Aptamers are capable of binding a wide range of biomolecular targets with high affinity and specificity. It has been widely developed for diagnostic and therapeutic purposes. Because of unique three dimensional structures and cell-membrane penetration, aptamers inhibit virus infection not only through binding specific target, such as the viral envelope, genomic site, enzyme, or other viral components, but also can be connected to each other or with siRNA jointly achieve antiviral activity. Taking human immunodeficiency virus and hepatitis C virus as examples, this paper reviewed the effects and mechanisms of aptamers on disturbing viral infection and replication steps. It may provide an insight to the development of aptamer-based new antiviral drugs.

Objective To analyse the application status of antihyportensive drug among community elderly patients with hypertension in Gaomi city. Methods Based on the investigation data of antihypertensive application in communities, various manifestations and the causes of antihypertensive application in community elderly patients are summarized, and the improvement proposals are put forward. Results A total of 1487 elderly patients with hypertension were investigated, 332 of them were untreated, among 1155 patients who received drug therapy the irrational drug use ratio was 77.4%. The main factors that caused the rational use of antihypertensive drug include: patients paid little attention to hypertension , they usually had little knowledge of this disease, and they lacked of professional guidance, as well as other factors such as economic factors, adverse drug reactions, et al. Conclusions There are many problems consist in community hypertension drug therapy, and it is necessary to strengthen the work of community hypertension control.

The paper was aimed to review the modeling methods of spleen-yang deficiency, which can be classified into imitating traditional Chinese medicine (TCM) etiology methods and modern medicine methods. At present, methods of modeling were not generally accepted and the main presented problems were as follows. Modern medicine methods did not conformed to the rules of TCM etiology and pathogenesis. The evaluation of yang deficiency models was not accurate. Some modeling methods can lead to other diseases at the same time. The names of spleen deficiency model were not unified. It was difficult to distinguish the modeling methods of spleen-yang deficiency and spleen-qi deficiency, and etc. Model evaluation of spleen-yang deficiency was various. However, the domestic standard evaluation system had not been formed. The main model evaluation problems were as follows. Macro symptoms of the model lacked of objective and quantitative evaluation. It lacked of evaluation indexes of pulse and tongue with TCM characteristics. The disproof of prescription selection was not unified. Similar syndromes had not been ruled out. The microscopic indexes were fragmented, and etc. This paper reviewed on animal modeling methods of spleen-yang deficiency.

Objective To explore the epidemiological characteristics,clinical manifestations,diagnosis and treatment of Fasciola gigantica infection,and to provide reference for future diagnosis and treatment.Methods Four cases of confirmed Fasciola gigantica infection were analyzed retrospectively for epidemiological information,clinical manifestations,laboratory results,imaging findings,diagnosis and treatment outcomes.Results Four Fasciola gigantica infection cases were farmers from Binchuan County,Yunnan Province.All presented with fever,hepatalgia,percussion pain,hepatomegaly,eosinophilia,hyperglobulinemia,neutrophilia and anemia.Computed tomography (CT) scans showed multiple low density shadows scattered in the liver parenchyma.Eggs of Fasciola gigantica were detected in feces of the patients,and results of antibody against Fasciola gigantica detected by enzyme-linked immunosorhent assay (ELISA) were positive.Triclabendazole treatment was effective.Conclusion Human Fasciola gigantica infection is rare,without specific clinical manifestations,and triclabendazole is the first choice of treatment.

This paper introduces the development and application of health-related quality of life (HRQOL) scales in research on coronary heart disease (CHD). Currently, the scales for CHD patients have been more systematically developed and widely used in foreign countries, while domestically in China, they are developed successfully but problematically; research in this field has started later and the scales introduced are limited and not suitable for the entire range of domestic CHD patients. Thus, this paper introduces 26 HRQOL scales in research on CHD, including five generic scales, ten disease-specific scales from abroad and eleven scales originating from China. With the deficiency of HRQOL scales, especially that in traditional Chinese medicine and specific scales, this paper analyzes and summarizes the problems existing in development of scales. The authors also provide solutions in order to help the development and application of scales in further studies.

