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Ahmad I, Gupta S, Faulkner P, Mullens D, Thomas M, Sytha SP, Ivanov I, Cai JJ, Heaps CL, Newell-Fugate AE. Single-nucleus transcriptomics of epicardial adipose tissue from female pigs reveals effects of exercise training on resident innate and adaptive immune cells. Cell Commun Signal 2024; 22:243. [PMID: 38671495 PMCID: PMC11046969 DOI: 10.1186/s12964-024-01587-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 03/23/2024] [Indexed: 04/28/2024] Open
Abstract
BACKGROUND Coronary artery disease (CAD) is a leading cause of death in women. Epicardial adipose tissue (EAT) secretes cytokines to modulate coronary artery function, and the release of fatty acids from EAT serves as a readily available energy source for cardiomyocytes. However, despite having beneficial functions, excessive amounts of EAT can cause the secretion of proinflammatory molecules that increase the instability of atherosclerotic plaques and contribute to CAD progression. Although exercise mitigates CAD, the mechanisms by which exercise impacts EAT are unknown. The Yucatan pig is an excellent translational model for the effects of exercise on cardiac function. Therefore, we sought to determine if chronic aerobic exercise promotes an anti-inflammatory microenvironment in EAT from female Yucatan pigs. METHODS Sexually mature, female Yucatan pigs (n = 7 total) were assigned to sedentary (Sed, n = 3) or exercise (Ex, n = 4) treatments, and coronary arteries were occluded (O) with an ameroid to mimic CAD or remained non-occluded (N). EAT was collected for bulk (n = 7 total) and single nucleus transcriptomic sequencing (n = 2 total, 1 per exercise treatment). RESULTS Based on the bulk transcriptomic analysis, exercise upregulated S100 family, G-protein coupled receptor, and CREB signaling in neurons canonical pathways in EAT. The top networks in EAT affected by exercise as measured by bulk RNA sequencing were SRC kinase family, fibroblast growth factor receptor, Jak-Stat, and vascular endothelial growth factor. Single nucleus transcriptomic analysis revealed that exercise increased the interaction between immune, endothelial, and mesenchymal cells in the insulin-like growth factor pathway and between endothelial and other cell types in the platelet endothelial cell adhesion molecule 1 pathway. Sub-clustering revealed nine cell types in EAT, with fibroblast and macrophage populations predominant in O-Ex EAT and T cell populations predominant in N-Ex EAT. Unlike the findings for exercise alone as a treatment, there were not increased interactions between endothelial and mesenchymal cells in O-Ex EAT. Coronary artery occlusion impacted the most genes in T cells and endothelial cells. Genes related to fatty acid metabolism were the most highly upregulated in non-immune cells from O-Ex EAT. Sub-clustering of endothelial cells revealed that N-Ex EAT separated from other treatments. CONCLUSIONS According to bulk transcriptomics, exercise upregulated pathways and networks related to growth factors and immune cell communication. Based on single nucleus transcriptomics, aerobic exercise increased cell-to-cell interaction amongst immune, mesenchymal, and endothelial cells in female EAT. Yet, exercise was minimally effective at reversing alterations in gene expression in endothelial and mesenchymal cells in EAT surrounding occluded arteries. These findings lay the foundation for future work focused on the impact of exercise on cell types in EAT.
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Affiliation(s)
- Irshad Ahmad
- Department of Veterinary Physiology and Pharmacology, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - Shreyan Gupta
- Department of Veterinary Integrative Biosciences, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - Patricia Faulkner
- Department of Veterinary Physiology and Pharmacology, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - Destiny Mullens
- Department of Veterinary Physiology and Pharmacology, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - Micah Thomas
- Department of Veterinary Physiology and Pharmacology, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - Sharanee P Sytha
- Department of Veterinary Physiology and Pharmacology, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - Ivan Ivanov
- Department of Veterinary Physiology and Pharmacology, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - James J Cai
- Department of Veterinary Integrative Biosciences, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - Cristine L Heaps
- Department of Veterinary Physiology and Pharmacology, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - Annie E Newell-Fugate
- Department of Veterinary Physiology and Pharmacology, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA.
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Baroi S, Czernik PJ, Khan MP, Letson J, Crowe E, Chougule A, Griffin PR, Rosen CJ, Lecka-Czernik B. PPARG in osteocytes controls cell bioenergetics and systemic energy metabolism independently of sclerostin levels in circulation. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.04.04.588029. [PMID: 38645043 PMCID: PMC11030235 DOI: 10.1101/2024.04.04.588029] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/23/2024]
Abstract
Objective The skeleton is one of the largest organs in the body, wherein metabolism is integrated with systemic energy metabolism. However, the bioenergetic programming of osteocytes, the most abundant bone cells coordinating bone metabolism, is not well defined. Here, using a mouse model with partial penetration of an osteocyte-specific PPARG deletion, we demonstrate that PPARG controls osteocyte bioenergetics and their contribution to systemic energy metabolism independently of circulating sclerostin levels. Methods In vivo and in vitro models of osteocyte-specific PPARG deletion, i.e. Dmp 1 Cre Pparγ flfl male and female mice (γOT KO ) and MLO-Y4 osteocyte-like cells with either siRNA-silenced or CRISPR/Cas9-edited Pparγ . As applicable, the models were analyzed for levels of energy metabolism, glucose metabolism, and metabolic profile of extramedullary adipose tissue, as well as the osteocyte transcriptome, mitochondrial function, bioenergetics, insulin signaling, and oxidative stress. Results Circulating sclerostin levels of γOT KO male and female mice were not different from control mice. Male γOT KO mice exhibited a high energy phenotype characterized by increased respiration, heat production, locomotion and food intake. This high energy phenotype in males did not correlate with "beiging" of peripheral adipose depots. However, both sexes showed a trend for reduced fat mass and apparent insulin resistance without changes in glucose tolerance, which correlated with decreased osteocytic responsiveness to insulin measured by AKT activation. The transcriptome of osteocytes isolated from γOT KO males suggested profound changes in cellular metabolism, fuel transport and usage, mitochondria dysfunction, insulin signaling and increased oxidative stress. In MLO-Y4 osteocytes, PPARG deficiency correlated with highly active mitochondria, increased ATP production, shifts in fuel utilization, and accumulation of reactive oxygen species (ROS). Conclusions PPARG in male osteocytes acts as a molecular break on mitochondrial function, and protection against oxidative stress and ROS accumulation. It also regulates osteocyte insulin signaling and fuel usage to produce energy. These data provide insight into the connection between osteocyte bioenergetics and their sex-specific contribution to the balance of systemic energy metabolism. These findings support the concept that the skeleton controls systemic energy expenditure via osteocyte metabolism. Highlights Osteocytes function as a body energostat via their bioenergeticsPPARG protein acts as a "molecular break" of osteocyte mitochondrial activityPPARG deficiency activates TCA cycle, oxidative stress and ROS accumulationPPARG controls osteocyte insulin signaling and fuel utilization.
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Subramanian N, Wiik A, Rullman E, Melin M, Lundberg TR, Flanagan J, Holmberg M, Dekanski A, Dhejne C, Arver S, Gustafsson T, Laurencikiene J, Andersson DP. Adipokine secretion and lipolysis following gender-affirming treatment in transgender individuals. J Endocrinol Invest 2024:10.1007/s40618-024-02323-4. [PMID: 38460092 DOI: 10.1007/s40618-024-02323-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 01/28/2024] [Indexed: 03/11/2024]
Abstract
BACKGROUND The organ-specific effects of gender-affirming sex hormone treatment (GAHT) in transgender women (TW) and transgender men (TM) are insufficiently explored. This study investigated the effects of GAHT on adipose tissue function. METHODS In a single-center interventional prospective study, 32 adults undergoing GAHT, 15 TW and 17 TM, were examined with anthropometry and abdominal subcutaneous adipose tissue biopsies obtained before initiation of treatment, 1 month after endogenous sex hormone inhibition and three and 11 months after initiated GAHT. Fat cell size, basal/stimulated lipolysis and cytokine secretion in adipose tissue were analyzed. RESULTS TW displayed an increase in complement component 3a and retinol-binding protein 4 (RBP4) secretion after sex hormone inhibition, which returned to baseline following estradiol treatment. No changes in lipolysis were seen in TW. TM showed downregulation of RBP4 after treatment, but no changes in basal lipolysis. In TM, the estrogen suppression led to higher noradrenaline stimulated (NA) lipolysis that was normalized following testosterone treatment. At 11 months, the ratio of NA/basal lipolysis was lower compared to baseline. There were no significant changes in fat cell size in either TW or TM. CONCLUSION In TW, gonadal hormone suppression results in transient changes in cytokines and in TM there are some changes in NA-stimulated lipolysis following testosterone treatment. However, despite the known metabolic effects of sex hormones, the overall effects of GAHT on adipose tissue function are small and likely have limited clinical relevance, but larger studies with longer follow-up are needed to confirm these findings. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT02518009, Retrospectively registered 7 August 2015.
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Affiliation(s)
- N Subramanian
- Lipid Laboratory, Department of Medicine Huddinge (H7), Karolinska Institutet, C2:94, Karolinska University Hospital Huddinge, 141 86, Huddinge, Sweden
| | - A Wiik
- Department of Laboratory Medicine, Division of Clinical Physiology, Karolinska Institutet, and Unit of Clinical Physiology, Karolinska University Hospital, Stockholm, Sweden
| | - E Rullman
- Department of Laboratory Medicine, Division of Clinical Physiology, Karolinska Institutet, and Unit of Clinical Physiology, Karolinska University Hospital, Stockholm, Sweden
| | - M Melin
- Department of Laboratory Medicine, Division of Clinical Physiology, Karolinska Institutet, and Unit of Clinical Physiology, Karolinska University Hospital, Stockholm, Sweden
- Department of Cardiology, Heart and Vascular Center, Karolinska University Hospital, Stockholm, Sweden
| | - T R Lundberg
- Department of Laboratory Medicine, Division of Clinical Physiology, Karolinska Institutet, and Unit of Clinical Physiology, Karolinska University Hospital, Stockholm, Sweden
| | - J Flanagan
- Department of Laboratory Medicine, Division of Clinical Physiology, Karolinska Institutet, and Unit of Clinical Physiology, Karolinska University Hospital, Stockholm, Sweden
| | - M Holmberg
- Lipid Laboratory, Department of Medicine Huddinge (H7), Karolinska Institutet, C2:94, Karolinska University Hospital Huddinge, 141 86, Huddinge, Sweden
- ANOVA, Andrology, Sexual Medicine and Transgender Medicine, Karolinska University Hospital, Stockholm, Sweden
| | - A Dekanski
- Lipid Laboratory, Department of Medicine Huddinge (H7), Karolinska Institutet, C2:94, Karolinska University Hospital Huddinge, 141 86, Huddinge, Sweden
| | - C Dhejne
- ANOVA, Andrology, Sexual Medicine and Transgender Medicine, Karolinska University Hospital, Stockholm, Sweden
- Department of Medicine Huddinge, Karolinska Institutet, Stockholm, Sweden
| | - S Arver
- ANOVA, Andrology, Sexual Medicine and Transgender Medicine, Karolinska University Hospital, Stockholm, Sweden
| | - T Gustafsson
- Department of Laboratory Medicine, Division of Clinical Physiology, Karolinska Institutet, and Unit of Clinical Physiology, Karolinska University Hospital, Stockholm, Sweden
| | - J Laurencikiene
- Lipid Laboratory, Department of Medicine Huddinge (H7), Karolinska Institutet, C2:94, Karolinska University Hospital Huddinge, 141 86, Huddinge, Sweden
| | - D P Andersson
- Lipid Laboratory, Department of Medicine Huddinge (H7), Karolinska Institutet, C2:94, Karolinska University Hospital Huddinge, 141 86, Huddinge, Sweden.
- Department of Endocrinology, Karolinska University Hospital Huddinge, Stockholm, Sweden.
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Mallick R, Basak S, Das RK, Banerjee A, Paul S, Pathak S, Duttaroy AK. Fatty Acids and their Proteins in Adipose Tissue Inflammation. Cell Biochem Biophys 2024; 82:35-51. [PMID: 37794302 PMCID: PMC10867084 DOI: 10.1007/s12013-023-01185-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/20/2023] [Indexed: 10/06/2023]
Abstract
Chronic low-grade adipose tissue inflammation is associated with metabolic disorders. Inflammation results from the intertwined cross-talks of pro-inflammatory and anti-inflammatory pathways in the immune response of adipose tissue. In addition, adipose FABP4 levels and lipid droplet proteins are involved in systemic and tissue inflammation. Dysregulated adipocytes help infiltrate immune cells derived from bone marrow responsible for producing cytokines and chemokines. When adipose tissue expands in excess, adipocyte exhibits increased secretion of adipokines and is implicated in metabolic disturbances due to the release of free fatty acids. This review presents an emerging concept in adipose tissue fat metabolism, fatty acid handling and binding proteins, and lipid droplet proteins and their involvement in inflammatory disorders.
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Affiliation(s)
- Rahul Mallick
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Sanjay Basak
- Molecular Biology Division, ICMR-National Institute of Nutrition, Indian Council of Medical Research, Hyderabad, India
| | - Ranjit K Das
- Department of Health and Biomedical Sciences, University of Texas Rio Grande Valley, Brownsville, TX, USA
| | - Antara Banerjee
- Chettinad Academy of Research and Education (CARE), Chettinad Hospital and Research Institute (CHRI), Department of Medical Biotechnology, Faculty of Allied Health Sciences, Chennai, India
| | - Sujay Paul
- Tecnologico de Monterrey, School of Engineering and Sciences, Campus Queretaro, Av. Epigmenio Gonzalez, No. 500 Fracc, San Pablo, Queretaro, 76130, Mexico
| | - Surajit Pathak
- Chettinad Academy of Research and Education (CARE), Chettinad Hospital and Research Institute (CHRI), Department of Medical Biotechnology, Faculty of Allied Health Sciences, Chennai, India
| | - Asim K Duttaroy
- Department of Nutrition, Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, POB 1046 Blindern, Oslo, Norway.
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Halasz L, Divoux A, Sandor K, Erdos E, Daniel B, Smith SR, Osborne TF. An Atlas of Promoter Chromatin Modifications and HiChIP Regulatory Interactions in Human Subcutaneous Adipose-Derived Stem Cells. Int J Mol Sci 2023; 25:437. [PMID: 38203607 PMCID: PMC10778978 DOI: 10.3390/ijms25010437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 12/19/2023] [Accepted: 12/21/2023] [Indexed: 01/12/2024] Open
Abstract
The genome of human adipose-derived stem cells (ADSCs) from abdominal and gluteofemoral adipose tissue depots are maintained in depot-specific stable epigenetic conformations that influence cell-autonomous gene expression patterns and drive unique depot-specific functions. The traditional approach to explore tissue-specific transcriptional regulation has been to correlate differential gene expression to the nearest-neighbor linear-distance regulatory region defined by associated chromatin features including open chromatin status, histone modifications, and DNA methylation. This has provided important information; nonetheless, the approach is limited because of the known organization of eukaryotic chromatin into a topologically constrained three-dimensional network. This network positions distal regulatory elements in spatial proximity with gene promoters which are not predictable based on linear genomic distance. In this work, we capture long-range chromatin interactions using HiChIP to identify remote genomic regions that influence the differential regulation of depot-specific genes in ADSCs isolated from different adipose depots. By integrating these data with RNA-seq results and histone modifications identified by ChIP-seq, we uncovered distal regulatory elements that influence depot-specific gene expression in ADSCs. Interestingly, a subset of the HiChIP-defined chromatin loops also provide previously unknown connections between waist-to-hip ratio GWAS variants with genes that are known to significantly influence ADSC differentiation and adipocyte function.
