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1.
China Journal of Chinese Materia Medica ; (24): 52-59, 2023.
Article in Chinese | WPRIM | ID: wpr-970501

ABSTRACT

This study investigated the choroplast genome sequence of wild Atractylodes lancea from Yuexi in Anhui province by high-throughput sequencing, followed by characterization of the genome structure, which laid a foundation for the species identification, analysis of genetic diversity, and resource conservation of A. lancea. To be specific, the total genomic DNA was extracted from the leaves of A. lancea with the improved CTAB method. The chloroplast genome of A. lancea was sequenced by the high-throughput sequencing technology, followed by assembling by metaSPAdes and annotation by CPGAVAS2. Bioiformatics methods were employed for the analysis of simple sequence repeats(SSRs), inverted repeat(IR) border, codon bias, and phylogeny. The results showed that the whole chloroplast genome of A. lancea was 153 178 bp, with an 84 226 bp large single copy(LSC) and a 18 658 bp small single copy(SSC) separated by a pair of IRs(25 147 bp). The genome had the GC content of 37.7% and 124 genes: 87 protein-coding genes, 8 rRNA genes, and 29 tRNA genes. It had 26 287 codons and encoded 20 amino acids. Phylogenetic analysis showed that Atractylodes species clustered into one clade and that A. lancea had close genetic relationship with A. koreana. This study established a method for sequencing the chloroplast genome of A. lancea and enriched the genetic resources of Compositae. The findings are expected to lay a foundation for species identification, analysis of genetic diversity, and resource conservation of A. lancea.


Subject(s)
Phylogeny , Atractylodes/genetics , Genome, Chloroplast , Whole Genome Sequencing , Microsatellite Repeats , Lamiales
2.
Chinese journal of integrative medicine ; (12): 304-311, 2022.
Article in English | WPRIM | ID: wpr-928957

ABSTRACT

OBJECTIVE@#To assess the efficacy and safety of mulberry twig alkaloids (Sangzhi alkaloids, SZ-A) for treatment of type 2 diabetes in a randomized, double-blind, placebo-controlled multicenter clinical trial.@*METHODS@#A total of 200 patients were randomized to receive SZ-A (n=100) or placebo (n=100) for 16 weeks. The data analysis system for electronic data capture clinical trial central randomization system was used for randomization and dispensing of drugs. The primary outcome was the change in glycosylated hemoglobin (HbA1c) level. The secondary outcome included the proportions of cases with HbA1c <7.0% and HbA1c <6.5%, fasting blood glucose (FBG), postprandial blood glucose (PBG), area under curve for the PBG (AUC0-2h), body weight, and body mass index (BMI). Adverse events (AEs), severe adverse events (SAEs), treatment-related adverse events (TAEs), gastrointestinal disorders (GDs), blood pressure, routine blood tests, and liver and kidney function were monitored.@*RESULTS@#Compared with baseline, the change of HbA1c at week 16 was -0.80% (95% CI: -0.98% to -0.62%) and -0.09% (95% CI: -0.27% to 0.09%) in SZ-A group and placebo group, respectively. The proportion of patients with HbA1c <7% and <6.5% was higher in the SZ-A group than in the placebo group (46.8% vs. 21.6% and 29.9% vs. 10.8%). The observed values and changes in FBG, 1 h-PBG, 2 h-PBG, and AUC0-2h differed significantly between groups (P<0.001), but differences were not significant in body weight and BMI (P>0.05). The incidence rates of AEs, TAEs, and GDs differed significantly between groups (P=0.010, P=0.005, and P=0.006, respectively), whereas the incidence rates of SAEs showed no significant differences between groups (P=1.000).@*CONCLUSION@#SZ-A are effective and safe for treatment of type 2 diabetes. The protocol was registered in http://www.chictr.org.cn/showproj.aspx?proj=60117 (ChiCTR2000038550).


