Objective To evaluate the safety,feasibility and efficacy of emergency percutaneous coronary intervention(PCI)on the spot in the patients with acute myocardial infarction(AMI)in country hospitals by interventional cardiologists from higher-level hospitals(converse transport).Methods A total of 81 AMI patients received emergency PCI on the spot by interventional cardiologists from other higher-level hospitals (transported doctors)from Mar 2004 to Sep 2008 in our hospital.The mean age of patients was 68.6 ± 3.6 years (36.0-83.0 years).Forty-six patients were male and 35 were female.There were 56 cases with anterior myocardial infarction and 25 with inferior myocardial infarction(including 11 cases combined with right ventricular infarction).The average time from symptom onset to admission was 6.2 ± 1.8 hours(2.0-12.0hours).Results Three cases were transported to higher-level hospitals for CABG because of severe conditions.The other 78 cases received emergency PCI on the spot,among whom 66 cases received primary PCI.Another 12 cases received rescue PCI.Eight one stents were implanted in total into the infarcted arteries.One operation was failed because the balloon could not go through the lesion.The success.rate was 98.7％.Four patients occurred peri-operative cardiac adverse events and 2 cases died.Four cases died during the 32-86 months follow-up,of whom I was cardiac death and 3 was non-cardiac deaths.No fatal cardiovascular events occurred in the remained cases.Conclusion Emergency PCI on the spot by interventional cardiologists from other cities(converse transport PCI)in AMI is safe,feasible and effective.But it needs to be confirmed in a large-scale study in the future.

Objective To understand the impact of Qionghai Lake wetland ecological protection construction on the preva?lence of schistosomiasis,so as to provide the evidence for formulating the strategies for schistosomiasis control and prevention. Methods A retrospective survey of the construction of Qionghai Lake wetland was performed,and eleven villages around the wetland were surveyed for schistosomiasis endemic situation. The influence of the wetland project on the schistosomiasis preva?lence and Oncomelania hupensis snail status were investigated. Results Before the construction of Qionghai Lake wetland,the snail elimination and extended chemotherapy for residents was performed. After the project was finished,the roads and ditches were hardened. From 2009 to 2014,the schistosome infection rate of residents declined from 0.37% to 0. No schistosome infect?ed snails were found and in recent 2 years,no snails were found. No mice were infected in the sentinel tests. Conclusions The construction of Qionghai Lake wetland effectively eliminates snails,and interrupts the transmission of schistosomiasis. Howev?er,the environment of the wetland is more suitable for snail breeding,and therefore,the surveillance still should be strength?ened.

The resident infection rate of schistosomiasis in Xinnong Village,Chuanxin Town,a national surveillance site of schistosomiasis.decreased to 0.14% in 2008.which suggested that the surveillance site reached the criteria for trammission control.

Objective To evaluate the intervention effect of Yi?Han bilingual health education of schistosomiasis control. Methods Baimiao Village in Daqing Town,Xichang City,where Yi Nationality inhabited,was chosen as a pilot to carry out Yi?Han bilingual health education of schistosomiasis control from 2012 to 2015. The villagers and students in the pilot area were in?vestigated by questionnaires before and after the intervention to understand their awareness and correct behavior status on schis?tosomiasis control. Results After the intervention of Yi?Han bilingual health education of schistosomiasis control for 3 years, the awareness rate and the correct rate of behavior on schistosomiasis control of the villagers in the pilot area improved from 45.79%and 51.12%in 2012 to 97.80%and 98.78%in 2015. As for the students,the two rates mentioned above improved from 64.16%and 60.83%in 2012 to 100%and 98.89%in 2015 respectively,and all the differences between the rates before and af?ter the intervention were statistically significant( all P<0.01). Conclusion The intervention of Yi?Han bilingual health educa?tion of schistosomiasis control can obviously improve the knowledge awareness rates and the correct rates of behavior of the resi?dents and students in the gathering area of Yi Nationality.

Objective To study the effect of positive lymph node number on the survival of patients with esophageal carcinoma. Methods From July 1995 to July 2005, a total of 11,447 resected lymph nodes were obtained from 1140 patients who underwent curative resection of the primary tumor with systematic lymphadenectomy at Shanxi cancer hospital. The survivals were analysed by life tables and Kaplan-Meier methods, the related factors of lymph node metastasis were assessed by Chi-square test. Results The number of positive lymph nodes was negatively related to survival rates of esophageal carcinoma. According to the number of lymph nodes resected (≥8 nodes versus <8 nodes), there was significant difference in metastatic lymph node ratio. Conclusion The number of positive lymph node can reflect the prognosis of patients better. The authors suggest that the modification of the tumor-lymphnode-metastasis (TNM) staging classification (TNM) to include the number of positive lymph nodes in the N1 category.