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Affiliation(s)
- Laszlo Halasz
- Division of Diabetes Endocrinology and Metabolism, Departments of Medicine, Biological Chemistry and Pediatrics, Johns Hopkins University School of Medicine, Institute for Fundamental Biomedical Research, Johns Hopkins All Children’s Hospital, St. Petersburg, FL 33701, USA (T.F.O.)
| | - Adeline Divoux
- Translational Research Institute, AdventHealth, Orlando, FL 32804, USA;
| | - Katalin Sandor
- Division of Diabetes Endocrinology and Metabolism, Departments of Medicine, Biological Chemistry and Pediatrics, Johns Hopkins University School of Medicine, Institute for Fundamental Biomedical Research, Johns Hopkins All Children’s Hospital, St. Petersburg, FL 33701, USA (T.F.O.)
| | - Edina Erdos
- Division of Diabetes Endocrinology and Metabolism, Departments of Medicine, Biological Chemistry and Pediatrics, Johns Hopkins University School of Medicine, Institute for Fundamental Biomedical Research, Johns Hopkins All Children’s Hospital, St. Petersburg, FL 33701, USA (T.F.O.)
| | - Bence Daniel
- Division of Diabetes Endocrinology and Metabolism, Departments of Medicine, Biological Chemistry and Pediatrics, Johns Hopkins University School of Medicine, Institute for Fundamental Biomedical Research, Johns Hopkins All Children’s Hospital, St. Petersburg, FL 33701, USA (T.F.O.)
| | - Steven R. Smith
- Translational Research Institute, AdventHealth, Orlando, FL 32804, USA;
| | - Timothy F. Osborne
- Division of Diabetes Endocrinology and Metabolism, Departments of Medicine, Biological Chemistry and Pediatrics, Johns Hopkins University School of Medicine, Institute for Fundamental Biomedical Research, Johns Hopkins All Children’s Hospital, St. Petersburg, FL 33701, USA (T.F.O.)
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Mitsuno R, Kaneko K, Nakamura T, Kojima D, Mizutani Y, Azegami T, Yamaguchi S, Yamada Y, Jinzaki M, Kinouchi K, Yoshino J, Hayashi K. Association Between Renal Sinus Fat and Cardiometabolic and Renin-Angiotensin System Parameters in Primary Aldosteronism. J Endocr Soc 2023; 8:bvad154. [PMID: 38116128 PMCID: PMC10729860 DOI: 10.1210/jendso/bvad154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Indexed: 12/21/2023] Open
Abstract
Context Renal sinus fat (RSF) accumulation is associated with cardiometabolic diseases, such as obesity, diabetes, hypertension, and chronic kidney disease. However, clinical implications of RSF in primary aldosteronism (PA) remain unclear. Objective We aimed to investigate relationships between RSF volume and key cardiometabolic and renin-angiotensin system (RAS) parameters in PA patients and clarify the differences in these relationships between unilateral and bilateral subtypes. Methods We analyzed data obtained from well-characterized PA patients that involved 45 unilateral (median age: 52 years; 42.2% men) and 92 bilateral patients (51 years; 42.4% men). Results RSF volume normalized by renal volume (RSF%) was greater in the unilateral group than in the bilateral group (P < .05). RSF% was greater in men than in women (P < .05). RSF% positively correlated with parameters related to cardiometabolic risk, including age, body mass index, visceral fat volume, creatinine, triglycerides/high-density lipoprotein cholesterol ratio, uric acid, fasting glucose, and C-reactive protein regardless of PA subtypes (all P < .05). Intriguingly, RSF% positively correlated with plasma aldosterone concentration (PAC), aldosterone-to-renin ratio, and intact parathyroid hormone (iPTH) (all P < .05) in bilateral patients but did not correlate with RAS parameters and even showed an opposite trend in unilateral patients. In subgroup analyses by sex, these distinctions became more evident in women. After adjustment for potential confounders, RSF% remained positively correlated with PAC and iPTH in bilateral patients. Conclusion Our results indicate that RSF accumulation is involved in cardiometabolic dysfunction associated with PA. However, there were distinct correlations between RSF volume and RAS parameters according to sex and PA subtypes.
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Affiliation(s)
- Ryunosuke Mitsuno
- Division of Endocrinology, Metabolism and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Kenji Kaneko
- Division of Endocrinology, Metabolism and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Toshifumi Nakamura
- Division of Endocrinology, Metabolism and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Daiki Kojima
- Division of Endocrinology, Metabolism and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Yosuke Mizutani
- Division of Endocrinology, Metabolism and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Tatsuhiko Azegami
- Division of Endocrinology, Metabolism and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Shintaro Yamaguchi
- Division of Endocrinology, Metabolism and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Yoshitake Yamada
- Department of Radiology, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Masahiro Jinzaki
- Department of Radiology, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Kenichiro Kinouchi
- Division of Endocrinology, Metabolism and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Jun Yoshino
- Division of Endocrinology, Metabolism and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Kaori Hayashi
- Division of Endocrinology, Metabolism and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan
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Sandahl KJ, Just J, Erlandsen M, Mortensen KH, Andersen NH, Gravholt CH. A Prospective Study of Lipids in Adult Women With Turner Syndrome. J Endocr Soc 2023; 7:bvad124. [PMID: 37822574 PMCID: PMC10563659 DOI: 10.1210/jendso/bvad124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Indexed: 10/13/2023] Open
Abstract
Context Turner syndrome (TS) is a rare genetic syndrome with an increased mortality, mainly attributed to cardiovascular disease. Objective This work aimed to investigate and correlate the lipid profile in adult women with TS to clinical characteristics. Methods A 12-year prospective cohort study, including 4 study visits, was conducted at a specialist hospital. A total of 102 women with TS qualified for inclusion. Excluding missing variables and participants lost to follow-up, 86 women (mean age 38.1 years; range, 18.4-62.1 years) were included in this study. Fifty-three women completed the study. Repeated-measurement analysis was performed, using total cholesterol (Total-C), low-density lipoprotein (LDL), triglycerides (TGs), and high-density lipoprotein (HDL) as outcome variables and age, karyotype, body mass index (BMI), treatment with statins, antidiabetics, and hormone replacement therapy as explanatory variables. Principal component analysis (PCA) and partial least squares (PLS) analysis were performed at the first study visit. Results Hyperlipidemia was present in 30% of the TS cohort. Total-C increased with age (0.12 mmol/L/y; P = .016). LDL (P = .08), TGs (P = .14), and HDL (P = .24) were not associated with age. BMI significantly increased total-C (0.19 mmol/L/kg/m2; P = .006), LDL (0.63 mmol/L/kg/m2; P < .001), and TGs (0.80 mmol/L/kg/m2; P < .001) and decreased HDL (-0.59 mmol/L/kg/m2; P < .001). PCA and PLS analysis found correlations between weight and BMI and total-C, LDL, and TGs. Conclusion Hyperlipidemia is more prevalent in adult women with TS across adulthood compared to the background population. Total-C, LDL, TGs, and HDL were significantly associated with BMI characterizing the atherogenic profile in adult women with TS.
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Affiliation(s)
- Kristian Juul Sandahl
- Department of Endocrinology, Aarhus University Hospital, Aarhus N 8200, Denmark
- Department of Clinical Medicine, Aarhus University, Aarhus N 8200, Denmark
| | - Jesper Just
- Department of Clinical Medicine, Aarhus University, Aarhus N 8200, Denmark
- Department of Molecular Medicine, Aarhus University Hospital, Aarhus N 8200, Denmark
| | - Mogens Erlandsen
- Department of Clinical Medicine, Aarhus University, Aarhus N 8200, Denmark
| | | | | | - Claus Højbjerg Gravholt
- Department of Endocrinology, Aarhus University Hospital, Aarhus N 8200, Denmark
- Department of Clinical Medicine, Aarhus University, Aarhus N 8200, Denmark
- Department of Molecular Medicine, Aarhus University Hospital, Aarhus N 8200, Denmark
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Al-Samerria S, Radovick S. Exploring the Therapeutic Potential of Targeting GH and IGF-1 in the Management of Obesity: Insights from the Interplay between These Hormones and Metabolism. Int J Mol Sci 2023; 24:ijms24119556. [PMID: 37298507 DOI: 10.3390/ijms24119556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 05/23/2023] [Accepted: 05/29/2023] [Indexed: 06/12/2023] Open
Abstract
Obesity is a growing public health problem worldwide, and GH and IGF-1 have been studied as potential therapeutic targets for managing this condition. This review article aims to provide a comprehensive view of the interplay between GH and IGF-1 and metabolism within the context of obesity. We conducted a systematic review of the literature that was published from 1993 to 2023, using MEDLINE, Embase, and Cochrane databases. We included studies that investigated the effects of GH and IGF-1 on adipose tissue metabolism, energy balance, and weight regulation in humans and animals. Our review highlights the physiological functions of GH and IGF-1 in adipose tissue metabolism, including lipolysis and adipogenesis. We also discuss the potential mechanisms underlying the effects of these hormones on energy balance, such as their influence on insulin sensitivity and appetite regulation. Additionally, we summarize the current evidence regarding the efficacy and safety of GH and IGF-1 as therapeutic targets for managing obesity, including in pharmacological interventions and hormone replacement therapy. Finally, we address the challenges and limitations of targeting GH and IGF-1 in obesity management.
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Affiliation(s)
- Sarmed Al-Samerria
- Laboratory of Human Growth and Reproductive Development, Department of Pediatrics, Robert Wood Johnson Medical School, Rutgers, The State University of New Jersey, New Brunswick, NJ 08901, USA
| | - Sally Radovick
- Laboratory of Human Growth and Reproductive Development, Department of Pediatrics, Robert Wood Johnson Medical School, Rutgers, The State University of New Jersey, New Brunswick, NJ 08901, USA
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Xu X, Zhao L, Terry PD, Chen J. Reciprocal Effect of Environmental Stimuli to Regulate the Adipogenesis and Osteogenesis Fate Decision in Bone Marrow-Derived Mesenchymal Stem Cells (BM-MSCs). Cells 2023; 12:1400. [PMID: 37408234 PMCID: PMC10216952 DOI: 10.3390/cells12101400] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 05/02/2023] [Accepted: 05/12/2023] [Indexed: 07/07/2023] Open
Abstract
Mesenchymal stem cells derived from bone marrow (BM-MSCs) can differentiate into adipocytes and osteoblasts. Various external stimuli, including environmental contaminants, heavy metals, dietary, and physical factors, are shown to influence the fate decision of BM-MSCs toward adipogenesis or osteogenesis. The balance of osteogenesis and adipogenesis is critical for the maintenance of bone homeostasis, and the interruption of BM-MSCs lineage commitment is associated with human health issues, such as fracture, osteoporosis, osteopenia, and osteonecrosis. This review focuses on how external stimuli shift the fate of BM-MSCs towards adipogenesis or osteogenesis. Future studies are needed to understand the impact of these external stimuli on bone health and elucidate the underlying mechanisms of BM-MSCs differentiation. This knowledge will inform efforts to prevent bone-related diseases and develop therapeutic approaches to treat bone disorders associated with various pathological conditions.
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Affiliation(s)
- Xinyun Xu
- Department of Nutrition, The University of Tennessee, Knoxville, TN 37996, USA
| | - Ling Zhao
- Department of Nutrition, The University of Tennessee, Knoxville, TN 37996, USA
| | - Paul D. Terry
- Department of Medicine, Graduate School of Medicine, The University of Tennessee, Knoxville, TN 37920, USA;
| | - Jiangang Chen
- Department of Public Health, The University of Tennessee, Knoxville, TN 37996, USA
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Kung CP, Skiba MB, Crosby EJ, Gorzelitz J, Kennedy MA, Kerr BA, Li YR, Nash S, Potiaumpai M, Kleckner AS, James DL, Coleman MF, Fairman CM, Galván GC, Garcia DO, Gordon MJ, His M, Hornbuckle LM, Kim SY, Kim TH, Kumar A, Mahé M, McDonnell KK, Moore J, Oh S, Sun X, Irwin ML. Key takeaways for knowledge expansion of early-career scientists conducting Transdisciplinary Research in Energetics and Cancer (TREC): a report from the TREC Training Workshop 2022. J Natl Cancer Inst Monogr 2023; 2023:149-157. [PMID: 37139978 PMCID: PMC10157760 DOI: 10.1093/jncimonographs/lgad005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 01/25/2023] [Accepted: 01/31/2023] [Indexed: 05/05/2023] Open
Abstract
The overall goal of the annual Transdisciplinary Research in Energetics and Cancer (TREC) Training Workshop is to provide transdisciplinary training for scientists in energetics and cancer and clinical care. The 2022 Workshop included 27 early-to-mid career investigators (trainees) pursuing diverse TREC research areas in basic, clinical, and population sciences. The 2022 trainees participated in a gallery walk, an interactive qualitative program evaluation method, to summarize key takeaways related to program objectives. Writing groups were formed and collaborated on this summary of the 5 key takeaways from the TREC Workshop. The 2022 TREC Workshop provided a targeted and unique networking opportunity that facilitated meaningful collaborative work addressing research and clinical needs in energetics and cancer. This report summarizes the 2022 TREC Workshop's key takeaways and future directions for innovative transdisciplinary energetics and cancer research.
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Affiliation(s)
- Che-Pei Kung
- Division of Molecular Oncology, Department of Medicine, Washington University in St. Louis, St. Louis, MO, USA
| | - Meghan B Skiba
- Division of Biobehavioral Health Science, College of Nursing, University of Arizona, Tucson, AZ, USA
| | | | - Jessica Gorzelitz
- Department of Health and Human Physiology, University of Iowa, Iowa City, IA, USA
| | - Mary A Kennedy
- Nutrition and Health Innovation Research Institute, School of Medical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia
| | - Bethany A Kerr
- Department of Cancer Biology, Wake Forest University School of Medicine, Winston Salem, NC, USA
- Wake Forest Baptist Comprehensive Cancer Center, Winston Salem, NC, USA
| | - Yun Rose Li
- Departments of Radiation Oncology and Cancer Genetics and Epigenetics, City of Hope Comprehensive Cancer Center, Duarte, CA, USA
- Division of Quantitative Medicine and Systems Biology, Translational Genomics Research Institute, Phoenix, AZ, USA
| | - Sarah Nash
- Department of Epidemiology, College of Public Health, University of Iowa, Iowa City, IA, USA
| | - Melanie Potiaumpai
- Milton S. Hershey College of Medicine, Public Health Sciences, Pennsylvania State University, Hershey, PA, USA
| | - Amber S Kleckner
- Department of Pain and Translational Symptom Science, School of Nursing, University of Maryland, Baltimore, MD, USA
- University of Maryland Greenebaum Comprehensive Cancer Center, Baltimore, MD, USA
| | - Dara L James
- Community Mental Health Nursing Department, College of Nursing, University of South Alabama, Mobile, AL, USA
- Edson College of Nursing and Health Innovation, Arizona State University, Phoenix, AZ, USA
| | - Michael F Coleman
- Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Ciaran M Fairman
- Exercise Science Department, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA
| | - Gloria C Galván
- Department of Surgery, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - David O Garcia
- Department of Health Promotion Sciences, Mel and Enid Zuckerman College of Public Health, University of Arizona, Tucson, AZ, USA
| | - Max J Gordon
- Department of Cancer Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Mathilde His
- International Agency for Research on Cancer (IARC/WHO), Nutrition and Metabolism Branch, Lyon, France
| | - Lyndsey M Hornbuckle
- Department of Kinesiology, Recreation, and Sport Studies, University of Tennessee, Knoxville, TN, USA
| | - So-Youn Kim
- Olson Center for Women’s Health, Department of Obstetrics and Gynecology, Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, USA
| | - Tae-Hyung Kim
- Department of Pathology, School of Medicine, University of New Mexico, Albuquerque, NM, USA
- University of New Mexico Comprehensive Cancer Center, Albuquerque, NM, USA
| | - Amanika Kumar
- Department of Obstetrics and Gynecology and Oncology, Mayo Clinic, Rochester, MN, USA
| | - Mélanie Mahé
- Department of Microbiology, New York University Grossman School of Medicine, New York, NY, USA
| | - Karen K McDonnell
- Cancer Survivorship Research Center, College of Nursing, University of South Carolina, Columbia, SC, USA
| | - Jade Moore
- Department of Radiation Oncology, University of California, San Francisco, San Francisco, CA, USA
| | - Sangphil Oh
- Department of Cell Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
- Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Xinghui Sun
- Department of Biochemistry, University of Nebraska—Lincoln, Lincoln, NE, USA
| | - Melinda L Irwin
- Department of Chronic Disease Epidemiology, Yale University School of Public Health, New Haven, CT, USA
- Yale Cancer Center, New Haven, CT, USA
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11
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Batalha IM, Maylem ERS, Spicer LJ, Pena Bello CA, Archilia EC, Schütz LF. Effects of asprosin on estradiol and progesterone secretion and proliferation of bovine granulosa cells. Mol Cell Endocrinol 2023; 565:111890. [PMID: 36822263 DOI: 10.1016/j.mce.2023.111890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 01/28/2023] [Accepted: 02/15/2023] [Indexed: 02/25/2023]
Abstract
Asprosin is an adipokine synthesized by the white adipose tissue that regulates glucose homeostasis and that has been reported to affect bovine theca cell function and follicular growth, but its role on granulosa cell functions remains to be unveiled. Hence, the objective of this study was to investigate asprosin impacts on granulosa cell steroidogenesis. Bovine granulosa cells from small ovarian follicles were cultured in vitro to investigate the effects of asprosin on cell proliferation, production of steroids, mRNA abundance of genes that encode steroidogenic enzymes and cell cycle regulators, and protein relative abundance of steroidogenic signaling pathways. Asprosin was shown to affect granulosa cell functions in a dose-dependent manner. In the presence of FSH, asprosin enhanced estradiol production and stimulated an increase in mRNA expression of FSHR and CYP19A1 in a dose-dependent manner. In the presence of IGF1, asprosin decreased estradiol production, increased progesterone production, altered PKA relative protein expression, and tended to alter the ratio of p-ERK1/2/total ERK1/2 protein expression in a dose-dependent manner. Furthermore, asprosin increased p-53 gene expression in basal culture conditions and with or without FSH and IGF1. Taken together, findings of this study show that asprosin is a regulator of granulosa cell functions and the effects of asprosin depend on dose and cell culture conditions.
