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1.
Fitoterapia ; 175: 105930, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38554885

RESUMO

Two new quinoline alkaloids with an α, ß-unsaturated amide side chain, xylarinines A and B (1 and 2), were isolated from the ethyl acetate extracts of Xylaria longipes solid fermentation. The structures of these were primarily determined though NMR and HRESIMS data analysis. The absolute configuration of compound 1 was assigned using experimental and calculated ECD data. The neuroprotective effects of compounds 1 and 2 against glutamate-induced damage in PC12 cells were evaluated in vitro bioassay. The results demonstrated that both compounds significantly improved cell viability, inhibited apoptosis, decreased malondialdehyde (MDA) levels, increased superoxide dismutase (SOD) and glutathione (GSH) levels, and reduced intracellular reactive oxygen species (ROS) accumulation. These findings suggested that these mechanisms contribute to the neuroprotective effects of the compounds.


Assuntos
Alcaloides , Apoptose , Fármacos Neuroprotetores , Quinolinas , Espécies Reativas de Oxigênio , Xylariales , Células PC12 , Fármacos Neuroprotetores/farmacologia , Fármacos Neuroprotetores/isolamento & purificação , Animais , Ratos , Quinolinas/farmacologia , Quinolinas/isolamento & purificação , Estrutura Molecular , Alcaloides/farmacologia , Alcaloides/isolamento & purificação , Espécies Reativas de Oxigênio/metabolismo , Xylariales/química , Apoptose/efeitos dos fármacos , Superóxido Dismutase/metabolismo , Compostos Fitoquímicos/farmacologia , Compostos Fitoquímicos/isolamento & purificação , Malondialdeído/metabolismo , Glutationa/metabolismo , Sobrevivência Celular/efeitos dos fármacos , China , Ácido Glutâmico
2.
Nat Prod Res ; 38(1): 128-134, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-35949107

RESUMO

A pair of new chromone derivative enantiomers, (+)-xylarichromone A (1a) and (-)-xylarichromone A (1b), were isolated from the solid fermentation of Xylaria nigripes. The planar structure of 1 was determined by extensive NMR spectroscopic data, and its absolute configuration was assigned by comparison the ECD spectra with the known chromone derivatives. Compound 1 was the first chromone derivative reported from this medicinal fungus. The neuroprotective effects of 1 against oxygen and glucose deprivation (OGD) induced pheochromocytoma-12 cells (PC12) injury was investigated.


Assuntos
Ascomicetos , Cromonas , Cromonas/farmacologia , Cromonas/química , Estrutura Molecular , Espectroscopia de Ressonância Magnética
3.
Nat Prod Res ; : 1-9, 2023 Apr 11.
Artigo em Inglês | MEDLINE | ID: mdl-37039464

RESUMO

Two pairs of new isobenzofuranone derivative enantiomers, (±)-penicifurans E (1) and (±)-penicifurans F (2), together with four know compounds (3-6) were isolated from the solid fermentation of Penicillium canescens DWS225. The structures of these enantiomers were elucidated by extensive NMR spectroscopic data, and their absolute configurations were assigned by the experimental and calculated ECD data. The neuroprotective effects of all the isolates against oxygen-glucose deprivation/reperfusion injury in pheochromocytoma-12 cells (PC12) were investigated.

4.
Phytochemistry ; 210: 113652, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-36967032

RESUMO

Three undescribed methylsuccinic acid derivatives, xylaril acids A-C, and two undescribed enoic acid derivatives, xylaril acids D-E, were isolated from the fungus Xylaria longipes. The structures of the undescribed compounds were deduced by spectroscopic means, including HRESIMS and 1D/2D NMR spectroscopy, as well as ECD calculations. The absolute configuration of xylaril acids A was further determined by single-crystal X-ray diffraction experiments. All the isolated compounds displayed neuroprotective activities against oxygen-glucose deprivation/reperfusion injury in PC12 cells by enhancing cell viability and inhibiting cell apoptosis.


