The plasmids of recombinant suicide vector containing the truncated stn gene and the deleted stn gene were constructed. The Salmonella stn-deficient mutant was prepared by homologous recombination between the mutant stn gene in the recombinant suicide vector and the wild-type gene in the chromosome of S. Typhimurium 2000. The detection of biological activity of stn gene production in those mutants indicated that Salmonella stn-deficient mutants evoked significantly less fluid secretion in mouse intestinal loops compared to that seen with wild-type Salmonella. Upon oral challenge of mice, the fifty percent lethal dose of the Salmonella stn-deficient mutants was greater than that for the wild-type bacteria. Those studies showed that the stn gene is very important factor in the pathogenesis of salmonellosis.

Objective　To explore the changes and significance of the circulating immunocomplexes(CIC) in patients with chronic iridocyclitis.Methods　We assessed circulating immunocomplexes in peripheral blood of 45 patients with recurrent uveitis and 42 healthy controls by PEG deposition with the biochemical analyzer to obtain levels of CIC different with recurrent uveitis.Results　Levels of CIC were significantly higher in active patients(27.358±6.729)than those in controls(13.459±6.164,P＜0.001) and inactive patients (16.248±6.233,P＜0.001),but patients (inactive) had significantly higher levels than those in controls (P＜0.05).Conclusion　Levels of CIC were found in the groups of active patients with recurrent uveitis (27.358±6.729), but levels of CIC in inactive patients fell. The result of this study suggest that recurrence of uveitis is related to immunocomplexes,and changes in the levels of CIC could be also a measure standard of therapeutic effects.

Objective To observe and investigate the effects of the case-based learning assisted with WeChat software in the teaching of nursing constitution regulating theory. Method The two classes of nursing undergraduate Grade 2013 were randomized into the case-based learning (CBL) group and the traditional teaching group (LBL). WeChat group combined with CBL group made preparation before class, including teachers writing the cases and thinking questions, WeChat sending teaching information, students discussing problems in group and collecting information. In class, students gave presentation and made speech, and the teachers made comments, did summary and gave scores to students' performance. In LBL group teacher prepared a lesson, and taught lessens assisted by multimedia PPT. After class, we used the test of nursing constitution regulating and teaching effect questionnaire to compare the differences between the two groups, using SPSS 21.0 for data statistics, and t test for measurement data. Results The single choice score, multiple choice score and the total score of the test of nursing constitution regulating in the CBL group were (52.46±4.35), (33.42±3.11), and (85.88±5.72), higher than the LBL group which were (47.63±5.84), (29.88±4.55), and (77.50±7.88). The difference was statistically significant. Scores of self-study ability, interest in learning, literature retrieval ability, communication and cooperation ability, TCM differentiation and the examination scores in CBL group were significantly higher than that in LBL group. Conclusion The case-based learning assisted with WeChat software can inspire the interest of learning, cultivate the self-study ability and practice the ability of TCM differentiation. It is worthy of being generalized.

In the treatment of 100 cases of prolapsed lumbar intravertebral disc mainly by electric acupuncture on Jiaji( Ex-B 2) plus traction, the total effecrive rate was 91%.

Objective To investigate the bacterial distribution and drug sensitivity characteristics of chronic suppurative sinusitis.Methods Nasal secretions of 89 cases of chronic suppurative sinusitis patients before operation were collected in this study,and nasal secretions were culture in medium.Disk diffusion method (Kirby-Bauer,K-B)was used for drug sensitivity test.Sensitivity of bacteria strain to cefazolin,ceftazidime,cefepime,imipenem,mero-penem,vancomycin,cefoperazone -sulbactam,ciprofloxacin and other antibiotics were analyzed.Results After the submission of purulent secretion specimens of nasal meatus in 89 cases chronic suppurative sinusitis patients with sticky,we found that 80 of the patients were detected bacteria.The positive rate was 89.89% (80/89).80 patients were detected in 82 strains of bacteria,a total of 15 species,of which 1 cases of nasal meatus sticky purulent secretion specimens there were 2 strains of bacteria.In 15 kinds of staphylococcus aureus were detected bacteria,staphylococcus aureus,escherichia coli,pseudomonas,enterobacter aerogenes,5 kinds of bacteria occupy the top 5,respectively, accounted for 21.95%,18.29%,14.63%,13.41%,10.98%.Drug sensitivity test of staphylococcus aureus showed that all of the staphylococcus aureus was sensitive to vancomycin,the sensitivity was 100%;the sensitivity of cefazo-lin,ceftazidime,cefepime,imipenem,meropenem,cefoperazone sulbactam,ciprofloxacin and other antibiotics were 0.00%.All the staphylococcus epidermidis were sensitive to imipenem,meropenem,vancomycin,cefoperazone sulbac-tam,the sensitivity was 100.00%;followed by cefazolin,the sensitivity was 86.67%,and to ceftazidime,cefepime, ciprofloxacin sensitive,were all below 30.00%.Escherichia coli,pseudomonas aeruginosa and enterobacter aerogenes and other gram negative bacteria were sensitive to imipenem,meropenem,the sensitivity was 100.00%.Conclusion The bacterial infection in patients with chronic suppurative sinusitis pathogens,including staphylococcus epidermidis, staphylococcus aureus,escherichia coli,pseudomonas,enterobacter aerogenes,bacterial culture positive to vancomy-cin,imipenem,meropenem,cefoperazone Shubatan,cefazolin and antimicrobial susceptibility,and so on antimicrobial treatment but should closely monitor the antimicrobial spectrum of change,in order to adjust the medication.

