MicroRNAs ( miRNAs) play an important role in regulating various life activities .It has been confirmed that circulat-ing miRNAs are new biomarkers for the diagnosis of many diseases and closely related with their occurrence and progression .In recent years, miRNAs are found to exist stably in blood and other body fluids in forms of being encapsulated in microvesicle or binding with proteins.Their origins, existence forms and functions have become a hotspot of research in this field .This article reviews the recent studies on the origin , existence form and function of circulating miRNAs associated with cardiovascular disease , aiming to provide some evidence for miRNAs as the biomarker and target of cardiovascular disease .

Objective To observe the ultrastructure changes on von Ebner's gland of type 2 diabetes rats. Methods Eighteen Wistar rats were randomly divided into control group and experiment group.The diabetes rats model were induced by intraperitoneal injection streptozotocin(STZ) after high-fat food.The von Ebner's gland ultrastructure was observed under transmission electron microscope(TEM) after 8 weeks. Results Compared with the control group,in diabetes rats acinar cell nucleus appeared nucleolemma introcession and karyopycnosis;mitochondria exhibited vacuole degeneration and crista breaking;rough endoplasmic reticula expanded and showed degranulation.Conclusion A sereies of pathologic changes in von Ebner's gland of diabetes rats can be induced by diabetes,which provides morphological evidences for further investigation on the mechanism of diabetes complication.

AIM: To investigate the possibility of transfecting siRNA into rabbit cervical cells in transformation zone by the method of solid phase in vivo and to verify the effectivity of siRNA transfection by modifying the permeability of the cervical epithelium. METHODS: A sense strand small-interference RNA (siRNA) for human papillomavirus type 16 (21 bp) was designed and labeled with Cy3. siRNA-Lipo2000-carbomer gum was prepared. Twelve rabbits were included in the study and divided into experimental group and control group. In order to modify the permeability of cervical epithelium, hypertonic saline solution at concentration of 200 mmol/L was used to infuse the cervix in the experimental rabbits for 10 min, and normal saline was used for the control animals. The siRNA-Lipo2000-carbomer gum was applied to the surface of the rabbit cervix. Twenty-four hours later, the rabbits were sacrificed, and the cervix was isolated, cut into 2 parts, one part was for rapid frozen sectioning and the efficiency of transfection was observed under fluorescence microscope, another part was prepared by paraffin embedding and sectioning, and the form of cervical histiocytes was observed. Twelve SCID mice with SiHa cell cervical tumor, divided into experimental group and control group, were also used in the study. The mice in experimental group were treated with siRNA-Lipo2000-carbomer gum for 7 d. The control mice were treated with Lipo2000-carbomer gum only. Five days later, the mice were sacrificed and the tumor was collected, and the HPV16-DNA was measured by PCR. RESULTS: (1) Red fluorescence (Cy3) in cervical epithelium was observed in all rabbits. However, no different effect of siRNA transfection was found between the ways of modifying the cervical epithelium permeability. (2) No abnormal change such as flare, swelling and ulcer at all cervical tissue was observed, the cervical cell form was normal. (3) The titer of HPV16-DNA was decreased significantly after siRNA transfection (P<0.05). CONCLUSION: Transfection of siRNA into rabbit cervical epithelium in vivo is successful by using the method of solid phase and inhibits the processes of HPV-DNA, indicating that using RNAi is a practical way to treat HPV infection in human cercix and to decrease the incidence of cercical carcinoma.

Objective This study was designed to investigate positive rate of serum antibody and the distribution of serotypes of Legionella pneumophila in the patients of author's hospital for recent 5 years.Methods All the inspecting results of antibodies in the 1212 serums by indirect immunofluorescence from Jan 1, 2003 to Oct 31, 2007 were reviewed. The clinical information of patients was collected.Results 163 serums were positive (13.5%). Serotype 4 had the highest positive rate of 12.0% followed by serotype 12 (8.5%), 5 (7.8%), 14 (6.1%), 10 (5.9%). Three simultaneously positive serotypes were dominant (21.0%), and 4 or 5 simultaneously positive serotypes were common. In all departments, the highest positive rate (23.3%) was in respiratory ward, in which serotype 4 and 12 were the most (19.0% and 17.2%, respectively).Conclusions Serotype 4 was the most common type of Legionella pneumophila in serotype 1-14. Cross reaction could exist between Legionella pneumophila and other pathogenic microorganism or in different serotypes.

