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1.
BMC Anesthesiol ; 22(1): 286, 2022 09 10.
Artigo em Inglês | MEDLINE | ID: mdl-36088298

RESUMO

OBJECTIVE: This study aimed to investigate the effects of morning and afternoon surgeries on the early postoperative sleep function in patients undergoing general anesthesia. METHODS: Fifty nine patients, aged 18-60 years, American society of anaesthesiologists (ASA) grade I or II, Body mass index of 18.5-28 kg/m2, undergoing laparoscopic myomectomy under total intravenous anesthesia, were included in the study. These patients were divided into two groups according to the start time of anesthesia: morning surgery group (group A, 8:00-12:00) and afternoon surgery group (group P, 14:00-18:00). The sleep conditions of the two groups of patients were evaluated by the Athens Insomnia Scale (AIS) one day before and one day after the operation. A total score of > 6 was regarded as postoperative sleep disturbance. The incidences of sleep disturbance one day after the operation in two groups were compared. The bispectral Index assessed the patient's total sleep duration, sleep efficiency, and overall quality of sleep from 21:00 to 6:00 on the first night after surgery. Plasma concentrations of melatonin and cortisol at 6:00 am 1 day before surgery, 1 day after surgery were measured by ELISA, and rapid random blood glucose was measured. RESULTS: The total AIS score, overall quality of sleep, total sleep duration, and final awakening earlier than desired scores of the two groups of patients on the first night after surgery were significantly increased compared with preoperative scores (P < 0.01). In group P, the sleep induction and the physical and mental functioning during the day scores increased significantly after surgery compared with preoperative scores (P < 0.05). The postoperative AIS scores in group P increased significantly compared with those in group A (P < 0.01). The incidence of postoperative sleep disturbances (70.0%) in group P was significantly higher than that in group A (37.9%) (P < 0.05). Compared with group A, the total sleep duration under BIS monitoring in group P was significantly shorter, the sleep efficiency and the overall quality of sleep was significantly reduced (P < 0.01). Compared with those in group A, the level of melatonin on 1 d after surgery in group P was significantly decreased, and the level of cortisol in group P was significantly increased. There were no significant differences between the two groups in the levels of postoperative blood glucose and pain. CONCLUSION: Both morning and afternoon surgeries have significant impacts on the sleep function in patients undergoing general anesthesia, while afternoon surgery has a more serious impact on sleep function. TRIAL REGISTRATION: ClinicalTrials, NCT04103528. Registered 24 September 2019-Retrospectively registered, http://www. CLINICALTRIALS: gov/ NCT04103528.


Assuntos
Melatonina , Transtornos do Sono-Vigília , Anestesia Geral , Glicemia , Humanos , Hidrocortisona , Período Pós-Operatório , Qualidade do Sono , Transtornos do Sono-Vigília/epidemiologia
2.
Perfusion ; : 2676591221135165, 2022 Oct 25.
Artigo em Inglês | MEDLINE | ID: mdl-36282873

RESUMO

PURPOSE: To explore the life experiences of patients who have been discharged after undergoing extracorporeal membrane oxygenation (ECMO) support. DESIGN: A qualitative descriptive approach was used. METHODS: Patients who have undergone ECMO support and have been discharged were recruited. Thirteen participants were involved in this study. The data were collected through a semi-structured interview and analyzed using the Colaizzi method. FINDINGS: Four major themes in life experiences were reported by the participants: changes in physical function, changes in psychological state, active adaptation to daily life, and substantial rehabilitation needs. CONCLUSION: Different, continuous, and convenient post-discharge physical and mental interventions, social support, spiritual support, and rehabilitation services should be provided according to the patient's circumstances. We also call on the government to increase the patient reimbursement rate for ECMO treatment. These measures may help to improve the quality of life of patients.

3.
Nanotechnology ; 32(8): 085502, 2021 Feb 19.
Artigo em Inglês | MEDLINE | ID: mdl-33202394

RESUMO

The immunochromatographic strip test (ICST) is a powerful on-site detection technology due to its unique advantages of simplicity, rapidity, and readability by the naked eye. Here we illustrate the potential of α-Fe2O3 polyhedrons as a novel visual label, which exhibit advantages of high stability and economy, for the detection of Listeria monocytogenes (L. monocytogenes) as a model foodborne pathogen. A low-cost and simple one-step solvothermal approach was developed for the synthesis of α-Fe2O3 polyhedrons; the average diameter of the α-Fe2O3 polyhedrons is about 200 nm. The crystal structure and morphology of α-Fe2O3 polyhedrons were characterized by x-ray diffraction and transmission electron microscope. α-Fe2O3 polyhedrons were immunized with anti-L. monocytogenes antibody to prepare an antibody-colloidal α-Fe2O3 polyhedron ICST. Visual detection can be obtained directly by the naked eye within 10 min. The detection limit of L. monocytogenes by α-Fe2O3 polyhedron ICST assay was 3.8 × 106 and 5.6 × 106 CFU/ml of pure culture and artificially spiked orange juice drink sample, respectively. Results indicated that the antibody-colloidal α-Fe2O3 polyhedron ICST is a rapid, simple, and low-cost assay. This approach showed great potential in the application of foodborne pathogen detection concerning food safety.


