2.Development of Predictive Model for Combined Effect of Temperature and Salinity on the Growth of Vibrio parahaemolyticus
Tao LI ; Xi-Bin NING ;
Microbiology 2008;0(08):-
Based on the standard strain-Vibrio parahaemolyticus BJ1.1997, temperature (7?C~43?C) and salinity (0.5%~9.5% NaCl) which affected its growth status was studied with uniform design. The results showed that Logistic equation was optimal in primary models, the second was Gompertz equation, the last was Linear equation, so growth parameters can calculated from Logistic equation. The secondary model was developed by square root models, its r value was 0.9863, the lowest growth temperature was 9.0506?C and the highest growth salinity was 5.93% [the corresponding lowest growth water activity (Aw min) was 0.9227]. Through F test, residual analysis and evaluation by bias factor and accuracy factor, the model can exactly describe the relationship between the growth rate and combined effect of temperature and salinity (water activity).
4.Diagnostic and therapeutic value of selective angiography and interventional management in nonvariceal gastrointestinal hemorrhage
Yongqiang MA ; Ning YANG ; Mingwei XI
Basic & Clinical Medicine 2006;0(11):-
Objective To evaluate the selective angiography and interventional management in nonvariceal gastrointestinal hemorrhage.Methods 94 cases with nonvariceal gastrointestinal hemorrhage were accepted for selective angiography.According the location and cause of hemorrhage finding by angiography,these patients were checked by arterial embolization and/or perfusion of vasoconstrictor substance.Results DSA revealed positive result in 58 cases(61.7%) of 94 cases.Meanwhile,13 cases accepted 99m Tc-labeled erythrocytes nuclear scan,11 cases(84.6%) showed hemorrage.Arterial embolization was carried out in 34 cases,the hemostasis and relapse rate was 91.2% and 8.8% respectively.Besides arterial embolization,8 cases were selected vasopressin infusion,the hemostasis and relapse rate of vasopressin infusion was 75.0% and 25.0% respectively.No severe complication such as intestinal necrosis occurred among the 42 cases with interventional therapy.Conclusion Selective angiography is a valuable method for the diagnosis of the nonvariceal gastrointestinal hemorrhage of unknown reasons.The()~(99m)Tc-labeled erythrocytes nuclear scan is more sensitive than selective angiography in detecting bleeding,however,as to find bleeding location accurately,it was inferior to selective angiography.
5.Effect of low frequency electrical stimulation on human nerve excitability
Hao NING ; Xuemin WANG ; Xi ZHANG
Chinese Medical Equipment Journal 2004;0(07):-
Electrical stimulation is well used in medical therapeutics,but the mechanism still needs to be studied further. This paper applies an electrical stimulator to generate low frequency pulse,which is used to stimulate at the root of the thumb,right on the median nerve. EEGs were recorded before and after the stimulation. Comparing the EEGs changes between the former and latter using power spectral analysis,the effect of low frequency electrical stimulation on human nerve excitability is discussed.
6.Characteristics of Writing and Related Focuses in Brain in Patients with Uighur and Chinese Agraphia
Yanling XI ; Nu BA ; Ning ZHANG ;
Chinese Journal of Rehabilitation Theory and Practice 2013;19(12):1147-1151
Objective To study the writing characteristics and related focuses in brain in patients with Uighur and Chinese agraphia.Methods Aphasia Battery of Chinese (ABC) and Uighur ABC were used to examine the characteristics of speaking and writing. The focues were observed with CT and MRI. Results 67 patients were with agraphia, in which 37 were Uigur and 30 were ethnic Han. Both groups mostly showed aphasic agraphia, the focuses were found in various areas in the brain, and mostly located on the left frontal, parietal, temporal lobes and basal ganglion. Conclusion The characteristics of writing were various with the types of agraphia, but similar between Uighur and Chinese cases with same writing characteristics.Writing behavior relies on the cooperation of the whole neuromechanism.
7.Analgesia of COX-2 inhibitor after total knee arthroplasty
Xianlun PANG ; Wei HUANG ; Xi LIANG ; Ning HU
Chinese Journal of Trauma 2011;27(3):224-227
Objective To observe the analgesic effect of COX-2 inhibitors combined with PCA in treatment of the pain after total knee arthroplasty(TKA)and explore novai method for pain control after TKA. Methods This study was,a double blind,controlled,randomized,placebo-controlled,parallelgroup and single center study and obtained the consent of the Medical Ethics Committee of Chongqing Medical University.Inclusion criteria:the patients with severe trauma or degenerative knee,at age of 58-75 vears.ASA Ⅰ or Ⅱ, tolerance of the intravenous anesthesia.The same solvent formula of PCA was routinely prepared based on body weight after TKA.Intravenous injection of 40 mg Parecoxib plus 2 ml normal saline or injection of only 2 ml normal saline was done when closing the incision.which was recorded and prescribed by the researcher A.The same reagent waft,used continually every other 12 hours till48 hours.Celecoxib or placebo capsules was not usod orally at 72 hours until two weeks later.The knee ioint function was observed preoperatively and at days 3,7 and 15 after TKA. Results The study was completed in 60 patients including 30 patients in the group treated with Parecoxib and Celecoxib sequential therapy and 30 patients in placebo-control group.There was no statistical difference in aspects of general condition in both groups(P>0.05).There was no statistical difference in aspect of preoperative knee score between two groups(P>0.05).The analysis showed statistical difference in the knee function score at days 3.7 and 15 after operation(P<0.05 or0.01).Conclusions The COX2 inhibitors combined with PCA has definite analgesic effect on the pain after TKA,which positively correlates with early modified HSS evaluation of TKA.
