Objective To observe the effect of injectable tissue-engineered bone in treating periarticular bone fracture nonunion under arthroscopy. Methods Selected 6 patients with intra-articular bone fracture nonunion:3 cases of humerus intercondylar fracture;2 cases of femoral condylar fracture and 1 cases of tibial plateau fracture. All of the 6 patients have undergone arthroscopic debridment and tissue-engi-neered bone injection in the the fracture ends with puncture needle under direct vision. Percutaneous needle internal fixation were performed if necessary. All the patients have got regular follow-up after the operation process. Check their healing condition with X-ray examination, and the healing of the bone and its complications have also been monitored. Reexamination were made 3, 6, 9, and 12 months after surgery. Results All the patients have experienced successful operation and all the fracture have healed up. The X-ray review showed that the callus healing time was (8. 34 ± 2. 4) weeks and fracture healing time was (18. 2 ± 3. 3) weeks. Accordong to Johner-Wruhs functional category, there were 5 cases of excellent recovery and 1 case of medium recovery. Among these patients, inflammatory reaction occurred in 1 case, and the symptoms disappeared after 2 weeks of Vancomycin anti-inflammatory treatment; deep venous thrombosis occurred in 1 case, and the symptoms disappeared after systematic anticoagulant therapy. Conclusion It’ s safe and effective to treat periarticular bone fracture nonunion with injectable tissue-engineered bone under arthroscopy.

BACKGROUND:Diabetic acromelic gangrene(diabetic foot)has become one of the important causes for the disability and death in diabetes mellitus.OBJECTIVE:To establish model of diabetic foot in rat,and observe the interventional effect of Chinese compound on diabetic foot.DESIGN:A comparative observational experiment.SETTING:The First Affiliated Hospital of Clinical Medical College,Henan University of Science and Technology.MATERIALS:Fifty male Wistar rats of 8 weeks old,(200.0±16.3)g,were raised with common feed in separate cage at the room temperature of 18-22℃.and they were free to access of feed and water.Ten rats were randomly selected as the blank control group,and the other 40 were used for model establishment.METHODS:The experiments were carried out in the Animal Room of Henan University of Science and Technology from October 2001 to April 2002.①Grouping:The 40 rats were fasted for 6 hours,and then treated with intraperitoneal injection of streptozotocin(55.0 mg/kg),while the 10 rats in the blank control group were injected with isovolume sodium citrate buffer solution.20 models were successfully established,and they were randomly divided into model group(n=10)and treatment group(n=10).Rats in the treatment group were treated for 3 weeks with intragastric perfusion of Chinese compound(60 g/kg)at 9:00 every day after model establishment,and those in the model group were given intragastric perfusion of isovolume saline.At the end of the third week,the rats were all killed under anesthesia after fasted for 12 hours,blood samples were collected to determine the levels of fasting blood glucose,blood lipids and insulin.The daily amount of drinking water was recorded in each group during the experiment.②Scoring standards for acromelic gangrenes:The limbs rats with diabetic foot were scored by three grades,including dark skin,mild open focus on skin,and focus had invaded deep muscular tissue.The total score of each rat was calculated.The beta-cell function index (HBCI)was also evaluated.MAIN OUTCOME MEASURES:The changes of the amount of drinking water,body mass and levels of triglyceride,cholesterol,fasting blood glucose,blood lipids and insulin were observed before and after treatment.RESULTS:Totally 50 Wistar rats were used.20 of them were excluded due to unsuccessful model establishment,and the other 30 rats were involved in the final analysis of results.①The amount of drinking water was obviously higher in the model group and treatment group than in the blank control group during the experiment(P＜0.01).As the treatmentlasted,the amount of drinking water was obviously decreased in the treatment group,but gradually increased in the model group.②After treatment,the body mass was obviously lower than that before treatment in the model group(P＜0.01).but had a descending trend without obvious difference as compared with that before treatment in the treatment group(P＞0.05).③Obvious acromelic gangrenes were obvious in both groups(P＜0.01).The body mass in the treatment group was obviously higher than that in the model group(P＜0.01),and the conditions of acromelic gangrene were obviously better than those in the model group(P＜0.01).④Before treatment,the levels of fasting blood glucose in the treatment group and model group were obviously higher than that in the blank control group(P＜0.01),while the levels of insulin and HBCl were obviously lower than those in the blank control group(P＜0.01).After treatment,the levels of fasting blood glucose in the treatment group and model group were obviously higher than that in the blank control group(P＜0.01),and it was obviously lower in the treatment group than in the model group(P＜0.01),it was close to the normal value in the treatment group.⑤The levels of triglyceride and cholesterol before treatment were obviously higher in the treatment group and model group than in the blank control group(P＜0.01).After treatment,the levels of triglyceride and cholesterol in the treatment group were obviously decreased(P＜0.01), which were not obviously different from those in the blank control group (P＞0.05), while those in the model group were increased continuously,and obviously higher than those in the blank control group(P＜0.01).CONCLUSION:Increasing the serum level of insulin and decreasing the levels of blood glucose and blood lipids can prevent and treat the occurrence and development of diabetic foot to some extent.This model of diabetic foot is sensitive to drug,and can be used to investigate the pathogenesis of diabetic foot and evaluate the effect of drug therapy.

