1.25S rDNA genotype and antifungal susceptibility of vaginal Candida albicans
Chinese Journal of Obstetrics and Gynecology 2016;51(4):279-284
Objective To investigate 25S rDNA genotype distribution of vaginal Candida albicans and its relationship with antifungal susceptibility. Methods A total of 954 isolates of Candida albicans were subjected to genotype analysis according to the presence and the size of transposable groupⅠintron in 25S rDNA with PCR; 156 isolates were enrolled to detect their antifungal susceptibility of 5 antifungal agents with the M27-A3 broth microdilution method. Results Totally 876 isolates were determined to be intronless genotype A (91.8%,876/954); 58 (6.1%, 58/954) and 20 isolates (2.1%, 20/954) were intron-containing genotype B and genotype C, respectively. The minimal inhibitory concentrations (MIC) of itraconazole and fluconazole against the intron-containing group were significantly higher than those of the intronless group (0.25 versus 0.125μg/ml, P<0.05;0.25 versus 0.125μg/ml, P<0.01), whereas the MIC of nystatin against the intron-containing group was lower than that of the intronless group (4 versus 8μg/ml, P<0.01). The resistance rate of Candida albicans to itraconazole of the intron-containing group was significantly higher than that of the intronless group [24% (19/78) versus 3% (2/78), P<0.01]. Cross-resistance analysis revealed 5 of the 21 (24%) itraconazole resistant isolates were cross-resistant to fluconazole ,and 5 of the 6 (5/6) fluconazole-resistant strains were cross-resistant to itraconazole. Besides, all the five strains simultaneously resistant to itraconazole and fluconazole belonged to the intron-containing group. Conclusion The presence of the transposable group Ⅰ intron in 25S rDNA of vaginal Candida albicans might be important in affecting itraconazole, fluconazole and nystatin susceptibility.
2.Apoptosis induced by cold ischemia and reperfusion after pancreas transplantation in rats
Xi LI ; Zhaohui ZHANG ;
Chinese Journal of General Surgery 2000;0(11):-
Objective To investigate apoptosis in acinar cells during posttransplant reperfusion, and the expression of Bcl 2, Bax, Fas Methods Pancreas transplantation was performed between male SD rats after 2 hours of cold ischemia Rats ( n =65) were divided at random into 7 groups: sham group, cold ischemia group (as controls), reperfused 1 h, 3 h, 6 h, 9 h, 12 h group The pathologic pancreatic tissue was observed by electron microscope; Apoptotic cells were stained by TUNEL technique; Expression of Bax、Bcl 2 and Fas protein in pancreatic tissue were detected by SABC immunohistochemical method Results Apoptotic cells were observed in early phase after pancreas transplantation The peak of apoptotic pancreas cells occurred 3 hours after reperfusion [AI ( 9 5? 2 9)%, P
3.The Effect of Lysophosphatidic Acid on the Permeability of Blood-Brain Barrier
International Journal of Cerebrovascular Diseases 2006;0(04):-
Lysophosphatidic acid is a intermediary metabolite in lipid metabolism, mainly produced from activated platelets. It may cause the apoptosis of hippocampal neurons, abnormal phosphorylation of tau protein and increased permeability of the tight junction of endothelial cells, which is closely correlated with pathological changes of ischemic cerebrovascular diseases, Alzheimer's disease and vascular dementia. It is shown that lysophosphatidic acid may induce the opening of the blood-brain barrier under pathological conditions, and enters central nervous system through the blood-brain barrier, and causes different effects of pathological changes by acting on various cells.
4.Surgical procedures for the development of pancreaticoduodenal transplantation in rat
Journal of Medical Postgraduates 2003;0(09):-
Objective:To establish the model of pancreaticoduodenal transplantation in rats. Methods:The enteric drained whole pancreas duodenal transplantation model was investisated. The donor aortic segment including the celiac, superior mesenteric divergence were anastomosed with recipient abdominal aorta with end to side. The donor portal was cuff-anastomosed with left renal vein. The graft duodenum were anastomosed with the host jejunum with end to side. Results:Eighty-nine operations were performed and 51 rats were successful, of which all graft of successful case had endocrinium function. Conclusion:This model for pancreas transplantation is reliable.