Objective:To construct the Escherichia coli (E. coli)expression system for preparation of the bone morphogenetic protein-2 (BMP2)with collagen-binding domain (CBD),and to study the methods and conditions for expression, purification and renaturation of CBD-BMP2.Methods:CBD sequence was cloned into the N-terminal of BMP2 sequence, the recombinant vector pet21b/CBD-BMP2 was constructed and transformed into E.coli BL21.The expression of recombinant protein was induced using isopropylβ-D-thiogalactopyranoside (IPTG) at 37 ℃.Ni-NTA chelate chromatography was used to purify CBD-BMP-2.Denaturing CBD-BMP2 was refolded by dilution method using ultrapure water.The refolding CBD-BMP2 was filtered through a 0.22μm microfiltration membrane for degermation.The recovery rate was calculated by the ratio of the protein concentration before and after degermation. The expression, purification, and renaturation of recombinant protein were detected by SDS-PAGE method.The concentration of CBD-BMP2 was detected by BCA assay.Results:The recombinant vector pet21b/CBD-BMP2 was successfully transformed into E.coli BL21,and the recombinant protein was expressed as inclusion bodies in E.coli.The SDS-PAGE results showed denaturing protein was dissolved in supernatant of lysis buffer with 8 mol·L-1 urea and the purified recombinant protein existed in elution buffer B with relative molecular mass about 14 000.Two bands (14 000 and 28 000)were seen in the SDS-PAGE picture,which indicated that the monomer was successfully refolded into dimer by dilution method.The concentrations of recombinant protein before and after degermation were 110 and 80 mg · L-1 , respectively, and the recovery rate was about 73%. Conclusion:The recombinant vector pet21b/CBD-BMP2 is transformed into E.coli BL21 successfully,and the recombinant CBD-BMP2 is expressed and refolded efficiently. The methods of prokaryotic expression system for preparing recombinant CBD-BMP2 protein are established.

Objective:To investigate the expression of miRNA-372-3p (miR-372-3p) in gastric cancer tissues and cells and the regulation of RAB22A protein as well as its effect of miR-372-3p on the biological function of gastric cancer cells.Methods:The expression levels of miR-372-3p in cancer tissues of 70 patients clinically diagnosed with gastric cancer and the pericarcinomatous tissues were detected by using real-time quantitative polymerase chain reaction (RT-PCR) from Shanxi Provincial Cancer Hospital between December 2018 and December 2019. miR-372-3p inhibitor was transfected in gastric cancer MGC-803 and SGC-7901 cells, and miR-372-3p NC (empty vector) was used as the control. The colony formation, proliferation and apoptosis of gastric cancer cells were detected by using the clone formation assay, CCK-8 method and flow cytometry, respectively. Dual-luciferase reporter gene assay was used to detect the expression correlation between miR-372-3p and RAB22A of MGC-803 cells. miRNA-21 (miR-21) was treated as the negative control, and Western blot was used to detect the expression of protein RAB22A in MGC-803 and SGC-7901 cells when miRNA-21 (miR-21) was treated as the negative control.Results:RT-PCR results showed that the mRNA relative expression level of miR-372-3p was up-regulated in gastric cancer tissues compared to their adjacent normal cancer tissues, and the difference was statistically significant (0.51±0.37 vs. 0.77±0.48, t = 1.98, P = 0.005). There were statistically significant differences in mRNA expression level of miR-372-3p in gastric cancer tissues with different tumor diameter and pathological grade (all P < 0.05). The assay in vitro showed that the low expression of miR-372-3p could inhibit the clone formation of MGC-803 and SGC-7901 cells [(211±4) vs. (410±5), t = 2.78, P = 0.001; (244±8) vs. (423±7), t = 2.76, P = 0.001], cell proliferation activity (absorbance value of MGC-803 cells for 48 h: 0.39±0.06 vs. 0.57±0.03, t = 3.18, P = 0.01; absorbance value of MGC-803 cells for 72 h: 0.50±0.05 vs. 0.81±0.06, t = 2.78, P < 0.01; absorbance value of SGC-7901 cells for 72 h: 0.50±0.09 vs. 0.79±0.09, t = 2.77, P = 0.01) and increase the early apoptosis rate of MGC-803 cells [(25.19±0.26) vs. (20.02±0.04), t = 4.30, P < 0.05]. Dual-luciferase reporter gene assay found that compared with the cotransfection of miR-372-3p NC and RAB22A wild type gene, the luciferase activity of MGC-803 cells was decreased after the cotransfection of miR-372-3p inhibitor and RAB22A wild type gene, and the difference was statistically significant [(1.00±0.04) vs. (0.53±0.06), t = 3.18, P = 0.01]. Western blot results showed that knockdown of miR-372-3p could inhibit the expressions of MGC-803, SGC-7901 cells and RAB22A protein. Conclusion:The expression of miR-372-3p in gastric cancer tissues is up-regulated, and miR-372-3p can promote the expression of RAB22A and regulate the occurrence and development of gastric cancer. It may be a potential therapeutic target.

