The ARRIVE Essential 10 and The Recommended Set: Author Checklist
Description
This ARRIVE 2.0 Checklist is designed to ensure transparent and comprehensive reporting of studies involving animals as research specimens. It provides a structured framework covering study design, methodology, ethical considerations, and data interpretation, enabling reproducibility and clarity in animal-based research. The checklist accompanies a study investigating the effects of flunitrazepam (Rohypnol) on liver decomposition, using pigs (Sus Scrofa L.) as forensic models. The research hypothesizes that flunitrazepam delays enzymatic autolysis, impacting postmortem interval (PMI) estimation. The study involved two pigs—one control and one experimental (administered 2 mg flunitrazepam in 250 ml vodka)—with daily liver tissue sampling over 16 days. Samples were preserved in 10% neutral buffered formalin and analyzed using Hematoxylin and Eosin (H&E) and Masson's trichrome staining. Findings show that flunitrazepam significantly slowed early liver decomposition, delaying autolysis and nuclear breakdown within the first six days. By day seven, decomposition rates in both groups aligned, with complete structural disintegration by day 16. These results emphasize the importance of considering drug effects when estimating PMI in forensic cases. By standardizing study reporting, this checklist ensures that key methodological details—such as randomization, blinding, ethical approvals, and statistical methods—are clearly documented. It facilitates reproducibility, ethical compliance, and improved research quality in studies using animals as experimental subjects. Researchers, forensic scientists, and pathologists can use this checklist to enhance the validity, reliability, and application of animal-based findings in forensic and biomedical research.
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Steps to reproduce
This checklist is designed to ensure transparent reporting of animal-based research, particularly in studies involving histopathological analysis of decomposition. The following steps outline how to reproduce and apply this checklist to similar studies. Template The ARRIVE Essential 10 checklist template can be obtained from their website: https://arriveguidelines.org/. To complete the checklist, the following information should be filled out based on the research study: Study Design and Planning Clearly define the research hypothesis, objectives, and study rationale. Identify animal models, specifying species, age, weight, and experimental conditions. Determine the experimental and control groups and outline the criteria for inclusion/exclusion. Ethical Approvals and Compliance Obtain approval from a relevant ethical review committee, including protocol numbers if applicable. Ensure compliance with animal welfare guidelines and document any measures taken to minimize distress. Methodology Documentation Describe randomization, blinding, and allocation methods if applicable. Provide a detailed experimental procedure, including drug administration, euthanasia methods, sample collection, and preservation techniques. Specify sample size determination and whether statistical calculations were performed. Data Collection and Analysis Clearly define outcome measures (e.g., histopathological changes, PMI estimation). Document instruments, reagents, and protocols used, ensuring reproducibility. Describe statistical methods used for data analysis, if applicable. Results Reporting Summarize findings with descriptive statistics, highlighting key observations. Address limitations, potential biases, and generalizability to other models. Data Availability and Declaration of Interests Provide information on where study data can be accessed for validation. Declare any conflicts of interest and funding sources. By following these steps, researchers can reproduce, apply, and refine the ARRIVE 2.0 checklist for transparent and high-quality animal research reporting.
Institutions
- University of Nairobi