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1.
BMC Biol ; 20(1): 287, 2022 12 17.
Artículo en Inglés | MEDLINE | ID: mdl-36528592

RESUMEN

BACKGROUND: Inflammatory bowel diseases (IBDs) are characterized by sustained inflammation and/or ulcers along the lower digestive tract, and have complications such as colorectal cancer and inflammation in other organs. The current treatments for IBDs, which affect 0.3% of the global population, mainly target immune cells and inflammatory cytokines with a success rate of less than 40%. RESULTS: Here we show that berberine, a natural plant product, is more effective than the frontline drug sulfasalazine in treating DSS (dextran sulfate sodium)-induced colitis in mice, and that berberine not only suppresses macrophage and granulocyte activation but also promotes epithelial restitution by activating Lgr5+ intestinal stem cells (ISCs). Mechanistically, berberine increases the expression of Wnt genes in resident mesenchymal stromal cells, an ISC niche, and inhibiting Wnt secretion diminishes the therapeutic effects of berberine. We further show that berberine controls the expression of many circadian rhythm genes in stromal cells, which in turn regulate the expression of Wnt molecules. CONCLUSIONS: Our findings suggest that berberine acts on the resident stromal cells and ISCs to promote epithelial repair in experimental colitis and that Wnt-ß-Catenin signaling may be a potential target for colitis treatment.


Asunto(s)
Berberina , Colitis , Ratones , Animales , Berberina/farmacología , Berberina/uso terapéutico , Sulfato de Dextran/efectos adversos , Modelos Animales de Enfermedad , Colitis/inducido químicamente , Colitis/tratamiento farmacológico , Células Madre/metabolismo , Receptores Acoplados a Proteínas G/genética , Receptores Acoplados a Proteínas G/metabolismo , Inflamación/tratamiento farmacológico , Inflamación/metabolismo , Mucosa Intestinal/metabolismo
2.
J Cell Biochem ; 120(7): 11265-11273, 2019 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-30719773

RESUMEN

In this study, colorectal cancer (CRC)-diseased targets and resveratrol (Res)-associated targets were combined and constructed by the use of grouped databases for identification of the predicted targets. After production of target-functional protein interaction network of Res anti-CRC, the topological analysis was used to create the core targets of Res anti-CRC. All core targets performed the analyses of biological function and pathway enrichment to optimize the biological processes and key signaling pathways of Res anti-CRC. The resultant five core therapeutic targets of Res anti-CRC were identified as protein kinase B1 (AKT1), interleukin 6 (IL6), Tumor protein p53 (TP53), vascular endothelial growth factor, and mitogen-activated protein kinase 1, respectively. Biological processes of Res anti-CRC were predominantly associated with regulating apoptosis, immune response, cellular communication, signal transduction, and metabolism of the nuclide. In addition, the top 10 key signaling pathways were identified, respectively. In human CRC sample assays, CRC histologic sections showed elevated expression of AKT1 and IL6 proteins, accompanied with abnormal changes in blood molecules. In pharmacological experiments of Res anti-CRC in vitro, Res-treated HCT116 cells showed inhibited cell growth, induced cell death. In addition, downregulation of intracellular AKT1 and IL6 expression were checked in Res-treated HCT116 cells. Taken together, these bioinformatic findings and preliminary validated data uncovered pharmacological molecular mechanisms associated with Res anti-CRC, and further identified top five core therapeutic targets. Beneficially, these five predicted targets might serve as potential biomolecules for anti-CRC treatment.

