1.Utilization of second sacral alar-iliac technique for lumbosacral fixation in patients with tuberculosis of lumbar and sacrum spine
Cong WANG ; Xu CUI ; Yuanzheng MA ; Ming HU ; Da BAO ; Guan KANG
Chinese Journal of Orthopaedics 2017;37(2):96-104
Objective To evaluate the feasibility and clinical outcomes of second sacral alar-iliac (S2AI) technique utilized in patients with tuberculosis of Lumbosacral spine.Methods 24 cases (15 male,9 female,aged 36-73 years old,average 47.1 years) of tuberculosis of Lumbosacral spine were collected for surgery using spinal and pelvic fixation system (S2AI or IS) between January 2014 and May 2016.Lumbosacral pain and restricted movement were noticed in all cases,of which 9 cases with radiating pain of lower limb and 7 cases with intermittent claudication,2 cases with saddle anesthesia.Formal anti-tuberculosis medicine treatment was given for at least 2-3 weeks before operation.All patients with lumbosacropelvic fixation were compared by recording with ESR/CRP,preoperatively,postoperatively and the last following-up.The clinical effect oswestry disability index (ODI) score,visual analogue scale (VAS),ambulatory status,SF-36 scale and related complications of 2 groups were also compared.Results The average follow-up period was average 23.4 months in the two groups.The results show that operative time,blood loss,drainage time,hospitalization days and fusion time were not statistically significant;the recording of ESR,CRP,ODI,VAS scores and ambulatory status scores between S2AI and IS groups showed no significantly different,preoperatively,postoperatively and the last following-up.Comparisons within each group were improved at postoperatively and the last following-up related to preoperatively;The difference of the SF-36 scales in each group was statistically significant between preoperatively and the last following-up;There was no statistically difference in recurrence,sinus,pseudarthrosis between two groups,but The S2AI technique was associated with lower rates of symptomatic screw prominence compared to the IS technique.Conclusion Application of S2AI screw technique in the treatment of lumbosacral tuberculosis can achieve solid fixation and satisfactory clinical effect,and reduce the complications of traditional IS screws,which is an alternative method of posterior structure reconstruction of lumbosacral tuberculosis.
2.Glucuronidation is the dominating in-vivo metabolism pathway of herbacetin:elucidation of herbacetin pharmacokinetics after intravenous and oral administration in rats
GE BEI-KANG ; ZHAO LIANG ; QI TE ; XU PING-XIANG ; XUE MING
Chinese Journal of Pharmacology and Toxicology 2017;31(10):1019-1019
OBJECTIVE To map a comprehensive metabolic pathway of herbacetin in rats, specifically, to elucidate the biotransformation of herbacetin in vivo and to simultaneously monitor the pharmacokinetic process of both parent drug and its major metabolites. METHODS liquid chromatography/ion trap mass spectrometry (LC/MSn) and ultra-liquid chromatography coupled with mass spectrometry (UPLC/MS) were combined in the current study for qualitative and quantitative determinations of herbacetin and its metabolites in bile, urine and feces after both oral and intravenous administration of herbacetin to rats. Enzyme kinetic studies on the intestinal and hepatic metabolism of herbacetin were further conducted to elucidate metabolic profiles of herbacetin in rat tissues and organs. Additionally, plasma concentration profiles of herbacetin and its metabolites in rats were obtained to characterize the overall pharmacokinetic behavior of herbacetin. RESULTS It was found that herbacetin was excreted primarily from rat urine in the form of glucuronide-conjugations. Subsequent in vitro enzyme kinetic studies and in vivo pharmacokinetic investigations suggested an extensive hepatic metabolism of herbacetin and the high exposure of herbacetin- glucuronides in systemic circulation. The clearance, half- life and bioavailability of herbacetin in rats were determined as (16.4±1.92)mL·kg-1·min-1, (11.9±2.7)min, and 1.32%, respectively. On basis of these findings, a comprehensive metabolic pathway of herbacetin in rats was composed. In addition, a physiology based pharmacokinetic (PBPK) model was successfully developed with the aid of the GastroPlus to simulate the pharmacokinetic process of herbacetin in rats. Application of the PBPK modeling can provide a useful starting point to understand and extrapolate pharmacokinetic parameters among different species, populations, and disease states. CONCLUSION After oral administration, herbacetin was subjected to colonic degradation and extensive first pass metabolism, with glucuronidation as its dominating in vivo metabolic pathway.
