Objective MicroRNA-145 (miR-145) is underexpressed in breast cancer. The study aimed to explore the regulatory effect of miR-145 on breast cancer MCF-7 cells by investigating the association of miR-145 with ADAM17 and EGFR. Methods The MCF-7 breast cancer cells were divided into three groups: the transfection group (transfected with microRNA-145 mimics), the control group (without transfection) and the nonsense sequence group (transfected with nonsense microRNA). MTT, transwell and real-time quantitative fluorescence polymerase chain reaction(qPCR) were respectively used to detect the proliferative capacity, invasive ability and expression of MCF-7 breast cancer cells after the transfection of miR-145 in three groups. ADAM17 and EGFR mRNA and protein levels in three groups of breast cancer MCF-7 cells were detected by qPCR and western blot. Results The results of qPCR showed that the relative expression of miR-145 was significantly higher in transfection group (13964.33±1265.30) than those in control group (1.00±0.05) and nonsense sequence group (1.03±0.15) and the difference was statistically significant (P<0.01); the expression of ADAM17 mRNA in transfection group (1.71±0.08) was significantly higher than that in control group (1.00±0.07) and the difference was statistically significant (P<0.01). Compared with the nonsense sequences at 24 h, 48 h, and 72 h, the inhibition rate of MCF-7 in transfection group was significantly increased (P<0.01). The results of transwell invasion showed that the number of transmembrane cells in transfection group [(56.20±2.17)/field] was significantly lower than those in control group [(92.80±3.90)/field] and nonsense sequence group [(91.80±4.97)/field of view ] (P < 0.01). Western blot results showed that the protein content of ADAM17 and EGFR in transfection group was significantly lower than those in the control group and the nonsense sequence group (P<0.01). Conclusion MiR-145 inhibits the proliferation and invasion of breast cancer MCF-7 cell line by acting on the ADAM17-EGFR signaling pathway.

A total of ten compounds were isolated from the 90% Et OH extract of Cassia siamea by using various chormatographic techniques,and their structures were established as( 2' S)-2-( propan-2'-ol)-5,7-dihydroxy-benzopyran-4-one( 1),chrobisiamone( 2), 2-( 2'-hydroxypropyl)-5-methyl-7-hydroxychromone( 3), 2,5-dimethyl-7-hydroxychromone( 4), 2-methyl-5-acetonyl-7-hydroxychromone( 5),3-O-methylquercetin( 6),3,5,7,3',4'-pentahydroxyflavonone( 7),luteolin-5,3'-dimethylether( 8),4-( trans)-acetul-3,6,8-trihydroxy-3-methyl-dihydronapht halenone( 9) and 6-hydroxymellein( 10) based on the spectroscopic data.Compound 1 was a new compound,and 3,4,6,8 were isolated from this plant for the first time.
Cassia ; Luteolin ; Senna Plant ; Spectrum Analysis

Objective To investigate the effects of CYP2B6 * 6 gene polymorphism on the pharmacokinetics and pharmacodynamics of propofol in Chinese healthy subjects.Methods Twenty male healthy subjects were intravenously injected a single dose of 2.0 mg · kg-1 propofol.The plasma concentration of propofol was examined by HPLC-MS/MS method.The genotype of the subjects was determined by pyrosequencing.The pharmacokinetics and pharmacodynamic parameters of different genotype were compared.Results Among the 20 subjects,there were 14 cases of G516T-GG,6 cases of G516T-GT/TT,10 cases of A785G-AA and 10 cases of A785G-AG/GG.The bispectral index-loss of conscious (BIS-LOC) of G516T-GT/TT group and G516T-GG group were 74.33 ± 7.20 and 60.43 ± 13.64,the t1/2β of A785G-AG/GG group and A785G-AA group were (0.13 ±0.06) and (0.41 ±0.38)h,with significant difference (P ＜ 0.05).Other parameters like Cmax,tmax,AUC0-t,AUC0-∞,t1/2α,MRT0-∞,t-LOC,BIS-LOC,BIS-ROC,t-BISmin,BISmin,d-LOC all had no statistical significance (all P ＞ 0.05).Conclusion The pharmacokine-tics and pharmacodynamics of propofol are correlated with the polymorphism of CYP2B6 * 6,individualized dosing regimens based on genotypes contribute to the rational use of propofol.

OBJECTIVETo observe the dynamic changes of Th17/Treg balance in patients following surgical intervention for intracranial aneurysm rupture.

METHODSThe percentage of Th cells and the intracellular IL-17 level, Treg cell percentage and transforming growth factor -β1 (TGF-β1) levels were examined in 73 patients with rupture of aneurysms before and at 24 h, 72 h and 1 week after operation, with 62 patients with unruptured aneurysms and 65 healthy volunteers as the control. The correlations among the immune cells, cytokines and clinical characteristics of the patients (NIHSS, ADL and hospitalization stay) were analyzed.

