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1.
J Clin Rheumatol ; 28(1): e249-e256, 2022 Jan 01.
Artículo en Inglés | MEDLINE | ID: mdl-33902096

RESUMEN

METHODS: We queried the PubMed, Embase, Web of Science, and the CENTRAL (Cochrane Central Register of Controlled Trials) databases for this study. The pooled efficacy was evaluated using standardized mean differences. The inverse of the variance model was used for data pooling. RESULTS: Based on the search, we identified 9 randomized controlled trials. The trials included 258 patients in the atorvastatin plus DMARD groups and 246 patients in the DMARD alone groups. The primary outcome was the change from baseline in the 2018 (209:228 Disease Activity Score in 28 Joints). Based on the Disease Activity Score in 28 Joints, disease activity in RA patients decreased significantly in patients given atorvastatin plus DMARD compared with patients given DMARD alone (standardized mean difference, -2.46; 95% confidence interval, -3.98 to -0.95; p = 0.0015; I2 = 97%; p < 0.01). Subgroup analysis did not identify any confounding factors, and no publication bias was detected in the meta-analysis. CONCLUSIONS: The result supports that atorvastatin could be added to DMARDs to treat patients with RA.


Asunto(s)
Antirreumáticos , Artritis Reumatoide , Antirreumáticos/uso terapéutico , Artritis Reumatoide/diagnóstico , Artritis Reumatoide/tratamiento farmacológico , Atorvastatina , Humanos , Ensayos Clínicos Controlados Aleatorios como Asunto
2.
Waste Manag Res ; 39(12): 1451-1458, 2021 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-33499764

RESUMEN

This paper presents the melting temperature (MT) and energy consumption (EC) of model municipal solid waste incineration (MSWI) fly ash (FA) under the influence of calcium oxide (CaO), silicon dioxide (SiO2), aluminium oxide (Al2O3) and boron oxide (B2O3) based on thermochemistry simulations. Nine different base-to-acid ratios (B/A) of raw FA have been explored. The results show that the effects of CaO, SiO2 and Al2O3 vary for different B/A ranges. SiO2 and Al2O3 play positive roles in decreasing the MT and EC of FA4-FA9 with high B/A (B/A: 2.61, 4.48, 6.43, 6.90, 8.32, 8.82). CaO plays a positive role in decreasing the MT and EC of FA1 and FA2 with low B/A (B/A: 0.22, 0.43). In FA3 (B/A: 1.22), the MT and EC of FA cannot be reduced by adding CaO, SiO2 and Al2O3. The addition of B2O3 cannot only further reduce the MT of FA, but also reduce the EC. B2O3 and SiO2 can work together to reduce the MT and EC when B/A is high (2.61-8.82), and SiO2 and B2O3 can be introduced into the FA by adding waste glass and other boron containing waste to realize the coordinated disposal of waste.


Asunto(s)
Metales Pesados , Eliminación de Residuos , Carbono , Ceniza del Carbón , Incineración , Metales Pesados/análisis , Material Particulado , Dióxido de Silicio , Residuos Sólidos/análisis , Temperatura
3.
J Phys Chem A ; 123(3): 674-681, 2019 Jan 24.
Artículo en Inglés | MEDLINE | ID: mdl-30586305

RESUMEN

During pyrolysis of holocellulose, secondary reactions of the primary pyrolytic products inevitably occur, affecting the final pyrolytic product distribution. Carboxylic acids from primary pyrolysis process have significant interaction effects on both holocellulose and its pyrolytic products, whereas, the interaction mechanisms are still unclear. In the present study, acetic acid is selected as the typical carboxylic acid product, and glycerol is selected to represent the various hydroxyl-based compounds (both holocellulose and pyrolytic products such as anhydrosugars, etc.). The density functional theory (DFT) method is adopted to investigate the interaction mechanisms between them. Calculation results indicate that acetic acid and glycerol have strong interactions, with acetic acid acting as a catalyst for these interactions in two patterns. (I) Acetic acid enhances the dehydration reactions of glycerol with low energy barriers. (II) Acetic acid and glycerol undergo esterification to form an ester intermediate which then decomposes via various reactions. In addition, the decomposition of acetic acid can also be promoted by the catalysis of glycerol in a certain degree. This study reveals the basic interaction mechanisms between carboxylic acids and hydroxyl-based compounds, providing fundamental information to understand the secondary reactions during pyrolysis of holocellulose.

