Liver Fat Content and Bariatric Surgery

Study Overview
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Brief Summary
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On the basis of previous research, this subject intends to evaluate the liver improvement of patients with liver disease after weight loss by MRI, and quantify it by extracting features, so as to provide a new method to judge the liver status of patients with liver disease, and to evaluate the correlation between the inflammatory status of patients and the quantitative features of MRI, and try to explain the reasons for the improvement of fatty liver status of patients with liver disease after weight loss. To provide a new theoretical basis for fatty liver and systemic inflammatory liver damage in patients with liver disease after weight loss surgery, and to link them, and try to explain the improvement of fatty liver in patients with liver disease through the reduction of systemic inflammatory level.

Detailed Description
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This study is a prospective study to explore the improvement of fatty liver and severe state of the whole body in patients with liver disease undergoing weight-loss surgery. The research object is obese patients who underwent laparoscopic sleeve gastrectomy in our hospital. According to the standard of accepting the discharge, about 50 patients were selected and divided into groups according to preoperative, postoperative one month, postoperative three months and postoperative six months.All patients underwent routine sequence examinations using a Siemens 3.0T MRI scanner (MAGNETOM Prisma, Siemens Healthcare, Munich, Germany).This study investigates alterations in NAFLD among patients with obesity who underwent bariatric surgery using MRI-PDFF and MRS techniques. Additionally, we evaluated the factors that may influence these changes in patients after the surgical procedure.

Official Title
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Evaluation of Changes in Liver Fat Content and Exploration of Potential Effect Actors After Bariatric Surgery Based on MRI

Conditions
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Non-Alcoholic Fatty Liver Disease, Bariatric Surgery, Magnetic Resonance Imaging

Intervention / Treatment
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* Other: We do not have any intervention type


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: 16 years old < age < 60 years old BMI > 32kg/m2 No previous drinking history; weekly drinking of males < 210g and females < 140g in 12 months Preoperative auxiliary examination supports the diagnosis of fatty liver, and liver MRI examination Previous attempts to lose weight are ineffective Complete case data. Exclusion criteria: Secondary obesity History of drinking or excessive drinking (in the past 12 months, male's weekly alcohol intake was ≥210g, female's weekly alcohol intake was ≥ 140g) Other diseases causing abnormal liver function Body mass index < 28kg/m2 Poor compliance or self-control, unable to follow the dietary guidance after operation Those who cannot complete the follow-up

Ages Eligible for Study
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Minimum Age: 16 Years
Maximum Age: 60 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Before operation, 1 month after operation, 3 months after operation and 6 months after operation.<br>Patients who underwent bariatric surgery were followed up regularly before and after surgery. | Other: We do not have any intervention type<br>* We do not have any intervention type<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Liver fat fraction | The primary outcome was a indicator for evaluating liver fat content. | before surgery、one 、three、six month after surgery | 
| white blood cell | The primary outcome was a indicator for evaluating inflammation. | before surgery、one 、three、six month after surgery | 
| aspartate aminotransferase | The primary outcome was a indicator for evaluating liver function. | before surgery、one 、three、six month after surgery | 
| alanine aminotransferase | The primary outcome was a indicator for evaluating liver function. | before surgery、one 、three、six month after surgery | 
| C-reactive protein | The primary outcome was a indicators for evaluating inflammation. | before surgery、one 、three、six month after surgery | 
| neutrophile granulocyte | The primary outcome was a indicator for evaluating inflammation. | before surgery、one 、three、six month after surgery | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| low-density lipoprotein | The secondary outcome was a indicator for evaluating blood fat. | before surgery、one 、three、six month after surgery | 
| high-density lipoprotein | The secondary outcome was a indicator for evaluating blood lipid. | before surgery、one 、three、six month after surgery | 
| glucose | The secondary outcome was a indicator for evaluating blood glucose. | before surgery、one 、three、six month after surgery |