Objective: To investigate the effect of visceral fat area (VFA) on the surgical efficacy and early postoperative complications of radical gastrectomy for gastric cancer. Methods: A retrospective cohort study method was used. Clinicopathological data and preoperative imaging data of 195 patients who underwent D2 radical gastric cancer surgery at the First Affiliated Hospital of Xi'an Jiaotong University from January 2014 to December 2017 were analyzed retrospectively. Inclusion criteria: (1) complete clinicopathological and imaging data; (2) malignant gastric tumor diagnosed by preoperative pathology, and gastric cancer confirmed by postoperative pathology; (3) no preoperative complications such as bleeding, obstruction or perforation, and no distant metastasis. Those who had a history of abdominal surgery, concurrent malignant tumors, poor basic conditions, emergency surgery, palliative resection, and preoperative neoadjuvant therapy were excluded. The VFA was calculated by software and VFA ≥ 100 cm² was defined as visceral obesity according to the Japan Obesity Association criteria . The patients were divided into high VFA (VFA-H, VFA≥100 cm², n=96) group and low VFA (VFA-L, VFA<100 cm², n=99) group . The clinicopathological characteristics, surgical outcomes and early postoperative complications were compared between the two groups. Univariate and multivariate Logistic regression models were used to analyze the risk factors of early complications. Receiver operating characteristic (ROC) curve was used to analyze predictive values of VFA for early complications. Pearson's χ² test was used to analyze the correlation between BMI and VFA. Results: There were no significant differences in terms of gender, age, American Society of Anesthesiologists physical status classification, preoperative comorbidities, preoperative anemia, tumor TNM staging, N staging, T staging and tumor differentiation, surgical method, extent of resection, and tumor location between the VFA-L group and the VFA-H group (all P>0.05). However, patients in the VFA-H group had higher BMI, larger tumor, lower rate of hypoalbuminemia and greater subcutaneous fat area (SFA) (all P<0.05). The VFA-H group presented significantly longer operation time and significantly less number of harvested lymph nodes as compared to the VFA-L group (both P<0.05). However, there were no significant differences in intraoperative blood loss, conversion to laparotomy and postoperative hospital stay (all P>0.05). Complications of Clavien-Dindo grade II and above within 30 days after operation were mainly anastomosis-related complications (leakage, bleeding, infection and stricture), intestinal obstruction and incision infection. The VFA-H group had a higher morbidity of early complications compared to the VFA-L group [24.0% (23/96) vs 10.1% (10/99), χ²=6.657, P=0.010], and the rates of anastomotic complications and incision infection were also higher in the VFA group [10.4% (10/96) vs. 3.0% (3/99), χ²=4.274, P=0.039; 7.3% (7/96) vs. 1.0% (1/99), P=0.033]. Multivariate logistic analysis showed that high BMI (OR=3.688, 95%CI: 1.685-8.072, P=0.001) and high VFA (OR=2.526, 95%CI: 1.148-5.559,P=0.021) were independent risk factors for early complications. The area under the ROC curve (AUC) of VFA for predicting early complications was 0.645, which was higher than that of body weight (0.591), BMI (0.624) and SFA (0.626). Correlation analysis indicated that there was a significantly positive correlation between BMI and VFA (r=0.640, P<0.001). Conclusion: VFA ≥ 100 cm² is an independent risk factor for early complications after radical gastrectomy for gastric cancer.It can better predict the occurrence of above early postoperative complications.
Gastrectomy/methods* ; Humans ; Laparoscopy/methods* ; Lipids ; Obesity/surgery* ; Obesity, Abdominal/surgery* ; Postoperative Complications/epidemiology* ; Retrospective Studies ; Stomach Neoplasms/pathology*

BACKGROUD/AIMS: Obesity is a rising problem in industrialized countries. Numerous epidemiologic studies have shown a positive association between obesity and colorectal polyps. There are few studies investigating the association between colorectal adenomatous polyps and body fat composition in Korea. We tried to examine the relationship between body fatness and colorectal adenomatous polyps in health check-up subjects in Korea. METHODS: Six thousand seven hundred and six routine health check-up subjects, who visited our hospital between March 2002 and April 2005 and underwent distal colon examimation with sigmoidoscopy, were enrolled in this study. Among them, colonoscopy was done in 860 patients to evaluate the entire colon. We tried to reveal the relationship between body mass index (BMI) and size, location, number and histopathological type of polyps. BMI was used as an indicator of obesity. RESULTS: The mean value of BMI in total polyp-free group (23.8+/-2.9) was not different from that of the polyp group (24.5+/-2.8, p=0.09). The frequency of rectosigmoid polyps in obese patients (20.4%) was higher than that in non-obese patients (16.0%, p<0.05). The frequency of adenomatous polyp was not different between obese and non-obese group. Number of polyps (> or =4) correlated well with obesity. Moreover, age and triglyceride level in patients with colonic adenoma were significantly higher than in patients without colonic adenom. CONCLUSIONS: This study shows that obesity is not associated with colonic adenomatous polyp in Korean population. However, we observed that obesity may be associated with rectosigmoid colon polyps. Furthermore, age and triglyceride level might be the risk factors of colonic adenomatous polyps in Korean population.
Adenomatous Polyps/*complications/epidemiology/pathology ; Adult ; Aged ; Aged, 80 and over ; Body Mass Index ; Colonic Neoplasms/*complications/epidemiology/pathology ; Colonic Polyps/complications/epidemiology/pathology ; Comorbidity ; Female ; Humans ; Korea ; Male ; Middle Aged ; Obesity/*complications/diagnosis/epidemiology ; Retrospective Studies ; Sigmoidoscopy

