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Hamdi M, Elmowafy E, Abdel-Bar HM, ElKashlan AM, Al-Jamal KT, Awad GAS. Hyaluronic acid-entecavir conjugates-core/lipid-shell nanohybrids for efficient macrophage uptake and hepatotropic prospects. Int J Biol Macromol 2022; 217:731-747. [PMID: 35841964 DOI: 10.1016/j.ijbiomac.2022.07.067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 07/07/2022] [Accepted: 07/08/2022] [Indexed: 11/05/2022]
Abstract
Drug covalently bound to polymers had formed, lately, platforms with great promise in drug delivery. These drug polymer conjugates (DPC) boosted drug loading and controlled medicine release with targeting ability. Herein, the ability of entecavir (E) conjugated to hyaluronic acid (HA) forming the core of vitamin E coated lipid nanohybrids (EE-HA LPH), to target Kupffer cells and hepatocyte had been proved. The drug was associated to HA with efficiency of 93.48 ± 3.14 % and nanohybrids loading of 22.02 ± 2.3 %. DiI labelled lipidic nanohybrids improved the macrophage uptake in J774 cells with a 21 day hepatocytes retention post intramuscular injection. Finally, in vivo biocompatibility and safety with respect to body weight, organs indices and histopathological alterations were demonstrated. Coating with vitamin E and conjugation of E to HA (a CD44 ligand), could give grounds for prospective application for vectored nano-platform in hepatitis B.
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Affiliation(s)
- Mohamed Hamdi
- Department of Pharmaceutics, Faculty of Pharmacy, University of Sadat City, Egypt
| | - Enas Elmowafy
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Ain Shams University, Egypt
| | - Hend Mohamed Abdel-Bar
- Department of Pharmaceutics, Faculty of Pharmacy, University of Sadat City, Egypt; Institute of Pharmaceutical Science, Faculty of Life Sciences & Medicine, King's College London, United Kingdom.
| | - Akram M ElKashlan
- Department of Biochemistry, Faculty of Pharmacy, University of Sadat City, Egypt
| | - Khuloud T Al-Jamal
- Institute of Pharmaceutical Science, Faculty of Life Sciences & Medicine, King's College London, United Kingdom
| | - Gehanne A S Awad
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Ain Shams University, Egypt
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Bielen R, Robaeys G, Schelfhout S, Monbaliu D, Van der Merwe S, Pirenne J, Nevens F. Personalized subcutaneous administration of hepatitis B surface antibodies without nucleos(t)ide analogs for patients at risk of renal failure after liver transplantation: a prospective single center cohort study. Transpl Int 2018; 31:503-509. [PMID: 29359868 DOI: 10.1111/tri.13112] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 11/02/2017] [Accepted: 01/08/2018] [Indexed: 12/29/2022]
Abstract
Currently, nucleos(t)ide analogs (NAs) in monotherapy are favored as prophylaxis against hepatitis B recurrence after liver transplantation. However, in patients at risk of renal failure, renal safety of NAs is of concern. We investigated the safety and efficacy of subcutaneous (SC) hepatitis B immunoglobulins (HBIG) in monotherapy. This is a single-arm prospective trial in patients transplanted >1 year. We included 43 Caucasian patients. The majority was treated with calcineurin inhibitors, and several patients had other risk factors for renal impairment as well: diabetes mellitus (n = 10/43), arterial hypertension (n = 11/43), and hyperlipidemia (=10/43). At inclusion, 42% (n = 18) had chronic kidney disease ≥ grade 3a. All patients were switched from IV HBIG with or without NAs to SC HBIG without NAs. After one year, the targeted titer was lowered to ≥150 IU/l in patients with low risk of recurrence. Mean follow-up time was 36 ± 5 months. None of the patients had a relapse of HBsAg or HBV DNA. The treatment was well tolerated, safe and the renal function remained unchanged both in patients with (n = 18) or without (n = 25) renal impairment at baseline. The mean HBsAb titer could be decreased from 343 ± 163 to 199 ± 81 IU/l in the low-risk group (n = 17) and 218 ± 71 IU/l in the high-risk group (n = 26). In 86% (n = 37) doses, reductions were possible, which significantly lowered the cost of treatment. SC HBIG without NAs had a 100% success rate in the long-term prevention of HBsAg and HBV DNA reappearance, without deterioration of renal function.