4.
Ren Fail ; 41(1): 473-480, 2019 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-31198075

RESUMEN

Background: To investigate the pathological spectrum of glomerular disease in patients with renal insufficiency (RI) from 2008 to 2017. Methods and results: We calculated the estimated glomerular filtration rate (eGFR) with the Chronic Kidney Disease Epidemiology Collaboration creatinine (CKD-EPI) equation and defined RI as an eGFR <60 ml/min/1.73 m2. A total of 969 RI patients were included in our study. IgA nephropathy (IgAN) was the most common subtype of primary glomerulonephritis (37.2%). The frequencies of IgAN and non-IgA mesangioproliferative glomerulonephritis decreased from 27.3% and 9.5% during 2008-2012 to 20.7% and 2.6% during 2013-2017, respectively. However, the frequency of membranous nephropathy increased from 6.8% to 16.2%. Lupus nephritis was the most common subtype of secondary glomerulonephritis (32.1%). The frequencies of both ANCA-associated systemic vasculitis and diabetic nephropathy increased from 3.8% to 7.6% and from 4.3% to 7.6%, respectively. The number of elderly patients (≥60 years) in our study increased sharply, from 15.6% in 2008 to 35.0% in 2017. Membranous nephropathy, minimal change disease, membranoproliferative glomerulonephritis, lupus nephritis and renal amyloidosis are more frequently observed in the elderly patients than in nonelderly patients (<60 years) (p < .05). Excluding those with acute kidney injury, IgAN was the leading cause of RI (24.9%), followed by membranous nephropathy (13.3%) and lupus nephritis (12.0%). Conclusions: IgAN and lupus nephritis were the most prevalent primary glomerulonephritis and secondary glomerulonephritis in patients with RI, respectively. The frequencies of membranous nephropathy, ANCA-associated systemic vasculitis and diabetic nephropathy increased significantly. The number of elderly patients with RI increased sharply.


Asunto(s)
Glomerulonefritis por IGA/epidemiología , Glomérulos Renales/patología , Nefritis Lúpica/epidemiología , Insuficiencia Renal Crónica/etiología , Adolescente , Adulto , Factores de Edad , Vasculitis Asociada a Anticuerpos Citoplasmáticos Antineutrófilos/epidemiología , Vasculitis Asociada a Anticuerpos Citoplasmáticos Antineutrófilos/patología , Vasculitis Asociada a Anticuerpos Citoplasmáticos Antineutrófilos/fisiopatología , Biopsia , China/epidemiología , Nefropatías Diabéticas/epidemiología , Nefropatías Diabéticas/patología , Nefropatías Diabéticas/fisiopatología , Femenino , Tasa de Filtración Glomerular , Glomerulonefritis por IGA/patología , Glomerulonefritis por IGA/fisiopatología , Glomerulonefritis Membranosa/epidemiología , Glomerulonefritis Membranosa/patología , Glomerulonefritis Membranosa/fisiopatología , Humanos , Glomérulos Renales/fisiopatología , Nefritis Lúpica/complicaciones , Nefritis Lúpica/patología , Masculino , Persona de Mediana Edad , Prevalencia , Insuficiencia Renal Crónica/patología , Insuficiencia Renal Crónica/fisiopatología , Estudios Retrospectivos , Adulto Joven
5.
Molecules ; 23(4)2018 Mar 21.
Artículo en Inglés | MEDLINE | ID: mdl-29561787

RESUMEN

Coal is a major contributor to the global emission of nitrogen oxides (NOx). The NOx formation during coal utilization typically derives from the thermal decomposition of N-containing compounds (e.g., pyrrolic groups). NH3 and HCN are common precursors of NOx from the decomposition of N-containing compounds. The existence of H2O has significant influences on the pyrrole decomposition and NOx formation. In this study, the effects of H2O on pyrrole pyrolysis to form NOx precursors HCN and NH3 are investigated using the density functional theory (DFT) method. The calculation results indicate that the presence of H2O can lead to the formation of both NH3 and HCN during pyrrole pyrolysis, while only HCN is formed in the absence of H2O. The initial interaction between pyrrole and H2O determines the N products. NH3 will be formed when H2O attacks the C2 position of pyrrole with its hydroxyl group. On the contrary, HCN will be generated instead of NH3 when H2O attacks the C3 position of pyrrole with its hydroxyl group. In addition, the DFT calculations clearly indicate that the formation of NH3 will be promoted by H2O, whereas the formation of HCN is inhibited.