Assuntos
Ascomicetos , Xylariales , Ratos , Animais , Xylariales/química , Espectroscopia de Ressonância Magnética , Estrutura Molecular
5.
Food Funct ; 14(8): 3686-3700, 2023 Apr 24.
Artigo em Inglês | MEDLINE | ID: mdl-36971300

RESUMO

The possible mechanism by which the active components of Anhua fuzhuan tea act on FAM in NAFLD lesions was investigated. 83 components of Anhua fuzhuan tea were analysed by UPLC-Q-TOF/MS. Luteolin-7-rutinoside and other compounds were first discovered in fuzhuan tea. According to the TCMSP database and the Molinspiration website tool to predict and review the literature reports, 78 compounds were identified in fuzhuan tea with possible biological activities. The PharmMapper, Swiss target prediction, and SuperPred databases were used to predict the action targets of biologically active compounds. The GeneCards, CTD, and OMIM databases were mined for NAFLD and FAM genes. Then, a fuzhuan Tea-NAFLD-FAM Venn diagram was constructed. Using the STRING database and CytoHubba program of Cytoscape software, protein interaction analysis was performed, and 16 key genes, including PPARG, were screened. GO function and KEGG enrichment analyses of the screened key genes showed that Anhua fuzhuan tea may regulate FAM in the process of NAFLD through the AMPK signalling pathway, nonalcoholic fatty liver disease pathway, etc. After constructing an active ingredient-key target-pathway map with Cytoscape software, combined with literature reports and BioGPS database analysis, we believe that among the 16 key genes, SREBF1, FASN, ACADM, HMGCR, and FABP1 have potential in the treatment of NAFLD. Animal experiments confirmed the effect of Anhua fuzhuan tea in improving NAFLD and confirmed that this tea can interfere with the gene expression of the above five targets by the AMPK/PPAR pathway, providing support for Anhua fuzhuan tea interfering with FAM in NAFLD lesions.


Assuntos
Medicamentos de Ervas Chinesas , Hepatopatia Gordurosa não Alcoólica , Animais , Proteínas Quinases Ativadas por AMP/genética , Farmacologia em Rede , Hepatopatia Gordurosa não Alcoólica/tratamento farmacológico , Hepatopatia Gordurosa não Alcoólica/genética , Bases de Dados Factuais , Chá , Medicamentos de Ervas Chinesas/farmacologia , Simulação de Acoplamento Molecular
6.
Zhongguo Zhong Yao Za Zhi ; 47(21): 5926-5935, 2022 Nov.
Artigo em Chinês | MEDLINE | ID: mdl-36472012

RESUMO

Xiaoer Fupi Granules, a refined version of the classical prescription Shenling Baizhu Powder, has the effect of invigora-ting spleen, replenishing Qi, harmonizing stomach and resolving accumulation and is commonly used to treat Qi deficiency in spleen and stomach, disordered transportation and transformation, and indigestion of children. However, its medicinal constituents and mechanism remain unclear. We studied the main active constituents and action mechanism of Xiaoer Fupi Granules by integrating network pharmacology and prototype constituent analysis in vivo. This study will help to increase the reliability of database analysis results and lay a foundation for precise medication and mining of quality control markers. On the basis of Bioinformatics Analysis Tool for Molecular mechanism of Traditional Chinese Medicine(BATMAN-TCM), the "key chemical constituents-target" network was constructed. Ultra-performance liquid chromatography coupled with linear ion trap-orbitrap mass spectrometry(UPLC-LTQ-Orbitrap-MS) was employed to analyze the absorbed constituents in rat urine and plasma, so as to validate the network. Further, we used BATMAN-TCM to construct the "absorbed constituents-target-pathway" network and explore the functioning mechanism of Xiaoer Fupi Granules. A total of 86 chemical constituents of Xiaoer Fupi Granules were predicted via BATMAN-TCM, among which only 18.6% were detected in rat plasma and urine. Accor-ding to the "absorbed constituents-target-pathway" network, 8 chemical constituents such as stearic acid and caprylic acid capable of regulating gastric acid and insulin secretion may be the critical constituents of Xiaoer Fupi Granules in invigorating spleen and harmonizing stomach. This study identified the critical active constituents and predicted the action mechanism of Xiaoer Fupi Granules, providing the reference for the research on the material basis of Xiaoer Fupi Granules.


