1.Preliminary study on the effect of tyrosol and farnesol on biofilm formation of Candida albicans
Cheng PAN ; Xin WEI ; Weihong LIU
Chinese Journal of Microbiology and Immunology 2008;28(6):533-537
Objective To study the regulation of quorum sensing molecule tyrosol and farnesol on biofilm formation of Candida albicans. Methods Candida albicans biofilms of clinic isolates and standard strain SC5314 were built when quorum sensing molecule existed. And inverted microscope was used to observe the morphology of C. albicans cells. RT-PCR and MTT assay were carried out to investigate the effect of quorum sensing molecule on expression of the two genes (HTA1 and EFG1) and cytoactive. Results Tyrosol could not promote hyphae development and cytoactive of C. albicans biofilms. The expression of HTA1 of C. albicans in biofilms was up-regulated by tyrosol but EFG1 was not. The inhibitory effect of farnesol on hyphae development, cytoactive and gene expression were not changed by addition of tyrosol. Conclusion Tyrosol can make C. albicans biofilms active in early stage. But when tyrosol and farnesol were simultaneously added, the effect of tyrosol were masked by farnesol. And C. albicans cells were more sensitive to farnesol than to tyrosol.
2.Measurements of intraocular pressure after conductive keratoplasty
Xin-Yu, LI ; Lei, LIU ; Cheng, LEI
International Eye Science 2006;6(1):22-24
AIM: To investigate the possible impact of conductive keratoplasty(CK)on intraocular pressure( IOP ).METHODS: 36 eyes of 20 patients with hyperopia underwent IOP measurement with non-contact tonometer (NCT), Goldmann applanation tonometer (GAT) and Schiotz tonometer before and after CK.RESULTS: After CK, a significant decrease was observed by NCT, GAT and Schiotz measurements. The change in IOP readings was not correlated with age, sex,keratometric readings, or attempted correction.CONCLUSION: The applanation tonometer atend to underestimate the true IOP after CK.
4.Effect of tetramethylpyrazine injection on serum ion and β2-GPI/ox-LDL in patients with IgA nephropathy
Peng WANG ; Xin LIU ; Pan CHENG
Chinese Journal of Biochemical Pharmaceutics 2016;36(4):147-149
Objective To investigate the effect of tetramethylpyrazine injection on serum ion and β2-GPI/ox-LDL in patients with IgA nephropathy.Methods 58 IgA nephropathy patients were randomly divided into two gorups with 29 cases in each group.The control group were treated by benazepril and conventional treatment of dipyridamole, the experiment group were treated on the basis of the control group with tetramethylpyrazine injection.10 days of 1 courses, 2 courses of treatment.The serum ion,β2-GPI/ox-LDL and renal function related indexes were tested.Results Compared with before treatment, the serum inorganic phosphorus,β2-GPI/ox-LDL, Scr, BUN, CysC levels and 24 h urinary protein quantitation were lower( P<0.05), the blood calcium level were higher(P<0.05).Compared with the control group, the serum inorganic phosphorus,β2-GPI/ox-LDL, Scr, BUN, CysC levels and 24 h urinary protein quantitation were lower(P<0.05), the blood calcium level were higher(P<0.05), the clinical effect were higher (P<0.05).Conclusion Tetramethylpyrazine injection can effectively decrease the serum phosphorus, β2-GPI/ox-LDL, SCR, BUN, CysC levels and urinary protein amount of patients with IgA nephropathy, elevate blood calcium levels, significantly improve renal function and with less adverse reactions.
5.Matrix metalloproteinase and colorectal cancer
Xin CHENG ; Ying HUANG ; Ning LIU
Journal of International Oncology 2016;43(7):538-540
Matrix metalloproteinase (MMP)plays an important role in the degradation of extracellular matrix components,which is crucial for tumor growth,invasion and metastasis.As one with the largest relative molecular mass in MMP family,MMP-9 takes part in the generation and progression of colorectal cancer. Research shows that MMP-9 can be used for the early diagnosis of colorectal cancer.The expression levels of MMP-9 in tissue and plasma are negatively correlated with prognosis of the postoperative patients with colorectal cancer.In addition,targeted therapy drugs will be designed on the basis of MMP-9 expression increased in colorectal cancer.
