1.Research on the factors that affect the employment of postgraduates of basic medicine
Jinyan FAN ; Yun ZHANG ; Ruofan LI
Basic & Clinical Medicine 2006;0(04):-
Currently seeking for employment of students of basic medical sciences has become a serious challenge.In this report,some important factors that affect the employment are analyzed,such as the students' qualities,the reputation of school,the opinion to occupation,concerned information and so on.Some responding strategies are proposed such as guaranteeing the students' qualities,strengthening reformation and employment tutoring principles,all those ways help the students to face the situation reasonably and build the right employment opinion to better their choice of occupation.
2.Mediating effect of feeling of inadequacy on relationship between self consistency and anxiety in medical students
Fenglian FENG ; Ming LI ; Ruofan LI
Chinese Journal of Behavioral Medicine and Brain Science 2017;26(5):462-466
ObjectiveTo explore the relationship among self consistency and congruence,the feeling of inadequacy(FIS) and anxiety as well as the mediating effect of FIS between self consistency and congruence and anxiety.MethodsA total of 1164 students recruited from two medical colleges in Hebei province using cluster random sampling were investigated with scale for the feeling of inadequacy,self consistency and congruence scale and rating anxiety scale.ResultsThe relevance ratio of anxiety in Hebei medical colleges students was 42.7%.There were significant differences in the detection rate among genders(male:46.4%,female:40.5%),grade(freshman:38.9%,sophomore:41.0%,junior:47.5%)and family economic status(Preferably:38.5%,commonly:40.1%,badly:50.8%) in medical students(all P<0.05).There were no statistical significance for the incidence rates of students from different origins(P>0.05).Anxiety score was positively correlated with the score of self consistency and congruence(r=0.274,P<0.01),and was negatively correlated with the score of the feeling of inadequacy (r=-0.364,P<0.01).And the score of self consistency and congruence was negatively correlated with the score of feeling inadequacy(r=-0.335,P<0.01).Multiple stepwise regression analysis revealed that factors of the feeling of inadequacy and self consistency and congruence accounted for 35.6% of anxiety variance.The feeling of inadequacy played a mediating role in self consistency and congruence and anxiety.The mediating rate was 60.06%.ConclusionThe anxiety issue of medical students should be paid more attention.It is possible for the high level of feeling of inadequacy and low level of self consistency and congruence to increase the occurrence rate of anxiety.The feeling of inadequacy can strongly predict medical students'anxiety.
3.A clinical study on surgical treatment of acute deep vein thrombosis in the lower limb
Hongsheng GU ; Shangli LIU ; Ruofan MA
Chinese Journal of Orthopaedic Trauma 2002;0(04):-
Objective To investigate the clinical effects of surgical treatment of acute deep vein thrombosis (DVT) in the lower limbs. Methods Twenty four cases with DVT were treated with a 2~3cm incision at the cross of superficial and deep femoral veins to take the thrombasis out. Moulding thrombasis were pulled up with ova circular tongs, and fragmented thrombi were spilled out of the incision with the prelum arteriol winding from foot to thigh. The artery was rinsed with heparinized saline for three minuets till the femoral vein was completely unobstructed. The vein was sutured, and the wound was drained under negative pressure. Results The near future effects: Limb swelling and pain disappeared in seventeen cases, conditions turned for the better in six cases, and there was no improvement in one case. The long term effects: Twenty one were followed up for an average of one year and three months. All patients had excellent walking and standing except two cases who suffered lower limb swelling and pain occasionally. Conclusions The operation of vein thrombectomy is a simple, easy and excellent approach to treat DVT, especially within six days after the the condition.
4.Analysis of clinical manifestation,misdiagnosis and prognosis in patients with tendious sheath tubercular
Orthopedic Journal of China 2006;0(21):-
[Objective]To analysis the clinical manifestation and treatment of tendious sheath tubercular,probe the influencing factor of misdiagnosis and effect of treatment,in order to offer evident base for diagnosis and treatment.[Method]The material of 86 cases(from January 1994 to Jun 2005)were reviewed and statistically analyzed including sex,age,nidus region,clinical manifestation,method and effect of treatment,etc.[Result]65% of the cases were 30~49 years old.Sexual difference was not significant.Nidus region in right side was apparently higher than that in left(67%:30%).Major manifestation was edema,tenderness and mal-motion.The misdiagnosis rate and recurrent rate were 88% and 1.2%.[Conclusion]Untypical clinical symptoms and sign,non-special laboratory examinations lead to misdiagnosis.The effective treatment includes integrity excision,local and general chemotherapy,which made recurrent rate low.
