Forensic

法医
  • 文章类型: Journal Article
    情绪不稳定的人格障碍(EUPD)是一种使人衰弱的精神障碍,在女性和法医人群中尤其常见。然而,有效控制EUPD症状的适当药物治疗仍未满足临床需求.多巴胺受体部分激动剂(DRPAs),比如阿立哌唑,具有良好的耐受性,并且在针对情绪失调的症状方面表现出一些益处,虽然,关于新型D2/D3DRPA卡利拉嗪在EUPD患者中的作用的证据有限.
    在诊断更为普遍的一系列女性法医住院患者中,评估卡利拉嗪对EUPD的疗效和耐受性。
    患者的人口统计学和临床信息是在他们进入专门的NHS法医服务期间从患者电子记录中收集的。在基线时使用阳性和阴性综合征量表(PANSS)测量治疗反应,3和6个月以及基线和6个月时的总体临床印象量表(CGI评分)。耐受性和BMI,在开始前和6个月时记录ECGQTc间期和催乳素水平。
    8名EUPD女性患者(平均年龄29.8岁,SD5.3)用卡利拉嗪(范围3-6mg)治疗。总CGI评分在6个月时从5.6基线适度改善至5.0。从基线到6个月,PANSS平均总分降低(92.5,SD8.1至72.4,SD15.8),一般精神病理学(56.1SD6.7至42.5,SD9.7),积极(21.9SD4.6至17.1,SD4.8)和消极的PANSS得分(14.5SD6.3至12.8,SD4.6),相当于21%,23%,20%和3%的平均得分降低,分别。Cariprazine表现出良好的代谢和激素副作用,在6个月的随访中没有停止治疗。
    这是第一个评估卡利拉嗪在EUPD中有效性的病例系列。其在改善PANSS和CGI-S评分方面的功效总体适度且高度可变,反映了固有的异质性和合并症患者样本,但对治疗毅力和耐受性的益处是相当大的。Cariprazine可能在EUPD中特别有益,在EUPD中,精神病症状是共病的,作为氯氮平的补充策略,或以前的抗精神病药引起代谢或激素副作用的地方。
    UNASSIGNED: Emotionally unstable personality disorder (EUPD) is debilitating psychiatric disorder, particularly common in female and forensic populations. However, appropriate pharmacological treatment to effectively manage symptoms of EUPD remains an unmet clinical need. Dopamine receptor partial agonists (DRPAs), such as aripiprazole, have a favourable tolerability profile and have demonstrated some benefits in targeting symptoms of emotional dysregulation, although, evidence regarding the effects of novel D2/D3 DRPA cariprazine in EUPD patients has been limited.
    UNASSIGNED: To evaluate the efficacy and tolerability of cariprazine for EUPD in a case series of female forensic inpatients where the diagnosis is more prevalent.
    UNASSIGNED: Demographic and clinical information of the patients were collected from patient electronic records during their admission in a specialized NHS forensic service. Treatment response was measured using the Positive and Negative Syndrome Scale (PANSS) at baseline, 3 and 6 months and Global Clinical Impression Scale (CGI-scores) at baseline and 6 months. Tolerability and BMI, ECG QTc interval and prolactin levels were recorded prior to initiation and at 6 months.
    UNASSIGNED: Eight female patients with EUPD (mean age 29.8 years, SD 5.3) were treated with cariprazine (range 3-6mg). Total CGI-scores modestly improved from 5.6 baseline to 5.0 at 6 months. There was a reduction in mean total PANSS scores from baseline to 6 months (92.5, SD 8.1 to 72.4, SD 15.8), general psychopathology (56.1 SD 6.7 to 42.5, SD9.7), positive (21.9 SD 4.6 to 17.1, SD4.8) and negative PANSS scores (14.5 SD 6.3 to 12.8, SD4.6), corresponding to a 21%, 23%, 20% and 3% mean score reduction, respectively. Cariprazine demonstrated a favourable metabolic and hormonal side effect profile with no treatment discontinuation at 6 months follow up.
