AIM To study the effects of growth inhibition of different concentrations of diallyl trisulfide(DATS) on gastric cancer MGC 803 cell line in vitro. METHODS The influence of different concentrations of DATS were examined by MTT assay, clonal formation rates and cell growth curve. RESULTS Suppression and decrease of MGC 803 cell proliferation was found after treatment by DATS in vitro. The inhibitory rates on MGC 803 cell growth of different concentration of DATS,4, 8, 12, 16 and 24 mg?L -1 , were 26%,46%,65%,76% and 89% respectively, and its half inhibitory concentration (IC 50 ) was 8 2 mg?L -1 . The clonal formation rates and clonal formation relative counts of 8, 12, 16 and 24 mg?L -1 were 32 4% and 58 7%,24 8% and 42 5%,19 0% and 33 5%?8 8% and 15 1% respectively.There was significant correlation between dose and effect in all, and the cell growth culve became lower and flatter when concentration of DATS increase gradually. CONCLUSION The effect of growth inhibition of DATS for gastric cancer MGC 803 cell in vitro is remarkable.

Objective To design and develop a kind of SpO2 detection and analysis system based on LabVIEW. Methods Pulse signal process and SpO2 calculation were achieved by designing a control system based on TI Company's MSP430FG439 MCU and using the digital signal process and graphic controls of the LabVIEW software. The design project and the realization way were given out by discussing the software of LabVIEW. Results The system could acquire, display and process pulse signal and calculate SpO2. Conclusion The system carries out a new way to design medical monitor equipment. Furthermore, it provides a shortcut for special analysis of the SpO2 and pulse signal in clinic.

Objective To observe and analyze the CT and MR imaging of the structures in the region of the jugular foramen (JF) on the base of thin-slice anatomic study. Methods Having been scanned by multislice CT and 1.5T MR scanner, two formalin-preserved adult cadavers were dissected into 1.0 mm thickness contiguous sections in transverse plane. Twenty cases without skull base and nasopharyngeal history received routine and post-contrast CT examinations with spiral and HQ mode. Twenty healthy volunteers received MR scanning, including SE T 1WI, FSE T 2WI, and 3D RF-FAST (3D Radio-Frequency Fourier Acquired Steady-State) sequences. Results JF region was divided into three levels, which included inner aperture, the jugular cavity, and the outer aperture. At the entrance of JF, there were glossopharyngeal canal and vagal canal, which wrapped the Ⅸ nerve and Ⅹ and Ⅺ nerves, respectively. CT images could display these canals in 20 cases (100%). Furthermore, the Ⅸ, Ⅹ, and Ⅺ nerves could be identified on different MR sequences. 17 cases (85%) were displayed on 3D RF-FAST, 14 cases (70%) on SE T 1WI, and 10 cases (50%) on FSE T 2WI, respectively. From the anterior to the posterior compartment within the JF cavity, the structures ranged as follows: the Ⅸ nerve, the inferior petrosal sinus, the Ⅹ and Ⅺ nerves, and the jugular bulb. These neuro-vessel structures could not be distinguished on CT, SE T 1WI, and FSE T 2WI images, except for 3D RF-FAST (16 cases, 80%). The outer aperture of JF was adjacent to the hypoglossal canal. The shape of JF outer aperture could be evaluated on CT images. On the oblique plane, which was parallel to the hypoglossal canal, the posterior cranial nerves could be detected to enter/exit the skull through the JF and hypoglossal canal separately. Conclusion The complement of CT and MR imaging would be helpful to distinguish the structures in the region of JF.

Objective To explore the clinical characteristics of cardiac involvement in children with mitochondriopathies.Methods The clinical data of 23 children with mitochondriopathies were reviewed.The changes of electrocardiography,echocardiography and heart enzymes were analyzed.Results In 15 cases of mitochondrial encephalomyopathy,lactic acidosis,and stroke-like episode(MELAS syndrome),electrocardiography was performed on 9 cases,6 of them showed abnormal electrocardiographic findings,including right bundle branch block,ST-T change,Wolff-Parkinson-White syndrome,et al.On echocardiographic examination in 9 MELAS syndrome ca-ses,only 1 case showed hypertrophy cardiomyopathy.Six cases had increased plasma creatine kinaseMB(CK-MB) mass and only one of 12 MELAS syndrome cases had increased cardiac troponin I(cTnI) level.In 8 cases of subacute necrotizing encephalomyopathy(Leigh syndrome),electrocardiography was performed on 5 cases,4 of them showed abnormal electrocardiographic findings,including sinus tachycardia,ST-T change and low voltage.Two cases showed normal electrocardiography.Three out of 6 cases with Leigh syndrome showed increased plasma CK-MB mass.The molecular genetic examinations were performed in 13 cases of MELAS syndrome and 6 cases of Leigh syndrome.The mitochondrial DNA nt 3243 A→G mutation was found in white blood cells of 9 MELAS syndrome cases,the mutation rate being 37%-60%.The mitochondrial DNA nt 8993 T→C mutation was found in white blood cells of 2 Leigh syndrome cases.Conclusion In children with mitochondriopathies,myocardiac involvement is comparatively common,and even cardiomyopathy can occur.