Asunto(s)
Amoníaco/química , Calor , Cianuro de Hidrógeno/química , Modelos Moleculares , Pirroles/química , Agua/química , Conformación Molecular
6.
Dis Esophagus ; 30(2): 1-6, 2017 Feb 01.
Artículo en Inglés | MEDLINE | ID: mdl-27868291

RESUMEN

Potential effects of genetic factors on carcinogenesis of gastric cardiac adenocarcinoma (GCA) may exist. The present experiment specifically evaluated the genetic influence of single nucleotide in methyl-CpG binding domain 4 (MBD4) on GCA tumorigenesis. A case-control experiment based on hospital recruited 330 GCA patients and 608 non-cancer patients was carried out. We employed ligation detection reaction method to detect the genotypes. The results revealed that MBD4 rs3138373, rs2005618, and rs3138355 mutations had no significant association with the risk of GCA. However, a lower risk of GCA presented in male patients who carried the MBD4 rs3138355 G>A polymorphic loci by the stratified analyses. In general, The MBD4 gene polymorphism could not influence GCA hereditary predisposition. Nevertheless, whether the finding learned from our experiment could apply to other ethnic groups will remain vague until future multicenter studies further test and verify our conclusions.


Asunto(s)
Adenocarcinoma/genética , Pueblo Asiatico/genética , Cardias , Endodesoxirribonucleasas/genética , Polimorfismo de Nucleótido Simple , Neoplasias Gástricas/genética , Adenocarcinoma/etnología , Anciano , Estudios de Casos y Controles , China , Femenino , Predisposición Genética a la Enfermedad/etnología , Humanos , Masculino , Persona de Mediana Edad , Factores de Riesgo , Factores Sexuales , Neoplasias Gástricas/etnología
7.
Int J Mol Sci ; 18(11)2017 Nov 09.
Artículo en Inglés | MEDLINE | ID: mdl-29120350

RESUMEN

In order to understand the pyrolysis mechanism of ß-O-4 type lignin dimers, a pyrolysis model is proposed which considers the effects of functional groups (hydroxyl, hydroxymethyl and methoxyl) on the alkyl side chain and aromatic ring. Furthermore, five specific ß-O-4 type lignin dimer model compounds are selected to investigate their integrated pyrolysis mechanism by density functional theory (DFT) methods, to further understand and verify the proposed pyrolysis model. The results indicate that a total of 11 pyrolysis mechanisms, including both concerted mechanisms and homolytic mechanisms, might occur for the initial pyrolysis of the ß-O-4 type lignin dimers. Concerted mechanisms are predominant as compared with homolytic mechanisms throughout unimolecular decomposition pathways. The competitiveness of the eleven pyrolysis mechanisms are revealed via different model compounds, and the proposed pyrolysis model is ranked in full consideration of functional groups effects. The proposed pyrolysis model can provide a theoretical basis to predict the reaction pathways and products during the pyrolysis process of ß-O-4 type lignin dimers.


Asunto(s)
Calor , Lignina/química , Derivados del Benceno/química , Alcohol Bencilo/química , Dimerización , Hidrógeno/química , Lignina/análogos & derivados , Éteres Fenílicos/química , Fenilalanina/análogos & derivados , Fenilalanina/química , Presión
8.
Protein Expr Purif ; 122: 1-7, 2016 06.
Artículo en Inglés | MEDLINE | ID: mdl-26826314

RESUMEN

Successfully recovering proinsulin's native conformation from inclusion body is the crucial step to guarantee high efficiency for insulin's manufacture. Here, two by-products of disulfide-linked oligomers and disulfide-isomerized monomers were clearly identified during proinsulin aspart's refolding through multiple analytic methods. Arginine and urea are both used to assist in proinsulin refolding, however the efficacy and possible mechanism was found to be different. The oligomers formed with urea were of larger size than with arginine. With the urea concentrations increasing from 2 M to 4 M, the content of oligomers decreased greatly, but simultaneously the refolding yield at the protein concentration of 0.5 mg/mL decreased from 40% to 30% due to the increase of disulfide-isomerized monomers. In contrast, with arginine concentrations increasing up to 1 M, the refolding yield gradually increased to 50% although the content for oligomers also decreased. Moreover, it was demonstrated that not redox pairs but only oxidant was necessary to facilitate the native disulfide bonds formation for the reduced denatured proinsulin. An oxidative agent of selenocystamine could increase the yield up to 80% in the presence of 0.5 M arginine. Further study demonstrated that refolding with 2 M urea instead of 0.5 M arginine could achieve similar yield as protein concentration is slightly reduced to 0.3 mg/mL. In this case, refolded proinsulin was directly purified through one-step of anionic exchange chromatography, with a recovery of 32% and purity up to 95%. All the results could be easily adopted in insulin's industrial manufacture for improving the production efficiency.


