1.An experimental study on osseo-induction and biodegradation performances of three types of injectable and degradable calcium phosphate cement
Bo BAI ; Xian-Pei WU ; Qian XU ;
Chinese Journal of Orthopaedic Trauma 2004;0(06):-
Objective To compare the osseo-induction and biodegradation performances of three types of injectable and degradable calcium phosphate cement (CPC) so as to find out a better bone substitute. Methods Three types of injectable and degradable CPC were respectively implanted into the bilateral tibias of 24 New Zealand rabbits: pure CPC (Group A), CPC added with Zinc and Strontiumions (Group B), and CPC with composite rhBMP-2 (Group C) . Their systematic and local reactions in implanted region were closely observed. The degra- dation and osseo-induction performances were compared macroscopically, microscopically and by CT scan to find out the one that could best meet clinical needs. Tissue slices were sampled and photographed four, eight and 16 weeks after operation. Five photographs were selected in each group and at each time points for computer software (Image Pro Plus 5.1) processing to calculate the percentages of bone in the images of postoperative slices. Results In Groups A and B, new bone was found to form slowly and little by little, and the ossification was not synchronous with the material degradation. In Group C, however, new bone was observed to form early and massively, and the os- sification was almost synchronous with the material degradation. In Groups A, B and C, the percentage of bone in the images of postoperative slices was (41.7?16.6)%, (31. 2?12.2)% and (71.7?21.0)% respectively. The bone percentage in CPC with composite rhBMP-2 was significantly higher than that in the other two types of CPC (P<0.01 ). Conclusion The injectable and degradable CPC with composite rhBMP-2 is more suitable for clinical use, because it can induce early new bone formation and synchronous biodegradation.
2.Therapeutic Effect of Atomoxtine in Attention Deficit Hyperactivity Disorder with Comorbidity
qian-bo, CHEN ; yi, ZHOU ; tong, XU
Journal of Applied Clinical Pediatrics 2004;0(12):-
Atomoxetine is a noradrenaline transmitter reuptake inhibitor which can selectively inhibit presynaptic noradrenaline transport protein,strengthen noradrenaline's resupination effect,and increases noradrenaline's activity released by synaptic cleft to improve the symptoms of the attention deficit hyperactivity disorder(ADHD)patients.ADHD patients often accompany with other psychological diseases like oppositional defiant disorder,anxiety disorder,which may hinder the diagnosis of ADHD.There is still no accepted effective medicine nowadays.Currently,research on the treatment of the ADHD is more and more popular.Good therapeutic effect of atomoxetine to treat ADHD has been found in resent studies.This article summarized the current management of using atomoxetine to treat ADHD.
3.Effect-site concentration of sufentanil blunting responses to tracheal intubation with video laryngoscope during propofol TCI
Weidong SHAO ; Bo HU ; Xingan ZHANG ; Chuanmu QIAN ; Bo XU
The Journal of Practical Medicine 2014;(12):1979-1981
Objective To deter mine the effect-site concentration of sufentanil blunting responses to tracheal intubation with video laryngoscope during propofol target controlled infusion (TCI). Methods Twenty-three patients undergoing selective surgery under general anesthesia were enrolled in this study. Induction of anesthesia was initiated by TCI sufentanil at the target effect-site concentration 3 min later , TCI of propofol began at the target plasma concentration of 3 μg/mL. Cisatracurium 0.15 mg/kg was ad ministrated for video laryngoscope tracheal intubation after loss of consciousness. The target concentration of sufentanil for consecutive patients was deter mined using the modified Dixon′s up-and-down method by the intubation response of the previous patient , in an increment or decrement of 0.05 ng/mL. The initial concentration was set at 0.4 ng/mL. Results The EC50 of Sufentanil was 0.32 ng/mL with 95%confidence interval of 0.29~0.35 ng/mL; the EC95 was 0.38 ng/mL with 95%confidence interval 0.35-0.55 ng/mL during video laryngoscope tracheal intubation. Conclusion The EC50 and EC95of sufentanil blunting responses to tracheal intubation with video laryngoscope are 0.32 ng/mL and 0.38 ng/mL during propofol TCI.