Assuntos
Medicamentos de Ervas Chinesas , Ratos , Animais , Medicamentos de Ervas Chinesas/química , Reprodutibilidade dos Testes , Farmacologia em Rede , Medicina Tradicional Chinesa , Cromatografia Líquida
7.
Chem Biodivers ; 19(10): e202200767, 2022 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-36098055

RESUMO

Two new C21 steroidal glycosides, brapreguanes A and B (1-2) were isolated from 75 % aqueous ethanol extract of Selaginella braunii Baker. Their structures were established by spectroscopic analyses (1D/2D NMR spectra and HR-ESI-MS). The absolute configurations of sugar were elucidated by enzymatic hydrolysis and GCMS analysis. In addition, all compounds were evaluated for the anti-proliferative activities against various human cancer cells in vitro. Compounds exhibited no inhibition to various human cancer cells.


Assuntos
Selaginellaceae , Humanos , Selaginellaceae/química , Estrutura Molecular , Glicosídeos/farmacologia , Glicosídeos/química , Açúcares , Etanol , Extratos Vegetais
8.
World J Gastrointest Oncol ; 14(4): 872-886, 2022 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-35582102

RESUMO

BACKGROUND: The phosphoinositide 3-kinase/protein kinase-B/mechanistic target of rapamycin (PI3K/Akt/mTOR) signalling pathway is crucial for cell survival, differentiation, apoptosis and metabolism. Xihuang pills (XHP) are a traditional Chinese preparation with antitumour properties. They inhibit the growth of breast cancer, glioma, and other tumours by regulating the PI3K/Akt/mTOR signalling pathway. However, the effects and mechanisms of action of XHP in hepatocellular carcinoma (HCC) remain unclear. Regulation of the PI3K/Akt/mTOR signalling pathway effectively inhibits the progression of HCC. However, no study has focused on the XHP-associated PI3K/Akt/mTOR signalling pathway. Therefore, we hypothesized that XHP might play a role in inhibiting HCC through the PI3K/Akt/mTOR signalling pathway. AIM: To confirm the effect of XHP on HCC and the possible mechanisms involved. METHODS: The chemical constituents and active components of XHP were analysed using ultra-performance liquid chromatography-quadrupole time of flight mass spectrometry (UPLC-Q-TOF-MS). Cell-based experiments and in vivo xenograft tumour experiments were utilized to evaluate the effect of XHP on HCC tumorigenesis. First, SMMC-7721 cells were incubated with different concentrations of XHP (0, 0.3125, 0.625, 1.25, and 2.5 mg/mL) for 12 h, 24 h and 48 h. Cell viability was assessed using the CCK-8 assay, followed by an assessment of cell migration using a wound healing assay. Second, the effect of XHP on the apoptosis of SMMC-7721 cells was evaluated. SMMC-7721 cells were stained with fluorescein isothiocyanate and annexin V/propidium iodide. The number of apoptotic cells and cell cycle distribution were measured using flow cytometry. The cleaved protein and mRNA expression levels of caspase-3 and caspase-9 were detected using Western blotting and quantitative reverse-transcription polymerase chain reaction (RT-qPCR), respectively. Third, Western blotting and RT-qPCR were performed to confirm the effects of XHP on the protein and mRNA expression of components of the PI3K/Akt/mTOR signalling pathway. Finally, the effects of XHP on the tumorigenesis of subcutaneous hepatocellular tumours in nude mice were assessed. RESULTS: The following 12 compounds were identified in XHP using high-resolution mass spectrometry: Valine, 4-gingerol, myrrhone, ricinoleic acid, glycocholic acid, curzerenone, 11-keto-ß-boswellic acid, oleic acid, germacrone, 3-acetyl-9,11-dehydro-ß-boswellic acid, 5ß-androstane-3,17-dione, and 3-acetyl-11-keto-ß-boswellic acid. The cell viability assay results showed that treatment with 0.625 mg/mL XHP extract decreased HCC cell viability after 12 h, and the effects were dose- and time-dependent. The results of the cell scratch assay showed that the migration of HCC cells was significantly inhibited in a time-dependent manner by the administration of XHP extract (0.625 mg/mL). Moreover, XHP significantly inhibited cell migration and resulted in cell cycle arrest and apoptosis. Furthermore, XHP downregulated the PI3K/Akt/mTOR signalling pathway, which activated apoptosis executioner proteins (e.g., caspase-9 and caspase-3). The inhibitory effects of XHP on HCC cell growth were determined in vivo by analysing the tumour xenograft volumes and weights. CONCLUSION: XHP inhibited HCC cell growth and migration by stimulating apoptosis via the downregulation of the PI3K/Akt/mTOR signalling pathway, followed by the activation of caspase-9 and caspase-3. Our findings clarified that the antitumour effects of XHP on HCC cells are mediated by the PI3K/Akt/mTOR signalling pathway, revealing that XHP may be a potential complementary therapy for HCC.