3.Mechanistic study on the pharmacokinetic process of salidroside in hypoxic rats
QI TE ; GE BEI-KANG ; ZHAO LIANG ; XU PING-XIANG ; XUE MING
Chinese Journal of Pharmacology and Toxicology 2017;31(10):996-997
OBJECTIVE To investigate the effect of hypoxia on the pharmacokinetic process of salidrosidein rats and to explore its underlying mechanisms. METHODS The Caco-2 cell monolayerwas exposed to 1% oxygen (O2) concentration for 24 h to build the hypoxiccell model. The transportation mode of salidroside was investigated with the aid of this hypoxia model by detecting the apparent permeability coefficient(Papp). Healthy Sprague Dawley (SD) rats were exposed to 9% O2 for 72 h for the construction of hypoxic rat model. Liver sample was subsequently collected from the hypoxic rats with an aim to identify enzymes responsible for salidroside metabolism. The expression levels of sali?droside-transporting and salidroside-metabolizing enzymes, including Sodium-dependent glucose cotrans?porters (SGLT1), β-glucosidase (GBA3)and sulfotransferase (SULT2A1), were thereafter detected by RT-PCR and Western blot. The metabolic activity of GBA3 and SULT2A1 was monitored by rat liver microsome incubation.In addition, the renal function of rats under hypoxia was assessed by detecting concentrations of blood urea nitrogen and creatinine. RESULTS The AUC and t1/2 values of salidroside in hypoxic rats were more than doubled, while the in vivo clearance was significantly reduced. Mechanistic study demonstrated that the PappA- B/PappB- A eualsto 10.3, indicating the potential active transport of salidrosile. The expression of SGLT1 and GBA3 was significantly decreased, which indicated a reduced metabolism of salidroside under hypoxia. Moreover, rat under hypoxia was found to suffer from renal dysfunction, with an abnormal value of blood urea nitrogen. CONCLUSION Due to the reduced metabolism and the abnormal renal function under hypoxia, the systemic exposure of salidroside in rats was signifi?cantly enhanced.
4.Retrovirus-mediated cellular repressor of E1A-stimulated genes inhibits neointima formation in the rat carotid artery after balloon injury
Yaling HAN ; Jie DENG ; Ming LIANG ; Jian KANG ; Haiwei LIU ; Hongmei XU ; Chenghui YAN
Chinese Journal of Pathophysiology 2000;0(10):-
AIM: To evaluate the effects of over-expression of cellular repressor of E1A-stimulated genes(CREG) mediated by retrovirus on neointima formation in injured rat carotid.METHODS: The pluronic F127 containing pLNCX/CREG or pLNCX/GFP retroviral vectors was placed around the injured rat carotid.The neointima,media areas and the intima to media ratio were calculated.Expressions of CREG,SM ?-actin and Ki-67 were detected.RESULTS: The GFP expression was observed at day 2 in pLNCX/GFP groups.The expression of exogenous CREG was also significantly increased in arteries at day 2 after pLNCX-CREG infection.Over-expression of CREG significantly suppressed neointima formation,attenuated the expression of Ki-67 and up-regulated SM ?-actin expression.CONCLUSION: Over-expression of CREG inhibits VSMCs proliferation and promotes VSMCs differentiation after vascular injury.It suggests that modulation of CREG expression or activity may be a viable approach to treat neointimal restenosis after percutaneous coronary intervention.
5.Correlation between de nove anti-endothelial cell antibodies and postoperative adverse events after renal transplantation
Shuxin LI ; Kang WU ; Qing YUAN ; Xing WEI ; Liang XU ; Dawei ZHANG ; Xiang LI ; Ming CAI
Chinese Journal of Organ Transplantation 2017;38(5):282-286
Objective To investigate the correlation between de nove anti-endothelial cell antibodies (AECA) and adverse events after renal transplantation and the effect of transplanted renal function within six months after operation.Methods The expression of AECA in serum of 85 renal transplant recipients was detected by indirect immunofluorescence assay (ⅡF) before and 1 day,3 days,7 days,15 days and 1 month after renal transplantation.The patients were divided into double positive group (AECA positive before and after surgery),single positive group (postoperative de nove AECA positive) and negative group (preoperative and postoperative AECA negative) according to AECA test results.The occurrence of adverse events in each group such as DGF,rejection,infection and so on,as well as the serum creatinine levels were recorded at each time point within six months.Results Of the 85 recipients,29 were positive for AECA,including 19 in the double positive group,10 in the single positive group,and 56 in the negative group.The incidence of rejection in single positive group (30%) was higher than that in the rest two groups (5.3% for double positive group,and 17.9% for negative group),but there was no statistically significant difference (P =0.21).The incidence of DGF in the single positive group,double positive group and negative group was 70.0%,26.3 % and 32.1 % respectively.The positive rate of the single positive group was significantly higher than that of the rest two groups (P =0.04),and the duration of DGF was significantly longer in the single positive group than that of the rest two groups (P<0.01).The incidence of infection in the single positive group,double positive group and negative group was 20.0%,21.1% and 8.9%respectively,and there was no significant difference among the three groups (P =0.31).As compared with the double positive group and the negative group,the serum creatinine level was significantly increased in the single positive group at 1st week,1st month,3rd month and 6th month after operation (P =0.02,P =0.04,P =0.04 and P =0.02 respectively).Conclusion Postoperative AECA can increase the risk of DGF,prolong the duration of DGF,and affect the recovery of renal function within 6 months after renal transplantation.