Subject(s)
Humans , Alkaloids , Blood Glucose , Diabetes Mellitus, Type 2/drug therapy , Double-Blind Method , Glycated Hemoglobin , Hypoglycemic Agents/therapeutic use , Morus , Tablets/therapeutic use , Treatment Outcome
3.
Chinese Journal of Experimental Traditional Medical Formulae ; (24): 142-147, 2019.
Article in Chinese | WPRIM | ID: wpr-801978

ABSTRACT

Objective: To screen the specific reverse primers of Galli Gigerii Endothelium Corneum,duck gizzard membrane and goose gizzard membrane,and establish a specific PCR for molecular identifying Galli Gigerii Endothelium Corneum and its common adulterants. Method: Based on the mutation sites on the 12S rRNA sequence,specific polymerase Chain reaction(PCR) identify primers were designed for chicken,duck and goose gizzard membrane. The specific PCR reaction conditions were optimized,and the PCR identification method was explored and verified in terms of tolerance and feasibility. Thirty batches of Galli Gigerii Endothelium Corneum decoction pieces extracted from the test were identified. Result: Thirty batches of Galli Gigerii Endothelium Corneum decoction pieces were detected using chicken-specific primers, 273 bp of specific bands was amplified and visualized on the agarose electrophoregram. When duck and goose primers were used,no corresponding amplified band was detected. Conclusion: The allele-specific PCR method can be used as a rapid and accurate method to identify Galli Gigerii Endothelium Corneum. It is a promise method for special sampling tasks of Chinese herbal medicine and decoction tablets nationwide.

4.
Journal of Preventive Medicine ; (12): 170-172,175, 2018.
Article in Chinese | WPRIM | ID: wpr-792715

ABSTRACT

Objective To learn the prevalence, distribution and risk factors of mild cognitive impairment (MCI) among elderly in Zhoushan City, and to provide the reference for MCI control. Methods A total of 1801 elderly people aged 60 to 79 years old from six districts of Zhoushan City were sampled by method of stratified random sampling. After self-evaluated with Ascertain Dementia 8 (AD8) and screened with Screening Scale for Mild Cognitive Impairment (sMCI), the diagnosis by specialists was conducted for that positive to AD8 and sMCI. Results of 1801 respondents, 873 (48.47%) people were male, and the other 928 (51.53%) people were female; 38.65% of the people selected aged 60-<65; 90.28% had a primary school education or were illiterate; 78.51% had legitimate and healthy wives. A total of 122 elderly people were diagnosed with MCI, and the prevalence of MCI was 6.77%. Multivariate logistic regression analysis showed that male elderly people (OR=0.53, 95%CI:0.28-1.00) were less likely to develop MCI compared to the female, and the illiterate (OR=2.09, 95%CI: 1.16-3.77) were more likely to develop MCI compared to the educated . Conclusion The prevalence of MCI among the elderly in Zhoushan was 6.77%; the female and the illiterate were more likely to develop MCI.

5.
National Journal of Andrology ; (12): 227-228, 2017.
Article in Chinese | WPRIM | ID: wpr-812781

ABSTRACT

Objective@#To investigate the effects of the compound preparation Jinghuosu on oligospermia and asthenospermia.@*METHODS@#This multi-centered clinical study included 120 cases of mild to moderate idiopathic oligospermia or asthenospermia, all treated with oral Jinghuosu once a bag, bid, for 3 successive months. Before and at 1, 2 and 3 months after treatment, we detected sperm concentration, total sperm motility, progressive sperm motility and normal sperm morphology of each ejaculate, and recorded whether the patients had any adverse reactions.@*RESULTS@#After 3 months of treatment, all the patients showed obvious improvement in semen parameters, most significantly in sperm concentration, total sperm motility, and the percentages of progressive motile sperm and morphologically normal sperm (P <0.05). No significant adverse reactions were observed during the 3 months of medication.@*CONCLUSIONS@#Jinghuosu has a significant efficacy and no obvious adverse effect in the treatment of mild to moderate oligospermia and asthenospermia.


