Objectives: To evaluate if the administration of an enteral diet supplemented with glutamine, arginine and ? 3 fatty acids modulates inflammatory and immune responses after surgery. Methods: Forty eight patients with gastrointestinal cancer randomised into two groups, one of which was given an isocaloric and isonitrogenous standard diet and the other group was fed the supplemented diet with glutamine, arginine and ? 3 fatty acids. The feeding was started within 48 hours after operation, and continued until day 8. All variables were measured before operation and on postoperative day 1 and 8. Immune response was determined by phagocytosis ability, respiratory burst of polymorphonuclear cells, total lymphocytes lymphocyte subsets, nitric oxide, cytokine concentration, and inflammatory responses by plasma levels of C reactive protein and prostaglandin E 2. Results:Tolerance of both formula diets was excellent. There were significant differences in the immunological and inflammatory responses between the two groups. In supplemented group, phagocytosis and respiratory burst after surgery were higher and C reactive protein level was lower ( P

Objective To evaluate the safety and effect of enteral nutrition support at early period after gastroenteric operation. Methods 62 patients with gastrointestinal cancer were divided into three groups randomly: control group, TPN group, and TEN group. Patients in TPN and TEN groups received 7 days nutritional support in isonitrogenous and isocaloric. The peripheral vein blood was sampled before operation and 7 day after that to observe nutritional status and T lymphocyte subsets, NK cells, and NK cell activity. Resalts There were no significant difference in the three groups in albumin and anthropomentric measurement, visceral proteins decreased in three groups in postoperative period, but the values of control group was more seriously than TPN or TEN groups (P<0.05). Mean nitrogen balance: - 8.6 ± 3.12g/day in control group, - 4.22 ± 2.02g/day in TPN group, - 3.88 ± 2.35g/day in TEN group (P<0.05). CD3 ,CD4 ,CD4/CD8, NK cells and NK cell activity decreased in postoperative period in three groups, but there are no significant ditference in three groups. Conelasions Enteral nutrition support at early period after gastroenteric operation is safety and effective.

AIM:To prepare a compound as the chemical reference substance of Guangjinqiancao Zonghuangtong Capsule.METHODS:To apply general column chromatography combined with preparative HPLC to isolate the target compound,to use analytic HPLC to determine the purity,stability and its content in the capsule,and to employ spectroscopic analysis (UV,IR,ESI-MS,1H-NMR,13C-NMR,DEPT,1H-13CCOSY,1H-1HCOSY,1DHOHAHA.1D.NOE,HMBC) to elucidate the structure of the isolated compound.RESULTS:The obtained compound was identified as isoschaftoside with the purity of over 99%, which was stable within 3 months at ambient temperature.As for isosehaftoside solution.it was stable within 8 h at ambient temperature.Its content in the capsule was above 3.0%.CONCLUSION:Isoschaftoside is a qualified reference substance for analytic assay ofGuangjinqiancao Zonghuangtong Capsule,and can be isolated from Desmodium styracifolium(Osb.)Merr.

Objectives:To evaluate if the administration of an enteral diet supplemented with glutamine,arginine and ? 3 fatty acids modulate the inflammatory and immune responses and the outcome after surgery. Methods:A prospective,randomized,double blind and clinical trial was performed.Eighty eight patients with gastrointestinal cancer were randomly divided itnto two groups.One group was given an isocaloric and isonitrogenous standard diet and the other was fed with the supplemented diet with glutamine, arginine and ? 3 fatty acids.Feedings were started within 48 hour after operation, and continued until day 8.All variables were measured before operation and on postoperative day 1,4 and 8.Blood was drawn at different time points to assess albumin, prealbumin and transferring.Immune responses was determined by phagocytosis ability,respiratory burst of polymorphonuclear cells, total lymphocytes, lymphocyte subsets, nitric oxide,cytokine concentration,immunoglobins,and inflammatory responses by plasma levels of C reactive protein and prostaglandin E 2. Results:Tolerance of both formula diets was excellent.There were significant differences in the immunological and inflammatory responses between the two groups.In supplemented group,the serum concentrations of IgA,IgG,IgM,phagocytosis and respiratory burst after surgery were higher and C reactive protein level was lower( P

Stem cells have self-renewal and differentiation potential.Cyclin-dependent kinase (CDK) plays an important role in promoting pluripotency and self-renewal.The crucial activity of S-phase,DNA replication,presents a unique opportunity during the cell cycle for the genetic and epigenetic regulation that may be involved in stabilizing the pluripotent state.It is also clear that Myc acts to coordinate both the cell cycle and the pluripotency transcription network in stem cells.Here we review the regulating mechanisms of stem cell cycles and pluripotency by CDK and Myc to help researchers obtain a better understanding of mutual regulation of the cell cycle and the pluripotent state by CDK and Myc which may be exploited in regenerative medicine.

