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Clinical evaluation of modified ALPPS procedures based on risk-reduced strategy for staged hepatectomy. Ann Hepatol 2021; 20:100245. [PMID: 32877762 DOI: 10.1016/j.aohep.2020.08.063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Revised: 08/03/2020] [Accepted: 08/04/2020] [Indexed: 02/04/2023]
Abstract
INTRODUCTION AND OBJECTIVES Radical resection remains the only curative treatment for liver tumors. Although associating liver partition and portal vein ligation for staged hepatectomy (ALPPS) can increase the resection rate, huge controversy exists for high reported mortality and morbidity. This study was to evaluate the efficacy and safety of modified ALPPS procedure. PATIENTS AND METHODS Patients who were performed ALPPS in single-center in recent 5 years were retrospectively reviewed. The modified strategy included strict patient selection, precise future liver remnant (FLR) assessment and operation planning, and usage of minimally invasive methods. Data including clinical records, functional FLR increase, complications, and overall survival (OS) were analyzed. RESULTS Sixty patients underwent modified ALPPS procedure and recovered well. No severe complications happened after the 1-stage operation, and the increasing FLR was 179.3 cm3(±72.4 cm3), with similar functional FLR increase. The OS was 20.0 months (±4.5month). CONCLUSIONS ALPPS could be a feasible treatment for complex liver tumors by risk-reduced modification. It could be expected to provide long-term survival for patients without enough FLR.
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Chan A, Zhang WY, Chok K, Dai J, Ji R, Kwan C, Man N, Poon R, Lo CM. ALPPS Versus Portal Vein Embolization for Hepatitis-related Hepatocellular Carcinoma: A Changing Paradigm in Modulation of Future Liver Remnant Before Major Hepatectomy. Ann Surg 2021; 273:957-965. [PMID: 31305284 DOI: 10.1097/sla.0000000000003433] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
OBJECTIVE The aim of this study was to evaluate the short- and long-term outcome of associating liver partition and portal vein ligation for staged hepatectomy (ALPPS) for hepatitis-related hepatocellular carcinoma (HCC). SUMMARY BACKGROUND DATA ALPPS has been advocated for future liver remnant (FLR) augmentation in liver metastasis or noncirrhotic liver tumors in recent years. Data on the effect of ALPPS in chronic hepatitis or cirrhosis-related HCC remained scarce. METHODS Data for clinicopathological details, portal hemodynamics, and oncological outcome were reviewed for ALPPS and compared with portal vein embolization (PVE). Tumor immunohistochemistry for PD-1, VEGF, and AFP was evaluated in ALPPS and compared with PVE and upfront hepatectomy (UH). RESULTS From 2002 to 2018, 148 patients with HCC (hepatitis B: n = 136, 92.0%) underwent FLR modulation (ALPPS, n = 46; PVE: n = 102). One patient with ALPPS and 33 patients with PVE failed to proceed to resection (resection rate: 97.8% vs 67.7%, P < 0.001). Among those who had resections, 65 patients (56.5%) had cirrhosis. ALPPS induced absolute FLR volume increment by 48.8%, or FLR estimated total liver volume ratio by 12.8% over 6 days. No difference in morbidity (20.7% vs 30.4%, P = 0.159) and mortality (6.5% vs 5.8%, P = 1.000) with PVE was observed. Chronic hepatitis and intraoperative indocyanine green clearance rate ≤39.5% favored adequate FLR hypertrophy in ALPPS. Five-year overall survival for ALPPS and PVE was 46.8% and 64.1% (P = 0.234). Tumor immunohistochemical staining showed no difference in expression of PD-1, V-EGF, and AFP between ALPPS, PVE, and UH. CONCLUSIONS ALPPS conferred a higher resection rate in hepatitis-related HCC with comparable short- and long-term oncological outcome with PVE.
