1.On the Reform of Experimental Teaching of Microbiology for Pharmacy Speciality
Yan GUAN ; Hui-Juan CHENG ; Chang-Zhong WANG ; Hong-Xia LE ; Yan WANG ;
Microbiology 1992;0(06):-
The authors helpfully discuss the design idea,experimental module design,examination methods,and experiment textbook construction in experimental teaching of microbiology,and conduct further researches on the basic skill training,verifying experiment,integrative experiment,and investigative experiment in the course. This study aims to enhance effects of the experimental teaching,to cultivate high potential talents who can master essential knowledge and skills,and creatively carry out scientific research.
3.Research advances in the effect and utilization of protein corona on the circulation of nanoparticles in vivo
Dong-yan ZHOU ; Cheng JIANG ; Zhi-yu GUAN ; Wei-feng ZHU ; Ling-yun ZHONG ; Jing LIU ; Rong-hua LIU
Acta Pharmaceutica Sinica 2021;56(2):487-495
Nanoparticles have better applicability in the detection, treatment of cancer and various difficult diseases, but mononuclear phagocytosis system can seriously shorten the time of nanoparticles
4.Three-dimensional finite element analysis on splint fixation for treating ulnar styloid process fracture
Yong-Yao LI ; Hao CHENG ; Yong ZHAO ; Guang-Wei LIU ; Yong-Zhong CHENG ; Ji-Chao GUAN
Chinese Journal of Tissue Engineering Research 2018;22(11):1737-1742
BACKGROUND: Distal radius fractures are often accompanied by the ulna styloid process fractures, and the treatment of the ulna styloid process fracture is disputed in clinic. Manipulative reduction and splint fixation is a common method to treat such diseases. The mechanism of intervention on ulnar styloid process is difficult to obtain in the corpse mechanics experiments. In recent years, the finite element analysis method has been widely used in the field of orthopedics, which has opened up a way for the study of orthopedic disease. OBJECTIVE: To explore the biomechanical mechanism of splint intervention on ulnar styloid fracture by finite element analysis, and to provide the basis for clinical treatment choice. METHODS: A three-dimensional finite element model of normal wrist joint was established based on the forearm and wrist CT images of a healthy volunteer. The validity of the model was verified by comparing with the experimental data in the literature. On this basis, four wrist joint finite element models with and without splint fixation for ulnar styloid type I and type II fractures were established. Under axial compression, lateral extension, pronation and supination working conditions, the changes of the relative displacement of the distal radioulnar joint and the ulnar styloid fracture broken end were analyzed. RESULTS AND CONCLUSION: (1) A three-dimensional finite element model of normal wrist joint was established and validated, and the other four models were established based on this model. (2) In pronation and supination conditions, the relative displacement values of the ulnar and radial joints in the ulnar styloid type I and II fracture models were greater than those in the normal wrist joint model, and the displacement was smaller in the type I fracture model than in the type II fracture model; the displacement was significantly reduced after the intervention on the two fracture models by the splint. (3) In the lateral tension, pronation and supination conditions, the displacement values of the ulnar styloid fracture end in the ulnar styloid type I fracture model were smaller than in the type II fracture model, and the displacement values were significantly reduced after the intervention by the splint. Under the remaining conditions, the change of the above values was not obvious. (4) In conclusion, the stability of distal radioulnar joint became worse after ulnar styloid fracture, and the stability of distal radioulnar joint after type I fracture was less than that after type II fracture. As an elastic fixation method, splint can increase the stability of the wrist ulnar column during the treatment.
5.The diagnosis and microsurgical treatment of solid cerebellar hemangioreticuloma.
Peng-xiang YAN ; Zhong-cheng WANG ; Chun-jiang YU ; Shu-sen GUAN
Chinese Journal of Surgery 2004;42(13):777-780
OBJECTIVETo study the clinical features, neuroimaging presentations, diagnosis and differential diagnosis, and operative warning events of the solid cerebellar hemangioblastoma.
METHODSThe clinical data of 48 patients with solid cerebellar haemangioreticuloma were retrospectively analysed. Preoperative examinations included CT and MRI in all patients, DSA in 20, preoperative embolization of feeding arteries of tumor in 16, a preoperative ventriculoperitoneal shunt was placed in 5 cases. The lesion distribution of 48 patients was as follows: 14 lesions were situated in the left hemisphere of cerebellum with an extent into the cerebellopontine angle in 2 cases, 12 in right hemisphere of cerebellum, 8 in superior vermis, 7 in inferior vermis, 6 in left subtentorium, 1 in left cerebellar tonsil.
RESULTSThe tumors of 48 patients were totally removed. One patient occurred normal perfusion pressure breakthrough during surgery, and gastrointestinal hemorrhage on the second day after operation. Other patients all were intra- and postoperatively uneventful. Except for autoinfusion, no patients transfused heterogenous blood. There were no operative mortality and serious complications in this series.
CONCLUSIONSThe solid cerebellar hemangioblastoma was benign neoplasm. Abiding by properly operative techniques, the optimal results can be obtained.
