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ETHNOPHARMACOLOGICAL RELEVANCE: Jinfu'an Decoction (JFAD) is a traditional Chinese decoction used in lung cancer treatment to improve patient quality of life and survival. Previous research has established that JFAD has a significant therapeutic effect on non-small cell lung cancer (NSCLC), although the underlying molecular mechanisms have not been largely underexplored. AIM OF THE STUDY: We used network pharmacology to identify the putative active ingredients of JFAD and conducted experimental studies to determine the potential molecular mechanism of JFAD in NSCLC treatment. MATERIALS AND METHODS: The herbal components in JFAD-containing serum were identified by ultra-high performance liquid chromatography-quadrupole time-of-flight mass spectrometry (UHPLC-QTOF-MS), and targets associated with the anti-lung cancer metastasis effects of JFAD were retrieved from various databases. The Database for Annotation, Visualization and Integrated Discovery (DAVID) was used to perform Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis. Next, the protein-protein interactions network and the "JFAD-Chemical Component-Target-KEGG Pathway" network were constructed. The network pharmacology findings were confirmed by in vitro and in vivo experiments. In vitro experiments were conducted to assess cell viability by CCK8 assay, cell cycle analysis by propidium iodide (PI) assay, and migration and invasion ability of cells by the transwell assay. In vivo experiments were performed to assess the efficacy of JFAD on the tumor by observing the growth of transplanted tumor models in nude mice and evaluated by in vivo bioluminescence imaging. Moreover, we assessed the effect of JFAD on the PI3K/Akt signaling pathway and proteins of Lumican, p120ctn, and specific RhoGTP enzyme family members (RhoA, Rac1, and RhoC) by Western Blot and immunohistochemistry. RESULTS: 32 herbal components were identified in the JFAD-containing serum, which potentially acted on 229 targets related to lung cancer metastasis. Network pharmacology results suggested that JFAD may treat lung cancer metastasis by targeting the PI3K/Akt pathway via regulating multiple core targets. Our experiments showed that JFAD suppressed the proliferation of A549 cells in vitro, induced cell cycle arrest, and reduced the migration and invasion ability of A549 cells. Our in vivo study revealed that JFAD inhibited tumor growth in a nude mouse model. Additionally, we found that JFAD could downregulate the expression of the PI3K/Akt pathway and affect the expression of Lumican, p120ctn, and specific RhoGTPase family members. CONCLUSIONS: In conclusion, through network pharmacology, we have unveiled the underlying mechanisms that link the various components, targets, and pathways influenced by JFAD in the context of lung cancer metastasis. Our experimental results suggest that the oncostatic effects of JFAD may be achieved by upregulating the expression of Lumican/p120ctn and downregulating the levels of specific RhoGTPase family members, which in turn block the PI3K/Akt signaling pathway.
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Carcinoma de Pulmón de Células no Pequeñas , Medicamentos Herbarios Chinos , Neoplasias Pulmonares , Animales , Ratones , Humanos , Carcinoma de Pulmón de Células no Pequeñas/tratamiento farmacológico , Neoplasias Pulmonares/tratamiento farmacológico , Lumican , Catenina delta , Ratones Desnudos , Farmacología en Red , Fosfatidilinositol 3-Quinasas , Proteínas Proto-Oncogénicas c-akt , Calidad de Vida , Medicamentos Herbarios Chinos/farmacología , Medicamentos Herbarios Chinos/uso terapéutico , Simulación del Acoplamiento MolecularRESUMEN
BACKGROUND: KRAS mutation is a common driver of NSCLC, and there is a high proportion of lung cancer patients with KRAS G12C and G12D mutation. KRAS was previously considered an "undruggable" target, but the first KRAS G12C mutation-targeted drug AMG510, entered the market in 2021. However, treatments for G12D mutant tumors remain to be discovered. Salvianolic acid F (SalF), a monomer derived from the traditional Chinese medicine Salvia miltiorrhiza (SM), and KRAS had high binding affinity, especially for KRAS G12D. There is an urgent need to investigate effective and safe novel targeted therapies against KRAS G12D-driven NSCLC. METHODS: To evaluate the anticancer effect of SalF, we used KRAS-overexpressing lung cancer cells in vitro, a subcutaneous transplant tumor model, and KRAS G12D mice