This paper aims to find out the use status of medical and sanitary equipment in primary unit. By means of investigating grass-roots health institutions and summarizing practical works, such problems in equipment were detected as standard vacancy, datedness and laggardness, partly absence, nonstandard management, untimely maintenance and low rate of utilization, etc. This paper puts forward some suggestions corresponding to the above disadvantages.

OBJECTIVE: To study the general pattern and characteristics of the ADR induced by lidocaine.METHODS: A total of 44 ADR cases caused by lidocaine reported in CHKD during 2002～ 2006 were collected and analyzed statistically. RESULTS: Lidocaine-induced ADR were mostly occurred in local anesthesia and block anesthesia,especially in the first time medication and within ten minutes.ADR could involve multiple organs and systems,and the clinical manifestations were complicated and diversified,which were mainly allergic reactions or even death in severe cases.CONCLUSION: Clinical physicians and pharmacists should be alert to the ADR induced by lidocaine and they should stick to the principle of rational drug use.

Humans ; Neoplastic Stem Cells ; Stem Cell Research ; Stomach ; Stomach Neoplasms

Background and purpose:It has been reported that gap junctional (GJ) function was signiifcantly decreased in hepatocellular carcinoma (HCC) tissues and cell lines. However, the increased GJ suppress tumorigenesis and the development of liver cancer. This study therefore aimed to examine the effect of simvastatin on GJ function between Hep3b cells. Thus, the exploition of drugs to increase GJ function between liver cancer cells will provide an efifcient approach to ifght against liver tumor as well as increase cytotoxicity of antitumor agents.Methods:SRB was used to assay the toxicity of simvastatin. The effect of simvastatin on GJ function was determined by “Parachute” dye-coupling assay and scrape loading/dye transfer assay.Results:Pretreated Hep3b cells with simvastatin at the concentration of 1, 5 or 10 μmol/L for 24 h did not induce the cytotoxicity. So simvastatin at the concentration of 5 and 10 μmol/L would not reduce the amount of GJ on cell membranes. “Parachute” dye-coupling assay showed that the treatment with 5 and 10 μmol/L simvastatin for 4 h enhanced the dye spread through GJ in Hep3b cells. Similarly, scrape loading/dye transfer assay showed that simvastatin could induce the increasing spread of lucifer yellow (Ly, Sigma) around the scoifng cells with increasing concentrations.Conclusion:Simvastatin could increase the GJ function of Hep3b cells.

Background and purpose: Gap junctions(GJ) could enhance cytotoxicity induced by chemotherapeutic agents. However, whether or not GJ composed of connexin 43 (Cx43) could increase etoposide cytotoxicity remains unclear. The aim of this study was to explore the effect of GJ composed of Cx43 on etoposide cytotoxicity in testicular cancer cells. Methods: Eighteen-glycyrrhetinic acid and siRNA were used to inhibit GJ function. Retinoid acid was used to enhance GJ function.“Parachute”dye-coupling assay was used to examine dye spread through GJ composed of Cx43 in MLTC-1 cells. “Standard colony-forming assay” was used to examine cell survivals of MLTC-1 cells treated with etoposide. Results: Assayed by “parachute” dye-coupling assay, the dye spread through GJ in MLTC-1 cells was significantly decreased by 18-glycyrrhetinic acid however increased by retinoid acid. Cx43 expression and GJ function in MLTC-1 cells were inhibited by Cx43-siRNA. Results from “standard colony-forming assay” showed that etoposide cytotoxicity was decreased by 18-glycyrrhetinic acid and siRNA, however enhanced by GJ function enhancer retinoid acid. Conclusion:The function inhibition of Cx43 composed GJ in MLTC-1 cells could decrease etoposide cytotoxicity. The enhancement of GJ composed of Cx43 in MLTC-1 could increase etoposide cytotoxicity.

