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1.
Nano Lett ; 24(6): 2003-2010, 2024 Feb 14.
Artículo en Inglés | MEDLINE | ID: mdl-38306120

RESUMEN

Heat-assisted magnetic anisotropy engineering has been successfully used in selective magnetic writing and microwave amplification due to a large interfacial thermal resistance between the MgO barrier and the adjacent ferromagnetic layers. However, in spin-orbit torque devices, the writing current does not flow through the tunnel barrier, resulting in a negligible heating effect due to efficient heat dissipation. Here, we report a dramatically reduced switching current density of ∼2.59 MA/cm2 in flexible spin-orbit torque heterostructures, indicating a 98% decrease in writing energy consumption compared with that on a silicon substrate. The reduced driving current density is enabled by the dramatically decreased magnetic anisotropy due to Joule dissipation and the lower thermal conductivity of the flexible substrate. The large magnetic anisotropy could be fully recovered after the impulse, indicating retained high stability. These results pave the way for flexible spintronics with the otherwise incompatible advantages of low power consumption and high stability.

2.
Small ; 20(8): e2306159, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-37840442

RESUMEN

2D metal-organic frameworks (2D MOFs) with π conjugation have attracted widespread attention in the field of lithium storage due to their unique electron transfer units and structural characteristics. However, the periodic 2D planar extension structure hides some active sites, which is not conducive to the utilization of its structural advantages. In this work, a series of triptycene-based 2D conductive MOFs (M-DBH, M = Ni, Mn, and Co) with 3D extension structures are constructed by coordinating 9,10-dihydro-9,10-[1,2]benzenoanthracene-2,3,6,7,14,15-hexaol with metal ions to explore their potential applications in lithium-ion and lithium-sulfur batteries. This is the first study in which 2D conductive MOFs with the 3D extended molecule are used as electrode materials for lithium storage. The designed material generates rich active sites through staggered stacking layers and shows excellent performance in lithium-ion and lithium-sulfur batteries. The capacity retention rate of Ni-DBH can reach over 70% after 500 cycles at 0.2 C in lithium-ion batteries, while the capacity of S@Mn-DBH exceeds 305 mAh g-1 after 480 cycles at 0.5 C in lithium-sulfur batteries. Compared with the materials with 2D planar extended structures, the M-DBH electrodes with 3D extended structures in this work exhibit better performance in terms of cycle time and lithium storage capacity.

3.
Angew Chem Int Ed Engl ; 63(22): e202402886, 2024 May 27.
Artículo en Inglés | MEDLINE | ID: mdl-38526333

RESUMEN

A novel one-pot deracemization method using a bifunctional chiral agent (BCA) is proposed for the first time to convert a racemate to the desired enantiomer. Specifically, chiral α, (α-diphenyl-2-pyrrolidinemethanol) formed enantiospecific cocrystals with racemic dihydromyricetin, and used its own alkaline catalysis to catalyze the racemization between the (2R,3R)-enantiomer and (2S,3S)-enantiomer in solution, achieving a one-pot spontaneous deracemization. This strategy was also successfully extended to the deracemization of three other racemic compound drugs: (R,S)-carprofen, (R,S)-indoprofen, and (R,S)-indobufen. The one-pot deracemization method based on the BCA strategy provides a feasible approach to address the incompatibility between cocrystallization and racemization reactions that are commonly encountered in the cocrystallization-induced deracemization process and opens a new window to develop essential enantiomerically pure pharmaceutical products with atom economy.

4.
Small ; 19(36): e2206919, 2023 09.
Artículo en Inglés | MEDLINE | ID: mdl-37183293

RESUMEN

The regeneration of diabetic bone defects remains challenging. Hyperglycemia causes inflammation state and excessive reactive oxygen species (ROS) during bone regeneration period. These two effects reinforce one another and create an endless loop that is also accompanied by mitochondrial dysfunction. However, there is still no effective and inclusive method targeting at the two aspects and breaking the vicious cycle. Herein, nanoparticles-Met@ZIF-8(metformin loaded zeolitic imidazolate frameworks) modified hydrogel that is capable of releasing metformin and Zn elements are constructed. This hydrogel treats hyperglycemia while also controlling mitochondrial function, reducing inflammation, and restoring homeostasis. In addition, the synergetic effect from metformin and Zn ions inhibits ROS-inflammation cascade generation and destroys the continuous progress by taking effects in both ROS and inflammation and further keeping organelles' homeostasis. Furthermore, with the recovery of mitochondria and breakdown of the ROS-inflammation cascade cycle, osteogenesis under a diabetic microenvironment is enhanced in vivo and in vitro. In conclusion, the study provides critical insight into the biological mechanism and potential therapy for diabetic bone regeneration.


