Review
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©The Author(s) 2018. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Gastroenterol. Jun 21, 2018; 24(23): 2441-2456
Published online Jun 21, 2018. doi: 10.3748/wjg.v24.i23.2441
Table 1 Recommended minimum graft-to-recipient weight ratio in different studies
Ref .Recommended minimum GRWR n (small vs large)One-year survival (small vs large) Five-year survival (small vs large) Study type Kiuchi et al [10 ] (1999) 1% 276 (49 vs 215) 61.2% vs 92.6% NS RS Lee et al [11 ] (2003) 0.8% 141 (10 vs 131) Univariate and multiple analysis NS RS Moon et al [13 ] (2010) Less than 0.8% 427 (35 vs 392) 87.8% vs 90.7% 74.1% vs 79.4% RS Lan et al [14 ] (2009) Less than 0.8% 89 (15 vs 74) 73.3% vs 71.6% NS RS Selzner et al [15 ] (2009) Less than 0.8% 271 (22 vs 249) 91.0% vs 89.0% 83.0% vs 87% RS Chen et al [16 ] (2014) Less than 0.8% 196 (45 vs 151) 82.2% vs 81.4% 71.1% vs 75.5% RS She et al [17 ] (2017) Left lobe graft vs right lobe graft 218 (19 vs 199) 89.5% vs 95.9% 89.5% vs 86.8% RS Lee et al [18 ] (2014) Less than 0.7% 317 (23 vs 294) 100% vs 93.2% NS RS Alim et al [19 ] (2016) 0.6% 649 Seven patients had GRWR of 0.6%. If MELD score was below 20, donor age below 45, and no signs for any hepatosteatosis, GRWR of 0.6% was safe RS Lee et al [20 ] (2015) 0.40% NS Lowest GRWR of 0.40% had been successfully used RS
Table 2 Incidence of small-for-size syndrome when using small-for-size grafts n (%)
Ref .n SFSS (Incidence) Factors to SFSS Study type Goldaracena et al [21 ] (2017) NS NS A graft GRWR < 0.8% of predisposes the graft to SFSS RE Graham et al [22 ] (2014) NS NS GRWR of 0.8 to 1.0 was established as a lower limit to prevent SFSS RE Botha et al [23 ] (2010) 21 1 (4.7) Hemi-portocaval shunt can decrease SFSS incidence RS Goralczyk et al [24 ] (2011) 22 5 (22.7) Posterior cavoplasty can decrease SFSS incidence RS Soejima et al [25 ] (2003) 36 8 (22.2) Cirrhosis predisposes the graft to SFSS RS Ben-Haim et al [26 ] (2001) 40 5 (8) Child’s class B or C with received grafts of GRWR < 0.85% predisposes the graft to SFSS RS Sudhindran et al [27 ] (2012) NS 10%-20% Left lobe grafts predisposes the graft to SFSS RE Yi et al [28 ] (2008) 29 8 (27.5) Left lobe grafts predisposes the graft to SFSS RS Soejima et al [29 ] (2012) 312 43 (15.3) Left lobe grafts predisposes the graft to SFSS RS Gruttadauria et al [30 ] (2015) 83 13 (15.7) Non-surgical modulation of the portal inflow can decrease SFSS incidence RS Shoreem et al [31 ] (2017) 174 20 (11.5) Left lobe grafts predisposes the graft to SFSS RS Lauro et al [32 ] (2007) 8 4 (50) Surgical modulation of the portal inflow can decrease SFSS incidence RS
Table 3 Remedies when using small-for-size graft