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Affiliation(s)
- Albert Chan
- Department of Surgery, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China.,Department of Surgery, HKU-Shenzhen Hospital, The University of Hong Kong, Shenzhen, Guangdong, China
| | - Wei Yi Zhang
- Department of Surgery, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China
| | - Kenneth Chok
- Department of Surgery, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China.,Department of Surgery, HKU-Shenzhen Hospital, The University of Hong Kong, Shenzhen, Guangdong, China
| | - Jeff Dai
- Department of Surgery, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China
| | - Ren Ji
- Department of Surgery, HKU-Shenzhen Hospital, The University of Hong Kong, Shenzhen, Guangdong, China
| | - Crystal Kwan
- Department of Surgery, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China
| | - Nancy Man
- Department of Surgery, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China.,Department of Surgery, HKU-Shenzhen Hospital, The University of Hong Kong, Shenzhen, Guangdong, China
| | - Ronnie Poon
- Department of Surgery, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China
| | - Chung Mau Lo
- Department of Surgery, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China.,Department of Surgery, HKU-Shenzhen Hospital, The University of Hong Kong, Shenzhen, Guangdong, China
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Tong Y, Zhu Y, Cai X. The origin of newborn hepatocytes in associating liver partition and portal vein ligation for staged hepatectomy (ALPPS)-derived regeneration. Hepatobiliary Surg Nutr 2020; 9:687-690. [PMID: 33163527 DOI: 10.21037/hbsn.2020.03.13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yifan Tong
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China.,Zhejiang Provincial Key Laboratory of Laparoscopic Technology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Yongfen Zhu
- Department of Hepatology and Infection, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Xiujun Cai
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China.,Zhejiang Provincial Key Laboratory of Laparoscopic Technology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
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Rassam F, Olthof PB, van Lienden KP, Bennink RJ, Erdmann JI, Swijnenburg RJ, Busch OR, Besselink MG, van Gulik TM. Comparison of functional and volumetric increase of the future remnant liver and postoperative outcomes after portal vein embolization and complete or partial associating liver partition and portal vein ligation for staged hepatectomy (ALPPS). ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:436. [PMID: 32395480 PMCID: PMC7210209 DOI: 10.21037/atm.2020.03.191] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Background Portal vein embolization (PVE) is performed to induce hypertrophy of an insufficient future remnant liver (FRL) before major liver resection. Associating liver partition and portal vein ligation for staged hepatectomy (ALPPS) aims to offer a more rapid and increased hypertrophy response. The first stage can be performed with complete or partial (laparoscopic) transection of the liver parenchyma. This study aimed to investigate the increase in FRL volume and function, as well as postoperative outcomes after PVE or complete- or partial-ALPPS1. Methods Patients with insufficient FRL undergoing either PVE or ALPPS underwent CT-volumetry and functional assessment using 99mTc-mebrofenin hepatobiliary scintigraphy (HBS). Severe complications and 90-day mortality were evaluated after liver resection. Results Seventy-two patients were included; 51 underwent PVE, 12 complete-ALPPS1 and 9 partial-ALPPS1 of which 7 laparoscopic. The median increase in FRL function was 1.5-, 1.7- and 1.3-fold higher, respectively, than the increase in volume; (P<0.01, P<0.01 and P=0.44). The target hypertrophy response did not differ between the groups, but was reached earlier in both ALPPS1 groups (8 and 10 days) compared to the PVE group (23 days). Of the resected patients, 18%, 30% and 17% had severe postoperative complications and the 90-day mortality was 2%, 25% and 0%, respectively. Conclusions Increase of FRL function exceeded increase of volume after both PVE and ALPPS1. The target hypertrophy response was reached earlier in ALPPS. Complete and partial-ALPPS1 showed comparable functional and volumetric hypertrophy responses. A (laparoscopic) partial-ALPPS1 is preferred considering lower morbidity and mortality rates after resection.
