Objective To investigate the infection of Helicobacter pylori infection on the serum concentration of homocysteine (Hcy) and its relationship with coronary heart disease (CHD) .Methods 159 cases of patients with CHD were selected as the re‐search subjects .They were divided into two groups :infection group and non‐infection group ,according to the results of 14 C‐urea breathe test .And they were also divided into three groups :negative group ,mild infection group and severe infestation group ,accord‐ing to the severity of infection .The CHD patients infected Helicobacter pylori were divided into three groups:low risk group ,mod‐erate risk group and high risk group ,according to SYNTAX scores .The serum Hcy concentration was determined by cyclic enzy‐matic method .Results Comparing with non‐infection group ,the serum Hcy concentration significantly increased in infection group (P<0 .01) .With the aggravation of Helicobacter pylori infection ,the serum Hcy concentration increased .There were significant difference among negative group ,mild infection group and severe infestation group (P<0 .01) .In the CHD patients infected Heli‐cobacter pylori ,the serum Hcy concentration also increased with the aggravation of the severity of coronary lesion .And there were significant difference among low risk group ,moderate risk group and high risk group (P<0 .01) .Conclusion Helicobacter pylori plays a role in the incidence and development of CHD through increasing the serum Hcy concentration .

Objective To explore the relationship of c-fos protein and cell apoptosis by observing the expression of c-fos protein in hippocampus of newborn rat with hypoxic-ischemic brain damage(HIBD).Methods Forty-eight 7-day SD neonatal rats were randomly divided into control group(n=6) and experiment group(n=42).The models of HIBD were established in neonatal rats by inhaling the mixed gases of 920 mL/L N2 and 80 mL/L O2,and the animals were sacrificed by dislocation their heads at different time points(0.5,1,3,6,12,24,48,72 h),then the hippocampus were dissected by morphological analysis.Results The apoptotic cells appeared at the time point of 3 h,and reached the peak at 48 h,then decreased.The positive cell of c-fos protein increased from the time point of 30 min and reached the peak at 2 h and then decreased gradually,and there was a contrary tendency between the expression of c-fos protein and the number of damaged brain cells by HIBD(r=-0.57 P

Objective To investigate the change of oxidation system and antioxidation system in mesangial proliferative glomerulonephritis(MsPGN) induced by anti-Thy1.1 antibody,and further to study the intervention of rosmarinic acid(RAD).Methods Anti-THy1.1 serum was produced,and then intravenously injected into rats for establishing an experimental model of MsPGN.The experiment was designed for control with or without RAD,glomerulonephritis with or without RAD,respectively.The activity of superoxide dismutase(SOD) and the content of malondialdehyde(MDA) in tissue homogenate were detected by spectrophotomerty.Results The activity of SOD significantly decreased,while the content of MDA increased in MsPGN.RAD could inhibit oxidation in the mesangial cells.Conclusion Lipid peroxidation participates in MsPGN and RAD can control the changes of the mesangial cells and show the activity of antioxidation.

Objective To explore the influence of Helicobacter pylori (Hp) infection in serum lipoprotein associated phospholipase A2 (Lp-PLA2), carotid intima-media thickness and stability of atherosclerotic plaques in atherosclerosis patients.Methods A total of 393 cases of patients with carotid artery arteriosclerosis confirmed by carotid color uhrasonography, who are informed consent, was selected as objects.The14C urea breath test was used to determine the infection situation of selected objects of helicobacter pylori.Meanwhile, enzyme-linked immunosorbent assay (ELISA) was used to determine the level of serum lipoprotein associated phospholipase A2 (Lp-PLA2).Results Serum Lp-PLA2 levels and carotid intimamedia thickness (IMT) of patients with carotid artery atherosclerosis in Hp infection group were higher than that of Hp non-infection group, and with the degree of Hp infection aggravating in the patients of carotid artery atherosclerosis, their serum Lp-PLA2 levels and carotid IMT were also increased accordingly.F test showed that the differences of serum Lp-PLA2 levels and carotid IMT in different degree of carotid artery atherosclerosis group were statistically significant (P ＜0.01).The incidence of unstable plaque of Hp infection group was obviously higher than that of the Hp non-infection group in the carotid atherosclerosis with plaques with statistical significance (chi square value =4.744, P =0.029).Multivariate linear regression analysis showed that the possibility of complication of unstable plaques in Hp infection group of carotid artery atherosclerosis was 1.82 times than that of non-infection group.With serum Lp-PLA2 every increasing 1 μg/L, the possibility of instability plaque increased by 2％.Conclusions Hp infection may promote the occurrence and development of carotid artery atherosclerosis by increasing serum level of Lp-PLA2 and changing the stability of atherosclerotic plaques.

