Objective To determine the estrogenic activity of dibutyl phthalate DBP. Methods The tested compound was dibutyl phthalate. Human estrogen-dependent MCF-7 breast cancer cells were cultured in RPMI 1640 medium containing 10% fetal bovine serum FBS. Five days before the addition of the tested compounds the cells were rinsed by phosphate balanced solution PBS and the medium was substituted with a phenol red-free RPMI 1640 medium containing 5% dextral charcoal-stripped FBS. The respective tested compound was added in fresh medium and the control cells received only the vehicle ethanol. The proliferation of MCF-7 cells was analyzed by the MTT assay growth curves mitotic index and coloning efficiency. Results Compared with the control the proliferation of tested cells treated with DBP like estradiol was markedly enhanced and the activity of the cell proliferation reached the maximum at 10-5 mol/L DBP. During log phase the mitotic index of the test cells treated with DBP and estradiol was significantly increased. The cell coloning efficiency was enhanced which was treated by 10-5 mol/L DBP only for 48 hours. The results showed the time-dependent and dose-dependent model. Conclusion Dibutyl phthalate may enhance the proliferation of human breast cancer MCF-7 cells in vitro that demonstrates an estrogenic activity of dibutyl phthalate.

To establish single- and double-transfected transgenic cells stably expressing hMATE1, hMATE1 cDNA was cloned by RT-PCR from human cryopreserved kidney tissue, and subcloned into pcDNA3.1(+) plasmid by virtue of both HindIII and Kpn I restriction enzyme sites. Subsequently, the recombined pcDNA3.1(+)- hMATE1 plasmid was transfected into MDCK, MDCK-hOCT1 or MDCK-hOCT2 cells using Lipofectamine 2000 Reagent. After a 14-day-cultivation with hygromycin B at the concentration of 400 µg · mL(-1), all clones were screened with DAPI and MPP+ as substrates to identify the best candidate. The mRNA content of hMATE1, the cellular accumulation of metformin with or without cimetidine as inhibitor, or transportation of cimetidine was further valuated. The results showed that all of the three cell models over expressed hMATE1 mRNA. The cellular accumulation of metformin in MDCK-hMATE1 was 17.6 folds of the control cell, which was significantly inhibited by 100 µmol · L(-1) cimetidine. The transcellular transport parameter net efflux ratios of cimetidine across MDCK-hOCT1/hMATE1 and MDCK-hOCT2/hMATE1 monolayer were 17.5 and 3.65, respectively. In conclusion, cell models with good hMATE1 function have been established successfully, which can be applied to study the drug transport or drug-drug interaction involving hMATE1 alone or together with hOCT1/2 in vitro.
Animals ; Biological Transport ; Cimetidine ; pharmacology ; DNA, Complementary ; Dogs ; Drug Interactions ; Humans ; Madin Darby Canine Kidney Cells ; Metformin ; pharmacology ; Organic Cation Transport Proteins ; genetics ; metabolism ; Transfection

Objective To explore the possibility of treating tibial osteomyelitis with transfer of a compound flap composed of the sural nerve fasciocutaneous flap and the lateral gastroenemius muscle.Methods We observed in cadaver specimens the anatomical structure of the sural nerve fasciocutaneous flap and the lateral gastrocnemius muscle to design a compound flap. Fifteen cases of tibia] osteomyelitis were treated with sinus excision and thorough debridement before the skin defect area was covered with a sural nerve compound flap whose muscle was stuffed into the tibia] channel. Plates were replaced with unilateral fixators in 3 cases of tibial nonunion. Results We observed 5 to 6 perforating branches of blood vessels between the sural nerve fascioeutaneous flap and the lateral gastroenemius muscle, indicating that the two can be harvested simultaneously in one compound flap. The transferred compound flaps survived in 15 cases. Tibial os-teomyelitis was completely cured in 14 cases, 1 case healed after second debridement, and 3 cases of tibial nonunion healed 6 months later after a second stage iliac bone graft. No recurrence was found after a mean follow-up of 18 (10 to 26) months. Conclusion A compound flap composed of the sural nerve fascio-cutaneous flap and the lateral gastrocnemius muscle can be used to treat tibia] osteomyelitis effectively.

