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1.
Adv Mater ; 36(1): e2310503, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-37961011

RESUMO

High-performance n-type polymeric mixed ionic-electronic conductors (PMIECs) are essential for realizing organic electrochemical transistors (OECTs)-based low-power complementary circuits and biosensors, but their development still remains a great challenge. Herein, by devising two novel n-type polymers (f-BTI2g-SVSCN and f-BSeI2g-SVSCN) containing varying selenophene contents together with their thiophene-based counterpart as the control, it is demonstrated that gradually increasing selenophene loading in polymer backbones can simultaneously yield lowered lowest unoccupied molecular orbital levels, boosted charge-transport properties, and improved ion-uptake capabilities. Therefore, a remarkable volumetric capacitance (C*) of 387.2 F cm-3 and a state-of-the-art OECT electron mobility (µe,OECT ) of 0.48 cm2 V-1 s-1 are synchronously achieved for f-BSeI2g-SVSCN having the highest selenophene content, yielding an unprecedented geometry-normalized transconductance (gm,norm ) of 71.4 S cm-1 and record figure of merit (µC*) value of 191.2 F cm-1 V-1 s-1 for n-type OECTs. Thanks to such excellent performance of f-BSeI2g-SVSCN-based OECTs, a glucose sensor with a remarkably low detection limit of 10 nMm and decent selectivity is further implemented, demonstrating the power of selenophene substitution strategy in enabling high-performance n-type PMIECs for biosensing applications.

2.
Chemosphere ; 340: 139846, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37598945

RESUMO

The selenium (Se)-deficient soil belt in China has gained widespread attention. During large-scale soil surveys in China, Se-rich soils within low-Se belts have been identified. However, the sources of Se in those soils and the controlling factors for their enrichment remain unclear. Here we summarize Se concentrations and spatial distributions in the Yuanzhou district of the Loess Plateau. We evaluated Se variations in soil profiles, Se migration into water bodies, and considered soil indicators, topographic characteristics and the influence of land-use types on soil Se concentrations. The average Se concentration in the topsoil of the Yuanzhou district was 0.164 µg/g. High-Se soils (>0.222 µg/g) were found in the western valley plain and the southern red bed hilly area, as well as sporadically in higher elevation forestland and grassland areas in the east. Enrichment of Se in the topsoil in the eastern and southern areas was primarily due to Se adsorption and accumulation by soil organic matter as well as enrichment in gypsum, berlinite, and clay minerals during soil formation. Widespread enrichment in the southern area was linked to high Se concentrations in red Tertiary sedimentary rocks. In the western area, enrichment of Se in topsoil was found on both sides of the Qingshui River at low elevations with gentle slopes, with river water being the primary carrier of Se enrichment. These findings provide valuable insights into the epigenetic geochemical behavior of soil Se in China's low-Se belt that accounts for development of Se-rich soils in the region.


Assuntos
Selênio , Solo , China , Florestas , Água
4.
J Trace Elem Med Biol ; 75: 127094, 2023 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-36265320

RESUMO

BACKGROUND: Allergic rhinitis (AR) is a chronic inflammatory disease of the nasal mucosa mediated by a variety of inflammatory mediators. Zinc (Zn) is one of the main essential trace elements in the human body and plays a variety of biological functions including the inhibition of inflammatory responses. This study aimed to investigate the effects and mechanism of Zn on the ovalbumin (OVA)-induced AR mouse model. METHOD: In this study, we established a model of AR by treating mice with OVA after feeding them with different doses of Zn. ELISA, real-time quantitative PCR, western blot and immunohistochemistry were used to detect the protein expression and mRNA transcription level of IgE, inflammatory cytokines and p38, respectively. RESULTS: The authors identified that immunoglobulin E concentrations were significantly higher in the Zn-deficient mice than in the Zn-normal group; Zn supplementation significantly reversed the increase in IgE concentrations caused by Zn deficiency. The increased concentrations of interleukin-6 and tumor necrosis factor-α in serum caused by Zn deficiency were reduced by Zn supplementation. The study further found that Zn deficiency could significantly increase the expression and activity of the p38 MAPK protein, while its levels were significantly decreased after Zn supplementation. The role of Zn supplement in the inflammatory response induced by Zn deficiency was verified by Zn-deficient mice with a p38 pathway inhibitor (SB203580), and it was observed that the elevated concentrations of IgE and inflammatory cytokines induced by Zn deficiency could be significantly reversed. CONCLUSION: Our data indicated that Zn exerted anti-allergic and anti-inflammatory effects by regulating the p38 MAPK activation in the AR mouse model. The findings provided evidence that Zn might be beneficial in regulating AR.


