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1.
Osteoporos Int ; 35(3): 543-549, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-37921994

RESUMO

Preoperative bone density assessment is necessary to predict screw loosening. The forearm BMD is a useful predictor of BMD-related complications after lumbar operation. Our results show that the forearm BMD is as effective a predictor of screw loosening as the lumbar average HU value. Measurement of the forearm BMD may be a useful adjunct in predicting screw loosening following lumbar fusion. PURPOSE: To determine the relationship between forearm bone mineral density (BMD) and the risk of pedicle screw loosening in patients with lumbar spondylolisthesis. METHODS: We retrospectively evaluated 270 patients who underwent posterior lumbar interbody fusion for lumbar spondylolisthesis. The patients were divided into two groups on the basis of the with or without loose screws: the loosening group and the non-loosening group. The patient's gender, age, BMI, smoking and diabetes histories, and the operative segment were recorded as the basic information. The Hounsfield unit (HU) value for the BMD of the L1-4 lumbar was measured using computed tomography. The patient's distal one-third of the length of the radius and ulna of the non-dominant forearm was chosen as the site for dual-energy X-ray (DXA) bone density testing. RESULTS: The rate of screw loosening was 13% at a minimum 12 months follow-up. Average forearm BMD (0.461 ± 0.1 vs 0.577 ± 0.1, p < 0.001) and mean HU value (L1-4) (121.1 ± 27.3 vs 155.6 ± 32.2, p < 0.001) were lower in the screw loosening group than those in the non-loosening group. In multivariate logistic regression analysis, the forearm BMD (OR 0.840; 95%CI 0.797-0.886) and HU value (L1-4) (OR 0.952; 95%CI 0.935-0.969) were independent risk factor for screw loosening. The area under the curve (AUC) for the forearm BMD and HU value for prediction of pedicle screw loosening was 0.802 and 0.811. The forearm BMD cut-off for predicting pedicle screw loosening was 0.543 (sensitivity, 0.800; specificity, 0.864). CONCLUSIONS: The forearm BMD was an independent risk factor for loosening of the lumbar pedicle screws. The forearm BMD was a valid predictor of pedicle screw loosening in patients undergoing lumbar fusion, as was the CT HU value.


Assuntos
Parafusos Pediculares , Fusão Vertebral , Espondilolistese , Humanos , Densidade Óssea , Espondilolistese/diagnóstico por imagem , Espondilolistese/cirurgia , Antebraço , Estudos Retrospectivos , Parafusos Pediculares/efeitos adversos , Vértebras Lombares/cirurgia , Fusão Vertebral/efeitos adversos , Fusão Vertebral/métodos
2.
Planta ; 258(4): 70, 2023 Aug 25.
Artigo em Inglês | MEDLINE | ID: mdl-37620620

RESUMO

MAIN CONCLUSION: The Cas13a-based multiplex RNA targeting system can be engineered to confer resistance to RNA viruses, whereas the number and expression levels of gRNAs have no significant effect on viral interference. The CRISPR-Cas systems provide adaptive immunity to bacterial and archaeal species against invading phages and foreign plasmids. The class 2 type VI CRISPR/Cas effector Cas13a has been harnessed to confer the protection against RNA viruses in diverse eukaryotic species. However, whether the number and expression levels of guide RNAs (gRNAs) have effects on the efficiency of RNA virus inhibition is unknown. Here, we repurpose CRISPR/Cas13a in combination with an endogenous tRNA-processing system (polycistronic tRNA-gRNA) to target four genes of potato virus Y (PVY) with varying expression levels. We expressed Cas13a and four different gRNAs in potato lines, and the transgenic plants expressing multiple gRNAs displayed similar suppression of PVY accumulation and reduced disease symptoms as those expressing a single gRNA. Moreover, PTG/Cas13a-transformed plants with different expression levels of multiple gRNAs displayed similar resistance to PVY strains. Collectively, this study suggests that the Cas13a-based multiplex RNA targeting system can be utilized to engineer resistance to RNA viruses in plants, whereas the number and expression levels of gRNAs have no significant effect on CRISPR/Cas13a-mediated viral interference in plants.


