Objective: To construct HBV adr gene vaccine pCMVS 2-S and to observe the specific humoral immune responses in C57BL/6 mice after gene immunization. Methods: The HBV gene vaccine was injected into tibialis anterior muscles of C57BL/6 mice. ELISA was used to detected the anti-HBs antibody in mice sera at various time points after gene transfer. Results: Anti-HBs in sera of mice was tested positive 1 week after plasmid injected, the level of antibody peaked 4 weeks later, and kept high titer for at least 2 months. Conclusion: The good response of humoral immunity can be induced by injection of pCMVS 2-S in C57BL/6 mice.

Objective:To evaluate the biological characters of C57-TgN(HBV adr2.0)SMMU transgenic mice. Methods: Integration,expression,replication and histology change of hepatitis B virus gene in F6 transgenic mice were estimated by ge-nomic DNA PCR,Western blotting,ELISA,immunohistochemistry,serum DNA PCR,transmission electron microscopy and H-E staining. Results: Hepatitis B virus gene was integrated into F6 C57-TgN(HBV adr2. 0)SMMU transgenic mice and expressed HBsAg,HBcAg and X protein in liver tissue. HBsAg and HBeAg were expressed in serum of 19. 54% and 3. 39% F6 transgenic mice. Hepatitis B virus were replicated in serum and liver tissue of transgenic mice. Long-term integration,expression and replication of hepatitis B virus gene induced pathological lesion of transgenic mice liver and lung. Conclusion: C57-TgNCHBV adr2. 0)SMMU transgenic mice line has the biological characters including integration of hepatitis B virus gene into genomic DNA,expression and replication of hepatitis B virus gene in serum and liver, and histological change in liver and lung. It is a valuable animal system to study pathogenesis, treatment and prevention of hepatitis B virus.

OBJECTIVE To assess the guideline role of preoperative subjective and objective assessment on nasal obstruction in chronic rhinosinusitis(CRS) patient during perioperative period. METHODS The patients with CRS who's chief complaint was nasal obstruction were divided into experimental group and control group according to different doctors. Visual analog scale, rhinomanometry and acoustic rhinometry were used to assess subjective and objective nasal obstruction, and nasal endoscopy and sinus CT examination were applied to evaluate the condition of nasal cavity and nasal sinuses. Patients were taken corresponding appropriate strategies in experimental group, but conventional empirical measures in control group during perioperative period. Postoperative follow-up were performed in 6 months and 1 year. SPSS21.0 was used for statistical analysis. RESULTS There was no statistical difference in nasal obstruction symptom score, total rhinomanometry before operation between experimental group and control group(P>0.05). There were statistical difference between the 2 groups after operation in nasal obstruction symptom score, total rhinomanometry. At the 2 postoperative time points (6 months, 1 year after operation) compared with preoperative period, significant differences were found in the parameters evaluated between the two groups(P<0.05). The curative effect in different postoperative time showed statistical significance(P<0.05). CONCLUSION Preoperative subjective and objective assessment for nasal obstruction can be used not only in the evaluation of severity and treatment effect, but also in the guideline of perioperative treatment for CRS combined with nasal endoscopy and sinus CT examination, which can improve nasal obstruction and the treatment effect of CRS.

Objective: To analyze the clinical effect of the endoscopic holistic rhinoplasty in order to improve its clinical application and safety. Methods: The patients with external nasal deformities and complained nasal congestion were assessed before operation and undergoing endoscopic holistic rhinoplasty from January 2015 to June 2017. Therefore, the internal nasal plasty and external nasal plasty were performed simultaneously, so as to correct the abnormalities of internal and external nasal structures, restore nasal ventilation function, and achieve the purpose of external nose cosmetology. The nasal congestion, visual analog scale, rhinomanometry and acoustic rhinometry and patient satisfaction were used to assess the efficacy. SPSS 21.0 was used for statistical analysis. Paired sample t test was used for preoperative and postoperative comparison, and P<0.05 was taken as statistically significant difference. Results: All the patients were followed up from one month to one year without complications. Postoperative nasal obstruction VAS score (1.63±0.76) was significantly lower than preoperative(6.35±0.65) (t=6.315, P<0.001). The minimum nasal cross-sectional area was (0.38±0.29) cm² preoperatively and (0.52±0.14) cm² postoperatively, which was significantly higher than that before the operation (t=9.732, P<0.001). Postoperative nasal volume (9.21±3.23) cm³ was significantly higher than preoperative (6.44 ± 1.04) cm³ (t=9.559, P<0.001), and postoperative nasal resistance (0.26 ± 0.07) kPa·s/L was lower than preoperative (0.65±0.21) kPa·s/L(t=7.524, P<0.001). The postoperative satisfaction survey result were very satisfactory in 41 cases (78.85%), accounted satisfaction in 11 cases (21.15%). Conclusions The application of the endoscopic holistic rhinoplasty has a good clinical effect and a high degree of satisfaction.

Objective: To clone mouse rod opsin promoter (ROP) and establish transgenic mice harboring mouse rod opsin promoter and enhanced green fluorescent protein(mROP-EGFP) fusion gene. Methods: Mouse ROP was cloned from C57BL/6 mouse genomic DNA by polymerase chain reaction (PCR). Expression vector of mROP-EGFP fusion gene were constructed by recombination DNA technique. It was identified by restriction endonucleases digestion and confirmed by DNA sequencing. After Not I restriction endonuclease digestion, the coding elements were microinjected into male pronuclei of mice zygotes to generate transgenic mice. The pups were evaluated by PCR at genomic DNA level and mated with normal mouse. Expression of GFP in retina of transgenic mice was detected by fluorescent microscope. Results: 2. 1 kb mouse rod opsin promoter fragment was amplified from mice genome DNA. Expression vector pmROP-EGFP was constructed successfully. Following microinjection of coding sequence of pmROP-EGFP, 3 pups were verified to integrate the mROP-EGFP fusion gene in their genomic DNA by PCR assay, named C57-TgN (mROP-EGFP )SMMU21, C57-TgN (mROP-EGFP)SM-MU26 and C57-TgN(mROP-EGFP) SMMU27. They could express GFP in retina. Conclusion: 2. 1 kb mouse rod opsin promoter is cloned and expression vector pmROP-EGFP is constructed. mROP-EGFP fusion gene transgenic mice are established, which harboring mROP-EGFP gene and expressing GFP in their retina. This is valuable for studying the development of brain and retina, pathogenesis of retina disorder and retina transplanting.