Adolescent ; Adult ; Angiography, Digital Subtraction ; Cerebellar Neoplasms ; diagnosis ; surgery ; Child ; Diagnosis, Differential ; Female ; Hemangioblastoma ; diagnosis ; surgery ; Humans ; Magnetic Resonance Imaging ; Male ; Microsurgery ; Middle Aged ; Neurosurgical Procedures ; Retrospective Studies ; Tomography, X-Ray Computed
6.Effects of various planting densities on dynamic growth rhythm and root yield of Isatis indigotica.
Yu-hang CHEN ; Han-qing TIAN ; Qiao-sheng GUO ; Qiao-hua DENG ; Jian-ying GUO ; Cheng-zhong GUAN
China Journal of Chinese Materia Medica 2008;33(22):2599-2602
OBJECTIVETo study the effects of various planting densities on dynamic growth and root yield of Isatis indigotica.
METHODThe planting samples were collected to measure the growth period of each organ.
RESULT AND CONCLUSIONUnder different planting densities, both main root length and breadth exhibited a trend of "fast-slow" by stages. However, the number of individual plant leaves were showed a trend of "slow-fast" on growth period. Meanwhile, the leaf length and breadth were exhibited a trend of "increase-decrease". The increase of dry leaf, dry root and whole plant dry matter was faster during the period of 65-76 days after seeding. The differences of root and leaf yields under various densities were significant. Planting densities has a great effect on yield of root. It must be shown that there was a positive development between the individual plant and colony. According to the dry matter of root and leaf, treatment B (i.e., 7 cm x 25 cm) was good choice.
Biomass ; Isatis ; growth & development ; Plant Roots ; growth & development
7.Hemodynamic study of primary hepatocellular carcinoma evolved from viral-induced cirrhosis using CT perfusion imaging.
Qun ZHANG ; Xue-Lin ZHANG ; Yu-Zhong ZHANG ; Guan-Xun CHENG ; Zi-Qian CHEN
Journal of Southern Medical University 2008;28(11):1986-1989
OBJECTIVETo investigate the hemodynamic changes of primary hepatocellular carcinoma (HCC) evolved from hepatic cirrhosis using CT perfusion imaging.
METHODSThirty-two patients with primary hepatocellular carcinoma evolved from virus-induced fibrosis or cirrhosis underwent dynamic CT scanning of the target slices for 60 min. The perfusion parameters of the hepatic parenchyma and HCC including the blood flow (BF), blood volume (BV), mean transit time (MTT), permeability-surface area product (PS), hepatic arterial fraction (HAF), IRF time of arrival (IRF TO) were obtained. Paired-sample t test was used to determine the differences in the perfusion parameters between the hepatic parenchyma and the primary HCC mass.
RESULTSCompared with hepatic BF (117.13-/+31.05 ml/100 mg/min), BV (14.73-/+3.91 ml/100 mg), PS (31.93-/+5.91 ml/100 mg/min), HAF (25.02-/+8.19%), MTT (12.79-/+3.31 s), IRF TO (3.14-/+1.09 s), the primary HCC mass showed significant increments in the BF (239.69-/+96.07 ml/100 mg/min), BV (20.26-/+6.73 ml/100 mg), PS (37.50-/+9.50 ml/100 mg/min), HAF (68.97-/+15.22%) with decreased MTT (7.17-/+1.38 s) and IRF TO (2.42-/+0.94 s). Significant differences were found in all the perfusion parameters between the hepatic parenchyma and HCC (P<0.05).
CONCLUSIONLiver perfusion parameters can represent the hemodynamic changes in the HCC derived from hepatic cirrhosis.
Adult ; Aged ; Carcinoma, Hepatocellular ; diagnostic imaging ; etiology ; physiopathology ; Female ; Hemodynamics ; Hepatitis ; complications ; Humans ; Image Interpretation, Computer-Assisted ; methods ; Liver Cirrhosis ; complications ; Liver Neoplasms ; diagnostic imaging ; etiology ; physiopathology ; Male ; Middle Aged ; Perfusion ; methods ; Radiographic Image Enhancement ; instrumentation ; methods ; Tomography, X-Ray Computed
8.The relationship between the peripheral blood of CD61, CD63, PAC-1 and the transplant kidney function.
Yong ZHANG ; De-lin GUAN ; Cheng-qing XIA ; Zhi-you HAN ; Jian-jun XU ; Ju-zhong GAO ; Ke-rang WU
Chinese Journal of Surgery 2003;41(12):881-884
OBJECTIVESTo explore the relationships between the peripheral blood levels of CD61, CD63, PAC-1 and the incidence of acute rejection and tubular necrosis after renal transplantation, and recovery of the graft function.
METHODSThe peripheral blood levels of CD61, CD63, and PAC-1 of 86 patients with uremia in different stages before and after transplantations were analyzed by flow cytometry. The patients were divided into three groups: (1) twenty-nine patients with normal grafts function, (2) hirty with acute rejection and (3) twenty-seven with acute tubular necrosis. The patients with acute rejection were randomly divided into treatment group with anticoagulants and cntrol group.
