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Decreased Incidence of Acute Cellular Rejection in Low-Muscle-Mass Recipients After Living-donor Liver Transplantation. 2018

T Wakabayashi, and M Shinoda, and H Obara, and M Kitago, and H Yagi, and Y Abe, and K Matsubara, and Y Yamada, and G Oshima, and K Hirukawa, and T Mizota, and T Hibi, and O Itano, and K Hoshino, and T Kuroda, and Y Kitagawa
Department of Surgery, Keio University School of Medicine, Tokyo, Japan.

BACKGROUND Sarcopenia has recently been studied as a potential risk factor for mortality and complications after liver transplantation. We investigated the impact of low muscle mass on postoperative outcomes after living-donor liver transplantation. METHODS Our study population consisted of 100 adult recipients who underwent living-donor liver transplantation in our department between 2005 and 2017. Recipients were divided into a low-muscle-mass group (L group) and a normal-muscle-mass group (N group) based on skeletal muscle index (SMI) values, and postoperative outcomes were compared between the groups. Regarding factors that were significantly different between the groups, multivariate analyses were performed to identify predictive factors. RESULTS Based on the SMI definition, 47 and 53 of the recipients were categorized as having low muscle mass (L group) and normal muscle mass (N group), respectively. Comparison between the groups revealed a significantly reduced incidence of rejection (10.6% in L group vs 30.2% in N group, P = .017) and increased incidences of bacterial infection (61.7% in L group vs 37.7% in N group, P = .017) in the L group compared with the N group. The survival rate did not differ significantly between the groups. Multivariate analyses indicated that muscle mass was a significant predictive factor for both rejection and bacterial infection. CONCLUSIONS It is important to recognize that muscle mass has an impact not only on bacterial infection but also on rejection in recipients with low muscle mass in the postoperative course of living-donor liver transplantation.

UI MeSH Term Description Entries
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D011184 Postoperative Period The period following a surgical operation. Period, Postoperative,Periods, Postoperative,Postoperative Periods
D005260 Female Females
D006084 Graft Rejection An immune response with both cellular and humoral components, directed against an allogeneic transplant, whose tissue antigens are not compatible with those of the recipient. Transplant Rejection,Rejection, Transplant,Transplantation Rejection,Graft Rejections,Rejection, Graft,Rejection, Transplantation,Rejections, Graft,Rejections, Transplant,Rejections, Transplantation,Transplant Rejections,Transplantation Rejections
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D001424 Bacterial Infections Infections by bacteria, general or unspecified. Bacterial Disease,Bacterial Infection,Infection, Bacterial,Infections, Bacterial,Bacterial Diseases
D012307 Risk Factors An aspect of personal behavior or lifestyle, environmental exposure, inborn or inherited characteristic, which, based on epidemiological evidence, is known to be associated with a health-related condition considered important to prevent. Health Correlates,Risk Factor Scores,Risk Scores,Social Risk Factors,Population at Risk,Populations at Risk,Correlates, Health,Factor, Risk,Factor, Social Risk,Factors, Social Risk,Risk Factor,Risk Factor Score,Risk Factor, Social,Risk Factors, Social,Risk Score,Score, Risk,Score, Risk Factor,Social Risk Factor
D015994 Incidence The number of new cases of a given disease during a given period in a specified population. It also is used for the rate at which new events occur in a defined population. It is differentiated from PREVALENCE, which refers to all cases in the population at a given time. Attack Rate,Cumulative Incidence,Incidence Proportion,Incidence Rate,Person-time Rate,Secondary Attack Rate,Attack Rate, Secondary,Attack Rates,Cumulative Incidences,Incidence Proportions,Incidence Rates,Incidence, Cumulative,Incidences,Person time Rate,Person-time Rates,Proportion, Incidence,Rate, Attack,Rate, Incidence,Rate, Person-time,Rate, Secondary Attack,Secondary Attack Rates

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