model in vivo. Then, the binding effect of SalF and KRAS was investigated using molecular docking, proteolytic assays and protein thermal shift assays. More critically, the PI3K/AKT signaling pathway in the lung was investigated utilizing RT-qPCR and Western Blotting. RESULTS: This is the first study to evaluate the anticancer effect of SalF on KRAS-overexpressing lung cancer cells or KRAS G12D lung tumors in vivo. We demonstrated that SalF inhibits OE-KRAS A549 cell migration, proliferation and promotes apoptosis in vitro. In addition, we used a subcutaneous transplant tumor model to show that SalF suppresses the growth of lung cancer cells in vivo. Interestingly, our group found that SalF was strongly bound to G12D and could decrease the stability and promoted the degradation of the KRAS G12D mutant through molecular docking, proteolytic assays and protein thermal shift assays. Further research demonstrated that in the KrasG12D mice model, after SalF treatment, the number and size of mouse lung tumors were significantly reduced. More importantly, SalF can promote apoptosis by inhibiting downstream PI3K/AKT signaling pathway activation. CONCLUSION: SalF activated apoptosis signaling pathways, suppressed anti-apoptotic genes, and inhibited lung cancer cell growth. These datas suggested that SalF could effectively inhibit the growth of lung tumors with KRAS G12D mutation. SalF may be a novel inhibitor against KRAS G12D, providing a strong theoretical basis for the clinical treatment of lung cancer with KRAS mutations.
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Carcinoma de Pulmón de Células no Pequeñas , Neoplasias Pulmonares , Humanos , Ratones , Animales , Proteínas Proto-Oncogénicas c-akt/metabolismo , Fosfatidilinositol 3-Quinasas/metabolismo , Proteínas Proto-Oncogénicas p21(ras)/genética , Proteínas Proto-Oncogénicas p21(ras)/metabolismo , Simulación del Acoplamiento Molecular , Proliferación Celular , Transducción de Señal , Neoplasias Pulmonares/patología , Carcinoma de Pulmón de Células no Pequeñas/metabolismo , Transformación Celular Neoplásica , Mutación , Línea Celular Tumoral , Pulmón/patologíaRESUMEN
BACKGROUND: Traditional Chinese medicine (TCM) based exercises have been widely used in the prevention and treatment of balance, cardiopulmonary, and other related diseases in older adults. However, there seems to be no consensus on the improvement and comparison of physical performance, balance, and muscle strength in the elderly population. OBJECTIVES: To systematically examine the impact of different TCM-based exercises on physical performance, balance, and muscle strength outcomes in the elderly. METHODS: We searched PubMed, EMBASE, Scopus, and Cochrane Center, CNKI and Wan Fang between their date of inception and March 2021. This meta-analysis was performed using RevMan5.3 software. Only randomized controlled trials (RCT) or controlled clinical trials (CCT) were considered in TCM-based exercises (Tai Chi, Ba Duan Jin, Qigong). The overall mean difference (MD) or standardized mean difference (SMD), and its 95% confidence interval (CI) were calculated. MAIN RESULTS: A total of 27 studies with 2580 older adults met the inclusion criteria. The pooled analysis indicated that Tai Chi could be more effective in Times up and go (TUG) (MD = - 2.62, 95% CI - 4.00 to - 1.24, P = 0.0002), 5 times sit-stand (MD = - 1.89; 95%CI - 3.38 to - 0.40; P = 0.01), and handgrip strength outcomes (SMD = 0.69; 95%CI 0.52-0.86; P < 0.0001) compared to Ba Duan Jin and Qigong. The older adults performing Qigong could have a better benefit in Single-bed balance (SLB) with eyes closed compared to Tai Chi and Ba Duan Jin (MD = 3.42; 95%CI 1.55 to 5.29; P = 0.0003). Tai Chi also had benefits in terms of balance outcomes compared to those in the control group: Berg Balance scale (BBS) (MD = 1.41; 95% CI 0.03-2.85; P = 0.05), Functional reach test (FRT) (MD = 1.57; 95%CI 1.22-1.93; P < 0.0001). The Tai Chi study meta-analysis demonstrated significant effects on lower limb strength: knee extension (SMD = 0.56; 95%CI 0.26-0.86; P = 0.0003), ankle dorsiflexion (SMD = 0.67; 95%CI 0.02-1.31; P = 0.04) compared to the controls. CONCLUSION: This systematic review reveals that TCM-based exercises can effectively improve physical performance outcomes, balance outcomes, and muscle strength in the elderly population. While there is limited evidence on the efficacy of other TCM-based lifestyle interventions, more high-quality clinical trials on this topic are warranted.
