Important papers representing the advances in AIDS vaccine research were retrieved from Web of Sci-ence using HistCite.The citation chronological chart was plotted by analyzing the relation between their citation fre-quency and cited frequency , and analyzing their citation sequences , which shows the development rules and histori-cal development path in AIDS vaccine research , and provides a certain reference value for the researchers in related fields at home and abroad.

Objective:To explore the feasibility and efficacy of short peptide enteral nutrition in preoperative bowel preparation for patients with gynecological laparoscopy.Methods:A total of 100 patients with gynecological laparoscopy were randomized into the trial group (n =50) and the control group (n =50) by using the random number table method.Patients in the study group received short peptide enteral nutrition for three days before operation without mechanical bowel preparation.Patients in the control group received traditional liguid diet and mechanical bowel preparation.The satisfaction of bowel preparation,postoperative anal exhaust time,hospitalization time and nutritionrelated parameters were compared between the two groups.Results:Doctor's satisfaction of bowel preparation in the study group was significantly higher than the control group (90％ vs 64％) (P ＜ 0.01).Postoperative anal exhaust time and hospitalization time were shorter in the control group (both P ＜ 0.05).The levels of postoperative albumin and hemoglobin in study group were significantly higher than the control group (bothP ＜ 0.05).Conclusion:Short peptide EN in preoperative bowel preparation of gynecological laparoscopy reveals a better efficacy and safety,a better recovery in postoperative intestinal function and nutritional status,and a shorter postoperative hospitalization time.It is well worth clinical promotion.

Objective To analyze the technology competition situation in vaccine industry of Jilin Province from the visual angle of patents. Methods The Dawei Patents Database-covered patents data of vaccine industry in Jilin Province were analyzed by patent mapping, patent metrical analysis and social network analysis respectively. Re-sults The vaccine industry in Jilin Province was in a growing stage with a good development situation and a solid strength in its research institutions. Conclusion Stress should be laid on city development-driven production, pro-duction-driven city development, and optimizing industry policies for the development of vaccine industry in Jilin Province. Scientific research institutions should strengthen their collaboration in professionals, technologies, funds and markets in order to make breakthroughs in technologies and realize the economic value of patents.

Objective To determine the nucleic acid content of hepatitis B virus with different clinical types of hepatits B before、after liver transplantation patients and explore the approach for detection of hepatitis B.Methods The HBV DNA content in before the liver transplantation, 7 day, 30 day, 90 day after the liver transplantation was detected with fluorescent quantitative PCR and HBV M with ELISA in 275 liver transplantation patients.Results HBsAg、HBcAb was positive of 275 patients;HBV DNA was positive in all HBsAg(+)/HBeAg(+)/HBcAb(+) specimens;79( 73.8 % )out of the 107 HBsAg(+)/HBeAb(+)/HBcAb(+) specimens; 48( 67.6 % )out of the 71 HBsAg(+)/HBcAb(+) specimens in before the liver transplantation.HBV DNA was negative in out of the 275 HBsAg(-) in 7 day after the liver transplantation; 48( 69.6 % ) out of the 69 HBsAg(+) in 30 day after the liver transplantation;104( 75.9 % ) out of the 137 HBsAg(+) in 90 day after the liver transplantation.Conclusions The recurrent hepatitis B were higher in the different clinical types of hepatitis B after liver transplantation,Detection of HBV DNA with fluorescent quantitative PCR can accurately reflect the state of HBV infection and HBV replication and HBV DNA was complementarity with HBV M,it can be used to guide clinical diagnosis with recurrent hepatitis B.

OBJECTIVE:To investigate the protective effect of Polydatin on acute lung injury following endotoxic shock in rats.METHODS:Using a rat endotoxic shock model,animals were randomly divided into4groups∶sham operation group,en?dotoxic shock group,Polydatin treatment group and Polydatin pretreatment group.MAPs(mean artery pressures)were mea?sured at given time points.At the end of the experiment,the serum,the lung tissue,and the bronchoalveolar lavage fluid(BALF)were collected.The levels of lung coefficient,lung penetrating index(LPI),the protein concentration of BALF and the content of NOS in the lung tissue were measured.Furthermore,the histologic changes of the lung were observed under light micro?scope.RESULTS:In addition to prohibiting the dropping of MAP,Polydatin could mitigate the acute lung injury induced by endotoxin which increased the levels of lung coefficient,LPI,the protein concentration of BALF and the content of NOS in lung tissue.Enough morphological evidence could be found in pathological sections.Especially,the protective effects were more ob?vious in Polydatin pretreatment group.CONCLUSION:Polydatin has prophylactic and therapeutical effects on acute lung injury following endotoxic shock and the prophylactic effect is more marked than the therapeutic one.

A knowledge amount assessment index system was constructed by quantifying the knowledge-sharing will-ingness of staff in enterprises through case analysis according to the network centrality index. The effect of different staff on knowledge-sharing in enterprises was analyzed by calculating the index weight using the yaahp6 . 0 software and analyzing the correlation between its two factors.