6.Abnormal trigeminocervical response in patients with spinal and bulbar muscular atrophy
Ming Lu ; Ying-Sheng Xu ; Ju-Yang Zheng ; Shuo Zhang ; De-Xuan Kang ; Dong-Sheng Fan
Neurology Asia 2012;17(3):209-212
Objective: To investigate the value of the trigeminocervical response (TCR) for revealing bulbar
involvement in patients with spinal and bulbar muscular atrophy (SBMA). Methods: Thirty patients
with SBMA and 30 healthy male controls were included in this study. In all of the normal controls,
stimulation of the infraorbital nerve on one side produced bilateral short latency waves consisting
of a positive/negative wave, p19/n31, the mean latency of which was measured. The mean square
root of the ratio between the amplitude of p19/n31 and the mean rectifi ed surface electromyography
(EMG) activity preceding the stimulus, the A value, was estimated. The parameters of the TCR
were compared between the two groups. Results: Among the patients with SBMA, 21 (70.0%) had
delayed latencies of p19/n31 (P < 0.01) and all (100%) had reduced A values (P < 0.01) relative to
the normal controls.
Conclusions: All parameters of the TCR were signifi cantly different between the patients with SBMA
and the normal controls. T
7.Nutritional risk screening and nutritional assessment: definition, clinical practice, and possible pitfalls
Jian YANG ; Ming ZHANG ; Zhuming JIANG ; Kang YU ; Weigang ZHAO ; Qian LU ; Mingwei ZHU ; Jingyong XU ; Minjie ZENG ; Hongxia XU
Chinese Journal of Clinical Nutrition 2017;25(1):59-64
Nutritional support therapy includes three main components:nutritional screening,nutritional assessment,and nutritional intervention.It is important to emphasize that nutritional screening and nutritional assessment are two different concepts and definitions,which are often confusing for many physicians,nurses,and dietitians.In this review,we present an overview on the main concepts about nutritional screening and nutritional assessment,highlight their features and complementarity,and discuss the future perspectives in the clinical practice.
9.Construction of a new alcoholic liver disease mouse model
Dongdong HUANG ; Lulu WO ; Xin RUAN ; Yaqian XU ; Yiming GONG ; Linxi YANG ; Xuechuan LI ; Yuening KANG ; Ming HE
Journal of Shanghai Jiaotong University(Medical Science) 2017;37(7):906-913
Objective·To establish a reliable alcoholic liver disease mouse model (ALDNM) that mimics the drinking pattern of alcoholic liver disease (ALD) patients.Methods·Using the self-designed feeding tubes and liquid diet,ALDNM model was developed through chronic feeding combined with acute gavage of ethanol based on Lieber-DeCarli model and Gao-Binge model.C57BL/6 mice were administered with control liquid diet for adaptation for first 5 d,and then divided into pair-fed group and ethanol-fed group (10 mice each group).Ethanol-fed mice were fed with the liquid diet in which ethanol accounts for 30% of total energy,while the pair-fed mice were fed with the control diet for 10 d.At the 16th day,ethanol-fed mice and pair-fed mice were respectively gavaged a single dose of 31.5% ethanol or isocaloric maltose dextrin,and euthanized 9 h later.Sera and livers were collected.The general physiological condition,hepatic tissue pathological changes and serum indexes between Lieber-DeCarli models and ALDNM models were compared.The liver lipids of ALDNM mice were determined by Oil red O (ORO) staining and hepatic triacylglyceride (TAG) test.Meanwhile,the mRNA levels of interleukin-6 (IL-6),tumor necrosis factor α (TNF-α),fatty acid synthase (Fas),long chain fatty acid elongase 6 (Elovl6) and stearyl-CoA desaturase (Scdl) were detected by real-time PCR in ALDNM models.Western blotting was used to detect the changes of phosphorylated signal transduction and transcriptional activator (p-STAT3) in the livers.Results·Lieber-DeCarli model mice were generally in poor condition,and there was no significant change in serum glutamic-pyruvic transaminase (GPT) and glutamic-oxaloacetic transaminase (GOT) compared to pair-fed group.However,in ALDNM models,H-E staining showed that the hepatocytes of ethanol-fed mice were extremely swollen with round volume,increased cytoplasm and filled with large amounts of fat vacuoles.ORO staining analyses showed obvious microsteatosis in the liver cells from all ethanol-fed mice.The hepatosomatic index,liver TAG content,serum GPT and GOT of ALDNM models were significantly higher than those in the pair-fed group,while the serum HDL significantly decreased compared to the pair-fed group.Moreover,the expression levels of both lipid synthesis pathways and inflammatory signaling pathways related genes in livers significantly increased in the ethanol-fed mice of ALDNM model.Conclusion·ALDNM model was successfully constructed.This model is cost-and time-efficient.Moreover,ALDNM model mimics the drinking pattern and pathogenesis of ALD patients with the advantages of stable food intake,good repeatability,and obvious liver damage.
10.Intervention of Amifostine for benzene-induced blood toxicity in mice.
Xing-zhou REN ; Kang YU ; Kai-yan YANG ; Jian-bo WU ; Xu-dong HU ; Ming-shan WANG
Chinese Journal of Industrial Hygiene and Occupational Diseases 2006;24(10):614-616
Amifostine
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pharmacology
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Animals
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Benzene
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toxicity
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Blood
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drug effects
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Blood Cell Count
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Male
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Mice
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Random Allocation