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Rawashdeh B, Bell R, Hakeem A, Prasad R. Liver transplantation as an alternative for the treatment of non-resectable liver colorectal cancer: Advancing the therapeutic algorithm. Hepatobiliary Pancreat Dis Int 2024; 23:154-159. [PMID: 38182479 DOI: 10.1016/j.hbpd.2023.12.002] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 12/28/2023] [Indexed: 01/07/2024]
Abstract
Colorectal cancer is a leading cause of cancer-related mortality, with nearly half of the affected patients developing liver metastases. For three decades, liver resection (LR) has been the primary curative strategy, yet its applicability is limited to about 20% of cases. Liver transplantation (LT) for unresectable metastases was attempted unsuccessfully in the 1990s, with high rates of perioperative death and recurrence. There is now more interest in this strategy due to improvements in systemic therapies and surgical techniques. A significant study conducted by the Oslo group showed that patients receiving liver transplants had a 60% chance of survival after five years. Significantly better results have been achieved by using advanced imaging for risk stratification and further refining selection criteria, especially in the Norvegian SECA trials. This review carefully charts the development and history of LT as a treatment option for colorectal cancer liver metastases. The revolutionary path from the early days of exploratory surgery to the current situation of cautious optimism is traced, highlighting the critical clinical developments and improved patient selection standards that have made LT a potentially curative treatment for such challenging very well selected cases.
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Affiliation(s)
- Badi Rawashdeh
- Division of Transplant Surgery, Department of General Surgery, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
| | | | | | - Raj Prasad
- Division of Transplant Surgery, Department of General Surgery, Medical College of Wisconsin, Milwaukee, WI, 53226, USA.
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Ratti F, Marino R, Olthof PB, Pratschke J, Erdmann JI, Neumann UP, Prasad R, Jarnagin WR, Schnitzbauer AA, Cescon M, Guglielmi A, Lang H, Nadalin S, Topal B, Maithel SK, Hoogwater FJH, Alikhanov R, Troisi R, Sparrelid E, Roberts KJ, Malagò M, Hagendoorn J, Malik HZ, Olde Damink SWM, Kazemier G, Schadde E, Charco R, de Reuver PR, Groot Koerkamp B, Aldrighetti L. Predicting futility of upfront surgery in perihilar cholangiocarcinoma: Machine learning analytics model to optimize treatment allocation. Hepatology 2024; 79:341-354. [PMID: 37530544 DOI: 10.1097/hep.0000000000000554] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [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: 05/21/2023] [Accepted: 06/27/2023] [Indexed: 08/03/2023]
Abstract
BACKGROUND While resection remains the only curative option for perihilar cholangiocarcinoma, it is well known that such surgery is associated with a high risk of morbidity and mortality. Nevertheless, beyond facing life-threatening complications, patients may also develop early disease recurrence, defining a "futile" outcome in perihilar cholangiocarcinoma surgery. The aim of this study is to predict the high-risk category (futile group) where surgical benefits are reversed and alternative treatments may be considered. METHODS The study cohort included prospectively maintained data from 27 Western tertiary referral centers: the population was divided into a development and a validation cohort. The Framingham Heart Study methodology was used to develop a preoperative scoring system predicting the "futile" outcome. RESULTS A total of 2271 cases were analyzed: among them, 309 were classified within the "futile group" (13.6%). American Society of Anesthesiology (ASA) score ≥ 3 (OR 1.60; p = 0.005), bilirubin at diagnosis ≥50 mmol/L (OR 1.50; p = 0.025), Ca 19-9 ≥ 100 U/mL (OR 1.73; p = 0.013), preoperative cholangitis (OR 1.75; p = 0.002), portal vein involvement (OR 1.61; p = 0.020), tumor diameter ≥3 cm (OR 1.76; p < 0.001), and left-sided resection (OR 2.00; p < 0.001) were identified as independent predictors of futility. The point system developed, defined three (ie, low, intermediate, and high) risk classes, which showed good accuracy (AUC 0.755) when tested on the validation cohort. CONCLUSIONS The possibility to accurately estimate, through a point system, the risk of severe postoperative morbidity and early recurrence, could be helpful in defining the best management strategy (surgery vs. nonsurgical treatments) according to preoperative features.
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Affiliation(s)
- Francesca Ratti
- Hepatobiliary Surgery Division, IRCCS Ospedale San Raffaele, Via Olgettina 60, Milano, Italy
| | - Rebecca Marino
- Hepatobiliary Surgery Division, IRCCS Ospedale San Raffaele, Via Olgettina 60, Milano, Italy
| | - Pim B Olthof
- Department of Surgery, Division of HPB and Transplant Surgery, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Johann Pratschke
- Department of Surgery, Charité-Universitätsmedizin, Berlin, Germany
| | - Joris I Erdmann
- Department of Surgery, Cancer Center Amsterdam, Amsterdam UMC, University of Amsterdam, The Netherlands
| | - Ulf P Neumann
- Department of General, Gastrointestinal, Hepatobiliary and Transplant Surgery, RWTH Aachen University Hospital, Aachen, Germany
- Department of Surgery, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Raj Prasad
- Department of Hepatobiliary and Liver Transplant Surgery, Division of Surgery, St James's University Hospital, Leeds, United Kingdom
| | - William R Jarnagin
- Hepatopancreatobiliary Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Andreas A Schnitzbauer
- Department of General and Visceral Surgery, University Hospital, Goethe University, Frankfurt, Germany
| | - Matteo Cescon
- Department of General Surgery and Transplantation, IRCCS, Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Alfredo Guglielmi
- Unit of General and Hepatobiliary Surgery, Department of Surgical Sciences, Dentistry, Gynecology and Pediatrics, University of Verona, Verona, Italy
| | - Hauke Lang
- Department of General, Visceral and Transplant Surgery, University Hospital Mainz, Mainz, Germany
| | - Silvio Nadalin
- Department of General and Transplant Surgery, University Hospital Tübingen, Tübingen, Germany
| | - Baki Topal
- Department of Abdominal Surgery, University Hospitals Gasthuisberg Leuven and KU Leuven, Leuven, Belgium
| | - Shishir K Maithel
- Division of Surgical Oncology, Department of Surgery, Winship Cancer Institute, Emory University, Atlanta, GA
| | - Frederik J H Hoogwater
- Department of Surgery, Section of Hepatobiliary Surgery & Liver Transplantation, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Ruslan Alikhanov
- Department of Liver and Pancreatic Surgery, Moscow Clinical Scientific Center, Russia
| | - Roberto Troisi
- Department of Clinical Medicine and Surgery, Division of Hepato-Bilio-Pancreatic, Minimally Invasive and Robotic Surgery, Federico II University Hospital, Naples, Italy
| | - Ernesto Sparrelid
- Department of Clinical Science, Intervention and Technology (CLINTEC), Division of Surgery, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Keith J Roberts
- Department of Surgery, University Hospital Birmingham, Birmingham, United Kingdom
| | - Massimo Malagò
- Department of HPB- and Liver Transplantation Surgery, University College London, Royal Free Hospitals, London, United Kingdom
| | - Jeroen Hagendoorn
- Department of Surgery, Regional Academic Cancer Centre Utrecht, St Antonius Hospital, Nieuwegein and University Medical Centre Utrecht, Utrecht, The Netherlands
| | - Hassan Z Malik
- Department of Hepatobiliary Surgery, Aintree University Hospital, Liverpool University Hospitals, NHS Foundation Trust, Liverpool, United Kingdom
| | - Steven W M Olde Damink
- Department of General, Gastrointestinal, Hepatobiliary and Transplant Surgery, RWTH Aachen University Hospital, Aachen, Germany
- Department of Surgery, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Geert Kazemier
- Department of Surgery, Cancer Center Amsterdam, Amsterdam UMC, VU University, Amsterdam, The Netherlands
| | - Erik Schadde
- Department of Surgery, Cantonal Hospital Winterthur, Zurich, Switzerland
| | - Ramon Charco
- Department of HBP Surgery and Transplantation, Hospital Universitario Vall d'Hebron, Universidad Autónoma de Barcelona, Spain
| | - Philip R de Reuver
- Department of Surgery, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Bas Groot Koerkamp
- Department of Surgery, Division of HPB and Transplant Surgery, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Luca Aldrighetti
- Hepatobiliary Surgery Division, IRCCS Ospedale San Raffaele, Via Olgettina 60, Milano, Italy
- Faculty of Medicine, University Vita-Salute San Raffaele, Milan, Italy
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Rawashdeh B, Kim J, Prasad R, Cooper M. A Global Overview on the Evolution, Debate, and Research Output on Liver Transplant Perfusion Machines. EXP CLIN TRANSPLANT 2024; 22:35-42. [PMID: 38284373 DOI: 10.6002/ect.2023.0180] [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: 01/30/2024]
Abstract
OBJECTIVES Machine perfusion of liver grafts has gained popularity for its abilities to preserve liver grafts,reduce cold storage damage, and evaluate graft viability before transplant. However, debate persists regarding the optimal solutions, logistics, and biomarkers for assessing graft quality. To shed light on the lengthy debates surrounding the use of machine perfusion in liver graft preservation,this study utilized bibliometric analysis to evaluate the status and development trends of main research areas. MATERIALS AND METHODS On December 10th, 2022, we conducted a literature search using the Web of Science database to identify articles related to liver machine perfusion. The search included only original studies and reviews and excluded meeting abstracts, letters, notes, editorials, short surveys, book chapters, and errata. We identified the number of citations and encompassed various aspects, such as annual trends, countries, institutions, authors, journals, and key words. We used VOSviewer version 1.6.18 to generate tables and figures. RESULTS After manually removing irrelevant papers, we included 264 articles (89 reviews; remaining were original studies). The articles were cited 5743 times, averaging 21.92 per article. We found that the United Kingdom (n = 76) was the country that produced the most articles,followed by theUnited States (66 articles). Most papers in our search were published in Liver Transplantation (n = 31) and Transplantation (n = 16). CONCLUSIONS Bibliometric analysis provided insights into debates and advancements in liver graft preservation using machine perfusion. The analysis showed leading countries and key research areas in the field. This overview serves as a valuable resource for researchers, offering a foundation for further exploration and guiding future investigations in the field of machine perfusion for liver graft preservation.
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Affiliation(s)
- Badi Rawashdeh
- From the Division of Transplant Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
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Rawashdeh B, AlRyalat SA, Abuassi M, Prasad R, Cooper M. Unveiling transplantation research productivity of United States: A bibliometric analysis. World J Transplant 2023; 13:391-402. [PMID: 38174148 PMCID: PMC10758679 DOI: 10.5500/wjt.v13.i6.391] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 09/11/2023] [Accepted: 09/22/2023] [Indexed: 12/15/2023] Open
Abstract
BACKGROUND The United States has witnessed significant advancements in the field of organ transplantation over the course of the last five decades, as demonstrated by a notable increase in the quantity of academic research. The presence of a highly dynamic research environment necessitates continuous evaluations to maintain the integrity and progress of the field. AIM To evaluate the total output and thematic emphasis of transplant research conducted in the United States. METHODS On January 10, 2023, we conducted a bibliometric search of United States research output in transplantation journals from the Web of Science database's Science Citation Index Expanded. We excluded editorials, meeting abstracts, and other non-article types. We analyzed annual trends, authors, institutions, articles, keywords, and countries collaborating with the United States, using VOSviewer 1.6.18 to create figures and tables. RESULTS The United States published 25956 papers (3078 reviews and 22878 articles) representing 37.7% of the world's scientific output. Canada emerged as the top collaborator with the United States, co-authoring 1263 articles. Leading institutions in United States transplantation research were the University of Pittsburgh (1749 articles), Mayo Clinic (1605 articles), Harvard Medical School (1549 articles), and Johns Hopkins University (1280 articles). The top three keywords with over 2000 occurrences were "recipients," "survival," and "outcomes," indicating a focus on graft and recipient outcome markers by United States researchers. CONCLUSION Our findings demonstrate the United States leadership in organ transplantation research, contributing significantly to the global scientific output in this field. However, opportunities exist for fostering expansive partnerships, particularly with developing countries. This study provides valuable insights into the transplantation research landscape in the United States, emphasizing the importance of ongoing evaluations to maintain and propel advancements in this critical medical discipline. The results may facilitate future collaborations, knowledge exchange, and the pursuit of innovative solutions in the realm of organ transplantation.
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Affiliation(s)
- Badi Rawashdeh
- Department of Transplant Surgery, Medical College of Wisconsin, Milwaukee, WI 53202, United States
| | | | - Mohammad Abuassi
- Department of Internal Medicine, Jordan Hospital, Amman 00962, Jordan
| | - Raj Prasad
- Department of Transplant Surgery, Medical College of Wisconsin, Milwaukee, WI 53202, United States
| | - Matthew Cooper
- Department of Transplant Surgery, Medical College of Wisconsin, Milwaukee, WI 53202, United States
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Kirchner VA, Shankar S, Victor DW, Tanaka T, Goldaracena N, Troisi RI, Olthoff KM, Kim JM, Pomfret EA, Heaton N, Polak WG, Shukla A, Mohanka R, Balci D, Ghobrial M, Gupta S, Maluf D, Fung JJ, Eguchi S, Roberts J, Eghtesad B, Selzner M, Prasad R, Kasahara M, Egawa H, Lerut J, Broering D, Berenguer M, Cattral MS, Clavien PA, Chen CL, Shah SR, Zhu ZJ, Ascher N, Ikegami T, Bhangui P, Rammohan A, Emond JC, Rela M. Management of Established Small-for-size Syndrome in Post Living Donor Liver Transplantation: Medical, Radiological, and Surgical Interventions: Guidelines From the ILTS-iLDLT-LTSI Consensus Conference. Transplantation 2023; 107:2238-2246. [PMID: 37749813 DOI: 10.1097/tp.0000000000004771] [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: 09/27/2023]
Abstract
Small-for-size syndrome (SFSS) following living donor liver transplantation is a complication that can lead to devastating outcomes such as prolonged poor graft function and possibly graft loss. Because of the concern about the syndrome, some transplants of mismatched grafts may not be performed. Portal hyperperfusion of a small graft and hyperdynamic splanchnic circulation are recognized as main pathogenic factors for the syndrome. Management of established SFSS is guided by the severity of the presentation with the initial focus on pharmacological therapy to modulate portal flow and provide supportive care to the patient with the goal of facilitating graft regeneration and recovery. When medical management fails or condition progresses with impending dysfunction or even liver failure, interventional radiology (IR) and/or surgical interventions to reduce portal overperfusion should be considered. Although most patients have good outcomes with medical, IR, and/or surgical management that allow graft regeneration, the risk of graft loss increases dramatically in the setting of bilirubin >10 mg/dL and INR>1.6 on postoperative day 7 or isolated bilirubin >20 mg/dL on postoperative day 14. Retransplantation should be considered based on the overall clinical situation and the above postoperative laboratory parameters. The following recommendations focus on medical and IR/surgical management of SFSS as well as considerations and timing of retransplantation when other therapies fail.