Assuntos
Compostos Férricos/química , Microbiologia de Alimentos/métodos , Listeria monocytogenes/isolamento & purificação , Anticorpos Antibacterianos/química , Anticorpos Imobilizados/química , Coloides , Compostos Férricos/síntese química , Imunoensaio , Limite de Detecção , Listeria monocytogenes/imunologia , Nanoestruturas/química , Fitas Reagentes/química
4.
Plant Physiol ; 180(1): 543-558, 2019 05.
Artigo em Inglês | MEDLINE | ID: mdl-30782965

RESUMO

Plants have evolved many receptor-like kinases (RLKs) to sense extrinsic and intrinsic cues. The signaling pathways mediated by multiple Leucine-rich repeat (LRR) RLK (LRR-RLK) receptors require ligand-induced receptor-coreceptor heterodimerization and transphosphorylation with BRI1-ASSOCIATED RECEPTOR KINASE1 (BAK1)/SOMATIC EMBRYOGENESIS RECEPTOR KINASES family LRR-RLKs. Here we reveal an additional layer of regulation of BAK1 via a Ca2+-dependent proteolytic cleavage process that is conserved in Arabidopsis (Arabidopsis thaliana), Nicotiana benthamiana, and Saccharomyces cerevisiae The proteolytic cleavage of BAK1 is intrinsically regulated in response to developmental cues and immune stimulation. The surface-exposed Asp (D287) residue of BAK1 is critical for its proteolytic cleavage and plays an essential role in BAK1-regulated plant immunity, growth hormone brassinosteroid-mediated responses, and cell death containment. BAK1D287A mutation impairs BAK1 phosphorylation on its substrate BOTRYTIS-INDUCED KINASE1 (BIK1), and its plasma membrane localization. Intriguingly, it aggravates BAK1 overexpression-triggered cell death independent of BIK1, suggesting that maintaining homeostasis of BAK1 through a proteolytic process is crucial to control plant growth and immunity. Our data reveal that in addition to layered transphosphorylation in the receptor complexes, the proteolytic cleavage is an important regulatory process for the proper functions of the shared coreceptor BAK1 in diverse cellular signaling pathways.


Assuntos
Proteínas de Arabidopsis/metabolismo , Arabidopsis/fisiologia , Proteínas Serina-Treonina Quinases/metabolismo , Arabidopsis/citologia , Arabidopsis/efeitos dos fármacos , Proteínas de Arabidopsis/genética , Cálcio/metabolismo , Bloqueadores dos Canais de Cálcio/farmacologia , Morte Celular/efeitos dos fármacos , Membrana Celular/metabolismo , Ácido Edético/farmacologia , Moléculas com Motivos Associados a Patógenos/imunologia , Células Vegetais , Imunidade Vegetal , Plantas Geneticamente Modificadas , Proteínas Quinases/genética , Proteínas Quinases/metabolismo , Proteínas Serina-Treonina Quinases/genética , Proteólise , Pseudomonas syringae/fisiologia , Nicotiana/metabolismo
5.
Nutr Neurosci ; 22(12): 840-849, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-29595091

RESUMO

Objectives: This study evaluated the bioactive composition of tempeh products and examined the effects of tempeh on BV-2 microglial cell cytotoxicity, neurotrophic effects, and expression of inflammatory genes.Methods: Tempeh products included soybean fermented by Rhizopus, soybean fermented through cocultivation with Rhizopus and Lactobacillus, and red bean fermented through cocultivation with Rhizopus and Lactobacillus (RT-C). We analyzed the bioactive contents of tempeh extracts and evaluated the effects of tempeh water extract on lipopolysaccharide (LPS)-treated BV-2 cells.Results: The results showed that RT-C water extract had the highest concentrations of γ-aminobutyric acid (GABA) and anthocyanin. The tempeh water extracts, especially RT-C, reduced the formation of LPS-induced reactive oxygen species, downregulated the levels of nitric oxide synthase and phospho-cyclic-AMP response element-binding protein, and upregulated the expression of brain-derived neurotrophic factor (BDNF).Discussion: Our data demonstrate that RT-C has the highest concentrations of GABA and anthocyanin, more effectively reduces oxidative stress and inflammation, and increases the expression of BDNF in LPS-induced BV-2 cells.


