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1.
Prostaglandins Other Lipid Mediat ; 167: 106732, 2023 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-37044156

RESUMO

OBJECTIVE: This study aimed to explore the clinical significance of fatty acid transport-related protein (FATRP) in patients with clear cell renal cell carcinoma(ccRCC). METHODS: RNA-seq data and corresponding clinical data of ccRCC were obtained from TCGA data portal. Seventeen key FATRP genes were comprehensively investigated using bioinformatics approaches to systematically investigate their expression patterns in ccRCC. In addition, the correlation between the expression levels of these genes and clinicopathological features in ccRCC was further explored. RESULTS: Among the 17 key FATRP genes, only FABP5, FABP6, and FABP7 could be regarded as ideal biomarkers for ccRCC, as they were highly expressed in ccRCC tumor tissues, and positively correlates with tumor progression and poor prognosis. FABP6 had the highest copy number variations (CNV) events (63.07 %), and ccRCC patients with FABP6 amplification had a better prognosis than the unaltered group. DNA methylation levels of FABP6 and FABP7 were downregulated in ccRCC tumor tissues compared to those in normal tissues. FABP5 showed the opposite results. Moreover, a novel four FATRP gene (FABP1, FABP5, FABP7, FATP2) and three clinical parameter (age, stage, and grade) prediction model was constructed and that comprised a significant independent prognostic signature. CONCLUSIONS: Only a few FATRP genes are upregulated in ccRCC tumor tissue, and positively correlate with tumor progression and poor prognosis. The accuracy of a single gene of these FATRP genes as predictors of progression and prognosis of ccRCC is limited. The performance of the novel prediction model proposed by this study was much better than that of any single gene.


Assuntos
Carcinoma de Células Renais , Neoplasias Renais , Humanos , Carcinoma de Células Renais/metabolismo , Neoplasias Renais/metabolismo , Variações do Número de Cópias de DNA , Prognóstico , Ácidos Graxos , Proteínas de Ligação a Ácido Graxo/genética
2.
Front Oncol ; 12: 946693, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36276151

RESUMO

Most patients with hepatocellular carcinoma (HCC) are diagnosed when the disease is already at an advanced stage, so they are not eligible for resection and their prognosis is poor. The combination of transarterial chemoembolization (TACE) with immune checkpoint inhibitors or tyrosine kinase inhibitors can improve unresectable HCC to the point that patients can be treated with surgery. Here we describe two cases of such "conversion therapy". One patient was a 52-year-old man in Child-Pugh class A with treatment-naive HCC whose 11.3-cm tumor had invaded the middle hepatic vein and right branch of the portal vein. He was treated with TACE plus camrelizumab, and radical resection was performed 3 months later. No evidence of recurrence was observed during 5-month follow-up. The other patient was a 42-year-old man in Child-Pugh class A with HCC involving a 11.4-cm tumor and severe liver cirrhosis. The patient was treated with TACE and lenvatinib, but the embolic effect after one month was unsatisfactory, so the regional treatment was changed to hepatic artery infusion chemotherapy and transcatheter arterial embolization. Radical resection was performed 2 months later, and no recurrence was evident at 1-month follow-up. These cases demonstrate two conversion therapies that may allow patients with initially unresectable HCC to benefit from resection.

3.
Materials (Basel) ; 15(16)2022 Aug 16.
Artigo em Inglês | MEDLINE | ID: mdl-36013764

RESUMO

Ordinary cement is not environmentally friendly, has high cost and lacks superior performance. Many scholars use various admixtures to adjust the properties of cement slurry, but admixtures are usually not environmentally friendly, and it is difficult to ensure that the properties after deployment meet engineering requirements. In this study, a variety of admixtures were obtained using the environmental protection method, and the optimal mixing ratio was analyzed by combining the entropy weight method and the Taguchi grey relational analysis method. The developed cement slurry was compared with conventional slurry from both macroscopic and microscopic aspects. Aiming at the problem that previous scholars lacked the engineering feasibility verification of the developed slurry, this study combined the constitutive equation regression analysis method, discrete element numerical simulation and other methods to study various actual engineering conditions. The results show that the optimal mix ratio of silica fume cement slurry has good permeability characteristics under the conditions of different roughness, grouting pressure and confining pressure. At the same time, under different geological temperatures and different erosive liquid states, the cement slurry stone body shows good properties of reinforcement materials.