OBJECTIVE: To observe the in vivo effect of combined iontophoresis and laurocapram pretreatment on transdermal delivery of diclofenac sodium gel. METHODS: Diclofenac sodium gel was prepared using polyvinyl alcohol, carboxymethylcellulose sodium and hydroxypropylmethyl cellulose. The diclofenac blood level in rabbits was measured in four groups: passive diffusion, laurocapram pretreatment, iontophoresis (current density controlled at 0.3 mA/cm(2)) and combined laurocapram pretreatment and iontophoresis. Rabbit stratum corneum of each of the four groups was examined using a scanning electron microscope. RESULTS: Diclofenac blood concentration in the passive diffusion group was undetectable. The diclofenac blood concentration area under the curve compared with time was 8.4 &mgr;l ml(-1) h(-1) in the laurocapram pretreatment group, 2.7 &mgr;l ml(-1) h(-1) in the iontophoresis group and 15.4 &mgr;l ml(-1) h(-1) in the combination group. There was no detectable damage observed by scanning electron microscopyto the stratum corneum after iontophoresis or laurocapram pretreatment. CONCLUSION: The combination of iontophoresis and laurocapram pretreatment appears to enhance transdermal delivery of diclofenac sodium gel wi thout significant skin damage.

OBJECTIVETo investigate the possible association between L-selectin gene P213S polymorphism and coronary heart disease (CHD) in Chinese population.

METHODSIn total 212 CHD patients diagnosed by angiography and 230 healthy controls were studied. The genotype and allele frequencies of L-selectin gene polymorphism were assayed by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP).

RESULTSThe frequency of the L-selectin gene 213P allele in CHD patients was significantly higher than that in the control group (77.59% vs 69.35%, P=0.006). Compared with the SS genotype, PP homozygote had a significantly increased CHD risk (OR=2.70 and OR=2.15 using unadjusted and adjusted Logistic regression models, respectively). No association was found between the severity of CHD and the Lselectin gene P213S polymorphism

CONCLUSIONOur findings suggest that L-selectin gene 213P mutant allele might contribute to susceptibility of Chinese individuals to contract CHD.

Adult ; Aged ; Aged, 80 and over ; Coronary Disease ; genetics ; Female ; Gene Frequency ; Genetic Predisposition to Disease ; genetics ; Genotype ; Humans ; L-Selectin ; genetics ; Male ; Middle Aged ; Polymerase Chain Reaction ; Polymorphism, Genetic ; genetics

Stirred culture offers a number of advantages over static systems as it maintains a stable, homogeneous culture environment and is easy to scale-up. This paper focused on the development and application of stirred tank bioreactor to culture hematopoietic cells. Preliminary study of stirred culture of hematopoietic cells was carried out in cord blood mononuclear cells culture in spinner flask. The results showed that the amplification rates of total cell, CFU-GM and BFU-E, with the exception of CFU-Mk, were greater in spinner flask than T-flask. The number of total cells increased 20 fold after 14 days incubation in spinner flask. The amplification rates of CFU-GM, CFU-Mk and BFU-E reached maximum at 10th day, 10th day and 7th day respectively, and the maximal amplification rates were 9.2-fold, 5.5-fold and 2.4-fold respectively, whereas the rate of CD34+ cells in spinner flask was (6.7 +/- 4.0)-fold at day 10. These results indicated that the stirred culture system is better than the static culture systems for hematopoietic cell proliferation. The biocompatibility of cord blood MNC to different types of materials used in bioreactors was also tested. The results showed that glass, stainless steel 316L and polytetraflouroethylene (PTFE) supported the growth of hematopoietic cells well. A higher cell density was reached in stirred bioreactors with controlled pH and DO than static culture. These findings suggested that the controlled large-scale culture could be used to overcome the clinical shortage of hematopoietic cells.
Antigens, CD34 ; metabolism ; Bioreactors ; Cell Culture Techniques ; instrumentation ; methods ; Erythroid Precursor Cells ; cytology ; Fetal Blood ; cytology ; Granulocyte-Macrophage Progenitor Cells ; cytology ; Humans ; Polytetrafluoroethylene ; Stainless Steel

