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Marsh ML, Oliveira MN, Vieira-Potter VJ. Adipocyte Metabolism and Health after the Menopause: The Role of Exercise. Nutrients 2023; 15:444. [PMID: 36678314 PMCID: PMC9862030 DOI: 10.3390/nu15020444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 01/09/2023] [Accepted: 01/10/2023] [Indexed: 01/19/2023] Open
Abstract
Postmenopausal women represent an important target population in need of preventative cardiometabolic approaches. The loss of estrogen following the menopause eliminates protections against metabolic dysfunction, largely due to its role in the health and function of adipose tissue. In addition, some studies associate the menopause with reduced physical activity, which could potentially exacerbate the deleterious cardiometabolic risk profile accompanying the menopause. Meanwhile, exercise has adipocyte-specific effects that may alleviate the adverse impact of estrogen loss through the menopausal transition period and beyond. Exercise thus remains the best therapeutic agent available to mitigate menopause-associated metabolic dysfunction and represents a vital behavioral strategy to prevent and alleviate health decline in this population.
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Queathem ED, Fitzgerald M, Welly R, Rowles CC, Schaller K, Bukhary S, Baines CP, Rector RS, Padilla J, Manrique-Acevedo C, Lubahn DB, Vieira-Potter VJ. Suppression of estrogen receptor beta classical genomic activity enhances systemic and adipose-specific response to chronic beta-3 adrenergic receptor (β3AR) stimulation. Front Physiol 2022; 13:920675. [PMID: 36213237 PMCID: PMC9534559 DOI: 10.3389/fphys.2022.920675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 08/15/2022] [Indexed: 11/23/2022] Open
Abstract
White adipose tissue (WAT) dysfunction independently predicts cardiometabolic disease, yet there is a lack of effective adipocyte-targeting therapeutics. B3AR agonists enhance adipocyte mitochondrial function and hold potential in this regard. Based on enhanced sensitivity to B3AR-mediated browning in estrogen receptor (ER)alpha-null mice, we hypothesized that ERβ may enhance the WAT response to the B3AR ligand, CL316,243 (CL). Methods: Male and female wild-type (WT) and ERβ DNA binding domain knock-out (ERβDBDKO) mice fed high-fat diet (HFD) to induce obesity were administered CL (1 mg/kg) daily for 2 weeks. Systemic physiological assessments of body composition (EchoMRI), bioenergetics (metabolic chambers), adipocyte mitochondrial respiration (oroboros) and glucose tolerance were performed, alongside perigonadal (PGAT), subcutaneous (SQAT) and brown adipose tissue (BAT) protein expression assessment (Western blot). Mechanisms were tested in vitro using primary adipocytes isolated from WT mice, and from Esr2-floxed mice in which ERβ was knocked down. Statistical analyses were performed using 2 × 2 analysis of variance (ANOVA) for main effects of genotype (G) and treatment (T), as well as GxT interactions; t-tests were used to determine differences between in vitro treatment conditions (SPSS V24). Results: There were no genotype differences in HFD-induced obesity or systemic rescue effects of CL, yet ERβDBDKO females were more sensitive to CL-induced increases in energy expenditure and WAT UCP1 induction (GxT, p < 0.05), which coincided with greater WAT B3AR protein content among the KO (G, p < 0.05). Among males, who were more insulin resistant to begin with (no genotype differences before treatment), tended to be more sensitive to CL-mediated reduction in insulin resistance. With sexes combined, basal WAT mitochondrial respiration trended toward being lower in the ERβDBDKO mice, but this was completely rescued by CL (p < 0.05). Confirming prior work, CL increased adipose tissue ERβ protein (T, p < 0.05, all), an effect that was enhanced in WAT and BAT the female KO (GxT, p < 0.01). In vitro experiments indicated that an inhibitor of ERβ genomic function (PHTPP) synergized with CL to further increase UCP1 mRNA (p = 0.043), whereas full ERβ protein was required for UCP1 expression (p = 0.042). Conclusion: Full ERβ activity appears requisite and stimulatory for UCP1 expression via a mechanism involving non-classical ERβ signaling. This novel discovery about the role of ERβ in adipocyte metabolism may have important clinical applications.
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Affiliation(s)
- Eric D. Queathem
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, United States
- Department of Biochemistry, University of Missouri, Columbia, MO, United States
| | - Maggie Fitzgerald
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, United States
| | - Rebecca Welly
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, United States
| | - Candace C. Rowles
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, United States
| | - Kylie Schaller
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, United States
- Department of Biochemistry, University of Missouri, Columbia, MO, United States
| | - Shahad Bukhary
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, United States
| | - Christopher P. Baines
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO, United States
- Department of Biomedical Sciences, University of Missouri, Columbia, MO, United States
| | - R. Scott Rector
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, United States
- Internal Medicine-Division of Gastroenterology and Hepatology, University of Missouri, Columbia, MO, United States
- Research Service, Truman VA Memorial Hospital, Columbia, MO, United States
| | - Jaume Padilla
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, United States
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO, United States
| | - Camila Manrique-Acevedo
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, University of Missouri Columbia School of Medicine, Columbia, MO, United States
| | - Dennis B. Lubahn
- Department of Biochemistry, University of Missouri, Columbia, MO, United States
| | - Victoria J. Vieira-Potter
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, United States
- *Correspondence: Victoria J. Vieira-Potter,
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Cunningham RP, Moore MP, Dashek RJ, Meers GM, Jepkemoi V, Takahashi T, Vieira-Potter VJ, Kanaley JA, Booth FW, Rector RS. Hepatocyte-specific eNOS deletion impairs exercise-induced adaptations in hepatic mitochondrial function and autophagy. Obesity (Silver Spring) 2022; 30:1066-1078. [PMID: 35357089 PMCID: PMC9050943 DOI: 10.1002/oby.23414] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 01/24/2022] [Accepted: 02/11/2022] [Indexed: 12/20/2022]
Abstract
OBJECTIVE Endothelial nitric oxide synthase (eNOS) is a potential mediator of exercise-induced hepatic mitochondrial adaptations. METHODS Here, male and female hepatocyte-specific eNOS knockout (eNOShep-/- ) and intact hepatic eNOS (eNOSfl/fl ) mice performed voluntary wheel-running exercise (EX) or remained in sedentary cage conditions for 10 weeks. RESULTS EX resolved the exacerbated hepatic steatosis in eNOShep-/- male mice. Elevated hydrogen peroxide emission (~50% higher in eNOShep-/- vs. eNOSfl/fl mice) was completely ablated with EX. Interestingly, EX increased [1-14 C] palmitate oxidation in eNOSfl/fl male mice, but this was blunted in the eNOShep-/- male mice. eNOShep-/- mice had lower markers of the energy sensors AMP-activated protein kinase (AMPK)/phospho- (p)AMPK and mammalian target of rapamycin (mTOR) and p-mTOR, as well as the autophagy initiators serine/threonine-protein kinase ULK1 and pULK1, compared with eNOSfl/fl mice. Females showed elevated electron transport chain protein content and markers of mitochondrial biogenesis (transcription factor A, mitochondrial, peroxisome proliferator-activated receptor-gamma coactivator 1α). CONCLUSIONS Collectively, this study demonstrates for the first time, to the authors' knowledge, the requirement of eNOS in hepatocytes in the EX-induced increases in hepatic fatty acid oxidation in male mice. Deletion of eNOS in hepatocytes also appears to impair the energy-sensing ability of the cell and inhibit the activation of the autophagy initiating factor ULK1. These data uncover the important and novel role of hepatocyte eNOS in EX-induced hepatic mitochondrial adaptations.
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Affiliation(s)
- Rory P. Cunningham
- Research Service, Harry S Truman Memorial Veterans Medical Center, Columbia, Missouri 65212, USA
- Nutrition and Exercise Physiology, University of Missouri, Columbia, MO 65211, USA
| | - Mary P. Moore
- Research Service, Harry S Truman Memorial Veterans Medical Center, Columbia, Missouri 65212, USA
- Nutrition and Exercise Physiology, University of Missouri, Columbia, MO 65211, USA
| | - Ryan J. Dashek
- Research Service, Harry S Truman Memorial Veterans Medical Center, Columbia, Missouri 65212, USA
- Department of Veterinary Pathobiology, University of Missouri, Columbia, MO 65211, USA
| | - Grace M. Meers
- Research Service, Harry S Truman Memorial Veterans Medical Center, Columbia, Missouri 65212, USA
- Nutrition and Exercise Physiology, University of Missouri, Columbia, MO 65211, USA
| | - Vivien Jepkemoi
- Research Service, Harry S Truman Memorial Veterans Medical Center, Columbia, Missouri 65212, USA
| | - Takamune Takahashi
- Division of Nephrology and Hypertension, Vanderbilt University School of Medicine, Nashville, Tennessee 37232, USA
| | | | - Jill A. Kanaley
- Nutrition and Exercise Physiology, University of Missouri, Columbia, MO 65211, USA
| | - Frank W. Booth
- Nutrition and Exercise Physiology, University of Missouri, Columbia, MO 65211, USA
- Department of Biomedical Sciences, University of Missouri, Columbia, MO 65211, USA
| | - R. Scott Rector
- Research Service, Harry S Truman Memorial Veterans Medical Center, Columbia, Missouri 65212, USA
- Departments of Medicine-Division of Gastroenterology and Hepatology
- Nutrition and Exercise Physiology, University of Missouri, Columbia, MO 65211, USA
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Dirkes RK, Welly RJ, Mao J, Kinkade J, Vieira-Potter VJ, Rosenfeld CS, Bruzina PS. Gestational and lactational exposure to BPA, but not BPS, negatively impacts trabecular microarchitecture and cortical geometry in adult male offspring. Bone Rep 2021; 15:101147. [PMID: 34820485 PMCID: PMC8599108 DOI: 10.1016/j.bonr.2021.101147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 10/28/2021] [Accepted: 10/29/2021] [Indexed: 11/23/2022] Open
Abstract
Bisphenol-A (BPA) and bisphenol-S (BPS) are endocrine disrupting chemicals (EDCs) found primarily in plastics. Estrogen is a primary hormonal regulator of skeletal growth and development; however, the impact of gestational BPA or BPS exposure on skeletal health of offspring remains relatively unknown. Here, adult female mice were randomized into three treatment groups: 200 μg BPA/kg BW (BPA), 200 μg BPS/kg BW (BPS) or control (CON). Animals were then further randomized to exercising (EX) or sedentary (SED) groups. Treatment continued through mating, gestation, and lactation. One male offspring from each dam (n = 6-8/group) was assessed at 16 weeks of age to evaluate effects of EDC exposure on the adult skeleton. Cortical geometry of the mid-diaphysis and trabecular microarchitecture of the distal femur were assessed via micro-CT. Biomechanical strength and mineral apposition rate of the femoral diaphysis were assessed via three-point bending and dynamic histomorphometry, respectively. Two-factor ANOVA or ANCOVA were used to determine the effects of maternal EX and BPA or BPS on trabecular and cortical bone outcomes. Maternal EX led to a significant decrease in body fat percentage and bone stiffness, independent of EDC exposure. Offspring exposed to BPA had significantly lower trabecular bone volume, trabecular number, connectivity density, cortical thickness, and greater trabecular spacing compared to BPS or CON animals. In conclusion, gestational BPA, but not BPS, exposure negatively impacted trabecular microarchitecture and cortical geometry in adult male offspring. If these findings translate to humans, this could have significant public health impacts on expecting women or those seeking to become pregnant.
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Affiliation(s)
- Rebecca K. Dirkes
- Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, United States of America
| | - Rebecca J. Welly
- Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, United States of America
| | - Jiude Mao
- Biomedical Sciences, Christopher S. Bond Life Sciences Center, MU Institute for Data Science and Informatics, Thompson Center for Autism and Behavioral Disorders, Genetics Area Program, University of Missouri, Columbia, MO, United States of America
| | - Jessica Kinkade
- Biomedical Sciences, Christopher S. Bond Life Sciences Center, MU Institute for Data Science and Informatics, Thompson Center for Autism and Behavioral Disorders, Genetics Area Program, University of Missouri, Columbia, MO, United States of America
| | | | - Cheryl S. Rosenfeld
- Biomedical Sciences, Christopher S. Bond Life Sciences Center, MU Institute for Data Science and Informatics, Thompson Center for Autism and Behavioral Disorders, Genetics Area Program, University of Missouri, Columbia, MO, United States of America
| | - Pamela S. Bruzina
- Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, United States of America
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Dirkes RK, Welly RJ, Mao J, Kinkade J, Vieira-Potter VJ, Rosenfeld CS, Bruzina PS. Gestational and lactational exposure to BPA or BPS has minimal effects on skeletal outcomes in adult female mice. Bone Rep 2021; 15:101136. [PMID: 34632005 PMCID: PMC8489156 DOI: 10.1016/j.bonr.2021.101136] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 09/25/2021] [Accepted: 09/28/2021] [Indexed: 12/28/2022] Open
Abstract
Bisphenol-A (BPA) and bisphenol-S (BPS) are estrogen disrupting chemicals (EDCs) found in the environment and common household items. Estrogen is a primary hormonal regulator of bone growth and development; however, the impact of gestational BPA or BPS exposure on skeletal health of offspring remains relatively unknown. In this longitudinal study, adult female mice were randomized into three groups: 200 μg BPA/kg BW (BPA), 200 μg BPS/kg BW (BPS) or control (CON). Animals in each group were further randomized to exercise treatment (EX) or sedentary (SED) control, resulting in six overall groups. BPA/BPS/CON and EX/SED treatment were initiated prior to mating and continued through mating, gestation, and lactation. One female offspring from each dam (n = 6/group) was assessed at 17 weeks of age to evaluate effects of EDC exposure on the adult skeleton. Cortical geometry of the mid-diaphysis and trabecular microarchitecture of the distal femur were assessed via micro-computed tomography. Biomechanical strength and mineral apposition rate of the femoral diaphysis were assessed via three-point bending and dynamic histomorphometry, respectively. Sclerostin expression was measured using immunohistochemistry. Two-factor ANOVA or ANCOVA were used to determine the effects of maternal exercise and BPA or BPS exposure on trabecular and cortical bone outcomes, respectively. Consistent with prior studies, there were no significant differences in body weight, femoral length, cortical geometry, trabecular microarchitecture, or biomechanical strength between groups in female offspring. In conclusion, gestational BPA exposure and maternal exercise have minimal impact on skeletal outcomes in female adult offspring.
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Affiliation(s)
- Rebecca K. Dirkes
- Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, United States of America
| | - Rebecca J. Welly
- Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, United States of America
| | - Jiude Mao
- Biomedical Sciences, Christopher S. Bond Life Sciences Center, MU Institute for Data Science and Informatics, Thompson Center for Autism and Behavioral Disorders, Genetics Area Program, University of Missouri, Columbia, MO, United States of America
| | - Jessica Kinkade
- Biomedical Sciences, Christopher S. Bond Life Sciences Center, MU Institute for Data Science and Informatics, Thompson Center for Autism and Behavioral Disorders, Genetics Area Program, University of Missouri, Columbia, MO, United States of America
| | | | - Cheryl S. Rosenfeld
- Biomedical Sciences, Christopher S. Bond Life Sciences Center, MU Institute for Data Science and Informatics, Thompson Center for Autism and Behavioral Disorders, Genetics Area Program, University of Missouri, Columbia, MO, United States of America
| | - Pamela S. Bruzina
- Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, United States of America
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Clart LM, Welly RJ, Queathem ED, Rector RS, Padilla J, Baines CP, Kanaley JA, Lubahn DB, Vieira-Potter VJ. Role of ERβ in adipocyte metabolic response to wheel running following ovariectomy. J Endocrinol 2021; 249:223-237. [PMID: 33877054 PMCID: PMC8713017 DOI: 10.1530/joe-21-0009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 04/20/2021] [Indexed: 11/08/2022]
Abstract
Estrogen receptor β (ERb), one of the two major estrogen receptors, acts via genomic and non-genomic signaling pathways to affect many metabolic functions, including mitochondrial biogenesis and respiration. This study assessed the effect of ERb classical genomic activity on adipocyte-specific and -systemic metabolic responses to wheel running exercise in a rodent model of menopause. Female mice lacking the ERb DNA-binding domain (ERbDBDKO, n = 20) and WT (n = 21) littermate controls were fed a high-fat diet (HFD), ovariectomized (OVX), and randomized to control (no running wheel) and exercise (running wheel access) groups and were followed for 8 weeks. Wheel running did not confer protection against metabolic dysfunction associated with HFD+OVX in either ERbDBDKO or WT mice, despite increased energy expenditure. Unexpectedly, in the ERbDBDKO group, wheel running increased fasting insulin and surrogate measures of insulin resistance, and modestly increased adipose tissue inflammatory gene expression (P ≤ 0.05). These changes were not accompanied by significant changes in adipocyte mitochondrial respiration. It was demonstrated for the first time that female WT OVX mice do experience exercise-induced browning of white adipose tissue, indicated by a robust increase in uncoupling protein 1 (UCP1) (P ≤ 0.05). However, KO mice were completely resistant to this effect, indicating that full ERb genomic activity is required for exercise-induced browning. The inability to upregulate UCP1 with exercise following OVX may have resulted in the increased insulin resistance observed in KO mice, a hypothesis requiring further investigation.
