BACKGROUND: Chinese medicine is rich in recognition and treatment for rheumatoid arthritis(RA) and has achieved attractable progression in researches of recent several years,characterized by variable therapeutic methods, definite therapeutic effects and few toxic side effects. Therefore, it is important scientifically and socially to further search for the effective drugs and methods for the treatment of RA in the field of Chinese medicine. There are few reports on whether Chinese herbs inhibit or block the destruction of cartilage and bone and promote their metabolism and repair for damage or not by variable approaches,targets and links in RA occurrence.OBJECTIVE: To probe into the mechanism of Chinese herbal tongbiling on cartilage destruction.DESIGN: Complete random design and control experimental study based on the experimental animals.SETTING: Golden Chamber teaching and research room of guangzhou university of traditional Chinese medicine.MATERIALS: The experiment was performed in Comprehensive Experimental Room of First Affiliated Hospital of Guangzhou University of Traditional Chinese Medicine from August 2002 to December 2003,in which,35female Wistar rats were employed,clean grade,weighted(110±20) g,provided by Animal Experimental Room of First Military Medical University of Chinese PLA, with qualified animal No. 2002A041.After 3 days adaptive breeding,Wistar rats were randomized into normal group,model group and total alkaloidal of tongbiling group(TBL group). TBL was extracted in Phytochemistry Room of Tropical Disease Institute of Guangzhou University of Traditional Chinese Medicine.METHODS: The animal model was prepared on rats with collagen-induced arthritis. After treated with gastric infusion in groups,the pathological sections were done on phalangeal joint of rat and chondropathy was observed after routine HE staining. The chondrocytes were cultured. The chondrocytes were stimulated with rrIL-1β in vitro and resulted in matrix decomposition of chondrycyte to prepare pharmaceutical model,TBL of various concentrations added and dexamethasone(DXM) was applied in the control. After 48 hours culture,the upper clear solution if cell was collected and glycosaminoglycan (GAG) content was measured with alcian blue method,and nitric oxygen (NO) content was assayed with method of aqua fortis reduction.MAIN OUTCOME MEASURES:①Primary results: Effect of TBL on phalangeal chondropathy in rats with collagen-induced arthritis and on matrix decomposition of chondrocyte induced by rrIL-1β.②Secondary results: Effect of TBL on induction of NO synthesis from chondrocytes by rrIL-1β.RESULTS:①It was indicated in evaluation on HE pathological section of phalangeal joint: The severity of cartilage destruction in TBL group was less than that in model group(P<0.05).②TBL of various concentrations and DXM inhibited remarkably the decomposition of choncrocyte proteoglycan (P<0.01) and NO synthesis (P<0.01).CONCLUSION: TBL inhibits phalangeal cartilage destruction of rats with collagen-induced arthritis. It is indicated in the results of experiment in vitro that TBL is against the decomposition of choncrocyte proteoglycan,which is probably achieved by inhibiting NO synthesis.

Objective To assess whether 5-HTR1A C( - 1019) G and GNβ3 C825T gene polymorphisms are associated with post-stroke depression (PSD) and explore the genetic mechanism of the pathogenesis of post-stroke depression. Methods All 159 patients with first stroke were divided into the PSD group and the control group according to HAMD scores. Their genotypes were determined with polymerase chain reaction and allele-specific restriction enzyme analysis. Results The frequency of 5-HTR1A (-1019) GG genotype(8/53,15. 1% ), G allele (44/106,41.5%)and GNβ3 825T allele(68/106,64. 2% ) were significantly higher in the post-stroke depression group than in the controls (5/106,4.7% ;35/212, 16. 5%; 113/212, 53.3%; ×2 = 23.204, 23. 655, 3. 392, all P ＜ 0. 05 ). Combined genotype analysis showed that individuals with both 5-HTR1A ( - 1019) G and GNβ3 825T allele ( OR =4. 980,95% CI 2. 429-10. 210,P =0. 000) had a higher risk than those with 5-HTR1 A (-1019) G allele ( OR = 3. 589,95% CI 2. 113-6. 096, P = 0. 000) or GNβ3 825T allele ( OR = 0. 638,95% CI 0.395-1. 031 ,P =0. 042) only for post-stroke depression. Conclusion The 5-HTR1A C( - 1019)G and GNβ3 C825T polymorphisms are predisposing genes of post-stroke depression. Our data also suggest a significant interaction between the 5-HTR1A ( - 1019)G allele and GNβ3 825T allele in post-stroke depression.