Subject(s)
Humans , Male , Asthenozoospermia , Drug Therapy , Drugs, Chinese Herbal , Therapeutic Uses , Oligospermia , Drug Therapy , Semen , Physiology , Sperm Count , Sperm Motility
6.
Acta Pharmaceutica Sinica ; (12): 1374-1379, 2015.
Article in Chinese | WPRIM | ID: wpr-320074

ABSTRACT

Data quality management system is essential to ensure accurate, complete, consistent, and reliable data collection in clinical research. This paper is devoted to various choices of data quality metrics. They are categorized by study status, e.g. study start up, conduct, and close-out. In each category, metrics for different purposes are listed according to ALCOA+ principles such us completeness, accuracy, timeliness, traceability, etc. Some general quality metrics frequently used are also introduced. This paper contains detail information as much as possible to each metric by providing definition, purpose, evaluation, referenced benchmark, and recommended targets in favor of real practice. It is important that sponsors and data management service providers establish a robust integrated clinical trial data quality management system to ensure sustainable high quality of clinical trial deliverables. It will also support enterprise level of data evaluation and bench marking the quality of data across projects, sponsors, data management service providers by using objective metrics from the real clinical trials. We hope this will be a significant input to accelerate the improvement of clinical trial data quality in the industry.


Subject(s)
Benchmarking , Clinical Trials as Topic , Data Collection , Reference Standards , Information Storage and Retrieval , Reference Standards , Quality Control
7.
Acta Pharmaceutica Sinica ; (12): 1415-1419, 2015.
Article in Chinese | WPRIM | ID: wpr-320066

ABSTRACT

With the deployment of electronic medical records systems, more and more routine clinical data are recorded electronically, which become a potential data source for new drug clinical trials. In this paper, we summarized the opportunities, challenges, obstacles and the latest development in this field.


Subject(s)
Clinical Trials as Topic , Data Collection , Methods , Drug Evaluation , Electronic Health Records
8.
Acta Pharmaceutica Sinica ; (12): 1428-1433, 2015.
Article in Chinese | WPRIM | ID: wpr-320063

ABSTRACT

CDISC standard has become a set of global data standards that can be used in clinical study, covering the full life cycle of clinical researches. After nearly 20 years of development and continuous version upgrades, CDISC standard can improve the quality and efficiency of clinical research and drug review, and to facilitate all stakeholders involved in researches to exchange the study data and communicate the outcomes. CDISC standard has been or is to be adopted as standard format in data submission by multiple regulatory authorities, and more widely implemented by the global pharmaceutical community. CDISC standard is gradually adopted in China. The feasibility and roadmap of CDISC standard as the Chinese data submission format requirements are undergoing exploration and piloting further.


Subject(s)
Biomedical Research , Reference Standards , China , Clinical Trials as Topic , Reference Standards , Data Collection , Reference Standards
9.
Acta Pharmaceutica Sinica ; (12): 1474-1479, 2015.
Article in Chinese | WPRIM | ID: wpr-320055

ABSTRACT

A CDASH-based CRF annotation plays an important role in database setup and data verification. The STDM-based CRF annotation is also one of the essential documents when the package of clinical trial data is submitted to the regulatory authority. This paper describes the contents, procedures and related stipulations used in the CDISC-based CRF annotation.


Subject(s)
Clinical Trials as Topic , Databases, Factual , Documentation , Reference Standards
10.
Acta Pharmaceutica Sinica ; (12): 1488-1492, 2015.
Article in Chinese | WPRIM | ID: wpr-320052

ABSTRACT

There is no a systemic performance metrics for clinical data management. While the CDMC in China starts to develop the quality metrics for clinical data management, it is essential to think over the performance and pursue metrics implementation of clinical data management in China. This article provides the basic concept, development and implementation of the performance metric in clinical data management.


Subject(s)
China , Clinical Trials as Topic , Reference Standards , Data Collection , Reference Standards , Information Storage and Retrieval , Reference Standards
11.
World Journal of Emergency Medicine ; (4): 135-138, 2014.
Article in Chinese | WPRIM | ID: wpr-789661

