Objective To study the mechanism of 308 nm excimer laser combined with piperine activated the production of melanin in amelanotic melanocytes in outer root sheath of hair(AMMC) ,and promote the expression of TRP‐1、TRP‐2 protein . Methods AMMC were in incubated for 24、72、120 h in different groups(combination therapy group ,the 308 nm excimer laser group ,the piperine group ,the positive control group and the control group) .Then the melanin content was measured .The expres‐sion change of TRP‐1 and TRP‐2 in cells were observed by laser scanning confocal microscopy .Results Four groups increased the AMMC cellular melanin content .Four different groups could promote melanin content at different degrees .The combination therapy group played the strongest role in promoting function .And the function was the most obviously in 24 h ,it also was concentration dependent .0 .5 mmol/L piperine in combination group and piperine group could produce promoting effect of within 72 h on the ex‐pression of TRP‐1 ,but its role was not evident in the expression of TRP‐2 .308 nm excimer laser had effects both on TRP 1 and TRP 2 .Conclusion 308 nm excimer laser combination with piperine can increase the activation of amelanotic melanocytes in outer root sheath of hair .

OBJECTIVE: To establish the HPLC fingerprints of the freeze-dried Xueshuantong for injection.METHODS: The HPLC chromatographic column was Zorbax SB-Aq-C18(250 mm?4.6 mm,5 ?m) and the mobile phase consisted of acetonitrile-water for gradient elution.The UV detection wavelength was set at 203 nm.RESULTS: There were 13 mutual peaks in the HPLC fingerprints of the freeze-dried Xueshuantong for injection.The relative retention time and relative peak area ratio of the fingerprints in which ginsenosides Rg1 served as internal standard were obtained.The area of non-mutual peaks represented no more than 5% of total peak area.CONCLUSION: The method is simple and reliable and it is applicable for the quality control of the freeze-dried Xueshuantong for injection.

Despite of great advances in drug management of heart failure in the past ten years,the condition remains a major public health issue,with high prevalence,poor clinical outcomes.Treatment of established systolic chronic heart failure includes agents that block the renin-angiotensin-aldosterone and sympathetic nervous systems to prevent adverse remodelling,to reduce symptoms and prolong survival.Diuretics,Vasodilator and Digoxin are often used to improve sign,with no influence on prognosis.Pharmacological agents aimed at new targets on clinically relevant endpoints are going under investigating.

Visualization technology is more and more widely used in clinical anesthesia.Nerve block in pediatric anesthesia assisted by visual technique of ultrasound not only achieved the similar curative effect as traditional blind operation but also had lower incidence of complications,so this technology is more and more useful in pediatric anesthesia.This article reviewed the progress of the application of ultrasound guided nerve block in pediatric anesthesia.

Objective To observe the effect of Melodic Intonation Therapy on severe aphasia.Methods Additionally to the stimulus therapy,familiar songs were used in the treatment of listening,retelling and naming in 12 cases.Results The patients showed improvement in listening,retelling and naming.Conclusion Using familiar songs in the treatment can promote the recovery of aphasic patients.

Objective To develop self-management behavior assessment scale for chemotherapy patients with peripherally inserted central catheter (PICC),and test the validity and reliability of it.Methods In reference to Chronic Disease Self Management Study Measure and its scoring standard by patient education and study center of American Stanford University,in combination with PICC patient self-management content,with reference to the literature,expert assessment,the self-management behavior assessment scale was established.The scale included five dimensions,19 quantitative indicators,a total of 78 entries.From February 2010 to November 2011 192 cases of breast cancer chemotherapy patients with PICC participated in the survey.Results Effective questionnaire was 178 copies,scale of content validity index (CVI) was 0.906,the overall Cronbach alpha coefficient was 0.892.Using factor analysis method,4 common factors were extracted whose characteristic root was greater than 1,and could explain 41.180％ of the total variance,each item on the corresponding factor of load was above 0.3.Conclusions The evaluation scale has good validity and reliability,which can provide researchers with a tool to evaluated and intervene with self management behavior of breast cancer chemotherapy patients with PICC.

