Aim To investigate the effect of Tetramethylpyrazine (TMP) on the proliferation of airway smooth muscle cells (ASMCs). Methods Primary ASMCs of rats were cultured. The absorbance (A490) value of ASMCs treatment with platelet-derived growth factor (PDGF) in the presence of TMP was detected by MTTto observe the anti-proliferation of TMP. The levels of ERK1/2 and p-ERK1/2 proteins were determined by Western blot.Results In presence of the TMP with different concentrations (12.5,25,50,100 and 200 ?mol?L-1) at 6,12,24,36 and 48 hours,compared with control groups,the average inhibitory rates of cell proliferation in all groups were increased significantly (P

Objective To investigate whether IL-17 could stimulate the vascular endothelial growth factor (VEGF) production on HaCaT cells alone. We also investigated whether shikonin could inhibited the proinflamation effects of interleukin-17(IL-17) acting on HaCaT cells. MethodsWe examined the expression of VEGF by double antibody sandwich enzyme-linked immunosorbent assay ( ELISA ) and realtime polymerase chain reaction(RT-PCR) in HaCaT cells and the cell supernatant. The viability of HaCaT cells in the drug group was detected by the Cell Counting Kit-8 (CCK-8). ResultsThe expression of VEGF in different time IL-17-stimulated groups on HaCaT cells and the cell supernatant were higher than the control group( P＜0.001 ). The expression of VEGF in different drug treatment groups on HaCaT cells and the cell supematant were lower than the stimulated group by IL-17 ( P＜0. 001 ). The cell viability of different drug treatment groups have no significant difference( P＞0.05 ). ConclusionWe show that IL-17 specifically and time-dependently augmented and induced VEGF expression on HaCaT cells and the cell supernatantThen shikonin markedly inhibited the increase tengency of IL-17 effection on HaCaT cells and the cell supematant level.

ObjectivesTo identified the strain 1012 from the National Center of Clinical Laboratory of China for microbe inter-laboratory quality assessment in 2010, and study the taxonomic status of strain 1012 and related species in the genus Actinomyces. Methods The bacterial traditional morphological characteristics, commercial API systems, and 16S rRNA gene sequence analysis were applied to identify the problematic culture of strain 1012. The phylogenetic tree based on the remote information of the prokaryotes systems was constructed to study the taxonomic status and evolutionary relationship of the genus Actinomyces and related species in the family Actinomycetaceae. Results Strain 1012 was determined as a kind of facuhative anaerobic,non-spot-forming,Gram-positive coryneformbacteria,which was identifiedto Actinomyces turicensis for the phenotypic biochemical characteristics of more than 60 items, The comparative study of 16S rRNA gene showed the strain 1012 with 99. 8％ similarities to Actinomyces turicensis, but only 90. 6％ to the type species of Actinomyces bovis in the genus Actinomyces. However, the comparative study of 16S rRNA gene showed the strain 1012 with only 90. 6％ homology to the type species of Actinomyces bovis in the genus Actinomyces. Further phylogenetic analysis showed that nine independent clusters were grouped in the family Actinomycetaceae, of which four clusters were separately represented the genera Varibaculum,Mobiluncus, Actinobaculum and Arcanobacterium, while other five clusters all were designated to the genus Actinomyces. The study showed strain 1012 was located in genus Ⅲ of Actinomyces, yet with a relatively long genetic distance to Actinomyces bovis. ConclusionThe genus Actinomyces may be reclassified as one genus Actinomyces sensu stricto and several new genera for the genotypic characteristics.