ABSTRACT

BACKGROUND:Ventricular arrhythmia (VA) is one of the most common complications of myocardial infarction (MI), and ventricular tachycardia and fibrillation are the main causes for sudden cardiac death. This study aimed to explore the effect of ramipril on the occurrence of VA and its mechanism after MI in rabbits. METHODS:Twenty-four New Zealand rabbits purchased from the Wuhan Laboratory Animal Research Center were divided into three groups:sham-operated (SHAM) group (n=8), MI group (n=8) and MI with ramipril (RAM) group (n=8). Rabbits in the SHAM group received a median sternotomy without ligation of the left ventricular coronary artery. Rabbits in the MI and RAM groups received a median sternotomy followed by ligation of the left coronary artery. The successful anterior MI was confirmed by elevation of the ST segment with more than 0.2 mV in lead II and III. After MI, rabbits in the RAM group were fed with intragastric ramipril (1 mg/kg per day ) for 12 weeks. Before and 12 weeks after MI in the three groups, ventricular tachycardia or fibrillation (VT/VF) episodes and MAP in cadiocytes of the epicardium, mid-myocardium and endocardium were recorded by a multichannel physiograph. Student'st test and ANOVA were used for statistical analysis. RESULTS:VT/VF episodes were decreased more markedly in the RAM group than in the MI group after 12 weeks (2.6±0.8 vs. 12.4±2.9,P<0.05). Twelve weeks after MI, the duration of repolarization for 90% (APD90) of three-tier ventricular myocytes in the MI group was longer than that before MI (258.2±21.1 vs. 230.1±23.2, 278.0±23.8 vs. 245.8±25.4, 242.6±22.7 vs. 227.0±21.7,P<0.05). However, the APD90 was not significantly different at 12 weeks before and after MI in the RAM group (P>0.05). Moreover, the transmural dispersion of repolarization (TDR) was increased more markedly 12 weeks after MI in the MI group than in the SHAM and RAM groups (36.2±10.2 vs. 18.7±6.2, 24.9±8.7,P<0.05). But the TDR was not significantly different between the RAM and SHAM groups (18.7±6.2 vs. 24.9±8.7,P>0.05). CONCLUSION:Ramipril may reduce the incidence of malignant ventricular arrhythmia via improvement of transmembrance repolarization heterogeneity after MI.

12.
Chinese Traditional and Herbal Drugs ; (24): 829-833, 2013.
Article in Chinese | WPRIM | ID: wpr-855408

ABSTRACT

Objective: To study the difference of substantial base of Baihuasheshecao (Hedyotis Diffusae Herba) Injection (BSCI) within the nationwide. Methods: To determine 16 batches of samples by UPLC-QTOF-MS and analyze the data according to a variety of retention time and m/z by principal component analysis (PCA). Results: The results showed that the difference itself was smaller but between each other was bigger among the different enterprises. Seven markers greatly impacted on the components through loading plot analysis were found. Conclusion: BSCIs from different enterprises within nationwide are not only obviously different in color but also different in substantial base, which especially indicates the content of flavonoids and organic acids.

13.
Chinese Journal of Geriatrics ; (12): 702-704, 2013.
Article in Chinese | WPRIM | ID: wpr-436884

ABSTRACT

Objective To explore the effects of amlodipine,perindopril and valsartan on plasma adiponectin and retinol binding protein 4 in elderly patients with essential hypertension.Methods From March 2007 to July 2010,238 elderly patients with essential hypertension were selected and 193 cases completed this study.Patients were randomly divided into 3 groups:amlodipine group (n=68),perindoprilgroup (n=60) and valsartan group (n=65).Patients in each group were treated with amlodipine,perindopril and valsartan respectively for at least 12 weeks.The changes in blood pressure,heart rate,body height,body mass index (BMI),abdominal circumference,waist circumference (WC),levels of blood lipids,plasma adiponection and retinol binding protein 4 were observed before and after treatment.Results Compared with pre-treatment,systolic blood pressure in 3 groups were significantly decreased after treatment (all P<0.01).There were no significant differences in blood pressure among 3 groups after treatment (all P>0.05).Compared with pre treatment,plasma adiponectin level was significantly increased in perindopril group and valsartan group after treatment [(7.4±1.8) μg/L vs.(8.3± 1.8) μg/L,(7.5±1.7) μg/L vs.(8.4±1.9)μg/L,both P<0.01].Plasma adiponectin level was higher in perindopril group and valsartan group than in amlodipine group after treatment [(8.3±1.8) μg/L vs.(7.6±1.8) μg/L,(8.4±1.9) μg/Lvs.(7.6±1.8) μg/L,both P<0.05].Compared with pretreatment,plasma retinol binding protein 4 level in 3 groups were all decreased after treatment,and the decrements had significant differences in perindopril group and valsartan group (both P<0.01) but had no difference in amlodipine group (P>0.05).Plasma adiponectin retinol binding protein 4 levels were lower in perindopril group and valsartan group than in amlodipine group after treatment[(36.6± 14.2) μg/L vs.(42.7± 13.8) μg/L,(36.3±14.1) μg/L vs.(42.7±13.8) μg/L,respectively,both P<0.01].Conclusions Perindopril and valsartan play important roles in cardiovascular protection beyond the antihypertensive effects by increasing plasma adiponection level and decreasing plasma retinol binding protein 4 level in elderly patients with hypertension.

