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1.
Small ; 20(23): e2307603, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38213024

RESUMEN

Bacterial cellulose/oxidized bacterial cellulose nanofibrils (BC/oxBCNFs) macro-fibers are developed as a novel scaffold for vascular tissue engineering. Utilizing a low-speed rotary coagulation spinning technique and precise solvent control, macro-fibers with a unique heterogeneous structure with dense surface and porous core are created. Enhanced by a polydopamine (PDA) coating, these macro-fibers offer robust mechanical integrity, high biocompatibility, and excellent cell adhesion. When cultured with endothelial cells (ECs) and smooth muscle cells (SMCs), the macro-fibers support healthy cell proliferation and exhibit a unique spiral SMC alignment, demonstrating their vascular suitability. This innovative strategy opens new avenues for advances in tissue engineering.


Asunto(s)
Celulosa , Nanofibras , Ingeniería de Tejidos , Andamios del Tejido , Ingeniería de Tejidos/métodos , Nanofibras/química , Andamios del Tejido/química , Celulosa/química , Humanos , Miocitos del Músculo Liso/citología , Proliferación Celular/efectos de los fármacos , Adhesión Celular , Células Endoteliales/citología , Células Endoteliales de la Vena Umbilical Humana , Indoles/química , Polímeros
2.
Opt Express ; 32(7): 12200-12212, 2024 Mar 25.
Artículo en Inglés | MEDLINE | ID: mdl-38571050

RESUMEN

As an integral component of the laser interferometry measurement system, the tilt-to-length (TTL) coupling noise inside the telescope stands out as a critical noise factor that requires meticulous consideration. In the TianQin project, the non-geometric TTL-coupled noise inside the telescope should be less than 0.22 pm/Hz1/2. Additionally, the wavefront aberration RMS at the small pupil of the telescope needs to be better than 0.0065 λ. These requirements set for the telescope are exceptionally stringent. To address this challenge, this study aims to relax the wavefront aberration requirements by mitigating non-geometric TTL coupling noise, while ensuring the non-geometric TTL coupling noise remains below 0.22 pm/Hz1/2. By controlling the coupling aberration proportion, the wavefront aberration RMS at the small pupil of the telescope can be relaxed to 0.014 λ. Alternatively, optimizing the Gaussian beam waist radius can relax the wavefront aberration RMS to 0.016 λ. By simultaneously utilizing two optimization methods, the wavefront aberration at the small pupil of the telescope can be reduced to 0.033 λ, resulting in an impressive success rate of 91.15% in meeting the noise requirements.

3.
Opt Lett ; 49(11): 2966-2969, 2024 Jun 01.
Artículo en Inglés | MEDLINE | ID: mdl-38824304

RESUMEN

Over the past decades, spin qubits in silicon carbide (SiC) have emerged as promising platforms for a wide range of quantum technologies. The fluorescence intensity holds significant importance in the performance of quantum photonics, quantum information process, and sensitivity of quantum sensing. In this work, a dual-layer Au/SiO2 dielectric cavity is employed to enhance the fluorescence intensity of a shallow silicon vacancy ensemble in 4H-SiC. Experimental results demonstrate an effective fourfold augmentation in fluorescence counts at saturating laser power, corroborating our theoretical predictions. Based on this, we further investigate the influence of dielectric cavities on the contrast and linewidth of optically detected magnetic resonance (ODMR). There is a 1.6-fold improvement in magnetic field sensitivity. In spin echo experiments, coherence times remain constant regardless of the thickness of dielectric cavities. These experiments pave the way for broader applications of dielectric cavities in SiC-based quantum technologies.