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Affiliation(s)
- Isadora Maria Batalha
- Departament of Agriculture, Veterinary, and Rangeland Sciences, University of Nevada, Reno, NV 89557, USA
| | - Excel Rio S Maylem
- Department of Animal and Food Sciences, Oklahoma State University Stillwater, OK 74078, USA
| | - Leon J Spicer
- Department of Animal and Food Sciences, Oklahoma State University Stillwater, OK 74078, USA
| | - Camilo Andres Pena Bello
- Departament of Agriculture, Veterinary, and Rangeland Sciences, University of Nevada, Reno, NV 89557, USA
| | - Evandro Carlos Archilia
- Departament of Agriculture, Veterinary, and Rangeland Sciences, University of Nevada, Reno, NV 89557, USA
| | - Luis Fernando Schütz
- Departament of Agriculture, Veterinary, and Rangeland Sciences, University of Nevada, Reno, NV 89557, USA.
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12
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Li J, Sun H, Wang Y, Liu J, Wang G. Apolipoprotein C3 is negatively associated with estrogen and mediates the protective effect of estrogen on hypertriglyceridemia in obese adults. Lipids Health Dis 2023; 22:29. [PMID: 36855114 PMCID: PMC9972754 DOI: 10.1186/s12944-023-01797-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 02/23/2023] [Indexed: 03/02/2023] Open
Abstract
BACKGROUND Both estrogen and apolipoprotein C3 (ApoC3) play crucial roles in lipid metabolism. But the link between them remains unclear, and it is unknown whether estrogen regulates triglyceride (TG) levels via ApoC3. Researchers hypothesized that estrogen exerts a regulatory effect on ApoC3 metabolism, and that this regulation could play a significant role in lipid metabolism. To explore this potential link, the present investigation aimed to examine the associations between estradiol (E2), ApoC3, and TG levels in both males and females. METHODS A total of 519 obese people (133 males and 386 premenopausal females) were recruited. Based on their TG levels, the participants were split into two groups [hypertriglyceridemia (HTG) group: TG ≥ 1.7 mmol/L; control group: TG < 1.7 mmol/L]. Serum ApoC3, E2, and TG levels were measured and compared in those two groups for both sexes separately. To ascertain the connection among E2, ApoC3, and TG, linear regression and mediation analysis were used. RESULTS Participants in the HTG group presented higher levels of ApoC3 (P < 0.001). In contrast, they tend to have lower E2 levels than the control. Linear regression analysis proposed that in both sexes, E2 was negatively associated with ApoC3 levels. The relationship remained significant after adjustment for confounding factors (male: standardized β = -0.144, t = -2.392, P < 0.05; female: standardized β = -0.077, t = -2.360, P < 0.001). Furthermore, mediation analysis revealed the relationship between reduced E2 levels and elevated TG levels is directly mediated by ApoC3. CONCLUSIONS In obese men and premenopausal women, ApoC3 was negatively and linearly correlated with serum E2 levels. The findings showed that estrogen may suppress ApoC3 expression and thus lower TG levels.
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Affiliation(s)
- Jinman Li
- grid.411607.5Department of Endocrinology, Beijing Chao-Yang Hospital, Capital Medical University, No. 8, Gongti South Road, Chaoyang District, Beijing, 100020 China
| | - Honglin Sun
- grid.411607.5Department of Endocrinology, Beijing Chao-Yang Hospital, Capital Medical University, No. 8, Gongti South Road, Chaoyang District, Beijing, 100020 China
| | - Ying Wang
- grid.411607.5Department of Medical Examination, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, 100020 China
| | - Jia Liu
- Department of Endocrinology, Beijing Chao-Yang Hospital, Capital Medical University, No. 8, Gongti South Road, Chaoyang District, Beijing, 100020, China.
| | - Guang Wang
- Department of Endocrinology, Beijing Chao-Yang Hospital, Capital Medical University, No. 8, Gongti South Road, Chaoyang District, Beijing, 100020, China.
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13
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Kuryłowicz A. Estrogens in Adipose Tissue Physiology and Obesity-Related Dysfunction. Biomedicines 2023; 11:biomedicines11030690. [PMID: 36979669 PMCID: PMC10045924 DOI: 10.3390/biomedicines11030690] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 02/21/2023] [Accepted: 02/22/2023] [Indexed: 03/30/2023] Open
Abstract
Menopause-related decline in estrogen levels is accompanied by a change in adipose tissue distribution from a gynoid to an android and an increased prevalence of obesity in women. These unfavorable phenomena can be partially restored by hormone replacement therapy, suggesting a significant role for estrogen in the regulation of adipocytes' function. Indeed, preclinical studies proved the involvement of these hormones in adipose tissue development, metabolism, and inflammatory activity. However, the relationship between estrogen and obesity is bidirectional. On the one hand-their deficiency leads to excessive fat accumulation and impairs adipocyte function, on the other-adipose tissue of obese individuals is characterized by altered expression of estrogen receptors and key enzymes involved in their synthesis. This narrative review aims to summarize the role of estrogen in adipose tissue development, physiology, and in obesity-related dysfunction. Firstly, the estrogen classification, synthesis, and modes of action are presented. Next, their role in regulating adipogenesis and adipose tissue activity in health and the course of obesity is described. Finally, the potential therapeutic applications of estrogen and its derivates in obesity treatment are discussed.
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Affiliation(s)
- Alina Kuryłowicz
- Department of Human Epigenetics, Mossakowski Medical Research Centre PAS, 02-106 Warsaw, Poland
- Department of General Medicine and Geriatric Cardiology, Medical Centre of Postgraduate Education, 00-401 Warsaw, Poland
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14
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Interaction between gut microbiota and sex hormones and their relation to sexual dimorphism in metabolic diseases. Biol Sex Differ 2023; 14:4. [PMID: 36750874 PMCID: PMC9903633 DOI: 10.1186/s13293-023-00490-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 01/30/2023] [Indexed: 02/09/2023] Open
Abstract
Metabolic diseases, such as obesity, metabolic syndrome (MetS) and type 2 diabetes (T2D), are now a widespread pandemic in the developed world. These pathologies show sex differences in their development and prevalence, and sex steroids, mainly estrogen and testosterone, are thought to play a prominent role in this sexual dimorphism. The influence of sex hormones on these pathologies is not only reflected in differences between men and women, but also between women themselves, depending on the hormonal changes associated with the menopause. The observed sex differences in gut microbiota composition have led to multiple studies highlighting the interaction between steroid hormones and the gut microbiota and its influence on metabolic diseases, ultimately pointing to a new therapy for these diseases based on the manipulation of the gut microbiota. This review aims to shed light on the role of sexual hormones in sex differences in the development and prevalence of metabolic diseases, focusing on obesity, MetS and T2D. We focus also the interaction between sex hormones and the gut microbiota, and in particular the role of microbiota in aspects such as gut barrier integrity, inflammatory status, and the gut-brain axis, given the relevance of these factors in the development of metabolic diseases.
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15
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LSD1 for the Targeted Regulation of Adipose Tissue. Curr Issues Mol Biol 2022; 45:151-163. [PMID: 36661498 PMCID: PMC9857158 DOI: 10.3390/cimb45010012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 11/23/2022] [Accepted: 12/21/2022] [Indexed: 12/29/2022] Open
Abstract
White and thermal (brown and beige) adipose tissue energy storage and oxidative regulation pathways play a central role in maintaining the energy balance throughout the body, and the dysregulation of these pathways is closely related to glucose and lipid metabolism disorders and adipose tissue dysfunction, including obesity, chronic inflammation, insulin resistance, mitochondrial dysfunction, and fibrosis. Recent epigenetic studies have identified the novel regulatory element LSD1, which controls the above parameters, and have provided new mechanistic possibilities for re-encoding the fate and function of adipocytes. In this review, we outline the current advances in adipocyte metabolism in physiology and disease and discuss possible strategies for LSD1 to alter the phenotype of adipose tissue and thus influence energy utilization to improve metabolic health.
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16
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Almutlaq RN, Newell-Fugate AE, Evans LC, Fatima H, Gohar EY. Aromatase inhibition increases blood pressure and markers of renal injury in female rats. Am J Physiol Renal Physiol 2022; 323:F349-F360. [PMID: 35900340 PMCID: PMC9423724 DOI: 10.1152/ajprenal.00055.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 06/22/2022] [Accepted: 07/13/2022] [Indexed: 11/22/2022] Open
Abstract
Aromatase is a monooxygenase that catalyzes the rate-limiting step of estrogen biosynthesis from androgens. Aromatase inhibitors are widely used for the treatment of patients with hormone receptor-positive breast cancer. However, the effects of aromatase inhibitors on cardiovascular and renal health in females are understudied. Given that estrogen is protective against cardiovascular and kidney diseases, we hypothesized that aromatase inhibition elevates blood pressure and induces kidney injury in female Sprague-Dawley rats. Twelve-week-old female rats were implanted with radiotelemetry transmitters to continuously monitor blood pressure. After baseline blood pressure recording, rats were randomly assigned to treatment with the aromatase inhibitor anastrozole (ASZ) or vehicle (Veh) in drinking water. Twenty days after treatment initiation, rats were shifted from a normal-salt (NS) diet to a high-salt (HS) diet for an additional 40 days. Rats were euthanized 60 days after treatment initiation. Body weight increased in both groups over the study period, but the increase was greater in the ASZ-treated group than in the Veh-treated group. Mean arterial pressure increased in ASZ-treated rats during the NS and HS diet phases but remained unchanged in Veh-treated rats. In addition, urinary excretion of albumin and kidney injury marker-1 and plasma urea were increased in response to aromatase inhibition. Furthermore, histological assessment revealed that ASZ treatment increased morphological evidence of renal tubular injury and proximal tubular brush border loss. In conclusion, chronic aromatase inhibition in vivo with ASZ increases blood pressure and markers of renal proximal tubular injury in female Sprague-Dawley rats, suggesting an important role for aromatization in the maintenance cardiovascular and renal health in females.NEW & NOTEWORTHY Aromatase enzyme catalyzes the rate-limiting step in estrogen biosynthesis. Aromatase inhibitors are clinically used for the treatment of patients with breast cancer; however, the impact of inhibiting aromatization on blood pressure and renal function is incompletely understood. The present findings demonstrate that systemic anastrozole treatment increases blood pressure and renal tubular injury markers in female rats fed a high-salt diet, suggesting an important role for aromatization in preserving cardiovascular and renal health in females.
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Affiliation(s)
- Rawan N Almutlaq
- Cardiorenal Physiology and Medicine Section, Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Annie E Newell-Fugate
- Department of Veterinary Physiology and Pharmacology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas
| | - Louise C Evans
- Department of Surgery, Medical School, University of Minnesota, Minneapolis, Minnesota
| | - Huma Fatima
- Division of Anatomic and Clinical Pathology, Department of Pathology, School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Eman Y Gohar
- Division of Nephrology and Hypertension, Vanderbilt University Medical Center, Nashville, Tennessee
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17
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Goo B, Ahmadieh S, Zarzour A, Yiew NKH, Kim D, Shi H, Greenway J, Cave S, Nguyen J, Aribindi S, Wendolowski M, Veerapaneni P, Ogbi M, Chen W, Lei Y, Lu XY, Kim HW, Weintraub NL. Sex-Dependent Role of Adipose Tissue HDAC9 in Diet-Induced Obesity and Metabolic Dysfunction. Cells 2022; 11:2698. [PMID: 36078104 PMCID: PMC9454798 DOI: 10.3390/cells11172698] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 08/25/2022] [Accepted: 08/26/2022] [Indexed: 11/16/2022] Open
Abstract
Obesity is a major risk factor for both metabolic and cardiovascular disease. We reported that, in obese male mice, histone deacetylase 9 (HDAC9) is upregulated in adipose tissues, and global deletion of HDAC9 protected against high fat diet (HFD)-induced obesity and metabolic disease. Here, we investigated the impact of adipocyte-specific HDAC9 gene deletion on diet-induced obesity in male and female mice. The HDAC9 gene expression was increased in adipose tissues of obese male and female mice and HDAC9 expression correlated positively with body mass index in humans. Interestingly, female, but not male, adipocyte-specific HDAC9 KO mice on HFD exhibited reduced body weight and visceral adipose tissue mass, adipocyte hypertrophy, and improved insulin sensitivity, glucose tolerance and adipogenic differentiation gene expression. Furthermore, adipocyte-specific HDAC9 gene deletion in female mice improved metabolic health as assessed by whole body energy expenditure, oxygen consumption, and adaptive thermogenesis. Mechanistically, compared to female mice, HFD-fed male mice exhibited preferential HDAC9 expression in the stromovascular fraction, which may have offset the impact of adipocyte-specific HDAC9 gene deletion in male mice. These results suggest that HDAC9 expressed in adipocytes is detrimental to obesity in female mice and provides novel evidence of sex-related differences in HDAC9 cellular expression and contribution to obesity-related metabolic disease.
