Objective To analyze comprehensively the investigation data of the national schistosomiasis surveillance sites from 2005 to 2007, in order to provide the evidence for mastering the endemic situation and pattern of schistosomiasis. Methods Eighty surveillance sites were selected, and the investigation data about schistosomiasis in residents and domestic animals and the status of Oncomelania snails in these sites were collected and analysed. Results From 2005 to 2007, the total infection rate in residents decreased by 54.90% (average decreased by 18.30% each year). The sites where the infection rate in residents was higher than 5% decreased year by year. In 2007, there was no site where the infection rate in residents was higher than 5% in all the 80 surveillance sites. All the infection rates in different age groups decreased for three years in succession, and the peak appeared at 30-50 age group in 2005, but moved to 50-60 age group in 2007. The infection rate in domestic animals decreased by 69.22%, and the infection rate in cattle and buffaloes remarkably decreased. For the three years, the areas with snails reduced by 8.84%, and the areas with infected snails reduced by 53.23%. The average densities of living snails and infected snails decreased year by year, but the infection rate of snails fluctuated during the three years. Conclusion The endemic situation of schistosomiasis in residents and cattle, and the status of snails, in general, remarkably decreased from 2005 to 2007.

Objective To survey and understand the endemic situation of schistosomiasis in China in 2007,so as to provide the evidence for decision-making of schistosomiasis control.Methods The data of investigation on schistosomiasis in residents,domestic animals,Oncomelania snails and other relative factors were collected and analysed in the 80 national surveillance sites,2007. Results In 2007,the total infection rate of the residents was 0.92%,which decreased by 42.31% compared with that in 2006. There was no site where the resident infection rate was more than 5% among all the 80 surveillance sites. The peak of the resident infection rate with different age groups appeared at the 50-60 age group. The cattle and buffalo were still the main infection targets. The infection rate of domestic animals was remarkable decreased. The density of living snails was 0.430 0/0.1 m2. The percentage of frames with living snails was 0.06%. The density of infected snails was 0.000 7/0.1 m2,and the snail infection rate was 0.16%. All of them were decreased compared with those of 2006. Conclusion The schistosomiasis endemic in the residents,cattle and snails was remarkable decresed in the national surveillance sites,2007.

Objective To understand the endemic situation of schistosomiasis among 80 national surveillance sites for schistosomiasis in 2006,so as to provide scientific evidence for making out schistosomiasis prevention and control measures. Methods According to the national surveillance protocol, the endemic situation of schistosomiasis in residents and livestock, and the status of Oncomelania snails and other factors were investigated in the 80 national surveillance sites for schistosomiasis, and all the data were collected and analysed. Results Among the 80 national surveillance sites,the average positive rate of residents with sera examination was 13.60% and the average positive rate with stool examination was 1.59%.The average positive rate of floating population with sera examination was 5.79%. There were 143 advanced patients among the national surveillance sites, and 12 acute patients were reported in 2006, but no breaking-out epidemic reported. The proportion of domestic animals stable breeding were about 4.74% of 5 365 examined animals in 2006, and the others were not.The infection rate of domestic animals was 5.93% that declined by 34.49% compared with that in 2005 and especially for the infection rate of cattle and sheep. A total of 7 429.63 hm2 of areas were surveyed. The areas of snail habitats, infected snail habitats and the new snail habitats were 4 994.01,621.75 hm2 and 21.75 hm2,respectively. The density of living snails and infection rate of snails were 0.544 8/0.1 m2 and 0.37%, which increased compared with infection rate of 0.26% in 2005. Conclusion The endemic situation of residents, cattle and snail habitats declined in 2006 compared with those in 2005 in the national surveillance sites.

Female ; Genetic Predisposition to Disease ; Hepatitis B ; genetics ; Hepatitis B virus ; Humans ; Polymorphism, Genetic ; Pregnancy ; Pregnancy Complications, Infectious ; virology ; Promoter Regions, Genetic ; genetics ; Tumor Necrosis Factor-alpha ; genetics

Objective To survey and understand the endemic situation of schistosomiasis among 80 national surveillance sites in China in 2008, so as to provide the evidence for decision-making of schistosomiasis control. Methods According to the National Surveillance Protocol for Schistosomiasis, the data of schistosomiasis in residents, domestic animals and Oncomelania snails and other relevant factors were collected and analyzed in the 80 national surveillance sites. Results Among the 80 national surveillance sites, the average positive rate of residents with sera examination and the average infection rate of the residents were 9.86% and 0.67% , respectively, and the infection rate of domestic animals was 1.62% , all remarkably decreased compared with the rates of 2007, but the proportion of domestic animals stable breeding was only 6.07% . The areas of infected snail habitats and the new snail habitats were 177.70 hm~2 and 7.64 hm~2, respectively. The mean density of living snails and infection rate of snails were 0.32/0.1 m~2 and 0. 15% , respectively. Conclusions The endemic situation of residents, domestic animals and snails decreased in 2008 compared with those in 2007, and domestic animals are still the main infection sources of schistosomiasis, the management of domestic animals need to be further strengthened, meanwhile the surveillance and control of snails should be focused on.