Asunto(s)
Diabetes Mellitus , Hiperglucemia , Estructuras Metalorgánicas , Humanos , Especies Reactivas de Oxígeno/metabolismo , Hidrogeles
5.
J Cell Mol Med ; 26(6): 1785-1798, 2022 03.
Artículo en Inglés | MEDLINE | ID: mdl-33277969

RESUMEN

Circular RNAs (circRNAs) are a class of single-stranded RNAs with closed loop structures formed by covalent bonds of head and tail. Exploration of circRNAs is continually increasing; however, their functional relevance largely remains to be elucidated. In general, they are stable, abundant, conserved and expressed in tissue-specific manner. These distinct properties and their diverse cellular actions indicate that circRNAs modulate transcription and translation, and may even function as translation templates. Growing evidence reveals that circRNAs contribute to various physiological and pathological processes, including the initiation and progression of cancer. In this review, we present the current knowledge about circRNAs in cancer development, as well as their potential for use as biomarkers and even therapeutic targets. CircRNA's role in immune regulation and antitumour immunotherapy is also discussed. In addition, possible challenges in antitumour therapy are raised, and current progress and future perspectives are provided.


Asunto(s)
Neoplasias , ARN Circular , Biomarcadores , Humanos , Inmunoterapia , Neoplasias/genética , Neoplasias/patología , Neoplasias/terapia , ARN/genética , ARN Circular/genética
6.
Biochem Biophys Res Commun ; 534: 727-733, 2021 01 01.
Artículo en Inglés | MEDLINE | ID: mdl-33190828

RESUMEN

Osteoporosis is a common skeletal complication of diabetes mellitus (DM). The mechanisms underlying the pathophysiology of diabetic osteoporosis are complex. Glycogen synthase kinase-3ß (GSK-3ß) is a widely expressed serine/threonine kinase and associated with both DM and bone metabolism, which arouse our concern. In this study, we established the diabetic mouse model by high-fat diet combined with streptozotocin injection. Decreased bone mass and reduced osteogenesis were observed in femurs of the mice. Besides, we identified that there is an activated expression of GSK3ß in the bone marrow mesenchymal stem cells (BMSCs) of diabetic mice. To explore the link between GSK3ß and diabetic osteoporosis, we exposed BMSCs to a high glucose microenvironment in vitro and discovered that the glucose-induced GSK3ß activation has negative osteogenic effects on BMSCs by suppressing ß-catenin/Tcf7/Ccn4 signaling axis. Inhibition of GSK3ß by specific concentrations of LiCl could reverse the impaired osteogenesis of BMSCs and increase expression of ß-catenin, Tcf7 and Ccn4. Our research indicated that abnormal activation of GSK3ß plays a role in diabetic osteoporosis and might be a potential target to treat diabetic osteoporosis.


Asunto(s)
Diabetes Mellitus Experimental/fisiopatología , Glucosa/metabolismo , Glucógeno Sintasa Quinasa 3 beta/metabolismo , Células Madre Mesenquimatosas/metabolismo , Osteogénesis/fisiología , Animales , Proteínas CCN de Señalización Intercelular/genética , Proteínas CCN de Señalización Intercelular/metabolismo , Diabetes Mellitus Experimental/complicaciones , Diabetes Mellitus Experimental/metabolismo , Dieta Alta en Grasa/efectos adversos , Activación Enzimática , Fémur/patología , Fémur/ultraestructura , Factor Nuclear 1-alfa del Hepatocito/genética , Factor Nuclear 1-alfa del Hepatocito/metabolismo , Masculino , Ratones Endogámicos C57BL , Proteínas Proto-Oncogénicas/genética , Proteínas Proto-Oncogénicas/metabolismo , Transducción de Señal , Estreptozocina , beta Catenina/genética , beta Catenina/metabolismo
7.
Inorg Chem ; 60(24): 19044-19052, 2021 Dec 20.
Artículo en Inglés | MEDLINE | ID: mdl-34855389