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Affiliation(s)
- Fadi Rassam
- Department of Surgery, Cancer Center Amsterdam, Amsterdam UMC, University of Amsterdam, The Netherlands
| | - Pim B Olthof
- Department of Surgery, Cancer Center Amsterdam, Amsterdam UMC, University of Amsterdam, The Netherlands
| | - Krijn P van Lienden
- Departments of Radiology and Nuclear Medicine, Cancer Center Amsterdam, Amsterdam UMC, University of Amsterdam, The Netherlands
| | - Roel J Bennink
- Departments of Radiology and Nuclear Medicine, Cancer Center Amsterdam, Amsterdam UMC, University of Amsterdam, The Netherlands
| | - Joris I Erdmann
- Department of Surgery, Cancer Center Amsterdam, Amsterdam UMC, University of Amsterdam, The Netherlands
| | - Rutger-Jan Swijnenburg
- Department of Surgery, Cancer Center Amsterdam, Amsterdam UMC, University of Amsterdam, The Netherlands
| | - Olivier R Busch
- Department of Surgery, Cancer Center Amsterdam, Amsterdam UMC, University of Amsterdam, The Netherlands
| | - Marc G Besselink
- Department of Surgery, Cancer Center Amsterdam, Amsterdam UMC, University of Amsterdam, The Netherlands
| | - Thomas M van Gulik
- Department of Surgery, Cancer Center Amsterdam, Amsterdam UMC, University of Amsterdam, The Netherlands
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Lopez-Lopez V, Robles-Campos R, Brusadin R, Lopez-Conesa A, de la Peña J, Caballero A, Arevalo-Perez J, Navarro-Barrios A, Gómez P, Parrilla-Paricio P. ALPPS for hepatocarcinoma under cirrhosis: a feasible alternative to portal vein embolization. ANNALS OF TRANSLATIONAL MEDICINE 2019; 7:691. [PMID: 31930092 DOI: 10.21037/atm.2019.10.57] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Hepatocellular carcinoma (HCC) is one of the most common and malignant tumors. Preoperative portal vein embolization (PVE) is currently the most accepted treatment before major hepatic resection for HCC in patients with liver fibrosis or cirrhosis and associated insufficient future liver remnant (FLR). In the last decade, associating liver partition and portal vein ligation for staged hepatectomy (ALPPS) technique has been described to obtain an increase of volume regarding PVE and a decrease of drop out. The initial excessive morbidity and mortality of this technique have decreased drastically due to a better selection of patients, the learning curve and the use of less aggressive variations of the original technique in the first stage. For both techniques a complete preoperative assessment of the FLR is the most important issue and only patients with and adequate FLR should be resected. ALPPS could be a feasible technique in very selected patients with HCC and cirrhosis. As long as it is performed in an experienced center could be used as a first choice technique versus PVE or could be used as a rescue technique in case of PVE failure.
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Affiliation(s)
- Victor Lopez-Lopez
- Department of General, Visceral and Transplantation Surgery, Clinic and University Hospital Virgen de la Arrixaca, IMIB-ARRIXACA, Murcia, Spain
| | - Ricardo Robles-Campos
- Department of General, Visceral and Transplantation Surgery, Clinic and University Hospital Virgen de la Arrixaca, IMIB-ARRIXACA, Murcia, Spain
| | - Roberto Brusadin
- Department of General, Visceral and Transplantation Surgery, Clinic and University Hospital Virgen de la Arrixaca, IMIB-ARRIXACA, Murcia, Spain
| | - Asunción Lopez-Conesa
- Department of General, Visceral and Transplantation Surgery, Clinic and University Hospital Virgen de la Arrixaca, IMIB-ARRIXACA, Murcia, Spain
| | - Jesus de la Peña
- Department of Pathology, Clinic and University Hospital Virgen de la Arrixaca, IMIB-ARRIXACA, Murcia, Spain
| | - Albert Caballero
- Department of Pathology, Clinic and University Hospital Virgen de la Arrixaca, IMIB-ARRIXACA, Murcia, Spain
| | - Julio Arevalo-Perez
- Radiology Department, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Alvaro Navarro-Barrios
- Department of General, Visceral and Transplantation Surgery, Clinic and University Hospital Virgen de la Arrixaca, IMIB-ARRIXACA, Murcia, Spain
| | - Paula Gómez
- Department of General, Visceral and Transplantation Surgery, Clinic and University Hospital Virgen de la Arrixaca, IMIB-ARRIXACA, Murcia, Spain
| | - Pascual Parrilla-Paricio
- Department of General, Visceral and Transplantation Surgery, Clinic and University Hospital Virgen de la Arrixaca, IMIB-ARRIXACA, Murcia, Spain
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Yang X, Yang C, Qiu Y, Shen S, Kong J, Wang W. A preliminary study of associating liver partition and portal vein ligation for staged hepatectomy in a rat model of liver cirrhosis. Exp Ther Med 2019; 18:1203-1211. [PMID: 31316615 PMCID: PMC6601136 DOI: 10.3892/etm.2019.7688] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Accepted: 04/12/2019] [Indexed: 02/05/2023] Open
Abstract
Associating liver partition and portal vein ligation for staged hepatectomy (ALPPS) in a rat model of liver cirrhosis has not, to the best of our knowledge, been previously investigated. The present study therefore aimed to establish a model of ALPPS in cirrhotic rats and to assess liver regeneration. Rats were randomly divided into an ALPPS group with carbon tetrachloride-induced cirrhosis (group A) and a normal liver (group B). Rat weight, cytokine levels, biochemical parameters and histopathology were assessed 1, 2, 3, 7 and 14 days after ALPPS. Higher aspartate aminotransferase and alanine aminotransferase levels were detected in group A on the first postoperative day. On the first, second and third days, hepatocyte proliferation rate was higher in group B than in group A. After 3 days, hepatocyte proliferation rate in group B began to decrease, but the rate in group A continued to increase until the 14th day. Higher levels of hepatocyte growth factor, interleukin-6 and tumor necrosis factor-α were detected in group A compared with group B, but the differences were not significant. The present study demonstrated that ALPPS promoted liver regeneration in a rat model of cirrhosis, but significantly impaired liver function. Compared with the ALPPS model, group B exhibited a delayed peak of proliferation. The mechanism of liver regeneration induced by ALPPS in cirrhotic rats may be associated with increased cytokine levels.
