4.Effects of different concentrations of lauromacrogol intravenous injection on thrombosis and vascular wall
Ke CHEN ; Shihai CHEN ; Haisheng YU ; Hebin QI
Chinese Journal of Medical Aesthetics and Cosmetology 2012;18(3):190-192
Objective To investigate the effects of different concentrations of lauromacrogol intravenous injection on the thrombosis and vascular walls through the animal experiment.Methods Thirty ear marginal veins of rabbits whose weight ranged from 2.5 kg to 3.0 kg and whose sex was not limited were divided randomly into six groups:1.0 % lauromacrogol group,0.9 % lauromacrogol group,0.8 % lauromacrogol group,0.7 % lauromacrogol group,0.6 % lauromacrogol group and normal saline group.The local veins and their side tissue were cut off for samples for HE staining and VEGF expression detected by immunohistochemistry at the first day,third day,fifth day and seventh day after injection.Results Visual observation and HE staining showed that 1.0 % lauromacrogol group,0.9 % lauromacrogol group,0.8 % lauromacrogol group and 0.7 % lauromacrogol group had thrombosis in veins after injection,0.6 % lauromacrogol group and normal saline group did not have thrombosis in veins after injection.The score of VEGF expression showed that 1.0 % lauromacrogol group,0.9 % lauromacrogol group,0.8 % lauromacrogol group and 0.7 % lauromacrogol group did not have statistically significant differences between groups and different time point (P> 0.05) and there were statistically significant differences between 0.6 % lauromacrogol group and other four groups (P<0.05) in each time point.Conclusions From these animal experiments lauromacrogol shows the effect of vascular injury and thrombosis,eventually leading to the injected vein disappeared in 0.7 % lauromacrogol group.
7.INFLUENCE OF HEAT STRESS ON AMPK ACTIVITY AND LIPID METABOLITES OF
Ping ZHENG ; Dai-Wen CHEN ; Ke-Ying ZHANG ; Bing YU ;
Acta Nutrimenta Sinica 1956;0(01):-
Objective: To study the influence of high cell incubating temperature on AMP-activated protein kinase(AMPK) activity and lipid metabolites of piglets hepatocytes in vitro.Method: Primary hepatocytes of piglets about age 55d were separated and cultured under 37 ℃(control) or 42 ℃(heat stress).The anabolic and catabolic products of [14C]-oleic acid were detected for hepatocytes and culture media at 60min,120min and 180min.There were 9 replicates per time point.Result: Heat stress activated AMPK activity and enhanced fatty acid oxidation.The production of [14C]-CO2 and [14C]-acid soluble metabolites(ASM) was higher in heat stress group than in the control.At the same time,heat stress depressed the incorporation of [14C]-oleate into phospholipids,monoglycerides,triglycerides,cholesterol and cholesteryl ester.Conclusion: Heat stress activated AMPK activity and enhanced the formation of anabolic products and depressed catabolic products in piglets hepatocytes in vitro.
8.A clinical study of low frequency electric stimulation on the patients with vertebrobasUar insufficiency
Xue-Yuan LIU ; Jing HUANG ; Ke LIU ; Yu-Juan CHEN ;
Chinese Journal of Physical Medicine and Rehabilitation 2003;0(06):-
Objective To explore the effects of low frequency electric stimulation on the clinical manifes- tation and its influence on the level of plasma Endothelin (ET),atrial natriuretic peptide (ANP),thromboxane B_2 (TXB_2),angiotensinⅡ(AngⅡ),Calcitonin Gene Related Peptide(CGRP) and Neuron-specific Enolase(NSE) and its clinical significance in the patients with vertebrobasilar insufficiency(VBI). Methods One hundred and tewenty cases of VBI patients were randomly divided into two groups:a treatment group and a control group.Both groups received routine drug treatment.The treatment group (n=60) was also treated with low frequency electric stimulation at bilateral mastoid processfes in addition.The improved rate of the clinical symptom,the plasma level of ET,ANP,TXB_2,AngⅡ,GRP and NSE were observed after treatment. Results The patients treated in the treatment group had significantly better outcome than the control group in terms of symptom relief.The effective rate was 87.93% and 67.80% in the treatment group and control group,respectively(P
9.Anterior percutaneous endoscopic nerve root decompression for cervical spondylotic radiculopathy
Kexiao YU ; Liang CHEN ; Lei CHU ; Zhenyong KE ; Zhongliang DENG
Chinese Journal of Trauma 2015;31(10):873-876
Objective To evaluate the feasibility, safety, and clinical outcome in patients with cervical spondylotic radiculopathy underwent cervical nerve root decompression using the anterior percutaneous endoscopic surgery.Methods Eleven subjects consisting of 6 men and 5 women treated from July 2012 to December 2013 were enrolled in the study.Mean age was 42.1 years (range, 27 to 63 years).All were diagnosed to be unilateral single-segment injury involving C3/4 in 1 case, C4/5 in 2 cases, C5/6 in 6 cases and C6/7 in 2 cases.Because of unsatisfactory results 6 week following the non-operative treatment, the patients were operated on using the anterior percutaneous endoscopic osteophyte removal and nerve root decompression.Operation time, postoperative complications, visual analogue scale (VAS) and modified Macnab scale were recorded.Results Operation time was (102.5 ± 21.3) min (range, 80-140 min).Nine patients were followed up for 12 months and no complications were noted.VAS improved significantly at postoperative 3 days and 1, 3, 6, as well as 12 months compared to the preoperative value (P < 0.01).Modified Macnab scale presented great improvement at postoperative 3 and 12 months compared to the preoperative value (P < 0.01).Conclusion The technique is reliable and effective in treatment of cervical spondylotic radiculopathy.
10.Preliminary study for integrating DPRA with h-CLAT to predict skin sensitizers
Yihui KE ; Yu CHEN ; Shujun CHENG ; Jiating XU ; Weijun TAN
Acta Laboratorium Animalis Scientia Sinica 2016;24(6):611-617
Objective To establish a detection method integrating DPRA ( direct peptide reactivity assay) with h?CLAT ( human cell line activation test) to screen the skin sensitization potency of chemicals and plant extracts. Methods 12 chemicals and 7 plant extracts were chosen as the test substances. Firstly, the test substances were incubated together with two different peptides ( cysteine and lysine) respectively for reaction for 24 h. The peptide consumptions were analyzed by HPLC. Simultaneously, THP?1 cells were cultured in vitro and then exposed to different concentrations of test sub?stances for 24 h to examine the cell viability, cell surface markers CD54 and CD86 were assessed by flow cytometry. The predicting results were compared further between DPRA and h?CLAT. Results 12 chemicals were distinguished correctly by DPRA classified as 2 non?sensitizers and 10 sensitizers. The results of DPRA were in accordance with h?CLAT. Predic?ting the sensitization potency of plant extracts by DPRA showed that 6 plant extracts were determined as suspected sensiti?zers except for green tea extract. But using the method of h?CLAT, 4 plant extracts were examined as suspected sensitizers except for green tea extract, herba portulacae extract and ginseng fruit extract. The coherence of DPRA and h?CLAT was 0?57. Conclusion This detection method integrating DPRA with h?CLAT can predict single compound accurately. As for complex compound, it can achieve preliminary prediction and need other integrating methods to make a further identifica?tion.