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1.
Nat Mater ; 2024 Apr 25.
Artículo en Inglés | MEDLINE | ID: mdl-38664497

RESUMEN

In situ tailoring of two-dimensional materials' phases under external stimulus facilitates the manipulation of their properties for electronic, quantum and energy applications. However, current methods are mainly limited to the transitions among phases with unchanged chemical stoichiometry. Here we propose on-device phase engineering that allows us to realize various lattice phases with distinct chemical stoichiometries. Using palladium and selenide as a model system, we show that a PdSe2 channel with prepatterned Pd electrodes can be transformed into Pd17Se15 and Pd4Se by thermally tailoring the chemical composition ratio of the channel. Different phase configurations can be obtained by precisely controlling the thickness and spacing of the electrodes. The device can be thus engineered to implement versatile functions in situ, such as exhibiting superconducting behaviour and achieving ultralow-contact resistance, as well as customizing the synthesis of electrocatalysts. The proposed on-device phase engineering approach exhibits a universal mechanism and can be expanded to 29 element combinations between a metal and chalcogen. Our work highlights on-device phase engineering as a promising research approach through which to exploit fundamental properties as well as their applications.

2.
Opt Express ; 32(9): 16103-16114, 2024 Apr 22.
Artículo en Inglés | MEDLINE | ID: mdl-38859247

RESUMEN

Augmented Reality technology enables users to interact with virtual imagines and the real world. The emergence of AR has propelled the development of the next generation of optical devices towards miniaturization, lightweight design, and enhanced light field manipulation capabilities. However, current AR glass still suffer from shortcomings of low efficiency. This work proposes a near-eye display device based on bilayer chiral quasi-BIC (Bound States in the continuum) nonlocal metasurfaces which can reflect narrow bandwidth RGB light with high efficiency while being able to see the natural environment clearly. At the same time, the geometric phase is introduced to realize oblique emission and reflective focusing. Due to its ability to manipulate narrowband light fields, it can reduce the interaction of metasurfaces and environment light, and has potential applications in the fields of imaging and near-eye display.

3.
Opt Express ; 31(4): 6217-6227, 2023 Feb 13.
Artículo en Inglés | MEDLINE | ID: mdl-36823883

RESUMEN

Quantum imaging has non-negligible advantages in terms of sensitivity, signal-to-noise ratio, and novel imaging schemes. Based on metasurfaces, the information density and stability of the quantum imaging system can be further improved. Here we experimentally demonstrate that two patterns, simultaneously and independently superimposed on a high-efficiency dielectric metasurface, can be remotely switched via polarization-entangled photon pairs. Furthermore, using the time-correlated property of entangled photon pairs, the information carried by quantum light can be remarkably discriminated from background noise. This work confirms that the phase manipulation of quantum light with metasurfaces has a huge potential in the field of quantum imaging, quantum state tomography, and also promises real-world quantum metasurface devices.

4.
Opt Lett ; 48(2): 255-258, 2023 Jan 15.
Artículo en Inglés | MEDLINE | ID: mdl-36638431

RESUMEN

Photonics is currently undergoing an era of miniaturization thanks in part to two-dimensional (2D) optical metasurfaces. Their ability to sculpt and redirect optical momentum can give rise to an optical force, which acts orthogonally to the direction of light propagation. Powered by a single unfocused light beam, these lateral optical forces (LOFs) can be used to drive advanced metavehicles and are controlled via the incident beam's polarization. However, the full control of a metavehicle on a 2D plane (i.e. forward, backward, left, and right) with a sign-switchable LOF remains a challenge. Here we present a phase-gradient metasurface route for achieving such full control while also increasing efficiency. The proposed metasurface is able to deflect a normally incident plane wave in a traverse direction by modulating the plane wave's polarization, and results in a sign-switchable recoil LOF. When applied to a metavehicle, this LOF enables a level of motion control that was previously unobtainable.