Objective To study the therapeutic effect of pulse-activating injection on acute poisoning by pa-raquat(PQ). Methods 50 Sprague-Dawley (SD) rats were randomly divided into five experimental groups: blank group, negative control group, positive control group, low-dose pulse-activating injection group (LDG), and high-dose pulse-activating injection group(HDG) (n = 10 for each group). Blank group were injected with normal suline,30 ml/kg,and other groups were established as acute paraquat poisoning models. Macroscopic and histopathological ex-aminations were performed and biological indexes were measured for the lung specimens. The indexes included lung wet weight/dry weight,the rats of neutrophils and protein content in the pulmonary alveolar lavage fluid. In the mean time, the level of malondialdehyde (MDA), superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) both in plasma and bronchoalveolar lavage flui(BALF) were detected. Results Compared with that in negative control group,lung congestion and lung edema of LDG group were mitigated; and the MDA level decreased from (5.04± 0.50) nmol/ml,(1. 19±0.18) nmol/ml to (4.04±0.21) nmol/ml,(0.79±0.04) nmol/ml both in plasma and BALF;the SOD activities were increased from (123.30±20. 39) U/ml, (26.43±2.22) U/ml to (277.09± 11.66) U/ml,(37.10± 2.49) U/ml as well; the GSH-Px activities were increased from (1796.63 ±81. 12) U/ml, (598.24 ± 62.50) U/ml to (2151.54 ± 148.32) U/ml, ( 1788.44 ± 175.11 ) U/ml as well ( P < 0. 01 ). Conclusions Administration of pulse-activating injection could improve the lipid peroxidation damage caused by a-cute poisoning of PQ.

Objective To investigate the relationship between expression of CDK1,TFF2 and HPV16/18 infection in uterine cervical carcinomas.Methods Formalin-fixed,paraffin-embedded samples including 50 cases of squamous cell carcinomas,20 cases of cervical intraepithelial neoplasia CINⅡ-Ⅲand 20 cases of CINI and 20 cases of normal cervical tissues were studied.Using Polymer DetectionSystem For Immuno-Histological Staining(PV-9000)as immunohisto-chemical detecting method.the expression of TFF2 and CDK1 in these samples were examined.The infections of HPV type 16,18 DNA were determined by PCR.Results There were significant differences for CDK1 between carcinomas,CIN and normal cervices,respectively(all P＜0.05).Expression of CDKl were correlated with tumor grades(P＜0.05).The positive expression of TFF2 in carcinomas was significantly lower than that in normal cervical tissue and CIN.There was significant differences amongthem(P＜0.05).Expression of TFF2 were correlatedwith age(P＜0.05).Thepositive rate of HPV16/18 was significant difference between cervical carcinomas,CIN and normal tissues(P＜0.05),and it was not associated with age,tumor grades,clinical stages and lymph node metastasis(all P＞0.05).The expression of CDK1 was not associated with TFF2 and HPV16/18(all P＞0.05).The expression of HPV16/18 was associated with TFF2(rs=-0.500,P＜0.05).Conclusions The results suggest that in tissues of CIN and cervical carcinomas in TFF2 and CDK1 expression changes and HPVl6/18 infection interact with each other,which can effect the progression of CIN and carcinogenesis of cervical carcinomas.

Objective:After construction and identification of HBsAg gene recombinant backbone adenoviral vector,it is to prouduct HBsAg gene recombinant adenoviruses by packing PAd-Easy-1-HBs in 293 cells.Methods:The gene of interest was amplified from plasmid pEcob-6 PCR, the gene of interest which contained HBsAg gene was cloned into on adenoviral shuttle vector pAd-track-cmv. The pAd-track-cmv-HBs was linearized by digesting with restriction endonuclease Pme-1, and subsequently cotransformed into E.coli BJ-5183 cells with an adenoviral backbone vector pAd-Easy-1, Homologous recombinants were performed in bacterial cells. Finally, the linearized backbone adenoviral vector was transfected into adenoviruses packing cells lines,e.g. 293 cell by lipofectamine transfection. Transfections and viral productions can be minotored by green fluorescent protein(GFP). The expression of HBsAg in supermatant was investigated by ELISA. It was a certain HBsAg vaccine to amplify recombinant adenoviruses by repeating the infevtion cell to collect the viral supermatant.Results:GFP expression was visible by fluorescence microscopy after transfection. Adenoviral titer was monitored by GFP expression. GFP expression was visible after repeating the infection cell using the viral supernatant in more than 90 percent of the cells.The HBsAg also expressed in supermatant.Conclusion:HBsAg gene recombinant adenoviral backbone vector has been constructed successfully. HBsAg gene recombinant adenoviruses have been producted by packing in 293 cells. The study provides the possibility of further researches on the development of new anti-HBV vaccines.

