The 125 strains of the symbiotic and epiphyte microorganisms were isolated from marine organisms (Sea cucumber, Sea urchin, Sea anemone, Sea actinia, Ulra, Sargassum, Undaria). Among them,21 strains of bacteria,8 strains of actinomycetes and 2 strains of fungi have shown to have antagonistic activity on bacterial or fungal growth. In the 21 strains of bacteria, 7 strains belong to Bacillus sp., 11 strains belong to Vibro sp., and 3 strains belong to Pseudomonas sp.. In the 8 strains of actinomycetes, 5 strains belong to Streptomyces sp., 3 strains belong to Micromonospora sp.. 2 strains of fungi belong to Penicillum sp..

OBJECTIVETo investigate the role of exogenous carbon monoxide (CO) in protection of rat hearts from ischemia/reperfusion injury and its underlying mechanisms.

METHODSCardiac contractility, lactate dehydrogenase(LDH), creatine kinase(CK) and infarct area were analyzed by the Langendorff isolated rat hearts. All isolated hearts were subjected to 30 min of ischemia followed by 120 min of reperfusion.

RESULTSPerfusion with 25 micromol/L of CORM-2 (an exogenous CO releaser) during the first 10 min of reperfusion prevented the increase in LVEDP and decrease in LVDP, +dp/dt(max) in isolated ischemia/reperfusion hearts. CORM-2(25 micromol/L) had no effect on the changes of coronary flow, but it really inhibited the release of LDH and CK, and also reduced the infarct size. Perfusion with 10 micromol/L of CORM-2 decreased the LDH, CK and infarct size, but it did not improve the contractility of ischemia/reperfusion hearts. However, perfusion with 100 micromol/L of CORM-2 exacerbated the injury induced by ischemia/reperfusion. Pretreatment of a NOS inhibitor L-NAME and a HO-1 inhibitor ZnPP partly abolished the protection effect of CORM-2(25 micromol/L) on LVEDP, and L-NAME and a GC inhibitor methylene blue could also cancel the enhance of LVDP and +dp/dt(max) incuced by CORM-2. All of the inhibitor (methylene blue, L-NAME, a mitoK(ATP )channel blocker 5-HD and ZnPP) could partly enlarge infarct area compared with CORM-2 treatment.

CONCLUSIONSExogenous CO could protect heart from ischemia/reperfusion injury. The cardiac protection of CO might be through NOS-cGMP and HO-1 pathway, and the activation of mitoK(ATP)channel might be also involved in.

Animals ; Carbon Monoxide ; metabolism ; pharmacology ; Cardiotonic Agents ; pharmacology ; Enzyme Inhibitors ; pharmacology ; In Vitro Techniques ; Male ; Myocardial Contraction ; drug effects ; Myocardial Ischemia ; physiopathology ; Myocardial Reperfusion Injury ; physiopathology ; prevention & control ; NG-Nitroarginine Methyl Ester ; pharmacology ; Nitric Oxide Synthase ; antagonists & inhibitors ; metabolism ; Nitric Oxide Synthase Type I ; Organometallic Compounds ; metabolism ; pharmacology ; Rats ; Rats, Sprague-Dawley

Adult ; Colonic Neoplasms ; genetics ; DNA, Neoplasm ; genetics ; Female ; Fluorescence ; Humans ; Male ; Microsatellite Instability ; Middle Aged ; Polymerase Chain Reaction ; methods ; Rectal Neoplasms ; genetics

Objective To evaluate the effect of a novel orthopedic biomaterial,graded composite zireonia(ZrO2)hydroxyapatite(HAP)on activity of rat osteoblast ceils(OB)cultured in vitro. Methods The pure zirconia material was used as control to measure surface roughness of the composite material that was examined by using scanning electron microscope(SEM)and X-ray diffraetometer (XRD).The rat osteoblast cells were cultured on the two materials.Alkali phosphatase(ALP)of the two groups was measured and ELISA was used to detect IL-6 and TGF-?eoncentration of the supematant of OB cells.Tumor growth factor-?(TGF-?)mRNA was detected by RT-PCR.SEM was used to observe OB cells on the two materials.The extract of the composite material was used for a eytotoxicity test to cal- culate the relative proliferation rate(RGR)and classify the toxicity.Results The surface roughness of the gradual composite materials was significantly higher than that of the control materials(P＜0.01). The ALP of the gradual material group was markedly higher than that of the control group at different in- tervals.There was significant difference of the IL-6 and TGF-?concentrations 2-4 days after culture be- tween two groups(P＜0.05,P＜0.01).The mRNA level of TGF-?of the two OB groups also showed marked statistical difference(P＜0.01).The ossification of the OB cells on the composed material was marked after 14 days.The MTT color experiments showed no statistic significance between materials group and negative group,with the toxicity at levelⅠand 0(P＜0.05).Conclusion Graded composite ZrO2 HAP can significantly promote proliferation and differentiation of OB cells cultured in vitro and has good biocompatibility.