    UNASSIGNED: This is the first case series to evaluate the effectiveness of cariprazine in EUPD. Its efficacy in improving PANSS and CGI-S scores was overall modest and highly variable, reflective of an inherently heterogenous and comorbid patient sample but the benefits on treatment perseverance and tolerability were considerable. Cariprazine may be of particular benefit in EUPD where psychotic symptoms are co-morbid, as an augmentation strategy to clozapine, or where previous antipsychotics have caused metabolic or hormonal side effects.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    全球气候的异常变化,导致极端天气,极大地威胁到参与户外活动的个人的安全。低温引起的昏迷或死亡经常发生在临床和法医环境中。尽管如此,由于低温引起的中枢神经系统损伤的确切机制尚不清楚,阻碍了有针对性的临床治疗方法和特定法医诊断指标的发展。搜索GEO数据库以识别与体温过低相关的数据集。后生物信息学分析,DEGs,与铁中毒相关的DEGs(FerrDEGs)相交。然后进行GSEA以阐明Ferr相关基因的功能。在这项研究中进行的动物实验表明,低温,与对照治疗相比,可以诱导铁死亡相关基因如PPARG的显著改变,SCD,ADIPOQ,脑皮质神经细胞中的SAT1、EGR1和HMOX1。这些变化导致铁离子积累,脂质过氧化,和铁死亡相关蛋白的显著表达。铁死亡抑制剂Ferrostatin-1(Fer-1)的应用有效地调节了这些基因的表达,减少脂质过氧化,并提高铁死亡相关蛋白的表达。严重的低温会破坏大脑皮层神经细胞的代谢,导致铁凋亡相关基因的显著改变。这些遗传变化通过多种途径促进铁死亡。
    Abnormal shifts in global climate, leading to extreme weather, significantly threaten the safety of individuals involved in outdoor activities. Hypothermia-induced coma or death frequently occurs in clinical and forensic settings. Despite this, the precise mechanism of central nervous system injury due to hypothermia remains unclear, hindering the development of targeted clinical treatments and specific forensic diagnostic indicators. The GEO database was searched to identify datasets related to hypothermia. Post-bioinformatics analyses, DEGs, and ferroptosis-related DEGs (FerrDEGs) were intersected. GSEA was then conducted to elucidate the functions of the Ferr-related genes. Animal experiments conducted in this study demonstrated that hypothermia, compared to the control treatment, can induce significant alterations in iron death-related genes such as PPARG, SCD, ADIPOQ, SAT1, EGR1, and HMOX1 in cerebral cortex nerve cells. These changes lead to iron ion accumulation, lipid peroxidation, and marked expression of iron death-related proteins. The application of the iron death inhibitor Ferrostatin-1 (Fer-1) effectively modulates the expression of these genes, reduces lipid peroxidation, and improves the expression of iron death-related proteins. Severe hypothermia disrupts the metabolism of cerebral cortex nerve cells, causing significant alterations in ferroptosis-related genes. These genetic changes promote ferroptosis through multiple pathways.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    活体患者的死后计算机断层扫描(CT)方法与诊断性CT方法显着不同。消除诸如噪声和射束硬化的伪影以及组织对比度的优化需要改变设计成限制儿童的辐射剂量的方案的曝光参数。可以执行多次扫描,详细的后处理可用于增强细微的发现,如颅内轴外小集合和非移位骨折。本文讨论了死后CT技术的基础知识以及扫描和后处理中的先进技术。
    The approach to postmortem computed tomography (CT) differs significantly from that of diagnostic CT in living patients. Elimination of artifacts such as noise and beam hardening as well as optimization of tissue contrast requires alteration of exposure parameters from protocols designed to limit radiation dose in children. Multiple scans may be performed, and detailed post-processing can be used to enhance subtle findings such as small intracranial extra axial collections and non-displaced fractures. Basics of postmortem CT technique are discussed here as well as advanced techniques in scanning and post-processing.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

  • 文章类型: Journal Article
