Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 23
Filtrar
1.
Sensors (Basel) ; 23(15)2023 Jul 25.
Artículo en Inglés | MEDLINE | ID: mdl-37571438

RESUMEN

In real world industrial applications, the working environment of a bearing varies with time, and some unexpected vibration noises from other equipment are inevitable. In order to improve the anti-noise performance of neural networks, a new prediction model and a multi-channel sample generation method are proposed to address the above problem. First, we proposed a multi-channel sample representation method based on the envelope time-frequency spectrum of a different channel and subsequent three-dimensional filtering to extract the fault features of samples. Second, we proposed a multi-channel data fusion neural network (MCFNN) for bearing fault discrimination, where the dropout technique is used in the training process based on a dataset with a wide rotation speed and various loads. In a noise-free environment, our experimental results demonstrated that the proposed method can reach a higher fault classification of 99.00%. In a noisy environment, the experimental results show that for the signal-to-noise ratio (SNR) of 0 dB, the fault classification averaged 11.80% higher than other methods and 32.89% higher under a SNR of -4 dB.

2.
Zhongguo Ying Yong Sheng Li Xue Za Zhi ; 38(4): 308-312, 2022 Jul.
Artículo en Chino | MEDLINE | ID: mdl-36414552

RESUMEN

Objective: To investigate the anti-fatigue effects of composition of Moringa oleifera leaves and Polygonatum polysaccharide, and to explore the mechanisms. Methods: Thirty male Kunming mice were randomly divided into control (C) and composition of Moringa oleifera leaves and Polygonatum polysaccharide group (MP). There were 15 mice in each group. Group C was given distilled water and the group MP was given composition intragastriclly every day. The volume was 0.5 ml. After 14 days of treatment, weight-bearing swimming experiment was conducted, and exhaustive swimming time was recorded. The bearing weight was 3% of the body weight. In another experiment, 48 male Kunming mice were randomly divided into quiet control group (QC), swimming control group (SC) and composition group (MP). There were 16 mice in each group. The QC and SC groups were given distilled water intragastrically, and the group MP was treated with composition every day for 14 days. The volume was 0.5 ml. On the day 15, 30 minutes after intragastriclly administration of distilled water, blood, liver and hind leg muscle of the QC group were collected immediately. The SC and MP groups were subjected non-weight-bearing swimming experiment, and blood, liver and hind leg muscle were collected after swimming. The fatigue related indexes, oxidant/antioxidant parameters and energy metabolism indicators in serum and tissues were determined by commercial kits. Results: The exhaustive swimming time of mice in MP group was significantly longer than that in the C group (P<0.05). Compared with the control group, non-weight-bearing swimming decreased the contents of serum glucose and GSH, the contents of hepatic glycogen and ATP, the hepatic activities of SOD, LDH and ATPase, and muscle activity of GSH-Px (P< 0.05). However, serum levels of BUN and MDA were increased (P<0.05). Compared with the SC group, the composition remarkably increased the contents of serum glucose and hepatic glycogen, increased serum content of GSH, enhanced hepatic activities of SOD, LDH and ATPase and muscle activity of GSH-Px, and increased the hepatic content of ATP (P<0.05). However, the serum level of BUN was decreased (P<0.05). Conclusion: The Moringa oleifera leaves and Polygonatum polysaccharide composition possesses anti-fatigue effects. Anti-oxidant and improving energy metabolism could be the important mechanisms.


Asunto(s)
Moringa oleifera , Polygonatum , Masculino , Ratones , Animales , Moringa oleifera/metabolismo , Polygonatum/metabolismo , Glucógeno Hepático , Polisacáridos/farmacología , Antioxidantes , Superóxido Dismutasa/metabolismo , Adenosina Trifosfatasas , Glucosa , Agua , Adenosina Trifosfato
3.
Front Bioeng Biotechnol ; 9: 673402, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34041232

