A strain of P. Aeruginosa,which was seperated from clinical environment ,shows a special characteristic . It keeps normal short rod shape when cultured at 37℃,however,it forms filament without pyocyanin producing when cultured at 25℃ overnight. The filaments will divide and form short rods,simultaneously,produce pyocyanin when culture time is prolonged to over 72h or culture temperature is raised to 37℃. The preliminary study indicates that this phenomenin has nothing to do with nutritive conditions and could the inbluenced by inoculating density and irradiating with ultraviolet rays The absence of pyocyanin was not the cause of filamentous formation by the test results.

Objective To comprehend the status of Helicobacter pylori (Hp) infection in type 2 diabetes mellitus (T2DM) patients, and study the relationship between Hp and T2DM. Methods Seven hundred and sixty-eight in-hospital T2DM patients (T2DM group, including new diagnosed 194 patients and re-diagnosed 574 patients) and 172 sex, age matched health individuals(control group ) were involved in this study. 14C-urea breath test (14C-UBT) was proceeded in both groups to determine Hp infection, and infection rates were calculated. Results Total Hp infection rate in T2DM group was significantly higher than that in control group [56.0%(430/768) vs 37.8%(65/172) ,P< 0.01], delamination analysis according to sex also showed significant differences between T2DM group and control group(P < 0.01). The rate of Hp infection in new diagnosed patients and re-diagnosed patients, female patients and male patients had no significant difference (P > 0.05 ). The rate of Hp infection in different age and sex had no significant difference (P >0.05 ). Conclusions The rate of Hp infection in T2DM patients is higher than that in non-T2DM patients.Hp infection has relationship with T2DM, and has no relationship with age, sex and course of disease.

Aim: To study the pharmacokinetic effects of salvianolic acid B( Sal B) on danshensu( DSS) in Danshen injection in rats. MGthod: Following the intravenous administration of Danshen injection and Danshen injection added with Sal B to rats, the plasma kinetic study, tissue distribution and urine excretion were studied. The plasma kinetic study was also investigated by giving DSS and DSS in combination with Sal B to rats. Plasma, tissue and urine drug levels of danshensu were analyzed by LC-MS. Results: Compared with danshensu given alone, no significant difference of the pharmacokinetic behavior of danshensu was found when danshensu was given in combination with salvianolic acid B. However, compared with Danshen injection given alone, the pharmacokinetic behavior of danshensu changed remarkably when Danshen injection was given in combination with salvianolic acid B which might be caused by the decrease of DSS in kidney distribution and urine excretion. Conclusion: The pharmacokinetic effects of salvianolic acid B on danshensu depend on the existence of multiple components in Danshen injection. Results suggest that the pharmacokinetic interactions of the multiple components are closely related to the integrity of herbal medicines.

Object To explore the antitumor mechanism of Stellera chamaejasme Linn.(SC).Methods SC containing-serum(SCCS)was derived from mice pretreated with different doses of SC.Cultured human leukemia HL-60 and human gastric adenocarcinoma SGC-7901 cells were used.Inhibition of proliferation was measured using MTT assay.Morphological assessment of apoptosis was performed with fluorescence microscope.DNA fragmentation was assessed by agarose gel electrophoresis and flow cytometry.Expression of bcl-2 protein was measured with immunohistochemistry.Results Exposure of exponentially growing HL-60 cells to mice serum containing 10% SC(pretreated with SC3,6, and 12 g/kg)for 48h resulted in growth inhibition in a dose-dependent manner.Typical morphological changes of apoptosis and DNA fragmentation in HL-60 cells were induced."Apobodies'in the apoptotic cells were observed,'ladder"pattern of agarose gel electrophoresis of DNA from 11.7% to 57.4%.Treatment with SC containing serum decreased the percentage of SGC-7901 cell of bcl-2 protein positive expression from 78.3% to 32.9%.Conclusion SC could induce apoptosis of HL-60 cells and decrease the expression of bcl-2 protein of gastric adenocarcinoma SGC-7901 cells.