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Affiliation(s)
- Brandee Goo
- Vascular Biology Center, Medical College of Georgia, Augusta University, 1120 15th St., CB3940, Augusta, GA 30912, USA
| | - Samah Ahmadieh
- Vascular Biology Center, Medical College of Georgia, Augusta University, 1120 15th St., CB3940, Augusta, GA 30912, USA
- Department of Medicine, Medical College of Georgia, Augusta University, 1120 15th St., BI5076, Augusta, GA 30912, USA
| | - Abdalrahman Zarzour
- Vascular Biology Center, Medical College of Georgia, Augusta University, 1120 15th St., CB3940, Augusta, GA 30912, USA
- Department of Medicine, Medical College of Georgia, Augusta University, 1120 15th St., BI5076, Augusta, GA 30912, USA
| | - Nicole K. H. Yiew
- Vascular Biology Center, Medical College of Georgia, Augusta University, 1120 15th St., CB3940, Augusta, GA 30912, USA
| | - David Kim
- Vascular Biology Center, Medical College of Georgia, Augusta University, 1120 15th St., CB3940, Augusta, GA 30912, USA
| | - Hong Shi
- Vascular Biology Center, Medical College of Georgia, Augusta University, 1120 15th St., CB3940, Augusta, GA 30912, USA
- Department of Medicine, Medical College of Georgia, Augusta University, 1120 15th St., BI5076, Augusta, GA 30912, USA
| | - Jacob Greenway
- Vascular Biology Center, Medical College of Georgia, Augusta University, 1120 15th St., CB3940, Augusta, GA 30912, USA
| | - Stephen Cave
- Vascular Biology Center, Medical College of Georgia, Augusta University, 1120 15th St., CB3940, Augusta, GA 30912, USA
| | - Jenny Nguyen
- Vascular Biology Center, Medical College of Georgia, Augusta University, 1120 15th St., CB3940, Augusta, GA 30912, USA
| | - Swetha Aribindi
- Vascular Biology Center, Medical College of Georgia, Augusta University, 1120 15th St., CB3940, Augusta, GA 30912, USA
| | - Mark Wendolowski
- Vascular Biology Center, Medical College of Georgia, Augusta University, 1120 15th St., CB3940, Augusta, GA 30912, USA
| | - Praneet Veerapaneni
- Vascular Biology Center, Medical College of Georgia, Augusta University, 1120 15th St., CB3940, Augusta, GA 30912, USA
| | - Mourad Ogbi
- Vascular Biology Center, Medical College of Georgia, Augusta University, 1120 15th St., CB3940, Augusta, GA 30912, USA
| | - Weiqin Chen
- Departments of Physiology and Regenerative Medicine, Medical College of Georgia, Augusta University, 1120 15th St., CA3126, Augusta, GA 30912, USA
| | - Yun Lei
- Departments of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, 1120 15th St., CA3008, Augusta, GA 30912, USA
| | - Xin-Yun Lu
- Departments of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, 1120 15th St., CA3008, Augusta, GA 30912, USA
| | - Ha Won Kim
- Vascular Biology Center, Medical College of Georgia, Augusta University, 1120 15th St., CB3940, Augusta, GA 30912, USA
- Department of Medicine, Medical College of Georgia, Augusta University, 1120 15th St., BI5076, Augusta, GA 30912, USA
| | - Neal L. Weintraub
- Vascular Biology Center, Medical College of Georgia, Augusta University, 1120 15th St., CB3940, Augusta, GA 30912, USA
- Department of Medicine, Medical College of Georgia, Augusta University, 1120 15th St., BI5076, Augusta, GA 30912, USA
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18
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Ostinelli G, Laforest S, Denham SG, Gauthier MF, Drolet-Labelle V, Scott E, Hould FS, Marceau S, Homer NZM, Bégin C, Andrew R, Tchernof A. Increased Adipose Tissue Indices of Androgen Catabolism and Aromatization in Women With Metabolic Dysfunction. J Clin Endocrinol Metab 2022; 107:e3330-e3342. [PMID: 35511873 PMCID: PMC9282357 DOI: 10.1210/clinem/dgac261] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Indexed: 02/02/2023]
Abstract
CONTEXT Body fat distribution is a risk factor for obesity-associated comorbidities, and adipose tissue dysfunction plays a role in this association. In humans, there is a sex difference in body fat distribution, and steroid hormones are known to regulate several cellular processes within adipose tissue. OBJECTIVE Our aim was to investigate if intra-adipose steroid concentration and expression or activity of steroidogenic enzymes were associated with features of adipose tissue dysfunction in individuals with severe obesity. METHODS Samples from 40 bariatric candidates (31 women, 9 men) were included in the study. Visceral (VAT) and subcutaneous adipose tissue (SAT) were collected during surgery. Adipose tissue morphology was measured by a combination of histological staining and semi-automated quantification. Following extraction, intra-adipose and plasma steroid concentrations were determined by liquid chromatography electrospray ionization tandem mass spectrometry (LC-ESI-MS/MS). Aromatase activity was estimated using product over substrate ratio, while AKR1C2 activity was measured directly by fluorogenic probe. Gene expression was measured by quantitative PCR. RESULTS VAT aromatase activity was positively associated with VAT adipocyte hypertrophy (P valueadj < 0.01) and negatively with plasma high-density lipoprotein (HDL)-cholesterol (P valueadj < 0.01), while SAT aromatase activity predicted dyslipidemia in women even after adjustment for waist circumference, age, and hormonal contraceptive use. We additionally compared women with high and low visceral adiposity index (VAI) and found that VAT excess is characterized by adipose tissue dysfunction, increased androgen catabolism mirrored by increased AKR1C2 activity, and higher aromatase expression and activity indices. CONCLUSION In women, increased androgen catabolism or aromatization is associated with visceral adiposity and adipose tissue dysfunction.
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Affiliation(s)
- Giada Ostinelli
- Centre de recherche de l’Institut universitaire de cardiologie et pneumologie de Québec-Université Laval, Québec City, QC G1V 4G5, Canada
- École de nutrition, Université Laval, Québec City, QC G1V 0A6, Canada
| | - Sofia Laforest
- Centre de recherche de l’Institut universitaire de cardiologie et pneumologie de Québec-Université Laval, Québec City, QC G1V 4G5, Canada
- École de nutrition, Université Laval, Québec City, QC G1V 0A6, Canada
- University of Strathclyde, Glasgow G1 1XQ, UK
- Mass Spectrometry Core, Edinburgh Clinical Research Facility, University/BHF, Cardiovascular Sciences, University of Edinburgh, Queen’s Medical Research Institute, Edinburgh, EH16 4TJ, UK
| | - Scott G Denham
- Mass Spectrometry Core, Edinburgh Clinical Research Facility, University/BHF, Cardiovascular Sciences, University of Edinburgh, Queen’s Medical Research Institute, Edinburgh, EH16 4TJ, UK
| | - Marie-Frederique Gauthier
- Centre de recherche de l’Institut universitaire de cardiologie et pneumologie de Québec-Université Laval, Québec City, QC G1V 4G5, Canada
| | | | - Emma Scott
- Faculté de médecine, Université Laval, Québec City, QC G1V 0A6, Canada
| | - Frédéric-Simon Hould
- Centre de recherche de l’Institut universitaire de cardiologie et pneumologie de Québec-Université Laval, Québec City, QC G1V 4G5, Canada
- Faculté de médecine, Université Laval, Québec City, QC G1V 0A6, Canada
| | - Simon Marceau
- Centre de recherche de l’Institut universitaire de cardiologie et pneumologie de Québec-Université Laval, Québec City, QC G1V 4G5, Canada
- Faculté de médecine, Université Laval, Québec City, QC G1V 0A6, Canada
| | - Natalie Z M Homer
- Mass Spectrometry Core, Edinburgh Clinical Research Facility, University/BHF, Cardiovascular Sciences, University of Edinburgh, Queen’s Medical Research Institute, Edinburgh, EH16 4TJ, UK
| | - Catherine Bégin
- Centre de recherche de l’Institut universitaire de cardiologie et pneumologie de Québec-Université Laval, Québec City, QC G1V 4G5, Canada
- École de psychologie, Université Laval, Québec City, QC G1V 0A6, Canada
| | - Ruth Andrew
- Mass Spectrometry Core, Edinburgh Clinical Research Facility, University/BHF, Cardiovascular Sciences, University of Edinburgh, Queen’s Medical Research Institute, Edinburgh, EH16 4TJ, UK
- BHF/CVS, Queen’s Medical Research Institute, University of Edinburgh, EH16 4TJ, UK
| | - André Tchernof
- Correspondence: Andre Tchernof, PhD, Quebec Heart and Lung Institute, School of Nutrition, Laval University, 2725 Chemin Sainte-Foy (Y-4212), Québec, QC G1V 4G5, Canada.
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19
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Juppi H, Sipilä S, Fachada V, Hyvärinen M, Cronin N, Aukee P, Karppinen JE, Selänne H, Kujala UM, Kovanen V, Karvinen S, Laakkonen EK. Total and regional body adiposity increases during menopause-evidence from a follow-up study. Aging Cell 2022; 21:e13621. [PMID: 35509177 PMCID: PMC9197413 DOI: 10.1111/acel.13621] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Revised: 02/14/2022] [Accepted: 04/12/2022] [Indexed: 12/19/2022] Open
Abstract
For women, menopausal transition is a time of significant hormonal changes, which may contribute to altered body composition and regional adipose tissue accumulation. Excess adiposity, and especially adipose tissue accumulation in the central body region, increases women's risk of cardiovascular and metabolic conditions and affects physical functioning. We investigated the associations between menopausal progression and total and regional body adiposity measured with dual-energy X-ray absorptiometry and computed tomography in two longitudinal cohort studies of women aged 47-55 (n = 230 and 148, mean follow-up times 1.3 ± 0.7 and 3.9 ± 0.2 years, mean baseline BMI 25.5 kg/m2 ). We also examined associations between menopausal progression and skeletal muscle fiber characteristics, as well as adipose tissue-derived adipokines. Relative increases of 2%-14% were observed in regional and total body adiposity measures, with a pronounced fat mass increase in the android area (4% and 14% during short- and long-term follow-ups). Muscle fiber oxidative and glycolytic capacities and intracellular adiposity were not affected by menopause, but were differentially correlated with total and regional body adiposity at different menopausal stages. Menopausal progression and regional adipose tissue masses were positively associated with serum adiponectin and leptin, and negatively associated with resistin levels. Higher diet quality and physical activity level were also inversely associated with several body adiposity measures. Therefore, healthy lifestyle habits before and during menopause might delay the onset of severe metabolic conditions in women.
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Affiliation(s)
- Hanna‐Kaarina Juppi
- Gerontology Research Center and Faculty of Sport and Health Sciences University of Jyväskylä Jyväskylä Finland
| | - Sarianna Sipilä
- Gerontology Research Center and Faculty of Sport and Health Sciences University of Jyväskylä Jyväskylä Finland
| | - Vasco Fachada
- Faculty of Sport and Health Sciences University of Jyväskylä Jyväskylä Finland
| | - Matti Hyvärinen
- Gerontology Research Center and Faculty of Sport and Health Sciences University of Jyväskylä Jyväskylä Finland
| | - Neil Cronin
- Neuromuscular Research Center, Faculty of Sport and Health Sciences University of Jyväskylä Jyväskylä Finland
- School of Sport and Exercise University of Gloucestershire Cheltenham UK
| | - Pauliina Aukee
- Department of Obstetrics and Gynecology Central Finland Health Care District Jyväskylä Finland
| | - Jari E. Karppinen
- Faculty of Sport and Health Sciences University of Jyväskylä Jyväskylä Finland
| | - Harri Selänne
- Department of Psychology University of Jyväskylä Jyväskylä Finland
| | - Urho M. Kujala
- Faculty of Sport and Health Sciences University of Jyväskylä Jyväskylä Finland
| | - Vuokko Kovanen
- Faculty of Sport and Health Sciences University of Jyväskylä Jyväskylä Finland
| | - Sira Karvinen
- Gerontology Research Center and Faculty of Sport and Health Sciences University of Jyväskylä Jyväskylä Finland
| | - Eija K. Laakkonen
- Gerontology Research Center and Faculty of Sport and Health Sciences University of Jyväskylä Jyväskylä Finland
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20
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Lee YS, Lee KH. Expressional Evaluation of C/EBP Family, SREBP1, and Steroid Hormone
Receptors in the Epididiymal Fat of Postnatally Developing Mouse. Dev Reprod 2022; 26:49-58. [PMID: 35950166 PMCID: PMC9336211 DOI: 10.12717/dr.2022.26.2.49] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 04/13/2022] [Accepted: 05/14/2022] [Indexed: 11/24/2022]
Abstract
The differentiation and development of preadipocyte into mature adipocyte
are regulated by transcription factors, such as CCAAT
enhancer binding protein (Cebp) gene family and sterol
regulatory element binding transcription factor 1 (Srebp1).
Steroid hormones give influences on the development and function of adipocyte.
The present research examined expression patterns of CCAAT
enhancer binding protein alpha (Cebpa), CCAAT enhancer binding
protein beta (Cebpb), CCAAT enhancer binding protein gamma
(Cebpg), sterol regulatory element binding transcription
factor 1 (Srebp1), androgen receptor (Ar), and
estrogen receptors (Esr) among different epididymal fat
parts during postnatal period by quantitative real-time
polymerase chain reaction. In the distal epididymal fat, expression of
Cebpa, Cebpb, Cebpg,
Srebp1, Ar, and Esr2 was
increased until 12 months of age, while expression of Esr1 was
decreased at 5 months of age and was not detectable after 8 months of age. In
the proximal epididymal fat, transcript levels of Cebps and
Srebp1 were increased at 8 months of age, followed by
decreases of Cebpb and Cebpg transcript levels
at 12 months of age. An additional increase of Srebp1
expression was observed at 12 months of age. Expression of Ar
and Esr2 were increased until 8 months of age, followed by a
drop of Ar expression level at 12 months of age. Expression
pattern of Esr1 was similar to that in the
distal epididymal fat. In the tail epididymal fat, expression of
Cebpa, Cebpg, Srebp1,
Ar, and Esr2 was increased with age.
Esr1 was not detectable at all. The highest level of
Cebpb was observed at 8 months of age. These data suggest
the possibility of developmental and functional differentiation among the
epididymal fat parts.
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Affiliation(s)
- Yong-Seung Lee
- Dept. of Biological Science, Sungkyunkwan
University, Suwon 16419, Korea
| | - Ki-Ho Lee
- Dept. of Biochemistry and Molecular
Biology, College of Medicine, Eulji University,
Daejeon 34824, Korea
- Corresponding author Ki-Ho Lee, Dept. of
Biochemistry and Molecular, Biology, Eulji University, Daejeon 34824, Korea,
Tel: +82-42-259-1643, Fax:
+82-42-259-1649, E-mail:
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21
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Steiner BM, Berry DC. The Regulation of Adipose Tissue Health by Estrogens. Front Endocrinol (Lausanne) 2022; 13:889923. [PMID: 35721736 PMCID: PMC9204494 DOI: 10.3389/fendo.2022.889923] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 04/25/2022] [Indexed: 12/14/2022] Open
Abstract
Obesity and its' associated metabolic diseases such as type 2 diabetes and cardiometabolic disorders are significant health problems confronting many countries. A major driver for developing obesity and metabolic dysfunction is the uncontrolled expansion of white adipose tissue (WAT). Specifically, the pathophysiological expansion of visceral WAT is often associated with metabolic dysfunction due to changes in adipokine secretion profiles, reduced vascularization, increased fibrosis, and enrichment of pro-inflammatory immune cells. A critical determinate of body fat distribution and WAT health is the sex steroid estrogen. The bioavailability of estrogen appears to favor metabolically healthy subcutaneous fat over visceral fat growth while protecting against changes in metabolic dysfunction. Our review will focus on the role of estrogen on body fat partitioning, WAT homeostasis, adipogenesis, adipocyte progenitor cell (APC) function, and thermogenesis to control WAT health and systemic metabolism.
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Affiliation(s)
| | - Daniel C. Berry
- Division of Nutritional Sciences, Cornell University, Ithaca, NY, United States
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22
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Hackney AC, Koltun KJ, Williett HN. Menstrual cycle hormonal changes: estradiol-β-17 and progesterone interactions on exercise fat oxidation. Endocrine 2022; 76:240-242. [PMID: 35113336 PMCID: PMC9927241 DOI: 10.1007/s12020-022-02998-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Accepted: 01/24/2022] [Indexed: 11/03/2022]
Affiliation(s)
- A C Hackney
- University of North Carolina, Chapel Hill, NC, USA.
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23
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Comparison of Anthropometric and Physiological Profiles of Hungarian Female Rowers across Age Categories, Rankings, and Stages of Sports Career. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12052649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
There is very little research on the anthropometric and physiological profiles of lower-ranked young female athletes, even though, in most rowing clubs, such rowers constitute the vast majority. Therefore, this study investigated the anthropometric and physiological profiles of young Hungarian female rowers of different age categories and sports rankings (international vs. club). Anthropometric and physiological profiles were created for 36 junior (15–16 years), 26 older-junior (17–18 years), and 8 senior (19–21 years) female rowers who were club and international ranked members of seven of the largest Hungarian rowing clubs. Rowers >17-years-old with international rankings significantly outperformed their age-group peers with club rankings in terms of power, absolute VO2 max, and time to cover 2000 m, among other differences, but such differences were not observed with junior rowers. In all age groups, the length of the athletes’ sports career was not significantly associated with differences in anthropometric and physiological characteristics. This study suggests that ranking is not associated with differences in the anthropometric and physiological characteristics of juniors. Thus, with non-elite juniors, it can be more difficult to predict competition outcomes based on differences in anthropometric and physiological profiles.
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24
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Häussler S, Sadri H, Ghaffari MH, Sauerwein H. Symposium review: Adipose tissue endocrinology in the periparturient period of dairy cows. J Dairy Sci 2022; 105:3648-3669. [PMID: 35181138 DOI: 10.3168/jds.2021-21220] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 01/05/2022] [Indexed: 12/17/2022]
Abstract
The involvement of adipose tissue (AT) in metabolism is not limited to energy storage but turned out to be much more complex. We now know that in addition to lipid metabolism, AT is important in glucose homeostasis and AA metabolism and also has a role in inflammatory processes. With the discovery of leptin in 1994, the concept of AT being able to secrete messenger molecules collectively termed as adipokines, and acting in an endo-, para-, and autocrine manner emerged. Moreover, based on its asset of receptors, many stimuli from other tissues reaching AT via the bloodstream can also elicit distinct responses and thus integrate AT as a control element in the regulatory circuits of the whole body's functions. The protein secretome of human differentiated adipocytes was described to comprise more than 400 different proteins. However, in dairy cows, the characterization of the physiological time course of adipokines in AT during the transition from pregnancy to lactation is largely limited to the mRNA level; for the protein level, the analytical methods are limited and available assays often lack sound validation. In addition to proteinaceous adipokines, small compounds such as steroids can also be secreted from AT. Due to the lipophilic nature of steroids, they are stored in AT, but during the past years, AT became also known as being able to metabolize and even to generate steroid hormones de novo. In high-yielding dairy cows, AT is substantially mobilized due to increased energy requirements related to lactation. As to whether the steroidogenic system in AT is affected and may change during the common loss of body fat is largely unknown. Moreover, most research about AT in transition dairy cows is based on subcutaneous AT, whereas other depots have scarcely been investigated. This contribution aims to review the changes in adipokine mRNA and-where available-protein expression with time relative to calving in high-yielding dairy cows at different conditions, including parity, body condition, diet, specific feed supplements, and health disorders. In addition, the review provides insights into steroidogenic pathways in dairy cows AT, and addresses differences between fat depots where possible.
