Objective To establish a flow cytometric method for assay of platelet aggregation induced by shear stress(SIPA) and investigate its clinical value. Methods After the whole blood was subjected to a certain shear stress by a rotational viscometer, the platelets were activated and aggregated. Then the fluorescence antibody CD61 PerCP was added to stain the platelets. The free platelets and aggregates were counted respectively by flow cytometry, thereby the ratio of platelet aggregation was calculated. Results Shear stress-induced whole blood platelet aggregation varied with the increase of shear stress and time of stress. Only a small amount of platelet aggregation was detected at relatively low shear stress of 100S -1, and it was increased at 500S -1. However, a significant increase occurred with 2 000S -1. It approached to the maximum value (58.4%?5.3%) at 3 000S -1 with exposure of 3min, which was higher than the values at 100S -1(9.4%?1.3%)and 500S -1(26.4%?3.2%). At the same time, the aggregates increased in size and became more compact with increase in the shear stress and prolongation of time. High shear stress induced platelet aggregation(H-SIPA) was significantly enhanced in patients with AMI, cerebral infarction, TIA or diabetes, all of them were susceptible to coagulopathy, compared with normal control. Conclusion The results indicated that shear stress could induce platelet aggregation directly, and the degree of SIPA had positive correlation with the stress stength and exposure time.The measurement of H-SIPA was of some clinical value in the diagnosis of arterial thrombosis.

Through a congenital cleft hand cleft foot line analysis of clinical manifestations, the mode of inherit-ance, clinical type of 15 patients. It was found that the pedigrees of congenital foot deformity in patients with cleft hand cleft hand split foot crack were typical, and non-syndromic. The disease presents the typical pedigree body autosomal dominant mode of inheritance, clinical manifestations of the great differences between patients, the pres-ence of significant genetic heterogeneity.

In order to have a better understanding of the species diversity of medical plants in Enshi, Hubei of China, extensive field investigations and specimen collections were conducted in Enshi and adjacent regions. Based on field observations of plants in their living habitats and comparative morphological studies on specimens in herbarium of Hubei minzu University and other available herbaria as well, three new records of medical plants in Hubei, Scutellaria yunnanensis, Alangium faberi var. heterophyllum, and Drymaria diandra, were reported in this paper.
China ; Plants, Medicinal ; Records as Topic

BACKGROUND:The biological substances fixed onto the implant surface, including specific proteins, enzymes, polypeptides, could promote the proliferation and differentiation of osteogenic cells in order to achieve a good osteogenic effect.
OBJECTIVE:To introduce the biological characteristics of the arginine-glycine-aspartic acid (RGD) peptides, cellbiological behavior and implant osseointegration in osteoporosis.
METHODS:Authors retrieved the relevant articles in PubMed database (January 1984 to January 2013), Wanfang database (January 2002 to December 2012) and CHKD database (January 2002 to December 2012) using the key words“RGD peptides, osteoporosis, bone marrow mesenchymal stem cells, osseointegration, osteoblast, induced differentiation”. Papers were included concerning the biological characteristics of RGD peptides, the biological behavior of cells and the bone-implant integration in osteoporosis.
RESULTS AND CONCLUSION:Osseointegration on the surface between implant and bone tissue can be further improved by grafting biological y active substance. Bionics modification, to simulate the extracellular matrix environment in vivo, can promote celladhesion and growth, which is an effective way to improve osseointegration and is also an important direction of research in the field of tissue engineering recently. The future research is focused on designing specific and efficient polypeptides and simple and effective fixation methods.

Objective To explore the relationship between plasma mannose-binding lectin (MBL), lipopolysaccharide (LPS) and body mass index in pregnant women with gestational diabetes mellitus (GDM). Methods 45 newly diagnosed GDM pregnant women and 45 healthy women (control group) were selected in this study. Plasma concentration of MBL and LPS were measured. All the groups were sub-divided into obesity (BMI ≥ 25 kg/m2) and non-obesity (BMI < 25 kg/m2) subgroup. The relationships of levels of plasma LPS, MBL with BMI were analyzed. Results The level of plasma MBL in GDM group was significantly lower than that in control group(P < 0.05), while the concentration of LPS in serum was much higher than that in healthy pregnant women (P < 0.05). Pearson analysis showed the level of MBL in GDM group was negatively correlated with BMI(r=-0.28, P<0.05), serum LPS concentration was positively correlated with BMI(r = 0.62, P < 0.05) and LPS was negatively correlated With MBL(r = -0.43, P < 0.05) . The above correlations were not found in control group. Conclusion Serum MBL and LPS maybe two important risk factors for those pregnant women being overweight, and could offer great significance for the prevention and treatment of GDM.

The Infectious hypodermal and hematopoietic necrosis virus (IHHNV) and Taura syndrome virus (TSV) are two important shrimp viruses in cultured shrimp in America. These two viruses were transmitted to China at the beginning of the 21st century. In this study, 214 shrimp samples of Penaeus vannamei were collected from seven different areas of China and tested by PCR for IHHNV and TSV infection. The results showed that there were a high prevalence of IHHNV (65.42%) and low prevalence of TSV (3.27%) in the tested samples. Several samples were found to be co-infected with these two viruses. A 3 kb fragment of 7 positive IHHNV samples and a structure protein region (ORF2) of three TSV positive samples were amplified and sequenced. The sequence comparison indicated that both IHHNV and TSV sequenced in China have a low genetic variations compared with the prototype IHHNV and TSV from Hawaii. Phylogenetic analysis showed that TSV isolates were clustered into two groups, Asia and America group, which was genetically correlated to geographic distribution.