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Medicina Tradicional China , Taichi Chuan , Anciano , Ejercicio Físico , Humanos , Fuerza Muscular/fisiología , Rendimiento Físico FuncionalRESUMEN
OBJECTIVE: We conducted this study to evaluate the efficacy and safety of traditional Chinese medicine (TCM) in advanced non-small cell lung cancer (NSCLC) patients who underwent chemotherapy. DESIGN: This was a prospective, open-label, randomized controlled trial. NSCLC patients at stage IIIA, IIIB, or IV were randomly assigned to either TCM plus chemotherapy or chemotherapy alone. The comprehensive TCM treatment consisted of Kang Ai injection, herbal decoction, and Zhenqifuzheng capsules. The primary endpoint was quality of life (QOL) measured by the Functional Assessment of Cancer Therapy-Lung version 4.0. The secondary endpoints were chemotherapy completion rate, tumor response, and adverse events. All assessments were done at baseline, the third week, and the sixth week. RESULTS: Thirty-nine participants were randomly assigned to the treatment group and 36 to the control group. The QOL scores were significantly improved in the treatment group compared with those of the control group in social well-being (cycle 1, Pâ=â.048; cycle 2, Pâ=â.015), emotional well-being (cycle 1, Pâ=â.047; cycle 2, Pâ=â4.29E-05), and functional well-being (cycle 1, Pâ=â.030; cycle 2, Pâ=â.003), while the QOL scores in the above 3 domains declined in the control group (Pâ<â.05). Both groups had a decline in the physical well-being score (cycle 1, Pâ=â.042; cycle 2, Pâ=â.017) and lung cancer symptom score (cycle 1, Pâ=â.001; cycle 2, Pâ=â.001) after 2 courses of intervention. The deterioration in physical well-being and lung cancer symptoms was noticeably smaller in the treatment group (Pâ<â.05). There were significant differences between the 2 groups in social well-being, emotional well-being, functional well-being, lung cancer symptom domain, and the total score (Pâ<â.05). Patients in the treatment group had a significantly lower incidence of platelet reduction than the control group (Pâ=â.028) after 2 cycles of treatment. No significant difference in nonhematological adverse events (AEs) was observed. CONCLUSION: This study illustrated that comprehensive TCM treatment could promote the QOL of NSCLC patients, alleviate symptoms, and reduce the AEs caused by chemotherapy, verifying the synergistic and attenuating effects of TCM in NSCLC patients undergoing chemotherapy. TRIAL REGISTRATION: Chinese Clinical Trial Registry (www.chictr.org.cn): ChiCTR-TRC-13003637.