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Affiliation(s)
- Susanne Häussler
- Institute of Animal Science, Physiology Unit, University of Bonn, 53115 Bonn, Germany.
| | - Hassan Sadri
- Department of Clinical Science, Faculty of Veterinary Medicine, University of Tabriz, 516616471 Tabriz, Iran
| | - Morteza H Ghaffari
- Institute of Animal Science, Physiology Unit, University of Bonn, 53115 Bonn, Germany
| | - Helga Sauerwein
- Institute of Animal Science, Physiology Unit, University of Bonn, 53115 Bonn, Germany
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25
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Schuh K, Häussler S, Sadri H, Prehn C, Lintelmann J, Adamski J, Koch C, Frieten D, Ghaffari MH, Dusel G, Sauerwein H. Blood and adipose tissue steroid metabolomics and mRNA expression of steroidogenic enzymes in periparturient dairy cows differing in body condition. Sci Rep 2022; 12:2297. [PMID: 35145150 PMCID: PMC8831572 DOI: 10.1038/s41598-022-06014-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Accepted: 01/20/2022] [Indexed: 12/29/2022] Open
Abstract
In high-yielding dairy cows, the rapidly increasing milk production after parturition can result in a negative nutrient balance, since feed intake is insufficient to cover the needs for lactation. Mobilizing body reserves, mainly adipose tissue (AT), might affect steroid metabolism. We hypothesized, that cows differing in the extent of periparturient lipomobilization, will have divergent steroid profiles measured in serum and subcutaneous (sc)AT by a targeted metabolomics approach and steroidogenic enzyme profiles in scAT and liver. Fifteen weeks antepartum, 38 multiparous Holstein cows were allocated to a high (HBCS) or normal body condition (NBCS) group fed differently until week 7 antepartum to either increase (HBCS BCS: 3.8 ± 0.1 and BFT: 2.0 ± 0.1 cm; mean ± SEM) or maintain BCS (NBCS BCS: 3.0 ± 0.1 and BFT: 0.9 ± 0.1 cm). Blood samples, liver, and scAT biopsies were collected at week -7, 1, 3, and 12 relative to parturition. Greater serum concentrations of progesterone, androsterone, and aldosterone in HBCS compared to NBCS cows after parturition, might be attributed to the increased mobilization of AT. Greater glucocorticoid concentrations in scAT after parturition in NBCS cows might either influence local lipogenesis by differentiation of preadipocytes into mature adipocytes and/or inflammatory response.
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Affiliation(s)
- K Schuh
- Institute of Animal Science, Physiology Unit, University of Bonn, 53115, Bonn, Germany
- Department of Life Sciences and Engineering, Animal Nutrition and Hygiene Unit, University of Applied Sciences Bingen, 55411, Bingen am Rhein, Germany
| | - S Häussler
- Institute of Animal Science, Physiology Unit, University of Bonn, 53115, Bonn, Germany.
| | - H Sadri
- Department of Clinical Science, Faculty of Veterinary Medicine, University of Tabriz, 5166616471, Tabriz, Iran
| | - C Prehn
- Helmholtz Zentrum München, German Research Center for Environmental Health, Metabolomics and Proteomics Core, 85764, Neuherberg, Germany
| | - J Lintelmann
- Helmholtz Zentrum München, German Research Center for Environmental Health, Metabolomics and Proteomics Core, 85764, Neuherberg, Germany
| | - J Adamski
- Institute of Experimental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Neuherberg, Germany
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117597, Singapore
- Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, 1000, Ljubljana, Slovenia
| | - C Koch
- Educational and Research Centre for Animal Husbandry, Hofgut Neumuehle, 67728, Muenchweiler an der Alsenz, Germany
| | - D Frieten
- Thünen Institute of Organic Farming, 23847, Westerau, Germany
| | - M H Ghaffari
- Institute of Animal Science, Physiology Unit, University of Bonn, 53115, Bonn, Germany
| | - G Dusel
- Department of Life Sciences and Engineering, Animal Nutrition and Hygiene Unit, University of Applied Sciences Bingen, 55411, Bingen am Rhein, Germany
| | - H Sauerwein
- Institute of Animal Science, Physiology Unit, University of Bonn, 53115, Bonn, Germany
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26
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Healthy Subcutaneous and Omental Adipose Tissue Is Associated with High Expression of Extracellular Matrix Components. Int J Mol Sci 2022; 23:ijms23010520. [PMID: 35008946 PMCID: PMC8745535 DOI: 10.3390/ijms23010520] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 12/29/2021] [Accepted: 12/30/2021] [Indexed: 12/17/2022] Open
Abstract
Obesity is associated with extensive expansion and remodeling of the adipose tissue architecture, including its microenvironment and extracellular matrix (ECM). Although obesity has been reported to induce adipose tissue fibrosis, the composition of the ECM under healthy physiological conditions has remained underexplored and debated. Here, we used a combination of three established techniques (picrosirius red staining, a colorimetric hydroxyproline assay, and sensitive gene expression measurements) to evaluate the status of the ECM in metabolically healthy lean (MHL) and metabolically unhealthy obese (MUO) subjects. We investigated ECM deposition in the two major human adipose tissues, namely the omental and subcutaneous depots. Biopsies were obtained from the same anatomic region of respective individuals. We found robust ECM deposition in MHL subjects, which correlated with high expression of collagens and enzymes involved in ECM remodeling. In contrast, MUO individuals showed lower expression of ECM components but elevated levels of ECM cross-linking and adhesion proteins, e.g., lysyl oxidase and thrombospondin. Our data suggests that subcutaneous fat is more prone to express proteins involved in ECM remodeling than omental adipose tissues. We conclude that a more dynamic ability to deposit and remodel ECM may be a key signature of healthy adipose tissue, and that subcutaneous fat may adapt more readily to changing metabolic conditions than omental fat.
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27
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Ito T, Yamamoto Y, Yamagishi N, Kanai Y. Stomach secretes estrogen in response to the blood triglyceride levels. Commun Biol 2021; 4:1364. [PMID: 34876651 PMCID: PMC8651635 DOI: 10.1038/s42003-021-02901-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 11/23/2021] [Indexed: 11/29/2022] Open
Abstract
Mammals receive body energy information to maintain energy homeostasis. Ghrelin, insulin, leptin and vagal afferents transmit the status of fasting, blood glucose, body fat, and food intake, respectively. Estrogen also inhibits feeding behavior and lipogenesis, but increases body fat mass. However, how blood triglyceride levels are monitored and the physiological roles of estrogen from the perspective of lipid homeostasis remain unsettled. Here, we show that stomach secretes estrogen in response to the blood triglyceride levels. Estrogen-secreting gastric parietal cells predominantly use fatty acids as an energy source. Blood estrogen levels increase as blood triglyceride levels rise in a stomach-dependent manner. Estrogen levels in stomach tissues increase as blood triglyceride levels rise, and isolated gastric gland epithelium produces estrogen in a fatty acid-dependent manner. We therefore propose that stomach monitors and controls blood triglyceride levels using estrogen, which inhibits feeding behavior and lipogenesis, and promotes triglyceride uptake by adipocytes.
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Affiliation(s)
- Takao Ito
- Cell Biology and Anatomy, Graduate School of Medicine, Wakayama Medical University, Wakayama, Japan
| | - Yuta Yamamoto
- Cell Biology and Anatomy, Graduate School of Medicine, Wakayama Medical University, Wakayama, Japan
| | - Naoko Yamagishi
- Cell Biology and Anatomy, Graduate School of Medicine, Wakayama Medical University, Wakayama, Japan
| | - Yoshimitsu Kanai
- Cell Biology and Anatomy, Graduate School of Medicine, Wakayama Medical University, Wakayama, Japan.
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28
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Hackney AC. Menstrual Cycle Hormonal Changes and Energy Substrate Metabolism in Exercising Women: A Perspective. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph181910024. [PMID: 34639326 PMCID: PMC8508274 DOI: 10.3390/ijerph181910024] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 09/03/2021] [Accepted: 09/16/2021] [Indexed: 01/12/2023]
Abstract
This article discusses the research supporting that the hormonal changes across the menstrual cycle phases affect a woman's physiology during exercise, specifically addressing aspects of energy substrate metabolism and macro-nutrient utilization and oxidation. The overarching aim is to provide a perspective on what are the limitations of earlier research studies that have concluded such hormonal changes do not affect energy metabolism. Furthermore, suggestions are made concerning research approaches in future studies to increase the likelihood of providing evidence-based data in support of the perspective that menstrual cycle hormonal changes do affect energy metabolism in exercising women.
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Affiliation(s)
- Anthony C. Hackney
- Department of Exercise & Sport Science, University of North Carolina, Chapel Hill, NC 27599, USA; ; Tel.: +1-919-962-0334
- Department of Nutrition, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC 27599, USA
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29
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Willett HN, Koltun KJ, Hackney AC. Influence of Menstrual Cycle Estradiol-β-17 Fluctuations on Energy Substrate Utilization-Oxidation during Aerobic, Endurance Exercise. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18137209. [PMID: 34281146 PMCID: PMC8295741 DOI: 10.3390/ijerph18137209] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 06/24/2021] [Accepted: 07/02/2021] [Indexed: 11/16/2022]
Abstract
This study examined the effect of estradiol-β-17 across the menstrual cycle (MC) during aerobic exercise on energy substrate utilization and oxidation. Thirty-two eumenorrheic (age = 22.4 ± 3.8 y (mean ± SD)), physically active women participated in two steady-state running sessions at 65% of VO2max, one during the early follicular and one during the luteal phase of the MC. Blood samples were collected at rest before each exercise session and analyzed for Estradiol-β-17 to confirm the MC phase. Carbohydrate (CHO) utilization and oxidation values were significantly lower (p < 0.05) in the luteal (utilization: 51.6 ± 16.7%; oxidation: 1.22 ± 0.56 g/min; effect size (ES) = 0.45, 0.27) than follicular phase (utilization: 58.2 ± 15.1%; oxidation: 1.38 ± 0.60 g/min) exercise sessions. Conversely, fat utilization and oxidation values were significantly (p < 0.05) higher in the luteal (utilization: 48.4 ± 16.7%; oxidation: 0.49 ± 0.19 g/min; ES = 0.45,0.28) than follicular phase (utilization: 41.8 ± 15.1%; oxidation: 0.41 ± 0.14 g/min). Estradiol-β-17 concentrations were significantly (p < 0.01) greater during the luteal (518.5 ± 285.4 pmol/L; ES = 0.75) than follicular phase (243.8 ± 143.2 pmol/L). Results suggest a greater use of fat and reduced amount of CHO usage during the luteal versus follicular phase, directly related to the change in resting estradiol-β-17. Future research should investigate the role these changes may play in female athletic performance.
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Affiliation(s)
- Hannah N. Willett
- Department of Exercise & Sport Science, University of North Carolina, Chapel Hill, NC 27599, USA;
| | - Kristen J. Koltun
- Department of Sports Medicine and Nutrition, University of Pittsburgh, Pittsburgh, PA 15203, USA;
| | - Anthony C. Hackney
- Department of Exercise & Sport Science, University of North Carolina, Chapel Hill, NC 27599, USA;
- Department of Nutrition, Gillings school of Global Public Health, University of North Carolina, Chapel Hill, NC 27599, USA
- Correspondence:
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30
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Van de Velde F, Bekaert M, Hoorens A, Geerts A, T'Sjoen G, Fiers T, Kaufman JM, Van Nieuwenhove Y, Lapauw B. Histologically proven hepatic steatosis associates with lower testosterone levels in men with obesity. Asian J Androl 2021; 22:252-257. [PMID: 31274482 PMCID: PMC7275796 DOI: 10.4103/aja.aja_68_19] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Men with obesity often present with low testosterone (T) and sex hormone-binding globulin (SHBG) levels. Several mechanisms for this have been proposed, but as SHBG is secreted by hepatocytes and sex steroids undergo hepatic metabolization, this study investigates whether severity and histological components of nonalcoholic fatty liver disease (NAFLD) are associated with sex steroid levels in obese men. This cross-sectional study included 80 obese men (age: 46 ± 11 years; body mass index: 42.2 ± 5.5 kg m−2). Serum levels of total T and estradiol (E2) were measured using liquid chromatography coupled with tandem mass spectroscopy (LC/MS-MS) and SHBG and gonadotropins by immunoassay. Liver biopsies were evaluated using Steatosis, Activity, and Fibrosis scoring. Participants with steatohepatitis had similar median (1st quartile–3rd quartile) total T levels (7.6 [5.0–11.0] nmol l−1 vs 8.2 [7.2–10.9] nmol l−1; P = 0.147), lower calculated free T (cFT) levels (148.9 [122.9–188.8] pmol l−1 vs 199.5 [157.3–237.6] pmol l−1; P = 0.006), and higher free E2/T ratios (10.0 [6.4–13.9] x10-3 vs 7.1 [5.7–10.7] x10-3; P = 0.026) compared to men with only nonalcoholic fatty liver. Among the histological components of NAFLD, only steatosis was independently associated with total T (rs = −0.331, P = 0.003) and cFT levels (rs = −0.255, P = 0.025). Obese men with steatohepatitis have even lower cFT levels compared to those without, an association mainly driven by grade of steatosis. Whether this reflects a subgroup of men with a more severe obesity-related phenotype or results from direct relations between hepatic steatosis and sex steroid metabolism needs further investigation.
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Affiliation(s)
| | - Marlies Bekaert
- Department of Endocrinology, Ghent University Hospital, 9000 Ghent, Belgium
| | - Anne Hoorens
- Department of Pathology, Ghent University Hospital, 9000 Ghent, Belgium
| | - Anja Geerts
- Department of Hepathology, Ghent University Hospital, 9000 Ghent, Belgium
| | - Guy T'Sjoen
- Department of Endocrinology, Ghent University Hospital, 9000 Ghent, Belgium
| | - Tom Fiers
- Department of Clinical Biology, Ghent University Hospital, 9000 Ghent, Belgium
| | - Jean-Marc Kaufman
- Department of Endocrinology, Ghent University Hospital, 9000 Ghent, Belgium
| | - Yves Van Nieuwenhove
- Department of Gastro-Intestinal Surgery, Ghent University Hospital, 9000 Ghent, Belgium
| | - Bruno Lapauw
- Department of Endocrinology, Ghent University Hospital, 9000 Ghent, Belgium
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Baroi S, Czernik PJ, Chougule A, Griffin PR, Lecka-Czernik B. PPARG in osteocytes controls sclerostin expression, bone mass, marrow adiposity and mediates TZD-induced bone loss. Bone 2021; 147:115913. [PMID: 33722775 PMCID: PMC8076091 DOI: 10.1016/j.bone.2021.115913] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 03/05/2021] [Accepted: 03/06/2021] [Indexed: 01/07/2023]
Abstract
The peroxisome proliferator activated receptor gamma (PPARG) nuclear receptor regulates energy metabolism and insulin sensitivity. In this study, we present novel evidence for an essential role of PPARG in the regulation of osteocyte function, and support for the emerging concept of the conjunction between regulation of energy metabolism and bone mass. We report that PPARG is essential for sclerostin production, a recently approved target to treat osteoporosis. Our mouse model of osteocyte-specific PPARG deletion (Dmp1CrePparγflfl or γOTKO) is characterized with increased bone mass and reduced bone marrow adiposity, which is consistent with upregulation of WNT signaling and increased bone forming activity of endosteal osteoblasts. An analysis of osteocytes derived from γOTKO and control mice showed an excellent correlation between PPARG and SOST/sclerostin at the transcript and protein levels. The 8 kb sequence upstream of Sost gene transcription start site possesses multiple PPARG binding elements (PPREs) with at least two of them binding PPARG with dynamics reflecting its activation with full agonist rosiglitazone and correlating with increased levels of Sost transcript and sclerostin protein expression (Pearson's r = 0.991, p = 0.001). Older γOTKO female mice are largely protected from TZD-induced bone loss providing proof of concept that PPARG in osteocytes can be pharmacologically targeted. These findings demonstrate that transcriptional activities of PPARG are essential for sclerostin expression in osteocytes and support consideration of targeting PPARG activities with selective modulators to treat osteoporosis.
