Eight Days of Earth Reambulation Worsen Bone Loss Induced by 1-Month Spaceflight in the Major Weight-Bearing Ankle Bones of Mature Mice
Spaceflight induces bone alterations with site-specific rates of bone loss according to the weight-bearing function of the bone. For the first time, this study aimed to characterize bone microarchitecture and density alterations of three ankle bones (calcaneus, navicular, and talus) of mice after sp...
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Frontiers Media S.A.
2018-06-01
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| Series: | Frontiers in Physiology |
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| Online Access: | https://www.frontiersin.org/article/10.3389/fphys.2018.00746/full |
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| author | Maude Gerbaix Maude Gerbaix Heather White Guillaume Courbon Boris Shenkman Guillemette Gauquelin-Koch Laurence Vico |
| author_facet | Maude Gerbaix Maude Gerbaix Heather White Guillaume Courbon Boris Shenkman Guillemette Gauquelin-Koch Laurence Vico |
| author_sort | Maude Gerbaix |
| collection | DOAJ |
| description | Spaceflight induces bone alterations with site-specific rates of bone loss according to the weight-bearing function of the bone. For the first time, this study aimed to characterize bone microarchitecture and density alterations of three ankle bones (calcaneus, navicular, and talus) of mice after spaceflight and to evaluate the impact of 8 days of Earth reambulation. Ten C57BL/6N male 4-month-old mice flew on the Bion-M1 biosatellite for 1 month; half were euthanized within 24-h of return and half after 8-days recovery on Earth. Bone microarchitecture and quality was assessed by microtomography (μCT). Whole calcaneus bone volume fraction decreased in Flight group (−6.4%, p < 0.05), and worsened in the Recovery group (−11.08%, p < 0.01), when compared to Control group. Navicular and talus trabecular bone volume fraction showed trends toward decrease in Flight and differences reached statistical significance in Recovery group (−8.16%; −8.87%, respectively; p < 0.05) when compared to Control group. At calcaneus, cortical thickness decreased in Recovery vs. Control groups (−11.69%; p < 0.01). Bone surface area, reflecting periosteal bone erosion, significantly increased in all bone sites analyzed. Qualitative analyses of 3-D bone reconstruction revealed local sites of cortical thinning and bone erosion, predominantly at articulations, muscle insertions, and ground contact bone sites. Overall, spaceflight-induced bone loss in ankle bones was site and compartment specific whilst the tissue mineral density of the remaining bone was preserved. Eight days after landing, bone status worsened as compared to immediate return. |
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| issn | 1664-042X |
| language | English |
| last_indexed | 2024-12-23T23:17:22Z |
| publishDate | 2018-06-01 |
| publisher | Frontiers Media S.A. |
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| series | Frontiers in Physiology |
| spelling | doaj.art-aeb60428726a4dbe8507337c2894053e2022-12-21T17:26:28ZengFrontiers Media S.A.Frontiers in Physiology1664-042X2018-06-01910.3389/fphys.2018.00746355529Eight Days of Earth Reambulation Worsen Bone Loss Induced by 1-Month Spaceflight in the Major Weight-Bearing Ankle Bones of Mature MiceMaude Gerbaix0Maude Gerbaix1Heather White2Guillaume Courbon3Boris Shenkman4Guillemette Gauquelin-Koch5Laurence Vico6French National Center for Space Studies, Paris, FranceINSERM, UMR 1059, University of Lyon, Jean Monnet University, Saint-Étienne, FranceINSERM, UMR 1059, University of Lyon, Jean Monnet University, Saint-Étienne, FranceINSERM, UMR 1059, University of Lyon, Jean Monnet University, Saint-Étienne, FranceInstitute for Biomedical Problems, Russian Academy of Sciences, Moscow, RussiaFrench National Center for Space Studies, Paris, FranceINSERM, UMR 1059, University of Lyon, Jean Monnet University, Saint-Étienne, FranceSpaceflight induces bone alterations with site-specific rates of bone loss according to the weight-bearing function of the bone. For the first time, this study aimed to characterize bone microarchitecture and density alterations of three ankle bones (calcaneus, navicular, and talus) of mice after spaceflight and to evaluate the impact of 8 days of Earth reambulation. Ten C57BL/6N male 4-month-old mice flew on the Bion-M1 biosatellite for 1 month; half were euthanized within 24-h of return and half after 8-days recovery on Earth. Bone microarchitecture and quality was assessed by microtomography (μCT). Whole calcaneus bone volume fraction decreased in Flight group (−6.4%, p < 0.05), and worsened in the Recovery group (−11.08%, p < 0.01), when compared to Control group. Navicular and talus trabecular bone volume fraction showed trends toward decrease in Flight and differences reached statistical significance in Recovery group (−8.16%; −8.87%, respectively; p < 0.05) when compared to Control group. At calcaneus, cortical thickness decreased in Recovery vs. Control groups (−11.69%; p < 0.01). Bone surface area, reflecting periosteal bone erosion, significantly increased in all bone sites analyzed. Qualitative analyses of 3-D bone reconstruction revealed local sites of cortical thinning and bone erosion, predominantly at articulations, muscle insertions, and ground contact bone sites. Overall, spaceflight-induced bone loss in ankle bones was site and compartment specific whilst the tissue mineral density of the remaining bone was preserved. Eight days after landing, bone status worsened as compared to immediate return.https://www.frontiersin.org/article/10.3389/fphys.2018.00746/fullmicrogravityrecoveryankle bonesBion-M1micemicroarchitecture |
| spellingShingle | Maude Gerbaix Maude Gerbaix Heather White Guillaume Courbon Boris Shenkman Guillemette Gauquelin-Koch Laurence Vico Eight Days of Earth Reambulation Worsen Bone Loss Induced by 1-Month Spaceflight in the Major Weight-Bearing Ankle Bones of Mature Mice Frontiers in Physiology microgravity recovery ankle bones Bion-M1 mice microarchitecture |
| title | Eight Days of Earth Reambulation Worsen Bone Loss Induced by 1-Month Spaceflight in the Major Weight-Bearing Ankle Bones of Mature Mice |
| title_full | Eight Days of Earth Reambulation Worsen Bone Loss Induced by 1-Month Spaceflight in the Major Weight-Bearing Ankle Bones of Mature Mice |
| title_fullStr | Eight Days of Earth Reambulation Worsen Bone Loss Induced by 1-Month Spaceflight in the Major Weight-Bearing Ankle Bones of Mature Mice |
| title_full_unstemmed | Eight Days of Earth Reambulation Worsen Bone Loss Induced by 1-Month Spaceflight in the Major Weight-Bearing Ankle Bones of Mature Mice |
| title_short | Eight Days of Earth Reambulation Worsen Bone Loss Induced by 1-Month Spaceflight in the Major Weight-Bearing Ankle Bones of Mature Mice |
| title_sort | eight days of earth reambulation worsen bone loss induced by 1 month spaceflight in the major weight bearing ankle bones of mature mice |
| topic | microgravity recovery ankle bones Bion-M1 mice microarchitecture |
| url | https://www.frontiersin.org/article/10.3389/fphys.2018.00746/full |
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