OBJECTIVE: To investigate and analyze the storage temperatures of drugs for references of drug storage. METHODS: A classified statistical analysis was conducted on those drugs with temperature requirements in storage as instructed in drug package inserts. RESULTS: The stock drugs totaled 1 254 kinds,of which,483 (38.52%) had the item of temperature requirements in storage,158 with room temperature storage and 61 with cold storage had the item of specific temperature requirement. CONCLUSION: The storage temperature of drugs should be established based on the quality of different drugs so as to ensure the stability of drug quality. It is advisable to clarify the storage temperature in all the drug package inserts.

Objective To investigate the changes and clinical significance of calcitonin gene related peptide (CGRP) and interleu-kin 1α(IL-1α) before and after warm acupuncture therapy in the patients with lumbar disc herniation (LDH ) .Methods Serum CGRP and IL-1αcontents were detected before and after the warm acupuncture therapy in 60 cases of lumbar disc herniation and 15 healthy control cases by ELISA method for conducting the statistical analysis .The changes of the McGill pain scores and serum CGRP and IL-1αconcentrations before and after the warm acupuncture therapy were observed .Results The McGill pain scores af-ter the warm acupuncture therapy in the LDH patients were significantly decreased ,the difference was statistically significant (P<0 .01) ,and serum CGRP and IL-1α concentrations were significantly decreased ,the difference was statistically significant (P<0 .01) .Conclusion CGRP and IL-1αcan be used as the observation index of the effects for the warm acupuncture therapy in trea-ting LDH ,which can provide the basis for the conservative treatment of LDH .

Objective To investigate the concurrent application value of indirect immunofluorescence (IIF) and enzyme-linked immunosorbent assay (ELISA) in systemic lupus erythematosus (SLE).Methods A retrospective study.All patients who took anti-double stranded DNA (dsDNA) antibody test from June 1 2011 to September 30 2011 in our department were recruited in this study.The patients' anti-dsDNA antibody results and clinical diagnosis were collected and analyzed retrospectively.The consistence,sensitivity and specificity of IIF and ELISA tests were calculated and the consistence was compared by Kappa test.Results The positive rates of detecting anti-dsDNA antibodies by ELISA and IIF tests were 16.3％ and 13.1％ respectively.The consistency between these two tests was 90.8％,and showed good correlation by Kappa test (Kappa =0.641,P ＜ 0.05 ).Of 9.2％ of inconsistent results between IIF andi ELISA,most cases ( 6.2％ ) were ELISA positive and IIF negative.Taking the clinical diagnosis of lupus as a golden standard,the accuracy of IIF and ELISA was 84.8％ and 84.4％ respectively and the difference was no significant (x2 =0.25,P ＞ 0.05 ).The sensitivity and specificity for diagnosing lupus by IIF were 46.1％ and 99.2％,and 51.3％ and 96.7％ by ELISA.Conclusions Our results suggested that anti-dsDNA antibodies in samples should be detected by both ELISA and IIF tests simultaneously.If ELISA was used first and the positive samples were further tested by IIF,at least 3％ of ELISA negative and IIF positive samples would be misdiagnosed as anti-dsDNA antibodies negative.IIF negative and ELISA positive samples should be further analyzed the affinity of anti-dsDNA antibodies in order to help the diagnosis and evaluation of SLE.