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Affiliation(s)
- Sudipta Baroi
- Department of Orthopaedic Surgery, University of Toledo, College of Medicine and Life Sciences, Toledo, OH, United States of America; Center for Diabetes and Endocrine Research, University of Toledo, College of Medicine and Life Sciences, Toledo, OH, United States of America
| | - Piotr J Czernik
- Department of Physiology and Pharmacology, University of Toledo, College of Medicine and Life Sciences, Toledo, OH, United States of America
| | - Amit Chougule
- Department of Orthopaedic Surgery, University of Toledo, College of Medicine and Life Sciences, Toledo, OH, United States of America; Center for Diabetes and Endocrine Research, University of Toledo, College of Medicine and Life Sciences, Toledo, OH, United States of America
| | - Patrick R Griffin
- The Scripps Research Institute, Jupiter, FL, University of Toledo, College of Medicine and Life Sciences, Toledo, OH, United States of America
| | - Beata Lecka-Czernik
- Department of Orthopaedic Surgery, University of Toledo, College of Medicine and Life Sciences, Toledo, OH, United States of America; Department of Physiology and Pharmacology, University of Toledo, College of Medicine and Life Sciences, Toledo, OH, United States of America; Center for Diabetes and Endocrine Research, University of Toledo, College of Medicine and Life Sciences, Toledo, OH, United States of America.
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Wawrzkiewicz-Jałowiecka A, Lalik A, Soveral G. Recent Update on the Molecular Mechanisms of Gonadal Steroids Action in Adipose Tissue. Int J Mol Sci 2021; 22:5226. [PMID: 34069293 PMCID: PMC8157194 DOI: 10.3390/ijms22105226] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 05/04/2021] [Accepted: 05/11/2021] [Indexed: 02/07/2023] Open
Abstract
The gonadal steroids, including androgens, estrogens and progestogens, are involved in the control of body fat distribution in humans. Nevertheless, not only the size and localization of the fat depots depend on the sex steroids levels, but they can also highly affect the functioning of adipose tissue. Namely, the gonadocorticoids can directly influence insulin signaling, lipid metabolism, fatty acid uptake and adipokine production. They may also alter energy balance and glucose homeostasis in adipocytes in an indirect way, e.g., by changing the expression level of aquaglyceroporins. This work presents the recent advances in understanding the molecular mechanism of how the gonadal steroids influence the functioning of adipose tissue leading to a set of detrimental metabolic consequences. Special attention is given here to highlighting the sexual dimorphism of adipocyte functioning in terms of health and disease. Particularly, we discuss the molecular background of metabolic disturbances occurring in consequence of hormonal imbalance which is characteristic of some common endocrinopathies such as the polycystic ovary syndrome. From this perspective, we highlight the potential drug targets and the active substances which can be used in personalized sex-specific management of metabolic diseases, in accord with the patient's hormonal status.
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Affiliation(s)
- Agata Wawrzkiewicz-Jałowiecka
- Department of Physical Chemistry and Technology of Polymers, Silesian University of Technology, 44-100 Gliwice, Poland
| | - Anna Lalik
- Department of Systems Biology and Engineering, Silesian University of Technology, Akademicka 16, 44-100 Gliwice, Poland;
- Biotechnology Center, Silesian University of Technology, B. Krzywoustego 8, 44-100 Gliwice, Poland
| | - Graça Soveral
- Faculty of Pharmacy, Research Institute for Medicines (iMed.ULisboa), Universidade de Lisboa, 1649-003 Lisboa, Portugal;
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Van de Velde F, Deventer K, Van Gansbeke W, Van Eenoo P, Van Renterghem P, Fiers T, Reyns T, Kaufman JM, Van Nieuwenhove Y, Lapauw B. Metabolism of testosterone during weight loss in men with obesity. J Steroid Biochem Mol Biol 2021; 209:105851. [PMID: 33610798 DOI: 10.1016/j.jsbmb.2021.105851] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 01/29/2021] [Accepted: 02/04/2021] [Indexed: 10/22/2022]
Abstract
OBJECTIVE Men with obesity often have low total and, with increasing adiposity, also low free testosterone (T) levels, which can partially restore during weight loss. Although this is partly explained by lower sex hormone binding globulin (SHBG) production and hypothalamic-pituitary downregulation, it is still not unravelled whether changes in androgen metabolism contribute to this phenomenon. Therefore, early changes in urinary excretion of T and its metabolites, during weight loss, in men with obesity are investigated. DESIGN Longitudinal study. METHODS Fourteen men with obesity (age 52(45-60)years, BMI 42.6(41.8-44.8)kg/m²) underwent gastric bypass surgery (GBS). Before surgery and 3 weeks, 6 weeks, 6 months and 1 year thereafter, 24 h urine and fasting serum samples were collected. Serum T and estradiol (E2) levels were analyzed using LC-MS/MS and urinary metabolites of T with GC-MS/MS. RESULTS Already three weeks after GBS, serum SHBG and total T levels increased and remained increased as compared to baseline (all,p < 0.0125). Gonadotropins and (free) E2 levels were unchanged, serum E2/T ratio decreased (p < 0.0125). Total amount of urinary T increased non-significantly with mean increases of 53 % one year after GBS (p = 0.026). Urinary E2/T, estrone/T, 3α-androstanediol/T and androsterone/T ratios decreased after GBS (p < 0.0125). CONCLUSIONS Restoration of circulating T levels during weight loss in this population is not only brought about by normalization of circulating SHBG levels, but increased production of and alterations in T metabolism also contribute. More specifically, relative decreases in aromatization and lower 5α-reductase activity might also be involved in restoring T levels in men with obesity.
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Affiliation(s)
| | - Koen Deventer
- Doping Control Laboratory, Ghent University, Zwijnaarde, Belgium
| | - Wim Van Gansbeke
- Doping Control Laboratory, Ghent University, Zwijnaarde, Belgium
| | - Peter Van Eenoo
- Doping Control Laboratory, Ghent University, Zwijnaarde, Belgium
| | | | - Tom Fiers
- Department of Clinical Biology, Ghent University Hospital, Ghent, Belgium
| | - Tim Reyns
- Department of Clinical Biology, Ghent University Hospital, Ghent, Belgium
| | - Jean Marc Kaufman
- Department of Endocrinology, Ghent University Hospital, Ghent, Belgium
| | - Yves Van Nieuwenhove
- Department of Gastrointestinal Surgery, Ghent University Hospital, Ghent, Belgium
| | - Bruno Lapauw
- Department of Endocrinology, Ghent University Hospital, Ghent, Belgium
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Ilias I, Goulas S, Zabuliene L. Polycystic ovary syndrome: Pathways and mechanisms for possible increased susceptibility to COVID-19. World J Clin Cases 2021; 9:2711-2720. [PMID: 33969054 PMCID: PMC8058679 DOI: 10.12998/wjcc.v9.i12.2711] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 01/16/2021] [Accepted: 03/18/2021] [Indexed: 02/06/2023] Open
Abstract
In 75% of women with polycystic ovary syndrome (PCOS), insulin action is impaired. In obesity, visceral adipose tissue becomes dysfunctional: Chronic inflammation is favored over storage, contributing to the development of metabolic complications. PCOS, metabolic syndrome (MetSy) and non-alcoholic fatty liver disease (NAFLD) apparently share common pathogenic factors; these include abdominal adiposity, excess body weight and insulin resistance. Alterations in the gut microbiome have been noted in women with PCOS compared to controls; these may lead to deterioration of the intestinal barrier, increased gut mucosal permeability and immune system activation, hyperinsulinemia and glucose intolerance, which hamper normal ovarian function and follicular development (all being hallmarks of PCOS). It has been proposed that PCOS may entail higher susceptibility to coronavirus disease 2019 (COVID-19) via its associated comorbidities (NAFLD, obesity, MetSy and alterations in the gut microbiome). Studies have found an association between acute respiratory distress syndrome (seen in severe cases of COVID-19) and the intestinal microbiome. Furthermore, apparently, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) can gain entry to the gastrointestinal tract via locally-expressed angiotensin converting enzyme type 2 receptors. Excess body weight is associated with more severe COVID-19 and increased mortality. Although robust links between SARS-CoV-2 infection and PCOS/NAFLD/gut microbiome/metabolic consequences are yet to be confirmed, it seems that strategies for adapting the intestinal microbiome could help reduce the severity of COVID-19 in women with PCOS with or without NAFLD, MetSy or obesity.
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Affiliation(s)
- Ioannis Ilias
- Department of Endocrinology, Elena Venizelou Hospital, Athens GR-11521, Greece
| | - Spyridon Goulas
- Department of Gastroenterology Unit, Elena Venizelou Hospital, Athens GR-11521, Greece
| | - Lina Zabuliene
- Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius LT-03101, Lithuania
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Arellanes-Licea EDC, Pérez-Mendoza M, Carmona-Castro A, Díaz-Muñoz M, Miranda-Anaya M. Obese Neotomodon alstoni mice exhibit sexual dimorphism in the daily profile of circulating melatonin and clock proteins PER1 and BMAL1 in the hypothalamus and peripheral oscillators. Chronobiol Int 2021; 38:584-597. [PMID: 33393371 DOI: 10.1080/07420528.2020.1860999] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 12/02/2020] [Accepted: 12/03/2020] [Indexed: 12/13/2022]
Abstract
Obesity is a global health threat and a risk factor for several metabolic conditions. Though circadian dysfunction has been considered among the multiple causes of obesity, little work has been done to explore the relationship between obesity, circadian dysfunction, and sexual dimorphism. The Neotomodon alstoni mouse is a suitable model for such research. This study employed N. alstoni mice in a chronobiological analysis to determine whether there is circadian desynchronization of relative PER1 and BMAL1 protein levels in the hypothalamus, liver, visceral white adipose tissue, kidney, and heart. It also compared differences between sexes and lean and obese N. alstoni adult mice, by recording behavior and daily circulating serum melatonin as markers of circadian output. We found that obese mice display reduced locomotor activity. Additionally, Cosinor analyses of the relative expression of PER1 and BMAL1 show differences between lean and obese mice in a sex-linked manner. The PER1 24 h rhythm was absent in all tissues of obese males and significant in the tissues of obese females. The BMAL1 24 h rhythm also was significant in most of the tissues tested in lean males, whereas it was significant and shifted the acrophase (peak time of rhythm) in most of the tissues in obese females. Both lean male and female mice showed a rhythmic 24 h pattern of circulating serum melatonin. This daily profile was not only absent in obese mice of both sexes but showed sexual dimorphism. Obese male mice showed lower circulating levels of melatonin compared to lean male mice, but they were higher in obese females compared to lean females. Our results suggest that obesity in N. alstoni is associated with an internal circadian desynchronization in a sex-dependent manner. Overall, this study reinforces the need for further research on the neuroendocrinology of obesity and circadian rhythms using this biological model.
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Affiliation(s)
- Elvira Del Carmen Arellanes-Licea
- Unidad Multidisciplinaria de Docencia e Investigación, Facultad de Ciencias, Universidad Nacional Autónoma de México, Querétaro, México
| | - Moisés Pérez-Mendoza
- Facultad de Ciencias Naturales, Universidad Autónoma de Querétaro, Querétaro, México
| | - Agustín Carmona-Castro
- Departamento de Biología Celular, Facultad de Ciencias, Ciudad Universitaria, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - Mauricio Díaz-Muñoz
- Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro, México
| | - Manuel Miranda-Anaya
- Unidad Multidisciplinaria de Docencia e Investigación, Facultad de Ciencias, Universidad Nacional Autónoma de México, Querétaro, México
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de Medeiros SF, Rodgers RJ, Norman RJ. Adipocyte and steroidogenic cell cross-talk in polycystic ovary syndrome. Hum Reprod Update 2021; 27:771-796. [PMID: 33764457 DOI: 10.1093/humupd/dmab004] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 01/08/2021] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Metabolic and endocrine alterations in women with polycystic ovary syndrome (PCOS) affect adipose tissue mass and distribution. PCOS is characterised by hyperandrogenism, obesity and adipocyte dysfunction. Hyperandrogenism in PCOS drives dysfunctional adipocyte secretion of potentially harmful adipocytokines. Glucocorticoids and sex-steroids modulate adipocyte development and function. For their part, adipocyte products interact with adrenal and ovarian steroidogenic cells. Currently, the relationship between adipocyte and steroidogenic cells is not clear, and for these reasons, it is important to elucidate the interrelationship between these cells in women with and without PCOS. OBJECTIVE AND RATIONALE This comprehensive review aims to assess current knowledge regarding the interrelationship between adipocytes and adrenal and ovarian steroidogenic cells in animal models and humans with or without PCOS. SEARCH METHODS We searched for articles published in English and Portuguese in PubMed. Keywords were as follows: polycystic ovary syndrome, steroidogenesis, adrenal glands, theca cells, granulosa cells, adipocytes, adipocytokines, obesity, enzyme activation, and cytochrome P450 enzymes. We expanded the search into the references from the retrieved articles. OUTCOMES Glucocorticoids and sex-steroids modulate adipocyte differentiation and function. Dysfunctional adipocyte products play important roles in the metabolic and endocrine pathways in animals and women with PCOS. Most adipokines participate in the regulation of the hypothalamic-pituitary-adrenal and ovarian axes. In animal models of PCOS, hyperinsulinemia and poor fertility are common; various adipokines modulate ovarian steroidogenesis, depending on the species. Women with PCOS secrete unbalanced levels of adipocyte products, characterised by higher levels of leptin and lower levels of adiponectin. Leptin expression positively correlates with body mass index, waist/hip ratio and levels of total cholesterol, triglyceride, luteinising hormone, oestradiol and androgens. Leptin inhibits the production of oestradiol and, in granulosa cells, may modulate 17-hydroxylase and aromatase enzyme activities. Adiponectin levels negatively correlate with fat mass, body mass index, waist-hip ratio, glucose, insulin and triglycerides, and decrease androgen production by altering expression of luteinising hormone receptor, steroidogenic acute regulatory protein, cholesterol-side-chain cleavage enzyme and 17-hydroxylase. Resistin expression positively correlates with body mass index and testosterone, and promotes the expression of 17-hydroxylase enzyme in theca cells. The potential benefits of adipokines in the treatment of women with PCOS require more investigation. WIDER IMPLICATIONS The current data regarding the relationship between adipocyte products and steroidogenic cells are conflicting in animals and humans. Polycystic ovary syndrome is an excellent model to investigate the interrelationship among adipocyte and steroidogenic cells. Women with PCOS manifest some pathological conditions associated with hyperandrogenism and adipocyte products. In animals, cross-talk between cells may vary according to species, and the current review suggests opportunities to test new medications to prevent or even reverse several harmful sequelae of PCOS in humans. Further studies are required to investigate the possible therapeutic application of adipokines in women with obese and non-obese PCOS. Meanwhile, when appropriate, metformin use alone, or associated with flutamide, may be considered for therapeutic purposes.
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Affiliation(s)
- Sebastião Freitas de Medeiros
- Department of Gynecology and Obstetrics, Medical School, Federal University of Mato Grosso; and Tropical Institute of Reproductive Medicine,Cuiabá, MT, Brazil
| | - Raymond Joseph Rodgers
- Paediatrics and Reproductive Health, The University of Adelaide, Adelaide, South Australia, Australia
| | - Robert John Norman
- Robinson Research Institute Adelaide Medical School, Adelaide, South Australia, Australia
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Dou J, Puttabyatappa M, Padmanabhan V, Bakulski KM. Developmental programming: Adipose depot-specific transcriptional regulation by prenatal testosterone excess in a sheep model of PCOS. Mol Cell Endocrinol 2021; 523:111137. [PMID: 33359827 PMCID: PMC7854529 DOI: 10.1016/j.mce.2020.111137] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 11/16/2020] [Accepted: 12/14/2020] [Indexed: 02/08/2023]
Abstract
Prenatal testosterone (T)-treated female sheep manifest adipose depot-specific disruptions in inflammatory/oxidative state, adipocyte differentiation and thermogenic adipocyte distribution. The objective of this study was to identify common and divergent gene pathways underlying prenatal T excess-induced adipose depot-specific disruptions. RNA sequencing and network analyses were undertaken with visceral (VAT), subcutaneous (SAT), epicardiac (ECAT) and perirenal (PRAT) adipose tissues from control and prenatal T-treated (100 mg T propionate twice a week from days 30-90 of gestation) female sheep at 21 months of age. Increased expression of adiposity and inflammation-related genes in VAT and genes that promote differentiation of white adipocytes in SAT were congruous with their metabolic roles with SAT favoring uptake/storage of free fatty acids and triglycerides and VAT favoring higher rate of fatty acid turnover and lipolysis. Selective upregulation of cardiac muscle and renoprotection genes in ECAT and PRAT respectively are suggestive of protective paracrine actions. Expression profile in prenatal T-treated sheep paralleled depot-specific dysfunctions with increased proinflammatory genes in VAT, reduced adipocyte differentiation genes in VAT and SAT and increased vascular related gene expression in PRAT. The high expression of genes involved in cardiomyocyte function in ECAT is suggestive of cardioprotective function being maintained to overcome the prenatal T-induced cardiac dysfunction and hypertension. These findings coupled with changes in gene pathways and networks involved in chromatin modification, extracellular matrix, immune and mitochondrial function, and endoplasmic reticulum to Golgi transport suggest that dysregulation in gene expression underlie prenatal T-treatment induced functional differences among adipose depots and manifestation of metabolic dysfunction.
