Objective To observe secretive ability of three C-C chemokines, macrophage inflammatory protein-1?(MIP-1?),MIP-1? and regulated-upon activation.normal T-cell expressed and secretory factor(RANTES)by lympocytes and moncytes of cord blood from chinese necnates and peripheral blood from chinese adults.Method Using Ficoll density-gradient centrifugation and gelatin-coated flask,the Iympocytes and monocytes were isolated from cord blood samples of seventeen Chinese neonates and peripheral blood samples of twenty Chinese adults.Purified lymphocytes and monocytes were incubated with PMA and LPS,respectively.Supernants were tested by ELISA for concentrations of MIP-1?,MIP-1? and RANTES.Results Concentrations of MIP-1?, MIP-1? and RANTES in cord blood lymphocyte and monocyte were (3920?730)pg/ml, (4910?590)pg/ml,(1470?410)pg/ml,(3240?980)pg/ml,(1960?1300)pg/ml and (240?120)pg/ml,respectively,and in adults peripheral blood were (6560?840)pg/ml,(5810?1150)pg/ml,(2250?570)pg/ml,(3010?1350) pg/ml,(2280?870)pg/ml,(690?430)pg/ml,respectively.Cord blood lymphocyte and monocyte showed diminished ability to secrete RANTES than adult peripheral blood.Conclusions The diminished RANTES secretion of cord blood lymphocyte and monocyte may be releted to the pathogenesis of Chinese neonatal HIV infection,and indicated some immunotherapies are feasible for preventing neonate from HIV mother-to-child transmission.

Objective: To observe the clinical effect and safety of Feilaoling preparation which is a traditional Chinese prescription that can improve immune function in 60 cases of untreated pulmonary tuberculosis patients. Methods: Patients with pulmonary tuberculosis (120 cases) were randomly divided into treatment (n = 60) and control (n = 60) groups. The patients in the treatment group were treated with both Feilaoling preparation and conventional chemotherapy, and the patients in the control group were only treated with conventional chemotherapy. The clinical effects, lesions absorption, and side effects of drugs were observed in two groups. Results: The clinical symptoms and signs in treatment group were better than those in control group. Sputum negative conversion rates of two months and six months and cavitates closure have no significant difference between two groups (P > 0.05). But the hemoptysis treatment, lesions absorption improved, incidence rates of liver damage, and white blood reduction in two groups were all effectively changed, the treatment group was better than the control group (P < 0.05). The treatment group has a significant change compared with the control group (P < 0.01) in the incidence rate of severe gastrointestinal discomfort. Conclusion: Feilaoling preparation has a reliable effect on promotion lesions absorption and reducing the side effects of Western anti-tuberculosis, with certain clinical value.

In recent years,health economics developed quickly,which attracted both international academic and public interested.Compared with the developed countries,although the study of health economics in China started relatively slow,it has already attracted more and more attention by the academic along with the rapidly social development.With the support from international organizations and academic institutions,China had gradually established its health economics research net from 1990s,the research system had been improved and a serious of research achievements had already playedmore important role in the procedure of government decision making.It summarized the research progress in the field of international and China's health economics so as to provide references for research and policies.

Objective To study the correlation between laryngopharyngeal reflux (LPR) and voice disorders . Methods One hundred and three patients with reflux -related symptoms were recruited .The patients were evalu-ated with reflux symptom index (RSI) ,reflux finding score (RFS) evaluation and 24-hour dural-probe pH moni-toring .Eighty -nine cases with voice disorders were divided into 5 groups :vocal process granuloma (n=18) chron-ic pharyngolaryngitis (n=19) ,vocal polyps (n=15) ,vocal fold leukoplakia (n=21) and Reinke's edema (n=16) . The other 14 patients without voice disorders were the control subjects .Results According 24-hour dural -probe pH monitoring assessments ,48 .3% of the patients with voice disorders showed LPR positive .The positive rate in the vocal fold leukoplakia group (71 .4% ) and Reinke's edema group (75 .0% ) were significantly higher than the control group (35 .7% ) .RSI and RFS of the patients with Reinke's edema were both significantly higher than the control group(P=0 .020 ,P=0 .009) .RSI of the patients with chronic pharyngolaryngitis were significantly higher than the control group (P=0 .019) .The acid reflux episodes ,acid reflux time which except in the supine position of the vocal fold leukoplakia group were significantly higher than the control group .The acid reflux episodes ,acid ex-posure and acid reflux time which all except in the supine position of the Reinke's edema group were significantly higher than the control group .Conclusion The correlations between Reinke's edema ,vocal fold leukoplakia and LPR were stronger .In these two groups ,the acid reflux episodes were higher and acid reflux times were longer .

Objective To investigate the influence of synergistic effect of estradiol and testosterone on the level of lipids and coagulation function in mice with hyperlipidemia .Methods We established a maouse model in hyperlipidmia , giving estradiol (1 μg/d), testosterone (7 μg/d) or estradiol combined testosterone (1 μg/d E2 +7Tμg/d), respectively.After 14 weeks, we collected the blood from the mice , separated the serum to detect the lipids level , separated the plasma to test the coagulation function .Result Compared with controls , after high-fat diet , the serum level of total cholesterol ( TC) , triglyceride ( TG) , high density lipoprotein ( HDL) were significantly increased , PT and APTT were shorter ( P<0.05 ).However, after treating with estradiol combined testosterone , compared with cases, the serum level of C, TG and HDL were lower and PT , APTT were longer ( P <0.05 ), had no significance with controls . Conclusion The synergistic effect of estradiol and testosterone can mediate the lipids , reduce the level of LDL , regulate the coagulation function , reduce the risk of coronary heart disease , and also provide a new strategy for hormone therapy in coronary heart disease .

