Adolescent ; Biopsy, Fine-Needle ; Chromosomes, Human, Pair 18 ; Female ; Humans ; In Situ Hybridization, Fluorescence ; Oncogene Proteins, Fusion ; genetics ; Proto-Oncogene Proteins c-bcl-2 ; metabolism ; Sarcoma, Synovial ; genetics ; metabolism ; pathology ; Soft Tissue Neoplasms ; genetics ; metabolism ; pathology ; Translocation, Genetic ; Vimentin ; metabolism

Objective To investigate the clinical spectrum of respiratory viruses in infants and young children with acute lower respiratory infection(ALRI) in Chongqing area from 2003-2007.And to assess the clinical diagnostic value of virus detection in nasopharyngeal secretions(NPS) and serum viral antibody detection for ALRI.Methods Cases of 2 529 specimens of NPS in hospitalized children with ALRI from Apr.2003 to Oct.2007 were taken for detecting 7 common respiratory virus antigens by immunofluorescence assay including respiratory syncytial virus (RSV),adenovirus(ADV),influenza A(IA),influenza B (IB),parainfluenza virus1-3 (PIV1,PIV2,PIV3).Fifty-five thousand eight hundred and eighty-seven samples were tested for ADV-IgM by ELISA.Among those,45 159 cases were further tested for RSV-IgM by ELISA.Results Respiratory virus pathogens were detected in 778 samples out of 2 529(30.76%) including RSV positive in 668 samples (85.86%),PIV3 positive in 75 samples (9.64%),IA positive in 22 samples (2.57%),ADV positive in 15 samples ( 1.93%),only 1 sample ( 0.13%) positive for both PIV1 and RSV. And the positive rate of RSV-IgM was 0.9%-15.2%,and the positive rate for ADV-IgM was about 0.6%-10.6%.RSV infection occured mainly in winter and spring.Conclusions Respiratory virus is the most common pathogen in children with ALRI during the survey period in Chongqing area,especially for RSV infection.The pattern of RSV circulation varied every year with seasonality.It is suggest that this year is peak one for RSV infection from the monthly positive results,especially in Feburary(50%) in 2007.But the infection rate of PIV3,IA,ADV and PIV1 are lower,particularly IB and PIV2 infection have not been seen for the last 5 years.It is fast and accurate to detect RSV antigen and suit to clinical diagnosis by using immunofluorescence assay than other antibody detection.

Background The filtering surgery is the main method of treating glaucoma.Fibrosis of filtering bleb is a key cause of failure of operation.The study about application of anti-scaring drug in filtering surgery is a hotspot.Objective Present study was to investigate the anti-scaring effect of paclitaxel aher trabeculectomy.Methods Thirty-two adult clean domestic rabbits underwent standardized trabeculectomy and randomly divided into 4 groups.Normal saline solution was used beneath the scleral flap during trabeculectomy for 3 minutes in 16 eyes of 8 rabbits as controls.0.3 g/L mitomycin C,0.2 g/L paclitaxel or 0.3 g/L paclitaxel was administered at the same way respectively in other 3 groups.Intraocular pressure (IOP) was measured,and eye numbers with function blebs were compared among 4 groups at the 4th,7th,14th and 28th day after surgery.The opening of filtration tunnel and the number of inflammatory cells were observed by hematoxylin and eosin staining,and proliferation of new collagen fibers was evaluated by Masson trichrome method.This study complied with the Regulations for the Administration of Affair Concerning Experimental Animals by State Science and Technology Commission(version 1988). Results No significant differences were found in the change of lOP among 4 groups before operation(F=0.54,P=0.83)and the 4th day aher operation(F=0.57,P=0.87).The IOP value was statistically lower in 0.3 g/L mitomycin C group,0.2 g/L paclitaxel group and 0.3 s/L paelitaxel group than the normal saline solution group(P＜0.05)with the lowest value in 0.3 s/L paclitaxel group in 7,14,28 days after operation(P＜0.05).Functional filtering bleb was seen in all the rabbit eyes in the 4th day after operation.In 7,14,28 days after operation,the number of eyes with functional bleb wag evidently more in 0.3 g/L mitomycin C group,0.2 g/L paclitaxel group and 0.3 g/L paclitaxel group compared with normal saline group(P＜0.05).The histological examination showed that the infiltration of inflammatory cells in filtering tunnel was much more obvious in normal saline solution group than the other groups with the most mild response in 0.3 g/L paclitaxel group.Masson trichrome revealed that proliferation of new collagen fibers in 0.3 g/L paclitaxel group was significantly decreased in comparison with those in other three groups at the 4th,7th,14th and 28th day after surgery(all P＜0.05). Conclusion Paclitaxel can inhibit the inflammatory response and collagen fibrosis and therefore open the filtering tunnel after it be used topically during the glaucoma trabeculectomy.