3.
Zhongguo Zhong Yao Za Zhi ; 44(21): 4566-4572, 2019 Nov.
Artículo en Zh | MEDLINE | ID: mdl-31872649

RESUMEN

Nowadays,the advantages of traditional Chinese medicine(TCM) for treatment of tumors are increasingly prominent.Triptolide shows wide-spectrum and highly effective anti-tumor activity. Moreover,nano-carrier-based triptolide drug delivery system is more powerful in improving water solubility and pharmacokinetic behavior of the drug,but it is easy to cause toxic and side effects that should not be neglected on human body. Because of tumor vascular heterogeneity and PEGylation dilemma,nanoparticulate drug delivery systems need to overcome multiple physiological and pathological barriers from drug administration to functioning. It is difficult for traditional triptolide nanoparticulate drug delivery systems to achieve active accumulation of nano-drug in tumor tissues and specific drug release in tumor target site solely relying on enhanced permeability and retention effect of solid tumor,limiting their application and clinical transformation in treatment of tumors. Based on the traditional nano-preparation system,the new functionalized nano-drug delivery system further enhances the nano-drug enrichment,penetration and controlled release at the tumor sites,which is of great significance in improving bioavailability,anti-tumor efficacy and reducing the side effects of drugs. In this paper,we summarized and analyzed the researches on new triptolide functionalized nano-drug delivery system from four perspectives,including tumor active targeting,tumor microenvironment response,polymer-drug conjugates,and multidrug co-delivery for tumor treatment,expecting to provide ideas for in-depth research and clinical application of triptolide and some other active anti-tumor TCM ingredients.


Asunto(s)
Diterpenos/química , Sistemas de Liberación de Medicamentos , Nanopartículas , Fenantrenos/química , Compuestos Epoxi/química , Humanos
4.
Molecules ; 23(1)2018 Jan 20.
Artículo en Inglés | MEDLINE | ID: mdl-29361715

RESUMEN

Ethanol extract (EE) from Periplaneta americana (PA) is the main ingredient of Kangfuxin, which is a popular traditional chinese medicine (TCM) and has long been used for the clinical treatment of burns, wounds and ulcers. We compared the wound-healing activities of three extracts of PA using cutaneous wound-healing in mice as the bioactivity model. These three extracts were EE, total polysaccharide and total protein. We also tracked bioactive fractions in the EE by organic reagent extraction, column chromatography and HPLC. Seven compounds were successfully identified from the water elution fraction of the EE of PA using UPLC-MS. Among these compounds, four compounds (P2, P3, P4, P5(1)) were first reported in PA. Some of these compounds have been previously reported to have various pharmacological activities that could contribute to the high wound-healing activity of PA.


Asunto(s)
Proteínas de Insectos/química , Polisacáridos/química , Extractos de Tejidos/química , Cicatrización de Heridas/efectos de los fármacos , Animales , Etanol , Proteínas de Insectos/aislamiento & purificación , Masculino , Medicina Tradicional China , Ratones , Periplaneta , Polisacáridos/aislamiento & purificación , Solventes , Extractos de Tejidos/aislamiento & purificación
6.
Inhal Toxicol ; 28(4): 164-9, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-26986951

RESUMEN

Exposure to some kinds of volatile organic compounds (VOCs) leads to immune system disorders, liver and kidney damage, hematological change. However, there is little information about the effect of VOCs mixture on immune system and hematological parameter. In this study, 50 Kunming male mice were exposed in five similar chambers, 0 (control) and four different doses of VOCs mixture (G1-4) for consecutively 10 days at 2 h/day. The concentrations of VOCs mixture were as follows: formaldehyde, benzene, toluene and xylene 1.0 + 1.1 + 2.0 + 2.0, 3.0 + 3.3 + 6.0 + 6.0, 5.0 + 5.5 + 10.0 + 10.0 and 10.0 + 11.0 + 20.0 + 20.0 mg/m(3), respectively, which corresponded to 10, 30, 50 and 100 times of indoor air quality standard in china. One day following VOCs exposure, spleen T lymphocyte subpopulation, serum biochemical markers and peripheral blood cells in mice were analyzed, respectively. VOCs exposure decreased significantly erythrocyte count (RBC), platelet (PLT) in peripheral blood in mice. While aspartate aminotransaminase (AST), alanine aminotransaminase (ALT), alkaline phosphatase (ALP) and creatinine (CREA) in serum increased significantly in G4 mice versus controls. Flow cytometry analysis showed that the number of splenic lymphocyte subpopulation cells decreased significantly in G2, 3 and 4 mice in comparison with normal Kunming mice. These results indicate inhalation of VOCs mixture affects CD4/8 subpopulations, liver, kidney function and some hematological parameters in mice.