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Affiliation(s)
- Laura M Clart
- Department of Nutrition and Exercise Physiology, University of Missouri System, Columbia, Missouri, USA
| | - Rebecca J Welly
- Department of Nutrition and Exercise Physiology, University of Missouri System, Columbia, Missouri, USA
| | - Eric D Queathem
- Department of Nutrition and Exercise Physiology, University of Missouri System, Columbia, Missouri, USA
| | - R Scott Rector
- Department of Nutrition and Exercise Physiology, University of Missouri System, Columbia, Missouri, USA
- Internal Medicine-Division of Gastroenterology and Hepatology, University of Missouri System, Columbia, Missouri, USA
- Research Service, Truman VA Memorial Hospital, Columbia, Missouri, USA
| | - Jaume Padilla
- Department of Nutrition and Exercise Physiology, University of Missouri System, Columbia, Missouri, USA
- Dalton Cardiovascular Research Center, University of Missouri System System, Columbia, Missouri, USA
| | - Christopher P Baines
- Department of Biomedical Sciences, University of Missouri System, Columbia, Missouri, USA
| | - Jill A Kanaley
- Department of Nutrition and Exercise Physiology, University of Missouri System, Columbia, Missouri, USA
| | - Dennis B Lubahn
- Department of Biochemistry, University of Missouri System, Columbia, Missouri, USA
| | - Victoria J Vieira-Potter
- Department of Nutrition and Exercise Physiology, University of Missouri System, Columbia, Missouri, USA
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Porter JW, Pettit-Mee RJ, Emerson TS, McCrae CS, Lastra G, Vieira-Potter VJ, Parks EJ, Kanaley JA. Modest sleep restriction does not influence steps, physical activity intensity or glucose tolerance in obese adults. J Sleep Res 2021; 30:e13381. [PMID: 33949729 DOI: 10.1111/jsr.13381] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 03/13/2021] [Accepted: 04/16/2021] [Indexed: 11/30/2022]
Abstract
Sleep restriction (SR) (<6 h) and physical activity (PA) are risk factors for obesity, but little work has examined the inter-related influences of both risk factors. In a free-living environment, 13 overweight/obese adults were sleep restricted for five nights to 6 h time-in-bed each night, with and without regular exercise (45 min/65% VO2 max; counterbalanced design). Two days of recovery sleep followed SR. Subjects were measured during a mixed meal tolerance test (MMT), resting metabolic rate, cognitive testing and fat biopsy (n=8). SR increased peak glucose response (+7.3 mg/dl, p = .04), elevated fasting non-esterified fatty acid (NEFA) concentrations (+0.1 mmol/L, p = .001) and enhanced fat oxidation (p < .001) without modifying step counts or PA intensity. Inclusion of daily exercise increased step count (+4,700 steps/day, p < .001) and decreased the insulin response to a meal (p = .01) but did not prevent the increased peak glucose response or elevated NEFA levels. The weekend recovery period improved fasting glucose (p = .02), insulin (p = .02), NEFA concentrations (p = .001) and HOMA-IR (p < .01) despite reduced steps (p < .01) and increased sedentary time (p < .01). Abdominal adipose tissue (AT) samples, obtained after baseline, SR and exercise, did not differ in lipolytic capacity following SR. Fatty acid synthase protein content tended to increase following SR (p = .07), but not following exercise. In a free-living setting, SR adversely affected circulating NEFAs, fuel oxidation and peak glucose response but did not directly affect glucose tolerance or AT lipolysis. SR-associated metabolic impairments were not mitigated by exercise, yet recovery sleep completely rescued its adverse effects on glucose metabolism.
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Affiliation(s)
- Jay W Porter
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, USA
| | - Ryan J Pettit-Mee
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, USA
| | - Travis S Emerson
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, USA
| | - Christina S McCrae
- Department of Health Psychology, University of Missouri, Columbia, MO, USA
| | - Guido Lastra
- Department of Medicine, Division of Endocrinology, Diabetes and Metabolism, University of Missouri School of Medicine, Columbia, MO, USA
| | | | - Elizabeth J Parks
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, USA
| | - Jill A Kanaley
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, USA
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Porter JW, Barnas JL, Welly R, Spencer N, Pitt J, Vieira-Potter VJ, Kanaley JA. Age, Sex, and Depot-Specific Differences in Adipose-Tissue Estrogen Receptors in Individuals with Obesity. Obesity (Silver Spring) 2020; 28:1698-1707. [PMID: 32734695 PMCID: PMC7483923 DOI: 10.1002/oby.22888] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 05/04/2020] [Accepted: 05/05/2020] [Indexed: 12/16/2022]
Abstract
OBJECTIVE The aim of this study was to examine the effects of sex and menopausal status on depot-specific estrogen signaling in white adipose tissue (AT) in age-matched men and women with morbid obesity. METHODS A total of 28 premenopausal women, 16 postmenopausal women, and 27 age-matched men undergoing bariatric surgery were compared for omental (OM) AT (OMAT) and abdominal subcutaneous (SQ) AT (SQAT) genes and proteins. RESULTS With the exception of fasting nonesterified fatty acids being higher in women (P < 0.01), no differences were found in other indicators of glucose and lipid metabolism. In OMAT, estrogen receptor (ER) beta (ERβ) levels were higher in older women than in younger women and older men (sex-age interaction, P < 0.01), and aromatase expression was higher in older men than in older women (P < 0.05). In SQAT, women had lower expression of ERβ than men (P < 0.05). Protein content of ER alpha and ERβ was highly correlated with the mitochondrial protein uncoupling protein 1 across sexes and ages (P < 0.001). Age increased SQ inflammatory gene expression in both sexes. CONCLUSIONS In morbid obesity, sex and age affect AT ERs, lipid metabolism, mitochondrial uncoupling protein 1, and inflammatory expression in an AT depot-dependent manner. The SQAT immunometabolic profile is heavily influenced by age and menopause status, more so than OMAT.
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Affiliation(s)
- Jay W Porter
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri, USA
| | - Jillian L Barnas
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri, USA
| | - Rebecca Welly
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri, USA
| | - Nicole Spencer
- General Surgery, Columbia Surgical Associates, Columbia, Missouri, USA
| | - James Pitt
- General Surgery, Columbia Surgical Associates, Columbia, Missouri, USA
| | - Victoria J Vieira-Potter
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri, USA
| | - Jill A Kanaley
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri, USA
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Dirkes RK, Weiss ED, Welly RJ, Mao J, Kinkade J, Vieira-Potter VJ, Rosenfeld CS, Bruzina PS. IMPACT OF MATERNAL EXERCISE ON CORTICAL GEOMETRY AND TRABECULAR MICROARCHITECTURE IN MOUSE OFFSPRING. Med Sci Sports Exerc 2020. [DOI: 10.1249/01.mss.0000679456.13795.be] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Shay DA, Welly RJ, Givan SA, Bivens N, Kanaley J, Marshall BL, Lubahn DB, Rosenfeld CS, Vieira-Potter VJ. Changes in nucleus accumbens gene expression accompany sex-specific suppression of spontaneous physical activity in aromatase knockout mice. Horm Behav 2020; 121:104719. [PMID: 32081742 PMCID: PMC7387966 DOI: 10.1016/j.yhbeh.2020.104719] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 02/08/2020] [Accepted: 02/12/2020] [Indexed: 12/29/2022]
Abstract
Aromatase catalyzes conversion of testosterone to estradiol and is expressed in a variety of tissues, including the brain. Suppression of aromatase adversely affects metabolism and physical activity behavior, but mechanisms remain uncertain. The hypothesis tested herein was that whole body aromatase deletion would cause gene expression changes in the nucleus accumbens (NAc), a brain regulating motivated behaviors such as physical activity, which is suppressed with loss of estradiol. Metabolic and behavioral assessments were performed in male and female wild-type (WT) and aromatase knockout (ArKO) mice. NAc-specific differentially expressed genes (DEGs) were identified with RNAseq, and associations between the measured phenotypic traits were determined. Female ArKO mice had greater percent body fat, reduced spontaneous physical activity (SPA), consumed less energy, and had lower relative resting energy expenditure (REE) than WT females. Such differences were not observed in ArKO males. However, in both sexes, a top DEG was Pts, a gene encoding an enzyme necessary for catecholamine (e.g., dopamine) biosynthesis. In comparing male and female WT mice, top DEGs were related to sexual development/fertility, immune regulation, obesity, dopamine signaling, and circadian regulation. SPA correlated strongly with Per3, a gene regulating circadian function, thermoregulation, and metabolism (r = -0.64, P = .002), which also correlated with adiposity (r = 0.54, P = .01). In conclusion, aromatase ablation leads to gene expression changes in NAc, which may in turn result in reduced SPA and related metabolic abnormalities. These findings may have significance to post-menopausal women and those treated with an aromatase inhibitor.
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Affiliation(s)
- Dusti A Shay
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia 65211, MO, USA
| | - Rebecca J Welly
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia 65211, MO, USA
| | - Scott A Givan
- Informatics Research Core Facility, University of Missouri, Columbia 65211, MO, USA
| | - Nathan Bivens
- DNA Core Facility, University of Missouri, Columbia 65211, MO, USA
| | - Jill Kanaley
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia 65211, MO, USA
| | - Brittney L Marshall
- Bond Life Sciences Center, University of Missouri, Columbia 65211, MO, USA; Biomedical Sciences, University of Missouri, Columbia 65211, MO, USA
| | - Dennis B Lubahn
- Department of Biochemistry, University of Missouri, Columbia, MO 65211, USA; Department of Child Health, University of Missouri, Columbia, MO 65211, USA
| | - Cheryl S Rosenfeld
- Bond Life Sciences Center, University of Missouri, Columbia 65211, MO, USA; Biomedical Sciences, University of Missouri, Columbia 65211, MO, USA; Thompson Center for Autism and Neurobehavioral Disorders, University of Missouri, Columbia 65211, MO, USA; MU Informatics Institute, University of Missouri, Columbia 65211, MO, USA
| | - Victoria J Vieira-Potter
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia 65211, MO, USA.
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12
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Zidon TM, Padilla J, Fritsche KL, Welly RJ, McCabe LT, Stricklin OE, Frank A, Park Y, Clegg DJ, Lubahn DB, Kanaley JA, Vieira-Potter VJ. Effects of ERβ and ERα on OVX-induced changes in adiposity and insulin resistance. J Endocrinol 2020; 245:165-178. [PMID: 32053493 PMCID: PMC7391131 DOI: 10.1530/joe-19-0321] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Accepted: 02/13/2020] [Indexed: 12/12/2022]
Abstract
Loss of ovarian hormones leads to increased adiposity and insulin resistance (IR), increasing the risk for cardiovascular and metabolic diseases. The purpose of this study was to investigate whether the molecular mechanism behind the adverse systemic and adipose tissue-specific metabolic effects of ovariectomy requires loss of signaling through estrogen receptor alpha (ERα) or estrogen receptor β (ERβ). We examined ovariectomized (OVX) and ovary-intactwild-type (WT), ERα-null (αKO), and ERβ-null (βKO) female mice (age ~49 weeks; n = 7-12/group). All mice were fed a phytoestrogen-free diet (<15 mg/kg) and either remained ovary-intact (INT) or were OVX and followed for 12 weeks. Body composition, energy expenditure, glucose tolerance, and adipose tissue gene and protein expression were analyzed. INT αKO were ~25% fatter with reduced energy expenditure compared to age-matched INT WT controls and βKO mice (all P < 0.001). Following OVX, αKO mice did not increase adiposity or experience a further increase in IR, unlike WT and βKO, suggesting that loss of signaling through ERα mediates OVX-induced metabolic dysfunction. In fact, OVX in αKO mice (i.e., signaling through ERβ in the absence of ERα) resulted in reduced adiposity, adipocyte size, and IR (P < 0.05 for all). βKO mice responded adversely to OVX in terms of increased adiposity and development of IR. Together, these findings challenge the paradigm that ERα mediates metabolic protection over ERβ in all settings. These findings lead us to suggest that, following ovarian hormone loss, ERβ may mediate protective metabolic benefits.
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Affiliation(s)
- Terese M. Zidon
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia MO 65211
| | - Jaume Padilla
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia MO 65211
- Dalton Cardiovascular Research Center, University of Missouri, Columbia MO
| | - Kevin L. Fritsche
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia MO 65211
| | - Rebecca J. Welly
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia MO 65211
| | - Leighton T. McCabe
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia MO 65211
| | - Olivia E. Stricklin
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia MO 65211
| | - Aaron Frank
- Department of Biomedical Sciences, Diabetes and Obesity Research Institute, Cedars-Sinai Medical Center, Los Angeles, California 90048
| | - Youngmin Park
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia MO 65211
- Department of Exercise and Health Science, Incheon National University, South Korea
| | - Deborah J. Clegg
- College of Nursing and Health Professions, Drexel University, Philadelphia, PA
| | | | - Jill A. Kanaley
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia MO 65211
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13
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Dirkes RK, Winn NC, Jurrissen TJ, Lubahn DB, Vieira-Potter VJ, Padilla J, Hinton PS. Global estrogen receptor-α knockout has differential effects on cortical and cancellous bone in aged male mice. Facets (Ott) 2020. [DOI: 10.1139/facets-2019-0043] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Estrogen receptor-α knockout (ERKO) in female rodents results in bone loss associated with increased osteocyte sclerostin expression; whether this also occurs in males is unknown. Here, we examined the effects of ERKO on femoral cortical geometry, trabecular microarchitecture, and osteocyte sclerostin expression of the femur and lumbar vertebrae. At 14 months of age, male ERKO and wild-type (WT) littermates ( n = 6 per group) were sacrificed, and femora and vertebra were collected. Cortical geometry and trabecular microarchitecture were assessed via micro-computed tomography; osteocyte sclerostin expression was assessed via immunohistochemistry. ANCOVA with body weight was used to compare ERKO and WT for cortical geometry; t-tests were used for all other outcomes. Regardless of skeletal site, ERKO mice had greater trabecular bone volume and trabecular number and decreased trabecular separation compared with WT. In the femoral diaphysis, ERKO had lower total area, cortical area, and cortical thickness compared with WT. The percentage of sclerostin+ osteocytes was increased in ERKO animals in cortical bone but not in cancellous bone of the femur or the lumbar vertebrae. In conclusion, ERKO improved trabecular microarchitecture in aged male mice, but negatively altered femoral cortical geometry associated with a trend towards increased cortical sclerostin expression.
