[Objective]To compare the results of 3 methods to treat complete dislocation of acromioclavicular joint.[Method]Three different surgical techniques were employed: K-wire tension band(in group A of 26 cases),clavicular hook plate(in group B of 34 cases) and percutaneous screw and K-wire(in group C of 32 cases).There were 78 males and 14 females,and all the cases were acute complete dislocation of acromioclavicular joint.[Result]Eighty-six cases were followed up with an average period of 19 months(13～31 months).Acording to Karlsson's standards,the rate of excellent and good in the three groups was 73.1%,94.1%,93.8% respectively.The mean oprate time was 35.6min,38.6min,28.1 min respectively.The average blood loss was 43.6ml,48.3ml,7.5ml respectively.The average incision length was 8.8cm,8.9cm,0.7cra cm respectively.The complications were 20,9,8 respectively.[Conclusion]Percutaneous coracoclavicular screw and acromioclavicular K-wire fixation has advantages of less opration time and blood loss,cosmetic scar,and a low complication rate,good clinical results.It is believed to be a better method for the treatment of acromioclavicular joint dislocation.

Objective To investigate the relationship between activation of Janus kinase/signal transducer and activator of transcription (JAK/STAT) pathway and multiple organ dysfunction in rats with sepsis. Methods Using a sepsis model produced by cecal ligation and puncture (CLP), 98 male Wistar rats were randomly divided into normal control group (n=10), CLP group (n=40), AG490 (JAK2 inhibitor) treatment group (n=24) and rapamycin (RPM, STAT3 inhibitor) treatment group (n=24). At serial time points, the animals in each group were sacrificed, then tissue samples from the liver, lungs, kidneys and small intestine were harvested to detect STAT1/3 activity, pulmonary myeloperoxidase (MPO) and small intestinal diamine oxidase (DAO) activities. Meanwhile, organ function parameters including serum aspartate transaminase (AST) and blood urea nitrogen (BUN) contents were also measured. Results At 2 hours after CLP, STAT1 activities were found to be enhanced rapidly in the liver, lungs and small intestine, peaking at 6-24 hours, but their increase was delayed in the kidneys. Compared with STAT1, STAT3 activities were weaker and detected only in the liver and lungs, with no detectable STAT3 in the small intestine and kidneys. Pretreatment with either AG490 or RPM significantly lowered STAT1 activities in the liver, lungs and small intestine as well as STAT3 activities in the liver and lungs (P0.05). Conclusions These data suggest that abdominal infection can result in intensive activation of STAT1 and STAT3 in vital organs, and they play important roles in the pathogenesis of sepsis. Inhibition of JAK/STAT pathway can attenuate multiple organ dysfunction secondary to CLP-induced sepsis in rats.

AIM To investigate the effects of PLC on ultrastructure of platelets. METHODS The effects of PLC on ADP induced platelet aggre-gation were detected by tubidmetry; the ultrastru-cture changes of platelet were analyzed by electron microscope. RESULTS The rate of PLC inhibited significantly platelet aggregation by ADP induced is 86 03%?12 06% and 82 47%?5 49%. Pseudopodia can inhibit by 0 5 U PLC, at this group increase in the number of the granules associated with enhanced intensities of their electron densities and smaller dilated canalicular system. compared with normal saline group. In the 2 5 U PLC group the platelet morphology and ultrastructure approach blank group. The platelet is very smooth. PLC can inhibit producing pseudopodia-like process and the releasing of granules. Dilated canalicular system is similar to blank group, But it was different to normal group. CONCLUSION It's showed that PLC can significantly inhibit platelet aggregation and ultrastructural changes.

To investigate the effects of medicated serum prepared with Chinese herbal medicine Zhizhen Recipe (ZZR) on activity of nuclear factor-κB (NF-κB) and expression and function of P-glycoprotein (P-gp) in human colorectal cancer multidrug-resistant cell line HCT-8/VCR.

Objective To assess ①the effect of signal transducer and activator of transcription (STAT) on pulmonary injury induced by cecal ligation puncture (CLP) in septic rats; ②the biological effect of interleukin (IL)-6 and IL-10 expression in pulmonary injury mediated by STAT in septic rats. Methods Sepsis of rats was induced by CLP. Male Wistar rats were randomly divided into normal control (n=8), CLP group (n=24), and inhibitor (rapamycin, RPM) of STAT pretreatment group (n=24). At serial time points in each group, animals were sacrificed. Then, pulmonary tissue and serum samples were harvested to determine IL-6 and IL-10 mRNA expression by reverse transcription polymerase chain reaction (RT-PCR) and protein expression levels by enzyme-linked immunosorbent assay (ELISA). Meanwhile, pulmonary STAT-1 DNA-binding activity was detected by electrophoretic mobility shift assay (EMSA) . Activity of myeloperoxidase (MPO) as well as histopathology were also evaluated. Results Compared to normal control, pulmonary STAT-1 activity at 6 h, 24 h and 48 h following CLP significantly elevated (P

AIM To investigate the antiplatelet effects of phospholipase C (PLC) by studying the effects of PLC on platelet adhesion and aggregation. METHODS Auxiliary agent(-), aspirin (+) and six doses of PLC were administered to anaesthetized rabbit via duodenum. Blood was taken from artery carotis before administration and at 1,2,4 hours after administration. Platelet aggregation rates were determined by turbidmetry. Platelet adhesion rates were tested by glass ball method. RESULTS 100 IUPLC?L -1 and 200 IUPLC?L -1 had no evident effect on rabbit's platelet adhesion rate, 400～ 1 000 IUPLC?L -1 decreased the platelet adhesion rate significantly ( P

