Mao Jian Green Tea flavonoids (MJGT_F) contain luteolin, luteolin-7-O-glucoside, eriodictyol, and eriodictyol-7-O-glucoside, among which the first three components have hypoglycemic effects; however, the overall hypoglycemic potential of MJGT_F remains unclear. This study demonstrated that MJGT_F inhibited α-glucosidase in vitro and improved metabolic parameters in a dose-dependent manner in T2DM (type 2 diabetes mellitus) rats (reducing blood glucose, triglyceride, total cholesterol, low-density lipoprotein, insulin, and the homeostatic model assessment of insulin resistance; increasing high-density lipoprotein, insulin sensitivity index, and glucagon-like peptide-1). High-dose MJGT_F (MJGT_F_H) showed optimal efficacy. Mechanistically, MJGT_F_H activated the AMPK pathway, evidenced by a significant increase in the p-AMPK/AMPK ratio and downregulation of hepatic gluconeogenic enzymes G6Pase and PEPCK. These coordinated effects collectively suggest enhanced hepatic glucose utilization and suppression of glucose overproduction. MJGT_F_H also modulated gut microbiota by enriching beneficial taxa (e.g., Akkermansia muciniphila, 11.17-fold vs. metformin) and reducing pathogens like Enterobacteriaceae. These findings highlight MJGT_F’s dual regulatory roles in glucose metabolism and microbiota, supporting its potential for diabetes management.

This study investigates the protective effects and underlying mechanisms of Mao Jian Black tea ethanol extract (MJBT_EE) on a mouse model of acute alcohol-induced liver injury (ALI). The animal model was established using the NIAAA method, and C57BL/6 mice were divided into the following groups: negative control group (NC), model control group (MG), silibinin positive control group (SL, 54 mg/kg), and MJBT_EE high- and low-dose groups (40 mg/mL, 20 mg/mL). The results showed that, compared to the MG, MJBT_EE significantly reduced serum levels of ALT, AST, TC, TG, LDL-C, TBIL, ALP and inflammatory cytokines IL-6, TNF-α, and IL-1β (p < 0.01), while upregulating HDL-C (p < 0.01). It also enhanced the activity of hepatic antioxidant enzymes SOD and GSH (p < 0.01) and reduced MDA content (p < 0.01). Further histopathological examination of liver tissue revealed that MJBT_EE_H markedly alleviated hepatocellular hydropic degeneration, swelling, and steatosis. The mechanism of action of MJBT_EE_H primarily involved activation of the PI3K/Akt pathway and suppression of excessive p-NF-κB activation. These findings indicate that Maojian black tea ethanol extract exerts significant protective effects against alcohol-induced liver injury, potentially through improving lipid metabolism, reducing oxidative stress and inflammatory responses, and modulating the PI3K/Akt/NF-κB signaling pathway.

The Short Internodes-Related Sequence (SRS) family, a class of plant-specific transcription factors crucial for diverse biological processes, was systematically investigated in foxtail millet using pan-genome data from 110 core germplasm resources as well as two high-quality genomes (xm and Yu1). We identified SRS members and analyzed their intra-species distribution patterns, including copy number variation (CNV) and interchromosomal translocations. A novel standardized nomenclature (Accession_SiSRSN[.n]_xDy or xTy) was proposed to unify gene family nomenclature, enabling the direct visualization of member number variation across germplasms and the identification of core/variable members while highlighting chromosomal translocations. Focusing on the two high-quality genomes, both harboring six core SRS members, we performed whole-genome collinearity analysis with Arabidopsis, rice, maize, soybean, and green foxtail. Ka/Ks analysis of collinear gene pairs revealed purifying selection acting on SiSRS genes. Promoter analysis identified abundant stress-responsive cis-elements. Among core members, the xm_SiSRS5 gene exhibited the highest expression during vegetative growth but showed significant downregulation under drought and salt stress, suggesting its role as a key negative regulator in abiotic stress responses. This study demonstrates the utility of pan-genomics in resolving gene family dynamics and establishes SiSRS5 as a critical target for stress tolerance engineering in foxtail millet.