Asunto(s)
Contaminantes Atmosféricos/toxicidad , Compuestos Orgánicos/toxicidad , Alanina Transaminasa/sangre , Fosfatasa Alcalina/sangre , Animales , Aspartato Aminotransferasas/sangre , Creatinina/sangre , Recuento de Eritrocitos , Masculino , Ratones , Bazo/citología , Bazo/efectos de los fármacos , Bazo/inmunología , Linfocitos T/efectos de los fármacos , Linfocitos T/inmunología
7.
J Asian Nat Prod Res ; 17(10): 988-95, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-26499169

RESUMEN

Three new dihydroisocoumarin glucosides, termed periplanosides A-C (1-3), a known analog, pericanaside (4), and the other twenty known compounds were isolated from the insect Periplaneta americana. Their structures including absolute configurations were determined by comprehensive spectroscopic analyses and computational methods. Biological evaluation showed that compound 2 could stimulate collagen production by 31.2% in human dermal fibroblasts-adult (HDFa) at the concentration of 30 µM, indicating its significance in skin repair and ulcer.


Asunto(s)
Colágeno , Glucósidos/aislamiento & purificación , Isocumarinas/aislamiento & purificación , Isocumarinas/farmacología , Periplaneta/química , Adulto , Animales , Colágeno/biosíntesis , Colágeno/efectos de los fármacos , Fibroblastos/metabolismo , Glucósidos/química , Humanos , Isocumarinas/química , Estructura Molecular
8.
J Antimicrob Chemother ; 69(11): 3011-9, 2014 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-24997316

RESUMEN

OBJECTIVES: Infections of hospitalized patients caused by biofilms formed by Staphylococcus aureus represent a major problem. Using in vitro and in vivo biofilm models, we evaluated the efficacy of the novel oxazolidinone FYL-67, by using linezolid (the only clinically approved oxazolidinone antibiotic) as a control, for inhibiting S. aureus biofilm formation. METHODS: Antibiofilm activity was determined using strains of methicillin-susceptible S. aureus and methicillin-resistant S. aureus. We studied the mechanism(s) and pharmacodynamics of antibiofilm activity as follows: (i) effects of pre- and post-exposure to FYL-67 or linezolid on biofilm formation; (ii) the effect of FYL-67 on biofilm structure; (iii) the role of FYL-67 in biofilm composition; (iv) effects on cell morphology; and (v) efficacy of FYL-67 and linezolid using an in vivo murine model of catheter infection. RESULTS: FYL-67 effectively inhibited biofilm formation using in vitro and in vivo assays. CONCLUSIONS: Our data suggest that oxazolidinone compounds, such as FYL-67, may serve as antibiofilm agents.


Asunto(s)
Antiinfecciosos/farmacología , Biopelículas/efectos de los fármacos , Oxazolidinonas/farmacología , Staphylococcus aureus/efectos de los fármacos , Acetamidas/farmacología , Animales , Antiinfecciosos/química , Linezolid , Masculino , Ratones , Ratones Endogámicos C57BL , Oxazolidinonas/química , Staphylococcus aureus/aislamiento & purificación , Resultado del Tratamiento
9.
BMC Med Genet ; 15: 43, 2014 Apr 15.
Artículo en Inglés | MEDLINE | ID: mdl-24735206

RESUMEN

BACKGROUND: To identify transcription factors (TFs) and single nucleotide polymorphisms (SNPs) of Lrh1 (also named Nr5a2) and its homologous genes in Lrh1-knockout pancreas of mice. METHODS: The RNA-Seq data GSE34030 were downloaded from Gene Expression Omnibus (GEO) database, including 2 Lrh1 pancreas knockout samples and 2 wild type samples. All reads were processed through TopHat and Cufflinks package to calculate gene-expression level. Then, the differentially expressed genes (DEGs) were identified via non-parametric algorithm (NOISeq) methods in R package, of which the homology genes of Lrh1 were identified via BLASTN analysis. Furthermore, the TFs of Lrh1 and its homologous genes were selected based on TRANSFAC database. Additionally, the SNPs were analyzed via SAM tool to record the locations of mutant sites. RESULTS: Total 15683 DEGs were identified, of which 23 was Lrh1 homology genes (3 up-regulated and 20 down-regulated). Fetoprotein TF (FTF) was the only TF of Lrh1 identified and the promoter-binding factor of FTF was CYP7A. The SNP annotations of Lrh1 homologous genes showed that 92% of the mutation sites were occurred in intron and upstream. Three SNPs of Lrh1 were located in intron, while 1819 SNPs of Phkb were located in intron and 1343 SNPs were located in the upstream region. CONCLUSION: FTF combined with CYP7A might play an important role in Lrh1 regulated pancreas-specific transcriptional network. Furthermore, the SNPs analysis of Lrh1 and its homology genes provided the candidate mutant sites that might affect the Lrh1-related production and secretion of pancreatic fluid.


