Objective To evaluate the effect of comprehensive prevention and control of soil?transmitted nematodiasis in Runzhou District Zhenjiang City Jiangsu Province from 1997 to 2012. Methods The comprehensive prevention and control measures included the helminthicide health education improvement of water supplier and harmless toilets and these mea?sures were implemented continuously. At the same time the infection rates of soil?transmitted nematodes the local economic in?dicators and the coverage rates of tap water and harmless toilets were surveyed. Results The mass chemotherapy was per?formed for 202 100 person?times and the diagnosed chemotherapy was performed for 2 006 person?times in Runzhou District from 1997 to 2012. The awareness rates of health knowledge were 57.18%in 1997 and 95.62%in 2012. The coverage rates of tap water and harmless toilets were 10.14%and 10.21%in 1997 and 100.0%and 90.38%in 2012 respectively. There were negative correlations between the awareness rate of per capita GDP per capita net income coverage rates of tap water cover?age rates of harmless toilets health knowledge and the infection rate of soil?transmitted nematodes respectively rper capita GDP=-0.526 P 0.05 rper capita net income=-0.671 P 0.01 rcoverage rates of tap water=-0.936 P 0.01 rcoverage rates of harmles toilets=-0.922 P 0.01 rawarenes=-0.774 P 0.01 . The statistical analysis showed that the infection rate of soil?transmitted nematodes had a downward trend as an expo?nential curve in Runzhou District from 1997 to 2012 y=42.031 7e?0.357 6x R2=0.803 6 F=57.28 P=0.000 . The infection rate of degradation by an annual rate was 29.18%. The infection rate in farmers was significantly higher than that in students χ2=17.998 P 0.01 . There was no significant difference between men and women in the infection rate of soil?transmitted nema?todes χ2=3.627 P=0.057 . Conclusion The comprehensive prevention and control measures and the development of so?cial economy contribute to the steady decline of soil?transmitted nematode infections.

Background The underlying mechanism of choroidal neovascularization(CNV) is multifactorial and complex.Focal adhesion kinase(FAK) plays a crucial role in controlling essential cellular processes and influencing distinct steps of the angiogenic response.But to our knowledge,seldom study on the effect of FAK on CNV formation has been reported previously.Objective In this study,the effect of several CNV risk factors on the expression of FAK in cultured retinal pigment epithelium(RPE) cells was investigated to illuminate effect of FAK on CNV.Methods Human RPE cells were isolated from donor eyes and exposed to H2O2,swallow of outer segment of photoreceptors(POS) and extracellular matrix(ECM) separately with the treating as follows:RPE cells were co-cultured with 10,20,50 and 100μmol/L H2O2 for 20 days;POS(1×106/ml) were co-cultivated with RPE cells for 20 days(setting control group,POS group,hypoxia group with 200μmol/L CoCl2,and POS+hyoxia group);RPE cells were cultured on the plates coated with 100mg/L fibronectin(FN),laminin(LN) or collagen typeⅠfor 30minutes or 1 hour.The expression of FAK and pFAK in RPE cells were examined by Western blot analysis.Results FAK was highly expressed in the 20μmol/L and 50μmol/L H2O2 groups compared with control group(P＜0.01);while he expression level of pFAK was reduced after treated with H2O2 in comparison with the control group(P＜0.01).After cultured with POS for 20 days,the undigested lysosome could be observed in RPE cells.The expressions of FAK and pFAK in RPE cells were not significantly changed between control group and POS groups(P＞0.05),but those in hypoxia group were significantly up-regulated in comparison with control group(P＜0.01).Compared with the hypoxia group,the expression amount of pFAK was elevated in POS+hyoxia group(P＜0.01).In comparison with control group,the increased pFAK expression was seen in FN,LN and collagen typeⅠtreating for 1-hour groups(P＜0.05,P＜0.01).Conclusion FAK pathway participates in several CNV-initiated signaling,such as H2O2,POS and ECM,in cultured RPE cells.It is reasonable to believe that FAK potentially plays an important role in CNV-dependent disorder.