5.
Curr Allergy Asthma Rep ; 23(12): 675-688, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-37934391

RESUMEN

PURPOSE OF REVIEW: Chronic rhinosinusitis (CRS) is a complicated, heterogeneous disease likely caused by inflammatory and infectious factors. There is clear evidence that innate immune cells, including neutrophils and eosinophils, play a significant role in CRS. Multiple immune cells, including neutrophils and eosinophils, have been shown to release chromatin and granular proteins into the extracellular space in response to triggering extracellular traps (ETs). The formation of ETs remains controversial due to their critical function during pathogen clearance while being associated with harmful inflammatory illnesses. This article summarizes recent research on neutrophil extracellular traps (NETs) and eosinophil extracellular traps (EETs) and their possible significance in the pathophysiology of CRS. RECENT FINDINGS: A novel type of programmed cell death called ETosis, which releases ETs, has been proposed by recent study. Significantly more NETs are presented in nasal polyps, and its granule proteins LL-37 induce NETs production in CRS with nasal polyps (CRSwNP) patients. Similar to NETs, developed in the tissue of nasal polyps, primarily in subepithelial regions with epithelial barrier defects, and are associated with linked to elevated tissue levels of IL-5 and S. aureus colonization. This article provides a comprehensive overview of NETs and EETs, as well as an in-depth understanding of the functions of these ETs in CRS.


Asunto(s)
Trampas Extracelulares , Pólipos Nasales , Rinitis , Rinosinusitis , Sinusitis , Humanos , Trampas Extracelulares/metabolismo , Staphylococcus aureus , Neutrófilos/patología , Eosinófilos , Enfermedad Crónica
6.
Int J Urol ; 30(2): 155-160, 2023 02.
Artículo en Inglés | MEDLINE | ID: mdl-36349911

RESUMEN

OBJECTIVES: There is substantial concern about traditional transperitoneal laparoscopic radical cystectomy (TLRC) due to multiple postoperative complications. In contrast, extraperitoneal laparoscopic radical cystectomy (ELRC) appears to cause a lower rate of morbidity. The present study aimed to compare the efficacy of ELRC and TLRC for bladder cancer (BCa). METHODS: The clinical data of patients undergoing laparoscopic radical cystectomy for BCa from April 2018 to October 2021 were retrospectively analyzed, as ELRC and TLRC groups. The postoperative follow-up data of 275 patients were collected and the incidence of postoperative complications and other perioperative outcomes were compared between the two groups. RESULTS: Surgery was successfully completed in all patients without conversion to open surgery. There was no significant difference in the duration of cystectomy surgery (67.32 ± 23.53 vs 72.17 ± 25.72 min, p = 0.106), intraoperative blood loss (178.06 ± 110.4 vs. 174.56 ± 127.40 ml, p = 0.413), or the number of lymph node dissection (15.1 ± 5.7 vs. 14.5 ± 5.1, p = 0.380) between the two groups. The length of stay (11.6 ± 3.8 vs 14.7 ± 5.6 d, p < 0.001), time to resume food intake after surgery (2.3 ± 0.9 vs 3.0 ± 1.3 d, p < 0.001), and the incidence of ileus (p < 0.001) in the ELRC group were significantly lower than in the TLRC group. CONCLUSIONS: ELRC is a safe procedure that can reduce the incidence of postoperative complications, shorten postoperative hospital stay, reduce the duration of recovery of patients, and, therefore, should be promoted.


Asunto(s)
Laparoscopía , Neoplasias de la Vejiga Urinaria , Derivación Urinaria , Humanos , Cistectomía/efectos adversos , Cistectomía/métodos , Derivación Urinaria/métodos , Estudios Retrospectivos , Laparoscopía/efectos adversos , Laparoscopía/métodos , Resultado del Tratamiento , Neoplasias de la Vejiga Urinaria/cirugía , Complicaciones Posoperatorias/epidemiología , Complicaciones Posoperatorias/etiología , Complicaciones Posoperatorias/cirugía
7.
Opt Express ; 30(11): 18264-18272, 2022 May 23.
Artículo en Inglés | MEDLINE | ID: mdl-36221631

RESUMEN

The all-dielectric metasurfaces can significantly reduce the volume of optical components while having low loss and high performance, which has become a research hotspot in recent years. However, due to the complexity of metasurface geometric design, it is challenging to realize dynamic modulation on all-dielectric metasurface optical elements. Here, we propose a high quality factor (high-Q) pass-band filter designed by introducing the quasi-bound states in the continuum (quasi-BIC) into the silicon array phase-gradient metasurfaces. Our simulations show that due to the quasi-BIC effect only a high-Q resonance with the linewidth less than 1 nm and the corresponding Q value of ∼37000 could transmit along the zeroth order direction, which could be used for ultra-narrow linewidth filtering. Furthermore, our simulations present that the near-fields of the waveguide modes supported by the silicon arrays are partially distributed inside the indium tin oxide (ITO) substrate, which makes it possible to dynamically tune the central wavelength of our proposed filter by varying the ITO refractive index.