Assuntos
Lipopolissacarídeos/farmacologia , Microglia/efeitos dos fármacos , Fármacos Neuroprotetores/administração & dosagem , Extratos Vegetais/farmacologia , Alimentos de Soja , Animais , Antocianinas/análise , Antocianinas/farmacologia , Anti-Inflamatórios/farmacologia , Antioxidantes/farmacologia , Fator Neurotrófico Derivado do Encéfalo/análise , Linhagem Celular , Proteína de Ligação ao Elemento de Resposta ao AMP Cíclico/análise , Fermentação , Lactobacillus/metabolismo , Camundongos , Óxido Nítrico Sintase Tipo II/análise , Extratos Vegetais/química , Rhizopus/metabolismo , Glycine max , Ácido gama-Aminobutírico/análise , Ácido gama-Aminobutírico/farmacologia
6.
Plant J ; 90(2): 276-292, 2017 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-28107780

RESUMO

Flavonoids are major polyphenol compounds in plant secondary metabolism. Wild red-fleshed apples (Malus sieversii f. niedzwetzkyana) are an excellent resource because of their much high flavonoid content than cultivated apples. In this work, R6R6, R6R1 and R1R1 genotypes were identified in an F1 segregating population of M. sieversii f. niedzwetzkyana. Significant differences in flavonoid composition and content were detected among the three genotypes by ultra-performance liquid chromatography/quadrupole time-of-flight mass spectrometry analysis. Furthermore, two putative flavonoid-related genes encoding R2R3-MYB transcription factors, designated MYB12 and MYB22, were cloned and characterized. The expression patterns of MYB12 and MYB22 directly correlated with those of leucoanthocyanidin reductase and flavonol synthase, respectively. Their roles in flavonoid biosynthesis were identified by overexpression in apple callus and ectopic expression in Arabidopsis. MYB12 expression in the Arabidopsis TT2 mutant complemented its proanthocyanidin-deficient phenotype. Likewise, MYB22 expression in an Arabidopsis triple mutant complemented its flavonol-deficient phenotype. MYB12 could interact with bHLH3 and bHLH33 and played an essential role in proanthocyanidin synthesis. MYB22 was found to activate flavonol pathways by combining directly with the flavonol synthase promoter. Our findings provide a valuable perspective on flavonoid synthesis and provide a basis for breeding elite functional apples with a high flavonoid content.


Assuntos
Flavonóis/metabolismo , Malus/metabolismo , Proteínas de Plantas/metabolismo , Proantocianidinas/metabolismo , Regulação da Expressão Gênica de Plantas/genética , Regulação da Expressão Gênica de Plantas/fisiologia , Genótipo , Malus/genética , Proteínas de Plantas/genética , Fatores de Transcrição/genética , Fatores de Transcrição/metabolismo
7.
Phys Chem Chem Phys ; 20(20): 13903-13908, 2018 May 23.
Artigo em Inglês | MEDLINE | ID: mdl-29741176

RESUMO

Surface decoration with alkali metal adatoms has been predicted to be promising for silicene to obtain high hydrogen storage capacity. Herein, we performed a detailed study of the hydrogen storage properties of Li and Na co-decorated silicene (Li-Na-decorated silicene) based on first-principles calculations using van der Waals correction. The hydrogen adsorption behaviors, including the adsorption order, the maximum capacity, and the corresponding mechanism were analyzed in detail. Our calculations show that up to three hydrogen molecules can firmly bind to each Li atom and six for each Na atom, respectively. The hydrogen storage capacity is estimated to be as high as 6.65 wt% with a desirable average adsorption energy of 0.29 eV/H2. It is confirmed that both the charge-induced electrostatic interaction and the orbital hybridizations play a great role in hydrogen storage. Our results may enhance our fundamental understanding of the hydrogen storage mechanism, which is of great importance for the practical application of Li-Na-decorated silicene in hydrogen storage.

8.
BMC Cardiovasc Disord ; 18(1): 32, 2018 02 13.
Artigo em Inglês | MEDLINE | ID: mdl-29433438

RESUMO

BACKGROUND: Molecular hydrogen has been shown to have antioxidant effect and have been used to prevent oxidative stress-related diseases. The goal of this study was to explore if hydrogen-rich saline (HRS) plays a cardioprotective effect on abdominal aortic constriction (AAC) induced cardiac hypertrophy in rats. 60adult Sprague-Dawley rats received surgically the AAC for 6-week. After the surgery, the rats were randomly divided into 4 groups (15 for each):1: sham-operated (sham); 2: AAC-model; 3: AAC + Low HRS (LHRS); and 4: AAC + High HRS (HHRS). The rats in sham and AAC-model groups were treated with normal saline intraperitoneally, while rats in LHRS and HHRS groups were intraperitoneally treated with 3 or 6 mL/kg HRS daily, respectively, for 6-week. RESULTS: The ratios of HW/BW and LVW/BW were shown in an order of Model > LHRS > HHRS > SHAM groups. The cardiac hypertrophy was also manifested with increased expressions of atrial natriuretic peptide (ANP), brain natriuretic peptides (BNP) and fibrosis of cardiac tissues in AAC-model group, which could likewise be restrained in LHRS and HHRS groups. Moreover, the JAK-STAT (Janus Kinase-Signal transducers and activators of transcription) signaling molecule expressions were decreased with HRS treatment. CONCLUSIONS: Our results showed a protective effect of HRS on pressure overload-induced cardiac hypertrophy in rats, which may be associated to a decreasing in JAK-STAT signaling pathway.