4.
Acta Pharmacol Sin ; 45(3): 619-632, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-37848553

RESUMEN

N6-methyladenosine (m6A) modification is a prevalent RNA epigenetic modification, which plays a crucial role in tumor progression including metastasis. Isothiocyanates (ITCs) are natural compounds and inhibit the tumorigenesis of various cancers. Our previous studies show that ITCs inhibit the proliferation and metastasis of non-small cell lung cancer (NSCLC) cells, and have synergistic effects with chemotherapy drugs. In this study, we investigated the molecular mechanisms underlying the inhibitory effects of ITCs on cancer cell metastasis. We showed that phenethyl isothiocyanate (PEITC) dose-dependently inhibited the cell viability of both NSCLC cell lines H1299 and H226 with IC50 values of 17.6 and 15.2 µM, respectively. Furthermore, PEITC dose-dependently inhibited the invasion and migration of H1299 and H226 cells. We demonstrated that PEITC treatment dose-dependently increased m6A methylation levels and inhibited the expression of the m6A demethylase fat mass and obesity-associated protein (FTO) in H1299 and H226 cells. Knockdown of FTO significantly increased m6A methylation in H1299 and H226 cells, impaired their abilities of invasion and migration in vitro, and enhanced the inhibition of PEITC on tumor growth in vivo. Overexpression of FTO promoted the migration of NSCLC cells, and also mitigated the inhibitory effect of PEITC on migration of NSCLC cells. Furthermore, we found that FTO regulated the mRNA m6A modification of a transcriptional co-repressor Transducin-Like Enhancer of split-1 (TLE1) and further affected its stability and expression. TCGA database analysis revealed TLE1 was upregulated in NSCLC tissues compared to normal tissues, which might be correlated with the metastasis status. Moreover, we showed that PEITC suppressed the migration of NSCLC cells by inhibiting TLE1 expression and downstream Akt/NF-κB pathway. This study reveals a novel mechanism underlying ITC's inhibitory effect on metastasis of lung cancer cells, and provided valuable information for developing new therapeutics for lung cancer by targeting m6A methylation.


Asunto(s)
Carcinoma de Pulmón de Células no Pequeñas , Neoplasias Pulmonares , Humanos , Carcinoma de Pulmón de Células no Pequeñas/metabolismo , Neoplasias Pulmonares/patología , Movimiento Celular , Isotiocianatos/farmacología , Isotiocianatos/uso terapéutico , Línea Celular Tumoral , Proteínas Co-Represoras/farmacología , Dioxigenasa FTO Dependiente de Alfa-Cetoglutarato/genética
5.
J Physiol ; 601(16): 3585-3604, 2023 08.
Artículo en Inglés | MEDLINE | ID: mdl-37421377

RESUMEN

The neuropeptide orexin is involved in motor circuit function. However, its modulation on neuronal activities of motor structures, integrating orexin's diverse downstream molecular cascades, remains elusive. By combining whole-cell patch-clamp recordings and neuropharmacological methods, we revealed that both non-selective cationic conductance (NSCC) and endocannabinoids (eCBs) are recruited by orexin signalling on reticulospinal neurones in the caudal pontine reticular nucleus (PnC). The orexin-NSCC cascade provides a depolarizing force that proportionally enhances the firing-responsive gain of these neurones. Meanwhile, the orexin-eCB cascade selectively attenuates excitatory synaptic strength in these neurones by activating presynaptic cannabinoid receptor type 1. This cascade restrains the firing response of the PnC reticulospinal neurones to excitatory inputs. Intriguingly, non-linear or linear interactions between orexin postsynaptic excitation and presynaptic inhibition can influence the firing responses of PnC reticulospinal neurones in different directions. When presynaptic inhibition is in the lead, non-linear interactions can prominently downregulate or even gate the firing response. Conversely, linear interactions occur to promote the firing response, and these linear interactions can be considered a proportional reduction in the contribution of depolarization to firing by presynaptic inhibition. Through the dynamic employment of these interactions, adaptive modulation may be achieved by orexin to restrain or even gate the firing output of the PnC to weak/irrelevant input signals and facilitate those to salient signals. KEY POINTS: This study investigated the effects of orexin on the firing activity of PnC reticulospinal neurones, a key element of central motor control. We found that orexin recruited both the non-selective cationic conductances (NSCCs) and endocannabinoid (eCB)-cannabinoid receptor type 1 (CB1R) system to pontine reticular nucleus (PnC) reticulospinal neurones. The orexin-NSCC cascade exerts a postsynaptic excitation that enhances the firing response, whereas the orexin-eCB-CB1R cascade selectively attenuates excitatory synaptic strength that restrains the firing response. The postsynaptic and presynaptic actions of orexins occur in an overlapping time window and interact to dynamically modulate firings in PnC reticulospinal neurones. Non-linear interactions occur when presynaptic inhibition of orexin is in the lead, and these interactions can prominently downregulate or even gate firing responses in PnC reticulospinal neurones. Linear interactions occur when postsynaptic excitation of orexin is in the lead, and these interactions can promote the firing response. These linear interactions can be considered a proportional reduction of the contribution of depolarization to firing by presynaptic inhibition.