Objective To explore the clinical effect of suprapubic small cut method combined with transurethral resection prostate(TURP) on the treatment of benign prostatic hyperplasia(BPH) complicated with bladder stones.Methods Sixty patients with BPH complicated with bladder stones ≥ 3 cm in the People's Hospital of Futian Affiliated to Guangdong Medical College from January 2013 to September 2014 were selected as the study group,and another 60 patients with BPH complicated with bladder stones＜3 cm during the same period were selected as the control group.The cases in the study group were treated with suprapubic small cut method combined with TURP,and the cases in control group were treated with transurethral method combined with TURP.The intraoperative indicators (including the time used for crushed stone,total operation time,blood loss,conversion to laparotomy,blood transfusion and bladder perforation),residual bladder stones and complications of postoperative were compared.Results The operations of the two groups of patients were successfully,and there was no conversion to laparotomy and either bladder perforation.The stone removal time and total operative time of patients of the study group were shorter than of the control group,the difference was statistically significant((12.20±3.55) min vs.(24.05±7.68) min,(62.31± 10.49) min vs.(82.46± 16.75)min;t =10.849,7.897;P＜0.001).The intraoperative blood loss and the cases of blood transfusion of patients of the study group were less than the control group,but the prevalence of urinary tract infection were higher(6vs.4),but the difference was not statistically significant(P＞0.05).Residual stones were more commonly in the control group than in the study group (study group:0,control group:6 cases),the difference was statistically significant(x2 =6.316,P=0.012).Conclusion BPH complicated with bladder stones can be treated by the suprapubic small cut method combined with TURP or transurethral method combined with TURP,but suprapubic small cut method combined with TURP is safer and more effective,which is worthy of popularization and application in clinic.

Objective To evaluate the effects of compound glycyrrhizin on the percentage of Th17 cells and expression of interleukin(IL)-17A in peripheral blood of patients with psoriasis vulgaris, and to explore their relationship with therapeutic effects. Methods A total of 30 patients with mild to moderate progressive psoriasis vulgaris were randomly and equally divided into two groups:group 1 treated with compound glycyrrhizin injection, antihistamines and topical drugs, group 2 treated with antihistamines and topical drugs. Twelve healthy human subjects served as the control group. Blood samples were collected from the patients 1 day before start of treatment and after 3 weeks of treatment, and from the control group. Flow cytometry and enzyme-linked immunosorbent assay (ELISA)were performed to determine the percentage of Th17 cells and expression level of IL-17A respectively in the peripheral blood samples. Results Before the treatment, the percentage of Th17 cells and expression level of IL-17A were both significantly higher in the two patient groups than in the control group (all P<0.05). After the treatment, group 1 showed significant decreases in the percentage of Th17 cells and expression level of IL-17A compared with those before the treatment (both P<0.05), while no significant differences were observed in group 2 between pre-and posttreatment IL-17A expression level or Th17 cell percentage (both P>0.05). Furthermore, both Th17 cell percentage and IL-17A expression were significantly different between the two patient groups after the treatment (both P< 0.05). Conclusion Compound glycyrrhizin may treat psoriasis vulgaris by regulating Th17 cell percentage and IL-17A expression in peripheral blood.

Objective To investigate the role of immunohistochemistry in the differential diagnosis between small cell lung carcinoma (SCLC) and non-small cell lung carcinoma (NSCLC).Methods The protein expressions of CD56, Syn, TTF1, CK5/6, CK14, P63, CK7, and NapsinA in percutaneous lung biopsy and bronchoscopic biopsy specimens which were suspected as SCLC were examined by immunohistological streptavidin-peroxidase ( SP) method to analyze the pathological characteristics , immunological pheno-typical features , and differential diagnosis between SCLC and NSCLC .Results Among 72 cases of lung cancer patients ,there were 27 cases of SCLC,17 cases of low differentiated squamous cell carcinoma ( SCC) and 28 cases of low differentiated adenocarcinoma ( ADC) .Conclusions It is the different therapy between SCLC and NSCLC , immunohistochemistry analysis of biopsy can provide ac-curate diagnosis of SCLC and NSCLC , which will result in less misdiagnosis and provide an important valuable in the selection of clini -cal treatment protocols for lung cancer patients .

