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1.
Artículo en Inglés | MEDLINE | ID: mdl-38843782

RESUMEN

BACKGROUND: Diabetes is a significant risk factor for cognitive impairment. Therefore early identification of cognitive impairment in diabetic patients is particularly important. The aim of this study was to assess the relationship between Cardiometabolic index(CMI) and cognitive function in a diabetic population. METHODS: A cross-sectional study was conducted by collecting information from the National Health and Nutrition Examination Survey (NHANES) 2011-2014. Multiple linear regression models were used to investigate the correlation between CMI and low cognitive function in a diabetic population. Threshold effects analysis and fitted smoothing curves were used to describe the nonlinear links. Interaction tests and subgroup analyses were also performed. RESULTS: A total of 1050 people participated in this study, including 561 men and 489 women. In the fully corrected model, CMI was positively associated with low cognitive performance as assessed by CERAD W-L, AFT and DSST [OR=1.37 (1.14, 1.72),P=0.0074], [OR=1.21 (1.04, 1.51),P=0.0126] and [OR=1.27 (1.08, 1.63),P= 0.0253]. Our study found that diabetic patients with higher CMI were at greater risk of developing low cognitive function. The effect of the subgroups on the positive association of CMI with cognitive impairment was not significant. A non-linear association between low cognitive performance and CMI was determined by CERAD W-L, AFT and DSST (log likelihood ratio < 0.05). In addition our also study found that CMI was a better predictor of cognitive impairment in diabetes than WWI. CONCLUSION: Increased CMI is associated with an increased risk of cognitive impairment in people with diabetes.CMI can be used as a new anthropometric measure for predicting cognitive impairment in diabetes.

2.
Zhongguo Zhong Yao Za Zhi ; 49(10): 2798-2817, 2024 May.
Artículo en Zh | MEDLINE | ID: mdl-38812180

RESUMEN

Based on the network Meta-analysis, the efficacy and safety of different traditional Chinese medicine(TCM) injections in the treatment of chronic pulmonary heart disease(CPHD) were systematically evaluated. CNKI, Wanfang, VIP, SinoMed, Web of Science, PubMed, EMbase, and Cochrane Library were searched to collect randomized controlled trial(RCT) of TCM injection in the treatment of CPHD from inception to October 1, 2023. The quality of the included studies was evaluated by the bias risk assessment tool recommended by the Cochrane systematic evaluation manual version 5.3. Stata 17.0 and RevMan 5.4 software were used for statistical analysis of the data. Finally, 103 RCTs were included, involving 9 332 patients and 13 kinds of TCM injections. Network Meta-analysis yielded the following results.(1)In terms of improving the total clinical effective rate, the top three intervention measures in SUCRA ranking are Shuxuetong Injection + conventional western medicine>Ligustrazine Injection + conventional western medicine>Xinmailong Injection + conventional western medicine.(2)In terms of reducing pulmonary artery pressure, the top three intervention measures in SUCRA ranking are Salvia Miltiorrhiza Ligustrazine Injection + conventional western medicine>Ligustrazine Injection + conventional western medicine>Shenmai Injection + conventional western medicine.(3)In terms of improving left ventricular ejection fraction(LVEF), the top three intervention measures in SUCRA ranking are Xinmailong Injection + conventional western medicine>Danhong Injection + conventional western medicine>Ginkgo Damo Injection + conventional western medicine.(4) In terms of reducing brain natriuretic peptide(BNP), the top three intervention measures in SUCRA ranking are Xinmailong Injection + conventional wes-tern medicine>Ginkgo Damo Injection + conventional western medicine>Danhong Injection + conventional western medicine.(5) In terms of increasing arterial oxygen partial pressure(PaO_2) and reducing arterial carbon dioxide partial pressure(PaCO_2), the top three intervention measures in SUCRA ranking are Shenxiong Glucose Injection + conventional western medicine>Shenmai Injection + conventional western medicine>Shenfu Injection + conventional western medicine.(6) In terms of improving arterial oxygen saturation(SaO_2), the top three intervention measures in SUCRA ranking are Salvia Miltiorrhiza Ligustrazine Injection + conventional western medicine>Xinmailong Injection + conventional western medicine>Shenmai Injection + conventional western medicine.(7) In terms of increasing the percentage of forced expiratory volume in the first second(FEV_1%), the top three intervention measures in SUCRA ranking are Shenfu Injection + conventional western medicine>Tanshinone Sodium Ⅱ_A Sulfonate Injection + conventional western medicine>Shenmai Injection + conventional western medicine.(8) In terms of increasing the proportion of forced expiratory volume to forced vital capacity in the first second(FEV_1/FVC), the top three intervention measures in SUCRA ranking are Salvia Miltiorrhiza Ligustrazine Injection + conventional western medicine>Shuxuetong Injection + conventional western medicine>Danhong Injection + conventional western medicine.(9) In terms of safety, neither the experimental group nor the control group experienced any serious adverse drug reactions during the treatment period. In summary, combining TCM injection with conventional western medicine treatment can improve the comprehensive efficacy of treating CPHD, reduce pulmonary artery pressure, and improve cardiopulmonary function and arterial blood gas levels. However, due to the limitations of the quality and quantity of research methodology included, the above conclusions need to be further validated by more well-designed and high-quality RCT.


