scholarly journals Comparisons and Trends in White-tailed Deer, Odocoileus virginianus, Body Fat in Northeastern Minnesota, 1974-1990

2008 ◽  
Vol 122 (3) ◽  
pp. 253 ◽  
Author(s):  
Kerry L. Nicholson ◽  
William J. Peterson ◽  
Warren B. Ballard
Keyword(s):  
Bone Marrow ◽  
Odocoileus Virginianus ◽  
Body Fat ◽  
Fat Content ◽  
Marrow Fat ◽  
Late Autumn ◽  
Bone Marrow Fat ◽  
Lower Back ◽  
Kidney Fat ◽  
Causes Of Mortality

The relationships among locations of body fats have not been thoroughly examined in White-tailed Deer (Odocoileus virginianus). We measured bone marrow fat (n = 2995), back fat (n = 1018), kidney fat (n = 2076), and xiphoid fat (n = 1246) levels of White-tailed Deer kills from Cook and Lake counties in northeastern Minnesota during 1974-1990. For each dead deer we determined age, sex, date, and causes of mortality. All of the fat measures were correlated to varying degrees. Generally all fat measurements peaked in late autumn and subsequently began declining and reached their lowest levels in May. Fat content was negatively correlated with winter severity. Causes of mortality included predation, poaching, accidental, unknown, and auto-collisions. Predated animals had lower bone marrow (-7.42 ± 3.92) and 0.165 ± 2.30 times lower back fat and had higher amounts of kidney fat than those killed by vehicles (0.86 ± 0.43).

Annual variation in body composition of roe deer (Capreolus capreolus) in moderate environmental conditions

1996 ◽  
Vol 74 (2) ◽  
pp. 245-253 ◽  
Author(s):  
A. J. M. Hewison ◽  
J. M. Angibault ◽  
E. Bideau ◽  
J. P. Vincent ◽  
J. Boutin ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Body Mass ◽  
Roe Deer ◽  
Capreolus Capreolus ◽  
Reproductive Activity ◽  
Late Gestation ◽  
Marrow Fat ◽  
Bone Marrow Fat ◽  
Kidney Fat ◽  
Fat Level

Patterns of growth and seasonal variation in body mass, kidney fat level, and bone marrow fat level were investigated in a roe deer population south of Paris. Size dimorphism was not apparent until the deer were 2 years of age, following a second period of rapid growth in males during spring–summer. No differences between the sexes in fat accumulation or in the periodicity of the annual fat cycle were observed. However, annual cycles of adult body mass were asynchronous between the sexes. Carcase mass was stable for much of the year, but one marked seasonal decline was observed in animals of each sex. For females (April–August) this reflected investment in late gestation and lactation, but among males (April–November) it was presumably linked to the costs of rutting. Contrary to reports for other ungulates, no over-winter decline in adult carcase mass, kidney fat level, or bone marrow fat level was observed, possibly because winters were mild. All four fat indices (kidney fat index, three bone-marrow fat indices) declined over spring–summer. This seasonal cyclicity does not match the energy requirements of reproductive activity, suggesting that the fat cycle is intrinsic, linked to seasonal metabolic variation in roe deer. We suggest that carcase mass is a more reliable index of condition in roe deer.

scholarly journals Daily leptin blunts marrow fat but does not impact bone mass in calorie-restricted mice

2016 ◽  
Vol 229 (3) ◽  
pp. 295-306 ◽  
Author(s):  
M J Devlin ◽  
D J Brooks ◽  
C Conlon ◽  
M van Vliet ◽  
L Louis ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Bone Mass ◽  
Body Mass ◽  
Body Fat ◽  
Whole Body ◽  
Body Fat Percentage ◽  
Fat Percentage ◽  
Marrow Fat ◽  
Bone Marrow Fat ◽  
Skeletal Acquisition

Starvation induces low bone mass and high bone marrow adiposity in humans, but the underlying mechanisms are poorly understood. The adipokine leptin falls in starvation, suggesting that hypoleptinemia may be a link between negative energy balance, bone marrow fat accumulation, and impaired skeletal acquisition. In that case, treating mice with leptin during caloric restriction (CR) should reduce marrow adipose tissue (MAT) and improve bone mass. To test this hypothesis, female C57Bl/6J mice were fed a 30% CR or normal (N) diet from 5 to 10 weeks of age, with daily injections of vehicle (VEH), 1mg/kg leptin (LEP1), or 2mg/kg leptin (LEP2) (N=6–8/group). Outcomes included body mass, body fat percentage, and whole-body bone mineral density (BMD) via peripheral dual-energy X-ray absorptiometry, cortical and trabecular microarchitecture via microcomputed tomography (μCT), and MAT volume via μCT of osmium tetroxide-stained bones. Overall, CR mice had lower body mass, body fat percentage, BMD, and cortical bone area fraction, but more connected trabeculae, vs N mice (P<0.05 for all). Most significantly, although MAT was elevated in CR vs N overall, leptin treatment blunted MAT formation in CR mice by 50% vs VEH (P<0.05 for both leptin doses). CR LEP2 mice weighed less vs CR VEH mice at 9–10 weeks of age (P<0.05), but leptin treatment did not affect body fat percentage, BMD, or bone microarchitecture within either diet. These data demonstrate that once daily leptin bolus during CR inhibits bone marrow adipose expansion without affecting bone mass acquisition, suggesting that leptin has distinct effects on starvation-induced bone marrow fat formation and skeletal acquisition.

Impact of pioglitazone on bone mineral density and bone marrow fat content

2017 ◽  
Vol 28 (11) ◽  
pp. 3261-3269 ◽  
Author(s):  
L. M. Pop ◽  
I. Lingvay ◽  
Q. Yuan ◽  
X. Li ◽  
B. Adams-Huet ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
Bone Marrow ◽  
Bone Mineral ◽  
Fat Content ◽  
Mineral Density ◽  
Marrow Fat ◽  
Bone Marrow Fat

scholarly journals Bone marrow fat content in the elderly: A reversal of sex difference seen in younger subjects

2012 ◽  
Vol 36 (1) ◽  
pp. 225-230 ◽  
Author(s):  
James F. Griffith ◽  
David K.W. Yeung ◽  
Heather Ting Ma ◽  
Jason Chi Shun Leung ◽  
Timothy C.Y. Kwok ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Sex Difference ◽  
The Elderly ◽  
Fat Content ◽  
Marrow Fat ◽  
Bone Marrow Fat
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