Aim To apply stochastic resonance algorithm (SRA) to quantitative analysis of weak chromatographic signal, which was embedded in the noise. Methods Based on the theory of stochastic resonance (SR), a simple and effective SRA has been established to improve analytical detection limits of chromatographic analysis, which apply to enhance the signal to noise ratio by the optimization of the parameters and Runge-Kutta method, was established. The method was used to quantitative analysis of phenazopyridine in human plasma by HPLC/UV. Meanwhile this method is compared with HPLC/MS.Results By experimental chromatographic data sets, an excellent quantitative relationship between concentrations of phenazopyridine and their responses had been obtained. The concentration of phenazopyridine in plasma determined by HPLC/UV with SRA and HPLC/MS showed that there was no significant difference (P ＞ 0.05) between the two methods. Conclusion The new method was feasible.

Objective To detect different activated patterns of heavy smokers in different states as well as between smokers and non-smokers. Methods Seventeen subjects including 12 heavy smokers and 5 non-smokers (controls) were examined with functional magnetic resonance imaging (fMRI) performing smoking-related olfactory cue tasks. The data were processed with SPM2. These different patterns were compared between the two groups. Results When smokers were exposed to the smoking olfactory cue in the abstinent state, activation was found on the left superior frontal gyrus (BA8, 9, 10, 11), left middle frontal gyrus (BA8, 10, 11, 46), left inferior frontal gyrus (BA9), left medial frontal gyrus (BA6, 8, 10,11), right superior frontal gyrus (BA10), right middle frontal gyrus (BA8, 9), right inferior frontal gyrus (BA45, 47), right medial frontal gyrus (BA9, 11), left callosal gyrus (BA24, 31), right callosal gyrus (BA24, 37), right middle temporal gyrus (BA21) and both sides of the thalamus and cerebellum. When smokers were exposed to the smoking olfactory cue in the satiated state, activation could be found on both sides of the prefrontal lobe and cerebellar hemisphere, while there was no activation on the other brain regions. No activation was found on the whole brain of the nonsmokers,except for a little small volume active points appeared in individual subjects, possibly caused by the picture noise. Conclusion The Limbic system (cingulate cortex, thalamus) and the prefrontal lobe play an important role in the cue-induced smoking craving approved from the new perspective of the olfactory. It is feasible to research smoking addicts' brain activation and the role of neural mechanisms using olfactory stimulation with clinical 1.5T MRI equipment.

Objective To study the differentially expressed genes in the vascular tissue of diabetic gangrene toot and the possible mechanism of diabetic gangrene.Methods The differentially expressed genes in the vascular tissue of diabetic gangrene foots were screened by the functional classific gene chip.Reverse transcription polymerase chain reaction(RT-PCR) detection was used to verify the differentially expressed 3 genes.Results In the detected 113 genes,13 of the gene expression level increased more than 2 times,3 of the gene expression level decreased more than 2 times.Three genes were verified with RT-PCR detection,which were results similar to those with chip testing.Conclusions The abnormal expression in a variety of genes in tissues of vascular lesions plays an important role in the course of development and progression of diabetic gangrene.Analysis of differential gene expression can contribute to understanding of the possible mechanisms of diabetic gangrene.

Objective To evaluate the efficacy of low dose 5-fluorouracil (5-Fu) combined with triamcinolone in the treatment of keloids, comparing with results with use of triamcinolone treatment alone.Methods Patient records from 2012 to 2013 were reviewed.45 patients (56 keloids) were completely randomized into 2 groups.Low dose of 5-Fu combined with triamcinolone were used to treat keloids in group A, while triamcinolone alone was used in group B.The therapeutic effects were evaluated by the certification of excellent remission, remission, inefficacy and total efficacy.The results were analyzed with statistics.Results In group A (27 keloids), the excellent remission cases were 16 (59.3%), the remission cases were 9 (33.3%), and the inefficacy cases were 2 (7.4%).The total percentage of efficacy in group A was 92.6%.In group B (29 keloids), the excellent remission cases were 9 (31.0%), the remission cases were 12 (41.4%), and the inefficacy cases were 8 (27.6%).The total therapy efficacy percentage of group B was 72.4%.Both the total percentage of efficacy and the excellent remission percentage in group A were apparently higher than those of group B, and the differences between the two groups were of statistical significance (P<0.05).The recurrence rates of group A were 3.7% (one case) while that of group B were 24.1% (7 cases).The differences between the two groups were also of statistical significance (P<0.05).Conclusions Low dose 5-Fu combined with triamcinolone is superior to intralesional triamcinolone therapy alone in the treatment of keloids.

AIM: To develop an RP-HPLC method for preparing the reference substanc of vicenin-2 in Desmodium styracifolium. METHODS: Ethanol-extract of desmodium styracifolium was isolated and purified by RP-HPLC combining solvent extraction with column chromatography and recrystalliztion.The purity and content of vicenin-2 were identified by HPLC. RESULTS: The flvonoids were completely separated under this chromatographic condition.The purity of the reference substance was 99.0% or above. CONCLUSION: The method is simple,accurate,better on repeatability,and effective to yield high-purity product.It can be used as reference substance for the research of herbal medicine.