RESUMEN

Structural delamination of bulk layered metal-organic frameworks (MOFs) remains a great challenge, largely owing to a lack of general synthetic strategies. Here, we reported a simple solvent-free intercalation strategy for the delamination of rare-earth-based MOF (RE-MOF) with a topology structure of MIL-78 by tuning the chain length of quaternary ammonium salts. Four types of quaternary ammonium salts, involving tetraethylammonium bromide (TEAB), tetrapropylammonium bromide (TPAB), tetrabutylammonium bromide (TBAB), and hexadecyl trimethyl ammonium bromide (CTAB) were introduced to investigate their intercalation capabilities. It is evident in our case that the interruption/intercalation behavior of quaternary ammonium salts differs with their steric structures, and the chain-like CTAB can induce obvious delamination of MIL-78 crystals. Particularly, the CTAB-intercalated ultrathin Eu-based MIL-78 nanosheets exhibited unique selective photoelectrochemical sensing property toward trace amounts of Fe3+ ions in aqueous solution with a detection limit of 0.0899 µM at a signal-to-noise ratio of 3. These results demonstrated a green bottom-up strategy to obtain high-quality RE-MOF nanosheets for potential photocurrent response applications.

8.
Environ Res ; 195: 110858, 2021 04.
Artículo en Inglés | MEDLINE | ID: mdl-33607092

RESUMEN

In recent years, tire wear particles (TWP), as the significant proportion of microplastics (MPs), has adsorbed much attention due to its widespread presence in aquatic ecosystem. Compared with typical MPs, TWP exists significant differences in composition, additives, characteristics and so on. With TWP and polypropylene (PP) as target MPs, Cd2+ and Pb2+ as target pollutants, the adsorption-desorption characteristics of heavy metal ions on original and aged MPs were studied. Compare with the PP, the SBET of TWP increased more significantly after the UV ageing process. Meanwhile, the zeta potential of TWP increased from -8.01 to -14.6 mV and PP from -5.36 to -9.52 mV, and the surface of the TWP were more negatively-charged. In addition, the hydrophilicity of MPs enhanced due to the increased oxygen-containing functional groups after ageing process. Compared with PP, the physicochemical properties of TWP changed more obviously during UV ageing processes. The adsorption results showed that the pseudo-second-order model could better describe the adsorption processes of Cd2+ and Pb2+ on MPs. Meanwhile, the orders of adsorption capacity of MPs for Cd2+ and Pb2+ were aged TWP > aged PP > original TWP > original PP. The phenomenon of adsorption confirmed that TWP had better vector effects for heavy metal ions than PP, and the ageing processes could enhance the adsorption capacity of MPs. Moreover, the desorption results demonstrated that, compared with PP, the TWP (with higher adsorption capacity) also had the better desorption capacity for heavy metal ions in simulated gastric fluid. Compared with PP, the TWP might cause a more serious hazard to aquatic environment and organisms. These investigations would contribute to assessing the potential environmental and biological risk of TWP, especially considering the effect of the ageing process.


Asunto(s)
Metales Pesados , Contaminantes Químicos del Agua , Adsorción , Ecosistema , Plásticos , Contaminantes Químicos del Agua/análisis
9.
Water Sci Technol ; 83(3): 739-750, 2021 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-33600376