8.
Cancer Cell Int ; 22(1): 359, 2022 Nov 17.
Artículo en Inglés | MEDLINE | ID: mdl-36397164

RESUMEN

Glioblastoma (GBM) is the most common primary malignant tumor in the brain, and its robust proliferation and invasion abilities reduce the survival time of patients. Circular RNAs (circRNAs) play an essential role in various tumors, such as regulating tumor cell proliferation, apoptosis, invasion, metastasis, and other progressive phenotypes through different mechanisms. Finding novel circRNAs may significantly contribute to the prognosis of GBM and provide the basis for the targeted therapy of GBM. In this study, we found circPTPRF is a novel circRNA that has never been studied, which was highly expressed in GBM and is closely related to poor patient prognoses. After knockdown or overexpression in glioma cell lines (U87 and LN229) and glioma stem cells (GSCs), we identified that circPTPRF could promote proliferation, invasion, and neurospheres formation abilities of GBM via in vitro and in vivo experiments. Mechanisms, miR-1208 was confirmed as a target of circPTPRF, and miR-1208 can also target the 3'UTR of YY1, and they were proved by luciferase reporter, western blotting (WB), qPCR and RNA immunoprecipitation (RIP) assays. The following rescue experiments demonstrated that circPTPRF was a miR-1208 sponge for upregulating YY1 expression to promote proliferation, invasion and neurosphere formation abilities of GBM in vitro. In conclusion, the circPTPRF/miR-1208/YY1 axis can regulate GBM progression. CircPTPRF may play an essential role in GBM diagnosis and prognostic prediction and be an important molecular target for GBM therapy.

9.
Nanotechnology ; 33(22)2022 Mar 09.
Artículo en Inglés | MEDLINE | ID: mdl-35180712

RESUMEN

Nonlinear optical response could be greatly enhanced when metasurfaces support plasmonic resonances at both fundamental and harmonic wavelengths. However, it is still challenging to fulfill the doubly resonant condition. Here, we propose a dielectric-loading method, which simply coats a conformal thin dielectric layer onto the plasmonic metasurfaces, to introduce an additional degree of freedom and make the doubly resonant condition easily fulfilled. We demonstrate that by simultaneously tuning the thickness of the coated dielectric layer and the geometrical parameters of the gold complementary split-ring resonators (CSRRs), the doubly resonant enhancement of third harmonic generation (THG) could be achieved for any given fundamental wavelengths. We also experimentally verify this concept and show that the THG intensity in the dielectric-loaded CSRRs under the doubly resonant condition could be further increased about 3 times as compared with the case of the conventional CSRRs.

10.
Bull Entomol Res ; 112(6): 745-757, 2022 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-35414375

RESUMEN

The apple buprestid, Agrilus mali Matsumura, that was widespread in north-eastern China, was accidently introduced to the wild apple forest ecosystem in mountainous areas of Xinjiang, China. This invasive beetle feeds on domesticated apples and many species of Malus and presents a serious threat to ancestral apple germplasm sources and apple production worldwide. Estimating the potential area at risk of colonization by A. mali is crucial for instigating appropriate preventative management strategies, especially under global warming. We developed a CLIMEX model of A. mali to project this pest's potential distribution under current and future climatic scenarios in 2100 using CSIRO-Mk 3.0 GCM running the SRES A1B emissions scenario. Under current climate, A. mali could potentially invade neighbouring central Asia and eventually the mid-latitude temperate zone, and some subtropical areas and Pampas Steppe in the Southern Hemisphere. This potential distribution encompasses wild apples species, the ancestral germplasm for domesticated apples. With global warming, the potential distribution shifts to higher latitudes, with the potential range expanding slightly, though the overall suitability could decline in both hemispheres. In 2100, the length of the growing season of this pest in the mid-latitude temperature zone could increase by 1-2 weeks, with higher growth rates in most sites compared with current climate in mid-latitudes, at least in China. Our work highlights the need for strategies to prevent the spread of this pest, managing the threats to wild apples in Tian Shan Mountain forests in Central Asia, and commercial apple production globally. We discuss practical management tactics to reduce the spread of this pest and mitigate its impacts.