9.
Phytochemistry ; 195: 113073, 2022 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-34974412

RESUMO

Six flavonoids, namely, three undescribed biflavonoids, one undescribed 8-aryl flavonoid, and two known compounds, were isolated from Selaginella tamariscina (P.Beauv.) Spring. The structures and absolute configurations of those undescribed compounds were established by NMR spectroscopy data, HRESIMS analyses and electronic circular dichroism (ECD) analyses. In addition, all the isolates were evaluated for their hypoglycemic activity in HepG2 cells. Involvenflavone H, I, and J significantly increased glucose consumption in both normal and insulin-resistant HepG2 cells. Interestingly, these three compounds can effectively upregulate the protein expression of glucokinase (GCK) and adenylate cyclases (ADCYs). These results suggested that involvenflavone H, I, and J (especially involvenflavone J) may have potent hypoglycemic activity, which also provided promising molecular targets for the treatment of diabetes.


Assuntos
Selaginellaceae , Flavonoides/farmacologia , Hipoglicemiantes/farmacologia , Insulina , Estrutura Molecular
10.
Nat Prod Res ; 36(7): 1797-1802, 2022 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-32924604

RESUMO

A chalcone-flavonone type biflavonoid, trichocladabiflavone A (1), along with eight known biflavonoids (2-9) were isolated from the 70% EtOH extract of Selaginella trichoclada. Their structures were elucidated by extensive spectroscopic analyses. Compound 1 was the first chalcone-flavonone type biflavonoid reported in the genus Selaginella. Moreover, compound 1 exhibited moderate cytotoxicity against DU145, MCF-7 and PC3 human cancer cell lines.


Assuntos
Biflavonoides , Chalcona , Chalconas , Selaginellaceae , Biflavonoides/química , Biflavonoides/farmacologia , Chalcona/química , Humanos , Estrutura Molecular , Extratos Vegetais/química , Selaginellaceae/química
11.
Nat Prod Res ; 36(6): 1522-1528, 2022 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-33715538

RESUMO

Four new resorcinol derivatives, namely (-)/(+)-xylarinig A (1), as well as xylarinigs B (2) and C (3), were isolated from the ethyl acetate extracts of the solid fermentation of Xylaria nigripes. Their structures were established by comprehensive spectroscopic analysis combined with electronic circular dichroism (ECD) calculations. Compound 1 is an optical mixture, and was resoluted into optical pure enatiomers (+)-1 and (-)-1 by chiral HPLC. The neuroprotective effects of 1-3 against the damage of PC12 cells induced by oxygen and glucose deprivation (OGD) were evaluated.