5.Forecast on Shelf Life of Lonicerae japonicae Based on Its Chemical Components Variation
China Pharmacy 2017;28(12):1677-1680
OBJECTIVE:To establish a method for determining the contents of chlorogenic acid and luteoloside in Lonicerae ja-ponicae,and to explore the shelf life of L. japonicae under ordinary temperature and sealed environment. METHODS:HPLC meth-od was adopted. The determination was performed on Agilent Zorbax SB-C18(chlorogenic acid)column and Agilent Zorbax SB-Phe-nyl(galuteolin)with mobile phase consisted of acetonitrile-0.4% phosphoric acid(13:87,V/V),acetonitrile-0.5% glacial acetic ac-id (gradient elution,galuteolin) at the flow rate of 1.0 mL/min. The detection wavelength was set at 327 nm (chlorogenic acid) and 350 nm(galuteolin). The column temperature was 30 ℃,and sample size was 10 μL. RESULTS:The linear range of chloro-genic acid and galuteolin were 10-100 μg/mL(r=0.9986),5-50 μg/mL(r=0.9993),respectively. RSDs of precision,stability and reproducibility tests were all lower than 4.0%. Recoveries were 95.78%-99.70%(RSD=1.46%,n=6)、96.30%-104.31%(RSD=2.93%,n=6). The contents of chlorogenic acid and galuteolin in roller method,baking method and natural drying method of processed L. japonicae were all decreased by 30%-40% after stored for 12 months. CONCLUSIONS:The method is simple, precise,stable and repeatable,and can be used for simultanoue determination of chlorogenic acid and luteoloside in L. japonicae. The contents of active components in L. japonicae decrease significantly after stored for 12 months. It is necessary to establish shelf life standard of L. japonicae,so as to guarantee the effectiveness of drug use in the clinic.
6.The effect of Glycogen synthase kinase-3 inhibition on dysfunction of the learning and memory and anxiety emotion after rat's chronic cerebral ischemia
Zhaohui YAO ; Shaofeng ZHANG ; Songlian ZHANG
Chinese Journal of Behavioral Medicine and Brain Science 2015;24(5):431-434
Objective To explore the roles of glycogen synthase kinase-3β (GSK-3β) in cognitive dysfunction and emotional alterations after rat's chronic cerebral ischemia.Methods 51 SD rats were randomly divided into sham group (sham group,n=17),chronic cerebral ischemia group (2VO group,n=17),chronic cerebral ischemia group + LiCl group (2VO + LiCl group,n=17),according to the table of random number.All groups were intraperitoneally injected with LiCl or saline on 3rd,7th,14th,21 st and 28th day,and then produced the chronic cerebral ischemia models.On the 28th day after model,the spatial learning and memory,fear memory,and anxiety emotion were detected.Results The Morris water maze test showed that 2VO group spent longer latent time searching and finding the platform than sham group (4th day P<0.01,3rd,5th,6th,7th day P<0.05).2VO+LiCl group spent shorter latent time than 2VO group (4th day P<0.01,5th,6th,7th day P<0.05).After removing the platform,2VO group spent longer time arriving the former location than sham group (P<0.05).And 2VO+LiCl group spent dramatically different time compared to 2VO group (P<0.01).Step-down test showed 2VO group spent shorter latent time than sham group (2VO group:(41.00±1.87)s,sham group:(44.55±2.77)s) (P<0.05).2VO+ LiCl group spent dramatically longer latent time compared to 2VO group (2VO +LiCl group:(43.40± 1.35)s) (P< 0.05).2VO group made much more mistakes times than sham group (P<0.05).2VO+LiCl group made dramatically less mistakes times compared to 2VO group (P<0.05).The elevated plus maze test showed 2VO group had much less ratio of retention time in open arms (among total arms retention time) than sham group (2VO group:(0.23± 0.01),sham group:(0.25± 0.01)) (P< 0.01).2VO + LiCl group had much larger ratio than 2VO group (2VO + LiCl group:(0.24±0.01),P<0.05).2VO group had much less ratio of entry times in open arms (among total arms entry times) than sham group (P<0.01).2VO+LiC1 group had much larger ratio than 2VO group(P<0.05).Conclusion Chronic cerebral ischemia can lead to deterioration of learning and memory,and anxiety emotion for rats.However,inhibition of GSK-3β can ameliorate these alterations.