RESUMEN

Cyanobacteria can acclimate to changing copper and iron concentrations in the environment via metal homeostasis, but a general mechanism for interpreting their dynamic relationships is sparse. In this study, we assessed growth and chlorophyll fluorescence of Synechocystis sp. PCC 6803 and investigated proteomic responses to copper and iron deductions. Results showed that copper and iron exerted reciprocal effect on the growth and photosynthesis of Synechocystis sp. PCC 6803 at combinations of different concentrations. And some proteins involved in the uptake of copper and iron and the photosynthetic electron transport system exhibit Cu-Fe proteomic association. The protein abundance under copper and iron deduction affected the photosynthetic electronic activity of Synechocystis sp. PCC 6803 and eventually affected the growth and photosynthesis. Based on these results, we hypothesize that the Cu-Fe proteomic association of Synechocystis sp. PCC 6803 can be elucidated via the uptake system of outer membrane-periplasmic space-inner plasma membrane-thylakoid membrane, and this association is mainly required to maintain electron transfer. This study provides a broader view regarding the proteomic association between Cu and Fe in cyanobacteria, which will shed light on the role of these two metal elements in cyanobacterial energy metabolism and biomass accumulation.

4.
Ying Yong Sheng Tai Xue Bao ; 29(10): 3398-3406, 2018 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-30325166

RESUMEN

In agroecosystem, arbuscular mycorrhizal fungi have mutually beneficial symbiosis with roots of many crops. Meanwhile, this special fungal community is also affected by agricultural mana-gements such as fertilization. The objective of this study was to investigate the effects of long-term fertilization managements (no fertilizer, chemical fertilizer, chemical fertilizer combined with straw, chemical fertilizer combined with manure) on arbuscular mycorrhizal fungal community (AM fungal community) in lime concretion black soil, and to identify the indicator species in each fertilization regime. The most dominant arbuscular mycorrhizal fungal phyla in lime concretion black soil were Archaeosporaceae, Diversisporaceae, Gigasporaceae, Claroideoglomeraceae, Glomeraceae and Paraglomeraceae. The genus Paraglomus was strongly and significantly associated with the application of chemical fertilizer and organic fertilizer. Compared with the control, long-term application of chemical fertilizer greatly changed AM fungal community structure and resulted in the decrease of AM fungal diversity, and the addition of wheat straw further decreased the diversity, while the addition of manure could alleviate diversity loss resulted from chemical fertilization. Soil pH and dissolved organic carbon (DOC) were the main factors affecting the changes of AM fungal community. In summary, long-term application of chemical fertilizer combined with different organic materials had different impacts on soil AM fungal community structure and diversity. The combination of chemical fertilizer and manure would be more conducive to the maintenance of AM fungal diversity.


Asunto(s)
Micorrizas , Agricultura , Compuestos de Calcio , Productos Agrícolas , Fertilizantes , Glomeromycota , Estiércol , Óxidos , Raíces de Plantas , Suelo , Microbiología del Suelo , Simbiosis , Triticum
5.
Zhongguo Zhong Yao Za Zhi ; 43(16): 3404-3411, 2018 Aug.
Artículo en Chino | MEDLINE | ID: mdl-30200748

RESUMEN

"Bangjian" were traditional Tibetan medicine-flowers from Gentianaceae, which were widely used and had a long medicinal history for the function of detoxifying, curing heat symptoms and treating the laryngitis. The Tibetan compound preparation endowed SFDA approval number always used Bangjian aas the main raw materials for relieving cough, asthma and treating respiratory diseases such as acute and chronic bronchitis. Its commodity medicinal materials were also sold in Qinghai, Sichuan, Tibet and other local medicinal materials market and local specialty marke. However, when recorded by literatures of Tibetan medicine, Bangjian were often classified into white, blue and black or white, blue and variegated according to color of flowers, leading to disordered varieties. In this paper, different Bangjian including their original plants and the main application varieties were studied and authenticated by textual research, wild specimen collection, investigation and collection of samples from Tibetan hospitals,Tibetan pharmaceutical factories and medical material markets. Results showed that Bangjian-including blue, black and variegated flowers were originated from 14 species and 3 varietas according to literatures, and the main application varieties mainly come from Ser. Ornatae of Sect. Monopodiae, such as Gentiana veitchiorum for the most, G. sino-ornata as well as G. lawrencei var. farreri. Suggestion about establishing the quality standard of Bangjian was gived, which provided reference in reasonable use and scientific research for Bangjian, and also had practical value for its clinical use and development.