Asunto(s)
Medicamentos Herbarios Chinos , Metaanálisis en Red , Enfermedad Cardiopulmonar , Ensayos Clínicos Controlados Aleatorios como Asunto , Humanos , Medicamentos Herbarios Chinos/administración & dosificación , Medicamentos Herbarios Chinos/uso terapéutico , Enfermedad Cardiopulmonar/tratamiento farmacológico , Enfermedad Crónica , Inyecciones , Medicina Tradicional China , Resultado del Tratamiento
3.
Zhongguo Zhong Yao Za Zhi ; 48(24): 6778-6797, 2023 Dec.
Artículo en Zh | MEDLINE | ID: mdl-38212037

RESUMEN

Bayesian network Meta-analysis was performed to evaluate the efficacy and safety of different Chinese patent medicines in the treatment of dilated cardiomyopathy. The PubMed, EMbase, Cochrane Library, CNKI, Wanfang, and VIP were searched for the randomized controlled trial(RCT) from the inception to May 2023. The quality of the included RCT was evaluated by the Cochrane risk of bias assessment tool, and the data were analyzed by RStudio 3.6.3 calling the "gemtc" package. A total of 96 RCTs involving 8 452 patients, 11 Chinese patent medicines, and 8 outcome indicators were included. Network Meta-analysis is described as follows.(1)In terms of improving clinical total effective rate, except Yixinshu Capsules + conventional western medicine, Shexiang Baoxin Pills + conventional western medicine, and Xinshuai Mixture + conventional western medicine, the other Chinese patent medicines combined with conventional western medicine were superior to conventional western medicine alone, and Shenqi Yiqi Dropping Pills + conventional western medicine had the best effect.(2)In terms of improving left ventricular ejection fraction(LVEF), except Yixinshu Capsules + conventional western medicine and Shensong Yangxin Capsules + conventional western medicine, other Chinese patent medicines combined with conventional western medicine outperformed conventional western medicine alone, and Shexiang Baoxin Pills + conventional western medicine had the best effect.(3)In terms of reducing left ventricular end-diastolic dimension(LVEDD), Getong Tongluo Capsules + conventional western medicine, Xinshuai Mixture + conventional western medicine, Huangqi Mixture + conventional western medicine, Tongxinluo Capsules + conventional western medicine, Wenxin Granules + conventional western medicine, and Qili Qiangxin Capsules + conventional western medicine were better than conventional western medicine alone, and Wenxin Granules + conventional western medicine had the best effect.(4)There was no significant difference in reducing left ventricular end-systolic diameter(LVESD) between Chinese patent medicines combined with conventional western medicine and conventional western medicine alone.(5)In terms of improving 6-minute walking trail(6MWT), Yangxinshi Tablets + conventional western medicine, Yixinshu Capsules + conventional western medicine, Shenqi Yiqi Dropping Pills + conventional western medicine, Wenxin Granules + conventional western medicine, and Qili Qiangxin Capsules + conventional western medicine were superior to conventional western medicine alone, and Shenqi Yiqi Dropping Pills + conventional western medicine had the best effect.(6)In reducing brain natriuretic peptide(BNP), Xinshuai Mixture + conventional western medicine ourperformed conventional western medicine alone.(7)In reducing hypersensitive C-reactive protein(hs-CRP), Shenqi Yiqi Dropping Pills + conventional western medicine, Qili Qiangxin Capsules + conventional western medicine outperformed conventional western medicine alone, and Qili Qiangxin Capsules + conventional western medicine had the best effect.(8)In terms of safety, adverse reactions were reported in both groups. In conclusion, Chinese patent medicine combined with conventional western medicine were more effective in the treatment of dilated cardiomyopathy. The combinations relieve clinical symptoms and improve cardiac function indexes, and thus can be used according to the patients' conditions in clinical practice. However, limited by the quality and sample size of the included studies, the conclusion remains to be verified by multi-center, large-sample, and high-quality RCT in the future.