Asunto(s)
Endocannabinoides , Neuropéptidos , Orexinas/farmacología , Endocannabinoides/farmacología , Neuronas/fisiología , Receptores de Cannabinoides
6.
BMC Cancer ; 23(1): 956, 2023 Oct 09.
Artículo en Inglés | MEDLINE | ID: mdl-37814205

RESUMEN

MicroRNAs (miRNAs) have been reported to serve as potential biomarkers in bladder cancer and play important roles in cancer progression. This study aimed to investigate the biological role of miR-205-3p in bladder cancer. We showed that miR-205-3p was significantly down-regulated in bladder cancer tissues and cells. Moreover, overexpression of miR-205-3p inhibited bladder cancer progression in vitro. Then we confirmed that GLO1, a downstream target of miR-205-3p, mediated the effect of miR-205-3p on bladder cancer cells. In addition, we found that miR-205-3p inhibits P38/ERK activation through repressing GLO1. Eventually, we confirmed that miR-205-3p inhibits the occurrence and progress of bladder cancer by targeting GLO1 in vivo by nude mouse tumorigenesis and immunohistochemistry. In a word, miR-205-3p inhibits proliferation and metastasis of bladder cancer cells by activating the GLO1 mediated P38/ERK signaling pathway and that may be a potential therapeutic target for bladder cancer.


Asunto(s)
Lactoilglutatión Liasa , MicroARNs , Neoplasias de la Vejiga Urinaria , Animales , Ratones , Línea Celular Tumoral , Movimiento Celular , Proliferación Celular/genética , Regulación Neoplásica de la Expresión Génica , MicroARNs/genética , MicroARNs/metabolismo , Transducción de Señal , Neoplasias de la Vejiga Urinaria/patología , Humanos , Lactoilglutatión Liasa/metabolismo
7.
J Environ Manage ; 345: 118778, 2023 Nov 01.
Artículo en Inglés | MEDLINE | ID: mdl-37591105

RESUMEN

Sodium dimethyl dithiocarbamate (SDD) is widely used for stabilizing heavy metals to minimize pollution from air pollution control (APC) residues derived from municipal solid waste incineration. However, the effect of environmental conditions on heavy metal leaching from SDD-stabilized APC residues remains unknown. Therefore, this study aimed to evaluate the durability of SDD-stabilized APC residues and determine the relationship between heavy metal leaching and environmental factors, including pH, temperature, and oxygen. The results revealed that accelerated SDD decomposition and the decline in durability of SDD-stabilized APC residues were caused by acidic and aerated conditions and temperatures above 40 °C. A decrease in pH from 12.25 to 4.69 increased the Cd and Pb concentrations in SDD-stabilized APC residue leachate from below detection (0.002 mg/L) to 1.32 mg/L and 0.04 mg/L to 3.79 mg/L, respectively. Heating at 100 °C for 2 d increased the Cd and Pb concentrations from below detection (0.002 mg/L and 0.01 mg/L) to 2.96 mg/L and 0.47 mg/L, respectively. Aeration for 5 d increased the Cd and Pb concentrations from below detection to 0.09 mg/L and 0.49 mg/L, respectively. The decline in durability was attributed to acid hydrolysis, thermal decomposition, and oxidative damage of SDD, resulting in breakage of the chelated sulfur-metal bond, which was confirmed by the decrease in the oxidizable fraction of heavy metals and the SDD content. This study improves the understanding of the factors contributing to the decline in durability of heavy metals in SDD-stabilized APC residues, which is important for ensuring the long-term stabilization and environmental safety of these residues.


