Aim To make a research of rats with focal cerebral ischemia/reperfusion injury on pathological changes in brain and the changes of AQP4 and related proteins, in order to explore the relationship between AQP4 and brain edema. Methods Adult male SD rats, weighting 250~300 g, were randomly divided in-to Sham group and cerebral ischemia/reperfusion ( I/R) injury model group. The I/R model group was di-vided into the I/R-6 h, 12 h, 24 h, 48 h-four time point groups. The animal model of the right MCA is-chemia/reperfusion was established by suture method in mature SD rats. The nerve symptom score was con-ducted in the corresponding time points. Then, the permeability of brain tissue was detected by EB stai-ning;TTC staining was conducted to observe the cere-bral infarction volume;the dry wet weight method was used to detect the changes of brain water content; im-munohistochemical( IHC) , WB and RT-PCR were ap-plied to detect the expression of AQP4 , and the related factors at different time points of the model rats after is-chemia-reperfusion around infarcts. Results Com-pared with the Sham group, then ever function score of the rats in I/R model groups were much higher. With the increase of the reperfusion time, the cerebral in-farction volume, brain tissue permeability and the brain water content were also increased. IHC results showed that AQP4 expression gradually rose with widen distribution. WB and RT-PCR results verified the in-creasing level of AQP4 expression. The detection of the related proteins expression showed apparent changes. The expression of MMP-9 was increased, while the Oc-cludin and JAM-1 expression showed a decreasing trend. The I/R-48 h model group showed the most ob-vious differences in the expression of the related pro-teins and mRNA ( P <0. 01 vs Sham, respectively ) . Conclusion Accompanied with the aggravating cere-bral injury after cerebral ischemia/reperfusion, the ex-pression of AQP4 and MMP-9 level were activated, while the degradation of TJPs, Occludin and JAM-1, was increased. These factors are combined to make the formation of brain edema. This study makes a further research on the formation mechanism of the early stage for cerebral edema on I/R model and offers a potential for intervention in the filed of looking for a reliable drug therapy on cerebral edema.

Objective To explore the clinical effect of endoscopic-assisted intraoral reduction mandibuloplasty.Methods From January 2010 to December 2014,a total of 186 patients with prominent mandibular angles underwent one stage long-curved ostectomy combined with splitting corticectomy through an intraoral approach with endoscopic assistence according to preoperative design for reduction mandible three-dimensionally,and achieved reduced width of the lower face with smooth curve of mandibular edge.The distance between both gonions was measured and the complications recorded to evaluate the clinical effect of the surgery during follow-up.Results All the 186 patients had no complications of bleeding and infection.The mean distance between both gonions measurement was (117.3±2.5) mm before surgery and (102.6±2.3) mm after operation;it was reduced (14.1 ±2.4)mm.After 1 month to 2 years of follow up,the width of the lower face was reduced in the frontal view and the mandibular angle appeared natural and inconspicuous in the lateral view.The patients were satisfied with both their frontal and lateral appearances.Conclusions Intraoral approach mandibular ostectomy with endoscopic-assisted allows surgeons to perform accurate,safe and reproducible ostectomies and to recontour mandible symmetrically and reduce the complications.

Objective To determine the feasibility and safety of transprostatic utricle seminal vesiculoscopy in the treatment of hemospermia. Methods Totally 11 patients with hemospermia, mean age of (46.6 ± 3.5) years, ranging from 38 to 68 years, for 3 months admitted from September 2012 to August 2015 were enrolled, Their main manifestations were hemospermia. Painful ejaculation was observed in 7 patients, and perineal and testicular pain occured in 4 patients. They all underwent transprostatic utricle seminal vesiculoscopy, and then were followed up for 3 to 6 months. Results Ten patients were operated successfully, but 1 patient failed. The operation revealed that the causes of hemospermia were seminal vesiculitis in 8 cases, seminal vesiculitis accompanied with seminal calculi in 2 cases, and ejaculatory duct cyst in 1 case. Operation time was (29.2 ± 3.2) min ( ranging from 25 to 37 min) , and hospital stay was 2 d ( from 2 to 4 d). Hemospermia disappeared in 10 patients within 1 month of surgery, and hemospermia recurrence was observed in 1 patient within 6 months. The patient was treated with transprostatic utricle Holmium laser incision, then hemospermia was dispeared,Two cases of postoperative epididymitis were cured after one week of antibiotic treatment. Conclusions Seminal vesiculoscopy is a safe and effective to treat hemaospermia.