    背景:法医牙科整合了跨学科的科学知识,以产生准确可靠的法医陈述。人体测量学,自从1882年由AlphonseBertillon引入以来,它是必不可少的,它描述了人体形状,并具有重要的法医应用。这项研究的重点是性二态,男性和女性之间的表型差异,使用侧位头颅测量来确定Chengalpattu人群中10-12岁儿童的性别。
    方法:横断面研究包括80名参与者(40名男孩和40名女孩)。使用CephNinjaPro软件分析侧向头颅图,以获得15个头颅测量值。使用SPSS软件(22.0版)进行统计学分析,采用t检验,以确定显着差异(P<0.05)。判别函数分析评估了这些变量的预测能力。
    结果:七个变量显示出性别差异显着。基于这些变量的判别模型以不同的可靠性确定性别。Ramus长度是最可靠的预测指标(81%),而上颌长度的可靠性最低(62%)。
    结论:该研究的发现与现有文献一致,表明ramus长度对性别决定的鲁棒性。然而,上颌长度的低可靠性与发现它对性别分化有用的研究形成对比,表明人口和年龄组之间的差异。结合多个头颅测量变量提高了准确性,与以往的研究一致。
    结论:侧位头颅能有效评估儿童性二态性。该研究支持头颅测量的法医和临床实用性,并呼吁对不同人群和先进的成像技术进行进一步研究,以增强方法的可靠性和适用性。
    BACKGROUND: Forensic dentistry integrates interdisciplinary scientific knowledge to produce accurate and reliable forensic statements. Anthropometry, essential since its introduction by Alphonse Bertillon in 1882, describes human body shapes and has significant forensic applications. This study focuses on sexual dimorphism, phenotypic differences between males and females, using lateral cephalometric measurements to determine sex in children aged 10-12 years from the Chengalpattu population.
    METHODS: The cross-sectional study included 80 participants (40 boys and 40 girls). Lateral cephalograms were analyzed using Ceph Ninja Pro software to obtain 15 cephalometric measurements. Statistical analysis using SPSS Software (Version 22.0) involved t-tests to identify significant differences (P<0.05). Discriminant function analysis assessed the predictive power of these variables.
    RESULTS: Seven variables showed significant differences between sexes. Discriminant models based on these variables determined sex with varying reliability. Ramus length was the most reliable predictor (81%), while maxillary length had the lowest reliability (62%).
    CONCLUSIONS: The study\'s findings align with existing literature, indicating the robustness of ramus length for sex determination. However, the low reliability of maxillary length contrasts with studies that found it useful for sex differentiation, suggesting variability across populations and age groups. Combining multiple cephalometric variables improved accuracy, consistent with previous research.
    CONCLUSIONS: Lateral cephalograms are effective for assessing sexual dimorphism in children. The study supports the forensic and clinical utility of cephalometric measurements and calls for further research with diverse populations and advanced imaging techniques to enhance method reliability and applicability.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    背景:儿童和青少年法医心理健康服务的结果测量可以支持服务改进,研究,和患者进展评估。本系统评价旨在确定验证可用作儿童和青少年法医心理健康服务队列中结果测量的结构化工具的研究,并评估这些研究的质量。
    方法:按照PRISMA指南进行系统评价。2023年11月,通过搜索六个在线数据库确定了研究。两名作者使用Crowe关键评估工具独立评估了符合纳入标准的每项研究的质量和偏倚风险。结果以叙述方式合成。
    结果:共确定了8项符合纳入标准的研究。这些研究了六种工具,这些工具主要侧重于治疗动机领域的结果衡量标准,功能水平,精神症状,护理需求和对社会情况的反应。在Crowe关键评估工具上,论文得分在17/40和30/40之间。研究被评为低(n=1),中等(n=6),高(n=1)或非常高质量(n=0)。
    结论:尽管可能有大量的结构化工具,在儿童和青少年法医心理健康服务中用作结果指标的证据有限。未来的研究应旨在验证目前在法医儿童和青少年环境中使用的结构化工具,考虑是否应该专门为这一群体开发新的工具。这种工具应该由作为服务使用者的年轻人和将使用该工具的专业人员开发。
    BACKGROUND: Outcome measurement in child and adolescent forensic mental health services can support service improvement, research, and patient progress evaluation. This systematic review aimed to identify studies which validate structured instruments available for use as outcome measures in the child and adolescent forensic mental health service cohort and assess the quality of these studies.
