Autonomic Nervous System Diseases ; physiopathology ; Humans ; Liver Cirrhosis ; physiopathology

Fibrosis ; Hematoma, Subdural ; Humans ; Osteogenesis ; Subdural Space ; Tomography, X-Ray Computed

OBJECTIVE: To explore the application value of postmortem multi-slice spiral computed tomography (MSCT) by observing and analyzing the injury features in the traffic accident victims. METHODS: Ten traffic accident victims were scanned with whole body MSCT. The systemic autopsy was subsequently performed to compare with the results of MSCT. The advantages and disadvantages of autopsy and MSCT for obtaining the information of traffic accident injuries were then analyzed. RESULTS: MSCT could reveal 3D shape of fractures clearly and detect air accumulation in different positions of the body, which showed the obvious advantages compared with autopsy. However, the resolution of MSCT was limited compared to the detection of organ and soft tissue injuries. CONCLUSION A combination of MSCT and autopsy is the best way for determining the manner and the cause of death in traffic fatality victims.
Accidents, Traffic ; Autopsy ; Fractures, Bone ; Humans ; Soft Tissue Injuries ; Tomography, Spiral Computed

OBJECTIVE: To investigate and analyze the changes of postmortem human biochemical indexes. METHODS: Subclavian venous blood samples were collected from 81 cases of traffic fatalities. Thirteen blood biochemical indexes including liver function (ALT, AST, TBIL and DBIL), renal function (UA and Cr), cardiac function (CK, CK-MB and LDH), electrolytes (K+, Na+ and Cl-), and glucose (GLU) were tested by Roche cobas c311 automatic biochemical analyzer. The descriptive analysis was made by SPSS 17.0 statistical software. RESULTS: The values of ALT, AST, CK, CK-MB, LDH and K+ were higher than normal reference values with more fluctuations. The values of TBIL, DBIL, UA, Cr, Na+, Cl- and GLU were relatively stable with less fluctuations. CONCLUSION The postmortem human blood biochemical indexes of liver function, renal function, cardiac function, electrolytes and glucose could be affected by the factors, especially hemolysis and autolysis. The biochemical indexes, particularly enzymes, increased significantly with higher standard deviation.
Accidents, Traffic/mortality* ; Autopsy ; Blood Chemical Analysis/methods* ; Heart Function Tests ; Humans ; Kidney Function Tests ; Liver Function Tests ; Reference Values

Objective To observe the effect of every-other-day fasting(EODF)on pathology and functional recovery of rats with spinal cord clip-compression injury,and to explore the related mechanism. Methods A total of 36 Sprague-Dawley rats were randomly assigned to groups A(sham operation),B(sham operation and EODF),C(spinal cord injury)and D(spinal cord injury and EODF)with nine rats in each group.The spinal cord injury rat model in T10was established by using medical aneurysm clip in latter two groups.The motor func-tion was assessed by Basso-Beattie-Bresnahan(BBB)score one day before and one day,two,four,six,eight,ten, twelve weeks after operation;and toluidine blue staining was performed for pathological observation at twelve weeks after operation.Another 180 Sprague-Dawley rats were randomly assigned in same way.The level of tu-mor necrosis factor-α(TNF-α)and interleukin-10(IL-10)were detected with ELISA six hours,twelve hours,one day,three days and seven days after operation. Results The BBB score reached lowest on the first day in groups C and D(P<0.05),and gradually increased with time,and were higher in group D than in group C eight weeks,ten weeks and twelve weeks after operation(P<0.05). The pathology in spinal cord was less in group D than in group C.Compared with group A,the level of serum TNF-α increased twelve hours after operation(P<0.05),peaked one day after operation,and returned back seven days after operation;the level of serum IL-10 increased at each time point after operation(P<0.05).Compared with group C,the level of serum TNF-α was lower in group D one day after operation(P<0.05);the level of se-rum IL-10 was not significantly different at each time point after operation(P>0.05). Conclusion Long-term EODF can promote the hind limb motor recovery in rats with spinal cord clip-compression inju-ry,and alleviate pathological damage.EODF might inhibit acute inflammatory reaction at acute stage of spinal cord injury,which may be correlated with its neuroprotective effect.

OBJECTIVETo investigate the role of T cell and its subsets in the induction of insulitis and type 1 diabetes mellitus (T1DM) in BALB/c mice.

METHODSAutoimmune diabetes mellitus was developed by intraperitoneal injection of 40 mg/kg streptozotocin (STZ) daily for 5 consecutive days in BALB/c mice as sources of donor cells. Spleen cells from diabetic mice were then cultured for 7 days in the stimulation of interleukin-2 (IL-2) to harvest diabetogenic T cells, which were subsequently transferred into normal BALB/c mice recipients. MTT, ELISA, and HE staining were used to analyze the lymphocyte proliferation, cytokine (IL-2, interferon-gamma, IL-4, and IL-10) levels, and pathological changes in pancreatic islets.