8.Teaching Discussion on Experimental Pathogenic Bacteria-detection Training for Food Quality and Safety Undergraduate Students
Xi-Bin NING ; Dai-Xin LIU ; Ya-Qiong ZHANG ;
Microbiology 2008;0(08):-
Teaching principles and class content were stated for a experimental course of common pathogenic bacteria detection methods for the undergraduate student in food quality and safety major. They include course material preview, advanced teaching methods, combination of teaching and research, graduate teaching assistant, experimental reports writing and experimental skills evaluation. All these means lead to a good teaching outcome.
9.Correlation of KRAS and PIK3CA gene status between primary tumors and paired metastases in colorectal cancer
Dandan HAN ; Yanfeng XI ; Wenqi BAI ; Ning GAO ; Lili WANG
Chinese Journal of Clinical and Experimental Pathology 2017;33(4):369-374
Purpose To investigate the mutation status of KRAS and PIK3CA gene in colorectal cancer (CRC) primary lesions and corresponding liver metastasis and its clinical significance.Methods The gene mutations of KRAS and PIK3CA were detected in 58 cases of primary lesions of CRC and corresponding liver metastasis tissue by real-time PCR.Results The mutation rates of KRAS were 31.03% (18/58) and 25.86% (15/58) in primary lesions of CRC and corresponding liver metastasis tissue,respectively,in which G12D was most commonly detected.The mutation rates of PIK3CA were 8.62% (5/58) and 10.34% (6/58) respectively,in which the most common mutation site was E545K.Only one case carried simultaneously both mutations of KRAS (G12D) and PIK3CA (E545K).The mutation of KRAS and PIK3CA had a good consistency between primary lesions and liver metastasis.Univariate analysis showed that the mutation of KRAS was related to the primary lesion of tumor location,the quantity of metastasis and the types of tumor (P < O.05),PIK3 CA mutation was associated with the synchronous/metachronous liver metastasis and the quantity of metastasis (P < 0.05).Multivariate Cox regression analysis showed that synchronous/metachronous liver metastasis and the mutation of KRAS were influencing factors for prognosis of CRC.The overall survival of patients with CRC who had simultaneous liver metastases was longer than those with heterotopic liver metastases;the overall survival of KRAS wild-type mutant patients was longer than those of mutant patients (P < 0.05).Conclusion The G12D site of KRAS gene has the highest mutation frequency in CRC,KRAS/PIK3CA mutation has a good consistency of the primary lesions of CRC and corresponding liver metastasis.Primary lesions can be as the source of molecular detection.To achieve individualized treatment,we need to reassess the genetic status of metastasis based on the choice of targeted therapy for precision medicine.
10.Operation Practice of Outpatient Prescriptions Audit before Payment in Our Hospital
Xin WANG ; Jian XU ; Xi DING ; Hua NING
China Pharmacy 2016;(4):461-463
OBJECTIVE:To provide reference for prescriptions audit before payment in hospital pharmacy. METHODS:The management measures of prescriptions audit and intervention before payment in our hospital were introduced. 1 200 outpatient pre-scriptions within 1 year before and after management were subjected to a statistical analysis. The effects of prescriptions audit be-fore payment were evaluated through analyzing and comparing qualification rate of prescription and unqualified prescriptions. RE-SULTS:Our hospital adopted a series of measure to realize prescriptions audit and intervention before payment by clinical pharma-cists,such as using information audit system,formulating audit standard,educating pharmacists,establishing audit job system, prescriptions review and feedback system,setting up communication system,etc. Of the total audited 189 665 prescriptions, 14 581(7.69%)failed to audit and 606 prescriptions hadn’t been revised after 1 year management,with effective intervention rate of 95.84%. Compared with before management,the prescription qualification rate increased from 88.83% to 98.67% after manage-ment(P<0.01). The quantity of overdose,inconformity with medical insurance,overload and other conditions reduced to 0. CON-CLUSIONS:It is feasible for pharmacists to audit and intervent prescriptions before payment in hospital pharmacy to improve pre-scription qualification and promote rational drug use in the clinic.