    METHODS: A systematic review was conducted following PRISMA guidelines. Studies were identified by searching six online databases in November 2023. The quality and risk of bias of each study meeting inclusion criteria was independently assessed by two authors using the Crowe Critical Appraisal Tool. Results were synthesised narratively.
    RESULTS: A total of eight studies were identified which met inclusion criteria. These looked at six instruments which primarily focused on outcome measures in the areas of treatment motivation, level of functioning, psychiatric symptoms, care needs and response to social situations. Papers scored between 17/40 and 30/40 on the Crowe Critical Appraisal Tool. Studies were rated as low (n = 1), moderate (n = 6), high (n = 1) or very high quality (n = 0).
    CONCLUSIONS: Despite the large number of structured instruments potentially available, evidence for their use as outcome measures in child and adolescent forensic mental health services is limited. Future research should aim to validate current structured instruments for use in the forensic child and adolescent setting, with consideration of whether new instruments should be developed specifically for this group. Such instruments should be developed with both young people as service users and professionals who will be utilising the instrument in mind.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

  • 文章类型: Journal Article
    暂无摘要。
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

  • 文章类型: Journal Article
    揭示个人特征有助于识别法医犯罪中的个人。由于唾液是犯罪现场最常见的生物样本之一,充分利用唾液中丰富的个人信息非常重要。这项研究的目的是通过分析具有不同饮食习惯的健康个体的唾液微生物组和代谢组的差异,探索微生物组在法医学中的应用。
    我们根据12名素食者的口腔唾液样本进行了16SrDNA测序分析,12个海鲜杂食和12个牛肉和羊肉杂食。还基于来自健康个体的唾液样品进行非靶向代谢组学分析。
    结果表明,素食者的优势菌群以奈瑟菌(属于变形杆菌门)为主,而海鲜杂食和牛羊杂食则以链球菌为主(属于Firmicutes门)。基于NDMS和聚类分析表明,素食节食者与肉类节食者(海鲜杂食和牛肉和羊肉杂食者)显着区别,这可能与高纤维饮食可以创造不同的唾液菌群结构有关。在唾液代谢途径中也检测到变异,包括与脂质代谢的正相关,氨基酸代谢,碳水化合物代谢,和素食者的核苷酸代谢,和海鲜杂食动物的相关性。为了选择可以区分不同饮食概况的唾液微生物和代谢标记,本研究构建了一个随机森林分类器模型,结果表明,根据核心属和代谢产物如链球菌,可以成功区分具有不同膳食特征的个体,氨酰缬氨酸。
    我们的研究为唾液组学的应用提供了支持基础,以揭示个体的饮食特征,用于法医调查和犯罪解决。
    UNASSIGNED: Revealing individual characteristics is supportive for identifying individuals in forensic crime. As saliva is one of the most common biological samples used in crime scenes, it is important to make full use of the rich individual information contained in saliva. The aim of this study was to explore the application of the microbiome in forensic science by analysing differences in the salivary microbiome and metabolome of healthy individuals with different dietary habits.
    UNASSIGNED: We performed 16S rDNA sequencing analysis based on oral saliva samples collected from 12 vegetarians, 12 seafood omnivores and 12 beef and lamb omnivores. Non-targeted metabolomics analyses were also performed based on saliva samples from healthy individuals.
    UNASSIGNED: The results showed that the dominant flora of vegetarians was dominated by Neisseria (belonging to the phylum Proteobacteria), while seafood omnivores and beef and lamb omnivores were dominated by Streptococcus (belonging to the phylum Firmicutes). NDMS-based and cluster analyses showed that vegetarian dieters were significantly differentiated from meat dieters (seafood omnivores and beef and lamb omnivores), which may be related to the fact that high-fiber diets can create a different salivary flora structure. Variants were also detected in salivary metabolic pathways, including positive correlations with Lipid metabolism, Amino acid metabolism, Carbohydrate metabolism, and Nucleotide metabolism in vegetarians, and correlations in seafood omnivores. In order to select salivary microorganisms and metabolic markers that can distinguish different dietary profiles, a random forest classifier model was constructed in this study, and the results showed that individuals with different dietary profiles could be successfully distinguished based on the core genera and metabolites such as Streptococcus, Histidinyl-Valine.