Objective To investigate the effect of parecoxib on postoperative hyperalgesia induced by remifentanil-based anesthesia.Methods One hundred ASA Ⅰ or Ⅱ patients,aged 21-64 yr,weighing 50-80 kg,undergoing elective laparoscopic operation,were randomly divided into 5 groups ( n =20 each):parecoxib group (group P),small dose remifentanil group (group S),large dose remifentanil group (group L),small dose remifentanil + parecoxib group (group SP) and large dose remifentanil + parecoxib group (group LP).Parecoxib 40 mg was injected intravenously at 30 min before anesthesia in groups P,SP and LP.Anesthesia was induced with midazolam0.05 mg/kg,etomidate 0.2 mg/kg,cisatracurium 0.15 mg/kg and remifentanil 1 μg/kg (fentanyl 4 μg/kg in group P).The patients was tracheal intubated and mechanically ventilated.PETCO2 was maintained at 35-45 mm Hg.Anesthesia was maintained with infusion of remifentanil at 0.05 μg·kg-1 ·min-1 (in groups S and SP) or at 0.3 μg· kg- 1· min- 1 (in groups L and LP) combined with inhalation of sevoflurane and infusion of cisatracurium at 0.12 mg·kg-1·h-1.At 30 min after operation,numeric rating scale (NRS) was used to assess the degree of pain at rest and during activity.Tramadol 1.5 mg/kg was injected intravenously after operation if needed.NRS scores were maintained ≤5.The use of tramadol and adverse effects during 24 h after operation were recorded.Results Compared with group P,NRS scores at rest and during activity were significantly increased at 30 min after operation in groups S and L,the incidence of shivering and the number of patients who needed tramadol were significantly increased in group L,and no change was found in NPS scores at rest and during activity at 30 min after operation,the incidence of adverse effects and the number of patients who needed tramadol in groups SP and LP.Compared with group S,NRS scores at rest and during activity at 30 min after operation,the incidence of shivering and the number of patients who needed tramadol were significantly increased in group L,NRS scores at rest and during activity at 30 min after operation were significantly decreased and no change was found in the incidence of adverse effects and the number of patients who needed tramadol in group SP.Compared with group L,NRS scores at rest and during activity at 30 min after operation,the incidence of shivering and the number of patients who needed tramadol were significantly decreased in group LP.Conclusion Intravenous injection of parecoxib 40 mg at 30 min before anesthesia can attenuate postoperative hyperalgesia induced by remifentanil-based anesthesia.

Objective To compare the effects of vitrification with slow-freezing on the developmental ability of day 3 cleavage stage embryos.Methods Patients who had no less than 4 high quality embryos were included in this study.These embryos were cryopreserved using the methods of vitrification or slow-freezing.In the eryopreserved embryo transfer cycles,the embryos which were cryopreserved using one of the methods were chosen randomly.The developmental ability of embryos was compared between these two groups.Results A total of 80 patients were included in this study with 160 embryos.In the group of slow-freezing,73(91%)embryos were survived and achieved 15(38%)clinical pregnancies.Among these,3 were twins and the implantation rate was 25%(18/73).In the group of vitrification,71(89%)embryos were survived and achieved 19(48%)clinical pregnancies.Among these, 9 were twins and the implantation rate was 39%(28/71),which was significantly higher than the slow- freezing group(P

Design of structurally-novel drug molecules with deep learning can overcome the technical bottleneck of classical computer-aided drug design. It has become the frontier of new technique research on drug design, and has shown great potential in drug research and development practice. This review starts from the basic principles of deep learning-driven de novo drug design, goes on with the brief introduction to deep molecular generation techniques as well as computational tools and the analysis on representative successful cases, and eventually provides our perspective for future direction and application prospect about this technique. This review will provide ideas on new technique research and references for new drug research and development practice to which this technique is applied.

OBJECTIVETo determine the possible difference in vasodialtation effect of quercetin and rutin.