Assuntos
Ascomicetos , Fármacos Neuroprotetores , Xylariales , Animais , Fármacos Neuroprotetores/farmacologia , Células PC12 , Ratos , Resorcinóis/farmacologia , Xylariales/química
12.
World J Gastrointest Oncol ; 13(11): 1725-1740, 2021 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-34853646

RESUMO

BACKGROUND: Hepatocellular carcinoma (HCC) is characterized by dysregulation of the immune microenvironment and the development of chemoresistance. Specifically, expression of the programmed cell death protein 1 (PD-1)/programmed cell death 1 ligand 1 (PD-L1) axis, an immune checkpoint, may lead to tumour immune escape, resulting in disease progression. The latest research shows that tumour immune escape may be caused by the upregulation of PD-L1 mediated by hypoxia-inducible factor-1 alpha (HIF-1α), and simultaneous inhibition of HIF-1α and PD-L1 has the potential to enhance the host's antitumour immunity. Moreover, inhibition of the PD-1/PD-L1 axis may mitigate tumour chemoresistance. Shuyu pills (SYPs) contain immunity-enhancing and antitumour components, making them a potential HCC treatment. AIM: To investigate the efficacy of SYPs for HCC treatment via simultaneous HIF-1α and PD-L1 inhibition and the mechanism involved. METHODS: A subcutaneous xenograft tumour model was first established in BALB/c nude mice by the subcutaneous injection of 1 × 107 SMMC-7721 cells. Male mice (male, 5 weeks old; n = 24) were then randomly divided into the following four groups (n = 6): Control (0.9% normal saline), SYP (200 mg/kg), SYP + cisplatin (DDP) (200 mg/kg + 5 mg/kg DDP weekly via intraperitoneal injection), and DDP (5 mg/kg cisplatin weekly via intraperitoneal injection). The dose of saline or SYPs for the indicated mouse groups was 0.2 mL/d via intragastric administration. The tumour volumes and body weights of the mice were measured every 2 d. The mice were euthanized by cervical dislocation after 14 d of continuous treatment, and the xenograft tissues were excised and weighed. Western blot assays were used to measure the protein expression of HIF-1α, PD-1, PD-L1, CD4+ T cells, and CD8+ T cells in HCC tumours from mice. Quantitative reverse transcription polymerase chain reaction was used for real-time quantitative detection of PD-1, PD-L1, and HIF-1α mRNA expression. An immunofluorescence assay was conducted to examine the expression of CD4+ T cells and CD8+ T cells. RESULTS: Compared to mice in the control group, those in the SYP and SYP + DDP groups exhibited reduced tumour volumes and tumour weights. Moreover, the protein and mRNA expression levels of the oncogene HIF-1α and that of the negative immunomodulatory factors PD-1 and PD-L1 were decreased in both the SYP and SYP + DDP groups, with the decrease effects being more prominent in the SYP + DDP group than in the SYP group (HIF-1α protein: Control vs SYP, P = 0.0129; control vs SYP + DDP, P = 0.0004; control vs DDP, P = 0.0152, SYP + DDP vs DDP, P = 0.0448; HIF-1α mRNA: control vs SYP, P = 0.0009; control vs SYP + DDP, P < 0.0001; control vs DDP, P = 0.0003, SYP vs SYP + DDP, P = 0.0192. PD-1 protein: Control vs SYP, P = 0.0099; control vs SYP + DDP, P < 0.0001, SPY vs SYP + DDP, P = 0.0009; SYP + DDP vs DDP, P < 0.0001; PD-1 mRNA: control vs SYP, P = 0.0002; control vs SYP + DDP, P < 0.0001; control vs DDP, P = 0.0003, SPY vs SYP + DDP, P = 0.0003; SYP + DDP vs DDP, P = 0.0002. PD-L1 protein: control vs SYP, P < 0.0001; control vs SYP + DDP, P < 0.0001; control vs DDP, P < 0.0001, SPY vs SYP + DDP, P = 0.0040; SYP + DDP vs DDP, P = 0.0010; PD-L1 mRNA: Control vs SYP, P < 0.0001; control vs SYP + DDP, P < 0.0001; control vs DDP, P < 0.0001, SPY vs SYP + DDP, P < 0.0001; SYP + DDP vs DDP, P = 0.0014). Additionally, the quantitative and protein expression levels of CD4+ T cells and CD8+ T cells were simultaneously upregulated in the SYP + DDP group, whereas only the expression of CD4+ T cells was upregulated in the SYP group. (CD4+ T cell quantitative: Control vs SYP + DDP, P < 0.0001, SYP vs SYP + DDP, P = 0.0005; SYP + DDP vs DDP, P = 0.0002. CD4+ T cell protein: Control vs SYP, P = 0.0033; Control vs SYP + DDP, P < 0.0001; Control vs DDP, P = 0.0021, SYP vs SYP + DDP, P = 0.0004; SYP + DDP vs DDP, P = 0.0006. Quantitative CD8+ T cells: Control vs SYP + DDP, P = 0.0013; SYP vs SYP + DDP, P = 0.0347; SYP + DDP vs DDP, P = 0.0043. CD8+ T cell protein: Control vs SYP + DDP, P < 0.0001; SYP vs SYP + DDP, P < 0.0001; SYP + DDP vs DDP, P < 0.0001). Finally, expression of HIF-1α was positively correlated with that of PD-1/PD-L1 and negatively correlated with the expression of CD4+ T cells and CD8+ T cells. CONCLUSION: SYPs inhibit immune escape and enhance chemosensitization in HCC via simultaneous inhibition of HIF-1α and PD-L1, thus inhibiting the growth of subcutaneous xenograft HCC tumours.

