Research Appraisals
Evidence-based critical appraisals of the latest medical research, systematically evaluated using Oxford CEBM methodology.
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Journal of ethnopharmacology
Long Gu (Os Draconis): Textual research, modern scientific evaluation, and quality control challenges.
ETHNOPHARMACOLOGICAL RELEVANCE: Long Gu (Os Draconis), a mineral medicine with over 2000 years of use in traditional Chinese medicine, is facing a critical juncture. Its identity has been clarified scientifically-from a mythologized "dragon bone" to a fossilized mammalian bioapatite-yet its sustainable clinical application is threatened by resource depletion, widespread domestic and international adulteration, and the lack of modern quality standards. AIM OF THE STUDY: This review aims to systematically analyze the evolution of Long Gu through historical materia medica, define its authentic characteristics using modern science, diagnose the root causes of its current market and regulatory crisis, and propose a robust, multi-dimensional framework for quality evaluation and sustainable sourcing. MATERIALS AND METHODS: A systematic review of Chinese materia medica literature from the Pre-Qin to Qing Dynasties was conducted. Historical textual research was integrated with evidence from modern mineralogy, paleontology, geochemistry, and pharmacology to validate traditional knowledge and establish scientific identification criteria. RESULTS: The understanding of Long Gu evolved from mythological origins to a scientific conclusion in the Ming Dynasty, with Li Shizhen correctly identifying it as fossilized ancient mammalian bones. Modern research confirms authentic "Wuhua Long Gu" from the Shanxi-Shaanxi region is primarily carbonated hydroxyapatite, characterized by high porosity (>35%), significant hygroscopicity, and a unique trace element profile (Zn, Sr). These properties underpin its advertised therapeutic effects. However, the market is now saturated with dangerous adulterants, including fluoride-rich dinosaur fossils and processed modern bones, due to resource exhaustion and inadequate pharmacopoeial standards focused solely on calcium content. CONCLUSION: The future of Long Gu depends on transcending outdated quality controls. Ensuring its efficacy and safety necessitates a paradigm shift to a comprehensive standard system that combines paleontological and geochronological origin verification, quantitative microstructural analysis, chemical fingerprinting of key components, and strict safety monitoring. Complementary research into biomimetic synthesis and accelerated mineralization is urgently needed to develop sustainable alternatives for this invaluable yet endangered medicinal resource.
12 May 2026
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Trends and multidisciplinary research of torch ginger [Etlingera elatior (Jack) R.M.Sm.]: A systematic review.
ETHNOPHARMACOLOGICAL RELEVANCE: Etlingera elatior (Jack) R.M.Sm. (torch ginger) is a tropical plant traditionally used as a cut flower, culinary ingredient, and medicinal resource across Southeast Asia and other regions. However, integrated research on its multidisciplinary utilization remains limited. AIM OF THE STUDY: This study aims to provide a comprehensive systematic review of scientific publications on torch ginger, including analyses of contributing countries, institutions, plant parts, chemical constituents, and research fields. MATERIALS AND METHODS: Publications up to 2024 were retrieved from Scopus and screened using predefined exclusion criteria based on PRISMA principles. The data were analyzed to determine publication trends and bibliometric distributions. Phytochemical and pharmacological data were also extracted. RESULTS: Research on torch ginger began in 1997 and now involves fifteen contributing countries, with Indonesia, Malaysia, and Brazil as major contributors. Studies span fourteen research fields, with pharmacology and phytochemistry as dominant areas. The literature reports eighty-five major bioactive compounds. Extractives from most plant parts contain n-hexadecanoic acid, and essential oils from all parts contain dodecanal and 1-dodecanol. Most research focuses on flowers because their bioactive compounds show wide pharmacological potential, including antioxidant, anti-inflammatory, anti-aging, anti-allergic, anti-hyperuricemic, antidiabetic, anti-obesity, anticancer, antimicrobial, and anthelmintic activities. However, extracts from stems, rhizomes, and fruits demonstrate pharmacological potentials that exceed those of flowers and leaves. CONCLUSIONS: Torch ginger demonstrates remarkable pharmacological potential. Its ease of cultivation and versatile applications support its suitability for large-scale development. As a multifunctional industrial crop, it holds strong promise for zero-waste bioeconomic utilization. Further research must investigate plant parts other than the flower.
6 Apr 2026
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