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1.
Clin Nucl Med ; 2024 Aug 28.
Artículo en Inglés | MEDLINE | ID: mdl-39192517

RESUMEN

ABSTRACT: We described the findings of 68Ga-FAPI-04 PET/CT of psoriatic arthritis in a 56-year-old man. Intense FAPI uptake was observed alongside the spine and in the joints of bilateral feet and the right hip. 68Ga-FAPI PET/CT is potentially valuable for the evaluation of join involvement and disease activity in patients with psoriasis.

2.
Biomolecules ; 14(7)2024 Jun 27.
Artículo en Inglés | MEDLINE | ID: mdl-39062481

RESUMEN

The subcellular localization of messenger RNAs (mRNAs) is a pivotal aspect of biomolecules, tightly linked to gene regulation and protein synthesis, and offers innovative insights into disease diagnosis and drug development in the field of biomedicine. Several computational methods have been proposed to predict the subcellular localization of mRNAs within cells. However, there remains a deficiency in the accuracy of these predictions. In this study, we propose an mRCat predictor based on the gradient boosting tree algorithm specifically to predict whether mRNAs are localized in the nucleus or in the cytoplasm. This predictor firstly uses large language models to thoroughly explore hidden information within sequences and then integrates traditional sequence features to collectively characterize mRNA gene sequences. Finally, it employs CatBoost as the base classifier for predicting the subcellular localization of mRNAs. The experimental validation on an independent test set demonstrates that mRCat obtained accuracy of 0.761, F1 score of 0.710, MCC of 0.511, and AUROC of 0.751. The results indicate that our method has higher accuracy and robustness compared to other state-of-the-art methods. It is anticipated to offer deep insights for biomolecular research.


Asunto(s)
ARN Mensajero , ARN Mensajero/genética , ARN Mensajero/metabolismo , Algoritmos , Humanos , Biología Computacional/métodos , Núcleo Celular/metabolismo , Núcleo Celular/genética , Citoplasma/metabolismo , Citoplasma/genética
3.
Cancer Rep (Hoboken) ; 7(3): e2007, 2024 03.
Artículo en Inglés | MEDLINE | ID: mdl-38425247

RESUMEN

BACKGROUND: Insufficient understanding of the pathogenesis and tumor immunology of triple-negative breast cancer (TNBC) has limited the development of immunotherapy. The importance of tumor microenvironment (TME) in immunotyping, prognostic assessment and immunotherapy efficacy of cancer has been emphasized, however, potential immunogenic cell death (ICD) related genes function in TME of TNBC has been rarely investigated. AIMS: To initially explore the role and related mechanisms of ICD in TNBC, especially the role played in the TME of TNBC, and to identify different relevant subtypes based on ICD, and then develop an ICD-related risk score to predict each TNBC patient TME status, prognosis and immunotherapy response. METHODS AND RESULTS: In this study, we identified distinct ICD-related modification patterns based on 158 TNBC cases in the TCGA-TNBC cohort. We then investigated the possible correlation between ICD-related modification patterns and TME cell infiltration characteristics in TNBC. By using univariate Cox and least absolute shrinkage and selection operator (LASSO) regression analysis, we created a risk scoring system (ICD score) to quantifiably evaluate the impact of ICD-related modification patterns in individual TNBC patient. Two different ICD-related modification patterns were found with significant differences in immune infiltration. Lower ICD score was correlated with higher immune infiltration, tumor mutational burden and significantly enriched in immune-related pathways, indicating a strong ability to activate immune response, which might account for relatively favorable prognosis of TNBC patients and could serve as a predictor to select suitable candidates for immunotherapy. We used two independent cohorts, GSE58812 cohort and Metabric cohort to validate prognosis and immunohistochemistry for preliminary in vitro validation. CONCLUSION: This study evidenced that the ICD-related modification patterns might exert pivotal roles in the immune infiltration landscape of TNBC and ICD score might act as potential predictors of prognostic assessment and immunotherapy response. This research provides unique insights for individualize immune treatment strategies and promising immunotherapy candidates screening.