Objective To explore the feasibility of dual-source CT coronary angiography (CTCA) using 80 kV tube voltage setting in patients with low body mass index (BMI).Methods A total of 240 patients with suspected coronary artery disease (BMI range 18.6-21.5 kg/m2) underwent dual-source CTCA.They were randomly assigned to group A (120 kV tube voltage),B (100 kV tube voltage) and C (80 kV tube voltage) based on a random number table.The contrast media dose,volume CT dose index (CTDIvol),dose length product (DLP),and effective dose (ED) were evaluated for each patient.Image noise,CT value,contrast,signal-to-noise ratio (SNR),contrast-to-noise ratio (CNR) and figure of merit (FOM) of coronary artery were all evaluated.Tie image quality of coronary artery was assessed with a threepoint scale (3 points:excellent,2 points:general,1 point:poor).Scan length,CTDIvol,DLP,ED,and contrast media dose for patients,image noise,CT value,contrast,SNR,CNR,and FOM of coronary artery were all analyzed using one-way ANOV4 analysis for 3 groups.Time windows of ECG-pulsing protocol were analyzed using x2 test,and the image quality scores of coronary artery were analyzed using Kruskal-Wallis test.Results There were no differences in scan length and Time windows of ECG-pulsing protocol among 3 groups (scan length F =2.58,P ＞ 0.05,Time windows of ECG-pulsing protocol x2 =0.77,P ＞ 0.05).The average contrast media doses were (82.0 ± 6.4),(76.8 ± 6.1),and (59.1 ± 3.5) ml,the average CTDIvol were(27.5 ±6.2),(18.7 ±4.4),and(11.4 ±2.4)mGy,the average DLPs were (427.7 ±92.4),(295.4 ± 77.1),and (183.9 ± 41.3) mGy · cm,and the average EDs were (6.1 ± 1.3),(4.1 ± 1.1),and (2.6 ± 0.6) msy for group A,B and C,respectively.There were statistical differences in contrast media dose,CTDIvoI,DLP,and ED among 3 groups (the F values for contrast media dose,CTDIvol,DLP,and ED were 383.08,248.13,221.05,and 234.81,respectively,all P ＜0.01).Compared to group A and B,the contrast media dose in group C decreased 27.9％ and 23.0％,and the ED decreased 57.4％ and 36.6％,respectively.The average image noise was (22.6 ±2.2),(26.1 ±3.0),and(29.1 ±3.4)HU for group A,B and C,respectively,and there was statistical difference in image noise among 3 groups (F=101.32,P ＜0.01).The average CT value,contrast,SNR,CNR and FOM were (438.3 ± 66.3)HU,(517.3 ± 67.8)HU,19.5 ±2.8,23.0 ±3.0,and 92.9 ± 31.0 in proximal RCA and (440.2 ±59.9) HU,(509.5 ± 62.6) HU,19.6 ±2.6,22.7 ±2.9,and 90.1 ±29.7 in LMA for group A,(534.2 ± 68.8) HU,(628.9 ±70.0) HU,20.7 ± 3.2,24.3 ± 3.6,and 157.6 ± 59.8 in proximal RCA and (528.4 ± 61.2) HU,(607.9 ± 71.2) HU,20.4±3.0,23.5 ±3.4,and 147.6 ±57.6 in LMA for group B,and (602.1 ±78.8)HU,(696.8 ±83.3) HU,20.8 ± 2.9,24.1 ± 3.2,and 239.3 ± 74.8 in proximal RCA and (592.5 ± 72.3) HU,(671.8 ±82.5) HU,20.5 ± 2.5,23.2 ± 3.0,and 221.8 ± 65.7 in LMA for group C,respectively.The CT value,contrast,SNR,CNR and FOM of coronary artery for group C did not decrease (the F values for CT value,contrast,SNR,CNR and FOM were 106.06,119.90,4.69,3.70,and 127.50 in proximal RCA,and 111.79,101.57,2.68,1.39,and 123.00 in LMA,and the P values were ＜0.01,＜0.01,＜0.05,＜0.05,and ＜0.01,in proximal RCA,and ＜0.01,＜0.01,＞0.05,＞0.05,and ＜0.01,in LMA,respectively).Image quality was rated as excellent,general and bad for 631,330,and 37 segments in group A,640,323,and 41 segments in group B,and 615,348,and 45 segments in group C,respectively,there was no significant difference in image quality scores among 3 groups (x2 =1.90,P ＞ 0.05).Conclusion For the patient with BMI≤21.5 kg/m2,dual-source CTCA with 80 kV tube voltage setting can be used to diagnose coronary artery disease and the contrast media lose and radiation dosage can be reduced obviously.