Asunto(s)
Arginina/química , Cistamina/análogos & derivados , Compuestos de Organoselenio/química , Proinsulina/química , Replegamiento Proteico , Urea/química , Animales , Tampones (Química) , Cistamina/química , Disulfuros/química , Escherichia coli/química , Escherichia coli/genética , Humanos , Cuerpos de Inclusión/química , Oxidación-Reducción , Proinsulina/genética , Proteínas Recombinantes/química , Proteínas Recombinantes/genética
9.
Molecules ; 19(12): 21335-49, 2014 Dec 18.
Artículo en Inglés | MEDLINE | ID: mdl-25529020

RESUMEN

The study focused on the structural sensitivity of lignin during the phosphoric acid-acetone pretreatment process and the resulting hydrolysis and phosphorylation reaction mechanisms using density functional theory calculations. The chemical stabilities of the seven most common linkages (ß-O-4, ß-ß, 4-O-5, ß-1, 5-5, α-O-4, and ß-5) of lignin in H3PO4, CH3COCH3, and H2O solutions were detected, which shows that α-O-4 linkage and ß-O-4 linkage tend to break during the phosphoric acid-acetone pretreatment process. Then α-O-4 phosphorylation and ß-O-4 phosphorylation follow a two-step reaction mechanism in the acid treatment step, respectively. However, since phosphorylation of α-O-4 is more energetically accessible than phosphorylation of ß-O-4 in phosphoric acid, the phosphorylation of α-O-4 could be controllably realized under certain operational conditions, which could tune the electron and hole transfer on the right side of ß-O-4 in the H2PO4- functionalized lignin. The results provide a fundamental understanding for process-controlled modification of lignin and the potential novel applications in lignin-based imprinted polymers, sensors, and molecular devices.


Asunto(s)
Acetona/química , Lignina/química , Ácidos Fosfóricos/química , Conformación de Carbohidratos , Hidrólisis , Modelos Químicos , Fosforilación , Teoría Cuántica , Soluciones , Termodinámica
10.
Sci Total Environ ; 912: 169347, 2024 Feb 20.
Artículo en Inglés | MEDLINE | ID: mdl-38104822

RESUMEN

Plastics account for a large proportion of domestic waste. However, micro-plastics will be produced after the plastic is incinerated. The purpose of this study is to find out the change rule of micro-plastics produced during incineration under different conditions. Combining micro-FTIR and PCA algorithm is a good tool to identify the micro-plastics. The PE, PP and PVC micro-plastics are distinguished using PCA-FTIR spectra. The results show different incineration conditions significantly affect the output of micro-plastics. The yield of micro-plastics increases with increasing temperature for both PP and PVC. And the yield of micro-plastics decreases with the increase in flow rate. The maximum amount of micro-plastics is produced by PE, which is 6.62 × 103 after 1 g PE incineration. The yield of micro-plastics in the co-incineration of PE and PP, as well as PE and PVC, significantly increased to 1.42 and 1.89 times of the calculated values, respectively. The nano-particles are also observed. The FTIR and EDS results show that the nano-particles are the products of incineration of plastics, including partly CH bond and unburned carbon, tar and ash.

11.
J Hazard Mater ; 469: 133971, 2024 May 05.
Artículo en Inglés | MEDLINE | ID: mdl-38471379

RESUMEN

Microplastics are recognized as a new environmental pollutant. Researchers have detected their presence in waste incineration ash. However, traditional testing methods take a very long testing period. There is a lack of research on detecting microplastics in waste incineration ash. In this paper, a portable near-infrared spectra (NIRS) spectrometer was used for qualitative discrimination and quantitative prediction of microplastics in ash. A total of 84 sets of simulated ash samples containing different types (PP, PS, PE, and PVC) and contents (2.4 wt% - 20 wt%) of microplastics were used in the model. The results show the qualitative discrimination model using support vector machines (SVM) method with multiplicative scatter correction (MSC) preprocessing could effectively identify the microplastic types in the ash with 100% detection accuracy. Furthermore, the partial least squares regression (PLSR) model was effective in quantitatively predicting the content of microplastics in ash. The Rp2 of the PP, PS, PE, and PVC models are 0.95, 0.93, 0.89, and 0.95, respectively. The RPD of the PP, PS, PE, and PVC models are 3.97, 3.96, 2.89 and 5.02, respectively. This study shows that microplastics in ash can be detected rapidly and accurately using portable near-infrared spectrometers.

