Changes in serum albumin and liver enzymes following three different types of bariatric surgery

six-month follow-up. A retrospective cohort study

Authors

Keywords:

Bariatric surgery, Metabolic surgery, Transaminases, Serum albumin, Body composition

Abstract

BACKGROUND: Few reports have examined the effects of Roux-en-Y gastric bypass (RYGB), one-anastomosis gastric bypass (OAGB) and sleeve gastrectomy (SG) on changes to serum albumin (Alb) and liver enzyme levels. OBJECTIVE: To compare short-term post-surgery changes in serum Alb, aspartate aminotransferase (AST), alanine aminotransferase (ALT) and alkaline phosphatase (ALKP) levels. Body composition changes were also measured and compared among three groups. DESIGN AND SETTING: Retrospective cohort study conducted in Tehran, Iran. METHODS: 151 OAGB, RYGB and SG patients referred to the obesity clinic of Hazrat-e Rasool General Hospital, Tehran, Iran, were evaluated. Physical characteristics and biochemical parameters were measured pre-surgery and then after three and six months. RESULTS: Through repeated measurements to determine intragroup changes, significant changes in serum AST (P = 0.003) and ALT (P < 0.001) were observed in follow-ups. However, Alb levels did not change (P = 0.413). Body fat, fat-free mass and muscle mass decreased significantly in each group (P < 0.05). In a univariate general linear model for determining intergroup changes, SG showed greater decreases in ALT and AST at three and six months (P < 0.05) and in ALKP at six months (P = 0.037), compared with OAGB. There were no significant differences in Alb levels. Also, RYGB had a greater effect on reducing fat percentage (three months, P = 0.011; six months, P = 0.059) and fat mass (three months, P = 0.042) than OAGB. CONCLUSION: SG and RYGB may be superior to OAGB in reducing liver enzymes and body fat, respectively. However, Alb levels showed no significant differences.

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Author Biographies

Mohadeseh Hassan Zadeh, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences

Undergraduate Student, Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran.

Negar Zamaninour, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences

PhD. Nutritionist, Minimally Invasive Surgery Research Center, Iran University of Medical Sciences, Tehran, Iran.

Hastimansooreh Ansar, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences

PhD. Nutritionist, Minimally Invasive Surgery Research Center, Iran University of Medical Sciences, Tehran, Iran.

Ali Kabir, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences

MD, MPH, PhD. Associate Professor, Minimally Invasive Surgery Research Center, Iran University of Medical Sciences, Tehran, Iran.

Abdolreza Pazouki, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences

MD. Associate Professor of Surgery, Minimally Invasive Surgery Research Center, Iran University of Medical Sciences, Tehran, Iran; and Associate Professor, Center of Excellence of European Branch of International Federation for Surgery of Obesity, Tehran, Iran.

Gholamreza Mohammadi Farsani, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences

MD, MPH, PhD. Assistant Professor, Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran; and Assistant Professor, Minimally Invasive Surgery Research Center, Iran University of Medical Sciences, Tehran, Iran.

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Published

2021-11-04

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Zadeh MH, Zamaninour N, Ansar H, Kabir A, Pazouki A, Farsani GM. Changes in serum albumin and liver enzymes following three different types of bariatric surgery: six-month follow-up. A retrospective cohort study. Sao Paulo Med J [Internet]. 2021 Nov. 4 [cited 2025 Mar. 9];139(6):598-606. Available from: https://periodicosapm.emnuvens.com.br/spmj/article/view/552

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