Epmedii Folium is a commonly used traditional Chinese drug, and is beneficial for the "liver" and "kidney" s function in Chinese medicine. Recently, the origin of this drug is more complex. Most of the identification studies are emphasized on the species certified by the pharmacopoeia and other related species from the same genus of Epimedium, but few was emphasized on the counterfeit. In this paper, one counterfeit of Epmedii Folium, identified as the dried leaf of Quercus variabilis (Fam. Fagaceae), has been reported based on field investigation, comparing specimen of Epmedii Folium and Q. variabilis,using the macroscopic, microscopic and TmC methods. It is resulted that they could be identified clearly not only by the macroscopic features, such as the vein character and the tooth apex, but also by the microscopic features, such as the vascular bundles of the midrib, the non-glandular hair, the anticlinal wall of the epidermis cell and the calcium oxalate crystal. Furthermore their TLC chromatograms showed also difference. This study will give reference for the identification of Epmedii Folium and the related supervision and inspection work.
China ; Discriminant Analysis ; Epimedium ; anatomy & histology ; chemistry ; Plant Leaves ; anatomy & histology ; chemistry ; Plants, Medicinal ; anatomy & histology ; chemistry ; Quercus ; anatomy & histology ; chemistry

Objective To investigate the reliability of Assessment of Activities of Daily Living of Chinese Quadriplegics. Methods The scale was administered to 20 patients with quadriplegia twice within one week interval by the same rater, and was administered to the same patients by another rater within 2 days after the first assessment. Results The intraclass correlation coefficient (ICC) of the test-retest reliability was 0.994 (P<0.01); the ICC of the inter-observer reliability was 0.971 (P<0.01). Conclusion Assessment of Activities of Daily Living of Chinese Quadriplegics is an instrument with high test-retest reliability and inter-observer reliability.

Objective To evaluate the automatic synthesis of 18F-labeled cyclic RGD peptide c(RGDyK)and its biological distribution in the tumor-bearing mice. Methods N-succinimidyl-4-18 F-fluorobenzoate (18F-SFB) was automatically synthesized and then re-dissolved in acetonitrile (MeCN). The cyclic RGD peptide c(RGDyK) was mixed with an hydrous DMSO and N, N-diisopropyl ethylamine (DIPEA). 18F-FBRGD was obtained by the reaction of peptide solution with 18 F-SFB. The final product was purified by HPLC gradient separation system and solid-phase extraction method. The biodistribution study and competition test of N-4-18F- fluorobenzoyl-RGD (18F-FB-RGD) in the tumor-bearing mice was performed. Results The labeling yield of 18 F-FB-RGD was (33.6 ± 3.5)%. The synthesis time was 110 min. The radiochemical purity was more than 98%. The tumor uptake of 18F-FB-RGD was (3.43 ±0.15), (2.61 ±0.14), (2.11 ±0.13), and (1.79 ±0.18) %ID/g, respectively, at 30, 60, 90 and 120 min after injection. The ratio of tumor to muscle activity ranged from 4.26 ±0.69 to 5.80 ±0.78. The tumor uptake decreased dramatically after RGD blockage. The uptake was (0.46 ±0.21) %ID/g and (2.87 ±0.59) %ID/g in the blocked and unblocked mice, respectively, at 60 min after blockage. Conclusions 18 F-FB-RGD can be automatically synthesized and it may become a promising tumor imaging agent.

Objective To investigate the expressions of angiopoietin(Ang)-1,-2 and their receptor,Tie-2 in Patients with psoriasis vulgaris and their significance.Methods Tissue samples were collected from 30 patients with psoriasis vulgaris and 15 normal controls.Streptavidin-biotin complex(SABC)method was used to detect the expression of Ang-1,-2 and Tie-2 in these samples.Microvessel density (MVD)was assessed by CD34 staining.Results The expressions of Ang-2 and Tie-2 were significantly higher in patients with psoriasis vulgaris than in the normal controls(7.65±2.14 vs 2.54±0.91,6.09±1.97vs 1.95±0.62,both P<0.01),and higher in patients with active psoriasis than in those with inactive psoriasis (9.85±2.42 vs 4.86±1.63,8.43±1.98 vs 4.57±1.92,both P<0.05),whereas no significant difference was observed in the expression level of Ang-1 between Patients and controls or between patients with active psoriasis and those with inactive psoriasis(all P>0.05).Mcreased MVD was observed in patients、with psoriasis vulgaris compared with the controls(15.46±5.28 vs 2.68±0.79,P<0.01).Also,the expression levels of Ang-2 and Tie-2 were significantly difierent between patients with high MVD and those with low MVD(both P<0.05),while no difference was nomd in the expression of Ang-1 (P>0.05).In psoriatic lesions,a negative correlation was observed between the expression of Ang-1 and Ang-2(r=-0.521,P<0.05),and MVD was negatively correlated with the expression of Ang-2(r=0.656,P<0.01)but unrelated to the expression of Ang-l(r=0.237,P>0.05).Conclusions It is demonstrated that Ang-2 and Tie-2 closely correlate with the angiogenesis in psoriasis,and Ang-2 plays a dominant role in the regulation of angiogenesis in psoriasis.