Asunto(s)
Contaminación del Aire , Metales Pesados , Eliminación de Residuos , Incineración , Eliminación de Residuos/métodos , Residuos Sólidos , Dimetilditiocarbamato , Cadmio , Plomo , Metales Pesados/química , Sodio , Ceniza del Carbón , Carbono
8.
Am Heart J ; 234: 101-110, 2021 04.
Artículo en Inglés | MEDLINE | ID: mdl-33465369

RESUMEN

BACKGROUND: Double kissing (DK) crush approach for patients with coronary bifurcation lesions, particularly localized at distal left main or lesions with increased complexity, is associated with significant reduction in clinical events when compared with provisional stenting. Recently, randomized clinical trial has demonstrated the net clinical benefits by intravascular ultrasound (IVUS)-guided implantation of drug-eluting stent in all-comers. However, the improvement in clinical outcome after DK crush treatment guided by IVUS over angiography guidance for patients with complex bifurcation lesions have never been studied in a randomized fashion. TRIAL DESIGN: DKCRUSH VIII study is a prospective, multicenter, randomized controlled trial designed to assess superiority of IVUS-guided vs angiography-guided DK crush stenting in patients with complex bifurcation lesions according to DEFINITION criteria. A total of 556 patients with complex bifurcation lesions will be randomly (1:1 of ratio) assigned to IVUS-guided or angiography-guided DK crush stenting group. The primary end point is the rate of 12-month target vessel failure, including cardiac death, target vessel myocardial infarction, or clinically driven target vessel revascularization. The secondary end points consist of the individual component of primary end point, all-cause death, myocardial infarction, and in-stent restenosis. The safety end point is the incidence of definite or probable stent thrombosis. An angiographic follow-up will be performed for all patients at 13 months and clinical follow-up will be continued annually until 3 years after the index procedure. CONCLUSIONS: DKCRUSH VIII trial is the first study designed to evaluate the differences in efficacy and safety between IVUS-guided and angiography-guided DK crush stenting in patients with complex true bifurcation lesions. This study will also provide IVUS-derived criteria to define optimal DK crush stenting for bifurcation lesions at higher complexity.


Asunto(s)
Angiografía Coronaria/métodos , Enfermedad Coronaria/terapia , Stents Liberadores de Fármacos , Intervención Coronaria Percutánea/métodos , Ultrasonografía Intervencional/métodos , Causas de Muerte , Enfermedad Coronaria/diagnóstico por imagen , Enfermedad Coronaria/mortalidad , Enfermedad Coronaria/patología , Reestenosis Coronaria/etiología , Trombosis Coronaria/etiología , Stents Liberadores de Fármacos/efectos adversos , Humanos , Infarto del Miocardio/etiología , Revascularización Miocárdica , Estudios Prospectivos
9.
Fish Shellfish Immunol ; 110: 67-74, 2021 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-33383178

RESUMEN

Chitinase can degrade chitin and play an essential role in animal immunity and plant defense. The immune functions of Chitinase in Procambarus clarkii (P. clarkii) remain to elucidate. Here, we identified PcChitinase 2 gene sequence from P. clarkii and studied its spatial and temporal expression profiles. The PcChitinase 2 transcribed unequally in different tissues; however, its expression was highest in those of stomach, gut, and hepatopancreas. The challenge with lipolysaccharide or peptidoglycan significantly up-regulated the expression of PcChitinase 2 in hepatopancreas. The knockdown of the PcChitinase 2 gene by double-stranded RNA suppressed most of the Toll-pathway-related immune genes (phospholipase, lectin, sptazle Cactus, serine proteikinase, anti-lipopolysaccharide factor, and Toll) production were significantly increased. Our results suggest PcChitinase 2 may be involved in the innate immune responses of P. clarkii by modulating the toll pathway.


