1.Estimation of postmortal interval by measuring the amount of DNA in cells.
Xin CHEN ; Yi-wen SHEN ; Zi-qing ZHAO
Journal of Forensic Medicine 2003;19(2):120-121
Although there are many methods to estimate the early postmortal interval, more attention has been paid to the research on measuring the amount of DNA in cells. This paper introduce several different measuring ways, law of variation and application situation of DNA in cells. In addition, the result evaluation of measuring methods and application prospect is given.
DNA/analysis*
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Flow Cytometry
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Forensic Medicine
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Humans
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Kidney/chemistry*
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Liver/chemistry*
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Myocardium/chemistry*
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Postmortem Changes
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Time Factors
2.Not Available.
Jian yi CHEN ; Fang HUANG ; Zi hao LIU ; Qing SHI ; Yi wu ZHOU
Journal of Forensic Medicine 2022;38(4):557-559
4.Advances on pharmacokinetics of traditional Chinese medicine under disease states.
Zi-peng GONG ; Ying CHEN ; Rui-jie ZHANG ; Qing YANG ; Xiao-xin ZHU
China Journal of Chinese Materia Medica 2015;40(2):169-173
In recent years, more and more research shows that the pharmacokinetic parameter of traditional Chinese medicine can be affected by the disease states. It's possible that drug metabolic enzymes, transporters, cell membrane permeability and the change of microbes group could be interfered with physiological and pathological changes, which enables the pharmacokinetics of traditional Chinese medicine in the body to be altered, including the process of absorption, distribution, metabolism and excretion, and then the pharmacokinetic parameters of traditional chinese medicine are altered. It's found that investigating the pharmacokinetic of traditional Chinese medicine in the pathological state is more useful than that of in normal state because the great part of traditional Chinese medicine is mainly used to treat disease. This article reflects the latest research on the pharmacokinetic of traditional Chinese medicine in the disease state such as diabete, cerebral ischemia, liver injury, inflammatory disease, nervous system disorders and fever in order to provide certain reference for clinicians designing reasonable administration dose.
Animals
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Brain Ischemia
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drug therapy
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Chemical and Drug Induced Liver Injury
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drug therapy
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Humans
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Inflammation
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drug therapy
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Medicine, Chinese Traditional
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Nervous System Diseases
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drug therapy
5.Sinus Heart Rate Turbulence and Heart Rate Variability in Patients with Essential Hypertension
Qing-Ping CHEN ; Zi-Qian DENG ; Ning HUANG ; Feng-Ling ZHANG ;
Chinese Journal of Hypertension 2006;0(12):-
Objective To evaluate the clinical significance of sinus heart rate turbulence(HRT)and the heart rate variability(HRV)in the patients with essential hypertension(EH).Methods HRV and HRT examination were carried out in sixty patients with EH.A subgroup of patients receive metoprolol+nifedipine(n=26)or nife- dipine alone(n=34)were investigated seperately to evaluate the effect of ?-blocker on the HRV and HRT.Fifty healthy persons were served as control.In the HRT determination,turbulence onset(TO)was defined as sinus heart rate acceleration,after ventrieular mature beat while turbulence slope(TS)as sinus heart rate deceleration slope after ventricular premsture beat.Normal value of TO was2.5 ms/RR period. SDNN,RMSSD,LF/HF in HRV were analysed from 24 hours ambulatory electrocardiography(before and after 1 month medication).Results ① In hypertensive group,52 patients showed positive TO(86.6%),48 patients pos- itive TS(80.0%)and 46 patients TO+TS(76.7%),compared with hypertension group only 2(4%)positive TO and 3(6%)positive TS in the healthy control.Forty-two cases SDNN(70.0%),41 cases RMSSD(68.3%)and 38 cases LF/HF(63.3 %)were positive in hypertensive group,while only 1(2 %)SDNN,1(2 %)RMSSD and 3(6 %) LF/HF in control. ② Metoprolol didn't change the positive percentage of parameters in HRT but parameters showing Heart rate variablity in HRV was decreased significantly found between TO,TS and TO+TS.Conclusion HRT and HRV is two indices for determination the dysfunction of autonomic nervous system in hypertension.?-re ceptor blocker inhibit sympathic activity,miligate the decreasing of HRV,but the bipbase accelerative and decelera- tive phenomena of HRT didn't change,HRT seems to be a more sensitive index for monitoring of autonomic sysfunc tion in hypertension.
