2.A retrospective analysis of estimating postmortem interval in 256 murder cases.
Zheng SUN ; Li-Hui ZHONG ; Dong SUN
Journal of Forensic Medicine 2013;29(6):434-436
OBJECTIVE:
To discuss the method of reducing error in estimating postmortem interval (PMI).
METHODS:
Two hundred and fifty-six solved murder cases from 2003 January to 2013 January in Changzhou and Nanjing City were collected, The PMI of all cases was estimated by traditional method and then compared with the real PMI obtained after the cases were solved. The cases were grouped according to the PMI, the accuracy was calculated, and the reasons of suboptimal PMI were analyzed.
RESULTS:
The accuracies of early PMI (less than 12h and 13-24 h) were 90% and 89%, respectively; while the accuracies of late PMI (1-7 d, 1-2 weeks, 3-4 weeks, 1-6 months, 7-12 months and 1-5 years) decreased over time, being 79%, 76%, 83%, 79%, 60% and 50%, respectively. The common reasons of estimating error included improper inference methods, water submerged body, extreme temperature, lack of objective evidence, intentionally abandoned body, and changed or destroyed scene, etc.
CONCLUSION
The multiple index data can reduce the error in estimating PMI.
Autopsy
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Cause of Death
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Forensic Pathology/methods*
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Homicide
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Humans
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Postmortem Changes
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Retrospective Studies
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Seasons
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Temperature
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Time Factors
3.Endoscopic treatment of small osteoma of nasal sinuses manifested as nasal and facial pain.
Yu LI ; Tianqi ZHENG ; Zhong LI ; Hongyuan DENG ; Chaoxian GUO
Journal of Clinical Otorhinolaryngology Head and Neck Surgery 2015;29(24):2157-2159
OBJECTIVE:
To discuss the clinical features, diagnosis and endoscopic surgical intervention for small steoma of nasal sinuses causing nasal and facial pain.
METHOD:
A retrospective review was performed on 21 patients with nasal and facial pain caused by small osteoma of nasal sinuses, and nasal endoscopic surgery was included in the treatment of all cases.
RESULT:
The nasal and facial pain of all the patients was relieved. Except for one ase exhibiting periorbital bruise after operation, the other patients showed no postoperative complications.
CONCLUSION
Nasal and facial pain caused by small osteoma of nasal sinuses was clinically rare, mostly due to the neuropathic pain of nose and face caused by local compression resulting from the expansion of osteoma. Early diagnosis and operative treatment can significantly relieve nasal and facial pain.
Endoscopy
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Face
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Facial Pain
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Humans
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Nasal Surgical Procedures
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Osteoma
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surgery
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Paranasal Sinuses
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pathology
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Postoperative Complications
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Retrospective Studies
7.Vascular disruption effects of HepG2 tumor by microbubble desruption-re-desruption
Wenhong GAO ; Yu ZHONG ; Lu QIAO ; Li ZHANG ; Zheng LIU
Chinese Journal of Ultrasonography 2013;(2):166-169
Objective To investigate the change of HepG2 liver tumor perfusion after microbubble enhanced ultrasound cavitation treatment and observe the related pathological injury.Methods Twenty eight Balb/c(nu/nu) nude mice transplanted subcutaneous HepG2 tumor were divided into three groups randomly,including the microbubble enhanced ultrasound cavitation group,the ultrasound group and the sham group.Microbubble enhanced ultrasound cavitation treatment was performed by 0.1 ml microbubbles intravenous injection combined with pulse ultrasound emission in experimental group,while in control groups only ultrasound exposure or microbubble injection were applied.The perfusion of tumors was imaged using contrast-enhanced ultrasonography before and after treatments.Time-intensity curve and peak intensity were analyzed.The tumors were then harvested for histological examination.Results The perfusion of HepG2 tumors almost vanished immediately after treatment in experimental group,with the peak intensity reduced from (26.9 ± 10.9)% to(8.2 ± 5.8)% (P <0.05).There was no significant changes before and after treatments (P > 0.05) in the two control groups.Histological findings were disruption of the endothelia,significant hemorrhage and increased intercellular fluid.Conclusions Microbubble-enhanced ultrasound cavitation can significantly reduce tumor blood perfusion and disrupt tumor vascularture.This new ultrasound therapy can potentially become a new physical anti-angiogenetic therapy for liver tumor.