Objective To study absorption characteristic of dioscin from Dioscorea nipponica Makino extract in rat intestine.Methods Single-pass intestinal perfusion (SPIP) model was used for rat in situ and HPLC was used to determine the concentrations of dioscin.The effects of different intestinal segments,drug concentration and P-glycoprotein (P-gp) inhibitor on intestinal absorption were investigated.Results Dioscin could be absorbed in the whole intestine,the absorption rate constant (Ka) and the apparent coefficient (Papp) of dioscin decreased following the sequence of ileum > duodenum =jejunum > colon.Absorption parameters of dioscin had no significant difference at different concentrations (40,80,120 mg·L-1).There were significant differences in Ka and Papp values between P-gp inhibitor group and no P-gp inhibitor group(P<0.05).Conclusion The saturate phenomena was not observed under the test range of drug concentration,and the absorption mechanism may be passive diffusion transport.Dioscin in Dioscorea nipponica Makino extract may be the substrate of P-gp.

Objective To investigate the effect of sciatic nerve injection of dexmedetomidine on the nociceptive behavior and spi-nal c-fos expression in formalin mice .Methods Adult male Kunming mice ,20-25 g ,were divided into 4 groups randomly :mice in group A and D were given an injection of NS (10 μL) and 0 .1 μg dexmedetomidine in 10 μL adjacent to the right sciatic nerve , sepretely .Mice in group B received intacutaneous injection of 10μL formalin(5% ) in the right hindpaws .Mice in group C were giv-en an injection of 0 .1 μg dexmedetomidine in 10 μL adjacent to the right sciatic nerve 15 min before formalin injection in the right hindpaws .Paw licking/biting time was counted every 5 min for an hour after hindpaw injections ,calculated pain score .1 hour after behavior tests ,the L4-5 of spinal cord were harvested to immunofluorescence for c-fos expression in the dorsal corn of spinal cord . Results Mice in group A、C and D showed no obvious foot licking/biting behaviors and a low level of c-fos expression in the dorsal corn of spinal cord .Compared with group A ,mice in group B displayed obvious two phases foot licking/biting behaviors(P<0 .05 , both in Phase Ⅰ and Phase Ⅱ) and a significant increasing expression of c-fos(P<0 .05) .Compared with group B ,dexmedetomi-dine injected to the adjacent of right sciatic nerve decreased the pain score and spinal c-fos expression in goup C(P<0 .05) .Conclu-sion Injection of dexmedetomidine to the right sciatic nerve alleviated intraplantar injected formalin-induced acute inflammatory pain ,and reduced the expression of spinal c-fos protein .

Objective To investigate the effects of matrix metalloproteinase-3 (MMP-3) in the development of neuropathic pain (NP) in rats.Methods One hundred and eighty male Wistar rats weighing 200-250 g were randomly divided into 4 groups (n =45 each):sham operation group (S group),NP group,MMP-3-siRNA group (Msi group) and MMP-3-siRNA negative control group (NC group).NP was induced by ligation of L5 spinal nerve (SNL).Lentivirus with MMP-3-siRNA was injected intrathecally after SNL in group Msi.Lentivirus with NC-siRNA was injected intrathecally after SNL in group NC.The mechanical pain threshold was measured at day 7,14 and 21 after SNL.The rats were then sacrificed after the last measurement of the mechanical pain threshold.The lumbar segment of the spinal cord (L4-6) was removed for determination of the expression of MMP-3 and TNF-a protein and mRNA by RT-PCR and Western blot.Results The mechanical pain threshold was significantly decreased and the expression of MMP-3 and TNF-α protein and mRNA was up-regulated at each time point in groups NP and NC as compared with group S (P ＜ 0.05).The mechanical pain threshold was significantly higher and the expression of MMP-3 and TNF-α protein and mRNA was lower at each time point in Msi group than in NP group (P ＜ 0.05).Conclusion Up-regulation of the expression of MMP-3 activates microglia and induces the release of TNF-α,resulting in NP in rats.

To investigate the relationship between the effects of arecoline hydrobromide on contraction of the smooth muscles in oncomelania foot, and explore the mechanism of arecoline hydrobromide in decreasing climbing adhesion and increasing snail－killing. 　Method: The in vitro experiment was used to observe the effects of arecoline hydrobromide on contraction activitive of foot smooth muscles of oncomelania. 　Results: With a concentration of 3×10-6mol*L-1, arecoline hydrobromide strengthened the contraction and increased the frequency of the contraction of the foot smooth muscles of oncomelania, which was antagonized by verapamil. The same concentration of arecoline hydrobromide enhanced the contraction of smooth muscles in Ringer's solution with ECTA but Ca2+, and this effect was antagonized by caffeine. The concentrations of 10－5 and 3×10－5mol*L-1 of arecolin hydrobromide blocked the effect of Bay K8644 in enhancing foot smooth muscle contraction, with a characteristic of concentration－dependence. 　Conclusion:Arecoline hydrobromide may block the calcium channel of the smooth muscles in oncomelania foot. This could provide an explanation why arecoline hydrobromide decreases the rate of oncomelania climbing adhesion and enhances snail－killing.