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Affiliation(s)
- Rob Bielen
- Faculty of Medicine and Life Sciences, Hasselt University, Hasselt, Belgium.,Department of Gastroenterology and Hepatology, Ziekenhuis Oost Limburg, Genk, Belgium
| | - Geert Robaeys
- Faculty of Medicine and Life Sciences, Hasselt University, Hasselt, Belgium.,Department of Gastroenterology and Hepatology, Ziekenhuis Oost Limburg, Genk, Belgium.,Department of Gastroenterology & Hepatology, University Hospitals KULeuven, Leuven, Belgium
| | - Sigrid Schelfhout
- Department of Gastroenterology & Hepatology, University Hospitals KULeuven, Leuven, Belgium
| | - Diethard Monbaliu
- Department of Abdominal Transplant Surgery, University Hospitals KULeuven, Leuven, Belgium
| | - Schalk Van der Merwe
- Department of Gastroenterology & Hepatology, University Hospitals KULeuven, Leuven, Belgium
| | - Jacques Pirenne
- Department of Abdominal Transplant Surgery, University Hospitals KULeuven, Leuven, Belgium
| | - Frederik Nevens
- Department of Gastroenterology & Hepatology, University Hospitals KULeuven, Leuven, Belgium
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Early Introduction of Subcutaneous Hepatitis B Immunoglobulin Following Liver Transplantation for Hepatitis B Virus Infection. Transplantation 2016; 100:1507-12. [PMID: 27023394 DOI: 10.1097/tp.0000000000001171] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Hulstaert E, Verhelst X, Geerts A, Van Vlierberghe H. Intramuscular hepatitis B immunoglobulins for reinfection control after liver transplantation: a cost-saving alternative. J Comp Eff Res 2015; 4:259-265. [DOI: 10.2217/cer.15.4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Aim: We explore the effectiveness and cost–effectiveness of intramuscular versus intravenous hepatitis B immunoglobulins (HBIG-IV vs HBIG-IM) to prevent reinfection with the hepatitis B virus after orthotopic liver transplantation. Patients & methods: Overall, 14 patients had orthotopic liver transplantation in 2003–2013 at Ghent University Hospital for HBV-related liver disease. On average 32 months after transplantation patients switched from high-dose HBIG-IV to low-dose HBIG-IM, always in combination with a nucleos(t)ide analog. Results: Seven patients were switched so far. No significant differences between HBIG-IV and HBIG-IM were found in HBsAg and hepatitis B virus-DNA. Conclusion: Switching patients from HBIG-IV to HBIG-IM can be done safely if well monitored. Net yearly savings for the healthcare payer were €5000 for each patient switched to HBIG-IM.
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Affiliation(s)
- Eva Hulstaert
- Department of Hepatology, University Hospital Ghent, De Pintelaan 185, B9000 Ghent, Belgium
| | - Xavier Verhelst
- Department of Hepatology, University Hospital Ghent, De Pintelaan 185, B9000 Ghent, Belgium
| | - Anja Geerts
- Department of Hepatology, University Hospital Ghent, De Pintelaan 185, B9000 Ghent, Belgium
| | - Hans Van Vlierberghe
- Department of Hepatology, University Hospital Ghent, De Pintelaan 185, B9000 Ghent, Belgium
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EXP CLIN TRANSPLANTExp Clin Transplant 2015; 13. [DOI: 10.6002/ect.mesot2014.o78] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Jin JF, Zhu LL, Chen M, Xu HM, Wang HF, Feng XQ, Zhu XP, Zhou Q. The optimal choice of medication administration route regarding intravenous, intramuscular, and subcutaneous injection. Patient Prefer Adherence 2015; 9:923-42. [PMID: 26170642 PMCID: PMC4494621 DOI: 10.2147/ppa.s87271] [Citation(s) in RCA: 97] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Intravenous (IV), intramuscular (IM), and subcutaneous (SC) are the three most frequently used injection routes in medication administration. Comparative studies of SC versus IV, IM versus IV, or IM versus SC have been sporadically conducted, and some new findings are completely different from the dosage recommendation as described in prescribing information. However, clinicians may still be ignorant of such new evidence-based findings when choosing treatment methods. METHODS A literature search was performed using PubMed, MEDLINE, and Web of Sciences™ Core Collection to analyze the advantages and disadvantages of SC, IV, and IM administration in head-to-head comparative studies. RESULTS "SC better than IV" involves trastuzumab, rituximab, antitumor necrosis factor medications, bortezomib, amifostine, recombinant human granulocyte-macrophage colony-stimulating factor, granulocyte colony-stimulating factor, recombinant interleukin-2, immunoglobulin, epoetin alfa, heparin, and opioids. "IV better than SC" involves ketamine, vitamin K1, and abatacept. With respect to insulin and ketamine, whether IV has advantages over SC is determined by specific clinical circumstances. "IM better than IV" involves epinephrine, hepatitis B immu-noglobulin, pegaspargase, and some antibiotics. "IV better than IM" involves ketamine, morphine, and antivenom. "IM better than SC" involves epinephrine. "SC better than IM" involves interferon-beta-1a, methotrexate, human chorionic gonadotropin, hepatitis B immunoglobulin, hydrocortisone, and morphine. Safety, efficacy, patient preference, and pharmacoeconomics are four principles governing the choice of injection route. Safety and efficacy must be the preferred principles to be considered (eg, epinephrine should be given intramuscularly during an episode of systemic anaphylaxis). If the safety and efficacy of two injection routes are equivalent, clinicians should consider more about patient preference and pharmacoeconomics because patient preference will ensure optimal treatment adherence and ultimately improve patient experience or satisfaction, while pharmacoeconomic concern will help alleviate nurse shortages and reduce overall health care costs. Besides the principles, the following detailed factors might affect the decision: patient characteristics-related factors (body mass index, age, sex, medical status [eg, renal impairment, comorbidities], personal attitudes toward safety and convenience, past experience, perception of current disease status, health literacy, and socioeconomic status), medication administration-related factors (anatomical site of injection, dose, frequency, formulation characteristics, administration time, indication, flexibility in the route of administration), and health care staff/institution-related factors (knowledge, human resources). CONCLUSION This updated review of findings of comparative studies of different injection routes will enrich the knowledge of safe, efficacious, economic, and patient preference-oriented medication administration as well as catching research opportunities in clinical nursing practice.