12.
J Immunol Res ; 2022: 3351268, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35571569

RESUMEN

Background: Various natural compounds are effective in cancer prevention and treatment with fewer side effects than conventional radiotherapy and chemotherapy. Considering the uncertainty of the antitumor mechanism of Echinacoside (Ech) and the fact that no study on Ech against non-small cell lung cancer (NSCLC) has been explored previously, this study inquired into the anti-NSCLC effect of Ech and explored its potential mechanisms. Methods: The IC50 to Ech of the NSCLC cells was calculated based on a series of cell viability assays. Different concentrations of Ech were used to treat the cells; the proliferation activity of the cells was evaluated using EdU staining. Mitochondrial membrane potential was detected by JC-1 staining. Levels of cytokines IL-1ß and IL-18 were measured by ELISA. GSH and MDA levels were measured by microplate reader. Expression of cytochrome c, NLRP3, caspase-1, IL-1ß, c-Myc, c-Fos, and Raf/MEK/ERK pathway proteins was evaluated by western blot. Meanwhile, we used xenograft, immunohistochemical staining, and H&E staining to evaluate the pharmacological effects of Ech in mice in vivo. Results: ECH inhibited the proliferation of NSCLC cells. Ech increased the expression of pyroptosis-related proteins. Besides, Ech perturbed the mitochondrial membrane potential with the release of mitochondrial cytochrome c, accompanied by increased oxidative stress. Ech inhibited the phosphorylation levels of Raf/MEK/ERK signaling pathway and subsequently reduced c-myc and c-fos protein expression. In addition, Ech effectively restrained the growth of tumors in vivo. Conclusions: Ech inhibited the Raf/MEK/ERK signaling. Impaired mitochondria activated inflammasome, which in turn led to the pyroptosis of NSCLC cells. These findings can provide some ideas on how to use pyroptosis to treat NSCLC.


Asunto(s)
Carcinoma de Pulmón de Células no Pequeñas , Neoplasias Pulmonares , Animales , Carcinoma de Pulmón de Células no Pequeñas/patología , Citocromos c/metabolismo , Citocromos c/farmacología , Glicósidos , Humanos , Neoplasias Pulmonares/patología , Ratones , Mitocondrias/metabolismo , Quinasas de Proteína Quinasa Activadas por Mitógenos/metabolismo , Quinasas de Proteína Quinasa Activadas por Mitógenos/farmacología , Proteína con Dominio Pirina 3 de la Familia NLR/metabolismo , Piroptosis , Transducción de Señal
13.
Front Oncol ; 12: 992596, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-36324591

RESUMEN

Background: To evaluate the potential treatment for patients with non-small cell lung cancer (NSCLC) and rare malignant pulmonary lymphangitis carcinomatosis (PLC), our study provided a genomic profile and clinical outcome of this group of patients. Methods: We retrospectively reviewed patients with NSCLC who developed PLC. The genomic alterations, tumor mutation burden (TMB), and microsatellite instability (MSI) based on DNA-based next-generation sequencing were reviewed and compared in a Chinese population with lung adenocarcinomas (Chinese-LUAD cohort). Clinical outcomes after exploratory anlotinib treatment and factors influencing survival are summarized. Results: A total of 564 patients with stage IV NSCLC were reviewed, and 39 patients with PLC were included. Genomic profiling of 17 adenocarcinoma patients with PLC (PLC-LUAD cohort) revealed TP53, EGFR, and LRP1B as the three most frequently altered genes. EGFR was less mutated in PLC-LUAD than Chinese-LUAD cohort of 778 patients (35.3% vs. 60.9%, P = 0.043). BRIP1 was mutated more often in the PLC-LUAD cohort (11.8% vs. 1.8%, P= 0.043). Two patients presented with high tumor mutational burden (TMB-H, 10 mutations/MB). Combing alterations in the patient with squamous cell carcinoma, the most altered pathways of PLC included cell cycle/DNA damage, chromatin modification, the RTK/Ras/MAPK pathway and VEGF signaling changes. Fourteen of the participants received anlotinib treatment. The ORR and DCR were 57.1% and 92.9%, respectively. Patients achieved a median progression-free survival of 4.9 months and a median overall survival of 7 months. The adverse effects were manageable. In patients with adenocarcinoma, the mPFS (5.3 months vs. 2.6 months) and mOS (9.9 months vs. 4.5 months) were prolonged in patients receiving anlotinib treatment compared to those receiving other treatment strategies (P < 0.05). Conclusion: Patients with PLC in NSCLC demonstrated distinct genetic alterations. The results improve our understanding of the plausible genetic underpinnings of tumorigenesis in PLC and potential treatment strategies. Exploratory anlotinib treatment achieved considerable benefits and demonstrated manageable safety.