Objective: To study the prevalence and correlates of unprotected sexual intercourse within HIV serodiscordant couples in Dehong prefecture, Yunnan Province, China, in 2014. Methods: This study was based on the follow-up investigation of "the AIDS cohort of seronegative spouses of HIV-infected individuals in Dehong prefecture" in 2014. The 1 520 participants were HIV seronegative spouses from all five counties/cities of Dehong prefecture who voluntarily participated in the cohort. Inclusion criteria included: having a HIV-positive spouse; ≥16 years of age; having had sexual intercourse with spouse in the past year; and being a resident of Dehong prefecture. Information on HIV-positive spouses were also collected through the local AIDS epidemic database. Chi square analysis was performed to compare differences in the rates of unprotected sexual intercourse between participants with different characteristics and lifestyle choices. Multivariable logistic regression model analysis was performed to determine correlates with unprotected sexual intercourse. Results: The 1 520 participants had a mean age of 38.7±9.4, compared with 39.7±8.9 for their HIV-positive spouses. Among the HIV-positive spouses, 77.8% (1 183/1 520) had been infected for more than 3 years, and 87.6% (1 332/1 520) had received antiretroviral therapy. The prevalence of unprotected sexual intercourse within serodiscordant couples over the past 12 months was 16.1% (244/1 520). The prevalence of unprotected sexual intercourse correlated with the level of education of HIV-negative spouses (illiterate vs. middle school and above, OR=1.58, P=0.044), the number of years since diagnosis of HIV-positive spouses (short vs. long, OR=1.6, P=0.006), antiretroviral therapy of HIV-positive spouses (no vs. yes, OR=2.78, P<0.001), the frequency of sexual intercourse per month (high vs. low, OR=1.66, P=0.019), and whether the couple had children (no vs. yes, OR=1.72, P=0.007). Conclusion The prevalence of unprotected sexual intercourse within serodiscordant couples in Dehong prefecture was relatively high in 2014. Factors found to correlate with the occurrence of unprotected sexual intercourse within these couples included illiteracy of HIV-negative spouses, short time since diagnosis of HIV-positive spouses and lack of antiretroviral therapy, high frequency of sexual intercourse and no children.

OBJECTIVETo study the incidence rate and risk factors of HIV infection among sero-negative spouses of people living with HIV/AIDS (HIV/AIDS) in Dehong prefecture, Yunnan province.

METHODSA prospective cohort study was conducted from February 2009 to December 2014 in Dehong prefecture, Yunnan province. Questionnaire survey and HIV related tests were carried out once a year.

RESULTSBy the end of December 2014, 2 091 sero-negative spouses had been recruited, of whom 1 692 were followed-up for at least one time. RESULTS showed that 34 new HIV infections were identified within 5 494.52 person years of follow-up, for an overall incidence of 0.62 per 100 person years. HIV incidence rates appeared as 0.79 per 100 person years, 0.62 per 100 person years, 0.47 per 100 person years in 2009-2010, 2011-2012, 2013-2014, respectively. Data from the Cox proportional hazard regression model indicated that risk factors of HIV infection among sero-negative spouses of HIV/AIDS were: non-consistent condom use (HR=4.64, 95%CI: 1.89-11.40,P= 0.001), HIV/AIDS delayed antiviral retrovirus therapy (ART) for more than one year (HR=3.70, 95% CI: 1.44-9.49,P=0.007) after the HIV negative spouses were initially recruited, HIV/AIDS did not receive any ART (HR=3.62, 95% CI: 1.14-11.51,P=0.029).

CONCLUSIONSThe incidence of HIV infection among sero-negative spouses in Dehong prefecture was relatively low. Publicity on consistent condom use program should be emphasized among sero-negative spouses of HIV/AIDS, together with the timely provision of ART to those HIV/AIDS.

Adolescent ; Adult ; China ; epidemiology ; Female ; HIV Infections ; epidemiology ; transmission ; HIV Seronegativity ; Humans ; Incidence ; Male ; Mass Screening ; Middle Aged ; Prospective Studies ; Risk Factors ; Sexual Behavior ; Spouses ; Surveys and Questionnaires ; Young Adult

The incidence of rib fracture in patients with chest trauma is about 70%. Simple rib fractures do not need special treatment. Multiple rib fractures and flail chest are critical cases of blunt trauma, which often cause serious clinical consequences and need to be treated cautiously. Nowadays, there is a controversy about the diagnosis and treatment of multiple rib fractures and flail chest. In the past, most of the patients were treated by non-operative treatment, and only less than 1% of the patients with flail chest underwent surgery. In recent years, studies have confirmed that surgical reduction and internal fixation can shorten the hospital stay, and reduce pain and cost for patients with flail chest, but there is still a lack of relevant clinical consensus and guidelines for diagnosis and treatment, which leads to great differences in clinical diagnosis and treatment plans. This article reviewed the treatment, surgical indications and surgical timing of multiple rib fractures and flail chest.