Asunto(s)
Escarabajos , Ecosistema , Animales , Malí , Calentamiento Global , Temperatura
11.
World J Surg Oncol ; 20(1): 174, 2022 Jun 02.
Artículo en Inglés | MEDLINE | ID: mdl-35650630

RESUMEN

BACKGROUND: Mammalian LEM-domain proteins (LEMs) are encoded by seven genes, including LAP2, EMD, LEMD1, LEMD2, LEMD3, ANKLE1, and ANKLE2. Though some LEMs were involved in various tumor progression, the expression and prognostic values of LEMs in prostate adenocarcinoma (PRAD) have yet to be analyzed. METHODS: Herein, we investigated the expression, survival data, and immune infiltration levels of LEMs in PRAD patients from ATCG, TIMER, LinkedOmics, and TISIDB databases. We also further validated the mRNA and protein expression levels of ANKLE1, EMD, and LEMD2 in human prostate tumor specimens by qPCR, WB, and IHC. RESULTS: We found that all LEM expressions, except for that of LAP2, were markedly altered in PRAD compared to the normal samples. Among all LEMs, only the expressions of ANKLE1, EMD, and LEMD2 were correlated with advanced tumor stage and survival prognosis in PRAD. Consistent with the predicted computational results, the mRNA and protein expression levels of these genes were markedly increased in the PRAD group. We then found that ANKLE1, EMD, and LEMD2 expressions were markedly correlated with immune cell infiltration levels. High ANKLE1, EMD, and LEMD2 expressions predicted a worse prognosis in PRAD based on immune cells. DNA methylation or/and copy number variations may contribute to the abnormal upregulation of ANKLE1, EMD, and LEMD2 in PRAD. CONCLUSIONS: Taken together, this study implied that ANKLE1, EMD, and LEMD2 were promising prognosis predictors and potential immunotherapy targets for PRAD patients.


Asunto(s)
Variaciones en el Número de Copia de ADN , Neoplasias de la Próstata , Endonucleasas/genética , Humanos , Masculino , Proteínas de la Membrana/genética , Proteínas Nucleares/genética , Pronóstico , Próstata/patología , Neoplasias de la Próstata/patología , ARN Mensajero/genética
12.
ORL J Otorhinolaryngol Relat Spec ; 84(6): 464-472, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35820402

RESUMEN

BACKGROUND: IgG4-related disease (IgG4-RD) is increasingly recognized as a multisystemic, chronic inflammatory process characterized by histologic fibrosis with IgG4-positive plasma cell infiltration. OBJECTIVES: The purpose of this study was to characterize the imaging features of patients diagnosed with IgG4-RD in the head and neck, especially the skull base. METHODS: Our study evaluated CT and MR imaging features of IgG4-RD in the head, neck, and skull base. Images from 15 patients were retrospectively evaluated for the location, signal intensity, morphology, size, boundary, and pre- and post-contrast MRI performances. RESULTS: The lesions presented as irregular shaped, localized masses, distributed in skull base regions; 93.3% of the lesions were isointensity in T1WI (14/15). A total of 80% of the lesions were iso-hypointense in T2WI (12/15); 60% of the lesions got homogeneous enhancement (9/15); and 46.7% of the patients had cranial nerves dysfunction (7/15). The most likely involved cranial nerve was trigeminal nerves (5/15); 60% of the patients had osteolytic bone destruction or sclerosis (9/15). CONCLUSION: Typical radiological features of IgG4-RD included T1 isointensity and T2 hypointensity, homogeneous and gradual enhancement pattern in MRI, easy cranial nerve invasion, dura involvement but the absence of brain edema, and the presence of bone remodeling without destruction, blurred lesion boundaries.