[Objective]To evaluate the effects of transplantation of autogeneic mesenchymal stem cells(MSCs) with electro-stimulant therapy after spinal cord injury(SCI).[Method]Sixty rats were randomly assigned into four groups:MSCs transplation group,electro-stimulant therapy group,MSCs transplation combined with electro-stimulant group and control group.[Result]Statistical differences showed in inter-group in BBB score after 4 weeks(P

Objective To study the effect of Sca1+ cells on the HSCs`(hemopoietic stem cells) differentiation to dendritic cells(DCs),and identify the morphology,function and surface markers of the cells.Methods CD117+ HSCs were isolated and purified from the bone marrow of healthy Balb/c mice by magnetic affinity cell sorting.After cell expansion by treatment with the support of Sca1+ cells,the HSCs were induced for directional differentiation into DC-like cells.Studied the surface markers by FACS and function via LSCM and animal experiments. Results After 10 days of culture,we demonstrated that Sca1+ cells induced HSCs to differentiate into a distinct regulatory DC subset with high expression of CD11b but low expression of Ia.They had phagocytotic activity,and suppressed the GVHD(graft versus host disease) reaction.Conclusion HSCs can differente into dendritic cells with the support of Sca1+ cells.

Objective Compare the value of multislice CT perfusion imaging (MSCTPI)?color brain atlas (CBA)?visual evoked potential mapping (VEP-M) in the diagnosis of acute cerebral infarction.Methods After routine CT was performed,the 27 cases of acute cerebral infarction underwent MSCTPI?CBA?and VEP-M respectively.Results The examination of MSCTPI showed that abnormal perfusion changes were in accordance with clinical symptoms;the examination of CBA showed that in 32 scale local high power shadow presented on the power of ??? of lesion;the examination of VEP-M showed the prolongation of latency of P100?degrade of amplitude on the lesion of the chart,the power of the lesion degraded obviously on the map of distribution of power,and distribution asymmetry.Conclusion Combined use of MSCTPI?CBA?VEP-M in the diagnosis of acute cerebral infarction can remedy the defects and improve diagnostic rate of acute cerebral infarction further.

Systemic inflammatory response has a major role in the development and progression of cancer,and increased systemic inflammatory response usually correlates with poorer survival.Recently the evaluation index of systemic inflammatory response including neutrophil-lymphocyte ratio,C-reactive protein,glasgow prognostic score,platelet-lymphocyte ratio.Several previous studies show that these indexes are the independent prognostic factors for esophageal cancer.Research on the systemic inflammatory markers may also be valuable for the clinical treatment and prognosis of esophageal cancer.

Objective To analyze the changes of serum amyloid A (SAA) ,C reactive protein (CRP) ,procalcitonin(PCT) and trypsin activated peptide(TAP) in the patients with acute pancreatitis (AP) ,and to evaluate the above 4 indexes combined detection in the diagnosis and treatment of AP .Methods The levels of SAA ,CRP ,PCT and TAP were detected in 21 cases of severe AP (SAP) and 49 cases of mild AP(MAP) .The detection results were compared with those in the healthy control group (n=50) .Re‐sults The levels of SAA ,CRP ,PCT and TAP had statistical differences between the patients with acute stage of SAP and MAP groups with the healthy control group(P<0 .01);the levels of SAA ,CRP ,PCT and TAP in the SPA group were significantly high‐er than those in the MAP group with statistical difference(P<0 .01) .The diagnostic efficiency of 4‐index combined detection was higher than that of single index detection .Conclusion The combined detection of SAA ,CRP ,PCT and TAP is conducive to early diagnosis and disease condition judgement of AP ,and has an important significance to the diagnosis and treatment of SAP .