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Affiliation(s)
- Xianwei Yang
- Department of Liver Surgery and Liver Transplantation Center, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Chuang Yang
- Department of Liver Surgery and Liver Transplantation Center, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, P.R. China.,Department of Hepatobiliary and Pancreatic Surgery, The Third Hospital of Mianyang, Sichuan Mental Health Center, Mianyang, Sichuan 621000, P.R. China
| | - Yiwen Qiu
- Department of Liver Surgery and Liver Transplantation Center, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Shu Shen
- Department of Liver Surgery and Liver Transplantation Center, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Junjie Kong
- Department of Liver Surgery and Liver Transplantation Center, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Wentao Wang
- Department of Liver Surgery and Liver Transplantation Center, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, P.R. China
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Practical guidelines for the use of technetium-99m mebrofenin hepatobiliary scintigraphy in the quantitative assessment of liver function. Nucl Med Commun 2019; 40:297-307. [PMID: 30601245 DOI: 10.1097/mnm.0000000000000973] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Surgical resection remains the most important curative treatment for liver tumors; however, it harbors the risk of developing posthepatectomy liver failure. The principal risk is associated with the quality and quantity of the future remnant liver. Therefore, preoperative assessment of the future remnant liver is essential in patients scheduled for major liver resection. Technetium-99m mebrofenin hepatobiliary scintigraphy (HBS) in combination with single-photon emission computed tomography/computed tomography is increasingly applied for the quantitative assessment of liver function before major liver surgery. This dynamic quantitative liver function test allows assessment of both total and regional liver function, represented by the hepatic mebrofenin uptake rate, thereby assisting in adequate patient selection. Since routine implementation, it has shown to reduce the risk of posthepatectomy liver failure and has proven to be more valuable than volumetric assessment. To ensure optimal and reproducible results that can be compared across different centers, it is crucial to standardize the methodology and ensure practical applicability of this technique, thereby facilitating external validation and multicenter trials. This article provides an overview of the HBS methodology used at some of the largest HBS centers and covers practical details in the application of HBS for the quantitative scintigraphic assessment of liver function.
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Rassam F, Olthof PB, van Lienden KP, Bennink RJ, Besselink MG, Busch OR, van Gulik TM. Functional and volumetric assessment of liver segments after portal vein embolization: Differences in hypertrophy response. Surgery 2018; 165:686-695. [PMID: 30573191 DOI: 10.1016/j.surg.2018.11.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 11/06/2018] [Accepted: 11/08/2018] [Indexed: 12/20/2022]
Abstract
BACKGROUND Patients considered for liver resection with insufficient volume or function of the future remnant liver are candidates for portal vein embolization to allow safe resection. The aim of this study is to analyze the volumetric and functional responses after portal vein embolization and to evaluate predictors of the hypertrophy response. METHODS All patients who underwent portal vein embolization before liver resection 2006-2017 were included. Patients who did not undergo computed tomography-volumetry and functional assessment with technetium-99m mebrofenin hepatobiliary scintigraphy before and after portal vein embolization were excluded. The functional and volumetric response rates were calculated. Multiple regression analysis was conducted to examine the relationship between the hypertrophy response and potential predictors. RESULTS A total of 90 patients underwent portal vein embolization of the right liver. After 3 weeks, there was a significant increase in both volumetric and functional share of the future remnant liver (both P < .01). The increase in functional share exceeded the increase in volumetric share (P < .01). The median functional contribution of segment 4 after portal vein embolization was 41.5% (31.7%-48.7%) of the nonembolized lobe. Preoperative chemotherapy was not a significant predictor of the increase in function or volume. Compared with benign lesions, malignant diseases were significant negative predictors of the functional response. CONCLUSION A total of 3 weeks after portal vein embolization, the functional response exceeded that of the volumetric response, meaning that the waiting time to resection potentially can be decreased. Segment 4 had a significant share of both volume and function, enabling surgical strategies only leaving segment 4 as a monosegment. Neoadjuvant chemotherapy had no negative influence on the hypertrophy response.