RESULTSTh17 percentage and intracellular IL-17 levels were significantly higher in the patients with ruptured and unruptured aneurysms than in the healthy volunteers, and were significantly higher in patients with ruptured aneurysms than in those with unruptured aneurysms. Treg cell percentage and TGF-β1 level were significantly lower in patients with aneurysms than in the healthy volunteers, and were lower in patients with ruptured aneurysms than in those with uruptured aneurysms (P<0.05). Patients with intracranial aneurysm rupture showed significantly increased Th17 cell percentage and IL-17 level but significantly lowered Treg cell percentage and TGF-β1 at 24 h following the surgery (P<0.05); these changes were reversed significantly at 72 h and 1 week after the surgery. Th17 cell percentage and IL-17 level were positively correlated with NIHSS and the length of postoperative hospital stay but inversely correlated with ADL; Treg cell percentage and TGF-β1 were inversely correlated with NIHSS and hospital stay but positively with ADL (P<0.05).

CONCLUSIONIn patients with intracranial aneurysms, the systemic immune inflammatory response is highlighted by excessive Th17 cells and insufficient Treg cells, which are closely related with the outcomes of the patients following surgical intervention. Evaluation of Th17/Treg balance and the cytokine levels can help to assess the prognosis of patients with aneurysm rupture.

Aneurysm, Ruptured ; immunology ; Flow Cytometry ; Humans ; Interleukin-17 ; blood ; Intracranial Aneurysm ; immunology ; Postoperative Period ; Prognosis ; T-Lymphocytes, Regulatory ; cytology ; Th17 Cells ; cytology ; Transforming Growth Factor beta1 ; blood

OBJECTIVETo explore the effect of half circle external fixation for the treatment of open tibial fractures.

METHODSFrom March 2005 to March 2011, 94 patients with open tibiofibula fractures were treated by closed manipulative or Kirschner-wire poking reduction with half circle groove external fixation including 63 males and 31 females with an average age of 39 years old ranging from 17 to 65 years old. Among these patients, 5 cases were cross shaped fractures, 19 were oblique form and spiral fractures, 70 cases were comminuted fractures. According to the fracture Gustilo classification, 49 cases were type IIIA, 45 were type IIIB. The incidence of wound infection, fracture healing time were observed. The function was evaluated according to the Johner-Wruhs standard.

RESULTSAll patients were followed up for 14 to 63 months (averaged 29 months). The wound healing time was from 16 to 39 weeks (means 21.4 weeks). No fracture nonunion, osteomyelitis and calf compartment syndrome occurred. The wounds of 81 cases were healed at the first period,deep wound infection occurred in 2 cases. According to the function Johner-Wruhs evaluation criteria:the result was excellent in 52 cases, good in 37 cases, fair in 5 cases.

CONCLUSIONClosed manipulative or Kirschner-wire poking reduction and half circle groove external fixation can reduce the infection rate of open tibiofibula fractures. For open tibiofibula comminuted fractures, after the half circle groove external fixation for 3 to 6 weeks, a middle Kirschner-wire was removed according to fracture end healing situation to make fixation dynamic and promote fracture healing.

Adolescent ; Adult ; Aged ; Bone Wires ; External Fixators ; Female ; Fracture Fixation ; instrumentation ; Fractures, Comminuted ; surgery ; Fractures, Open ; surgery ; Fractures, Ununited ; surgery ; Humans ; Male ; Middle Aged ; Tibial Fractures ; surgery ; Young Adult

Objective:To explore the effect of half circle external fixation for the treatment of open tibial fractures. Meth-ods: From March 2005 to March 2011,94 patients with open tibiofibula fractures were treated by closed manipulative or Kirschner wire poking reduction with half circle groove external fixation including 63 males and 31 females with an average age of 39 years old ranging from 17 to 65 years old. Among these patients ,5 cases were cross shaped fractures ,19 were oblique form and spiral fractures,70 cases were comminuted fractures. According to the fracture Gustilo classification,49 cases were typeⅢA,45 were typeⅢB. The incidence of wound infection,fracture healing time were observed. The function was evaluated according to the Johner Wruhs standard. Results:All patients were followed up for 14 to 63 months (averaged 29 months). The wound healing time was from 16 to 39 weeks (means 21.4 weeks). No fracture nonunion,osteomyelitis and calf compart-ment syndrome occurred. The wounds of 81 cases were healed at the first period ,deep wound infection occurred in 2 cases. According to the function Johner-Wruhs evaluation criteria:the result was excellent in 52 cases,good in 37 cases,fair in 5 cases. Conclusion:Closed manipulative or Kirschner wire poking reduction and half circle groove external fixation can reduce the infection rate of open tibiofibula fractures. For open tibiofibula comminuted fractures ,after the half circle groove external fixation for 3 to 6 weeks,a middle Kirschner wire was removed according to fracture end healing situation to make fixation dy-namic and promote fracture healing.