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Affiliation(s)
- Jing-fen Jin
- Division of Nursing, Division of Nursing, Zhejiang University, Hangzhou, People’s Republic of China
| | - Ling-ling Zhu
- VIP Care Ward, Division of Nursing, Zhejiang University, Hangzhou, People’s Republic of China
| | - Meng Chen
- Department of Pharmacy, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, People’s Republic of China
| | - Hui-min Xu
- Department of Pharmacy, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, People’s Republic of China
| | - Hua-fen Wang
- Division of Nursing, Division of Nursing, Zhejiang University, Hangzhou, People’s Republic of China
| | - Xiu-qin Feng
- Division of Nursing, Division of Nursing, Zhejiang University, Hangzhou, People’s Republic of China
| | - Xiu-ping Zhu
- Department of Pharmacy, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, People’s Republic of China
| | - Quan Zhou
- Department of Pharmacy, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, People’s Republic of China
- Correspondence: Quan Zhou, Department of Pharmacy, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Jiefang Road No 88, Shangcheng District, Hangzhou 310009, Zhejiang Province, People’s Republic of China, Tel +86 571 8778 4615, Fax +86 571 8702 2776, Email
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Kasraianfard A, Watt KD, Lindberg L, Alexopoulos S, Rezaei N. HBIG Remains Significant in the Era of New Potent Nucleoside Analogues for Prophylaxis Against Hepatitis B Recurrence After Liver Transplantation. Int Rev Immunol 2014; 35:312-324. [DOI: 10.3109/08830185.2014.921160] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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McGonigal KH, Bajjoka IE, Abouljoud MS. Tenofovir-emtricitabine therapy for the prevention of hepatitis B recurrence in four patients after liver transplantation. Pharmacotherapy 2013; 33:e170-6. [PMID: 23744810 DOI: 10.1002/phar.1306] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
In patients infected with chronic hepatitis B virus (HBV) that goes untreated, therapeutic options are limited once the disease decompensates, and orthotopic liver transplantation is often the only treatment available to save the patient's life. After liver transplantation, combined therapy with hepatitis B immune globulin (HBIG) and a nucleos(t)ide analog is the standard of practice for the prevention of HBV recurrence. Historically, nucleos(t)ide analogs such as lamivudine and adefovir have been used with low-dose HBIG for the prevention of HBV recurrence after liver transplantation. However, these analogs are ineffective when used alone due the emergence of resistance mutations. Newer nucleos(t)ide analogs such as tenofovir disoproxil fumarate have demonstrated higher resistance thresholds and effective viral suppression when paired with low-dose HBIG. In this case series, we evaluated the safety and efficacy of switching four patients from low-dose HBIG plus nucleos(t)ide analog therapy for the prevention of HBV recurrence to a combination tenofovir-emtricitabine regimen. At the end of follow-up, all patients remained hepatitis B surface antigen negative and had HBV DNA levels of less than 10 IU/ml. Additionally, no tenofovir-associated nephrotoxicity was observed among the four patients. Tenofovir-emtricitabine monotherapy in lieu of HBIG plus nucleos(t)ide analog therapy demonstrated prevention of HBV recurrence without tenofovir-associated nephrotoxicity after 9 months of follow-up in all four patients and up to 15 months in one patient.
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Affiliation(s)
- Katrina H McGonigal
- Creighton School of Pharmacy and Health Professions, Creighton University, Omaha, Nebraska
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Di Costanzo GG, Lanza AG, Picciotto FP, Imparato M, Migliaccio C, De Luca M, Scuderi V, Tortora R, Cordone G, Utech W, Calise F. Safety and efficacy of subcutaneous hepatitis B immunoglobulin after liver transplantation: an open single-arm prospective study. Am J Transplant 2013; 13:348-52. [PMID: 23137160 DOI: 10.1111/j.1600-6143.2012.04319.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Revised: 09/05/2012] [Indexed: 01/25/2023]
Abstract
Life-long hepatitis B immunoglobulin (HBIG) administration is a main component of prophylactic strategy to prevent hepatitis B virus (HBV) reinfection after liver transplantation (LT). Long-term effects of HBIG treatment are known only for intravenous (IV) and intramuscular formulations. To evaluate safety and efficacy of self-administered SC HBIG, 135 LT patients receiving a 48-week treatment were analyzed. The dose of HBIG was 500 IU or 1000 IU if body weight was <75 kg or ≥75 kg, respectively. Patients were switched from the monthly IV HBIG treatment to weekly SC HBIG 2-3 weeks after the last IV dosage. All patients were able to SC self-injection after a single training. The treatment was effective in maintaining trough anti-HBs levels >100 IU/L. No severe drug-related side effects occurred. Fifteen injection-site small hematomas and four cases of mild itch occurred. At the end of the study, anti-HBs median titer was 232 IU/L (115-566 IU/L) and 97.8% of patients had an anti-HBs level >150 IU/L. Due to high mean level of anti-HBs titers observed during this study, individualized treatment schedules should be further investigated. In conclusion, SC HBIG for long-term prophylaxis of post-LT HBV reinfection resulted safe, well accepted, and effective in maintaining adequate anti-HBs levels.