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Affiliation(s)
- John Dou
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | | | | | - Kelly M Bakulski
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI, USA.
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Kim DH, Kim YR, Bang E, Ha S, Noh SG, Kim BM, Jeong SH, Jung HJ, Lee JY, Chung HY. Mechanism of Lipid Accumulation through PAR2 Signaling in Diabetic Male Mice. Endocrinol Metab (Seoul) 2021; 36:171-184. [PMID: 33677938 PMCID: PMC7937841 DOI: 10.3803/enm.2020.850] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 01/04/2021] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Protease-activated protein-2 (PAR2) has been reported to regulate hepatic insulin resistance condition in type 2 diabetes mice. However, the mechanism of lipid metabolism through PAR2 in obesity mice have not yet been examined. In liver, Forkhead box O1 (FoxO1) activity induces peroxisome proliferator-activated receptor γ (PPARγ), leading to accumulation of lipids and hyperlipidemia. Hyperlipidemia significantly influence hepatic steatoses, but the mechanisms underlying PAR2 signaling are complex and have not yet been elucidated. METHODS To examine the modulatory action of FoxO1 and its altered interaction with PPARγ, we utilized db/db mice and PAR2-knockout (KO) mice administered with high-fat diet (HFD). RESULTS Here, we demonstrated that PAR2 was overexpressed and regulated downstream gene expressions in db/db but not in db+ mice. The interaction between PAR2/β-arrestin and Akt was also greater in db/db mice. The Akt inhibition increased FoxO1 activity and subsequently PPARγ gene in the livers that led to hepatic lipid accumulation. Our data showed that FoxO1 was negatively controlled by Akt signaling and consequently, the activity of a major lipogenesis-associated transcription factors such as PPARγ increased, leading to hepatic lipid accumulation through the PAR2 pathway under hyperglycemic conditions in mice. Furthermore, the association between PPARγ and FoxO1 was increased in hepatic steatosis condition in db/db mice. However, HFD-fed PAR2-KO mice showed suppressed FoxO1-induced hepatic lipid accumulation compared with HFD-fed control groups. CONCLUSION Collectively, our results provide evidence that the interaction of FoxO1 with PPARγ promotes hepatic steatosis in mice. This might be due to defects in PAR2/β-arrestin-mediated Akt signaling in diabetic and HFD-fed mice.
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Affiliation(s)
- Dae Hyun Kim
- Department of Pharmacy, College of Pharmacy, Pusan National University, Busan, Korea
| | - Ye Ra Kim
- Department of Pharmacy, College of Pharmacy, Pusan National University, Busan, Korea
| | - EunJin Bang
- Department of Pharmacy, College of Pharmacy, Pusan National University, Busan, Korea
| | - Sugyeong Ha
- Department of Pharmacy, College of Pharmacy, Pusan National University, Busan, Korea
| | - Sang Gyun Noh
- Department of Pharmacy, College of Pharmacy, Pusan National University, Busan, Korea
| | - Byeong Moo Kim
- Department of Pharmacy, College of Pharmacy, Pusan National University, Busan, Korea
| | - Seong Ho Jeong
- Department of Pharmacy, College of Pharmacy, Pusan National University, Busan, Korea
| | - Hee Jin Jung
- Department of Pharmacy, College of Pharmacy, Pusan National University, Busan, Korea
| | - Ji Young Lee
- Department of Pharmacy, College of Pharmacy, Pusan National University, Busan, Korea
| | - Hae Young Chung
- Department of Pharmacy, College of Pharmacy, Pusan National University, Busan, Korea
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Gonçalves DA, Ribeiro V, Gualberto A, Peres F, Luconi M, Gameiro J. COVID-19 and Obesity: An Epidemiologic Analysis of the Brazilian Data. Int J Endocrinol 2021; 2021:6667135. [PMID: 34040642 PMCID: PMC8121602 DOI: 10.1155/2021/6667135] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 03/03/2021] [Accepted: 04/22/2021] [Indexed: 12/20/2022] Open
Abstract
Brazil has the second highest number of deaths due to COVID-19. Obesity has been associated with an important role in disease development and a worse prognosis. We aimed to explore epidemiological data from Brazil, discussing the potential relationships between obesity and COVID-19 severity in this country. We used a public database made available by the Ministry of Health of Brazil (182700 patients diagnosed with COVID-19). Descriptive statistics were used to characterize our database. Continuous data were expressed as median and analyzed by the nonparametric tests Mann-Whitney or one-sample Wilcoxon. The frequencies of categorical variables have been analyzed by chi-square tests of independence or goodness-of-fit. Among the number of deaths, 74% of patients were 60 years of age or older. Patients with obesity who died of COVID-19 were younger (59 years (IQR = 23)) than those without obesity (71 years (IQR = 20), P < 0.001, and η 2 = 0.0424). Women with obesity who died of COVID-19 were older than men (55 years (IQR = 25) vs. 50 (IQR = 22), P < 0.001, and η 2 = 0.0263). Furthermore, obesity increases the chances of needing intensive care unit (OR: 1.783, CI: 95%, and P < 0.001), needing ventilatory support (OR: 1.537, CI: 95%, and P < 0.001 and OR: 2.302, CI: 95%, and P < 0.001, for noninvasive and invasive, respectively), and death (OR: 1.411, CI: 95%, and P < 0.001) of patients hospitalized with COVID-19. Our analysis supports obesity as a significant risk factor for the development of more severe forms of COVID-19. The present study can direct a more effective prevention campaign and appropriate management of subjects with obesity.
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Affiliation(s)
- Diego Assis Gonçalves
- Department of Parasitology, Microbiology and Immunology, Federal University of Juiz de Fora, Juiz de Fora, Brazil
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Florence, Florence, Italy
| | - Victória Ribeiro
- Department of Parasitology, Microbiology and Immunology, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Ana Gualberto
- Department of Parasitology, Microbiology and Immunology, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Fernanda Peres
- Department of Pharmacology, Federal University of São Paulo, São Paulo, Brazil
| | - Michaela Luconi
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Florence, Florence, Italy
| | - Jacy Gameiro
- Department of Parasitology, Microbiology and Immunology, Federal University of Juiz de Fora, Juiz de Fora, Brazil
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Montt-Guevara MM, Finiguerra M, Marzi I, Fidecicchi T, Ferrari A, Genazzani AD, Simoncini T. D-Chiro-Inositol Regulates Insulin Signaling in Human Adipocytes. Front Endocrinol (Lausanne) 2021; 12:660815. [PMID: 33859622 PMCID: PMC8042392 DOI: 10.3389/fendo.2021.660815] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 03/08/2021] [Indexed: 11/28/2022] Open
Abstract
D-Chiro-Inositol (D-Chiro-Ins) is a secondary messenger in the insulin signaling pathway. D-Chiro-Ins modulates insulin secretion, the mitochondrial respiratory chain, and glycogen storage. Due to these actions D-Chiro-Ins has been proposed to correct defective insulin function in a variety of conditions characterized by metabolic dysfunction, such as polycystic ovary syndrome (PCOS), obesity, gestational diabetes and fat accumulation at menopause. Since it is unclear whether D-Chiro-Ins directly acts on adipocytes, we aimed to study D-Chiro-Ins's actions on adipocyte viability, proliferation, differentiation, and insulin-related protein expression using a human adipocyte cell line derived from Simpson-Golabi-Behmel Syndrome (SGBS) which fully differentiates to mature adipocytes. Throughout differentiation, cells were treated with D-Chiro-Ins, 17β-estradiol (E2) or Insulin. Cell viability and proliferation were not affected by D-Chiro-Ins, then D-Chiro-Ins promoted cell differentiation only during the final days of the process, while E2 enhanced it from the first phases. D-Chiro-Ins stimulated lipid storage and the production of big lipid droplets, thus reducing the content of free fatty acids. We also found that D-Chiro-Ins, either alone or in combination with insulin and E2 increased the expression and activation of insulin receptor substrate-1 (IRS1) and glucose transporter type 4 (GLUT4). In conclusion, this work shows that D-Chiro-Ins plays a direct role in the differentiation and in the function of human adipocytes, where it synergizes with insulin and estrogen through the recruitment of signal transduction pathways involved in lipid and glucose storage. These findings give clear insights to better understand the actions of D-Chiro-Ins on fat metabolism in women in physiology and in a variety of diseases.
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Affiliation(s)
- Maria Magdalena Montt-Guevara
- Molecular and Cellular Gynecological Endocrinology Laboratory (MCGEL), Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Michele Finiguerra
- Molecular and Cellular Gynecological Endocrinology Laboratory (MCGEL), Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Ilaria Marzi
- Molecular and Cellular Gynecological Endocrinology Laboratory (MCGEL), Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Tiziana Fidecicchi
- Molecular and Cellular Gynecological Endocrinology Laboratory (MCGEL), Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Amerigo Ferrari
- Molecular and Cellular Gynecological Endocrinology Laboratory (MCGEL), Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Alessandro D. Genazzani
- Gynecological Endocrinology Center, Department of Obstetrics and Gynecology, University of Modena and Reggio Emilia, Modena, Italy
| | - Tommaso Simoncini
- Molecular and Cellular Gynecological Endocrinology Laboratory (MCGEL), Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
- *Correspondence: Tommaso Simoncini,
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Kaikaew K, Grefhorst A, Visser JA. Sex Differences in Brown Adipose Tissue Function: Sex Hormones, Glucocorticoids, and Their Crosstalk. Front Endocrinol (Lausanne) 2021; 12:652444. [PMID: 33927694 PMCID: PMC8078866 DOI: 10.3389/fendo.2021.652444] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 03/23/2021] [Indexed: 12/12/2022] Open
Abstract
Excessive fat accumulation in the body causes overweight and obesity. To date, research has confirmed that there are two types of adipose tissue with opposing functions: lipid-storing white adipose tissue (WAT) and lipid-burning brown adipose tissue (BAT). After the rediscovery of the presence of metabolically active BAT in adults, BAT has received increasing attention especially since activation of BAT is considered a promising way to combat obesity and associated comorbidities. It has become clear that energy homeostasis differs between the sexes, which has a significant impact on the development of pathological conditions such as type 2 diabetes. Sex differences in BAT activity may contribute to this and, therefore, it is important to address the underlying mechanisms that contribute to sex differences in BAT activity. In this review, we discuss the role of sex hormones in the regulation of BAT activity under physiological and some pathological conditions. Given the increasing number of studies suggesting a crosstalk between sex hormones and the hypothalamic-pituitary-adrenal axis in metabolism, we also discuss this crosstalk in relation to sex differences in BAT activity.
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Affiliation(s)
- Kasiphak Kaikaew
- Department of Physiology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Aldo Grefhorst
- Department of Experimental Vascular Medicine, Amsterdam University Medical Centers, Location AMC, Amsterdam, Netherlands
| | - Jenny A. Visser
- Department of Internal Medicine, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
- *Correspondence: Jenny A. Visser,
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42
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Le Magueresse-Battistoni B. Adipose Tissue and Endocrine-Disrupting Chemicals: Does Sex Matter? INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17249403. [PMID: 33333918 PMCID: PMC7765367 DOI: 10.3390/ijerph17249403] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 12/10/2020] [Accepted: 12/14/2020] [Indexed: 12/21/2022]
Abstract
Obesity and metabolic-related diseases, among which diabetes, are prominent public health challenges of the 21st century. It is now well acknowledged that pollutants are a part of the equation, especially endocrine-disrupting chemicals (EDCs) that interfere with the hormonal aspect. The aim of the review is to focus on adipose tissue, a central regulator of energy balance and metabolic homeostasis, and to highlight the significant differences in the endocrine and metabolic aspects of adipose tissue between males and females which likely underlie the differences of the response to exposure to EDCs between the sexes. Moreover, the study also presents an overview of several mechanisms of action by which pollutants could cause adipose tissue dysfunction. Indeed, a better understanding of the mechanism by which environmental chemicals target adipose tissue and cause metabolic disturbances, and how these mechanisms interact and sex specificities are essential for developing mitigating and sex-specific strategies against metabolic diseases of chemical origin. In particular, considering that a scenario without pollutant exposure is not a realistic option in our current societies, attenuating the deleterious effects of exposure to pollutants by acting on the gut-adipose tissue axis may constitute a new direction of research.
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Affiliation(s)
- Brigitte Le Magueresse-Battistoni
- Univ-Lyon, CarMeN Laboratory, INSERM U1060, INRAé U1397, Université Claude Bernard Lyon1, F-69310 Pierre-Bénite, France; ; Tel.: +33-(0)-426235919; Fax: +33-(0)-426235916
- CarMeN Laboratory, INSERM U1060, Hopital Lyon-Sud, Bâtiment CENS ELI-2D, 165 Chemin du Grand Revoyet, 69310 Pierre-Bénite, France
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43
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Liu F, He J, Wang H, Zhu D, Bi Y. Adipose Morphology: a Critical Factor in Regulation of Human Metabolic Diseases and Adipose Tissue Dysfunction. Obes Surg 2020; 30:5086-5100. [PMID: 33021706 PMCID: PMC7719100 DOI: 10.1007/s11695-020-04983-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 09/12/2020] [Accepted: 09/15/2020] [Indexed: 12/30/2022]
Abstract
Emerging evidence highlights that dysfunction of adipose tissue contributes to impaired insulin sensitivity and systemic metabolic deterioration in obese state. Of note, adipocyte hypertrophy serves as a critical event which associates closely with adipose dysfunction. An increase in cell size exacerbates hypoxia and inflammation as well as excessive collagen deposition, finally leading to metabolic dysregulation. Specific mechanisms of adipocyte hypertrophy include dysregulated differentiation and maturation of preadipocytes, enlargement of lipid droplets, and abnormal adipocyte osmolarity sensors. Also, weight loss therapies exert profound influence on adipocyte size. Here, we summarize the critical role of adipocyte hypertrophy in the development of metabolic disturbances. Future studies are required to establish a standard criterion of size measurement to better clarify the impact of adipocyte hypertrophy on changes in metabolic homeostasis.
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Affiliation(s)
- Fangcen Liu
- Department of Endocrinology, Nanjing Drum Tower Hospital Clinical College, Nanjing Medical University, Nanjing, China
| | - Jielei He
- Department of Endocrinology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Hongdong Wang
- Department of Endocrinology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Dalong Zhu
- Department of Endocrinology, Nanjing Drum Tower Hospital Clinical College, Nanjing Medical University, Nanjing, China
- Department of Endocrinology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Yan Bi
- Department of Endocrinology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China.
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Sreekantha S, Wang Y, Sakurai R, Liu J, Rehan VK. Maternal food restriction-induced intrauterine growth restriction in a rat model leads to sex-specific adipogenic programming. FASEB J 2020; 34:16073-16085. [PMID: 33047380 PMCID: PMC8121157 DOI: 10.1096/fj.202000985rr] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 09/23/2020] [Accepted: 09/28/2020] [Indexed: 11/11/2022]
Abstract
Intrauterine growth restriction (IUGR) leads to offspring obesity. In a maternal food restriction (MFR) during pregnancy-related IUGR rat model, bone marrow stem cells showed enhanced adipogenic programming; however, the effect of IUGR on white adipose tissue (WAT) progenitors is unknown. Here, by mRNA and functional profiling, we determined sex-specific adipogenic programming of WAT progenitors isolated from pups on the postnatal day (PND) 1 and 21. On PND1, PPARγ and Pref-1 expression was significantly downregulated in preadipocytes of both MFR males and females; however, at PND21, preadipocytes of MFR males showed upregulation in these genes. Even following adipogenic induction, both male and female MFR adipocytes exhibited lower PPARγ, ADRP, and adiponectin levels at PND1; however, at PND21 MFR male adipocytes showed an upward trend in the expression of these genes. An adipogenesis-specific RT-PCR array showed that male MFR adipocytes were programmed to exhibit stronger adipogenic propensity than females. Last, serum sex hormone and adipocyte estrogen/testosterone receptor expression profiles provide preliminary insights into the possible mechanism underlying sex-specific adipogenic programming in the IUGR offspring. In summary, IUGR programs WAT preadipocytes to greater adipogenic potential in males. Although the altered adipogenic programming following MFR was detectable at PND1, the changes were more pronounced at PND21, suggesting a potential role of postnatal nutrition in facilitating the sex-specific adipogenic programming in the IUGR offspring.