Asunto(s)
Cardiomiopatía Dilatada , Medicamentos Herbarios Chinos , Humanos , Teorema de Bayes , Cardiomiopatía Dilatada/tratamiento farmacológico , Medicamentos Herbarios Chinos/efectos adversos , Medicamentos Herbarios Chinos/uso terapéutico , Péptido Natriurético Encefálico , Metaanálisis en Red , Medicamentos sin Prescripción/efectos adversos , Medicamentos sin Prescripción/uso terapéutico , Volumen Sistólico , Función Ventricular Izquierda
4.
Mycoses ; 65(8): 834-840, 2022 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-35689543

RESUMEN

BACKGROUND: Tinea capitis is an infection of the scalp and hair shaft caused by dermatophytes that predominantly occurs in children. Skin fungal infections have been found to be associated with alterations in the overall bacterial and fungal communities. However, the scalp microbiome in tinea capitis have not been fully investigated. OBJECTIVES: To investigate and compare the scalp bacterial and fungal microbiomes between children with tinea capitis and healthy children and between children and adults. METHODS: Skin samples were collected from the scalp. Bacterial and fungal community compositions were analysed by amplification sequencing of the V3-V4 of 16S rDNA and ITS1-5F, respectively. RESULTS: The predominant fungi detected using amplicon sequencing were consistent with the culture- or real-time PCR-positive pathogens in most samples. Children with tinea capitis had lower fungal and higher bacterial Shannon diversity than healthy children. A higher relative abundance of pathogenic fungi and significant alterations in the bacterial community in the lesional sites of tinea capitis than healthy scalps. Compared with adults, healthy children were characterised by higher Shannon diversities with significantly lower relative abundances of Malassezia and Cutibacterium and higher relative abundances of Candida and Streptococcus. CONCLUSIONS: We demonstrated that tinea capitis was characterised by significant alterations in both fungal and bacterial communities and amplicon sequencing could be a complementary method for pathogen identification.


Asunto(s)
Dermatomicosis , Tiña del Cuero Cabelludo , Adulto , Niño , Dermatomicosis/patología , Cabello/patología , Humanos , Cuero Cabelludo , Piel/microbiología , Tiña del Cuero Cabelludo/microbiología
5.
Cell Biol Int ; 44(1): 189-199, 2020 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-31441181

RESUMEN

Protosappanin-A (PrA) and oleanolic acid (OA), which are important effective ingredients isolated from Caesalpinia sappan L., exhibit therapeutic potential in multiple diseases. This study focused on exploring the mechanisms of PrA and OA function in podocyte injury. An in vitro model of podocyte injury was induced by the sC5b-9 complex and assays such as cell viability, apoptosis, immunofluorescence, quantitative real-time polymerase chain reaction, and western blot were performed to further investigate the effects and mechanisms of PrA and OA in podocyte injury. The models of podocyte injury were verified to be successful as seen through significantly decreased levels of nephrin, podocin, and CD2AP and increased level of desmin. The sC5b-9-induced podocyte apoptosis was inhibited in injured podocytes treated with PrA and OA, accompanied by increased protein levels of nephrin, podocin, CD2AP, and Bcl2 and decreased levels of desmin and Bax. The p-AKT/p-mTOR levels were also reduced by treatment of PrA and OA while AKT/mTOR was unaltered. Further, the effects of PrA and OA on injured podocytes were similar to that of LY294002 (a PI3K-AKT inhibitor). PrA and OA were also seen to inhibit podocyte apoptosis and p-AKT/p-mTOR levels induced by IGF-1 (a PI3K-AKT activator). Our data demonstrate that PrA and OA can protect podocytes from injury or apoptosis, which may occur through inhibition of the abnormal activation of AKT-mTOR signaling.