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Dehghani SM, Taghavi SAR, Geramizadeh B, Nikeghbalian S, Derakhshan N, Malekpour A, Malek-Hosseini SA. Hepatitis B recurrence after liver transplantation: a single center experiences and review the literature. HEPATITIS MONTHLY 2013; 13:e6609. [PMID: 23483668 PMCID: PMC3589890 DOI: 10.5812/hepatmon.6609] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/31/2012] [Revised: 07/26/2012] [Accepted: 12/28/2012] [Indexed: 02/05/2023]
Abstract
BACKGROUND Despite the advances in the treatment of chronic hepatitis B virus (HBV) infection, liver transplantation (LT) remains the only hope for many patients with end-stage liver diseases resulting from HBV. OBJECTIVES The aim of this study was to investigate the rate of HBV recurrence in cases that had undergone LT due to the HBV related liver cirrhosis. PATIENTS AND METHODS Forty-nine patients who underwent LT due to HBV related cirrhosis since 2001 to 2009 in Shiraz Organ Transplantation Center were enrolled in the present study. They were asked to complete the planned questionnaire and also to sign the informed consent in order to take part in this study. Post-transplant prophylaxis protocol against HBV recurrence was based on a hundred milligrams of lamivudine daily plus intramuscular injections of hepatitis B immune globulin (HBIG) with appropriate dosage to keep anti-HBs antibody titer above 300 IU/L and 100 IU/L in the first six months and afterwards, respectively. Blood samples were obtained and checked for HBsAg, HBeAg, and the titers of Anti -HBsAb as well as Anti- HBeAb with ELISA. A quantitative HBV DNA assay was also done on all samples (GENE-RAD® Real-time PCR). RESULTS There were 91.8% males and 8.2% females enrolled in the study. The duration of post-transplant prophylaxis ranged from 3 months to 8 years (mean 18.9 ± 19.3 months). HBsAg and HBeAg were positive in 24.5% and 2% of cases, respectively. Real-time PCR for HBV DNA were zero copies/mL in 91.8% of patients, none of which represented a positive value for HBV recurrence (Positive > 10,000 copies/mL). The mean Anti-HBs Ab titer was 231.7 ± 135.9 IU/L; it was above 100 IU/L in 71.4% of patients. Thirty-seven (75.5%) of the patients were taking tacrolimus plus mycophenolate mofetil, 6 (12.2%) were on cyclosporine plus mycophenolate mofetil, and 6 (12.2%) were taking sirolimus plus mycophenolate mofetil. HBsAg was detectable in seven patients taking tacrolimus plus mycophenolate mofetil (18.9%), in four patients taking cyclosporine plus mycophenolate mofetil (66.7%), and in one patient among the six who were taking sirolimus plus mycophenolate mofetil (16.7%). There was no significant statistical correlation between the presence of a positive value for HBsAg and the immunosuppression regimen or Anti HBsAb titer (P ˃ 0.05). Presence of a positive value for HBsAg was not predictive of a positive HBV DNA or its level in blood (P ˃ 0.05). CONCLUSIONS Post-transplant HBV prophylaxis with lamivudine and intramuscular HBIG with appropriate dosage to keep anti-HBs antibody titer above 300 IU/L in the first six months and above 100 IU/L afterwards is effective for prevention of HBV recurrence after LT.
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Affiliation(s)
- Seyed Mohsen Dehghani
- Shiraz Transplant Research Center, Nemazee Hospital, Shiraz University of Medical Sciences, Shiraz, IR Iran
- Gastroenterohepatology Research Center, Nemazee Hospital, Shiraz University of Medical Sciences, Shiraz, IR Iran
| | - Seyed Ali Reza Taghavi
- Gastroenterohepatology Research Center, Nemazee Hospital, Shiraz University of Medical Sciences, Shiraz, IR Iran
| | - Bita Geramizadeh
- Shiraz Transplant Research Center, Nemazee Hospital, Shiraz University of Medical Sciences, Shiraz, IR Iran
| | - Saman Nikeghbalian
- Shiraz Transplant Research Center, Nemazee Hospital, Shiraz University of Medical Sciences, Shiraz, IR Iran
| | - Nima Derakhshan
- Gastroenterohepatology Research Center, Nemazee Hospital, Shiraz University of Medical Sciences, Shiraz, IR Iran
| | - Abdorrasoul Malekpour
- Gastroenterohepatology Research Center, Nemazee Hospital, Shiraz University of Medical Sciences, Shiraz, IR Iran
| | - Seyed Ali Malek-Hosseini
- Shiraz Transplant Research Center, Nemazee Hospital, Shiraz University of Medical Sciences, Shiraz, IR Iran
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Dindoost P, Jazayeri SM, Alavian SM. Hepatitis B immune globulin in liver transplantation prophylaxis: an update. HEPATITIS MONTHLY 2012; 12:168-76. [PMID: 22550524 PMCID: PMC3339416 DOI: 10.5812/hepatmon.832] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/11/2011] [Revised: 12/26/2011] [Accepted: 01/29/2012] [Indexed: 12/11/2022]
Abstract
CONTEXT Liver transplantation is the best treatment option for end-stage liver disease following hepatitis B (HBV) infection. However, the high rate of recurrence of HBV infection following transplantation is a disadvantage of this option. EVIDENCE ACQUISITION Over the past 2 decades, the gold standard of prophylactic treatment for the prevention of HBV re-infection following liver transplantation has been the administration of low- to high-dose hepatitis B immune globulin (HBIg) along with an antiviral agent to induce passive immunity. RESULTS The effectiveness of HBIg in preventing the recurrence of HBV depends on the dosage, route of administration, and duration of HBIg treatment, and the viremic status at the time of transplantation. There is currently no consensus on a standardized recommendation for therapeutic options that include HBIg administration. CONCLUSION This review attempts to summarize the available data on the feasibility of such options. Most recent studies support the use of long-term combination therapy of HBIg and antiviral NAs (especially new agents).