Asunto(s)
Flores , Medicina Tradicional Tibetana , Plantas Medicinales , Gentianaceae , Preparaciones de Plantas , Tibet
6.
Zhongguo Zhong Yao Za Zhi ; 42(9): 1659-1667, 2017 May.
Artículo en Chino | MEDLINE | ID: mdl-29082686

RESUMEN

This paper collected and analyzed literatures about starting of traditional medicine and trading of different medicine from Chunqiu Zhanguo to Ming and Qing Dynasties, in order to preliminarily explore on an overview of specie of chinese exotic traditional medicine and trade of different country in different dynasty(from Chunqiu to Ming and Qing Dynasties), as well as the amount of exotic medicine over two thousand years. (remove repeating and doubtful species), find peculiarity of exotic medicine, sreen species that used to develop the Silk Route and establish quality standards.Finally, We get conclusions are as follows. First, primary,.prosperous and declining stages of development of exotic traditional medicine are Qin and Han, Song-Jin-Yuan, Ming and Qing Dynasties, respectively. Second, according to literature, the stage that has the most species of exotic medicine is song dynasty,approximately have 300. Removing repeating and doubtful species, the believable species are approximate 230 to 250. Meanwhile, the unknown species are approximate 30, which may be different name of one medicine or processed goods, now these medicines are named as "doubtful species". Third, the medicinal parts of exotic medicine are different from Chinese medicine of Han nation. The number of Resin, fruits and seeds kind are more than root and rhizomes kind,mineral medicines are more than animal. Fourth, the major producing area of exotic medicine is some countries and territories related to the Silk Route in the history. Ultimately, this paper preliminarily figure out basic information of exotic medicine of different dynasty in China,that provide reference for learning study and decision of industrial development.


Asunto(s)
Medicamentos Herbarios Chinos/historia , Materia Medica/historia , Medicina Tradicional China/historia , Plantas Medicinales/clasificación , China , Historia Antigua
7.
Zhongguo Yi Xue Ke Xue Yuan Xue Bao ; 38(2): 192-7, 2016 Apr.
Artículo en Chino | MEDLINE | ID: mdl-27181897

RESUMEN

OBJECTIVE: To explore the association of insulin resistance and ß cell function with lipid metabolism in middle-aged and elderly Hui and Han populations. METHODS: A total of 1000 subjects age over 40 years were recruited from five urban communities in Yinchuan and Wuzhong cities of Ningxia. The composition ratio between Hui and Han nationality was 1:2. A questionnaire-based survey was performed. Physical examinations were carried out to measure the height, body mass, waistline, and hipline. The levels of triglyceride (TG), total cholesterol (TC), blood uric acid (BUA), fasting blood glucose and insulin were measured. The boby mass index (BMI), waist-hip ratio (WHR), and secretion related index including insulin resistance index (IR), insulin sensitivity index (IAI), and beta cell function index (HBCI) were calculated. RESULTS: The BMI, WHR, IAI, HBCI, and the prevalence rate of diabetes in Hui nationality were significantly higher than those in Han nationality (P<0.01). The levels of BUA, fasting blood glucose, TC, and IR in Han nationality were significantly lower than those in Hui nationality (P<0.01). In Hui populations, TG, BMI, WHR, and BUA were positively correlated with IR (r=0.234, r=0.193, r=0.143, and r=0.129, respectively; P<0.01) and were negatively correlated with IAI (r=-0.234, r=-0.193, r=-0.143, r=-0.129, respectively; P<0.01), whereas TC was negatively correlated with HBCI (r=-0.169, P<0.01). In Han populations, TC, TG, BMI, WHR, and BUA were positively correlated with IR (r=0.140, r=0.257, r=0.288, r=0.163, r=0.104, P<0.01) and negatively correlated with IAI (r=-0.140, r=-0.257, r=-0.288, r=-0.163, and r=-0.104, P<0.01), whereas BMI was negatively correlated with HBCI (r=-0.111, P<0.01). After the influential factors such as gender, nationality, and age were adjusted, the TC, TG, BMI, WHR, BUA levels were positively correlated with IR (r=0.109, r=0.256, r=0.253, r=0.139, and r=0.142, P<0.01) and negatively correlated with IAI (r=-0.109, r=-0.256, r=-0.253, r=-0.139, and r=-0.142, P<0.01). TC and BMI were negatively correlated with HBCI (r=-0.113, r=-0.086, P<0.01). TG and BMI were independently associated with IR and IAI (r=0.218, r=0.182, r=-0.218, r=-0.182), while TC and BMI were independently associated with HBCI (r=-0.113, r=-0.086). CONCLUSIONS: The distributions of TC, TG, BMI, WHR, BUA, IR, IAI, and HBCI differ between Han and Hui populations. The development of insulin resistance is closely related with the increased levels of TC, TG, BMI, WHR, and BUA. However, the HBCI increases with the increased level of TC and BMI. TG and BMI may be related with insulin resistance. Also, TC and BMI may affect the secretion function of ß cells.