Tissue microarray is a special biologic microarray, which was invented on the base of cDNA microarray. The principle of the tissue microarray is arraying the tissue on the solid carrier according demand, then hybridizing, marking and dyeing, for researching the special expression of aimed gene or production among the different tissue. The application of tissue microarray is abroad, especially the determinant of tumor predisposing factor, the screening of the special gene and antibody, the earlier diagnosis, the therapy, and the judgment of prognosis. Compared with the traditional pathological investigation, tissue microarray has the behavior of small volume, high throughput (information), and design by different demand. Tissue microarray has important practical significance and broad market prospect in the investigation of the relation between the gene and disease (tumor), the verification of the associated gene of the disease, the development and screening of new drug, the molecular diagnosis of disease, the dynamic observation during therapy, and the judgment of prognosis.

Objective To examine the effect of tetraethylammonium (TEA, K~+ channel blocker) on pancreatic ?-cell apoptosis and explore the mechanism. Methods Mouse ? cells (NIT cells) were exposed to streptozotocin(STZ) to induce apoptosis, and TEA of different concentrations were applied along with STZ to prevent efflux of intracellular K~+. Cells were stained with annexin V, PI and rhodamine 123. Flow cytometer (FCM) was used to determine the percent of apoptotic or viable cells and the change of mitochondrial membrane potential. Culture media was collected to quantify the content of NO and ROS produced by NIT-cells. Cells were collected for detecting the activity of super oxide dismutase (SOD) in cells lysates. Results STZ induced apoptosis of NIT cells significantly (P

OBJECTIVE To investigate the genotypes of aminoglycoside-modifying enzymes(AMEs)genes of Acinetobacter baumannii.METHODS Clinical isolates of A.baumannii were collected from 2003 to 2006,and their resistance to gentamicin,amikacin and tobramycin were tested by K-B method.Twenty-three isolates were chosen because of their resistance to aminoglycoside antibiotics(at least resistant to one kind of the drugs).Nine types of the AMEs were detected by PCR.RESULTS Drug resistant rates of 23 isolates of A.baumannii to gentamicin,amikacin and tobramycin,were 86.96%,56.5% and 69.56%,respectively.The detection rates of the 9 AMEs,including ant(3')-Ⅰ,aac(3)-Ⅰ、aac(6')-Ⅰ,aph(3')-Ⅵ,aac(3)-Ⅱ,aac(6')-Ⅱ and ant(2″)-Ⅰ were 69.56%,60.87%,56.52%,47.82%,30.4%,26.09% and 21.73%,respectively.CONCLUSIONS The resistance to aminoglycoside antibiotics of A.baumannii is mainly caused by AMEs.