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Affiliation(s)
- Varvara A Kirchner
- Division of Abdominal Transplantation, Department of Surgery, Stanford University School of Medicine, Palo Alto, CA
| | - Sadhana Shankar
- The Liver Unit, King's College Hospital, London, United Kingdom
| | - David W Victor
- Sherrie and Alan Conover Center for Liver Disease and Transplantation, Houston Methodist Hospital, Houston, TX
| | - Tomohiro Tanaka
- Department of Internal Medicine, Gastroenterology and Hepatology, University of Iowa, Iowa City, IA
| | - Nicolas Goldaracena
- Abdominal Organ Transplant and Hepatobiliary Surgery, University of Virginia Health System, Charlottesville, VA
| | - Roberto I Troisi
- Division of Hepato-Bilio-Pancreatic, Minimally Invasive and Robotic Surgery, Department of Public Health, Federico II University Hospital, Naples, Italy
| | - Kim M Olthoff
- Department of Surgery, Division of Transplant Surgery, Hospital of the University of Pennsylvania, Philadelphia, PA
| | - Jong Man Kim
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Elizabeth A Pomfret
- Division of Transplant Surgery, Department of Surgery, Children's Hospital Colorado, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Nigel Heaton
- The Institute of Liver Studies, King's College Hospital, London, United Kingdom
| | - Wojtek G Polak
- The Erasmus MC Transplant Institute, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Akash Shukla
- Department of Gastroenterology, Seth GS Medical College and KEM Hospital, Mumbai, India
| | - Ravi Mohanka
- Institute of Liver Disease, HPB Surgery and Transplant, Global Hospital, Mumbai, Maharashtra, India
| | - Deniz Balci
- Department of General Surgery and Organ Transplantation Bahcesehir University School of Medicine, Istanbul, Turkey
| | - Mark Ghobrial
- Sherrie and Alan Conover Center for Liver Disease and Transplantation, Houston Methodist Hospital, Houston, TX
| | - Subash Gupta
- Max Centre for Liver and Biliary Sciences, Max Saket Hospital, New Delhi, India
| | - Daniel Maluf
- Program in Transplantation, University of Maryland Medical Center, University of Maryland School of Medicine, Baltimore, MD
| | - John J Fung
- Department of Surgery, University of Chicago Medicine Transplant Institute, Chicago, IL
| | - Susumu Eguchi
- Department of Surgery, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - John Roberts
- Department of Surgery, University of California San Francisco Medical Center, San Francisco, CA
| | - Bijan Eghtesad
- Digestive Disease and Surgery Institute, Cleveland Clinic; Clinical Assistant Professor, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, OH
| | - Markus Selzner
- HPB and Multi-Organ Transplant Program, Department of Surgery, Toronto General Hospital, University Health Network, University of Toronto, Toronto, Canada
| | - Raj Prasad
- Division of Transplantation, Department of Surgery, Medical College of Wisconsin, Milwaukee, WI
| | - Mureo Kasahara
- National Center for Child Health and Development, Tokyo, Japan
| | - Hiroto Egawa
- Department of Surgery, Tokyo Women's Medical University, Tokyo, Japan
| | - Jan Lerut
- Institute for Experimental and Clinical Research-Université catholique de Louvain, Brussels, Belgium
| | - Dieter Broering
- King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - Marina Berenguer
- Liver Unit, CIBERehd, Instituto de Investigación Sanitaria La Fe, Hospital Universitario y Politécnico La Fe-Universidad de Valencia, Valencia, Spain
| | - Mark S Cattral
- HPB and Multi-Organ Transplant Program, Department of Surgery, Toronto General Hospital, University Health Network, University of Toronto, Toronto, Canada
| | - Pierre-Alain Clavien
- Department of Surgery and Transplantation, University Hospital Zurich, Zurich, Switzerland
| | - Chao-Long Chen
- Liver Transplant Center and Department of Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Samir R Shah
- Institute of Liver Disease, HPB Surgery and Transplant, Global Hospitals, Mumbai, India
| | - Zhi-Jun Zhu
- Liver Transplantation Center, National Clinical Research Center for Digestive Diseases, Beijing Friendship Hospital, Capital Medical University; and Clinical Center for Pediatric Liver Transplantation, Capital Medical University, Beijing, China
| | - Nancy Ascher
- Department of Surgery, University of California San Francisco Medical Center, San Francisco, CA
| | - Toru Ikegami
- Divsion of Hepatobiliary Surgery and Pancreas Surgery, Department of Surgery, Jikei University School of Medicine, Tokyo, Japan
| | - Prashant Bhangui
- Medanta Institute of Liver Transplantation and Regenerative Medicine, Medanta-The Medicity, New Delhi, India
| | - Ashwin Rammohan
- The Institute of Liver Disease and Transplantation, Dr Rela Institute and Medical Centre, Chennai, India
| | - Jean C Emond
- Department of Surgery, Columbia University College of Physicians and Surgeons, New York, NY
| | - Mohamed Rela
- The Institute of Liver Disease and Transplantation, Dr Rela Institute and Medical Centre, Chennai, India
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Rawashdeh B, Alryalat SA, Kim J, Eriksen C, Abu Assi M, Prasad R, Cooper M. The Leading Transplantation Journals: A Trend Analysis, 2011-2021. J Transplant 2023; 2023:8858320. [PMID: 37795130 PMCID: PMC10547570 DOI: 10.1155/2023/8858320] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 08/21/2023] [Accepted: 09/05/2023] [Indexed: 10/06/2023] Open
Abstract
Background As the field of transplantation has expanded, so have the quantity and variety of articles published on the topic. Evaluation of publications and journals is crucial to the expansion of transplant research. This study investigated the research output and journal metrics of the leading solid organ transplant journals published between 2011 and 2021 based on estimations of the trends in the category CiteScore from the Scopus database. Materials and Methods We obtained data on the listed journals from the Scopus Source List. We then filtered the list for "Transplantation" journals. Only the top quartiles or quartile 1 (Q1) journals were placed in this category. This study focused specifically on transplantation journals and did not include other journals related to diseases of transplanted organs such as the kidney, liver, heart, and lungs. Results The number of transplantation journals increased by 42.8% in the last ten years, from 28 in 2011 to 40 in 2021. Between 2011 and 2021, nine transplantation journals ranked in the highest quartile (Q1). The American Journal of Transplantation was the top journal in both years, with a 150% increase in citations and an 11.2% increase in articles published. Open access (OA) transplant journals rose from 3 in 2011 to 10 in 2021. In 2021, OA journals earned 8,555 citations, a 125% increase from 2011. Despite this increase, non-OA journals received more citations than OA in 2021 (p value 0.026). Conclusion Solid organ transplantation advances lead to more publications and citations. Regular journals and publications evaluation benefits academics and policymakers by promoting the growth of research. This study examined solid organ transplantation journals and gave a global perspective on transplant journal rankings and compared their status in 2011 and 2021.
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Affiliation(s)
- Badi Rawashdeh
- Division of Transplant Surgery, Medical College of Wisconsin, Milwaukee, WI, USA
| | | | - Joohyun Kim
- Division of Transplant Surgery, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Calvin Eriksen
- Division of Transplant Surgery, Medical College of Wisconsin, Milwaukee, WI, USA
| | | | - Raj Prasad
- Division of Transplant Surgery, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Matthew Cooper
- Division of Transplant Surgery, Medical College of Wisconsin, Milwaukee, WI, USA
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Hakeem AR, Taylor R, Prasad R. Comment on "Low utilization of adult-to-adult LDLT in Western countries despite excellent outcomes: International multicentre analysis of the US, the UK, and Canada". J Hepatol 2023; 79:e112-e114. [PMID: 37019338 DOI: 10.1016/j.jhep.2023.03.027] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 03/18/2023] [Indexed: 04/07/2023]
Affiliation(s)
| | | | - Raj Prasad
- St James's University Hospital, Leeds, UK.
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Prasad R, Hakeem AR, Menon K, Aluvihare V. UK liver transplantation allocation algorithm: transplant benefit score. Lancet 2023; 402:370-371. [PMID: 37516539 DOI: 10.1016/s0140-6736(23)01308-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 03/14/2023] [Accepted: 06/21/2023] [Indexed: 07/31/2023]
Affiliation(s)
- Raj Prasad
- Department of Hepatobiliary and Transplant Surgery, St James's University Hospital NHS Trust, Leeds LS9 T7F, UK.
| | - Abdul Rahman Hakeem
- Department of Hepatobiliary and Transplant Surgery, St James's University Hospital NHS Trust, Leeds LS9 T7F, UK
| | - Krishna Menon
- Institute of Liver Diseases, King's College Hospital, London, UK
| | - Varuna Aluvihare
- Institute of Liver Diseases, King's College Hospital, London, UK
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9
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Alfares BA, van der Doef HPJ, Wildhaber BE, Casswall T, Nowak G, Delle M, Aldrian D, Berchtold V, Vogel GF, Kaliciński P, Markiewicz-Kijewska M, Kolesnik A, Bernabeu JQ, Hally MM, Larrarte K M, Marra P, Bravi M, Pinelli D, Kasahara M, Sakamoto S, Uchida H, Mali V, Aw M, Franchi-Abella S, Gonzales E, Guérin F, Cervio G, Minetto J, Sierre S, de Santibañes M, Ardiles V, Uno JW, Evans H, Duncan D, McCall J, Hartleif S, Sturm E, Patel J, Mtegha M, Prasad R, Ferreira CT, Nader LS, Farina M, Jaramillo C, Rodriguez-Davalos MI, Feola P, Shah AA, Wood PM, Acord MR, Fischer RT, Mullapudi B, Hendrickson RJ, Khanna R, Pamecha V, Mukund A, Sharif K, Gupte G, McGuirk S, Porta G, Spada M, Alterio T, Maggiore G, Hardikar W, Beretta M, Dierckx R, de Kleine RHJ, Bokkers RPH. Prevalence, management and efficacy of treatment in portal vein obstruction after paediatric liver transplantation: protocol of the retrospective international multicentre PORTAL registry. BMJ Open 2023; 13:e066343. [PMID: 37500271 PMCID: PMC10387733 DOI: 10.1136/bmjopen-2022-066343] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 07/29/2023] Open
Abstract
INTRODUCTION Portal vein obstruction (PVO) consists of anastomotic stenosis and thrombosis, which occurs due to a progression of the former. The aim of this large-scale international study is to assess the prevalence, current management practices and efficacy of treatment in patients with PVO. METHODS AND ANALYSIS The Portal vein Obstruction Revascularisation Therapy After Liver transplantation registry will facilitate an international, retrospective, multicentre, observational study, with 25 centres around the world already actively involved. Paediatric patients (aged <18 years) with a diagnosed PVO between 1 January 2001 and 1 January 2021 after liver transplantation will be eligible for inclusion. The primary endpoints are the prevalence of PVO, primary and secondary patency after PVO intervention and current management practices. Secondary endpoints are patient and graft survival, severe complications of PVO and technical success of revascularisation techniques. ETHICS AND DISSEMINATION Medical Ethics Review Board of the University Medical Center Groningen has approved the study (METc 2021/072). The results of this study will be disseminated via peer-reviewed publications and scientific presentations at national and international conferences. TRIAL REGISTRATION NUMBER Netherlands Trial Register (NL9261).
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Affiliation(s)
- Bader A Alfares
- Department of Radiology, Medical Imaging Center, University Medical Centre Groningen, Groningen, The Netherlands
- King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Hubert P J van der Doef
- Division of Paediatric Gastroenterology and Hepatology, Department of Paediatrics, University Medical Centre Groningen, Groningen, The Netherlands
| | - Barbara E Wildhaber
- Swiss Paediatric Liver Centre, Division of Child and Adolescent Surgery, Geneva University Hospitals, Geneve, Switzerland
| | - Thomas Casswall
- Department Clinical Interventions and Technology Clintec, Division for Paediatrics, Karolinska Institute, Stockholm, Sweden
| | - Greg Nowak
- Department Clinical Interventions and Technology Clintec, Division for Transplantation Surgery, Karolinska Institute, Stockholm, Sweden
| | - Martin Delle
- Department Clinical Science, Intervention and Technology Clintec, Division for Interventional Radiology, Karolinska Institute, Stockholm, Sweden
| | - Denise Aldrian
- Department of Paediatrics, Medical University of Innsbruck, Innsbruck, Austria
| | - Valeria Berchtold
- Department of Visceral, Transplant and Thoracic Surgery, Medical University of Innsbruck, Innsbruck, Austria
| | - Georg F Vogel
- Department of Paediatrics, Medical University of Innsbruck, Innsbruck, Austria
- Institute of Cell Biology, Medical University of Innsbruck, Innsbruck, Austria
| | - Piotr Kaliciński
- Department of Paediatric Surgery and Organ Transplantation, The Children's Memorial Health Institute, Warsaw, Poland
| | | | - Adam Kolesnik
- Cardiovascular Interventions Laboratory, The Children's Memorial Health Institute, Warsaw, Poland
| | - Jesús Q Bernabeu
- Department of Paediatric Gastroenterology, Hepatology and Nutrition, Vall d'Hebron Hospital (HVH), Barcelona, Spain
| | - María Mercadal Hally
- Department of Paediatric Gastroenterology, Hepatology and Nutrition, Vall d'Hebron Hospital (HVH), Barcelona, Spain
| | - Mauricio Larrarte K
- Department of Paediatric Gastroenterology, Hepatology and Nutrition, Vall d'Hebron Hospital (HVH), Barcelona, Spain
| | - Paolo Marra
- Department of Radiology, ASST Papa Giovanni XXIII, Bergamo, Italy
| | - Michela Bravi
- Department of Paediatric Hepatology, Gastroenterology and Transplantation, ASST Papa Giovanni XXIII, Bergamo, Italy
| | - Domenico Pinelli
- Department of Organ Failure and Transplantation, ASST Papa Giovanni XXIII, Bergamo, Italy
| | - Mureo Kasahara
- Organ Transplantation Centre, National Center for Child Health and Development, Tokyo, Japan
| | - Seisuke Sakamoto
- Organ Transplantation Centre, National Center for Child Health and Development, Tokyo, Japan
| | - Hajime Uchida
- Organ Transplantation Centre, National Center for Child Health and Development, Tokyo, Japan
| | - Vidyadhar Mali
- Department of Paediatric Surgery, National University Hospital, Singapore
| | - Marion Aw
- Department of Paediatrics, National University Hospital, Singapore
| | | | - Emmanuel Gonzales
- Paediatric Hepatology and Paediatric Liver Transplantation Unit, Hôpital Bicêtre, Paris, France
| | - Florent Guérin
- Paediatric Surgery and Paediatric Liver Transplantation Unit, Hôpital Bicêtre, Paris, France
| | - Guillermo Cervio
- Division of Liver Transplant, Hospital de Pediatría Prof Dr Juan P Garrahan, Buenos Aires, Argentina
| | - Julia Minetto
- Division of Liver Transplant, Hospital de Pediatría Prof Dr Juan P Garrahan, Buenos Aires, Argentina
| | - Sergio Sierre
- Division of Interventional Radiology, Hospital de Pediatría Prof Dr Juan P Garrahan, Buenos Aires, Argentina
| | - Martin de Santibañes
- HPB and Liver Transplant Unit, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
| | - Victoria Ardiles
- HPB and Liver Transplant Unit, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
| | - Jimmy Walker Uno
- HPB and Liver Transplant Unit, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
| | - Helen Evans
- Department of Paediatric Gastroenterology, Starship Children's Health, Auckland, New Zealand
| | - David Duncan
- Department of Paediatric Radiology, Starship Children's Health, Auckland, New Zealand
| | - John McCall
- Liver Transplant Unit, Starship Children's Health, Auckland, New Zealand
| | - Steffen Hartleif
- Paediatric Gastroenterology and Hepatology, University Hospitals Tubingen, Tubingen, Germany
| | - Ekkehard Sturm
- Paediatric Gastroenterology and Hepatology, University Hospitals Tubingen, Tubingen, Germany
| | - Jai Patel
- Department of Radiology, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Marumbo Mtegha
- Department of Paediatrics, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Raj Prasad
- Department of Surgery and Transplantation, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | | | - Luiza S Nader
- Department of Paediatrics, Hospital Santo Antonio, Porto Alegre, Brazil
| | - Marco Farina
- Department of Paediatrics, Hospital Santo Antonio, Porto Alegre, Brazil
| | - Catalina Jaramillo
- Department of Paediatrics, Division of Paediatric Gastroenterology, Hepatology and Nutrition, The University of Utah School of Medicine, Salt Lake City, Utah, USA
| | | | - Peter Feola
- Paediatric Interventional Radiology, The University of Utah School of Medicine, Salt Lake City, Utah, USA
| | - Amit A Shah
- Division of Gastroenterology, Hepatology and Nutrition, Department of Paediatrics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Phoebe M Wood
- Division of Gastroenterology, Hepatology and Nutrition, Department of Paediatrics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Michael R Acord
- Department of Radiology, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Ryan T Fischer
- Division of Paediatric Gastroenterology and Hepatology, Department of Paediatrics, Children's Mercy Hospital Kansas, Overland Park, Kansas, USA
| | - Bhargava Mullapudi
- Department of Paediatric Surgery, Children's Mercy Hospital Kansas, Overland Park, Kansas, USA
| | - Richard J Hendrickson
- Department of Paediatric Surgery, Children's Mercy Hospital Kansas, Overland Park, Kansas, USA
| | - Rajeev Khanna
- Department of Paediatric Hepatology, Institute of Liver and Biliary Sciences, New Delhi, Delhi, India
| | - Viniyendra Pamecha
- Department Hepatobiliary Surgery and Liver transplantation, Institute of Liver and Biliary Sciences, New Delhi, Delhi, India
| | - Amar Mukund
- Department of Interventional Radiology, Institute of Liver and Biliary Sciences, New Delhi, Delhi, India
| | - Khalid Sharif
- Liver Unit, Birmingham Women's and Children's Hospitals NHS Foundation Trust, Birmingham, UK
| | - Girish Gupte
- Liver Unit, Birmingham Women's and Children's Hospitals NHS Foundation Trust, Birmingham, UK
| | - Simon McGuirk
- Department of Interventional Radiology, Birmingham Women's and Children's Hospitals NHS Foundation Trust, Birmingham, UK
| | - Gilda Porta
- Department of Paediatric Hepatology, Hospital Sírio-Libanês, Sao Paulo, Brazil
| | - Marco Spada
- Division of Abdominal Transplantation and Hepatobiliopancreatic Surgery, Ospedale Pediatrico Bambino Gesu, Roma, Italy
| | - Tommaso Alterio
- Gastrointestinal, Liver, Nutrition Disorders Unit, IRCCS Pediatric Hospital Bambino Gesù, Rome, Italy
| | - Giuseppe Maggiore
- Gastrointestinal, Liver, Nutrition Disorders Unit, IRCCS Pediatric Hospital Bambino Gesù, Rome, Italy
| | - Winita Hardikar
- Department of Pediatrics, Royal Children's Hospital Research Institute, Parkville, Victoria, Australia
| | - Marisa Beretta
- Faculty of Health Sciences, Wits Donald Gordon Medical Centre, Johannesburg, South Africa
| | - Rudi Dierckx
- Department of Radiology, Medical Imaging Center, University Medical Centre Groningen, Groningen, The Netherlands
| | - Ruben H J de Kleine
- Division of Hepatobiliary Surgery & Liver Transplantation, Department of Surgery, University Medical Centre Groningen, Groningen, The Netherlands
| | - Reinoud P H Bokkers
- Department of Radiology, Medical Imaging Center, University Medical Centre Groningen, Groningen, The Netherlands
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Rawashdeh B, Kim J, AlRyalat SA, Prasad R, Cooper M. ChatGPT and Artificial Intelligence in Transplantation Research: Is It Always Correct? Cureus 2023; 15:e42150. [PMID: 37602076 PMCID: PMC10438857 DOI: 10.7759/cureus.42150] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/18/2023] [Indexed: 08/22/2023] Open
Abstract
INTRODUCTION ChatGPT (OpenAI, San Francisco, California, United States) is a chatbot powered by language-based artificial intelligence (AI). It generates text based on the information provided by users. It is currently being evaluated in medical research, publishing, and healthcare. However, there has been no prior study on the evaluation of its ability to help in kidney transplant research. This feasibility study aimed to evaluate the application and accuracy of ChatGPT in the field of kidney transplantation. METHODS On two separate dates, February 21 and March 2, 2023, ChatGPT 3.5 was questioned regarding the medical treatment of kidney transplants and related scientific facts. The responses provided by the chatbot were compiled, and a panel of two specialists reviewed the correctness of each answer. RESULTS We demonstrated that ChatGPT possessed substantial general knowledge of kidney transplantation; however, they lacked sufficient information and had inaccurate information that necessitates a deeper understanding of the topic. Moreover, ChatGPT failed to provide references for any of the scientific data it provided regarding kidney transplants, and when requested for references, it provided inaccurate ones. CONCLUSION The results of this short feasibility study indicate that ChatGPT may have the ability to assist in data collecting when a particular query is posed. However, caution should be exercised and it should not be used in isolation as a supplement to research or decisions regarding healthcare because there are still challenges with data accuracy and missing information.