Asunto(s)
Resistencia a la Insulina , Células Secretoras de Insulina/citología , Metabolismo de los Lípidos , Anciano , Pueblo Asiatico , Glucemia/análisis , Índice de Masa Corporal , Colesterol/sangre , Etnicidad , Humanos , Insulina/sangre , Persona de Mediana Edad , Triglicéridos/sangre , Ácido Úrico/sangre
8.
Zhongguo Zhong Yao Za Zhi ; 41(5): 793-801, 2016 Mar.
Artículo en Chino | MEDLINE | ID: mdl-28875629

RESUMEN

This paper aims to explore a comprehensive assessment method combined traditional Chinese medicinal material specifications with quantitative quality indicators. Seventy-six samples of Notopterygii Rhizoma et Radix were collected on market and at producing areas. Traditional commercial specifications were described and assigned, and 10 chemical components and volatile oils were determined for each sample. Cluster analysis, Fisher discriminant analysis and correspondence analysis were used to establish the relationship between the traditional qualitative commercial specifications and quantitative chemical indices for comprehensive evaluating quality of medicinal materials, and quantitative classification of commercial grade and quality grade. A herb quality index (HQI) including traditional commercial specifications and chemical components for quantitative grade classification were established, and corresponding discriminant function were figured out for precise determination of quality grade and sub-grade of Notopterygii Rhizoma et Radix. The result showed that notopterol, isoimperatorin and volatile oil were the major components for determination of chemical quality, and their dividing values were specified for every grade and sub-grade of the commercial materials of Notopterygii Rhizoma et Radix. According to the result, essential relationship between traditional medicinal indicators, qualitative commercial specifications, and quantitative chemical composition indicators can be examined by K-mean cluster, Fisher discriminant analysis and correspondence analysis, which provide a new method for comprehensive quantitative evaluation of traditional Chinese medicine quality integrated traditional commodity specifications and quantitative modern chemical index.


Asunto(s)
Apiaceae/química , Medicamentos Herbarios Chinos/análisis , Apiaceae/clasificación , China , Cromatografía Líquida de Alta Presión , Medicamentos Herbarios Chinos/economía , Furocumarinas/análisis , Furocumarinas/economía , Medicina Tradicional China/economía , Rizoma/química , Rizoma/clasificación
9.
Zhongguo Zhong Yao Za Zhi ; 41(24): 4663-4669, 2016 Dec.
Artículo en Chino | MEDLINE | ID: mdl-28936853

RESUMEN

In this article the classics textual research to the origin of "Zha-xun" was carried out, the ethnobotanical research methods, the origin of visits, key informant interviews, sample collection and textual research were applied in the research. The results showed that the hypothesis of Zha-xun"s origin mainly included "source of mine", "source of feces", "source of monkey menstrual blood" in China. There were "source of fossil", "source of the plant secretion" abroad. The authors had interviewed the villagers at origin, herbalists, Tibetan doctors, herb dealers, foreign scholars for a total of 18 people, and collecting 45 batches medicinal materials. According to ancient Tibetan classics textual and Tibetan medicine doctors' views, medicinal materials were divided into the genuine and the substitutes. The genuine was identified as ancient so-called "iron" type "Zha-xun", and the substitute was fecal pellet bonding briquette. According to the field survey and literature research, "source of fossil" more in line with substance of Zha-xun was derived from the rock. As the results, the author believed that Zha-xun was the mixture of organic fossils from the rock seepage with flying squirrel, pika feces. So it is needed to be set up Zha-xun classification standard to evaluate the quality of medicinal materials. Meanwhile, it was necessary to further clarify fecal pellet substitute rationality. Above all, this article clarified the status of the use of Tibetan medicine-"Zha-xun", and laid the foundation of species systematics and quality standards research of "Zha-xun".


