Objective:To investigate the effects of sodium phenylbutyrate(NaPB) on the matrix metalloproteinase-9(MMP-9) and tissue inhibitor of metalloproteinase-1(TIMP-1) expression and invasive ability of human thyroid follicular carcinoma cell line CGTHW-1.Methods: CGTHW-1 cells were treated with different concentrations of NaPB,then the invasive ability of CGTHW-1 cells was assessed using Transwell assay.The expression of MMP-9 and TIMP-1 was examined by immunocytochemistry staining and RT-PCR in CGTHW-1 cells.Results: After treatment with NaPB(4 mmol/L) for 72 h,CGTHW-1 cells passing the Transwell were significantly reduced[(29.8?1.77) vs(11.00?2.59),P

Animals ; Cells, Cultured ; Female ; HSP70 Heat-Shock Proteins ; genetics ; metabolism ; Humans ; Lead ; pharmacokinetics ; toxicity ; Liver ; metabolism ; Male ; RNA, Messenger ; genetics ; Rats ; Rats, Wistar

Objective To observe the influence of local-anaesthetic combined with dezocine on brachial plexus block and postoperative analgesia.Methods 60 patients scheduled for unilateral upper limb operation were randomly divided into two groups of C group and D group with 30 cases in each group.The brachial plexus block was performed under ultrasound guiding.Two groups received a bolus injection of local anesthetic 30ml,but the local bolus injection of D group consisted of Dezocine 10mg.The tine of sensory blocked producing effect,anesthesia effect,sensory blocked duration were observed.Two hours after sensory nerve recovered,the scores of VAS pain and Ramsay Sedation were recorded.Adverse reactions of perioperation were also observed(nausea,vomiting,dizzy,respiratory,urine retention,pruritus).Results The sensory blocked duration in D group was(7.1±1.1)h,which was significantly longer than that of C group[(4.5±0.8)h](t=10.47,P＜0.01);Two hours after sensory nerve recovered,the score of VAS pain in D group was(1.7±0.7)points,and significantly lower than that of C group[(3.9±1.0)points](t=9.87,P＜0.01).Both two groups had no adverse reactions.Conclusion Addition dezocine 10mg to local anesthetic solutions for interscalene brachial plexus block,it could prolong the sensory block duration,provide satisfactory postoperative analgesia,have no adverse reactions.

Objective To investigate the effect of integrin β4 expression on the metastasis potential of human thyroid follicular cancer cells. Methods Metastasis potential was observed and grouped in human thyroid follicular cancer cell line, CGTHW-1 cells, depending on the cells' penetrating ability in artificial matrigel. The expression of integrin β4 mRNA and protein were determined by immunocytochemistry, Western blot, and semiquantitative RT-PCR. Results The mRNA and protein expressions of integrin β4 were significantly higher in cells with high metastasis potential [0.277 5 ±0.034 0 vs 0. 187 5 ±0.022 2 ( Immunohistochemistry ), 0. 099 7 ± 0.0185 vs 0.039 0±0.010 2(Western blot), 0.555 0±0. 101 2 vs 0.270 0±0.029 9(RT-PCR), all P＜0.01]. Conclusion Integrin β4 may play an important role in human thyroid cancer invasion. It seems probably to be a potential target for human thyroid cancer treatment.

OBJECTIVETo explore the clinical application of mandibular-driven simultaneous maxillo-mandihular distraction to correct hemifacial microsomia with rapid prototyping technology.

METHODSThe patient' s skull resin model was manufactured with rapid prototyping technology. The osteotomy was designed on skull resin model. According to the preoperative design, the patients underwent Le Fort I osteotomy and mandibular ramus osteotomy. The internal mandible distractor was embedded onto the osteotomy position. The occlusal titanium pin was implanted. Distraction were carried out by mandibular-driven simultaneous maxillo-mandihular distraction 5 days after operation.

RESULTSThe distraction in five patients was complete as designed. No infection and dysosteogenesis happened. The longest distance of distraction was 28 mm, and the shortest distance was 16 mm. The facial asymmetry deformity was significantly improved at the end of distraction. The ocelusal plane of patients obviously improved.

CONCLUSIONSRapid prototyping technology is helpful to design precisely osteotomy before operation. Mandibular-driven simultaneous maxillo-mandibular distraction can correct hemifacial microsomia. It is worth to clinical application.

Face ; abnormalities ; surgery ; Facial Asymmetry ; congenital ; surgery ; Goldenhar Syndrome ; surgery ; Humans ; Hyperplasia ; surgery ; Mandible ; surgery ; Maxilla ; surgery ; Osteogenesis, Distraction ; methods ; Osteotomy ; methods ; Osteotomy, Le Fort

Benzene ; adverse effects ; analysis ; chemistry ; Catalysis ; Humans ; Occupational Exposure ; Risk Assessment ; Vehicle Emissions ; analysis ; Workplace

Objective To explore the diagnostic significance of differential cell count in induced sputum to chronic cough and assessment of airway inflammation.Methods The sputum of 335 chronic cough patients were induced.Differential cell counts were measured in these samples.The side effects were observed during the induced procedure.The final diagnosis was made based on clinical manifestation and examination findings including pulmonary function tests,provocation test,induced sputum cell differentials, etc.Results The cause of chronic cough was defined in 322 patients.The six most important causes of cough were typical asthma(TA,n=84),eosinophilic bronchitis (EB,n=62),atopic cough (AC,n= 42),cough variant asthma (CVA,n=40),gastroesophageal reflux cough(GERC,n=37),rhinitis and/ or paranasal sinusitis (PNDs,n=32),and others and indefinite cause (n=25,13).Percentage of eosinophils were significantly increased in the induced sputum of AC,EB,CVA,and GERC patients (0.005,0.052,0.059,0.234) compared with those in other causes and the healthy controls (0) (P

OBJECTIVETo study the genotoxicity of components of diesel engine exhausts with ethanol-diesel blending fuel. To provide scientific arguments to find more economical and less polluted fuels.