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Grants
- R21 HL107118 NHLBI NIH HHS
- R21 HD071731 NICHD NIH HHS
- HD071731 HHS | NIH | National Heart, Lung, and Blood Institute (NHLBI)
- R01 HL151769 NHLBI NIH HHS
- HD058948 HHS | NIH | National Heart, Lung, and Blood Institute (NHLBI)
- HL152915 HHS | NIH | National Heart, Lung, and Blood Institute (NHLBI)
- R41 HL152915 NHLBI NIH HHS
- R03 HD058948 NICHD NIH HHS
- HD127237 HHS | NIH | National Heart, Lung, and Blood Institute (NHLBI)
- R01 HL127237 NHLBI NIH HHS
- HL107118 HHS | NIH | National Heart, Lung, and Blood Institute (NHLBI)
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Affiliation(s)
- Sreevidya Sreekantha
- Department of Pediatrics, Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center, Torrance, CA, USA
- David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Ying Wang
- Department of Pediatrics, Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center, Torrance, CA, USA
- David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Reiko Sakurai
- Department of Pediatrics, Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center, Torrance, CA, USA
- David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Jie Liu
- Department of Pediatrics, Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center, Torrance, CA, USA
- David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Virender K Rehan
- Department of Pediatrics, Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center, Torrance, CA, USA
- David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
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45
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Manti M, Pui HP, Edström S, Risal S, Lu H, Lindgren E, Ohlsson C, Jerlhag E, Benrick A, Deng Q, Stener-Victorin E. Excess of ovarian nerve growth factor impairs embryonic development and causes reproductive and metabolic dysfunction in adult female mice. FASEB J 2020; 34:14440-14457. [PMID: 32892421 DOI: 10.1096/fj.202001060r] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 08/05/2020] [Accepted: 08/13/2020] [Indexed: 12/30/2022]
Abstract
Nerve growth factor (NGF) is critical for the development and maintenance of the peripheral sympathetic neurons. NGF is also involved in the ovarian sympathetic innervation and in the development and maintenance of folliculogenesis. Women with the endocrine disorder, polycystic ovary syndrome (PCOS), have an increased sympathetic nerve activity and increased ovarian NGF levels. The role of ovarian NGF excess in the PCOS pathophysiology and in the PCOS-related features is unclear. Here, using transgenic mice overexpressesing NGF in the ovarian theca cells (17NF mice), we assessed the female embryonic development, and the reproductive and metabolic profile in adult females. Ovarian NGF excess caused growth restriction in the female fetuses, and a delayed gonocyte and primary oocyte maturation. In adulthood, the 17NF mice displayed irregular estrous cycles and altered ovarian expression of steroidogenic and epigenetic markers. They also exhibited an increased sympathetic output with increased circulating dopamine, and metabolic dysfunction reflected by aberrant adipose tissue morphology and function, impaired glucose metabolism, decreased energy expenditure, and hepatic steatosis. These findings indicate that ovarian NGF excess leads to adverse fetal development and to reproductive and metabolic complications in adulthood, mirroring common features of PCOS. This work provides evidence that NGF excess may be implicated in the PCOS pathophysiology.
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Affiliation(s)
- Maria Manti
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Han-Pin Pui
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden.,Center for Molecular Medicine, Karolinska University Hospital, Stockholm, Sweden
| | - Sonja Edström
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Sanjiv Risal
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Haojiang Lu
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Eva Lindgren
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Claes Ohlsson
- Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Elisabet Jerlhag
- Department of Pharmacology, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Anna Benrick
- Department of Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,School of Health and Education, University of Skövde, Skövde, Sweden
| | - Qiaolin Deng
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden.,Center for Molecular Medicine, Karolinska University Hospital, Stockholm, Sweden
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46
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Dou JF, Puttabyatappa M, Padmanabhan V, Bakulski KM. Developmental programming: Transcriptional regulation of visceral and subcutaneous adipose by prenatal bisphenol-A in female sheep. CHEMOSPHERE 2020; 255:127000. [PMID: 32417515 PMCID: PMC7418632 DOI: 10.1016/j.chemosphere.2020.127000] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Revised: 05/04/2020] [Accepted: 05/05/2020] [Indexed: 05/15/2023]
Abstract
BACKGROUND Bisphenol-A (BPA) exposure is widespread and early life exposure is associated with metabolic syndrome. While visceral adipose tissue (VAT) and subcutaneous adipose tissue (SAT) are implicated in the development of metabolic syndrome, the adipose depot-specific effects of prenatal BPA treatment are poorly understood. OBJECTIVE To determine the impact of prenatal BPA exposure on genome-wide gene expression of VAT and SAT depots. METHODS RNA sequencing was performed on SAT and VAT from 21-month old control and prenatal BPA-treated female sheep. Gene expression and pathway differences between SAT and VAT depots with or without prenatal BPA-treatment and the effect of prenatal BPA treatment on each depot were tested. RESULTS There were 179 differentially expressed genes (padjusted < 0.05, log2-fold change >2.5) between SAT and VAT. Development and immune response pathways were upregulated in SAT, while metabolic pathways were upregulated in VAT. These adipose depot-specific genes and pathways were consistent with prenatal BPA-treatment. In SAT, BPA-treatment resulted in differential expression of 108 genes (78% upregulated with BPA) and altered pathways (immune response downregulated, RNA processing upregulated). In contrast in VAT, BPA-treatment differentially expressed 4 genes and upregulated chromatin and RNA processing pathways. CONCLUSION Prenatal BPA-treatment induces adult depot-specific alterations in RNA expression in inflammation, RNA processing, and chromatin pathways, reflecting the diverse roles of SAT and VAT in regulating lipid storage and insulin sensitivity. These adipose tissue transcriptional dysregulations may contribute to the metabolic disorders observed in prenatal BPA-treated female sheep.
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Affiliation(s)
- John F Dou
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | | | | | - Kelly M Bakulski
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI, USA.
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47
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Adipose tissue of female Wistar rats respond to Ilex paraguariensis treatment after ovariectomy surgery. J Tradit Complement Med 2020; 11:238-248. [PMID: 34012870 PMCID: PMC8116720 DOI: 10.1016/j.jtcme.2020.07.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 07/15/2020] [Accepted: 07/16/2020] [Indexed: 12/13/2022] Open
Abstract
Background and aim Metabolic disturbances are known for their increasing epidemiological importance. Ilex paraguariensis presents a potential option for mitigating lipid metabolism imbalance. However, most of the literature to date has not considered sex bias. This study aimed to evaluate the effect of Ilex paraguariensis on the metabolism of different adipose tissue depots in males and females. Experimental procedure After ovariectomy, female Wistar rats received daily treatment with the extract (1 g/kg) for forty-five days. Biochemical serum parameters and tissue metabolism were evaluated. Oxidation, lipogenesis and lipolysis were evaluated in brown, white visceral, retroperitoneal and gonadal adipose tissues. Results and conclusion The results showed that treatment with the extract led to a reduced weight gain in ovariectomised females in comparison to control. The triglyceride concentration was decreased in males. Glucose oxidation and lipid synthesis in visceral and retroperitoneal adipose tissues were restored in ovariectomised females after treatment. The response to epinephrine decreased in visceral adipose tissue of control males; however, lipolysis in females did not respond to ovariectomy or treatment. These findings highlight the enormous potential effects of I. paraguariensis on lipid metabolism, modulating lipogenic pathways in females and lipolytic pathways in males. Furthermore, the sex approach applied in this study contributes to more effective screening of the effects of I. paraguariensis bioactive substances. Ilex paraguariensis reduced weight gain of ovariectomy females to control levels Serum triglycerides decreased in male and estrogen-deficient female after treatment Treatment restored glucose oxidation and lipogenesis of estrogen-deficient females I. paraguariensis decreased lipolysis response in visceral adipose tissue of males
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48
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Abstract
Regional adipose tissue distribution differs between men and women. Differences in the accumulation of adipose tissue as well as the regulation of secretion of a number of products from adipose tissue are under the control of sex steroids, which act through a wide variety of mechanisms, both direct and indirect, to tailor metabolism to the unique needs of each sex. A fuller understanding of sex-based differences in adipose tissue function may help with tailored strategies for disease prevention and treatment and provide insights into fundamental differences in the processes that regulate nutrient homeostasis and body weight.
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Affiliation(s)
- Kathleen M Gavin
- Division of Geriatric Medicine, Department of Medicine, Eastern Colorado VA Geriatric, Research, Education, and Clinical Center (GRECC), University of Colorado Anschutz Medical Campus, 12631 East 17th Avenue, Aurora, CO 80045, USA
| | - Daniel H Bessesen
- Division of Endocrinology, Metabolism, and Diabetes, Anschutz Health and Wellness Center, University of Colorado, School of Medicine, 12348 East Montview Boulevard, Aurora, CO 80045, USA.
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49
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McBride RB, Fei K, Rothstein JH, Alexeeff SE, Song X, Sakoda LC, McGuire V, Achacoso N, Acton L, Liang RY, Lipson JA, Yaffe MJ, Rubin DL, Whittemore AS, Habel LA, Sieh W. Alcohol and Tobacco Use in Relation to Mammographic Density in 23,456 Women. Cancer Epidemiol Biomarkers Prev 2020; 29:1039-1048. [PMID: 32066618 PMCID: PMC7196522 DOI: 10.1158/1055-9965.epi-19-0348] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Revised: 07/27/2019] [Accepted: 02/07/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Percent density (PD) is a strong risk factor for breast cancer that is potentially modifiable by lifestyle factors. PD is a composite of the dense (DA) and nondense (NDA) areas of a mammogram, representing predominantly fibroglandular or fatty tissues, respectively. Alcohol and tobacco use have been associated with increased breast cancer risk. However, their effects on mammographic density (MD) phenotypes are poorly understood. METHODS We examined associations of alcohol and tobacco use with PD, DA, and NDA in a population-based cohort of 23,456 women screened using full-field digital mammography machines manufactured by Hologic or General Electric. MD was measured using Cumulus. Machine-specific effects were estimated using linear regression, and combined using random effects meta-analysis. RESULTS Alcohol use was positively associated with PD (P trend = 0.01), unassociated with DA (P trend = 0.23), and inversely associated with NDA (P trend = 0.02) adjusting for age, body mass index, reproductive factors, physical activity, and family history of breast cancer. In contrast, tobacco use was inversely associated with PD (P trend = 0.0008), unassociated with DA (P trend = 0.93), and positively associated with NDA (P trend<0.0001). These trends were stronger in normal and overweight women than in obese women. CONCLUSIONS These findings suggest that associations of alcohol and tobacco use with PD result more from their associations with NDA than DA. IMPACT PD and NDA may mediate the association of alcohol drinking, but not tobacco smoking, with increased breast cancer risk. Further studies are needed to elucidate the modifiable lifestyle factors that influence breast tissue composition, and the important role of the fatty tissues on breast health.
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Affiliation(s)
- Russell B McBride
- Institute for Translational Epidemiology, Icahn School of Medicine at Mount Sinai, New York, New York
- Department of Pathology, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Kezhen Fei
- Department of Population Health Science and Policy, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Joseph H Rothstein
- Department of Population Health Science and Policy, Icahn School of Medicine at Mount Sinai, New York, New York
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Stacey E Alexeeff
- Division of Research, Kaiser Permanente Northern California, Oakland, California
| | - Xiaoyu Song
- Department of Population Health Science and Policy, Icahn School of Medicine at Mount Sinai, New York, New York
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Lori C Sakoda
- Division of Research, Kaiser Permanente Northern California, Oakland, California
| | - Valerie McGuire
- Department of Epidemiology and Population Health, Stanford University School of Medicine, Stanford, California
| | - Ninah Achacoso
- Division of Research, Kaiser Permanente Northern California, Oakland, California
| | - Luana Acton
- Division of Research, Kaiser Permanente Northern California, Oakland, California
| | - Rhea Y Liang
- Department of Radiology, Stanford University School of Medicine, Stanford, California
| | - Jafi A Lipson
- Department of Radiology, Stanford University School of Medicine, Stanford, California
| | - Martin J Yaffe
- Departments of Medical Biophysics and Medical Imaging, University of Toronto, Toronto, Ontario, Canada
| | - Daniel L Rubin
- Department of Radiology, Stanford University School of Medicine, Stanford, California
- Department of Biomedical Data Science, Stanford University School of Medicine, Stanford, California
| | - Alice S Whittemore
- Department of Epidemiology and Population Health, Stanford University School of Medicine, Stanford, California
- Department of Biomedical Data Science, Stanford University School of Medicine, Stanford, California
| | - Laurel A Habel
- Division of Research, Kaiser Permanente Northern California, Oakland, California
| | - Weiva Sieh
- Institute for Translational Epidemiology, Icahn School of Medicine at Mount Sinai, New York, New York.
- Department of Population Health Science and Policy, Icahn School of Medicine at Mount Sinai, New York, New York
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, New York
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York
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50
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Kim JY, Kim MH, Lee HJ, Huh JW, Lee SR, Lee HS, Lee DS. Peroxiredoxin 4 inhibits insulin-induced adipogenesis through regulation of ER stress in 3T3-L1 cells. Mol Cell Biochem 2020; 468:97-109. [PMID: 32185676 DOI: 10.1007/s11010-020-03714-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 03/06/2020] [Indexed: 02/06/2023]
Abstract
Obesity was originally considered a disease endemic to developed countries but has since emerged as a global health problem. Obesity is characterized by abnormal or excessive lipid accumulation (World Health Organization, WHO) resulting from pre-adipocyte differentiation (adipogenesis). The endoplasmic reticulum (ER) produces proteins and cholesterol and shuttles these compounds to their target sites. Many studies have implicated ER stress, indicative of ER dysfunction, in adipogenesis. Reactive oxygen species (ROS) are also known to be involved in pre-adipocyte differentiation. Prx4 specific to the ER lumen exhibits ROS scavenging activity, and we thereby focused on ER-specific Prx4 in tracking changes in adipocyte differentiation and lipid accumulation. Overexpression of Prx4 reduced ER stress and suppressed lipid accumulation by regulating adipogenic gene expression during adipogenesis. Our results demonstrate that Prx4 inhibits ER stress, lowers ROS levels, and attenuates pre-adipocyte differentiation. These findings suggested enhancing the activity of Prx4 may be helpful in the treatment of obesity; the data also support the development of new therapeutic approaches to obesity and obesity-related metabolic disorders.
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Affiliation(s)
- Jae Yeop Kim
- School of Life Sciences, BK21 Plus KNU Creative Bioresearch Group, Kyungpook National University, Daegu, Republic of Korea.,School of Life Sciences & Biotechnology, College of Natural Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - Mi Hye Kim
- School of Life Sciences, BK21 Plus KNU Creative Bioresearch Group, Kyungpook National University, Daegu, Republic of Korea.,School of Life Sciences & Biotechnology, College of Natural Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - Hong Jun Lee
- College of Medicine, Chungbuk National University, Chungbuk, Republic of Korea.,Research Institute, E-Biogen Inc, Seoul, Korea
| | - Jae-Won Huh
- National Primate Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Cheongju, Republic of Korea
| | - Sang-Rae Lee
- National Primate Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Cheongju, Republic of Korea
| | - Hyun-Shik Lee
- School of Life Sciences, BK21 Plus KNU Creative Bioresearch Group, Kyungpook National University, Daegu, Republic of Korea.,School of Life Sciences & Biotechnology, College of Natural Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - Dong-Seok Lee
- School of Life Sciences, BK21 Plus KNU Creative Bioresearch Group, Kyungpook National University, Daegu, Republic of Korea. .,School of Life Sciences & Biotechnology, College of Natural Sciences, Kyungpook National University, Daegu, Republic of Korea.
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