Asunto(s)
Medicina Tradicional Tibetana , China , Humanos , Plantas Medicinales
10.
Zhong Yao Cai ; 38(2): 279-83, 2015 Feb.
Artículo en Chino | MEDLINE | ID: mdl-26415401

RESUMEN

OBJECTIVE: To study the material composition of Tibetan medicine "Brag-zhun", and to provide the basis for interpretation of its source and reference for the establishment of quality standards. METHODS: Pharmacognosy routine method was used in macroscopic and microscopic identifications, inductively coupled plasma spectrometry was carried out to determine 26 kinds of mineral elements,and X-ray diffraction analysis was used for the crystalline phase detection of Brag-zhun. The content of calcium,organic matter, humic acid and fulvic acid was determined according to GB/T 14610-2008, "technical specification for soil analysis" , GB/T 11957-2001 and capacity titration, respectively. Moisture, ash content, acid insoluble ash content and water soluble extract were determined with reference to the Chinese Pharmacopoeia (2010 edition). RESULTS: Animal feces were commonly found in Brag-zhun, the main crystal phase was SiO2, 26 kinds of mineral elements content in total was about 3%, 13 batches of medicinal materials in organic matter content was 29.03%-71.79%. Humic acid content was 28.37%-58.51%; fulvic acid content was 19.69%-41.43%; moisture was 5.2% -11.7%; total ash content was 17.82%-64.39%; acid insoluble ash content was 2.10%-39.09%; and water soluble extract was 28.39%-57.40%. CONCLUSION: The traditional record of Brag-zhun from molten juice is lack of scientific basis. The mineral elements in Brag-zhun exist in amorphous. Brag-zhun contains a lot of organic matter including humic acid and fulvic acid, and inorganic matter mainly comes from sediment. The organic matter in rock has gone through a long geological evolution.


Asunto(s)
Sustancias Húmicas/análisis , Medicina Tradicional Tibetana , Dióxido de Silicio/análisis , Benzopiranos/análisis , Farmacognosia , Agua , Difracción de Rayos X
11.
J Sep Sci ; 38(3): 530-40, 2015 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-25402838

RESUMEN

A simple, specific, and sensitive ultra high performance liquid chromatography with tandem mass spectrometry method was developed and validated for the simultaneous quantification of nine compounds including a new compound, rhamnazin-3-Ο-ß-D-(6″-ß-hydroxy-ß-methyglutaryl)-ß-D-glucoside-4'-Ο-ß-D-glucoside, in rat plasma using baicalin as an internal standard. The plasma samples were pretreated and extracted by protein precipitation with 0.2% formic acid in acetonitrile. The analytes were separated on a Thermo Syncronis C18 column by gradient elution with a mobile phase consisting of acetonitrile and 0.1% aqueous formic acid at a flow rate of 0.25 mL/min. The detection of the analytes was performed on an electrospray ionization interface operating in positive-ion and multiple reaction monitoring acquisition modes. The calibration curves of these analytes showed good linearity (r > 0.99) within the test ranges. The lower limit of quantification ranged from 0.4 to 20.1 ng/mL for the analytes. The intra- and interday precision and accuracy were all within ±15%, and the recoveries were higher than 80.0%. The validated method was successfully applied to a pharmacokinetic study of the nine flavonoids after administration of the Viscum coloratum extracts by intravenous injection.


Asunto(s)
Flavonoides/sangre , Flavonoides/farmacocinética , Extractos Vegetales/química , Viscum/química , Animales , Cromatografía Líquida de Alta Presión , Flavonoides/administración & dosificación , Flavonoides/química , Inyecciones Intravenosas , Masculino , Estructura Molecular , Extractos Vegetales/administración & dosificación , Extractos Vegetales/sangre , Extractos Vegetales/farmacocinética , Ratas , Ratas Wistar , Espectrometría de Masas en Tándem
12.
Zhong Yao Cai ; 38(5): 957-61, 2015 May.
Artículo en Chino | MEDLINE | ID: mdl-26767288

RESUMEN

OBJECTIVE: To establish an HPLC fingerprint of Anisodus tanguticus root for its quality control. METHODS: The analysis was carried out on a Ultimate AQ C18 (250 mm x 4.6 mm, 5 µm) column with the gradient elution of acetonitrile and KH2PO4 buffer soution, whose pH was adjusted to 3.0 with phosphoric acid. The flow rate, column temperature, detection wavelength and injection volume was 1.0 mL/min, 30 degrees C, 210 nm and 10 µL separately. The similarity evaluation and principal component analysis were used to analyze HPLC fingerprint of Anisodus tanguticus root. RESULTS: HPLC fingerprint of Anisodus tanguticus root was established with 15 common peaks by determining 18 batches of Anisodus tanguticus root samples. Four characteristic peaks, anisodine, scopolamine, anisodamine and anisodamine, were confirmed by comparing their retention time and UV spectrum with standard reference substances. The simiarities of 18 batches of Anisodus tanguticus root were between -0.891 and 0.987. Comprehensive evaluation scores of 18 batches of Anisodus tanguticus root were between -0.85 and 0.89 by principal component analysis. CONCLUSION: The established HPLC fingerprint has good precision, repeatability and stability, which can provide more comprehensive information for identification and quality control of Anisodus tanguticus root.


