0.05).RGR showed that the toxicity level of magnesium alloys was 0.And there was no significant abnormality found in biochemical indicators and pathological analysis after inplant in vivo.[Conclusion]Magnesium alloys showed good biocompatibility to L929 mouse fibroblasts,and had no cacoethic effect to test animals,so the magnesium alloys is possible to be a new type and potential of bone surgery implant materials.

[Objective]To observe mouse osteoblasts vitality,histomorphology and growing development in vitro co-culture combined with magnesium alloys,confirm the biocompatibility of magnesium alloys and osteoblasts,and try to find out the possibility of magnesium alloys to be a new type of bone surgery implant material.[Method]Mouse osteoblasts were checked by Gomori and Von kossa stained,cultured and developed in vitro.Then the osteoblasts were mixed with magnesium alloys in a cell density of 3?104/ml.After 24、48、72 hours co-culture,the surface of magnesium alloys were observed by scanning electron microscopy(SEM) and confocal microscopy to find the change of osteoblasts.[Result]After culture in vitro,the osteoblasts well developed,and expressed stable character.After co-culture with magnesium alloys,the cells adhered and proliferated on the surface of alloys very well from SEM and confocal microscopy observation,which showed the osteoblasts had great activity and reproduce capability.[Conclusion]Magnesium alloys showed good biocompatibility and bone conduction capability with mouse osteoblasts,so the magnesium alloy is very possible to be a new type of bone surgery implant material.

[Objective]To study the mechanism of magnesium alloy degradation and bone formation at the bone-implant interface after implanting a magnesium alloy into rat femur.[Method]SD rats femur were filled with magnesium alloy stick.Nine weeks later,animals were killed and femur were retrieved.Systematic investigations on the surface morphology,composition,structure of bone-implant were performed by means of metallurgical microscope,scanning electron microscopy(SEM),and energy dispersive spectrum(EDS).Decalcified sections were prepared,and histologic examination was carried out.[Result]The bone response happened both on the surface of surrounding bone and the surface of magnesium alloy degradation layer while magnesium alloy degradating in rat femur.It was formed three layers at the interface of bone-implant: the metal layer,the degradation layer,and the new bone layer.Discontinuity connective tissue could be seen on the new bone layer but no inflammatory cells were found.[Conclusion]The new bone response at the interface of bone-implant is consistent with normal bone tissue.Magnesium alloys have good characters of degradation ability,osteogenesis ability,and histocompatibility.And the rate of degradation is corresponding to the rate of new bone formation.

Objective To study the diagnosis and indications of operation of thyroiditis associated with thyroid cancer(TTATC). Methods The clinical data of 16 patients with TTATC were analysed retrospectively. Results All 16 patients were treated surgically, including subacute thyroditis with thyroid cancer in 4 patients, Hashimoto's disease with thyroid cancer in 12. The carcinoma of thyroid were composed of 12 papillary, 3 follicular, and 1 mixed papillary follicular cancer. The 16 patients were followed up for 2 months 9 years, showing they were all alive and healthy. Conclusions In order to avoid delaying the treatment of thyroid cancer, the following thyroiditis with thyroid nodule should be operated earlier: (1) The nodule in thyroditis didn't alter to smaller and shows a tendency to be enlarge after systematic drug therapy. (2) the cold nodule is of cold character in SPECT but solid in ultrasound.

Background and purpose: The prognosis of completely resected stage ⅢA(N2) non-small cell lung cancer (NSCLC) remains a significant concern. The 5-year overall survival (OS) rates range from 10% to 30%. This study aimed to analyze the patterns of first failure in completely resected stage ⅢA(N2) NSCLC and to assess the actuarial risk of developing metastasis at different sites and to guild standard clinical practice. Methods: Patients withⅢA(N2) NSCLC who had undergone radical surgery in our hospital from Jan. 2005 to Jul. 2012 were retrospectively reviewed. The progression-free survival (PFS), the OS, patterns of first failure, the actuarial risk were analyzed. The cumulative incidence of first failure was determined using the Kaplan-Meier analysis. Results: Among 357 patients who met the eligibility criteria with completely resected stage ⅢA(N2) NSCLC, 5-year OS was 36.9%. There were 284 (77.6%) patients experiencing disease failure: 61 with local failure, 197 with local and distant failures, and 26 patients with local recurrence as the first failure. Brain, bone and lung were the main sites of distant failure as the first failure, while brain was the most common site. There were 67 patients developing brain metastases (BM) as the first site of failure. The median time of local failure as the first site of failure was 13.6 months, and the time to develop distant recurrence was 15.1 months. 92.5% BM developed in 3 years after the complete resection. Conclusion: As the first failure, the rate of distant failure was much higher than that of local failure in completely resected stage ⅢA(N2) NSCLC. Brain was the most common site of distant failure as the first failure. These results can be helpful in guiding standard clinical practice and evaluating the outcome of comprehensive treatment.