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Affiliation(s)
- Fadi Rassam
- Department of Surgery, Cancer Center Amsterdam, Amsterdam UMC, University of Amsterdam, The Netherlands.
| | - Pim B Olthof
- Department of Surgery, Cancer Center Amsterdam, Amsterdam UMC, University of Amsterdam, The Netherlands
| | - Krijn P van Lienden
- Departments of Radiology and Nuclear Medicine, Cancer Center Amsterdam, Amsterdam UMC, University of Amsterdam, The Netherlands
| | - Roel J Bennink
- Departments of Radiology and Nuclear Medicine, Cancer Center Amsterdam, Amsterdam UMC, University of Amsterdam, The Netherlands
| | - Marc G Besselink
- Department of Surgery, Cancer Center Amsterdam, Amsterdam UMC, University of Amsterdam, The Netherlands
| | - Olivier R Busch
- Department of Surgery, Cancer Center Amsterdam, Amsterdam UMC, University of Amsterdam, The Netherlands
| | - Thomas M van Gulik
- Department of Surgery, Cancer Center Amsterdam, Amsterdam UMC, University of Amsterdam, The Netherlands
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Tong YF, Cai XJ. Correction to “Maturity of associating liver partition and portal vein ligation for staged hepatectomy-derived liver regeneration in a rat model [World J Gastroenterol 2018 March 14; 24(10): 1107-1119]”. World J Gastroenterol 2018; 24:4517-4518. [PMID: 30356980 PMCID: PMC6196334 DOI: 10.3748/wjg.v24.i39.4517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 08/01/2018] [Accepted: 08/24/2018] [Indexed: 02/06/2023] Open
Affiliation(s)
- Yi-Fan Tong
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310000, Zhejiang Province, China
| | - Xiu-Jun Cai
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310000, Zhejiang Province, China
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Hepatic regeneration by associating liver partition and portal vein ligation for staged hepatectomy (ALPPS) is feasible but attenuated in rat liver with thioacetamide-induced fibrosis. Surgery 2018; 165:345-352. [PMID: 30249433 DOI: 10.1016/j.surg.2018.08.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Revised: 08/05/2018] [Accepted: 08/08/2018] [Indexed: 02/07/2023]
Abstract
BACKGROUND The associating liver partition and portal vein ligation for staged hepatectomy (ALPPS) procedure promotes the proliferation of the future liver remnant, but evidence to support the feasibility of ALPPS in livers with fibrosis is needed. Therefore the aim of this study was to establish a fibrotic ALPPS model in the rat to compare the capacity of regeneration in the remnant liver with or without fibrosis. METHODS In our study we first established a thioacetamide-induced fibrotic ALPPS model in rats. Then the ALPPS-induced regenerative capacities of normal and fibrotic liver were compared in this animal model. In addition, markers of regeneration, including the proliferative index and cyclin D1 and proliferating cell nuclear antigen levels, as well as various indicators of liver function were determined to evaluate the quality of the hepatic regeneration. RESULTS Compared with that of the sham group (opening of the peritoneal cavity with no further operative manipulation), the proliferation of the future liver remnant in fibrotic rat liver after the ALPPS procedure was increased on postoperative days 1, 2, and 5 (P < .039 each). In addition, the proliferative response was greater in the ALPPS group than in the ligation group subjected only to portal vein ligation of the left lateral, left middle, right, and caudate lobes (P = .099, P = .006, and P = .020 on postoperative days 1, 2, and 5, respectively). In contrast, the ALPPS-induced regenerative capacity in the fibrotic rat livers was attenuated compared with that in the normal liver on postoperative days 1, 2, and 5 (P < .031 for each) after stage I and on postoperative day 5 after stage II of the ALPPS procedure (P < .005). This attenuated the recovery of liver function, and the greater mortality rate indicated that functional proliferation was either delayed or not as extensive in the fibrotic rat livers. CONCLUSION Through establishing a rat model of thioacetamide-induced liver fibrosis, we found that ALPPS-derived liver regeneration was present and feasible in fibrotic livers, but this effect was attenuated compared with that in normal liver.
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