Xiaoqinglong Decoction comes from Shang Han Lun, which is the main treatment for wind chill and fluid retention. It is treated as a classic formula for cold-cough, which syndromes of no sweat but tight pulse, cough, cough with white phlegm, and vomiting. This article discussed the efficacy of Xiaoqinglong Decoction in tonifying yang in lung, which can help transport phlegm, and then cough can be relieved.

We have reformed our patterns and methods of graduation examination of the medical majors. That is the multi-stage comprehensive graduation examination of the clinical interns, which consists of 70% close written test of clinical theories,20% practical test of clinical skills and also oral test of related theories, and 10% writing of the medical documents. It has proved that these measures have improved the interns' attitude toward practice, aroused their initiative and positivity, and led the practitioners to attach more importance to the combination of clinical practice and theories, thus leading to better clinical education.

Objective:To investigate the effect of thermal conductivity on the apical sealing ability of different dental gutta-percha cones during the warm vertical condensation obturation.Methods:Four kinds of dental gutta-percha cones were used in this study:Bio-GP points (BP,B&L,Korea),large-tapered gutta-percha (DP,DENTSPLY,America),PROTAPER Universal gutta-percha points (DPP,DENTSPLY,America) and mtwo gutta-percha points (VP,VDW,Germany).Volume differences method was used to determine the main components and the thermal conductivity determinator was used to measure the thermal conductivity of these dental gutta-percha cones.Furthermore,20 cones randomly selected from each kind of dental gutta-percha cones.And 10 cones of each dental gutta-percha cones,which were cut out the part of 4 mm in length from the apical end,were heated (200 ℃) from the upper end without compression,and the temperature of the gutta perchacones surface was monitored in time by the infrared thermal imager during the whole heating process.In addition,the rest of the 10 cones of each dental gutta-percha cones were used to obturate the root canal in the transparent root canal resin model using warm vertical condensation technique.The cross-sectional surface was observed by stereomicroscope (× 40) at 1 mm and 3 mm from the working length and the gutta-percha obturation area proportion was measured and analyzed.The data were analyzed by one-way ANOVA.Results:The proportion of inorganic fillers (80.90％ ± 1.14 ％) (P ＜ 0.05) and the thermal conductivity (2.247 ± 0.002)of DP was siguificantly higher than BP (79.28％ ± 3.88％,1.179 ± 0.003),DPP (68.46％ 5.09％,0.604 ±0.001),VP (78.86％ ± 1.87％,1.150 ±0.001) (P ＜0.05).During the thermal obturation without compression at the setting temperature (200 ℃),DP could achieve 65 ℃ beyond 1 mm from the heating point,and BP,DPP and VP only reached 65 ℃ within 1 mm.After warm vertical condensation obturation,all the groups showed increased gutta-percha obturation area proportion.At the position of WL-3,DP (96.89％ ±0.03％) showed significantly higher proportion of gutta-percha obturation area than BP (95.47％ ±0.06％),DPP (95.21％ ±0.03％) and VP (95.15％ ±0.03％) (P ＜ 0.05).Conclusion:DP contains more inorganic fillers,possesses higher thermal conductivity,and leads a better apical sealing ability than BP,DPP and VP at the position of WL-3 during warm vertical condensation obturation.

Objective To observe different priming techniques with intubation dose when using cisatracurium in onset time and safety. Methods Eighty ASA physical status Ⅰ and Ⅱ patients undergoing elective surgery requiring general anesthesia were enrolled. Group Ⅰ with 20 cases received cisatracurium 0.010 mg/kg, group Ⅱ with 20 cases received cisatracurium 0.015 mg/kg,group Ⅲ with 20 cases received cisatracurium 0.010 mg/kg,and group Ⅳ with 20 cases received normal saline. Four minutes after priming,group Ⅰ received cisatracurium 0.140 mg/kg ,group Ⅱ received cisatracurium 0.135 mg/kg, group Ⅲ received cisatracurium 0.190 mg/kg,and group Ⅳ received cisatracurium 0.200 mg/kg. Mechanomyography assessed the neuromuscular function of the adductor pollicis with train-of-four (TOF) supramaximal impulses T1. The trachea was intubated when the amplitude of T1 decreased to 0. Recorded T1 and TOF in 4 minutes and onset time of muscle relaxation, then evaluated intubation condition. Results The onset time in group Ⅰ , Ⅱ, Ⅲ and Ⅳ were (151.30 ± 10.90), (138.90 ±8.37), (145.45 ± 17.12), (148.75 ± 18.70) s,respectively. The onset time in group Ⅱ was obviously shorter than that in group Ⅰ , Ⅲ and Ⅳ (P ＜ 0.01 ),thus there was no significant differences among the group Ⅰ , Ⅲ and Ⅳ. During the priming interval, the value of T1 and TOF were both showing downtrend, in group Ⅱ ,there was TOF ＜ 90%. Conclusions Priming dose 0.010 mg/kg and intubation dose 0.140 mg/kg is just the same like that in intubation dose of quadruple ED95 whether priming. There is no benefit in priming cisatracurium of intubation dose quadruple ED95. There is TOF ＜ 90% in 4 minutes priming interval when using priming dose 30% ED95 and it is proved unsafely.