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Affiliation(s)
| | - Seyed Mohammad Jazayeri
- Hepatitis B Molecular Laboratory, Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, IR Iran
| | - Seyed Moayed Alavian
- Baqiyatallah Research Center for Gastroenterology and Liver Diseases, Baqiyatallah University of Medical Sciences, Tehran, IR Iran
- Corresponding author: Seyed Moayed Alavian, Baqiyatallah Research Center for Gastroenterology and Liver Diseases, Baqiyatallah University of Medical Sciences, Tehran, IR Iran. Tel.: +98-2188945186, Fax: +98-2181262072, E-mail:
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12
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Hepatitis B Immune Globulin in Liver Transplantation Prophylaxis: An Update. HEPATITIS MONTHLY 2012. [DOI: 10.5812/hepatmon.5124] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
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The role of HBIg as hepatitis B reinfection prophylaxis following liver transplantation. Langenbecks Arch Surg 2011; 397:697-710. [DOI: 10.1007/s00423-011-0795-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2010] [Accepted: 03/28/2011] [Indexed: 12/23/2022]
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Does pre-liver transplant HBV DNA level affect HBV recurrence or survival in liver transplant recipients receiving HBIg and nucleos(t)ide analogues? Ann Hepatol 2011. [DOI: 10.1016/s1665-2681(19)31567-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
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Yahyazadeh A, Beckebaum S, Cicinnati V, Klein C, Paul A, Pascher A, Neuhaus R. Efficacy and safety of subcutaneous human HBV-immunoglobulin (Zutectra) in liver transplantation: an open, prospective, single-arm phase III study. Transpl Int 2011; 24:441-50. [PMID: 21294780 DOI: 10.1111/j.1432-2277.2011.01222.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Hepatitis B re-infection prophylaxis is crucial for graft and recipient survival for transplanted patients and is administered routinely after liver transplantation for hepatitis B. Aim of the current study was the investigation of efficacy, safety and feasibility of home-treatment of a novel human hepatitis B immunoglobulin BT088 (Zutectra) after weekly subcutaneous application in liver-transplanted patients. A total of 23 patients (5 female, 18 male, median age 51 years) were enrolled and switched from monthly IV to weekly SC hepatitis B immunoglobulin administration. During a period of 18 weeks (optional 24 weeks) anti-HBs levels, signs of re-infection, adverse events and feasibility of self-administration were studied. After 8 weeks of training patients showing good compliance and stable antibody titres were allowed to start self-administration at home. All patients maintained a safety level of >100 U/l anti-HBs. No failure was noted, no re-infection occurred. A total of 10 treatment-emergent events were assessed as related to study drug application (injection-site haematoma, headache, abdominal pain, fatigue and haematuria). High numbers of self-administration (287 vs. 122 by staff) demonstrated general feasibility of SC administration. Weekly subcutaneous administration of BT088 (Zutectra - registered trade mark in the EU) is effective, safe and presents an easy-to-apply treatment option for combined hepatitis B virus re-infection prophylaxis in liver transplant patients (Eudra CT Number: 2005-003737-40).
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Affiliation(s)
- Ali Yahyazadeh
- Department of General-, Visceral- and Transplantation Surgery, Charité University Medicine Berlin, Berlin, Germany.
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16
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Current use of hepatitis B immune globulin for prevention of de novo hepatitis B in recipients receiving anti-HBc-positive livers. Hepatol Int 2011; 5:635-43. [PMID: 21484133 DOI: 10.1007/s12072-010-9250-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2010] [Accepted: 12/31/2010] [Indexed: 01/10/2023]
Abstract
Livers from donors positive for antibody against anti-HBc can potentially transmit de novo hepatitis B (DNH) to their recipients. Despite a good outcome, prophylaxis is usually offered to such recipients. There is no consensus on the standard prophylactic regimen and hence prophylaxis varies among different transplant centres. Nonetheless, hepatitis B immune globulin (HBIG) is considered the mainstay of such prophylaxis, either alone or in combination with an oral antiviral treatment. We aim to provide a concise review of the current use of HBIG in prevention of DNH. We also address a few important questions regarding HBIG use.
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Efficacy, safety, and pharmacokinetics of intramuscular hepatitis B immune globulin, Igantibe, for the prophylaxis of viral B hepatitis after liver transplantation. Dig Liver Dis 2010; 42:509-14. [PMID: 19828386 DOI: 10.1016/j.dld.2009.09.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2009] [Revised: 08/12/2009] [Accepted: 09/11/2009] [Indexed: 12/11/2022]
Abstract
BACKGROUND Long-term prophylaxis of hepatitis B virus (HBV) positive liver transplanted subjects with intravenous hepatitis B immunoglobulin (HBIG) is effective, however use of intramuscular HBIG could be as effective with fewer adverse events and lower cost. AIM We conducted a prospective, non-randomized, clinical study to assess the efficacy and safety of HBIG from Grifols, Igantibe, for the prophylaxis of HBV reactivation. METHODS Eighteen adult patients submitted to liver transplantation for HBV-related disease more than 18 months earlier were treated with doses of 2000 I.U. intramuscular Igantibe every 14 days for 6 months. RESULTS Mean trough serum HBsAb IgG titers from months 4 to 6 (primary efficacy variable) were protective (>or=150 I.U./L) at each time point. Individual measurements were also protective throughout the study. HBV replication remained negative for all available subjects until study completion. Pharmacokinetic analysis showed a half-life of 27 days and extensive exposure to the study drug. Safety and tolerability of intramuscular Igantibe were good, with only one adverse event. CONCLUSION Standard-dose intramuscular Igantibe administration proved efficacious in post-liver transplantation prophylaxis by attaining protective levels for up to 6 months, was safe and well tolerated. Pharmacokinetic analysis revealed a long half-life and extensive exposure.