13.
Zhongguo Zhong Yao Za Zhi ; 46(5): 1205-1210, 2021 Mar.
Artigo em Chinês | MEDLINE | ID: mdl-33787116

RESUMO

To explore the effect of Baihe Dihuang Decoction on the synaptic plasticity of hippocampal neurons in rats with anxious depression. Fifty SD rats were randomly divided into normal group, model group, venlafaxine group(6.75 mg·kg~(-1)), high-dose Baihe Dihuang Decoction group(8.64 g·kg~(-1)) and low-dose Baihe Dihuang Decoction group(4.32 g·kg~(-1)). Chronic restraint stress(6 h) combined with corticosterone(ih, 30 mg·kg~(-1)) was used to establish an anxious depression model, and 7 days after modeling, the administration started and continued for 21 days. The anxiety and depression-like behaviors of the rats were evaluated. Golgi-Cox staining and electron microscopy were used to observe the morphology and ultrastructural changes of synaptic dendrites. Immunofluorescence was used to detect the expression of hippocampal synaptic plasticity protein synapsin-1 and postsynaptic density protein 95(PSD-95). Western blot method was used to detect the expression of functional protein synaptophysin(SYP) and synaptic Ras GTPase activating protein(SynGap). The results showed that the rats in the model group had obvious anxiety and depression-like behaviors, the hip-pocampal dendritic spine density and branch length were reduced, the number of synapses was cut, and the internal structure was da-maged. The average fluorescence intensity of synapsin-1 and PSD-95 was significantly reduced and the expression of SYP and SynGap also decreased. High-dose Baihe Dihuang Decoction could significantly improve the anxiety and depression-like behaviors of model rats, relieve synaptic damage, and increase the expression of synapsin-1, PSD-95, SYP, and SynGap proteins. Therefore, we believe that Baihe Dihuang Decoction can improve anxiety and depression behaviors by regulating the synaptic plasticity of hippocampal neurons.


Assuntos
Depressão , Plasticidade Neuronal , Animais , Depressão/tratamento farmacológico , Hipocampo , Ratos , Ratos Sprague-Dawley , Sinapses
14.
Phytochemistry ; 186: 112729, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-33721798

RESUMO

Five pairs of undescribed naphthalenone derivative enantiomers, xylarinaps A-E, including one pair of indole naphthalenones and four pairs of naphthalene-naphthalenone dimers, were isolated from the ethyl acetate extracts of the solid fermentation of Xylaria nigripes, which has been used as a traditional Chinese medicinal fungus for the treatment of insomnia, trauma, and depression. The structures of these enantiomers were elucidated based on comprehensive spectroscopic analysis, including NMR and HRESIMS. Their absolute configurations were assigned by the experimental and calculated ECD data. The neuroprotective effects of all the compounds against damage to PC12 cells by oxygen and glucose deprivation (OGD) were evaluated by an in vitro bioassay. The results revealed that xylarinaps A, B, D, and E significantly enhanced cell viability, decreased the levels of malondialdehyde (MDA), increased the levels of superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px), as well as further markedly inhibiting apoptosis, which indicated that these results could be the mode of action of their neuroprotective effect.