RESUMEN

Application of sewage sludge biochar as an adsorbent for antibiotics treatment has obtained special attention owning to its low cost and surface functionality. Three metal ions were selected to modify sewage sludge biochar through the pyrolysis with the metal loaded method. Fe loaded sewage sludge biochar (BC-Fe), Al loaded sewage sludge biochar (BC-Al) and Mn loaded sewage sludge biochar (BC-Mn) were characterized and used to explore the performance of adsorbing tetracycline (TC), sulfamethoxazole (SMZ) and amoxicillin (AMC). BC-Fe, BC-Al and BC-Mn possessed rougher surfaces, larger specific surface area and better pore structure. Intra-particle diffusion and Langmuir models were more suitable to describe the adsorption process. The maximum adsorption amount of TC, SMZ and AMC could reach 123.35, 99.01 and 109.89 mg/g by BC-Fe. Furthermore, the main mechanism of antibiotics adsorption by metal loaded sewage sludge biochars might be pores filling, Van der Waals forces and H-bonding. The study can not only solve the problems associated with the pollution of antibiotics from wastewater, but also reduced the treatment pressure of sewage sludge effectively.


Asunto(s)
Antibacterianos , Aguas del Alcantarillado , Adsorción , Carbón Orgánico , Agua
10.
Water Sci Technol ; 83(6): 1429-1445, 2021 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-33767048

RESUMEN

Application of sewage sludge biochar as an adsorbent for pollutant removal has obtained special attention due to their low cost and surface functionality. In this research, sludge-tire composite biochar (STB) was successfully prepared through co-pyrolysis at 300, 500 and 700 °C, respectively. Cadmium (Cd) and tetracycline (TC) were selected as the target pollutant. The results indicated that STB has the highest surface area (49.71 m2/g), more inorganic minerals (Kaolinite) as well as relatively stable physicochemical properties with 10% tire particles (TP) at 700 °C. The adsorption results indicated that the pseudo-second-order equation and Langmuir isotherm model could better describe the adsorption of Cd2+ and TC by STB. The maximum adsorption capacity of Cd2+ and TC was 50.25 mg/g and 90.09 mg/g, respectively. The main mechanism of the adsorption process of STB for Cd mainly involves anion binding adsorption and ion exchange. The main mechanism of the adsorption process of STB for TC mainly involves complexation and cation exchange. The present study could set a scientific foundation for further research on the recycle of sewage sludge and tires.


Asunto(s)
Pirólisis , Contaminantes Químicos del Agua , Adsorción , Cadmio , Carbón Orgánico , Cinética , Aguas del Alcantarillado , Agua
11.
Inorg Chem ; 59(19): 14318-14325, 2020 Oct 05.
Artículo en Inglés | MEDLINE | ID: mdl-32924454

RESUMEN

Controlled synthesis of rare-earth metal-organic frameworks (RE-MOFs) is of great significance to match their emerging multifunctional luminescence applications. Herein, we propose a green and general solvent-free synthetic strategy for the adjustment of morphology and dimension of various RE-MOFs (RE = Eu, Tb, Er, Dy, Y, Tm) by using a tetraethylammonium bromide-assisted thermal-heating method. These self-assembled RE-MOF materials possess controllable morphologies and hierarchical structures while retaining the structural topology of MIL-78, proving that the strategy is a feasible and effective way in opening up large-scale synthesis of RE-MOFs. It is further found that the tetraethylammonium could be carbonized into carbon dots and encapsulated in Eu/Tb-MIL-78 to enhance the fluorescence emission intensities significantly, making the hierarchical Eu/Tb-MIL-78 MOF materials good candidates for the latent fingerprints recognition application. This work provides a novel strategy for effectively controlling the morphology and dimension of RE-MOFs materials with enhanced photoluminescence and has great potential in their scaling-up syntheses and exploring the new luminescence applications.