Metabonomics was employed to investigate the effect of Angelica sinensis volatile oil (ASVO) to the endogenous metabolites of normal rats, and to reveal the possible ways of metabolism in rats caused by ASVO. The fifty male Waster rats were randomly divided into five groups (each consists of 10 rats), such as control group, high dose group of ASVO, middle dose group of ASVO, low dose group of ASVO, and Aspirin group. They were given 0.9% saline, 0.352 mL x kg(-1) ASVO, 0.176 mL x kg(-1) ASVO, 0.088 mL x kg(-1) ASVO and ASP respectively with the equal volume of 0.2 mL. Drugs and vehicle were given for 3 successive days. The urine was collected at 12, 24, 36, 48 h after modeling with metabolic cages. Rat urine metabolic fingerprint in different stages was analyzed using GC-MS, based on which the principal component analysis (PCA)and orthogonal partial least-squares discriminant analysis (OPLS-DA) models were established for metabonomic analysis. Potential biomarkers were screened by using variable importance in the projection (VIP) and T test. It was revealed that the middle dose of ASVO at 36 h induces a substantial change in rat urine. Compared with control group, seven kinds of endogenous metabolites in ASP group and ASVO group change significantly (P < 0.05), among which aconitic acid, succinic acid, citric acid, alpha-ketone glutaric acid, glycine and malic acid content had an upward trend (P < 0.05) and prostaglandin content had a downward trend (P < 0.01). The mechanism of ASVO and ASP have the similarity. It is likely that ASVO intervenes the metabolic process by affecting the energy, amino acid and lipid metabolism. Our work also indicates that rats administrated with ASVO can increase the energy metabolism of the body, induce the production of inflammatory substances and strengthen the body's immune ability. The result has also provide a proof for futher interpret ASVO pharmacological effects.
Angelica sinensis ; chemistry ; metabolism ; Animals ; Dose-Response Relationship, Drug ; Drugs, Chinese Herbal ; analysis ; metabolism ; pharmacology ; Energy Metabolism ; drug effects ; Lipid Metabolism ; drug effects ; Male ; Metabolomics ; Oils, Volatile ; analysis ; metabolism ; pharmacology ; Plant Oils ; analysis ; metabolism ; pharmacology ; Rats ; Rats, Wistar ; Urine ; chemistry

Both pylorus-preserving gastrectomy (PPG) and segmental gastrectomy (SG) achieve the preservation of gastric cardia and pylorus through the circumferential resection of stomach, while concepts and surgical procedures of these two operations are obviously different. In this sense, transectional gastrectomy includes both PPG and SG. PPG is one of the standard surgical procedure for early gastric cancer (EGC). The extent of lymph node dissection (No.1, 3, 4sb, 4d, 6, 7, 8a, 9) and the retention of infrapyloric vessels, hepatic and pyloric branch of vagal nerve has formed a consensus. Meanwhile, SG is regarded as an investigational treatment according to the Japanese gastric cancer treatment guidelines. It is still controversial and may generate an ethical risk in the clinical practice. This article distinguishes the difference in the concepts and surgical procedures between PPG and SG, assisting a comprehensive evaluation in further research.
Cardia ; Gastrectomy ; Humans ; Lymph Node Excision ; Pylorus ; Stomach Neoplasms/surgery*

Objective： The aim of this study was to investigate the best choice of the three treatment modalities of preserving laryngeal functions in T3 laryngeal carcinoma. Methods： There were 94 cases with T3 laryngeal carcinoma (Stage Ⅲ and Ⅳ ) who were treated by three kinds of modalities of preserving laryngeal functions： definitive radiotherapy, salvage surgery for the failures of definitive radiotherapy, partial laryngectomy. We compared their survival curve, recurrence rate of the primary and secondary site, and the complications. Results： The survival curve of the partial laryngectomy groups was better than that of the definitive radiotherapy group in supraglottic carcinoma (P=0.0248). In glottial carcinoma, the survival curve of partial laryngectomy group and salvage surgery group were insignificantly different, both of them were better than that of definitive radiotherapy group (P=0.0075). The complication rate of the salvage surgery group was significantly higher than that of partial laryngectomy group (60％ Vs 16.7％ ); We regarded the definitive radiotherapy group and salvage surgery group as one group, it's primary site recurrence rate was significant higher than that of partial laryngectomy group (45.8％ Vs 19.4％ ). Conclusion： Partial laryngectomy is the most effective way among the three modalities of preserving laryngeal functions to treat T3 laryngeal carcinoma.