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Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Carcinoma de Pulmón de Células no Pequeñas/tratamiento farmacológico , Medicamentos Herbarios Chinos/uso terapéutico , Neoplasias Pulmonares/tratamiento farmacológico , Calidad de Vida , Adolescente , Adulto , Anciano , Protocolos de Quimioterapia Combinada Antineoplásica/farmacología , Carcinoma de Pulmón de Células no Pequeñas/sangre , Carcinoma de Pulmón de Células no Pequeñas/complicaciones , Carcinoma de Pulmón de Células no Pequeñas/diagnóstico , Sinergismo Farmacológico , Medicamentos Herbarios Chinos/farmacología , Femenino , Humanos , Incidencia , Neoplasias Pulmonares/sangre , Neoplasias Pulmonares/complicaciones , Neoplasias Pulmonares/diagnóstico , Masculino , Persona de Mediana Edad , Estadificación de Neoplasias , Recuento de Plaquetas , Estudios Prospectivos , Trombocitopenia/inducido químicamente , Trombocitopenia/diagnóstico , Trombocitopenia/epidemiología , Trombocitopenia/prevención & control , Adulto JovenRESUMEN
BACKGROUND: Cholangiocarcinoma refers to an epithelial cell malignancy with poor prognosis. Yinchenhao decoction (YCHD) showed positive effects on cancers, and associations between YCHD and cholangiocarcinoma remain unclear. This study aimed to screen out the effective active components of Yinchenhao decoction (YCHD) using network pharmacology, estimate their potential targets, screen out the pathways, as well as delve into the potential mechanisms on treating cholangiocarcinoma. METHODS: By the traditional Chinese medicine system pharmacology database and analysis platform (TCMSP) as well as literature review, the major active components and their corresponding targets were estimated and screened out. Using the software Cytoscape 3.6.0, a visual network was established using the active components of YCHD and the targets of cholangiocarcinoma. Based on STRING online database, the protein interaction network of vital targets was built and analyzed. With the Database for Annotation, Visualization, and Integrated Discovery (DAVID) server, the gene ontology (GO) biological processes and the Kyoto encyclopedia of genes and genomes (KEGG) signaling pathways of the targets enrichment were performed. The AutoDock Vina was used to perform molecular docking and calculate the binding affinity. The PyMOL software was utilized to visualize the docking results of active compounds and protein targets. In vivo experiment, the IC50 values and apoptosis rate in PI-A cells were detected using CCK-8 kit and Cell Cycle Detection Kit. The predicted targets were verified by the real-time PCR and western blot methods. RESULTS: 32 effective active components with anti-tumor effects of YCHD were sifted in total, covering 209 targets, 96 of which were associated with cancer. Quercetin, kaempferol, beta-sitosterol, isorhamnetin, and stigmasterol were identified as the vital active compounds, and AKT1, IL6, MAPK1, TP53 as well as VEGFA were considered as the major targets. The molecular docking revealed that these active compounds and targets showed good binding interactions. These 96 putative targets exerted therapeutic effects on cancer by regulating signaling pathways (e.g., hepatitis B, the MAPK signaling pathway, the PI3K-Akt signaling pathway, and MicroRNAs in cancer). Our in vivo experimental results confirmed that YCHD showed therapeutic effects on cholangiocarcinoma by decreasing IC50 values, down-regulating apoptosis rate of cholangiocarcinoma cells, and lowering protein expressions. CONCLUSIONS: As predicted by network pharmacology strategy and validated by the experimental results, YCHD exerts anti-tumor effectsthrough multiple components, targets, and pathways, thereby providing novel ideas and clues for the development of preparations and the treatment of cholangiocarcinoma.