A variety of cytomorphological features, architectural patterns and stromal changes may be observed in malignant melanomas. Hence, melanomas may mimiccarcinomas, sarcomas, benign stromal tumours, lymphomas, plasmacytomas and germ cell tumours. Melanomas may be composed of large pleomorphic cells, small cells, spindle cells and may contain clear, signet-ring, pseudolipoblastic, rhabdoid, plasmacytoid or balloon cells. Various inclusions and phagocytosed material may be present in their cytoplasm. Nuclei may show bi- or multi-nucleation, lobation, inclusions, grooving and angulation. Architectural variations include fasciculation, whorling, nestion, trabeculation, pseudoglandular, pseudopapillary, pseudofollicular, pseudorosetting and angiocentric patterns. Mucoid or desmoplastic changes and very rarely pseudoangiosarcomatous change, granulomatous inflammation or osteoclastic giant cell response may be seen in the stroma. The stromal blood vessels may exhibit a haemangiopericytomatous pattern, proliferation of glomeruloid blood vessels and perivascular hyalinization. Occasionally, differentiation to nonmelanocytic structures (Schwannian, fibro/myofibroblastic, osteocartilaginous, smooth muscle, rhabdomyoblastic, ganglionic and ganglioneuroblastic) may be observed. Typically melanomas are S-100 protein, NKIC3, HMB45, Melan A and tyrosinase positive but some melanomas may exhibit an aberrant immunophenotype and may express cytokeratins, desmin, smooth muscle actin, CD68, CEA, EMA and VS38. Very rarely, neurofilament protein and GFAP positivity may be seen.

Objective To establish an HPLC fingerprint of Herba Rhodobryi Rosei.Methods The fingerprint chromatography has been determined by RP-HPLC.The analysis was carried out with Dikma ODS C18 column(250 mm?4.6 mm,5 ?m).The mobile phase were:0.5% HAcCN(A),0.5% HAcH2O(B);Elution method:0-50 min,A was 20%-55%;50-60 min,A was 55%-95%;60-85 min,A was 95%-100%;keeping 5 min.Flow-rate was 1.0 mL/min.Wavelength was 360 nm and temperature was 30 ℃.It was analysized with the Estimating System of Similarity of 2004A Version(the Country's Pharmacopeia Committee)on the Chinese Medicine Fingerprint Chromatography.Results The fingerprint chromatography of Herba Rhodobryi Rosei was estabilished.Conclusion The method can be used in quality control of Herba Rhodobryi Rosei with accuracy and better repeatability.

Objective: To analyse the nutritional components and flavorous substance of the white yak,s milk. Method: In collecting the raw milk of eighteen white yaks,dry substance,protein,fat and ash were detected by routine methods;mineral elements by ICPV-1000S inductively coupled plasma atomic emission spectroscopy,amino acids by 835-Shimadzu amino acid analyzer,volatile substances by GC-MS. Results: The milk of white yak contained dried substance (18.38%),protein (6.53%),fat (5.64%),minerals (0.87%), TAA(6.36%), EAA(2.56%),two limiting amino acids (Met and Trp), EAA / TAA (40.25%), EAA/ NEAA (67.37%); seven flavorous substances: esters, alcohols,ketones and aldehydes,etc. Conclusion: The milk of white yak has distinct propertis: high protein,high fat,high energy,abundant minerals,agreeable flavor,abundant amino acid. So the milk of white yak is an excellent nutritional resource.