Asunto(s)
Astacoidea/inmunología , Quitinasas/genética , Quitinasas/inmunología , Regulación de la Expresión Génica/inmunología , Inmunidad Innata/genética , Receptores Toll-Like/genética , Secuencia de Aminoácidos , Animales , Proteínas de Artrópodos/química , Proteínas de Artrópodos/genética , Proteínas de Artrópodos/inmunología , Astacoidea/enzimología , Astacoidea/genética , Secuencia de Bases , Quitinasas/química , Perfilación de la Expresión Génica , Filogenia , Alineación de Secuencia
10.
Molecules ; 26(18)2021 Sep 13.
Artículo en Inglés | MEDLINE | ID: mdl-34577017

RESUMEN

Flavonoids are key secondary metabolites that are biologically active and perform diverse functions in plants such as stress defense against abiotic and biotic stress. In addition to its importance, no comprehensive information has been available about the secondary metabolic response of Populus tree, especially the genes that encode key enzymes involved in flavonoid biosynthesis under drought stress. In this study, the quantitative real-time polymerase chain reaction (qRT-PCR) analysis revealed that the expression of flavonoid biosynthesis genes (PtPAL, Pt4-CL, PtCHS, PtFLS-1, PtF3H, PtDFR, and PtANS) gradually increased in the leaves of hybrid poplar (P. tremula × P. alba), corresponding to the drought stress duration. In addition, the activity and capacity of antioxidants have also increased, which is positively correlated with the increment of phenolic, flavonoid, anthocyanin, and carotenoid compounds under drought stress. As the drought stress prolonged, the level of reactive oxygen species such as hydrogen peroxide (H2O2) and singlet oxygen (O2-) too increased. The concentration of phytohormone salicylic acid (SA) also increased significantly in the stressed poplar leaves. Our research concluded that drought stress significantly induced the expression of flavonoid biosynthesis genes in hybrid poplar plants and enhanced the accumulation of phenolic and flavonoid compounds with resilient antioxidant activity.


Asunto(s)
Sequías , Populus , Estrés Fisiológico , Regulación de la Expresión Génica de las Plantas
11.
J Cell Mol Med ; 24(14): 7778-7788, 2020 07.
Artículo en Inglés | MEDLINE | ID: mdl-32468683

RESUMEN

To explore the relationship between autophagy and cell function, we investigated how PLAC8-mediated autophagy influences proliferation, apoptosis and epithelial-mesenchymal transition (EMT) in NPC. Colony formation analyses and CCK8 assays were used to assess the proliferative capacity of NPC cells. Transmission electron microscopy (TEM) was used to identify autophagosomes. Autophagic flux was monitored using the tandem monomeric RFP-GFP-tagged LC3 (tfLC3) assay. The rate of apoptosis in NPC cells was analysed by flow cytometry. Western blot analysis was used to evaluate the activation of autophagy and the signalling status of the AKT/mTOR pathway. Our study reveals that knocking out PLAC8 (koPLAC8) induces autophagy and apoptosis, while suppressing NPC cell proliferation and EMT. However, inhibition of autophagy with 3-methyladenine or by knocking down Beclin-1 reverses the cell proliferation, apoptosis and EMT influenced by koPLAC8. We find that koPLAC8 inhibits the phosphorylation of AKT and its downstream target, mTOR. Moreover, immunofluorescence and co-immunoprecipitation reveal complete PLAC8/AKT colocalization and PLAC8/AKT interaction, respectively. Furthermore, knockout of PLAC8 induced autophagy and inactivated AKT/mTOR signalling pathway of NPC xenografts. Overall, our findings demonstrate that koPLAC8 induces autophagy via the AKT/mTOR pathway, thereby inhibiting cell proliferation and EMT, and promoting apoptosis in NPC cells.


Asunto(s)
Autofagia/genética , Neoplasias Nasofaríngeas/etiología , Neoplasias Nasofaríngeas/metabolismo , Proteínas/genética , Proteínas Proto-Oncogénicas c-akt/metabolismo , Transducción de Señal , Serina-Treonina Quinasas TOR/metabolismo , Animales , Apoptosis/genética , Beclina-1/genética , Beclina-1/metabolismo , Línea Celular Tumoral , Proliferación Celular , Modelos Animales de Enfermedad , Susceptibilidad a Enfermedades , Transición Epitelial-Mesenquimal/genética , Técnicas de Silenciamiento del Gen , Humanos , Inmunohistoquímica , Masculino , Ratones , Modelos Biológicos , Neoplasias Nasofaríngeas/patología , Proteínas/metabolismo , ARN Interferente Pequeño/genética
12.
Opt Express ; 28(2): 1249-1260, 2020 Jan 20.
Artículo en Inglés | MEDLINE | ID: mdl-32121839