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Weber NK, Forman LM, Trotter JF. HBIg discontinuation with maintenance oral anti-viral therapy and HBV vaccination in liver transplant recipients. Dig Dis Sci 2010; 55:505-9. [PMID: 19802696 DOI: 10.1007/s10620-009-0999-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2009] [Accepted: 09/17/2009] [Indexed: 12/20/2022]
Abstract
BACKGROUND Hepatitis B (HBV) is an uncommon indication for liver transplantation in the US accounting for approximately 5% of cases. Recurrence prophylaxis is typically long-term hepatitis B immune-globulin (HBIg) and an oral anti-HBV agent. Because of high HBIg costs and improving efficacy of new oral agents, there is increasing interest in HBIg discontinuation. AIM To describe results of a protocol at our center including HBV vaccination and HBIg discontinuation. METHODS All patients received HBIg therapy and an oral anti-viral agent from the time of transplant. Patients transplanted for HBV with a stable post-operative clinical course underwent HBV vaccination and HBIg discontinuation. After HBIg discontinuation, patients were monitored for HBV recurrence for at least one year. Recurrence was defined as either viral (HBV-DNA 10(4) copies/ml on two consecutive occasions) or hepatitis (viral recurrence with elevated liver transaminases). RESULTS Of 1182 recipients, 36 (3%) had HBV. Twenty-four were excluded from the protocol, and the remaining 12 patients underwent HBIg withdrawal. Median age at HBIg discontinuation was 56 (range, 36-70) years, median time from transplant to HBIg discontinuation was 62.8 (range, 27.5-128) months, and median time of follow-up after discontinuation was 27.4 (range, 13-69) months. Of the 12 patients vaccinated, no patients maintained HBSAb >or= 10 IU/l at last follow-up. There was no viral or hepatitis recurrence and no deaths or graft loss. CONCLUSIONS HBIg discontinuation with maintenance oral anti-viral monotherapy is safe and effective for HBV liver transplant recipients. Vaccination is not effective in this population.
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Affiliation(s)
- Nicholas K Weber
- Division of Gastroenterology and Hepatology, University of Colorado Health Sciences Center, 1635 N Ursula, Aurora, CO 80045, USA.
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Jiang L, Jiang LS, Cheng NS, Yan LN. Current prophylactic strategies against hepatitis B virus recurrence after liver transplantation. World J Gastroenterol 2009; 15:2489-99. [PMID: 19468999 PMCID: PMC2686907 DOI: 10.3748/wjg.15.2489] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Prophylactic strategies against hepatitis B virus (HBV) recurrence after liver transplantation (LT) are essential for patients with HBV-related disease. Before LT, lamivudine (LAM) was proposed to be down-graded from first- to second-line therapy. In contrast, adefovir dipivoxil (ADV) has been approved not only as first-line therapy but also as rescue therapy for patients with LAM resistance. Furthermore, combination of ADV and LAM may result in lower risk of ADV resistance than ADV monotherapy. Other new drugs such as entecavir, telbivudine and tenofovir, are probably candidates for the treatment of hepatitis-B-surface-antigen-positive patients awaiting LT. After LT, low-dose intramuscular hepatitis B immunoglobulin (HBIG), in combination with LAM, has been regarded as the most cost-effective regimen for the prevention of post-transplant HBV recurrence in recipients without pretransplant LAM resistance and rapidly accepted in many transplant centers. With the introduction of new antiviral drugs, new hepatitis B vaccine and its new adjuvants, post-transplant HBIG-free therapeutic regimens with new oral antiviral drug combinations or active HBV vaccination combined with adjuvants will be promising, particularly in those patients with low risk of HBV recurrence.
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Perrillo R. Hepatitis B virus prevention strategies for antibody to hepatitis B core antigen-positive liver donation: a survey of North American, European, and Asian-Pacific transplant programs. Liver Transpl 2009; 15:223-32. [PMID: 19177436 DOI: 10.1002/lt.21675] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Prophylactic therapy is generally used to prevent reactivated hepatitis B after transplantation of an antibody to hepatitis B core antigen (anti-HBc)-positive liver. To gain insight into current practice, a questionnaire was e-mailed to 89 liver transplant physicians in the United States, Europe, and Asia/Australia and 4 hepatitis B experts. Addressees were asked if they prefer lamivudine or other nucleoside analogs and whether these drugs are used indefinitely. They were also questioned about the use of hepatitis B immune globulin (HBIg), the preferred duration of its administration, and whether treatment strategies differ according to the knowledge of the serologic status of the recipient. Responses were obtained from 78 physicians. All transplant physicians reported the use of nucleoside analog therapy, and 65% prefer lamivudine (58% versus 81% for US and non-US physicians, P = 0.05). Sixty-one percent use HBIg (38% always, 23% sometimes). HBIg was used more frequently in the United States than other parts of the world (69% versus 46%, P = 0.03). Eighty-one percent of transplant physicians use nucleoside analog therapy for an indefinite period, but the duration of HBIg treatment varies widely. Although some centers omit nucleoside analog or HBIg therapy in antibody to hepatitis B surface antigen-positive recipients, 90% will not omit these agents if the recipient is positive for anti-HBc alone. In conclusion, nucleoside analog therapy is nearly always used for anti-HBc-positive livers, and most transplant physicians treat for an indefinite period. Lamivudine continues to be preferred as first-line therapy. Many programs also use HBIg, but there is wide variation in the way this is administered. Further study is needed to determine the most cost-beneficial regimen.
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Affiliation(s)
- Robert Perrillo
- Hepatology Division, Baylor University Medical Center, Dallas, TX 75246, USA.