Asunto(s)
Neoplasias de la Mama Triple Negativas , Humanos , Neoplasias de la Mama Triple Negativas/genética , Neoplasias de la Mama Triple Negativas/terapia , Muerte Celular Inmunogénica , Pronóstico , Inmunoterapia , Factores de Riesgo , Microambiente Tumoral
4.
Clin Nucl Med ; 48(9): e436-e437, 2023 Sep 01.
Artículo en Inglés | MEDLINE | ID: mdl-37351879

RESUMEN

ABSTRACT: Pulmonary enteric adenocarcinoma(PEAC) is a rare variant of pulmonary adenocarcinoma. We herein report FDG PET/CT findings of PEAC in a 76-year-old woman. The images showed widespread opacities in both lungs with intense FDG uptake. The pathology revealed pulmonary enteric adenocarcinoma.


Asunto(s)
Adenocarcinoma del Pulmón , Neoplasias Pulmonares , Femenino , Humanos , Anciano , Tomografía Computarizada por Tomografía de Emisión de Positrones , Fluorodesoxiglucosa F18 , Neoplasias Pulmonares/diagnóstico por imagen , Neoplasias Pulmonares/patología , Adenocarcinoma del Pulmón/diagnóstico por imagen , Adenocarcinoma del Pulmón/patología , Tomografía de Emisión de Positrones
5.
Neural Regen Res ; 18(8): 1763-1769, 2023 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-36751803

RESUMEN

Destruction of the blood-brain barrier is a critical component of epilepsy pathology. Several studies have demonstrated that sphingosine 1-phosphate receptor 1 contributes to the modulation of vascular integrity. However, its effect on blood-brain barrier permeability in epileptic mice remains unclear. In this study, we prepared pilocarpine-induced status epilepticus models and pentylenetetrazol-induced epilepsy models in C57BL/6 mice. S1P1 expression was increased in the hippocampus after status epilepticus, whereas tight junction protein expression was decreased in epileptic mice compared with controls. Intraperitoneal injection of SEW2871, a specific agonist of sphingosine-1-phosphate receptor 1, decreased the level of tight junction protein in the hippocampus of epileptic mice, increased blood-brain barrier leakage, and aggravated the severity of seizures compared with the control. W146, a specific antagonist of sphingosine-1-phosphate receptor 1, increased the level of tight junction protein, attenuated blood-brain barrier disruption, and reduced seizure severity compared with the control. Furthermore, sphingosine 1-phosphate receptor 1 promoted the generation of interleukin-1ß and tumor necrosis factor-α and caused astrocytosis. Disruption of tight junction protein and blood-brain barrier integrity by sphingosine 1-phosphate receptor 1 was reversed by minocycline, a neuroinflammation inhibitor. Behavioral tests revealed that sphingosine 1-phosphate receptor 1 exacerbated epilepsy-associated depression-like behaviors. Additionally, specific knockdown of astrocytic S1P1 inhibited neuroinflammatory responses and attenuated blood-brain barrier leakage, seizure severity, and epilepsy-associated depression-like behaviors. Taken together, our results suggest that astrocytic sphingosine 1-phosphate receptor 1 exacerbates blood-brain barrier disruption in the epileptic brain by promoting neuroinflammation.

6.
Small ; 19(17): e2206544, 2023 04.
Artículo en Inglés | MEDLINE | ID: mdl-36710248

RESUMEN

Fluorescence imaging in the second near-infrared window (NIR-II, 1000-1700 nm) provides a powerful tool for in vivo structural and functional imaging in deep tissue. However, the lack of biocompatible contrast agents with bright NIR-II emission has hindered its application in fundamental research and clinical trials. Herein, a liposome encapsulation strategy for generating ultrabright liposome-cyanine dyes by restricting dyes in the hydrophobic pockets of lipids and inhibiting the aggregation, as corroborated by computational modeling, is reported. Compared with free indocyanine green (ICG, an US Food and Drug Administration-approved cyanine dye), liposome-encapsulated ICG (S-Lipo-ICG) shows a 38.7-fold increase in NIR-II brightness and enables cerebrovascular imaging at only one-tenth dose over a long period (30 min). By adjusting the excitation wavelength, two liposome-encapsulated cyanine dyes (S-Lipo-ICG and S-Lipo-FD1080) enable NIR-II dual-color imaging. Moreover, small tumor nodules (2-5 mm) can be successfully distinguished and removed with S-Lipo-ICG image-guided tumor surgery in rabbit models. This liposome encapsulation maintains the metabolic pathway of ICG, promising for clinical implementation.


