Bacterial infection is likely to develop into sepsis, which is regarded as the main reason for high mortality rate. High-density lipoprotein cholesterol (HDL-C) and its associated apolipoprotein can combine with lipopolysaccharide, regulate the body's inflammatory response and reduce the mortality, which can provide a new method for treatment of bacterial infection.

A large quantity of mice McAb ascites with monoclonal antibody (McAb) hybridoma cells separated from mice ascites was prepared. Ascites of mice inoculated with McAb hybridoma cells were collected, and the McAb hybridoma cells were isolated by centrifugation with lymphocyte separating fluid. McAb hybridoma cells then were injected into other mice abdominal cavity to prepare ascites again. McAb hybridoma cells separated from a mouse could be injected into the abdominal cavity of 5 mice.　Each mouse could produce 3.97 ml ascites on average. This method could be used to prepare large quantity of high titer mice monoclonal anti-HBs/a ascites.

Because of the aggressive threaten of heat stroke and a lack of understanding of the mechanism of action, mammal animal models for experimental heat stroke were well developed. During the past 5 decades, anesthetized mouse, rat, rabbit, dog, baboon and monkey were used as animal model for experimental heat stroke. However, anesthetized mammals models have some limitations, such as neuroprotective effect of anesthetic agents, possible disturbance on injury and recovery of stroke animals by anesthetic agents, difficulty of discussing animal behavior before and after heat stroke, it was also difficult for the models to evaluate cognitive function of animal under hot environment. Considering humanitarian, only awaked and unrestrained mouse heat stroke model was accepted so far. Therefore, we also developed an awaked and unrestrained rat heat stroke model, and found it was helpful to evaluate drug effectiveness for animal behavior and cognitive function under hot environment.
Animals ; Cognition ; Disease Models, Animal ; Heat Stroke ; physiopathology ; Mice ; Rats

In this paper, we present a 3D virtual phantom design software, which was developed based on object-oriented programming methodology and dedicated to medical physics research. This software was named Magical Phan tom (MPhantom), which is composed of 3D visual builder module and virtual CT scanner. The users can conveniently construct any complex 3D phantom, and then export the phantom as DICOM 3.0 CT images. MPhantom is a user-friendly and powerful software for 3D phantom configuration, and has passed the real scene's application test. MPhantom will accelerate the Monte Carlo simulation for dose calculation in radiation therapy and X ray imaging reconstruction algorithm research.
Algorithms ; Humans ; Image Processing, Computer-Assisted ; Monte Carlo Method ; Phantoms, Imaging ; Software ; Software Design

Objective To explore the value of angiographic diagnosis and interventional therapy for Takayasu arteritis. Methods Thirty-eight patients with Takayasu Arteritis (TA)(11 men, 27 woman; aged 8-54; average age, 30.5?18) undergone angiography were analyzed retrospectively. The angiographic appearances in all of the patients were observed dynamically in a double blind method by two experienced radiologists together and formed a consensus interpretation. Results According to the classification of Lupi-Herrea, typeⅠwas found in 11 cases, typeⅡin 15, typeⅢin 7 and typeⅣin 5 by angiography. Among 38 patients the arterial involvement ineluded subclavian artery in 20 cases (52.6%), the abdominal aorta in 15 cases (39.5%), the renal artery in 14 cases (36.8%), thoracic aorta in 10 cases (26.3%), carotid artery in 9 cases (23.7%), iliac artery in 9 cases (23.7%), axillary artery in 7 cases (18.4%), superior mesenteric artery in 4 cases (10.5%), coronary artery in 3 cases (7.9%), pulmonary artery in 3 cases (7.9%), and so on. Percutaneous transluminal angioplasty was performed in 22 cases and the stent placement was managed in 12 cases successfully. Conclusions Angiography is one of the ideal and reliable methods for the diagnosis and guidance of the interventional treatment for TA, and the latter is a mini-invasive and effective way for TA.

Objective To evaluate the killing effects of oxymatrine(OM) on human colon cancer cell line SW1116 and the mechanism of its anti-neoplastic effect. Methods Methyl thiazolyl tetrazolium analysis, flow cytometry , polymerase chain reaction(PCR)-enzyme linked immunosorbent assay (ELISA) and RT-PCR were used to detect the killing effects of OM and its influence on cell cycle dis- tribution , telomerase activity, expressions of human telomerase reverse transcriptase (hTERT), c-myc ,p53 and mad1 genes in SW1116 cells. Results OM exhibited dose-dependent killing effects on SW1116 cells and induced the increase of G1/G0-phase cells and decrease of S-phase cells. It was found that OM could supress the telomerase activity of SW1116 cells, and the effects were dose- and time-dependent. After OM administration, the expression of hTERT gene in SW1116 cells was decreased, those of p53 and mad1 genes were increased, and the expression of c-myc gene had no marked changes. Conclusions OM has dose-dependent killing effects on SW1116 cells.The anti-neoplastic activity of OM might be due to the inhibition of telomerase activity by means of its influence on hTERT and the up-stream regulation genes.

