OBJECTIVE:To establish a method of determination of midecamycin A1 in midecamycin tablets METHODS:This method used C18 column as stationary phase,0 1mol/L ammonium formate solution-acetonitrile(80∶55) as mobile phase and 232nm as detection wavelength RESULTS:There was a good linear correlation in the range of 0 5～8mg/ml,r=0 9 995,S=5 989C-24 65,RSD=1 4%(n=5) The mean recovery was 99 35% and RSD=1 2%(n=6) CONCLUSION:The method is simple and easy to do and may be adopted for quality control of this drug

OBJECTIVE To investigate the risk factors of fungal ventilator associated pneumonia(FVAP) and the characteristic of pathogenic fungi.METHODS Thirty seven VAP patients were divided into FVAP group and nonfungal ventilator associated pneumonia(NFVAP) group.Risk factors were compared between the two groups and the characteristic of pathogenic fungi was analyzed.RESULTS Compared to the NFVAP group,the FVAP group showed a significant higher rate in systemic usage of glucocorticosteriod and combined application of antibiotics.The cases of FVAP appeared frequently over the period since 7th to 14th days after intubation.Twelve strains of fungi were isolated from the sputum of patients in FVAP group.Ten strains(83.3%) of the isolates belonged to Candida species included(C.albicans 6 strains(50.0%),C.tropicalis 2 strains(16.7%),C.krusei 1 strain(8.3%),and C.parapsilosis 1 strain(8.3%),and 2 strains(16.7%) of the isolates belonged to Aspergillus.CONCLUSIONS The rate of tracheal intubation should be decreased and the time of mechanical ventilation should be shortened to avoid FVAP.Identifying the strains of fungi and their sensitivity are useful to direct the treatment.

Objective To investigate the clinical significance of NKp44+NK cells in the peripheral blood and synovial fluid of rheumatoid arthritis (RA) patients.Methods The proportions of NKp44+NK cells in the PB of 20 active and 15 remission patients with RA and 20 healthy individuals were detected using flow cytometry.The proportions of NKp44+NK cells in the SF of 10 active patients were detected.Multiple nonparametric test was used to compared the difference of NKp44+NK cells proportions.Clinical data including DAS28,anti-CCP antibody and RF were collected.The relationship between NKp44+NK cells and clinical data was analyzed by Spearman correlation analysis.Results The proportions of NKp44+NK cells in PB of active and remission patients and healthy individuals were (1.480±4.750)%,(0.540±0.590)%,(0.000±0.000)%respectively.The proportion of NKp44+NK cells in PB of active patients was significantly higher than that of remission patients and healthy individuals (x2=46.708,P=0.000).The proportion of NKp44+NK cells in the SF of ten active RA patients was significantly higher than matched PB.There was positive correlation between NKp44+NK cells proportion in PB and SF of active patients and DAS 28 and anti-CCP antibody level.There was no correlation between NKp44+NK cells proportion in PB,SF and RF.Conclusion There is a marked increase in the proportion of NKp44+NK cells in PB and SF of RA patients.Moreover,NKp44+NK cells are positively correlated with DAS28 and anti-CCP antibody,suggesting that NKp44+NK cells may be correlated with disease activity and severity.

Objective To evaluate and compare the results of different operative methods for different types of femoral neck fracture. Methods To assess the treatment effect of two methods. Some eases of femoral neck fracture of basal-neck type and via-neck type were treated with closed reduction internal fixation with two compression spiral screws(14 eases). Other eases(32 eases) of femoral neck fracture of sub-head type and head-neck type were treated with closed reduction internal fixation with two cannulated compression screws and bone graft flaped with quadrate muscle of thigh. Results 41 cases were followed up. The average healing time was 3 years and 10 months.The bone healing rate was 97.5% ,femoral head necrosis occurred in 2.4% ,excellent and good rate was 92.6%.Conclusion Cases of femoral neck fracture of sub-head type and head-neck type were treated with closed reduction internal fixation with two cannulated compression screws and bone graft flaped with quadrate muscle of thigh. This method has the advantage of reliable fixation, simple operation, less injury and little hemorrhage. It can improve the rate of fracture union and reduce the rate of avascular necrosis of femoral head. It is the optimal method for the treatment of femoral neck fractures.