RESUMEN

We note that most of the studies of the single photon scattering inside a one-dimensional coupled resonator waveguide are based on the waveguide coupling with the atom systems. In this paper, we will study the single photon scattering enabled by another system, i.e., the second-order nonlinearity, which can act as a single photon switch to control the single photon transmission and reflection inside the one-dimensional coupled resonator waveguide. The transmission rate is calculated to analyze the single-photon scattering properties. In addition, a more complicated second-order nonlinear form, i.e., three-wave mixing, is discussed to control single photon transmission inside the one-dimensional coupled resonator waveguide.

13.
Soft Matter ; 16(37): 8526-8546, 2020 Sep 30.
Artículo en Inglés | MEDLINE | ID: mdl-32945331

RESUMEN

Electrohydrodynamics is among the most promising techniques for manipulating liquids in microsystems. The electric stress actuates, generates, and coalesces droplets of small sizes; it also accelerates, focuses, and controls the motion of fine jets. In this review, the current understanding of dynamic regimes of electrically driven drops and jets in multiphase microsystems is summarized. The experimental description and underlying mechanism of force interplay and instabilities are discussed. Conditions for controlled transitions among different regimes are also provided. Emerging new phenomena either due to special interfacial properties or geometric confinement are emphasized, and simple scaling arguments proposed in the literature are introduced. The review provides useful perspectives for investigations involving electrically driven droplets and jets.

14.
Zhongguo Zhong Yao Za Zhi ; 45(3): 548-554, 2020 Feb.
Artículo en Zh | MEDLINE | ID: mdl-32237512

RESUMEN

Study the suitability of organic film for salvianolic acid in the ultrafiltration process of Danshen Dizhuye. UPLC was used to analyze the migration of nine phenolic active ingredients in Danshen Dizhuye during ultrafiltration of PES hollow fiber membrane and PS hollow fiber membrane. The structural composition of multi-components was analyzed by three different batches of Danshen Dizhuye before and after ultrafiltration of the two membranes. The results showed that 9 phenolic active ingredients in Danshen Dizhuye did not change significantly after ultrafiltration through PES membrane. However, after ultrafiltration through PS membrane, the content of sodium danshensu, protocatechualdehyde, caffeic acid, 3-hydroxy-4-methoxycinnamic acid and rosmarinic acid in Danshen Dizhuye did not change significantly, while salvianolic acid D, salvianolic acid B and lithospermic acid decreased by about 20%, and the content of salvianolic acid A decreased significantly. The final content in equilibrium was only about 20% of the original solution. Therefore, an in-depth study on the migration particularity of salvianolic acid A in ultrafiltration membrane was the focuse. The results showed that the loss of salvianolic acid A was caused by both membranes during ultrafiltration, and salvianolic acid A was lost more in PS membrane. When the membrane was washed and regenerated, it was found that salvianolic acid A was detected in the ethanol washing solution, but not in the washing liquid, indicating that the loss of salvianolic acid A during the ultrafiltration was mainly adsorptive action. The results suggested that the migration of phenolic active ingredients in Danshen Dizhuye during the membrane ultrafiltration process did not completely follow the molecular weight passing rule of the membrane pore size. At the same time, it may be affected by factors, such as the structure of the membrane material, and the interaction between the membrane structure and the structure of components, and exhibit different migration behaviors during the ultrafiltration of the membrane.


Asunto(s)
Alquenos/química , Medicamentos Herbarios Chinos/química , Polifenoles/química , Salvia miltiorrhiza/química , Ultrafiltración , Cromatografía Líquida de Alta Presión
15.
Andrologia ; 51(7): e13304, 2019 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-31090230

