This paper reports the results of a study about the segregational stability of a series of pNK289-derived plasmids. The segregational stability in B. subtilis AS1. 1176 was found to be different among these same originated plasmids. The difference in segregational stability was shown not to be related to the sizes or replication patterns of the plasmids, but to have some relation to their copy numbers. As the unstable plasmid pNK219 can be miaintained stably in B. subtilis BD 224, it can be inferred that the host inheritable background could affect the segregational stability of plasmid. These results not only have laid a foundation for finding out some genes related to the stability of pNK289-derived plasmids, but also provided theoretical basis for constructing stable recombinant plasmid in Bacillus.

AIM: To establish the method for determing four effective components in Qidan Capsules(total saponin of Radix et Rhizoma Notoginseng,total phenolic acids of Radix et Rhizoma Salviae Miltiorrhizae) by RPHPLC. METHODS: The contents of ginsenoside Rg1、ginsenoside Rb1,notoginsenoside R1 were simultaneously determined by an HPLC system with Lichrospher C18(150 mm ? 4. 6 mm,5 ?m). The mixture of acetonitrile and water was used as the mobile phase and the flow rate was 1. 0 mL/min. The detection wavelength was set at 203 nm. The content of salvianolic acid B was determined by an HPLC system with Lichrospher C18 (150 mm ? 4. 6 mm,5 ?m). The mobile phase was (formic acid-water)-(methanol-acetonitrile) = 62 ∶ 38. Formic acid-water (1 ∶ 59),Methanol-acetonitrile (30 ∶ 10),and the flow rate was 1. 0 mL/min and the detection wavelength was 286 nm. RESULTS: The linear ranges of notoginsenoside R1,ginsenoside Rg1,ginsenoside Rb1 and salvianolic acid B were 0. 472 1 - 2. 832 ?g(r = 0. 999 5),1. 734 - 10. 404 ?g (r = 0. 999 9),1. 732 - 10. 392 ?g (r = 0. 999 9),0. 4 - 4. 0 ?g (r = 0. 999 9) respectively. The average recoveries (n = 5) were 100. 32% ,99. 965% , 100. 285% and 101. 4% ,corresponding RSD were 1. 01% ,2. 53% ,2. 46% and 1. 88% respectively. CON-CLUSION: The results indicate that the HPLC method is simple,highly selective and reproducible; thus it can be used in the determination of the four components in Qidan Capsule.

Objective To investigate the effects of vitamin K1 in the adjuvant treatment of spasmodic cough in pertussis syndrome children,and its impacts on length of hospital stay.Methods 87 pertussis syndrome children were randomly divided into two groups,among which 41 cases in the control group were treated with the therapies such as anti -infection,respiratory support,antispasmodic,expectorant et al,while 46 cases in the treatment group were treated additionally with vitamin K1 on the basis of the control group.Then compared the duration and hospital stay of the two groups with spasmodic cough.Results The disappeared time of spasmodic cough in the treatment group was (7.22 ±1.33)d and hospital stay was (9.52 ±1.84)d,which in the control group were (15.51 ±2.73)d,(18.71 ± 3.30)d respectively,and there were statistically significant differences(t =-18.310,-16.269,all P <0.01).In the treatment group,the total effective rate was 93.5%,there were 18 cases with markedly effective,25 cases with effective and 3 cases with ineffective.Correspondingly,there were 7 cases markedly effective,23 cases effective, 11 cases ineffective,and total efficiency rate was only 73.1% in the control group,the difference was statistically significant(χ2 =4.285,P <0.05 ).Conclusion Vitamin K1 to alleviate spasmodic cough in children has a significant effect,which can reduce the duration of the cough time and hospital stay in pertussis syndrome children, and also can improve the clinical effect.