RESULTSThe peripheral blood levels of CD61, CD63 and PAC-1 significantly increased (P < 0.05) in the patients with acute rejection, in comparison with those with normal grafts function and those with acute tubular necrosis. The peripheral blood levels of CD61, CD63 and PAC-1 in patients with acute rejection in anticoagulants therapy was lower, recovery time of the grafts function was shorter, one-year survival rates of patients and grafts were higher, as compared with those of controls.
CONCLUSIONSThe patients with acute rejection have significantly high peripheral blood levels of CD61, CD63 and PAC-1 before transplantation, however, these values in patients with acute tubular necrosis are not high, this suggesting that acute rejection might relate to platelet activation, while acute tubular necrosis might not relate to it. After anticoagulants therapy in patients with acute rejection, the grafts function might recover faster and their one-year survival rates and grafts might be higher in those with CD61, CD63 and PAC-1 decreasing remarkably.
Adult ; Aged ; Antigens, CD ; blood ; Dual Specificity Phosphatase 2 ; Female ; Graft Rejection ; Humans ; Integrin beta3 ; blood ; Kidney ; physiopathology ; Kidney Transplantation ; Male ; Middle Aged ; Platelet Activation ; Platelet Membrane Glycoproteins ; Protein Phosphatase 2 ; Protein Tyrosine Phosphatases ; blood ; Tetraspanin 30
9.Changes in small airway function in rhinitis without asthma.
Junfeng JI ; Qiuping WANG ; Yong ZHANG ; Zhiyi WANG ; Xu SHI ; Weijie GUAN ; Kunmin WU ; Li XU ; Wei CHEN ; Fei XUE ; Manjie JIANG ; You CHENG ; Tianyou WANG ; Nanshan ZHONG
Journal of Clinical Otorhinolaryngology Head and Neck Surgery 2015;29(21):1864-1867
OBJECTIVE:
Observe the changes of small airway function in patients with rhinitis but without asthma and/or lower airway symptoms.
METHOD:
Between June 2008 and December 2012, we recruited 903 subjects, including 377 with allergic rhinitis (AR), 262 with non-allergic rhinitis (NAR) and 264 healthy subjects. All subjects underwent meticulous history taking, nasal examination, allergen skin prick test, blood routine test, serum total immunoglobin E assay, pulmonary ventilation function test and bronchial challenge test.
RESULT:
The indices of FEV1/FVC%, MEF25pred% and MMEFpred% were lower in AR group than in the control group (P < 0.05). The indices of FEV1/FVC, MMEFpred%, MEF25pred% and MEF50pred% were also lower in NAR group than in the control group (P < 0.05). According to the FVCpred% and FEV1pred%, there were no differences between rhinitis group and the control group (P > 0.05). The positive rate of airway hyperresponsiveness(AHR) in AR group and in NAR group was 12.2%, 6.1% respectively. Indices of small airway function were all lower in the AHR group than NAHR group in rhinitis.
CONCLUSION
Compared with healthy controls, small airway function in patients with rhinitis has apparent changes, part of rhinitis patients has AHR, and is associated with small airway function changes.
Asthma
;
Case-Control Studies
;
Humans
;
Respiratory Function Tests
;
Respiratory System
;
physiopathology
;
Rhinitis
;
physiopathology
;
Rhinitis, Allergic
;
physiopathology
;
Skin Tests
10.Survey an knowledge, attitude, practice related to contraception among college students in Beijing
Yuan-Zhong ZHOU ; Mei-Mei ZHANG ; Sheng WEI ; Huang-Tao GUAN ; Ping YIN ; Ning REN ; Xue-Bing PANG ; Cheng-Liang XIONG
Chinese Journal of Epidemiology 2009;30(7):710-712
Objective To understand the current status and relative factors on knowledge, attitude, practice to contraception among college students in Beijing and to provide evidence for developing aimed contraceptive service and education in colleges. Methods Quantitative surveys were employed, questionnaire was conducted anonymously among 12 450 unmarried college students under informed consent. Results Among 12 129 students, acknowledgement of contraceptive knowledge among females was superior to males in college(P=0.000). Rates on the favor for unmarried sexual practice and 'sexual liberation' were 81.9% and 60.2% for males, comparing to 74.8% and 54.3% for females respectively. The prevalence rates for masturbation were 74.3% for males and 24.9% for females respectively. 18.4% of the male and 10.5% of the female students had ever experienced unmarried sexual intercourse. Among those students who had sexual experiences, 29.4% of the males had made their sex partners pregnant and 23.1% of the female students had experienced unexpected pregnancy. Statistical significance was found between males and females (P=0.000) in terms of attitudes and behaviors. 51.3% of the male and female students took contraceptive measures during the episode of first sexual intercourse. The excuses for not taking any measures would include: sexual intercourse happened incidentally, not interested in using condom, only one sexual experience would not cause pregnancy, etc. Conclusion The prevalence of unmarried sexual intercourse among college students had been rising. Among those who had experienced unmarried sexual intercourse, the rate of taking contraceptive measures was low and the incidence of unexpected pregnancy was high. It is urgent to strengthen the education and service programs on contraception among college students.