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Workshop
Abstracts
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W1: Forensic Toxicology of Pesticides |
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Maria Martinez, Chair |
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Half day |
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This workshop will be a discussion of pesticides in
forensic toxicology. This includes a general overview of pesticides,
analytical methods, and interpretation of analytical toxicology
findings. Pesticides are used extensively in agriculture,
commercial and industrial applications, and some of them are
resistant to degradation, as a consequence they are ubiquitous in
our environment. Incidence of poisoning with these chemicals will be
also considered. A series of clinical and forensic cases involving
pesticide poisoning will be presented. Finally, diagnosis and
treatment of pesticide poisonings will be discussed. |
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W2: Interpretive Pharmacogenomics and Proteomics for Forensic
Toxicology |
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Steve Wong, Chair |
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Half
day |
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The
workshop is an update of a previous workshop. In addition to a brief
introduction to molecular biology, the workshop will include basic
principles of pharmacogenomics and the emerging proteomics. Then, a
survey of various methodologies will be included. The
pharmacogenomics of drug metabolizing enzyme genes will be reviewed,
with particular reference to those related to drugs often identified
in death certification. The session might include pre-collection of
attendees’ whole blood with informed consent, followed by
genotyping. The de-identified results will be included in the
presentation in order to demonstrate mutation prevalency in a
selected population – the attendees. The workshop will conclude with
selected case review with pharmacogenomics. |
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W3:
Blood Alcohol Concentration Extrapolation
Workshop |
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Jennifer F. Limoges, Chair |
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Half day |
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This half-day
workshop will cover all aspects of BAC extrapolation. The
pharmacokinetics of ethanol will be reviewed in depth, including
calculations for estimating BAC under a variety of
circumstances. Factors that may effect BAC estimations will be
covered, along with an update of the legal issues surrounding
this type of testimony. The workshop will conclude with an open
discussion on some challenging case scenarios. Extensive
reference materials will be provided. |
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| W4:
Receptor Site Theory and Drug Interactions |
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Robert Sears, Chair |
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Half
day |
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The SOFT Continuing Education Committee presents a
Workshop on Receptor Site Theory and Drug Interactions. This
workshop is designed for the toxicologist working in a post-mortem
or human performance settings. The participant will have a better
understanding of various receptor sites in the body, physiological
effects mediated by these receptors, and which drugs act as agonist
or antagonist at these sites. As a result the toxicologist will
better be able to assist coroners, medical examiners, and
prosecutors with interpretation of the toxicology results especially
as these results relate to multiple drug interactions and prediction
of adverse side effects. The workshop will include a review of
information related to the characterization of select receptor
sites, specific information as to the location of and the
physiological effects mediated by the receptor, information on
specific drugs or poisons known to act at the receptor, and
resultant physiological changes due to drug-receptor interactions. |
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| W5:
Oral Fluids – Research and Application |
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Mike Wagner, Chair |
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Half day |
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The focus of this workshop will cover such topics as:
basic physiology, drug transport mechanisms, time course profiles,
interpretation issues (pharmacodynamic and behavorial observations),
matrix correlations (oral fluid, blood, urine, and site
contamination), analytical issues (stability, sample preparation,
and instrumental analysis), and field evaluation studies. |
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| W6:
Forensic Toxicology Update |
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John Cody, Chair |
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Full day |
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This workshop will describe the analysis of drugs and
alcohol from the perspective of post-mortem, DUID and workplace drug
testing. The format will include a quick review followed by
pertinent updates describing new information and techniques in the
area. Topics covered will include each of the major drug classes and
ethanol. Presentations will include a brief review of the
pharmacology of the drug (class) followed by description of the
analysis of samples and interpretation of results. Specific examples
of particular interest to the forensic toxicology community will be
presented by experienced practitioners with the ability to provide
some insights borne of years of experience in the field. In
addition, discussion of emerging procedures and technologies will
provide a glimpse of the future of forensic toxicology.
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| W7:
From “Sample to Signal; Practical LC/MSn": An
introduction to fundamental LC/MS/MS technologies and practical
practices in Forensic Toxicology |
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Chip Walls, Chair |
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Half day |
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This workshop provides an understanding of the key
components of LC/MSn instrumentation, operation,
advantageous features, and the information derived from analysis.
The conversion of LC/UV methods to LC/MSn will be
covered. Performance characteristics of mass analyzers and LC/MSn
interfaces are described. Forensic applications of LC/MSn
will be highlighted. |
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W8:
The Postmortem “Blood Drug Screen”: Analytical and Managerial
Approaches |
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Al Poklis, Chair |
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Full day |
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In the modern postmortem toxicology laboratory, the
“Blood Drug Screen” is the most important analytical scheme to
identify drugs that may be the cause of death or significantly
influence the circumstances surrounding a death. This workshop will
present in detail the analytical produces in seven major postmortem
toxicology laboratories. Formal lectures will address specific
immunoassay tests and chromatographic methods including sample
preparation, chromatographic conditions, calibrations and quality
control procedures. At the completion of these presentations a
round-table discussion will address the managerial rational of how
each laboratory applies it’s particular analytical scheme in meeting
the service objective of the laboratory. The round-table discussion
will focus on management issues such as; result reporting criteria,
personnel and laboratory resources, turn-around time and other
issues. |
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W9:
Post Mortem Interpretation |
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Ann Marie Gordon & Rebecca Jufer, Chair |
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Full day |
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The SOFT Continuing Education presents a Workshop on
Post Mortem Interpretation. The workshop is designed for the
toxicologist working in a post-mortem setting and the participant
will better be able to assist coroners and medical examiners with
interpretation of the toxicology results. The workshop will include
a review of pharmacokinetics, including how to calculate total body
burden and what to do with the numbers. A discussion of post-mortem
redistribution and other post-mortem changes will include an
emphasis on newer antidepressants and opioids as well as how to
compare the numbers in Baselt and Winek with data produced by your
own lab. A review of drug-drug interactions will emphasize these
phenomena in drug combination deaths. Also included will be a
discussion of alternative tissues, which tissues are likely to yield
the best information for different kinds of investigations and how
to interpret the data obtained from these tissues. |
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W10:
Case Studies in DUID: Numbers, Signs, Symptoms and Beyond |
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Michelle Spirk & Sarah Kerrigan, Chair |
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Full day (2 days) |
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Driving under the
influence of drugs (DUID) is of growing concern among the
scientific, legal, law enforcement and public health communities.
Although statutory schemes vary from state to state, toxicologists
are often called upon to provide interpretive testimony in DUID
cases. Pharmacology and behavioral toxicology studies provide the
foundation for this, and these areas have been the focus of many
earlier workshops and seminars on DUID.
The purpose of
this workshop is to highlight common interpretive issues using
actual case studies. The presenters will apply their
knowledge of drug pharmacology and behavioral toxicology in a
case-oriented fashion. Driving behavior, observed effects and
toxicology results will be presented for commonly encountered drugs
including cannabinoids, methamphetamine, cocaine, opioids and
central nervous system depressants. The workshop is intended to
bridge the gap between the scientific literature and actual DUID
casework. Toxicologists must be able to apply the scientific
knowledge that exists to uncontrolled and non-scientific
surroundings encountered in casework (urban and rural roadways)
where environmental factors, injuries, drug combinations and other
challenges are commonplace. Presenters will outline how to implement
best practices and discuss interpretive limitations relating to
matrix, delay in specimen collection, qualitative versus
quantitative data as well as field observations and evaluations.
Interpretative strategies and approaches will be discussed in
addition to laboratory policies and guidelines that facilitate
scientific testimony in a fair, objective and scientifically
justified manner.
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