Asunto(s)
Colorantes , Neoplasias , Animales , Conejos , Colorantes/química , Liposomas , Verde de Indocianina/química , Medios de Contraste , Imagen Óptica/métodos , Colorantes Fluorescentes
7.
Ideggyogy Sz ; 75(11-12): 369-375, 2022 Nov 30.
Artículo en Inglés | MEDLINE | ID: mdl-36541149

RESUMEN

Trigeminal neuralgia is a severe neuropathic disorder, affecting the distribution area of the trigeminal nerve and often impairs the quality of life of patients. More and more scholars agree that one of the pathogenesis of trigeminal neuralgia is due to the demyelinating lesion caused by vascular compression or arachnoid bundle wrapping on the root exit zone of trigeminal nerve. In this regard, the most effective method is microvascular decompression, which can relieve the compression of the offending vessels and the thickened arachnoid on the trigeminal nerve. However, it still has some disadvantages, such as the possibility of fatal complications. In recent years, with the advancement of neurosurgical treatment technology, new progress has been made in microvascular decompression. This article mainly introduces the surgical techniques and new methods of the microvascular decompression.


Asunto(s)
Cirugía para Descompresión Microvascular , Neuralgia del Trigémino , Humanos , Cirugía para Descompresión Microvascular/efectos adversos , Cirugía para Descompresión Microvascular/métodos , Neuralgia del Trigémino/cirugía , Neuralgia del Trigémino/etiología , Calidad de Vida , Nervio Trigémino/cirugía , Procedimientos Neuroquirúrgicos/efectos adversos , Procedimientos Neuroquirúrgicos/métodos , Descompresión Quirúrgica/efectos adversos , Descompresión Quirúrgica/métodos
8.
Cardiol Res Pract ; 2022: 5408063, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35600332

RESUMEN

The treatment of chronic stable heart failure (CSHF) with integrated traditional Chinese and Western medicine has been of wide concern. We mainly discuss the clinical efficacy of TCM decoction combined with acupuncture and moxibustion (A&M) in CSHF treatment on the basis of syndrome differentiation and treatment (SDT). The control group was given conventional cardiac rehabilitation (CCR), and the treatment group was given TCM decoction combined with A&M treatment based on SDT on the basis of conventional cardiac rehabilitation. The clinical efficacy and cardiopulmonary exercise testing (CPET) indicators were evaluated. Left ventricular ejection fraction (LVEF), NT-proBNP, myocardial ischemia threshold (MIT), and 6-minute walking distance (6MWD) were measured by ultrasound, ELISA, electrocardiogram, and 6MWD test. After treatment, the clinical efficacy, LVEF, and 6MWD of the treatment group were better than in the control group. The NT-proBNP plasma level and MIT in the treatment group were lower than in the control group. The treatment group had enhanced AT, VO2 Peak, VO2 Peak/HR, and Peak power and decreased resting systolic pressure and peak systolic pressure, and the difference was statistically significant. Dialectical comprehensive treatment of TCM could effectively improve cardiac function and clinical treatment effect, which was worthy of clinical application.

9.
Nutrients ; 14(3)2022 Jan 18.
Artículo en Inglés | MEDLINE | ID: mdl-35276768

RESUMEN

The association between dietary copper intake and the risk of stroke is unknown. We included a total of 10,550 participants from the National Health and Nutrition Examination Survey (NHANES) 2013−2018. Two 24-h dietary recalls and a standard questionnaire were used to determine copper intake and stroke, respectively. We used logistic regression models to estimate the associations between dietary copper intake and the risk of stroke. The nearest-neighbor propensity score matching (PSM) with a ratio of 1:2 was used to reduce selection bias. The non-linear relationship was explored with restricted cubic splines (RCS). The correlation between copper intake and baseline characteristics was detected by the Pearson correlation coefficient. The median dietary copper intake was 1.072 mg/day (IQR = 1.42−0.799). Approximately 3.8% (399) of the participants had a history of stroke. A multivariate logistic regression analysis before and after matching showed that subjects in the higher quartile had significantly lower odds of stroke compared with subjects in the first quartile of copper intake. A stratified analysis showed that copper intake was a significant protective factor for women, individuals <65 years old, individuals with hypertension, individuals who smoke, and diabetic stroke patients. The RCS models showed an L-shaped nonlinear relationship (p for nonlinear < 0.001) between copper intake and stroke. Our results suggested that increased dietary copper intake was associated with a lower risk of stroke.