Adolescent ; Adult ; Child ; Elliptocytosis, Hereditary ; diagnosis ; genetics ; Female ; Humans ; Male

Objective To investigate the clinical value for treatment of diabetic foot with PTA and PTA combined cinepazide maleate.Methods In 24 cases of diabetic associated vascular disease of lower limb,12 cases were treated with PTA and other 12 cases were treated with PTA combined einepazide maleate,We analysed and compared clinical effects before and after the procedure,together with 3 months follow up.Results In patients treated with PTA,the clinical symptom scores of posttreatment and follow-up decreased;ABI and TcPO_2 increased significantly.The clinical symptom score and ABI of follow-up remained,stable,but TcPO_2 decreased significantly.Control angiography showed improvement in degree of vascular stenosis and peripheral staining of 11 patients after treatment.The vascular patency remained in 12 patients and the peripheral staining decreased in 7 patients on follow-up.In patients treated with VIA combined cinepazide maleate,the clinical symptom score,ABI and TcPO_2 after treatment and on follow-up showed no signifcant changes compared with those in patients treated by PTA.F,Control angiography showed that the degree of vascular stenosis and peripheral staining were improved in 12 patients after treatment.The vascular pateney was maintained and peripheral staining was improved on follow-up.Before and after treatment,there were no significant differences in clinical symptom score.ABI and TcPO_2 between patients treated with PTA and PTA combined cinepazide maleate,however,there were significant differences in clinical symptom score and TcPO_2 on follow-up.Conclusion PTA can significantly improve clinical symptom of diabetic foot and the application of cinepazide maleate is a benefitial and necessary supplement.PTA combined cinepazide maleate can be taken as one of the conventional treatment plans for diabetic foot.(J Intervent Radiol,2007,16:811-815)

Single clones of Leptospirillum ferrooxidans were obtained on bilayer solid medium plate by incorporating Het-erotroph Acidiphilium SJH into the underlayer broth medium. The morphologies of the bacteria were investigated using electronic microscope.

Permeabilized cells containing trehalose synthase from Meiothermus sp.CBS-01 was immobilized by the integration of entrapment in alginate beads with cross-linking and electrostatic self-assembly coating technique.Coating on alginate beads with diazo-resin and poly(styrene sulfonate) can protect the beads from degradation in phosphate buffer,whereas cross-linking with carbodiimide improves the thermostability of trehalose synthase entrapped in alginate beads.By co-immobilization of permeabilized cells using entrapment-cross-linking- coating method,the enzyme recovery was 32%,and the optimum temperature of the enzyme was still 60℃,but the optimum pH was shifted from 6.5 to 7.In batch manner,a maximum conversion yield of 60% trehalose from maltose could be reached by the immobilized cells.Within 4 times repeated use of the immobilized cells,and each time was operated at 50℃ for 24h,more than 50% conversion yield of trehalose could be maintained with less than 20% loss of the enzyme activity.

Objective In this study we conducted a cross-sectional study and reported on the distribution of two common genetic polymorphisms of the PON1 gene and two common genetic polymorphisms of the GST gene as well as the association between those polymorphisms and other predictors in a population of floriculture workers from Kunming city. Methods 136 pesticide-exposed farmers were recruited. PON1 and GST T1, M1 genotype were determined by means of polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). Results (1)Compared with exposure group, the GLB in control group was higher(β=-0.16,t=-2.30, P=0.02), but the A/G in control group was lower (β=0.14,t=2.09,P=0.04); (2) Compared with the persons who carried QQ genotype, the accumulative symptom scores were lower in the persons who carried RR genotype(t=-2.78, P=0.006); (3) Compared with GST T1 carriers, non-carriers' GLB (β=-0.20, t=-3.01, P=0.00)and IgG(β=-0.20,t=-3.01, P=0.00)were higher, but the A/G was lower; (4) The abnormities of cardiograms among people who had been exposed to pesticides were higher compared to people who did not expose to any pesticides (β=1.147, P=0.042). Conclusion PON1-192 and GST T1 gene were associated with the farmers health condition after pesticides exposure.

OBJECTIVETo study the blood enriching effects of Paeoniae Radix Rubra and Paeoniae Radix Alba, paeoniflorin and albiflorin on mouse model of blood deficiency caused by γ-ray radiation.

METHODBuild mouse model of blood deficiency induced by γ-ray radiation. Paeoniae Radix Rubra and Paeoniae Radix Alba were given during modeling. The amount of WBC was detected af- ter the treatment. Based on the result of WBC and paeoniflorin content, albiflorin content in Paeoniae Radix Rubra and Paeoniae Radix Alba, the same model and the same method were used to comparatively study the effect of blood enriching of paeoniflorin and albiflorin.

RESULTOn the 7th day, the amount of WBC in model mice treated with 2 g x kg(-1) Paeoniae Radix Alba and 2 g x kg(-1) Paeoniae Radix Rubra significantly increased compared with that of model group (P < 0.05). In another experiment with the same model, the amount of WBC in model mice treated with 120 mg x kg(-1) paeoflorin and 120 mg x kg(-1) albiflorin significantly increased (P < 0.05) compared with that of model group on the 7th day. On the 10th day, the amount of WBC in rats treated with 120 mg x kg(-1) paeoflorin increased significantly (P < 0.05) compared with that of model group. Compared with the same dose of paeoniflorin, the amount of WBC in mice treated with albiflorin had no significant difference.

CONCLUSIONAll Paeoniae Radix Alba, Paeoniae Radix Rubra, paeoniflorin and al- biflorin can raise the amount of WBC and have the effect of enriching blood induced by radiation, while paeoniflorin and albiflorin have a similar result in this model. The result indicated that both paeoniflorin and albiflorin are effective constituents in Paeoniae Radix Alba, and paeoniflorin work as the common effective constituent in both Paeoniae Radix Rubra and Paeoniae Radix Alba.

Animals ; Bridged-Ring Compounds ; pharmacology ; Gamma Rays ; adverse effects ; Glucosides ; pharmacology ; Leukocyte Count ; Leukocytes ; cytology ; drug effects ; radiation effects ; Male ; Mice ; Monoterpenes ; pharmacology ; Rats