14.
Chinese Journal of Geriatrics ; (12): 843-846, 2012.
Article in Chinese | WPRIM | ID: wpr-420728

ABSTRACT

Objective To retrospectively analyze the relationship of the classification and risk stratification in senile hypertension with benign prostatic byperplasia (BPH).Methods Totally 376 male senior patients,including 233 senile hypertensive patients and 143 non-hypertensive patients as a control,were enrolled in this study.There were 35 cases of hypertension at level 1,82 cases at level 2,116 cases at level 3.Based on risk stratification of hypertension,there were 3 cases of low-risk,28 cases of medium risk,75 cases of high-risk,127 cases of very high risk.All candidates accepted the International Prostatic Symptom Score (IPSS) assessment before the treatment.Fasting blood glucose (FBG),total cholesterol (TC),triglycerides (TG),low density lipoprotein cholesterol (LDL-C),high density lipoprotein cholesterol (HDL-C) and prostate specific antigen (PSA) were determined.Body mass index (BMI) and prostate volume (PV) were calculated.Relationship of classification and risk stratification in hypertension with BPH were analyzed.Results The levels of systolic blood pressurc (SBP),diastolic blood pressure (DBP),body weight,BMI,FBG and TC were higher (t=3.883,2.498,2.161,3.399,2.200,2.370,P<0.05 or P<0.01),while serum HDL-C were lower (t=2.036,P<0.05) in hypertensive patients than in control group.Compared with the control group,IPSS and PV was increased (t =3.432,3.381,both P<0.01) in hypertension group.Risk rate of hypertensive patients with BPH was 2.03 times (95%CI:1.33-3.11,P<0.01) as compared with control group.In hypertensive patients,PV and IPSS were higher in level 2 or 3 grade group than in level 1 group (F=6.890,7.576,all P<0.01).PV and IPSS in high risk and very high risk groups were enhanced as compared with those in low-medium risk group (F=30.608,19.804,all P<0.01).Pearson analysis showed that PV was positively correlated with SBP,FBG and TC(r=0.223,0.251,0.305,all P<0.05),while negatively correlated with HDL-C(r =-0.235,P<0.05).Similarly,IPSS was positively correlated with SBP,DBP and FBG (r=0.396,0.273,0.224,all P<0.01),while negatively correlated with HDL-C (r =-0.288,P< 0.01).Conclusions High incidence of BPH appears in the elderly men with hypertension.The increased PV and IPSS coexist with conventional risk factors of essential hypertension.Development of BPH is closely related to higher blood pressure and risk stratifications of hypertension.