4.
Fitoterapia ; 155: 105037, 2021 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-34536534

RESUMO

Eight cephalotaxine-type alkaloids (1-8), including two new compounds cephafortunines A and B (1-2), were isolated from the branches and leaves of Cephalotaxus fortunei var. alpina. Their structures were identified by a series of spectroscopic methods (MS, UV, IR, 1D, and 2D NMR) and comparison with the reported data of known analogs. The absolute configurations of 1 and 2 were determined by electronic circular dichroism (ECD) calculations. 1-8 were evaluated for their in vitro antiproliferation effects against two human leukemia cell lines (U937 and HL-60). All compounds showed different levels of antiproliferation effects against U937 cells with GI50 values of 4.21-23.70 µM. 4 and 5 were the most active against U937 cells with GI50 values of 4.21 and 6.58 µM and against HL-60 cells with GI50 values of 6.66 and 6.70 µM, respectively. 4 and 5 arrested HL-60 cell cycle in G0/G1 phase.


Assuntos
Antineoplásicos Fitogênicos/farmacologia , Cephalotaxus/química , Harringtoninas/farmacologia , Antineoplásicos Fitogênicos/isolamento & purificação , China , Células HL-60 , Harringtoninas/isolamento & purificação , Humanos , Estrutura Molecular , Compostos Fitoquímicos/isolamento & purificação , Compostos Fitoquímicos/farmacologia , Folhas de Planta/química , Células U937
5.
Zhongguo Zhong Yao Za Zhi ; 32(8): 692-4, 2007 Apr.
Artigo em Chinês | MEDLINE | ID: mdl-17608221

RESUMO

OBJECTIVE: To study the chemical constituents from the stems and leaves of Calophyllum inophyllum. METHOD: The compounds were isolated by column chromatography on silica gel, Sephadex LH-20 and preparative TLC. Their structures were elucidated by chemical methods and NMR, MS spectroscopic data. RESULT: Nine compounds were identified as 2-hydroxyxanthone (1), 4-hydroxyxanthone (2), 1, 5-dihydroxyxanthone (3), 1, 7-dihydroxyxanthone (4), 1, 3, 5-trihydroxy-2-methoxyxanthone (5), 6-deoxyjacareubin (6), amentoflavone (7), kaempferol-3-O-alpha-L-rhamnoside (8) and quercetin-3-O-alpha-L-rhamnoside (9). CONCLUSION: Compounds 8 and 9 were isolated from the genus Calophyllum and compounds 1, 2, 4-6 were isolated from this plant for the first time.


Assuntos
Calophyllum/química , Flavonoides/análise , Folhas de Planta/química , Caules de Planta/química , Cromatografia/métodos , Flavonoides/química , Flavonoides/isolamento & purificação , Glicosídeos/análise , Glicosídeos/química , Glicosídeos/isolamento & purificação , Quempferóis/análise , Quempferóis/química , Quempferóis/isolamento & purificação , Espectroscopia de Ressonância Magnética/métodos , Espectrometria de Massas/métodos , Plantas Medicinais/química , Piranos/análise , Piranos/química , Piranos/isolamento & purificação , Quercetina/análogos & derivados , Quercetina/análise , Quercetina/química , Quercetina/isolamento & purificação , Xantenos/análise , Xantenos/química , Xantenos/isolamento & purificação
6.
J Control Release ; 210: 160-8, 2015 Jul 28.
Artigo em Inglês | MEDLINE | ID: mdl-26003044