Objective To explore the influence of tranSCription factor FOXC2 in angiogenesis of breast cancer MCF-7 cells and to clarify the action mechanism of FOXC2 in promoting tumor angiogenesis.Methods FOXC2 gene and empty vector gene were transfected into breast cancer of MCF-7 cell line with FOXC2 lentivirus gene transfection technique to obtain stable transfection cell line. The MCF-7 cells were devided into non-transfected group,empty-vector group and over-expression group.Matrigel assay and Transwell chamber test were used to observe the changes of tube formation and migration ability of human umbilical vein endothelial cells (HUVECs)in MCF-7 cells supernatant in various groups. PT-PCR and Western blotting methods were applied to detect the expressions of FOXC2,DLL4 and Notch1 mRNA and protein.Results Compared with non-tranfected group and empty-vector group,the tube formation and the migration number of HUVECs in FOXC2 over-expression group were increased(P<0.05);the expressions of FOXC2,DLL4 and Notch1 mRNA and proteins were significantly increased(P<0.05).Conclusion The FOXC2 over-expression in MCF-7 cells can increase the tube formation ability and migration ability of HUVECs,and its mechanism may be related to Notch signaling pathway.

Objective:To explore clinical application value of immediate breast reconstruction with silicone prosthesis after nipple areolar sparing mastectomy for breast cancer.Methods:The clinical data of 30 breast cancer patients underwent immediate breast reconstruction with the silicone prosthesis after nipple areolar sparing mastectomy from January 2016 to January 2018 were collected. In the observation group, 15 patients underwent immediate breast reconstruction with the silicone prosthesis after nipple areolar sparing mastectomy. In the control group, 15 patients underwent conventional modified radical mastectomy only. The differences of operation indicator and postoperative complications between the two groups were compared, and the postoperative cosmetic effects were evaluated.Results:The patients successfully completed prosthetic breast reconstruction in the observation group. The surgical time and indwelling time of the drainage tube in the observation group were both increased compared with the control group, and the difference was statistically significant ( t=118.8 and t=23.9, P<0.05). There were no statistically significant differences between the two groups in the complications of postoperative flap necrosis, subcutaneous hematoma, intraoperative infection and incision dehiscence ( P>0.05). The total complications rate of the observation group was 40%, compared with the control group (20%), there were not statistically significant differences ( P>0.05). The postoperative aesthetic effect evaluation showed that the reconstructed breast was full in shape and basically symmetrical to the contralateral side, with an excellent and good rate of 83.3%. The patients were satisfied with the appearance of the breast. All patients were followed up for 12 to 36 months with the average time of 24 months, and local recurrence and distant metastasis were not observed. Conclusions:In the modified radical mastectomy for breast cancer with preserved nipple and areola, the immediate application of silicone prosthesis for breast reconstruction has the advantages of less trauma, faster postoperative recovery and better cosmetic effect, which is worthy of clinical application.

OBJECTIVETo explore the expression of breast cancer resistance protein (ABCG2), p-glycoprotein (P-gp) in residual breast cancer tissue after chemotherapy and their correlation with epithelial mesenchymal transition (EMT).

METHODSSeventy-six cases of breast cancer were collected. The expression of ABCG2, P-gp and EMT markers E-cadherin and vimentin in residual breast cancer tissue after chemotherapy was detected by immunohistochemistry (EnVision method). MCF7 cells were divided into three group:untreated control group, positive control (TGF-β1 induced) group and drug surviving cells (DSC) group (selected viable MCF7 cells after docetaxel and epirubicin treatment). The expression of EMT markers E-cadherin and vimentin was detected by immunofluorescence. The mRNA and protein expression of ABCG2, P-gp and EMT markers were detected by reverse transcription-polymerase chain reaction (RT-PCR) and Western blot, respectively.