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Affiliation(s)
- Badi Rawashdeh
- Transplant Surgery, Medical College of Wisconsin, Milwaukee, USA
| | - Joohyun Kim
- Transplant Surgery, Medical College of Wisconsin, Milwaukee, USA
| | | | - Raj Prasad
- Transplant Surgery, Medical College of Wisconsin, Milwaukee, USA
| | - Matthew Cooper
- Transplant Surgery, Medical College of Wisconsin, Milwaukee, USA
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11
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Corallo C, Bell J, Laverty A, Mohsin M, Prasad R, Albazaz R. Suspected focal nodular hyperplasia in male adults: 10-year experience from a large liver centre. Abdom Radiol (NY) 2023; 48:2292-2301. [PMID: 37043025 DOI: 10.1007/s00261-023-03896-z] [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: 01/26/2023] [Revised: 03/20/2023] [Accepted: 03/21/2023] [Indexed: 04/13/2023]
Abstract
PURPOSE Focal nodular hyperplasia (FNH) is commonly found in females of reproductive age. In males, the diagnosis is made more cautiously due to its lower incidence and higher incidence of hepatocellular carcinoma, which can have overlapping imaging features. Follow-up or biopsy is sometimes required. This retrospective study aims to assess management of suspected FNH in male adult patients at our institution over a 10-year period. METHODS Male adults (≥ 18 years) suspected of having FNH from January 2010-June 2020 were identified using a departmental radiology information system search. Data was collected from radiology reports and patient pathway manager. RESULTS Of 342 patients with suspected FNH, 62 were male (18.1%; F:M of 4.5:1). We only included patients investigated and followed up by MRI, total of 57 patients. Median age was 40 years (range 18-74 years). Background liver disease present in 21/57 (36.8%), majority with hepatic steatosis. Average number of lesions per patient 1.7. 22/57 (38.6%) had at least one MRI follow-up using liver-specific contrast with 7 lesions demonstrating variation in size (range growth: -3.27 mm/year to + 4 mm/year). In 7 cases, MRI was not definitive; 6 required biopsy and 1 resection. Only 2/7 demonstrated malignancy. Of the total 57 patients, 6 have deceased and none due to a misdiagnosed or mismanaged hepatic lesion. CONCLUSION FNH is relatively uncommon in males, however, our data suggests that lesions with typical MRI characteristics do not require follow-up and diagnosis can be made confidently, similar to females. Any atypical features should prompt a biopsy.
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Affiliation(s)
- Carmelo Corallo
- Department of Radiology, Leeds Teaching Hospitals NHS Trust, St. James's University Hospital, Beckett Street Harehills, Leeds, LS9 7TF, UK.
| | - Joshua Bell
- Department of Radiology, Leeds Teaching Hospitals NHS Trust, St. James's University Hospital, Beckett Street Harehills, Leeds, LS9 7TF, UK
| | - Adam Laverty
- Department of Radiology, Leeds Teaching Hospitals NHS Trust, St. James's University Hospital, Beckett Street Harehills, Leeds, LS9 7TF, UK
| | - Maryam Mohsin
- Department of Radiology, Leeds Teaching Hospitals NHS Trust, St. James's University Hospital, Beckett Street Harehills, Leeds, LS9 7TF, UK
| | - Raj Prasad
- Department of Hepatobiliary and Transplant Surgery, Leeds Teaching Hospitals NHS Trust, St. James's University Hospital, Leeds, UK
| | - Raneem Albazaz
- Department of Radiology, Leeds Teaching Hospitals NHS Trust, St. James's University Hospital, Beckett Street Harehills, Leeds, LS9 7TF, UK
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12
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Alnagar AM, Hakeem AR, Daradka K, Kyrana E, Methga M, Palaniswamy K, Rajwal S, Mulla J, O'meara M, Upasani V, Vijayanand D, Prasad R, Attia MS. Long-term outcomes of pediatric liver transplantation in acute liver failure vs end-stage chronic liver disease: A retrospective observational study. World J Transplant 2023; 13:96-106. [PMID: 36968135 PMCID: PMC10037232 DOI: 10.5500/wjt.v13.i3.96] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 12/22/2022] [Accepted: 03/06/2023] [Indexed: 03/16/2023] Open
Abstract
BACKGROUND Children with acute liver failure (ALF) who meet the criteria are eligible for super-urgent transplantation, whereas children with end-stage chronic liver disease (ESCLD) are usually transplanted electively. Pediatric liver transplantation (PLT) in ALF and ESCLD settings has been well described in the literature, but there are no studies comparing the outcomes in these two groups.
AIM To determine if there is a difference in post-operative complications and survival outcomes between ALF and ESCLD in PLT.
METHODS This was a retrospective observational study of all primary PLTs performed at a single center between 2000 and 2019. ALF and ESCLD groups were compared for pretransplant recipient, donor and operative parameters, and post-operative outcomes including graft and patient survival.
RESULTS Over a 20-year study period, 232 primary PLTs were performed at our center; 195 were transplanted for ESCLD and 37 were transplanted for ALF. The ALF recipients were significantly older (median 8 years vs 5.4 years; P = 0.031) and heavier (31 kg vs 21 kg; P = 0.011). Living donor grafts were used more in the ESCLD group (34 vs 0; P = 0.006). There was no difference between the two groups concerning vascular complications and rejection, but there were more bile leaks in the ESCLD group. Post-transplant patient survival was significantly higher in the ESCLD group: 1-, 5-, and 10-year survival rates were 97.9%, 93.9%, and 89.4%, respectively, compared to 78.3%, 78.3%, and 78.3% in the ALF group (P = 0.007). However, there was no difference in 1-, 5-, and 10-year graft survival between the ESCLD and ALF groups (90.7%, 82.9%, 77.3% vs 75.6%, 72.4%, and 66.9%; P = 0.119).
CONCLUSION Patient survival is inferior in ALF compared to ESCLD recipients; the main reason is death in the 1st year post-PLT in ALF group. Once the ALF children overcome the 1st year after transplant, their survival stabilizes, and they have good long-term outcomes.
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Affiliation(s)
- Amr M Alnagar
- Department of General Surgery, Faculty of Medicine, Alexandria University, Alexandria 21615, Egypt
- Liver and Transplant Surgery, The Leeds Teaching Hospitals, NHS Foundation Trust, Leeds LS9 7TF, United Kingdom
| | - Abdul R Hakeem
- Liver and Transplant Surgery, The Leeds Teaching Hospitals, NHS Foundation Trust, Leeds LS9 7TF, United Kingdom
| | - Khaled Daradka
- Liver and Transplant Surgery, The Leeds Teaching Hospitals, NHS Foundation Trust, Leeds LS9 7TF, United Kingdom
| | - Eirini Kyrana
- Liver and Transplant Surgery, The Leeds Teaching Hospitals, NHS Foundation Trust, Leeds LS9 7TF, United Kingdom
| | - Marumbo Methga
- Liver and Transplant Surgery, The Leeds Teaching Hospitals, NHS Foundation Trust, Leeds LS9 7TF, United Kingdom
| | - Karthikeyan Palaniswamy
- Liver and Transplant Surgery, The Leeds Teaching Hospitals, NHS Foundation Trust, Leeds LS9 7TF, United Kingdom
| | - Sanjay Rajwal
- Liver and Transplant Surgery, The Leeds Teaching Hospitals, NHS Foundation Trust, Leeds LS9 7TF, United Kingdom
| | - Jamila Mulla
- Liver and Transplant Surgery, The Leeds Teaching Hospitals, NHS Foundation Trust, Leeds LS9 7TF, United Kingdom
| | - Moira O'meara
- Liver and Transplant Surgery, The Leeds Teaching Hospitals, NHS Foundation Trust, Leeds LS9 7TF, United Kingdom
| | - Vivek Upasani
- Liver and Transplant Surgery, The Leeds Teaching Hospitals, NHS Foundation Trust, Leeds LS9 7TF, United Kingdom
| | - Dhakshinamoorthy Vijayanand
- Liver and Transplant Surgery, The Leeds Teaching Hospitals, NHS Foundation Trust, Leeds LS9 7TF, United Kingdom
| | - Raj Prasad
- Liver and Transplant Surgery, The Leeds Teaching Hospitals, NHS Foundation Trust, Leeds LS9 7TF, United Kingdom
| | - Magdy S Attia
- Liver and Transplant Surgery, The Leeds Teaching Hospitals, NHS Foundation Trust, Leeds LS9 7TF, United Kingdom
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13
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Ng KC, Hakeem AR, Prasad R. Comment on "Living Donor Liver Transplantation With Augmented Venous Outflow and Splenectomy: A Promised Land for Small Left Lobe Grafts". Ann Surg Open 2023; 4:e243. [PMID: 37600893 PMCID: PMC10431454 DOI: 10.1097/as9.0000000000000243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Accepted: 12/06/2022] [Indexed: 03/06/2023] Open
Affiliation(s)
- Kin Cheung Ng
- From the Department of HPB and Transplant Service, St. James’s University Hospital, Leeds, United Kingdom
| | - Abdul R. Hakeem
- From the Department of HPB and Transplant Service, St. James’s University Hospital, Leeds, United Kingdom
| | - Raj Prasad
- From the Department of HPB and Transplant Service, St. James’s University Hospital, Leeds, United Kingdom
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14
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Murphy J, Prasad R, Menon K. United Kingdom criteria for liver transplantation in the setting of isolated unresectable colorectal liver metastases. Colorectal Dis 2023; 25:489-494. [PMID: 36471645 DOI: 10.1111/codi.16446] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Accepted: 11/20/2022] [Indexed: 02/02/2023]
Abstract
AIM Studies have demonstrated that liver transplantation may be an effective treatment for isolated unresectable colorectal cancer liver metastases (CRCLM). Published data suggest that 5-year survival may be as high as 80%; however, recurrent disease is commonplace. Consequently, the Liver Transplantation for Unresectable Colorectal Liver Metastases Fixed Term Working Unit recommended to the NHS Blood and Transplant Liver Advisory Group that while CRCLM is an appropriate indication for transplantation, selection criteria should be conservative and that it should be undertaken within a clinical service evaluation programme. The aim of this work is to outline the proposed UK selection criteria and follow-up process for CRCLM transplantation. METHOD Consensus statement by colorectal cancer/liver transplantation patient representatives, experts in colorectal cancer surgery/oncology, liver transplantation surgery, hepatology, hepatobiliary radiology, hepatobiliary pathology and nuclear medicine. RESULTS This study provides a comprehensive outline of the inclusion/exclusion criteria for referral in the UK. Furthermore, the referral framework is also explained. Pretransplant assessment criteria for listing/delisting are outlined. Finally, the oncology-specific outcome measures posttransplant are described. CONCLUSION It is anticipated this service will begin in December 2022. A series of educational events for the referrers and transplant units will be arranged throughout 2023 to highlight CRCLM as a newly accepted UK indication for transplantation. A national audit will be undertaken to identify patients currently on treatment who meet the criteria for transplant. Data will be collected in a national registry and reviewed on an ongoing basis to confirm the safety of this treatment and to determine if the inclusion criteria require revision.
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Affiliation(s)
- Jamie Murphy
- Department of Surgery and Cancer, Imperial College London, London, UK
- Digestive Diseases and Surgery Institute, Cleveland Clinic London, London, UK
| | - Raj Prasad
- Liver Transplantation and HPB Surgery, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Krishna Menon
- Institute of Liver Studies, King's College Hospital, London, UK
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15
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Menon K, Vijayashanker A, Murphy J, Line PD, Isaac J, Adair A, Prasad R, Thorburn D. Liver transplantation for isolated unresectable colorectal liver metastases - Protocol for a service evaluation in the United Kingdom - UKCoMET study. HPB (Oxford) 2023:S1365-182X(23)00049-7. [PMID: 36948901 DOI: 10.1016/j.hpb.2023.02.011] [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] [Received: 11/24/2022] [Revised: 01/13/2023] [Accepted: 02/13/2023] [Indexed: 03/24/2023]
Abstract
BACKGROUND Liver transplantation (LT) for unresectable colorectal liver metastases (CRCLM) demonstrates good overall survival for selected patients in contemporary studies, with 5-year survival of 80%. A Fixed Term Working Group (FTWG), set up by NHS Blood and Transplant (NHSBT) Liver Advisory Group (LAG), advised whether CRCLM should be considered for LT in United Kingdom. Their recommendation was that LT may be undertaken for isolated and unresectable CRCLM using strict selection criteria as a national clinical service evaluation. METHODS Opinions were sought from colorectal cancer/LT patient representatives, experts in colorectal cancer surgery/oncology, LT surgery, hepatology, hepatobiliary radiology, pathology, and nuclear medicine, and appropriate patient selection criteria, referral and transplant listing pathways were identified. RESULTS This paper summarises selection criteria for LT in United Kingdom for isolated and unresectable CRCLM patients, and highlights referral framework and pre-transplant assessment criteria. Finally, oncology-specific outcome measures to be utilised for assessing applicability of LT are described. CONCLUSION This service evaluation represents a significant development for colorectal cancer patients in United Kingdom and a meaningful step forward in the field of transplant oncology. This paper details the protocol for the pilot study, scheduled to begin in the fourth quarter of 2022 in United Kingdom.
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Affiliation(s)
- Krishna Menon
- Institute of Liver Studies, King's College Hospital, London, UK; Digestive Diseases and Surgery Institute, Cleveland Clinic London, UK.
| | | | - Jamie Murphy
- Department of Surgery and Cancer, Imperial College London, UK; Digestive Diseases and Surgery Institute, Cleveland Clinic London, UK
| | - Pål-Dag Line
- Department of Transplantation Medicine, Oslo University Hospital, Oslo, Norway; Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - John Isaac
- Liver Unit, Queen Elizabeth Hospital, Birmingham, UK
| | - Anya Adair
- Scottish Liver Transplant Unit, Royal Infirmary of Edinburgh, UK
| | - Raj Prasad
- Liver Transplantation and HPB Surgery, Leeds Teaching Hospitals, Leeds, UK
| | - Douglas Thorburn
- Sheila Sherlock Liver Centre and UCL Institute for Liver & Digestive Health, Royal Free Hospital, London, UK
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Smith C, Williams J, Hall C, Caley M, O’Toole E, Prasad R, Metherell L. 181 Sphingosine 1-phosphate lyase insufficiency induced ichthyosis is due to sphingolipid imbalance, increased differentiation, and aberrant intercellular junctions. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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17
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Bell R, Begum S, Prasad R, Taura K, Dasari BVM. Volume and flow modulation strategies to mitigate post-hepatectomy liver failure. Front Oncol 2022; 12:1021018. [PMID: 36465356 PMCID: PMC9714434 DOI: 10.3389/fonc.2022.1021018] [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] [Received: 08/16/2022] [Accepted: 10/20/2022] [Indexed: 07/21/2023] Open
Abstract
INTRODUCTION Post hepatectomy liver failure is the most common cause of death following major hepatic resections with a perioperative mortality rate between 40% to 60%. Various strategies have been devised to increase the volume and function of future liver remnant (FLR). This study aims to review the strategies used for volume and flow modulation to reduce the incidence of post hepatectomy liver failure. METHOD An electronic search was performed of the MEDLINE, EMBASE and PubMed databases from 2000 to 2022 using the following search strategy "Post hepatectomy liver failure", "flow modulation", "small for size flow syndrome", "portal vein embolization", "dual vein embolization", "ALPPS" and "staged hepatectomy" to identify all articles published relating to this topic. RESULTS Volume and flow modulation strategies have evolved over time to maximize the volume and function of FLR to mitigate the risk of PHLF. Portal vein with or without hepatic vein embolization/ligation, ALPPS, and staged hepatectomy have resulted in significant hypertrophy and kinetic growth of FLR. Similarly, techniques including portal flow diversion, splenic artery ligation, splenectomy and pharmacological agents like somatostatin and terlipressin are employed to reduce the risk of small for size flow syndrome SFSF syndrome by decreasing portal venous flow and increasing hepatic artery flow at the same time. CONCLUSION The current review outlines the various strategies of volume and flow modulation that can be used in isolation or combination in the management of patients at risk of PHLF.