BACKGROUND: At present, treatment of diabetes mellitus with western medicine starts from the angle of stimulating injured β cell of islet to strength insulin secreting. Treatment with traditional Chinese medicine is very important in protecting injured β cells.OBJECTIVE: To observe the protective effect of lycium barbarum polysaccharide and nourishing yin and activating blood compound recipe on pancreatic islet function in rats with streptozotocin-induced diabetes mellitus.DESIGN: A randomized and controlled animal experiments.SETTING: First Affiliated Hospital and Medical College of Henan University of Science and Technology.MATERIALS: Totally 70 male Wistar rats, aged 6 weeks, with body mass of 200 g, were used in this experiment.METHODS: This experiment was carried out at the Animal Room of Henan University of Science and Technology from October 2001 to April 2002. Totally 70 rats were divided into two groups: normal control group (n=10) and modeling group (n=60). Totally 30 successful model rats were randomly subdivided into 3 groups: streptozotocin model group, compound recipe treated group and lycium barbarum polysaccharide-treated group,with 10 rats in each group ;Intragastric administration of 60 g/kg Chinese herb compound recipe for nourishing yin and activating blood was performed on the rats in the compound recipe treated group at 9:00 every day (huangqi, shanyao, gegen respectively 30 g, gouqizi, danshen, huafen,digupi respectively 15 g, danggui, zhimu respectively 12 g, danpi, wuweizi respectively 10 g, shuizhi 5 g, shanyurou 20 g, etc, provided by drug store of First Hospital Affiliated to Henan University of Science and Technology,were decocted and condensed to be equivalent crude drug 3.0 kg/L with routine method). Intragastric administration of 0.5 g/kg lycium barbarum polysaccharide was given in the lyciun barbarum polysaccharide treated group (lycium barbarum polysaccharide was isolated and purified from ningxia barbary wolfberry fruit). Intragastric administration of comparative volume of normal saline was performed in the streptozotocin model group and normal control group, totally 3 weeks. The levels of fasting blood glucose (FBG) and insulin were measured at 3 weeks before and after experiment, and function index of β cell of islet was calculated; Pancreas was taken out to detect SOD activity, NOS activity and concentrations of NO and MDA were also detected.RESULTS: Ten rats in normal control group and 30 successful model rats in model group entered the stage of result analysis. ① In the initial stage of experiment, FBG level in each modeling group was significantly increased (t=16.51 to 10.07,P ＜ 0.01), while fasting insulin level and function index of β cell were significantly decreased (t=13.64 to 100.99 ,P ＜ 0.01 ) in comparison with normal control group. ② At 3 weeks after experiment, levels of FBG, NO , MDA , NOS activity were significantly decreased in the compound recipe treated group and lycium barbarum polysaccharide group compared with streptozotocin model group (t=8.08 to 72.68 ,P ＜ 0.01 ), while level of fasting insulin and function index of β cell, SOD activity were significantly increased in the compound recipe treated group and lycium barbarum polysaccharide group compared with streptozotocin model group (t=4.39 to 17.87,P ＜ 0.05-0.01 ). ③ Levels of FBG and MDA , NOS activity and concentration of NO were significantly decreased in the compound recipe treated group, and fasting insulin and function index of βcells were significantly increased in comparison with lycium barbarum polysaccharide group(P ＜ 0.01 ).CONCLUSION: Lycium barbarum polysaccharide and nourishing yin and activating blood compound recipe increase the level of fasting insulin and function index of βcell of rats with streptozotocin induced diabetes mellitus, decrease the level of blood glucose, improve the function of βcell of islet, which might be related to the increase of pancreatic islet SOD activity and decrease NOS activity.

Objective To detect the expression and distribution of activated cytotoxic cells in types of lymphoma with tissue microarray, and provide evidences for clinical treatment and prognosis. Methods Immunohistochemical staining by S-P technique was used to detect the expression and distribution of perforin and granzyme B in the lymphoma tissue microarray, composed of 60 cases of lymphoma tissue. Ten cases of NK/T-cell lymphoma routine sections were used for relative research, and ten cases of reactive hyperplasia were used for comparison. Results In the tissue microarray, originated from intranode and extranode were 48 cases and 12 cases, respectively; consisting of 42 cases of B-cell lymphoma, 16 cases of T-cell lymphoma, two cases of Hodgkin's disease. 42 cases of B-cell lymphoma cells were negative in perforin and granzyme B. In Ten cases of peripheral T-cell lymphoma, perforin and granzyme B positive were eight cases and nine cases, respectively, but the positive cells were no tumor cells. In 12 cases of NK/T-cell lymphoma (two in the tissue microarray, ten routine sections), both perforin and granzyme B were strongly positive. B-cell lymphoma, T-cell lymphoma and NK/T-cell lymphoma differed significantly (P<0.01). Conclusion Perforin and granzyme B were immunity markers for the identification of activated cytotoxic cells, which also could be used as diagnostic markers of NK/T-cell lymphoma. Their expression in B-cell lymphoma reflected the anti-tumor immunologic reaction of host. Tissue microarray technology has the behavior of high-throughput, convenient, effective, small experiment error, good replication and so on, and can be used as a useful tool for research of lymphoma.