Butyric acid can be used to produce cellulose butyrate fiber and ester derivatives,and to be applied in foodstuffs and perfume industries.Recent researches have found that butyric acid is a preferred carbon source for colonic epithelial cells,and can inhibit histone deacetylase,showing great anticancer potentials.With more and more functions of butyric acid being found and applied in bio-related fields,and with consumer's growing preference to bioproducts,biotechnological production of butyric acid will receive more competence than petroleum-based chemical synthesis.Low product concentration and poor selectivity are presently the main restricting factors.Workers have made considerable progress on more cheep carbon sources,optimization of fermentation process,simplifying downstream processing,and genetic engineering of producing strains.Any achievement on these aspects in the future can contribute to put fermentation of butyric acid into industry.

The leaves of Rumex dictyocarpus Boiss et Buhse are used for treatment in acute abdomen. From this plant four constituents have been isoiated and identified as emodin、chrysophanol、quercetin、quercitrin by chemical and spectroscopic methods. These constituents were known to possess antibacterial, anti-inflammatory or hemoslatic actions, it seems that the clinie effects are related to the presense of these constituents.

Objective To investigate the efficacy and the mechanism of different dose hepatitis B immunoglohulin(HBIG)on prevention of HBV intrauterine infection and HBV S gene mutation. Methods HBV carrier mothers were randomly divided into three groups.Eighty-one HBsAg carrier pregnant women were divided into HBIG A group.HBIG B group and control group.Each subject in the HBIG A group received 200 U or 400 U(for HBsAg and HBeAg double positive carrier)intra muscularly at 3,2,1 month before delivery.Each subject in the HBIG B group received 200 U intra muscularly at 3,2,1 month before delivery.The subjects in the control group did not receive any treatment.Maternal blood samples were taken before HBIG injection and at delivery.Neonatal blood samples of all newborn infants after birth were taken before immunopropbylaxis.Their sera were ob tained to test HBV markers by enzyme immunoassay(EIA)and HBV DNA by fluorescence quantita- tive polymerase chain reaction(FQ-PCR),then to amplify and sequence HBV S gene region.Results The rate of HBV intrauterine infection in the HBIG group(14.5%)was lower than that in the control group(35.7%)(X~2=4.896,P=0.027).The rate of HBV intrauterine infection of newborns from HBsAg and HBeAg double positive carrier mother in the HBIG A group(37.5%)were lower than control group(100.0%)(X~2=7.273,P=0.007),while the rate was no different in the HBIG B group(71.5%)and the control group(X~2=2.637,P=0.104).Maternal HBsAg titer and HBV DNA level were of no difference among three groups before HBIG injection.Maternal HBsAg titers and HBV DNA levels of the HBIG A group were lower than those of the HBIG B group and the con- trol group at delivery.Among the 26 neonatal serum samples in the HBIG A group,10(38.5%)were positive for anti-HBs,while in the HBIG B group and in the control group,no neonatal serum sam- ples was positive.There was no significant difference of nucleotide and amino acid changes in the S gene between the HBIG group and the control group.Conclusions HBV infection in the uterus may be interrupted by injection HBIG intramuscularly before delivery.More efficacy would be found using variable HBIG dose according to different HBV virema and must be once more again injected just he- fore one week of delivery;anti-HBs transported to the fetus via the placenta and it's may be the im- portant mechanism of HBIG prevention.Asymptomatic HBsAg carrier mother received injections of HBIG before delivery should not influence HBV S gene mutation.Gene mutation of HBV is not the main factor in intrauterine transmission of HBV.

Acupoints are surface reaction and treatment spots under the pathological conditions which have functions of diagnosis and treatment. For the study of acupoints, we can carry it out from the aspects of structure and function. The two aspects have a close relationship. Structure is the material basis of function, while function is the manifesta-tion of structure. Therefore, the study of acupoints is not only significant to reveal the essence of acupoint, but also has enormous value in the guidance of acu-moxibustion for clinical practice. Staring from the normality of structure and variability of function, we explored the essence of acupoints, and further revealed ordered regulation rule and its biological basis, so that the essence of acupuncture points will be illustrated with scientific evidences.