Asunto(s)
Medicamentos Herbarios Chinos/química , Fitoquímicos/análisis , Raíces de Plantas/química , Solanaceae/química , Cromatografía Líquida de Alta Presión , Análisis de Componente Principal , Control de Calidad , Escopolamina , Derivados de Escopolamina , Alcaloides Solanáceos
13.
Zhongguo Zhong Yao Za Zhi ; 40(23): 4693-702, 2015 Dec.
Artículo en Chino | MEDLINE | ID: mdl-27141685

RESUMEN

As an indispensable part of minority traditional medicine, mineral medicine has used with less dosage and reliable efficacy for the last thousand years. Based on the unearthed relics and medical literatures of past dynasties, the history of Han nationality ap- years, which had been recorded in main literature. But there is less comprehensive report of its usage in the other 55-minority nationality. This article was based on the analysis of ethnic minority literature of thousands of years, and conducted a comprehensive collation and analysis of mineral medicine. It was mostly determined that there was 20 minority groups using mineral medicine, with a total of 163 species (limited our references), and the most used is the Tibetan, accounting for 141. The most serious problems of mineral medicine are that species should be further investigated and researched, and then become the legal commercial medicine, and the classification principles of mineral medicine should be established. Through the traditional processing and experimental studies, the problems of attenuation and detoxification should be solved.


Asunto(s)
Medicina Tradicional China , Minerales/análisis , China/etnología , Historia Antigua , Historia Medieval , Humanos , Medicina en la Literatura , Medicina Tradicional China/historia , Minerales/farmacología
14.
Zhongguo Zhong Yao Za Zhi ; 39(13): 2450-5, 2014 Jul.
Artículo en Chino | MEDLINE | ID: mdl-25276961

RESUMEN

OBJECTIVE: To clarity the original plants and the main application varieties of White Flos Gentianae. METHOD: Herbal textual research, wild specimen collection, investigation and collection of the samples from Tibetan hospital, Tibetan pharmaceutical factory and medical material market were carried out simultaneously to identify the original plants of White Flos Gentianae. RESULT: The results of varieties textual research and specimen identification showed that Gentiana szechenyii, G. purdomii and G. algida were in accord with the record of Tibetan herbal textual The three species above were the original plants of White Flos Gentianae. The identification of 20 batches samples showed that G. szechenyii was the main application variety. The other varieties were only used in Tibetan hospitals. All the samples above were flowering branches. CONCLUSION: It was necessary to strengthen the research on variety systematization of White Flos Gentianae make a further discussion on the taxonomy position of G. purdomii, G. algida and the white flos population. Its was also nessary to establish and improve the quality standard of different variety based on the principle of "one species, one name". The quality specification of White Flos Gentianae should be established and improved to standard clinical utilization and produce feeding. More study of resources investigation and cultivation of G. szechenyii should be carried on to meet the demand of produce and clinic.


Asunto(s)
Medicamentos Herbarios Chinos/uso terapéutico , Gentiana/química , Gentiana/clasificación , China , Quimioterapia , Medicamentos Herbarios Chinos/química , Flores/anatomía & histología , Flores/química , Flores/crecimiento & desarrollo , Gentiana/anatomía & histología , Gentiana/crecimiento & desarrollo , Historia Antigua , Humanos , Medicina en la Literatura , Medicina Tradicional Tibetana/historia , Plantas Medicinales/química , Plantas Medicinales/clasificación , Plantas Medicinales/crecimiento & desarrollo
15.
World J Emerg Med ; 4(2): 144-50, 2013.
Artículo en Inglés | MEDLINE | ID: mdl-25215109