Assuntos
Potyvirus , Potyvirus/genética , RNA , Sistemas CRISPR-Cas/genética , Plantas Geneticamente Modificadas/genética , Processamento Pós-Transcricional do RNA
3.
Transpl Infect Dis ; 25(2): e14002, 2023 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-36545901

RESUMO

BACKGROUND: Infection is a significant risk factor that impacts for perioperative morbidity and mortality in liver transplantation (LTx) patients and is difficult to evaluate quantitatively in the early posttransplantation period. Thus, a biomarker to assess the risk of infection and the prognosis of the recipient is highly desirable. METHODS: A total of 128 consecutive patients with end-stage liver diseases undergoing LTx between January 1, 2020 and December 31, 2021, at the First Affiliated Hospital of Zhejiang University School of Medicine, were screened retrospectively. Graft preservation fluid and blood samples were collected for culture, and other perioperative laboratory examination results were recorded, for assessment of infection status. RESULTS: After a follow-up period of 30 days, the survival rate among the 128 LTx recipients was 94.5%. Multivariable regression analysis showed that the logarithmically transformed neutrophil-to-lymphocyte ratio (NLR) (HR = 3.548, 95% CI: ; p = .041) on post-LTx day 1 and graft preservation fluid culture positivity (HR = 12.032, 95% CI: ; p = .006) were independent predictive factors for early prognosis after LTx. CONCLUSIONS: Positive graft preservation fluid culture and the logarithmically transformed NLR on post-LTx day 1 were independent predictive factors for early prognosis after LTx. The logarithmically transformed NLR could provide an earlier indication than culture results in clinical practice.


Assuntos
Transplante de Fígado , Humanos , Transplante de Fígado/métodos , Estudos Retrospectivos , Prognóstico , Fatores de Risco , Linfócitos
4.
Angew Chem Int Ed Engl ; 62(6): e202217045, 2023 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-36517419

RESUMO

Chiral boron/nitrogen doped multiple resonance thermally activated delayed fluorescence (MR-TADF) emitters are promising for highly efficient and color-pure circularly polarized organic light-emitting diodes (CP-OLEDs). Herein, we report two pairs of MR-TADF materials (Czp-tBuCzB, Czp-POAB) based on planar chiral paracyclophane with photoluminescence quantum yields of up to 98 %. The enantiomers showed symmetric circularly polarized photoluminescence spectra with dissymmetry factors |gPL | of up to 1.6×10-3 in doped films. Meanwhile, the sky-blue CP-OLEDs with (R/S)-Czp-tBuCzB showed an external quantum efficiency of 32.1 % with the narrowest full-width at half-maximum of 24 nm among the reported CP-OLEDs, while the devices with (R/S)-Czp-POAB displayed the first nearly pure green CP electroluminescence with |gEL | factors at the 10-3 level. These results demonstrate the incorporation of planar chirality into MR-TADF emitter is a reliable strategy for constructing of efficient CP-OLEDs.

5.
Plant Dis ; 105(11): 3344-3348, 2021 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-34096772

RESUMO

Potato virus A (PVA) and potato virus Y (PVY) are two members of genus Potyvirus infecting potato crops worldwide. Host resistance offers an economical and effective means for the control or management of these viruses. In this study, 20 potato clones were screened for their resistance against PVA and PVY by mechanical or graft inoculation assay, and were explored for the relationship between extreme resistance genes Ra and Ry by the detection of molecular markers linked to Ryadg, Rysto, and Rychc. Six clones, including Barbara, Jizhangshu 8, Longshu 7, Longshu 8, M6, and Solara, were found to be extremely resistant to both PVA and PVY; three clones (AC142, Eshu 3, and Shepody) were deemed to be extremely resistant to PVA but susceptible to PVY. To further reveal the inheritance of the extreme resistance (ER) against PVA, a tetraploid F1 population of Barbara × F58050 (susceptible to both PVY and PVA) and a tetraploid BC1 population of BF145 (a PVA-resistant but PVY-susceptible progeny of Barbara × F58050) × F58050 were obtained. Phenotyping of the F1 and BC1 populations by graft inoculation with PVA showed segregation ratios of 3:1 and 1:1 (resistant:susceptible), respectively. These results suggest that two independent loci control ER against PVA in Barbara: one confers ER to both PVA and PVY and the other confers ER to PVA only. The deduced genotype of Barbara is RyryryryRararara.