7.Clinical analysis of 24 cases of juxtapapillary duodenal diverticula with stenosing papillo-odditis
Chunsheng LI ; Zhaohui ZHANG ; Nengwei ZHANG
Chinese Journal of General Surgery 2001;0(09):-
Objective The aim of this study was to investigate the relationship between juxtapapillary duodenal diverticula (JDDs)and stenosing papillo odditis,and the diagnosis and treatment for this clinical entity.Methods Patients underwent upper gastrointestinal radiography,ERCP, and radionuclide scan. 18 cases were treated with operation,8 cases underwent sphincteroplasty,3 with combined diverticulo sphincteroplasty, 3 with choledochoduodenostomy or choledochojejunostomy,1 with gastrojejunostomy,1 case with diverticulectomy.Results Sphincteroplasty effects a good result for coexistant JDDs and stenosing papilloodditis. There were no recurrence and complication after the combined diverticulo sphincteroplasty. Conclusion There was a causal relation between JDDs and stenosing papillo odditis. Effective treatment was achieved by combining sphincteroplasty with diverticulo sphincteroplasty.
8.Body height estimation from the length of the thoracic segments of spine by digitalradiography in living body
Yunfeng CHANG ; Zhaohui ZHANG ; Yongkang SHU
Chinese Journal of Forensic Medicine 2002;0(05):-
Objective To establish the method of estimating the stature with the length of the thoracic segments of spine.Methods By applying technology of digital radiography(DR),the digital radiography of thoracic segments of 514 living subjects from the population of Han of Sichuan in China are obtained,their length of thoracic segments of spine also were measured from the radiograms and the body height of each subject was recorded.Linear regression analysis in grouping was done between the length of thoracic segments of spine and body height,and than the linear regression equations for stature estimation were produced based on the dimensions of thoracic segments.Results 7 regression equations were established from 7 groups(mixture between males and females,males,females,males between 20 and 45 years of age,males greater than 45 years of age,females between 20 and 45 years of age and females greater than 45 years of age).Each equation has been checked by analysis of variance of linear regression model and proved to be appropriate in statistic(P
9.DNA Microarray Probe Preparation Using cDNA Fragments Library from HCV Genotype 1
Zhaohui SUN ; Wenling ZHENG ; Bao ZHANG
Journal of Chinese Physician 2001;0(06):-
Objective To investigate the feasibility of preparing HCV-1 diagnostic microarray probes using the technique of cDNA fragments library construction. Methods The full-length cDNAs of HCV of subtypes 1a and 1b were digested with restriction endonuclease Sau3A I, and the resulted fragments were cloned into the pMD18-T vector. Positive clones were isolated and identified by sequencing. Results A total of 57 different fragments were obtained, and sequence analysis showed that all the fragments ranging from 200 to 1000bp were specific gene fragments of HCV genotype 1, which can be efficiently used as probes in microarray prepapration. Conclusion The method of preparing microarray probes by construction of cDNA fragments library was effective, quick and simple.
10.Therapeutic effects of inhaled nitric oxide in patients with pulmonary hypertension after mitral valve replacement
Hui JIANG ; Renfu ZHANG ; Zhaohui MA
Chinese Journal of Anesthesiology 1996;0(08):-
2 67kPa) after MVR were enrolled in the study Parameters in hemodynamics and oxygenation were measured with Swan Ganz technique , 5min before NO inhalation (T 1), 5,15 and 30min following NO 20ppm inhalation (T 2,T 3,T 4), 15min after stopping NO 20ppm inhalation (T 5), 15min and 5h following NO 6ppm inhalation (T 6,T 7) and 15min before and after weaning from mechanical ventilator (T 8,T 9) respectively Results Compared with those at T 1, at T 2 pulmonary artery pressure, pulmonary vascular resistance, alveolar arterial oxygen difference and intrapulmonary shunting significantly decreased, but arterial oxygen partial pressure, oxygen content and oxygen availability index increased significantly (P0 05) Conclusions The persistently inhaled low dose NO is effective and safe for the pulmonary hypertension induced with heart surgery