OBJECTIVESTo evaluate the clinical significance of the detection of IgG and IgM antibodies against Chlamydia trachomatis (CT) in semen of asymptomatic infertile patients.

METHODSOne hundred and sixteen asymptomatic infertile patients and eighteen fertile males were selected randomly. The routine parameter analysis of semen was fulfilled by computer aided semen analysis(CASA). Then the seminal plasma was separated and the IgG, IgM antibodies against CT in seminal plasma were determined with ELISA method.

RESULTSIgG and IgM antibodies against CT were present in 13.8% (16/116) and 3.4% (4/116) of the semen of infertile patients, while for the fertile males the percentages were 11.1% (2/18) and 0, respectively. There were no differences between the two groups(P > 0.05). In the infertile patients, 22 patients were azoospermia. And in the rest 94 infertile patients, the percentages of IgG and IgM antibodies in abnormal sperm density group were 21.4% (6/28) and 7.1% (2/28), which were higher than those in normal group, but there were no statistical differences(P > 0.05). Similarly, the IgG, IgM antibodies were not correlated with the sperm motility(P > 0.05). The positive percentage of CT in 116 patients was 25.9% (30/116).

CONCLUSIONSThe percentages of IgG and IgM antibodies against CT in semen of asymptomatic infertile patients are similar to that in fertile males, which do not correlate with the changes of semen parameters, and may not be used for indication of CT infection.

Adult ; Antibodies, Bacterial ; blood ; Chlamydia trachomatis ; immunology ; Humans ; Immunoglobulin G ; blood ; Immunoglobulin M ; blood ; Infertility, Male ; microbiology ; Male ; Sperm Count ; Sperm Motility

Objective To explore the effects of HAVCR2 siRNA on apoptosis and cell cycle in the radiation-caused genomic instable liver cells.Methods RNAi was used to inhibit HAVCR2 gene transcription.Cellular apoptosis and cell cycle distribution were detected by flow cytometry (FCM).Expression of p53 gene was assayed by real time fluorescence quantitative PCR.Results HAVCR2 gene was effectively inhibited by RNAi (t =19.21,P ＜ 0.05).After siRNA transferring,cell apoptosis (t =3.65,P ＜ 0.05) and p53 gene expression (t =4.82,P ＜ 0.05) were decreased,and G2-phase arrest was induced(t =-3.41,P ＜ 0.05).Conclusion HAVCR2 siRNA can decrease the generation of apoptosis in the genomic instable liver cells and blocks the cells at G2 phase.

Objective To explore the status of iodine nutrition in 8～10 years children after universal salt iodization(USI)in the iodine deficiency area.Methods Probability proportion to size method(PPS)or simple random sampling methods were used to sample children aged 8～10 years in iodine deficiency area in the vear 1995,1997,1999,2002 and 2005, respectively.Goiter were detected by palpation and B-ultrasound, iodine concentration in salt was detected by direct titration method and that in urine by the method of As3+-Ce4+catalytic spectrophotometry.Results After USI has been implemented,the median of salt and urinary iodine tended to mcreaseand the goiter rate tended to decrease year by year.In 2005,the coverage rate of iodinated salt was elevated to 97.2%,qualified iodize salt rate was 97.1%and edible qualified iodinated salt rate was 94.3%in the whole iodine deficiency areas.The median of urinary iodine Was 227.7 μg/L 89.7%(323/360)of the population had a level of the urinary iodine over 100μg/L Goiter rate of 8～10 years children Wag decreased from 22.3%(282/1267)to 4.4%(53/1200) from 1995 to 2005.Conclusion After 10-year USI,the status of iodine nutrition in ShaJldong Province has been promoted obviously and it is in a suitable iodine nutritional status.

Objective To analyze the monitoring results of human and animal plague in Zhangye city from 1982 to 2011,and further explore the prevention and control policies and measures to control the spread of the disease.Methods The trends of human and animal plague were studied by retrospective survey in Zhangye city.Information of animal and human plague epidemic and prevention and control measures were collcoted and assessed with epidemiology methods,and the density of rodents,the rodents infected with flea,flea index and other indicators were calculated.Results 1982-2011,there were 6 cases of human plague incidence of 6 cases,of which 2 cases cured,4 cases died,the mortality rate was 67％; detection of Yersinia pestis from the captured 5167 animals was 93 strains from 1982 to 2011,the detection rate was 1.80％; 29 840 various vector insects were collected from the body surface of the 5167 animals captured,21 206 hole dries,and three marmot dens.A total of 7050 groups of Marmota parasites and hole stem fleas were inspected,52 strains of Yersinia pestis were isolated,and the average detection rate was 0.74％; 3912 marmot serums were detected,178 were positive,and the positive rate was 4.55％.Conclusions The prevention and control of plague is still very grim in Zhangye city.It is recommended to take publicity,education and active surveillance measures in the future to deal with emergencies and other.