Asunto(s)
Proteínas de Unión al ADN/genética , Regulación de la Expresión Génica/genética , Redes Reguladoras de Genes/genética , Páncreas/metabolismo , Polimorfismo de Nucleótido Simple/genética , Receptores Citoplasmáticos y Nucleares/genética , Receptores Citoplasmáticos y Nucleares/metabolismo , Factores de Transcripción/genética , Animales , Colesterol 7-alfa-Hidroxilasa/genética , Colesterol 7-alfa-Hidroxilasa/metabolismo , Biología Computacional , Ratones , Ratones Noqueados , Anotación de Secuencia Molecular
10.
Phytother Res ; 28(4): 560-7, 2014 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-23818450

RESUMEN

Nobiletin (5, 6, 7, 8, 3' 4'-hexamethoxyflavone) is a major anticancer component in juice from zhishi (Rutaceae). This study aimed to investigate the inhibitory effect of Nobiletin on hepatic cancer cells both in vitro and in vivo. The 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT), growth curve, and clonogenic assay showed that nobiletin inhibited the proliferation of SMMC-7721 cells in vitro. Hoechst staining observed the characteristics of cell apoptosis in nobiletin-treated cells, and the apoptotic rates of treated groups were increased in a dose-dependent manner. Flow cytometric analysis demonstrated that nobiletin could block the cell cycle arrested at G2 phase. Cell cycle analysis was performed using flow cytometry. Results showed that cell cycle phase distribution analysis showed G2 arrest. It was found that nobiletin downregulated the expressions of Bcl-2 and COX-2 and up-regulated the expressions of Bax and caspase-3 in SMMC-7721 cells by western blotting. The experiment in vivo demonstrated that nobiletin significantly inhibited the growth of H22 transplantable tumor, downregulated the expressions of COX-2, up-regulated the expressions of Bax and caspase-3 detected by immunohistochemistry and western blotting, and the ratios of Bcl-2/Bax were decreased. Our results suggest that nobiletin has significant inhibitory effects on hepatocellular carcinoma both in vitro and in vivo.


Asunto(s)
Antineoplásicos Fitogénicos/farmacología , Apoptosis/efectos de los fármacos , Carcinoma Hepatocelular/patología , Flavonas/farmacología , Animales , Carcinoma Hepatocelular/metabolismo , Caspasa 3/metabolismo , Ciclo Celular/efectos de los fármacos , Línea Celular Tumoral , Proliferación Celular/efectos de los fármacos , Ciclooxigenasa 2/metabolismo , Regulación Neoplásica de la Expresión Génica , Humanos , Masculino , Ratones , Proteínas Proto-Oncogénicas c-bcl-2/metabolismo , Proteína X Asociada a bcl-2/metabolismo
11.
J Orthop Surg Res ; 19(1): 30, 2024 Jan 03.
Artículo en Inglés | MEDLINE | ID: mdl-38172990

RESUMEN

BACKGROUND: Osteonecrosis of the femoral head (ONFH) is a common disabling disease in orthopedics. Blocking the progression of ONFH in the early stage is essential for avoiding total hip replacement. PURPOSES: The purpose of this study is to evaluate the effect of invasive treatment on early-stage ONFH. METHODS: According to the PRISMA guidelines, relevant English databases were searched in August 2022 to collect published research. Extract result indicators and conduct network meta-analysis using R software. RESULTS: A total of 15 RCTs were included. All patients were diagnosed with early-stage ONFH. The surface under the cumulative ranking curve (SUCRA) showed that CD + BMMSC and CD + PRP were the most effective in improving HHS. The results of the league table showed that CD + BMMSC was superior to CD alone. Meanwhile, the SUCRA for FR showed that CD + BG + BMMSC was the most likely to be the most effective in reducing FR. The league table revealed that CD + BG, CD + BG + BMMSC, and CD + BMMSC were superior to CD alone, with statistically significant differences. CONCLUSION: Considering the HHS and FR, CD + BMMSC may be the optimal treatment option to effectively delay the progression of ONFH and restore the postoperative function of patients. REGISTRATION NUMBER: The study protocol has been registered on the PROSPERO platform (CRD42023380169).


