Microorganisms have always been one of the great challenges of humankind, being responsible for both high morbidity and mortality throughout history. In a forensic setting microbiological information will always be difficult to interpret due to lack of antemortem information and changes in flora postmortem. With this study we aim to review the use of microbiological procedures at our forensic institute. In a retrospective study including 42 autopsies performed at our Institute, where microbiological test had been applied, analyses were made with regard to: type of microbiological tests performed, microorganisms found, histological findings, antemortem information, C-reactive protein measurement and cause of death. Fiftyone different microorganisms were found distributed among 37 cases, bacteria being the most abundant. Nineteen of the cases were classified as having a microbiological related cause of death. C-reactive protein levels were raised in 14 cases of the 19 cases, histological findings either supported or were a decisive factor for the classification of microbiologically related cause of death in 14 cases. As a multitude of abundant microorganisms are able to cause infection under the right circumstances, all findings should be compared to anamnestic antemortem information, before conclusions are drawn. A definite list of true pathogens is nearly impossible to compile.
It was not possible to find any well-documented cases. It is, however, difficult to compare cases in the literature, as there is no generally accepted classification or nomenclature of seizures related to alcohol abuse.
In the routine clinical examination of sexual assault victims, apart from documenting physical evidence of abuse, securing evidence, typically DNA from blood, semen, or saliva, is an important part of the process. Often the presence of semen is considered a most interesting piece of evidence. Not only does it often contain enough DNA for DNA profiling, but it also strongly indicates that an actual sexual act has taken place. The examination of smear slides obtained in sexual assault cases is a time-consuming task especially for the less trained and in cases where the smear only contains few sperm cells. In this work the goal was to develop a procedure to rapidly visualize human sperm cells in smear slides with the use of bright-field microscopy. Using SPERM HY-LITER™ by Independent Forensics, human sperm cells are visualized using a fluorescently labeled mouse antibody which significantly decreases the time used to screen smears. By further using an EnVision+ (DAKO) protocol, it was possible to create an immunohistochemical staining method to visualize sperm cells in bright-field microscopy with the same level of certainty as when using SPERM HY-LITER™.
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