LDL cholesterol-lowering effect of Daeshiho-tang in patients with dyslipidemia: A pilot randomized, double-blind, placebo-controlled trial

Dyslipidemia, a major risk factor for atherosclerotic cardiovascular disease, can be prevented by lowering low-density lipoprotein cholesterol (LDL-C) levels. The lipid improvement effects of Daeshiho-tang (DSHT), a herbal formula, have been proven through various preclinical studies based on anti-obesity and anti-inflammatory properties, however, clinical trials were few. This preliminary study aimed to assess the lipid-lowering effect of DSHT in patients with dyslipidemia and examine its safety profile. The study was a randomized, double-blind, placebo-controlled trial. The trial included 60 patients with untreated dyslipidemia: total cholesterol (TC) > 200 mg/dL, triglyceride (TG) > 150 mg/dL, LDL-C >130 mg/dL, or high-density lipoprotein cholesterol (HDL-C) <40 mg/dL. Participants (mean age, 44.7 ± 13.7 years) consumed DSHT extract or an equivalent placebo at a dose of 3 g, thrice a day for 8 weeks. Participants underwent blood tests assessing serum lipid and apolipoprotein (apo) levels, including LDL-C, HDL-C, TC, TG, apoA1, and apoB, at baseline and 4 and 8 weeks. Levels of biochemical safety markers, including AST, ALT, GGT, creatinine, and eGFR, were assessed throughout the study. Between the two groups, significant differences were observed in the changes of LDL-C, TC, and apoB concentrations from baseline to post-intervention. Compared with the placebo group, DSHT-administered participants showed significantly reduced LDL-C by 14.0 ± 4.66 mg/dL (p < 0.01), TC by 13.7 ± 4.73 mg/dL (p < 0.01) and apolipoprotein-B by 7.03 ± 3.23 mg/dL (p < 0.05). No significant changes were observed in the safety biochemical parameters in either group. DSHT treatment for 8 weeks improved LDL-C levels and reduced apoB concentrations without severe adverse events.

Efficacy and Safety of Da-Chai-Hu-Tang in Lipid Profiles in High-Risk, Statin-Treated Patients with Residual HyperTG: A 12-Week, Randomized, Active-Control, Open Clinical Study

Da-Chai-Hu-Tang (DCHT) is a herbal extract that has been shown to reduce serum triglyceride (TG) levels in animal experiments as well as small clinical trials. This study aimed to evaluate the efficacy and safety of DCHT in high-risk, statin-treated patients with residual hypertriglyceridemia (hyperTG). This was a 12-week, randomized, active-controlled, open-label, single-center trial. Of these patients, 42 had high cardiovascular risks whose LDL cholesterol levels were controlled by statin treatment; however, with TG levels of 200 to 500 mg/dL they were randomly assigned 1:1 to the OMEGA3 or DCHT group. The primary endpoint was defined as the percentage change in TG at 12 weeks, and changes in other lipid profiles and endothelial cell function were included as secondary endpoints. Safety analyses were also conducted. In the OMEGA3 group, the average TG level decreased from 294.5 ± 72.0 to 210.0 ± 107.8 mg/dL (p = 0.004), and in the DCHT group, from 288.7 ± 59.1 to 227.5 ± 98.1 mg/dL (p = 0.001). The percentage change in TG was −27.6 ± 33.6 and −22.4 ± 24.1 (p = 0.58), respectively, and there was no significant difference between the two groups. There were no severe adverse events in either group. In high-risk, statin-treated patients with residual hyperTG, the administration of OMEGA3 or DCHT for 12 weeks resulted in a significant reduction in TG, and the effect of DCHT was not inferior to that of OMEGA3.

Da-Chai-Hu Decoction Ameliorates High Fat Diet-Induced Nonalcoholic Fatty Liver Disease Through Remodeling the Gut Microbiota and Modulating the Serum Metabolism

The dysbiosis in gut microbiota could affect host metabolism and contribute to the development of nonalcoholic fatty liver disease (NAFLD). Da-Chai-Hu decoction (DCH) has demonstrated protective effects on NAFLD, however, the exact mechanisms remain unclear. In this study, we established a NAFLD rat model using a high fat diet (HFD) and provided treatment with DCH. The changes in gut microbiota post DCH treatment were then investigated using 16S rRNA sequencing. Additionally, serum untargeted metabolomics were performed to examine the metabolic regulations of DCH on NAFLD. Our results showed that DCH treatment improved the dyslipidemia, insulin resistance (IR) and ameliorated pathological changes in NAFLD model rats. 16S rRNA sequencing and untargeted metabolomics showed significant dysfunction in gut microbiota community and serum metabolites in NAFLD model rats. DCH treatment restored the dysbiosis of gut microbiota and improved the dysfunction in serum metabolism. Correlation analysis indicated that the modulatory effects of DCH on the arachidonic acid (AA), glycine/serine/threonine, and glycerophospholipid metabolic pathways were related to alterations in the abundance of Romboutsia, Bacteroides, Lactobacillus, Akkermansia, Lachnoclostridium and Enterobacteriaceae in the gut microflora. In conclusion, our study revealed the ameliorative effects of DCH on NAFLD and indicated that DCH's function on NAFLD may link to the improvement of the dysbiosis of gut microbiota and the modulation of the AA, glycerophospholipid, and glycine/serine/threonine metabolic pathways.