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Tarçin G, Bayramoğlu E, Güneş Kaya D, Karakaş H, Demirbaş KC, Turan H, Evliyaoğlu O. The role of body composition and appetite-regulating hormones in idiopathic central precocious puberty and their changes during GnRH analog therapy. J Endocrinol Invest 2024:10.1007/s40618-024-02413-3. [PMID: 38896175 DOI: 10.1007/s40618-024-02413-3] [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: 04/02/2024] [Accepted: 06/10/2024] [Indexed: 06/21/2024]
Abstract
PURPOSE It was aimed to compare circulating levels of ghrelin, leptin, peptide YY (PYY), and neuropeptide (NPY) between girls with idiopathic central precocious puberty (ICPP) and prepubertal girls, as well as to evaluate alterations in these hormone levels and body composition during leuprolide acetate treatment in girls with ICPP. METHODS This prospective study was conducted on girls with isolated premature thelarche (IPT), girls with ICPP, and age-matched prepubertal controls. Anthropometric measurements, body composition analysis and appetite-regulating hormone level measurements were performed in each group and also at the 6th and 12th months of the leuprolide acetate treatment for the girls with ICPP. RESULTS Seventy-three girls participated in the study (24 girls with ICPP, 28 with IPT, and 21 prepubertal controls). No significant differences were observed in ghrelin, leptin, PYY, and NPY levels among the three groups. Leuprolide acetate treatment resulted in increased leptin, decreased PYY and NPY levels, and no significant changes in ghrelin. Despite no significant change in body mass index standard deviation score (BMI SDS), body fat percentage increased during treatment. CONCLUSION While appetite-regulating hormones do not seem to directly contribute to precocious puberty pathogenesis, puberty blockade was shown to lead to altered levels of these hormones along with changes in body composition.
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Affiliation(s)
- G Tarçin
- Cerrahpaşa Faculty of Medicine, Department of Pediatric Endocrinology, Istanbul University-Cerrahpaşa, Istanbul, Turkey.
| | - E Bayramoğlu
- Cerrahpaşa Faculty of Medicine, Department of Pediatric Endocrinology, Istanbul University-Cerrahpaşa, Istanbul, Turkey
| | - D Güneş Kaya
- Cerrahpaşa Faculty of Medicine, Department of Pediatrics, Istanbul University-Cerrahpaşa, Istanbul, Turkey
| | - H Karakaş
- Cerrahpaşa Faculty of Medicine, Department of Pediatric Endocrinology, Istanbul University-Cerrahpaşa, Istanbul, Turkey
| | - K C Demirbaş
- Cerrahpaşa Faculty of Medicine, Department of Pediatrics, Istanbul University-Cerrahpaşa, Istanbul, Turkey
| | - H Turan
- Cerrahpaşa Faculty of Medicine, Department of Pediatric Endocrinology, Istanbul University-Cerrahpaşa, Istanbul, Turkey
| | - O Evliyaoğlu
- Cerrahpaşa Faculty of Medicine, Department of Pediatric Endocrinology, Istanbul University-Cerrahpaşa, Istanbul, Turkey
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2
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Caviness PC, Lazarenko OP, Blackburn ML, Chen JF, Randolph CE, Zabaleta J, Zhan F, Chen JR. Phenolic acids prevent sex-steroid deficiency-induced bone loss and bone marrow adipogenesis in mice. J Nutr Biochem 2024; 127:109601. [PMID: 38367948 DOI: 10.1016/j.jnutbio.2024.109601] [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] [Received: 09/20/2023] [Revised: 01/19/2024] [Accepted: 02/12/2024] [Indexed: 02/19/2024]
Abstract
Phenolic acids, such as hippuric acid (HA) and 3-(3-hydroxyphenyl) propionic acid (3-3-PPA), can be produced from microbiome digestion of polyphenols. Previously it was found that HA and 3-3-PPA facilitate bone formation and suppress bone resorption. However, the mechanism of action by which HA and 3-3-PPA protect bone from degeneration is currently unknown. In this report, we present that HA and 3-3-PPA suppression of bone resorption is able to ameliorate bone loss in an ovariectomy (OVX) osteopenic mouse model though not to the extent of Zoledronic acid (ZA). HA and 3-3-PPA treatments were shown to significantly decrease bone marrow adipocyte-like cell formation and inhibited gene expression of key adipogenesis regulator peroxisome proliferator activated receptor gamma (PPARγ) and lipoprotein lipase (Lpl) in bone from OVX mice. In addition, ChIP experiments showed that the association between PPARγ and Lpl promoter region in preadipocyte-like cells was significantly suppressed following HA or 3-3-PPA treatment. Contrasting HA and 3-3-PPA, ZA significantly increased TRAP activity in the area close to growth plate and significantly suppressed bone cell proliferation. These data suggest that phenolics acids such as HA or 3-3-PPA may prevent bone degeneration after OVX through suppression of inflammatory milieu in the bone.
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Affiliation(s)
- Perry C Caviness
- Arkansas Children's Nutrition Center, Little Rock, Arkansas 72205, USA; Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205, USA
| | - Oxana P Lazarenko
- Arkansas Children's Nutrition Center, Little Rock, Arkansas 72205, USA; Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205, USA
| | - Michael L Blackburn
- Arkansas Children's Nutrition Center, Little Rock, Arkansas 72205, USA; Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205, USA
| | - Jennifer F Chen
- Undergraduate Pre-Medical Program, University of Arkansas at Fayetteville, Fayetteville, Arkansas 72701, USA
| | - Christopher E Randolph
- Center for Translational Pediatric Research, Arkansas Children's Research Institute, Little Rock, Arkansas 72202, USA
| | - Jovanny Zabaleta
- Department of Interdisciplinary Oncology, Louisiana State University Health Sciences Center, New Orleans, Los Angeles 70112, USA
| | - Fenghuang Zhan
- Myeloma Center, Winthrop P. Rockefeller Cancer Institute, Department of Internal Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Jin-Ran Chen
- Arkansas Children's Nutrition Center, Little Rock, Arkansas 72205, USA; Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205, USA.