Assuntos
Rinite Alérgica , Zinco , Proteínas Quinases p38 Ativadas por Mitógeno , Animais , Camundongos , Rinite Alérgica/tratamento farmacológico , Fator de Necrose Tumoral alfa , Zinco/farmacologia
5.
Nutr Hosp ; 39(6): 1256-1263, 2022 Dec 20.
Artigo em Inglês | MEDLINE | ID: mdl-36173186

RESUMO

Introduction: Introduction: type 2 diabetes (T2DM) is a complex disease affected by lifestyle and genetic factors. Although the drugs currently used to treat T2DM have certain curative effects, they still have some adverse side effects. Therefore, it is urgent to find new effective drugs with few side effects to cure T2DM. Objective: to study the role of Inonotus obliquus (IO) in diabetic model mice. Methods: we used high-fat diet (HFD) combined with streptozocin (STZ) to establish a diabetic mouse model. Mice were divided into non-high-fat diet group (ND), diabetes model group (HFD + STZ) and IO-treated diabetes model group (IO). The mice in the IO group were orally treated with IO (150 mg/kg) at 10 ml/kg for five weeks. Body weight, glucose level, food intake and water consumption, glucose tolerance and insulin tolerance were evaluated in all mice. The pathological sections of liver, kidney and pancreas were observed by hematoxylin-eosin staining. Results: after IO administration, the blood glucose level, water consumption, low-density lipoprotein (LDL) and triacylglycerol (TG) levels of mice decreased. Compared with the HFD + STZ group, the number of normal islet ß cells increased and focal necrosis of the liver was significantly reduced in the IO administration group. Conclusions: IO reduced the levels of blood glucose, restored body weight, and enhanced insulin sensitivity along with insulin tolerance and glucose tolerance in diabetic mice. Additionally, IO also reversed HFD and STZ-induced organ injury.


Introducción: Introducción: la diabetes mellitus tipo 2 (T2DM) es una enfermedad compleja influenciada por el estilo de vida y los factores genéticos. En la actualidad, aunque los medicamentos para la diabetes tipo 2 tienen cierto efecto curativo, todavía tienen algunos efectos secundarios. Por lo tanto, es urgente encontrar nuevos medicamentos para la diabetes tipo 2 que tengan un buen efecto curativo y menos efectos secundarios. Objetivo: estudiar el papel del Inonotus obliquus (IO) en ratones diabéticos. Métodos: se estableció un modelo de ratón diabético con dieta de alto contenido en grasas (HFD) y estreptozocina (STZ). Los ratones se dividieron en el grupo de dieta no alta en grasas (ND), el grupo modelo de diabetes mellitus (HFD + STZ) y el grupo modelo de diabetes mellitus tratado con IO. Los ratones del grupo IO recibieron 10 ml/kg de IO (150 mg/kg) durante cinco semanas. Se observaron el peso corporal, el nivel de azúcar en sangre, la ingesta de alimentos, la ingesta de agua potable, la tolerancia a la glucosa y la tolerancia a la insulina de los ratones de cada grupo, y se estudiaron muestras de biopsias hepáticas, renales y pancreáticas mediante tinción de hematoxilina eosina. Resultados: los niveles de glucosa en sangre, el consumo de agua, la lipoproteína de baja densidad (LDL) y los triglicéridos (TG) disminuyeron después de la administración de IO. En comparación con el grupo HFD+STZ, el número de células ß pancreáticas normales y la necrosis focal hepática disminuyeron significativamente en el grupo IO. Conclusiones: el IO redujo el nivel de glucosa en sangre, ayudó a recuperar el peso corporal y mejorar la sensibilidad a la insulina, la tolerancia a la insulina y la tolerancia a la glucosa en ratones diabéticos. Además, el IO revirtió el daño orgánico inducido por HFD y STZ.