RESUMO

This work aimed to improve the oral bioavailability and plasma lipid-lowering effect of probucol (PB) by constructing a combined drug delivery system (CDDS) composed of nanostructured lipid carrier (NLC) and PEGylated poly(amidoamine) dendrimer (PEG-PAMAM). PEG-PAMAM with dendrimer generations of 5 (G5-PEG) or 7 (G7-PEG) were incorporated in PB-NLCs to form PB-CDDSs, PB-NLCs/G5-PEG and PB-NLCs/G7-PEG. The resultant two kinds of PB-CDDSs were characterized by particle size, zeta potential, drug encapsulation efficacy, PB release rates, and physical stability. Formulation effects of NLC and CDDS on the cellular uptake of hydrophobic drug were explored in Caco-2 cells by fluorescent Cy5 dye as a hydrophobic drug model. Furthermore, in vivo pharmacokinetics of the PB-CDDS composed of G5-PEG and PB-NLCs were investigated in a low density lipoprotein receptor knockout (LDLr-/-) mouse model, including plateau plasma PB concentrations after oral administration of multiple doses, and bioavailability after oral administration of a single dose of different PB formulations. In addition, lipid-lowering effect of PB-NLCs/G5-PEG was studied. The results indicate that both G5-PEG and G7-PEG significantly improved aqueous solubility of PB. The two PB-CDDSs exhibited similar particle size (around 150nm) as PB-NLCs, but slower PB burst release rate, higher total PB release amount, and better particle morphology and storage stability than PB-NLCs. In comparison with traditional NLC, CDDS dramatically enhanced cellular uptake of Cy5 into Caco-2 cells. In vivo results demonstrate that PB-NLCs/G5-PEG had the highest plateau plasma PB concentration and oral bioavailability, and the greatest cholesterol-lowering effect in comparison with PB suspensions and PB-NLCs. Therefore, G5-PEG incorporating NLC can be exploited as a promising drug delivery system to improve oral bioavailability and lipid-lowering effect of PB.


Assuntos
Anticolesterolemiantes/administração & dosagem , Dendrímeros/administração & dosagem , Portadores de Fármacos/administração & dosagem , Nanoestruturas/administração & dosagem , Polietilenoglicóis/administração & dosagem , Probucol/administração & dosagem , Administração Oral , Animais , Anticolesterolemiantes/sangue , Anticolesterolemiantes/química , Anticolesterolemiantes/farmacocinética , Disponibilidade Biológica , Células CACO-2 , Dendrímeros/química , Portadores de Fármacos/química , Liberação Controlada de Fármacos , Humanos , Lipídeos/sangue , Lipídeos/química , Masculino , Camundongos Knockout , Nanoestruturas/química , Polietilenoglicóis/química , Probucol/sangue , Probucol/química , Probucol/farmacocinética , Receptores de LDL/genética
7.
Fitoterapia ; 81(6): 586-9, 2010 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-20188156

RESUMO

A new friedelane-type triterpene (1), along with seven known triterpenoids, was isolated from the stems and leaves of Calophyllum inophyllum Linn. Their structures were established as 3beta, 23-epoxy-friedelan-28-oic acid (1), friedelin (2), epifriedelanol (3), canophyllal (4), canophyllol (5), canophyllic acid (6), 3-oxo-friedelan-28-oic acid (7), and oleanolic acid (8) by spectroscopic methods (NMR, EI-MS). The growth inhibitory effects of these triterpenoids on human leukemia HL-60 cells were determined.


Assuntos
Antineoplásicos Fitogênicos/isolamento & purificação , Calophyllum/química , Triterpenos/isolamento & purificação , Antineoplásicos Fitogênicos/química , Ensaios de Seleção de Medicamentos Antitumorais , Células HL-60 , Humanos , Estrutura Molecular , Triterpenos/química
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