BACKGROUND:The human body pulse signal can be regarded as the convolution of the heart excitation resource signal and the pulse transfer system. The backward signal was studied more before, but the research to the forward signal is not enough.OBJECTIVE: To extract the heart excitation source signals in human pulse wave.DESIGN: A randomized controlled design.SETTING: Second Affiliated Hospital of China Medical University;Biomedical Engineering institute of Shandong University.PARTICIPANTS: Health physical-examined persons in the Second Affiliated Hospital of China Medical University on March 11,2004 were recurited. RM6240 physiological signals collection system was adopted.METHODS: The collection of pulse wave in healthy persons was input into system-analysis mode and based on the principle of blind deconvolution and feasible arithmetic, heart source signals were obtained.MAIN OUTCOME MEASURES: ①Normal human pulse wave ②The heart excitation source signals.RESULTS: In the back-half segment of cepstrum (n＞ n0), periodic impulse was in accordance with the basic human pulse frequency. There was an excitation source in the pulse wave. If high-pass filter was defined to the signal (when n0 equals to 30 in the experimentation the result will be best.), we could get the heart excitation source signal after it was filtered, F transformation, index and inverse transformation.CONCLUSION: This method is practical and feasible and will provide a basis to further analyze pulse wave.

Objective:To investigate the relationship of etiology and complications of rhabdomyolysis with its prognosis in the elderly.Methods:Patients with rhabdomyolysis at the emergency department of our hospital from January 1, 2018 to December 31, 2019 were retrospectively analyzed.Based on age, patients were divided into the non-elderly group(<65 years old)and the elderly group(≥65 years old). The frequency distribution of etiological factors, concurrent acute kidney injury, and their association with prognosis were analyzed.Results:The number of patients with rhabdomyolysis caused by 2 or more etiologies was higher in the elderly group than in the non-elderly group(40.3% or 48/119 vs.17.0% or 16/94, χ2=13.582, P=0.000). The frequency distribution of etiological factors was different between the two groups.The top-five etiologies were infection, muscle ischemia/hypoxia, endocrine metabolic abnormalities, trauma and muscle fatigue in the elderly group and muscle fatigue, infection, endocrine metabolic abnormalities, drugs/toxicants and trauma in the non-elderly group.Compared with the non-elderly group, the elderly group had fewer patients with typical clinical manifestations(32.8% or 39/119 vs.48.9% or 46/94, χ2=5.067, P=0.024). In contrast, patients who newly presented with disturbance of consciousness were more likely to be found in the elderly group than in the non-elderly group(40.3% or 48/119 vs.21.3% or 20/94)( χ2=7.923, P=0.005). There were 37 patients with AKI(38.9% or 37/95)in the elderly group and 13 of them died(35.1%), and there were 17 patients with AKI in the non-elderly group(19.3% or 17/88)and 4 died(23.5%), indicating the elderly were prone to AKI( χ2=7.545, P=0.006). There was a significant correlation between AKI and prognosis in the non-elderly group( χ2=7.196, P=0.007). Conclusions:Rhabdomyolysis caused by multiple etiologies is more common in elderly patients than in non-elderly patients.The etiological classification of rhabdomyolysis in the elderly is different from that in the non-elderly.Elderly patients are less likely to have typical clinical manifestations and are more prone to AKI.Elderly patients with rhabdomyolysis combined with AKI have a poor prognosis.

OBJECTIVE:To observe clinical efficacy and safety of triptorelin acetate in the treatment of endometriosis after lap-aroscopy. METHODS:196 cases of endometriosis were randomly divided into experimental group and control group with 98 cases in each group according to admission sequence. Both groups received laparoscopic surgery. After surgery,experimental group was given triptorelin acetate by intramuscular injection,3.75 mg/time,every 4 weeks;control group was given gestrinone orally,2.5 mg/time,twice a week,for 5 months. The ovulation,menstrual recovery and the occurrence of ADR were observed in 2 groups. The endometriosis relapse of 2 groups were followed up for 1 year and observed. RESULTS:After treatment,the ovulation recov-ery time and menstrual recovery time of experimental group were all shorter than those of control group,with statistical signifi-cance(P<0.05). The incidence of ADR in experimental group(17.34%)was significantly lower than in control group(35.71%), with statistical significance(P<0.05). During follow-up period,the relapse rate of experimental group(7.14%)was significantly lower than that of control group(18.37%),with statistical significance(P<0.05). CONCLUSIONS:After laparoscopic surgery, triptorelin acetate can significantly improve therapeutic efficacy of endometriosis,reduce the occurrence of ADR.

Informed consent is the important thesis in life ethics and life law,which gives the patients and experimenters the right of self-decision making on medical procedures and experiments.As the development of public health and public health ethics,informed consent has been paid more attention,especially on informed consent problems in epidemiology and public health practice.The requirement of informed consent varies in different research fields.According to different practice purposes,the researchers choose relevant applicable methods.