15.
Chinese Journal of Emergency Medicine ; (12): 397-400, 2012.
Article in Chinese | WPRIM | ID: wpr-418751

ABSTRACT

Objective To determine whether specific angiotensin-conventing enzyme inhibitor with ramipril would affect ventricular arrhythmia generation in rabbits after myocardial infarction and discuss the mechanism of its antiarrhymic efficacy.MethodsTwenty-four New Zealand rabbits (Wuhan Laboratory Animal Research Center) were separated into 3 groups:sham-operated (SHAM) group (n =8 ),myocardial infraction (MI) group ( n =8) and myocardial infraction with ramipril (RAM) group ( n =8).SHAM group received a median sternotomy without left ventricular coronary artery ligation.MI and RAM groups' rabbits received a median sternotomy followed by left coronary artery ligation. The successful anterior MI was confirmed by elevation of the ST segment with more than 0.2 mV in lead Ⅱ and Ⅲ.After MI,RAM group rabbits were fed with ramipril [ 1mg/ ( kg · d) ]by intragastric administration for 12 weeks.Before and after MI 12 weeks in three groups.Ventricular tachycardia or fibrillation episodes and the monophasic actionpotential duration in epicardium,mid-myocardium and endocardium cadiocytes were recorded.The statistical technique was t-test and ANOVA.Results Ventricular tachycardia or fibrillation episodes were markedly decreased in RAM group than that in MI group after 12 weeks [ (2.6 ± 0.8) vs.(12.4 ± 2.9),P <0.05 ].After MI 12 weeks,the action potential duration of repolarization 90% (APD90) of three-tier ventricular myocytes in MI group was prolonged than that before MI [ (258.2 ±21.1 ) vs.(230.1 ±23.2),( 278.0±23.8 ) vs.(245.8±25.4),(242.6±22.7) vs.(227.0±21.7),P<0.05]; however,it was not significant difference between before and after MI 12w in RAM group (P > 0.05 ).Moreover,the transmural dispersion of repolarization(TDR) was markedly increased after MI 12w in MI group than in SHAM and RAM group [ (36.2 ± 10.2 ) vs.( 18.7 ± 6.2 ),(24.9 ± 8.7 ),P < 0.05 ]; but the TDR was not significant difference between RAM and SHAM group ( 18.7 ± 6.2 ) vs.( 24.9 ± 8.7 ),P > 0.05].ConclusionsRamipril significantly reduced the malignant arrhythmia incidence in rabbits after MI.Mended the abnormal TDR was the mechanism for ramipril to therapy.

16.
Chinese Journal of Otorhinolaryngology Head and Neck Surgery ; (12): 991-995, 2012.
Article in Chinese | WPRIM | ID: wpr-262423

ABSTRACT

<p><b>OBJECTIVE</b>To evaluate a microarray-based mutation screening method for genetic deafness and its application in prenatal diagnosis.</p><p><b>METHODS</b>Mutation screening of common deafness genes was performed in pregnant women and volunteers spouses. Nine common mutations in four major deafness genes, GJB2, GJB3, SLC26A4 and mitochondrial 12S rRNA, were detected simultaneously by a microarray-based method. Genetic counseling was given based on their testing results.</p><p><b>RESULTS</b>5.11% of pregnant women carried at least one mutation. Among them, seven carried mutation in the mitochondria 12S rRNA gene and were offered aminoglycoside-induced ototoxicity warning. For other mutation carriers of GJB2 or SLC26A4 genes, additional mutation screening was performed in their husbands by direct sequencing. A total of 20 couples were at risk of giving birth to children with genetic deafness. Of five couples who selected to undergo prenatal diagnostic testing of the fetus, four were diagnosed as wild type or heterozygous for the tested genes and one as p.V37I/c.235delC compound heterozygous for GJB2.</p><p><b>CONCLUSIONS</b>DNA microarray is a quick, easy and reliable method to screen mutations in genetic deafness genes. Application of this method in prenatal screening and diagnosis might effectively reduce the occurrence of genetic deafness.</p>


Subject(s)
Adult , Female , Humans , Pregnancy , Young Adult , Connexins , Deafness , Diagnosis , Genetics , Genetic Counseling , Genetic Testing , Mutation , Oligonucleotide Array Sequence Analysis , Pregnancy Trimester, Second , Prenatal Diagnosis , Methods
17.
Chinese Journal of Clinical Nutrition ; (6): 56-58, 2011.
Article in Chinese | WPRIM | ID: wpr-412478

ABSTRACT

Objective To explore the role of process management in preventing peripheral central venous catheter (PICC)-related bloodstream infections (CRBSI). Methods A standard process management policy was established for the uniform management of PICC in our hospital. The incidences of CRBSI before and after the implementation of this policy were compared. Results The incidences of CRBSI was 6.0‰ (48/79 793 ) every 1000 catheter-days before process management and 2.9‰ (29/99643) after process management (P =0.000).Conclusion Standard process management can effectively prevent and control CRBSI caused by PICC.