Assuntos
Diabetes Mellitus Experimental , Diabetes Mellitus Tipo 2 , Insulinas , Camundongos , Animais , Diabetes Mellitus Tipo 2/tratamento farmacológico , Dieta Hiperlipídica/efeitos adversos , Estreptozocina/efeitos adversos , Glicemia , Diabetes Mellitus Experimental/tratamento farmacológico , Peso Corporal , Insulinas/efeitos adversos , Extratos Vegetais/uso terapêutico , Insulina
6.
Contrast Media Mol Imaging ; 2022: 8990629, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36043146

RESUMO

Allergic rhinitis is one of the common chronic inflammatory diseases of the nasal mucosa. In order to investigate the effect of zinc on ovalbumin induced allergic rhinitis in BALB/C male mice based on NF-KB signaling pathway, thirty BALB/C male mice are randomly divided into three groups: control group, ovalbumin induced allergic rhinitis asthma group and zinc intervention group. The experimental results show that Zinc supplementation in allergic asthma mice with allergic rhinitis correct the immune response of TH2 cells by inhibiting THE NF-KB signaling pathway, reduce the infiltration of inflammatory cells into lung nasal tissue, and reduce airway co-hyperreactivity to improve the clinical symptoms of asthma and play an immune protective role.


Assuntos
Asma , Rinite Alérgica , Animais , Asma/induzido quimicamente , Asma/tratamento farmacológico , Citocinas/metabolismo , Modelos Animais de Doenças , Masculino , Camundongos , Camundongos Endogâmicos BALB C , NF-kappa B/metabolismo , Ovalbumina , Rinite Alérgica/metabolismo , Transdução de Sinais , Zinco
7.
PLoS One ; 17(7): e0270677, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35802745

RESUMO

Lingonberry (Vaccinium vitis-idaea L.) extract contains various active ingredients with strong inhibitory effects on cancer cell growth. HepG2 cells were treated with various concentrations of lingonberry extract, cell inhibition rate was measured by CCK-8 assay, and apoptosis rate by annexin-propidium iodide double-staining assay. The cell cycle was analyzed by flow cytometry, and cell migration and invasion by transwell assay. Real-time reverse transcription-PCR and western blotting were employed to analyze the expression of C-X-C motif chemokine ligand 3 (CXCL3). Ki-67, TUNEL, and transwell assays were used to verify the relationship between CXCL3 expression and cell proliferation, apoptosis, migration, and invasion. The composition of lingonberry extract was: 37.58% cyanidin-3-O-glucoside, 10.96% kaempferol 3-O-arabinoside, 4.52% epicatechin, 4.35% chlorogenic acid, 3.83% catechinic acid, 1.54% isoquercitrin, 1.05% 4-hydroxycinnamon acid, 1.03% cyanidin chloride, 0.85% 2,3-dihydroxybenzoic acid, 0.55% quercetin, 0.36% D-(-)-quininic acid, 0.96% caffeic acid, 0.16% ferulic acid, 0.12% oleanolic acid, and 0.03% ursolic acid. Lingonberry extract inhibited the proliferation of HepG2 cells in a dose-dependent manner. After 48 h exposure to 100 µg/mL extract the inhibition rate and IC50 were 80.89±6.05% and 22.62 µg/mL, respectively. Lingonberry extract promoted late apoptosis in HepG2 cells and arrested the cell cycle at G2/M and S phases. Lingonberry extract also promoted the apoptosis of HepG2 cancer cells, inhibiting their proliferation, migration, and invasion by regulating the expression of CXCL3. This study offers new insight into the antihepatoma activity of lingonberry extract and provides a basis for the development of pilot antitumor drugs.


Assuntos
Vaccinium vitis-Idaea , Apoptose , Movimento Celular , Proliferação de Células , Células Hep G2 , Humanos , Extratos Vegetais/farmacologia
8.
Artigo em Inglês | MEDLINE | ID: mdl-35341150