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Affiliation(s)
- Richard Bell
- Department of Hepatobiliary and Transplant Surgery, St. James’s University Hospital, Leeds, United Kingdom
| | - Saleema Begum
- Department of Hepatobiliary and Pancreatic (HPB) and Transplant Surgery, University Hospital Birmingham, Birmingham, United Kingdom
| | - Raj Prasad
- Department of Hepatobiliary and Transplant Surgery, St. James’s University Hospital, Leeds, United Kingdom
| | - Kojiro Taura
- Division of Hepatobiliary and Pancreatic (HPB) Surgery and Transplantation, Department of Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Bobby V. M. Dasari
- Department of Hepatobiliary and Pancreatic (HPB) and Transplant Surgery, University Hospital Birmingham, Birmingham, United Kingdom
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, United Kingdom
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18
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Safdar NZ, Hakeem AR, Faulkes R, James F, Mason L, Masson S, Powell J, Rowe I, Shetty S, Jones R, Spiers HVM, Halliday N, Baker J, Thorburn D, Prasad R, Parker R. Outcomes After Liver Transplantation With Incidental Cholangiocarcinoma. Transpl Int 2022; 35:10802. [PMID: 36406780 PMCID: PMC9667791 DOI: 10.3389/ti.2022.10802] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 10/18/2022] [Indexed: 12/03/2022]
Abstract
Cholangiocarcinoma (CCA) is currently a contraindication to liver transplantation (LT) in the United Kingdom (UK). Incidental CCA occurs rarely in some patients undergoing LT. We report on retrospective outcomes of patients with incidental CCA from six UK LT centres. Cases were identified from pathology records. Data regarding tumour characteristics and post-transplant survival were collected. CCA was classified by TNM staging and anatomical location. 95 patients who underwent LT between 1988-2020 were identified. Median follow-up after LT was 2.1 years (14 days-18.6 years). Most patients were male (68.4%), median age at LT was 53 (IQR 46-62), and the majority had underlying PSC (61%). Overall median survival after LT was 4.4 years. Survival differed by tumour site: 1-, 3-, and 5-year estimated survival was 82.1%, 68.7%, and 57.1%, respectively, in intrahepatic CCA (n = 40) and 58.5%, 42.6%, and 30.2% in perihilar CCA (n = 42; p = 0.06). 1-, 3-, and 5-year estimated survival was 95.8%, 86.5%, and 80.6%, respectively, in pT1 tumours (28.2% of cohort), and 65.8%, 44.7%, and 31.1%, respectively, in pT2-4 (p = 0.018). Survival after LT for recipients with incidental CCA is inferior compared to usual outcomes for LT in the United Kingdom. LT for earlier stage CCA has similar survival to LT for hepatocellular cancer, and intrahepatic CCAs have better survival compared to perihilar CCAs. These observations may support LT for CCA in selected cases.
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Affiliation(s)
- Nawaz Z. Safdar
- School of Medicine, University of Leeds, Leeds, United Kingdom,Leeds Liver Unit, St James’ University Hospital, Leeds, United Kingdom
| | - Abdul R. Hakeem
- Leeds Liver Unit, St James’ University Hospital, Leeds, United Kingdom
| | | | - Fiona James
- Leeds Liver Unit, St James’ University Hospital, Leeds, United Kingdom
| | - Lisa Mason
- Royal Infirmary of Edinburgh, Edinburgh, United Kingdom
| | - Steven Masson
- Newcastle Upon Tyne Hospitals, Newcastle, United Kingdom
| | - James Powell
- Royal Infirmary of Edinburgh, Edinburgh, United Kingdom
| | - Ian Rowe
- Leeds Liver Unit, St James’ University Hospital, Leeds, United Kingdom
| | - Shishir Shetty
- University Hospitals Birmingham, Birmingham, United Kingdom
| | - Rebecca Jones
- Leeds Liver Unit, St James’ University Hospital, Leeds, United Kingdom
| | - Harry V. M. Spiers
- Roy Calne Transplant Unit, Addenbrooke’s Hospital, Cambridge, United Kingdom
| | | | | | | | - Raj Prasad
- Leeds Liver Unit, St James’ University Hospital, Leeds, United Kingdom
| | - Richard Parker
- Leeds Liver Unit, St James’ University Hospital, Leeds, United Kingdom,*Correspondence: Richard Parker,
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19
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Marahrens N, Scaglioni B, Jones D, Prasad R, Biyani CS, Valdastri P. Towards Autonomous Robotic Minimally Invasive Ultrasound Scanning and Vessel Reconstruction on Non-Planar Surfaces. Front Robot AI 2022; 9:940062. [PMID: 36304794 PMCID: PMC9594548 DOI: 10.3389/frobt.2022.940062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 06/09/2022] [Indexed: 11/13/2022] Open
Abstract
Autonomous robotic Ultrasound (US) scanning has been the subject of research for more than 2 decades. However, little work has been done to apply this concept into a minimally invasive setting, in which accurate force sensing is generally not available and robot kinematics are unreliable due to the tendon-driven, compliant robot structure. As a result, the adequate orientation of the probe towards the tissue surface remains unknown and the anatomy reconstructed from scan may become highly inaccurate. In this work we present solutions to both of these challenges: an attitude sensor fusion scheme for improved kinematic sensing and a visual, deep learning based algorithm to establish and maintain contact between the organ surface and the US probe. We further introduce a novel scheme to estimate and orient the probe perpendicular to the center line of a vascular structure. Our approach enables, for the first time, to autonomously scan across a non-planar surface and navigate along an anatomical structure with a robotically guided minimally invasive US probe. Our experiments on a vessel phantom with a convex surface confirm a significant improvement of the reconstructed curved vessel geometry, with our approach strongly reducing the mean positional error and variance. In the future, our approach could help identify vascular structures more effectively and help pave the way towards semi-autonomous assistance during partial hepatectomy and the potential to reduce procedure length and complication rates.
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Affiliation(s)
- Nils Marahrens
- Storm Lab UK, Institute for Robotics, Autonomous Systems and Sensing, School of Electronic and Electrical Engineering, University of Leeds, Leeds, United Kingdom
- *Correspondence: Nils Marahrens,
| | - Bruno Scaglioni
- Storm Lab UK, Institute for Robotics, Autonomous Systems and Sensing, School of Electronic and Electrical Engineering, University of Leeds, Leeds, United Kingdom
| | - Dominic Jones
- Storm Lab UK, Institute for Robotics, Autonomous Systems and Sensing, School of Electronic and Electrical Engineering, University of Leeds, Leeds, United Kingdom
| | - Raj Prasad
- Department for Hepatobiliary Surgery, James’s University Hospital, Leeds Teachings Hospitals NHS Trust, Leeds, United Kingdom
| | - Chandra Shekhar Biyani
- Department for Urology, James’s University Hospital, Leeds Teachings Hospitals NHS Trust, Leeds, United Kingdom
| | - Pietro Valdastri
- Storm Lab UK, Institute for Robotics, Autonomous Systems and Sensing, School of Electronic and Electrical Engineering, University of Leeds, Leeds, United Kingdom
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20
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Parwaiz I, Hakeem A, Nwogwugwu O, Prasad R, Hidalgo E, Lodge P, Toogood G, Pathak S. Does ALT Correlate with Survival After Liver Resection for Colorectal Liver Metastases? J Clin Exp Hepatol 2022; 12:1285-1292. [PMID: 36157153 PMCID: PMC9499836 DOI: 10.1016/j.jceh.2022.04.018] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 04/24/2022] [Indexed: 12/12/2022] Open
Abstract
Background The pringle manoeuvre is commonly used during hepatectomy, which may cause ischaemia-reperfusion injury and transient liver dysfunction. Post-operative liver transaminases are often used to assess ischaemia-reperfusion injury, although there is conflicting evidence on survival outcomes. The primary aim was to assess post-operative alanine aminotransferase (ALT) with survival outcomes. Secondary aims were to assess ALT level with the length of stay and overall complications. Methods Post-operative day 2 ALT levels of five times the upper limit of normal (i.e. 280 U/L) were considered as clinically significant transaminitis. Kaplan-Meier survival curves were studied using log-rank analysis to identify the predictors of overall survival (OS) and recurrence-free survival (RFS). Results Out of 752 patients who underwent hepatectomy, 527 (70.1%) patients had low ALT (<280 U/L) and 225 (29.9%) patients had high ALT on day 2 post-op. Post-operative ALT did not affect OS (P = 0.883) or RFS (P = 0.063). Factors associated with a worse OS and RFS on multivariate analysis were pre-operative chemotherapy, number of tumours and largest tumour size (>4 cm). A high post-operative ALT was not associated with the increased length of stay or more complications. Conclusions Post-operative ALT does not affect survival outcomes post-hepatectomy for colorectal liver metastases.
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Affiliation(s)
- Iram Parwaiz
- Bristol Royal Infirmary, Upper Maudlin Street, Bristol BS2 8HW, UK
| | - Abdul Hakeem
- St James's University Hospital, Beckett Street, Leeds, LS9 7TF, UK
| | - Obi Nwogwugwu
- Bristol Royal Infirmary, Upper Maudlin Street, Bristol BS2 8HW, UK
| | - Raj Prasad
- St James's University Hospital, Beckett Street, Leeds, LS9 7TF, UK
| | - Ernest Hidalgo
- St James's University Hospital, Beckett Street, Leeds, LS9 7TF, UK
| | - Peter Lodge
- St James's University Hospital, Beckett Street, Leeds, LS9 7TF, UK
| | - Giles Toogood
- St James's University Hospital, Beckett Street, Leeds, LS9 7TF, UK
| | - Samir Pathak
- Bristol Royal Infirmary, Upper Maudlin Street, Bristol BS2 8HW, UK
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21
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Bridgewater J, Fletcher P, Palmer DH, Malik HZ, Prasad R, Mirza D, Anthony A, Corrie P, Falk S, Finch-Jones M, Wasan H, Ross P, Wall L, Wadsley J, Evans TR, Stocken D, Stubbs C, Praseedom R, Ma YT, Davidson B, Neoptolemos J, Iveson T, Cunningham D, Garden OJ, Valle JW, Primrose J. Long-Term Outcomes and Exploratory Analyses of the Randomized Phase III BILCAP Study. J Clin Oncol 2022; 40:2048-2057. [PMID: 35316080 DOI: 10.1200/jco.21.02568] [Citation(s) in RCA: 55] [Impact Index Per Article: 27.5] [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: 10/31/2021] [Revised: 12/16/2021] [Accepted: 02/09/2022] [Indexed: 01/03/2023] Open
Abstract
PURPOSE The BILCAP study described a modest benefit for capecitabine as adjuvant therapy for curatively resected biliary tract cancer (BTC), and capecitabine has become the standard of care. We present the long-term data and novel exploratory subgroup analyses. METHODS This randomized, controlled, multicenter, phase III study recruited patients age 18 years or older with histologically confirmed cholangiocarcinoma or muscle-invasive gallbladder cancer after resection with curative intent and an Eastern Cooperative Oncology Group performance status of < 2. Patients were randomly assigned 1:1 to receive oral capecitabine (1,250 mg/m2 twice daily on days 1-14 of a 21-day cycle, for eight cycles) or observation. The primary outcome was overall survival (OS). This study is registered with EudraCT 2005-003318-13. RESULTS Between March 15, 2006, and December 4, 2014, 447 patients were enrolled; 223 patients with BTC resected with curative intent were randomly assigned to the capecitabine group and 224 to the observation group. At the data cutoff of January 21, 2021, the median follow-up for all patients was 106 months (95% CI, 98 to 108). In the intention-to-treat analysis, the median OS was 49.6 months (95% CI, 35.1 to 59.1) in the capecitabine group compared with 36.1 months (95% CI, 29.7 to 44.2) in the observation group (adjusted hazard ratio 0.84; 95% CI, 0.67 to 1.06). In a protocol-specified sensitivity analysis, adjusting for minimization factors, nodal status, grade, and sex, the OS hazard ratio was 0.74 (95% CI, 0.59 to 0.94). We further describe the prognostic impact of R status, grade, nodal status, and sex. CONCLUSION This long-term analysis supports the previous analysis, suggesting that capecitabine can improve OS in patients with resected BTC when used as adjuvant chemotherapy after surgery and should be considered as the standard of care.
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Affiliation(s)
| | | | - Daniel H Palmer
- Molecular and Clinical Cancer Medicine, Liverpool, United Kingdom
| | | | - Raj Prasad
- Leeds Teaching Hospital NHS Trust, Leeds, United Kingdom
| | - Darius Mirza
- Birmingham Woman's and Children's NHS Trust, Birmingham, United Kingdom
| | - Alan Anthony
- Leeds Teaching Hospital NHS Trust, Leeds, United Kingdom
| | - Pippa Corrie
- Cambridge University Hospitals NHS Trust, Cambridge, United Kingdom
| | - Stephen Falk
- University Hospitals Bristol NHS Trust, Bristol, United Kingdom
| | - Meg Finch-Jones
- University Hospitals Bristol NHS Trust, Bristol, United Kingdom
| | - Harpreet Wasan
- Imperial College Healthcare NHS Trust, London, United Kingdom
| | - Paul Ross
- Guys and St Thomas's NHS Trust, London, United Kingdom
| | - Lucy Wall
- Western General Hospital, Edinburgh, United Kingdom
| | | | | | - Deborah Stocken
- Leeds Institute of Clinical Trials Research, Leeds, United Kingdom
| | - Clive Stubbs
- Cancer Clinical Trials Unit, Birmingham, United Kingdom
| | - Raaj Praseedom
- Cambridge University Hospitals NHS Foundation Trust, Cambridge, United Kingdom
| | - Yuk Ting Ma
- Institute of Immunology and Immunotherapy, Birmingham, United Kingdom
| | | | | | - Tim Iveson
- University Hospital Southampton NHS Trust, Southampton, United Kingdom
| | | | | | - Juan W Valle
- University of Manchester, Manchester, United Kingdom
| | - John Primrose
- University of Southampton, Southampton, United Kingdom
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22
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Gulizia J, Rueda M, Ovi F, Bonilla S, Prasad R, Jackson M, Gutierrez O, Pacheco W. Evaluate the effect of a commercial heat stable phytase on broiler performance, tibia ash, and mineral excretion from 1 to 49 days of age assessed using nutrient reduced diets. J APPL POULTRY RES 2022. [DOI: 10.1016/j.japr.2022.100276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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23
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Alnagar A, Daradka K, Kyrana E, Mtegha M, Palaniswamy K, Rajwal S, Mulla J, O'meara M, Karam M, Shawky A, Hakeem AR, Upasani V, Dhakshinamoorthy V, Prasad R, Attia M. Predictors of patient and graft survival following pediatric liver transplantation: Long-term analysis of more than 300 cases from single centre. Pediatr Transplant 2022; 26:e14139. [PMID: 34545678 DOI: 10.1111/petr.14139] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 08/04/2021] [Accepted: 08/28/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND Pediatric liver transplant (PLT) activity has flourished over time although with limited expansion in the graft pool. The study aims to identify pre-transplant factors that predict post-transplant patient and graft survival in the PLT population. METHODS Retrospective review of PLTs at a single tertiary transplant unit from 2000 to 2019. Univariate and multivariate analyses of pre-transplant factors were performed to identify predictors of patient and graft survival. RESULTS Two hundred and seventy-six patients received 320 PLTs. The most common cause of graft loss was hepatic artery thrombosis (n = 13, 29.6%). The most common cause of mortality was sepsis (n = 11, 29.7%). Univariate analysis showed that the following variables had a significant (p < .05) impact on patient survival: recipient age, weight, height, graft type (technical variant graft), transplant category (acute liver failure), the era of transplant, and invasive ventilation. The following variables had a significant (p < .05) impact on graft survival: recipient age, weight, height, transplant category (acute liver failure), and the era of transplant. Multivariate analysis precluded the era of transplant as the only significant factor for patient survival; patients transplanted after 2005 had significantly higher patient survival. No independent factor predicting graft survival was identified. For children transplanted after 2005, the only factor that predicted patient survival was pre-transplant invasive ventilation. CONCLUSIONS Our study suggests that the learning curve and pre-transplant invasive ventilation in the recipient have a significant impact on patient survival. The traditional view of worse outcomes of smaller PLT candidates should be changed.