Asunto(s)
Artroplastia de Reemplazo de Cadera , Necrosis de la Cabeza Femoral , Humanos , Necrosis de la Cabeza Femoral/cirugía , Resultado del Tratamiento , Cabeza Femoral/cirugía , Metaanálisis en Red , Descompresión Quirúrgica/métodos
12.
Int Immunopharmacol ; 133: 112170, 2024 May 30.
Artículo en Inglés | MEDLINE | ID: mdl-38691919

RESUMEN

Acute kidney injury (AKI) is characterized by a sudden decline in renal function. Traditional Chinese medicine has employed Fuzi for kidney diseases; however, concerns about neurotoxicity and cardiotoxicity have constrained its clinical use. This study explored mesaconine, derived from processed Fuzi, as a promising low-toxicity alternative for AKI treatment. In this study, we assessed the protective effects of mesaconine in gentamicin (GM)-induced NRK-52E cells and AKI rat models in vitro and in vivo, respectively. Mesaconine promotes the proliferation of damaged NRK-52E cells and down-regulates intracellular transforming growth factor ß1 (TGF-ß1) and kidney injury molecule 1 (KIM-1) to promote renal cell repair. Concurrently, mesaconine restored mitochondrial morphology and permeability transition pores, reversed the decrease in mitochondrial membrane potential, mitigated mitochondrial dysfunction, decreased ATP production, inhibited inflammatory factor release, and reduced early apoptosis rates. In vivo, GM-induced AKI rat models exhibited elevated AKI biomarkers, in which mesaconine was effectively reduced, indicating improved renal function. Mesaconine enhanced superoxide dismutase activity, reduced malondialdehyde content, alleviated inflammatory infiltrate, mitigated tubular and glomerular lesions, and downregulated NF-κB (nuclear factor-κb) p65 expression, leading to decreased tumor necrosis factor-α (TNF-α) and IL-1ß (interleukin-1ß) levels in GM-induced AKI animals. Furthermore, mesaconine inhibited the expression of renal pro-apoptotic proteins (Bax, cytochrome c, cleaved-caspase 9, and cleaved-caspase 3) and induced the release of the anti-apoptotic protein bcl-2, further suppressing apoptosis. This study highlighted the therapeutic potential of mesaconine in GM-induced AKI. Its multifaceted mechanisms, including the restoration of mitochondrial dysfunction, anti-inflammatory and antioxidant effects, and apoptosis mitigation, make mesaconine a promising candidate for further exploration in AKI management.


Asunto(s)
Aconitum , Lesión Renal Aguda , Apoptosis , Riñón , Mitocondrias , Ratas Sprague-Dawley , Animales , Lesión Renal Aguda/tratamiento farmacológico , Lesión Renal Aguda/inducido químicamente , Lesión Renal Aguda/patología , Apoptosis/efectos de los fármacos , Aconitum/química , Mitocondrias/efectos de los fármacos , Mitocondrias/metabolismo , Masculino , Ratas , Línea Celular , Riñón/efectos de los fármacos , Riñón/patología , Gentamicinas/toxicidad , Medicamentos Herbarios Chinos/uso terapéutico , Medicamentos Herbarios Chinos/farmacología , Aconitina/análogos & derivados , Aconitina/farmacología , Aconitina/uso terapéutico , Modelos Animales de Enfermedad , Potencial de la Membrana Mitocondrial/efectos de los fármacos , Humanos , Antiinflamatorios/farmacología , Antiinflamatorios/uso terapéutico , Diterpenos
13.
Front Chem ; 12: 1339364, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38318112

RESUMEN

Aconitine (AC), which is the primary bioactive diterpene alkaloid derived from Aconitum L plants, have attracted considerable interest due to its unique structural feature. Additionally, AC demonstrates a range of biological activities, such as its ability to enhance cardiac function, inhibit tumor growth, reduce inflammation, and provide analgesic effects. However, the structure-activity relationships of AC are remain unclear. A clear understanding of these relationships is indeed critical in developing effective biomedical applications with AC. In line with these challenges, this paper summarized the structural characteristics of AC and relevant functional and bioactive properties and the structure-activity relationships presented in biomedical applications. The primary temporal scope of this review was established as the period spanning from 2010 to 2023. Subsequently, the objective of this review was to provide a comprehensive understanding of the specific action mechanism of AC, while also exploring potential novel applications of AC derivatives in the biomedical field, drawing upon their structural characteristics. In conclusion, this review has provided a comprehensive analysis of the challenges and prospects associated with AC in the elucidation of structure-bioactivity relationships. Furthermore, the importance of exploring modern biotechnology approaches to enhance the potential biomedical applications of AC has been emphasized.