12.
Mikrochim Acta ; 187(7): 369, 2020 06 05.
Artículo en Inglés | MEDLINE | ID: mdl-32504354

RESUMEN

A sheet-like carbon dot-embedded Ag@EuWO4(OH) luminescent nanoprobe was successfully developed for assaying hydrogen peroxide. Firstly, the carbon dot-embedded EuWO4(OH) nanosheets were prepared in a Eu(NO3)3·6H2O-(NH4)10H2(W2O7)6·xH2O-CS(NH2)2 hydrothermal synthetic system. Subsequently, the carbon dot-embedded EuWO4(OH) was functionalized by Ag nanoparticles using an in situ photochemical deposition strategy upon ultraviolet light irradiation. Taking advantage of the dual emissions of the luminescence from carbon dots and characteristic red transitions of Eu3+ ions in the integrated system, the carbon dot-embedded Ag@EuWO4(OH) luminescent composites exhibit ratiometric fluorescence responsive activity towards hydrogen peroxide. The luminescent intensity ratio of Eu3+ (614 nm) to carbon dots (389 nm) shows a polynomial function with changing hydrogen peroxide concentration. The corresponding detection limit is 60 µM at a signal-to-noise ratio of 3 (S/N = 3) implying the potential use of the carbon dot-embedded Ag@EuWO4(OH) as nanoprobe. The method was applied to the quantification of H2O2 in real samples with satisfactory results. Graphical abstract A carbon dot-embedded Ag@EuWO4(OH) luminescence ratiometric probe was successfully prepared through hydrothermal method and in situ photochemical deposition strategy. The luminescence intensity ratio of Eu3+ to carbon dots shows synergistic luminescence response activity towards H2O2 with detection limit of 60 µM.

13.
J Craniofac Surg ; 31(4): 1030-1033, 2020 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-32118662

RESUMEN

OBJECTIVE: To compare and analyze the efficacy and safety of traditional craniotomy and small bone window craniotomy in the treatment of hypertensive cerebral hemorrhage (HICH). PATIENTS AND METHODS: Fifty-four patients with HICH treated with traditional craniotomy and small bone window craniotomy were retrospectively analyzed. The operation time, hospitalization time, preoperative, and postoperative CT analysis, Glasgow coma scale (GCS) score and Glasgow outcome scale (GOS) scores were analyzed. RESULTS: There were no significant differences in gender, age, hematoma volume, GCS score and pre-operative time between the 2 groups (P > 0.05). The operation time and hospitalization time of the micro-bone window group were shorter than those of the traditional operation group (P < 0.05). The GCS and GOS scores of the small bone window group after 3 days and 6 months were higher than those of the traditional operation group (P < 0.05). However, there was no significant difference in hematoma clearance rate, re-bleeding rate and infection rate between the two groups (P > 0.05). CONCLUSION: For patients with GCS 8-12 HICH, micro-bone window not only has the same effect as traditional bone window, but also has the advantages of shorter operation time and less trauma.


Asunto(s)
Hemorragia Intracraneal Hipertensiva/cirugía , Microcirugia , Anciano , Craneotomía , Femenino , Escala de Coma de Glasgow , Escala de Consecuencias de Glasgow , Hospitalización , Humanos , Masculino , Persona de Mediana Edad , Tempo Operativo , Estudios Retrospectivos , Resultado del Tratamiento
14.
J Craniofac Surg ; 30(7): 2239-2244, 2019 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-31503116

RESUMEN

BACKGROUND: A skull fracture widely occurs in patients with traumatic brain injury, leading to intracranial hematoma, brain contusion, and intracranial infection. It also influences the prognosis and death of patients. This study aimed to discuss cases of patients with comminuted skull fractures. METHODS: From October 2015 to December 2018, 38 patients with comminuted skull fractures were admitted to the hospital. All patients underwent three-dimensional reconstruction of computed tomography scan images. Digital subtraction angiography or magnetic resonance venography was performed to find out the venous sinus. The clinical findings of the patients were significant regarding gender, age, injury mechanism, location, admission Glasgow Coma Scale (GCS), combined epidural, subdural, cerebral contusion, intracranial pneumatosis, maximum depth of depression, admission to surgery, dural tear, post-operative cerebrospinal fluid leakage, post-operative infection, and Glasgow Outcome Scale (GOS) 3 months after surgery. RESULTS: The incidence of traffic accidents, fall from a height, railway accidents, fall of an object, and chop injury was 60.5%, 18.4%, 13.2%, 5.3%, and 2.6%, respectively. Intra-operative dural trar negatively correlated with epidural hematoma, cerebral contusion, and subdural hematoma. Also, post-operative infection negatively correlated with intracranial pneumatosis, depth of fracture depression, and pre-operative cerebrospinal fluid leakage. No correlation was found between contusion, subdural hematoma, intracranial pneumatosis, depth of fracture depression, and post-operative infection. The GOS score positively correlated with age, pre-operative cerebrospinal fluid leakage, and admission GCS score. CONCLUSIONS: A perfect pre-operative examination is a key to successful surgery. Further studies should be conducted to find out more effective treatments for traumatic comminuted skull fractures.


