Objective:The aim of the present study is to investigate the expression of TGF- ?1 and bFGF in human DCM myocardium, as well as the roles of TGF - ?1 and bFGF in DCM myocardium remodeling and the mechanism of sudden death induced by DCM. Methods:30 specimens of DCM heart and control have been collected from forensic pathologic autopsy. Tissues have been prepared by paraffin section for HE staining, and immunohistochemistry with antibodies against TGF?1, TGF?R1, bFGF, bFGFR. The staining results have been observed with light microscope and analyzed by image processing system. Results:The results showed that the protein expression of the TGF - ?1in DCM myocardium was increased,and there was no significant difference of the bFGF protein expression between DCM and controls. Conclusion :The results of this experiment indicate that TGF- ?1 is the most important cellular factor in DCM myocardium remodeling,and the role of bFGF in the remodeling of DCM myocardium needs to be further studied.

Objective:To detect TNF-? in the tissue of myocardium injury during stress and discuss its significance.Methods:To establish a model of myocardium lesion by injecting ISO to mice abdominal cavity,then TNF-? in the tissue of heart was assessed by immunohistochemical method of SP and HE staining in paraffin sections.Results:There were little positive substance of TNF-? expressed in heart in normal control.The positive substance of TNF-? increased significantly after stress.Conclusion:Increase in the expression of TNF-? in stress indicate its participation in the process of myocardium injury,and it may be an objective marker for evaluation of myocardium injury.

0.05).However,there was significant difference in E-selectin expression among each postmortem stability group of which skin samples were kept at 25℃ degree as compared with the wounded skin at 0h after injury(P

This paper reports the forensic pathological diagnosis of 3 cases of sudden death caused by the viral myocarditis. The mechanism of sudden death was discussed.

The astrocyte reaction to cerebral trauma was reviewed in this paper,which included the study model,detection technique,as well as the astrocyte changes in the morphology and metabolism.It was also prospected to their significance in medicolegal expertise.

Objective To observe the stability and the change pattern of VEGF expression in myocardium in varied postmortem periods,and to evaluate its usefulness in diagnosis of early myocardial ischemia after death.Methods An animal model of early myocardial ischemia was established by ligating coronary artery of rabbit,immunohistochemistry(SP protocol),image analysis technique and statistical analysis system are applied to detect and compare the area and intensity of expression of VEGF in cardiocytes,and its stability in different postmortem perieds.ResultsIn ischemic myocardium,VEGF shows foci or sheets of intense positive staining in cardiocytes,with negative or weak staining in some cells.There was weak staining in vascular endothelial cells and smooth muscle cells,but no staining in interstitium.When ischemic myocardium stored at 4℃,the staining of VEGF became weaker with time delay,but there was weak staining in a fraction of cardiocytes even 10d after death.There was significant difference in the intensity of VEGF staining between ischemic and normal postmortem myocardium from 1 to 10d.Conclusion VEGF can withstand a certain degree of autolysis or putrefaction,and the immunohistochemical staining of it is valuable in the diagnosis of early myocardial ischemia in corpses stored at 4℃ for 1~10d after death.

Objective To investigate relation of IL-18 and collagen fibre(CF) with plaque stability in aorta atherosclerotic lesion.Methods Morphology and content of CF in rupture of aorta atherosclerotic group(A group),non-rupture of aorta atherosclerotic group(B group) and normal aorta group(C group) were examined by Massion's staining.Expression of IL-18 by was measured immunohistochemical staining among three groups.Results Increasing and arranging turbulence of the CF was found in tunica intima,middle layer and tunica adventitia in A and B groups.Around necrosis of atheromatous plaque,CF significantly increased and arranged turbulence,but the CF decreased or disappeared in necrosis area of atheromatous plaque in A group.The CF significantly increased,arranged turbulence and extended to SMCs in necrosis of atheromatous plaque in B group.Arranging orderliness and absence of disruption of the CF was recorded in C group.Percent age of CF content was significantly different among three groups(P

By analyzing the current situation of Forensic Medicine’s popularization,point out that it is important to emphasize the education of Forensic Medicine among medical specialty students. Advices were also given.

The autonomic nervous function, blood pressure, coordinate motor and blood alcohol Concentration (BAG) of twenty-one healthy Han volunteers were examined before and after alcohol intake. The purpose was to assess the acute effects of low and moderate doses of alcohol on their coordinate motor and autonomic nervous function. The results showed that after alcohol intake the subjects' heart rate increased and the total power value (TPV) decreased significantly. After the intake of alcohol at low dose, the parasympathetic nervous function of the subjects lying supoine was inhibited significantly. After the intake of alcohol at moderate dose, both the parasympathetic and the sympathetic nervous functions were inhibited. After the intake of alcohol at low dose, both the systolic pressure and the diastolic pressure of the subjects standing up-right were decreased and the diastolic pressure of those lying supine were also decreased. After the intake of alcohol at moderate dose, the systolic and diastolic pressures of the subjects, either lying supine or standing up-right, were decreased. Some subjects showed ataxia after the intake of alcohol at low dose ,and some showed aggravated ataxia after intake of alcohol at moderate dose of alcohol. There was no relationship of BAG with the degree of changes in autonomic nervous function, blood pressure and ataxia. The results indicated that ataxia was induced to come on and the autonomic nervous function was inhibited in some subjects who had taken low and moderate doses of alcohol ,and the cardiovascular regulation was affected too. These suggested that the increase of alcohol intake is adverse to human body's adaptation to the sharp change of circumstance.
Adult ; Alcohol Drinking ; Autonomic Nervous System ; drug effects ; physiology ; Blood Pressure ; drug effects ; China ; ethnology ; Electrocardiography ; drug effects ; Ethanol ; administration & dosage ; adverse effects ; Female ; Gait Ataxia ; chemically induced ; Heart Rate ; drug effects ; Humans ; Male

A novel disposable three electrodes blood alcohol biosensor strip was fabricated by a screen printing technique. Multi-wall carbon nanotube(MWCNT), Meldola′s(MB), alcohol dehydrogenase(ADH)and nicotinamide adenine dinucleotide cofactor (NAD+) were modified on the surface of the carbon working electrode. Then hydrophilic membrane was stuck in the outermost of the three electrodes to make a reaction camera of 5 μL. Experimental results indicated that the biosensor possessed good accuracy and stability, the linear response range was 0.5-20 mmol/L with correlation coefficient of 0.9949, detection limit was 0.22 mmol/L, and the response time was less than 15 s. Some influencing factors to the biosensor were investigated, such as the pH, temperature and interferences. Correlation analysis showed that there was a significant correlation between the methods of biosensor and the headspace vapor phase chromatography in 10 whole blood samples(r=0.97583). Small volume whole blood sucked using siphonage to detect blood alcohol directly and quantitatively was the obvious character of the biosensor.