Assuntos
Aorta Abdominal/fisiopatologia , Aorta Abdominal/cirurgia , Pressão Arterial , Cardiomegalia/prevenção & controle , Hidratação/métodos , Hidrogênio/administração & dosagem , Janus Quinases/metabolismo , Miocárdio/enzimologia , Fatores de Transcrição STAT/metabolismo , Transdução de Sinais , Cloreto de Sódio/administração & dosagem , Animais , Apoptose , Fator Natriurético Atrial/metabolismo , Cardiomegalia/enzimologia , Cardiomegalia/etiologia , Cardiomegalia/fisiopatologia , Constrição , Modelos Animais de Doenças , Fibrose , Masculino , Miocárdio/patologia , Peptídeo Natriurético Encefálico/metabolismo , Ratos Sprague-Dawley
9.
Nanotechnology ; 27(12): 125603, 2016 Mar 29.
Artigo em Inglês | MEDLINE | ID: mdl-26890721

RESUMO

The optimization of nanopore-based devices is closely related to the nanopore three-dimensional (3D) structures. In this paper, faceted nanopores were fabricated in magnesium (Mg) by aligning the electron beam (e-beam) along the [0001] direction. Detailed structural characterization by transmission electron microscopy reveals the existence of two 3D structures: hexagonal prism-shaped and hourglass-shaped 3D morphologies. Moreover, the 3D structures of nanopores are also found to depend on the widest nanopore diameter-to-thickness ratio (D/t). A plausible formation mechanism for different 3D structures is discussed. Our results incorporate a critical piece of information regarding the nanopore 3D structures in Mg and may serve as an important design guidance for the size- and shape-controllable fabrication of solid-state nanopores applying the e-beam sculpting technique.

10.
Plant J ; 77(2): 235-45, 2014 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-24237140

RESUMO

Pseudomonas syringae delivers a plethora of effector proteins into host cells to sabotage immune responses and modulate physiology to favor infection. The P. syringae pv. tomato DC3000 effector HopF2 suppresses Arabidopsis innate immunity triggered by multiple microbe-associated molecular patterns (MAMP) at the plasma membrane. We show here that HopF2 possesses distinct mechanisms for suppression of two branches of MAMP-activated MAP kinase (MAPK) cascades. In addition to blocking MKK5 (MAPK kinase 5) activation in the MEKK1 (MAPK kinase kinase 1)/MEKKs-MKK4/5-MPK3/6 cascade, HopF2 targets additional component(s) upstream of MEKK1 in the MEKK1-MKK1/2-MPK4 cascade and the plasma membrane-localized receptor-like cytoplasmic kinase BIK1 and its homologs. We further show that HopF2 directly targets BAK1, a plasma membrane-localized receptor-like kinase that is involved in multiple MAMP signaling. The interaction between BAK1 and HopF2 and between two other P. syringae effectors, AvrPto and AvrPtoB, was confirmed in vivo and in vitro. Consistent with BAK1 as a physiological target of AvrPto, AvrPtoB and HopF2, the strong growth defects or lethality associated with ectopic expression of these effectors in wild-type Arabidopsis transgenic plants were largely alleviated in bak1 mutant plants. Thus, our results provide genetic evidence to show that BAK1 is a physiological target of AvrPto, AvrPtoB and HopF2. Identification of BAK1 as an additional target of HopF2 virulence not only explains HopF2 suppression of multiple MAMP signaling at the plasma membrane, but also supports the notion that pathogen virulence effectors act through multiple targets in host cells.


Assuntos
Proteínas de Arabidopsis/fisiologia , Arabidopsis/imunologia , Proteínas de Bactérias/fisiologia , Proteínas Serina-Treonina Quinases/fisiologia , Pseudomonas syringae/metabolismo , Fosforilação , Pseudomonas syringae/patogenicidade , Virulência
11.
Clin Exp Hypertens ; 37(7): 604-8, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26207882