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Beckebaum S, Sotiropoulos GC, Gerken G, Cicinnati VR. Hepatitis B and liver transplantation: 2008 update. Rev Med Virol 2009; 19:7-29. [DOI: 10.1002/rmv.595] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Hooman N, Rifai K, Hadem J, Vaske B, Philipp G, Priess A, Klempnauer J, Tillmann HL, Manns MP, Rosenau J. Antibody to hepatitis B surface antigen trough levels and half-lives do not differ after intravenous and intramuscular hepatitis B immunoglobulin administration after liver transplantation. Liver Transpl 2008; 14:435-42. [PMID: 18383078 DOI: 10.1002/lt.21343] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Hepatitis B immunoglobulin (HBIG) administration remains an essential component of standard reinfection prophylaxis after liver transplantation for hepatitis B virus-related liver disease. Previous studies have suggested that intramuscular (IM) HBIG administration compared to intravenous (IV) HBIG administration may be cost-effective and dose-saving. To compare antibody against hepatitis B surface antigen (anti-HBs) kinetics after IV HBIG administration versus IM HBIG administration, 24 patients received 2000 IU of HBIG every 6 weeks over a study period of 48 weeks in a crossover design. HBIG was started intravenously in 12 patients (group A) and intramuscularly in 12 patients (group B). After 4 doses, at week 24 HBIG administration was switched from IM to IV and vice versa. Anti-HBs kinetics of 22 patients were evaluated. Mean anti-HBs levels measured 2, 4, and 6 weeks after each HBIG administration did not differ significantly (480 +/- 166, 319 +/- 126, and 221 +/- 106 IU/L after IV administration versus 457 +/- 166, 310 +/- 147, and 218 +/- 112 IU/L after IM administration). Half-lives of anti-HBs decline (IV, 25.5 +/- 6.0 days, versus IM, 24.7 +/- 6.2 days) and area under the curve values from week 2 to 6 (IV, 9.4 +/- 3.6 IU*day/mL, versus IM, 9.0 +/- 3.9 IU*day/mL) also showed no significant difference. Variation of anti-HBs levels after IV HBIG administration versus IM HBIG administration was neither significantly different within patients (intraindividual variance) nor between patients (interindividual variance). However, intraindividual variance was lower than interindividual variance after IV (P < 0.05) and IM (P < 0.05) HBIG administration at every time point (2, 4, and 6 weeks). In conclusion, IV HBIG administration and IM HBIG administration are equally effective with respect to the crucial pharmacokinetic parameters. That is, IM HBIG is not dose-saving; however, it may be cost-effective if the price per unit is lower. Individualized dosing intervals should be further evaluated as a cost-effective alternative to fixed dosing schemes.
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Affiliation(s)
- Nazanin Hooman
- Department of Gastroenterology, Medizinische Hochschule Hannover, Hannover, Germany
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Eisenbach C, Sauer P, Mehrabi A, Stremmel W, Encke J. Prevention of hepatitis B virus recurrence after liver transplantation. Clin Transplant 2007; 20 Suppl 17:111-6. [PMID: 17100710 DOI: 10.1111/j.1399-0012.2006.00609.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Liver transplantation for hepatitis B virus (HBV)-related liver disease has changed from a contraindication to outcomes comparable with non-HBV-related liver transplantations during the last two decades. Mainly the implementation of immunoprophylaxis with hepatitis B immunoglobulin (HBIG) and the use of nucleoside analogs such as lamivudine and adefovir account for this dramatic change. The standard of care in most centers today consists of lamivudine treatment in replicating hepatitis B pre-orthotopic liver transplantation (OLT) and a combination regimen of lamivudine and HBIG post-OLT. With adefovir, a potent antiviral drug became available in recent years that allows for the treatment of patients with lamivudine-resistant tyrosine-methionine-aspartate-aspartate (YMDD)-mutant HBV. In the transplantation setting, first studies indicate that a triple prophylactic therapy consisting of lamivudine, adefovir, and HBIG will become the standard of care for YMDD-mutant-related hepatitis B. With new drugs emerging for the treatment of chronic HBV, there is optimism for new options also in the transplant setting.
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Affiliation(s)
- Christoph Eisenbach
- Department of Internal Medicine IV, University of Heidelberg, Heidelberg, Germany.
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De Simone P, Carrai P, Baldoni L, Petruccelli S, Coletti L, Morelli L, Filipponi F. Quality assurance, efficiency indicators and cost-utility of the evaluation workup for liver transplantation. Liver Transpl 2005; 11:1080-5. [PMID: 16123969 DOI: 10.1002/lt.20484] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
We report the results of a retrospective review of the outpatient pretransplantation workup for United Network for Organ Sharing (UNOS) 3 patients adopted at a liver transplantation (LT) center and illustrate the efficiency indicators used for quality evaluation and cost-analysis. A single-center, pre-LT evaluation workup was performed on an outpatient basis at a cost per patient evaluation of 2,770 Euros (). Objective measures were: the number of patients admitted to and excluded from each phase of the algorithm; the rate of patients admitted to pre-LT evaluation out of the total of referred patients (the referral efficiency rate); the rate of waitlisted patients out of those admitted to pre-LT evaluation (the evaluation efficiency rate); the rate of waitlisted patients out of those referred for LT (the process efficiency rate); and the cost per waitlisted patient, as the ratio of the cost per patient evaluation to the evaluation efficiency rate. From January 1, 1996, to October 1, 2004, 1,837 patients were referred for LT on an outpatient basis. Based on preemptive evaluation of the available clinical data, 412 patients (22.4%) were excluded from pre-LT evaluation and 1,425 (77.6%) were admitted to preliminary consultation. Among these, 603 (42.3%) were excluded from and 822 (57.7%) were admitted to pre-LT evaluation with a referral efficiency rate of 44.7% (822 of 1,837). Out of the patients evaluated for LT, 484 were waitlisted with a cost-utility and evaluation efficiency rate of 58.8% each (484 of 822). Of the 1,837 patients originally addressed for LT 484 were waitlisted, yielding a process efficiency rate of 26.3% (484 of 1,837) and a cost per waitlisted patient of 4,710.8. In conclusion, the 3 indicators allowed monitoring of the efficiency of the pre-LT evaluation algorithm. The current process efficiency rate at our center is low (26.3%), but avoiding early referrals we might increase it to 31.6%, with a 12% net saving on costs per waitlisted patient (from 4,710.8 to 4,165.4).