6.
Med Mycol ; 58(1): 66-70, 2020 Jan 01.
Artículo en Inglés | MEDLINE | ID: mdl-31329921

RESUMEN

Common histopathologic techniques are used to diagnose fungal infections, but the diagnostic identification of mycoses in tissue specimens is often difficult, particularly when fungi rarely occur in a specimen. The aim of this study was to evaluate the application of fluorescein-labeled chitinase staining to formalin-fixed and paraffin-embedded (FFPE) tissues. We studied 79 archival FFPE tissues from patients diagnosed with fungal disease, including 38 cases of sporotrichosis and 41 cases of other fungal infections. The tissue sections were subjected to periodic acid-Schiff (PAS) staining, Gomori's methenamine silver (GMS) staining, and fluorescein-labeled chitinase staining to detect fungal elements. Culture- and/or hematoxylin-eosin-positive samples were used to estimate the diagnostic sensitivity of each staining method, with the results showing that PAS, GMS, and fluorescein-labeled chitinase staining had sensitivities of 50.6, 70.9, and 68.4%, respectively. The three staining results were the same for all fungal infections except for sporotrichosis and chromoblastomycosis. Fluorescein-labeled chitinase staining exhibited high sensitivity in cases of sporotrichosis and poor performance in detecting muriform cells of chromoblastomycosis. On the whole, the sensitivity of fluorescein-labeled chitinase staining was greater than that of PAS and similar to that of GMS staining. Therefore, the results of our study suggest that fluorescein-labeled chitinase staining is a potentially useful diagnostic tool in the diagnosis of fungal infections.


Asunto(s)
Quitinasas/química , Fluoresceína/química , Micosis/diagnóstico , Coloración y Etiquetado , Bancos de Muestras Biológicas , Fluorescencia , Formaldehído , Humanos , Micosis/microbiología , Adhesión en Parafina , Sensibilidad y Especificidad
7.
Chembiochem ; 20(10): 1256-1259, 2019 05 15.
Artículo en Inglés | MEDLINE | ID: mdl-30644154

RESUMEN

High specificity, low background, good biocompatibility and photostability are common properties of aggregation-induced emission luminogens (AIEgens). In this study, an AIEgen FAS was used in live HepG2 cells, an in vitro model of liver steatosis, to quantify lipid droplet number and size instead of the traditional method of only measuring fluorescence intensity emitted from fluorescence dye stained in lipid droplet. In parallel, another AIEgen, TPE-Ph-In, was used to perform continuous monitoring and quantitation of mitochondrial membrane potential in the same batch of live HepG2 cells. The data show a significant increase in lipid droplet numbers after 24 h treatment by amiodarone and a significant increase in both lipid droplet numbers and size after 48 h amiodarone treatment. Moreover, the data suggest a significant increase in mitochondria membrane potential in cells treated with amiodarone for 24 and 48 h, with restoration to pre-treatment level 24 h after removal of the amiodarone. Further investigation is needed to fully understand the underlying mechanism.


Asunto(s)
Hígado Graso/metabolismo , Gotas Lipídicas/ultraestructura , Membranas Mitocondriales/ultraestructura , Amiodarona/química , Fluorescencia , Colorantes Fluorescentes/química , Células Hep G2 , Humanos , Potencial de la Membrana Mitocondrial
8.
Pancreatology ; 19(5): 760-768, 2019 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-31255446

RESUMEN

BACKGROUND: Pancreatic cancer is one of the leading causes of cancer mortality and lacks efficient biomarkers for early diagnosis. In the early stages of pancreatic cancer, humoral immunity can respond to a certain amount of tumor-associated antigens (TAAs) with the production of corresponding autoantibodies. Such autoantibody-targeted TAAs (autoTAAs) are highly likely to indicate early events during pancreatic carcinogenesis. Herein, we performed a comprehensive analysis of these autoTAAs to explore their physiological function and their involvement and prognostic value in pancreatic cancer. METHODS: We first searched the literature to identify the autoTAAs. A PPI network of these autoTAAs was constructed, and core network modules were extracted by Cytoscape software. GO annotation and KEGG pathway analysis were performed to analyze the main physiological functions of these autoTAAs. The prognostic value of autoTAAs in pancreatic cancer was analyzed by using RNA-seq data generated by TCGA. RESULTS: The PPI network including 98 autoTAAs was constructed, and 2 subgroups were extracted as core modules. GO and KEGG analysis revealed that key functions and pathways of these autoTAAs were significantly enriched in nucleotide repair, protein synthesis, and cancer-associated events. MSH2, EZR, PGK1, VCL and ANXA2 have prognostic value in pancreatic cancer, and high mRNA expression of these 5 proteins is associated with unfavorable prognosis in pancreatic cancer. CONCLUSIONS: AutoTAAs may be associated with early events in the carcinogenesis of pancreatic cancer. MSH2, EZR, PGK1, VCL and ANXA2 predict poor prognosis in pancreatic cancer. Some autoTAAs also have prognostic value in other cancers.