METHODSAmes test, comet assay and GC-MS technique were used to test the genotoxicity and 16 kinds of PAHs on diesel engine exhausts with different proportions of ethanol (E0, E5, E10, E20).

RESULTSBoth Ames test and comet assay were positive. It shows that diesel engine exhausts can lead to mutation and DNA damage, especially in pure diesel oil. But the content of 16 kinds of PAHs and DNA damage level decreased in exhausts of E5. With the increase of ethanol proportion in diesel oil, the content of 16 kinds of PAHs and DNA damage level increased.

CONCLUSIONCompared with pure diesel oil and high proportion of ethanol fuel, E5 can reduce the genotoxicity and the brake specific exhausts of PAHs.

Air Pollutants ; toxicity ; Air Pollution ; Carbon Monoxide ; Comet Assay ; DNA Damage ; Ethanol ; toxicity ; Gasoline ; toxicity ; Mutagenicity Tests ; Particulate Matter ; Vehicle Emissions ; toxicity

OBJECTIVETo observe the regulatory effect of assorted use of Chinese drugs for detoxifying and activating blood circulation on serum high sensitive C-reactive protein (hs-CRP) in apolipoprotein E gene knock-out [ApoE (-/-)] mice.

METHODSApoE (-/-) mice of 13-week old were devided into two groups, 12 in Group A fed with common forage and 98 in Group B with high lipid forage. Besides, 12 C57 BL/6J mice, 13-week old, were set as Group C fed with common forage. After being fed for 19 weeks, and the formation of vulnerable plaque had been confirmed in 2 mice of Group B, the other 96 mice were sub-divided into 8 groups, 12 in each group. Except that 0.4 mL normal saline was infused to the Group B1 as well as Group A and C, the other 7 sub-groups of Group B were respectively medicated with various drugs as follows: B2, Polydatin (PD, an extract from giant knotweed rhizome for detoxicating) 26. 6 mg/kg; B3, Xiongshao Capsule (XS, a Chinese herbal preparation for activating blood circulation), 110 mg/kg; B4, PD 53.2 mg/kg + XS 220 mg/kg; B5, PD 26. 6 mg/kg + XS 110 mg/kg; B6, PD 13.3 mg/kg + XS 55 mg/kg; B7, Lovastatin 3.3 mg/kg; and B8, Xuezhikang (XZK, a Chinese patent drug) 0.2 g/kg, all were administered by dissolving in 0.4 mL of distilled water for gastrogavage. The serum contents of hs-CRP were detected, with blood sample drawing from inferior vena cava, using enzyme-linked immunosorbent assay 17 weeks after medication.

RESULTSThe hs-CRP level was significantly higher in Group B1 than in Groups A and C (P <0.05, P <0.01). Comparisons between various sub-groups of Group B in hs-CRP content showed that hs-CRP in Group B2, B4 and B7 was lower than that in B1 (P <0.01), hs-CRP in Group B4 was the lowest, and hs-CRP was lower in Group B2 than in Group B3.

CONCLUSIONAssorted use of Chinese drugs for detoxifying and activating blood circulation could reduce serum hs-CRP level in ApoE (-/-) mice.

Animals ; Apolipoproteins E ; genetics ; metabolism ; Atherosclerosis ; drug therapy ; genetics ; metabolism ; physiopathology ; Blood Circulation ; drug effects ; C-Reactive Protein ; metabolism ; Disease Models, Animal ; Drugs, Chinese Herbal ; administration & dosage ; Female ; Humans ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Random Allocation

AIM AND METHODSThe properties and sensitivity to acetylcholine of PC12 cells differentiated with nerve growth factor (NGF) have been investigated by using whole-cell clamp technique.

RESULTSWhen cultured in the presence of NGF, PC12 cells not only differentiated to resemble sympathetic neurons morphologically, but also developed electrical excitability. NGF-treated PC12 cells were highly sensitive to ACh than untreated cells. The I(Ach) proved to be generated by nAChR by pharmacological identification. Nicotinic receptor was characterized by desensitization. The macroscopic I(ACh) was inward rectified and concentration dependent.

CONCLUSIONPC12 cells are easily cultured and provides a homogenous population of cells. When culture in NGF, they differentiate to sympathetic-like neurons that contain on their surface neuronal nAChR, it can be used as good model system for studying regulation of a sympathetic neuronal nAChR.

Acetylcholine ; pharmacology ; Animals ; Cell Differentiation ; Nerve Growth Factor ; metabolism ; Neurons ; metabolism ; PC12 Cells ; Patch-Clamp Techniques ; Rats ; Receptors, Nicotinic ; metabolism