Antineoplastic Combined Chemotherapy Protocols ; therapeutic use ; Bone Neoplasms ; drug therapy ; surgery ; therapy ; Combined Modality Therapy ; Humans ; Osteosarcoma ; drug therapy ; surgery ; therapy

The prescriptions including Polygoni Multiflori Caulis that built by Pro. Yan were collected to build a database based on traditional Chinese medicine (TCM) inheritance assist system. The method of association rules with apriori algorithm was used to achieve frequency of single medicine, frequency of drug combinations, association rules between drugs and core drug combinations. The datamining results indicated that in the prescriptions that including Polygoni Multiflori Caulis, the highest frequency used drugs were parched Ziziphi Spinosae Semen, Ostreae Concha, Ossis Mastodi Fossilia, Salviae Miltiorrhizae Radix Et Rhizoma, Paeoniae Rubra Radix, and so on. The most frequent drug combinations were "Polygoni Multiflori Caulis-parched Ziziphi Spinosae Semen", "Ostreae Concha-Polygoni Multiflori Caulis", and "Polygoni Multiflori Caulis-Ossis Mastodi Fossilia". The drug association rules of confidence coefficient 1 were "Ostreae Concha-->Polygoni Multiflori Caulis", "Poria-->Polygoni Multiflori Caulis", "parched Ziziphi Spinosae Semen-->Polygoni Multiflori Caulis", and "Paeoniae Alba Radix-->Polygoni Multiflori Caulis". The core drug combinations in the treatment of insomnia were Ossis Mastodi Fossilia, Polygoni Multiflori Caulis, Salviae Miltiorrhizae Radix et Rhizoma, Ostreae Concha, Polygalae Radix, Margaritifera Concha, Poria, and parched Ziziphi Spinosae Semen. And the core drug combinations in the treatment of obstruction of Qi in chest were Salviae Miltiorrhizae Radix Et Rhizoma, Polygoni Multiflori Caulis, parched Ziziphi Spinosae Semen, Trichosanthis Fructus, Allii Macrostemonis Bulbus, and Paeoniae Rubra Radix.
Data Mining ; methods ; Drug Combinations ; Drugs, Chinese Herbal ; chemistry ; pharmacology ; Humans ; Medicine, Chinese Traditional ; methods ; Plant Stems ; chemistry ; Polygonaceae ; chemistry ; Prescriptions

OBJECTIVETo investigate whether TRAIL can synergize with adriamycin (ADM) to kill osteosarcoma cells (U2OS) in vitro, and its possible molecular mechanism.

METHODSMTT was used to evaluate the cytotoxic effect of TRAIL and ADM either used alone or in combination at 24 hours after treatment to U20S cells. Cell apoptosis and its proportion were detected by flow cytometry assay. Acridine orange fluorescence microscopy and transmission electron microscopy were used to examine cellular and ultrastructural changes of apoptosis. The changes of cFLIP in mRNA and protein level were semi-quantified by RT-PCR and Western blot analysis.

RESULTS(1) U2OS cells were not sensitive to TRAIL (IC(50) > 1 mg/L); the cells were relatively more responsive to ADM in an apparent dose-effect fashion. (2) The combination of TRAIL and ADM presented a synergistic effect on U2OS cells. Subtoxic concentration of TRAIL (0.1 mg/L) combined with subtoxic concentration of ADM (1.0 micromol/l) killed (49.54 +/- 2.79)% of U2OS cells. (3) The cytotoxicity was mainly attributed to cell apoptosis as demonstrated by flow cytometry assay, fluorescence microscopy and electron microscopy.

CONCLUSIONSubtoxic dose of TRAIL can effectively kill osteosarcoma cells (U2OS) in combination with subtoxic dose of ADM, but not effective when used alone. Apoptosis is the main mechanism of this killing effect induced by combination of TRAIL and ADM. Down regulation of cFLIP at mRNA and protein level is involved in this apoptosis pathway.