    UNASSIGNED: Our study provides a supportive basis for the application of salivary polyomics in order to reveal the dietary characteristics of individuals for forensic investigation and crime solving.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    极端微生物曲霉对环境的污染,即,黄曲霉毒素B1在东南亚和撒哈拉以南非洲几乎无法控制,缺乏处理资源和受控存储设施。易感染黄曲霉毒素的饮食主食引起的急性黄曲霉毒素中毒可引起急性肝坏死,急性肝功能衰竭,和死亡。这里,越便宜,更直接,和方便的现场诊断试剂盒是必要的,我们报告了一种基于氟化乙丙橡胶薄膜条的紫外激发光学传感器。适体的分子动力学。AFB1复合物显示AFB1对适体的整体结构稳定性增加,这表明适体设计适合于预期的应用。在各种影响因素下,拟议的无标签策略提供了快速20分钟的现场制造简单性和19天的保质期。一锅孵育提供了催化检测的替代方案,并表现出4倍的可重用性。粗红糖的回收,花生加工,长粒水稻为102.74±0.41(n=3),86.90±3.38(n=3),98.50±0.42(n=3),与高效液相色谱-光电二极管阵列检测器结果相当。这项研究是新颖的,因为它具有独特的紫外线活性光谱指纹和疏水性薄膜条的便捷使用,可以促进突破性的创新和环境污染物现场/法医检测的新前沿。
    The environmental contamination by extremophile Aspergillus species, i.e., Aflatoxin B1, is hardly controllable in Southeast Asia and Sub-Saharan Africa, which lack handling resources and controlled storage facilities. Acute aflatoxicosis poisoning from aflatoxin-prone dietary staples could cause acute hepatic necrosis, acute liver failure, and death. Here, as the cheaper, more straightforward, and facile on-site diagnostic kit is needed, we report an ultraviolet-excitable optical aptasensor based on a fluorinated ethylene propylene film strip. Molecular dynamics on the aptamer.AFB1 complex revealed that the AFB1 to the aptamer increases the overall structural stability, suggesting that the aptamer design is suitable for the intended application. Under various influencing factors, the proposed label-free strategy offers a fast 20-min on-site fabrication simplicity and 19-day shelf-life. The one-pot incubation provides an alternative to catalytic detection and exhibited 4 times reusability. The recovery of crude brown sugar, processed peanuts, and long-grain rice were 102.74 ± 0.41 (n = 3), 86.90 ± 3.38 (n = 3), and 98.50 ± 0.42 (n = 3), comparable to High-Performance Liquid Chromatography-Photodiode Array Detector results. This study is novel owing to the peculiar UV-active spectrum fingerprint and the convenient use of hydrophobic film strips that could promote breakthrough innovations and new frontiers for on-site/forensic detection of environmental pollutants.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    估计验尸间隔(PMI)是法医调查中必不可少的步骤,特别是那些涉及凶杀和目击死亡的人。然而,传统方法偶尔会产生不一致的估计。组织学和分子技术在法医病理学中被认为是至关重要的,并且经常被用来估计死亡的时间间隔。牙龈是用于估计PMI的口腔粘膜组织。这篇综述旨在研究组织学方法使用口腔粘膜组织确定PMI的潜力,即牙龈,并研究与正常组织相比,口腔粘膜组织在不同时间间隔发生的变化。口腔粘膜包括分层的鳞状上皮和结缔组织层。类似于其他身体组织,已知死亡后牙龈发生改变,这些细胞和组织的变化也应该被考虑。牙龈的改变包括均质化,karyorrhexis,固缩症,核溶解,染色质聚集,嗜酸性粒细胞增多,胶原纤维降解,和组织结构的丧失。整理原始试验结果的评论一致报道了口腔粘膜如何因自溶而改变,以及如何在死亡后的组织学组织形态中观察到这种变化。组织学是用于估计PMI的可接受的精确技术。
    Estimating the post-mortem interval (PMI) is an essential step in forensic investigations, particularly those involving homicides and unwitnessed deaths. However, traditional methods occasionally yield inconsistent estimates. Histological and molecular techniques are considered crucial in forensic pathology and are frequently employed to estimate the time interval of death. The gingiva is an oral mucosal tissue used to estimate PMI. This review aimed to examine the potential of histological methods to determine PMI using oral mucosal tissue, namely the gingiva, and to investigate changes that occur