Ref .n Remedy for using small-for-size graft Study type Botha et al [23 ] (2010) 21 Hemi-portocaval shunt can decrease SFSS incidence RS Goralczyk et al [24 ] (2011) 22 Posterior cavoplasty can decrease SFSS incidence RS Kim et al [47 ] (2017) 160 Preserving collateral veins on small-for-size grafts RS + PSM Hessheimer et al [48 ] (2011) NS Portocaval shunt AE Xiao et al [49 ] (2012) 1 Transjugular intrahepatic portosystemic shunt CR Sato et al [50 ] (2008) 4 Portocaval shunt using ligamentum teres CR Nutu et al [51 ] (2018) 2 Complete splenic embolization CR Badawy et al [52 ] (2017) 164 Splenectomy RS Troisi et al [53 ] (2016) NS Splenic artery ligation, splenectomy, meso-caval shunt, spleno-renal shunt, portocaval shunt, and splenic artery embolization SR Xu et al [54 ] (2015) NS Dual grafts RE Gao et al [55 ] (2017) NS Adipose-derived mesenchymal stem cells tranplantation AE Kobayashi et al [56 ] (2009) 5 Auxiliary partial liver transplantation CR
Table 4 Older donors for living donor liver transplantation
Ref .Definition of older donors n (older vs young)One-year survival (older vs young) Five-year survival (older vs young) Study type Tanemura et al [58 ] (2012) 50 yr old 101 (24 vs 77) Older donor livers might have impaired regenerative ability RS Ono et al [60 ] (2011) 50 yr old 15 (6 vs 9) Liver regeneration is impaired with age after donor hepatectomy RS Akamatsu et al [61 ] (2007) 50 yr old 299 (62 vs 237) 85.0% vs 93.0% 72.0% vs 87.0% RS Kawano et al [62 ] (2014) NS 12 Donor age is a crucial factor affecting telomere length sustainability in hepatocytes after pediatric LDLT PS Imamura et al [63 ] (2017) NS 198 A worse outcome might be associated with aging of the donor RS Dayangac et al [64 ] (2011) 50 yr old 150 (28 vs 122) 78.6% vs 83.4% NS RS Yoshizumi et al [65 ] (2008) NS 28 Graft size, donor age, and patient status are the indicators of early graft function RS Han et al [66 ] (2014) 55 yr old 604 (26 vs 578) Median OS (M): 31.2 ± 31.3 vs 50.6 ± 40.6 RS Kamo et al [67 ] (2015) 60 yr old 1597 (69 vs 1528) 69.5% vs 81.2% 62.0% vs 79.3% RS Shin et al [68 ] (2013) Donor-recipient age gradient > 20 821 Worse graft survival was observed if the donor is older than the recipient by > 20 RS Kubota et al [69 ] (2017) 50 yr old 315 (126vs 189) 73.0% vs 80.9% 39.7% vs 47.1% RS Katsuragawa et al [70 ] NS 24 G/SLV and donor age were independent factors that affected graft survival rates RS Wang et al [72 ] (2015) 50 yr old 159 (10 vs 149) 100% vs 93.0% 90.0% vs 87.0% RS Ikegami et al [73 ] (2008) 50 yr old 232 (32 vs 200) 80.0% vs 81.7% 73.8% vs 76.7% RS Li et al [74 ] (2012) 50 yr old 129 (21 vs 108) 90.0% vs 86.0% 66.0% vs 75% RS Goldaracena et al [75 ] (2016) 50 yr old 469 (91 vs 378) 92.0% vs 96.0% 83.0% vs 79.0% RS Kim et al [76 ] (2017) 55 yr old 540 (42 vs 498) 95.2% vs 94.6% NS RS
Table 5 Impact of ABO-incompatible on living donor liver transplantation
Ref .n Complications Incidence of related complication (%) Risk factors Study type Miyata et al [80 ] (2007) 57 Thrombotic microangiopathy 7.0 ABO-incompatibility, CPA, and recipient blood group (type O) RS Oya et al [81 ] (2008) 1 Thrombotic microangiopathy NS ABO-incompatible LDLT (type B to O) CR Kishida et al [82 ] (2016) 129 Thrombotic microangiopathy 10.1 ABO-incompatible, tacrolimus RS Song et al [83 ] (2014) 1102 Biliary stricture 15.8 ABO-incompatible, acute cellular rejection RS Ikegami et al [84 ] (2016) 408 Biliary stricture 20.4 ABO-incompatible RS Yamada et al [88 ] (2010) 1 Idiopathic hypereosinophilic NS ABO-incompatible CR
Table 6 Remedies when using ABO- incompatible on living donor liver transplantation