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Affiliation(s)
- Amr Alnagar
- The Leeds Teaching Hospitals, NHS Foundation Trust, Leeds, UK.,General Surgery Department, Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | - Khaled Daradka
- The Leeds Teaching Hospitals, NHS Foundation Trust, Leeds, UK.,Department of General Surgery, Jordan University Hospital, The University of Jordan- Queen Rania Street, Amman, Jordan
| | - Eirini Kyrana
- The Leeds Teaching Hospitals, NHS Foundation Trust, Leeds, UK
| | - Marumbo Mtegha
- The Leeds Teaching Hospitals, NHS Foundation Trust, Leeds, UK
| | | | - Sanjay Rajwal
- The Leeds Teaching Hospitals, NHS Foundation Trust, Leeds, UK
| | - Jamila Mulla
- The Leeds Teaching Hospitals, NHS Foundation Trust, Leeds, UK
| | - Moira O'meara
- The Leeds Teaching Hospitals, NHS Foundation Trust, Leeds, UK
| | - Mohamed Karam
- General Surgery Department, Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | - Ahmed Shawky
- General Surgery Department, Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | | | - Vivek Upasani
- The Leeds Teaching Hospitals, NHS Foundation Trust, Leeds, UK
| | | | - Raj Prasad
- The Leeds Teaching Hospitals, NHS Foundation Trust, Leeds, UK
| | - Magdy Attia
- The Leeds Teaching Hospitals, NHS Foundation Trust, Leeds, UK
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24
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Elsharif M, Roche M, Wilson D, Basak S, Rowe I, Vijayanand D, Feltbower R, Treanor D, Roberts L, Guthrie A, Prasad R, Gilthorpe MS, Attia M, Sourbron S. Hepatectomy risk assessment with functional magnetic resonance imaging (HEPARIM). BMC Cancer 2021; 21:1139. [PMID: 34688256 PMCID: PMC8541801 DOI: 10.1186/s12885-021-08830-4] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Accepted: 10/04/2021] [Indexed: 11/14/2022] Open
Abstract
Background Post hepatectomy liver failure (PHLF) remains a significant risk in patients undergoing curative liver resection for cancer, however currently available PHLF risk prediction investigations are not sufficiently accurate. The Hepatectomy risk assessment with functional magnetic resonance imaging trial (HEPARIM) aims to establish if quantitative MRI biomarkers of liver function & perfusion can be used to more accurately predict PHLF risk and FLR function, measured against indocyanine green (ICG) liver function test. Methods HEPARIM is an observational cohort study recruiting patients undergoing liver resection of 2 segments or more, prior to surgery patients will have both Dynamic Gadoxetate-enhanced (DGE) liver MRI and ICG testing. Day one post op ICG testing is repeated and R15 compared to the Gadoxetate Clearance (GC) of the future liver remnant (FLR-GC) as measure by preoperative DGE- MRI which is the primary outcome, and preoperative ICG R15 compared to GC of whole liver (WL-GC) as a secondary outcome. Data will be collected from medical records, biochemistry, pathology and radiology reports and used in a multi-variate analysis to the value of functional MRI and derive multivariant prediction models for future validation. Discussion If successful, this test will potentially provide an efficient means to quantitatively assess FLR function and PHLF risk enabling surgeons to push boundaries of liver surgery further while maintaining safe practice and thereby offering chance of cure to patients who would previously been deemed inoperable. MRI has the added benefit of already being part of the routine diagnostic pathway and as such would have limited additional burden on patients time or cost to health care systems. (Hepatectomy Risk Assessment With Functional Magnetic Resonance Imaging - Full Text View -ClinicalTrials.gov, n.d.) Trial registration ClinicalTrials.gov, ClinicalTrials.gov NCT04705194 - Registered 12th January 2021 – Retrospectively registered Supplementary Information The online version contains supplementary material available at 10.1186/s12885-021-08830-4.
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Affiliation(s)
- Mohamed Elsharif
- Leeds Teaching Hospitals NHS Trust, St James University teaching Hospital, Level 6, Bexley Wing. St James's Hospital, Beckett Street, Leeds, LS9 7TF, England.
| | - Matthew Roche
- Leeds Teaching Hospitals NHS Trust, St James University teaching Hospital, Level 6, Bexley Wing. St James's Hospital, Beckett Street, Leeds, LS9 7TF, England
| | - Daniel Wilson
- Leeds Teaching Hospitals NHS Trust, St James University teaching Hospital, Level 6, Bexley Wing. St James's Hospital, Beckett Street, Leeds, LS9 7TF, England
| | - Susmita Basak
- Biomedical Imaging Sciences Department, Leeds Institute of Cardiovascular and Metabolic Medicine LIGHT Laboratories, University of Leeds, Leeds, LS2 9JT, England
| | - Ian Rowe
- Leeds Teaching Hospitals NHS Trust, St James University teaching Hospital, Level 6, Bexley Wing. St James's Hospital, Beckett Street, Leeds, LS9 7TF, England
| | - Dhakshina Vijayanand
- Leeds Teaching Hospitals NHS Trust, St James University teaching Hospital, Level 6, Bexley Wing. St James's Hospital, Beckett Street, Leeds, LS9 7TF, England
| | - Richard Feltbower
- Leeds Institute for Data Analytics, School of Medicine, University of Leeds, Worsley Building, Clarendon Way, Leeds, LS2 9NL, England
| | - Darren Treanor
- Leeds Teaching Hospitals NHS Trust, St James University teaching Hospital, Level 6, Bexley Wing. St James's Hospital, Beckett Street, Leeds, LS9 7TF, England.,Department of Clinical Pathology, and Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden.,Center for Medical Image Science and Visualization (CMIV), Linköping University, Linköping, Sweden.,Level 4, Welcome Trust Brenner Building, St. James's University Hospital, Leeds, LS9 7TF, England
| | - Lee Roberts
- Cardiovascular and Diabetes Research, Leeds Institute of Cardiovascular and Metabolic Medicine LIGHT Laboratories, University of Leeds, LS2 9JT, Leeds, England
| | - Ashley Guthrie
- Leeds Teaching Hospitals NHS Trust, St James University teaching Hospital, Level 6, Bexley Wing. St James's Hospital, Beckett Street, Leeds, LS9 7TF, England
| | - Raj Prasad
- Leeds Teaching Hospitals NHS Trust, St James University teaching Hospital, Level 6, Bexley Wing. St James's Hospital, Beckett Street, Leeds, LS9 7TF, England
| | - Mark S Gilthorpe
- Leeds Teaching Hospitals NHS Trust, St James University teaching Hospital, Level 6, Bexley Wing. St James's Hospital, Beckett Street, Leeds, LS9 7TF, England
| | - Magdy Attia
- Leeds Teaching Hospitals NHS Trust, St James University teaching Hospital, Level 6, Bexley Wing. St James's Hospital, Beckett Street, Leeds, LS9 7TF, England
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25
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Byrne A, Galhoum M, Prasad R. 764 Is Consent Valid in Common Orthopaedic Surgeries? Br J Surg 2021. [DOI: 10.1093/bjs/znab259.097] [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] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Aim
Consent is at the heart of the doctor-patient relationship. Valid consent should be voluntary, informed and the patient must have the capacity to make the decision. It is the doctor’s responsibility to ensure the patient can make an informed decision. The aim of this audit is to assess the validity of consent within Salford Royal Foundation Trust Orthopaedic department.
Method
We retrospectively reviewed 225 consent forms for four common orthopaedic trauma procedures: 44 wrist ORIF, 48 ankle fixation, 71 hip hemiarthroplasty and 62 fixations with DHS. BOA-endorsed OrthoConsent and SRFT-produced leaflets were utilised as a standard for reported surgical risks and complications. Collated patient consents were compared against these standards. Exclusion criteria included consent four and polytrauma patients.
Results
96 forms were excluded leaving 129 consent forms. In all four procedures, 86%-100% had documented infection, nerve injury and bleeding. Compartment syndrome was not documented for any wrist ORIF patients. CRPS was recorded in only 57% of wrist and 31% of ankle ORIF patients. Wound healing complications was documented in 17% of ankle ORIF. In 71% of DHS and 64% of hemiarthroplasty patients, risk of death was not recorded.
Conclusions
Targets for achieving satisfactory consent form documentation were not met and showed significant variation amongst clinicians. It suggests that patients are not being fully informed of benefits and risks of surgery. Recommendations include the introduction of posters and encouraging printing off patient information leaflets and improving education on valid consent for rotational doctors.
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Affiliation(s)
- A Byrne
- Salford Royal NHS Foundation Trust, Salford, United Kingdom
| | - M Galhoum
- Salford Royal NHS Foundation Trust, Salford, United Kingdom
| | - R Prasad
- Salford Royal NHS Foundation Trust, Salford, United Kingdom
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26
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Smith C, Williams J, Caley M, O’Toole E, Prasad R, Metherell L. 099 Ichthyosis associated with sphingosine 1-phosphate lyase deficiency is due to aberrant calcium and sphingolipid regulation. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.08.102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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27
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Knorre DA, Galkina KV, Shirokovskikh T, Banerjee A, Prasad R. Do Multiple Drug Resistance Transporters Interfere with Cell Functioning under Normal Conditions? Biochemistry (Mosc) 2021; 85:1560-1569. [PMID: 33705294 DOI: 10.1134/s0006297920120081] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Eukaryotic cells rely on multiple mechanisms to protect themselves from exogenous toxic compounds. For instance, cells can limit penetration of toxic molecules through the plasma membrane or sequester them within the specialized compartments. Plasma membrane transporters with broad substrate specificity confer multiple drug resistance (MDR) to cells. These transporters efflux toxic compounds at the cost of ATP hydrolysis (ABC-transporters) or proton influx (MFS-transporters). In our review, we discuss the possible costs of having an active drug-efflux system using yeast cells as an example. The pleiotropic drug resistance (PDR) subfamily ABC-transporters are known to constitutively hydrolyze ATP even without any substrate stimulation or transport across the membrane. Besides, some MDR-transporters have flippase activity allowing transport of lipids from inner to outer lipid layer of the plasma membrane. Thus, excessive activity of MDR-transporters can adversely affect plasma membrane properties. Moreover, broad substrate specificity of ABC-transporters also suggests the possibility of unintentional efflux of some natural metabolic intermediates from the cells. Furthermore, in some microorganisms, transport of quorum-sensing factors is mediated by MDR transporters; thus, overexpression of the transporters can also disturb cell-to-cell communications. As a result, under normal conditions, cells keep MDR-transporter genes repressed and activate them only upon exposure to stresses. We speculate that exploiting limitations of the drug-efflux system is a promising strategy to counteract MDR in pathogenic fungi.
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Affiliation(s)
- D A Knorre
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119991, Russia. .,Institute of Molecular Medicine, Sechenov First Moscow State Medical University, Moscow, 119991, Russia
| | - K V Galkina
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - T Shirokovskikh
- Faculty of Bioengineering and Bioinformatics, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - A Banerjee
- Amity Institute of Biotechnology and Amity Institute of Integrative Sciences and Health, Amity University Haryana, Amity Education Valley, Gurugram, 122413, India
| | - R Prasad
- Amity Institute of Biotechnology and Amity Institute of Integrative Sciences and Health, Amity University Haryana, Amity Education Valley, Gurugram, 122413, India
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28
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Neha, Prasad R, Singh SV. Influence of calcination atmospheres on the physicochemical properties and catalytic activity of Ni
1
Co
1
O
x
catalyst for CO oxidation. ASIA-PAC J CHEM ENG 2021. [DOI: 10.1002/apj.2634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Neha
- Department of Chemical Engineering and Technology Indian Institute of Technology (BHU) Varanasi India
| | - R. Prasad
- Department of Chemical Engineering and Technology Indian Institute of Technology (BHU) Varanasi India
| | - S. V. Singh
- Department of Chemical Engineering and Technology Indian Institute of Technology (BHU) Varanasi India
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29
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Mallik S, Prasad R, Das K, Sen P. Alcohol functionality in the fatty acid backbone of sphingomyelin guides the inhibition of blood coagulation. RSC Adv 2021; 11:3390-3398. [PMID: 35424312 PMCID: PMC8694017 DOI: 10.1039/d0ra09218e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 10/29/2020] [Accepted: 01/07/2021] [Indexed: 12/17/2022] Open
Abstract
Cell-surface sphingomyelin (SM) inhibits binary and ternary complex activity of blood coagulation by an unknown mechanism. Here we show the OH functionality of SM contributes in forming the close assembly through intermolecular H-bond and through Ca2+ chelation, which restricts the protein–lipid/protein–protein interactions and thus inhibits the coagulation procedure. Cell-surface sphingomyelin (SM) inhibits binary and ternary complex activity of blood coagulation.![]()
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Affiliation(s)
- S Mallik
- Department of Biological Chemistry, Indian Association for the Cultivation of Science 2A & 2B Raja S. C. Mullick Road, Jadavpur Kolkata-700032 India
| | - R Prasad
- Department of Biological Chemistry, Indian Association for the Cultivation of Science 2A & 2B Raja S. C. Mullick Road, Jadavpur Kolkata-700032 India
| | - K Das
- Department of Biological Chemistry, Indian Association for the Cultivation of Science 2A & 2B Raja S. C. Mullick Road, Jadavpur Kolkata-700032 India
| | - P Sen
- Department of Biological Chemistry, Indian Association for the Cultivation of Science 2A & 2B Raja S. C. Mullick Road, Jadavpur Kolkata-700032 India
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30
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Moraliyage H, De Silva D, Ranasinghe W, Adikari A, Alahakoon D, Prasad R, Lawrentschuk N, Bolton D. Cancer in Lockdown: Impact of the COVID-19 Pandemic on Patients with Cancer. Oncologist 2020; 26:e342-e344. [PMID: 33210442 PMCID: PMC7753606 DOI: 10.1002/onco.13604] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [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: 07/15/2020] [Accepted: 11/10/2020] [Indexed: 12/14/2022] Open
Abstract
The lockdown measures of the ongoing COVID‐19 pandemic have disengaged patients with cancer from formal health care settings, leading to an increased use of social media platforms to address unmet needs and expectations. Although remote health technologies have addressed some of the medical needs, the emotional and mental well‐being of these patients remain underexplored and underreported. We used a validated artificial intelligence framework to conduct a comprehensive real‐time analysis of two data sets of 2,469,822 tweets and 21,800 discussions by patients with cancer during this pandemic. Lung and breast cancer are most prominently discussed, and the most concerns were expressed regarding delayed diagnosis, cancellations, missed treatments, and weakened immunity. All patients expressed significant negative sentiment, with fear being the predominant emotion. Even as some lockdown measures ease, it is crucial that patients with cancer are engaged using social media platforms for real‐time identification of issues and the provision of informational and emotional support. Oncology patients have been severely affected by the ongoing COVID‐19 pandemic that has caused disruption in the traditional health care setting. Although remote health technologies have addressed some of the medical needs, the emotional and mental well‐being of these patients remain underreported. This article reports the primary challenges experienced by cancer patients due to COVID‐19 lockdown measures.