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Affiliation(s)
- Rebecca K. Dirkes
- Nutrition and Exercise Physiology, University of Missouri, 204 Gwynn Hall, Columbia, MO 65211, USA
| | - Nathan C. Winn
- Nutrition and Exercise Physiology, University of Missouri, 204 Gwynn Hall, Columbia, MO 65211, USA
| | - Thomas J. Jurrissen
- Nutrition and Exercise Physiology, University of Missouri, 204 Gwynn Hall, Columbia, MO 65211, USA
| | - Dennis B. Lubahn
- Department of Biochemistry, University of Missouri, 117 Schweitzer Hall, Columbia, MO 65211, USA
- Child Health, University of Missouri, 400 N. Keene Street, Suite 010, Columbia, MO 65211, USA
| | | | - Jaume Padilla
- Nutrition and Exercise Physiology, University of Missouri, 204 Gwynn Hall, Columbia, MO 65211, USA
- Child Health, University of Missouri, 400 N. Keene Street, Suite 010, Columbia, MO 65211, USA
- Dalton Cardiovascular Research Center, University of Missouri, 134 Research Park Dr., Columbia, MO 65211, USA
| | - Pamela S. Hinton
- Nutrition and Exercise Physiology, University of Missouri, 204 Gwynn Hall, Columbia, MO 65211, USA
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14
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Winn NC, Acin-Perez R, Woodford ML, Hansen SA, Haney MM, Ayedun LA, Rector RS, Vieira-Potter VJ, Shirihai OS, Sacks HS, Kanaley JA, Padilla J. A Thermogenic-Like Brown Adipose Tissue Phenotype Is Dispensable for Enhanced Glucose Tolerance in Female Mice. Diabetes 2019; 68:1717-1729. [PMID: 30862679 PMCID: PMC6702635 DOI: 10.2337/db18-1070] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Accepted: 03/04/2019] [Indexed: 12/12/2022]
Abstract
The prevailing dogma is that thermogenic brown adipose tissue (BAT) contributes to improvements in glucose homeostasis in obesogenic animal models, though much of the evidence supporting this premise is from thermostressed rodents. Determination of whether modulation of the BAT morphology/function drives changes in glucoregulation at thermoneutrality requires further investigation. We used loss- and gain-of-function approaches including genetic manipulation of the lipolytic enzyme Pnpla2, change in environmental temperature, and lifestyle interventions to comprehensively test the premise that a thermogenic-like BAT phenotype is coupled with enhanced glucose tolerance in female mice. In contrast to this hypothesis, we found that 1) compared to mice living at thermoneutrality, enhanced activation of BAT and its thermogenic phenotype via chronic mild cold stress does not improve glucose tolerance in obese mice, 2) silencing of the Pnpla2 in interscapular BAT causes a brown-to-white phenotypic shift accompanied with inflammation but does not disrupt glucose tolerance in lean mice, and 3) exercise and low-fat diet improve glucose tolerance in obese mice but these effects do not track with a thermogenic BAT phenotype. Collectively, these findings indicate that a thermogenic-like BAT phenotype is not linked to heightened glucose tolerance in female mice.
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Affiliation(s)
- Nathan C Winn
- Nutrition and Exercise Physiology, University of Missouri, Columbia, MO
- Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN
| | - Rebeca Acin-Perez
- Division of Endocrinology, Department of Medicine, and Department of Molecular and Medical Pharmacology, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | | | - Sarah A Hansen
- Office of Animal Resources, University of Missouri, Columbia, MO
| | - Megan M Haney
- Office of Animal Resources, University of Missouri, Columbia, MO
| | - Lolade A Ayedun
- Nutrition and Exercise Physiology, University of Missouri, Columbia, MO
| | - R Scott Rector
- Nutrition and Exercise Physiology, University of Missouri, Columbia, MO
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Missouri, Columbia, MO
- Research Service, Harry S. Truman Memorial Veterans' Hospital, Columbia, MO
| | | | - Orian S Shirihai
- Division of Endocrinology, Department of Medicine, and Department of Molecular and Medical Pharmacology, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - Harold S Sacks
- Division of Endocrinology, Department of Medicine, and Department of Molecular and Medical Pharmacology, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - Jill A Kanaley
- Nutrition and Exercise Physiology, University of Missouri, Columbia, MO
| | - Jaume Padilla
- Nutrition and Exercise Physiology, University of Missouri, Columbia, MO
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO
- Child Health, University of Missouri, Columbia, MO
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15
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Jurrissen TJ, Grunewald ZI, Woodford ML, Winn NC, Ball JR, Smith TN, Wheeler AA, Rawlings AL, Staveley-O'Carroll KF, Ji Y, Fay WP, Paradis P, Schiffrin EL, Vieira-Potter VJ, Fadel PJ, Martinez-Lemus LA, Padilla J. Overproduction of endothelin-1 impairs glucose tolerance but does not promote visceral adipose tissue inflammation or limit metabolic adaptations to exercise. Am J Physiol Endocrinol Metab 2019; 317:E548-E558. [PMID: 31310581 PMCID: PMC6766607 DOI: 10.1152/ajpendo.00178.2019] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Endothelin-1 (ET-1) is a potent vasoconstrictor and proinflammatory peptide that is upregulated in obesity. Herein, we tested the hypothesis that ET-1 signaling promotes visceral adipose tissue (AT) inflammation and disrupts glucose homeostasis. We also tested if reduced ET-1 is a required mechanism by which exercise ameliorates AT inflammation and improves glycemic control in obesity. We found that 1) diet-induced obesity, AT inflammation, and glycemic dysregulation were not accompanied by significantly increased levels of ET-1 in AT or circulation in wild-type mice and that endothelial overexpression of ET-1 and consequently increased ET-1 levels did not cause AT inflammation yet impaired glucose tolerance; 2) reduced AT inflammation and improved glucose tolerance with voluntary wheel running was not associated with decreased levels of ET-1 in AT or circulation in obese mice nor did endothelial overexpression of ET-1 impede such exercise-induced metabolic adaptations; 3) chronic pharmacological blockade of ET-1 receptors did not suppress AT inflammation in obese mice but improved glucose tolerance; and 4) in a cohort of human subjects with a wide range of body mass indexes, ET-1 levels in AT, or circulation were not correlated with markers of inflammation in AT. In aggregate, we conclude that ET-1 signaling is not implicated in the development of visceral AT inflammation but promotes glucose intolerance, thus representing an important therapeutic target for glycemic dysregulation in conditions characterized by hyperendothelinemia. Furthermore, we show that the salutary effects of exercise on AT and systemic metabolic function are not contingent on the suppression of ET-1 signaling.
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Affiliation(s)
- Thomas J Jurrissen
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, Missouri
| | - Zachary I Grunewald
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, Missouri
| | - Makenzie L Woodford
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, Missouri
| | - Nathan C Winn
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee
| | - James R Ball
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri
| | - Thomas N Smith
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri
| | - Andrew A Wheeler
- Department of Surgery, University of Missouri, Columbia, Missouri
| | | | | | - Yan Ji
- Department of Medical Pharmacology and Physiology, University of Missouri School of Medicine, University of Missouri, Columbia, Missouri
| | - William P Fay
- Department of Medical Pharmacology and Physiology, University of Missouri School of Medicine, University of Missouri, Columbia, Missouri
- Department of Medicine, University of Missouri, Columbia, Missouri
- Research Service, Harry S. Truman Memorial Veterans Hospital, University of Missouri, Columbia, Missouri
| | - Pierre Paradis
- Lady Davis Institute for Medical Research, Sir Mortimer B. Davis-Jewish General Hospital, McGill University, Montreal, QC, Canada
| | - Ernesto L Schiffrin
- Lady Davis Institute for Medical Research, Sir Mortimer B. Davis-Jewish General Hospital, McGill University, Montreal, QC, Canada
- Department of Medicine, Sir Mortimer B. Davis-Jewish General Hospital, McGill University, Montreal, QC, Canada
| | | | - Paul J Fadel
- Department of Kinesiology, University of Texas at Arlington, Arlington, Texas
| | - Luis A Martinez-Lemus
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, Missouri
- Department of Medical Pharmacology and Physiology, University of Missouri School of Medicine, University of Missouri, Columbia, Missouri
| | - Jaume Padilla
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, Missouri
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16
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Lee JR, Tapia MA, Weise VN, Bathe EL, Vieira-Potter VJ, Booth FW, Will MJ. Voluntary wheel running effects on intra-accumbens opioid driven diet preferences in male and female rats. Neuropharmacology 2019; 155:22-30. [PMID: 31100290 DOI: 10.1016/j.neuropharm.2019.05.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 05/08/2019] [Accepted: 05/13/2019] [Indexed: 10/26/2022]
Abstract
Palatability driven feeding and voluntary physical activity are mediated by and influence similar neural mechanisms, notably through the actions of opioids within the nucleus accumbens. Recent studies suggest that access to a voluntary running wheel results in sex dependent behavioral and physiological adaptations related to opioid mediated palatability-driven feeding. To explore this relationship, male and female Wistar rats were given either access to a voluntary running wheel (RUN group) or no access (SED group) for one week prior to being stereotaxically implanted with bilateral cannulae targeting the nucleus accumbens. Following 7 days of recovery, with RUN or SED conditions continuing the duration of the experiment, all rats were assessed daily (2 h/day) for feeding behavior of concurrently accessible high-carbohydrate and high-fat diet for one week. Following this week, all rats were administered the μ-opioid receptor agonist D-Ala2, NMe-Phe4, Glyol5-enkephalin (DAMGO) (0.0025 μg, 0.025 μg, or 0.25 μg/0.5 μl/side) or the opioid antagonist naloxone (20 μg/0.5 μl/side) into the nucleus accumbens and given concurrent access (2 h) to both diets. All groups expressed a significant baseline preference for the high-carbohydrate diet. DAMGO administration, compared to saline treatment, led to significant increased consumption of the high-carbohydrate diet in all treatment groups. While high-fat diet consumption also increased following DAMGO administration, the influence of DAMGO was much more robust for the preferred high-carbohydrate diet in all groups. Compared to males, females consumed significantly more of both diets at baseline and following DAMGO treatment. Both male and female rats in the RUN condition consumed more high-carbohydrate diet compared to rats in the SED condition. While males exhibited similar increased consumption of both diets regardless of RUN or SED condition, females in the RUN condition displayed a greater sensitivity to DAMGO-driven consumption of the preferred high-carbohydrate, compared to SED females.
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Affiliation(s)
- Jenna R Lee
- Interdisciplinary Neuroscience Program, University of Missouri, Columbia, MO, USA
| | - Melissa A Tapia
- Department of Psychological Sciences, University of Missouri, Columbia, MO, USA
| | - Valerie N Weise
- Department of Psychological Sciences, University of Missouri, Columbia, MO, USA
| | - Emily L Bathe
- Department of Psychological Sciences, University of Missouri, Columbia, MO, USA
| | | | - Frank W Booth
- Department of Biomedical Sciences, University of Missouri, Columbia, MO, USA
| | - Matthew J Will
- Interdisciplinary Neuroscience Program, University of Missouri, Columbia, MO, USA; Department of Psychological Sciences, University of Missouri, Columbia, MO, USA.
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17
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Clookey SL, Welly RJ, Shay D, Woodford ML, Fritsche KL, Rector RS, Padilla J, Lubahn DB, Vieira-Potter VJ. Beta 3 Adrenergic Receptor Activation Rescues Metabolic Dysfunction in Female Estrogen Receptor Alpha-Null Mice. Front Physiol 2019; 10:9. [PMID: 30804793 PMCID: PMC6371032 DOI: 10.3389/fphys.2019.00009] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Accepted: 01/08/2019] [Indexed: 12/21/2022] Open
Abstract
Metabolic disease risk escalates following menopause. The mechanism is not fully known, but likely involves reduced signaling through estrogen receptor alpha (ERα), which is highly expressed in brown and white adipose tissue (BAT and WAT). Objective: Test the hypothesis that uncoupling protein (UCP1) activation mitigates metabolic dysfunction caused by loss of signaling through ERα. Methods: At 8 weeks of age, female ERα knock out (KO) and wild-type mice were housed at 28°C and fed a Western-style high-fat, high sucrose diet (HFD) or a normal low-fat chow diet (NC) for 10 weeks. During the final 2 weeks, they received daily injections of CL 316,256 (CL), a selective β3 adrenergic agonist, or vehicle control (CTRL), creating eight groups: WT-CTRL, WT-CL, KO-CTRL, and KO-CL on HFD or NC; n = 4–10/group. Results: ERαKO demonstrated exacerbated HFD-induced adiposity gain (P < 0.001) and insulin resistance (P = 0.006). CL treatment improved insulin sensitivity (P < 0.05) and normalized ERαKO-induced adiposity increase (P < 0.05). In both genotypes, CL increased resting energy expenditure (P < 0.05) and induced WAT beiging indicated by increased UCP1 protein in both perigonadal (PGAT) and subcutaneous (SQAT) depots. These effects were attenuated under HFD conditions (P < 0.05). In KO, CL reduced HFD energy consumption compared to CTRL (P < 0.05). Remarkably, CL increased WAT ERβ protein levels of both WT and KO (P < 0.001), revealing CL-mediated changes in estrogen signaling may have protective metabolic effects. Conclusion: CL completely restored metabolic dysfunction in ERαKO mice. Thus, UCP1 may be a therapeutic target for treating metabolic dysfunction following loss of estrogen receptor signaling.
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Affiliation(s)
- Stephanie L Clookey
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, United States
| | - Rebecca J Welly
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, United States
| | - Dusti Shay
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, United States
| | - Makenzie L Woodford
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, United States
| | - Kevin L Fritsche
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, United States
| | - R Scott Rector
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, United States.,Harry S. Truman Memorial Veterans' Hospital, Columbia, MO, United States.,Department of Medicine, University of Missouri, Columbia, MO, United States
| | - Jaume Padilla
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, United States.,Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO, United States.,Child Health, University of Missouri, Columbia, MO, United States
| | - Dennis B Lubahn
- Department of Biochemistry, University of Missouri, Columbia, MO, United States
| | - Victoria J Vieira-Potter
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, United States
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18
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Lee JR, Tapia MA, Nelson JR, Moore JM, Gereau GB, Childs TE, Vieira-Potter VJ, Booth FW, Will MJ. Sex dependent effects of physical activity on diet preference in rats selectively bred for high or low levels of voluntary wheel running. Behav Brain Res 2019; 359:95-103. [DOI: 10.1016/j.bbr.2018.10.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 09/15/2018] [Accepted: 10/12/2018] [Indexed: 12/20/2022]
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19
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Winn NC, Jurrissen TJ, Grunewald ZI, Cunningham RP, Woodford ML, Kanaley JA, Lubahn DB, Manrique-Acevedo C, Rector RS, Vieira-Potter VJ, Padilla J. Estrogen receptor-α signaling maintains immunometabolic function in males and is obligatory for exercise-induced amelioration of nonalcoholic fatty liver. Am J Physiol Endocrinol Metab 2019; 316:E156-E167. [PMID: 30512987 PMCID: PMC6397364 DOI: 10.1152/ajpendo.00259.2018] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The role of estrogen receptor-α (ERα) signaling in immunometabolic function is established in females. However, its necessity in males, while appreciated, requires further study. Accordingly, we first determined whether lower metabolic function in male mice compared with females is related to reduced ERα expression. ERα protein expression in metabolically active tissues was lower in males than in females, and this lower expression was associated with worse glucose tolerance. Second, we determined whether ERα is required for optimal immunometabolic function in male mice consuming a chow diet. Despite lower expression of ERα in males, its genetic ablation (KO) caused an insulin-resistant phenotype characterized by enhanced adiposity, glucose intolerance, hepatic steatosis, and metaflammation in adipose tissue and liver. Last, we determined whether ERα is essential for exercise-induced metabolic adaptations. Twelve-week-old wild-type (WT) and ERα KO mice either remained sedentary (SED) or were given access to running wheels (WR) for 10 wk while fed an obesogenic diet. Body weight and fat mass were lower in WR mice regardless of genotype. Daily exercise obliterated immune cell infiltration and inflammatory gene transcripts in adipose tissue in both genotypes. In the liver, however, wheel running suppressed hepatic steatosis and inflammatory gene transcripts in WT but not in KO mice. In conclusion, the present findings indicate that ERα is required for optimal immunometabolic function in male mice despite their reduced ERα protein expression in metabolically active tissues. Furthermore, for the first time, we show that ERα signaling appears to be obligatory for exercise-induced prevention of hepatic steatosis.
