1.Relationship between thrombin activated fibrinolysis inhibitor in plasma and changes of coagulant and fibrinolytic function in type 2 diabetes
Lanjun ZHONG ; Xiaona LI ; Jinfang DING
International Journal of Laboratory Medicine 2006;0(05):-
Objective To evaluate the relationship of thrombin activated fibrinolysis inhibitor (TAFI) in plasma with changes of coagulant and fibrinolytic function in type 2 diabetes.Methods The plasma level of TAFI was measured by ELISA, fibrinogen was analyzed with Clauss assay and plasminogen was detected by chromogenic assay.Results The plasma levels of TAFI, Fib and the activity of PLG were significantly increased in type 2 diabetes with (P
2.Analysis of ganciclovir and its related substances using high performance liquid chromatography and liquid chromatography-mass spectrometry methods
Chengping LI ; Mao MAO ; Lanjun ZHENG ; Weiguang SHAN
Journal of Pharmaceutical Analysis 2010;22(4):218-222
Objective High performance liquid chromatography (HPLC) and liquid chromatography-mass spectrometry (LC/MS) methods were developed for the determination of ganciclovir and its related substances. Methods A Hypersil ODS2 column (4.6mm×250mm, 5μm) was used with a mobile phase of 0.02M potassium 1.0mL/min, and UV detector set at 254nm was used for monitoring the eluents. Results The method was simple, rapid, selective and capable of separating all related substances at trace level with a detection limit of 0.04μg/mL. It has been validated with respect to accuracy, precision, linearity, and limits of detection and quantification. The linearity range was 10.2-153.0μg/mL with r=0.9998. The percentage recoveries ranged from 96.7% to 101.6%, and RSD was 1.24%-1.96% (n=5). Conclusion The method was found to be suitable not only for monitoring the reactions during the process development but also for quality control of ganciclovir. For identification of related substances, LC/MS was used. The mainly related substances of ganciclovir active pharmaceutical ingredients (API) were determined as guanine, (1, 3-dioxolan-4-yl) methyl acetate, and diacetyl guanine.
3.Influence of precision medicine-based health education on cognitive level of disease knowledge, anxiety and depression in patients with gestational diabetes
Zhaona SUN ; Yunyun LI ; Lanjun WU ; Qingxian ZHU ; Xiaoyan WU
Modern Clinical Nursing 2017;16(1):38-42
Objective To study the influence of precision medicine-based health education on cognitive level of disease knowledge,anxiety and depression in patients with gestational diabetes.Methods Toally 84 cases of gestational diabetes patients in our hospital from September 2014 to December 2015 were divided into a study group and a control group according to the random number table,42 cases in each group.While the routine nursing intervention was done in the control group,the precision medicinebased health education program was carried out in the study group.The two groups were assessed using the cognitive questionnaire designed by our hospital.The self rating anxiety scale (SAS) and self rating depression scale (SDS) prepared by Zung were used to assess the levels of anxiety and depression in the two groups before the intervention and two weeks after the intervention.Results The cognitive level of disease knowledge in the study group after the intervention was statistically significantly higher than that of the control group (P<0.05).Before the intervention,there were statistically insignificant differences in anxiety and depression between the two groups (P>0.05),but after the intervention,the levels of anxiety and depression in the study group were significantly lower than those of the control group (P<0.05).Conclusion The precision medicine-based health education is helpful for the patients with gestational diabetes to improve their diabetes-related knowledge and meanwhile it can relieve their anxiety and depression.