Objective To introduce the treatment of intraarticular calcaneal fractures with poor soft tissue using poking reduction combined with Ilizarov methods. Methods From September 2007 to September 2009,11 patients with the intraarticular calcaneal fractures were treated with poking reduction combined with Ilizarov methods,including 10 males and 1 female at average age of 33.6 years(range,21-50 years).Four patients had the left calcaneal fractures and seven with the right ones.According to Sander classification,there were seven patients with type II fractures,three with type III fractures and one with type IV fracture.The various extents of heel soft tissue injury were emerged in all the patients.Before operation,B(o)hler angle was 0°-12°(average 8°)and Gissane angle 70°-95°(average 80°).According to AO classification of close soft tissue injury,there were three patients with type IC2,six with type IC3,one with type IC5 and one with open soft tissue injury.The collapse of the articular surface was recovered by Steinmann pin which passed through the lateral calcaneal tubercle.The medial and lateral fracture fragments were corrected by using the tensed olive wires.The heighat and width were maintained by using the Ilizarov external fixation. Results The mean duration of follow-up was 13.3 months (range,6-20 months).All fractures were healed after mean duration for 8.1 weeks(range,7-10weeks).The postoperative B(o)hler angle was 20°-45°(average 33°)and Gissane angle 100°-118°(average 107°).According to Maryland Foot Score system,the result of postoperative function was excellent in seven patients,good in three and fair in one,with excellence rate of 91%. Conclusions For the intraarticular calcaneal fractures,the poking reduction combined with Ilizarov method is able to recover and maintain the normal calcaneal height and width and reduce postoperative wound infections and many other complications.specially for Sanders II or III with severe soft tissue injury in the open or closed calcaneal fractures.Master of surgical indications and operating poims can attain satisfactory clinical efficacy.

Objective To discuss the operative methods, timing and outcomes of severe open Pilon fractures. Methods From April 2003 to July 2008, 21 patients with open Pilon fractures were admitted. All the patients were type C fracture according to AO/OTA classification, including 17 cases of type C2 and 4 cases of type C3. According to Gustilo classification, there were 18 cases of type Ⅱ, 2 cases of type ⅢA, 1 case of type ⅢB. The patients were treated in two different ways: one-stage minimally invasive osteosynthesis for reconstruction of the articular surface with transarticular external fixation of the ankle (19 cases),which included 16 cases of Gustilo Ⅱ AO/OTA C2, 2 cases of type Gustilo Ⅱ AO/OTA C3 and 1 case of type Gustilo ⅢA AO/OTA C2. Formal open reconstruction of the articular surface by plating and external fixation was performed when the condition of soft tissue had improved (2 cases), which included 1 cases of type Gustilo ⅢA AO/OTA C3 and 1 cases of type Gustilo Ⅲ B AO/OTA C3. Results All the patients were followed up from 6 to 48 months, with the mean of 24 months. The outcome of reduction was evaluated by the Burwell-Charnley score. Anatomical reduction was found in 6 cases, function reduction was in 14 cases and poor reduction was 1 case. The heal-time ranged from 2.5 to 11 months, with the mean of 4.7 months. The delayed union occurred in 2 cases. The rate of delayed union was 9.5%. Two patients experienced skin superficial necrosis. There were superficial infection in 2 cases and deep infection in 1 case. The infection rate was 14.3%. Eight cases experienced early traumatic arthritis. The incidence of this complication was 38.1%.According to American Orthopedic Foot Ankle Society (AOFAS) scale for ankle joint, the result of the treatment was 66-94, with an average of 85.2. Conclusion It is important to have the optimal timing of surgery and reliable fixation according to fracture classification, the condition of soft tissue and time after injury. It is the key to evaluate the condition of soft tissue and protect the blood supply.