H~3-thymidine was used in determining the neuronal mitosis of the traumati cerebral cortex in rats. Intraperitoneal injection of H~3-thymidine was given to the rats immediately after corticectomy of the parietal lobes. On the 4th day after operation, the cerebral tissue was removed, fixed in Carnoy, serial sectioned, and stained with cresyl violet.The results showed that in the surrounding area 100—200?m from the traumatic site, 2-5％ of the various types of cells in the cerebral tissue were labeled, i. e. silver granules were distributed within the nuclei. Macrophages, endothelial cells and pericytes of vessels make up most of the 2—5％, whereas neuroglia and neuron rank next. The nuclei of the majority of the labeled cells were in the interphase state and a few of them were in the mitotic state. The more the labeled cells are in the interphase state,, the more the mitosis occur. On the contrary, it is less. They are always in direct proportion. In the case of neurons the same situation occurs.By inference, the mitotic division of the neurons in the cerebral cortex may occur in situ. Possibly some kind of substance is produced after the trauma leads to the division of the mature neurons. The basis for this inference is that a certain number of the neurons in division have typical features of the pyramidal neurons.

For hypertension,lowering blood pressure is the basis and well controlled pressure is the core.The ultimate goal of the therapy is to decrease the risk of target organs damage,then minimize the occurrence of cardiovascular endpoint events.Evidence based medicine has confirmed the advantage of ACEI and CCB therapy in controlling blood pressure,lowering the incidence and the mortality of coronary disease.

Objective To evaluate the clinical value of fetal holoprosencephaly complicated with face malformation by two-dimensional(2D) and three-dimensional(3D) ultrasonography.Methods Fetal faces and brains were examined regularly with 3D ultrasonography when they were suspected abnormal with 2D ultrasonography and compaired the diagnoses with postnatal or induced delivery results.Results 11 cases of holoprosencephaly complicated with face malformation were diagnosed using 2D and 3D ultrasonography.Among these cases,there were 4 with single median mostril,2 with proboscis,2 with cheiloschisis,2 with multipte face malformation,1 with arhinia.They were all comfirmed by postnatal or induced delivery.Conclusions 3D ultrasonography provides visualized,three-dimensional,more precise and clearly fetal structure imagine.It has important supplement to 2D ultrasonography.2D ultrasonography combined with 3D ultrasonography can greatly enhance the diagnosis rate to holoprosencephaly complicated with face malformation.

Chylous Ascites ; congenital ; therapy ; Humans ; Infant ; Male ; Parenteral Nutrition, Total ; Somatostatin ; therapeutic use

Objective To investigate the neurotoxicity of intrathecal (IT) doxepin in rats.Methods Twenty-four adult male Wistar rats weighing 250-300 g in which intrathecal micro-catheter was successfully implanted without complications were randomly divided into 4 groups ( n =6 each):control group ( group N ) and 3 doxepin groups receiving IT doxepin 40,20 and 10 mmol/L 0.2 μl/g respectively (groups D40,D20,D10 ).In N group normal saline was injected IT instead of doxepin.The animals were killed at 6 h after IT administration.The lumbar segment of the spinal cord was removed for microscopic examination and determination of myelin basic protein (MBP) content in the spinal cord using a double-antibody sandwich (ELISA).Results The severity of neuronal damage and decrease in MBP content in the spinal cord induced by IT doxepin were dose-dependent.Conclusion The neurotoxicity induced by IT doxepin is dose-dependent.