Objective To explore the relationship between the MRI enhancement ratios of liver parenchyma in hepatobiliary phase with gadobenate dimeglumine (Gd-BOPTA)and liver function.Methods Fifty-nine patients who underwent Gd-BOPTA-enhanced MRI were retrospectively enrolled in the study.The enhancement ratio of signal to noise ratio and enhancement ratio of the contrast ratio were calculated.The relationships between the enhancement ratio and CTP grading and MELD score were analyzed.Results The signal enhancement ratios in hepatobiliary phase in patients with CTP A classification were higher than those with CTP B classi-fication (P <0.01).Meanwhile,the ratios in patients with MELD scores less than 10 points were higher than those with MELD scores more than 10 points (P <0.01).Conclusion The MR enhancement degree of liver parenchyma in the hepatobiliary phase with Gd-BOPTA may reflect the liver function.

Objective To observe the clinical efficacy of Tanreqing Injection combined with levofloxacin injection in treatment of acute episode of chronic bronchitis and its effect on bacterial clearance rate. Methods Totally 66 patients were randomly divided into treatment group and control group (33 cases for each). Both groups were given expectorant and antispasmodic treatment. The treatment group was given Tanreqing Injection combined with levofloxacin injection, while the control group was given levofloxacin injection only. The treatment course was 12 days. The clinical symptoms, signs, and sputum culture before and after treatment were observed. The clinical efficacy and the bacterial clearance rate of the two groups were compared. Results The markedly effective cases and the effective cases in the treatment group were 15 and 29 respectively, and those in the control group were 7 and 21 respectively, with statistical significance (P<0.05). The bacterial clearance rate was 89.5% (17/19) in the treatment group, while 55.6%(10/18) in the control group, with significant difference (P<0.05). Conclusion Acute episode of chronic bronchitis treated by Tanreqing Injection combined with levofloxacin injectcion is more effective than levofloxacin injection only.

Objective To compare the perioperative outcomes and short-term efficacy of three-port extraperitoneal laparoscopic radical prostatectomy (ELRP) and four-port ELRP.Methods Two hundred patients who had undergone ELRP for prostate cancer by a single surgeon from November 2010 to October 2014 were retrospectively analyzed.Among them,95 cases underwent three-port ELRP and 105 cases underwent four-port ELRP.On the basis of traditional four-port ELRP,three-port ELRP was characterized by the omission of the trocar on the inner side of right anterior superior iliac spine.The mean age was 66.8 ± 15.5 years,and mean total prostate specific antigen (tPSA) was 15.3 ± 12.4 μg/L.There were no significant differences including age,body mass index,tPSA,clinical stages,acceptance of neoadjuvant hormone therapy,history of transurethral resection of the prostate,history of diabetes mellitus between the 2 groups (P ＞ 0.05).Patients in three-port ELRP group had significantly smaller prostate volume than fourport group (35.6 ± 16.7 ml versus 42.2 ± 24.7 ml,P ＜ 0.05).The clinical factors as operative time,estimated blood loss,hospital stay,drainage tube keeping days,pathological Gleason scores,pathological stages,positive surgical margin rates,biochemical recurrence rates and urinary incontinence rates were compared between the 2 groups.Results The three-port group had significantly shorter operative time than the four-port group (81.0 ± 18.6 min versus 103.6 ±34.6 min),less estimated blood loss (102.6 ±75.8 ml versus 217.5 ± 182.9 ml),less positive surgical margin rates (13.7％ versus 27.6％).There were 9 patients having Gleason scores more than 7 in the three-port ELRP group and 29 patients in four-port ELRP group (P ＜ 0.05).There were no significant differences of hospital stay,drainage tube keeping days,pathological stages between the 2 groups (P ＞ 0.05).Eighty-three cases in the three-port ELRP group (87.4％) were followed up for 5-19 months with the median time of 11 months.Ninety-two cases in fourport ELRP group (87.6％) were followed up for 17-52 months and the median time was 27 months.There were no significant differences of biochemical recurrence rates and urinary incontinence rates between the 2 groups(P ＞ 0.05).Conclusions Compared to four-port ELRP,three-port ELRP can provide shorter operative time,less blood loss,better negative surgical margin rates,similar oncological control and recovery of postoperative continence.In experienced hands,three-port ELRP could be a feasible and effective option for localized prostate cancer.