Asunto(s)
Cobre , Accidente Cerebrovascular , Adulto , Anciano , Estudios de Casos y Controles , Femenino , Humanos , Modelos Logísticos , Encuestas Nutricionales , Accidente Cerebrovascular/epidemiología , Accidente Cerebrovascular/etiología
10.
Int J Biol Macromol ; 202: 529-538, 2022 Mar 31.
Artículo en Inglés | MEDLINE | ID: mdl-35066019

RESUMEN

The pro-inflammatory cytokine interleukin-17A (IL-17A) is a key driver of multiple inflammatory and immune disorders. Therapeutic antibodies targeting IL-17A have been proven effective in treating patients with these diseases; however, large variations in clinical outcomes have been observed with different antibodies. In this study, we developed HB0017, a novel monoclonal antibody that targets human IL-17A. HB0017 specifically and strongly bound to human, cynomolgus monkey, and mouse IL-17A at the physiological interface with the IL-17A receptor. In human and monkey cells, HB0017 potently antagonized the functions of IL-17A through competitive binding. HB0017 functioned equivalently to that of clinically approved antibodies in terms of therapeutic efficacy for inflammatory disorders and psoriasis in a mouse model. The results indicate that HB0017 may be an alternative biological therapy for treating patients with inflammation and autoimmune diseases.


Asunto(s)
Enfermedades Autoinmunes , Psoriasis , Animales , Anticuerpos Monoclonales/farmacología , Anticuerpos Monoclonales/uso terapéutico , Enfermedades Autoinmunes/tratamiento farmacológico , Humanos , Interleucina-17 , Macaca fascicularis/metabolismo , Ratones , Psoriasis/tratamiento farmacológico
11.
Int J Gen Med ; 14: 4405-4411, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34408479

RESUMEN

OBJECTIVE: The purpose of this study is to investigate the risk factors of epilepsy based on the National Health and Nutrition Examination Survey (NHANES). METHODS: The data in this study was obtained from the NHANES database between 2013 and 2018. It included 14,290 participants aged between 20 and 80. We defined people with epilepsy (PWE) when they self-reported took at least one treatment medication for seizures or epilepsy. Analysis of risk factors for epilepsy mainly includes Student's t-test, chi-square test, univariate and multivariate logistic regression analysis. RESULTS: People aged 40-59 shared 1.8 times the risk of epilepsy than those who aged 20-39, P=0.034. People who never married had a 2.8-fold higher risk of epilepsy than those who married/living with partner, P<0.001. The risk of epilepsy in subjects with very good/good general health was 0.4 times than that of subjects with fair/poor general health, P<0.001. Moreover, subjects without sleep disorders had a 0.4-fold higher risk of epilepsy than those who had sleep disorders, P=0.042. CONCLUSION: People who are older, unmarried, and have sleep disorders are at higher risk of epilepsy. In addition, good/good general health condition is associated with a lower risk of epilepsy.

12.
Mol Med Rep ; 24(2)2021 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-34080030

RESUMEN

Spontaneous intracerebral hemorrhage (ICH) is a subtype of stroke with high mortality and morbidity due to the lack of effective therapies. The alpha­amino­3­hydroxy­5­methyl­4­isoxazolepropionic acid receptor antagonist perampanel has been reported to alleviate early brain injury following subarachnoid hemorrhage and traumatic brain injury by reducing reactive oxygen species, apoptosis, autophagy, and necroptosis. Necroptosis is a caspase­independent programmed cell death mechanism that serves a vital role in neuronal cell death following ICH. However, the precise role of necroptosis in perampanel­mediated neuroprotection following ICH has not been confirmed. The present study aimed to investigate the neuroprotective effects and potential molecular mechanisms of perampanel in ICH­induced early brain injury by regulating neural necroptosis in C57BL/6 mice and in a hemin­induced neuron damage cell culture model. Mortality, neurological score, brain water content, and neuronal death were evaluated. The results demonstrated that perampanel treatment increased the survival rate and neurological score, and increased neuron survival. In addition, perampanel treatment downregulated the protein expression levels of receptor interacting serine/threonine kinase (RIP) 1, RIP3, and mixed lineage kinase domain like pseudokinase, and of the cytokines IL­1ß, IL­6, TNF­α, and NF­κB. These results indicated that perampanel­mediated inhibition of necroptosis and neuroinflammation ameliorated neuronal death in vitro and in vivo following ICH. The neuroprotective capacity of perampanel was partly dependent on the PTEN pathway. Taken together, the results of the present study demonstrated that perampanel improved neurological outcomes in mice and reduced neuronal death by protecting against neural necroptosis and neuroinflammation.


