BACKGROUND: Cecropins are a kind of micromolecule protein with antibacterial activity. Eukaryotic cell-expressed or artificially synthesized Cecropins is characterized by low efficiency and high cost. OBJECTIVE: To clone and express an antibacterial peptide gene of Musca domestica Cecropin A, and to identify recombinant expression product. METHODS: Mature Musca domestica Cecropin A encoding nucleotide sequence was searched from the GenBank and amplified by RT-PCR. The gene of Musca domestica Cecropin A was cloned into prokaryotic expression vector pET32a and fused with gene of Thioredoxin (Trx) and expressed in E.coli BL2l (DE3). After induction by isopropyl-β-D-thiogalactoside, the sera of the immunized rabbits were collected after rabbits were immunized with the hemolymph of housefly larvae. Recombinant protein was identified by western blot analysis and N-[Tris(hydroxymethyl)methyl]glycine-sodium dodecylsulfate-polyacrylamide gel electrophoresis.RESULTS AND CONCLUSION: After induction by isopropyl-β-D-thiogalactoside, E.coli BL21 expressed mature Cecropin. Rabbit anti- housefly larvae sera, N-[Tris(hydroxymethyl)methyl]glycine-sodium dodecylsulfate-polyacrylamide gel electrophoresis and western blot analysis results confirmed that expression products were mature Cecropin. These suggest that prokaryotic expression system can be utilized to obtain natural mature Cecropin.

Objective: To observe the clinical effects of needling acupoints Shenting(GV 24),Neiguan(PC 6) and Sanyinjiao(SP 6) in the treatment of migraine. Methods: Thirty cases of Germen patients with migraine were treated mainly by Shenting(GV 24), bilateral Neiguan(PC 6) and Sanyinjiao(SP 6), as well as bilateral Hegu(LI 4) and Taichong(LR 3), Touwei(ST 8),Yangbai(GB 14), Cuanzhu(BL 2), Sizhukong(TE 23), Shuaigu(GB 8) and Sibai(ST 2) in the affected side of head, auricular Sympathetic (MA-AH 7), Er Shenmen (MA-TF 1), Heart (MA-IC) and Endocrine (MA-IC 3); another 28 cases were treated by routine acupuncture. The clinical results and immediate pain-relieving effects were observed. Results: The total effective rate was 90.0% in treatment group and 75.0% in control group, χ2= 4.57, P ＜ 0.05; the 24-hour pain-relieving effects were obviously better in treatment group than that in control group, χ2 = 10.11, P＜ 0.01. Conclusion: Needling Shenting(GV 24), Neiguan (PC 6) and Sanyinjiao(SP 6) has better effects than routine acupuncture in the treatment of migraine.

MicroRNA (miRNA) regulate the expression of target mRNA according to the specific base pairing. They are involved in proliferation,differentiation and apoptosis of cells. The expression of miRNA has distinct differences between normal tissues and cancers, miRNA can be oncogenes but also suppressor genes, they play an important role in cancer. And miRNA are promising to be a new therapeutic target. In this review, we will discuss the advance in the research of miRNA in cancer.

An analytical method of reversed phase high performance liquid chromatography (RP-HPLC) was developed for simultaneous determination of 5-hydroxymethylfurfural and nine phenolic compounds (including (+)-catechin, (-)-epicatechin, chlorogenic acid, rutin, caffeic acid, protocatechuic acid, syringic acid, ferulic acid and p-coumaric acid) in 20 min.Ten components were detected and separated successfully by Diamonsil C_(18) column (150 mm x4.6 mm, 5 μm) at wavelength of 280 nm and column temperature of 42 ℃, with acetonitrile and 3% acetic acid solution as the mobile phase in gradient elution.The resultant correlation coefficients of the ten compounds were between 0.9911 and 0.9995 with detection limit from 0.2 to 0.5 mg/L, the RSD less than 2.4% and the average recoveries from 89.4% to 98.3%.These experimental results demonstrate that 5-hydroxymethylfurfural and the nine phenolic compounds in different rice wine samples can be determined with the new method for practical uses.

In recent years,nano - materials have represented the superior biocompatibiliry and the arena of medical nano - materials have been extensively studied by various means all over the world. Is it possible that nano - bone implants overcome the existing limitations of the traditional bone implants for fusing operations in the future? State Food and Drug Administration (SFDA, CN) authorized the nano-bone implants- - nHA/ PA66 (YZB/0063 -2003) in 2005 but there were still lots of counterviews in this field. This review considers the advanced researches via comparing and analyzing the correlatire literatures recently.

Lung cancer is the most common cancer worldwide, accounting for approximately 18%of all cancer-related deaths. Circulating tumor cells (CTCs) have the capacity to spread into the blood stream. This capacity of CTCs is one of the most critical fac-tors for unfavorable clinical outcome of patients with NSCLC. Detection of CTCs using a simple blood test may assist in early detec-tion of lung cancer. Researchers have attempted to isolate CTCs from peripheral blood using various techniques. Although reports on CTC detection are abundant, methodological aspects concerning sensitivity, specificity, and reproducibility have prevented a clear ap-praisal of the clinical impact. This paper gives a brief description of each CTC detection method.