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Affiliation(s)
- Paolo De Simone
- Liver Transplant Unit, University of Pisa, Cisanello Hospital, Pisa, Italy
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Wang ZX, Fu ZR, Ding GS, Zhang JJ, Fu H, Zhang M, Zhang CY. Prevention of hepatitis B virus reinfection after orthotopic liver transplantation. Transplant Proc 2005; 36:2315-7. [PMID: 15561235 DOI: 10.1016/j.transproceed.2004.07.070] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
OBJECTIVE We discuss the prevention of hepatitis B virus reinfection following orthotopic liver transplantation. METHODS Sixty-eight cases of chronic fulminant hepatitis B, the end stage of liver cirrhosis and liver carcinoma complicated with HBV cirrhosis, were given antiviral drugs pre- and posttransplantation to prevent hepatitis B virus reinfection. Lamivudine was administered to two cases and lamivudine + HBIG to 63 cases. Adefovir + HBIG was administered to three cases. The serum HBV, HBV DNA, liver biopsy immunohistochemistry and clinical examinations were performed. RESULTS One of two cases given lamivudine developed reinfection with serum HBSAg, HbeAb, HBcAb, HBV DNA, and positive and liver biopsy immunohistochemistry showing HBSAg phenotype. Two of the 63 cases given lamivudine + HBIG developed reinfection with serum HBSAg, HBeAb, HBcAb positive and liver biopsy immunohistochemistry showing HBSAg phenotype. The serum HBV DNA was positive in one of the two cases. Three cases given adefovir developed no reinfection with HBV. CONCLUSION Orthotopic liver transplantation is an effective treatment for HBV infection; lamivudine + HBIG or adefovir + HBIG prevent hepatitis B virus reinfection.
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Affiliation(s)
- Z-X Wang
- Liver Transplantation Group of Transplantation Center, Changzheng Hospital, Second Military University, Shanghai, People's Republic of China
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Abstract
PURPOSE OF REVIEW Hepatitis B and C infections are prevalent around the world and a major health burden due to the associated complications of hepatic fibrosis, cirrhosis and hepatocellular carcinoma which occur in the context of chronic infection. Significant advances are being made in assessing and treating infected patients and recent studies are now targeting patients who have failed to respond to previous treatments or who have associated co-morbidities. The purpose of this article to review the recent literature on the subject of hepatitis B and C infections with particular focus on new treatment options, new approaches in patients who have previously failed therapy and in those who have co-morbidity. RECENT FINDINGS A large number of studies have been carried out investigating the roles of varying doses, targeting treatment in particular groups and new treatment options in patients infected with hepatitis B and C. Several key findings such as the value of prolonging treatment in patients with genotype 1 hepatitis C infection, the use of pegylated interferon in chronic hepatitis B infection and the emergence of new treatments such as adefovir for resistant hepatitis B infection, as well as treatment of patients co-infected with hepatitis C and human immunodeficiency virus, have dominated the recent literature. Patients in particular groups such as those who have had liver transplantation or who are immunosuppressed have also received added attention. SUMMARY Hepatitis B and C infections are the focus of much current attention with particular regard to new and emerging treatment options which are becoming increasingly focused on varying patient groups.
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Abstract
Liver transplantation (LT) for end-stage liver disease (ESLD) secondary to hepatitis viruses has evolved rapidly during the last two decades. ESLD secondary to hepatitis C virus (HCV) accounts for approximately 50% of LT in the United States and Europe. Despite the decrease in the number of new HCV infections, the prevalence of advanced HCV-related liver disease is steadily increasing. In light of the near universal recurrence of posttransplantation HCV infection and our limited ability to treat recurrent disease, transplantation is in danger of being overrun by viral hepatitis, unless effective strategies can be used to treat disease, expand the donor pool of available organs, and prevent disease recurrence. In the early 1980s, results of LT for chronic hepatitis B virus infection were hampered by recurrent infection and subsequent allograft failure. However, with the introduction of passive immunoprophylaxis with hepatitis B immunoglobulin and treatment with potent nucleoside analogs, there has been a resurgence of LT for hepatitis B virus-related ESLD. Despite the wide acceptance of LT as a therapy for ESLD, there is little consensus on the appropriate immunosuppressive regimens, and prophylactic and therapeutic treatments vary widely from one center to another. This review summarizes available data and highlights appropriate strategies to improve outcomes.
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Affiliation(s)
- Michael P Curry
- Department of Medicine, Beth Israel Deaconess Medical Center, Boston, MA 02215, USA.
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Beckebaum S, Cicinnati VR, Gerken G, Broelsch CE. Management of chronic hepatitis B in the liver transplant setting. Transplant Rev (Orlando) 2004. [DOI: 10.1016/j.trre.2004.03.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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29
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Affiliation(s)
- Mark W Russo
- University of North Carolina, Chapel Hill, NC, USA
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