4.Effects of levodopa on nerve growth factor in visual cortex of kitten
Yu, ZHENG ; Xiaoxin, LI ; Lanjun, NIU ; Wenzhen, YU ; Jianqiang DONG
Chinese Ophthalmic Research 2009;27(11):988-991
Objective Nerve growth factor (NGF) is thought to be one of regulating factors of cellular function during the visual plasticity period. Levodopa is a neurotransmitter in central nerve system. Its mechanism of improving the visual function in amblyopia is unclear. Present study was to observe the role of levodopa in treating monocular deprived amblyopia and explore the effects of levodopa on the expression of NGF in visual cortex. Methods The animal models of monocular form deprived amblyopia were established in the right eyes of 12 4-week-old domestic cats by suturing the eyelid for 2 weeks and then the left eyes were reverse sutured. The 6 cats from models received 20 mg/kg of levodopa by oral administration. Other 6 normal cats were as normal controls. Pattern VEP (P-VEP) was recorded to check the visual acuity of the cats. The cell number density of NGF expression in visual cortex area 17 was detected and calculated by immunochemistry and expressed as positive number/field. Results The amplitude of P_(100) of P-VEP was significantly declined in monocular deprived eyes compared with fellow eyes and normal eyes in 2 weeks after monocular deprivation (P <0. 01) . However, after administration of levodopa, the amplitude of P_(100) recovered to normal 2 weeks later, presenting a insignificant difference between levodopa treating group and normal group (P> 0. 05). The latency of P_(100) was followed the same pattern between two groups. The NGF positive cells were decreased in monocular deprived group compared with normal group and levodopa group (80. 23 ± 9. 54 vs 111. 83 ± 7. 49, 80. 23 ± 9. 54 vs 118. 06 ± 12. 37, P < 0. 01), but no significant difference in NGF positive cells was found between normal group and levodopa group (111.83 ±7. 49 vs 118. 06 ± 12. 37, P = 0. 94). Conclusion Levodopa is supposed to accelerate the recovery of visual function in amblyopic cat by enhancing the NGF expression in visual cortex area 17 during the critical period of visual development.
6.Role of homeobox A13 in epithelial - to - mesenchymal transition induced by serum albumin overload in hu-man renal tubular epithelial cells
Li PENG ; Qingnan HE ; Xiaoyan LI ; Lanjun SHUAI ; Haixia CHEN ; Yongzhen LI ; Zhuwen YI
Chinese Journal of Applied Clinical Pediatrics 2015;(21):1663-1667
Objective To explore the role of nuclear translational factor homeobox A13(HOXA13)gene in epithelial - to - mesenchymal transition(EMT)induced by human serum albumin(HSA)overload in human renal tu-bular epithelial(HKC)cells. Methods HKC cells were treated with different concentrations of HSA(ranging from 0 - 30 g/ L)for 48 h or 20 g/ L HSA for different times(ranging from 0 - 72 h)in vitro. The protein expressions of cy-tokeratin(CK),Vimentin,and HOXA13 protein in HKC cells were detected by using Western blot respectively. Mean-while,liposome - mediated DNA transfection was used to transfect the HOXA13 gene into HKC cells before HSA treat-ment,and the expressions of CK,Vimentin and HOXA13 protein in HKC cells were also detected by using Western blot. Results (1)The protein expression of CK decreased but Vimentin increased after HKC cells were exposed to HSA,which was in a concentration - and time - dependent manner.(2)Expression of HOXA13 was down - regulated by HSA in a dose - and time - dependent manner,and the expressions of HOXA13 protein in HKC in 5 g/ L,10 g/ L, 20 g/ L,30 g/ L group were 58. 24%(P = 0. 005),44. 73%(P = 0. 003),38. 40%(P = 0. 033)and 24. 83%(P =0. 011)respectively as compared with 0 g/ L group. Likewise,the protein expressions of HOXA13 in 24 h,48 h,72 h group were 52. 00%(P = 0. 023),46. 83%(P = 0. 008)and 35. 10%(P = 0. 034)respectively as compared with 0 h group.(3)There was a positive correlation between the levels of HOXA13 protein expression and CK protein expression (r = 0. 86,P = 0. 005),while the relationship between the levels of HOXA13 protein expression and Vimentin protein expression was negative(r = - 0. 94,P = 0. 002).(4)Up - regulated expression of HOXA13 in HKC cells by lipo-fectamine transfection alleviated the degree of EMT induced by HSA significantly. The expression of Vimentin decreased by 35. 34%(P = 0. 005)while the expression of CK increased 360. 00% - fold(P = 0. 005),compared with that of untransfected HKC cells. Conclusion EMT induced by HSA in HKC cells may play a role through HOXA13.