14.
ACS Omega ; 6(43): 29201-29214, 2021 Nov 02.
Artículo en Inglés | MEDLINE | ID: mdl-34746609

RESUMEN

A solid oxide fuel cell (SOFC) has wide stationary and mobile application prospects due to its high efficiency and fuel flexibility. The SOFC system's performance depends on the reforming option and system design. In this paper, we designed a novel SOFC auxiliary power unit (APU) system with ethanol on-board reforming aiming at vehicle application. The thermodynamic analysis is employed to evaluate the ethanol-fueled SOFC performance of different reforming options with a metal-supported SOFC working at 600 °C and a 0.3 A/cm2 current density. The electrical efficiency of the SOFC can reach a maximum of 50% with ethanol autothermal reforming. Under the optimal reforming option and operating conditions, the conceptual SOFC-APU system design is identified with the trade-off between system efficiency and ethanol flow from the startup and stable operation phase. The results show that the system efficiency of 44.4% can be achieved with a 0.42 g/s ethanol flow at the startup phase. During the stable operation, the electrical efficiency and exergy efficiency of the SOFC-APU system can reach 55.4 and 77.1% with a 70% anode gas recirculation ratio, respectively.

15.
Pathol Res Pract ; 227: 153626, 2021 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-34649053

RESUMEN

Choroideremia-like (CHML) has been demonstrated to be related to the development of urothelial carcinoma, multiple myeloma, and hepatocellular carcinoma. Whereas, the association between CHML and lung cancer remains dimness. CHML expression was analyzed in NSCLC patients from TCGA dataset and evaluated in our collected NSCLC tissues and NSCLC cell lines. The effects of CHML on the proliferation and apoptosis of NSCLC were investigated in A549 and H1299 cells that downregulation of CHML as well as in H1299-induced xenograft mouse model. An upstream miRNA of CHML was further analyzed. Moreover, bioinformatics analysis and co-immunoprecipitation assay were carried out to explore the mechanism of CHML in NSCLC. We found CHML expression was upregulated in NSCLC patients and cell lines compared with their controls. Knockdown of CHML suppressed the viability and BrdU-positive cell number, and elevated the proportion of Tunel-positive cells and levels of Bax/Bcl-2 and cleaved-caspase-3 in NSCLC cells. In mouse models, downregulation of CHML decreased tumor volume and weight, attenuated Ki-67 staining, whereas elevated numbers of Tunel-positive cells, and upregulated levels of Bax/Bcl-2 and cleaved-caspase-3. CHML was demonstrated to be a target of miR-199a-3p. miR-199a-3p inhibitor significantly promoted the proliferation, and attenuated the apoptosis of H1299 cells, which were abrogated by CHML silencing. CHML promoted the proliferation of NSCLC cells via directly binding to Rab5A. Taken together, this study revealed that CHML was an oncogene in NSCLC and it could promote the proliferation and inhibit apoptosis of NSCLC cells through binding to Rab5A. CHML was targeted by miR-199a-3p in this cancer.