Asunto(s)
Fractura Craneal Deprimida/cirugía , Adulto , Anciano , Anciano de 80 o más Años , Pérdida de Líquido Cefalorraquídeo/etiología , Contusiones , Femenino , Escala de Coma de Glasgow , Humanos , Masculino , Persona de Mediana Edad , Fractura Craneal Deprimida/complicaciones , Fractura Craneal Deprimida/diagnóstico por imagen , Tomografía Computarizada por Rayos X , Resultado del Tratamiento , Adulto Joven
15.
Am J Orthod Dentofacial Orthop ; 155(6): 801-811, 2019 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-31153500

RESUMEN

INTRODUCTION: The purpose of this study was to evaluate the therapeutic effect of a hybrid treatment for hemifacial microsomia that combines distraction osteogenesis and a mandible-guided functional appliance to correct mandibular asymmetry. METHODS: This was a retrospective analysis of 10 patients with unilateral hemifacial microsomia who underwent mandibular ramus distraction osteogenesis in our hospital from February 2013 to July 2015. The cases were classified into 2 comparison groups: 5 patients were in the MG-DO group (distraction osteogenesis combined with an mandible-guided functional appliance) and 5 in the control group (distraction osteogenesis only). Anteroposterior cephalometric analyses were conducted before and after treatment. Soft tissue symmetry and the occlusal relationship were observed from facial and intraoral photographs. Statistical analyses were performed to determine changes between before and after treatment as well as intergroup differences. RESULTS: The MG-DO group showed greater vertical elongation of the mandibular ramus and less overcorrection and mandibular deviation than the control group. Occlusal reconstruction was enabled by the mandible-guided functional appliance owing to a decrease in lateral shifting. The symmetry of both skeletal and soft tissues was significantly improved in the MG-DO group. CONCLUSIONS: The hybrid technique combining distraction osteogenesis and the mandible-guided functional appliance proved to be effective in correcting canting and deviation during mandibular elongation, which improved facial symmetry and occlusal balance in patients with hemifacial microsomia.


Asunto(s)
Síndrome de Goldenhar/terapia , Aparatos Ortodóncicos Funcionales , Osteogénesis por Distracción/métodos , Cefalometría , Niño , Terapia Combinada , Femenino , Humanos , Masculino , Estudios Retrospectivos , Resultado del Tratamiento
16.
Cytotherapy ; 20(1): 74-86, 2018 01.
Artículo en Inglés | MEDLINE | ID: mdl-29050915

RESUMEN

BACKGROUND AIMS: Retinal progenitor cells (RPCs) are a promising cell therapy treatment for retinal degenerative diseases. However, problems with limited proliferation ability and differentiation preference toward glia rather than neurons restrict the clinical application of these RPCs. The extracellular matrix (ECM) has been recognized to provide an appropriate microenvironment to support stem cell adhesion and direct cell behaviors, such as self-renewal and differentiation. METHODS: In this study, decellularized matrix of adipose-derived mesenchymal stromal cells (DMA) was manufactured using a chemical agent method (0.5% ammonium hydroxide Triton + 20 mmol/L NH4OH) in combination with a biological agent method (DNase solution), and the resulting DMA were evaluated by scanning electron microscopy (SEM) and immunocytochemistry. The effect of DMA on RPC proliferation and differentiation was evaluated by quantitative polymerase chain reaction, Western blot and immunocytochemistry analysis. RESULTS: DMA was successfully fabricated, as demonstrated by SEM and immunocytochemistry. Compared with tissue culture plates, DMA may effectively enhance the proliferation of RPCs by activating Akt and Erk phosphorylation; when the two pathways were blocked, the promoting effect was reversed. Moreover, DMA promoted the differentiation of RPCs toward retinal neurons, especially rhodopsin- and recoverin-positive photoreceptors, which is the most interesting class of cells for retinal degeneration treatment. CONCLUSIONS: These results indicate that DMA has important roles in governing RPC proliferation and differentiation and may contribute to the application of RPCs in treating retinal degenerative diseases.