Assuntos
Potyvirus , Solanum tuberosum , Genótipo , Doenças das Plantas , Potyvirus/genética , Solanum tuberosum/genética
6.
Molecules ; 26(9)2021 Apr 29.
Artigo em Inglês | MEDLINE | ID: mdl-33946904

RESUMO

Phosphorescent iridium(III) complexes have been widely researched for the fabrication of efficient organic light-emitting diodes (OLEDs). In this work, three red Ir(III) complexes named Ir-1, Ir-2, and Ir-3, with Ir-S-C-S four-membered framework rings, were synthesized efficiently at room temperature within 5 min using sulfur-containing ancillary ligands with electron-donating groups of 9,10-dihydro-9,9-dimethylacridine, phenoxazine, and phenothiazine, respectively. Due to the same main ligand of 4-(4-(trifluoromethyl)phenyl)quinazoline, all Ir(III) complexes showed similar photoluminescence emissions at 622, 619, and 622 nm with phosphorescence quantum yields of 35.4%, 50.4%, and 52.8%, respectively. OLEDs employing these complexes as emitters with the structure of ITO (indium tin oxide)/HAT-CN (dipyra-zino[2,3-f,2',3'-h]quinoxaline-2,3,6,7,10,11-hexacarbonitrile, 5 nm)/TAPC (4,4'-cyclohexylidenebis[N,N-bis-(4-methylphenyl)aniline], 40 nm)/TCTA (4,4″,4″-tris(carbazol-9-yl)triphenylamine, 10 nm)/Ir(III) complex (10 wt%): 2,6DCzPPy (2,6-bis-(3-(carbazol-9-yl)phenyl)pyridine, 10 nm)/TmPyPB (1,3,5-tri(mpyrid-3-yl-phenyl)benzene, 50 nm)/LiF (1 nm)/Al (100 nm) achieved good performance. In particular, the device based on complex Ir-3 with the phenothiazine unit showed the best performance with a maximum brightness of 22,480 cd m-2, a maximum current efficiency of 23.71 cd A-1, and a maximum external quantum efficiency of 18.1%. The research results suggest the Ir(III) complexes with a four-membered ring Ir-S-C-S backbone provide ideas for the rapid preparation of Ir(III) complexes for OLEDs.

7.
Chemistry ; 25(22): 5623-5642, 2019 Apr 17.
Artigo em Inglês | MEDLINE | ID: mdl-30648301

RESUMO

Thermally activated delayed fluorescence (TADF) is one of the most intriguing and promising discoveries towards realization of highly-efficient organic light emitting diodes (OLED) utilizing small molecules as emitters. It has the capability of manifesting all excitons generated during the electroluminescent processes, consequently achieving 100 % of internal quantum efficiency. Since the report of the first efficient OLED based on a TADF small molecule in 2012 by Adachi et al., the quest for optimal TADF materials for OLED application has never stopped. Various TADF molecules bearing different design concepts and strategies have been designed and produced, with the aim to boost the overall performances of corresponding OLEDs. In this minireview, the general principles of TADF molecular design based on three basic categories of TADF species: twisted intramolecular charge transfer (TICT), through-space charge transfer (TSCT) and multi-resonance induced TADF (MR-TADF) are discussed in detail. Several key aspects with respect to each category, as well as some effective methods to enhance the efficiency of TADF materials and corresponding OLEDs from the molecular engineering perspectives, are summarized and discussed to exhibit a general landscape of TADF molecular design to a wide variety of scientific researchers within this particular disciplinary area.

9.
Ann Vasc Surg ; 48: 251.e5-251.e10, 2018 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-29221838

RESUMO

BACKGROUND: Aneurysm of splenic artery (SA) which arises from the superior mesenteric artery (SMA) is a very rare condition. The aim of this study was to present our experience with 2 such patients treated by coil embolization. METHODS: A 33-year-old man and a 61-year-old woman were incidentally identified with aneurysms of the SA which arose from the SMA. Endovascular therapy of coil embolization was chosen to treat the aneurysm. RESULTS: Follow-up computed tomography showed no change in the location of the coils and occlusion of majority of the aneurysm sac. The 2 patients have been doing well during a 26-month and 10-month follow-up period, respectively. CONCLUSIONS: Combined with the experience of the previous literature, we think coil embolization can be cost-effective and minimally invasive in selected cases, depending on the morphology and site of the lesion.