Asunto(s)
Proteínas Adaptadoras Transductoras de Señales/metabolismo , Apoptosis , Carcinoma de Pulmón de Células no Pequeñas/metabolismo , Proliferación Celular , Neoplasias Pulmonares/metabolismo , MicroARNs/metabolismo , Proteínas de Unión al GTP rab5/metabolismo , Células A549 , Proteínas Adaptadoras Transductoras de Señales/genética , Adulto , Anciano , Animales , Proteínas Reguladoras de la Apoptosis/metabolismo , Carcinoma de Pulmón de Células no Pequeñas/genética , Carcinoma de Pulmón de Células no Pequeñas/patología , Bases de Datos Genéticas , Femenino , Regulación Neoplásica de la Expresión Génica , Humanos , Mutación con Pérdida de Función , Neoplasias Pulmonares/genética , Neoplasias Pulmonares/patología , Masculino , Ratones Endogámicos BALB C , Ratones Desnudos , MicroARNs/genética , Persona de Mediana Edad , Unión Proteica , Transducción de Señal , Carga Tumoral
16.
Bioengineered ; 12(1): 5932-5949, 2021 12.
Artículo en Inglés | MEDLINE | ID: mdl-34488540

RESUMEN

Lung adenocarcinoma (LUAD) has been the major cause of tumor-associated mortality in recent years and has a poor prognosis. Pyroptosis is regulated via the activation of inflammasomes and participates in tumorigenesis. However, the effects of pyroptosis-related lncRNAs (PRlncRNAs) on LUAD have not yet been completely elucidated. Therefore, we attempted to systematically explore patterns of cell pyroptosis to establish a novel signature for predicting LUAD survival. Based on TCGA database, we set up a prognostic model by incorporating PRlncRNAs with differential expression using Cox regression and LASSO regression. Kaplan-Meier analysis was conducted to compare the survival of LUAD patients. We further simplified the risk model and created a nomogram to enhance the prediction of LUAD prognosis. Altogether, 84 PRlncRNAs with differential expression were discovered. Subsequently, a new risk model was constructed based on five PRlncRNAs, GSEC, FAM83A-AS1, AL606489.1, AL034397.3 and AC010980.2. The proposed signature exhibited good performance in prognostic prediction and was related to immunocyte infiltration. The nomogram exactly forecasted the overall survival of patients and had excellent clinical utility. In the present study, the five-lncRNA prognostic risk signature and nomogram are trustworthy and effective indicators for predicting the prognosis of LUAD.


Asunto(s)
Adenocarcinoma del Pulmón , Neoplasias Pulmonares , Piroptosis/genética , ARN Largo no Codificante/genética , Adenocarcinoma del Pulmón/diagnóstico , Adenocarcinoma del Pulmón/genética , Adenocarcinoma del Pulmón/metabolismo , Adenocarcinoma del Pulmón/mortalidad , Anciano , Línea Celular Tumoral , Biología Computacional , Bases de Datos Genéticas , Femenino , Humanos , Neoplasias Pulmonares/diagnóstico , Neoplasias Pulmonares/genética , Neoplasias Pulmonares/metabolismo , Neoplasias Pulmonares/mortalidad , Masculino , Persona de Mediana Edad , Pronóstico , ARN Largo no Codificante/metabolismo , Transcriptoma/genética
17.
Biotechnol Lett ; 32(2): 289-94, 2010 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-19838630

RESUMEN

Excretion of 1,3-propanediol (1,3-PD) by K. pneumoniae was compared in ammonium- and phosphate-limited chemostat cultures running with an excess of glycerol. 59 and 43% catabolic flux were directed to 1,3-PD in ammonia-limited cultures and phosphate-limited cultures at dilution rate of 0.1 h(-1), respectively. Ammonia-limited fed-batch cultures produced 61 g 1,3-PD l(-1) and a total of 15 g l(-1) organic acid in 36 h. However, phosphate-limited fed-batch cultures excreted 61 g lactate l(-1) and 44 g 1,3-PD l(-1).


Asunto(s)
Reactores Biológicos/microbiología , Klebsiella pneumoniae/metabolismo , Modelos Biológicos , Fosfatos/metabolismo , Glicoles de Propileno/metabolismo , Compuestos de Amonio Cuaternario/metabolismo , Técnicas de Cultivo de Célula/métodos , Simulación por Computador
18.
Eur J Pharmacol ; 879: 173122, 2020 Jul 15.
Artículo en Inglés | MEDLINE | ID: mdl-32333927