Objective To explore the mechanism of macro-reentry atrial tachycardia and to guide catheter ablation using electroanatomic mapping system in 3 patients.Methods Three patients(two females),aged 51?12 years,with atrial tachycardia were included.The mean history of symptom was 19?11 years.Conventional electrophysiological study was performed to determine the location of atrial tachycardia before the three dimensional geometry reconstruction.After voltage and activation maps were constructed,the mechanism of tachycardia was analyzed and the slow conduction areas(critical isthmus) were verified.Radiofrequency energy was delivered using irrigated-tip catheter.Results Though there was no evidence to suggest structural heart diseases,scar areas were found in the mapped atria in all the three cases.The mechanism of atrial tachycardia was found to be counter-clockwise macro-reentry around tricuspid valve,counter-clockwise macro-reentry around superior vena cava,and figure "8" reentry in left atria in the 3 patients respectively.The respective critical isthmus was found to be between the lateral scar and tricuspid valve,the lateral scar and superior vena cava,and two scars on the left atria roof.Ablation in the critical isthmus terminated all tachycardia.There were no atrial tachycardia recurrence during a follow-up of 9-10 months.Conclusion The substrate and electrophysiological mechanism of macro-reentry atrial tachycardia could be identified clearly,and navigation ablation could be performed effectively under the guidence of electroanatomic mapping.

Ovarian neoplasms,composed predominantly or exclusively of small round cells with scant cytoplasm,is relatively rare.However,there is a wide range of differentiation,and pathologists often struggle to make a correct diagnosis because of its overlapping histological features.Perhaps the best known neoplasm of this kind is ovarian small cell carcinoma of the hypercalcemic type,which may be confused with a wide range of neoplasm from sex cord-stromal tumor to neoplasm in the family of small round blue cell tumor to various undifferentiated malignancies.Small cell carcinoma of the pulmonary type may also arise from the ovary,and this may be a component of a typical ovarian surface epithelial-stromal tumor.Other small cell neoplasm that may arise within the ovary or involve the ovary includes intra-abdominal desmoplastic small round cell tumor,metastatic small cell carcinoma,peripheral primitive neuroectodermal tumor,and endometrial stromal sarcoma.In this review,the morphologic features of some of these neoplasms are described,as well the value of immunohistochemistry and other ancillary techniques in establishing a diagnosis.

Objective:To establish the technique for T lymphocytes inducted and differentiated by using human hematopoietic stem/progenitor cells ex vivo and to provide a technological platform for studying T cells biological characteristics and cellular immune.Methods:Human CD34-positive cells were isolated from umbilical cord blood by using a high-gradient magnetic cell sorting system(MACS) and CD34+ cells were seeded on human fetal thymic stromal monolayer system.Liquid culture system contains hematopoietic cytokines(FL+IL-12+IL-7+IL-2) and 20% human AB serum.Non-adhension cells were obtained after 7?14?28?35?42 days of culture respectively to analysis T cells phenotype by FACS using T cells specific monoclonal antibody.T cells morphology were also studied.Results:After 2 weeks of culture CD4+CD8+ immature T lymphocytes wre about 0 3%～13 3% and the peak value is 16 6%～26 5% at 4～5 weeks of culture.CD4-CD8+ and CD4+CD8- T cells that coexpressed CD3 cells increased at 26 5%～64 9% and 11 6%～38 9% after 6 weeks of culture.Wright staining shows that the mature T cells harvested after mitogenic stimulation have the presence of large cells with lymphoblast morphology.Conclusion:Human umbilical cord blood CD34+ cells could be differentiated into T lymphocytes by the culture conditions of human fetal thymic stromal monolayer system and the cytokine combination of FL+IL-12+IL-7+IL-2,and the T cells can be stimulated by IL-2+PHA.

Objective To investigate the significance of the mutation of c-kit gene in the development,(clinical) pathology and prognosis of gastrointestinal stromal tumors(GISTs).Methods The technique of(PCR-SSCP) was used to detect ckit gene mutation in 106 cases of GIST,and 57 of the cases were(followed-up).Results The c-kit gene mutation rate in the whole group was 45.3%(48/106),and(3.4)%(2/41) in benign GIST,and 70.8%(46/65) in malignant GIST.The 1-,3 and 5-year survival rates and median survival time of the mutation positive group were all markedlly lower than those of the(mutation) negative group.A comparison of the parameters that can differentiate the benign GISTs from malignant ones such as size,histological necrosis,aggressive grade,nucleus mitotic count and nuclear discrepancy,showed significant difference between the of postive and negative gene mutation(P