RESUMO

Introduction: The objective of our study is to explore the potential active ingredients and activity of Ginseng and Astragalus decoction (GAD) in the treatment of malignant pleural effusion (MPE) by using network pharmacology and molecular docking technologies. Methods: The active ingredients and corresponding targets of Ginseng and Astragalus were extracted from the Traditional Chinese Medicine System Pharmacology Database and Analysis Platform. The relevant targets of malignant pleural effusion (MPE) were searched in the disease databases. Overlapping targets of Ginseng and Astragalus and the corresponding targets of MPE were obtained to define the effective target of GAD for the treatment of MPE. The STRING database was applied to construct a predicted protein-protein interaction network for intersected targets. The Cytoscape software was used to screen key targets with a therapeutic potential. Using the Metascape database, we performed Gene Ontology and Kyoto Encyclopedia of Genes and Genomes functional enrichment analysis on the targets identified in the study. PyMOL and AutoDock Vina were used to molecularly dock the selected key components to their respective key targets for MPE treatment. Results: The core target network revealed 22 main active ingredients, 26 main targets, and 16 signaling pathways in GAD. Molecular docking revealed 6 targets (AKT serine/threonine kinase 1, intercellular adhesion molecule, Jun proto-oncogene, peroxisome proliferator activated receptor gamma, prostaglandin-endoperoxide synthase 2, and tumor necrosis factor) that could partially dock with kaempferol, frutinone A, ginsenoside RH2, formononetin, and quercetin. Conclusions: Several components, targets, and signaling pathways of GAD contribute to the treatment of MPE, which suggests a rationale for further investigation on GAD's active molecule and mechanism of action in the clinical application of MPE.

9.
Environ Sci Pollut Res Int ; 29(15): 22602-22612, 2022 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-34792767

RESUMO

The extensive use of copper fungicides has resulted in significant non-target effects on soil microbial communities. However, the documented effects are often variable and contradictory, depending on the methods used to assess them. In this study, we examined the effects of copper accumulation in surface soils on microbial catabolic activity, active biomass and composition, and sensitive bacterial species. The community-level catabolic profiles (CLCPs) showed that both normal (50 mg CuSO4 kg-1 soil) and high dosages (tenfold rate) of CuSO4 significantly increased the catabolic diversity of gram-positive bacteria, while the high dosage increased the overall catabolic activity of gram-negative bacteria. The phospholipid fatty acid (PLFA) analysis showed that the high dosage reduced the biomass of gram-positive bacteria by 27% but did not affect that of gram-negative bacteria. In comparison, the normal and high dosages decreased the fungal biomass by 34% and 58%, respectively. Furthermore, 16S rRNA-denaturing gradient gel electrophoresis (DGGE) fingerprint revealed that more than two-thirds of identified bands belonged to gram-negative bacteria. Some Cu-resistant gram-negative bacterial genera, such as Actinobacterium, Pseudomonas, and Proteobacterium, were detected in the soil to which the high dosage of CuSO4 had been applied. In conclusion, an excess application of CuSO4 increased the catabolic diversity of gram-positive bacteria and induced resistance in gram-negative bacteria, whereas the active fungal community displayed a dosage-dependent response to CuSO4 and can thus be used as a sensitive indicator of copper contamination.


Assuntos
Micobioma , Poluentes do Solo , Cobre/análise , Ácidos Graxos/análise , Bactérias Gram-Negativas , Bactérias Gram-Positivas/metabolismo , RNA Ribossômico 16S , Solo , Microbiologia do Solo , Poluentes do Solo/análise
10.
Front Pharmacol ; 12: 700498, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34220524

RESUMO

Combination therapy using Western and traditional Chinese medicines has shown notable effects on coronavirus disease 2019 (COVID-19). The He-Jie-Shen-Shi decoction (HJSS), composed of Bupleurum chinense DC., Scutellaria baicalensis Georgi, Pinellia ternata (Thunb.) Makino, Glycyrrhiza uralensis Fisch. ex DC., and nine other herbs, has been used to treat severe COVID-19 in clinical practice. The aim of this study was to compare the clinical efficacies of HJSS combination therapy and Western monotherapy against severe COVID-19 and to study the potential action mechanism of HJSS. From February 2020 to March 2020, 81 patients with severe COVID-19 in Wuhan Tongji Hospital were selected for retrospective cohort study. Network pharmacology was conducted to predict the possible mechanism of HJSS on COVID-19-related acute respiratory distress syndrome (ARDS). Targets of active components in HJSS were screened using the Traditional Chinese Medicine Systems Pharmacology (TCMSP) and PharmMapper databases. The targets of COVID-19 and ARDS were obtained from GeneCards and Online Mendelian Inheritance in Man databases. The key targets of HJSS in COVID-19 and ARDS were obtained based on the protein-protein interaction network (PPI). Kyoto Encyclopedia of Genes and Genomes analysis (KEGG) was conducted to predict the pathways related to the targets of HJSS in COVID-19 and ARDS. A "herb-ingredient-target-pathway" network was established using Cytoscape 3.2.7. Results showed that the duration of the negative conversion time of nucleic acid was shorter in patients who received HJSS combination therapy. HJSS combination therapy also relieved fever in patients with severe COVID-19. Network pharmacology analysis identified interleukin (IL) 6, tumor necrosis factor (TNF), vascular endothelial growth factor A (VEGFA), catalase (CAT), mitogen-activated protein kinase (MAPK) 1, tumor protein p53 (TP53), CC-chemokine ligand (CCL2), MAPK3, prostaglandin-endoperoxide synthase 2 (PTGS2), and IL1B as the key targets of HJSS in COVID-19-related ARDS. KEGG analysis suggested that HJSS improved COVID-19-related ARDS by regulating hypoxia-inducible factor (HIF)-1, NOD-like receptor, TNF, T cell receptor, sphingolipid, PI3K-Akt, toll-like receptor, VEGF, FoxO, and MAPK signaling pathways. In conclusion, HJSS can be used as an adjuvant therapy on severe COVID-19. The therapeutic mechanisms may be involved in inhibiting viral replication, inflammatory response, and oxidative stress and alleviating lung injury. Further studies are required to confirm its clinical efficacies and action mechanisms.