14.
Adv Sci (Weinh) ; 11(20): e2304326, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38544338

RESUMEN

Chronic atrophic gastritis (AG) is initiated mainly by Helicobacter pylori infection, which may progress to stomach cancer following the Correa's cascade. The current treatment regimen is H. pylori eradication, yet evidence is lacking that this treatment is effective on later stages of AG especially gastric gland atrophy. Here, using AG mouse model, patient samples, gastric organoids, and lineage tracing, this study unraveled gastric stem cell (GSC) defect as a crucial pathogenic factor in AG in mouse and human. Moreover, a natural peptide is isolated from a traditional Chinese medicine that activated GSCs to regenerate gastric epithelia in experimental AG models and revitalized the atrophic gastric organoids derived from patients. It is further shown that the peptide exerts its functions by stabilizing the EGF-EGFR complex and specifically activating the downstream ERK and Stat1 signaling. Overall, these findings advance the understanding of AG pathogenesis and open a new avenue for AG treatment.


Asunto(s)
Modelos Animales de Enfermedad , Gastritis Atrófica , Células Madre , Gastritis Atrófica/tratamiento farmacológico , Gastritis Atrófica/metabolismo , Animales , Ratones , Humanos , Células Madre/metabolismo , Células Madre/efectos de los fármacos , Medicina Tradicional China/métodos , Péptidos/farmacología , Mucosa Gástrica/metabolismo , Mucosa Gástrica/efectos de los fármacos , Infecciones por Helicobacter/tratamiento farmacológico , Enfermedad Crónica , Transducción de Señal/efectos de los fármacos
15.
Bioorg Med Chem Lett ; 23(12): 3650-3, 2013 Jun 15.
Artículo en Inglés | MEDLINE | ID: mdl-23659858

RESUMEN

In an effort to understand the origin of blood-pressure lowering effects observed in recent clinical trials with 11ß-HSD1 inhibitors, we examined a set of 11ß-HSD1 inhibitors in a series of relevant in vitro and in vivo assays. Select 11ß-HSD1 inhibitors reduced blood pressure in our preclinical models but most or all of the blood pressure lowering may be mediated by a 11ß-HSD1 independent pathway.


Asunto(s)
11-beta-Hidroxiesteroide Deshidrogenasa de Tipo 1/antagonistas & inhibidores , Inhibidores Enzimáticos/farmacología , Hipertensión/tratamiento farmacológico , Hipertensión/enzimología , Triazoles/farmacología , Animales , Humanos , Ratones , Ratones Noqueados , Ratas , Ratas Endogámicas SHR
16.
Zhonghua Fu Chan Ke Za Zhi ; 48(2): 129-33, 2013 Feb.
Artículo en Zh | MEDLINE | ID: mdl-23544495

RESUMEN

OBJECTIVE: To investigate the influence of pertussis toxin (PTX) on G protein-coupled estrogen receptor (GPER)-mediated activation of phosphatidylinositol 3-kinase (PI3K)/protein kinase B (Akt) signaling activated by 17ß-estradiol (17ß-E2) in endometrial carcinoma cells. METHODS: Expressions of GPER protein were detected by immunohistochemical SP method in Ishikawa and HEC-1A cells. Changes of levels of GPER, ERα and ERß protein and the activation of Akt protein were observed by western blot in the two cells after they were treated by PTX for 30 minutes at different concentrations (0, 0.1, 0.5, 1.0 µg/ml), and then co-stimulated with with 1×10(-6) mol/L 17ß-E2 respectively at different time (Ishikawa 30 minutes, HEC-1A 15 minutes). RESULTS: (1) Immunohistochemical SP method showed that GPER was positive stained in cell cytoplasm of Ishikawa and HEC-1A cell. (2) After co-treated with PTX at different concentrations (0, 0.1, 0.5, 1.0 µg/ml) and 10(-6) mol/L 17ß-E2, in Ishikawa cell, the ratio of p-Akt/Akt was 0.74 ± 0.54, 0.34 ± 0.06, 0.18 ± 0.03, 0.07 ± 0.15, the gray values of GPER was 0.872 ± 0.490, 0.395 ± 0.054, 0.145 ± 0.014, 0.034 ± 0.008, and with increasing concentration of PTX, the ratio of p-Akt/Akt and the expression of GPER decreased gradually (P < 0.05), which was most obviously when the concentration was 1.0 µg/ml (F = 63.729, P = 0.0001; F = 160.284, P = 0.0001); ERα and ERß protein had no significant change among different groups (P > 0.05). In HEC-1A cell, the ratio of p-Akt/Akt was 0.73 ± 0.09, 0.26 ± 0.14, 0.11 ± 0.03, 0, the Gray values of GPER is 0.927 ± 0.134, 0.485 ± 0.022, 0.194 ± 0.004, 0, and with increasing concentration of PTX, the ratio of p-Akt/Akt and the expression of GPER decreased gradually (P < 0.05), which were also completely inhibited when the concentration was 1 µg/ml (F = 1039.321, P = 0.0001; F = 109.646, P = 0.0001), ERα protein had no significant differences (P > 0.05) among different groups. ERß was negatively expressed. CONCLUSION: The results proposed that the activation of PI3K/Akt signaling in Ishikawa and HEC-1A cells could be inhibited after blocking the role of GPER by PTX.