7.Evaluation on drill method to prepare for healthcare-associated infection outbreak
Chunmei TIAN ; Ziyuan LONG ; Lanjun GUO ; Debao LI ; Ying ZHENG ; Xiaoxia GUO
Chinese Journal of Infection Control 2015;(3):199-201
Objective To evaluate the drill method to prepare for healthcare-associated infection (HAI)outbreak, and strengthen the control of HAI outbreak.Methods According to two cases of surgical site infection (SSI)re-ported by a neurosurgical department on January 16,2014,HAI outbreak emergency drill was started,SSI occurred from January 2012 to January 2014 were analyzed,specimens of air,object surface and hands of health care workers (HCWs)in the SSI-related operating room and neurosurgical intensive care unit(NSICU)were taken and analyzed. Results In July 2013,3 cases of SSI occurred in neurosurgical department (1 case was suspected of SSI,and didn’t per-form cerebrospinal fluid culture),SSI didn’t exceed 2 cases in the other months,and SSI outbreak couldn’t be confirmed. 16 specimens of air,object surface and hands of HCWs in operating room were taken,microbial detection results were all qualified.13 specimens of air,object surface and hands of HCWs in NSICU were taken,qualified rate was 61.54%;and mould was detected from 2 air specimens.24 disposable objects of neurosurgical department were performed bacterial cul-ture,3 were positive,and all were qualified after repeated detection.Conclusion HAI outbreak drill is helpful for HAI management professional personnel to grasp the method of HAI outbreak investigation method,improve the correct hand washing of surgeons and nurses,strengthen the standard operating procedure,and ensure the safety of pa-tients.
8.Epidermal growth factor receptor mutations in primary tumors, N2 lymph nodes, and plasma samples in Chinese patients with stageⅢA-N2 non-small cell lung cancer
Zhe LI ; Jianfeng GUO ; Yang YANG ; Yanfeng LIU ; Ruibin XU ; Tiehua RONG ; Lanjun ZHANG
Chinese Journal of Clinical Oncology 2016;43(12):531-535
Objective:Mutations in epidermal growth factor receptor (EGFR) can predict tumor response to tyrosine kinase inhibitors (TKIs) in non-small cell lung cancer (NSCLC). However, not all cases of NSCLC with EGFR mutations can respond well;thus, discovering the heterogeneity of NSCLC at the molecular level is necessary. This study aimed to determine the discrepancy in EGFR mutations in primary tumors, N2 lymph nodes, and plasma samples. Methods:Primary tumors, N2 lymph nodes, and plasma samples obtained from 49 patients with stageⅢA-N2 NSCLC were analyzed for EGFR mutations in exons 19 and 21 by using mutant-enriched liquidchip technology. Results:In 49 patients, we detected 18 (36.7%) EGFR mutations in primary tumors, 11 (22.4%) mutations in N2 lymph nodes, and 2 (4.1%) mutations in plasma samples. Eleven (22.4%) cases showed discordance in EGFR mutations between primary tu-mors and N2 lymph nodes. In nine cases, EGFR mutations were detected only in primary tumors, whereas EGFR mutations were de-tected only in N2 lymph nodes in two cases. In addition, EGFR mutations were detected in the plasma samples of two patients, who al-so carry mutations in their primary tumors. Conclusion:A considerable proportion of NSCLC cases showed discrepancy in EGFR muta-tions between primary tumors and N2 lymph nodes. In addition, the detection rate of EGFR mutations was lower in plasma samples obtained from patients with stage IIIA-N2 NSCLC. All of the results indicated tumor heterogeneity at the molecular level during metas-tasis, and this heterogeneity may have implications during treatment with TKIs.