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Affiliation(s)
- Nathan C Winn
- Department of Nutrition and Exercise Physiology, University of Missouri , Columbia, Missouri
| | - Thomas J Jurrissen
- Department of Nutrition and Exercise Physiology, University of Missouri , Columbia, Missouri
| | - Zachary I Grunewald
- Department of Nutrition and Exercise Physiology, University of Missouri , Columbia, Missouri
| | - Rory P Cunningham
- Department of Nutrition and Exercise Physiology, University of Missouri , Columbia, Missouri
| | - Makenzie L Woodford
- Department of Nutrition and Exercise Physiology, University of Missouri , Columbia, Missouri
| | - Jill A Kanaley
- Department of Nutrition and Exercise Physiology, University of Missouri , Columbia, Missouri
| | - Dennis B Lubahn
- Department of Biochemistry, University of Missouri , Columbia, Missouri
| | - Camila Manrique-Acevedo
- Department of Medicine, Division of Endocrinology, University of Missouri , Columbia, Missouri
| | - R Scott Rector
- Department of Nutrition and Exercise Physiology, University of Missouri , Columbia, Missouri
- Department of Medicine, Division of Gastroenterology and Hepatology, University of Missouri , Columbia, Missouri
- Research Service, Harry S. Truman Memorial Hospital, University of Missouri , Columbia, Missouri
| | | | - Jaume Padilla
- Department of Nutrition and Exercise Physiology, University of Missouri , Columbia, Missouri
- Department of Child Health, University of Missouri , Columbia, Missouri
- Dalton Cardiovascular Research Center, University of Missouri , Columbia, Missouri
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20
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Vieira-Potter VJ, Cross TWL, Swanson KS, Sarma SJ, Lei Z, Sumner LW, Rosenfeld CS. Soy-Induced Fecal Metabolome Changes in Ovariectomized and Intact Female Rats: Relationship with Cardiometabolic Health. Sci Rep 2018; 8:16896. [PMID: 30442926 PMCID: PMC6237990 DOI: 10.1038/s41598-018-35171-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 10/31/2018] [Indexed: 12/13/2022] Open
Abstract
Phytoestrogens are plant-derived compounds found in a variety of foods, most notably, soy. These compounds have been shown to improve immuno-metabolic health, yet mechanisms remain uncertain. We demonstrated previously that dietary phytoestrogen-rich soy (SOY) rescued metabolic dysfunction/inflammation following ovariectomy (OVX) in female rats; we also noted remarkable shifts in gut microbiota in SOY vs control diet-fed rats. Importantly, specific bacteria that significantly increased in those fed the SOY correlated positively with several favorable host metabolic parameters. One mechanism by which gut microbes might lead to such host effects is through production of bacterial metabolites. To test this possibility, we utilized non-targeted gas chromatography-mass spectrometry (GCMS) to assess the fecal metabolome in those previously studied animals. Partial least square discriminant analysis (PLSDA) revealed clear separation of fecal metabolomes based on diet and ovarian state. In particular, SOY-fed animals had greater fecal concentrations of the beneficial bacterial metabolite, S-equol, which was positively associated with several of the bacteria upregulated in the SOY group. S-equol was inversely correlated with important indicators of metabolic dysfunction and inflammation, suggesting that this metabolite might be a key mediator between SOY and gut microbiome-positive host health outcomes.
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Affiliation(s)
- Victoria J Vieira-Potter
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, 65211, USA
| | - Tzu-Wen L Cross
- Department of Bacteriology, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Kelly S Swanson
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Saurav J Sarma
- MU Metabolomics Center, University of Missouri, Columbia, MO, 65211, USA
- Biochemistry, University of Missouri, Columbia, MO, 65211, USA
| | - Zhentian Lei
- MU Metabolomics Center, University of Missouri, Columbia, MO, 65211, USA
- Biochemistry, University of Missouri, Columbia, MO, 65211, USA
- Bond Life Sciences Center, University of Missouri, Columbia, MO, 65211, USA
| | - Lloyd W Sumner
- MU Metabolomics Center, University of Missouri, Columbia, MO, 65211, USA
- Biochemistry, University of Missouri, Columbia, MO, 65211, USA
- Bond Life Sciences Center, University of Missouri, Columbia, MO, 65211, USA
| | - Cheryl S Rosenfeld
- Bond Life Sciences Center, University of Missouri, Columbia, MO, 65211, USA.
- Biomedical Sciences, University of Missouri, Columbia, MO, 65211, USA.
- Thompson Center for Autism and Neurobehavioral Disorders, University of Missouri, Columbia, MO, 65211, USA.
- Genetics Area Program, University of Missouri, Columbia, MO, 65211, USA.
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Clookey SL, Welly RJ, Zidon TM, Gastecki ML, Woodford ML, Grunewald ZI, Winn NC, Eaton D, Karasseva NG, Sacks HS, Padilla J, Vieira-Potter VJ. Increased susceptibility to OVX-associated metabolic dysfunction in UCP1-null mice. J Endocrinol 2018; 239:107-120. [PMID: 30089681 PMCID: PMC7340174 DOI: 10.1530/joe-18-0139] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 07/30/2018] [Accepted: 08/06/2018] [Indexed: 01/23/2023]
Abstract
Premenopausal females are protected against adipose tissue inflammation and insulin resistance, until loss of ovarian hormone production (e.g., menopause). There is some evidence that females have greater brown adipose tissue (BAT) thermogenic capacity. Because BAT mass correlates inversely with insulin resistance, we hypothesized that increased uncoupling protein 1 (UCP1) expression contributes to the superior metabolic health of females. Given that UCP1 transiently increases in BAT following ovariectomy (OVX), we hypothesized that UCP1 may 'buffer' OVX-mediated metabolic dysfunction. Accordingly, female UCP1-knockout (KO) and WT mice received OVX or sham (SHM) surgeries at 12 weeks of age creating four groups (n = 10/group), which were followed for 14 weeks and compared for body weight and adiposity, food intake, energy expenditure and spontaneous physical activity (metabolic chambers), insulin resistance (HOMA-IR, ADIPO-IR and glucose tolerance testing) and adipose tissue phenotype (histology, gene and protein expression). Two-way ANOVA was used to assess the main effects of genotype (G), OVX treatment (O) and genotype by treatment (GxO) interactions, which were considered significant when P ≤ 0.05. UCP1KO mice experienced a more adverse metabolic response to OVX than WT. Whereas OVX-induced weight gain was not synergistically greater for KO compared to WT (GxO, NS), OVX-induced insulin resistance was significantly exacerbated in KO compared to WT (GxO for HOMA-IR, P < 0.05). These results suggest UCP1 is protective against metabolic dysfunction associated with loss of ovarian hormones and support the need for more research into therapeutics to selectively target UCP1 for prevention and treatment of metabolic dysfunction following ovarian hormone loss.
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Affiliation(s)
- Stephanie L. Clookey
- Department of Nutrition and Exercise Physiology, University
of Missouri, Columbia
| | - Rebecca J. Welly
- Department of Nutrition and Exercise Physiology, University
of Missouri, Columbia
| | - Terese M. Zidon
- Department of Nutrition and Exercise Physiology, University
of Missouri, Columbia
| | - Michelle L. Gastecki
- Department of Nutrition and Exercise Physiology, University
of Missouri, Columbia
| | - Makenzie L. Woodford
- Department of Nutrition and Exercise Physiology, University
of Missouri, Columbia
| | - Zachary I. Grunewald
- Department of Nutrition and Exercise Physiology, University
of Missouri, Columbia
| | - Nathan C. Winn
- Department of Nutrition and Exercise Physiology, University
of Missouri, Columbia
| | | | | | - Harold S. Sacks
- Endocrine and Diabetes Division, Veterans Greater Los
Angeles Healthcare System, Los Angeles, CA
| | - Jaume Padilla
- Department of Nutrition and Exercise Physiology, University
of Missouri, Columbia
- Dalton Cardiovascular Research Center, University of
Missouri, Columbia, MO
- Department of Child Health, University of Missouri,
Columbia, MO
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22
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Shay DA, Vieira-Potter VJ, Rosenfeld CS. Sexually Dimorphic Effects of Aromatase on Neurobehavioral Responses. Front Mol Neurosci 2018; 11:374. [PMID: 30374289 PMCID: PMC6196265 DOI: 10.3389/fnmol.2018.00374] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2018] [Accepted: 09/21/2018] [Indexed: 01/16/2023] Open
Abstract
Aromatase is the enzyme responsible for converting testosterone to estradiol. In mammals, aromatase is expressed in the testes, ovaries, brain, and other tissues. While estrogen is traditionally associated with reproduction and sexual behavior in females, our current understanding broadens this perspective to include such biological functions as metabolism and cognition. It is now well-recognized that aromatase plays a vital lifetime role in brain development and neurobehavioral function in both sexes. Thus, ongoing investigations seek to highlight potentially vital sex differences in the role of aromatase, particularly regarding its centrally mediated effects. To characterize the role of aromatase in mediating such functions, effects of aromatase inhibitor (AI) treatments on humans and animal models have been determined. Aromatase knockout (ArKO) mice that systemically lack the enzyme have also been employed. Humans possessing mutations in the gene encoding aromatase, CYP19, have also provided critical insight into how aromatase affects brain function in a possible sex-dependent manner. A better understanding of how AIs, used to treat breast cancer and other clinical conditions, may detrimentally affect neurobehavioral responses will likely promote development of future therapies to combat these effects. Herein, we will provide a critical review of the current knowledge of sex differences in aromatase regulation of various neurobehavioral functions. Although many species have been used to better understand the functions of aromatase, this review focuses on rodent models and humans. Critical gaps in our present understanding of this area will be considered, and important future research directions will be discussed.
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Affiliation(s)
- Dusti A Shay
- Nutrition and Exercise Physiology, University of Missouri Columbia, MO, United States
| | | | - Cheryl S Rosenfeld
- Bond Life Sciences Center, University of Missouri Columbia, MO, United States.,Thompson Center for Autism and Neurobehavioral Disorders, University of Missouri Columbia, MO, United States.,Department of Biomedical Sciences, University of Missouri Columbia, MO, United States
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23
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Hinton PS, Ortinau LC, Dirkes RK, Shaw EL, Richard MW, Zidon TZ, Britton SL, Koch LG, Vieira-Potter VJ. Soy protein improves tibial whole-bone and tissue-level biomechanical properties in ovariectomized and ovary-intact, low-fit female rats. Bone Rep 2018; 8:244-254. [PMID: 29922706 PMCID: PMC6005802 DOI: 10.1016/j.bonr.2018.05.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 05/15/2018] [Accepted: 05/17/2018] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Osteoporosis and related fractures, decreased physical activity, and metabolic dysfunction are serious health concerns for postmenopausal women. Soy protein might counter the negative effects of menopause on bone and metabolic health due to the additive or synergistic effects of its bioactive components. OBJECTIVE To evaluate the effects of ovariectomy (OVX) and a soy-protein diet (SOY) on bone outcomes in female, low-capacity running (LCR) rats selectively bred for low aerobic fitness as a model of menopause. METHODS At 27 weeks of age, LCR rats (N = 40) underwent OVX or sham (SHAM) surgery and were randomized to one of two isocaloric and isonitrogenous plant-protein-based dietary treatments: 1) soy-protein (SOY; soybean meal); or, 2) control (CON, corn-gluten meal), resulting in four treatment groups. During the 30-week dietary intervention, animals were provided ad libitum access to food and water; body weight and food intake were measured weekly. At completion of the 30-week intervention, body composition was measured using EchoMRI; animals were fasted overnight, euthanized, and blood and hindlimbs collected. Plasma markers of bone formation (osteocalcin, OC; N-terminal propeptide of type I procollagen, P1NP) and resorption (tartrate-resistant acid phosphatase, TRAP5b; C-terminal telopeptide of type I collagen, CTx) were measured using ELISA. Tibial trabecular microarchitecture and cortical geometry were evaluated using μCT; and torsional loading to failure was used to assess cortical biomechanical properties. Advanced glycation end-product (AGE) content of the femur was measured using a fluorimetric assay, and was expressed relative to collagen content measured by a colorimetric OH-proline assay. Two-factor ANOVA or ANOVCA was used to test for significant main and interactive effects of ovarian status (OV STAT: OVX vs. SHAM) and DIET (SOY vs. CON); final body weight was included as a covariate for body-weight-dependent cortical geometry and biomechanical properties. RESULTS OVX had significantly greater CTx than SHAM; SOY did not affect bone turnover markers. OVX adversely affected trabecular microarchitecture as evidenced by reduced BV/TV, trabecular thickness (Tb.Th), trabecular number (Tb.N), and connectivity density (Conn.D), and by increased trabecular separation (Tb.Sp) and structural model index (SMI). SOY increased BV/TV only in ovary-intact animals. There was no effect of OVX or SOY on tibial cortical geometry. In SHAM and OVX rats, SOY significantly improved whole-bone strength and stiffness; SOY also increased tissue-level stiffness and tended to increase tissue-level strength (p = 0.067). There was no effect of OVX or SOY on AGE content. CONCLUSION Soy protein improved cortical bone biomechanical properties in female low-fit rats, regardless of ovarian hormone status.
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Key Words
- Bone
- CON, control diet
- CTx, C-terminal telopeptide of type I collagen
- Conn.D, connectivity density
- G, shear modulus of elasticity
- Ks, torsional stiffness
- LCR, low-capacity runners
- Menopause
- OC, osteocalcin
- OVX, ovariectomy
- Osteoporosis
- Ovariectomy
- P1NP, N-terminal propeptide of type I procollagen
- SHM, Sham
- SOY, Soy-protein-based diet
- Soy protein
- Su, ultimate tensile strength
- TRAP5b, tartrate-resistant acid phosphatase
- Tb.N, trabecular number
- Tb.Sp, trabecular separation
- Tb.Th, trabecular thickness
- Tmax, maximal torque
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Affiliation(s)
- Pamela S. Hinton
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, USA
| | - Laura C. Ortinau
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, USA
| | - Rebecca K. Dirkes
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, USA
| | - Emily L. Shaw
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, USA
| | - Matthew W. Richard
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, USA
| | - Terese Z. Zidon
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, USA
| | - Steven L. Britton
- Department of Anesthesiology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Lauren G. Koch
- Department of Anesthesiology, University of Michigan Medical School, Ann Arbor, MI, USA
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24
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Zidon TM, Park YM, Welly RJ, Woodford ML, Scroggins RJ, Britton SL, Koch LG, Booth FW, Padilla J, Kanaley JA, Vieira-Potter VJ. Voluntary wheel running improves adipose tissue immunometabolism in ovariectomized low-fit rats. Adipocyte 2018; 7:20-34. [PMID: 29226756 DOI: 10.1080/21623945.2017.1402991] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Loss of ovarian hormones is associated with increased adiposity, white adipose tissue (WAT) inflammation, and insulin resistance (IR). Previous work demonstrated ovariectomized (OVX) rats bred for high aerobic fitness (HCR) are protected against weight gain and IR compared to rats bred for low aerobic fitness (LCR) yet wheel running prevents OVX-induced IR in LCR rats. The purpose of this study was to determine whether adipose tissue immunometabolic characteristics from female HCR and LCR rats differs before or after OVX, and whether wheel running mitigates OVX-induced adipose tissue immunometabolic changes in LCR rats. Female OVX HCR and LCR rats were all fed a high fat diet (HFD) (n = 7-8/group) and randomized to either a running wheel or remain sedentary for 11 weeks. Ovary-intact rats (n = 7-12/group) were fed a standard chow diet with no wheel. Ovary-intact LCR rats had a greater visceral WAT inflammatory profile compared to HCR. Following OVX, sedentary LCR rats had greater serum leptin (p<0.001) and WAT inflammation (p<0.05) than sedentary HCR. Wheel running normalized the elevated serum leptin and reduced both visceral (p<0.05) and subcutaneous (p<0.03) WAT inflammatory markers in the LCR rats. Paradoxically, wheel running increased some markers of WAT inflammation in OVX HCR rats (p<0.05), which correlated with observed weight gain. Taken together, HCR rats appear to have a healthier WAT immune and metabolic profile compared to LCR, even following OVX. Wheel running improves WAT health in previously sedentary LCR rats. On the other hand, increased WAT inflammation is associated with adiposity gain despite a high volume of wheel running in HCR rats.
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Affiliation(s)
- Terese M. Zidon
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, US
| | - Young-Min Park
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, US
| | - Rebecca J. Welly
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, US
| | - Makenzie L. Woodford
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, US
| | - Rebecca J. Scroggins
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, US
| | - Steven L. Britton
- Department of Anesthesiology, University of Michigan Medical School, Ann Arbor, MI, US
- Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, MI, US
| | - Lauren G. Koch
- Department of Anesthesiology, University of Michigan Medical School, Ann Arbor, MI, US
| | - Frank W. Booth
- Department of Biomedical Sciences, University of Missouri, Columbia, MO, US
| | - Jaume Padilla
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, US
- Department of Child Health, University of Missouri, Columbia, MO, US
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO, US
| | - Jill A. Kanaley
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, US
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25
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Abstract
Diverse cognitive functions in many vertebrate species are influenced by local conversion of androgens to 17β-estradiol (E2) by aromatase. This enzyme is highly expressed in various brain regions across species, with some inter-species variation in terms of regional brain expression. Since women with breast cancer and men and women with other disorders are often treated with aromatase inhibitors (AI), these populations might be especially vulnerable to cognitive deficits due to low neuroE2 synthesis, i.e., synthesis of E2 directly within the brain. Animal models have been useful in deciphering aromatase effects on cognitive functions. Consequences of AI administration at various life cycle stages have been assessed on auditory, song processing, and spatial memory in birds and various aspects of cognition in rodent models. Additionally, cognitive deficits have been described in aromatase knockout (ArKO) mice that systemically lack this gene throughout their lifespan. This review will consider evidence to date that AI treatment in male and female rodent models, birds, and humans results in cognitive impairments. How brain aromatase regulates cognitive function throughout the lifespan, and gaps in current knowledge will be considered, along with future directions to better define how aromatase might guide learning and memory from early development through the geriatric period. Better understanding the importance of E2 synthesis on neurobehavioral responses at various ages will likely aid in the discovery of therapeutic strategies to prevent potential cognitive deficits, including Alzheimer's Disease, in individuals treated with AI or those possessing CYP19 gene polymorphisms, as well as cognitive effects of normal aging that may be related to changes in brain aromatase activity.