11.
Sci Rep ; 10(1): 5718, 2020 03 31.
Artigo em Inglês | MEDLINE | ID: mdl-32235914

RESUMO

Although inflammation is a host defense mechanism, chronic inflammation mediates several diseases, including cancer, allergy, asthma, and autoimmune diseases, and reportedly, it is associated with a 60% mortality rate. There are several reports on the anti-inflammatory effects of Curcuma longa and Allium hookeri. However, although they can be used as culinary materials and have biological effects, they are not effective anti-inflammatory agents. In this study, we evaluated the synergic effect of C. longa and A. hookeri in order to confirm the possibility of a new anti-inflammatory agent. Based on cell viability and cytokine analyses, the appropriate ratio of C. longa and A. hookeri was confirmed using an air pouch animal model. Then, the anti-inflammatory effect of C. longa and A. hookeri co-treatment was evaluated by measuring the immune cell count and cytokines in the exudate and by comparing the morphological changes and cytokines in inflamed skin samples. Additionally, we evaluated the NF-κB/COX-2 pathway and iNOS levels. The active constituents detected in C. longa were demethoxycurcumin and bisdemethoxycurcumin, and that detected in A. hookeri was methylsulfonylmethane. An in vitro assessment determined the appropriate drug ratio as 3:7. In a carrageenan-induced inflammatory model, co-treatment effectively suppressed inflammatory cytokines, including IFN-γ, IL-1ß, IL-6, IL-13, and IL-17, and recovered inflammation-related morphological changes in the skin. The anti-inflammatory effect of the co-treatment was mediated through the NF-κB/COX-2 pathway and iNOS inhibition. We concluded that co-treatment with C. longa and A. hookeri synergistically inhibited inflammation via the NF-κB/COX-2/iNOS pathway.


Assuntos
Anti-Inflamatórios/farmacologia , Curcuma , Ciclo-Oxigenase 2/metabolismo , Mediadores da Inflamação/metabolismo , Inflamação/metabolismo , NF-kappa B/metabolismo , Extratos Vegetais/farmacologia , Allium , Animais , Proliferação de Células/efeitos dos fármacos , Masculino , Camundongos , Camundongos Endogâmicos ICR , Células RAW 264.7 , Pele/efeitos dos fármacos , Pele/metabolismo
12.
Ying Yong Sheng Tai Xue Bao ; 31(8): 2749-2758, 2020 Aug.
Artigo em Chinês | MEDLINE | ID: mdl-34494798

RESUMO

We investigated the effects of tea plantation age on soil microbial community structure and diversity with surface and subsurface soil samples (0-20 and 20-40 cm) from tea plantation at different ages (0, 20, 25, 38 and 48 years). We analyzed soil bacterial and fungal communities by terminal restriction fragment length polymorphism (T-RFLP) and real-time quantitative PCR techniques. The results showed that soil physicochemical properties changed significantly after planting tea. The contents of soil organic carbon, available nitrogen, and available phosphorus increased at first, and gradually decreased with the increases of tea plantation age. The contents of organic carbon and total nitrogen in the topsoil were significantly higher than those in the subsoil. Moreover, soil bacterial community composition varied across tea plantation age. Bacterial diversity index decreased with increasing tea plantation age. The composition and diversity of soil fungal communities did not show a clear relationship with the tea plantation age. Overall, soil bacterial communities was more sensitive to the tea plantation age than fungal communities. With the increases of tea plantation age, the ratio of soil fungi to bacteria showed increasing trend. Soil microbial community in the tea plantation changed from a "bacterial type" with low fungi/bacteria ratio (F/B) to a "fungal type" with high F/B.