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BACKGROUND: Quality evaluation of multi-species resourced herb medicine (MSRHM) is a main problem for quality control of herb medicine. Current quality evaluation methodology lost consideration of species discrepancy. New quality evaluation strategy for MSRHM is in urgent need. Qinjiao, a representative MSRHM, originated from Gentiana macrophylla Pall., Gentiana straminea Maxim., Gentiana crassicaulis Duthie ex Burk. or Gentiana dahurica Fisch., has been used as an important herb medicine over 2000 years for expelling wind-dampness and relieving impediment pain. However, quality evaluation among species has never been revealed. The current work proposes an integrated quality evaluation strategy for MSRHM of Qinjiao, which may promote innovation of quality control of MSRHM. METHODS: In this work, 58 batches of Qinjiao covering 4 species were collected. Genetic comparative analysis based on ITS2 sequence was conducted. Metabolomics analysis based on TOF-MS and NMR spectrum were carried out. Compounds underlying species differences were identified and their discrepancies among species were investigated by ANOVA analysis and multivariate analysis. RESULTS: Four species of Qinjiao can be authenticated by ITS2 sequence comparation. Metabolomics analysis by TOF/MS and NMR revealed chemical discrepancies among species of Qinjiao. Maximum discrepancy was present between Gentiana crassicaulis Duthie ex Burk. and Gentiana dahurica Fisch. Chemical difference among species were tentative explored. For TOF-MS profiling, 28 constituents were tentative identified, 17 of which were further confirmed by standards. For 1H-NMR profiling, signals from 5 compounds were assigned. Contents discrepancies were investigated by ANOVA analysis. It seems that (seco)iridoids like loganic acid, gentiopicroside or swertiamarin were richer in specie of Gentiana crassicaulis Duthie ex Burk., while flavonoid (morroniside) and triterpenoids (roburic aicd, ursolic acid, oleanolic acid, ß-sitosterone) were richer in specie of Gentiana dahurica Fisch. The current research demonstrates that metabolite profiling based on both UPLC/Q-TOF MS and 1H-NMR coupled with ITS2 sequence comparation can be a powerful tool for quality investigation of MSRHM of Qinjiao. CONCLUSIONS: A comprehensive quality evaluation strategy for MSRHM was proposed by integrating UPLC-Q-TOF-MS, NMR based metabolic analysis and ITS2 sequence genetic comparation. The proposed quality evaluation strategy shall promote innovation of quality control of traditional Chinese medicine.
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OBJECTIVE: To systematically review and evaluate the effectiveness of Chinese herbal medicine (CHM) therapy for epidermal growth factor receptor inhibitor (EGFRI)-induced skin rash in patients with malignancy. METHODS: The electronic databases of Medline, PubMed, EMBASE, the Cochrane Library, China National Knowledge Infrastructure, VIP Chinese Sci-tech Journal, Wan Fang, and Chinese Biomedicine were searched from their inception to 31â¯st September 2018. Randomized controlled trials (RCTs) investigating the effectiveness of CHM in improving EGFRI-induced skin rash were analyzed by Review Manager 5.3. RESULTS: Twenty-three eligible RCTs with 1392 participants were identified and divided into four subgroups according to different treatment rules of Traditional Chinese Medicine (TCM) and different controls. CHM (dispel wind, clear heat, and eliminate dampness), the representative formula Xiao Feng San, is more effective than western medicine in improving and curing skin rash(RR,95%CI: 1.46,1.26-1.70 and 1.65,1.24-2.20); CHM (nourish yin, clear heat, and remove toxin for eliminating blood stasis), the representative formula Yang Fei Xiao Zhen Tang, is more effective than western medicine in improving skin rash(RR,95%CI: 1.45,1.10-1.92). CHM (clear lung and purge heat, cool blood, and remove toxic substance) is more effective in improving and curing skin rash, compared with the western medicine group (RR,95%CI: 1.42,1.21-1.67 and 2.43,1.23-4.81) or the blank control group(RR,95%CI:2.37,1.21-4.63 and 2.98,1.20-7.41). The side effects of CHM are all mild and tolerable. Sensitivity analysis indicates that the results of the study are stable. The asymmetry funnel plots described that publication bias of this research may exist. CONCLUSION: The limited evidence suggests that CHM exhibits clinical effectiveness and good safety on the treatment of EGFRI-induced skin rash. Large-sample RCTs are required to further determine the effectiveness of CHM.