AIM To investigate the antiplatelet effect of PLC by de termining the concentration of TXB 2, 6-keto-PGF 1? and bleeding time( BT). METHODS TXB 2 and 6-keto-PGF 1? were detected by ra dioimmunity kit. Bleeding time were measured by routine methods. RESULTS Six doses of PLC can prolong BT significantly(P0 05). The inhibition on TXB 2 generation, of PLC 60 0～ 1 000 U?kg -1 with ADP revulsant, PLC 800～1000 U?kg -1 with AA revulsant and PLC 1 000 U?kg -1 with Collagen revulsant, is more significant than ASA (P

Objective To explore the effects of 75 mGy irradiation on the apoptosis of spermatogenic cells and antioxidant capacity of serum and testis and hormone levels in male rats with diabetes mellitus(DM).Methods Rats were injected intraperitoneally with streptozotocin(STZ)to develop diabetes.The diabetic rats were irradiated with 75 mGy X-rays every other day for 4 weeks.Their survival rate and body weight were recorded 12 weeks after development of diabetes.The apeptosis percentage of germ cells was measured with flow cytometry and TUNEL method.The changes of anti-oxidation and gonadal hormone levels in serum and testis were measured with kits.Results After the rats suffered from diabetes for 12 weeks,the survival rate in DM group was 25%(6/24),100% in normal control group(16116).The survival rate in 75 mGy + DM group(9/16,56.25%)was obviously higher than that in the DM group(X2= 4.00,P < 0.05).Meanwhile,the percentage of apaptotic spermatogenic cells in the diabetic rats was significantly larger than those in the normal control and irradiation groups(F = 5.496,P < 0.05).MDA and NO levels in serum and testis of diabetic rats were higher in varying degrees than that in the normal control,while the serum and testis MDA content in the 75 mGy + DM group were lower than those in the DM group especially in the testis(F = 10.644,P < 0.01).75 mGy X-ray irradiation decreased NO content in the diabetic rats serum significantly(F = 14.379,P < 0.05)and increased NOS activity and TS,FSH level(F = 9.676,43.194 and 5.282,respectively,P < 0.05 and P < 0.01).Conclusions LDR could decrease the MDA level and NO content,and increase the antioxidant enzyme activity and TS and FSH levels in testis and serum of diabetic rats.

Objective To study the clonal heterogeneity in differentiation potential of immortalized mesenchymal stem cells in vitro and in rive.Methods The monoclonal cell lines were performed with limiting dilution cloning,and were induced to adipocytic,asteogenic and neuronal differentiation in vitro.After transplanted the monoclonal cell lines into SCID mice,the xenotransplants were removed and evaluated by immunohistochemistry.Results From the parental HMSC-TERT,32 single-cell derived clones were established,of which the differentiation properties varied considerably in vitro.The cells grow in different plating densities during expansion in culture:HMSC-TERT-2 expressed more strongly in LCA,GFAP and vimemin;HMSC-TERT-C19 expressed more strongly in keratinose than HMSC-TERT-2,HMSC-IERT-20,and MSC-H;HMSC-TERT-C2 expressed more strongly in actin than HMSC-TERT-2.Conclusions The HMSC-TERT monoclone cells are heterogeneity in differentiation petential in vitro and in vivo,suggesting that standard in vitro culture and in vivo inoculate procedure phy an important role in the clinical application of stem cells.

Objective To evaluate the effect of early enteral nutrition (EN) on the pancreatic exocrine secretion in dogs with acute necrotizing panereatitis (ANP). Methods ANP model was induced by injection of mixtured solution of 5% sodium tanrecholate and trypsin into the pancreatic duct. Thirty dogs were randomly divided into total parenteral nutrition (TPN) group (n=5), duodenal PEPTI-2000VARIENT (DP) group (n=5), duodenal Nutrison MuhiFibre (DN) group (n=5), jejunal PEPTI-2000VARIENT (JP) group (n=5), jejunal Nutrison MuhiFibre (JN) group (n=5). The dogs were treated by either TPN or EN 24 hours after ANP model induction and the nutrition support lasted for 5 days. Serum amylase, LDH, lipase, secretin (SEC), cholecystokinin (CCK) and gastrin were measured at 1, 2, 3, 4, 5 d. Pancreatic juice was collected for 3 hours after TPN or EN started, and the amount of pancreatic juice and levels of proteinase, amylase, lipase, HCO3-, K+, Cl-, Na+ were determined. Dogs in each group were sacrificed at day 7. Histological and ultra-structure changes of the pancreatic tissues were evaluated pathologically. Results The levels of serum amylase, LDH, lipase, CCK, amount of pancreatic secretion and K+, Cl+, Na+ were not significantly different among these groups. The levels of plasma SEC and gastrin, HCO3-, proteinase, amylase, lipase in the duodenal nutrition groups were significantly higher than those in TPN group (P<0.05). The above mentioned parameters in the jejunal nutrition group were significantly lower than those in the duodenal group (P<0.05) and higher than those in the TPN group without significant difference. Among the 2 jejunal nutrition groups, the levels of plasma gastrin, HCO3- in pancreatic juice, proteinase, amylase, lipase in the JP group were significantly higher than those in the JN group (P<0.05). The above mentioned parameters in the DP group were significantly lower than those in the DN group (P<0.05). The amount of pancreatic secretion, HCO3-,K+, Cl+, Na+ were not significantly different among these groups. The pathological changes were similar among these groups, and the extent of pathological changes was relatively better in the JP group. The amount and density of intracytoplasm zymogen granules of pancreatic acinar cell were not significantly lower than those in the TPN group. Conclusions The delivery of nutrients to the proximal jejunum with elemental low-fat diets did not increase the pancreatic exacrine activity.