Asunto(s)
Lesiones Encefálicas/tratamiento farmacológico , Hemorragia Cerebral/tratamiento farmacológico , Antagonistas de Aminoácidos Excitadores/farmacología , Inflamación/tratamiento farmacológico , Necroptosis/efectos de los fármacos , Fármacos Neuroprotectores/farmacología , Nitrilos/farmacología , Piridonas/farmacología , Administración Oral , Animales , Lesiones Encefálicas/etiología , Lesiones Encefálicas/metabolismo , Muerte Celular/efectos de los fármacos , Línea Celular , Hemorragia Cerebral/complicaciones , Hemorragia Cerebral/metabolismo , Citocinas/metabolismo , Modelos Animales de Enfermedad , Hemina/toxicidad , Inflamación/metabolismo , Masculino , Ratones Endogámicos C57BL , FN-kappa B/metabolismo , Neuronas/efectos de los fármacos , Fármacos Neuroprotectores/administración & dosificación , Nitrilos/administración & dosificación , Fosfohidrolasa PTEN/genética , Fosfohidrolasa PTEN/metabolismo , Piridonas/administración & dosificación , Receptores de Glutamato/metabolismo , Transducción de Señal/efectos de los fármacos
13.
J Cell Physiol ; 236(10): 6920-6931, 2021 10.
Artículo en Inglés | MEDLINE | ID: mdl-33792028

RESUMEN

Subarachnoid hemorrhage (SAH) is a subtype of stroke with high mortality and morbidity due to the lack of effective therapy. Atorvastatin has been reported to alleviate early brain injury (EBI) following subarachnoid hemorrhage (SAH) via reducing reactive oxygen species, antiapoptosis, regulated autophagy, and neuroinflammation. Which was the related to the pyroptosis? Pyroptosis can be defined as a highly specific inflammatory programmed cell death, distinct from classical apoptosis and necrosis. However, the precise role of pyroptosis in atorvastatin-mediated neuroprotection following SAH has not been confirmed. The present study aimed to investigate the neuroprotection and potential molecular mechanisms of atorvastatin in the SAH-induced EBI via regulating neural pyroptosis using the filament perforation model of SAH in male C57BL/6 mice, and the hemin-induced neuron damage model in HT-22. Atorvastatin or vehicle was administrated 2 h after SAH and hemin-induced neuron damage. The mortality, neurological score, brain water content, and neuronal death were evaluated. The results show that the atorvastatin treatment markedly increased survival rate, neurological score, greater survival of neurons, downregulated the protein expression of NLRP1, cleaved caspase-1, interleukin-1ß (IL-1ß), and IL-18, which indicated that atorvastatin-inhibited pyroptosis and neuroinflammation, ameliorated neuron death in vivo/vitro subjected to SAH. Taken together, this study demonstrates that atorvastatin improved the neurological outcome in rats and reduced the neuron death by against neural pyroptosis and neuroinflammation.


Asunto(s)
Atorvastatina/farmacología , Lesiones Encefálicas/prevención & control , Encéfalo/efectos de los fármacos , Encefalitis/prevención & control , Neuronas/efectos de los fármacos , Fármacos Neuroprotectores/farmacología , Piroptosis/efectos de los fármacos , Hemorragia Subaracnoidea/tratamiento farmacológico , Animales , Encéfalo/metabolismo , Encéfalo/patología , Edema Encefálico/etiología , Edema Encefálico/metabolismo , Edema Encefálico/patología , Edema Encefálico/prevención & control , Lesiones Encefálicas/etiología , Lesiones Encefálicas/metabolismo , Lesiones Encefálicas/patología , Estudios de Casos y Controles , Caspasa 1/metabolismo , Línea Celular , Citocinas/metabolismo , Proteínas de Unión al ADN/metabolismo , Modelos Animales de Enfermedad , Encefalitis/etiología , Encefalitis/metabolismo , Encefalitis/patología , Hemina/toxicidad , Humanos , Mediadores de Inflamación/metabolismo , Interleucina-18/metabolismo , Interleucina-1beta/metabolismo , Masculino , Ratones Endogámicos C57BL , Proteína con Dominio Pirina 3 de la Familia NLR/metabolismo , Neuronas/metabolismo , Neuronas/patología , Hemorragia Subaracnoidea/complicaciones , Hemorragia Subaracnoidea/metabolismo , Hemorragia Subaracnoidea/patología
14.
Int J Gen Med ; 14: 10065-10081, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34984027