Objective To investigate the expression of DNA methyltransferases (DNMTs) in liver cancer and its clinical significance. Methods The specimens of liver cancer tissues, adjacent tissues, cirrhotic tissues and chronic hepatitis tissues were collected from 50 patients who received radical resection at the First Affiliated Hospital of Sun Yat-Sen University from July 2007 to April 2008. The mRNA and protein expressions of DNMT1,DNMT3a and DNMT3b in liver cancer tissues, adjacent tissues, cirrhotic tissues and chronic hepatitis tissues were detected by real-time quantitative PCR and immunohistochemical staining. The mRNA expression of DNMTs in the liver cancer tissues was compared with those in the adjacent tissues, cirrhotic tissues and chronic hepatitis tissues by using t test and Mann-Whitney U test. The correlation between the protein expression of DNMTs in the liver cancer tissue and the clinicopathological features was analyzed by chi-square test or Fisher exact test, and the tumor-free survival time was analyzed by using Kaplan-Meier method and the difference in tumor-free survival rate between different patients was analyzed by Log-rank test. Results The mRNA expressions of DNMT1, DNMT3a and DNMT3b in the liver cancer tissue were 2.57, 2.29 and 4.86 times higher than those in the adjacent tissues (t = 3.94, 2. 72, 4. 06, P ＜ 0.05 ). The mRNA expressions of DNMT1, DNMT3a and DNMT3b were 2.38,2.14 and 4.66 times higher than those in the cirrhotic tissues, and 6.12, 4.58 and 12.99 times higher than those in the chronic hepatitis tissues. The mRNA expressions of DNMT1, DNMT3a and DNMT3b in the liver cancer tissue were significantly higher than those in the cirrhotic tissues and chronic hepatitis tissues ( U = 587.5,730. 0,562.5; 65.5, 64.5, 71.0, P ＜ 0.05). The protein expression of DNMT1 was correlated with the size, number,TNM stages and vascular invasion of tumors ( x2 = 4.08, 5.95, 4.08, P ＜ 0.05 ). The protein expression of DNMT3a was correlated with the size, number and TNM stages of tumors (x2 = 4.08, 5.95, 4.08, P ＜ 0.05 ).The mean tumor recurrence time of patients with low expressions of DNMT1 and DNMT3a were 9.4 and 8.7 months, which were significantly longer than 5.0 and 3.2 months of those with high expressions of DNMT1 and DNMT3a (x2 =3.89, 9.91, P＜0.05). Conclusions DNMTs play an important role in hepatocarcinogenesis.High expressions of DNMT1 and DNMT3a are correlated with the postoperative recurrence of liver cancer, which are valuable prognostic factors for liver cancer.

Objective To study imageology anatomy concerned of sellar turica and explore its potential role on growth of pituitary adenomas. Methods According to classification of sinus sphenoidalis,103 normal imageology data of sellar turica region were analyzed, including 83 cases with entire saddle type sinus sphenoidalis and 20 cases anti-saddle type sinus sphenoidalis. Furthermore, the clinical data of 45 cases of pituitary adenomas with extension into sinus sphenoidalis were retrospectively studied. Results The relationship between sellar floor's shapes and sinus sphenoidals'types was that the larger the sinus sphenoidalis was, the deeper the floor was(98.8%). The relationship between sellar floor's shapes and the superior surface of hypophysis was that most of depressed sellar floors were companied with depressed superior surfaces of hypophysises(93.8%). The anteroposterior shapes of sellar turica in midsagittal can be divided into 4 types such as bag-type, kettle-type, tube-type, and sifter-type. 45 patients suffering from pituitary adenoms with extension into sinus sphenoidalis all had entire saddle type sinus sphenoidalis. Conclusions The imageology anatomy concerned of sellar turica could explain the phenomena of pituitary adenomas with extension toward sellar floor and sinus sphenoidalis. Referring to the literatures concerned, it indicated that the imageology anatomy was the key factor of affecting the growth of pituitary adenomas.

Objective To apply a fluorescent nucleotide dye Sybr Green I in detecting telomerase activity and assess its clinical value in the diagnosis of colorectal carcinoma. Methods Telomerase activity was (measured) by telomeric repeat amplification protocol (TRAP) combined with fluorescent nucleotide dye Sybr Green I in 46 cases of colorectal carcinoma tissue specimens and 19 tumor-adjacent tissue (specimens). Results (Telomeric) repeat amplification product was displayed as clear bands in PAGE stained with Sybr Green I; the positive rate of telomoerase activity in colorectal carcinoma tissue was 89.13%, whereas no telomerase (activity) was observed in 19 tumor-adjacent tissue specimens. There was no (relationship) between telomerase (activity) and the level of cell differentiation, Dukes stages, or metastasis of lymph nodes. Conclusions The method of TRAP combined with Sybr Green I to determine telemerase (activity) is an important method for the diagnosis of colorectal carcinoma.

Objective:To express and purify a new fusion protein harboring human epidermal growth factor receptor(EGFR) binding domain and Interleukin-18(IL-18), as well as preliminary assay biological activity of recombinant proteins.Methods:Fusion protein was expressed in insect cells Spodoptera frugiperda cell (Sf9) by using Bac-to-Bac system, and an abbreviation purification procedure was used to purify fusion protein. IFN-?induction assay and EGF Receptor competitive test was used to determine fusion protein's biological activity.Results:SDS-PAGE and western blot assay showed that purified EGF-IL-18 fusion protein had high purity in 20 kD as expected and had the same antigenic specificity as human IL-18. IFN-?induction assay and EGF Receptor competitive test showed that fusion protein induced production of IFN-?in human PBMC and bound with tumor cells.Conclusion:EGF-IL-18 fusion protein has been successfully expressed and purified in insect cells and shows potential to apply in targeting therapy for tumor.