RESUMEN

The characteristic features of diabetic nephropathy include thickening of the glomerular basement membranes, expansion of mesangium, and appearance of albumin in the urine (microalbuminuria and macroalbuminuria). Experimental studies have documented that 12-lipoxygenase (12-LOX) and its metabolite 12(S)-hydroxyeicosatetraenoic acid (HETE) play an important role in the pathogenesis of diabetic nephropathy. 12(S)-HETE may work in association with angiotensin II and transforming growth factor- ß (TGF-ß) reciprocally to induce fibrotic changes in the diabetic kidneys. The fibrotic actions of angiotensin II on the kidneys are mediated indirectly through an increase in the synthesis of 12(S)-HETE. Conversely, 12(S)-HETE may also enhance the actions of angiotensin II by upregulating the expression of AT1 receptors on the glomerulus, mesangium, and podocytes. 12(S)-HETE may also cross-talk with TGF-ß in a reciprocal manner to induce the fibrotic changes in the diabetic kidney. 12(S)-HETE-triggered signaling pathways may involve activation of p38 mitogen-activated protein (p38MAP) kinase, increase in cAMP-responsive element-binding protein (CREB) transcriptional activity, epigenetic changes involving histone methylation through an increase in histone methyltransferase activity along with an upregulation of cyclin-kinase inhibitors including, p16, p21, and p27. The present review discusses the role of 12-LOX in the pathogenesis of diabetic nephropathy along with the possible mechanisms.


Asunto(s)
Araquidonato 12-Lipooxigenasa/metabolismo , Nefropatías Diabéticas/metabolismo , Ácido 12-Hidroxi-5,8,10,14-Eicosatetraenoico/metabolismo , Albuminuria/metabolismo , Angiotensina II/metabolismo , Animales , Inhibidor p21 de las Quinasas Dependientes de la Ciclina/metabolismo , Inhibidor p27 de las Quinasas Dependientes de la Ciclina/metabolismo , Nefropatías Diabéticas/genética , Epigénesis Genética , Epoprostenol/metabolismo , Humanos
19.
Diabetol Metab Syndr ; 12: 39, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32411303

RESUMEN

BACKGROUND: LncRNA HAND2-AS1 has been reported to be a tumor suppressor in several types of malignancy, while its involvement in other human diseases is unclear. Our preliminary RNA-seq analysis revealed the downregulation of lncRNA HAND2-AS1 in diabetic patients with chronic renal failure, indicating the involvement of lncRNA HAND2-AS1 in this disease. This study was therefore carried out to explore the role of lncRNA HAND2-AS1 in the development of chronic renal failure in diabetic patients. METHODS: Mouse podocyte cells and plasma samples of diabetic patients (46 diabetic patients with chronic renal failure, 38 diabetic patients without obvious complications and 42 healthy volunteers) were used in this study. Cell apoptosis assay and PCR were performed. RESULTS: LncRNA HAND2-AS1 was downregulated in diabetic patients with chronic renal failure but not in diabetic patients without obvious complications. Downregulation of lncRNA HAND2-AS1 distinguished diabetic patients with chronic renal failure from diabetic patients and healthy controls. High glucose environment did not affect the expression of lncRNA HAND2-AS1 in mouse podocyte cells. Overexpression of lncRNA HAND2-AS1 inhibited the apoptosis of mouse podocyte cells under high glucose treatment. CONCLUSIONS: We therefore conclude that lncRNA HAND2-AS1 may participate in the development of chronic renal failure in diabetic patients by regulating cell apoptosis.

20.
ACS Omega ; 5(38): 24403-24411, 2020 Sep 29.
Artículo en Inglés | MEDLINE | ID: mdl-33015456

RESUMEN

The chemical looping gasification (CLG) process is a promising pathway to produce hydrogen-enriched syngas with biomass. It is urgent to enhance the reactivity and thermal stability of oxygen carriers (OC) and capture the inherently separated CO2. This work presents the strategy of simultaneous modification of a Fe2O3/Al2O3 oxygen carrier and the supplement of an oxidant for corn stalk chemical looping gasification by introducing KNO3-containing ethanol liquid waste. CaO is employed to capture the generated CO2 and promote the reaction balance toward hydrogen production in a fuel reactor (FR). The highest carbon conversion reaction rate of 1.1 × 10-4 mol/g could be obtained at the ratio of CaO to fuel carbon and the reaction temperature of 1.5 and 600 °C, respectively. The kinetics and thermodynamics analyses under the optimized condition are further discussed to verify the possibility and high efficiency of using alkaline organic liquid waste to boost solid fuel gasification for hydrogen production. This CLG strategy shows multifunctional merits, including organic liquid waste treatment, biomass CLG promotion, and hydrogen production enhancement.

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