RESUMEN

BACKGROUND: The plasma concentration of paraquat is closely related to the prognosis of patients with paraquat toxication, and the most common cause of death from paraquat poisoning is multiple organ failure (MOF). This study aimed to evaluate therapeutic effect of smecta on the plasma concentrations of paraquat and multi-organ injury induced by paraquat intoxication in rats. METHODS: A total of 76 healthy adult SD rats were randomly divided into group A (control group, n=6), group B (poisoned group, n=30) and group C (smecta-treated group, n=30). Rats in groups B and C were treated intragastrically with PQ at 50 mg/kg, and rats in group A was treated intragastrically with saline (1 mL). Rats in group C were given intragastrically smecta at 400 mg/kg 10 minutes after administration of PQ, while rats in other two groups were treated intragastrically with 1 mL saline at the same time. Live rats in groups B and C were sacrificed at 2, 6, 24, 48, 72 hours after administration of PQ for the determination of paraquat plasma concentrations and for HE staining of the lung, stomach and jejunum. The rats were executed at the end of trial by the same way in group A. RESULTS: The plasma concentration of paraquat (ng/mL) ranged from 440.314±49.776 to 4320.6150±413.947. Distinctive pathological changes were seen in the lung, stomach and jejunum in group B. Lung injuries deteriorated gradually, edema, leukocyte infiltration, pneumorrhagia, incrassated septa and lung consolidation were observed. Abruption of mucosa, hyperemic gastric mucosa and leukocyte infiltration were obvious in the stomach. The hemorrhage of jejunum mucosa, the abruption of villus, the gland damage with the addition of inflammatory cell infiltration were found. Compared to group B, the plasma concentration of paraquat reduced (P<0.01) and the pathological changes mentioned above were obviously alleviated in group C (P<0.05, P<0.01). CONCLUSION: Smecta reduced the plasma concentration of paraquat and alleviated pathologic injury of rats with PQ poisoning.

16.
Zhong Yao Cai ; 35(11): 1792-5, 2012 Nov.
Artículo en Chino | MEDLINE | ID: mdl-23627091

RESUMEN

OBJECTIVE: To study the chemical constituents of flower buds of Lonicera similes. METHODS: The chemical constituents were isolated and purified with macroporous resin, silica gel column chromatography, gel chromatography, ect. The structures were elucidated according to the references combined with the application of spectrum techniques such as 1H-NMR, 13C-NMR ect. RESULTS: Nine compounds were isolated and their structures were identified as 5-hydroxyl-7,4'-dimethoxyflavone (I), rutin (II), quercetin (III), amentoflavone (IV), aesculetin (V), beta-sitosterol (VI), 5-hydroxyl-7,3', 4'-trimethoxyflavone (VIII), oleanolic acid (VIII), beta-daucosterin (IX). CONCLUSION: Among the nine isolated compounds, compounds I, II, III, IV, V, are flavonoids. Compounds I , IV, V, VII, VIII, IX are isolated from this plant for the first time.


Asunto(s)
Flavonas/aislamiento & purificación , Flores/química , Lonicera/química , Umbeliferonas/aislamiento & purificación , Biflavonoides/química , Biflavonoides/aislamiento & purificación , Flavonas/química , Estructura Molecular , Umbeliferonas/química , beta Caroteno/química , beta Caroteno/aislamiento & purificación
17.
Zhong Yao Cai ; 34(4): 503-6, 2011 Apr.
Artículo en Chino | MEDLINE | ID: mdl-21809534

RESUMEN

OBJECTIVE: To study the effect of natural drought stress conditions on Angelica dahurica var. formnosana vegetative organs biomass accumulation and allocation in leaf growing season. To discuss the changing law of Angelica dahurica var. formosana vegetative organs biomass in different drought stress conditions. METHODS: Measured Angelica dahurica var. formnosana leaf and leafstalk's biomass, all aboveground biomass and the ratio of root biomass, leaf biomass, root/shoot ratio etc. in the growing season under the natural drought stress condition. RESULTS: Slight drought stress condition was good for organs' biomass accumulation, medium and serious drought stress conditions were bad for organs biomass accumulation. Slight and medium drought stress conditions were good for biomass transit to the root in the leaf growing season and serious drought stress condition was not good for that. CONCLUSION: Suitable drought stress can improve the root biomass ratio in Angelica dahurica var. formosana leaf growing season and get a better yield.