Assuntos
Aneurisma/terapia , Embolização Terapêutica/instrumentação , Artéria Mesentérica Superior/anormalidades , Artéria Esplênica/anormalidades , Malformações Vasculares/complicações , Adulto , Idoso , Aneurisma/diagnóstico por imagem , Aneurisma/etiologia , Angiografia por Tomografia Computadorizada , Feminino , Humanos , Masculino , Artéria Mesentérica Superior/diagnóstico por imagem , Pessoa de Meia-Idade , Artéria Esplênica/diagnóstico por imagem , Resultado do Tratamento , Malformações Vasculares/diagnóstico por imagem
10.
J Acoust Soc Am ; 140(4): 2720, 2016 10.
Artigo em Inglês | MEDLINE | ID: mdl-27794333

RESUMO

Compact loudspeaker arrays have wide potential applications as portable personal audio systems that can project sound energy to specified regions. It is meaningful to investigate the scattering effects on the array performance since the scattering of the users' heads is inevitable in practice. A five-channel compact endfire array is established and the regularized acoustic contrast control method is evaluated for the scenarios of one moving listener and one listener fixed in the bright zone while another listener moves along the evaluation region. Both simulations and experiments verify that the scattering has limited influence on the directivity of the endfire array.

11.
Guang Pu Xue Yu Guang Pu Fen Xi ; 35(4): 1030-2, 2015 Apr.
Artigo em Japonês | MEDLINE | ID: mdl-26197596

RESUMO

Atmospheric particles have become the primary atmospheric pollutions, of which the heavy metals, owing to non-degradability and hysteresis, a serious threat to human life and natural environment, have become a hot research issue currently. The analytical methods of heavy metals in atmospheric particles are summarized in the present review, including atomic absorption spectrometry, inductively coupled plasma atomic emission spectrometry, inductively coupled plasma mass spectrometry, neutron activation analysis, fluorescence spectrometry, glow discharge atomic emission spectrometry, microwave plasma atomic emission spectrometry, and laser induced breakdown spectroscopy, and some proposals are tried to make for improving the shortcomings of these technologies: continuum source Atomic absorption spectrometry for simultaneously measuring multi-elements, atomic emission spectrometry for direct determination of particulates, high resolution laser ablation inductively coupled plasma mass spectrometry for determination of solid samples, low scattering synchrotron fluorescence spectrum for determination of atmospheric particulate matter and k0 neutron activation analysis for determination of radioactive elements in the troposphere Analysis techniques of heavy metals in atmospheric particulate matter are promoted to develop toward being real-time, fast, low- detection-limit, direct-measurement and simple-operation due to the spatial and temporal distribution difference of the heavy metals in atmospheric particles and human requirement for improvement of ambient air quality as well as rapid development of modern instrument science and technology.


Assuntos
Poluentes Atmosféricos/análise , Metais Pesados/análise , Material Particulado/análise , Espectrofotometria Atômica , Humanos , Isótopos , Limite de Detecção , Análise Espectral
12.
Artigo em Zh | MEDLINE | ID: mdl-26080530

RESUMO

Parasitic infections, especially the gastrointestinal and lung nematode infections, are most common in livestock in temperate areas, and it is the major constraints affecting livestock production. In grazing season, outdoor activities of animals cause inconvenience to the application of antiparasitic drugs. Therefore, controlled drug delivery systems can prolong the effect time and reduce the difficulty of drug administration. This review summarizes several types of long-term delivery devices and dosage forms including intraruminal devices, long-acting injectables, in-situ forming implants, novel microparticles and nanoparticles. Their advantages and drawbacks are dicussed.