Asunto(s)
Antígenos de Neoplasias/análisis , Autoanticuerpos/análisis , Biomarcadores de Tumor/análisis , Neoplasias Pancreáticas/inmunología , Estudios de Casos y Controles , Humanos , Redes y Vías Metabólicas , Valor Predictivo de las Pruebas , Pronóstico , Fracciones Subcelulares/química
9.
Anal Bioanal Chem ; 411(21): 5437-5444, 2019 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-31300858

RESUMEN

To meet the need for high-throughput immunoassays, many multiplex fluorescent immunoassays have been proposed. Most of them need different kinds of fluorescent label indicators during the test. In this work, a novel indirect ELISA-inspired dual-channel fluorescent immunoassay based on 3-mercaptopropionic acid capped CdTe/ZnS quantum dots (QDs) was constructed. The ELISA wells were coated with two kinds of antigen-QD complex. When the primary antibodies were present in a sample, they mediated the binding of a secondary antibody-DNA-gold nanoparticle complex to the antigen-QD complex. Then the gold nanoparticles quenched the fluorescence of the QDs and a decrease in fluorescence intensity was observed. Thus, the amount of primary antibody could be estimated from the decrease of fluorescence intensity. Owing to the wide absorption range and the relatively narrow emission band of the QDs, the dual-channel fluorescent immunoassay system could work at the same excitation wavelength and the emission wavelengths of each channel had no interference. As a result, two different kinds of primary antibody could be detected at the same time in one ELISA well, which simplified the operation and greatly improved the efficiency. Besides, only one type of secondary antibody needs to be added to the prepared microtiter plates, which further simplified the operation during the detection procedure. This dual-channel fluorescent immunoassay system will provide new insights into high-throughput immunodetection. Graphical abstract.


Asunto(s)
Compuestos de Cadmio/química , Ensayo de Inmunoadsorción Enzimática/métodos , Técnica del Anticuerpo Fluorescente/métodos , Puntos Cuánticos , Sulfuros/química , Telurio/química , Compuestos de Zinc/química , Nanopartículas del Metal/química , Microscopía Electrónica de Transmisión
10.
Exp Mol Pathol ; 105(3): 334-344, 2018 12.
Artículo en Inglés | MEDLINE | ID: mdl-30290159

RESUMEN

Rapamycin (sirolimus) is employed as an immunosuppressant following liver transplant, to inhibit the re-growth of cancer cells following liver resection for hepatocellular carcinoma (HCC), and for the treatment of advanced HCC. Rapamycin also induces the expression of antioxidant enzymes in the liver, suggesting that pretreatment with the drug could provide a potential strategy to reduce ischemia reperfusion injury following liver surgery. The aim of this study was to further investigate the actions of rapamycin in inducing expression of the antioxidant enzymes heme oxygenase-1 (HO-1) and peroxiredoxin-1 (Prx-1) in normal liver and in tumorigenic liver cells. A rat model of segmental hepatic ischemia and reperfusion, cultured freshly-isolated rat hepatocytes, and tumorigenic H4IIE rat liver cells in culture were employed. Expression of HO-1 and Prx-1 was measured using quantitative PCR and western blot. Rapamycin pre-treatment of normal liver in vivo or normal hepatocytes in vitro led to a substantial induction of mRNA encoding HO-1 and Prx-1. The dose-response curve for the action of rapamycin on mRNA expression was biphasic, showing an increase in expression at 0 - 0.1 µM rapamycin but a decrease from maximum at concentrations greater than 0.1 µM. By contrast, in H4IIE cells, rapamycin inhibited the expression of HO-1 and Prx-1 mRNA. Oltipraz, an established activator of transcription factor Nrf2, caused a large induction of HO-1 and Prx-1 mRNA. The dose response curve for the inhibition by rapamycin of HO-1 and Prx-4 mRNA expression, determined in the presence of oltipraz, was monophasic with half maximal inhibition at about 0.01 µM. It is concluded that, at concentrations comparable to those used clinically, pre-treatment of the liver with rapamycin induces the expression of HO-1 and Prx-1. However, the actions of rapamycin on the expression of these two antioxidant enzymes in normal hepatocytes are complex and, in tumorigenic liver cells, differ from those in normal hepatocytes. Further studies are warranted to evaluate preconditioning the livers of patients subject to liver resection or liver transplant with rapamycin as a viable strategy to reduce IR injury following liver surgery.