Objective: To investigate the trend in incidence of stroke in Nanshan District, Shenzhen City from 2010 to 2021, so as to provide the evidence for formulating the integrated strategy for stroke control. Methods: The data of stroke morbidity in Nanshan District from 2010 to 2021 were collected through Shenzhen Chronic Disease Prevention and Control Management System. The incidence of stroke was calculated, and standardized by the population of the Chinese Sixth National Census in 2010. The trends in stroke incidence were evaluated in Nanshan District from 2010 to 2021 using annual percent change (APC) and average annual percent change (AAPC), and gender-, age- and subtype-specific incidence of stroke was descriptively analyzed. Results: A total of 30 377 cases with stroke were reported in Nanshan District from 2010 to 2021, with a crude incidence rate of 190.45/105 and a standardized incidence rate of 405.65/105. The crude incidence rate of stroke appeared a tendency towards a rise in Nanshan District from 2010 to 2021 (APC=5.38%, t=4.678, P=0.001), and a higher crude incidence rate of stroke was seen among men than among women (227.57/105 vs. 148.40/105; χ2=1 309.580, P<0.001). The incidence of stroke appeared a tendency towards a rise with age (χ2trend =435.717, P<0.001), and there was a tendency towards a rise in stroke incidence among residents under 40 years of age (APC=2.89%, t=2.538, P=0.029). The crude incidence of ischemic stroke was 151.24/105, which was higher than that of hemorrhagic stroke (39.21/105) (χ2=10 521.000, P<0.001). Conclusions The incidence of stroke appeared a tendency towards a rise in Nanshan District from 2010 to 2021, with ischemic stroke as the predominant subtype of stroke. Males and middle-aged and elderly residents should be given a high priority for stroke prevention and treatment.

Objective: To investigate the status and identify the influencing factors of smoking behaviors among residents in Nanshan District, Shenzhen City, so as to provide insights into tobacco control. Methods: Permanent residents at ages of more than 18 years were recruited from 17 communities in Nanshan District, Shenzhen City using the stratified multistage random sampling method from July to November, 2018. Participants' demographic features, smoking, smoking cessation and exposure to secondhand smoke were collected using the Individual Questionnaire for 2018 Chinese Adult Chronic Disease and Nutrition Surveillance. The factors affecting current smoking were identified using a multivariable logistic regression model. Results: Totally 1 700 questionnaires were allocated, and 1 625 valid questionnaires were recovered, with an effective recovery rate of 95.59%. The respondents included 714 men and 911 women, with a male to female ratio of 1∶1.27, and had a mean age of ( 45.13±13.59 ) years. The prevalence of current smoking was 15.51%, with 28.15% prevalence in men and 5.60% in women. The mean age of starting daily smoke was ( 21.00±5.52 ) years, and the mean daily smoking frequency was (13.53±9.15) cigarettes/d. The prevalence of smoking cessation was 6.58%, with 10.64% in men and 3.40% in women, and the prevalence of exposure to secondhand smoke was 41.42%, including 46.63% in men and 37.32% in women. Multivariable logistic regression analysis showed that an educational level of junior high school ( OR=1.683, 95%CI: 1.088-2.602 ), an educational level of high school/technical secondary school/vocational school (OR=1.687, 95%CI: 1.185-2.402), an occupation of farmers ( OR=2.514, 95%CI: 1.404-4.500 ), and an occupation of commercial and service personnel ( OR=1.939, 95%CI: 1.093-3.439 ) were associated with current smoking. Conclusion The prevalence of current smoking is low among residents in Nanshan District, but the prevalence of current smoking in women is higher than the national level. Educational level and occupation are main factors affecting current smoking.

OBJECTIVETo investigate the effects and regulatory mechanism of ILK on angiogenesis in hypertrophic scar.

METHODSThe human scar microvascular endothelial cells (HSMECs) were isolated from 6 patients' hypertrophic scar in vitro. The HSMECs with good condition in 2nd to 4th generation were selected as experimental objectives. (1) HSMECs were divided into the blank control group (treated with routine culture), negative control group (treated with only Lipofectamine 2000), LY294002 group (incubated with 50 nmol/L LY294002), ILK siRNA group (incubated with 20 nmol/L ILK siRNA). RT-PCR and Western Blot were used to detect the expression of ILK mRNA and its protein after transfecion for 48 h. (2) The digested HSMECs of four groups were resuspended with DMEM without serum and then seeded onto the upper compartment of transwell insert which contained complete medium in its lower compartment. The cell migration experiment was stopped in 10 h and then the migrated cells were counted to analyze the effects of different interventions on the migration ability of HSMECs. (3) The thawed ECMatrix was put into each well of pre-colled 48-well tissue culture plate, and then the plate was put into the incubator at 37 degrees C to make it to become gel. The HSMECs of four groups were seeded onto the surface of the ECMatrix gel and were put into incubator. Eight random view-fields per well should be valued by the sheet of pattern recognition about angiogenesis after 8 hours to evaluate the ability of angiogenesis in vitro between four groups.