Asunto(s)
Enfermedad Relacionada con Inmunoglobulina G4 , Humanos , Enfermedad Relacionada con Inmunoglobulina G4/diagnóstico por imagen , Estudios Retrospectivos , Cabeza/diagnóstico por imagen , Cuello , Imagen por Resonancia Magnética/métodos , Base del Cráneo/diagnóstico por imagen
13.
Prostate ; 81(11): 736-744, 2021 08.
Artículo en Inglés | MEDLINE | ID: mdl-34056739

RESUMEN

BACKGROUND: To evaluate long-term oncological outcomes of radical prostatectomy (RP) plus androgen deprivation therapy (ADT) in oligometastatic prostate cancer (PCa) patients. METHODS: Our study included oligometastatic PCa patients hospitalized between January 1, 2010 and December 31, 2015, who received ADT with or without RP. We evaluated survival by employing Kaplan-Meier methods, with log-rank tests and univariate and multivariate Cox regression analyses. A meta-analysis of previously published studies was additionally performed. RESULTS: The median follow-up times of both groups were 68.4 months (interquartile range = 56.5-85.0). In this cohort study, significant statistical difference in preoperative total prostate-specific antigen (tPSA; p = .121), clinical T stage (p = .115), and N stage (p = .394) were not found between the two groups. Meanwhile, the difference in overall survival (OS) between the two groups did not reach statistical significance (p = .649). A significant difference was not observed in castration-resistant prostate cancer (CRPC)-free survival between two groups as well (p = .183). Numbers of metastases might be an independent prognosis factor (p = .05) for OS, and postoperative tPSA is a risk predictor for CRPC-free survival (p = .032). A meta-analysis of four relevant studies demonstrated significant statistical difference in clinical improvement with RP plus ADT over ADT alone in OS survival (p < .001; hazard ratio [HR] = 0.51; 95% confidence interval [CI] = 0.38-0.69) instead of CRPC-free survival (p = .42; HR = 0.86; 95% CI = 0.59-1.24). CONCLUSION: The addition of RP to ADT for the treatment of oligometastatic PCa was associated with an improved OS instead of CRPC-free survival.


Asunto(s)
Metástasis de la Neoplasia/terapia , Neoplasias de la Próstata/cirugía , Anciano , Anciano de 80 o más Años , Antagonistas de Andrógenos/uso terapéutico , Estudios de Cohortes , Humanos , Masculino , Persona de Mediana Edad , Metástasis de la Neoplasia/patología , Próstata/patología , Antígeno Prostático Específico/sangre , Prostatectomía , Neoplasias de la Próstata/mortalidad , Neoplasias de la Próstata Resistentes a la Castración/mortalidad , Estudios Retrospectivos , Tasa de Supervivencia
14.
Small ; 17(29): e2100602, 2021 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-34121332

RESUMEN

2D bismuth nanosheets are a promising layered material for formate-producing via electrocatalytic CO2 conversion. However, the commercial interest of bismuth nanosheets in CO2 electroreduction is still rare due to the undesirable current density for formate at moderate operation potentials (about 200 mA mg-1 ) and harsh synthesis conditions (high temperature and/or high pressure). This work reports the preparation of Bi nanosheets with a lateral size in micrometer-scale via electrochemical cathodic exfoliation in aqueous solution at normal pressure and temperature. As-prepared Bi LNSs (L indicates large lateral size) possess high Faradaic efficiencies over 90% within a broad potential window from -0.44 to -1.10 V versus RHE and a superior partial current density about 590 mA mg-1 for formate in comparison with state-of-the-art results. Structure analysis, electrochemical results, and density functional theory calculations demonstrate that the increasing tensile lattice strain observed in Bi LNSs leads to less overlap of d orbitals and a narrower d-band width, which tuning the intermediate binding energies, and therefore promotes the intrinsic activity.

15.
Opt Express ; 29(10): 15269-15278, 2021 May 10.
Artículo en Inglés | MEDLINE | ID: mdl-33985229

RESUMEN

We experimentally and theoretically investigate the influence of alumina coating on the second-harmonic generation (SHG) from split-ring resonator shaped air apertures engraved in a gold film, which are also termed as complementary split-ring resonators (CSRRs). By coating the CSRR arrays with alumina film of certain thickness, we precisely tune their electric diploe resonances (EDRs) to overlap the fundamental wavelength (FW) and realize the EDR enhanced SHG process. On this basis, by shortening the arm length of the CSRRs and then coating them with a certain thickness of the alumina film, we have achieved an SHG enhancement of nearly 1.2-fold in experiment and 8-fold in simulation compared to the CSRR array with an unshortened arm length. We attributed it to the improvement of the magnitude of the effective nonlinear source due to the realization of a doubly-resonant condition. As a flexible method, dielectric coating not only is beneficial to precisely and dynamically optimize the linear and nonlinear properties of the as-fabricated nanoscale devices but also can play the role of a protective layer, which can partially improve the damage threshold of these plasmonic nanoscale devices.