Objective Corneal alkali burn is a major cause of corneal neovascularization ( CNV) .Confocal microscopy was used to observe the therapeutic effects of KH902 eye drops for the treatment of corneal alkali burns. Methods 24 adult rabbits were randomly divided into two groups( n=12) , alkali burn model being established:experimental group by KH902 eye drops and control group by saline solution 3 times a day.Confocal microscopy was given at 3, 7, 14, 28 d post-operatively (po). Results Corneal epithelium deletion or vacuolar necrosis was found at 3 d po, along with stromal edema.There was no obvious inflammatory cell or no immunocyte infiltration.No difference was found in the corneal structures between two groups.CNV appeared in the peripheral stroma in both groups at 7d po.Inflammatory cell infiltration was more severe in the limbus and peripheral sections in control group than in control group.At 14 d po, inflammatory cells declined gradually and CNV took shape.At 28 d po, scarring and decreased inflammatory cells were found in both groups, while the experimental group had fe-wer and smaller blood vessels than the control group.As to the area of CNV, it was respectively (35.42 ±6.40) mm2, (60.23 ±5.35) mm2, (60.23 ±5.35)mm2 at 7, 14, 28d po in control group, statis-tical difference being found among different time points(P<0.05).While in experiment group, the area of CNV was respectively (22.11 ±5.45)mm2, (31.62 ±7.19)mm2, (28.54 ±3.01) mm2at 7, 14, 28 d po without statistical difference.(P>0.05).The CNV area in experiment group is significantly less than that in the control group at 14 d and 30 d po(P<0.05).The inflammatory cell density in control group was respectively (74.21 ±9.33)mm2, (1883.39 ±43.11)mm2, (2532.10 ±98.00)mm2, (723.05 ± 23.34)mm2at 3,7, 14, 28 d po, and (58.0 ±10.22)mm2, (656.90 ±33.01)mm2, (432.32 ±60.11)mm2, (122.11 ±30.37) mm2respectively at 3,7, 14, 28d po in experiment group, significant difference was found at different time points in both groups(P<0.05), among which significant decreased inflammatory cells was found in experiment group compared with control group (P<0.05). Conclusion KH902 eye drops can be used for the inhibition of CNV and inflammatory cell infiltration after alkali burn.

ObjectiveTo observe the efficacy of acupuncture plus acupoint injection in improving the depression state and quality of life (QOL) in patients with depression after ischemic stroke (syndrome differentiated as blood stagnation obstructing collaterals).MethodAccording to the inclusion and exclusion criteria, the eligible subjects were enrolled and randomized into a treatment group and a control group. The treatment group was intervened by acupuncture plus acupoint injection, while the control group was by oral administration of Fluoxetine. They were evaluated by using the Hamilton Depression Scale (HAMD) and Barthel Index (BI) before treatment and after 2-month treatment.ResultAfter 2-month treatment, there was no significant difference in comparing the anti-depressionefficacy between the two groups (P>0.05). The BI score of the treatment group was significantly better than that of the control group after 2-month treatment (P<0.05).ConclusionAcupuncture plus acupoint injection is effective in improving the depression state in the patients with depression after ischemic stroke (syndrome differentiated as blood stagnation obstructing collaterals); after 2-month treatment, it can produce an equivalent therapeutic efficacy compared with oral administration of Fluoxetine.Acupuncture plus acupoint injection is superior to the control in improving the QOL of the patients.

OBJECTIVE To investigate the disinfectant-resistant gene qacE△1-sul1 in Pseudomonas aeruginosa isolated from burned patients. METHODS GNS-448 and K-B tests were performed to detect the susceptibility of 19 kinds of antimicrobial agents against these strains. Genotype was analyzed by polymerase chain reaction(PCR) and verified by DNA sequencing. RESULTS The 32 strains isolated were all resistant to ampicillin,cefuroxime,cefoxitin,SMZ/TPM. The sensitive rates to amikacin and gentamicin were 68.0%,and 46.9%,respectively,the resistant rates to imipenem and meropenem were 68.8% and 59.4%,respectively. The positive rate of gene qacE△1-sul1 was 50.0%. CONCLUSIONS The resistance of P. aeruginosa isolated from burned patients is a serious issue.There is high positive percentage of qacE△1-sul1 gene in P. aeruginosa isolated from burned patients.