assist devices (LVADs), non-cardiac surgeons will increasingly encounter surgical problems in this population. 209 patients underwent LVAD placement between 10/1/2007 and 6/1/2015 at a single institution. Survival was compared between patients who had non-cardiac surgery (NCS) during the initial LVAD implantation hospitalization (n=36) and those who had NCS only in subsequent hospitalizations (n=33). Postoperative complication rates were examined. Index admission NCS was associated with lower 5-year survival compared with subsequent admission NCS (27.1% vs 39.4%, p=0.017). In subsequent admissions, the risks of bleeding and infectious complications were the same for elective or urgent NCS, but the risk of death was higher in the urgent surgery group. We conclude that elective NCS can be performed with low risk of death or LVAD dysfunction after sufficient recovery of patients from LVAD implantation.
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Shaked O, Gonzalez A, Bahirwani R, Furth E, Siegelman E, Shaked A, Olthoff K, Reddy KR. Donor hemosiderosis does not affect liver function and regeneration in the setting of living donor liver transplantation. Am J Transplant 2014; 14:216-20. [PMID: 24354876 DOI: 10.1111/ajt.12504] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [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: 07/01/2013] [Revised: 09/03/2013] [Accepted: 09/10/2013] [Indexed: 01/25/2023]
Abstract
Living donor liver transplantation (LDLT) demands a careful assessment of abnormal findings discovered during the evaluation process to determine if there will be any potential risks to the donor or recipient. Varying degrees of elevated hepatic iron levels are not uncommonly seen in otherwise healthy individuals. We questioned whether mild expression of hemosiderin deposition presents a safety concern when considering outcomes of living donation for both the donor and the recipient. We report on three LDLT patients who were found to have low- to moderate-grade hemosiderin deposition on liver biopsy. All other aspects of their evaluation proved satisfactory, and the decision was made to proceed with donation. There were no significant complications in the donors, and all demonstrated complete normalization of liver function postoperatively, with appropriate parenchymal regeneration. The recipients also had unremarkable postoperative recovery. We conclude that these individuals can be considered as potential donors after careful evaluation.
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Affiliation(s)
- O Shaked
- Department of Surgery, Division of Transplantation, Hospital of the University of Pennsylvania, Philadelphia, PA
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Engelhard D, Weinberg M, Or R, Shaked O, Naparstek E, Haikin H, Slavin S, Sarov I. Immunoglobulins A, G, and M to cytomegalovirus during recurrent infection in recipients of allogeneic bone marrow transplantation. J Infect Dis 1991; 163:628-30. [PMID: 1847402 DOI: 10.1093/infdis/163.3.628] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [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: 12/29/2022] Open
Abstract
Occurrence and significance of specific IgA and IgM to cytomegalovirus (CMV) in recurrent CMV infection was evaluated in 21 allogeneic T lymphocyte-depleted bone marrow transplantation (BMT) recipients who had been previously CMV seropositive. Of 17 patients with CMV infection, viruria was detected in 94%, CMV-specific IgA in 88% and IgM in 76%, and a fourfold rise in IgG in 65%. The median time between BMT and detection of viruria was 69 days, of IgA 70, of IgM 62, and of IgG 88 days. The IgM and IgA responses lasted for 14 and 30 days (median time), whereas high IgG titers persisted. Twelve patients developed CMV disease; in these the appearance of viruria, IgA, and IgM preceded the rise of IgG (P less than .02). CMV-specific IgA and IgM are valuable diagnostic tools in BMT recipients with recurrent CMV infection.
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Affiliation(s)
- D Engelhard
- Department of Pediatrics, Hadassah University Hospital, Jerusalem, Israel
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Elsana S, Friedman M, Friling R, Sarov B, Shaked O, Yassur Y, Sarov I. The local and serum immune response to chlamydia in paratrachoma infections. ACTA ACUST UNITED AC 1990. [DOI: 10.1016/0888-0786(90)90005-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Abstract
The accuracy of single serovar (L2) inclusion immunoperoxidase assay (IPA) to show serum IgG and IgA antibodies specific to chlamydiae was compared with culture for Chlamydia trachomatis to diagnose chlamydial infection in 73 men with acute urethritis. C trachomatis only was isolated from 18 (25%), Neisseria gonorrhoeae only from 17 (23%), and both organisms from six (8%). Thus 24 (33%) yielded chlamydiae. Assays based on IgG antibodies to chlamydiae at a titre of 1/64 or more showed high sensitivity (96%) and a good negative predictive value (80%), but low specificity (13%) and agreement (48%) compared with culture. IgG antibodies to chlamydiae at a titre of 1/128 or more showed lower sensitivity (75%) but higher specificity (72%), negative predictive value (79%), and agreement (73%). IgA antibodies to chlamydiae at a titre of 1/8 or more showed a sensitivity of 88%, specificity of 72%, negative predictive value of 88%, and agreement of 79%. An appreciable (fourfold or more) decrease in IgA and IgG titres was observed in most (10) of the 15 men from whom second blood samples were obtained one to two years after treatment. Measuring specific IgA and IgG antibodies to chlamydiae by IPA may serve as a useful complementary test for diagnosing and following up patients with urethritis.
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Affiliation(s)
- Z J Hagay
- Division of Obstetrics and Gynecology, Ben-Gurion University of the Negev, Beer-Sheva, Israel
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