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Affiliation(s)
- Cheryl S. Rosenfeld
- Bond Life Sciences Center, University of Missouri, Columbia, MO, United States
- Thompson Center for Autism and Neurobehavioral Disorders, University of Missouri, Columbia, MO, United States
- Biomedical Sciences, University of Missouri, Columbia, MO, United States
- *Correspondence: Cheryl S. Rosenfeld
| | - Dusti A. Shay
- Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, United States
| | - Victoria J. Vieira-Potter
- Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, United States
- Victoria J. Vieira-Potter
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26
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Grunewald ZI, Winn NC, Gastecki ML, Woodford ML, Ball JR, Hansen SA, Sacks HS, Vieira-Potter VJ, Padilla J. Removal of interscapular brown adipose tissue increases aortic stiffness despite normal systemic glucose metabolism in mice. Am J Physiol Regul Integr Comp Physiol 2017; 314:R584-R597. [PMID: 29351429 DOI: 10.1152/ajpregu.00332.2017] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Brown adipose tissue (BAT) is considered protective against obesity and related cardiometabolic dysfunction. Indeed, activation of BAT improves glucose homeostasis and attenuates cardiovascular disease development. However, whether a reduction in BAT mass perturbs metabolic function and increases risk for cardiovascular disease remains largely unknown. To address this question, C57BL/6J male mice underwent a sham procedure or surgical bilateral excision of interscapular BAT (iBATx) and were fed a normal chow or a Western diet for 18 wk, creating four groups ( n = 10/group). Mice were housed at 25°C. As expected, the Western diet increased final body weight and adiposity; however, contrary to our hypothesis, iBATx did not potentiate adiposity independent of diet. Furthermore, iBATx did not affect indexes of glycemic control (HbA1c, fasting glucose and insulin, and glucose area under the curve during a glucose tolerance test) and produced minimal-to-no effects on lipid homeostasis. The absence of metabolic disturbances with iBATx was not attributed to regrowth of iBAT or a "browning" or proliferative compensatory response of other BAT depots. Notably, iBATx caused an increase in aortic stiffness in normal chow-fed mice only, which was associated with an increase in aortic uncoupling protein-1. Collectively, we demonstrated that, at 25°C (i.e., limited thermal stress conditions), a substantial reduction in BAT mass via iBATx does not disrupt systemic glucose metabolism, challenging the current dogma that preservation of BAT is obligatory for optimal metabolic function. However, iBATx caused aortic stiffening in lean mice, hence supporting the existence of an interplay between iBAT and aortic stiffness, independent of alterations in glucose homeostasis.
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Affiliation(s)
- Zachary I Grunewald
- Department of Nutrition and Exercise Physiology, University of Missouri , Columbia, Missouri
| | - Nathan C Winn
- Department of Nutrition and Exercise Physiology, University of Missouri , Columbia, Missouri
| | - Michelle L Gastecki
- Department of Nutrition and Exercise Physiology, University of Missouri , Columbia, Missouri
| | - Makenzie L Woodford
- Department of Nutrition and Exercise Physiology, University of Missouri , Columbia, Missouri
| | - James R Ball
- Department of Nutrition and Exercise Physiology, University of Missouri , Columbia, Missouri
| | - Sarah A Hansen
- Office of Animal Resources, University of Missouri , Columbia, Missouri
| | - Harold S Sacks
- Endocrine and Diabetes Division, Veterans Affairs Greater Los Angeles Healthcare System, Los Angeles, California.,Department of Medicine, David Geffen School of Medicine, University of California at Los Angeles , Los Angeles, California
| | | | - Jaume Padilla
- Department of Nutrition and Exercise Physiology, University of Missouri , Columbia, Missouri.,Dalton Cardiovascular Research Center, University of Missouri , Columbia, Missouri.,Child Health, University of Missouri , Columbia, Missouri
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27
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Porter JW, Rowles JL, Fletcher JA, Zidon TM, Winn NC, McCabe LT, Park YM, Perfield JW, Thyfault JP, Rector RS, Padilla J, Vieira-Potter VJ. Anti-inflammatory effects of exercise training in adipose tissue do not require FGF21. J Endocrinol 2017; 235:97-109. [PMID: 28765264 PMCID: PMC5581275 DOI: 10.1530/joe-17-0190] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Accepted: 08/01/2017] [Indexed: 12/20/2022]
Abstract
Exercise enhances insulin sensitivity; it also improves adipocyte metabolism and reduces adipose tissue inflammation through poorly defined mechanisms. Fibroblast growth factor 21 (FGF21) is a pleiotropic hormone-like protein whose insulin-sensitizing properties are predominantly mediated via receptor signaling in adipose tissue (AT). Recently, FGF21 has also been demonstrated to have anti-inflammatory properties. Meanwhile, an association between exercise and increased circulating FGF21 levels has been reported in some, but not all studies. Thus, the role that FGF21 plays in mediating the positive metabolic effects of exercise in AT are unclear. In this study, FGF21-knockout (KO) mice were used to directly assess the role of FGF21 in mediating the metabolic and anti-inflammatory effects of exercise on white AT (WAT) and brown AT (BAT). Male FGF21KO and wild-type mice were provided running wheels or remained sedentary for 8 weeks (n = 9-15/group) and compared for adiposity, insulin sensitivity (i.e., HOMA-IR, Adipo-IR) and AT inflammation and metabolic function (e.g., mitochondrial enzyme activity, subunit content). Adiposity and Adipo-IR were increased in FGF21KO mice and decreased by EX. The BAT of FGF21KO animals had reduced mitochondrial content and decreased relative mass, both normalized by EX. WAT and BAT inflammation was elevated in FGF21KO mice, reduced in both genotypes by EX. EX increased WAT Pgc1alpha gene expression, citrate synthase activity, COX I content and total AMPK content in WT but not FGF21KO mice. Collectively, these findings reveal a previously unappreciated anti-inflammatory role for FGF21 in WAT and BAT, but do not support that FGF21 is necessary for EX-mediated anti-inflammatory effects.
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Affiliation(s)
- Jay W Porter
- Department of Nutrition and Exercise PhysiologyUniversity of Missouri, Columbia, Missouri, USA
| | - Joe L Rowles
- Department of Nutrition and Exercise PhysiologyUniversity of Missouri, Columbia, Missouri, USA
- Division of Nutritional SciencesUniversity of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Justin A Fletcher
- Department of Nutrition and Exercise PhysiologyUniversity of Missouri, Columbia, Missouri, USA
- Research Service-Harry S Truman Memorial VA HospitalColumbia, Missouri, USA
- University of Texas Southwestern Medical CenterDallas, Texas, USA
| | - Terese M Zidon
- Department of Nutrition and Exercise PhysiologyUniversity of Missouri, Columbia, Missouri, USA
| | - Nathan C Winn
- Department of Nutrition and Exercise PhysiologyUniversity of Missouri, Columbia, Missouri, USA
| | - Leighton T McCabe
- Department of Nutrition and Exercise PhysiologyUniversity of Missouri, Columbia, Missouri, USA
| | - Young-Min Park
- Department of Nutrition and Exercise PhysiologyUniversity of Missouri, Columbia, Missouri, USA
- University of Colorado Denver - Anschutz Medical CampusDenver, Colorado, USA
| | | | - John P Thyfault
- Department of Molecular and Integrative PhysiologyUniversity of Kansas Medical Center, Kansas City, Kansas, USA
- Kansas City VA Medical CenterKansas City, Missouri, USA
| | - R Scott Rector
- Department of Nutrition and Exercise PhysiologyUniversity of Missouri, Columbia, Missouri, USA
- Research Service-Harry S Truman Memorial VA HospitalColumbia, Missouri, USA
| | - Jaume Padilla
- Department of Nutrition and Exercise PhysiologyUniversity of Missouri, Columbia, Missouri, USA
- Department of Child HealthUniversity of Missouri, Columbia, Missouri, USA
- Dalton Cardiovascular Research CenterUniversity of Missouri, Columbia, Missouri, USA
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28
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Park YM, Padilla J, Kanaley JA, Zidon TM, Welly RJ, Britton SL, Koch LG, Thyfault JP, Booth FW, Vieira-Potter VJ. Voluntary Running Attenuates Metabolic Dysfunction in Ovariectomized Low-Fit Rats. Med Sci Sports Exerc 2017; 49:254-264. [PMID: 27669449 DOI: 10.1249/mss.0000000000001101] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
INTRODUCTION Ovariectomy and high-fat diet (HFD) worsen obesity and metabolic dysfunction associated with low aerobic fitness. Exercise training mitigates metabolic abnormalities induced by low aerobic fitness, but whether the protective effect is maintained after ovariectomy and HFD is unknown. PURPOSE This study determined whether, after ovariectomy and HFD, exercise training improves metabolic function in rats bred for low intrinsic aerobic capacity. METHODS Female rats selectively bred for low (LCR) and high (HCR) intrinsic aerobic capacity (n = 30) were ovariectomized, fed HFD, and randomized to either a sedentary (SED) or voluntary wheel running (EX) group. Resting energy expenditure, glucose tolerance, and spontaneous physical activity were determined midway through the experiment, whereas body weight, wheel running volume, and food intake were assessed throughout the study. Body composition, circulating metabolic markers, and skeletal muscle gene and protein expression were measured at sacrifice. RESULTS EX reduced body weight and adiposity in LCR rats (-10% and -50%, respectively; P < 0.05) and, unexpectedly, increased these variables in HCR rats (+7% and +37%, respectively; P < 0.05) compared with their respective SED controls, likely because of dietary overcompensation. Wheel running volume was approximately fivefold greater in HCR than LCR rats, yet EX enhanced insulin sensitivity equally in LCR and HCR rats (P < 0.05). This EX-mediated improvement in metabolic function was associated with thee gene upregulation of skeletal muscle interleukin-6 and interleukin-10. EX also increased resting energy expenditure, skeletal muscle mitochondrial content (oxidative phosphorylation complexes and citrate synthase activity), and adenosine monophosphate-activated protein kinase activation similarly in both lines (all P <0.05). CONCLUSION Despite a fivefold difference in running volume between rat lines, EX similarly improved systemic insulin sensitivity, resting energy expenditure, and skeletal muscle mitochondrial content and adenosine monophosphate-activated protein kinase activation in ovariectomized LCR and HCR rats fed HFD compared with their respective SED controls.
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Affiliation(s)
- Young-Min Park
- 1Nutrition and Exercise Physiology, University of Missouri, Columbia, MO; 2Child Health, University of Missouri, Columbia, MO; 3Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO; 4Department of Anesthesiology, University of Michigan Medical School, Ann Arbor, MI; 5Department of Molecular Integrative Physiology, University of Kansas Medical Center, Kansas City, KS; and 6Biomedical Sciences, University of Missouri, Columbia, MO
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29
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Winn NC, Grunewald ZI, Gastecki ML, Woodford ML, Welly RJ, Clookey SL, Ball JR, Gaines TL, Karasseva NG, Kanaley JA, Sacks HS, Vieira-Potter VJ, Padilla J. Deletion of UCP1 enhances ex vivo aortic vasomotor function in female but not male mice despite similar susceptibility to metabolic dysfunction. Am J Physiol Endocrinol Metab 2017; 313:E402-E412. [PMID: 28655717 PMCID: PMC5668596 DOI: 10.1152/ajpendo.00096.2017] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Revised: 06/08/2017] [Accepted: 06/19/2017] [Indexed: 02/08/2023]
Abstract
Females are typically more insulin sensitive than males, which may be partly attributed to greater brown adipose tissue (BAT) activity and uncoupling protein 1 (UCP1) content. Accordingly, we tested the hypothesis that UCP1 deletion would abolish sex differences in insulin sensitivity and that whitening of thoracic periaortic BAT caused by UCP1 loss would be accompanied with impaired thoracic aortic function. Furthermore, because UCP1 exerts antioxidant effects, we examined whether UCP1 deficiency-induced metabolic dysfunction was mediated by oxidative stress. Compared with males, female mice had lower HOMA- and AT-insulin resistance (IR) despite no significant differences in BAT UCP1 content. UCP1 ablation increased HOMA-IR, AT-IR, and whitening of BAT in both sexes. Expression of UCP1 in thoracic aorta was greater in wild-type females compared with males. Importantly, deletion of UCP1 enhanced aortic vasomotor function in females only. UCP1 ablation did not promote oxidative stress in interscapular BAT. Furthermore, daily administration of the free radical scavenger tempol for 8 wk did not abrogate UCP1 deficiency-induced increases in adiposity, hyperinsulinemia, or liver steatosis. Collectively, we report that 1) in normal chow-fed mice housed at 25°C, aortic UCP1 content was greater in females than males and its deletion improved ex vivo aortic vasomotor function in females only; 2) constitutive UCP1 content in BAT was similar between females and males and loss of UCP1 did not abolish sex differences in insulin sensitivity; and 3) the metabolic disruptions caused by UCP1 ablation did not appear to be contingent upon increased oxidative stress in mice under normal dietary conditions.
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Affiliation(s)
- Nathan C Winn
- Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri
| | - Zachary I Grunewald
- Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri
| | - Michelle L Gastecki
- Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri
| | - Makenzie L Woodford
- Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri
| | - Rebecca J Welly
- Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri
| | - Stephanie L Clookey
- Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri
| | - James R Ball
- Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri
| | - T'Keaya L Gaines
- Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri
| | | | - Jill A Kanaley
- Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri
| | - Harold S Sacks
- Endocrine and Diabetes Division, Veterans Affairs Greater Los Angeles Healthcare System and Department of Medicine, David Geffen School of Medicine, UCLA, Los Angeles, California
| | | | - Jaume Padilla
- Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri;
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, Missouri; and
- Child Health, University of Missouri, Columbia, Missouri
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Park YM, Kanaley JA, Zidon TM, Welly RJ, Scroggins RJ, Britton SL, Koch LG, Thyfault JP, Booth FW, Padilla J, Vieira-Potter VJ. Ovariectomized Highly Fit Rats Are Protected against Diet-Induced Insulin Resistance. Med Sci Sports Exerc 2017; 48:1259-69. [PMID: 26885638 DOI: 10.1249/mss.0000000000000898] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
INTRODUCTION In the absence of exercise training, rats selectively bred for high intrinsic aerobic capacity (high-capacity running (HCR)) are protected against ovariectomy (OVX)-induced insulin resistance (IR) and obesity compared with those bred for low intrinsic aerobic capacity (low-capacity running (LCR)). PURPOSE This study determined whether OVX HCR rats remain protected with exposure to high-fat diet (HFD) compared with OVX LCR rats. METHODS Female HCR and LCR rats (n = 36; age, 27-33 wk) underwent OVX and were randomized to a standard chow diet (NC, 5% kcal fat) or HFD (45% kcal fat) ad libitum for 11 wk. Total energy expenditure, resting energy expenditure, spontaneous physical activity (SPA), and glucose tolerance were assessed midway, whereas fasting circulating metabolic markers, body composition, adipose tissue distribution, and skeletal muscle adenosine monophosphate-activated protein kinase (AMPK), and mitochondrial markers were assessed at sacrifice. RESULTS Both HCR and LCR rats experienced HFD-induced increases in total and visceral adiposity after OVX. Despite similar gains in adiposity, HCR rats were protected from HFD-induced IR and reduced total energy expenditure observed in LCR rats (P < 0.05). This metabolic protection was likely attributed to a compensatory increase in SPA and associated preservation of skeletal muscle AMPK activity in HCR; however, HFD significantly reduced SPA and AMPK activity in LCR (P < 0.05). In both lines, HFD reduced citrate synthase activity, gene expression of markers of mitochondrial biogenesis (tFAM, NRF1, and PGC-1α), and protein levels of mitochondrial oxidative phosphorylation complexes I, II, IV, and V in skeletal muscle (all P < 0.05). CONCLUSION After OVX, HCR and LCR rats differentially respond to HFD such that HCR increase while LCR decrease SPA. This "physical activity compensation" likely confers protection from HFD-induced IR and reduced energy expenditure in HCR rats.