RESUMEN

Over the past decades, there is an increasing number of association studies of telomere length (TL) and the risk and recurrence of prostate cancer (PCa), but the results are inconsistent. Hence, we identify the relevant studies published in English on or before 10 January 2019 conducting a literature review in the electronic databases including PubMed, EMBASE and Cochrane Library. Twelve studies (with 19 data sets) were included in this meta-analysis, five of which were associated with risk assessment, six of which reported recurrence of PCa and one of which included them. Our meta-analysis demonstrated a positive association of shorter telomeres in patients with PCa, but without statistical significance (OR, 1.23; 95% CI: 0.91-1.66). Shorter telomeres in stroma (OR, 2.40; 95% CI: 1.61-3.56) and epithelium (OR, 1.70; 95% CI: 1.33-2.16) were positively correlated with PCa, but in leucocyte (OR, 0.81; 95% CI: 0.73-0.91) had negative association with PCa. Furthermore, two studies combined yielded a pooled OR of 2.87 (95% CI: 1.22-6.76) for the association between shorter TL and metastasis. These results are novel and give further strength to formulate eligible individualising treatment and surveillance strategies.


Asunto(s)
Recurrencia Local de Neoplasia/genética , Neoplasias de la Próstata/genética , Acortamiento del Telómero , Telómero/genética , Conjuntos de Datos como Asunto , Humanos , Masculino , Recurrencia Local de Neoplasia/epidemiología , Recurrencia Local de Neoplasia/patología , Próstata/patología , Neoplasias de la Próstata/patología , Medición de Riesgo
16.
Zhongguo Zhong Yao Za Zhi ; 44(5): 899-904, 2019 Mar.
Artículo en Zh | MEDLINE | ID: mdl-30989847

RESUMEN

Flower medicinal materials usually refer to Chinese medicinal materials with a complete flower,inflorescence,or part of a flower as the different medicinal parts,they have an important share in the Chinese herbal medicine market and appeared frequently in Chinese medicine prescriptions. Firstly,the species and regional distribution of the flower medicinal materials resources in China were briefly summarized. Secondly,the characteristics,yield,producing area and origin distribution of the main flower medicinal materials in Henan province were discussed. Finally,the present situation and the main problems of the flower medicinal materials industry in Henan province were comprehensively analyzed,and the corresponding industrial development countermeasures were put forward.This research was intended to provide decision-making demonstration and scientific basis for the rational exploitation and utilization of resources,breeding of new varieties,planting division,production layout and the healthy and sustainable development of the flower medicinal materials industry in Henan province.


Asunto(s)
Medicamentos Herbarios Chinos , Flores/química , Plantas Medicinales/crecimiento & desarrollo , China , Conservación de los Recursos Naturales , Industrias , Investigación
17.
Phys Rev Lett ; 120(3): 033203, 2018 Jan 19.
Artículo en Inglés | MEDLINE | ID: mdl-29400507

RESUMEN

We demonstrate that ultrashort pulses carry the possibility for a new regime of light-matter interaction with nonadiabatic electron processes sensitive to the envelope derivative of the light pulse. A standard single pulse with its two peaks in the derivative separated by the width of the pulse acts in this regime like a traditional double pulse. The two ensuing nonadiabatic ionization bursts have slightly different ionization amplitudes. This difference is due to the redistribution of continuum electron energy during the bursts, negligible in standard photoionization. A time-dependent close-coupling approach based on cycle-averaged potentials in the Kramers-Henneberger reference frame permits a detailed understanding of light-pulse derivative-driven electron dynamics.

18.
BMC Gastroenterol ; 17(1): 140, 2017 Dec 04.
Artículo en Inglés | MEDLINE | ID: mdl-29202690

RESUMEN

BACKGROUND: The current clinical practice on chronic hepatitis B (CHB) requires better on-treatment monitoring of viral persistence. Quantified assays for hepatitis B surface antigen (HBsAg) and core-related antigen (HBcrAg) hold promise for further optimization of therapy. Here, we aimed to characterize HBcrAg during the natural course of CHB. METHODS: Four-hundred and forty four treatment naïve CHB patients, who all underwent liver histology examination, were enrolled in this cross-sectional study. Their HBV DNA, HBsAg, HBeAg and HBcrAg titres were quantified and analyzed in the context of four distinct clinical phases. Correlation of HBcrAg and HBsAg with other markers were performed. The relationship between liver and serum antigen levels were also assessed. RESULTS: HBcrAg, like HBsAg, exhibited high degree of correlation with HBV DNA. However, a more significant linear relationship was found between HBcrAg and HBeAg titre in immune tolerant (IT) and immune clearance (IC) phases, while in HBeAg negative hepatitis (ENH) group, HBV DNA is a major determinant of HBcrAg. Significant difference was observed in liver HBcAg score and HBcrAg level in both IT and IC phases whereas barely significant positive correlations between liver HBsAg score and HBsAg titre was documented. CONCLUSION: HBcrAg titre exhibited distinct correlative profile in a phase-specific manner. In addition, its level is well-related to the intrahepatic expression of core antigen. It has a considerable utility in monitoring and refining antiviral therapy.