5.Nerve palsy complications in artificial hip replacement
Dongsheng HUANG ; Ruofan MA ; Jie XU
Chinese Journal of Trauma 2003;0(08):-
Objective To analyze the causes, prevention and treatment measures for nerve palsy complications in artificial hip replacement. Methods A total of 413 consecutive hip replacements performed from January 1991 to December 2001 were retrospectively studied. There were three cases of nerve palsy with a prevalence of 0.73%. Among them, there were two cases of sciatic nerve palsy and one femoral nerve palsy. Results The causes for nerve palsy in these three cases were hypotension shock due to excessive anticoagulation against deep venous thrombosis, hematoma compression and unknown causes respectively. The neuronal function of three cases of nerve palsy was recovered at different degrees through correction of shock, clearance of hematoma and rehabilitation therapy. Conclusions The causes for nerve palsy complication during artificial hip replacement are direct or indirect traction, compression and ischemia. Understanding the etiology of nerve palsy to avoid the nerve injury, immediate and correct management play an important role in prevention and treatment of nerve palsy during artificial hip replacement.
6.Positive selection using anti-CD11c magnetic beads for isolation of tumor infiltrating dendritic cells in lung cancer tissues
Jingwei JIANG ; Xiaohua LIANG ; Xinli ZHOU ; Ruofan HUANG ; Zhaohui CHU
Chinese Journal of Cancer Biotherapy 2006;0(06):-
Objective:To establish a method for isolating tumor infiltrating dendritic cells(TIDC)from mice models of Lewis lung cancer by positive selection using anti-CD11c magnetic beads.Methods:A total of 1.0?10~6 Lewis lung cancer cells were subcutaneously injected into a C57BL/6 mice at the lateral abdominal wall to establish the mouse model of lung cancer.TIDC were isolated positively using anti-mouse CD11c magnetic beads;they were labeled by anti-mouse CD11c,and then the purity of the isolated cells was tested by FACScan flow cytometer.The cells were also double labeled by PE-conjugated MHC-ⅡmAb and FITC-conjugated CD83 mAb or FITC-conjugated CD86 mAb to analyze the phenotype of cells by FACScan flow cytometer.Results:The positive selection using anti-CD11 c magnetic beads isolated(1.73?0.31)?10~6 TIDC from each gram of Lewis lung cancer tissue,which accounted for(2.18?0.29)%of the cells in the tumor tissues.The purity of TIDC was 96.49%.Electron microscope showed that the isolated TIDC had the typical character of DC cells.The positive rates of MHC-Ⅱ,CD83 and CD86 molecules in TIDC surface were(51.25?4.21)%, (3.48?0.34)%and(3.07?0.65)%,respectively.Conclusion:The positive selection using anti-CD11c magnetic beads is highly effective,simple,and economic,and is worth popularizing.
7.Effects of B7-H1 molecule blockade on tumor-infiltrating dendritic cell-mediated T-cell function
Yamin CHEN ; Xiaohua LIANG ; Ruofan HUANG ; Xinli ZHOU
Chinese Journal of Cancer Biotherapy 1994;0(01):-
Objective:To explore the expression of B7-1,B7-2 and B7-H1 on tumor-infiltrating dendritic cells(TIDC) and on splenic dendritic cells(SDC),and to investigate TIDC-mediated and SDC-mediated T-cell function after blocking B7-H1 expression in these dendritic cells.Methods: The TIDCs and SDCs were isolated from tumor-bearing mice using anti-mouse CD11c magnetic beads.The expression of B7-1,B7-2 and B7-H1 on TIDC and SDC was analyzed using flow cytometer.T cells were co-cultured with TIDCs or SDCs for the mixed lymphocyte reaction(MLR),and monoclonal antibodies to B7-H1 or the isotype control antibodies were added to the MLR cultures.T-cell proliferation was assessed using XTT method and the secretion of IL-10 was detected using ELISA.Results: B7-1 and B7-2 positive TIDCs were significantly less than SDCs(P0.05).T-cell proliferation stimulated by TIDCs was weaker than that stimulated by SDCs;T cells produced more IL-10 after TIDCs stimulation than after SDCs stimulation(P
8.Effects of deguelin on proliferation and apoptosis of MCF-7 breast cancer cells by phosphatidylinositol 3-kinase/Akt signaling pathway.
