Morphometry of the respiratory tract: Avoiding the sampling, size, orientation, and reference traps

Dallas M. Hyde, Nancy K. Tyler, Charles Plopper

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

The extrapolation to humans of studies of infectious or toxic agents injurious to the respiratory system using animal models assumes comparability in the structure and function of animal models and humans. Measurement of conducting airways and parenchyma yields quantitative data for parameters like volume, surface area, length, cell number and cell size. Over the past few decades, there has been an evolution of rigorous uniform sampling designs of stereology that ensure unbiased estimates of number, length, surface area, and volume. This approach has been termed 'design-based' stereology because of the reliance on sampling design rather than geometric model-based stereology that makes assumptions. The aim of this paper is to define new design-based stereological approaches for the direct estimation of anatomical structures and epithelial, interstitial and endothelial cells of specific regions of the lung independent of the sampling, size, orientation and reference traps. An example is provided using wildtype and transgenic mice expressing transforming growth factor-α to show the importance of the reference trap in stereologic estimates of postnatal lung growth.

Original languageEnglish (US)
Pages (from-to)41-48
Number of pages8
JournalToxicologic Pathology
Volume35
Issue number1
DOIs
StatePublished - Jan 2007

Fingerprint

Respiratory System
Animal Models
Sampling
Lung
Poisons
Transforming Growth Factors
Cell Size
Transgenic Mice
Animals
Endothelial Cells
Cell Count
Epithelial Cells
Respiratory system
Endothelial cells
Growth
Extrapolation

Keywords

  • Conducting airways
  • Dissector
  • Fractionator
  • In vivo imaging
  • Statistical variability
  • Stereology

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Toxicology
  • Health, Toxicology and Mutagenesis

Cite this

Morphometry of the respiratory tract : Avoiding the sampling, size, orientation, and reference traps. / Hyde, Dallas M.; Tyler, Nancy K.; Plopper, Charles.

In: Toxicologic Pathology, Vol. 35, No. 1, 01.2007, p. 41-48.

Research output: Contribution to journalArticle

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