RESULTS(1) The expression of ILK mRNA (ILK mRNA = 0.829 +/- 0.109, t = 13.151, P = 0.006) and protein (ILK protein = 0.096 +/- 0.049, t = 36.656, P = 0.000) were both inhibited obviously in ILK siRNA group compared with the blank control group (ILK mRNA = 0.829 +/- 0.109, ILK protein = 1). And, the expression of ILK in LY294002 group was slightly lower than that of black control group, but there was no statistical difference. (2) The number of migrated cells in ILK siRNA group (88.111 +/- 3.079) and LY294002 group (138. 667 +/- 2.404) were respectively lower than that in blank control group (322.333 +/- 3.712, P < 0. 05) in 10th hour. (3) Compared to blank control group (4.333 +/- 0.191), the ability of angiogenesis in vitro decreased significantly ILK siRNA group (2.625 +/- 0.125) and LY294002 group (3.125 +/- 0.250), in which, the vascular network structures were not formed perfectly in 8th hour (P < 0.05).

CONCLUSIONSThe ability of HSMECs' migration and angiogenesis in vitro are inhibited significantly when the expression of ILK is down-regulated. It reveals that ILK may play an role in the regulation of scar angiogenesis.

Cell Movement ; Cell Proliferation ; Chromones ; pharmacology ; Cicatrix, Hypertrophic ; enzymology ; pathology ; Endothelial Cells ; cytology ; drug effects ; Humans ; Lipids ; pharmacology ; Morpholines ; pharmacology ; Neovascularization, Pathologic ; etiology ; pathology ; Protein-Serine-Threonine Kinases ; genetics ; physiology ; RNA, Messenger ; analysis ; RNA, Small Interfering ; metabolism

OBJECTIVETo explore the clinical symptom and effect of arthroscopic treatment of symptomatic anterior cruciate ligament (ACL) cysts of the knee.

METHODSClinical data from 12 symptomatic ACL cysts patients from January 2005 to December 2010 were retrospectively analyzed,including 8 males and 4 females,with an average age of (33.7±9.5) years old (ranged, 19 to 53 years old). The locations were the left knee in 5 cases and the right knee in 7 cases. The disease duration ranged from 3 to 48 months,with a mean of (15.8±13.2) months. All cysts were arthroscopically resected. Range of motion was measured preoperatively and postoperatively, and Lysholm scoring system was used to evaluate the knee function.

RESULTSAll the incisions healed by first intention, and no complications occurred. Twelve patients were followed up for an average of (32.3±6.6) months(ranged, 24 to 48 months). The symptoms of arthralgia,swelling and interlocking of the affected knees disappeared. There was no recurrence during the follow-up. There were significant differences in the range of motion and Lysholm score between pre-operation and post-operation.

CONCLUSIONArthroscopic surgery, showing its advantages of minimal invasion and rapid recovery,is an effective measure in the treatment of ACL cysts.

Adult ; Anterior Cruciate Ligament ; physiopathology ; surgery ; Arthroscopy ; methods ; Cysts ; physiopathology ; surgery ; Female ; Humans ; Magnetic Resonance Imaging ; Male ; Middle Aged ; Range of Motion, Articular

Acupuncture ; instrumentation ; methods ; Acupuncture Therapy ; Adult ; Aged ; Female ; Humans ; Knee Joint ; physiopathology ; Male ; Middle Aged ; Pain ; etiology ; Pain Management ; Patella ; injuries

Objective To investigate the value and dynamic characteristics of diffusion-weighted imaging(DWI)in rabbit liver VX_2 tumor model,with correlation of pathology.Methods Forty New Zealand rabbits were included in the study and VX_2 tumor piece was implanted directly into the liver after laporotomy.Fiffteen had two intrahepatic implants while twenty-five had one implant.DWI was performed on the seventh,fourteenth and twenty-first day after implantation,while routine T_1WI and T_2WI sequences were done on the seventh and fourteenth day.Ten VX_2 tumor samples were studied by pathology.Results The lump detection rates on the seventh day after implantation of DWI,T_1WI and T_2WI were 78.7%(37/47), 10.7%(3/28)and 53.6%(15/28)respectively with statistical significance(x~2=32.61,P

0.05).Conclusions The potential of VX_2 tumor infiltration and metastasis will decrease after chemoembolization in the long-run,while the proliferation ability will increase within a short period of time. The ADC may reflect the proliferation of VX_2 tumor cells.