Objective To investigate the anti-fatigue and anti-hypoxia effect of fermented Paecilomyces hepiali myceli-um (PHM) and to explore its mechanism.Methods Seventy-two naive Kunming male mice were randomly divided into Home, vehicle, modafinil( Mode) , low-dose PHM, moderate-dose PHM, and high-dose PHM groups.All mice were ad-ministrated with the drug or vehicle twice a day during a 14-day period.Except for the Home group, each groups was forced into the wheel fatigue device to receive a climb-run training at the time points of 40 min, 8 h, 24 h and 48 h, and to re-ceive an exhaustive training at the time point of 72 h after the last administration.The number of electric shocks was recor-ded during each training and the levels of muscle glycogen, liver glycogen, serum urea nitrogen, serum lactic acid, serum creatine kinase and blood ATP were detected after the exhaustive training using commercially available kits.In addition, 96 naive Kunming male mice were randomly and equally divided into the vehicle, low-dose, moderate-dose and high-dose PHM groups.Twelve mice in each group were chosen for the normal pressure anti-hypoxia experiment and the other 12 mice were used for the NaNO3 poisoning experiment.Results Compared with the vehicle groups, the PHM group showed a sig-nificant decrease in the number of electric shocks, improvement in biochemical parameters associated with fatigue, and an increased survival time in the anti-hypoxia and the NaNO3 toxicity tests.Conclusion PHM is potentially an effective alter-native for wild Cordyceps in the treatment of fatigue and hypoxia.

Objective To investigate the value of CARE Dose 4D technique in decreasing radiation dose and improving image quality of multi-slice spiral CT in adult chest scanning.Methods 100patients of chest CT scanning were equally divided into study group and control group randomly.CARE Dose 4D Technique was used in study group.Effective mAs value,volume CT dose index (CTDIvol) and dose length product (DLP) were displayed automatically in machine while chest scanning; those values and actual mAs value of every image were recorded respectively.The image quality at apex of lung,lower edge of aorta arch,middle area of left atrium and base of lung on every image of 400 images was judged and classified as three level (excellent,good,poor) by two deputy chief physicians with double blind method,the image noise at corresponding parts was measured.Results While setting 80 mAs for quality reference mAs,the effective mAs value in study group most decreased 44 mAs than control group with an average decrease of 9.60( 12.0% ) ,CTDIvol with 4.75 mGy with an average decrease of 0.95 mC y( 11.0% ) ,DLP 99.50% in study group,with 98.0% in control group.But it was higher at apex of lung and base of lung,lower at middle area of left atrium,and similar at lower edge of aorta arch in study group than contrast group.The image noise were lower at apex of lung and base of lung in study group than control group (t =6.299 and 2.332,all P ＜ 0.05 ) ,higher at middle area of left atrium in study group than control group (t=3.078,P ＜0.05) and similar at lower edge of aorta arch in study group than control group (t =1.191,P ＞0.05).Conclusions CARE Dose 4D technique provides a function regulated mAs real-time on line,it not only raises utilization rate of radiation and decreases radiation dose,but also promises and increases image quality in chest CT scanning,and has some clinical significance.

Animals ; Electromagnetic Fields ; adverse effects ; Female ; Gravidity ; radiation effects ; Humans ; Maternal Exposure ; adverse effects ; Pregnancy

OBJECTIVETo summarize and analyze the cone-beam CT (CBCT) imaging features of ameloblastomas for clinical preoperative diagnosis.

METHODSThirty-seven cases with complete data proven by pathology were retrospectively studied for distinct CBCT features.

RESULTSOf the 37 cases, 31 were primary and 6 were recurrent. On CBCT images, the 37 cases were composed of 36 cases (97.3%) of intraosseous lesions (17 cases of multilocular lesions, 17 cases of unilocular lesions, and 2 cases of honeycomb lesion) and 1 case (2.7%) of extraosseous lesion (soft tissue lesion). Of the 17 multilocular cases, 15 (88.2%) showed tongue-shaped crests in lesions. Thirty-four cases (94.4%) showed apparent expansible change toward lip/buccal and (or) palatal/lingual sides ofjaw, with partialcortical erosion.

CONCLUSIONCBCT imaging yields accurate three-dimensional images of lesion shape and structure. Therefore, CBCT can be usedfor the clinical diagnosis and surgical assessment of ameloblastoma.

Acellular dermal matrix(ADM) is a special biological material that contains only collagen,elastin and other extracellular matrix.ADMs are made by special methods of separating skin epidermis and dermis,and removing Laugerhans cells,vascular endothelial cells,fibrohlasts cells and major histocompatibility complex (MHC)within the dermis.ADM causes no graft rejection,and provides a good scaffold for tissue reconstruction,angiogenesis and implantation of host cells.The preparation process of ADM includes the separation of epidermis and dermis,decellularization,perforation and freeze-drying.According to the classification method,ADMs can be classified into allogeneic and xenogeneic ADM,patch and injection type ADM,as well as cross-linked and non-crosslinked ADM,which can meet various clinical requirements.ADM is widely used in surgical field,such as treatment of deep burn wounds,breast reconstruction after masteetomy,oral mucosa repair,abdominal wall hernia repair,and treatment of vocal cord paralysis.Due to the characteristics ADM,its application prospect is considerable.The research progress of ADM in recent years was summarized.