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Affiliation(s)
- Young-Min Park
- 1Nutrition and Exercise Physiology, University of Missouri, Columbia, MO; 2Department of Anesthesiology, University of Michigan Medical School, Ann Arbor, MI; 3Department of Molecular Integrative Physiology, University of Kansas Medical Center, Kansas City, KS; 4Biomedical Sciences, University of Missouri, Columbia, MO; 5Child Health, University of Missouri, Columbia, MO; 6Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO
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Cross TWL, Zidon TM, Welly RJ, Park YM, Britton SL, Koch LG, Rottinghaus GE, de Godoy MRC, Padilla J, Swanson KS, Vieira-Potter VJ. Soy Improves Cardiometabolic Health and Cecal Microbiota in Female Low-Fit Rats. Sci Rep 2017; 7:9261. [PMID: 28835674 PMCID: PMC5569109 DOI: 10.1038/s41598-017-08965-0] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Accepted: 07/20/2017] [Indexed: 12/13/2022] Open
Abstract
Phytoestrogen-rich soy is known to ameliorate menopause-associated obesity and metabolic dysfunction for reasons that are unclear. The gut microbiota have been linked with the development of obesity and metabolic dysfunction. We aimed to determine the impact of soy on cardiometabolic health, adipose tissue inflammation, and the cecal microbiota in ovariectomized (OVX) rats bred for low-running capacity (LCR), a model that has been previously shown to mimic human menopause compared to sham-operated (SHM) intact control LCR rats. In this study, soy consumption, without affecting energy intake or physical activity, significantly improved insulin sensitivity and body composition of OVX rats bred for low-running capacity. Furthermore, soy significantly improved blood lipid profile, adipose tissue inflammation, and aortic stiffness of LCR rats. Compared to a soy-free control diet, soy significantly shifted the cecal microbial community of LCR rats, resulting in a lower Firmicutes:Bacteroidetes ratio. Correlations among metabolic parameters and cecal bacterial taxa identified in this study suggest that taxa Prevotella, Dorea, and Phascolarctobacterium may be taxa of interest. Our results suggest that dietary soy ameliorates adiposity, insulin sensitivity, adipose tissue inflammation, and arterial stiffness and exerts a beneficial shift in gut microbial communities in a rat model that mimics human menopause.
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Affiliation(s)
- Tzu-Wen L Cross
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Terese M Zidon
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, 65211, USA
| | - Rebecca J Welly
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, 65211, USA
| | - Young-Min Park
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, 65211, USA
| | - Steven L Britton
- Department of Anesthesiology, University of Michigan, Ann Arbor, MI, 48109, USA
- Department of Molecular & Integrative Physiology, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Lauren G Koch
- Department of Anesthesiology, University of Michigan, Ann Arbor, MI, 48109, USA
| | - George E Rottinghaus
- Department of Biomedical Sciences, University of Missouri, Columbia, MO, 65211, USA
| | - Maria R Cattai de Godoy
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Jaume Padilla
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, 65211, USA
- Department of Child Health, University of Missouri, Columbia, MO, 65211, USA
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO, 65211, USA
| | - Kelly S Swanson
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Victoria J Vieira-Potter
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, 65211, USA.
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Ruegsegger GN, Grigsby KB, Kelty TJ, Zidon TM, Childs TE, Vieira-Potter VJ, Klinkebiel DL, Matheny M, Scarpace PJ, Booth FW. Maternal Western diet age-specifically alters female offspring voluntary physical activity and dopamine- and leptin-related gene expression. FASEB J 2017; 31:5371-5383. [PMID: 28794174 DOI: 10.1096/fj.201700389r] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Accepted: 07/25/2017] [Indexed: 01/30/2023]
Abstract
Prenatal overnutrition affects development into adulthood and influences risk of obesity. We assessed the transgenerational effect of maternal Western diet (WD) consumption on offspring physical activity. Voluntary wheel running was increased in juvenile (4-7 wk of age), but decreased in adult (16-19 wk of age), F1 female WD offspring In contrast, no wheel-running differences in F1 male offspring were observed. Increased wheel running in juvenile female WD offspring was associated with up-regulated dopamine receptor (DRD)-1 and -2 in the nucleus accumbens (NAc) and with down-regulated Lepr in the ventral tegmental area (VTA). Conversely, decreased wheel running by adult female WD offspring was associated with down-regulated DRD1 in the NAc and with up-regulated Lepr in the VTA. Body fat, leptin, and insulin were increased in male, but not in female, F1 WD offspring. Recombinant virus (rAAV) leptin antagonism in the VTA decreased wheel running in standard diet but not in WD F1 female offspring. Analysis of F2 offspring found no differences in wheel running or adiposity in male or female offspring, suggesting that changes in the F1 generation were related to in utero somatic reprogramming. Our findings indicate prenatal WD exposure leads to age-specific changes in voluntary physical activity in female offspring that are differentially influenced by VTA leptin antagonism.-Ruegsegger, G. N., Grigsby, K. B., Kelty, T. J., Zidon, T. M., Childs, T. E., Vieira-Potter, V. J., Klinkebiel, D. L., Matheny, M., Scarpace, P. J., Booth, F. W. Maternal Western diet age-specifically alters female offspring voluntary physical activity and dopamine- and leptin-related gene expression.
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Affiliation(s)
- Gregory N Ruegsegger
- Department of Biomedical Sciences, University of Missouri, Columbia, Missouri, USA
| | - Kolter B Grigsby
- Department of Biomedical Sciences, University of Missouri, Columbia, Missouri, USA
| | - Taylor J Kelty
- Department of Biomedical Sciences, University of Missouri, Columbia, Missouri, USA
| | - Terese M Zidon
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri, USA
| | - Thomas E Childs
- Department of Biomedical Sciences, University of Missouri, Columbia, Missouri, USA
| | - Victoria J Vieira-Potter
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri, USA
| | - David L Klinkebiel
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, Nebraska, USA
| | - Michael Matheny
- Department of Pharmacology and Therapeutics, University of Florida, Gainesville, Florida, USA
| | - Phillip J Scarpace
- Department of Pharmacology and Therapeutics, University of Florida, Gainesville, Florida, USA
| | - Frank W Booth
- Department of Biomedical Sciences, University of Missouri, Columbia, Missouri, USA; .,Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri, USA.,Department of Medical Pharmacology and Physiology, University of Missouri, Columbia, Missouri, USA.,Dalton Cardiovascular Research Center, University of Missouri, Columbia, Missouri, USA
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Lee JR, Muckerman JE, Wright AM, Davis DJ, Childs TE, Gillespie CE, Vieira-Potter VJ, Booth FW, Ericsson AC, Will MJ. Sex determines effect of physical activity on diet preference: Association of striatal opioids and gut microbiota composition. Behav Brain Res 2017; 334:16-25. [PMID: 28743600 DOI: 10.1016/j.bbr.2017.07.018] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 07/10/2017] [Accepted: 07/17/2017] [Indexed: 01/14/2023]
Abstract
Previous studies suggest an interaction between the level of physical activity and diet preference. However, this relationship has not been well characterized for sex differences that may exist. The present study examined the influence of sex on diet preference in male and female Wistar rats that were housed under either sedentary (no wheel access) (SED) or voluntary wheel running access (RUN) conditions. Following a 1 week acclimation period to these conditions, standard chow was replaced with concurrent ad libitum access to a choice of 3 pelleted diets (high-fat, high-sucrose, and high-corn starch) in the home cage. SED and RUN conditions remained throughout the next 4 week diet preference assessment period. Body weight, running distance, and intake of each diet were measured daily. At the conclusion of the 4 week diet preference test, animals were sacrificed and brains were collected for mRNA analysis. Fecal samples were also collected before and after the 4 week diet preference phase to characterize microbiota composition. Results indicate sex dependent interactions between physical activity and both behavioral and physiological measures. Females in both RUN and SED conditions preferred the high-fat diet, consuming significantly more high-fat diet than either of the other two diets. While male SED rats also preferred the high-fat diet, male RUN rats consumed significantly less high-fat diet than the other groups, instead preferring all three diets equally. There was also a sex dependent influence of physical activity on both reward related opioid mRNA expression in the ventral striatum and the characterization of gut microbiota. The significant sex differences in response to physical activity observed through both behavioral and physiological measures suggest potential motivational or metabolic difference between males and females. The findings highlight the necessity for further exploration between male and female response to physical activity and feeding behavior.
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Affiliation(s)
- Jenna R Lee
- Interdisciplinary Neuroscience Program, University of Missouri, Columbia, MO, USA; Christopher Bond Life Sciences Center, University of Missouri, Columbia, MO, USA.
| | - Julie E Muckerman
- Department of Psychological Sciences, University of Missouri, Columbia, MO, USA
| | - Anna M Wright
- Department of Psychological Sciences, University of Missouri, Columbia, MO, USA
| | - Daniel J Davis
- Department of Veterinary Pathobiology, University of Missouri, Columbia, MO, USA
| | - Tom E Childs
- Department of Biomedical Sciences, University of Missouri, Columbia, MO, USA
| | | | | | - Frank W Booth
- Department of Biomedical Sciences, University of Missouri, Columbia, MO, USA
| | - Aaron C Ericsson
- Department of Veterinary Pathobiology, University of Missouri, Columbia, MO, USA
| | - Matthew J Will
- Interdisciplinary Neuroscience Program, University of Missouri, Columbia, MO, USA; Christopher Bond Life Sciences Center, University of Missouri, Columbia, MO, USA; Department of Psychological Sciences, University of Missouri, Columbia, MO, USA
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Manrique-Acevedo C, Ramirez-Perez FI, Padilla J, Vieira-Potter VJ, Aroor AR, Barron BJ, Chen D, Haertling D, Declue C, Sowers JR, Martinez-Lemus LA. Absence of Endothelial ERα Results in Arterial Remodeling and Decreased Stiffness in Western Diet-Fed Male Mice. Endocrinology 2017; 158:1875-1885. [PMID: 28430983 PMCID: PMC5460939 DOI: 10.1210/en.2016-1831] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 04/13/2017] [Indexed: 01/16/2023]
Abstract
The role of estrogen receptor-α (ERα) signaling in the vasculature of females has been described under different experimental conditions and our group recently reported that lack of endothelial cell (EC) ERα in female mice fed a Western diet (WD) results in amelioration of vascular stiffness. Conversely, the role of ERα in the male vasculature in this setting has not been explored. In conditions of overnutrition and insulin resistance, augmented arterial stiffness, endothelial dysfunction, and arterial remodeling contribute to the development of cardiovascular disease. Here, we used a rodent model of decreased ERα expression in ECs [endothelial cell estrogen receptor-α knockout (EC-ERαKO)] to test the hypothesis that, similar to our findings in females, loss of ERα signaling in the endothelium of insulin-resistant males would result in decreased arterial stiffness. EC-ERαKO male mice and same-sex littermates were fed a WD (high in fructose and fat) for 20 weeks and then assessed for vascular function and stiffness. EC-ERαKO mice were heavier than littermates but exhibited decreased vascular stiffness without differences in endothelial-dependent vasodilatory responses. Mesenteric arteries from EC-ERαKO mice had significantly increased diameters, wall cross-sectional areas, and mean wall thicknesses, indicative of outward hypertrophic remodeling. This remodeling paralleled an increased vessel wall content of collagen and elastin, inhibition of matrix metalloproteinase activation and a decrease of the incremental modulus of elasticity. In addition, internal elastic lamina fenestrae were more abundant in the EC-ERαKO mice. In conclusion, loss of endothelial ERα reduces vascular stiffness in male mice fed a WD with an associated outward hypertrophic remodeling of resistance arteries.
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Affiliation(s)
- Camila Manrique-Acevedo
- Department of Medicine, Division of Endocrinology, University of Missouri, Columbia, Missouri 65212
| | - Francisco I Ramirez-Perez
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, Missouri 65211
- Department of Biological Engineering, University of Missouri, Columbia, Missouri 65211
| | - Jaume Padilla
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, Missouri 65211
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri 65211
- Department of Child Health, University of Missouri, Columbia, Missouri 65212
| | - Victoria J Vieira-Potter
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri 65211
| | - Annayya R Aroor
- Department of Medicine, Division of Endocrinology, University of Missouri, Columbia, Missouri 65212
| | - Brady J Barron
- Department of Medicine, Division of Endocrinology, University of Missouri, Columbia, Missouri 65212
| | - Dongqing Chen
- Department of Medicine, Division of Endocrinology, University of Missouri, Columbia, Missouri 65212
| | - Dominic Haertling
- School of Medicine, University of Missouri, Columbia, Missouri 65212
| | - Cory Declue
- School of Medicine, University of Missouri, Columbia, Missouri 65212
| | - James R Sowers
- Department of Medicine, Division of Endocrinology, University of Missouri, Columbia, Missouri 65212
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, Missouri 65211
- Department of Medical Pharmacology and Physiology, University of Missouri, Columbia, Missouri 65212
- Research Service, Harry S. Truman Memorial Veterans Hospital, Columbia, Missouri 65201
| | - Luis A Martinez-Lemus
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, Missouri 65211
- Department of Biological Engineering, University of Missouri, Columbia, Missouri 65211
- Department of Medical Pharmacology and Physiology, University of Missouri, Columbia, Missouri 65212
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Clegg D, Hevener AL, Moreau KL, Morselli E, Criollo A, Van Pelt RE, Vieira-Potter VJ. Sex Hormones and Cardiometabolic Health: Role of Estrogen and Estrogen Receptors. Endocrinology 2017; 158:1095-1105. [PMID: 28323912 PMCID: PMC6283431 DOI: 10.1210/en.2016-1677] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Accepted: 02/14/2017] [Indexed: 01/08/2023]
Abstract
With increased life expectancy, women will spend over three decades of life postmenopause. The menopausal transition increases susceptibility to metabolic diseases such as obesity, diabetes, cardiovascular disease, and cancer. Thus, it is more important than ever to develop effective hormonal treatment strategies to protect aging women. Understanding the role of estrogens, and their biological actions mediated by estrogen receptors (ERs), in the regulation of cardiometabolic health is of paramount importance to discover novel targeted therapeutics. In this brief review, we provide a detailed overview of the literature, from basic science findings to human clinical trial evidence, supporting a protective role of estrogens and their receptors, specifically ERα, in maintenance of cardiometabolic health. In so doing, we provide a concise mechanistic discussion of some of the major tissue-specific roles of estrogens signaling through ERα. Taken together, evidence suggests that targeted, perhaps receptor-specific, hormonal therapies can and should be used to optimize the health of women as they transition through menopause, while reducing the undesired complications that have limited the efficacy and use of traditional hormone replacement interventions.
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Affiliation(s)
- Deborah Clegg
- Department of Biomedical Sciences, Diabetes and Obesity Research Institute, Cedars-Sinai Medical Center, Los Angeles, California 90048
| | - Andrea L Hevener
- Department of Medicine, University of California Los Angeles, Los Angeles, California 90095
| | - Kerrie L Moreau
- Division of Geriatric Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado 80045
- Denver Veterans Administration Medical Center, Geriatric Research Education and Clinical Center, Denver, Colorado 80220
| | - Eugenia Morselli
- Department of Physiology, Faculty of Biological Sciences, Pontificia Universidad Católica de Chile, 8331150, Santiago, Chile
| | - Alfredo Criollo
- Advanced Center for Chronic Diseases and Center for Molecular Studies of the Cell, Universidad de Chile, Santiago 8380492, Chile
- Instituto de Investigación en Ciencias Odontológicas, Facultad de Odontología, Universidad de Chile, Santiago 8380492, Chile
| | - Rachael E Van Pelt
- Division of Geriatric Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado 80045
| | - Victoria J Vieira-Potter
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri 65211
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Porter J, Rowles JL, Fletcher JA, Zidon TM, Winn NC, McCabe L, Park YM, Perfield JW, Thyfault JP, Rector RS, Padilla J, Vieira-Potter VJ. Exercise Normalizes Dysfunctional Adipose Tissue Phenotype in FGF21-Null Mice. Med Sci Sports Exerc 2017. [DOI: 10.1249/01.mss.0000519822.07921.89] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Winn NC, Vieira-Potter VJ, Gastecki ML, Welly RJ, Scroggins RJ, Zidon TM, Gaines TL, Woodford ML, Karasseva NG, Kanaley JA, Sacks HS, Padilla J. Loss of UCP1 exacerbates Western diet-induced glycemic dysregulation independent of changes in body weight in female mice. Am J Physiol Regul Integr Comp Physiol 2016; 312:R74-R84. [PMID: 27881400 DOI: 10.1152/ajpregu.00425.2016] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Revised: 11/15/2016] [Accepted: 11/17/2016] [Indexed: 01/23/2023]
Abstract
We tested the hypothesis that female mice null for uncoupling protein 1 (UCP1) would have increased susceptibility to Western diet-induced "whitening" of brown adipose tissue (AT) and glucose intolerance. Six-week-old C57BL/6J wild-type (WT) and UCP1 knockout (UCP1-/-) mice, housed at 25°C, were randomized to either a control diet (10% kcal from fat) or Western diet (45% kcal from fat and 1% cholesterol) for 28 wk. Loss of UCP1 had no effect on energy intake, energy expenditure, spontaneous physical activity, weight gain, or visceral white AT mass. Despite similar susceptibility to weight gain compared with WT, UCP1-/- exhibited whitening of brown AT evidenced by a striking ~500% increase in mass and appearance of large unilocular adipocytes, increased expression of genes related to inflammation, immune cell infiltration, and endoplasmic reticulum/oxidative stress (P < 0.05), and decreased mitochondrial subunit protein (COX I, II, III, and IV, P < 0.05), all of which were exacerbated by Western diet (P < 0.05). UCP1-/- mice also developed liver steatosis and glucose intolerance, which was worsened by Western diet. Collectively, these findings demonstrate that loss of UCP1 exacerbates Western diet-induced whitening of brown AT, glucose intolerance, and induces liver steatosis. Notably, the adverse metabolic manifestations of UCP1-/- were independent of changes in body weight, visceral adiposity, and energy expenditure. These novel findings uncover a previously unrecognized metabolic protective role of UCP1 that is independent of its already established role in energy homeostasis.