RESUMO

AIM: The aim of the study is to measure the vasoactive peptides, urotensin II (UII), endothelin (ET) and adrenomedullin (ADM) in a well-characterized population of normal controls and patients with essential hypertension, and to study their association with this disease. METHODS: The contents of plasma UII, ET and ADM were measured by radioimmunoassay in 40 normal controls and 120 patients with essential hypertension. Echocardiographic examinations were performed using an ultrasonic system, and the left ventricular end diastolic diameter (LVEDd) along with the left ventricular posterior wall thickness (LVPWT) and interventricular septal thickness (IST) were determined. The left ventricular mass index (LVMI) was calculated according to the method reported by Devereux et al. RESULTS: Plasma UII, ET and ADM contents were increased in patients than healthy controls (3.28 ± 1.257 pmol/L vs. 1.80 ± 0.639 pmol/L, p < 0.01), and correlated with the severity of hypertension in patients. Besides, all the three vasoactive peptides in plasma had significant correlations with SBP, IST, LVPWT, LVMI (p ≤ 0.05), while they showed insignificant associations with LVEDd (p > 0.05). UII was remarkably associated with ADM content, while the association of UII level with LVEDd and ET content were not significant. CONCLUSION: The vasoactive peptides UII, ET and ADM may be involved in the pathophysiologic process of essential hypertension, and function as the indicators for severity of this disease.


Assuntos
Adrenomedulina/sangue , Endotelinas/sangue , Ventrículos do Coração/diagnóstico por imagem , Hipertensão , Urotensinas/sangue , Idoso , Ecocardiografia/métodos , Hipertensão Essencial , Feminino , Humanos , Hipertensão/sangue , Hipertensão/diagnóstico , Hipertensão/fisiopatologia , Masculino , Pessoa de Meia-Idade , Estatística como Assunto
12.
World J Microbiol Biotechnol ; 31(1): 227-35, 2015 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-25423905

RESUMO

Valsa mali var. mali, the causal agent of valsa canker of apple, causes great loss of apple production in apple producing regions. The pathogenic mechanism of the pathogen has not been studied extensively, thus a suitable gene marker for pathogenic invasion analysis and a random insertion of T-DNA for mutants are desirable. In this paper, we reported the construction of a binary vector pKO1-HPH containing a positive selective gene hygromycin phosphotransferase (hph), a reporter gene gfp conferring green fluorescent protein, and an efficient protocol for V. mali var. mali transformation mediated by Agrobacterium tumefaciens. A transformation efficiency up to about 75 transformants per 10(5) conidia was achieved when co-cultivation of V. mali var. mali and A. tumefaciens for 48 h in A. tumefaciens inductive medium agar plates. The insertions of hph gene and gfp gene into V. mali var. mali genome verified by polymerase chain reaction and southern blot analysis showed that 10 randomly-selected transformants exhibited a single, unique hybridization pattern. This is the first report of A. tumefaciens-mediated transformation of V. mali var mali carrying a 'reporter' gfp gene that stably and efficiently expressed in the transformed V. mali var. mali species.


Assuntos
Ascomicetos/genética , Genética Microbiana/métodos , Biologia Molecular/métodos , Transformação Genética , Ascomicetos/isolamento & purificação , Southern Blotting , Meios de Cultura/química , DNA Fúngico/genética , Fluorescência , Expressão Gênica , Genes Reporter , Proteínas de Fluorescência Verde/análise , Proteínas de Fluorescência Verde/genética , Malus/microbiologia , Reação em Cadeia da Polimerase , Seleção Genética
13.
Plant Physiol ; 162(2): 1018-29, 2013 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-23632856

RESUMO

To accomplish successful infection, pathogens deploy complex strategies to interfere with host defense systems and subvert host physiology to favor pathogen survival and multiplication. Modulation of plant auxin physiology and signaling is emerging as a common virulence strategy for phytobacteria to cause diseases. However, the underlying mechanisms remain largely elusive. We have previously shown that the Pseudomonas syringae type III effector AvrRpt2 alters Arabidopsis (Arabidopsis thaliana) auxin physiology. Here, we report that AvrRpt2 promotes auxin response by stimulating the turnover of auxin/indole acetic acid (Aux/IAA) proteins, the key negative regulators in auxin signaling. AvrRpt2 acts additively with auxin to stimulate Aux/IAA turnover, suggesting distinct, yet proteasome-dependent, mechanisms operated by AvrRpt2 and auxin to control Aux/IAA stability. Cysteine protease activity is required for AvrRpt2-stimulated auxin signaling and Aux/IAA degradation. Importantly, transgenic plants expressing the dominant axr2-1 mutation recalcitrant to AvrRpt2-mediated degradation ameliorated the virulence functions of AvrRpt2 but did not alter the avirulent function mediated by the corresponding RPS2 resistance protein. Thus, promoting auxin response via modulating the stability of the key transcription repressors Aux/IAA is a mechanism used by the bacterial type III effector AvrRpt2 to promote pathogenicity.


