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.
6.Epidemiological characteristics of pulmonary tuberculosis among the elderly population at ages of 65 years and older in Yangzhou City
CHEN Ke ; LI Jincheng ; YU Hao ; ZHU Limei ; LIU Qiao
Journal of Preventive Medicine 2023;35(10):877-880
Objective:
To investigate the epidemiological characteristics of pulmonary tuberculosis (PTB) among the elderly at ages of 65 years and older in Yangzhou City, Jiangsu Province from 2017 to 2021, so as to provide the evidence for the development of PTB prevention and control measures in the elderly.
Methods:
Data of PTB cases at ages of 65 years and older in Yangzhou City from 2017 to 2021 were collected from the Tuberculosis Management Information System of the Chinese Disease Control and Prevention Information System, including age, gender, current address, population classification and diagnosis classification. Descriptive epidemiological methods were used to analyze the temporal distribution, regional distribution, population distribution and delay in healthcare-seeking of PTB cases.
Results:
A total of 3 283 PTB patients at ages of 65 years and older were registered in Yangzhou City from 2017 to 2021, accounting for 41.12% of the total number of PTB cases. The incidence decreased from 112.10/105 to 66.03/105 (P<0.05), with an average annual incidence of 80.43/105. There were 1 236 cases of PTB cases from April to July, accounting for 37.65%. Guangling District had the highest annual incidence of 96.45/105, followed by Hanjiang District (89.29/105) and Jiangdu district (87.05/105). The average annual incidence of PTB in males was 134.07/105, which was higher than that in females (30.55/105, P<0.05). There were 1 070 cases of PTB cases at ages of 65-69 years, accounting for 32.59%. The highest incidence was seen in men at ages of 85 years and older (200.39/105) and in women at ages of 80-84 years (38.34/105). Farmers were the predominant occupation of PTB cases (2 488 cases, 75.78%). There were 2 365 cases of PTB with delay in healthcare-seeking, accounting for 72.04%.
Conclusions
The incidence of PTB in the elderly at ages of 65 years and older in Yangzhou City showed an overall downward trend from 2017 to 2021, peaked from April to July, and was higher in Guangling District, Hanjiang District and Jiangdu District. Males and farmers had higher risks of PTB.
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.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.
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.O-POSSUM and P-POSSUM for evaluation of operative risk of aged patients in orthopedic department
Jiang YU ; Siyu WU ; Ke JIANG ; Liang CHEN ; Aimin WANG
Chinese Journal of Trauma 2014;30(10):1023-1027
Objective To retrospectively review the mortality and morbidity after orthopedic surgery for aged patients with reference to orthopedic version physiological and operative severity score for the enumeration of mortality and morbidity (O-POSSUM) and Portsmouth POSSUM (P-POSSUM) and validate the score' s accuracy in operative risk prediction.Methods O-POSSUM and P-POSSUM for mortality and morbidity were applied to 839 aged patients who had undergone orthopedic surgery between January 2008 and December 2011.Observed mortality and morbidity were compared with the expected values.Results O-POSSUM predicted 230 morbidities,but the observed value was 182 (x2 =2.718,P > 0.05).O-POSSUM predicted 46 deaths,higher than the observed 3 deaths (x2 =38.870,P<0.01).P-POSSUM predicted 16 deaths,higher than the observed 3 deaths (x2 =8.997,P < 0.01).Conclusions O-POSSUM accurately predicts postoperative morbidity in aged orthopedic patients.However,O-POSSUM and P-POSSUM overpredicts the mortality and should be used with caution.