Ref .n Immunosuppression strategy Remedies Conclusion Study type Kawagishi et al [89 ] (2009) 105 TAC + MP + AZ Rituximab ABO-incompatible LDLT can be feasible used if humoral rejection are overcome RS Yoon et al [90 ] (2018) 918 TAC + MP + steroids Rituximab and PE ABO-incompatible LDLT is a feasible option under remedies RS Sakai et al [91 ] (2017) 20 TAC+ MP Rituximab and PE FCGR SNPs influence the effect of rituximab on B-cells PS Egawa et al [92 ] (2017) 33 TAC Rituximab, PE, local infusion, splenectomy and immunoglobulins Only rituximab dose is a significantly favorable factor for AMR RS Ikegami et al [93 ] (2007) 1 TAC + MP + steroids Rituximab and PE Rituximab and plasma exchanges seemed ineffective CR Ikegami et al [94 ] (2009) 7 TAC + MP + steroids Rituximab, IVIG, and PE Rituximab, IVIG, and PE seems to be a safe treatment RS Usui et al [95 ] (2007) 73 TAC + MP + steroids Rituximab, PE and splenectomy Bone suppression is a big challenge when using rituximab RS Chen et al [96 ] (2017) 2 TAC + MP + steroids Basiliximab combine with splenectomy ABO-i LDLT with splenectomy is undoubtedly life-saving CR Uchiyama et al [97 ] (2011) 15 TAC + MP + steroids Rituximab and PE Isoagglutinin mediated-rejection should be more concerned RS Soin et al [98 ] (2014) 3 TAC + MP + steroids Rituximab and PE ABO-incompatible LDLT is a feasible option under remedies CR Rummler et al [99 ] (2017) 10 TAC + MP + steroids PE Immunosuppression only combining with PE is feasible RS Kim et al [100 ] (2016) 182 TAC + MP + steroids Rituximab, IVIG, and PE ABO-incompatible LDLT can be safely performed under remedies RS Kim et al [101 ] (2013) 22 TAC + MP + steroids Rituximab and PE ABO-incompatible LDLT can be safely performed under remedies RS Kawagishi et al [102 ] (2005) 3 TAC + MP + steroids Rituximab and PE ABO-incompatible LDLT can be safely performed under remedies CR Kim et al [103 ] (2017) 43 TAC + MP + steroids Rituximab and IVIG A simplified protocol using rituximab and IVIG for ABO-I LDLT is safe RS Yoshizawa et al [104 ] (2005) 8 TAC + MP + cyclophosphamide Rituximab and PGE1 infusion Rituximab prophylaxis and HA infusion therapy is feasible RS Egawa et al [105 ] (2008) 118 TAC + steroids Methylprednisolone and PGE1 infusion Recipients with preexisting high effector CD8 T- cells are unfavorable candidates for ABO-I LDLT RS Yamamoto et al [106 ] (2018) 40 TAC + MP + steroids Rituximab monotherapy Rituximab monotherapy is feasible RS
Table 7 Impact of graft steatosis on living donor liver transplantation
Ref .n Conclusion Study type Dirican et al [9 ] (2015) 161 Approximately 40% of donor grafts are discarded because of severe liver steatosis RS Perkins et al [109 ] (2006) NS Typically steatotic livers with > 60% fat are not transplanted; with < 30% fat are usable and anticipated to have good function; with 30%-60% fat give poor results Comments Kotecha et al [110 ] (2013) 340 Hepatic steatosis is a leading cause of donor rejection in LDLT PS Cho et a [111 ]l (2010) 54 Hepatocyte replication is impaired during steatotic liver regeneration after LDLT PS Cho et al [112 ] (2006) 67 Hepatic steatosis is associated