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Antineoplásicos/efectos adversos , Medicamentos Herbarios Chinos/uso terapéutico , Receptores ErbB/antagonistas & inhibidores , Exantema/inducido químicamente , Exantema/tratamiento farmacológico , Neoplasias/tratamiento farmacológico , Humanos , Medicina Tradicional China , Ensayos Clínicos Controlados Aleatorios como AsuntoRESUMEN
PURPOSE: Polyphyllin VI, a main active saponin isolated from traditional medicinal plant Paris polyphylla, has exhibited antitumor activities in several cancer cell lines. In the present study, we investigated the antitumor effect of Polyphyllin VI against human osteosarcoma cells (U2OS) and the underlying molecular mechanisms. METHODS: The U2OS cell lines were used to determine the antiproliferative effect of Polyphyllin VI by CCK8 assay. Cell cycle was analyzed by flow cytometry. The Polyphyllin VI-induced apoptosis was determined by Annexin V-APC/7-AAD apoptosis detection kit and JC-1 staining. Meanwhile, the autophagy was determined by acridine orange staining. The apoptosis and autophagy-related proteins were monitored by Western blot assay. Subsequently, intracellular hydrogen peroxide (H2O2) and the activation of ROS/JNK pathway were detected. RESULTS: Polyphyllin VI could potently inhibit cell proliferation by causing G2/M phase arrest. Polyphyllin VI induced mitochondria-mediated apoptosis with the upregulation of proapoptotic proteins Bax and poly ADP-ribose polymerase, and downregulation of antiapoptotic protein Bcl-2 in U2OS cells. Concomitantly, Polyphyllin VI provoked autophagy with the upregulation of critical Atg proteins and accumulation of LC3B-II. Intracellular H2O2 production was triggered upon exposure to Polyphyllin VI, which could be blocked by ROS scavenger. Polyphyllin VI dramatically promoted JNK phosphorylation, whereas it decreased the levels of phospho-p38 and ERK. CONCLUSION: Our results reveal that Polyphyllin VI may effectively induce apoptosis and autophagy to suppress cell growth via ROS/JNK activation in U2OS cells, suggesting that Polyphyllin VI is a potential drug candidate for the treatment of osteosarcomas.
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Antineoplásicos Fitogénicos/farmacología , Neoplasias Óseas/tratamiento farmacológico , Osteosarcoma/tratamiento farmacológico , Apoptosis/efectos de los fármacos , Autofagia/efectos de los fármacos , Neoplasias Óseas/patología , Línea Celular Tumoral , Humanos , Peróxido de Hidrógeno/metabolismo , Sistema de Señalización de MAP Quinasas/efectos de los fármacos , Mitocondrias/metabolismo , Osteosarcoma/patología , Especies Reactivas de Oxígeno/metabolismoRESUMEN
Gentiana macrophylla Radix, commonly known as Qin-Jiao (QJ), was recorded alone to treat jaundice in Compendium of Materia Medica and has been frequently prescribed for treatment of liver disease in China. However, the underlying mechanism remains unknown. In the present work, QJ of 1,2 g/kg or silybin of 40 mg/kg (positive control) was orally given to rats for 7 days to verify the protective effect on acute liver damage induced by tetrachloride (CCl4). Together with serum biochemistry and histopathological examination, 1H-NMR based metabolomics work was carried out to investigate the efficacy. It turned out that QJ of 2 g/kg exerted comparable protective effect with positive control and partially recovered disturbed metabolism by CCl4. Multivariate analysis was conducted and metabolites altered significantly among groups were assigned and discussed, including betaine, glucose, lactate, creatine, and LDL/VLDL. Metabolic regulations involved in QJ or silybin treatment were as follows: tricarboxylic acid (TCA) cycle, synthesis of LDL/VLDL, and gluconeogenesis were enhanced, while betaine metabolism, glycolysis, creatine metabolism, synthesis of ketone bodies, amino acids metabolism, and ß-oxidation of fatty acids were suppressed. For the first time hepatoprotective effect of QJ on acute liver damage was revealed by 1H-NMR based metabolomics, prompting understanding of the underlying mechanism.