Assuntos
Fármacos Neuroprotetores , Animais , Apoptose , Ascomicetos , Glutationa Peroxidase/metabolismo , Glutationa Peroxidase/farmacologia , Malondialdeído , Fármacos Neuroprotetores/farmacologia , Estresse Oxidativo , Células PC12 , Ratos , Superóxido Dismutase/metabolismo
15.
J Nat Prod ; 83(2): 216-222, 2020 02 28.
Artigo em Inglês | MEDLINE | ID: mdl-31994397

RESUMO

Palhinosides A-H (1-8), new flavone glucosidic truxinate esters, including ß-truxinate and µ-truxinate forms, were isolated from Palhinhaea cernua. Their structures were elucidated by extensive spectroscopic methods and chemical analyses. The flavone glucoside cyclodimers possess a unique cyclobutane ring in their carbon scaffolds. Compounds 2-7 represent three pairs of stereoisomers (2/3, 4/5, 6/7). The protective effects of 1-8 against the damage of HT-22 cells induced by l-glutamate were evaluated, and compounds 4 and 5 showed better neuroprotective effects than the positive control, Trolox.


Assuntos
Flavonas/isolamento & purificação , Lycopodiaceae/química , Triterpenos/isolamento & purificação , Ésteres , Flavonas/química , Glucosídeos , Estrutura Molecular , Fármacos Neuroprotetores , Triterpenos/química
16.
Zhongguo Zhong Yao Za Zhi ; 43(7): 1360-1365, 2018 Apr.
Artigo em Chinês | MEDLINE | ID: mdl-29728024

RESUMO

This paper aimed to predict the active ingredients and action targets of Compound Uncaria Hypotensive Tablet for hypertension based on network pharmacology, and discuss its possible "multi-components, multi-targets, and multi-pathways" mechanism for treatment of hypertension. The integrative pharmacological platform of traditional Chinese medicine (TCM-IP) was used to construct the component target-disease target network of Compound Uncaria Hypotensive Tablet, and the internet analysis method was used to screen the key nodes, on which the pathway enrichment analysis was carried out to explore its possible biological process in the treatment of hypertension. Target network analysis showed that, 35 predicted active ingredients of Compound Uncaria Hypotensive Tablet had a strong interaction with the prostaglandin endogenous peroxidase synthase (PTGS1, PTGS2), ATP synthetase (ATP1A1, ATP5A1, ATP5C1, ATP5B) and other 29 major proteins. Network enriched analysis showed that Compound Uncaria Hypotensive Tablet participated in the regulation of hypertension in different processes of pathology, through 15 pathways such as regulating blood pressure, G protein coupled receptor activation, adrenergic myocardial cell signal transduction and platelet activation. This study revealed the potential active compounds and possible mechanism of Compound Uncaria Hypotensive Tablet for treatment of hypertension, providing theoretical references for further systematic laboratory experiments on effective compounds and action mechanism of Compound Uncaria Hypotensive Tablet.


Assuntos
Medicamentos de Ervas Chinesas/uso terapêutico , Hipertensão/tratamento farmacológico , Uncaria , Humanos , Medicina Tradicional Chinesa , Transdução de Sinais , Comprimidos
17.
Fitoterapia ; 119: 45-50, 2017 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-28390973

RESUMO

Three new neolignans, lycocernuasides B-D (1-3), three new serratane triterpenoids, lycernuic ketones D (8) and E (9), and lycernuic A (10), together with six known compounds, were isolated from the 75% aqueous EtOH extract of Palhinhaea cernua. Their structures and absolute configurations were established primarily by NMR, HRESIMS and circular dichroism (CD). All compounds were evaluated the inhibitory activities of xanthine oxidase. Compounds 1-3 displayed moderate inhibitory effects on xanthine oxidase with IC50 values of 30.36µM, 42.65µM and 35.33µM, respectively.