RESULTSCompared with breast cancer tissue before chemotherapy, ABCG2, P-gp and vimentin protein were highly expressed in residual breast cancer tissue after chemotherapy. The expression of ABCG2 and P-gp correlated positively with vimentin protein (r1=0.97, P1=0.000; r2=0.83, P2=0.001) and negatively with E-cadherin protein (r3=-0.55, P3=0.010; r4=-0.43, P4=0.020) expression. RT-PCR results showed that ABCG2, P-gp and vimentin mRNA were highly expressed in residual breast cancer tissue after chemotherapy. The expression of ABCG2 and P-gp mRNA correlated positively with vimentin mRNA (r1=0.99, r2=0.96, P<0.05) but negatively with E-cadherin protein (r3=-0.99, r4=-0.98, P<0.05); Western blot showed that ABCG2, P-gp and vimentin protein were highly expressed in residual breast cancer tissue after chemotherapy. The expression of ABCG2 and P-gp protein correlated positively with vimentin protein (r1=0.98, r2=0.89, P<0.05) and negatively with E-cadherin protein (r3=-0.47, r4=-0.33, P<0.05).

CONCLUSIONSThe expression of resistance-associated proteins in the residual breast cancer tissue after chemotherapy is significantly correlated with EMT. The expression of EMT profile may be one of important mechanisms for multidrug resistance in breast cancer.

ATP Binding Cassette Transporter, Sub-Family B ; genetics ; metabolism ; ATP Binding Cassette Transporter, Sub-Family G, Member 2 ; ATP-Binding Cassette Transporters ; genetics ; metabolism ; Adult ; Aged ; Antibiotics, Antineoplastic ; pharmacology ; Antineoplastic Agents ; pharmacology ; Antineoplastic Combined Chemotherapy Protocols ; therapeutic use ; Breast Neoplasms ; metabolism ; pathology ; therapy ; Cadherins ; genetics ; metabolism ; Cyclophosphamide ; therapeutic use ; Doxorubicin ; therapeutic use ; Epirubicin ; pharmacology ; Epithelial-Mesenchymal Transition ; Female ; Humans ; MCF-7 Cells ; Middle Aged ; Neoplasm Proteins ; genetics ; metabolism ; Neoplasm, Residual ; metabolism ; RNA, Messenger ; metabolism ; Taxoids ; pharmacology ; therapeutic use ; Vimentin ; genetics ; metabolism

In this paper, We designed and accomplished a low frequency pulsed strong magnetic fields generator, which provides a pulsed magnetic field with the intensity range from 0.1-2.5 T and the adjusted time interval of pulse. This device is easy to operate and performs reliably. It can work steady for a long time and has been successful used in the experiments of biological effects of electromagnetics.
Electromagnetic Phenomena ; instrumentation ; Equipment Design ; Software Design

Objective:To observe the difference in the effect of simple titanium plate internal fixation and titanium plate internal fixation combined with titanium nail intermaxillary traction in the treatment of jaw fractures and their impact on the oral and maxillofacial function of patients.Methods:From August 2016 to May 2021, 94 patients with jaw fractures admitted to the Department of Stomatology, Linyi Central Hospital, Shandong (supplementing the gender, age range and average age of the patients), were divided into 47 cases in the control group, and the titanium plates were used alone, combined operation group 47 cases, titanium plate internal fixation combined with intermaxillary traction with titanium nails. The changes of oral and maxillofacial function and fracture healing were measured before operation and 3 months after operation, and the perioperative indicators and postoperative complications were recorded.Results:Three months after operation, the scores of maxillofacial function, mouth function and masticatory function in the combined operation group (0.52±0.09 points, 0.67±0.12 points, 0.58±0.08 points) were significantly lower than those in the control group (1.05±0.21 points, 1.14±0.22 points, 1.02±0.21 points) ( t=15.90, 12.86, 13.42, P<0.05). The effective rate of the combined operation group was 95.74% (45/47), which was significantly higher than that of the control group (80.85%, 38/47) (χ 2=5.05, P<0.05); there was no significant difference in operation time and hospitalization time between the groups ( P>0.05), the fracture healing time in the combined surgery group (65.02±7.06) d was significantly shorter than that in the control group (82.69±10.25) d ( t=9.73, P<0.05). The postoperative complication rate of combined treatment group was 6.38% (3/47), which was significantly lower than the control group 21.28% (10/47) (χ 2=4.37, P<0.05). Conclusions:In the treatment of jaw fractures, titanium plate internal fixation combined with titanium nail intermaxillary traction treatment can significantly improve the oral and maxillofacial function of patients, promote postoperative fracture healing, improve curative effect and reduce the incidence of complications compared with simple titanium plate internal fixation.