6.Effect of triethanolamine cream in treatment of wound healing and its effect on level of IL-2 , IL-8 and TNF-α
Peng WANG ; Xin LIU ; Pan CHENG
Chinese Journal of Biochemical Pharmaceutics 2017;37(3):273-275
Objective To study the clinical effect of triethanolamine cream in treatment of traumatic wounds and its effect on level of interleukin-2 (IL-2), interleukin-8 (IL-8) and tumor necrosis factor-α(TNF-α).Methods 88 patients with traumatic wounds were selected in our hospital from February 2015 to January 2016, those patients were divided into observation group and control group according to coin method.The control group was treated with alginate dressing, observation group were given triethanolamine cream for treatment.The levels of IL-2, IL-8, TNF-αand visual analogue scale(VAS) between the two groups were compared.The clinical curative effect of the two groups was evaluated.Results After treatment, the total effective rate of the observation group(90.91%) was significantly higher than the control group (68.18%).There were no significant differences in VAS scores between the two groups before treatment, 5, 10,20 days after treatment, the VAS scores of the two groups were significantly lower than before treatment (P<0.05), at 5,10,20 days after treatment, the VAS scores in the observation group were significantly lower than the control group (P<0.05).The level of IL-2 in the observation group were significantly higher than the control group, the levels of IL-8,TNF-αwere significantly lower than the control group (P<0.05).Conclusion Triethanolamine cream can increase the level of IL-2 and decrease the levels of IL-8 and TNF-αin patients with traumatic wounds, it can relieve the pain of patients and has good clinical curative effect.
8.Reconstruction of Achilles tendon by transfer of the soleus tendon flap
Xin-Cheng LIU ; Tian-Yun ZHAO ;
Chinese Journal of Orthopaedic Trauma 2002;0(04):-
Objective To introduce a new surgical method of reconstructing A ch illes tendon by transfer of the soleus tendon flap. Methods The method was desig ned on the basis of the anatomical characteristics of the superficial muscles as sociated with Achilles tendon. It was applied to treat 12 patients with Achilles tendon defects. These patients were followed up for 0.5 to 6 years (average 39 months). Results The curative effect of the method were assessed according to Ar ner-Lindholms evaluation criteria. 9 cases were rated as excellent, 2 fine an d 1 poor, with the total excellent and fine rate being 92%. Conclusions ①Misdi agnosis and improper initial treatment are the major causes of Achilles tendon d efects. ②Systematic training after operation is very important for good curativ e effects. ③The method mentioned above brings about less trauma, less negative effects on blood supply to Achilles tendon, and good healing after operation.
9.Effect of Ligustrazine on Expression of Induced Nitricoxide Synthase with Cisplatin-induced Ototoxicosis
Ming HAN ; Xin CHENG ; Xiuzhen CHENG ; Rulin LIU
Chinese Journal of Rehabilitation Theory and Practice 2008;14(4):343-344
Objective To observe the expression of induced nitricoxide synthase(iNOS)in ligustrazine against cisplatin-induced ototoxicity.Methods Fifty white guinea pigs with normal hearing were randomly divided into the control group,ligustrazine group and traditional Chinese drug(TCD)group.The alternations of hearing function were evaluated by the examination of auditory brainstem response(ABR).Some specimens were perfused by AgNO3 and observed the damage of bristle cell.And some were sent for immunohistochemistry to detect the expression of iNOS.Results Compared with the control group,the threshold of ABR in ligustrazine group and TCD group were significantly different.There was a significant difference between the ligustrazine group and TCD group.There was no expression of iNOS in Cortis',spiral ganglion cell and stria vascularis in normal cochlear(control group).In the ligustrazine group,the expression became stronger in spiral ganglion cell,stria vascularis,spiral ligament and Cortis'.INOS also expressed in TCD group.Conclusion Ligustrazine can antagonize cisplatin-induced ototoxicity by inhibiting the expression of iNOS.
10.Design of method comparison and bias estimation of multi tests on multi instruments
Ling QIU ; Xin-Qi CHENG ; Li LIU ; Fu-Cheng LIU ; Qian LIU ; Zeng-Mei GE ;
Chinese Journal of Laboratory Medicine 2003;0(09):-
Objective To design an experiment for method-comparison and bias estimation of multi tests on multi instruments.Methods According to the procedure described by the NCCLS approved guideline EP9-A and improving the method of sample collection,we took 8 patient mixing samples each day to analyze all comparison tests on 11 auto-chemistry analyzer within following 5 days.The duplicates were assessed within the same run.The coefficient of correlation and average bias% were calculated,and the system errors at medical decided levels were assessed.Results Taking ALT as an example,the coefficients of correlation were between 0.994-1.000,and the average bias% were between-0.460%-4.927%,SE at 40U/L was-1.510-1.834 and SE at 300 U/L was-3.101-9.188.Conclusion In all tests that joined the comparison among the different instruments,28 tests were acceptable,2 tests were acceptable after modifying the coefficients,and AMY and LIP were not acceptable.