Assuntos
Microbiota , Solo , Carbono/análise , Nitrogênio/análise , Microbiologia do Solo , Chá
13.
Environ Sci Pollut Res Int ; 25(15): 14762-14772, 2018 May.
Artigo em Inglês | MEDLINE | ID: mdl-29541980

RESUMO

Glyphosate is a non-selective organophosphate herbicide that is widely used in agriculture, but its effects on soil microbial communities are highly variable and often contradictory, especially for high dose applications. We applied glyphosate at two rates: the recommended rate of 50 mg active ingredient kg-1 soil and 10-fold this rate to simulate multiple glyphosate applications during a growing season. After 6 months, we investigated the effects on the composition of soil microbial community, the catabolic activity and the genetic diversity of the bacterial community using phospholipid fatty acids (PLFAs), community level catabolic profiles (CLCPs), and 16S rRNA denaturing gradient gel electrophoresis (DGGE). Microbial biomass carbon (Cmic) was reduced by 45%, and the numbers of the cultivable bacteria and fungi were decreased by 84 and 63%, respectively, under the higher glyphosate application rate. According to the PLFA analysis, the fungal biomass was reduced by 29% under both application rates. However, the CLCPs showed that the catabolic activity of the gram-negative (G-) bacterial community was significantly increased under the high glyphosate application rate. Furthermore, the DGGE analysis indicated that the bacterial community in the soil that had received the high glyphosate application rate was dominated by G- bacteria. Real-time PCR results suggested that copies of the glyphosate tolerance gene (EPSPS) increased significantly in the treatment with the high glyphosate application rate. Our results indicated that fungi were impaired through glyphosate while G- bacteria played an important role in the tolerance of microbiota to glyphosate applications.


Assuntos
Bactérias/efeitos dos fármacos , Glicina/análogos & derivados , Bactérias Gram-Negativas/efeitos dos fármacos , Herbicidas/farmacologia , Micobioma/efeitos dos fármacos , Organofosfatos/farmacologia , Microbiologia do Solo , Agricultura , Bactérias/metabolismo , Biomassa , Carbono/metabolismo , Ácidos Graxos/análise , Glicina/farmacologia , Bactérias Gram-Negativas/genética , Fosfolipídeos/metabolismo , RNA Ribossômico 16S/genética , Solo/química , Poluentes do Solo/farmacologia , Glifosato
17.
Artigo em Chinês | MEDLINE | ID: mdl-23373273

RESUMO

OBJECTIVE: To evaluate the effects and influencing factors of mass chemotherapy in the late stage of soil-borne nematodiasis control so as to provide the evidence for the development of control programs. METHODS: Six villages were divided into three groups: the target chemotherapy, the selective chemotherapy and the control. By observation in three consecutive years, the indexes, mass infection rates, infection degrees and re-infections of soil-borne nematodes, were compared among the 3 groups. The influencing factors were also analyzed. RESULTS: The population infection rates of soil- borne nematodes decreased by 85.94%, 43.10% and 20.87%, respectively, in the three groups after chemotherapy compared with those before the intervention. A higher hookworm infection rate appeared and the chemotherapy effect was impacted in the target chemotherapy group, as some key population applied fresh human waste in vegetable plots. The re-infection rate was 16.65 times of the new infection rate. CONCLUSIONS: Chemotherapy is still useful in the late stage of soil-borne nematode control. It is more important to enhance management of using manure and health education on focus population.