Asunto(s)
Hemo-Oxigenasa 1/biosíntesis , Hepatocitos/efectos de los fármacos , Inmunosupresores/farmacología , Neoplasias Hepáticas/metabolismo , Peroxirredoxinas/biosíntesis , Sirolimus/farmacología , Animales , Línea Celular Tumoral , Hepatocitos/metabolismo , Masculino , Ratas , Ratas Zucker
11.
Inorg Chem ; 57(18): 11537-11542, 2018 Sep 17.
Artículo en Inglés | MEDLINE | ID: mdl-30156839

RESUMEN

Two-photon excitable fluorescent dyes with integrated functions of targeted imaging and photodynamic therapy (PDT) are highly desired for the development of cancer theranostic agents. Herein, fluorescence resonance energy transfer (FRET) dyads, AceDAN-H2Por-Lyso (1a) and AceDAN-ZnPor-Lyso (1b), were developed for two-photon excited (TPE) lysosome-targeted fluorescence imaging and PDT of cancer cells. Under one-photon or two-photon excitation, the AceDAN donor can effectively transfer the excited state energy to the porphyrin acceptor via high efficient FRET, leading to the generation of deep-red fluorescence and singlet oxygen for cell imaging and PDT, respectively. 1a and 1b exhibit high photocytotoxicity and low dark cytotoxicity, in addition to strong lysosomal targeting capability in living cells. By taking the advantages of the two-photon absorption properties of the AceDAN donor and the properly distributed S1 and T1 states of the porphyrin acceptor, the AceDAN-porphyrin dyads 1a and 1b have been successfully applied to TPE-fluorescence imaging for tracking the significant morphology changes of cancer cells under two-photon laser irradiation.


Asunto(s)
Diagnóstico por Imagen/métodos , Colorantes Fluorescentes/síntesis química , Lisosomas/metabolismo , Metaloporfirinas/química , Naftalenos/química , Fotoquimioterapia/métodos , Fotones , Porfirinas/química , Células A549 , Transferencia Resonante de Energía de Fluorescencia , Colorantes Fluorescentes/química , Humanos , Microscopía Confocal , Estructura Molecular , Morfolinas/química
12.
13.
Artículo en Inglés | MEDLINE | ID: mdl-28242673

RESUMEN

Clarithromycin (CLA) is a commonly recommended drug for Helicobacter pylori eradication. However, the prevalence of CLA-resistant H. pylori is increasing. Although point mutations in the 23S rRNA are key factors for CLA resistance, other factors, including efflux pumps and regulation genes, are also involved in the resistance of H. pylori to CLA. Guanosine 3'-diphosphate 5'-triphosphate and guanosine 3',5'-bispyrophosphate [(p)ppGpp)], which are synthesized by the bifunctional enzyme SpoT in H. pylori, play an important role for some bacteria to adapt to antibiotic pressure. Nevertheless, no related research involving H. pylori has been reported. In addition, transporters have been found to be related to bacterial drug resistance. Therefore, this study investigated the function of SpoT in H. pylori resistance to CLA by examining the shifts in the expression of transporters and explored the role of transporters in the CLA resistance of H. pylori A ΔspoT strain was constructed in this study, and it was shown that SpoT is involved in H. pylori tolerance of CLA by upregulating the transporters HP0939, HP1017, HP0497, and HP0471. This was assessed using a series of molecular and biochemical experiments and a cDNA microarray. Additionally, the knockout of genes hp0939, hp0471, and hp0497 in the resistant strains caused a reduction or loss (the latter in the Δhp0497 strain) of resistance to CLA. Furthermore, the average expression levels of these four transporters in clinical CLA-resistant strains were considerably higher than those in clinical CLA-sensitive strains. Taken together, our results revealed a novel molecular mechanism of H. pylori adaption to CLA stress.


Asunto(s)
Antibacterianos/uso terapéutico , Claritromicina/uso terapéutico , Farmacorresistencia Bacteriana/genética , Infecciones por Helicobacter/tratamiento farmacológico , Helicobacter pylori/efectos de los fármacos , Proteínas de Transporte de Membrana/metabolismo , Enzimas Multifuncionales/genética , Proteínas Bacterianas/genética , Proteínas Bacterianas/metabolismo , Guanosina Pentafosfato/metabolismo , Guanosina Tetrafosfato/metabolismo , Infecciones por Helicobacter/microbiología , Helicobacter pylori/genética , Humanos , Proteínas de Transporte de Membrana/genética , Pruebas de Sensibilidad Microbiana
14.
Faraday Discuss ; 196: 351-362, 2017 02 22.
Artículo en Inglés | MEDLINE | ID: mdl-27901544

RESUMEN

Early detection and appropriate management of chronic kidney disease can reduce the progression of kidney failure and cardiovascular disease. The urine albumin to creatinine ratio (UACR) test is a standard urine test for identifying individuals at high risk of developing progressive kidney disease. In this study, IDATPE, a novel fluorescent probe with aggregation-induced emission (AIE) features, is successfully developed for creatinine detection and quantitation. An excellent correlation between fluorescent light intensity and creatinine concentration is achieved. In addition, BSPOTPE, a reported excellent AIE bioprobe for human serum albumin (HSA) quantitation, is used together with IDATPE in artificial urine for UACR testing. The mutual interference of HSA and creatinine when the bioprobes are used for quantitation is characterised, with promising results. Further improvements and potential applications in CKD quantitation are highlighted.


