Kunjing Liu

Gastric cancer is one of the malignancies with the highest incidence and mortality worldwide. Helicobacter pylori (H. pylori) infection is the primary driving factor in its development. The progression of gastric mucosal malignancy follows the Correa cascade model: “chronic non-atrophic gastritis → chronic atrophic gastritis (CAG) → intestinal metaplasia (IM) → dysplasia (Dys) → gastric cancer.” Currently, clinical management faces major challenges, including increasing antibiotic resistance in H. pylori, limited pharmacological options for gastric precancerous lesions, and treatment resistance and toxicity in established gastric cancer. This review synthesizes current evidence on BBR, COP, EPI, PAL, and JAT and organizes their reported actions into a three-tier intervention framework. At the first tier, etiologic and inflammatory interception, individual alkaloids suppress H. pylori persistence through direct antibacterial injury, urease inhibition, and modulation of bacterial virulence and antibiotic susceptibility, while attenuating infection-driven inflammatory and immune responses. At the second tier, modulation of precancerous mucosal progression, preclinical studies indicate that these compounds can ameliorate gastric glandular injury and may attenuate biological processes associated with progression toward intestinal metaplasia and dysplasia. At the third tier, antitumor and adjunctive intervention in established gastric cancer, alkaloids inhibit proliferation, induce cell-cycle arrest and apoptosis, suppress invasion and metastasis, and regulate non-coding RNA and epigenetic networks; BBR-centered preclinical studies further suggest potential chemosensitizing and supportive effects. This review integrates the five alkaloids BBR, COP, EPI, PAL, and JAT and systematically elucidates their mechanisms of action across the pathological continuum from H. pylori infection and chronic inflammation to precancerous lesions and ultimately gastric cancer. It establishes a stage-oriented, compound-specific analytical framework to clarify the pharmacological positioning of these compounds, identify priorities requiring further validation, and guide future mechanistic and translational research.

Insomnia is associated with disrupted sleep architecture, hippocampal pathological alterations, neurotransmitter imbalance, and neuroinflammatory responses. This study evaluated the effects of the Prunella vulgaris compound (PVC) on sleep architecture and hippocampal alterations in p-chlorophenylalanine (PCPA)-induced insomnia model mice and examined their association with NLRP3-related pyroptotic signaling. PVC was characterized using UPLC-Q-Exactive Orbitrap MS and targeted HPLC quantification. PCPA-induced insomnia models were established in ICR and C57BL/6N mice for pharmacodynamic and molecular assessments and EEG/EMG recording, respectively. Sleep outcomes were assessed using the pentobarbital-induced sleep test and EEG/EMG; hippocampal histomorphology, neurotransmitters, and inflammasome- and pyroptosis-related markers were evaluated using histological, biochemical, RT-qPCR, and Western blot analyses. UPLC-MS tentatively characterized 198 constituents, and salviaflaside, rosmarinic acid, and linarin were quantified by HPLC. PVC shortened sleep latency, prolonged sleep duration, reduced wakefulness, increased NREM and REM sleep, and improved sleep continuity. It also attenuated hippocampal histomorphological alterations; modulated 5-HT, GABA, glutamate, and dopamine levels; and reduced NLRP3 inflammasome- and pyroptosis-related markers together with IL-1β and IL-18. PVC improved insomnia-like phenotypes and attenuated hippocampal pathological alterations in PCPA-induced insomnia model mice. These effects were associated with improved sleep architecture and neurotransmitter homeostasis and with reduced NLRP3/caspase-1/GSDMD-related signaling.