Background and purpose:Limbs soft tissue sarcoma(STS)is a common malignant tumor,and surgical resection is the main treatment method for it.The concept of barrier made us realize the blocking effect of natural barrier on STS,and we aimed to search for tissues that can act as barrier,and to perform complete resection of surgical margins around the tissue barrier.This study aimed to investigate the feasibility,safety and prognosis of barrier resection in the treatment of limbs STS.Methods:From December 2013 to September 2016,data of 72 patients who underwent barrier resection of STS of extremities in department of oncosurgery,Minhang Branch,Fudan University Shanghai Cancer Center were retrospectively analyzed,and the resection margin was sampled.All 72 patients underwent preoperative magnetic resonance imaging(MRI)or computed tomography(CT)design,and the physiological barrier or at least 3 cm distance was found outward from the anatomical location of the tumor.And en bloc excision was performed outside this barrier or at a distance of 3 cm.The influence of postoperative pathological margin,musculoskeletal tumor society(MSTS)score and postoperative complications on the patients were analyzed.The 1-and 3-year locoregional recurrence-free survival(LRFS)rates and sarcoma-specific survival(SSS)rates were evaluated,and the influencing factors were analyzed.This study was approved by the Ethics Committee of Fudan University Shanghai Cancer Center(number:1212117-12&1212117-12-1301).Results:All patients had negative margins.The 1-and 3-year LRFS rates were 98.2%and 93.3%,respectively.The 1-and 3-year SSS rates were 98.4%and 94.2%,respectively.The mean MSTS scores were 28.3 preoperatively and 25.5 postoperatively.Surgical complications were grade 1 to 2 in 20 cases and grade 3 in 1 case,and there were no grade 4 to 5 complications.Conclusion:Based on the combination of clinical,imaging and pathology data,barrier resection,including tumor resection and functional reconstruction,can be applied to the surgical treatment of STS,with good feasibility and safety,reliable margin and satisfactory local control.

Objective:To explore the clinical application of lateral thoracic artery perforator flap in repairing local defect after breast conserving surgery.Methods:The clinical data of 48 breast cancer patients planned to finish breast conserving surgery were retrospectively analyzed. The patients were divided into plastic breast-conserving group and routine breast conserving group. In the plastic breast-conserving group, 24 patients local defect repaired with the lateral thoracic artery perforator flap. In the routine breast conserving group, 24 patients local defect repaired with the fascial flap around the cutting edge. The operation related indexes and cosmetic effect from two groups were compared.Results:Both groups of patients successfully completed breast conserving surgery. The plastic breast-conserving group patients had significantly increased in operation time, operative blood loss, incision length and drainage tube indwelling time compared with the routine breast conserving group; the differences were statistically significant ( t=6.99, 9.37, 21.74, 8.80, P<0.05). The rate of secondary surgery enlarged was lower than fhat in the routine breast conserving group, and the difference was statistically significant (χ 2=4.76, P<0.05). There were 3 cases in the plastic breast conserving group and 1 case in the conventional breast conserving group. The skin at the edge of the flap was ischemic necrosis in the 4 cases, which healed after dressing change and drainage, and there was no significant difference ( P>0.05). The evaluation of postoperative cosmetic effect showed that the excellent and good rate of the observation group was 91.7%, compared with the routine breast conserving group (58.3%); the difference was statistically significant (χ 2=7.11, P<0.05). All patients were followed up for average 24 months, and local recurrence and distant metastasis were not observed. Conclusions:The lateral thoracic artery perforator flap for filling local defects in the lateral quadrant or central region of breast cancer is feasible, easy to operate, hides incision scar, better cosmetic effect and worthy of clinical promotion.