Fifteen known compounds were isolated from Swertia delavayi by silica gel, Sephadex LH-20 and Rp-18 column chromatographies. Based on extensive spectroscopic analysis (MS, 1H, 13C-NMR), their structures were identified aserythrocentaurin (1), erythrocentaurindimethylacetal (2), sweroside (3), swertiamarin (4), gentiopicroside (5), swertiakoside A (6), 2'-O-acetylswertiamarin (7), 4'-O-[(Z) -coumaroyl] swertiamarin (8), 1,5,8-trihydroxy-3-methoxyxanthone (9), 8-O-β-D-glucopyranosyl-1-hydroxy-2,3, 5-trimethoxyxanthone (10), 8-O-[β-D-xyl- opyranosyl-(1 --> 6)-β-D-glucopyranosyl]-7,8-dihydroxy-3-methoxyxanthone (11), isovitexin (12), β-sitosterol (13), daucosterol (14), and oleanolic acid (15). Among them, ten ones (14, 7-11, 13) were obtained from S. delavayi for the first time. The isolates were evaluated for their anti-HBV activities in HepG 2. 2. 15 cell line in vitro. The results showed that compound 1, 2, 6, 7, 9 and 12 exhibited significant inhibitory activity on HBV DNA replication with IC50 values from 0.05 to 1.46 mmol x L(-1).
Antiviral Agents ; chemistry ; isolation & purification ; Drugs, Chinese Herbal ; chemistry ; isolation & purification ; Hepatitis B virus ; drug effects ; genetics ; Magnetic Resonance Imaging ; Molecular Structure ; Spectrometry, Mass, Electrospray Ionization ; Swertia ; chemistry

OBJECTIVETo investigate prevalence of human immunodeficiency virus (HIV) infection and risk factors for its transmission among injection drug users (IDUs) in Liangshan Yizu Autonomous Prefecture of Sichuan Province, China.

METHODSA community-based survey was conducted to investigate demographic characteristics, pattern and frequency of sharing injection equipment, and sexual behaviors in IDUs. Blood samples were also collected from them to detect for antibodies against HIV and syphilis.

RESULTSA total of 379 subjects were recruited with informed consent for study through community outreach and peer recruiting methods. Their prevalence of HIV infection was 11.3% (43/379). Ethnicity, frequency of sharing syringes and cotton swab during the past three months and syphilis infection associated with HIV infection by univariate analysis using chi-square test. Multivariate logistic regression analysis showed odds ratio of frequency of sharing syringes for HIV infection during the past three months was 2.28 (95% CI 1.18 - 4.43), and that for syphilis infection 3.10 (95% CI 1.48 - 6.48).

CONCLUSIONFrequency of sharing syringes during the past three months associated with syphilis and HIV infection.

Adolescent ; Adult ; China ; epidemiology ; Disease Transmission, Infectious ; Female ; HIV Infections ; epidemiology ; transmission ; Humans ; Logistic Models ; Male ; Needle Sharing ; adverse effects ; Prevalence ; Sexual Behavior ; Substance Abuse, Intravenous ; virology

This paper presents a computer-aided diagnosis method for prostate cancer detection using Trans-rectal ultrasound(TRUS) images. Firstly, statistical texture analysis is implemented in every ROI in segmented prostate images. From each ROI, grey level difference vector features, edge-frequency features and texture features in frequency domain are constructed. Then, the number of features is reduced using ANOVA statistics to select the optimal feature subset. Finally, SVM is applied to the selected subset for detecting the cancer regions. Experimental results show that the proposed algorithm can recognize and detect the cancer images effectively so as to supply essential information for a diagnosis.
Algorithms ; Artificial Intelligence ; Humans ; Image Interpretation, Computer-Assisted ; methods ; Male ; Neural Networks (Computer) ; Prostatic Neoplasms ; diagnostic imaging ; Signal Processing, Computer-Assisted ; Ultrasonography