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Affiliation(s)
- Nathan C Winn
- Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri
| | | | - Michelle L Gastecki
- Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri
| | - Rebecca J Welly
- Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri
| | - Rebecca J Scroggins
- Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri
| | - Terese M Zidon
- Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri
| | - T'Keaya L Gaines
- Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri
| | - Makenzie L Woodford
- Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri
| | | | - Jill A Kanaley
- Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri
| | - Harold S Sacks
- Endocrine and Diabetes Division, Veterans Greater Los Angeles Healthcare System and Department of Medicine, David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, California
| | - Jaume Padilla
- Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri; .,Dalton Cardiovascular Research Center, University of Missouri, Columbia, Missouri; and.,Child Health, University of Missouri, Columbia, Missouri
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Welly RJ, Liu TW, Zidon TM, Rowles JL, Park YM, Smith TN, Swanson KS, Padilla J, Vieira-Potter VJ. Comparison of Diet versus Exercise on Metabolic Function and Gut Microbiota in Obese Rats. Med Sci Sports Exerc 2016; 48:1688-98. [PMID: 27128671 PMCID: PMC4987217 DOI: 10.1249/mss.0000000000000964] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
UNLABELLED Cardiometabolic impairments that begin early in life are particularly critical, because they often predict metabolic dysfunction in adulthood. Obesity, high-fat diet (HFD), and inactivity are all associated with adipose tissue (AT) inflammation and insulin resistance (IR), major predictors of metabolic dysfunction. Recent evidence has also associated the gut microbiome with cardiometabolic health. PURPOSE The objective of this study is to compare equal energy deficits induced by exercise and caloric reduction on cardiometabolic disease risk parameters including AT inflammation, IR, and gut microbiota changes during HFD consumption. METHODS Obesity-prone rats fed HFD were exercise trained (Ex, n = 10) or weight matched to Ex via caloric reduction although kept sedentary (WM, n = 10), and compared with ad libitum HFD-fed (Sed, n = 10) rats for IR, systemic energetics and spontaneous physical activity (SPA), adiposity, and fasting metabolic parameters. Visceral, subcutaneous, periaortic, and brown AT (BAT), liver, aorta, and cecal digesta were examined. RESULTS Despite identical reductions in adiposity, Ex, but not WM, improved IR, increased SPA by approximately 26% (P < 0.05 compared with WM and Sed), and reduced LDL cholesterol (P < 0.05 compared with Sed). WM and Ex both reduced inflammatory markers in all AT depots and aorta, whereas only Ex increased indicators of mitochondrial function in BAT. Ex significantly increased the relative abundance of cecal Streptococcaceae and decreased S24-7 and one undefined genus in Rikenellaceae; WM induced similar changes but did not reach statistical significance. CONCLUSIONS Both Ex and WM reduced AT inflammation across depots, whereas Ex caused more robust changes to gut microbial communities, improved IR, increased fat oxidation, increased SPA, and increased indices of BAT mitochondrial function. Our findings add to the growing body of literature indicating that there are weight-loss-independent metabolic benefits of exercise.
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Affiliation(s)
- Rebecca J. Welly
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO
| | - Tzu-Wen Liu
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL
| | - Terese M. Zidon
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO
| | - Joe L. Rowles
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL
| | - Young-Min Park
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO
| | - T. Nicholas Smith
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO
| | - Kelly S. Swanson
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL
| | - Jaume Padilla
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO
- Department of Child Health, University of Missouri, Columbia, MO
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Ringling RE, Gastecki ML, Woodford ML, Lum-Naihe KJ, Grant RW, Pulakat L, Vieira-Potter VJ, Padilla J. Loss of Nlrp3 Does Not Protect Mice from Western Diet-Induced Adipose Tissue Inflammation and Glucose Intolerance. PLoS One 2016; 11:e0161939. [PMID: 27583382 PMCID: PMC5008778 DOI: 10.1371/journal.pone.0161939] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Accepted: 08/15/2016] [Indexed: 02/03/2023] Open
Abstract
We tested the hypothesis that loss of Nlrp3 would protect mice from Western diet-induced adipose tissue (AT) inflammation and associated glucose intolerance and cardiovascular complications. Five-week old C57BL6J wild-type (WT) and Nlrp3 knockout (Nlrp3-/-) mice were randomized to either a control diet (10% kcal from fat) or Western diet (45% kcal from fat and 1% cholesterol) for 24 weeks (n = 8/group). Contrary to our hypothesis that obesity-mediated white AT inflammation is Nlrp3-dependent, we found that Western diet-induced expression of AT inflammatory markers (i.e., Cd68, Cd11c, Emr1, Itgam, Lgals, Il18, Mcp1, Tnf, Ccr2, Ccl5 mRNAs, and Mac-2 protein) were not accompanied by increased caspase-1 cleavage, a hallmark feature of NLRP3 inflammasome activation. Furthermore, Nlrp3 null mice were not protected from Western diet-induced white or brown AT inflammation. Although Western diet promoted glucose intolerance in both WT and Nlrp3-/- mice, Nlrp3-/- mice were protected from Western diet-induced aortic stiffening. Additionally, Nlrp3-/- mice exhibited smaller cardiomyocytes and reduced cardiac fibrosis, independent of diet. Collectively, these findings suggest that presence of the Nlrp3 gene is not required for Western diet-induced AT inflammation and/or glucose intolerance; yet Nlrp3 appears to play a role in potentiating arterial stiffening, cardiac hypertrophy and fibrosis.
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Affiliation(s)
- Rebecca E. Ringling
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri, United States of America
| | - Michelle L. Gastecki
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri, United States of America
| | - Makenzie L. Woodford
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri, United States of America
| | - Kelly J. Lum-Naihe
- Department of Medical Pharmacology and Physiology, University of Missouri, Columbia, Missouri, United States of America
| | - Ryan W. Grant
- Department of Nutrition Science, Purdue University, West Lafayette, Indiana, United States of America
| | - Lakshmi Pulakat
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri, United States of America
- Department of Medicine, University of Missouri, Columbia, Missouri, United States of America
- Research Service, Harry S Truman Memorial Veterans Affairs Hospital, Columbia, Missouri, United States of America
| | - Victoria J. Vieira-Potter
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri, United States of America
| | - Jaume Padilla
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri, United States of America
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, Missouri, United States of America
- Department of Child Health, University of Missouri, Columbia, Missouri, United States of America
- * E-mail:
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40
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Park YM, Kanaley JA, Padilla J, Zidon T, Welly RJ, Will MJ, Britton SL, Koch LG, Ruegsegger GN, Booth FW, Thyfault JP, Vieira-Potter VJ. Effects of intrinsic aerobic capacity and ovariectomy on voluntary wheel running and nucleus accumbens dopamine receptor gene expression. Physiol Behav 2016; 164:383-9. [PMID: 27297873 DOI: 10.1016/j.physbeh.2016.06.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2016] [Revised: 05/18/2016] [Accepted: 06/07/2016] [Indexed: 12/29/2022]
Abstract
UNLABELLED Rats selectively bred for high (HCR) and low (LCR) aerobic capacity show a stark divergence in wheel running behavior, which may be associated with the dopamine (DA) system in the brain. HCR possess greater motivation for voluntary running along with greater brain DA activity compared to LCR. We recently demonstrated that HCR are not immune to ovariectomy (OVX)-associated reductions in spontaneous cage (i.e. locomotor) activity. Whether HCR and LCR rats differ in their OVX-mediated voluntary wheel running response is unknown. PURPOSE To determine whether HCR are protected from OVX-associated reduction in voluntary wheel running. METHODS Forty female HCR and LCR rats (age ~27weeks) had either SHM or OVX operations, and given access to a running wheel for 11weeks. Weekly wheel running distance was monitored throughout the intervention. Nucleus accumbens (NAc) was assessed for mRNA expression of DA receptors at sacrifice. RESULTS Compared to LCR, HCR ran greater distance and had greater ratio of excitatory/inhibitory DA mRNA expression (both line main effects, P<0.05). Wheel running distance was significantly, positively correlated with the ratio of excitatory/inhibitory DA mRNA expression across animals. In both lines, OVX reduced wheel running (P<0.05). Unexpectedly, although HCR started with significantly greater voluntary wheel running, they had greater OVX-induced reduction in wheel running than LCR such that no differences were found 11weeks after OVX between HCROVX and LCROVX (interaction, P<0.05). This significant reduction in wheel running in HCR was associated with an OVX-mediated reduction in the ratio of excitatory/inhibitory DA mRNA expression. CONCLUSION The DA system in the NAc region may play a significant role in motivation to run in female rats. Compared to LCR, HCR rats run significantly more, which associates with greater ratio of excitatory/inhibitory DA mRNA expression. However, despite greater inherent motivation to run and an associated brain DA mRNA expression profile, HCR rats are not protected against OVX-induced reduction in wheel running or OVX-mediated reduction in the ratio of excitatory/inhibitory DA receptor mRNA expression. OVX-mediated reduction in motivated physical activity may be partially explained by a reduced ratio of excitatory/inhibitory DA receptor mRNA expression for which intrinsic fitness does not confer protection.
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Affiliation(s)
- Young-Min Park
- Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, USA
| | - Jill A Kanaley
- Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, USA
| | - Jaume Padilla
- Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, USA; Child Health, University of Missouri, Columbia, MO, USA; Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO, USA
| | - Terese Zidon
- Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, USA
| | - Rebecca J Welly
- Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, USA
| | - Matthew J Will
- Psychological Sciences, University of Missouri, Columbia, MO, USA
| | - Steven L Britton
- Department of Anesthesiology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Lauren G Koch
- Department of Anesthesiology, University of Michigan Medical School, Ann Arbor, MI, USA
| | | | - Frank W Booth
- Biomedical Sciences, University of Missouri, Columbia, MO, USA
| | - John P Thyfault
- Department of Molecular Integrative Physiology, University of Kansas Medical Center, Kansas City, KS, USA
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41
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Linden MA, Sheldon RD, Meers GM, Ortinau LC, Morris EM, Booth FW, Kanaley JA, Vieira-Potter VJ, Sowers JR, Ibdah JA, Thyfault JP, Laughlin MH, Rector RS. Aerobic exercise training in the treatment of non-alcoholic fatty liver disease related fibrosis. J Physiol 2016; 594:5271-84. [PMID: 27104887 DOI: 10.1113/jp272235] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Accepted: 04/13/2016] [Indexed: 12/23/2022] Open
Abstract
KEY POINTS Physiologically relevant rodent models of non-alcoholic steatohepatitis (NASH) that resemble the human condition are limited. Exercise training and energy restriction are first-line recommendations for the treatment of NASH. Hyperphagic Otsuka Long-Evans Tokushima fatty rats fed a western diet high in fat, sucrose and cholesterol for 24 weeks developed a severe NASH with fibrosis phenotype. Moderate intensity exercise training and modest energy restriction provided some improvement in the histological features of NASH that coincided with alterations in markers of hepatic stellate cell activation and extracellular matrix remodelling. The present study highlights the importance of lifestyle modification, including exercise training and energy restriction, in the regulation of advanced liver disease. ABSTRACT The incidence of non-alcoholic steatohepatitis (NASH) is rising but the efficacy of lifestyle modifications to improve NASH-related outcomes remain unclear. We hypothesized that a western diet (WD) would induce NASH in the Otsuka Long-Evans Tokushima Fatty (OLETF) rat and that lifestyle modification would improve this condition. Eight-week-old Long-Evans Tokushima Otsuka (L) and OLETF (O) rats consumed a control diet (10% kcal fat, 3.5% sucrose) or a WD (45% kcal fat, 17% sucrose, 1% cholesterol) for 24 weeks. At 20 weeks of age, additional WD-fed OLETFs were randomized to sedentary (O-SED), food restriction (O-FR; ∼25% kcal reduction vs. O-SED) or exercise training (O-EX; treadmill running 20 m min(-1) with a 15% incline, 60 min day(-1) , 5 days week(-1) ) conditions for 12 weeks. WD induced a NASH phenotype in OLETFs characterized by hepatic fibrosis (collagen 1α1 mRNA and hydroxyproline content), as well as elevated inflammation and non-alcoholic fatty liver disease activity scores, and hepatic stellate cell activation (α-smooth muscle actin) compared to Long-Evans Tokushima Otsuka rats. FR and EX modestly improved NASH-related fibrosis markers (FR: hydroxyproline content, P < 0.01; EX: collagen 1α1 mRNA, P < 0.05; both: fibrosis score, P < 0.01) and inflammation (both: inflammation score; FR: interleukin-1β and tumor necrosis factor α) vs. O-SED. FR reduced hepatic stellate cell activation markers (transforming growth factor-β protein and α-smooth muscle actin mRNA), whereas EX increased the hepatic stellate cell senescence marker CCN1 (P < 0.01 vs. O-SED). Additionally, both FR and EX normalized extracellular matrix remodelling markers to levels similar to L-WD (P > 0.05). Although neither EX nor FR led to complete resolution of the WD-induced NASH phenotype, both independently benefitted liver fibrosis via altered hepatic stellate cell activation and extracellular matrix remodelling.
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Affiliation(s)
- Melissa A Linden
- Research Service, Harry S Truman Memorial VA Hospital.,Department of Nutrition and Exercise Physiology
| | - Ryan D Sheldon
- Research Service, Harry S Truman Memorial VA Hospital.,Department of Nutrition and Exercise Physiology
| | - Grace M Meers
- Research Service, Harry S Truman Memorial VA Hospital.,Department of Medicine-Division of Gastroenterology and Hepatology
| | | | - E Matthew Morris
- Department of Molecular and Integrative Physiology, University of Kansas Medical Centre, Kansas City, KS, USA
| | - Frank W Booth
- Department of Biomedical Sciences.,Department of Medical Pharmacology and Physiology.,Dalton Cardiovascular Research Centre
| | | | | | - James R Sowers
- Research Service, Harry S Truman Memorial VA Hospital.,Medicine-Division of Endocrinology, University of Missouri, Columbia, MO, USA
| | - Jamal A Ibdah
- Research Service, Harry S Truman Memorial VA Hospital.,Department of Medicine-Division of Gastroenterology and Hepatology.,Department of Medical Pharmacology and Physiology
| | - John P Thyfault
- Department of Molecular and Integrative Physiology, University of Kansas Medical Centre, Kansas City, KS, USA.,Kansas City VA Medical Centre, Kansas City, MO, USA
| | | | - R Scott Rector
- Research Service, Harry S Truman Memorial VA Hospital. .,Department of Medicine-Division of Gastroenterology and Hepatology. .,Department of Nutrition and Exercise Physiology.