Assuntos
Lignanas/química , Lycopodiaceae/química , Triterpenos/química , Xantina Oxidase/antagonistas & inibidores , Animais , Bovinos , Inibidores Enzimáticos/química , Inibidores Enzimáticos/isolamento & purificação , Lignanas/isolamento & purificação , Estrutura Molecular , Triterpenos/isolamento & purificação
18.
J Asian Nat Prod Res ; 19(11): 1087-1092, 2017 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-28303722

RESUMO

A new cyclic diarylheptanoid (1) and a new flavone glucoside (2), along with seven known compounds, were isolated from the green peel of Juglans mandshurica. Their structures were elucidated based on extensive spectroscopic analyses. Moreover, the cytotoxicity against NCI-H460, A549, and K562 cancer cells of compounds 1-6 was evaluated. The results showed that compound 3 exhibited moderate inhibitory potency against the growth of three cell lines.


Assuntos
Antineoplásicos Fitogênicos/isolamento & purificação , Diarileptanoides/isolamento & purificação , Medicamentos de Ervas Chinesas/isolamento & purificação , Flavonas/isolamento & purificação , Glucosídeos/isolamento & purificação , Juglans/química , Antineoplásicos Fitogênicos/química , Antineoplásicos Fitogênicos/farmacologia , Diarileptanoides/química , Diarileptanoides/farmacologia , Ensaios de Seleção de Medicamentos Antitumorais , Medicamentos de Ervas Chinesas/química , Medicamentos de Ervas Chinesas/farmacologia , Flavonas/química , Flavonas/farmacologia , Glucosídeos/química , Glucosídeos/farmacologia , Células Hep G2 , Humanos , Células K562 , Estrutura Molecular , Extratos Vegetais/química
19.
J Asian Nat Prod Res ; 19(2): 134-139, 2017 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-27243466

RESUMO

Three new isobenzofuranone derivatives erinaceolactones D-F (1-3), together with four known ones (4-7), were isolated from the fruiting bodies of Hericium erinaceus. Their structures were determined on the basis of comprehensive spectroscopic analyses including UV, 1D, 2D NMR and HR-TOF-MS. The absolute configuration of erinaceolactone D (1) and erinaceolactone E (2) were assigned by comparing their specific rotation with those of analogs in literatures. The four known compounds were isomers with each other and were isolated simultaneously for the first time.


Assuntos
Basidiomycota/química , Benzofuranos/isolamento & purificação , Carpóforos/química , Benzofuranos/química , Estrutura Molecular , Ressonância Magnética Nuclear Biomolecular
20.
Fitoterapia ; 111: 58-65, 2016 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-27094113

RESUMO

Hericium erinaceus is a well-known medicinal and edible mushroom, which is considered as a potential source to obtain antitumor candidates. In this work, five new isoindolinones, named erinaceolactams A-E (1-5), along with five known compounds (6-10), were isolated from 70% ethanol extract of the fruiting bodies of H. erinaceus. The structures of new compounds were validated by HRESIMS and 1D, 2D NMR. It's worth mentioning that there are two pairs of isomers included in the new compounds. Moreover, their cytotoxicity against metastatic human hepatocellular carcinoma cell lines SMMC-7221 and MHCC-97H were evaluated. The results showed that compounds 6 and 7 exhibited promising inhibitory potency against the growth of two cell lines.


Assuntos
Basidiomycota/química , Indóis/isolamento & purificação , Agaricales/química , Linhagem Celular Tumoral , Carpóforos/química , Humanos , Indóis/química , Isoindóis/química , Isoindóis/isolamento & purificação , Estrutura Molecular , Fenóis/química , Fenóis/isolamento & purificação
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