A research combined trickling filter system and active sludge aeration system was applied in the treatment of industrial wastewater from gas-generating with heavy oil. The wastewater contained both high contents of NH+4-N and mixed hydrocarbons including various PAHs. Its BOD5/COD ratio was less than 0.3 and belongs to recalcitrant, toxic wastewater. The results showed a touch-growth biofilms system was formed on the porous packing material and it played a key role in the decrease of toxicity of the influent. It could also improve the biodegradability of the wastewater.

Aim To study relative bioavailablity of cefaclor effervescent tablets in healthy volunteers. Methods According to the crossover design, A volunteers were each orally given a single does of the 0.75 g cefaclor effervescent tablets and cefaclor capsules with an interval of 5 days between the two formulations.The plasma concentrations of the drug were determined by RP-HPLC.Pharmacokinetic parameters were obtained by ATPK programe,and calculated on the basis of open single compartment model.Results After a single oral dose, the peak levels in plasma averaged Cmax(31.27?5.81)?g?ml-1 and(30.56?5.25) ?g?ml-1 at (0.58?0.12)h and(0.73?0.17)h and AUC0～4(35.48?4.65) ?g?h?ml-1 and (35.89?2.90) ?g?h?ml-1 for tablet and capsule,respectively. Conclusion The result shows that two formulations are bioequivalence.

A laboratory scale combination process of anaerobic baffled reactor(ABR) with sequencing batch reactor(SBR) for treatment of real dyeing wastewater was studied.The effects of operational conditions were investigated.The results demonstrated that removal rates of COD,colour and aniline were 32%~95%,89%~99% and 50%~98%,respectively,the effluents of COD were 30.0 ~97.1mg/L,colour were 8 ~40 times dilution ratio,concentration of aniline were 0.20 ~0.95 mg/L,which could meet the National Discharge Criteria(GradeⅠ) under the operational conditions of HRTs of 24~36 h,organic loading rates of 0.43 ~2.46 kg COD/(m~(3)?d),the influent pH values of 6.5~8.0,ambient temperatures of 20℃~35℃ at the ABR stage and DOs of 2 mg/L,reaction times of 3~10h,settle times of 2 h at the SBR stage.

Objective To evaluate engraftment status of patients after allogeneic hematopoietic stem cell transplantation(Allo-HSCT) and prompt relapse of disease based on DNA polymorphism analysis technique.Methods Sixty-six cases were detected by DNA polymorphism analysis technique and 25 cases were monitored and analyzed dynamically during this period.Results After Allo-HSCT,48 patients obtained type of donors,but 13 patients did not; 5 patients showed mixed chimerism.Two cases of type of donors converted into mixed chimerism and 4 cases of mixed chimerism converted into type of donors after some time. The others' engraftment status did not change.Conclusion DNA polymorphism analysis technique can detect engraftment status of patients exactly, rapidly, which provides effective evidences of constitution for more clinical therapy projects.

OBJECTIVETo evaluate the biomechanics of treatment for lumbar spondlolisthesis using nail-grooved tail steel plate and WDFC (Wendeng Fusion Cage) implant.

METHODSThere were nine permanent waist-sacrum wet bone (L3-S3) in 1 to 2 clay-cold hours including 6 men and 3 women. They were seldom separated into 3 groups, which were fixed by nail-grooved fail plus WDFC. The model was separate into two kinds for single and across. With electrometry, deal experiment date with Graftool software. Each piece should be tested twice respectively.

RESULTSThe single and across segment non-destructive compression experiment. No-mid-compression from 0 to 750 N,the related coefficient and curves had no obvious change on inclined rate. In the single segment curvedly serial experiment, the stress at all point measured by two sides steel plate-was mostly linear growth. In the across segment curvedly serial experiment, the inclined rate become big and appear anisomerous.

CONCLUSIONIt's proved by biomechanics that the steel plates with single furrow and cylinder wing plus WDFC has a good stability to cure lumbar vertebra slips.

Adult ; Biomechanical Phenomena ; Bone Nails ; Bone Plates ; Female ; Humans ; Lumbar Vertebrae ; surgery ; Male ; Spinal Fusion ; instrumentation ; Spondylolisthesis ; physiopathology ; surgery