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The endoplasmic reticulum (ER) of pancreatic β-cells synthesizes preproinsulin, which consists of a signal peptide, A and B chains, and a C-peptide. Preproinsulin is then cleaved and folded into proinsulin, which translocates to the Golgi apparatus for sorting and packaging into secretory granules. In these granules, enzymatic clipping generates insulin and C-peptide.
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Insulin and the law.

Vincent Marks1

  • 1Faculty of Health an Medical Sciences, University of Surrey, Guildford, UK vincentmarks@btinternet.com.

Annals of Clinical Biochemistry
|June 21, 2015
PubMed
Summary
This summary is machine-generated.

Hypoglycaemia can be a defense in criminal cases if neuroglycopenic automatism is proven. Insulin misuse, including with analogues, presents detection challenges for forensic investigators.

Keywords:
Immunoassaydrugsmass spectrometrymurdersuicide

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Area of Science:

  • Forensic Toxicology
  • Endocrinology
  • Criminal Law

Background:

  • Hypoglycaemia (low blood glucose) can induce neuroglycopenic automatism, potentially negating criminal responsibility.
  • Exogenous insulin can be misused as a substance for suicide or homicide.
  • Investigating suspected insulin misuse in forensic contexts is complex.

Observation:

  • The increasing prevalence of insulin analogues complicates their detection and measurement.
  • Immunoassays may be unreliable for identifying and quantifying insulin analogues in forensic samples.
  • Establishing hypoglycaemic automatism requires rigorous proof.

Findings:

  • Forensic investigators face significant challenges in detecting and proving insulin misuse, particularly with novel insulin analogues.
  • Standard immunoassay methods may not accurately detect or measure insulin analogues, hindering accurate forensic analysis.
  • The legal defense of hypoglycaemic automatism relies on demonstrating a specific neuroglycopenic state.

Implications:

  • Improved, reliable detection methods for insulin and its analogues are crucial for forensic toxicology.
  • Clearer legal and scientific protocols are needed to address insulin misuse in criminal investigations.
  • Understanding the limitations of current assays is vital for accurate interpretation of forensic evidence.