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321496 occurrences (No.66 in the rank) during 5 years in the PubMed. [no cache] 500 found

336) This treatment stably detected significant differences: old mice did not maintain reduced oxygen consumption under OxR during both test periods, whereas adult mice did.

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PMID:24615069 DOI:10.1093/gerona/glu027

2015 The journals of gerontology. Series A, Biological sciences and medical sciences

* Assessment of metabolic flexibility of old and adult mice using three noninvasive, indirect calorimetry-based treatments.

- Indirect calorimetry (InCa) can potentially be used to noninvasively assess metabolic and age-related flexibility. To assess the use of InCa for this purpose, we tested the sensitivity and response stability over time of three InCa-based treatments in old versus adult mice. Diurnal patterns of respiratory exchange ratio were followed for 24 hours under standard conditions (Treatment 1), but the results were not stable between test periods. As a challenge, fasted mice received glucose to test switch-effectiveness from fat to glucose oxidation (Treatment 2). No differences between groups were observed, although old mice showed higher adiposity and lower white adipose tissue (WAT) mitochondrial density, indicative of age-impaired metabolic health. Lastly, adaptation to a challenge of oxygen restriction (OxR, 14.5% O2) was assessed as a novel approach (Treatment 3). This treatment stably detected significant differences: old mice did not maintain reduced oxygen consumption under OxR during both test periods, whereas adult mice did. Further biochemical and gene expression analyses showed that OxR affected glucose and lactate homeostasis in liver and WAT of adult mice, supporting the observed differences in oxygen consumption. In conclusion, InCa analysis of the response to OxR in mice is a sensitive and reproducible treatment to noninvasively measure age-impaired metabolic health.

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(1)95 the	(18)4 these	(35)2 axial	(52)2 of
(2)13 different	(19)3 high	(36)2 censoring	(53)2 optimal
(3)12 a	(20)3 investigation	(37)2 clinical	(54)2 physiological
(4)9 general	(21)3 light	(38)2 consideration	(55)2 pulsatile
(5)8 both	(22)3 local	(39)2 controlled	(56)2 scanning
(6)8 which	(23)3 mechanical	(40)2 current	(57)2 serum-free
(7)7 various	(24)2 null	(41)2 evaluation	(58)2 several
(8)6 conditions	(25)2 12	(42)2 ex	(59)2 simulated
(9)6 curve	(26)2 15	(43)2 extreme	(60)2 specific
(10)6 static	(27)2 2	(44)2 four	(61)2 steady-state
(11)5 and	(28)2 CA	(45)2 hypertensive	(62)2 therapy
(12)4 5	(29)2 CT	(46)2 hypoxia	(63)2 this
(13)4 certain	(30)2 H2O2-induced	(47)2 hypoxic	(64)2 time
(14)4 control	(31)2 UV	(48)2 inflammatory	(65)2 treatment
(15)4 either	(32)2 acute	(49)2 laser	(66)2 ultrasound
(16)4 in	(33)2 additive	(50)2 lateral	(67)2 vertical
(17)4 normal	(34)2 adverse	(51)2 mortality	(68)2 water

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--- WordNet output for under --- =>以下の, (治療, 試練, 刑罰)を受けて, 下部の, の下に, ・・の下に Overview of adj under The adj under has 2 senses (first 2 from tagged texts) 1. (2) nether, under -- (located below or beneath something else; "nether garments"; "the under parts of a machine") 2. (1) under -- (lower in rank, power, or authority; "an under secretary") Overview of adv under The adv under has 8 senses (first 1 from tagged texts) 1. (2) under -- (down to defeat, death, or ruin; "their competitors went under") 2. under -- (through a range downward; "children six and under will be admitted free") 3. under -- (into unconsciousness; "this will put the patient under") 4. under -- (in or into a state of subordination or subjugation; "we must keep our disappointment under") 5. under -- (below some quantity or limit; "fifty dollars or under") 6. under -- (below the horizon; "the sun went under") 7. under -- (down below; "get under quickly!") 8. under, below -- (further down; "see under for further discussion") --- WordNet end ---