Objective:To explore any correlation between ratings using item d550 of the International Classification of Functioning, Disability and Health (ICF-d550) and the nutritional status of patients with cerebrovascular disease.Methods:Nutritional assessments of 260 patients with cerebrovascular diseases hospitalized in a geriatric care hospital were carried out using the ICF-d550 and NRS2002 nutrition risk screening. The enter method was used to analyze the relationship between clinical factors and the scales. Spearman correlation coefficients quantified the correlation between ICF-d550 and NRS2002 results and the influence of clinical factors.Results:According to the ICF-d550 ratings the incidence of nutritional disorders was 85.00% while the NRS2002 reported 68.85%. The correlation coefficient between the two sets of results was 0.49, with the correlation coefficient of the males (0.53) slightly higher than that of the females (0.43). The correlation strengthened with age. The correlation coefficients of thin, normal and overweight persons were 0.61, 0.44 and 0.50 respectively.Conclusions:The ICF-d550 and NRS2002 can both be used to evaluate the nutritional risk of elderly patients with cerebrovascular disease, with good correlation.

Helicobacter pylori (HP) infection is one of the most prevalent chronic bacterial infections in the world, which is closely related to the development of gastrointestinal diseases, such as chronic gastritis, gastroduodenal ulcer and gastric cancer. Empirical treatment of HP infection may lead to antibiotic resistance, adverse reactions and poor compliance. The decreased HP eradication rate is related to antibiotic resistance, HP converting to coccoid form and admission of proton pump inhibitors (PPI). The implementation of precise therapy can effectively enhance the HP eradication rate, through antibiotics selecting based on detection of drug sensitivity phenotype and drug resistance genes, reducing adverse drug reactions, increasing patient compliance, and rationally administrating PPI, etc. This article reviews the research progress of precision therapy for HP infection to provide reference for clinicians.

Objective: To investigate the prognostic effect of neonatal morbidities on poor outcomes at 12 months corrected age in very low birth weight (VLBW) premature infants . Method: From November 2013 to October 2014, a multi-center retrospective study was conducted in 8 tertiary Maternal and Children′s hospitals in Guangdong, Hunan and Fujian. The premature infants survived to a postmenstrual age (PMA) of 36 weeks with birth weight less than 1 500 g and without congenital diseases were included, and divided into two groups according to poor outcomes. The birth weight, gestational age, morbidities and poor outcomes (death, cerebral palsy, cognitive delay, et al) were recorded. Data were analyzed with Chi-square test to investigate the relationship between morbidities and poor outcomes. And the predictive effect of the top three morbidities were analyzed by Logistic regression analysis. Result: Total of 834 VLBW premature infants (473 boys and 361 girls) finished the follow-up, whose average gestational age and birth weight were (30.6±1.8) weeks and (1 189±159)g. The incidences of BPD, severe ROP, NEC, brain injury and sepsis were 207 (24.8%), 119 (14.3%), 58 (7.0%), 281 (33.7%) and 124 (14.9%), respectively. There were significant differences between the two groups in the incidences of BPD, severe ROP, NEC, brain injury and sepsis(χ²=42.10, 47.20, 4.81, 44.28, 18.63, all P<0.01), which had significant correlation with poor outcomes at 12 months corrected age. The three top morbidities were severe ROP, BPD and brain injury(OR=3.82, 2.90, 2.80). Combined morbidities with BPD, severe ROP and brain injury correlated with higher risk of poor outcomes (one morbidity, OR=3.14, β=1.15; two morbidities, OR=7.31, β=1.99; three morbidities, OR=22.41, β=3.11; all P<0.01). Conclusion BPD, severe ROP, NEC, brain injury and sepsis were the risk factors of poor outcomes at 12 months corrected age in VLBW infants. And the more combined morbidities with severe ROP, BPD and brain injury, the higher risk of poor outcomes in this population. Trial registration Clinical Trails, NCT03104946.

To develop an intelligent lower limb rehabilitation instrument which could realize the quantification and visualization of lower limbs' raising angle and frequency, using the smart client to realize the remote control, autonomous data acquisition and the establishment of database. Doctors had the access to the database in order to adjust the rehabilitation program in time to meet the individual requirement. We realized the design of intelligent lower limb instrument based on the Andriod smartphone, which is suitable for clinical and family use.
Computers ; Databases, Factual ; Humans ; Leg ; Mobile Applications ; Rehabilitation ; instrumentation ; Smartphone