Assuntos
Sistemas de Liberação de Medicamentos , Doenças Parasitárias em Animais/tratamento farmacológico , Drogas Veterinárias/administração & dosagem , Animais , Gado/parasitologia , Nanopartículas , Infecções por Nematoides/tratamento farmacológico , Infecções por Nematoides/veterinária , Drogas Veterinárias/uso terapêutico
13.
Artigo em Zh | MEDLINE | ID: mdl-26245118

RESUMO

OBJECTIVE: To study the metabolism of niclosamide in plasma, and the protective effect of its oral administration on Schistosoma japonicum cercarial invasion in mice. METHODS: Twenty-four female Kunming mice were randomly divided into 8 groups, each with 3 mice. Each mouse was treated orally with 120 mg niclosamide per kilogram of body weight (120 mg/kg). The plasma samples were collected at 0.25, 0.5, 1, 2, 4, 8, 16, and 24 h after treatment by retro-orbital blood sampling. The blood drug concentration was determined by HPLC. The pharmacokinetics parameters were calculated such as peak concentration (Cmax), peak time (Tmax), mean residence time (MRT), and elimination half life (T½). Thirty Kunming mice were randomly divided into 6 groups. Among them, 5 groups were treated orally with 40, 80, 120, 160, and 200 mg/kg niclosamide, respectively. The remaining untreated group served as control. One hour post-treatment, each mouse was infected with 40 ± 2 Schistosoma japonicum cercariae. Another 35 mice treated with 200 mg/kg niclosamide were randomly divided into 7 groups. Mice in each group were infected with 40 ± 2 S. japonicum cercariae on 0.25, 1, 4, 8, 12, and 24 h after treatment, named as group A, B, C, D, E, and F. Five untreated mice served as control (group G). All mice were sacrificed 35 days post-infection. Mean worm burden and worm reduction were calculated. RESULTS: At a dose of 120 mg/kg niclosamide, the blood drug concentration was (0.40 ± 0.28) µg/ml at 0.25 h post-treatment, reached a peak of (0.91 ± 0.34) µg/ml at 1 h, and decreased to (0.49 ± 0.38) µg/ml at 2 h, and got close to 0 at 16 h. The mean residence time (MRT) in mice was (6.78 ± 1.47) h, and the elimination half time was (6.80 ± 7.05) h. No significant difference was found in worm burden between different dose groups and control group (P > 0.05). The mean worm burden in group A was significantly lower than that of the control (P < 0.05) with a mean worm reduction of 79.1%. And there was no significant difference in worm burden between other groups and the control (P > 0.05). CONCLUSIONS: The blood drug concentration increases rapidly by gavage administration of 120 mg/kg niclosamide, reaching to the maximum concentration at 1 h post-treatment. It shows a certain potective effect of oral administration of 200 mg/kg niclosamide on Schistosoma japonicum cercarial invasion at 0.25 h after treatment.


Assuntos
Cercárias , Schistosoma japonicum , Esquistossomose Japônica , Administração Oral , Animais , Modelos Animais de Doenças , Feminino , Camundongos , Niclosamida , Resultado do Tratamento
14.
Hepatobiliary Pancreat Dis Int ; 11(5): 545-8, 2012 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-23060403

RESUMO

BACKGROUND: Crigler-Najjar syndrome type I (CNS I) is a very rare autosomal recessive inherited disease that liver transplantation can properly deal with. METHODS: We present one case of an 18-month-old child with CNS I diagnosed by clinical findings and genetic detecting. LTx was performed 5 days after kernicterus broke out and neurological symptoms were successfully reversed. RESULT: Magnetic resonance imaging and magnetic resonance spectroscopy showed encouraging results that brain pathology had a trend to return to normal in 1-year follow-up, combined with electroencephalogram and motor development estimate studies. CONCLUSIONS: Liver transplantation can cure CNS I with reversible neurological symptoms to some extent in time. Magnetic resonance spectroscopy may be a future option of predicting brain conditions and selecting suitable patients with CNS I for transplantation.