in oral mucosal tissue at different time intervals when compared with those in normal tissues. The oral mucosa comprises layers of stratified squamous epithelium and connective tissue. Similar to other body tissues, changes are known to occur in the gingiva after death, and these cellular and tissue changes should also be considered. Alterations in the gingiva include homogenisation, karyorrhexis, pyknosis, karyolysis, chromatin clumping, eosinophilia, collagen fibre degradation, and the loss of tissue architecture. Reviews collating the results of original trials have consistently reported how the oral mucosa is altered by autolysis and how such changes can be observed in histological tissue morphology after death. Histology is an acceptably accurate technique for estimating PMIs.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    印刷文件是法医文件检查中常见的证据形式。光谱学与化学计量学的结合已经发展出印刷油墨的证据分析解释。然而,我们报告了有史以来的第一项研究,该研究探索了结合探索性主成分分析(PCA)和监督技术对黑色和彩色印刷文档的检查。类类比的软独立建模(SIMCA)和偏最小二乘判别分析(PLS-DA)。该研究使用ATR-FTIR调查了74个(40个基于墨水的和34个基于色调的)彩色印刷文件样品,以使用非破坏性方法来区分和确定未知印刷文件的来源。ATR-FTIR定性分析表明聚苯乙烯的存在,双酚A和丙烯酸酯作为样品中常见的粘合剂聚合物。该研究还能够获得色素信息,例如品红色中PR57和PR146的存在,炭黑黑色,青色中的铜酞菁和PB15和黄色印刷样品中的PY74。Further,PCA已被用作一种探索性技术,该技术在数据集中显示出97%的方差,并表明青色有助于最大的分类精度。SIMCA已被用作监督方法,将已知样品和测试样品分类为它们各自定义的类别。然而,SIMCA只能将基于调色剂的样品分类到它们各自的类别中,并且在基于油墨的样品的情况下获得不确定的结果。最后,PLS-DA还用于对两类样品进行分类,其辨别准确率为98.6%。导出的模型还用于对提供100%分类结果的盲测试样品的验证研究。
    Printed documents are a common form of evidence in forensic document examination. The integration of spectroscopy with chemometrics have evolved evidential analytical interpretation of printing inks. However, we report the first ever study that explores the examination of both black and colored printed documents combined with explorative Principal Component Analysis (PCA) and supervised techniques viz. Soft independent modelling of class analogy (SIMCA) and Partial Least Square- Discriminant Analysis (PLS-DA). The study investigated 74 (40 Ink-based and 34 Toner- based) colored printed document samples using ATR-FTIR to discriminate and determine the source of origin of an unknown printed document using a non-destructive approach. Qualitative analysis by ATR- FTIR indicated the presence of polystyrene, bisphenol A and acrylates as the common binder polymers in the samples. The study was also able to obtain pigment information like presence of PR 57 and PR 146 in magenta, Carbon black in black, Copper Phthalocyanine and PB 15 in Cyan and PY 74 in yellow colored printed samples. Further, PCA has been used as an explorative technique that showed a variance of 97 % in the dataset and indicating that the color Cyan contributes to the maximum classification accuracy. SIMCA has been used as a supervised method to classify the known and test samples to their respective defined classes. However, SIMCA could only classify Toner-based samples in their respective class and inconclusive results were obtained in case of Ink-based samples. Finally, PLS-DA was also used to classify the two class of samples which resulted in a discrimination accuracy of 98.6 %. The derived model was also used for validation study on blind test samples which provided 100 % classification results.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

公众号