Dried Plum Diet Prevents Bone Loss Caused by Ionizating Radiation: Reduces Pro-Resorption Cytokine Expression, and Protects Marrow-Derived OsteoprogenitorsFuture long duration missions outside the protection of the Earth's magnetosphere, or unshielded exposures to solar particle events, achieves total doses capable of causing cancellous bone loss. Cancellous bone loss caused by ionizing radiation occurs quite rapidly in rodents: Initially, radiation increases the number and activity of bone-resorbing osteoclasts, followed by decrease in bone forming osteoblast cells. Here we report that Dried Plum (DP) diet completely prevented cancellous bone loss caused by ionizing radiation (Figure 1). DP attenuated marrow expression of genes related to bone resorption (Figure 2), and protected the bone marrow-derived pre-osteoblasts ex vivo from total body irradiation (Figure 3). DP is known to inhibit resorption in models of aging and ovariectomy-induced osteopenia; this is the first report that dietary DP is radioprotective.
Document ID
20190027607
Acquisition Source
Ames Research Center
Document Type
Poster
Authors
Schreurs, A.-S. (Oak Ridge Associated Universities (ORAU) Moffett Field, CA, United States)
Shirazi-Fard, Y. (Wyle Labs., Inc. Moffett Field, CA, United States)
Zaragoza, J. (Blue Marble Space Seattle, WA, United States)
Alwood, J. S. (NASA Ames Research Center Moffett Field, CA, United States)
Tahimic, C. G. T. (Wyle Labs., Inc. Moffett Field, CA, United States)
Halloran, B. (California Univ. San Francisco, CA, United States)
Globus, R. K. (NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
July 23, 2019
Publication Date
January 8, 2016
Subject Category
Life Sciences (General)
Report/Patent Number
ARC-E-DAA-TN28133
Meeting Information
Meeting: NASA Human Research Program Investigators’ Workshop (HRP IWS 2016)