Assuntos
Arabidopsis/metabolismo , Arabidopsis/microbiologia , Proteínas de Bactérias/metabolismo , Ácidos Indolacéticos/metabolismo , Pseudomonas syringae/patogenicidade , Arabidopsis/genética , Proteínas de Arabidopsis/genética , Proteínas de Arabidopsis/metabolismo , Proteínas de Bactérias/genética , Cisteína Proteases/metabolismo , Interações Hospedeiro-Patógeno/fisiologia , Mutação , Proteínas Nucleares/genética , Proteínas Nucleares/metabolismo , Doenças das Plantas/microbiologia , Plantas Geneticamente Modificadas , Complexo de Endopeptidases do Proteassoma/metabolismo , Estabilidade Proteica , Pseudomonas syringae/metabolismo , Fatores de Transcrição
14.
Int J Mol Sci ; 15(1): 743-57, 2014 Jan 08.
Artigo em Inglês | MEDLINE | ID: mdl-24406729

RESUMO

Despite the advances in cancer therapy and early detection, breast cancer remains a leading cause of cancer-related deaths among females worldwide. The aim of the current study was to investigate the antitumor activity of a novel compound, 4-(3,4,5-trimethoxyphenoxy)benzoic acid (TMPBA) and its mechanism of action, in breast cancer. Results indicated the relatively high sensitivity of human breast cancer cell-7 and MDA-468 cells towards TMPBA with IC50 values of 5.9 and 7.9 µM, respectively compared to hepatocarcinoma cell line Huh-7, hepatocarcinoma cell line HepG2, and cervical cancer cell line Hela cells. Mechanistically, TMPBA induced apoptotic cell death in MCF-7 cells as indicated by 4',6-diamidino-2-phenylindole (DAPI) nuclear staining, cell cycle analysis and the activation of caspase-3. Western blot analysis revealed the ability of TMPBA to target pathways mediated by mitogen-activated protein (MAP) kinases, 5' adenosine monophosphate-activated protein kinase (AMPK), and p53, of which the concerted action underlined its antitumor efficacy. In addition, TMPBA induced alteration of cyclin proteins' expression and consequently modulated the cell cycle. Taken together, the current study underscores evidence that TMPBA induces apoptosis in breast cancer cells via the modulation of cyclins and p53 expression as well as the modulation of AMPK and mitogen-activated protein kinases (MAPK) signaling. These findings support TMPBA's clinical promise as a potential candidate for breast cancer therapy.


Assuntos
Antineoplásicos/farmacologia , Benzoatos/farmacologia , Ciclinas/metabolismo , Proteínas Quinases Ativadas por Mitógeno/metabolismo , Éteres Fenílicos/farmacologia , Transdução de Sinais/efeitos dos fármacos , Proteína Supressora de Tumor p53/metabolismo , Antineoplásicos/síntese química , Antineoplásicos/química , Apoptose/efeitos dos fármacos , Benzoatos/síntese química , Benzoatos/química , Neoplasias da Mama/metabolismo , Neoplasias da Mama/patologia , Linhagem Celular Tumoral , Proliferação de Células/efeitos dos fármacos , Feminino , Pontos de Checagem da Fase G2 do Ciclo Celular/efeitos dos fármacos , Células HeLa , Células Hep G2 , Humanos , Pontos de Checagem da Fase M do Ciclo Celular/efeitos dos fármacos , Células MCF-7 , Éteres Fenílicos/síntese química , Éteres Fenílicos/química , Fosforilação/efeitos dos fármacos
15.
Pharmazie ; 69(8): 633-6, 2014 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-25158576

RESUMO

Interactions between doxorubicin (DOX) and iron generate reactive oxygen species and contribute to DOX-induced heart failure. Hydrogen, as a selective antioxidant, is a promising potential therapeutic option for the treatment of a variety of diseases. Therefore, we investigated the preventive effects of hydrogen treatment on DOX-induced heart failure in rats. We found that cardiac function was significantly improved and that the plasma levels of oxidative-stress markers and myocardial autophagic activity were decreased in animals treated with hydrogen-containing saline. Therefore, we conclude that hydrogen-containing saline may have beneficial effects for doxorubicin-induced heart failure.


Assuntos
Antibióticos Antineoplásicos/antagonistas & inibidores , Antibióticos Antineoplásicos/toxicidade , Cardiotônicos , Doxorrubicina/antagonistas & inibidores , Doxorrubicina/toxicidade , Insuficiência Cardíaca/induzido quimicamente , Insuficiência Cardíaca/prevenção & controle , Hidrogênio/farmacologia , Cloreto de Sódio/química , Animais , Autofagia/efeitos dos fármacos , Western Blotting , Ecocardiografia , Insuficiência Cardíaca/diagnóstico por imagem , Hidrogênio/química , Masculino , Microscopia Eletrônica de Transmissão , Miocárdio/patologia , Estresse Oxidativo/efeitos dos fármacos , Soluções Farmacêuticas , Ratos , Ratos Wistar , Sobrevida , Função Ventricular Esquerda/efeitos dos fármacos
16.
Clin Cardiol ; 47(4): e24270, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38628050