Objective To explore the association between SLC2A9,SLC17A3,ABCG2 single nucleotide polymorphisms and gout susceptibility in Quanzhou.Methods One hundred and fifty-four cases of gout patients and 160 healthy controls were selected,single nucleotide polymorphisms (SNP) of SLC2A9 SLC17A3,ABCG2 with tri-primer polymerase chain reaction (PCR) were tested and the relation between different genotypes and primary gout prevalence were analyzed.Results High risk genotype frequency of rs16890979 was 93.5％ and 70.0％ in patients and healthy people,respectively (the difference of genotype frequency between the two groups was statistically significant (x2=55.377,P＜0.01).High risk allele frequency was 79.9％ and 48.4％ in patients and healthy people,respectively (allele frequency in different population was statistically significant,x2=67.128,P＜0.01).High risk genotype frequency of rs2231142 was 68.8％ and 38.7％ in patients and healthy people,respectively (the difference of the genotype frequency was statistically significant,x2=29.129,P＜0.01);High risk allele frequency was 43.5％ and 23.4％ in patients and healthy people,respectively (the difference of allele frequency was statistically significant,x2=28.468,P＜0.01) ; rs1165205was a protective SNP,low risk genotype frequency was 42.2％ and 45.6％ in patients and healthy people,respectively (the difference of genotype frequency was statistically significant,x2=0.373,P=0.571); High risk allele frequency was 26.0％ and 28.1％ in patients and healthy people,respectively (the difference of allele frequency was not statistically significant,x2=0.270,P=0.364).Conclusion SNP loci rs16890979 of SLC2A9 gene and rs2231142 of ABCG2 gene can be used as genetic markers for primary gout susceptibility in the Quanzhou area,but SNP loci rs1165205 of SLC17A3 gene has little correlation with the prevalence of primary gout in Quanzhou residents.

BACKGROUND:Olfactory ensheathing cells (OECs) have been shown to possess the potential of repairing injured spinal cord, but their biological characteristics after transplantation in vivo are not well understood.OBJECTIVE: To investigate the migration of OECs after transplantation into the injured spinal cord of adult rats.DESIGN: Randomized and controlled experiment.SETTING: Department of Orthopedics, Guangdong Provincial People's Hospital; Experimental Animal Center of the North Campus of Sun Yat-sen UniversityMATERIALS: Totally 38 2-month-old male SD rats with body mass of (350 ±20) g were used in this study.METHODS: This experiment was conducted in the Experimental Animal Center, North Campus of Sun Yat-sen University between February 2004and May 2004. Two SD rats were used to extract the OECs, which were stained with Hoechst 33342. Totally 36 SD rats were subsequently randomized into 3 groups, namely rostral transplantation group, caudal transplantation group and control group with 12 rats in each group. The rats in the rostral and caudal transplantation groups subjected to operations to establish thoracic spinal cord injury model and OEC suspension was injected; in the control group, the rats were spared of thoracic spinal cord injury with only OEC suspension injection.MAIN OUTCOME MEASURES: Distribution of OECs in the spinal cord was observed under fluorescence microscope 1, 2, 4 and 6 weeks after operation, respectively.RESULTS: Of the rats in the 3 groups, 1 died in the rostral group, and 2in each of the caudal transplantation and control groups, leaving 29 rats for result analysis. The OECs in the rostral and caudal transplantation groups migrated longitudinally along the long axis of the spinal cord to a farthest distance of 8 mm and penetrating the scar tissues, but very few cells could reach the contralateral side. The OECs in the control group diffused locally without migration.CONCLUSION: OECs mainly migrate along the axons in white matter of the injured spinal cord, and their rostral and caudal migration does not differ in speed or amount. Only a small amout of OECs can across the transected gap of the spinal cord.