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Affiliation(s)
- Harsha Moraliyage
- Research Centre for Data Analytics and Cognition, La Trobe University, Melbourne, Australia
| | - Daswin De Silva
- Research Centre for Data Analytics and Cognition, La Trobe University, Melbourne, Australia
| | - Weranja Ranasinghe
- Research Centre for Data Analytics and Cognition, La Trobe University, Melbourne, Australia.,University of Texas, MD Anderson Cancer, Houston, Texas, USA
| | - Achini Adikari
- Research Centre for Data Analytics and Cognition, La Trobe University, Melbourne, Australia
| | - Damminda Alahakoon
- Research Centre for Data Analytics and Cognition, La Trobe University, Melbourne, Australia
| | - Raj Prasad
- National Health Service Trust, North Bristol, England, United Kingdom
| | - Nathan Lawrentschuk
- Department of Surgery, University of Melbourne and Olivia Newton-John Cancer Centre, Austin Hospital, Melbourne, Australia.,EJ Whitten Prostate Cancer Research Centre at Epworth Healthcare, Melbourne, Australia.,Division of Cancer Surgery, Peter MacCallum Cancer Centre, Melbourne, Australia
| | - Damien Bolton
- Department of Surgery, University of Melbourne and Olivia Newton-John Cancer Centre, Austin Hospital, Melbourne, Australia
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Taku N, Polo A, Zubizarreta E, Prasad R, Hopkins K. External Beam Radiotherapy in West Africa: 1979 - 2019. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.2444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Bosaily AES, Frangou E, Ahmed HU, Emberton M, Punwani S, Kaplan R, Brown LC, Freeman A, Jameson C, Hindley R, Peppercorn D, Thrower A, Winkler M, Barwick T, Stewart V, Burns-Cox N, Burn P, Ghei M, Kumaradevan J, Prasad R, Ash-Miles J, Shergill I, Agarwal S, Rosario D, Salim F, Bott S, Evans H, Henderson A, Ghosh S, Dudderidge T, Smart J, Tung K, Kirkham A. Additional Value of Dynamic Contrast-enhanced Sequences in Multiparametric Prostate Magnetic Resonance Imaging: Data from the PROMIS Study. Eur Urol 2020; 78:503-511. [PMID: 32312543 DOI: 10.1016/j.eururo.2020.03.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Accepted: 03/02/2020] [Indexed: 11/19/2022]
Abstract
BACKGROUND Multiparametric magnetic resonance imaging (MP-MRI) is established in the diagnosis of prostate cancer, but the need for enhanced sequences has recently been questioned. OBJECTIVE To assess whether dynamic contrast-enhanced imaging (DCE) improves accuracy over T2 and diffusion sequences. DESIGN, SETTING, AND PARTICIPANTS PROMIS was a multicentre, multireader trial, with, in this part, 497 biopsy-naïve men undergoing standardised 1.5T MP-MRI using T2, diffusion, and DCE, followed by a detailed transperineal prostate mapping (TPM) biopsy at 5 mm intervals. Likert scores of 1-5 for the presence of a significant tumour were assigned in strict sequence, for (1) T2 + diffusion and then (2) T2 + diffusion + dynamic contrast-enhanced images. OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS For the primary analysis, the primary PROMIS outcome measure (Gleason score ≥4 + 3 or ≥6 mm maximum cancer length) on TPM was used, and an MRI score of ≥3 was considered positive. RESULTS AND LIMITATIONS Sensitivity without and with DCE was 94% and 95%, specificity 37% and 38%, positive predictive value 51% and 51%, and negative predictive value 90% and 91%, respectively (p > 0.05 in each case). The number of patients avoiding biopsy (scoring 1-2) was similar (123/497 vs 121/497, p = 0.8). The number of equivocal scores (3/5) was slightly higher without DCE (32% vs 28% p = 0.031). The proportion of MRI equivocal (3/5) and positive (4-5) cases showing significant tumours were similar (23% and 71% vs 20% and 69%). No cases of dominant Gleason 4 or higher were missed with DCE, compared with a single case with T2 + diffusion-weighted imaging. No attempt was made to correlate lesion location on MRI and histology, which may be considered a limitation. Radiologists were aware of the patient's prostate-specific antigen. CONCLUSIONS Contrast adds little when MP-MRI is used to exclude significant prostate cancer. PATIENT SUMMARY An intravenous injection of contrast may not be necessary when magnetic resonance imaging is used as a test to rule out significant tumours in the prostate.
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Affiliation(s)
- Ahmed El-Shater Bosaily
- Division of Surgery and Interventional Sciences, University College London, London, UK; Department of Radiology, Royal Free NHS foundation Trust, London, UK.
| | | | - Hashim U Ahmed
- Division of Surgery and Interventional Sciences, University College London, London, UK; Imperial Prostate, Division of Surgery, Department of Surgery and Cancer, Imperial College London, London, UK; Imperial Urology, Imperial College London Healthcare NHS Trust, London, UK
| | - Mark Emberton
- Division of Surgery and Interventional Sciences, University College London, London, UK; University College Hospital NHS Foundation Trust, London, UK
| | - Shonit Punwani
- Division of Surgery and Interventional Sciences, University College London, London, UK; University College Hospital NHS Foundation Trust, London, UK
| | | | | | - Alex Freeman
- University College Hospital NHS Foundation Trust, London, UK
| | - Charles Jameson
- University College Hospital NHS Foundation Trust, London, UK
| | | | | | | | - Mathias Winkler
- Imperial Urology, Imperial College London Healthcare NHS Trust, London, UK
| | - Tara Barwick
- Department of Radiology, Imperial College London Healthcare NHS Trust, London, UK
| | - Victoria Stewart
- Department of Radiology, Imperial College London Healthcare NHS Trust, London, UK
| | - Nick Burns-Cox
- Musgrove Park Hospital, Taunton and Somerset NHS Foundation Trust, Taunton, UK
| | - Paul Burn
- Musgrove Park Hospital, Taunton and Somerset NHS Foundation Trust, Taunton, UK
| | | | | | | | | | | | | | | | | | - Simon Bott
- Frimley Health NHS Foundation Trust, Camberley, UK
| | - Hywel Evans
- Frimley Health NHS Foundation Trust, Camberley, UK
| | | | - Sukanya Ghosh
- Maidstone and Tunbridge Wells NHS Trust, Tunbridge Wells, UK
| | - Tim Dudderidge
- University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - J Smart
- University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Ken Tung
- University Hospital Southampton NHS Foundation Trust, Southampton, UK
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Maharaj A, Williams J, Bradshaw T, Güran T, Braslavsky D, Casas J, Chan LF, Metherell LA, Prasad R. Sphingosine-1-phosphate lyase (SGPL1) deficiency is associated with mitochondrial dysfunction. J Steroid Biochem Mol Biol 2020; 202:105730. [PMID: 32682944 PMCID: PMC7482430 DOI: 10.1016/j.jsbmb.2020.105730] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 07/13/2020] [Accepted: 07/14/2020] [Indexed: 01/12/2023]
Abstract
Deficiency in Sphingosine-1-phosphate lyase (S1P lyase) is associated with a multi-systemic disorder incorporating primary adrenal insufficiency (PAI), steroid resistant nephrotic syndrome and neurological dysfunction. Accumulation of sphingolipid intermediates, as seen with loss of function mutations in SGPL1, has been implicated in mitochondrial dysregulation, including alterations in mitochondrial membrane potentials and initiation of mitochondrial apoptosis. For the first time, we investigate the impact of S1P lyase deficiency on mitochondrial morphology and function using patient-derived human dermal fibroblasts and CRISPR engineered SGPL1-knockout HeLa cells. Reduced cortisol output in response to progesterone stimulation was observed in two patient dermal fibroblast cell lines. Mass spectrometric analysis of patient dermal fibroblasts revealed significantly elevated levels of sphingosine-1-phosphate, sphingosine, ceramide species and sphingomyelin when compared to control. Total mitochondrial volume was reduced in both S1P lyase deficient patient and HeLa cell lines. Mitochondrial dynamics and parameters of oxidative phosphorylation were altered when compared to matched controls, though differentially across the cell lines. Mitochondrial dysfunction may represent a major event in the pathogenesis of this disease, associated with severity of phenotype.
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Affiliation(s)
- A Maharaj
- Centre for Endocrinology, William Harvey Research Institute, John Vane Science Centre, Queen Mary, University of London, Charterhouse Square, London, United Kingdom
| | - J Williams
- Centre for Endocrinology, William Harvey Research Institute, John Vane Science Centre, Queen Mary, University of London, Charterhouse Square, London, United Kingdom
| | - T Bradshaw
- Centre for Endocrinology, William Harvey Research Institute, John Vane Science Centre, Queen Mary, University of London, Charterhouse Square, London, United Kingdom
| | - T Güran
- Marmara University, School of Medicine, Department of Paediatric Endocrinology and Diabetes, Istanbul, Turkey
| | - D Braslavsky
- Centro de Investigaciones Endocrinológicas "Dr. Cesar Bergadá" (CEDIE) - CONICET - FEI - División de Endocrinología, Hospital de Niños "Ricardo Gutiérrez", Buenos Aires, Argentina
| | - J Casas
- Research Unit on BioActive Molecules (RUBAM), Department of Biomedicinal Chemistry, IQAC-CSIC, Jordi Girona 18-26, Barcelona, Spain
| | - L F Chan
- Centre for Endocrinology, William Harvey Research Institute, John Vane Science Centre, Queen Mary, University of London, Charterhouse Square, London, United Kingdom
| | - L A Metherell
- Centre for Endocrinology, William Harvey Research Institute, John Vane Science Centre, Queen Mary, University of London, Charterhouse Square, London, United Kingdom
| | - R Prasad
- Centre for Endocrinology, William Harvey Research Institute, John Vane Science Centre, Queen Mary, University of London, Charterhouse Square, London, United Kingdom.
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Prasad R, Prasad SB. Histoprotective effect of rutin against cisplatin-induced toxicities in tumor-bearing mice: Rutin lessens cisplatin-induced toxicities. Hum Exp Toxicol 2020; 40:245-258. [PMID: 32787450 DOI: 10.1177/0960327120947793] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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: 11/17/2022]
Abstract
Cisplatin is an effective anticancer drug used against a variety of cancers. The full therapeutic potential of cisplatin is often hampered due to concurrent development of various side effects in the hosts. Rutin, a naturally occurring bioflavonoid shows several pharmacological activities. It has been earlier reported by us that rutin and cisplatin in combination show better antitumor activity against murine ascites Dalton's lymphoma. As cisplatin is given to cancer-bearing hosts only, the present study was undertaken to explore the histoprotective effect of rutin against some toxicities induced by cisplatin in tumor-bearing mice. Cisplatin treatment caused severe damages in tissue architecture such as degenerated hepatocytes with nuclear condensation and sinusoidal dilatation in the liver, glomerular deterioration, infiltration of cells, and tubular congestion in the kidney, and vacuolization of Sertoli cells or dense granules in the cytoplasm and damaged seminiferous tubules in the testes. In the rutin plus cisplatin combination-treated mice, all the abnormal tissue architectural features were decreased. Further, as compared to cisplatin treatment, combination treatment did not show any significant elevation in the liver functional biomarkers (serum aspartate aminotransferase, alanine aminotransferase and alkaline phosphatase) and renal functional biomarkers (serum urea and creatinine levels). The combination treatment reduced the sperm abnormalities also as compared to the cisplatin alone treatment. The in vitro hemolysis assay of red blood cells and scanning electron microscopy revealed that combination treatment lessened the cisplatin-induced hemolysis and abnormalities in RBCs. Thus, the present findings demonstrate that rutin has histoprotective ability against cisplatin-induced toxicities in tumor-bearing mice.
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Affiliation(s)
- R Prasad
- Cell and Tumor Biology Laboratory, Department of Zoology, School of Life Sciences, 29666North-Eastern Hill University, Shillong, India
| | - S B Prasad
- Cell and Tumor Biology Laboratory, Department of Zoology, School of Life Sciences, 29666North-Eastern Hill University, Shillong, India
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Austin K, Prasad R. AB1271 PATIENT EDUCATION IN PSORIATIC ARTHRITIS: A SERVICE EVALUATION AT ONE YEAR. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.5032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Recent studies have demonstrated an increasing burden of musculoskeletal (MSK) diseases worldwide.1The importance of patient education (PE) is often overlooked in the management of long term inflammatory conditions. The European League Against Rheumatism recommends that PE should be integral to standard of care in inflammatory arthritis.2PE increases patients’ knowledge, skills and confidence in managing their condition and improves patient activation (PA). Evidence shows that improved PA results in better outcomes and improved experiences of care. We previously reported on improved knowledge and confidence amongst a small patient group with psoriatic arthritis (PsA) who had attended a pilot education session.3This education session was delivered to a wider group of patients with PsA over a 12 month period; we report on the evaluation received from this service.Objectives:To provide a PE programme to a wider group of patients with PsA, using a multi-disciplinary team (MDT) approach and to evaluate whether this improved patients’ knowledge, skills and confidence in managing their PsA.Methods:Adult patients with PsA attending their rheumatology clinic appointments were invited to a 2.5 hour MDT education session which covered: 1) a general overview of PsA; 2) medications used in PsA; 3) the role of physiotherapy and occupational therapy; 4) flares and self- management. These were interactive sessions, held in a small group setting to allow for informal discussion and questions to the MDT. Written materials including several booklets and online resources were also provided. Patients evaluated their knowledge or understanding before and after each topic covered, on the same day, using an evaluation tool with1-10 Likert scale items. Changes in ratings were analysed using student’s t-tests. Patients were also asked: which aspects they found particularly helpful; if there was anything they would like to have added/ have more of in the session; whether they found the session helpful; whether they would recommend it to other patients; whether they would be interested in developing a PsA patient support group.Results:Four sessions were held over a 12 month period. A total of 32 patients attended; 10 males and 22 females, across a range of age categories. Disease duration varied from less than1 year to over 10 years. There were statistically significant improvements in all topics covered: mean improvement of 91% in how well informed patients felt about PsA overall (p<0.0001); mean improvement of 74% in confidence in accessing help from the MDT (p<0.0001); mean improvement of 122% in how well informed patients were about medications used in PsA (p<0.0001); mean improvement of 99% in patients’ confidence in self-managing a flare (p<0.0001). Aspects that patients found particularly helpful included “The whole session”, “Asking questions to all different professionals”, “Meeting other sufferers”, “Management of flares”, “Fatigue information” and “Online resources”. Overall, 97% of patients (31 out of 32) found the session helpful and would recommend it to others. Over 40% of patients expressed interest in developing a local PsA support group.Conclusion:Following a 2.5 hour education session, improved knowledge, skills and confidence in managing their PsA was reported by 97% of patients, including patients with disease duration of > 10 years. This supports our previous finding that an interactive, group PsA education programme is a feasible and important adjunct to patient care.References:[1]Sebbag E, Felten R, Sagez F, et al. The world-wide burden of musculoskeletal diseases: a systematic analysis of the World Health Organization Burden of Diseases Database. Annals of the Rheumatic Diseases 2019;78:844-848.[2]Zangi HA, Ndosi M, Adams J, et al. EULAR recommendations for patient education for people with inflammatory arthritis. Ann Rheum Dis. 2015;74(6):954-62[3]Austin K, Jones N, Prasad R. Patient Education in psoriatic arthritis: addressing an unmet need. Ann Rheum Dis. 2019;78(suppl 2):A2134.Disclosure of Interests:Keziah Austin: None declared, Roopa Prasad Speakers bureau: Received speaker fees for Celgene, honorarium from Merck, advisory board fees from Bristol-Myers Squibb; all unrelated to the contents of this abstract.
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Mehta U, Prasad R, Kothari K. VARIOUS ANALYTICAL MODELS FOR SUPERCAPACITORS: A MATHEMATICAL STUDY. REFFIT 2020. [DOI: 10.18799/24056537/2020/1/218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Supercapacitors (SCs) are used extensively in high-power potential energy applications like renewable energy systems, electric vehicles, power electronics, and many other industrial applications. This is due to SCs containing high-power density and the ability to respond spontaneously with fast charging and discharging demands. Advancements in material and fabrication techniques have induced a scope for research to improve the application of SCs. Many researchers have studied various SC properties and their effects on energy storage and management performance. In this paper, various fractional calculus-based SC models are summarized, with emphasis on analytical studies from derived classical SC models. Study prevails such parameterized resistor–capacitor networks have simplified the representation of electrical behavior of SCs to deal with the complicated internal structure. Fractional calculus has been used to develop SC models with the aim of understanding their complicated structure. Finally, the properties of different SC models utilized by various researchers to understand the behavior of SCs are listed using an equivalent circuit.