Adult ; Aged ; Bone Transplantation ; methods ; Female ; Fracture Fixation, Intramedullary ; methods ; Humans ; Humeral Fractures ; diagnostic imaging ; surgery ; Humerus ; diagnostic imaging ; surgery ; Male ; Middle Aged ; Tomography, X-Ray Computed ; Young Adult

Caliciviridae Infections ; epidemiology ; China ; epidemiology ; Disease Outbreaks ; Female ; Humans ; Male ; Norovirus ; Schools

ObjectiveTo look into the distribution of “iodine suitable” region in iodine-deficient areas in Shandong province and to provide a scientific basis for guiding the redesignate of iodine-deficient areas and launch scientific supply of iodine.Methods One to 3 copies of water source samples were collected in 105 existing iodine-deficient counties by village.Water iodine content was detected by arsenic-cerium catalytic spectrophotometry.The areas with water iodine content below 10 μg/L was defined as iodine-deficient areas and among 10 - 150 μg/L were “iodine suitable areas” and greater than 150 μg/L were high iodine areas.Results The research was carried out in 14 cities,105 counties,and 1337 towns.We collected 65 716 water samples.Sample recovery efficiency reached 99.8％.The median of water iodine was 5.57 μg/L.In the 1337 towns surveyed,there were 82.05％(1097/1337) of the township with water iodine median ＜ 10 μg/L,17.43％(233/1337) between 10 - 150 μg/L,and 0.52％(7/1337) ＞ 150 μg/L.Conclusions In Shandong province,the water “iodine suitable” regions are distributed scattered with considerable proportion.In iodine-deficient areas,there are areas with high water iodine,and iodine-deficient regions should be redrawn.Emphasis should be put on iodine nutritional status of residents in “high iodine and iodine suitable” regions,and iodine supplementation should be carries out scientifically.

OBJECTIVEWe conducted both quick surveillance and evaluation programs within one week after the novel H7N9 influenza cases had been released by the Ministry of Health (MOH), to get the basic information on H7N9 virus in Guangzhou.

METHODSWe sampled live birds from food markets and the natural habitat of birds to detect H7N9, H5 and H9 viruses. We interviewed workers from both markets and natural habitats. We also reviewed records on pneumonia patients with unknown causes from the surveillance system, to find clues related to the identification of severe pneumonia.

RESULTSWe sampled 300 specimens from 49 stalls in 13 food markets and a natural habitat but none showed H7N9 positive result. A chopping block was detected positive of carrying H5 avian influenza virus, while another 4 specimens including a chicken cage, a duck cage, a chopping block and a pigeon cage were detected positive of carrying H9 avian influenza virus. In the past month, no sick, dead birds or ILI cases among the workers were discovered. 21.2% (7/33) of the stalls did not follow the set regulations for prevention. 10.3% (4/39) of the stalls had the cages cleaned, 4 days after the inspection. 3.7% (2/54) of the workers wore masks and 40.7% (22/54) of them wore gloves during the slaughtering process. 102 bird feces specimens were tested negative on H7N9 virus. No pneumonia cases with unknown reason were identified. From April 3(rd) to 17(th), we found 26 severe pneumonia cases but with negative results on influenza A (H7N9).

CONCLUSIONAccording to the data and information from 1) lab tests, 2) pneumonia cases with unknown reasons under the surveillance system, 3) the identification of severe pneumonia cases, and 4) preventive measures and actions taken by the workers, we inferred that no H7N9 virus or related cases were found prior to April in Guangzhou. However, the risk of H7N9 epidemic does exist because of the following reasons:1) improper market management process, 2) negligent behavior of the workers and 3) potential trend of the national situation, suggesting strategies related to poultry markets management, health education and preventive measures against the avian influenza need to be strengthened.

China ; epidemiology ; Humans ; Influenza A Virus, H7N9 Subtype ; Influenza, Human ; epidemiology ; prevention & control ; virology ; Risk Assessment

OBJECTIVETo construct the recombinant adenovirus vector expressing human endostatin.

METHODSHuman endostatin gene extracted from pGEM-T Easy vector containing the target gene fragment was successfully amplified using PCR and cloned into pShuttle2 vector. The target gene was subcloned into an adenovirus vector and the resulted recombinant adenovirus (Ad-hEndo) was linearized before transfected into HEK 293 packaging cells. The Ad-hEndo recombinant adenovirus was efficiently amplified in 293T cells and purified by CsCl density centrifugation, and the titer of the virus was determined.

RESULTSThe amplified hEndostatin cDNA was verified by PCR and sequencing, and the resulted virus titer reached 5.2 x 10(9) pfu/ml.

CONCLUSIONThe recombinant adenovirus containing human endostatin gene has been successfully constructed, which may provide important basis for gene therapy research for angiogenesis-dependent diseases.

Adenoviridae ; genetics ; Cell Line ; Cloning, Molecular ; DNA, Recombinant ; genetics ; Endostatins ; biosynthesis ; genetics ; Genetic Vectors ; genetics ; Humans ; Recombinant Proteins ; biosynthesis ; genetics ; Transfection

OBJECTIVETo investigate the effect of small interference RNA (siRNA) targeting nuclear factor-kappaB (NF-kappaB) on endometriosis.

METHODThe eutopic endometrium of women with endometriosis were transplanted into the nonvascular region of 8-day-old chicken embryo chorioallantocic membrane (CAM), and the effects of NF-kappaB p65 siRNA on the vascularization and endometriotic lesion formation were tested with proper controls.

RESULTSTransplantation of the endometrium onto the CAM resulted in a strong angiogenic response in the chicken tissue. The angiogenesis was significantly reduced and endometriotic lesion formation significantly suppressed with siRNA targeting NF-kappaB in comparison with the control group.

CONCLUSIONSThe NF-kappaB pathway is involved in the development of endometriotic lesions in vitro, and NF-kappaB gene silencing reduces endometriotic angiogenesis and promotes cell apoptosis in the endometriotic lesions, suggesting that NF-kappaB might be a good target for endometriosis treatment.

Animals ; Chick Embryo ; Chorioallantoic Membrane ; blood supply ; metabolism ; Endometriosis ; genetics ; physiopathology ; Female ; Humans ; NF-kappa B ; deficiency ; genetics ; Neovascularization, Pathologic ; genetics ; RNA Interference ; RNA, Small Interfering ; genetics