Objective To evaluate the clinical efficacy and safety of akatinol memantine in the treatment of Alzheimer's disease (AD).Methods Two hundred and forty-one patients with AD were randomly assigned to receive 10 mg of donepezil daily or 20 mg of memantine daily for 24 weeks.The primary efficacy variables were the Clinician' s Interview-Based Impression of Change Plus (CIBIC-Plus),the Alzheimer Disease Assessment Scale-cognition (ADAS-cog) and the Activities of Daily Living (ADL).The secondary efficacy variables were the Neuropsychiatric Inventory (NPI) and the Mini-Mental Status Examination (MMSE).Results Two hundred and seven patients completed the study and were evaluated at week 24.Both memantine and donepezil had significant efficacies at the end point, according to the ADAS-cog, the ADL, the NPI and the MMSE.Patients receiving memantine had a similar outcome as those receiving donepezil, according to the results of all the variables changes (CIBIC-Plus: memantine 3.4±0.8vs donepezil 3.5±0.8; ADAS-cog: memantine-4.7±5.8 vs donepezil-4.6±6.5; ADL: memantine -2.4±6.7 vs donepezil-2.2±5.3 ; NP1: memantine-5.8±9.0 vs donepezil-3.1±8.5 ; MMSE:memantine 1.7±3.1 vs donepezil 1.8±2.8, all P >0.05).The adverse events were as following: donepezil group 41.88% and memanintine group 30.58%.Conclusion The memantine as a new drug for AD, has the similar efficacy as donepezil, and it is safe.

cry1Ah1, one of holo-type cry genes, cloned in this laboratory from Bacillus thuringiensis strain has been patented in China, and it encoded a protein with strong insecticidal activity against certain lepidopteran insect pests, such as Chilo suppressalis. cry1Ah1 gene is exhibiting good application prospects. In order to improve the expression level of cry1Ah1 gene in rice, and investigate the effect of codon usage preference of gene expression, we designed five different optimized schemes for cry1Ah1 insecticidal critical fragment in accordance with bias of rice codon, to improve G+C content, removed the shear signal and unstable factors. Optimized cry1Ah1 genes were transformed into Escherichia coli Rosetta (DE3) respectively, and 65 kDa polypeptides was expressed normally in inclusion body separately. All of these expressed polypeptides showed insecticidal activity against 2nd-instar larvae of Plutella xylostella and neonate of Chilo suppressalis. After transformation with modified cry1Ah1 genes into Var nippobare, the transgenic rice seedlings were detected by PCR, the positive rate containing target gene was more than 87%. Afterwards, the results of real-time RT-PCR and ELISA assay indicated that the highest expression level of five modified cry1Ah1 genes was that using the highest frequent codons. Average expression amount of Cry1Ah1 polypeptides was 0.104% of total soluble proteins from the positive transgenic rice.
Animals ; Bacillus thuringiensis ; genetics ; metabolism ; Bacterial Proteins ; biosynthesis ; genetics ; Cloning, Molecular ; Codon ; genetics ; Endotoxins ; biosynthesis ; genetics ; Hemolysin Proteins ; biosynthesis ; genetics ; Insecticides ; Lepidoptera ; Oryza ; genetics ; Pest Control, Biological ; methods ; Plants, Genetically Modified ; genetics ; Recombinant Proteins ; biosynthesis ; genetics

Objective:To investigate the expression of miRNA-522-3p (miR-522-3p) in gastric cancer tissues/cells and its regulation of RSU1 expression and to analyze the effect of miR-522-3p on biological function of gastric cancer cells in vitro.Methods:miR-522-3p relative expression levels in tumor tissues and adjacent tissues of 50 patients clinically diagnosed as gastric cancer in Shanxi Bethune Hospital from May 2019 to June 2019 were detected by using real-time quantitative polymerase chain reaction (qRT-PCR). MGC-803 cells and BGC-823 cells in gastric cancer were divided into miR-522-3p inhibitor group (transfected with miR-522-3p inhibitor) and empty vector group (transfected with empty vector). The cell proliferation was detected by using CCK-8 assay, cell scratch assay was used to detect the scratch healing ability of cells, and flow cytometry was used to detect the apoptosis. The target correlation between miR-522-3p and RSU1 was detected by using double luciferase reporter gene assay, the change of RSU1 protein was detected by using Western blot.Results:qRT-PCR showed that compared with adjacent cancer tissues, the relative expression level of miR-522-3p was up-regulated, and the difference was statistically significant (0.84±0.31 vs. 0.48±0.22, t = 2.93, P < 0.05). There were no statistically significant differences in the relative expression level of miR-522-3p in gastric cancer tissues with different tumor diameter and pathological grade (all P < 0.05). In vitro experimental assay showed that the cell proliferation rates of MGC-803 and BGC-823 cells in miR-522-3p inhibitor group at 48 h and 72 h were decreased (all P < 0.05). Furthermore, MGC-803 and BGC-823 tranfected with miR-522-3p inhibitor could effectively inhibit the scratch healing ability of MGC-803 and BGC-823 cells. Dual-luciferase reporter gene assay verified that miR-522-3p targeted to RSU1 3'UTR and affected its fluorescence activity. Western blot results showed that miR-522-3p could promote RSU1 protein expression. Conclusions:miR-522-3p is involved in the progression of gastric cancer probably via the regulation of RSU1 expression, and it may be a potential therapeutic target.