Asunto(s)
Tejido Adiposo/citología , Diferenciación Celular , Matriz Extracelular/metabolismo , Sistema de Señalización de MAP Quinasas , Células Madre Mesenquimatosas/metabolismo , Neuronas/citología , Proteínas Proto-Oncogénicas c-akt/metabolismo , Retina/citología , Adolescente , Adulto , Animales , Diferenciación Celular/efectos de los fármacos , Proliferación Celular/efectos de los fármacos , Separación Celular , Células Cultivadas , Femenino , Humanos , Ratones Endogámicos C57BL , Adulto Joven
17.
Med Sci Monit ; 24: 5363-5367, 2018 Aug 02.
Artículo en Inglés | MEDLINE | ID: mdl-30068901

RESUMEN

BACKGROUND The aim of this research was to investigate the treatment effect of naloxone combined with hemodialysis on acute severe alcoholism. MATERIAL AND METHODS We included 36 patients treated with naloxone combined with hemodialysis in Group I and 34 patients treated with naloxone without hemodialysis in Group II. The Glasgow coma scale (GCS) score, the consciousness recovery time, alanine amino transferase (ALT) level, and complications were analyzed. RESULTS Mean GCS score in Group I was higher than that in Group II, with a significant difference (P<0.05). The consciousness recovery time in Groups I and II were 3.0±0.8 h and 6.9±2.1 h, respectively, with a significant difference (P<0.05). After naloxone treatment and hemodialysis, the ALT level in Group I was lower than that in Group II (P<0.05). Moreover, the incidence of hepatic and renal function damages in Group I was smaller than that in Group II (P<0.05). Only 1 patient in Group I developed pneumonia, which was fewer than that in Group II, with a significant difference (P<0.05). CONCLUSIONS Naloxone combined with hemodialysis effectively reduces the central inhibition of alcohol, shortens consciousness recovery time, improves respiratory and cardiovascular function, decreases hepatic and renal function damages, and reduces the incidence of complications.


Asunto(s)
Alcoholismo/tratamiento farmacológico , Alcoholismo/terapia , Naloxona/farmacología , Enfermedad Aguda , Adulto , Estado de Conciencia , Femenino , Escala de Coma de Glasgow , Humanos , Masculino , Naloxona/uso terapéutico , Diálisis Renal/métodos
18.
J Cell Physiol ; 232(8): 2178-2185, 2017 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-27935034

RESUMEN

MicroRNAs have been used as diagnostic and prognostic biomarkers for many cancers including oral squamous cell carcinoma (OSCC). Several studies have been shown that microRNA (miRNA) play important roles during the progression of OSCC. However, the results vary largely in different studies due to different platforms and sample sizes. In this study, we systematically evaluated a large scale of miRNA profiles from current qualified OSCC samples, and further investigated the functions of genes regulated by these key miRNAs as well as the signaling pathways through which these miRNA effect carcinogenesis. Seven key miRNAs were identified, and of which three were significantly upregulated, including hsa-miR-21, hsa-miR-31, hsa-miR-338, and four were downregulated, namely hsa-miR-125b, hsa-miR-133a, hsa-miR-133b, and hsa-miR-139. The function enrichment analysis revealed that target genes of upregulated miRNAs were associated with cellular protein metabolic process, macromolecule metabolic process, and TGF-beta pathway, while the targets of downregulated were enriched in negative regulation of macromolecule biosynthetic process and gene expression, and p53, long-term potentiation and adherens junction pathways. Transcription factor analysis revealed that there were 67 (51.1%) transcription factors influenced by both up and downregulated miRNAs. In summary, seven key miRNAs were found to play essential role in progression of OSCC, as well as the target genes and transcription factors of these miRNAs. The potential functions of these target genes identified in our study may be profitable to diagnosis and prognostic prediction of OSCC as biomarkers. J. Cell. Physiol. 232: 2178-2185, 2017. © 2016 Wiley Periodicals, Inc.