OBJECTIVETo study the relationship between nonalcoholic fatty liver disease (NAFLD) and the development of cardiovascular disease (CVD) in children with obesity.

METHODSTwo hundred and thirty-one obese children and 24 non-obese children as control were enrolled. Body mass index (BMI), serum triglyceride, blood pressure, liver function, and carotid artery intima-media thickness (IMT) were examined. The obese children were classified into two subgroups according to the diagnosis criteria: group 1 without liver disorder (OCWLD group, n=75) and group 2 with NAFLD (NAFLD group, n=156). The incidences of hyperlipidemia and hypertension, carotid artery intima-media thickness (IMT) and biochemical indicators were compared in the three groups.

RESULTSThe NAFLD group showed significantly greater carotid IMT (0.066+/-0.021 cm) than the OCWLD (0.060+/-0.011 cm) and control groups (0.037+/-0.007 cm) (P<0.05). The OCWLD group had also thicker IMT than the control group (P<0.05). The incidences of hyperlipidemia and hypertension were 39.7% and 40.4%, respectively in the NAFLD group, which were significantly higher than those in the OCWLD (22.7% and 29.3% respectively)and control groups (4.2% and 12.6% respectively) (P<0.05). The liner stepwise regression analysis showed that the IMT was positively correlated with BMI, NAFLD and ALT (adjusted R2=0.316, P<0.01).

CONCLUSIONSNAFLD may be not only an early marker but also an early state of CVD in obese children. Early diagnosis and treatment of NAFLD is crucial for the prevention of the occurrence and development of CVD.

Adolescent ; Adult ; Cardiovascular Diseases ; etiology ; Carotid Arteries ; pathology ; Child ; Fatty Liver ; complications ; Female ; Humans ; Hypertension ; epidemiology ; Male ; Obesity ; complications

Only a few studies have evaluated the population-adjusted prevalence of gallbladder polyps (GBP). This study aimed to evaluate the changes in GBP prevalence and risk factors at a single health screening center in Korea from 2002 to 2012. Of 48,591 adults who underwent health screening between 2002 and 2012, 14,250 age- and gender-matched subjects were randomly selected to evaluate prevalence. Risk factors were analyzed between the GBP-positive and GBP-negative groups during 2002-2004 (Period A) and 2010-2012 (Period B). The annual prevalence of GBP over the 11-yr period was 5.4%. Annual prevalence increased from 3.8% in Period A to 7.1% in Period B. Male gender and obesity were independent risk factors for GBP in both periods. Hepatitis B virus surface antigen (HBsAg) positivity was a risk factor for GBP in Period A but not in Period B. The risk factors for GBP changed from HBsAg positivity to lipid profile abnormalities. Other variables including age, hypertension, diabetes, impaired fasting glucose, chronic hepatitis C virus infection, and liver function tests did not correlate with GBP. In conclusion, GBP prevalence is increasing and risk factors for GBP have changed in Korea. More attention should be paid to this issue in the future.
Adult ; Aged ; Female ; Gallbladder Diseases/complications/*epidemiology ; Hepatitis B/complications ; Hepatitis B Surface Antigens/blood ; Humans ; Male ; Middle Aged ; Obesity/complications ; Polyps/*epidemiology/pathology ; Prevalence ; Republic of Korea/epidemiology ; Risk Factors ; Sex Factors