9.Experimental study of bio-material artificial chest wall for reconstruction of huge bony defects of chest wall in mongrels
Wuping WANG ; Lanjun ZHANG ; Chongli HAO ; Zhe LI ; Kang GUO ; Hao LONG ; Tiehua RONG
Chinese Journal of Trauma 2010;26(1):27-31
Objective To build a bio-material artificial chest wall and discuss its feasibility and efficiency in reconstruction of huge bony defects of chest wall in mongrels in comparison with traditional "sandwich" procedure. Methods (1) The procine osteal and membranate tissues were treated with epoxy cross linking method and their surfaces were modified with amino acid solutions at various concen-trations and at different temperatures to obtain an artificial pleura and artificial ribs for construction of the artificial chest wall. (2) The huge bony defects (5 cm×5 cm) were created in chest wall of five Chinese mongrels. (3) Three mongrels in test group was repaired with artificial chest wall, while two mongrels in control group was repaired with traditional "sandwich" complex. A follow-up was carried out to observe reconstruction effect and rejection in both groups at 3,6 and 12 months after implantation. Results There was no death found during the perioperative period and at 12 month follow-up in test group, with abnormal contour of chest wall and good thoracic activity after reconstruction. In the meantime, there found no rejection, collapse in the repaired region or paradoxical respiration. The postoperative X-rays at 3,6,12 and 24 months showed a good integrity of the thorax, with no collapse, deformation or abnormal movement. Meanwhile, the follow-up of control group showed a normal contour but slight collapse, with no paradoxical respiration. The Chest X-ray examination revealed that the bone cement in" sandwich" complex was X ray opaque and showed mild abnormal movement with breathing. The common blood test and immune items showed no abnormal. Conclusions The bio-material artificial chest wall is a safe and effective reconstruction technique for bony defects of thoracic wall in mongrels, with no acute or chronic rejection.
10.Olive oil-based lipid emulsion for parenteral nutrition in patients after esophagectomy
Zhe LI ; Lanjun ZHANG ; Wuping WANG ; Chongli HAO ; Kang GUO ; Guowei MA ; Hui YU ; Tiehua RONG
Chinese Journal of Clinical Nutrition 2011;19(2):74-78
Objective To assess the safety and efficacy of an olive oil-based lipid emulsion for parenteral nutrition in patients after esophagectomy.Methods In the randomized controlled trial,60 patients undergoing esophagectomy were divided into study group(n=30,received olive oil-based lipid emulsion)and control group [n=30,received medium-chain triglyceride/long-chain triglyceride(MCT/LCT)emulsion].The parenteral nutrition Was provided for 7-10 postoperative days.The nutritional formulas were equivalent in nitrogen,calorie,osmotic pressure,and fluid volume.Peripheral venous blood tests were performed before operation and on the first and eighth postoperative days.All the patients were evaluated by nutritional status(weight,body mass index,nutritional risk screening,etc.),safety profiles[full blood test,electrolytes,aspartate aminotransferase(AST),alanine amiotransferase(ALT),total bilirubin and direct bilirubin,blood urea nitrogen(BUN),creatinine,blood glucose,etc.],and efficacy indicators(hemoglobin,albumin,total protein,etc.).Results The albumin and total protein levels returned to the normal ranges in beth groups 8 days after operation,although both levels were significantly higher in study group(P=0.000).Also,the difference of total protein levels between the eighth and first postoperative days Was significantly higher in the study group(P=0.002).In addition,the AST and BUN readings returned to normal ranges 8 days after operation in the study group, which were significantly lower than those in control group (P = 0.025, P = 0.013).No serious adverse events were reported in both groups.Other nutritional parameters, renal and hepatic safety profiels, vital signs, and hematology showed no significant difference between two groups.Conclusions Olive oil-based lipid emulsion is a safe and efficient lipid emulsion for parenteral nutrition in patients undergoing esophagectomy.Compared with MCT/LCT, it has less effect on AST and BUN.