Assuntos
Síndrome de Crigler-Najjar/cirurgia , Transplante de Fígado/métodos , Bilirrubina/sangue , Síndrome de Crigler-Najjar/sangue , Síndrome de Crigler-Najjar/patologia , Humanos , Recém-Nascido , Imageamento por Ressonância Magnética , Masculino
15.
Hortic Res ; 9: uhac159, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36204208

RESUMO

Plant viruses recruit multiple host factors for translation, replication, and movement in the infection process. The loss-of-function mutation of the susceptibility genes will lead to the loss of susceptibility to viruses, which is referred to as 'recessive resistance'. Essential for potexvirus Accumulation 1 (EXA1) has been identified as a susceptibility gene required for potexvirus, lolavirus, and bacterial and oomycete pathogens. In this study, EXA1 knockdown in potato (StEXA1) was found to confer novel resistance to potato virus Y (PVY, potyvirus) in a strain-specific manner. It significantly compromised PVYO accumulation but not PVYN:O and PVYNTN. Further analysis revealed that StEXA1 is associated with the HC-Pro of PVY through a member of eIF4Es (StnCBP). HC-ProO and HC-ProN, two HC-Pro proteins from PVYO and PVYN, exhibited strong and weak interactions with StnCBP, respectively, due to their different spatial conformation. Moreover, the accumulation of PVYO was mainly dependent on the stress granules (SGs) induced by StEXA1 and StnCBP, whereas PVYN:O and PVYNTN could induce SGs by HC-ProN independently through an unknown mechanism. These results could explain why StEXA1 or StnCBP knockdown conferred resistance to PVYO but not to PVYN:O and PVYNTN. In summary, our results for the first time demonstrate that EXA1 can act as a susceptibility gene for PVY infection. Finally, a hypothetical model was proposed for understanding the mechanism by which StEXA1 interacts with StnCBP to facilitate PVY accumulation in potato through the SG-dependent RNA regulatory pathway.

16.
Front Plant Sci ; 13: 946873, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36003826

RESUMO

Due to their limited coding capacity, plant viruses have to depend on various host factors for successful infection of the host. Loss of function of these host factors will result in recessively inherited resistance, and therefore, these host factors are also described as susceptibility genes or recessive resistance genes. Most of the identified recessive resistance genes are members of the eukaryotic translation initiation factors 4E family (eIF4E) and its isoforms. Recently, an eIF4E-type gene, novel cap-binding protein (nCBP), was reported to be associated with the infection of several viruses encoding triple gene block proteins (TGBps) in Arabidopsis. Here, we, for the first time, report that the knockdown of nCBP in potato (StnCBP) compromises the accumulation of potato virus S (PVS) but not that of potato virus M (PVM) and potato virus X (PVX), which are three potato viruses encoding TGBps. Further assays demonstrated that StnCBP interacts with the coat proteins (CPs) of PVS and PVM but not with that of PVX, and substitution of PVS CP in the PVS infectious clone by PVM CP recovered the virus infection in StnCBP-silenced transgenic plants, suggesting that the recognition of PVS CP is crucial for StnCBP-mediated recessive resistance to PVS. Moreover, the knockdown of nCBP in Nicotiana benthamiana (NbnCBP) by virus-induced gene silencing suppressed PVX accumulation but not PVM, while NbnCBP interacted with the CPs of both PVX and PVM. Our results indicate that the nCBP orthologues in potato and tobacco have conserved function as in Arabidopsis in terms of recessive resistance against TGB-encoding viruses, and the interaction between nCBP and the CP of TGB-encoding virus is necessary but not sufficient to determine the function of nCBP as a susceptibility gene.

17.
Infect Drug Resist ; 15: 2469-2474, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35592105

RESUMO

Purpose: To evaluate the response and safety of an inactivated vaccine (Sinovac Life Sciences Co., Ltd., Beijing, China) for coronavirus disease 2019 (COVID-19) in liver transplant (LTx) recipients from China. Patients and Methods: Thirty-five recipients post LTx from the First Affiliated Hospital of Zhejiang University School of Medicine who received inactivated vaccine from June to October 2021 were screened. Information regarding vaccine side effects and clinical data were collected. Results: Thirty-five LTx recipients were enrolled, with a mean age of 46 years, and most patients were male (30, 85.71%). All the participants had a negative history of COVID-19 infection. Predictors for negative response in the recipients were interleukin-2 receptor (IL-2R) induction during LTx, shorter time post LTx and application of a derivative from mycophenolate acid (MPA). No serious adverse events were observed during the progress of vaccination or after the vaccination. Conclusion: LTx recipients have a substantially partial immunological response to the inactivated vaccine for COVID-19. IL-2R induction during LTx, a shorter time post LTx and the application of a derivative from MPA seem to be predictors for a negative serological immunoglobulin G (IgG) antibody response in recipients. The findings require booster vaccination in these LTx recipients.