18.
Clinical Medicine of China ; (12): 57-59, 2011.
Article in Chinese | WPRIM | ID: wpr-384861

ABSTRACT

Objective To explore the significance of serum cystatin C (Cys C)and β2-microglobulin (β2-MG) levels in blood and urine samples in hypertension grading and risk stratifying. Methods One hundred and thirty six cases with primary hypertension were enrolled into the study and classified into three grades and four risk stratifications. The serum Cys C levels were determined by ELISA assay. The blood and urine β2-MG were measured by radioimmunoassay. The serum BUN, Cr concentration were measured by the automatic biochemical analyzer. Results The positive rates of urine β2-MG were the highest index in patients with grade 1 (32%) and low risk hypertension( 8% ) ,followed by serum Cys C levels( grade 1 hypertension 24% ) ,compared with other indices( Ps < 0. 05 ). With the blood pressure elevating, as well as the risk stratification increasing,serum Cys C level and the blood, urine β2-MG levels increased gradually by grading and stratifications (Ps <0. 05 or Ps <0. 01 ). We also found linear regression relationship between serum Cys C ,urine β2-MG levels and the risk stratifications of hypertension( r =0. 851 and r =0. 469 respectively,Ps <0. 01 ). The significant changes of serum BUN,Cr were only found in patients with grade 3 or very high-risk hypertension. Conclusion Joint detection of serum Cys C and urine β2-MG may help to detect early glomerular and tubular dysfunction in primary hypertension patients. Serum Cys C and blood, urine β2-MG levels are also related with the occurrence and development of hypertension,which show clinical significance in hypertension prognosis.

19.
Journal of Southern Medical University ; (12): 1164-1168, 2011.
Article in Chinese | WPRIM | ID: wpr-235172

ABSTRACT

For accurate segmentation of the magnetic resonance (MR) images of meningioma, we propose a novel interactive segmentation method based on graph cuts. The high dimensional image features was extracted, and for each pixel, the probabilities of its origin, either the tumor or the background regions, were estimated by exploiting the weighted K-nearest neighborhood classifier. Based on these probabilities, a new energy function was proposed. Finally, a graph cut optimal framework was used for the solution of the energy function. The proposed method was evaluated by application in the segmentation of MR images of meningioma, and the results showed that the method significantly improved the segmentation accuracy compared with the gray level information-based graph cut method.


Subject(s)
Humans , Algorithms , Artificial Intelligence , Image Enhancement , Methods , Image Interpretation, Computer-Assisted , Methods , Imaging, Three-Dimensional , Methods , Magnetic Resonance Imaging , Methods , Meningeal Neoplasms , Diagnosis , Pathology , Meningioma , Diagnosis , Pathology , Pattern Recognition, Automated , Methods
20.
Chinese Journal of Emergency Medicine ; (12): 949-952, 2010.
Article in Chinese | WPRIM | ID: wpr-387108

ABSTRACT

Objective To determine the effects of valsartan, a specific angiotensin Ⅱ type 1 receptor blockade, on arrhythmia in rabbits after myocardial infarction and to discuss the mechanism. Method Twentyfour rabbits were randomly (random number) divided into sham operated (SO) group ( n = 8), myocardial infarction (MI) group ( n = 8) and valsartan (VAL) group ( n = 8). The rabbits of SO group were operated upon with median stemotomy without left ventricular coronary artery hgature. The rabbits of MI group and VAL group had median stemotomy with left ventricular coronary artery ligature. After MI, the rabbits of VAL group were fed with border zone of infracted left ventricular wall and the L-type calcium current was recorded by whole-cell patch clamp technique. Results Ventricular tachycardia or fibrillation (VT/VF) episodes were markedly decreased in VAL group than that in MI group [(3.2 ± 0. 6) vs. ( 11.7 ± 1.8)] after 12 weeks. The density of Ica-L current was higher in MI group than that in SO group and VAL group [( - 9.12 ± 0.73) pA/pF vs. ( - 6.29 ± 0.65) pA/pF and ( - 6.75 ± 0.64) pA/pF], ( P < 0.05), however, there were no significant differences in Ica-L current between So group and VAL group ( P > 0.05). Conclusions Valsartan reduces the VT/VF episodes in rabbits after MI. The effects of valsartan may be attributed to the inhibited electrical remodeling after MI.

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