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Davidson B, Gurusamy K, Corrigan N, Croft J, Ruddock S, Pullan A, Brown J, Twiddy M, Birtwistle J, Morris S, Woodward N, Bandula S, Hochhauser D, Prasad R, Olde Damink S, Coolson M, Laarhoven KV, de Wilt JH. Liver resection surgery compared with thermal ablation in high surgical risk patients with colorectal liver metastases: the LAVA international RCT. Health Technol Assess 2020; 24:1-38. [PMID: 32370822 DOI: 10.3310/hta24210] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [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: 02/06/2023] Open
Abstract
BACKGROUND Although surgical resection has been considered the only curative option for colorectal liver metastases, thermal ablation has recently been suggested as an alternative curative treatment. There have been no adequately powered trials comparing surgery with thermal ablation. OBJECTIVES Main objective - to compare the clinical effectiveness and cost-effectiveness of thermal ablation versus liver resection surgery in high surgical risk patients who would be eligible for liver resection. Pilot study objectives - to assess the feasibility of recruitment (through qualitative study), to assess the quality of ablations and liver resection surgery to determine acceptable standards for the main trial and to centrally review the reporting of computed tomography scan findings relating to ablation and outcomes and recurrence rate in both arms. DESIGN A prospective, international (UK and the Netherlands), multicentre, open, pragmatic, parallel-group, randomised controlled non-inferiority trial with a 1-year internal pilot study. SETTING Tertiary liver, pancreatic and gallbladder (hepatopancreatobiliary) centres in the UK and the Netherlands. PARTICIPANTS Adults with a specialist multidisciplinary team diagnosis of colorectal liver metastases who are at high surgical risk because of their age, comorbidities or tumour burden and who would be suitable for liver resection or thermal ablation. INTERVENTIONS Thermal ablation conducted as per local policy (but centres were encouraged to recruit within Cardiovascular and Interventional Radiological Society of Europe guidelines) versus surgical liver resection performed as per centre protocol. MAIN OUTCOME MEASURES Pilot study - patients' and clinicians' acceptability of the trial to assist in optimisation of recruitment. Primary outcome - disease-free survival at 2 years post randomisation. Secondary outcomes - overall survival, timing and site of recurrence, additional therapy after treatment failure, quality of life, complications, length of hospital stay, costs, trial acceptability, and disease-free survival measured from end of intervention. It was planned that 5-year survival data would be documented through record linkage. Randomisation was performed by minimisation incorporating a random element, and this was a non-blinded study. RESULTS In the pilot study over 1 year, a total of 366 patients with colorectal liver metastases were screened and 59 were considered eligible. Only nine participants were randomised. The trial was stopped early and none of the planned statistical analyses was performed. The key issues inhibiting recruitment included fewer than anticipated patients eligible for both treatments, misconceptions about the eligibility criteria for the trial, surgeons' preference for one of the treatments ('lack of clinical equipoise' among some of the surgeons in the centre) with unconscious bias towards surgery, patients' preference for one of the treatments, and lack of dedicated research nurses for the trial. CONCLUSIONS Recruitment feasibility was not demonstrated during the pilot stage of the trial; therefore, the trial closed early. In future, comparisons involving two very different treatments may benefit from an initial feasibility study or a longer period of internal pilot study to resolve these difficulties. Sufficient time should be allowed to set up arrangements through National Institute for Health Research (NIHR) Research Networks. TRIAL REGISTRATION Current Controlled Trials ISRCTN52040363. FUNDING This project was funded by the NIHR Health Technology Assessment programme and will be published in full in Health Technology Assessment; Vol. 24, No. 21. See the NIHR Journals Library website for further project information.
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Affiliation(s)
- Brian Davidson
- Royal Free Campus, Division of Surgery and Interventional Science, University College London, London, UK
| | - Kurinchi Gurusamy
- Royal Free Campus, Division of Surgery and Interventional Science, University College London, London, UK
| | - Neil Corrigan
- Clinical Trials Research Unit, Leeds Institute of Clinical Trials Research, University of Leeds, Leeds, UK
| | - Julie Croft
- Clinical Trials Research Unit, Leeds Institute of Clinical Trials Research, University of Leeds, Leeds, UK
| | - Sharon Ruddock
- Clinical Trials Research Unit, Leeds Institute of Clinical Trials Research, University of Leeds, Leeds, UK
| | - Alison Pullan
- Clinical Trials Research Unit, Leeds Institute of Clinical Trials Research, University of Leeds, Leeds, UK
| | - Julia Brown
- Clinical Trials Research Unit, Leeds Institute of Clinical Trials Research, University of Leeds, Leeds, UK
| | - Maureen Twiddy
- Leeds Institute of Health Sciences, University of Leeds, Leeds, UK.,Institute of Clinical and Applied Health Research, Faculty of Health Science, University of Hull, Hull, UK
| | | | - Stephen Morris
- Department of Applied Health Research, University College London, London, UK
| | | | | | | | - Raj Prasad
- Surgery and Transplantation, Leeds Teaching Hospital, Leeds, UK
| | | | - Marielle Coolson
- General Surgery, Maastricht University, Maastricht, the Netherlands
| | - K van Laarhoven
- Surgery, Radboud University Medical Centre, Nijmegen, the Netherlands
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Shankar PS, Korukonda K, Bendre S, Behera D, Mirchandani L, Awad NT, Prasad R, Bhargava S, Sharma OP, Jindal SK. Diagnoses and management of adult cough: An Indian Environmental Medical Association (EMA) position paper. Respir Med 2020; 168:105949. [PMID: 32469706 DOI: 10.1016/j.rmed.2020.105949] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 02/24/2020] [Accepted: 03/27/2020] [Indexed: 01/23/2023]
Abstract
BACKGROUND Cough is a common yet distressing symptom that results in significant health care costs from outpatient visits and related consultations. OBJECTIVE The understanding of the pathobiology of cough in recent times has undergone an evolution with Cough hypersensitivity syndrome (CHS) being suggested in most cases of dry cough. However, in the case of productive cough, ancillary mechanisms including impaired Mucociliary clearance, in addition to hypermucosecretory bronchospastic conditions of Smoker's cough, asthma-COPD overlap, bronchiectasis, and allergic bronchopulmonary aspergillosis, need to be critically addressed while optimizing patient care with symptomatic therapy in outpatient settings of India. METHODS In this review, evidence-based graded recommendations on use of antitussives - & protussives as a Position Paper were developed based on the Level and Quality of Scientific evidence as per Agency for Health Care and Quality (AHRQ) criteria listing and Expert opinions offered by a multidisciplinary EMA panel in India. RESULTS Management of acute or chronic cough involves addressing common issues of environmental exposures and patient concerns before instituting supportive therapy with antitussives or bronchodilatory cough formulations containing mucoactives, anti-inflammatory, or short-acting beta-2 agonist agents. CONCLUSION The analyses provides a real world approach to the management of acute or chronic cough in various clinical conditions with pro- or antitussive agents while avoiding their misuse in empirical settings.
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Affiliation(s)
- P S Shankar
- Emeritus Professor of Medicine, & Senior CEO, KBN Institute of Medical Sciences, Kalaburagi, Karnataka, India
| | | | - S Bendre
- Respiratory Medicine, Nanavati Hospital, Mumbai, India
| | - D Behera
- Respiratory Medicine, PGIMER, Chandigarh, India
| | - L Mirchandani
- Respiratory Medicine, KJ Somaiya Medical College, Mumbai, India
| | - N T Awad
- Respiratory Medicine, LT M Medical College, Mumbai, India
| | - R Prasad
- Director Medical Education & Head Pulm Med, Era's Lucknow Medical College & Hospital, Lucknow, UP, India
| | - S Bhargava
- Respiratory Medicine, Mahatma Gandhi Medical College, Indore, MP, India
| | - O P Sharma
- National Professor of Geriatrics, Secretary: Geriatric Society of India, Delhi, India
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Millson C, Considine A, Cramp ME, Holt A, Hubscher S, Hutchinson J, Jones K, Leithead J, Masson S, Menon K, Mirza D, Neuberger J, Prasad R, Pratt A, Prentice W, Shepherd L, Simpson K, Thorburn D, Westbrook R, Tripathi D. Adult liver transplantation: UK clinical guideline - part 2: surgery and post-operation. Frontline Gastroenterol 2020; 11:385-396. [PMID: 32879722 PMCID: PMC7447281 DOI: 10.1136/flgastro-2019-101216] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 09/01/2019] [Accepted: 09/30/2019] [Indexed: 02/06/2023] Open
Abstract
Survival rates for patients following liver transplantation exceed 90% at 12 months and approach 70% at 10 years. Part 1 of this guideline has dealt with all aspects of liver transplantation up to the point of placement on the waiting list. Part 2 explains the organ allocation process, organ donation and organ type and how this influences the choice of recipient. After organ allocation, the transplant surgery and the critical early post-operative period are, of necessity, confined to the liver transplant unit. However, patients will eventually return to their referring secondary care centre with a requirement for ongoing supervision. Part 2 of this guideline concerns three key areas of post liver transplantation care for the non-transplant specialist: (1) overseeing immunosuppression, including interactions and adherence; (2) the transplanted organ and how to initiate investigation of organ dysfunction; and (3) careful oversight of other organ systems, including optimising renal function, cardiovascular health and the psychosocial impact. The crucial significance of this holistic approach becomes more obvious as time passes from the transplant, when patients should expect the responsibility for managing the increasing number of non-liver consequences to lie with primary and secondary care.
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Affiliation(s)
- Charles Millson
- Department of Hepatology, York Teaching Hospitals NHS Foundation Trust, York, UK
| | - Aisling Considine
- Pharmacy department, King's College Hospital NHS Foundation Trust, London, UK
| | - Matthew E Cramp
- South West Liver Unit, Plymouth Hospitals NHS Trust, Plymouth, UK
| | - Andrew Holt
- Liver Unit, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - Stefan Hubscher
- Department of Cellular Pathology, University of Birmingham, Birmingham, UK
| | - John Hutchinson
- Department of Hepatology, York Teaching Hospitals NHS Foundation Trust, York, UK
| | - Kate Jones
- Liver Transplantation Service, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Joanna Leithead
- Department of Hepatology, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Steven Masson
- Liver Unit, The Newcastle Upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Krish Menon
- Liver Transplantation & HPB Surgery, King’s College Hospital NHS Foundation Trust, London, UK
| | - Darius Mirza
- Liver Transplantation & HPB surgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - James Neuberger
- Liver Unit, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - Raj Prasad
- Liver Transplantation & HPB Surgery, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Anthony Pratt
- Pharmacy Department, York Teaching Hospital NHS Foundation Trust, York, UK
| | - Wendy Prentice
- Palliative Care Medicine, King’s College Hospital NHS Foundation Trust, London, UK
| | - Liz Shepherd
- Liver Transplantation Service, Royal Free London NHS Foundation Trust, London, UK
| | - Ken Simpson
- Scottish Liver Transplant Unit, Royal Infirmary of Edinburgh, Edinburgh, UK
| | - Doug Thorburn
- Department of Hepatology, Royal Free London NHS Foundation Trust, London, UK
| | - Rachel Westbrook
- Department of Hepatology, Royal Free London NHS Foundation Trust, London, UK
| | - Dhiraj Tripathi
- Liver Unit, University Hospitals Birmingham NHS Foundation Trust, Birminghams, UK
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Millson C, Considine A, Cramp ME, Holt A, Hubscher S, Hutchinson J, Jones K, Leithead J, Masson S, Menon K, Mirza D, Neuberger J, Prasad R, Pratt A, Prentice W, Shepherd L, Simpson K, Thorburn D, Westbrook R, Tripathi D. Adult liver transplantation: A UK clinical guideline - part 1: pre-operation. Frontline Gastroenterol 2020; 11:375-384. [PMID: 32879721 PMCID: PMC7447286 DOI: 10.1136/flgastro-2019-101215] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 10/07/2019] [Accepted: 10/09/2019] [Indexed: 02/04/2023] Open
Abstract
Liver transplantation is a highly successful treatment for all types of liver failure, some non-liver failure indications and liver cancer. Most referrals come from secondary care. This first part of a two-part guideline outlines who to refer, and how that referral should be made, including patient details and additional issues such as those relevant to alcohol and drug misuse. The process of liver transplant assessment involves the confirmation of the diagnosis and non-reversibility, an evaluation of comorbidities and exclusion of contraindications. Finally, those making it onto the waiting list require monitoring and optimising. Underpinning this process is a need for good communication between patient, their carers, secondary care and the liver transplant service, synchronised by the transplant coordinator. Managing expectation and balancing the uncertainty of organ availability against the inevitable progression of underlying liver disease requires sensitivity and honesty from all healthcare providers and the assessment of palliative care needs is an integral part of this process.
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Affiliation(s)
- Charles Millson
- Department of Hepatology, York Teaching Hospitals NHS Foundation Trust, York, UK
| | - Aisling Considine
- Pharmacy department, King's College Hospital NHS Foundation Trust, London, UK
| | - Matthew E Cramp
- South West Liver Unit, Plymouth Hospitals NHS Trust, Plymouth, UK
| | - Andrew Holt
- Liver Unit, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - Stefan Hubscher
- Department of Cellular Pathology, University of Birmingham, Birmingham, UK
| | - John Hutchinson
- Department of Hepatology, York Teaching Hospitals NHS Foundation Trust, York, UK
| | - Kate Jones
- Liver Transplantation Service, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Joanna Leithead
- Department of Hepatology, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Steven Masson
- Liver Unit, The Newcastle Upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Krish Menon
- Liver Transplantation & HPB Surgery, King's College Hospital NHS Foundation Trust, London, UK
| | - Darius Mirza
- Liver Transplantation & HPB surgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - James Neuberger
- Liver Unit, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - Raj Prasad
- Liver Transplantation & HPB Surgery, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Anthony Pratt
- Pharmacy department, York Teaching Hospitals NHS Foundation Trust, York, UK
| | - Wendy Prentice
- Palliative Care Medicine, King's College Hospital NHS Foundation Trust, London, UK
| | - Liz Shepherd
- Liver Transplantation Service, Royal Free London NHS Foundation Trust, London, UK
| | - Ken Simpson
- Scottish Liver Transplant Unit, Royal Infirmary of Edinburgh, Edinburgh, UK
| | - Doug Thorburn
- Department of Hepatology, Royal Free London NHS Foundation Trust, London, UK
| | - Rachel Westbrook
- Department of Hepatology, Royal Free London NHS Foundation Trust, London, UK
| | - Dhiraj Tripathi
- Liver Unit, University Hospitals Birmingham NHS Foundation Trust, Birminghams, UK
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van der Scheun FC, Nagelkerke MCM, Kilaru A, Shridhar V, Prasad R, van der Werf TS. Stigma among healthcare workers towards hepatitis B infection in Bangalore, India: a qualitative study. BMC Health Serv Res 2019; 19:736. [PMID: 31640692 PMCID: PMC6805630 DOI: 10.1186/s12913-019-4606-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Accepted: 10/02/2019] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND With about 50 million people infected with hepatitis B (HBV) in India the burden of disease is high. Stigma has been identified to have a major negative impact on screening, diagnosis and treatment of hepatitis B patients. The aim of this study was to assess the stigma in nurses and physicians in Bangalore, India; studies on stigma in HBV have only been published outside of India. METHODS Semi-structured in-depth-interviews were conducted in the period of March 20th and April 16th 2018 to study stigma and other problems in the care of hepatitis B patients. Stigma was pragmatically defined as a mark of disgrace associated with having a hepatitis B infection. Thirty physicians and nurses in different clinics and hospitals across the city of Bangalore were selected by purposeful sampling and snowball effect until theoretical saturation was reached. RESULTS The following themes were identified during the interviews: feelings when treating a patient; pregnancy and marriage; confidentiality; morality; improvement in care and the difference with HIV. The most stigma was discovered in the theme morality. The majority of our participants mentioned lack of awareness as biggest obstacle in health care of hepatitis B patients. CONCLUSIONS This is the first qualitative study in India exploring hepatitis B stigma among health care workers. Stigma was found in certain themes, such as morality. Though, no unwillingness to treat was found. There was a general lack of awareness amongst patients according to our participants and could jeopardize proper treatment. These results will further help in developing strategies to tackle hepatitis B in India.
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Affiliation(s)
- F C van der Scheun
- University of Groningen, Faculty of Medical Sciences, Antonius Deusinglaan 1, 9713, AV, Groningen, the Netherlands.
| | - M C M Nagelkerke
- University of Groningen, Faculty of Medical Sciences, Antonius Deusinglaan 1, 9713, AV, Groningen, the Netherlands
| | - A Kilaru
- PCMH Restore Health Center, Bangalore, India
| | - V Shridhar
- PCMH Restore Health Center, Bangalore, India
| | - R Prasad
- PCMH Restore Health Center, Bangalore, India.,Academy of Family Physicians of India (AFPI), Karnataka, India
| | - T S van der Werf
- University of Groningen, Faculty of Medical Sciences, Antonius Deusinglaan 1, 9713, AV, Groningen, the Netherlands
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Joshi D, Prasad R, Dash P, Mishra V, Chaurasia R, Pathak A. An interesting association of Guillain Barre syndrome in uncontrolled diabetes mellitus. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.1323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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McVeigh LE, Wijetunga I, Ingram N, Marston G, Prasad R, Markham AF, Coletta PL. Development of orthotopic tumour models using ultrasound-guided intrahepatic injection. Sci Rep 2019; 9:9904. [PMID: 31289364 PMCID: PMC6616610 DOI: 10.1038/s41598-019-46410-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Accepted: 06/25/2019] [Indexed: 01/19/2023] Open
Abstract
Mouse models of human diseases are an essential part of the translational pipeline. Orthotopic tumour mouse models are increasingly being used in cancer research due to their increased clinical relevance over subcutaneous xenograft models, particularly in relation to metastatic disease. In this study, we have developed orthotopic colorectal cancer liver metastases (CRCLM) and primary cholangiocarcinoma (CCA) models in BALB/c nude mice using minimally invasive ultrasound-guided intrahepatic injection. Due to its minimally invasive nature, the method reduced risk from surgical complications whilst being fast and easy to perform and resulted in measurable tumour volumes 1 to 3 weeks post-injection. Tumour volumes were monitored in vivo by weekly high-frequency ultrasound (HF-US) and/or twice weekly bioluminescence imaging (BLI) and confirmed with end-point histology. Take rates were high for human CRC cells (>73%) and for CCA cells (90%). We have demonstrated that this method reliably induces CRCLM and CCAs, in which tumour volume can be monitored throughout using HF-US and/or BLI. This provides a promising experimental tool for future testing of cancer therapeutics in an orthotopic model.