Objective To compare endovenous laser therapy (EVLT) with endovenous microwave coagulation (EMC) in the treatment of varicose vein in the lower extremities. Methods Sixty-five (male 30, female 35) patients with 70 lower extremities (35 legs in each treatment group) were pair matched according to age, gender and CEAP classification to receive endovenous laser therapy (EVLT) or endovenous microwave coagulation (EMC). The same surgeon performed all procedures. Patients were monitored on 72 hours, 4 weeks and 6 months after the procedure (by procedural site scored for bruising, skin burn, painful induration or trabes as well as a pain score), the cured extremities were examined via Duplex uhrasonography to evaluate the effects of the procedure. Results All these 65 patients (mean age, 47.52 years) completed treatment and were followed-up. The mean operation time of EMC group was less than that of EVLT (71±25 vs. 59±15, P=0.01). At 72 hour after the procedure, bruising scores and skin buring were significantly different (P<0.05): patients in the EMC group showed less bruising (17.14% vs. 54.29%) but more burn (48.57% vs. 20%) on the procedure site than the patients in the EVLT group. At 4 weeks and 6 months after the procedure, no significant differences were found between patient outcomes, physical conditions, and symptoms and or possible adverse events. In 20/28 patients the pigmentation faded away, Edema were relieved in all the 25 extremities. 4 patients with ankle ulcer were healed. No major complications were found. Conclusions Both EMC and EVLT were effective in treating lower extremities varicose veins, with no major complications.

Objective To investigate the operation key points, instrument improvement and shortterm effects in total en bloc spondylectomy (TES) via a single posterior approach for thoracic and lumbar tumors. Methods A series of modified instruments have been designed for the TES, including threadwire saw (T-saw) with a diameter of 0.81 mm, director and clamping for the saw, L shape and furcation osteotomes.The corpectomy of original TES which was defined as "one step dissection" from anteriorly to posteriorly, was modified into "two step dissection" which means that corpectomy was performed with saw cutting anteriorposteriorly and the L shape cutting posterior-anteriorly. In the cases with difficulty in pediculotomy using a T-saw, furcation osteotome was used for pediculotomy. Ten patients with thoracic or lumbar tumors were treated with the modified TES. There were 1 case of bone giant cell tumor, 1 case of bone neurilemmoma and 8 cases of metastatic tumors. All patients suffered moderate-severe pain and neurological deficit. Results The average follow-up period was 8.1(3.3-18.1) months. The average operating time was 7.8 h(6.0-10.3 h),and average blood loss was 2100 ml (1200-3500 ml). No disruption of dural mater, the leakage of cerebrospinal fluid, iatrogenic spinal cord injury and major vessel damage occurred. Two patients who underwent pleura disruption happened during the operation were treated with intrathoracic drain remedy. Among 7 cases with thoracic tumors, significant improvement in neurological function were achieved in 5 patients with the improvement of one grade in ASIA classification, while no change was found in 2 cases. In 3 cases with lumbar tumor, lumbar nerve root pain relieved and the muscle strength had recovered to grade 4 at least postoperatively. Conclusion Significant improvement has been achieved in the maneuverability and safety of the modified surgical techniques in TES with a single posterior approach for thoracic and lumbar tumors.

Objective To explore the epidemic characteristics,clinical features and treatment outcome of brucellosis in the Dali area of Yunnan province.Methods The clinical data of 43 cases with brucellosis from Janurany 2012 to September 2015 were retrospectively analyzed.Results Among 43 cases,there were 35 males,8 females, 37 farmers,5 veterinary,and 1 teacher.42 patients had a clear history of contact with cattle and sheep,1 case of no clear history of exposure to cattle and sheep,mainly fever,accompanied by chills,headache,joint pain,low back pain, weight loss,hepatosplenomegaly etc.Laboratory routine examination showed no specificity,SAT was detected in 30 cases,positive rate was 100.0%,blood culture in 28 cases,23 cases were positive,the positive rate was 82.1%. 41 cases of adult patients with rifampicin and tetracycline or doxycycline + levofloxacin and cefotaxime drugs combined therapy,treatment for 6 weeks,2 cases of children took rifampicin and SMZ -TMP treatment for 6 weeks, improvement rate was 100%,there was no recurrence and death cases.Conclusion Dali area is popular in brucellosis, the clinical manifestations and the infection way diversification,need the attention of the clinicians.