RESUMEN

OBJECTIVE: Anal canal cancer is a rare malignancy with increasing incidence in recent times. This study aimed to develop two nomograms to predict the overall survival (OS) and cancer-specific survival (CSS) of patients with anal canal cancer. METHODS: Information of patients with anal canal cancer from 2004 to 2015 was extracted from the surveillance, epidemiology, and end results (SEER) database. Cox analysis was used to select the risk factors for prognosis, and nomograms were constructed using the R software. The C-index, area under the curve (AUC) of time-dependent receiver operating characteristic (ROC) curves, calibration plot and decision curve analysis (DCA) were used to assess the clinical utility of the nomograms. RESULTS: A total of 2458 patients with malignant tumours of the anal canal were screened out. Sex, age, marital status, histological type, grade, tumour size, AJCC stage, SEER stage and chemotherapy were independent prognostic factors for OS, whereas sex, age, race, histological type, grade, tumour size, AJCC stage, SEER stage and radiotherapy were independent prognostic factors for CSS. In the training cohort, the C-index value for OS nomogram was 0.73 (95% CI, 0.69-0.77), and the AUC values that predicted the 1-, 3- and 5-year survival rates were 0.764, 0.758 and 0.760, respectively, whereas the C-index value for CSS nomogram model was 0.74 (95% CI, 0.69-0.79), and the AUC values were 0.763, 0.769 and 0.763, respectively. The calibration plot and DCA curves demonstrated good prediction performance of the model in both the training and validation cohorts. CONCLUSION: The established nomogram is a visualisation tool that can effectively predict the OS and CSS of patients with anal canal cancer.

15.
Front Mol Biosci ; 7: 556481, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-33134310

RESUMEN

The outbreak of 2019 novel coronavirus (COVID-19) has caused serious threat to public health. Discovery of new anti-COVID-19 drugs is urgently needed. Fortunately, the crystal structure of COVID-19 3CL proteinase was recently resolved. The proteinase has been identified as a promising target for drug discovery in this crisis. Here, a dataset including 2030 natural compounds was screened and refined based on the machine learning and molecular docking. The performance of six machine learning (ML) methods of predicting active coronavirus inhibitors had achieved satisfactory accuracy, especially, the AUC (Area Under ROC Curve) scores with fivefold cross-validation of Logistic Regression (LR) reached up to 0.976. Comprehensive ML prediction and molecular docking results accounted for the compound Rutin, which was approved by NMPA (National Medical Products Administration), exhibited the best AUC and the most promising binding affinity compared to other compounds. Therefore, Rutin might be a promising agent in anti-COVID-19 drugs development.

16.
Plant Physiol Biochem ; 143: 212-223, 2019 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-31518852

RESUMEN

In this study, we reported on an ASR gene (TtASR) related to salt/drought tolerance from the edible halophyte Tetragonia tetragonoides (Pall.) Kuntze (Aizoaceae). A phylogenetic analysis revealed that TtASR was evolutionarily close to other two halophytic glycine-rich ASR members, SbASR-1 (from Salicornia brachiate) and SlASR (from Suaeda liaotungensis), with a typical abscisic acid (ABA)/water-deficit stress (WDS) domain at C-terminal. Quantitative RT-PCR analyses showed that TtASR was expressed in all tested different organs of the T. tetragonoides plant and that expression levels were apparently induced after salt, osmotic stress, and ABA treatments in T. tetragonoides seedlings. An induction of TtASR improved the growth performance of yeast and bacteria more than the control under high salinity, osmotic stress, and oxidative stress. TtASR was not a nuclear-specific protein in plant, and the transcriptional activation assay also demonstrated that TtASR could not activate reporter gene's expression in yeast. TtASR overexpressed Arabidopsis plants exhibited higher tolerance for salt/drought and oxidative stresses and lower ROS accumulation than wild type (WT) plants, accompanied by increased CAT, SOD activities, higher proline content, and lower MDA content in vivo. The results indicated that the TtASR was involved in plant responses to salt and drought, probably by mediating water homeostasis or by acting as ROS scavengers, and that it decreased the membrane damage and improved cellular osmotic adjustment that respond to abiotic stresses in microorganisms and plants.