Apoptosis ; drug effects ; Apoptosis Regulatory Proteins ; pharmacology ; Bone Neoplasms ; pathology ; CASP8 and FADD-Like Apoptosis Regulating Protein ; Caspase Inhibitors ; Doxorubicin ; pharmacology ; Drug Synergism ; Humans ; Intracellular Signaling Peptides and Proteins ; metabolism ; Membrane Glycoproteins ; pharmacology ; Osteosarcoma ; pathology ; RNA, Messenger ; metabolism ; TNF-Related Apoptosis-Inducing Ligand ; Tumor Cells, Cultured ; Tumor Necrosis Factor-alpha ; pharmacology

OBJECTIVETo discuss the resection pseudoarthrosis for pelvic malignant tumors around acetabular.

METHODSFrom May 1997 to June 2005, 25 patients with malignant tumors around acetabular were treated surgically with resection pseudoarthrosis. The series comprised 15 males and 10 females with an average age of 42 years old (range from 16 to 75 years old). There were 4 osteosarcomas, 12 chondrosarcomas, 1 Ewing's sarcoma, 1 neuroectodermal tumor, 1 myeloma, 1 malignant fibrohistiocytoma, 2 synovial sarcomas, and 3 metastases. Pseudoarthrosis was performed after resection of pelvic malignant tumors around acetabular. The affected side was protected postoperatively by skin traction with 2 - 3 kg weight for 6 to 8 weeks. After then, the patients walked gradually with a cane.

RESULTSAmong 25 patients, 6 had complications (24%). At a follow-up ranging from 3 to 10 years, 11 patients died of lung metastases, 2 relapsed, 12 remained alive free of disease. There was an average crispation of 5 cm (range from 2.5 to 7.5 cm). The patients were functionally evaluated according to Enneking's MSTS criteria in 1993. The average MSTS functional score was 17 points (12 to 19 points). After 3 months postoperative, the patients could sit normally, walk with a cane, and even walk limpingly without cane.

CONCLUSIONSResection pseudoarthrosis for pelvic malignant tumors around acetabular results in good clinical results at the time of mid-term and long-term follow-up. And pseudoarthrosis is advisable especially for patients with malignant highly tumors around acetabular, poor soft tissue reconstruction condition, high risk for infection, poor economy.

Acetabulum ; Adolescent ; Adult ; Aged ; Female ; Femur Head ; surgery ; Follow-Up Studies ; Humans ; Male ; Middle Aged ; Pelvic Neoplasms ; surgery ; Young Adult

Post-traumatic osteolysis (PTOL) is a very rare disease occurring after acute trauma or repetitive micro-trauma, which is characterized by persistent pain in the injured site. In this study, we reported 7 patients, in whom osteolysis developed in the distal clavicle, pubis and ischium.
Accidental Falls ; Accidents, Traffic ; Adolescent ; Adult ; Athletic Injuries ; diagnosis ; Biopsy ; Clavicle ; injuries ; Diagnosis, Differential ; Female ; Humans ; Ischium ; injuries ; Male ; Middle Aged ; Osteolysis ; diagnosis ; Pubic Bone ; injuries

OBJECTIVETo evaluate the risk factors and prognosis of surgery for spinal metastasis.

METHODSA retrospective analysis was performed in 63 patients with spinal metastasis who underwent surgical treatment between June 1992 and June 2002. Forty-one patients underwent anterior en-bloc or partial resection, decompression and reconstruction with internal fixation of the spine. Laminectomy and decompression with internal fixation were done in 8 patients. One-stage anterior-posterior en-bloc resection and decompression followed by reconstructive stabilization were done in 14 patients.

RESULTSHaving been followed up more than 6 months, postoperative radiological evaluation revealed that spinal stabilization was evident in all patients. Fifty-seven (91.9%) patients benefited with quality of life significantly improved through pain alleviation, 41 (66.1%) patients improved in their neurological status. No serious complications were observed in surgery. The mean survival time after surgery was 6 months in patients with lung and liver carcinoma, 15 months in breast, prostatic, and stomach carcinoma as well as the other miscellaneous malignancies and 28 months in thyroid, kidney carcinoma among which groups the difference were significant (P < 0.01).

CONCLUSIONSurgical treatment for spinal metastasis is able to relieve neurological symptoms and improve the quality of life. The survival time is related to the site of primary tumor; shorter survival in lung and liver carcinoma, longer in breast, prostatic, stomach carcinoma and longest in thyroid and kidney carcinoma.

Adult ; Aged ; Decompression, Surgical ; methods ; Female ; Follow-Up Studies ; Fracture Fixation, Internal ; Humans ; Laminectomy ; methods ; Male ; Middle Aged ; Prognosis ; Quality of Life ; Reconstructive Surgical Procedures ; Retrospective Studies ; Risk Factors ; Spinal Cord ; surgery ; Spinal Neoplasms ; secondary ; surgery