Asunto(s)
Colorantes Fluorescentes/análisis , Insuficiencia Renal Crónica/diagnóstico por imagen , Urinálisis/métodos , Creatinina/análisis , Fluorescencia , Colorantes Fluorescentes/síntesis química , Colorantes Fluorescentes/química , Humanos , Estructura Molecular , Albúmina Sérica Humana/análisis
15.
Chemistry ; 20(25): 7796-802, 2014 Jun 16.
Artículo en Inglés | MEDLINE | ID: mdl-24863388

RESUMEN

A selective release system was demonstrated with a dual-cargo loaded MSNs. When stimulated by different signals (UV or H(+)), this system could selectively release different kinds of cargoes individually. Furthermore, this system has been used to provide a combination of chemotherapy and biotherapy for cancer treatment. This controlled release system could be an important step in the development of more effective and sophisticated nanomedicine and nanodevices, due to the possibility of selective release of a complex multi-drug.


Asunto(s)
Nanopartículas/química , Dióxido de Silicio/química , Sistemas de Liberación de Medicamentos , Humanos , Dióxido de Silicio/administración & dosificación
16.
Inorg Chem ; 53(22): 12186-90, 2014 Nov 17.
Artículo en Inglés | MEDLINE | ID: mdl-25345549

RESUMEN

A useful strategy for ratiometric fluorescent detecting of Ag(+) is demonstrated. Upon selective binding of Ag(+) to a BODIPY-porphyrin dyad (1), the synergistic coupling of two functions, namely the suppressing of FRET from BODIPY donor to porphyrin acceptor and the fluorescence quenching of porphyrin acceptor, leads to exceptionally large changes in the intensity ratio of two distinct emissions (F513/F654) which allow for the ratiometric detecting of Ag(+) with excellent sensitivity in solution and living cells.


Asunto(s)
Compuestos de Boro/química , Transferencia Resonante de Energía de Fluorescencia/métodos , Colorantes Fluorescentes/química , Porfirinas/química , Compuestos de Plata/análisis , Técnicas de Cultivo de Célula , Línea Celular , Supervivencia Celular/efectos de los fármacos , Colorantes Fluorescentes/síntesis química , Colorantes Fluorescentes/toxicidad , Humanos , Microscopía Confocal , Microscopía Fluorescente , Imagen Molecular/métodos , Sensibilidad y Especificidad
17.
Zhonghua Yi Xue Za Zhi ; 94(38): 3005-7, 2014 Oct 21.
Artículo en Zh | MEDLINE | ID: mdl-25547704

RESUMEN

OBJECTIVE: To explore the expressions of cancerous inhibitor of protein phosphatase 2A (CIP2A) and osteopontin (OPN) and evaluate their roles in bladder cancer. METHODS: RNA was isolated from 38 cases of patients with bladder cancer and 12 cases of normal bladder tissue by TRIzol method from May 2010 to December 2012. And reverse transcription (RT)-PCR was used to detect the expressions of CIP2A and OPN. The expression levels of CIP2A and OPN in 99 cases of patients with bladder cancer and 12 cases of normal tissue were detected by immunohistochemical staining. RESULTS: The positive expression rate of CIP2A mRNA and OPN mRNA were 76.32% (29/38) and 92.11% (35/38) in bladder cancer while there was no expression in normal tissue (both P < 0.05). The positive rates of CIP2A and OPN protein were 63.64% (63/99)and 84.85% (84/99)in cases of bladder cancer tissues while CIP2A was not detected in normal tissues. The positive expression rate of OPN in normal tissues was 2/12 (both P < 0.05). The CIP2A and OPN proteins were both expressed in 58/99 cases of bladder cancer tissues while neither of them was expressed in 13 cases. In 8 cases, CIP2A was expressed while OPN was not. In another 20 cases, OPN was expressed while CIP2A was not (r = 0.300, P < 0.05). CONCLUSIONS: The expression levels of CIP2A and OPN in tissue of bladder cancer are higher than those of normal controls. And CIP2A and OPN may be used as indicators of biological behaviors and serve as new molecular diagnostic markers for bladder cancer.