16.
Nanotechnology ; 32(3): 035205, 2021 Jan 15.
Artículo en Inglés | MEDLINE | ID: mdl-33094736

RESUMEN

Plasmonic nanoantennas have been widely explored for boosting up light-matter interactions due to their ability of providing strongly confined and highly enhanced electric near fields, so called 'hot-spots'. Here, we propose a dielectric-loading approach for hot-spots engineering by coating the conventional plasmonic nanoantennas with a conformal high refractive index dielectric film and forming dielectric-loaded plasmonic nanoantennas. Compared to the conventional plasmonic nanoantennas, the corresponding dielectric-loaded ones that resonate at the same frequency are able to provide an extra enhancement in the local electric fields and meanwhile spatially transfer the hot spots to the dielectric surfaces. These findings have important implications for the design of optical nanoantennas with general applications in surface enhanced linear and nonlinear spectroscopies. As a demonstration application, we show that the maximum achievable fluorescence intensity in the dielectric-loaded plasmonic nanoantennas could be significantly larger than that in the conventional plasmonic nanoantennas.

17.
ORL J Otorhinolaryngol Relat Spec ; 83(5): 327-334, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33951673

RESUMEN

OBJECTIVE: The aim of this study was to investigate the efficacy of endoscopic selective vidian neurectomy in the treatment of severe persistent allergic rhinitis (AR) combined with chronic rhinosinusitis (CRS) with nasal polyps (ARwCRSwNP). METHODS: One hundred thirty patients with moderate to severe persistent ARwCRSwNP were enrolled at Xuanwu Hospital, Capital Medical University, from September 2015 to September 2017. Patients were divided into 2 groups. Sixty-one patients (the control group) underwent conventional surgical treatment for CRS with nasal polyps and received conservative treatment for AR. Sixty-nine patients (the experimental group) received conventional surgical treatment for CRS with nasal polyps plus endoscopic selective vidian neurectomy with amputation of the posterior nasal nerve and pharyngeal branch of the vidian nerve. Clinical parameters, including visual analog scale (VAS) score, Lund-Kennedy endoscopic mucosal morphology score, and Lund-Mackay sinus computed tomography (CT) scan lesion range score, were used to analyze and evaluate the preoperative and postoperative data. Comparisons were based on patient scores, and preoperative and postoperative scores obtained at 6, 12, and 24 months were analyzed. RESULTS: The experimental group had higher therapeutic efficacy in nasal obstruction, nasal itching, rhinorrhea, sneezing, and general symptoms than the control group (p < 0.05). No complications such as tear-secretion disorder or atrophic rhinitis occurred in the experimental group, and no significant difference in complications incidence was observed between the 2 groups (p > 0.05). CONCLUSION: Endoscopic selective vidian neurectomy is an effective and safe technique for the management of moderate to severe persistent ARwCRSwNP.


Asunto(s)
Pólipos Nasales , Rinitis Alérgica , Rinitis , Sinusitis , Enfermedad Crónica , Desnervación , Endoscopía , Humanos , Pólipos Nasales/complicaciones , Pólipos Nasales/cirugía , Rinitis/complicaciones , Rinitis/cirugía , Rinitis Alérgica/complicaciones , Rinitis Alérgica/cirugía , Sinusitis/complicaciones , Sinusitis/cirugía , Resultado del Tratamiento
18.
Nature ; 514(7523): 486-9, 2014 Oct 23.
Artículo en Inglés | MEDLINE | ID: mdl-25186728

RESUMEN

Agriculture faces great challenges to ensure global food security by increasing yields while reducing environmental costs. Here we address this challenge by conducting a total of 153 site-year field experiments covering the main agro-ecological areas for rice, wheat and maize production in China. A set of integrated soil-crop system management practices based on a modern understanding of crop ecophysiology and soil biogeochemistry increases average yields for rice, wheat and maize from 7.2 million grams per hectare (Mg ha(-1)), 7.2 Mg ha(-1) and 10.5 Mg ha(-1) to 8.5 Mg ha(-1), 8.9 Mg ha(-1) and 14.2 Mg ha(-1), respectively, without any increase in nitrogen fertilizer. Model simulation and life-cycle assessment show that reactive nitrogen losses and greenhouse gas emissions are reduced substantially by integrated soil-crop system management. If farmers in China could achieve average grain yields equivalent to 80% of this treatment by 2030, over the same planting area as in 2012, total production of rice, wheat and maize in China would be more than enough to meet the demand for direct human consumption and a substantially increased demand for animal feed, while decreasing the environmental costs of intensive agriculture.