RESUMO

BACKGROUND: Earlier studies showed a negative correlation between life's simple 7 (LS7) and high-sensitivity C-reactive protein (hs-CRP), but no association has been found between life's essential 8 (LE8), an improved version of LS7, and hs-CRP. HYPOTHESIS: This study investigated the association between LE8 and hs-CRP utilizing data from the National Health and Nutritional Examination Survey. METHODS: A total of 7229 adults were incorporated in our study. LE8 was scored according to American Heart Association guidelines, and LE8 was divided into health behaviors and health factors. Serum samples of the participants were used to measure hs-CRP. To investigate the association between LE8 and hs-CRP, weighted linear regression, and restricted cubic spline were utilized. RESULTS: Among 7229 participants, the average age was 48.03 ± 16.88 years, 3689 (51.2%) were females and the median hs-CRP was 1.92 (0.81-4.49) mg/L. In adjusted weighted linear regression, a negative correlation was observed between the LE8 score and hs-CRP. Compared with the low LE8 score, the moderate LE8 score ß was -0.533 (-0.646 to -0.420), and the high LE8 score ß was -1.237 (-1.376 to -1.097). Health behaviors and health factors were also negatively associated with hs-CRP. In stratified analyses, the negative correlation between LE8 and hs-CRP remained consistent across subgroups. CONCLUSION: There was a negative correlation between LE8 as well as its sub-indicator scores and hs-CRP. Maintaining a positive LE8 score may be conducive to lowering the level of hs-CRP.


Assuntos
Proteína C-Reativa , Doenças Cardiovasculares , Estados Unidos/epidemiologia , Adulto , Feminino , Humanos , Pessoa de Meia-Idade , Masculino , Estudos Transversais , Inquéritos Nutricionais , American Heart Association , Modelos Lineares , Fatores de Risco
17.
J Ethnopharmacol ; 330: 118235, 2024 Aug 10.
Artigo em Inglês | MEDLINE | ID: mdl-38648891

RESUMO

ETHNOPHARMACOLOGICAL RELEVANCE: Astragalus mongholicus Bunge (AM, recorded in http://www.worldfloraonline.org, 2023-08-03) is a kind of medicine food homology plant with a long medicinal history in China. Astragaloside III (AS-III) has immunomodulatory effects and is one of the most active components in AM. However, its underlying mechanism of action is still not fully explained. AIM OF THE STUDY: The research was designed to discuss the protective effects of AS-III on immunosuppression and to elucidate its prospective mechanism. MATERIALS AND METHODS: Molecular docking methods and network pharmacology analysis were used to comprehensively investigate potential targets and relative pathways for AS-III and immunosuppression. In order to study and verify the pharmacological activity and mechanism of AS-III in alleviating immunosuppression, immunosuppression mouse model induced by cyclophosphamide (CTX) in vivo and macrophage RAW264.7 cell model induced by hypoxia/lipopolysaccharide (LPS) in vitro were used. RESULTS: A total of 105 common targets were obtained from the AS-III-related and immunosuppression-related target networks. The results of network pharmacology and molecular docking demonstrate that AS-III may treat immunosuppression through by regulating glucose metabolism-related pathways such as regulation of lipolysis in adipocytes, carbohydrate digestion and absorption, cGMP-PKG signaling pathway, central carbon metabolism in cancer together with HIF-1 pathway. The results of molecular docking showed that AS-III has good binding relationship with LDHA, AKT1 and HIF1A. In CTX-induced immunosuppressive mouse model, AS-III had a significant protective effect on the reduction of body weight, immune organ index and hematological indices. It can also protect immune organs from damage. In addition, AS-III could significantly improve the expression of key proteins involved in energy metabolism and serum inflammatory factors. To further validate the animal results, an initial inflammatory/immune response model of macrophage RAW264.7 cells was constructed through hypoxia and LPS. AS-III improved the immune function of macrophages, reduced the release of NO, TNF-α, IL-1ß, PDHK-1, LDH, lactate, HK, PK and GLUT-1, and restored the decrease of ATP caused by hypoxia. Besides, AS-III was also demonstrated that it could inhibit the increase of HIF-1α, PDHK-1 and LDH by adding inhibitors and agonists. CONCLUSIONS: In this study, the main targets of AS-III for immunosuppressive therapy were initially analyzed. AS-III was systematically confirmed to attenuates immunosuppressive state through the HIF-1α/PDHK-1 pathway. These findings offer an experimental foundation for the use of AS-III as a potential candidate for the treatment of immunosuppression.