Asunto(s)
Biomarcadores de Tumor/genética , Carcinoma de Células Escamosas/genética , Perfilación de la Expresión Génica/métodos , Neoplasias de Cabeza y Cuello/genética , MicroARNs/genética , Neoplasias de la Boca/genética , Análisis de Secuencia por Matrices de Oligonucleótidos , Transcriptoma , Carcinoma de Células Escamosas/patología , Estudios de Casos y Controles , Biología Computacional , Bases de Datos Genéticas , Progresión de la Enfermedad , Regulación Neoplásica de la Expresión Génica , Redes Reguladoras de Genes , Estudios de Asociación Genética , Predisposición Genética a la Enfermedad , Neoplasias de Cabeza y Cuello/patología , Humanos , Neoplasias de la Boca/patología , Fenotipo , Valor Predictivo de las Pruebas , Transducción de Señal/genética , Carcinoma de Células Escamosas de Cabeza y Cuello , Factores de Transcripción/genética , Factores de Transcripción/metabolismo
19.
Tumour Biol ; 39(7): 1010428317708900, 2017 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-28718365

RESUMEN

Hepatocellular carcinoma is one of the most mortal and prevalent cancers with increasing incidence worldwide. Elucidating genetic driver genes for prognosis and palindromia of hepatocellular carcinoma helps managing clinical decisions for patients. In this study, the high-throughput RNA sequencing data on platform IlluminaHiSeq of hepatocellular carcinoma were downloaded from The Cancer Genome Atlas with 330 primary hepatocellular carcinoma patient samples. Stable key genes with differential expressions were identified with which Kaplan-Meier survival analysis was performed using Cox proportional hazards test in R language. Driver genes influencing the prognosis of this disease were determined using clustering analysis. Functional analysis of driver genes was performed by literature search and Gene Set Enrichment Analysis. Finally, the selected driver genes were verified using external dataset GSE40873. A total of 5781 stable key genes were identified, including 156 genes definitely related to prognoses of hepatocellular carcinoma. Based on the significant key genes, samples were grouped into five clusters which were further integrated into high- and low-risk classes based on clinical features. TMEM88, CCL14, and CLEC3B were selected as driver genes which clustered high-/low-risk patients successfully (generally, p = 0.0005124445). Finally, survival analysis of the high-/low-risk samples from external database illustrated significant difference with p value 0.0198. In conclusion, TMEM88, CCL14, and CLEC3B genes were stable and available in predicting the survival and palindromia time of hepatocellular carcinoma. These genes could function as potential prognostic genes contributing to improve patients' outcomes and survival.


Asunto(s)
Biomarcadores de Tumor/genética , Carcinoma Hepatocelular/genética , Quimiocinas CC/genética , Lectinas Tipo C/genética , Neoplasias Hepáticas/genética , Proteínas de la Membrana/genética , Biomarcadores de Tumor/biosíntesis , Carcinoma Hepatocelular/patología , Quimiocinas CC/biosíntesis , Supervivencia sin Enfermedad , Femenino , Regulación Neoplásica de la Expresión Génica , Humanos , Estimación de Kaplan-Meier , Lectinas Tipo C/biosíntesis , Neoplasias Hepáticas/patología , Masculino , Proteínas de la Membrana/biosíntesis , Pronóstico , Modelos de Riesgos Proporcionales
20.
Nanotechnology ; 28(33): 33LT01, 2017 Aug 18.
Artículo en Inglés | MEDLINE | ID: mdl-28721952

RESUMEN

Nanocoatings of covalent organic frameworks (COFs) on nickel nanowires (NiNWs) have been designed and successfully fabricated for the first time, which showed greatly enhanced electrochemical performances for supercapacitors. The specific capacitance of electrodes based on as-fabricated COFs nanocoatings reached up to 314 F g-1 at 50 A g-1, which retained 74% of the specific capacitance under the current density of 2 A g-1. The ultrahigh current density makes the charge-discharge process extremely rapid. The outstanding electrochemical performances of COFs nanocoating on NiNWs make it an ideal candidate for supercapacitors. And the nanocoating-design can also give a guidance for application of COFs in high-performance energy storages.

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