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42
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Park YM, Kanaley JA, Padilla J, Zidon T, Welly R, Will MJ, Britton SL, Koch LG, Ruegsegger G, Booth FW, Thyfault JP, Vieira-Potter VJ. Effects Of Intrinsic Aerobic Capacity And Ovariectomy on Voluntary Wheel Running and Mid-brain Dopamine Signaling. Med Sci Sports Exerc 2016. [DOI: 10.1249/01.mss.0000487470.04975.2a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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43
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Linden MA, Sheldon RD, Meers GM, Ortinau LC, Morris EM, Vieira-Potter VJ, Kanaley JA, Booth FW, Sowers JR, Ibdah JA, Thyfault JP, Laughlin MH, Scott Rector R. Exercise Training As A Mitigator Of Liver Fibrosis In Western Diet Fed OLETF Rats. Med Sci Sports Exerc 2016. [DOI: 10.1249/01.mss.0000486456.42848.e4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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44
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Vieira-Potter VJ. Response to "Perivascular adipose tissue and inflammation. Obesity (Silver Spring) 2016; 24:548. [PMID: 26854016 DOI: 10.1002/oby.21450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Accepted: 12/15/2015] [Indexed: 11/12/2022]
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45
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Jurrissen TJ, Sheldon RD, Gastecki ML, Woodford ML, Zidon TM, Rector RS, Vieira-Potter VJ, Padilla J. Ablation of eNOS does not promote adipose tissue inflammation. Am J Physiol Regul Integr Comp Physiol 2016; 310:R744-51. [PMID: 26864812 DOI: 10.1152/ajpregu.00473.2015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Accepted: 02/06/2016] [Indexed: 01/18/2023]
Abstract
Adipose tissue (AT) inflammation is a hallmark characteristic of obesity and an important determinant of insulin resistance and cardiovascular disease; therefore, a better understanding of factors regulating AT inflammation is critical. It is well established that reduced vascular endothelial nitric oxide (NO) bioavailability promotes arterial inflammation; however, the role of NO in modulating inflammation in AT remains disputed. In the present study, 10-wk-old C57BL6 wild-type and endothelial nitric oxide synthase (eNOS) knockout male mice were randomized to either a control diet (10% kcal from fat) or a Western diet (44.9% kcal from fat, 17% sucrose, and 1% cholesterol) for 18 wk (n= 7 or 8/group). In wild-type mice, Western diet-induced obesity led to increased visceral white AT expression of inflammatory genes (e.g., MCP1, TNF-α, and CCL5 mRNAs) and markers of macrophage infiltration (e.g., CD68, ITGAM, EMR1, CD11C mRNAs, and Mac-2 protein), as well as reduced markers of mitochondrial content (e.g., OXPHOS complex I and IV protein). Unexpectedly, these effects of Western diet on visceral white AT were not accompanied by decreases in eNOS phosphorylation at Ser-1177 or increases in eNOS phosphorylation at Thr-495. Also counter to expectations, eNOS knockout mice, independent of the diet, were leaner and did not exhibit greater white or brown AT inflammation compared with wild-type mice. Collectively, these findings do not support the hypothesis that reduced NO production from eNOS contributes to obesity-related AT inflammation.
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Affiliation(s)
- Thomas J Jurrissen
- Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri
| | - Ryan D Sheldon
- Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri; Research Service-Harry S. Truman Memorial Veterans Affairs Medical Center, Columbia, Missouri
| | - Michelle L Gastecki
- Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri
| | - Makenzie L Woodford
- Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri
| | - Terese M Zidon
- Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri
| | - R Scott Rector
- Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri; Research Service-Harry S. Truman Memorial Veterans Affairs Medical Center, Columbia, Missouri; Medicine-Division of Gastroenterology and Hepatology, University of Missouri, Columbia, Missouri
| | | | - Jaume Padilla
- Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri; Dalton Cardiovascular Research Center, University of Missouri, Columbia, Missouri; and Child Health, University of Missouri, Columbia, Missouri
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46
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Park YM, Rector RS, Thyfault JP, Zidon TM, Padilla J, Welly RJ, Meers GM, Morris ME, Britton SL, Koch LG, Booth FW, Kanaley JA, Vieira-Potter VJ. Effects of ovariectomy and intrinsic aerobic capacity on tissue-specific insulin sensitivity. Am J Physiol Endocrinol Metab 2016; 310:E190-9. [PMID: 26646101 PMCID: PMC4888527 DOI: 10.1152/ajpendo.00434.2015] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Accepted: 12/02/2015] [Indexed: 12/16/2022]
Abstract
High-capacity running (HCR) rats are protected against the early (i.e., ∼ 11 wk postsurgery) development of ovariectomy (OVX)-induced insulin resistance (IR) compared with low-capacity running (LCR) rats. The purpose of this study was to utilize the hyperinsulinemic euglycemic clamp to determine whether 1) HCR rats remain protected from OVX-induced IR when the time following OVX is extended to 27 wk and 2) tissue-specific glucose uptake differences are responsible for the protection in HCR rats under sedentary conditions. Female HCR and LCR rats (n = 40; aged ∼ 22 wk) randomly received either OVX or sham (SHM) surgeries and then underwent the clamp 27 wk following surgeries. [3-(3)H]glucose was used to determine glucose clearance, whereas 2-[(14)C]deoxyglucose (2-DG) was used to assess glucose uptake in skeletal muscle, brown adipose tissue (BAT), subcutaneous white adipose tissue (WAT), and visceral WAT. OVX decreased the glucose infusion rate and glucose clearance in both lines, but HCR had better insulin sensitivity than LCR (P < 0.05). In both lines, OVX significantly reduced glucose uptake in soleus and gastrocnemius muscles; however, HCR showed ∼ 40% greater gastrocnemius glucose uptake compared with LCR (P < 0.05). HCR also exhibited greater glucose uptake in BAT and visceral WAT compared with LCR (P < 0.05), yet these tissues were not affected by OVX in either line. In conclusion, OVX impairs insulin sensitivity in both HCR and LCR rats, likely driven by impairments in insulin-mediated skeletal muscle glucose uptake. HCR rats have greater skeletal muscle, BAT, and WAT insulin-mediated glucose uptake, which may aid in protection against OVX-associated insulin resistance.
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Affiliation(s)
- Young-Min Park
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri
| | - R Scott Rector
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri; Medicine Division of Gastroenterology and Hepatology, University of Missouri, Columbia, Missouri; Research Service, Harry S. Truman Memorial Veterans Affairs Hospital, Columbia, Missouri
| | - John P Thyfault
- Department of Molecular Integrative Physiology, University of Kansas Medical Center, Kansas City, Kansas
| | - Terese M Zidon
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri
| | - Jaume Padilla
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri; Department of Child Health, University of Missouri, Columbia, Missouri; Dalton Cardiovascular Research Center, University of Missouri, Columbia, Missouri
| | - Rebecca J Welly
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri
| | - Grace M Meers
- Research Service, Harry S. Truman Memorial Veterans Affairs Hospital, Columbia, Missouri
| | - Matthew E Morris
- Department of Molecular Integrative Physiology, University of Kansas Medical Center, Kansas City, Kansas
| | - Steven L Britton
- Department of Anesthesiology, University of Michigan Medical School, Ann Arbor, Michigan; and
| | - Lauren G Koch
- Department of Anesthesiology, University of Michigan Medical School, Ann Arbor, Michigan; and
| | - Frank W Booth
- Department of Biomedical Sciences, University of Missouri, Columbia, Missouri
| | - Jill A Kanaley
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri
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Abstract
Adipose tissue inflammation links obesity and metabolic disease. Both exercise and estrogen improve metabolic health, enhance mitochondrial function, and have antiinflammatory effects. We hypothesize that there is an inverse relationship between mitochondrial function and inflammation in adipose tissue and that exercise acts as an estrogen "mimetic." Explicitly, exercise may improve adipose tissue "immunometabolism" by improving mitochondrial function and reducing inflammation.
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Affiliation(s)
- Victoria J Vieira-Potter
- 1Departments of Nutrition and Exercise Physiology, and 2Child Health, and 3Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO
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48
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Vieira-Potter VJ, Lee S, Bayless DS, Scroggins RJ, Welly RJ, Fleming NJ, Smith TN, Meers GM, Hill MA, Rector RS, Padilla J. Disconnect between adipose tissue inflammation and cardiometabolic dysfunction in Ossabaw pigs. Obesity (Silver Spring) 2015; 23:2421-9. [PMID: 26524201 PMCID: PMC4701582 DOI: 10.1002/oby.21252] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2015] [Revised: 07/15/2015] [Accepted: 07/16/2015] [Indexed: 02/01/2023]
Abstract
OBJECTIVE The Ossabaw pig is emerging as an attractive model of human cardiometabolic disease because of its size and susceptibility to atherosclerosis, among other characteristics. The relationship between adipose tissue inflammation and metabolic dysfunction in this model was investigated here. METHODS Young female Ossabaw pigs were fed a Western-style high-fat diet (HFD) (n = 4) or control low-fat diet (LFD) (n = 4) for a period of 9 months and compared for cardiometabolic outcomes and adipose tissue inflammation. RESULTS The HFD-fed "OBESE" pigs were 2.5 times heavier (P < 0.001) than LFD-fed "LEAN" pigs and developed severe obesity. HFD feeding caused pronounced dyslipidemia, hypertension, and insulin resistance (systemic and adipose), as well as induction of inflammatory genes, impairments in vasomotor reactivity to insulin, and atherosclerosis in the coronary arteries. Remarkably, visceral, subcutaneous, and perivascular adipose tissue inflammation (via FACS analysis and RT-PCR) was not increased in OBESE pigs, nor were circulating inflammatory cytokines. CONCLUSIONS These findings reveal a disconnect between adipose tissue inflammation and cardiometabolic dysfunction induced by Western diet feeding in the Ossabaw pig model.
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Affiliation(s)
| | - Sewon Lee
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO
- Division of Sport Science & Sport Science Institute, Incheon National University, Incheon, South Korea
| | - David S. Bayless
- Medical Pharmacology and Physiology, University of Missouri, Columbia, MO
| | | | - Rebecca J. Welly
- Nutrition and Exercise Physiology, University of Missouri, Columbia, MO
| | | | - Thomas N. Smith
- Nutrition and Exercise Physiology, University of Missouri, Columbia, MO
| | - Grace M. Meers
- Research Service, Harry S Truman Memorial VA Medical Center, Columbia, MO
| | - Michael A. Hill
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO
- Research Service, Harry S Truman Memorial VA Medical Center, Columbia, MO
| | - R. Scott Rector
- Nutrition and Exercise Physiology, University of Missouri, Columbia, MO
- Research Service, Harry S Truman Memorial VA Medical Center, Columbia, MO
- Medicine-Division of Gastroenterology and Hepatology, University of Missouri, Columbia, MO
| | - Jaume Padilla
- Nutrition and Exercise Physiology, University of Missouri, Columbia, MO
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO
- Child Health, University of Missouri, Columbia, MO
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49
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Liu TW, Heden TD, Matthew Morris E, Fritsche KL, Vieira-Potter VJ, Thyfault JP. High-Fat Diet Alters Serum Fatty Acid Profiles in Obesity Prone Rats: Implications for In Vitro Studies. Lipids 2015; 50:997-1008. [PMID: 26318121 DOI: 10.1007/s11745-015-4061-5] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Accepted: 08/10/2015] [Indexed: 12/27/2022]
Abstract
High-fat diets (HFD) are commonly used in rodents to induce obesity, increase serum fatty acids and induce lipotoxicity in various organs. In vitro studies commonly utilize individual free fatty acids (FFA) to study lipid exposure in an effort to model what is occurring in vivo; however, these approaches are not physiological as tissues are exposed to multiple fatty acids in vivo. Here we characterize circulating lipids in obesity-prone rats fed an HFD in both fasted and fed states with the goal of developing physiologically relevant fatty acid mixtures for subsequent in vitro studies. Rats were fed an HFD (60% kcal fat) or a control diet (10% kcal fat) for 3 weeks; liver tissue and both portal and systemic blood were collected. Fatty acid profiles and absolute concentrations of triglycerides (TAG) and FFA in the serum and TAG, diacylglycerol (DAG) and phospholipids in the liver were measured. Surprisingly, both systemic and portal serum TAG were ~40% lower in HFD-fed compared to controls. Overall, compared to the control diet, HFD feeding consistently induced an increase in the proportion of circulating polyunsaturated fatty acids (PUFA) with a concomitant decline in monounsaturated fatty acids (MUFA) and saturated fatty acids (SFA) in both serum TAG and FFA. The elevations of PUFA were mostly attributed to increases in n-6 PUFA, linoleic acid and arachidonic acid. In conclusion, fatty acid mixtures enriched with linoleic and arachidonic acid in addition to SFA and MUFA should be utilized for in vitro studies attempting to model lipid exposures that occur during in vivo HFD conditions.
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Affiliation(s)
- Tzu-Wen Liu
- Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, 65211, USA. .,Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.
| | - Timothy D Heden
- Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, 65211, USA. .,Department of Kinesiology, East Carolina University, Greenville, NC, 27843, USA.
| | - E Matthew Morris
- Molecular and Integrative Physiology, University of Kansas Medical Center, 2067 Hemenway Life Sciences and Innovation Center, MS: 3043, 3901 Rainbow Blvd, Kansas, KS, 66160, USA.
| | - Kevin L Fritsche
- Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, 65211, USA. .,Animal Sciences, University of Missouri, Columbia, MO, 65211, USA.
| | | | - John P Thyfault
- Molecular and Integrative Physiology, University of Kansas Medical Center, 2067 Hemenway Life Sciences and Innovation Center, MS: 3043, 3901 Rainbow Blvd, Kansas, KS, 66160, USA. .,Research Service, Kansas City VA Medical Center, Kansas, MO, 64128, USA.
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50
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Liu TW, Park YM, Holscher HD, Padilla J, Scroggins RJ, Welly R, Britton SL, Koch LG, Vieira-Potter VJ, Swanson KS. Physical Activity Differentially Affects the Cecal Microbiota of Ovariectomized Female Rats Selectively Bred for High and Low Aerobic Capacity. PLoS One 2015; 10:e0136150. [PMID: 26301712 PMCID: PMC4547806 DOI: 10.1371/journal.pone.0136150] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Accepted: 07/17/2015] [Indexed: 01/15/2023] Open
Abstract
The gut microbiota is considered a relevant factor in obesity and associated metabolic diseases, for which postmenopausal women are particularly at risk. Increasing physical activity has been recognized as an efficacious approach to prevent or treat obesity, yet the impact of physical activity on the microbiota remains under-investigated. We examined the impacts of voluntary exercise on host metabolism and gut microbiota in ovariectomized (OVX) high capacity (HCR) and low capacity running (LCR) rats. HCR and LCR rats (age = 27wk) were OVX and fed a high-fat diet (45% kcal fat) ad libitum and housed in cages equipped with (exercise, EX) or without (sedentary, SED) running wheels for 11wk (n = 7-8/group). We hypothesized that increased physical activity would hinder weight gain, increase metabolic health and shift the microbiota of LCR rats, resulting in populations more similar to that of HCR rats. Animals were compared for characteristic metabolic parameters including body composition, lipid profile and energy expenditure; whereas cecal digesta were collected for DNA extraction. 16S rRNA gene-based amplicon Illumina MiSeq sequencing was performed, followed by analysis using QIIME 1.8.0 to assess cecal microbiota. Voluntary exercise decreased body and fat mass, and normalized fasting NEFA concentrations of LCR rats, despite only running one-third the distance of HCR rats. Exercise, however, increased food intake, weight gain and fat mass of HCR rats. Exercise clustered the gut microbial community of LCR rats, which separated them from the other groups. Assessments of specific taxa revealed significant (p<0.05) line by exercise interactions including shifts in the abundances of Firmicutes, Proteobacteria, and Cyanobacteria. Relative abundance of Christensenellaceae family was higher (p = 0.026) in HCR than LCR rats, and positively correlated (p<0.05) with food intake, body weight and running distance. These findings demonstrate that exercise differentially impacts host metabolism and gut microbial communities of female HCR and LCR rats without ovarian function.
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Affiliation(s)
- Tzu-Wen Liu
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America
| | - Young-Min Park
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri, United States of America
| | - Hannah D. Holscher
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America
| | - Jaume Padilla
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri, United States of America
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, Missouri, United States of America
- Department of Child Health, University of Missouri, Columbia, Missouri, United States of America
| | - Rebecca J. Scroggins
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri, United States of America
| | - Rebecca Welly
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri, United States of America
| | - Steven L. Britton
- Department of Anesthesiology, University of Michigan, Ann Arbor, Michigan, United States of America
- Department of Molecular & Integrative Physiology, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Lauren G. Koch
- Department of Anesthesiology, University of Michigan, Ann Arbor, Michigan, United States of America
- Department of Molecular & Integrative Physiology, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Victoria J. Vieira-Potter
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri, United States of America
| | - Kelly S. Swanson
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America
- * E-mail:
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