18.
Int J Mol Med ; 50(5)2022 11.
Artigo em Inglês | MEDLINE | ID: mdl-36222304

RESUMO

Integrins allow cells to adhere to the extracellular matrix and promote the recruitment of other integrins, resulting in the formation of focal adhesion sites at the binding sites. Focal adhesion sites play essential roles in the assembly of the cytoskeleton and are vital in shaping the structure of cells. They also play other regulatory roles by influencing numerous biological functions, such as cell proliferation and apoptosis. Hydrogen peroxide­inducible clone 5 (Hic­5) is a member of the Paxillin family of proteins and is an adhesive plaque scaffolding protein. Its expression can be detected in both vascular and smooth muscle cells. Thus, it plays an essential role in vascular remodeling, as well as in fibrotic diseases. Hic­5 functions as a coactivator of steroid receptors, thus playing a role in steroid hormone­dependent diseases. It also plays a vital role in the invasive metastasis of various types of cancer. Moreover, several studies have demonstrated that Hic­5 plays a critical role in transcriptional regulation, as well as in numerous signaling pathways. Therefore, the inhibition of the functions of Hic­5 may prevent the development or halt the progression of several diseases. Its use as a therapeutic target in future investigations may thus aid in the treatment of several diseases, including various types of cancer. The present review article focused on the expression and functions of Hic­5 in different organs, with the aim of highlighting novel possibilities for future research.


Assuntos
Peróxido de Hidrogênio , Integrinas , Adesão Celular/fisiologia , Proteína-Tirosina Quinases de Adesão Focal/metabolismo , Hormônios , Peróxido de Hidrogênio/metabolismo , Integrinas/metabolismo , Paxilina/metabolismo , Fosforilação
19.
ACS Appl Mater Interfaces ; 13(47): 56413-56419, 2021 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-34784463

RESUMO

Direct emission of circularly polarized light from organic light-emitting diodes (OLEDs) is a research hotspot as it could increase the efficiency and significantly simplify device architecture of OLED-based 3D displays. In this study, R/S-OBS-Cz and R/S-OBS-TCz with axial chirality were efficiently prepared by using a stable chiral octahydro-binaphthol unit, carbazole/3,6-ditert-butylcarbazole donors, and a 5,5,10,10-tetraoxide acceptor. The chiral unit-acceptor-donor structure provides them not only thermally activated delayed fluorescence (TADF) characteristics with minor singlet-triplet energy gaps of 0.04 and 0.05 eV but also obvious circularly polarized photoluminescence (CPPL) phenomenon with dissymmetry factors of 8.7 × 10-4 and 6.4 × 10-4 in codoped films. Meanwhile, the CP-OLEDs prepared by enantiomers exhibit good device performances with the maximum external quantum efficiency reaching 20.3% and ideal efficiency roll-off as well as obvious CPEL properties with a |gEL| factor up to 1.0 × 10-3.

20.
Guang Pu Xue Yu Guang Pu Fen Xi ; 30(11): 2971-5, 2010 Nov.
Artigo em Zh | MEDLINE | ID: mdl-21284165

RESUMO

The detection of the quality of honey and the differentiation of adulteration are very important for quality and safety assurance. Traditionally used chemical methods were expensive and complicated, therefore they are not suitable for the requirement of wide-scale detection. In the past decade, the detection technology of honey developed with a trend of fast and high throughput detection. Spectroscopy has the fast and non-contact characteristic, and was widely used in petrifaction. This technology also has the potential for application in honey analysis. In the present study, the progress in quantitative and qualitative analysis of honey by near infrared spectroscopy (NIR) and mid infrared spectroscopy (MIR) is reviewed. The application of this two spectroscopy methods to honey detection refers to several aspects, such as quality control analysis, determination of botanical origin, determination of geographical origin and detection of adulteration. The detailed information of the detection of honey by NIR and MIR spectroscopy was analyzed, containing detection principle, technology path, accuracy, influence factors, and the development trend.


Assuntos
Mel/análise , Contaminação de Alimentos , Controle de Qualidade , Espectrofotometria Infravermelho , Espectroscopia de Luz Próxima ao Infravermelho
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