Asunto(s)
Antígenos del Núcleo de la Hepatitis B/sangre , Hepatitis B Crónica/sangre , Adulto , Antivirales/uso terapéutico , Biomarcadores/sangre , Estudios Transversales , ADN Viral/sangre , Femenino , Hepatitis B/genética , Hepatitis B/inmunología , Antígenos del Núcleo de la Hepatitis B/metabolismo , Antígenos de Superficie de la Hepatitis B/sangre , Antígenos e de la Hepatitis B/sangre , Hepatitis B Crónica/tratamiento farmacológico , Hepatitis B Crónica/virología , Humanos , Modelos Lineales , Hígado/metabolismo , Masculino , Carga Viral
19.
Acta Pharmacol Sin ; 38(4): 539-550, 2017 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-28112178

RESUMEN

Isothiocyanates, such as allyl isothiocya¬nate (AITC), benzyl isothiocyanate (BITC), phenethyl isothio¬cyanate (PEITC) and sulforaphane (SFN), are natural compounds abundant in cruciferous vegetables, which have substantial chemopreventive activities against various human malignancies. However, the mechanisms underlying the inhibition of tumor cell growth by isothiocyanates are not fully understood. Since autophagy has dual functions in cancer, in the present study we investigated the effects of BITC on autophagy induction in human lung cancer cells in vitro and in vivo. BITC (1-100 µmol/L) dose-dependently inhibited the growth of 3 different human lung cancer cell lines A549 (adenocarcinoma), H661 (large cell carcinoma) and SK-MES-1 (squamous cell carcinoma) with IC50 values of 30.7±0.14, 15.9±0.22 and 23.4±0.11 µmol/L, respectively. BITC (10-40 µmol/L) induced autophagy in the lung cancer cells, evidenced by the formation of acidic vesicular organelles (AVOs), the accumulation of LC3-II, the punctate pattern of LC3, and the expression of Atg5. Pretreatment with the autophagy inhibitor 3-MA (5 mmol/L) significantly enhanced the BITC-caused growth inhibition in the lung cancer cells. Furthermore, BITC (20-40 µmol/L) activated ER stress, as shown by the increased cytosolic Ca2+ level and the phosphorylation of the ER stress marker proteins PERK and eIF2α in the lung cancer cells. Pretreatment with the ER stress inhibitor 4-PBA (5 mmol/L) attenuated the autophagy induction and potentiated the BITC-induced cell growth inhibition. In nude mice bearing A549 xenografts, administration of BITC (100 mg·kg-1·d-1, ip) for 8 weeks markedly suppressed the lung tumor growth, and significantly enhanced both autophagy and ER stress in the tumor tissues. Our results demonstrate that BITC inhibits human lung cancer cell growth in vitro and in vivo. In addition, BITC induces autophagy in the lung cancer cells, which protects the cancer cells against the inhibitory action of BITC; the autophagy induction is mediated by the ER stress response.


Asunto(s)
Autofagia/efectos de los fármacos , Estrés del Retículo Endoplásmico/efectos de los fármacos , Isotiocianatos/uso terapéutico , Neoplasias Pulmonares/tratamiento farmacológico , Adenina/análogos & derivados , Adenina/farmacología , Animales , Proteína 5 Relacionada con la Autofagia/metabolismo , Línea Celular Tumoral , Femenino , Xenoinjertos , Humanos , Neoplasias Pulmonares/metabolismo , Neoplasias Pulmonares/patología , Ratones Endogámicos BALB C , Proteínas Asociadas a Microtúbulos/metabolismo , Trasplante de Neoplasias , Fenilbutiratos/farmacología
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