Associations of Coffee Consumption with the Circulating Level of Alanine Aminotransferase and Aspartate Aminotransferase. A Meta-Analysis of Observational Studies

The association between dietary diabetic risk reduction score with anthropometric and body composition variables in overweight and obese women: a cross-sectional study

Dietary diabetes risk reduction score (DDRRs) is inversely associated with a lower risk of type 2 diabetes. Given the importance of the association between body fat and insulin resistance and the effect of diet on these parameters, this study aimed to investigate the association between DDRRS and body composition parameters, including the visceral adiposity index (VAI), lipid accumulation product (LAP), and skeletal muscle mass (SMM). This study was conducted on 291 overweight and obese women aged 18-48 years old recruited from 20 Tehran Health Centers in 2018. The anthropometric indices, biochemical parameters, and body composition were measured. A semi-quantitative food frequency questionnaire (FFQ) was used to calculate DDRRs. Linear regression analysis was used to examine the association between DDRRs and body composition indicators. The mean (SD) age of participants was 36.67 (9.10) years. After adjustment for potential confounders, VAI (β = 0.27, 95% CI = - 0.73, 1.27, P_trend = 0.052), LAP (β = 8.14, 95% CI = - 10.54, 26.82, P_trend = 0.069), TF (β = - 1.41, 95% CI = 11.45, 17.30, P_trend = 0.027), trunk fat percent (TF%) (β = - 21.55, 95% CI = - 44.51, 1.61, P_trend = 0.074), body fat mass (BFM) (β = - 3.26, 95% CI = - 6.08, - 0.44, P_trend = 0.026), visceral fat area (VFA) (β = - 45.75, 95% CI = - 86.10, - 5.41, P_trend = 0.026), waist-to-hip ratio (WHtR) (β = - 0.014, 95% CI = - 0.031, 0.004, P_trend = 0.066), visceral fat level (VFL) (β = - 0.38, 95% CI = - 5.89, 5.12, P_trend = 0.064), fat mass index (FMI) (β = - 1.15, 95% CI = - 2.28, - 0.02, P_trend = 0.048) decreased significantly over tertiles of DDRRs, and also there was no significant association between SMM and DDRRs tertiles (β = - 0.57, 95% CI = - 1.69, 0.53, P_trend = 0.322). The findings of this study demonstrated that participants with higher adherence to the DDRRs had lower VAI (β = 0.78 vs 0.27) and LAP (β = 20.73 vs 8.14). However, there was no significant association between DDRRs and VAI, LAP and SMM, which are mentioned as the primary outcomes. Future studies with larger sample of both genders are needed to investigate our findings.

Caffeine citrate effects on gastrointestinal permeability, bacterial translocation and biochemical parameters in newborn rats after long-term oral administration

BACKGROUND: Caffeine is a potent central and respiratory acting agent used in neonatology to treat apnea in premature newborns. OBJECTIVE: This study investigates the effects of caffeine orally administered to newborn rats on gastrointestinal permeability, bacterial translocation and different biochemical parameters. METHODS: Newborn rats were divided into different groups (N = 06). The treated newborn rats were orally administered with standard caffeine doses (12 mg/kg per day), and the control groups received a placebo. The animals were weighed daily until sacrifice. Blood samples, mesenteric lymph nodes (MLN) and organs were aseptically collected. Furthermore, different biochemical (D-Lactate) and oxidative stress biomarkers (MDA, CAT, SOD and GSH) levels were examined. Microbiological analyses were performed to assess microbiota alterations and bacterial translocation. RESULTS: Preliminary results showed that caffeine administration decreased the level of bacterial translocation over time. The treatment reduced plasma D-lactate levels (p <  0.05). Additionally, caffeine induced a disturbance in the concentrations of biochemical parameters and oxidative stress biomarkers. Indeed, liver enzymes (AST and ALT) were significantly (p <  0.05) risen after caffeine treatment. Glutathione (GSH) levels were significantly higher in caffeine treated groups (75.12±0.32; 51.98±1.12 U/mg; p <  0.05) comparing to control ones (40.82±0.25; 42.91±0.27 U/mg; p <  0.05) in the ileum and the colon, respectively. CONCLUSIONS: Thus, besides improving gastrointestinal permeability, our data show that caffeine has beneficial effects on the intestinal antioxidant system.

Effects of Coffee on the Gastro-Intestinal Tract: A Narrative Review and Literature Update

The objective of the present research was to review the state of the art on the consequences of drinking coffee at the different levels of the gastrointestinal tract. At some steps of the digestive process, the effects of coffee consumption seem rather clear. This is the case for the stimulation of gastric acid secretion, the stimulation of biliary and pancreatic secretion, the reduction of gallstone risk, the stimulation of colic motility, and changes in the composition of gut microbiota. Other aspects are still controversial, such as the possibility for coffee to affect gastro-esophageal reflux, peptic ulcers, and intestinal inflammatory diseases. This review also includes a brief summary on the lack of association between coffee consumption and cancer of the different digestive organs, and points to the powerful protective effect of coffee against the risk of hepatocellular carcinoma. This review reports the available evidence on different topics and identifies the areas that would most benefit from additional studies.

All coffee types decrease the risk of adverse clinical outcomes in chronic liver disease: a UK Biobank study

BACKGROUND

Chronic liver disease (CLD) is a growing cause of morbidity and mortality worldwide, particularly in low to middle-income countries with high disease burden and limited treatment availability. Coffee consumption has been linked with lower rates of CLD, but little is known about the effects of different coffee types, which vary in chemical composition. This study aimed to investigate associations of coffee consumption, including decaffeinated, instant and ground coffee, with chronic liver disease outcomes.

METHODS

A total of 494,585 UK Biobank participants with known coffee consumption and electronic linkage to hospital, death and cancer records were included in this study. Cox regression was used to estimate hazard ratios (HR) of incident CLD, incident CLD or steatosis, incident hepatocellular carcinoma (HCC) and death from CLD according to coffee consumption of any type as well as for decaffeinated, instant and ground coffee individually.

RESULTS

Among 384,818 coffee drinkers and 109,767 non-coffee drinkers, there were 3600 cases of CLD, 5439 cases of CLD or steatosis, 184 cases of HCC and 301 deaths from CLD during a median follow-up of 10.7 years. Compared to non-coffee drinkers, coffee drinkers had lower adjusted HRs of CLD (HR 0.79, 95% CI 0.72-0.86), CLD or steatosis (HR 0.80, 95% CI 0.75-0.86), death from CLD (HR 0.51, 95% CI 0.39-0.67) and HCC (HR 0.80, 95% CI 0.54-1.19). The associations for decaffeinated, instant and ground coffee individually were similar to all types combined.

CONCLUSION

The finding that all types of coffee are protective against CLD is significant given the increasing incidence of CLD worldwide and the potential of coffee as an intervention to prevent CLD onset or progression.