Asunto(s)
Neoplasias de la Vejiga Urinaria , Autoantígenos , Humanos , Péptidos y Proteínas de Señalización Intracelular , Proteínas de la Membrana , Osteopontina , ARN Mensajero
18.
Zhonghua Yi Xue Za Zhi ; 94(34): 2681-3, 2014 Sep 16.
Artículo en Zh | MEDLINE | ID: mdl-25511597

RESUMEN

OBJECTIVE: To explore the expression of cancerous inhibitor of PP2A (CIP2A) and evaluate its role in bladder cancer. METHODS: RT-PCR was used to detect the expression of CIP2A mRNA from 38 cases of patients with bladder cancer and 12 cases of normal bladder tissue. The CIP2A protein expression levels in 99 cases of patients with bladder cancer and 12 cases of normal tissue was detected by immunohistochemical staining . And the serum contents of CIP2A protein of 38 patients with bladder cancer and 40 normal controls were detected by ELISA. RESULTS: The expression of CIP2A mRNA was detected in 29/38 cases (76.32%) of bladder cancer. And there was no expression in normal tissue (P < 0.05). The positive rate of CIP2A protein was 63.64% in 99 cases of bladder cancer tissues and no expression detected in normal tissues(P < 0.05). ELISA results showed that the serum content of CIP2A in patients with bladder cancer was significantly higher than that in normal controls (median:0.015 2 vs 0.001 8 ng/L, P < 0.05). CONCLUSIONS: The tissue and serum expressions of CIP2A in patients with bladder cancer are higher than those in normal controls. And CIP2A may be used as an indicator of the biological behavior of bladder cancer.


Asunto(s)
Neoplasias de la Vejiga Urinaria , Autoantígenos , Biomarcadores de Tumor , Humanos , Péptidos y Proteínas de Señalización Intracelular , Proteínas de la Membrana , ARN Mensajero
19.
Chin J Integr Med ; 2024 Feb 08.
Artículo en Inglés | MEDLINE | ID: mdl-38329655

RESUMEN

Acute myocardial infarction (AMI), characterized by high incidence and mortality rates, poses a significant public health threat. Reperfusion therapy, though the preferred treatment for AMI, often exacerbates cardiac damage, leading to myocardial ischemia/reperfusion injury (MI/RI). Consequently, the development of strategies to reduce MI/RI is an urgent priority in cardiovascular therapy. Chinese medicine, recognized for its multi-component, multi-pathway, and multi-target capabilities, provides a novel approach for alleviating MI/RI. A key area of interest is the nuclear factor E2-related factor 2 (Nrf2)/heme oxygenase-1 (HO-1) pathway. This pathway is instrumental in regulating inflammatory responses, oxidative stress, apoptosis, endoplasmic reticulum stress, and ferroptosis in MI/RI. This paper presents a comprehensive overview of the Nrf2/HO-1 signaling pathway's structure and its influence on MI/RI. Additionally, it reviews the latest research on leveraging Chinese medicine to modulate the Nrf2/HO-1 pathway in MI/RI treatment.

20.
Front Pharmacol ; 15: 1377359, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38868667

RESUMEN

Pyroptosis is a type of programmed cell death that is mediated by both typical and atypical pathways and ultimately leads to the lysis and rupture of cell membranes and the release of proinflammatory factors, triggering an intense inflammatory response. Heart failure (HF) is a serious and terminal stage of various heart diseases. Myocardial hypertrophy, myocardial fibrosis, ventricular remodeling, oxidative stress, the inflammatory response and cardiomyocyte ionic disorders caused by various cardiac diseases are all risk factors for and aggravate HF. Numerous studies have shown that pyroptosis can induce and exacerbate these reactions, causing progression to HF. Therefore, targeting pyroptosis is a promising strategy to treat HF. This paper summarizes the role of pyroptosis in the development of HF and the underlying mechanism involved. Recent research progress on the ability of traditional Chinese medicine (TCM) extracts and formulas to inhibit pyroptosis and treat HF was summarized, and some traditional Chinese medicine extracts and formulas can alleviate different types of HF, including heart failure with preserved ejection fraction (HFpEF), heart failure with reduced ejection fraction (HFrEF), and heart failure with midrange ejection fraction (HFmrEF), by targeting pyroptosis. These findings may provide new ideas and evidence for the treatment or adjuvant treatment of HF by targeting pyroptosis.

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