Asunto(s)
Aizoaceae/metabolismo , Glicina/química , Proteínas de Plantas/metabolismo , Ácido Abscísico/metabolismo , Aizoaceae/efectos de los fármacos , Aizoaceae/fisiología , Regulación de la Expresión Génica de las Plantas/efectos de los fármacos , Estrés Oxidativo/efectos de los fármacos , Proteínas de Plantas/genética , Plantas Modificadas Genéticamente/efectos de los fármacos , Plantas Modificadas Genéticamente/metabolismo , Plantas Modificadas Genéticamente/fisiología , Prolina/metabolismo , Tolerancia a la Sal , Plantas Tolerantes a la Sal/efectos de los fármacos , Plantas Tolerantes a la Sal/metabolismo , Plantas Tolerantes a la Sal/fisiología , Plantones/efectos de los fármacos , Plantones/metabolismo , Plantones/fisiología , Cloruro de Sodio/farmacología , Estrés Fisiológico/efectos de los fármacos
17.
Materials (Basel) ; 12(4)2019 Feb 18.
Artículo en Inglés | MEDLINE | ID: mdl-30781635

RESUMEN

The interaction between alloy melt and mold facecoats is the main factor affecting the surface quality of investment casting nickel-based superalloys. An investigation was undertaken to develop suitable refractories as facecoat materials for the directionally solidified blades of DZ22B nickel-based superalloys in order to avoid a sand-burning defect. The wettability and interface reactions between alloy melt and various facecoats were studied by using a sessile drop experiment and the real investment casting method, respectively. The results show that by adding Cr2O3 powder with the amounts of 2 wt.%, 5 wt.% and 10 wt.% in the fused alumina-based facecoats, the wetting angles between the alloy melt and facecoats decreased from 105.40° to 100.37°, 99.96° and 98.11°, respectively, while the sand-burning defect on the casting blade surfaces still formed during the process of directional solidification. However, by adding h-BN powder in the fused alumina-based facecoats, the wetting angles between the alloy melt and facecoats dramatically increased, the sand-burning defect on the casting blade surfaces was effectively inhibited and a metallic luster on the directionally solidified blades could be obviously observed. In this study, the suitable composition of mold facecoats for the investment casting of blades is 2 wt.% h-BN added fused alumina.

18.
AAPS PharmSciTech ; 20(3): 114, 2019 Feb 13.
Artículo en Inglés | MEDLINE | ID: mdl-30761435

RESUMEN

The mechanism of L-Val on how to improve the stability of gabapentin (GBP) was described by the combination of chemical analysis experiments and computer simulations. Scanning electron microscope (SEM), powder X-ray diffraction (PXRD), and differential scanning calorimeter (DSC), coupled with attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR), were used to identify ß-GBP prepared by rapid solvent removal method. The reaction barriers on crystal planes, ß-GBP (100) and ß-GBP (10-1), are smaller than α-GBP and γ-GBP, reaching 276.65 kJ/mol and 299.57 kJ/mol, respectively. Thus, it was easier for ß-GBP to form lactam, and the occurrence of ß-GBP would lead the worse stability of α-GBP. The addition of neutral amino acids such as L-Val could improve the stability of α-GBP effectively. The adsorption energy of α-GBP (002) crystal plane with L-Val is larger than that of other crystal planes, reaching 42.17 kJ/mol. Hydrogen bond was the combination of L-Val and GBP main crystal planes, which could inhibit the crystal transformation of α-GBP. These results suggest that neutral amino acid protectants, such as L-Val, could improve the stability of α-GBP effectively, and inhibition of crystal transformation is one of the effective methods to improve the stability of polymorphic drugs.