Objective To evaluate the learning curve of three-port extraperitoneal laparoscopic radical prostatectomy(ELRP) and to minimize operative time and blood loss about this procedure.Methods From August 2013 to October 2014,the data from 95 consecutive patients,who had undergone three-port ELRP for prostate cancer,were retrospectively analyzed.The mean age was 65.9 ± 7.7 years,mean total PSA level was 15.4 ± 12.7 μg/L,and mean body mass index(BMI) was 24.8 ± 3.2 kg/m2.According to the number of procedures performed by the surgeon,all patients were classified into three chronologic groups,including group A (No.1-32),group B (No.33-64) and group C (No.65-95).There were no significant differences including age,BMI,tPSA,estimated prostate volume,clinical stages,history of neoadjuvant endocrine therapy,history of transurethral resection of the prostate (TURP) among group A,B and C (P ＞ 0.05).The operative outcomes analyzed were operative time,estimated blood loss,hospital stay,drainage tube indwelling days,pathological Gleason scores,pathological stages,positive surgical margin rates,biochemical recurrence rates and urinary incontinence rates.Among these 95 patients,the results of the first 32 cases were compared with those of the remaining 63 cases,the first 64 with the remaining 31.Results The average operative time in 95 patients was 81.0 ± 18.6 min.The sloping learning curve for this surgeon showed that the operative time for all 95 cases was strongly correlated with additional experience (| rs | =0.612,P＜0.01).Operative time,however,was not strongly correlated with the surgeon's experience in each group of A,B and C(P ＞0.05).Group A had longer operative time than that of Group B plus C(96.4 ± 11.3 min vs 73.2 ± 16.7 min,P ＜0.01).Group A plus B had longer operative time than that of group C (87.6 ± 17.2 min vs 67.5 ± 13.8 min,P ＜ 0.01).For all cases,the estimated blood loss was strongly correlated with additional experience (| rs | =0.677,P ＜ 0.01).Estimated blood loss was strongly correlated with the accumulation of experience for the initial 32 cases(| rs | =0.619,P ＜ 0.01).However,no strong correlation was observed over the next 63 cases.Group A had more blood loss than that of Group B plus C (158.7 ± 81.3 ml vs 74.1 ± 54.4 ml,P ＜ 0.01).Group A plus B had more blood loss than that of group C (125.5 ± 71.6 ml vs 55.3 ± 61.6 ml,P ＜ 0.01).But hospital stay,drainage tube keeping days were not strongly correlated with additional experience in each group(P ＞ 0.05).There were no significant correlation between the accumulation of experience and positive surgical margin rates,biochemical recurrence rates and urinary incontinence rates.Conclusion Our experience of three-port ELRP cases appears to be favorable with decreasing tendency in operative time,estimated blood loss with experience accumulation.Exposure to 32 surgeries,operative time and estimated blood loss reduced significantly,and after 64 cases operative time and estimated blood loss further reduced.

Objective To investigate the changes of hypothalamic-pituitary-adrenal axis (HPA)function, volume of the hypothalamic, pituitary and adrenal glands in elderly patients with depression. Methods Twenty-five cases of elderly patients with depression and 19 healthy elderly patients were enrolled into the patient group and the healthy control group, respectively. Enzyme linked immunosorbent assay was used to measure the level of the main hormone related with HPA axis in blood. The low dose dexamethasone suppression test was used to assessassessment the negative feedback regulation of HPA axis. The volume of the hypothalamus, pituitary and adrenal glands were determined by the magnetic resonance imaging. Results The Beck Depression Scale (BDI-II) and Montgomerie Rating Scale (MADRs) score of the elderly depression patients were significantly higher than those in the healthy control group (P < 0.01). The values of main hormone related with HPA axis in the patient group, such as CRH, ACTH and CORT, were higher than those in the healthy control group (P<0.01). The non- suppression rate of low dose dexamethasone suppression test in the patient group was significantly higher than that in the healthy control group (P < 0.05). The hypothalamus, pituitary and adrenal gland volume of patients group were 4.7%, 18.3% and 17.5% ,respectively. Significant the differences of pituitary and adrenal volume were observed between two groups (P < 0.05). Conclusion The levels of main hormone related with HPA axis in the elderly patients with depression were significantly increased, the non-suppression rate of low dose dexamethasone suppression test was also increased. Meanwhile, the volume of pituitary and adrenal gland in the elderly patients with depression increased.

Objective To investigate the effects of Bu Yang Huan Wu Tang on serum contents of microelements sunch as Zn,Cu,Fe,Se and Mn in spontaneously hypertensive rats-stroke prone(SHR/SP). Methods Twenty male SHR/SP of 8 weeks old were divided into two groups: treatment group(n=10),treatmemt with Bu Yang Huan Wu Tang;control group,taking normal feed.Ten WKY rats were served as blank group. The experiment lasted for three months,and the monitored parameters were serum contents of microelements such as Zn,Cu,Fe,Se and Mn. Results It was revealed that the serum contents of Zn,Mn and Se of the blank group were significantly higher than those of the treatment group(P0.05). Conclusion Bu Yang Huan Wu Tang may have regulatory effects on the serum contents of microelements such as Zn,Cu,Fe,Se and Mn in SHR/SP.