Central obesity has been reported as a risk for atherosclerosis and metabolic syndrome. The influence of central obesity on diurnal blood pressure (BP) has not been established. In this study, we investigated the influence of central obesity on the circadian parameters of BP by 24 hr ambulatory BP monitoring. Total 1,290 subjects were enrolled from the Korean Ambulatory BP registry. Central obesity was defined as having a waist circumference> or =90 cm in males and > or =85 cm in females. The central-obese group had higher daytime systolic BP (SBP), nighttime SBP and diastolic BP (DBP) than the non-obese group (all, P<0.001). There were no differences in nocturnal dipping (ND) patterns between the groups. Female participants showed a higher BP mean difference (MD) than male participants with concerns of central obesity (daytime SBP MD 5.28 vs 4.27, nighttime SBP MD 6.48 vs 2.72) and wider pulse pressure (PP). Central obesity within the elderly (> or =65 yr) also showed a higher BP MD than within the younger group (daytime SBP MD 8.23 vs 3.87, daytime DBP 4.10 vs 1.59). In conclusion, central obesity has no influence on nocturnal dipping patterns. However, higher SBP and wider PP are associated with central obesity, which is accentuated in women.
Adult ; Age Factors ; Aged ; Asian Continental Ancestry Group ; Blood Pressure/physiology ; *Blood Pressure Monitoring, Ambulatory ; Circadian Rhythm/*physiology ; Female ; Humans ; Hypertension/*complications/epidemiology ; Male ; Middle Aged ; Obesity, Abdominal/*complications/*epidemiology/pathology ; Registries ; Republic of Korea/epidemiology ; Sex Factors ; Waist Circumference

There are conflicting data as to whether general or abdominal obesity is a better predictor of cardiovascular risk. This cross-sectional study involved 4,573 subjects aged 30 to 74 yr who participated in the Fourth Korea National Health and Nutrition Examination Survey conducted in 2008. Obesity phenotype was classified by means of body mass index (BMI) and waist circumference (WC), and participants were categorized into 4 groups. Individuals' 10-yr risk of coronary heart diseases (CHD) was determined from the Framingham risk score. Subjects with obese WC had a higher proportion of high risk for CHD compared to the normal WC group, irrespective of BMI level. Relative to subjects with normal BMI/normal WC, the adjusted odds ratios (ORs) of normal BMI/obese WC group (OR 2.93 [1.70, 5.04] and OR 3.10 [1.49, 6.46]) for CHD risk in male were higher than obese BMI/obese WC group (OR 1.91 [1.40, 2.61] and OR 1.70 [1.16, 2.47]), whereas the adjusted ORs of obese BMI/obese WC group (OR 1.94 [1.24, 3.04] and OR 3.92 [1.75, 8.78]) were higher than the others in female. Subjects with obese BMI/normal WC were not significantly associated with 10-yr CHD risk in men (P = 0.449 and P = 0.067) and women (P = 0.702 and P = 0.658). WC is associated with increased CHD risk regardless of the level of BMI. Men with normal BMI and obese WC tend to be associated with CHD risk than those with obese BMI and obese WC.
Adult ; Aged ; Body Mass Index ; Coronary Disease/epidemiology/*etiology ; Cross-Sectional Studies ; Female ; Humans ; Male ; Middle Aged ; Nutrition Surveys/statistics & numerical data ; Obesity/*complications/epidemiology/*pathology ; Odds Ratio ; Phenotype ; Republic of Korea/epidemiology ; Risk Factors ; Waist Circumference

BACKGROUND/AIMS: Abdominal obesity and hyperinsulinemia or insulin resistance are of interest in connection with colon carcinogenesis. We conducted a prospective case controlled study for the evaluation of relationship between abdominal obesity, insulin resistance, and colorectal adenoma. METHODS: Fifty patients with colorectal adenoma and fifty healthy subjects were included in this study. Total colonoscopic examinations were performed in all the subjects. Fasting blood sugar (FBS), insulin, homeostasis model assessment (HOMA-IR), triglyceride (TG), cholesterol (CROL), BMI (body mass index), WHR (waist hip ratio), percent body fat (PBF) and obesity degree (OD) were measured. HOMA-IR was considered to represent insulin resistance. Diabetic patients were excluded from this study. RESULTS: There were no differences in sex, serum insulin, FBS, HOMA-IR, TG, CROL between adenoma and control group. Subjects with high BMI, WHR, percent body fat, and obesity were more likely to have colonic adenoma. Multiple logistic regression analysis after adjusting confounding factors, had revealed that WHR was the most important independent risk factor for colon adenoma. CONCLUSIONS: Abdominal obesity was most closely related to colonic adenoma. However, insulin resistance was not related to colonic adenoma. A larger case controlled study is needed.
*Abdominal Fat ; Adenoma/diagnosis/epidemiology/*etiology ; Aged ; Body Fat Distribution ; Body Mass Index ; Colonic Neoplasms/diagnosis/epidemiology/*etiology ; Colonoscopy ; Female ; Humans ; *Insulin Resistance ; Male ; Middle Aged ; Obesity/*complications/epidemiology/pathology ; Risk Factors ; Waist-Hip Ratio

OBJECTIVEObesity is a major risk factor for type 2 diabetes, many indexes can be used to describes obesity and predict diabetes. This research attempts to identify the best indicator of obesity to screening diabetes in Chinese population.

