Drug discovery is a complex and resource-intensive process, with lead identification representing a major bottleneck due to high attrition rates. Natural products have long served as a valuable source of structurally diverse and biologically active compounds, offering advantages such as evolutionary optimization, target specificity, and unique chemical diversity. This review provides a comprehensive and mechanistic overview of natural products as lead compounds, emphasizing their chemical characteristics, biological relevance, sources, mechanisms of action, and integration into modern drug discovery pipelines. A narrative review was conducted using major scientific databases (PubMed, Scopus, Web of Science, and Google Scholar), covering literature from 2000 to 2026. Relevant studies were selected based on scientific rigor and contribution to key themes, including natural product diversity, discovery strategies, and technological advancements. Natural products exhibit superior structural complexity and occupy unique chemical space compared to synthetic compounds, enabling effective interaction with diverse biological targets and supporting polypharmacological activity. Key sources include plants, microorganisms, and marine organisms, which have yielded numerous clinically important drugs. Advances in analytical techniques, genome mining, metabolomics, synthetic biology, and artificial intelligence have significantly improved discovery and optimization processes. Despite challenges related to complexity and scalability, natural products remain indispensable in drug discovery, with emerging technologies enhancing their potential for addressing unmet medical needs.
S. Papadopoulou, Efthymios Poulios, Fotios Tsopelas et al.· Scientia Pharmaceutica· 2 citations
Background/Objectives: Perceived stress and sleep quality are increasingly recognized as important determinants of emotional eating (EE), particularly among university students who are frequently exposed to academic pressures, psychosocial challenges, and lifestyle disruptions. Both stress and sleep quality are closely interconnected, with elevated stress contributing to sleep disturbances and poor sleep further exacerbating psychological distress. The present study aims to simultaneously examine the independent contributions of perceived stress and sleep quality to EE while accounting for other relevant sociodemographic, lifestyle, and anthropometric factors. Methods: This cross-sectional study was conducted among 1297 university students recruited from 10 geographical regions of Greece. Data on sociodemographic characteristics, academic profile, lifestyle behaviors, and anthropometric parameters were collected using standardized and validated assessment instruments. Perceived stress was measured using the Perceived Stress Scale (PSS), while sleep quality was evaluated with the Pittsburgh Sleep Quality Index (PSQI). Emotional eating was assessed using the Emotional Eating subscale of the Three-Factor Eating Questionnaire–Revised 18 (TFEQ-R18), and participants were subsequently classified into tertiles corresponding to low, moderate, and high levels of emotional eating. Results: Perceived stress was independently associated with EE in the multivariable analysis. Compared with students reporting low levels of stress, those experiencing high perceived stress exhibited almost threefold greater odds of being classified in higher emotional eating categories (OR = 2.86; p = 0.0001). Likewise, participants with moderate perceived stress were approximately twice as likely to demonstrate elevated emotional eating levels relative to their low-stress counterparts (OR = 2.01; p = 0.0001). Sleep quality was also independently associated with EE after adjustment for potential confounding factors. Specifically, students characterized by inadequate sleep quality had more than three times the likelihood of belonging to higher emotional eating categories compared with those reporting satisfactory sleep quality (OR = 3.08; p = 0.0001). The multivariable model demonstrated good fit (Likelihood Ratio Test, p < 0.001), and the proportional odds assumption was satisfied (p = 0.46). Conclusions: These findings underscore the important role of psychological distress and sleep health in EE behavior, independent of other sociodemographic, academic, lifestyle, and anthropometric factors. Given the observed associations, interventions incorporating stress-management and sleep-improvement components may represent promising approaches for addressing emotional eating among university students; however, longitudinal and intervention studies are needed to establish causality. Future longitudinal and intervention studies are needed to establish causality among perceived stress, sleep quality, and emotional eating.
Olga Alexatou, S. Papadopoulou, Exakousti-Petroula Angelakou et al.· Nutrients· 0 citations
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