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Treatment for non-alcoholic fatty liver disease (NAFLD) currently consists of lifestyle modifications such as a low-fat diet, weight loss, and exercise. The gut microbiota forms part of the gut–liver axis and serves as a potential target for NAFLD treatment. We investigated the effect of probiotics on hepatic steatosis, fibrosis, and biochemical blood tests in patients with NAFLD. At the small intestinal mucosal level, we examined the effect of probiotics on the expression of CD4+ and CD8+ T lymphocytes, as well as the tight junction protein zona occluden-1 (ZO-1). This was a randomized, double-blind, placebo-controlled trial involving ultrasound-diagnosed NAFLD patients (n = 39) who were supplemented with either a probiotics sachet (MCP® BCMC® strains) or a placebo for a total of 6 months. Multi-strain probiotics (MCP® BCMC® strains) containing six different Lactobacillus and Bifidobacterium species at a concentration of 30 billion CFU were used. There were no significant changes at the end of the study in terms of hepatic steatosis (probiotics: −21.70 ± 42.6 dB/m, p = 0.052 vs. placebo: −10.72 ± 46.6 dB/m, p = 0.29) and fibrosis levels (probiotics: −0.25 ± 1.77 kPa, p = 0.55 vs. placebo: −0.62 ± 2.37 kPa, p = 0.23) as measured by transient elastography. Likewise, no significant changes were found for both groups for the following parameters: LiverFAST analysis (steatosis, fibrosis and inflammation scores), alanine aminotransferase, total cholesterol, triglycerides, and fasting glucose. In the immunohistochemistry (IHC) analysis, no significant expression changes were seen for CD4+ T lymphocytes in either group (probiotics: −0.33 ± 1.67, p = 0.35 vs. placebo: 0.35 ± 3.25, p = 0.63). However, significant reductions in the expression of CD8+ T lymphocytes (−7.0 ± 13.73, p = 0.04) and ZO-1 (Z-score = −2.86, p = 0.04) were found in the placebo group, but no significant changes in the probiotics group. In this pilot study, the use of probiotics did not result in any significant clinical improvement in NAFLD patients. However, at the microenvironment level (i.e., the small intestinal mucosa), probiotics seemed to be able to stabilize the mucosal immune function and to protect NAFLD patients against increased intestinal permeability. Therefore, probiotics might have a complementary role in treating NAFLD. Further studies with larger sample sizes, a longer duration, and different probiotic strains are needed to evaluate the real benefit of probiotics in NAFLD.

Obesity-mediated inflammation represents a key connection between the intake of foods with high inflammatory potential and colorectal cancer (CRC) risk. We aimed to explore the association between energy-adjusted dietary inflammatory index (E-DII) in relation to CRC risk in both obese and non-obese subjects. This study included 99 histopathologically confirmed CRC cases, 73 colonic polyps cases, and 141 healthy controls from tertiary medical centres in both urban and suburban areas in Peninsular Malaysia. The subjects were categorised into body mass index (BMI) < 25 kg/m2 and BMI ≥ 25 kg/m2 groups. E-DII scores were computed based on dietary intake assessed using a validated food frequency questionnaire (FFQ). Logistic regression models were used to estimate odds ratios (ORs) and 95% confidence intervals (CIs), adjusted for potential cofounders. The mean dietary energy intake and mean BMI values of the subjects tended to increase as the E-DII scores increased (p for trend < 0.001). E-DII was significantly related to CRC risk only in obese subjects (OR = 1.45; 95% CI = 1.30–1.77; p < 0.001 for trend). Stratified analyses of risk factors showed significant associations between E-DII and CRC risk by age group (p for interaction = 0.030), smoking status (p for interaction = 0.043), and anthropometric indices for both males and females (p for interaction < 0.001) in the most pro-inflammatory E-DII quartile vs. the lowest E-DII quartile. Overall, pro-inflammatory diets were associated with an increased incidence of CRC in the Malaysian population, particularly in obese subjects.

BackgroundHeritable and environmental factors may contribute to differences in colorectal cancer (CRC) incidence across populations. This study aimed to identify the racial differences in nutritional intake and their association with the risk of CRC in a multi-ethnic population in Malaysia.MethodsOne hundred fifty subjects were recruited from UKM medical center [n =66 (Malay); n =45 (Chinese); n =39 (Indian)]. Dietary intake was assessed using a modified version of a previously validated 142-item food frequency questionnaire (FFQ) that was adapted to reflect the regional food intake commonly consumed by Malaysians. Logistic regression was used to estimate odds ratios (OR) and 95% confidence intervals (CI).ResultsChinese CRC patients were slightly older than those in the Malay and Indian race groups. Compared to Indian, Malay and Chinese were more likely to have a family history of colon cancer (P <0.05). The difference between the three racial groups was not significant for sex, educational level, employment status, body mass index, and smoking status, however, the majority of Chinese CRC were more likely to be lean and were often never smoked. In comparison to Chinese and Indian CRC patients, Malay CRC patients reported a significantly higher intake of fat, calcium, sweetened beverages, and condiments compared to Chinese and Indian (P <0.05). Chinese CRC patients had much greater intakes of carbohydrates, dietary fiber, legumes, and fruits compared to Malay and Indian, P <0.05. Meanwhile, Indian consumed a significantly higher intake of folate, sodium, and vitamin E than the other racial groups, P <0.05. High fiber intake showed an inverse association with CRC [OR, 0.34; 95% CI (0.17–0.67)], P <0.05. Also, a high intake of calcium, folate, and vitamin E showed protective effects against CRC risk for the third tertile of intake. There was a significant pattern of increased risk of CRC with the intake of sweetened beverages [OR, 2.01; 95% CI (1.56–2.86)], P<0.05.ConclusionsOur findings indicate that associations of nutritional intake with CRC risk differ between races, emphasizing the need of examining diet-cancer relationships in racially diverse populations.

Background Studies on the relationship between diet and colorectal cancer (CRC) risk using single food or nutrient approach are widely conducted as opposed to dietary pattern approach. Therefore, this study aimed to determine the major dietary patterns and their association with CRC risk among Malaysians. Methods Patients aged between 18 and 80 years old from two teaching hospitals in Peninsular Malaysia were recruited through purposive sampling. Socio-demographic information and anthropometry data were assessed before the colonoscopy procedure, and dietary intake was also recorded using a validated semi-quantitative food frequency questionnaire (FFQ). Cases were those patients having histopathologically proven CRC, while controls were those without. Results Four major dietary patterns were identified: the allergenic diet, plant-based diet, processed diet, and energy-dense diet pattern. After adjusting for potential covariates, the processed diet pattern was consistently associated with CRC (OR = 3.45; 95% CI = 1.25–9.52; P  = 0.017) while the plant-based diet, energy-dense diet, and allergenic diet were not associated with CRC risk. Conclusions The processed diet pattern attributed to a diet high in confectionaries and fast foods was associated with an increased risk of CRC in the Malaysian population. In order to give prevention measures through lifestyle change, more research could be done on the effect of food patterns on faecal microbiota associated with CRC.