4.Correlation study of Narcotrend values and patient-controlled sedation of dexmedetomidine under CSEA
Xingan ZHANG ; Chuanmu QIAN ; Weidong SHAO ; Bo XU ; Weifeng TU
The Journal of Practical Medicine 2014;(23):3716-3719
Objective To explore the correlation of patient-controlled sedation of dexmedetomidine and Narcotrend values. Methods Forty patients with lower limb surgery were enrolled. Until CSEA block fixed , the electronic pump ran the patient-controlled sedation of dexmedetomidine. The parameter of electronic pump was set as follows: load dose 2 mL + background dose 1.5 mL/h + single dose 0.5 mL + locktime 20 s. The heart rate , mean arterial pressure, pressing times, effective times, OAA/S sedation scores and NI values were determined. Results At T4 point, the patients reached appropriate sedation. At T4 ~ T9 OAA/S scores kept 3 to 4. From T5 point, NI values showed significant decrease. After the T7 point. OAA/S scores and NI values reached the plateau time of (7.5 ± 1.8) min and (13.1 ± 3.4) min, OAA/S scores of 1, 2, 3, 4, respectively, corresponding roughly with NI values 95 to 100, 90 to 94, 65 to 89, 40 to 64. The correlation coefficient was 0.58. The time of NI values significant decreased in the younger group and in the elderly group, with (10.2 ± 1.6) min and (14.4 ± 2.2) min. In T5~ T9 point, NI values of the younger group were significantly lower than those in the elderly group. Conclusion Relevant relationships are observed between dexmedetomidine patient-controlled sedation depth and the narcotrend values under CSEA.
6.Effects of spectral domain optic coherence tomography in monitoring glaucomatous progression of POAG
Jun, ZHAO ; Ling, LUO ; Qian-Qian, XU ; Hong-Wei, ZHAO ; Yu-Bo, GONG
International Eye Science 2017;17(10):1939-1941
AIM: To evaluate the ability of spectral domain optic coherence tomography ( SD-OCT ) parameters to detect progressive structural damage in primary open angle glaucoma ( POAG) by contrasting with visual field. ·METHODS: Retrospectively we evaluated 48 subjects (48 eyes ) of POAG, followed up 14 to 62mo. The parameters of SD-OCT and visual field were obtained. The correlation between the change of visual field measurements and OCT measurements were analyzed. Visual field progression was defined as reproducible drop of at least 2dB of mean deviation (MD) from the baseline visit. ROC curve was made to evaluated the ability of OCT parameters in detect progression of POAG. ·RESULTS: The 25 eyes were classified in progression group and 23 eyes were in non-progression group. No significant correlation was seen between OCT parameters and visual field in non-progression group. In progression group, OCT parameters which were significantly correlated with MD reduce were rim volume ( r=-0. 5997, P=0. 0007), C/D vertical ratio (r=-0. 6309, P=0. 0003), RNFL(r= 0. 4201, P= 0. 0260), and GCC(r= 0. 7080,P<0. 01). ROC curves showed the GCC reflected the reduce of MD accurately (P=0. 013). ·CONCLUSION: Part parameters of SD-OCT can reflect the progression of POAG accurately and provided a new method to detect the damage of visual function of POAG.
7.Mechanism of liver and lung injury in septic mice
Chuan-Bo ZANG ; Rong-Qian WU ; Xu-Hua SONG ; Ying-Xin XU ; Rong LI ;
Academic Journal of Second Military Medical University 1985;0(06):-
Objective:To investigate the mechanism of liver and lung injury in mouse septic models.Methods:Twenty-four male Kunming mice were subjected to cecal ligation and puncture(CLP)or sham operation.The permeability of microvasculature,water contents,activities of myeloperoxidase(MPO)and the apoptosis of microvascular endothelial cells in lung microvasculature and liver sinus were examined 3 h and 12 h after operation.Results:Both the liver and lung showed a significant increase in microvessel permeability at 12 h in CLP group compared with sham operation group.MPO activity and water content in CLP group were obviously higher than those in the sham operation group.The apoptosis of lung microvascular endothelial cells at 12 h in CLP group(5.03?0.92)% was significantly higher than that of control group(3.48?1.21)%(P
8.The suppression of IL-24 on pancreatic cancer mediated by tumor-targeting oncolytic adenovirus in immune-competent mice
Bin XU ; Mingping QIAN ; Tingsong YANG ; Zhenshun SONG ; Xinyuan LIU ; Bo ZHOU
Chinese Journal of Hepatobiliary Surgery 2014;20(6):457-460
Objective To investigate whether IL-24 can inhibit the growth of pancreatic cancer in immune-competent mice,which could be mediated by tumor-targeting oncolytic adenovirus (ZD55-IL-24).Methods Crystal violet staining assay was used to evaluate the anti-proliferative influence of ZD55-IL-24 on Panc02.The tumor growth curve,the tumor formation curve,TUNEL assay,cytotoxic T lymphocyte (CTL) killing assay and serum cytokines detection were used to assess anti-tumor efficacy of ZD55-IL-24 for pancreatic cancer in immune-competent mice.Results ZD55-IL-24 significantly inhibited the growth of pancreatic cancer cells in vitro.Lower tumor formation and slower tumor growth were identified in ZD55-IL-24 group,compared with ZD55-EGFP group or PBS group.ZD55-IL-24 induced pancreatic cancer cells'apoptosis,and mediated anti-cancer immunity by increasing killing responses of CTL to cancer cells and up-regulating serum γ-IFN and IL-6 levels.Conclusion ZD55-IL-24 can induce anti-tumor immunity and suppress pancreatic cancer growth in immune-competent mice.
