Testosterone does not mediate variation in basal metabolic rate and activity in relation to reproductive condition and photoperiod in white-footed mice (Peromyscus leucopus )

2019 ◽  
Vol 331 (8) ◽  
pp. 456-462
Author(s):  
Stephanie P. McDonnell ◽  
Paul A. Kaseloo ◽  
Victoria E. Wran ◽  
Paul D. Heideman
Keyword(s):  
Metabolic Rate ◽  
Basal Metabolic Rate ◽  
Peromyscus Leucopus ◽  
Reproductive Condition

Variation in basal metabolic rate and activity in relation to reproductive condition and photoperiod in white-footed mice (Peromyscus leucopus)

2012 ◽  
Vol 90 (5) ◽  
pp. 602-615 ◽  
Author(s):  
P.A. Kaseloo ◽  
M.G. Crowell ◽  
J.J. Jones ◽  
P.D. Heideman
Keyword(s):  
Metabolic Rate ◽  
Basal Metabolic Rate ◽  
Energy Use ◽  
Peromyscus Leucopus ◽  
Photoperiodic Response ◽  
Life History Trait ◽  
Testis Size ◽  
Reproductive Suppression ◽  
Long Day ◽  
Significant Difference

A naturally variable life-history trait with underlying physiological variation is the photoperiodic response of many temperate-zone rodents, including white-footed mice (Peromyscus leucopus (Rafinesque, 1818)). Male P. leucopus were obtained from a short photoperiod responsive (R) line, artificially selected for reproductive suppression in short-day conditions (SD) and a nonresponsive (NR) line selected for reproductive maturity in SD. We tested for variation in metabolic rate between lines in SD and long-day conditions (LD). NR mice consumed 34% more food than R mice, without concomitant increase in body mass in SD. Basal metabolic rate (BMR) was found to be significantly greater in NR than R mice, and NR mice were found to engage in significantly more spontaneous (daily) locomotor activity. Energy-use estimates based on 24 h respirometry matched closely the level of intake reported for individual mice. The increased BMR and average daily metabolic rate in NR mice was correlated with testis size, but not with major central organs or digestibility. No significant difference in BMR or activity was found in mice from the same lines held in LD. Elevated intake in SD mice appears to be associated with differences in fertility and not other aspects of physiology in the respective lines.

Development of new predictive equations for basal metabolic rate in Iranian healthy adults: negligible effect of sex

2020 ◽  
pp. 1-10
Author(s):  
Bahareh Nikooyeh ◽  
Nastaran Shariatzadeh ◽  
Ali Kalayi ◽  
Maliheh Zahedirad ◽  
Tirang R. Neyestani
Keyword(s):  
Metabolic Rate ◽  
Thyroid Function ◽  
Basal Metabolic Rate ◽  
Age Groups ◽  
Thyroid Function Tests ◽  
Anthropometric Measures ◽  
Predictive Equations ◽  
Normal Thyroid Function ◽  
Asian People ◽  
Predictive Formulas

Abstract. Some studies have reported inaccuracy of predicting basal metabolic rate (BMR) by using common equations for Asian people. Thus, this study was undertaken to develop new predictive equations for the Iranian community and also to compare their accuracy with the commonly used formulas. Anthropometric measures and thyroid function were evaluated for 267 healthy subjects (18–60 y). Indirect calorimetry (InCal) was performed only for those participants with normal thyroid function tests (n = 252). Comparison of predicted RMR (both kcal/d and kcal.kg.wt−1.d−1) using current predictive formulas and measured RMR revealed that Harris-Benedict and FAO/WHO/UNU significantly over-estimated and Mifflin-St. Jeor significantly under-estimated RMR as compared to InCal measurements. In stepwise regression analysis for developing new equations, the highest r2 (=0.89) was from a model comprising sex, height and weight. However, further analyses revealed that unlike the subjects under 30 y, the association between age and the measured RMR in subjects 30 y and plus was negative (r = −0.241, p = 0.001). As a result, two separate equations were developed for these two age groups. Over 80 percent of variations were covered by the new equations. In conclusion, there were statistical significant under- and over-estimation of RMR using common predictive equations in our subjects. Using the new equations, the accuracy of the calculated RMR increased remarkably.

