State Key Laboratory of Component-Based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Tianjin 301617, China.
Haihe Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Tianjin 301617, China.
Molecules. 2022 Dec 19;27(24):9049. doi: 10.3390/molecules27249049.
The flower bud of (PNF) consumed as a tonic shows potential in the prevention and treatment of cardiovascular diseases. To identify the contained multi-components and, in particular, to clarify which components can be absorbed and what metabolites are transformed, unveiling the effective substances of PNF is of vital significance. A unique ultrahigh-performance liquid chromatography/ion mobility quadrupole time-of-flight mass spectrometry (UHPLC/IM-QTOF-MS) profiling approach and efficient data processing by the UNIFI bioinformatics platform were employed to comprehensively identify the multi-components of PNF and the related metabolites in the plasma of rats after oral administration (at a dose of 3.6 g/kg). Two MS data acquisition modes operating in the negative electrospray ionization mode, involving high-definition MS (HDMS) and data-dependent acquisition (DDA), were utilized aimed to extend the coverage and simultaneously ensure the quality of the MS spectra. As a result, 219 components from PNF were identified or tentatively characterized, and 40 thereof could be absorbed. Moreover, 11 metabolites were characterized from the rat plasma. The metabolic pathways mainly included the phase I (deglycosylation and oxidation). To the best of our knowledge, this is the first report that systematically studies the in vivo metabolites of PNF, which can assist in better understanding its tonifying effects and benefit its further development.
（PNF）花蕾作为滋补品食用，具有预防和治疗心血管疾病的潜力。为了鉴定其中的多组分，特别是要阐明哪些成分可以被吸收，以及哪些代谢物发生了转化，揭示 PNF 的有效物质至关重要。采用独特的超高效液相色谱/离子淌度四级杆飞行时间质谱（UHPLC/IM-QTOF-MS）分析方法和 UNIFI 生物信息学平台进行高效数据处理，全面鉴定了大鼠口服（剂量为 3.6 g/kg）后 PNF 及其相关代谢物在血浆中的多组分。两种负离子电喷雾电离模式（ESI）下的 MS 数据采集模式，包括高分辨 MS（HDMS）和数据依赖性采集（DDA），用于扩展覆盖范围，同时确保 MS 谱的质量。结果，从 PNF 中鉴定或初步鉴定了 219 个成分，其中 40 个可被吸收。此外，从大鼠血浆中鉴定出 11 个代谢物。代谢途径主要包括 I 相（去糖基化和氧化）。据我们所知，这是首次系统研究 PNF 体内代谢物的报道，这有助于更好地理解其滋补作用，并有利于其进一步发展。