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Affiliation(s)
- L E McVeigh
- Leeds Institute of Medical Research, St James's University Hospital, Leeds, LS9 7TF, UK.
| | - I Wijetunga
- Leeds Institute of Medical Research, St James's University Hospital, Leeds, LS9 7TF, UK
| | - N Ingram
- Leeds Institute of Medical Research, St James's University Hospital, Leeds, LS9 7TF, UK
| | - G Marston
- Leeds Institute of Medical Research, St James's University Hospital, Leeds, LS9 7TF, UK
| | - R Prasad
- Department of Hepatobiliary and Transplant Surgery, St. James's University Hospital, Leeds, LS9 7TF, UK
| | - A F Markham
- Leeds Institute of Medical Research, St James's University Hospital, Leeds, LS9 7TF, UK
| | - P L Coletta
- Leeds Institute of Medical Research, St James's University Hospital, Leeds, LS9 7TF, UK
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Gupta S, Prasad R, Yuen S, Lynnhtun K, Rutherford N, Dickson S. OUTCOME AFTER SALVAGE RADIOTHERAPY TO FDG-PET/CT AVID DISEASE POST CHEMOTHERAPY IN ADVANCED STAGE DIFFUSE LARGE B-CELL LYMPHOMA (DLBCL). Hematol Oncol 2019. [DOI: 10.1002/hon.94_2631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- S.A. Gupta
- Radiation Oncology; Calvary Mater Hospital; Waratah Australia
| | - R. Prasad
- Haematology; Calvary Mater Hospital; Waratah Australia
| | - S. Yuen
- Haematology; Calvary Mater Hospital; Waratah Australia
| | - K. Lynnhtun
- Pathology; John Hunter Hospital; New Lambton Heights Australia
| | - N. Rutherford
- Nuclear Medicine; Calvary Mater Hospital; Waratah Australia
| | - S. Dickson
- Radiation Oncology; Calvary Mater Hospital; Waratah Australia
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Schwind KM, Aktan E, Prasad R, Cerchez M, Eversheim D, Willi O, Aurand B. An online beam profiler for laser-accelerated protons. Rev Sci Instrum 2019; 90:053307. [PMID: 31153256 DOI: 10.1063/1.5086248] [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] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 05/07/2019] [Indexed: 06/09/2023]
Abstract
The design and operation of an online energy and spatially resolving detector based on three different scintillators for laser-driven protons are described. The device can be used for a multi-Hertz recording rate. The spatial resolution is <0.5 mm, allowing to retrieve details of the proton beam which is of interest, e.g., for radiographic applications. At the same time, the particle energy is divided into three energy bands between 1 MeV and 5 MeV to retrieve the proton energy spectrum. The absolute response of the detector was calibrated at a conventional proton accelerator.
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Affiliation(s)
- K M Schwind
- Institut für Laser- und Plasmaphysik, Heinrich-Heine-Universität, 40225 Düsseldorf, Germany
| | - E Aktan
- Institut für Laser- und Plasmaphysik, Heinrich-Heine-Universität, 40225 Düsseldorf, Germany
| | - R Prasad
- Institut für Laser- und Plasmaphysik, Heinrich-Heine-Universität, 40225 Düsseldorf, Germany
| | - M Cerchez
- Institut für Laser- und Plasmaphysik, Heinrich-Heine-Universität, 40225 Düsseldorf, Germany
| | - D Eversheim
- Helmholtz-Institut für Strahlen- und Kernphysik, Rheinische Friedrich-Wilhelms Universität, 53115 Bonn, Germany
| | - O Willi
- Institut für Laser- und Plasmaphysik, Heinrich-Heine-Universität, 40225 Düsseldorf, Germany
| | - B Aurand
- Institut für Laser- und Plasmaphysik, Heinrich-Heine-Universität, 40225 Düsseldorf, Germany
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Primrose JN, Fox RP, Palmer DH, Malik HZ, Prasad R, Mirza D, Anthony A, Corrie P, Falk S, Finch-Jones M, Wasan H, Ross P, Wall L, Wadsley J, Evans JTR, Stocken D, Praseedom R, Ma YT, Davidson B, Neoptolemos JP, Iveson T, Raftery J, Zhu S, Cunningham D, Garden OJ, Stubbs C, Valle JW, Bridgewater J. Capecitabine compared with observation in resected biliary tract cancer (BILCAP): a randomised, controlled, multicentre, phase 3 study. Lancet Oncol 2019; 20:663-673. [PMID: 30922733 DOI: 10.1016/s1470-2045(18)30915-x] [Citation(s) in RCA: 650] [Impact Index Per Article: 130.0] [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: 09/19/2018] [Revised: 11/28/2018] [Accepted: 11/29/2018] [Indexed: 02/06/2023]
Abstract
BACKGROUND Despite improvements in multidisciplinary management, patients with biliary tract cancer have a poor outcome. Only 20% of patients are eligible for surgical resection with curative intent, with 5-year overall survival of less than 10% for all patients. To our knowledge, no studies have described a benefit of adjuvant therapy. We aimed to determine whether adjuvant capecitabine improved overall survival compared with observation following surgery for biliary tract cancer. METHODS This randomised, controlled, multicentre, phase 3 study was done across 44 specialist hepatopancreatobiliary centres in the UK. Eligible patients were aged 18 years or older and had histologically confirmed cholangiocarcinoma or muscle-invasive gallbladder cancer who had undergone a macroscopically complete resection (which includes liver resection, pancreatic resection, or, less commonly, both) with curative intent, and an Eastern Cooperative Oncology Group performance status of less than 2. Patients who had not completely recovered from previous surgery or who had previous chemotherapy or radiotherapy for biliary tract cancer were also excluded. Patients were randomly assigned 1:1 to receive oral capecitabine (1250 mg/m2 twice daily on days 1-14 of a 21-day cycle, for eight cycles) or observation commencing within 16 weeks of surgery. Treatment was not masked, and allocation concealment was achieved with a computerised minimisation algorithm that stratified patients by surgical centre, site of disease, resection status, and performance status. The primary outcome was overall survival. As prespecified, analyses were done by intention to treat and per protocol. This study is registered with EudraCT, number 2005-003318-13. FINDINGS Between March 15, 2006, and Dec 4, 2014, 447 patients were enrolled; 223 patients with biliary tract cancer resected with curative intent were randomly assigned to the capecitabine group and 224 to the observation group. The data cutoff for this analysis was March 6, 2017. The median follow-up for all patients was 60 months (IQR 37-60). In the intention-to-treat analysis, median overall survival was 51·1 months (95% CI 34·6-59·1) in the capecitabine group compared with 36·4 months (29·7-44·5) in the observation group (adjusted hazard ratio [HR] 0·81, 95% CI 0·63-1·04; p=0·097). In a protocol-specified sensitivity analysis, adjusting for minimisation factors and nodal status, grade, and gender, the overall survival HR was 0·71 (95% CI 0·55-0·92; p=0·010). In the prespecified per-protocol analysis (210 patients in the capecitabine group and 220 in the observation group), median overall survival was 53 months (95% CI 40 to not reached) in the capecitabine group and 36 months (30-44) in the observation group (adjusted HR 0·75, 95% CI 0·58-0·97; p=0·028). In the intention-to-treat analysis, median recurrence-free survival was 24·4 months (95% CI 18·6-35·9) in the capecitabine group and 17·5 months (12·0-23·8) in the observation group. In the per-protocol analysis, median recurrence-free survival was 25·9 months (95% CI 19·8-46·3) in the capecitabine group and 17·4 months (12·0-23·7) in the observation group. Adverse events were measured in the capecitabine group only, and of the 213 patients who received at least one cycle, 94 (44%) had at least one grade 3 toxicity, the most frequent of which were hand-foot syndrome in 43 (20%) patients, diarrhoea in 16 (8%) patients, and fatigue in 16 (8%) patients. One (<1%) patient had grade 4 cardiac ischaemia or infarction. Serious adverse events were observed in 47 (21%) of 223 patients in the capecitabine group and 22 (10%) of 224 patients in the observation group. No deaths were deemed to be treatment related. INTERPRETATION Although this study did not meet its primary endpoint of improving overall survival in the intention-to-treat population, the prespecified sensitivity and per-protocol analyses suggest that capecitabine can improve overall survival in patients with resected biliary tract cancer when used as adjuvant chemotherapy following surgery and could be considered as standard of care. Furthermore, the safety profile is manageable, supporting the use of capecitabine in this setting. FUNDING Cancer Research UK and Roche.
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Affiliation(s)
- John N Primrose
- Department of Surgery, University of Southampton, Southampton, UK.
| | - Richard P Fox
- Cancer Research UK Clinical Trials Unit, University of Birmingham, Birmingham, UK
| | - Daniel H Palmer
- University of Liverpool and Clatterbridge Cancer Centre, Liverpool, UK
| | | | - Raj Prasad
- Department of Surgery, University of Leeds, Leeds, UK
| | - Darius Mirza
- University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK; Women's Children's Hospital NHS Foundation Trust, Birmingham, UK
| | | | - Pippa Corrie
- Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Stephen Falk
- University of Bristol Hospitals NHS Foundation Trust, Bristol, UK
| | - Meg Finch-Jones
- University of Bristol Hospitals NHS Foundation Trust, Bristol, UK
| | | | - Paul Ross
- Guys and St Thomas' NHS Foundation Trust, London, UK
| | - Lucy Wall
- Lothian University Hospitals NHS Trust, Edinburgh, UK
| | | | - Jeff T R Evans
- Department of Oncology, University of Glasgow, Glasgow, UK
| | - Deborah Stocken
- Faculty of Medicine and Health, University of Leeds, Leeds, UK
| | | | - Yuk Ting Ma
- University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - Brian Davidson
- Department of General Surgery, University College London Hospital, London, UK
| | | | - Tim Iveson
- University Hospitals Southampton, Southampton, UK
| | - James Raftery
- Health Economics Analysis Team, University of Southampton, Southampton, UK
| | - Shihua Zhu
- Health Economics Analysis Team, University of Southampton, Southampton, UK
| | | | - O James Garden
- Department of Medicine, University of Edinburgh, Edinburgh, UK
| | - Clive Stubbs
- Birmingham Clinical Trials Unit, University of Birmingham, Birmingham, UK
| | - Juan W Valle
- University of Manchester and The Christie NHS Foundation Trust, Manchester, UK
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Hashmi TR, Devi SR, Ahmad A, Meshram NM, Prasad R. Genetic Status and Endosymbionts Diversity of Bemisia tabaci (Gennadius) on Hosts Belonging to Family Malvaceae in India. Neotrop Entomol 2019; 48:207-218. [PMID: 30374735 DOI: 10.1007/s13744-018-0639-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 09/26/2018] [Indexed: 06/08/2023]
Abstract
A study was instigated to examine the genetic status and distribution of known endosymbionts namely Portiera, Rickettsia, Wolbachia, Cardinium, and Arsenophonus in the populations of Bemisia tabaci (Gennadius) from three host plants: cotton (Gossypium herbaceum), okra (Abelmoschus esculentus L.), and China rose (Hibiscus rosa-sinensis) belonging to the family Malvaceae. The presence of four secondary endosymbionts Rickettsia, Wolbachia, Cardinium, and Arsenophonus was checked in Bemisia tabaci populations. Phylogenetic analyses grounded on the mitochondrial cytochrome oxidase I gene (mtCO1) unveiled the presence of Asia 1, Asia II 1, and Asia II 7 genetic groups for Bemisia tabaci on abovementioned crops. Individuals were examined for symbiotic bacterial infection with specific primers amplifying the 16S rRNA gene for Portiera, Rickettsia, Cardinium, and Wolbachia, and the 23S rRNA gene for Arsenophonus. The results show that Portiera was present in all the Bemisia tabaci samples. However, variations were noted in the circulation frequencies of secondary endosymbionts among the Bemisia tabaci populations. A significant difference was noticed in the distribution frequency of Rickettsia between cotton and China rose or okra with their p values as 0.016 and 0.033 respectively. The uneven incidence of secondary endosymbionts ropes the assumption that each endosymbiotic bacterium not only has a role in the endurance but may contribute to the polyphagous nature of Bemisia tabaci. It also brings an uncomplicated evidence for progressive studies on control measures of this notorious insect pest.
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Affiliation(s)
- T R Hashmi
- Division of Entomology, Indian Agricultural Research Institute, New Delhi, India.
- Amity Institute of Microbial Technology, Amity University, Noida, Uttar Pradesh, India.
| | - S R Devi
- Division of Entomology, Indian Agricultural Research Institute, New Delhi, India
| | - A Ahmad
- Division of Entomology, Indian Agricultural Research Institute, New Delhi, India
| | - N M Meshram
- Division of Entomology, Indian Agricultural Research Institute, New Delhi, India
| | - R Prasad
- Amity Institute of Microbial Technology, Amity University, Noida, Uttar Pradesh, India
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Grieser S, Aurand B, Aktan E, Bonaventura D, Büscher M, Cerchez M, Engin I, Leßmann L, Mannweiler C, Prasad R, Willi O, Khoukaz A. Nm-sized cryogenic hydrogen clusters for a laser-driven proton source. Rev Sci Instrum 2019; 90:043301. [PMID: 31042983 DOI: 10.1063/1.5080011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Accepted: 03/20/2019] [Indexed: 06/09/2023]
Abstract
A cryogenic hydrogen cluster-jet target is described which has been used for laser-plasma interaction studies. Major advantages of the cluster-jet are, on the one hand, the compatibility to pulsed high repetition lasers as the target is operated continuously and, on the other hand, the absence of target debris. The cluster-jet target was characterized using the Mie-scattering technique allowing to determine the cluster size and to compare the measurements with an empirical formula. In addition, an estimation of the cluster beam density was performed. The system was implemented at the high power laser system ARCTURUS, and the measurements show the acceleration of protons after irradiation of the cluster target by high intensity laser pulses with a repetition rate of 5 Hz.
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Affiliation(s)
- S Grieser
- Institut für Kernphysik, Westfälische Wilhelms-Universität Münster, 48149 Münster, Germany
| | - B Aurand
- Institut für Laser- und Plasmaphysik, Heinrich-Heine-Universität, 40225 Düsseldorf, Germany
| | - E Aktan
- Institut für Laser- und Plasmaphysik, Heinrich-Heine-Universität, 40225 Düsseldorf, Germany
| | - D Bonaventura
- Institut für Kernphysik, Westfälische Wilhelms-Universität Münster, 48149 Münster, Germany
| | - M Büscher
- Peter Grünberg Institut, PGI-6, Forschungszentrum Jülich, 52428 Jülich, Germany
| | - M Cerchez
- Institut für Laser- und Plasmaphysik, Heinrich-Heine-Universität, 40225 Düsseldorf, Germany
| | - I Engin
- Peter Grünberg Institut, PGI-6, Forschungszentrum Jülich, 52428 Jülich, Germany
| | - L Leßmann
- Institut für Kernphysik, Westfälische Wilhelms-Universität Münster, 48149 Münster, Germany
| | - C Mannweiler
- Institut für Kernphysik, Westfälische Wilhelms-Universität Münster, 48149 Münster, Germany
| | - R Prasad
- Institut für Laser- und Plasmaphysik, Heinrich-Heine-Universität, 40225 Düsseldorf, Germany
| | - O Willi
- Institut für Laser- und Plasmaphysik, Heinrich-Heine-Universität, 40225 Düsseldorf, Germany
| | - A Khoukaz
- Institut für Kernphysik, Westfälische Wilhelms-Universität Münster, 48149 Münster, Germany
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Murthy K, Prasad R, Deshpande A. Implant-ADM based breast reconstruction: “A tale of two techniques”. Eur J Surg Oncol 2019. [DOI: 10.1016/j.ejso.2018.10.326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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Pradeep K, Wig J, Panda NB, Prasad R. Dose-related Effect of Propofol on Pancreatic Enzymes and Triglyceride Levels in Patients Undergoing Non-abdominal Surgery. Anaesth Intensive Care 2019; 37:27-31. [DOI: 10.1177/0310057x0903700113] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- K. Pradeep
- Departments of Anaesthesia and Intensive Care and Biochemistry, Postgraduate Institute of Medical Education and Research, Chandigarh, India
- Department of Anaesthesia and Intensive Care
| | - J. Wig
- Departments of Anaesthesia and Intensive Care and Biochemistry, Postgraduate Institute of Medical Education and Research, Chandigarh, India
- Department of Anaesthesia and Intensive Care
| | - N. B. Panda
- Departments of Anaesthesia and Intensive Care and Biochemistry, Postgraduate Institute of Medical Education and Research, Chandigarh, India
- Department of Anaesthesia and Intensive Care
| | - R. Prasad
- Departments of Anaesthesia and Intensive Care and Biochemistry, Postgraduate Institute of Medical Education and Research, Chandigarh, India
- Department of Biochemistry
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