Assuntos
Antinematódeos/uso terapêutico , Infecções por Nematoides/tratamento farmacológico , Solo/parasitologia , Adolescente , Adulto , Animais , Criança , Pré-Escolar , China/epidemiologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Nematoides/efeitos dos fármacos , Nematoides/fisiologia , Infecções por Nematoides/epidemiologia , Infecções por Nematoides/parasitologia , Adulto Jovem
18.
Oncol Rep ; 26(4): 833-41, 2011 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-21725607

RESUMO

The nuclear factor κB (NF-κB)/inhibitor of κ kinase-ß (IKKß) signaling pathway is important in tumor promotion and progression. MDA-MB-231 human breast carcinoma cells express COX-2 and show a constitutive phosphorylation of NF-κB. Many non-specific inhibitors of IKKß and NF-κB are used to inhibit tumor promotion and progression. The Stephania delavayi Diels. (S. delavayi Diels.) extract has been reported to safely activate B cell immunity and there is evidence suggesting that it may be a promising new anticancer therapeutic agent. S. delavayi Diels. extract suppressed proliferation of the breast cancer cell lines MDA-MB-231 and MCF-7 by inducing cell death. To aid in the development of the S. delavayi Diels. extract as a therapeutic agent, its mechanisms of action were investigated, in particular its effects on p38 MAPK, NF-κB and COX-2, which play important roles in inflammation and cancer. S. delavayi Diels. stimulated p38 MAPK phosphorylation but reduced NF-κB phosphorylation and COX-2 expression in a dose- and time-dependent manner. Thus, S. delavayi Diels., which appears to act primarily through p38 MAPK/NF-κB/COX-2 signaling in breast carcinomas, may be a potent anticancer agent with target specificity and low toxicity.


Assuntos
Neoplasias da Mama/tratamento farmacológico , Ciclo-Oxigenase 2/metabolismo , Gleiquênias/química , NF-kappa B/metabolismo , Extratos Vegetais/farmacologia , Proteínas Quinases p38 Ativadas por Mitógeno/metabolismo , Animais , Neoplasias da Mama/metabolismo , Neoplasias da Mama/patologia , Processos de Crescimento Celular/efeitos dos fármacos , Linhagem Celular Tumoral , Ciclo-Oxigenase 2/biossíntese , Feminino , Humanos , Camundongos , Camundongos Nus , Fosforilação , Transdução de Sinais/efeitos dos fármacos , Ensaios Antitumorais Modelo de Xenoenxerto , Proteínas Quinases p38 Ativadas por Mitógeno/farmacologia
19.
Zhongguo Zhen Jiu ; 30(10): 865-9, 2010 Oct.
Artigo em Chinês | MEDLINE | ID: mdl-21058489

RESUMO

The purpose of this study is to summarize teaching experiences on channel and acupoints. The method of classified teaching is put forward and approached to explore the law of acupoint teaching. It is held that the method could reduce randomness and enhance appropriateness, rationality and scientific validity of the teaching. Class hours are thus optimized and the best teaching result achieved. Acupoints are classified into 4 categories of core points, focal points, regular points and ordinary points according to their use frequency and theoretical importance. Classification methods, principles and categories are then determined. And content of courses, teaching techniques and requirements are introduced as well. Suggestions are offered on enriching teaching contents, for instance, paraphrasing of the acupoint names, indications, point prescriptions and clinical experiences. Thus the conclusion is made that it is imperative to reform the conventional sort of acupoints classified by only focal points and ordinary points as well as the related teaching methods.


Assuntos
Pontos de Acupuntura , Acupuntura/educação , Acupuntura/normas , Ciclobutanos , Ensino/normas , Humanos
20.
Zhongguo Zhen Jiu ; 29(8): 670-4, 2009 Aug.
Artigo em Chinês | MEDLINE | ID: mdl-19947277

RESUMO

In the present paper, the theory and practice of acupuncture and moxibustion therapy by a clinical point of view are explored and summarized. Such concepts as the total treatment amount, the unit treatment amount, the immediate treatment amount, the overtreatment amount, the inferior treatment amount and the measurement of treatment amount are proposed and discussed. The basic constituent elements of treatment amount of acupuncture and moxibustion, i. e. acupuncture, moxibustion, cupping, acupoint injection, electroacupuncture are summarized. It is held that the treatment amount of acupuncture and moxibustion in condition of suitable controlling is the fundamental guarantee for the best clinical therapeutic effect, the key to which include correct acupuncture manipulation, rational selection acupoints for the prescriptions, suitable acupuncture therapy combination, the variety of treatment amount assignment being related with the state of disease and so on. The overtreatment amount and the inferior treatment amount must be avoided.


Assuntos
Terapia por Acupuntura , Moxibustão , Pontos de Acupuntura , Humanos
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