8.Protective effects of anisodamine on brain mitochondrial damage after complete cerebral ischemia and reperfusion in rabbits
Daixing ZHOU ; Qiang ZHONG ; Zheng LI ; Puzhen DENG
Chinese Journal of Tissue Engineering Research 2005;9(41):165-167
BACKGROUND: An isodamine, a kind of alkaloid, is extracted from Anisodus tanguticus (Maxim.) Pascher and is also a good protective agent of cell. However, functional change of mitochondrion is the most sensitive index reflecting cell injury.OBJECTIVE: To study the effects of anisodamine on brain mitochondrial damage following global cerebral ischemia and reperfusion in domestic rabbits and explore its mechanism.DESIGN: Totally randomized controlled trials.SETTING: Emergency Department of Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology.MATERIALS: The experiment was carried out in the laboratory of Emergency Department, Tongji Hospital Affiliated to Tongji Medical College of Huazhong University of Science and Technology, from September to December in 2002. Thirty healthy domestic rabbits of either sex were used and randomized into sham-operation group, ischemia-reperfusion group and anisodamine group with 10 rabbits in each group.METHODS: The models of complete cerebral ischemia and reperfusion injury in rabbits were established by ligation of bilateral common carotids and vertebral arteries with systemic hypotension, ischemia lasting for 20 minutes followed by 2-hour reperfusion. Anisodamine group was injected with anisodamine at a dose of 10 mg/kg body mass via femoral vein one minute before reperfusion, and lasted for 2 hours at a dose of 5 mg/hour by micro-pump. Ischemia-reperfusion group was treated with normal saline of the same volume. Sham-operation group only underwent used to determine mitochondrial respiratory functions, including respiratory control rate (RCR), the ratio of adenosine diphosphate to oxygen nicotinamide adenine dinucleotide hydrogenated (NADH) oxidase, succinate oxidase and cytochrome C oxidase were measured by the oxygenmethod of Yagi.drial calcium (Ca2+) and malondiadhyde (MDA) in cortex.reperfusion group and anisodamine group, RCR, ADP/O, OPR levels were lower than those in sham-operation group [nicotinamide adenine dinucleotide chain: RCR: 2.34±0.18,3.58±0.29,4.07±0.38,P < 0.05-0.01;ADP/O: 1.77±0.10,2.23±0.14,2.41±0.17,P < 0.05-0.01; OPR: (5.27±0.78),(8.03±1.30), (9.63±1.50)μkat/g, P < 0.05-0.01; flavin adenine dinucleotide chain: RCR: 1.47±0.23,2.53±0.28,2.84±0.36,P < 0.05-0.01;ADP/O: 0.88±0.09,1.58±0.11,1.73±0.17 ,P < 0.05-0.01; OPR: (6.05±1.13),(7.47±1.40), (8.62±1.60)μkat/g,P < 0.05-0.01], and those were higher in chemia-reperfusion group and anisodamine group, the activities of respiratory chain oxidase of NADH, succinate and cytochrome C were lower than those in sham-operation group [NADH: (2.62±0.35), (4.55±0.48), (5.07±0.60)μkat/g;succinate: (1.48±0.17), (1.83±0.22), (2.10±0.28)μkat/g; cytochrome C:(5.03±1.12), (7.62±1.23), (9.00±1.53)μkat/g, P < 0.05-0.01], and those were higher in anisodamine group than in ischemia-reperfusion group, the content of mitochondrial Ca2+ [(2.36±0.23), (1.39±0.17),(1.22±0.12) mg/g] and MDA [(36.38±10.42), (22.69±9.56), (19.74±7.26)μmol/g,(P < 0.05-0.01 )] was higher than that in sham-operation group, and it was lower in anisodamine group than in ischemia-reperfusion group (P < 0.01).CONCLUSION: Anisodamine can protect the brain against ischemiareperfusion injury at the level of mitochondria by antagonism of Ca2+, inhibition of lipid peroxidation, stabilization of mitochondrial membrane, alleviation of mitochondrial damage, and improvement of motochondrial respiratory functions and the activities of enzymes of respiratory chain.
9.Application of lateral femoral circumflex artery perforator flaps and fit together for limbs complex wound surface
Xiaoju ZHENG ; Zhong ZHANG ; Haijun LI ; Xinhong WANG
Chinese Journal of Microsurgery 2013;(2):115-118
Objective To evaluate the feasibility and clinical efficacy of lateral femoral circumflex artery perforator flaps and fit together in the treatment of limbs complex wound surface.Methods From January 2010 to March 2012,use the characteristics that the descending branch of lateral femoral circumflex artery extend its branches over the flap,fascia and skin,to form lenticulostriate arteries,which contain 2 to 3 different species tissues fits together,flaps cover the important tissues such as vessel,nerves and bones.Fascia covers the tendinous tissues etc.Muscle can not only cover the tissues,but also fill in the space,and followed by skin grafting.This research was to perform the treatment for 4 cases of lacking limbs ring tissue,three cases of multiple wound surface,six cases of hand avulsion injury of skin and 9 cases of Gustilo grade-Ⅲ C.Results As for the 22 cases in the research,nineteen cases of flaps survived,the other 3 cases were necrosis with length of 1cm to 2 cm at distal and self-healed later.During 6 months to 2 years followed-up of 18 cases,external flaps were satisfactory,skin grafting over the fascia layers develops very well,smooth with great elasticity,no recoil,and no color change.Conclusion Lateral femoral circumflex artery is one of effective restoration methods for limbs with complex wound surface.
10.Study on the Bioavailability of 2 Kinds of Cyclosporin A in Human Body
Zhiwei GAO ; Zhongdong LI ; Xiaojin SHI ; Zheng JIAO ; Mingkang ZHONG
China Pharmacy 2005;0(22):-
0.05)except that the tmax of the testing preparation was faster than that of the control drug.The relative bioavailability of the testing drug was(93.83?15.21)%.CONCLUSION:The AUC0~24,AUC0~∞and Cmax of 2 preparations are similar,but there is a significant difference in tmax.