METHODSThe isolated rat thoracic aorta was treated with phenylephrine (PE), and the effects of quercetin and rutin on the preconstricted aorta rings with or without endothelium were determined by organ bath technique. Nitric oxide synthase inhibitor L-N(G)-nitroarginine methyl-ester (L-NAME), guanylyl cyclase inhibitor methylene blue, cyclooxygenase inhibitor indomethacin were used to explore the mechanism.

RESULTSQuercetin (10-160 micromol/L) caused vasorelaxation of aorta rings preconstricted with PE in endothelium-intact and denuded aorta rings in a dose-dependent manner. Rutin(10-160 micromol/L) caused dose-dependent vasorelaxation in endothelium-intact rings preconstricted with phenylephrine, but not in denuded aorta rings. The maximal response (Rmax) values calculated from vasorelaxation curves of quercetin and rutin were (77.20+/-6.11)% and (44.28+/-7.48)%, respectively. There was no difference between median effective concentration (EC(50)) values of quercetin and rutin. Pretreatment with L-NAME (0.1 mmol/L) abolished the vasorelaxation by rutin,but did not influence the vasodilating effect of quercetin in endothelium-intact rings. Pretreatment with methylene blue (10 mmol/L) canceled the vasorelaxation both by quercetin and rutin. Pretreatment with indomethacin (10 micromol/L) attenuated the vasodilatation of quercetin, but did not affect the vascular effect of rutin.

CONCLUSIONThe vasodilatation effect of quercetin is more potent than rutin. The vasodilatation effect of quercetin might be mediated by guanylyl cyclase and cyclooxygenase-dependent pathway, while the vasodilatation by rutin might be via nitric oxide-guanylyl cyclase pathway.

Animals ; Aorta, Thoracic ; drug effects ; Dose-Response Relationship, Drug ; Guanylate Cyclase ; metabolism ; In Vitro Techniques ; Male ; Nitric Oxide ; metabolism ; Phenylephrine ; pharmacology ; Prostaglandin-Endoperoxide Synthases ; metabolism ; Quercetin ; pharmacology ; Rats ; Rats, Sprague-Dawley ; Rutin ; pharmacology ; Vasodilator Agents ; pharmacology

AIMTo investigate the relationship among sexual differences of motion sickness (MS), AVP levels of plasma and pituitary and the expression of pituitary V1b receptors for further understanding of the MS mechanisms.

METHODSThe conditioned taste aversion (CTA) of 0.15% saccharin sodium solution (SSS) was served as MS model. 98 (49 male and 49 female) rats were used in this experiment, 50 for the detection of the AVP level in plasma and pituitary with radioimmunoassay (RIA), 12 for the observation of the number of V1b receptor-positive neurons in the pituitary with the fluorescence immunohistochemistry method, the rest for the evaluation of the expression of V1b receptor in the pituitary by Western blot.

RESULTSWith regard to male rats, decrease of the drinking volume of 0.15% SSS was greater in female rats after rotatory stimulation. The plasma AVP concentration of female rats was significantly higher than that of males under normal conditions, but reduced significantly after rotatory stimulation. However, no significant change was found in male rats. In addition, the pituitary AVP level of the female rats was significantly higher than that of the male rats under normal conditions, but decreased at 8 h and significantly at 24 h after rotation. Similarly, the pituitary AVP level of male rats also decreased significantly at 8 h after rotation, but this decrease was not comparable to that of the females. At 24 h after rotation the pituitary AVP level almost recovered in male rats. In the pituitary, which was related to the stress response, the V1b receptor-positive neurons and the expression level of V1b receptor in female rats were significantly higher than those of the male rats, but they decreased significantly after rotation, while no apparent change was detected in the male rats.

CONCLUSIONThe changes of plasma and pituitary AVP and V1b receptor level of the pituitary after rotatory stimulation are different between male and female rats and the AVP secretion of the pituitary may be involved in the sexual difference in susceptibility to motion sickness.

Animals ; Arginine Vasopressin ; blood ; Female ; Male ; Motion Sickness ; metabolism ; Pituitary Gland ; metabolism ; Rats ; Rats, Sprague-Dawley ; Receptors, Vasopressin ; metabolism ; Sensitivity and Specificity ; Sex Characteristics