Object To explore the antitumor mechanism of Stellera chamaejasme Linn. (SC). Methods SC containing-serum (SCCS) was derived from mice pretreated with different doses of SC. Cultured human leukemia HL-60 and human gastric adenocarcinoma SGC-7901 cells were used. Inhibition of proliferation was measured using MTT assay. Morphological assessment of apoptosis was performed with fluorescence microscope. DNA fragmentation was assessed by agarose gel electrophoresis and flow cytometry. Expression of bcl-2 protein was measured with immunohistochemistry. Results Exposure of exponentially growing HL-60 cells to mice serum containing 10% SC (pretreated with SC 3, 6, and 12 g/kg) for 48 h resulted in growth inhibition in a dose-dependent manner. Typical morphological changes of apoptosis and DNA fragmentation in HL-60 cells were induced. "Apobodies" in the apoptotic cells were observed, "ladder" pattern of agarose gel electrophoresis of DNA from these cells was revealed, and the percentage of apoptotic cells with fractional DNA content increased from 11.7% to 57.4%. Treatment with SC containing serum decreased the percentage of SGC-7901 cells of bcl-2 protein positive expression from 78.3% to 32.9%. Conclusion SC could induce apoptosis of HL-60 cells and decrease the expression of bcl-2 protein of gastric adenocarcinoma SGC-7901 cells.

Objective To observe the expression of 7 cytokeratins in skin epithelial tumors and to assess their diagnostic value. Methods The expression of 7 cytokeratins, including cytokeratin 7(K72.2), cytokeratin 8(C-51), cytokeratin 10(DE-K10), cytokeratin 14(LL002), cytokeratin 17(E3), cytokeratin 18(DC10)and cytokeratin 19(KS19.1), was assessed by immunohistochemical staining (S-P method) in 54 cases of different skin epithelial tumors and 20 normal skin specimens. Results Of 54 cases studied, 10 were squmous cell carcinoma (SCC), 10 basal cell carcinoma (BCC), 19 hair follicle tumor, 2 sebaceous carcinoma, and 13 sweat gland tumor. The expression patterns and distribution of the 7 cytokeratins were different in different skin epithelial tumors. Most of the tumor cells stained diffusely for cytokeratins in SCC, BCC and hair follicle tumor; different cytokeratins expressed in different parts of each of the subtypes of sweat gland tumors. Conclusions Analysis of a selected group of cytokeratins may be helpful in the diagnosis and differential diagnosis of SCC, basal cell carcinoma and skin adenexal tumor.

Alc in trial group were significant better than those in control group ( P < 0. 05 ). The results indicate that type 2 diabetic patients with Hp infection should receive moxifloxacin-based triple therapy as first-line treatment.

BACKGROUNDTo evaluate three new chemotherapeutic regimens for non-small cell lung cancer (NSCLC) by pharmacoeconomic analysis in guiding rational use of drugs.

METHODSOne hundred and one cases of NSCLC in clinic stage III or IV were treated by one of the three chemotherapeutic schemes-PC: paclitaxel (135mg/m²,d1)+DDP; TC: docetetaxel (75mg/m²,d1)+DDP; VC: vinorelbine (25mg/m²,d1 and d8)+DDP, DDP were given at 80mg/m² in 3 groups. Pharmacoeconomic cost-effectiveness analysis was used to compare the efficacy of the three regimens.

RESULTSThe response rate was 46.9%, 48.6% and 47.1% and median survival duration was 7.8, 7.5 and 7.6 months for PC, TC and VC regimen respectively, with 1-year survival rate of 37.5%, 37.1% and 38.2% respectively. There was remarkable difference in the response rate and median survival duration between PC and TC, but no statistical difference was observed between PC and VC. There was no statistical difference in 1-year survival rate among the three regimens. The average cost of one patient for one therapeutic cycle was RMB 15840.5, 15831.1 and 9401.8 Yuan respectively. Escalation of 1% of response rate costed RMB 337.75, 325.74 and 199.61 Yuan respectively. Prolongation of 1 month of median survival duration costed RMB 2030.83, 2110.97 and 1237.08 Yuan respectively. Escalation of 1% of one year survival rate costed RMB 422.41 , 426.71 and 246.12 Yuan respectively.

CONCLUSIONSAmong these three new chemotherapeutic regimens for the advanced patients with NSCLC, the expenditure of VC is much cheaper than PC and TC. The cost effectiveness of VC is the lowest among the three regimens.