COMBINATION OF POTASSIUM PERCHLORATE AND PROPYLTHIOURACIL IN THE TREATMENT OF THYROTOXICOSIS

1968 ◽  
Vol 57 (4) ◽  
pp. 565-577 ◽  
Author(s):  
K. E. Røkke ◽  
J. H. Vogt
Keyword(s):  
Drug Therapy ◽  
Side Effects ◽  
Metabolic Rate ◽  
Total Cholesterol ◽  
Basal Metabolic Rate ◽  
Combined Therapy ◽  
Combined Treatment ◽  
Control Measures ◽  
Potassium Perchlorate ◽  
Plasma Total Cholesterol

ABSTRACT A report is given on 95 thyrotoxic patients treated with a combination of 400 mg propylthiouracil and 400 mg of potassium perchlorate. Perchlorate was stopped when a marked remission of symptoms was obtained, on an average after less than 7 weeks. Euthyroidism was found on an average after 7.2 weeks. The basal metabolic rate, PBI, plasma total cholesterol and weight showed a fairly rapid normalization. Thirteen of the 95 patients were given radio-iodine therapy shortly before drug therapy was started. The remaining 82 cases were grouped together with the 23 cases previously reported. Of the total of 105 cases, 96 became euthyroid on combined therapy. For the frequency of side-effects, the thirteen cases mentioned above were included, giving a total of 118 cases. Eight cases showed an increase in goitre size and 15 cases had other side-effects, of which three were granulocytopenia due to propylthiouracil. The possibility of a higher frequency of mainly minor side-effects on combined therapy has to be balanced against the seemingly rapid and reliable therapeutic effect. Combined treatment, perhaps with even smaller doses than reported here, can be recommended in selected cases of thyrotoxicosis where a shortening of the thyrotoxic state seems of importance, or possibly where difficulties due to iodine exposure may be anticipated, provided adequate control measures are taken.

Can night eating syndrome increase basal metabolic rate?

2017 ◽  
Author(s):  
Senay Topsakal ◽  
Guzin Fidan Yaylalı ◽  
Semin Melahat Fenkci
Keyword(s):  
Metabolic Rate ◽  
Basal Metabolic Rate ◽  
Night Eating Syndrome ◽  
Night Eating

Metabolic Age, an Index Based on Basal Metabolic Rate, Can Predict Individuals That are High Risk of Developing Metabolic Syndrome

2021 ◽  
Author(s):  
Sarahi Vásquez-Alvarez ◽  
Sergio K. Bustamante-Villagomez ◽  
Gabriela Vazquez-Marroquin ◽  
Leonardo M. Porchia ◽  
Ricardo Pérez-Fuentes ◽  
...  
Keyword(s):  
Metabolic Syndrome ◽  
High Risk ◽  
Metabolic Rate ◽  
Basal Metabolic Rate ◽  
Metabolic Age

scholarly journals The decoupled nature of basal metabolic rate and body temperature in endotherm evolution

Nature ◽  
2019 ◽  
Vol 572 (7771) ◽  
pp. 651-654 ◽  
Author(s):  
Jorge Avaria-Llautureo ◽  
Cristián E. Hernández ◽  
Enrique Rodríguez-Serrano ◽  
Chris Venditti
Keyword(s):  
Body Temperature ◽  
Metabolic Rate ◽  
Basal Metabolic Rate

scholarly journals Body composition and basal metabolic rate in systemic lupus erythematosus patients

2017 ◽  
Vol 39 (2) ◽  
pp. 99-102 ◽  
Author(s):  
Z. Shamekhi ◽  
Z. Habibagahi ◽  
M. Ekramzadeh ◽  
Ata Ghadiri ◽  
F. Namjoyan ◽  
...  
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Body Composition ◽  
Metabolic Rate ◽  
Basal Metabolic Rate ◽  
Lupus Erythematosus ◽  
Systemic Lupus

INFLUENCE OF THIOURACIL ON THE BASAL METABOLIC RATE AND ON MOLTING IN HENS1

Endocrinology ◽  
1947 ◽  
Vol 41 (6) ◽  
pp. 514-517 ◽  
Author(s):  
F. SULMAN ◽  
M. PEREK
Keyword(s):  
Metabolic Rate ◽  
Basal Metabolic Rate
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