METHODSA cross-sectional data of 8121 subjects aged 35-60 years were included in this research belongs to the Diabetes Appropriate Technology Intervention Study. Anthropometric indicators including body weight, height, waist circumferences (WC), body fat index (BFI) and visceral fat index (VFI) and blood biochemical indicators after an overnight fast [fasting blood glucose, total cholesterol, high-density lipoprotein (HDL) cholesterol, and triacylglycerol] were measured. BMI (body mass index) and Weight to Height Ratio was calculated.

RESULTSSubjects with obesity had a higher risk of physician diagnosed diabetes (OR=2.50, 95% CI 1.83-3.43), new diagnosed diabetes (OR=4.23, 95% CI 2.91-6.15) and pre-diabetes (OR=1.75, 95% CI 1.31-2.34) compared to those with normal Body mass index (BMI). There was a significant trend of increased risk of all diabetes status with increased waist circumference (WC). The waist-to-height ratio (WHtR) yielded the most significant association with new diagnosed diabetes and physician diagnosed diabetes than other indices.

CONCLUSIONCentral obesity is significantly correlated with diabetes. VFI was most correlated with pre-diabetes while WHtR is an efficient screening index than BMI and WC in Chinese community diabetes screening.

Adipose Tissue ; physiology ; Adult ; Aged ; Asian Continental Ancestry Group ; Blood Glucose ; Body Mass Index ; China ; epidemiology ; Cross-Sectional Studies ; Diabetes Mellitus, Type 2 ; epidemiology ; etiology ; pathology ; Female ; Humans ; Male ; Middle Aged ; Obesity ; complications ; Waist Circumference ; Waist-Hip Ratio

OBJECTIVETo explore clinical and pathological features of chronic hepatitis B (CHB) with hepatic steatosis.

METHODSRetrospective analysis of hepatic steatosis in patients with liver biopsy-proven CHB between January 2005 and June 2008. Detailed clinical, laboratory and pathological data of CHB patients with steatosis were compared with those in sex-, age- matched CHB patients without steatosis. Patients co-infected hepatitis C virus or HIV or suffering from liver diseases of other causes were excluded.

RESULTSHistological hepatic steatosis was found in 33.4% of the 1263 CHB patients. The prevalence of steatosis was increased with time in the study period (20.3%, 28.2%, 32.6%, 65.4%, in trend analysis, P values less than 0.05). Body mass index, fasting plasma glucose, serum triglyceride and total cholesterol level in CHB patients with hepatic steatosis (n = 114) were significantly higher than those in 113 patients without steatosis (t values were 6.811, 2.733, 3.063, 2.340, respectively, P values less than 0.01 or 0.05). Compared to patients without steatosis, serum hepatitis B virus DNA titer in patients with steatosis was significantly lower (x2 = 6.154, P less than 0.05) and reduced sharply with the increased degree of hepatic steatosis (x2 = 4.941, P less than 0.05). There were no differences in liver biochemical test (t values were 0.744, 1.390, -0.029, -1.175, 1.393, respectively, P values more than 0.05), hepatic inflammation grade and fibrosis stage between CHB patients with and without steatosis (x2 = 1.434, 0.106, respectively, P more than 0.05), and these parameters were not associated with different degree of hepatic steatosis (x2 = 2.447, 2.911, respectively, P more than 0.05).

CONCLUSIONSHepatic steatosis is common in patients with CHB, and is related to metabolic disorders. Hepatic steatosis does not affect the severity of CHB. The reverse association of hepatitis B virus titer with the degree of hepatic steatosis needs further investigation.

Alanine Transaminase ; blood ; Biomarkers ; blood ; Body Mass Index ; Cholesterol ; blood ; DNA, Viral ; blood ; Fatty Liver ; epidemiology ; etiology ; pathology ; Female ; Hepatitis B virus ; Hepatitis B, Chronic ; complications ; pathology ; virology ; Humans ; Liver ; pathology ; virology ; Liver Cirrhosis ; epidemiology ; etiology ; pathology ; Male ; Obesity ; complications ; Retrospective Studies ; Risk Factors ; Severity of Illness Index

Aged ; Body Mass Index ; Carotid Arteries ; diagnostic imaging ; pathology ; Carotid Artery Diseases ; diagnosis ; epidemiology ; etiology ; Cholesterol, HDL ; blood ; Fatty Liver ; complications ; diagnosis ; epidemiology ; Female ; Humans ; Insulin Resistance ; Intercellular Signaling Peptides and Proteins ; blood ; Male ; Metabolic Syndrome ; complications ; Middle Aged ; Obesity ; complications ; Risk Factors ; Triglycerides ; blood ; Tunica Intima ; diagnostic imaging ; pathology ; Ultrasonography