Asunto(s)
Neoplasias Endometriales/metabolismo , Toxina del Pertussis/farmacología , Fosfatidilinositol 3-Quinasa/metabolismo , Proteínas Proto-Oncogénicas c-akt/metabolismo , Receptores de Estrógenos/metabolismo , Receptores Acoplados a Proteínas G/metabolismo , Línea Celular Tumoral , Relación Dosis-Respuesta a Droga , Regulación hacia Abajo/efectos de los fármacos , Neoplasias Endometriales/patología , Activación Enzimática/efectos de los fármacos , Estradiol/farmacología , Receptor alfa de Estrógeno/metabolismo , Receptor beta de Estrógeno/metabolismo , Femenino , Regulación de la Expresión Génica/efectos de los fármacos , Humanos , Inmunohistoquímica , Fosforilación , Receptores de Estrógenos/antagonistas & inhibidores , Receptores Acoplados a Proteínas G/antagonistas & inhibidores , Transducción de Señal/efectos de los fármacos
17.
Zhonghua Wei Zhong Bing Ji Jiu Yi Xue ; 35(2): 206-208, 2023 Feb.
Artículo en Zh | MEDLINE | ID: mdl-36916383

RESUMEN

The fatality rate of liver failure caused by fatal amanita poisoning is high, and there are no effective antidote drugs in China. On July 30, 2020, the department of infectious diseases and liver diseases of the First People's Hospital of Yunnan Province admitted a 67-year-old female patient with liver failure caused by fatal amanita poisoning. The patient went to the emergency department for treatment due to abdominal pain, vomiting and diarrhea after eating 350-400 g of amanita mushroom for 2 days, accompanied by fatigue for 1 day. There was no abnormality in physical examination. Laboratory indexes: alanine aminotransferase (ALT) 4 798 U/L, aspartate aminotransferase (AST) 10 030 U/L, activated partial thromboplastin time (APTT) 57.5 s, prothrombin time (PT) 72.1 s, international normalized ratio (INR) 8.66, prothrombinactivity (PA) 10%. Based on the patient's medical history, clinical manifestations and laboratory data, the diagnosis was amanita peptide mushroom poisoning and acute liver failure. According to the mechanism of amanita toxin poisoning as enterohepatic circulation, endoscopic retrograde cholangiopancreatography and ultrasound-guided gallbladder puncture and drainage for drainage of bile to discharge toxins were performed to interrupt the enterohepatic circulation of toxins. However, both methods failed, so open cholecystostomy was performed. Because the patient's coagulation function was very poor, artificial hepatic plasma exchange was given to improve coagulation function before open cholecystostomy, and eventually bile was drained successfully. After a total of 19 days of comprehensive medical treatment, the patient was cured and discharged from the hospital, and no sequelae was found after 1 year of follow-up. For such patients, early identification of the disease is required, and blocking the enterohepatic circulation of toxins as soon as possible according to the characteristics and toxicological mechanism of toxins may be the key treatment for rescuing patients with liver failure poisoned by amanita toxin, and it is necessary to combine comprehensive treatments such as active fluid replacement and blood purification to further improve the survival rate.