RESULTSAs few as 3 x 10(6) diabetogenic T cells successfully induced diabetes mellitus in recipients pretreated with STZ twice, whereas transfer of equal amount of normal splenocytes, T cell-depleted diabetogenic splenocytes, or diabetogenic CD4+ T cells alone in recipients receiving STZ twice pretreatment was proved not to induce diabetes mellitus either. A markedly increased lymphocyte proliferation, high levels of interferon-gamma and IL-2 in the supernatants of diabetogenic T cells were observed. In addition, a markedly enhanced lymphocyte proliferation, a high level of interferon-gamma secretion in serum, and numerous lymphocytes infiltration in pancreatic islets were detected in the diabetic mice induced by diabetogenic T cells transfer.

CONCLUSIONSA novel T1DM murine model is established in STZ-pretreated BALB/c mice by adoptive transfer of diabetogenic T cells. CD4+ T cells with interferon-gamma may promote the onset of diabetes mellitus.

Animals ; Blood Glucose ; metabolism ; Cytokines ; immunology ; Diabetes Mellitus, Experimental ; metabolism ; pathology ; Diabetes Mellitus, Type 1 ; immunology ; pathology ; Disease Models, Animal ; Islets of Langerhans ; cytology ; metabolism ; pathology ; Male ; Mice ; Mice, Inbred BALB C ; T-Lymphocytes ; cytology ; immunology

Aged ; Blood Platelets ; pathology ; Female ; Humans ; Lung Neoplasms ; complications ; Male ; Middle Aged

A 45-year-old male car driver died in a traffic accident of four cars rear-end collision on the highway. He was found to have died after a respiratory and cardiac arrest at the scene. No sign of skin injuries was observed from the external inspection. The autopsy was not permitted by the family members because of the local culture. Multislice computed tomography (MSCT) was applied to the current case, showing dislocation of C3-4 cervical vertebrae with II degree, C4 vertebral plate fractures, and spinal stenosis. Post-mortem MSCT confirmed the diagnosis as whiplash injuries. MSCT was verified to be effective in showing the severity of whiplash injuries, thus providing certain objective evidence for medicolegal expertise.
Accidents, Traffic ; Autopsy ; Humans ; Male ; Middle Aged ; Multidetector Computed Tomography ; Spinal Fractures ; Whiplash Injuries/diagnostic imaging*

The combination use of dexamethasone and calcium gluconate can be applied to hypersensitivity. Severe hypokalemia is a usual complication of dexamethasone and calcium gluconate therapy, which occurs frequently with therapeutic use. Fatal cases, accidental and intentional, occur frequently in forensic practice. The current case report presented a 43-year-old man with diabetes mellitus with infection, to whom dexamethasone and calcium gluconate were administered in the private clinic. With the development of such clinical symptoms of severe hypokalemia as quadriplegia, he was confirmed to have severe hypokalemia through a biochemical test before dying of arrhythmia. And also it presented pathophysiologic mechanism underlying severe hypokalemia as well as suggestions for clinical practice regarding combination use of dexamethasone and calcium gluconate.
Adult ; Anti-Inflammatory Agents/adverse effects* ; Calcium Gluconate/adverse effects* ; Dexamethasone/adverse effects* ; Diabetes Mellitus ; Fatal Outcome ; Humans ; Hypokalemia/chemically induced* ; Male

Postmortem chemistry is becoming more and more essential in routine forensic pathology and has made considerable progress over the past years. Biochemical analyses of vitreous humor, blood, urine and cerebrospinal fluid may provide important information in determining the cause of death or in elucidating forensic issues. Postmortem chemistry may be essential for the determination of cause of death when morphological methods (diabetes mellitus, alcoholic ketoacidosis and electrolytic disorders) cannot detect the pathophysiological changes involved in the death process. It can also provide many information in other forensic situations, including myocardial ischemia, sepsis, inflammation, infection, anaphylaxis and hormonal disturbances. The most recent relevant research advances on glucose metabolism, liver function, cardiac function, renal function, sepsis, inflammation, infection, anaphylaxis and hormonal aspect are hereby reviewed.
Anaphylaxis ; Autopsy/trends* ; Biomarkers/analysis* ; Body Fluids/chemistry* ; Death ; Diabetes Mellitus ; Forensic Pathology/methods* ; Humans ; Postmortem Changes ; Sepsis ; Vitreous Body