Asunto(s)
Agricultura/métodos , Grano Comestible/crecimiento & desarrollo , Grano Comestible/provisión & distribución , Ambiente , Alimentación Animal , China , Fertilizantes/estadística & datos numéricos , Efecto Invernadero/estadística & datos numéricos , Nitrógeno/metabolismo
19.
Lasers Med Sci ; 35(4): 833-839, 2020 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-31485783

RESUMEN

miR-548-3p is one of the members of miR-548 family, a large primate-specific miRNA gene family. The role of miR-548-3p in lung cancer was less studied. In this study, we found the expression of miR-548-3p was lower both in clinical tumor specimens and lung cancer cells compared with normal controls. In vitro, miR-548-3p inhibited lung cancer cell growth and promoted cell apoptosis at the S stage of cell cycle. The underlying mechanism of miR-548b-3p-induced cell proliferation inhibition and apoptosis may be associated with the inhibition of PI3K/AKT signaling pathway. In vivo, miR-548b-3p also suppressed tumor growth in xenografts model of lung cancer cells. Our results indicated that miR-548b-3p might be an anti-tumor target of lung cancer in the future.


Asunto(s)
Genes Supresores de Tumor , Neoplasias Pulmonares/genética , MicroARNs/metabolismo , Animales , Apoptosis/genética , Ciclo Celular/genética , Línea Celular Tumoral , Proliferación Celular/genética , Regulación hacia Abajo/genética , Regulación Neoplásica de la Expresión Génica , Humanos , Neoplasias Pulmonares/patología , Masculino , Ratones Endogámicos BALB C , Ratones Desnudos , MicroARNs/genética , Fosfatidilinositol 3-Quinasas/metabolismo , Proteínas Proto-Oncogénicas c-akt/metabolismo , Transducción de Señal , Ensayos Antitumor por Modelo de Xenoinjerto
20.
J Cell Physiol ; 234(8): 12956-12963, 2019 08.
Artículo en Inglés | MEDLINE | ID: mdl-30537165

RESUMEN

Breast cancer antiestrogen resistance 4 (BCAR4) is a novel long noncoding RNA. It was originally identified in a screen for genes responsible for the development of resistance to antiestrogens in breast cancer cells and plays a major role in various tumors. However, the clinical diagnostic role of BCAR4 in tumors is not completely understood. This current meta-analysis aimed to comprehensively explore the potential role of BCAR4 as a prognostic biomarker in a number of cancers. Five public databases PubMed, EMBASE, Web of Science, Wiley Online Library, and Medline were used to search for articles. Nine studies comprising 1,293 patients were included in this meta-analysis. The results of analysis showed that BCAR4 expression in human cancer was significantly associated with poor overall survival (hazard ratio [HR] = 1.98, confidence interval [CI]: [1.71-2.29]), p < 0.00001, and high BCAR4 expression was associated with clinical stage (OR and its 95% CI was 3.30 [1.99-5.46], p < 0.00001), distant metastasis (OR = 3.83, 95% CI: 2.15-6.82, p < 0.00001), and lymph node metastasis (OR and its 95% CI was 2.91 [1.62-5.25], p = 0.0004) in patients with cancer. Furthermore, the results revealed the prognostic significance of BCAR4 in gastrointestinal malignancy, breast cancer, and osteosarcoma (HR and its 95% CI were 2.05 [1.56-2.68], p < 0.00001; 1.78 [1.46-2.16], p < 0.00001; and 2.47 [1.41-4.34], p < 0.00001, respectively). This meta-analysis indicated the potential value of BCAR4 as a biomarker for predicting a poor prognosis in patients with cancer.


Asunto(s)
Neoplasias de la Mama/genética , Neoplasias/genética , ARN Largo no Codificante/genética , Biomarcadores de Tumor/genética , Neoplasias de la Mama/diagnóstico , Neoplasias de la Mama/patología , Regulación Neoplásica de la Expresión Génica/genética , Humanos , Metástasis Linfática/genética , Osteosarcoma/genética , Pronóstico
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