Asunto(s)
Colecistostomía , Fallo Hepático , Intoxicación por Setas , Femenino , Humanos , Anciano , Amanita , China , Drenaje , Intoxicación por Setas/terapia , Intoxicación por Setas/complicaciones
18.
Front Pharmacol ; 14: 1118017, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37124193

RESUMEN

Aberrant mitophagy has been identified as a driver for energy metabolism disorder in most cardiac pathological processes. However, finding effective targeted agents and uncovering their precise modulatory mechanisms remain unconquered. Fuzi, the lateral roots of Aconitum carmichaelii, shows unique efficacy in reviving Yang for resuscitation, which has been widely used in clinics. As a main cardiotonic component of Fuzi, mesaconine has been proven effective in various cardiomyopathy models. Here, we aimed to define a previously unrevealed cardioprotective mechanism of mesaconine-mediated restoration of obstructive mitophagy. The functional implications of mesaconine were evaluated in doxorubicin (DOX)-induced heart failure models. DOX-treated mice showed characteristic cardiac dysfunction, ectopic myocardial energy disorder, and impaired mitophagy in cardiomyocytes, which could be remarkably reversed by mesaconine. The cardioprotective effect of mesaconine was primarily attributed to its ability to promote the restoration of mitophagy in cardiomyocytes, as evidenced by elevated expression of PINK1, a key mediator of mitophagy induction. Silencing PINK1 or deactivating mitophagy could completely abolish the protective effects of mesaconine. Together, our findings suggest that the cardioprotective effects of mesaconine appear to be dependent on the activation of PINK1-induced mitophagy and that mesaconine may constitute a promising therapeutic agent for the treatment of heart failure.

20.
Artículo en Inglés | MEDLINE | ID: mdl-35897388

RESUMEN

Under the restriction of the national "double carbon" goal, how to realize the coordination between urbanization and low-carbon development in the Yellow River Basin is a problem worthy of attention. In this paper, a new urbanization and ecological carrying capacity evaluation index system is established to evaluate the new urbanization level and ecological carrying capacity of the Yellow River Basin. On this basis, the uncoordinated coupling level of new urbanization and ecological carrying capacity in the Yellow River Basin is measured by using the improved uncoordinated coupling model, and its temporal and spatial characteristics and internal impact mechanism are analyzed. The study shows that the new urbanization and ecological carrying capacity of the Yellow River Basin has a benign development trend as a whole. Shandong province belongs to the low-level uncoordinated coupling type; Gansu Province and Qinghai Province belong to the running-in uncoordinated type; and Shanxi Province, the Inner Mongolia Autonomous Region, Shaanxi Province, and the Ningxia Hui Autonomous Region belong to the antagonistic uncoordinated coupling type. The uncoordinated coupling degree between new urbanization and ecological carrying capacity in the Yellow River Basin has a spatial interaction effect. It presents a low-level cluster centered on Shaanxi Province and Shandong Province and a high-level cluster centered on Gansu Province, Qinghai Province, and the Ningxia Hui Autonomous Region. From the perspective of the internal main impact mechanism, water resources have a two-way impact on the development of the two systems of new urbanization and ecological carrying capacity; the number of permanent residents and the level of scientific and technological investment have a one-way impact on the process of new urbanization; and the green coverage rate of built-up areas has a one-way impact on the development of ecological carrying capacity. The main contributions of this paper are as follows. First, the evaluation index system of new urbanization and ecological carrying capacity has been improved in combination with the new development concept. The evaluation of new urbanization by this index system is more in line with the current national requirements for high-quality development. Second, the impact of potential resources and human regulation has been added to the traditional ecological carrying capacity evaluation index system, and the evaluation of ecological carrying capacity by this index system is more in line with reality. Thirdly, taking the time effect into account, an improved uncoordinated coupling method is proposed. Using this method to evaluate the relationship between systems is conducive to bringing the dynamic relationship within the system into the evaluation system, which is more in line with the reality of system changes. Fourth, from the perspective of problem diagnosis, research on the relationship between new urbanization and ecological carrying capacity will help to find the internal mechanism that affects the coordinated development of new urbanization and ecological carrying capacity in the Yellow River Basin. This method is universal for exploring the internal influence mechanism of the relationship between systems.


Asunto(s)
Conservación de los Recursos Naturales , Urbanización , Carbono , China , Ecosistema , Humanos , Ríos
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