Senescent Changes in the Kidney of the Yellow Mud Turtle Kinosternon flavescens

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Show simple item record Williams, Tanya M. 2006-12-12T14:40:23Z 2006-12-12T14:40:23Z 1996-05
dc.identifier.other 1996 .W675
dc.description [iii], 30 leaves. Advisor: James L. Christiansen en
dc.description.abstract Current literature suggests that reptiles do not undergo senescence. This study addresses age-related changes that occur in the kidneys of reptiles and compares them to senescent changes in mammalian kidneys. Kidney sections from a wild population of turtles ranging in age from 6 to 35 years were examined histologically by light and electron microscope. Kidney tubules of the older turtles showed a statistically significant greater deposition of a pigment believed to be lipofuscin or ceroid than did young turtles. Glomeruli in the oldest turtles had significantly fewer glomerular arterioles, and a significant increase in connective tissue in the glomerular tuft. Electron microscope studies indicated that glomeruli became smooth and simplified with advanced age. Foot processes lost their regular arrangement and became wider. Pedicels became irregular or degenerate. Fine structures of reptilian kidney appeared to be simpler and more organized than mammal kidney, but age-related changes were similar. en
dc.format.extent 1657638 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US
dc.publisher Drake University en
dc.relation.ispartofseries Drake University Theses, College of Arts and Sciences;1996
dc.subject Turtles en
dc.subject Kidneys en
dc.subject Aging en
dc.subject Old age en
dc.title Senescent Changes in the Kidney of the Yellow Mud Turtle Kinosternon flavescens en
dc.type Thesis en

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