Actinomycosis ; diagnosis ; pathology ; surgery ; Adult ; Female ; Humans ; Ovarian Diseases ; diagnosis ; pathology ; surgery

Objective To investigate the effects of preoperative jaundice relieving on hemihepatectomy of hilar cholangiocarcinoma.Methods The clinical data of 18 patients who received preoperative percutaneous transhepatic cholangiography and drainage (PTCD) or endoscopic nasobiliary drainage (ENBD) before hemihepatectomy at the Tongji Hospital of Huazhong University of Science and Technology from January 2007 to January 2012 were retrospectively analyzed.The condition of the 18 patients (jaundice relieving group) was compared with that of 24 patients (non-jaundice relieving group) who did not receive PTCD or ENBD before hemihepatectomy.The differences in the pre-and postoperative blood loss,blood transfusion,operation time and postoperative incidence of complications between the 2 groups were analyzed.All data were analyzed using the t test or chi-square test.Results After PTCD or ENBD,the levels of total bilirubin (TBil),direct bilirubin (DBil),alanine aminotransferase (ALT) were (27 ± 5) μmol/L,(22 ± 6) μmol/L and (52 ± 42) U/L,which were significantly lower than (287 ± 120)μmol/L,(212 ± 86)μmol/L,and (267 ± 180)U/L before PTCD or ENBD in the jaundice relieving group (t =4.33,6.61,4.19,P ＜0.05).In the jaundice relieving group,left hemihepatectomy was performed on 14 patients,and right hemihepatectomy on 4 patients,and the radical resection rate was 16/18.In the nonjaundice relieving group,left hemihepatectomy was performed on 11 patients,and right hemihepatectomy on 13 patients,and the radical resection rate was 83.3％ (20/24).There was no significant difference in the radical resection rate between the 2 groups (x2 =1.09,P ＞ 0.05).The operation time,volume of intraoperative blood loss,volume of blood transfusion were (5.0 ± 0.8) hours,(562 ± 207) ml and (430 ± 317) ml in the jaundice relieving group,and (6.3 ± 1.5)hours,(815 ± 463)ml and (750 ± 146)ml in the non-jaundice relieving group,with significant differences between the 2 groups (t =4.77,7.80,4.65,P ＜ 0.05).The incidences of postoperative complications,bleeding and postoperative hepatic failure were 3/18,1/18 and 1/18 in the jaundice relieving group,and 75.0％ (18/24),33.3％ (8/24) and 33.3％ (8/24) in the non-jaundice relieving group,with significant differences between the 2 groups (x2=5.14,7.58,7.58,P ＜ 0.05).Conclusion Preoperative jaundice relieving could shorten the operation time and reduce the volume of intraoperative blood loss and the incidence of postoperative complications.

Objective:To investigate frequencies of microsatellite instability(MSI)and loss of heterozygosity(LOH)in renal ceil carcinoma(RCC),and to discuss the relationship of clinicopathological characteristics of RCC with MSI and LOH. Methods:Twelve microsatellite markers located at chromosomes 3p,9p and 14q were selected to investigate microsatellite alterations(MSI and LOH)in 31 RCC specimens and their paired metastasis specimens by polymerase chain reaction- polyacrylamide gel elect rophoresis-ethylene dibromide(PCR-PAGE-EB)staining and sequencing.Results:The frequency of MSI could reached 61.3% and that of LOH could reach 54.8%.The highest frequency of MSI was at locus of D9S168(32.3%);the highest frequency of LOH was at locus of D3S1289(21.4%).No correlation was found between MSI or LOH and the patients' age,sex,pathology type and metastastis,except that MSI was correlated with TNM stage of RCC(P

Animals ; Antibody-Producing Cells ; drug effects ; Female ; Immunity ; drug effects ; Male ; Mice ; Mice, Inbred BALB C ; Phenols ; toxicity ; T-Lymphocytes ; drug effects

0.05).The expres-sions of IRP2 mRNA in mild iron deficiency anemia group and modetate iron deficiency anemia group were significantly higher than those of control group(P0. 05). There was significant difference between recessive iron deficiency and mod-erate iron deficiency anemia group(P