Asunto(s)
Angelica/crecimiento & desarrollo , Biomasa , Sequías , Hojas de la Planta/crecimiento & desarrollo , Estrés Fisiológico , Raíces de Plantas/crecimiento & desarrollo , Plantas Medicinales/crecimiento & desarrollo , Factores de Tiempo , Agua
18.
Zhong Yao Cai ; 33(1): 22-5, 2010 Jan.
Artículo en Chino | MEDLINE | ID: mdl-20518298

RESUMEN

OBJECTIVE: To compare the content of imperatorin and HPLC fingerprint of Baizhi collected from different areas. METHODS: The medicinal materials and seeds of Baizhi from 15 main habitats of 7 provinces and cities were collected, and the seeds were planted in the germplasm resource garden of Suining, Sichuan. The content of imperatorin and HPLC fingerprint were compared using the samples collected from different areas and germplasm resource garden collected and dried at the most suitable harvest date. RESULTS: The differences on the content of imperatorin and HPLC fingerprint were obvious. The content of imperatorin significantly increased and the HPLC fingerprint were trending to coincide when the herbs were planted in the same place. CONCLUSION: The environmental factors and the cultivation technique had great influences on the quality of Baizhi.


Asunto(s)
Apiaceae/química , Cromatografía Líquida de Alta Presión/métodos , Furocumarinas/análisis , Plantas Medicinales/química , Apiaceae/crecimiento & desarrollo , China , Análisis por Conglomerados , Cumarinas/análisis , Cumarinas/química , Ecosistema , Raíces de Plantas/química , Plantas Medicinales/crecimiento & desarrollo , Control de Calidad , Reproducibilidad de los Resultados , Semillas/química
19.
Zhongguo Zhong Yao Za Zhi ; 33(16): 1944-7, 2008 Aug.
Artículo en Chino | MEDLINE | ID: mdl-19086624

RESUMEN

A field trial was carried out to study the influence of different kinds of spring topdressing on growth, yield and quality of Ligusticum chuanxiong. The results showed that the spring topdressing had effects of improving root length, tiller numbers and plant height to some extent. At the same time the chlorophyll content and dry weight accumulation especially the dry weight of root increased significantly. It also showed that the yield increased and quality was improved significantly. The effect of different treatment with urea58.7 kg x hm(-2)(N 27 kg x hm(-2)) was the best and the treatment with N,P,K the second.


Asunto(s)
Alcaloides/metabolismo , Ácidos Cumáricos/metabolismo , Fertilizantes , Ligusticum/crecimiento & desarrollo , Ligusticum/metabolismo , Estaciones del Año
20.
Zhong Xi Yi Jie He Xue Bao ; 6(8): 793-8, 2008 Aug.
Artículo en Chino | MEDLINE | ID: mdl-18664346

RESUMEN

OBJECTIVE: To observe the therapeutic effects of Yiqi Sanju Formula (YQSJF), a compound traditional Chinese herbal medicine, in treatment of non-alcoholic fatty liver disease (NAFLD). METHODS: Sixty-seven patients diagnosed with NAFLD were randomly divided into two groups: YQSJF-treated group (39 cases) and placebo group (28 cases). The NAFLD patients in the two groups were treated with YQSJF and placebo respectively for 3 months. Clinical symptoms, the CT ratio of liver-spleen, body mass index (BMI), waist circumference, homeostatic model assessment for insulin resistance (HOMA2-IR) and the levels of alanine aminotransferase (ALT), aspartate aminotransferase (AST), tumor necrosis factor-alpha (TNF-alpha), high sensitivity C-reactive protein (hs-CRP), triglyceride (TG), total cholesterol (TC), high-density lipoprotein (HDL) and low-density lipoprotein (LDL) were evaluated before and after treatment. RESULTS: After treatment, the clinical symptoms were improved and the levels of BMI, waist circumference, HOMA2-IR, ALT, AST, TG and TC were decreased significantly in the YQSJF-treated group (P<0.05). The CT ratio of liver-spleen in the YQSJF-treated group was increased significantly as compared with the placebo group (P<0.01).


Asunto(s)
Medicamentos Herbarios Chinos/uso terapéutico , Hígado Graso/tratamiento farmacológico , Resistencia a la Insulina/fisiología , Fitoterapia , Adulto , Anciano , Alanina Transaminasa/sangre , Aspartato Aminotransferasas/sangre , Femenino , Homeostasis/fisiología , Humanos , Masculino , Persona de Mediana Edad , Resultado del Tratamiento
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA
...