Zhaohui CHU ; Xiaohua LIANG ; Xinli ZHOU ; Ruofan HUANG ; Jingwei JIANG
Journal of Integrative Medicine 2011;9(5):533-538
Objective: To study the effects of deguelin on proliferation and apoptosis of human breast cancer cell line MCF-7 and on phosphatidylinositol 3-kinase/protein kinase B (PI3K/Akt) signaling pathway. Methods: After treatment with 0, 1, 5, 10, 15 and 20 μmol/L of deguelin for 6, 24, 48 and 72 hours, the proliferation inhibition rate of MCF-7 cells was measured by cell counting kit-8 assay. Apoptosis rate of MCF-7 cells was detected with Annexin V-fluorescein isothiocyanate/propidium iodide double staining by flow cytometry and the apoptotic morphology was observed under a transmission electron microscope. After treatment with 0, 1 and 5 μmol/L of deguelin for 6 hours, 5 proteins involved in the PI3K/Akt signaling pathway were examined by Western blot analysis. Results: Deguelin at doses of 5, 10, 15 and 20 μmol/L inhibited the proliferation of MCF-7 cells at 6, 24, 48 and 72 hours. There was a significant difference in each group compared with the control group (P<0.01). The inhibitory effect was more marked with increasing concentration and duration of treatment. There were statistical differences (P<0.05) among 5, 10, 15 and 20 μmol/L groups. However, 1 μmol/L of deguelin had no obvious effects on the proliferation of MCF-7 cells at 6, 24, 48 and 72 hours, showing no significant difference compared with control group (P>0.05). Deguelin at doses of 5, 10, 15 and 20 μmol/L induced apoptosis of MCF-7 cells at 6 hours. There were significant differences (P<0.01) in the early and late apoptosis rate between the treated groups and the control group. The typical apoptotic MCF-7 cells were observed under the transmission electron microscopy. However, 1 μmol/L of deguelin had no apparent effect in inducing apoptosis of MCF-7 cells at 6 hours. After treatment with 5 μmol/L of deguelin for 6 hours the expression of phosphorylated phosphatase and tensin homologue deleted on chromosome 10 (PTEN) (Ser380), phosphorylated 3-phosphoinositide-dependent protein kinase 1 (PDK1) (Ser241), phosphorylated Akt (Thr308) and phosphorylated glycogen synthase kinase-3β (GSK-3β) (Ser9) proteins were significantly reduced in MCF-7 cells, while there was no significant change in the expression of total Akt protein. However, after treatment with 1 μmol/L of deguelin for 6 hours, there was no apparent change in the expression of these 5 proteins. Conclusion: Deguelin can inhibit the phosphorylation of GSK-3β (Ser9) via inhibition of the phosphorylation of PTEN (Ser380) and PDK1 (Ser241) pathway, thus inducing apoptosis and inhibiting proliferation of MCF-7 cells.
9.TESTIN tumor suppressor gene in endometrial cancer tissues
Ruofan DONG ; Hong PU ; Zhenyu ZHANG ; Yurong MAO ; Jinjin YU
Journal of Chinese Physician 2011;13(11):1452-1454
ObjectiveTo investigate the expression of TESTIN gene in endometrial carcinoma and explore the functions of this gene in tumor development and progression.MethodsqRT-PCR and immunochemical staining assay were used to determine the mRNA and protein level of TESTIN in the tumor tissues,and the relationship between TESTIN expression and clinical pathology characteristics was analyzed.Results Compared to normal tissue,76.5% (52/68) tumor tissues showed TESTIN reduced ( P < 0.01 ),furthermore,this reduction in the subgroup of endometrioid adenocarcinoma was significant,but it was rarely observed in the subgroup of serous papillary adenocarcinoma.ConclusionsTESTIN was obviously down regulated in endometrail carcinoma,especially in endometrioid adenocarcinoma,which indicated TESTIN played an important role in tumorigenesis of uterine.
10.Correlation factor and curative effect evaluation of hip arthroplasty following femoral neck fracture
Ruofan MA ; Jie XU ; Weiping LI ; Yue DING
Chinese Journal of Postgraduates of Medicine 2009;32(29):4-7
Objective To evaluate the clinical outcome of hip arthroplasty following femoral neck fracture.Methods Sixty-one cases of femoral neck fracture were treated by hip arthmplasty from January 2000 to April 2008,and their complete data were available,whose age ranged from 36 to 90 years old,mean age(71.5±14.7)years old.The group comprised 21 men and 40 women.Results Clinical follow-up ranged from 3 months to 8 years.The Harris hip score improved from(17.5±8.4)scores pre-operatively to(78.1±8.5)scores post-operatively,and the average leg-length discrepancy decreased from(2.52±1.09)cm pre-operatively to(0.81±0.73)cm post-operatively.The differences between pre-operative data and post-operative data were significant (P<0.05).Conclusion Hip arthroplasty is an ideal procedure for old femoral neck fracture in elderly patients or those who followed failed previous treatment.