with intrahepatic cholestasis and transient hyperbilirubinemia during regeneration PS Cho et al [113 ] (2005) 55 Mildly steatotic graft did not increase the risk of graft dysfunction or morbidity in LDLT PS Gao et al [114 ] (2009) 24 Moderately steatotic (30%-60%) liver grafts provide adequate function in the first phase after transplantation and can be used for transplantation RS Knaak et al [115 ] (2017) 105 Donors with BMI > 30, in the absence of graft steatosis, are not contraindicated for LDLT RS Han et al [116 ] (2015) 211 The risk of steatosis may be determined by the relative composition of MiS and MaS, rather than the total quantitative degree RS
Table 8 Treatments for fat donors
Ref .n Treatments Study type Oshita et al [117 ] (2012) 128 Diet treatment consisting of an 800 to 1400 kcal/d diet and a 100 to 400 kcal/d exercise regimen without drug treatment, targeting body mass index of 22 kg/m² RS Nakamuta et al [118 ] (2013) 11 Bezafibrate (400 mg/d) was used along with a protein-rich (1000 kcal/d) diet and exercise (600 kcal/d) for 2-8 wk RS Choudhary et al [119 ] (2015) 16 1200 kcal/d and a minimum of 60 min/d of moderate cardio training are also recommended to rapidly reverse liver steatosis in donors PS Moon et al [120 ] (2006) 2 Dual-graft living donor liver transplantation for severe graft steatosis CR
Table 9 Impact of HBsAg or HBcAb(+) grafts on HBsAg(-) living donor liver transplantation patients
Ref .Donor Incidence of de novo HBV infection (%) Prevention of de novo HBV infection Study type Wang[121 ] (2017) HBcAb(+) 4.2 HBV vaccinations with the aim of achieving anti-HBs > 1000 IU/L pre-transplant and > 100 IU/L post-transplant RS Xi et al [122 ] (2013) HBcAb(+) 23.9 No prophylaxis, adefovir, and lamivudine are given to de novo patients RS Dong et al [123 ] (2017) HBcAb(+) 7.9 HBIG 100 IU/kg during the operation and lamivudine 3 mg/kg per day after the surgery for at least 1 year until HBV vaccine reaction RS Loggi et al [124 ] (2016) HBsAg(+) NS HBIG and lamivudine, adefovir or tenofovir SR Lei et al [125 ] (2013) HBcAb(+) 15.0 No specific prophylaxis RS Lin et al [126 ] (2007) HBcAb(+) 3.3 Lamivudine monoprophylaxis, HBV vaccinations RS Hara et al [127 ] (2016) HBcAb(+) NS Lamivudine first and adefovir dipivoxil were combined with lamivudine 2 yr later CR
Table 10 Impact of HBsAg or HBcAb(+) grafts on HBsAg(+) living donor liver transplantation patients
Ref .Donor Incidence of de novo HBV infection Prevention of De Novo HBV infection Study type Hwang et al [129 ] (2006) HBsAg(+) NS High-dose HBIG and lamivudine, famciclovir and interferon; a final regimen of lamivudine and adefovir CR Soejima et al [130 ] (2007) HBsAg(+) NS lamivudine and adefovir dipivoxil CR Jeng et al [131 ] (2015) HBsAg(+) NS Entecavir 0.5 mg once daily RS
Table 11 Graft with hepatic benign tumor
Ref .n Type of tumors in grafts Prognosis Study type Li et al [133 ] (2017) 15 Cavernous hemangioma, perivascular epithelioid cell tumor, inflammatory pseudotumor, and focal nodular hyperplasia One patient died from pulmonary embolism OS Fuchino et al [134 ] (2017) 1 HBsAg(+) and inflammatory pseudotumor Tumor vanished after 3 yr CR