6.Evaluation of CT-guided percutaneous transthoracic biopsy in the diagnosis of mediastinal masses
Zi-Li MENG ; Yong-Qing HONG ; Chun-Hui YE ; Liang CHEN ; Ji-Peng WANG ;
Journal of Interventional Radiology 2006;0(12):-
Objective To evaluate the clinical application and safety of CT-guided pereutaneous transthoracic biopsy in the diagnosis of mediastinal masses.Methods Thirty three cases were undertaken CT- guided percutaneous transthoraeie biopsy with automatic biopsy gun and then the sampling specimens were undergone histological examination.The accuracy of puncture,diagnostic correctness and complications were analyzed.Results The operations were performed successfully in all 33 cases(100%),the definite pathologic diagnosis were made in 28 out of 33 cases(85%)and no complications occurred.Conclusion As for midiastinal masses,CT-guided percutaneous transthoracic biopsy is a feasible,successful,efficient interventional diagnostic method with high accuracy in localization,puncture,diagnosis and few complications, which should he recommended in clinical use more widely.(J Intervent Radiol,2007,16:852-854)
7.Design and implementation of Magphan-phantom-based image parameters auto evaluation system for MRI quality inspection
Qi QI ; yu Jing CHEN ; li Zi SHEN ; qing Jia WANG ; Cheng LI
Chinese Medical Equipment Journal 2017;38(7):16-19,23
Objective To design and implement an automatic analysis and evaluation system for the image parameters of medical MRI quality testing.Methods The system was developed and debugged by the study on MRI image quality parameters,the image denoising,integration,extraction and etc by MATLAB processing platform as well as the comparison and comparative calculation of the obtained data.Results The system replaced manual operation by auto processing and parameters analysis of MRI quality inspection image.Conclusion The system enhances the efficiency and avoids artificial error,and has a promising prospect in the future.
8.Surgical therapy of thymic cancer.
Zi-Yong ZHANG ; Tao CHEN ; Yu-shang CUI ; Shan-qing LI ; Li LI ; Xiao-hui XU ; Feng GUO
Chinese Journal of Oncology 2005;27(12):759-759
Adult
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Aged
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Carcinoma, Small Cell
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pathology
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surgery
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Carcinoma, Squamous Cell
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pathology
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surgery
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Female
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Humans
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Male
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Middle Aged
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Thymus Neoplasms
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pathology
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surgery
9.Not Available.
Zi hao LIU ; Shu quan ZHAO ; Jian yi CHEN ; Wei nian DENG ; Qing SHI ; Yi wu ZHOU
Journal of Forensic Medicine 2021;37(5):718-720
10.The preliminary study of the efficiency of using cervical vertebral maturation of growth level of female adolescent idiopathic scoliosis.
Di-qing ZHANG ; Zi-qiang CHEN ; Ming LI
Chinese Journal of Surgery 2011;49(3):218-221
OBJECTIVESTo investigate the reliability of cervical vertebral maturation (CVM) and to verify the possibility in the growth evaluation of female adolescent idiopathic scoliosis patients as a helpful supplementary to the Risser sign.
METHODSCoronal and lateral full-length spine X-ray film and left hand-wrist radiographs of 77 female adolescent patients with idiopathic scoliosis were selected from January 2010 to October 2010. The interval period between lateral length of the spine and left hand-wrist radiographs did not exceed 3 months. The CVM was assessed by a method developed by Baccetti and co-workers, whereas hand-wrist maturation was assessed by Fishman's method. The results were analyzed by Spearman correlation with patients Risser sign, chronological age, and menarche period.
RESULTSThere were strong correlations between CVM and SMI or Risser sign (r = 0.862 and 0.762, P < 0.01). While in 26 patients whose Risser sign were 0-I, the correlation between CVM and SMI was more pronounced (r = 0.761, P < 0.01), compared with the correlation between Risser sign and SMI (r = 0.641, P < 0.01).
CONCLUSIONSCVM is a valid indicator of skeletal growth evaluation and can be used as a helpful supplementary to Risser sign.
Adolescent ; Age Determination by Skeleton ; methods ; Cervical Vertebrae ; diagnostic imaging ; growth & development ; Child ; Female ; Humans ; Reproducibility of Results ; Scoliosis ; diagnostic imaging ; physiopathology