title: Quantification of ceroid and lipofuscin in skeletal muscle.
abstract: Ceroid and lipofuscin are autofluorescent granules thought to be generated as a consequence of chronic oxidative stress. Because ceroid and lipofuscin are persistent in tissue, their measurement can provide a lifetime history of exposure to chronic oxidative stress. Although ceroid and lipofuscin can be measured by quantification of autofluorescent granules, current methods rely on subjective assessment. Furthermore, there has not been any evaluation of variables affecting quantitative measurements. The article describes a simple statistical approach that can be readily applied to quantitate ceroid and lipofuscin. Furthermore, it is shown that several factors, including magnification tissue thickness and tissue level, can affect precision and sensitivity. After optimizing for these factors, the authors show that ceroid and lipofuscin can be measured reproducibly in the skeletal muscle of dystrophic mice (ceroid) and aged mice (lipofuscin).
authors.affiliation: School of Biomedical, Biomolecular & Chemical Science, The University of Western Australia, Crawley, Western Australia.
authors.forename: Hatice
authors.initials: H
authors.lastname: Tohma
authors.forename: Anna R
authors.initials: AR
authors.lastname: Hepworth
authors.forename: Thea
authors.initials: T
authors.lastname: Shavlakadze
authors.forename: Miranda D
authors.initials: MD
authors.lastname: Grounds
authors.forename: Peter G
authors.initials: PG
authors.lastname: Arthur
mesh_terms: D000375:Aging / Q000378:metabolism; D000818:Animals; D002566:Ceroid / Q000032:analysis*; D003627:Data Interpretation, Statistical; D005260:Female; D005453:Fluorescence; D008062:Lipofuscin / Q000032:analysis*; D051379:Mice; D008810:Mice, Inbred C57BL; D018101:Mice, Inbred mdx; D020388:Muscular Dystrophy, Duchenne / Q000378:metabolism / Q000473:pathology; D052097:Quadriceps Muscle / Q000737:chemistry* / Q000473:pathology; D012680:Sensitivity and Specificity
chemical_list: D002566:Ceroid; D008062:Lipofuscin