Assuntos
Simulação de Acoplamento Molecular , Farmacologia em Rede , Saponinas , Animais , Camundongos , Células RAW 264.7 , Saponinas/farmacologia , Lipopolissacarídeos , Masculino , Ciclofosfamida/farmacologia , Imunossupressores/farmacologia , Triterpenos/farmacologia , Transdução de Sinais/efeitos dos fármacos , Astrágalo/química
18.
Clin Cardiol ; 47(1): e24165, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-37795956

RESUMO

OBJECTIVE: Sex difference is commonly observed in hypertension. We aimed to assess sex differences in the associations of modifiable lifestyle and metabolic risk factors with risk of hypertension. DESIGN: National cross-sectional population study. SETTING: Data from the 2007 to 2018 National Health and Nutrition Examination Survey. PARTICIPANTS: 7087 adults aged ≥30 years without a prior history of hypertension. PRIMARY AND SECONDARY OUTCOME MEASURES: Odds ratios and population attributable fraction (PAF) of hypertension associated with 10 modifiable risk factors: five lifestyle risk factors (current smoking, excess alcohol intake, poor diet, physical inactivity, and unhealthy sleep), and five metabolic risk factors (obesity, diabetes, dyslipidaemia, hyperuricemia, and chronic kidney disease) in women versus men. RESULTS: Compared with women, men had 84% increased risk of prevalence of hypertension. The sex difference in risk for hypertension is more evident in those aged <60 years (p for interaction <.001). For those aged <60 years the combination of lifestyle risk factors accounted for a PAF of 27.2% in men and 48.8% in women, and the combination of metabolic risk factors accounted for a PAF similarly in men (37.4%) and women (38.2%). For those aged ≥60 years, the PAF of lifestyle risk factors was similar between men and women and the metabolic risk factors accounted for a greater proportion in women (33.0% vs. 14.5% in men). CONCLUSIONS: Sex differences may exist in the relation and attribution of lifestyle and metabolic risk factors to hypertension, which may have implications for implementing sex-specific strategies to prevent hypertension.


Assuntos
Diabetes Mellitus , Hipertensão , Adulto , Feminino , Humanos , Masculino , Estudos Transversais , Inquéritos Nutricionais , Fatores de Risco , Hipertensão/epidemiologia , Hipertensão/complicações , Diabetes Mellitus/epidemiologia , Prevalência
19.
Health Sci Rep ; 7(1): e1792, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-38196572

RESUMO

Background and Aims: To construct a bleeding events prediction model of nonvalvular atrial fibrillation (NVAF) patients receiving rivaroxaban. Methods: We conducted a retrospective cohort study in patients with NVAF who received rivaroxaban from June 2017 to March 2019. Demographic information and clinical characteristics were obtained from the electronic medical system. Univariate analysis was used to find the primary predictive factors of bleeding events in patients receiving rivaroxaban. Multiple analysis was conducted to screen the primary independent predictive factors selected from the univariate analysis. Finally, the independent influencing factors were applied to build a prediction model by using R software; then, a nomogram was established according to the selected variables visually, and the sensitivity and specificity of the model was evaluated. Results: Twelve primary predictive factors were selected by univariate analysis from 46 variables, and multivariate analysis showed that older age, higher prothrombin time (PT) values, history of heart failure and stroke were independent risk factors of bleeding events. The area under curve (AUC) for this novel nomogram model was 0.828 (95% CI: 0.763-0.894). The mean AUC over 10-fold stratified cross-validation was 0.787, and subgroup analysis validation also showed a satisfied AUC. In addition, the decision curve analysis showed that the PT in combination with CHA2DS2-VASc and HASBLED was more practical and accurate for predicting bleeding events than using CHA2DS2-VASc and HASBLED alone. Conclusions: PT in combination with CHA2DS2-VASc and HASBLED could be considered as a more practical and accurate method for predicting bleeding events in patients taking rivaroxaban.

20.
Adv Sci (Weinh) ; : e2400998, 2024 Jun 14.
Artigo em Inglês | MEDLINE | ID: mdl-38874015

RESUMO

MYB transcription factors have been linked to anthocyanin synthesis and various color phenotypes in plants. In apple, MYB10 confers a red-flesh phenotype due to a minisatellite insertion in its R6 promoter, but R6:MYB10 genotypes exhibit various degrees of red pigmentation in the flesh, suggesting the involvement of other genetic factors. Here, it is shown that MdWRKY10, a transcription factor identified via DNA pull-down trapping, binds to the promoter of MdMYB10 and activates its transcription. MdWRKY10 specifically interacts with the WDR protein MdTTG1 to join the apple MYB-bHLH-WDR (MBW) complex, which significantly enhances its transcriptional activation activity. A 163-bp InDel detected in the promoter region of the alleles of MdWRKY10 in a hybrid population of identical heterozygous genotypes regarding R6 by structural variation analysis, contains a typical W-box element that MdWRKY10 binds to for transactivation. This leads to increased transcript levels of MdWRKY10 and MdMYB10 and enhanced anthocyanin synthesis in the flesh, largely accounting for the various degrees of flesh red pigmentation in the R6 background. These findings reveal a novel regulatory role of the WRKY-containing protein complex in the formation of red flesh apple phenotypes and provide broader insights into the molecular mechanism governing anthocyanin synthesis in plants.

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