9.Clinical efficacy of renal artery stent as treatment for atherosclerotic renal artery stenosis in elderly patients
Qian YANG ; Xiongjing JIANG ; Yuejin YANG ; Haiying WU ; Huimin ZHANG ; Rutai HUI ; Bo XU ; Runlin GAO
Chinese Journal of Geriatrics 2009;28(5):366-370
Objective To evaluate the safety and clinical efficacy of renal artery stent treatment for severe atherosclerotic renal artery stenosis (ARAS) in the elderly. Methods In a prospective nonrandomized study in our hospital from January 2003 to April 2008, 147 consecutive elderly patients with ARAS (diameter reduction ≥ 65%) underwent percutaneous transluminal renal angioplasty and stenting (PTRAS) for resistant hypertension or reserving renal function. They were followed up for 6- 66 months and the effects of the procedure on renal function, blood pressure and cardiovascular events were observed. Results The success rate of PTRAS was 100%. During 6-66 months of follow up, both systolic and diastolic blood pressure were significantly decreased, and less antihypertensive medication was taken (P<0.01). Serum creatinine was significantly decreased during 6-48 months of follow up (P<0. 05) and did not change significantly during 54-66 months of follow up (P>0. 05). Blood urea nitrogen was significantly decreased during 6-24 months of follow up (P<0.05) and did not change significantly during 30-66 months of follow up (P>0.05). Complications related with the procedure occurred in 7 cases (4.8%). 17 patients failed to follow up (11.6%) and in 18 cases cardiovascular events occurred (12.2%), including 4 cases of renal events (2. 7%), 4 cases of myocardial infarction (2.7%), 2 cases of stroke (1.4%) and 8 cases of cerebral and cardiovascular events (5.4%) during 6-66 months of follow up. The survival rates of free-of-events at year 1, 2, 3, 4 and5 were 91.0%(121/133), 90.2%(83/92), 78.5%(51/65), 73.8%(31/42) and 54.8%(17/ 31), respectively. The survival rates at year 1, 2, 3, 4 and 5 were 94.0% (125/133), 90. 2% (83/ 92), 84.6%(55/65), 73. 8%(31/42) and 61.3%(19/31), respectively. Conclusions Renal artery stent as treatment for ARAS in the elderly has a beneficial effect on blood pressure control and on renal function during middle and long term follow up. The treatment may be helpful in reduction of cardiovascular events and mortality, which should be investigated further.
10.Contrucion of Salvia miltorrhiza Protein/Peptide Database for Mass Spectrometry Analysis
Haibin XU ; Jingyuan SONG ; Jun QIAN ; Bo WANG ; Lifang XIE ; Hongmei LUO
World Science and Technology-Modernization of Traditional Chinese Medicine 2013;(3):339-341
Salvia miltorrhiza Bge is a medicinal herb in traditional Chinese medicines. Until recently, dozens of compound ingredients with medicinal properties have been identified from S. miltorrhiza. Proteome analysis on medicinal ingredients synthesis mechanisms could provide a theoretical basis for S. miltorrhiza genetic improve-ment. In this study, a S. miltorrhiza specific protein/peptide sequence database was constructed using Illumina high-throughput transcriptome sequencing data of multiple types of S. miltorrhiza tissues. The database could act as a key component to carry out the proteome analysis in S. miltorrhiza.