Objective:To observe whether the in-flow anesthetic gas absorber can reduce the recovery time after stopping inhalation of enflurane or isoflurane. Methods: In fixed tidal volume, minute volume and fresh gas flow, the recovery time of isoflurane or enflurane anesthesia with or without in-flow anesthetic gas absorber were compared after closing the vaporizer.Results: With in-flow anesthetic gas absorber, the time for anesthetic gas concentration in circle to reduce the MAC to 0.3was 3.3±0.5 min for isoflurane, which was significntly shorter than that without absorber (20±0.3min) ( P＜0.01 ) and the time for enflurane was 3.5±0.5min and 25±0.1min respectively. Conclusion:Anesthetic gas absorber can reduce the recovery time of either enflurane or isoflurane inhalational anesthesia significantly.

ObjectiveTo investigate the clinicalefficacy of warm needling plus Chinese herb fumigation in treating plantar fasciitis.MethodSixty-one patients with plantar fasciitis were randomly allocated to a treatment group of 31 cases and a control group of 30 cases. The treatment group receivedwarm needling plus Chinese herb fumigation and the control group, warm needling alone.ResultThe total efficacy rate and the cure rate were 100.0% and 61.3%, respectively, in the treatment group and 96.7%and 40.0%, respectively, in the control group. There was no statistically significant difference in the total efficacy rate between the two groups (P>0.05), but the cure rate was significantly higher in the treatment group than in the control group and there was a statistically significant difference between the two groups (P<0.05). There was a statistically significant pre-/post-treatment difference in the VAS score in the two groups (P<0.01), indicating that both the groups had a good analgesic effect. There was a statistically significant post-treatment difference in the VAS score between the treatment and control groups (P<0.01), indicating that theanalgesic effect was better in the treatment group than in the control group.ConclusionThe efficacy of warm needling plus Chinese herb fumigation is better than that of warm needling alone in treating plantar fasciitis.

Objective To learn the prevelance of Acinetobacter baumannii and its drug resistance related with Ⅰ class integron. Methods 22 kinds of antibiotics commonly used in our hospital were used to detect the sensitivity of the clinically separated Acineto-bacter baumannii.Methods PCR was used to detect Ⅰ class integron enzyme gene of Acinetobacter baumannii,and then parts of variable region of Ⅰ class integron enzyme gene were amplified and analyzed for gene sequence.Results The drug resistance of Acinetobacter baumannii phenomenon was very serious,which was multiple drug resistance.The resistance rate of Acinetobacter baumannii to CPZ/SB was 1.2%.And the resistance rates to tigecycline,ofloxacin,imipenem,biapenem,and amikacin were 1 5.4%-69.5%,but the resistance rates to other antibiotics were above 71%.There were 72 of 102 strains including Ⅰ class integron (positive rate was 70.2%).The resistance of strains with Ⅰ class integron was stronger than that of the strains without.The varia-ble area of Ⅰ class integron produced the same enzyme bands when analyzed with double enzyme,suggesting the Acinetobacter bau-mannii was homologous.The gene sequence analysis of Ⅰ class integron showed that the Ⅰ class integron of the Acinetobacter bau-mannii carried kinds of resistant genes such as aacA4,catB8 and aadA13.Conclusion From 2010 to 2013,the Acinetobacter bau-mannii in our hospital is highly resistant to cephalosporins,broad-spectrum penicillin,aminoglycosides and fluoroquinolones and is severely multiple drug resistant.So the antimicrobial drugs for the treatment of infections caused by Acinetobacter baumannii are limited.Ⅰ class integron is closely related to the multiple drug resistance of Acinetobacter baumannii.

ObjectivesTo observe correlation between serum vitamin A status and prevalence or severity of NRDS. MethodsRecruited into this study were 166 preterm infants admitted to our neonatal department. The serum concentration of vitamin A was measured, and the prevalence of NRDS at different levels of vitamin A was compared. According to the clinical manifestation and X-rays, there were 30 infants diagnosed as NRDS. Another 30 patients from the rest 133 infants without NRDS were randomly selected as control group according to the gestational ages, then the difference between NRDS group and control group were observed according to gestational ages. The 30 preterm infants with NRDS were divided further into mild group (in-cluding stagesⅠandⅡ,n=18) and severe group (including stageⅢ andⅣ,n=12) according to ifndings chest X-ray, then the difference between these two groups were observed.ResultsIn the 166 preterm infants recruited, 65/166 had serum vitamin A lower than 0.35 μmol/L, in which 14/65 (21.54%) were NRDS patients. Another 93/166 patients had serum vitamin A ranged from 0.35 μmol/L to 0.7 μmol/L, in which 15/93 (16.13%) were NRDS patient. The rest 8/166 had serum vitamin A higher than 0.7 μmol/L, in which 1/8 (12.50%) were NRDS patient. However, the differences between each two groups were not signiifcant. When gestational ages ranged from 34 to 37 weeks, the serum concentrations of vitamin A of NRDS group were lower than that in controls (P<0.05). No signiifcant difference between the serum concentrations of vitamin A and the severity of NRDS were ob-served (P>0.05).ConclusionsThe prevalence of NRDS for those preterm infants lacking of vitamin A was tended to increase. And the late preterm infants (34 w≤ GA <37 w) with vitamin A deifciency are prone to NRDS.