Asunto(s)
Simulación por Computador , Estabilidad de Medicamentos , Antagonistas de Aminoácidos Excitadores/química , Gabapentina/química , Valina/química , Rastreo Diferencial de Calorimetría , Enlace de Hidrógeno , Concentración de Iones de Hidrógeno , Microscopía Electrónica de Rastreo , Difracción de Polvo , Soluciones , Espectroscopía Infrarroja por Transformada de Fourier/métodos , Agua , beta-Lactamas/síntesis química
19.
Neural Regen Res ; 14(4): 632-641, 2019 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-30632503

RESUMEN

Long non-coding RNAs (lncRNAs) play a key role in craniocerebral disease, although their expression profiles in human traumatic brain injury are still unclear. In this regard, in this study, we examined brain injury tissue from three patients of the 101st Hospital of the People's Liberation Army, China (specifically, a 36-year-old male, a 52-year-old female, and a 49-year-old female), who were diagnosed with traumatic brain injury and underwent brain contusion removal surgery. Tissue surrounding the brain contusion in the three patients was used as control tissue to observe expression characteristics of lncRNAs and mRNAs in human traumatic brain injury tissue. Volcano plot filtering identified 99 lncRNAs and 63 mRNAs differentially expressed in frontotemporal tissue of the two groups (P < 0.05, fold change > 1.2). Microarray analysis showed that 43 lncRNAs were up-regulated and 56 lncRNAs were down-regulated. Meanwhile, 59 mRNAs were up-regulated and 4 mRNAs were down-regulated. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses revealed 27 signaling pathways associated with target genes and, in particular, legionellosis and influenza A signaling pathways. Subsequently, a lncRNA-gene network was generated, which showed an absolute correlation coefficient value > 0.99 for 12 lncRNA-mRNA pairs. Finally, quantitative real-time polymerase chain reaction confirmed different expression of the five most up-regulated mRNAs within the two groups, which was consistent with the microarray results. In summary, our results show that expression profiles of mRNAs and lncRNAs are significantly different between human traumatic brain injury tissue and surrounding tissue, providing novel insight regarding lncRNAs' involvement in human traumatic brain injury. All participants provided informed consent. This research was registered in the Chinese Clinical Trial Registry (registration number: ChiCTR-TCC-13004002) and the protocol version number is 1.0.

20.
Biochem Biophys Res Commun ; 478(3): 1189-97, 2016 09 23.
Artículo en Inglés | MEDLINE | ID: mdl-27568288

RESUMEN

Karyopherinß1 (KPNB1), one of the cytosolic factors involved in the selective protein transport across nucleus, docked at nuclear pore complex and transported through nuclear envelope in an ATP-dependent style, assisting proteins to be recognized as import substrates. It has been reported to be bound up with the origination and progress of lung cancer, cervical cancer, head and neck cancer and hepatocellular carcinoma. In current study, we demonstrated for the first time that the role of KPNB1 in human glioma. KPNB1 was over-expressed as the well-known trend of Ki-67(p < 0.01) and tightly closed to poor prognosis, as an independent prognostic factor. In vitro, up-regulation of KPNB1 was accompanied by certain rising levels of proliferation markers, employing U251 and U87MG cells as serum-starve models. Silencing KPNB1 in U251 and U87MG led to G1 phase arrested directly via flow cytometry analysis. In the nucleus of KPNB1-depletion cell models, the decreasing expression of KPNB1 and ß-catenin was detected respectively, which indicated that KPNB1 functioned via ß-catenin signal. Besides, the interaction between KPNB1 and ß-catenin was proved clearly by immunoprecipitation. Taken together, it showed that KPNB1 might enhance human glioma proliferation via Wnt/ß-Catenin Pathway.


Asunto(s)
Neoplasias Encefálicas/metabolismo , Neoplasias Encefálicas/patología , Glioma/metabolismo , Glioma/patología , Vía de Señalización Wnt , beta Carioferinas/metabolismo , Adulto , Ciclo Celular , Línea Celular Tumoral , Núcleo Celular/metabolismo , Proliferación Celular , Regulación hacia Abajo/genética , Femenino , Humanos , Antígeno Ki-67/metabolismo , Masculino , Persona de Mediana Edad , Clasificación del Tumor , Pronóstico , Unión Proteica , Transporte de Proteínas , Análisis de Supervivencia , Organización Mundial de la Salud , beta Catenina/metabolismo
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