Objective:To analyze the cardiac dosimetry of lymph node irradiation in the internal breast region after left-sided breast cancer surgery and to assess its impact on patients' quality of life.Methods:The clinical data of 108 patients who underwent inverse intensity modulated radiotherapy (IMRT) after left-sided breast cancer surgery in Cancer Hospital of Nantong University from May 2019 to May 2021 were collected and retrospectively analyzed, and divided into a study group (with internal breast, 55 cases) and a control group (without internal breast, 53 cases) according to whether the postoperative radiotherapy included lymph node irradiation in the internal breast region. The dosimetric indexes of planned target area (PTV) , cardiac tolerance, serum myocardial injury markers and quality of life before and after radiotherapy were compared between the two groups.Results:In terms of PTV dosimetry, the conformality index (CI) of the study group and the control group were 0.73±0.07 and 0.75±0.08, the homogeneity index (HI) were 0.17±0.03 and 0.17±0.02, the D max were (55.69±1.02) Gy and (55.46±1.13) Gy, the D mean were (50.54±0.23) Gy and (50.48±0.21) Gy respectively, there were no statistically significant differences ( t=1.38, P=0.169; t<0.01, P>0.999; t=1.11, P=0.269; t=1.41, P=0.160) . In terms of cardiac receptivity, the D mean of the two groups were (5.93 ± 0.32) Gy, (5.64 ± 0.30) Gy, V 40 were (0.47 ± 0.10) %, (0.41 ± 0.11) %, and V 30 were (2.48 ± 0.51) %, (2.06 ± 0.49) % respectively, and there were statistically significant differences ( t=4.86, P<0.001; t=2.97, P=0.004; t=4.36, P<0.001) . The levels of serum troponin Ⅰ (cTnⅠ) before radiotherapy in the study group and the control group were (0.09±0.02) ng/ml and (0.09±0.01) ng/ml, creatine kinase isoenzyme MB (CK-MB) were (0.27±0.08) U/L and (0.25±0.08) U/L, myoglobin (MYo) were (3.84±1.02) μg/L and (3.69±0.97) μg/L, and brain natriuretic peptide (BNP) were (172.35±16.24) pg/ml and (169.81±15.93) pg/ml respectively, there were no statistically significant differences ( t<0.01, P>0.999; t=1.30, P=0.197; t=0.78, P=0.436; t=0.82, P=0.414) . One month after radiotherapy, the levels of serum cTnⅠ in the two groups were (0.09±0.03) ng/ml and (0.09±0.02) ng/ml, CK-MB were (0.29±0.09) U/L and (0.28±0.08) U/L, MYo were (4.06±1.08) μg/L and (4.01±1.03) μg/L, and BNP were (175.13±17.09) pg/ml, (172.47±16.28) pg/ml respectively, there were no statistically significant differences ( t<0.01, P>0.999; t=0.61, P=0.544; t=0.25, P=0.806; t=0.83, P=0.410) . The European Organization for Research and Treatment of Cancer Quality of Life Questionnaire Core 30 (EORTC QLQ-C30) scores before radiotherapy in the study and the control groups were (60.24±5.13) points and (61.19±5.46) points, (74.12±7.20) points and (75.35±7.88) points at 1 month after radiotherapy, (77.53±7.14) points and (78.95±7.08) points at 6 months after radiotherapy, and (75.02±6.93) points and (76.68±6.74) points at 1 year after radiotherapy respectively, there were no statistically significant differences ( t=0.93, P=0.353; t=0.85, P=0.399; t=1.04, P=0.302; t=1.26, P=0.210) . The EORTC QLQ-C30 scores at 1 month, 6 months, and 1 year after radiotherapy were higher than those before radiotherapy in the two groups, and there were statistically significant differences (all P<0.001) . Conclusion:IMRT containing lymph node irradiation in the internal breast region after left breast cancer surgery brings a certain degree of increased cardiac dose, but it is feasible to control it within a certain range and does not affect the patients' cardiac function or quality of life in the short term.

In this study, we aimed to construct a non-replication mRNA platform and explore the side effects of electroporation-mediated delivery of mRNA on the mice as well as the expression features of the mRNA. With luciferase gene as a marker, in vitro transcription with T7 RNA polymerase was carried out for the synthesis of luciferase-expressed mRNA, followed by enzymatic capping and tailing. The mRNA was delivered in vivo by electroporation via an in vivo gene delivery system, and the expression intensity and duration of luciferase in mice were observed via an in vivo imaging system. The results demonstrated that the mRNA transcripts were successfully expressed both in vitro and in vivo. The electroporation-mediated delivery of mRNA had no obvious side effects on the mice. Luciferase was expressed successfully in all the mRNA-transduced mice, while the expression intensity and duration varied among individuals. Overall, the expression level peaked on the first day after electroporation and rapidly declined on the fourth day. This study is of great importance for the construction of non-replication mRNAs and their application in vaccine or antitumor drug development.
Animals ; Electroporation/methods* ; Gene Transfer Techniques ; Luciferases/metabolism* ; Mice ; RNA, Messenger/genetics*