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Obesity and its common association with type 2 diabetes, dyslipidemia, and cardiovascular diseases are worldwide epidemics. Currently, to prevent or treat obesity and associated metabolic disorders, herbal dietary supplements or medicines have attracted more and more attention owing to their relative effectiveness with fewer significant side effects. We investigate the therapeutic effects and underlying mechanisms of Plantago asiatica L. seed extract (PSE) on obesity and associated metabolic disorders in high-fat (HF) diet-induced mice. Our results displayed that PSE did not modify food intake or body weight but decreased abdominal white adipose tissue ratio, white/brown adipocyte size, serum total cholesterol, triglyceride (TG), low density lipoprotein cholesterol, free fatty acid, and hepatic TG concentrations when compared with the HF group. The levels of fasting blood glucose and glucose tolerance were improved in the PSE group when compared with the HF group. Furthermore, PSE upregulated mRNA expressions of peroxisome proliferator activated receptors (PPARs) and target genes related to fatty acid metabolism and energy expenditure in liver and adipose tissue of obese mice when compared with the HF group. PSE treatment effectively improved lipid and glucose metabolism in HF diet-induced obese mice. These effects might be attributed to the upregulation of PPAR signaling.
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Dieta Alta en Grasa/efectos adversos , Hiperglucemia/tratamiento farmacológico , Hiperglucemia/metabolismo , Obesidad/tratamiento farmacológico , Extractos Vegetales/uso terapéutico , Plantago/química , Tejido Adiposo Blanco/efectos de los fármacos , Tejido Adiposo Blanco/metabolismo , Animales , Peso Corporal/efectos de los fármacos , Glucosa/metabolismo , Hiperglucemia/sangre , Metabolismo de los Lípidos/efectos de los fármacos , Hígado/efectos de los fármacos , Hígado/metabolismo , Masculino , Ratones , Ratones Endogámicos C57BL , Ratones Obesos , Obesidad/etiología , PPAR gamma/metabolismoRESUMEN
This paper utilized a quantitative (1)H nuclear magnetic resonance (qHNMR) method for assessing the purity of iridoids and secoiridoids. The method was fully validated, including specificity, linearity, accuracy, precision, reproducibility, and robustness. For optimization of experimental conditions, several experimental parameters were investigated, including relaxation delay (D1), scan numbers (NS) and power length (PL1). The quantification was based on the area ratios of H-3 from analytes relative to aromatic protons from 1,4-dinitrobenzene (internal standard) with methanol-d4 as solvent. Five iridoids and secoiridoids (sweroside, swertiamarin, gentiopicroside, geniposide, genipin) were analyzed. Furthermore, the results were validated by the high performance liquid chromatography coupled with ultraviolet detection (HPLC-UV) method. It can be concluded that the qHNMR method was simple, rapid, and accurate, providing a reliable and superior method for assessing the purity of iridoids and secoiridoids.
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Glucósidos Iridoides/química , Espectroscopía de Resonancia Magnética/métodos , Cromatografía Líquida de Alta Presión/métodos , Iridoides/química , Estructura Molecular , Pironas/química , Reproducibilidad de los Resultados , Sensibilidad y EspecificidadRESUMEN
A simple, rapid and sensitive liquid chromatography-mass spectrometry (LC-MS) method was developed for the determination of salidroside in rat plasma and study of its pharmacokinetics after oral administration of suspension of Erzhi Wan and Fructus Ligustri lucidi into Wistar rats. Plasma sample of 200 µL was extracted with acetic ether-isopropanol (2:1) and the extraction was performed on a Kromasil C18 column (150 mm × 4. 6 mm, 5 µm) with the mobile phase of methanol-water (41:59, v/v) within a run time of 6.0 min. The analyte was monitored with positive electrospray ionization (ESI) by selected ion monitoring (SIM) mode. The target ions were m/z 323.05 for salidroside and m/z 411.05 for internal Standard (IS) geniposide. A good linear relationship was obtained over the range of 5.0-500.0 ng/mL and the lower limit of quantification was 5.0 ng/mL. The validated method was successfully applied to the pharmacokinetic study of salidroside in rat plasma after oral administration of suspension of Erzhi Wan and Fructus Ligustri lucidi.