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3
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Cleland NRW, Potter GJ, Buck C, Quang D, Oldham D, Neal M, Saviola A, Niemeyer CS, Dobrinskikh E, Bruce KD. Altered metabolism and DAM-signatures in female brains and microglia with aging. Brain Res 2024; 1829:148772. [PMID: 38244754 DOI: 10.1016/j.brainres.2024.148772] [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] [Received: 07/13/2023] [Revised: 12/21/2023] [Accepted: 01/15/2024] [Indexed: 01/22/2024]
Abstract
Despite Alzheimer's disease (AD) disproportionately affecting women, the mechanisms remain elusive. In AD, microglia undergo 'metabolic reprogramming', which contributes to microglial dysfunction and AD pathology. However, how sex and age contribute to metabolic reprogramming in microglia is understudied. Here, we use metabolic imaging, transcriptomics, and metabolic assays to probe age- and sex-associated changes in brain and microglial metabolism. Glycolytic and oxidative metabolism in the whole brain was determined using Fluorescence Lifetime Imaging Microscopy (FLIM). Young female brains appeared less glycolytic than male brains, but with aging, the female brain became 'male-like.' Transcriptomic analysis revealed increased expression of disease-associated microglia (DAM) genes (e.g., ApoE, Trem2, LPL), and genes involved in glycolysis and oxidative metabolism in microglia from aged females compared to males. To determine whether estrogen can alter the expression of these genes, BV-2 microglia-like cell lines, which abundantly express DAM genes, were supplemented with 17β-estradiol (E2). E2 supplementation resulted in reduced expression of DAM genes, reduced lipid and cholesterol transport, and substrate-dependent changes in glycolysis and oxidative metabolism. Consistent with the notion that E2 may suppress DAM-associated factors, LPL activity was elevated in the brains of aged female mice. Similarly, DAM gene and protein expression was higher in monocyte-derived microglia-like (MDMi) cells derived from middle-aged females compared to age-matched males and was responsive to E2 supplementation. FLIM analysis of MDMi from young and middle-aged females revealed reduced oxidative metabolism and FAD+ with age. Overall, our findings show that altered metabolism defines age-associated changes in female microglia and suggest that estrogen may inhibit the expression and activity of DAM-associated factors, which may contribute to increased AD risk, especially in post-menopausal women.
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Affiliation(s)
- Nicholas R W Cleland
- Division of Endocrinology, Metabolism and Diabetes, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Garrett J Potter
- Division of Endocrinology, Metabolism and Diabetes, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Courtney Buck
- Division of Endocrinology, Metabolism and Diabetes, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Daphne Quang
- Division of Endocrinology, Metabolism and Diabetes, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Dean Oldham
- Division of Endocrinology, Metabolism and Diabetes, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Mikaela Neal
- Division of Endocrinology, Metabolism and Diabetes, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Anthony Saviola
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Christy S Niemeyer
- Department of Neurology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Evgenia Dobrinskikh
- Section of Neonatology, Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, USA
| | - Kimberley D Bruce
- Division of Endocrinology, Metabolism and Diabetes, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA.
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Moussaoui W, Lahmamssi FZ, Aynaou H, Salhi H, El Ouahabi H. Tamoxifen- and Triptorelin-Induced Major Hypertriglyceridemia: A Case Report. Cureus 2024; 16:e53779. [PMID: 38469007 PMCID: PMC10927164 DOI: 10.7759/cureus.53779] [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] [Accepted: 02/06/2024] [Indexed: 03/13/2024] Open
Abstract
Tamoxifen, a selective estrogen receptor modulator (SERM), can have harmful side effects, such as hypertriglyceridemia, which can lead to acute pancreatitis. Meanwhile, triptorelin is an analog of natural GnRH (GnRHa), which may cause a small but significant increase in cholesterol and triglyceride (TG) levels. We describe below the case of a patient with breast cancer treated with Patey's operation, chemo-radiotherapy, and then with tamoxifen and triptorelin. After an exposure period of three months, she presented major hypertriglyceridemia at 56 g/L, total cholesterol at 13 g/L, LDL-cholesterol (LDL-C) at 4 g/L, and HDL at 0.25 g/L. The patient's treatment was stopped by her oncologist. One month after starting an adapted diet and fenofibrate, her TG levels were reduced to 2 g/L. We could confirm from these results that tamoxifen and triptorelin certainly modify lipid metabolism, hence the interest in evaluating the benefit-risk balance and regularly monitoring the lipid profile in order to avoid any fatal complication.
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Affiliation(s)
- Widad Moussaoui
- Department of Endocrinology, Diabetology, Metabolic Diseases and Nutrition, Hassan II University Hospital, Fez, MAR
| | - Fatima Zahra Lahmamssi
- Department of Endocrinology, Diabetology, Metabolic Diseases and Nutrition, Hassan II University Hospital, Fez, MAR
| | - Hayat Aynaou
- Department of Endocrinology, Diabetology, Metabolic Diseases and Nutrition, Hassan II University Hospital, Fez, MAR
| | - Houda Salhi
- Department of Endocrinology, Diabetology, Metabolic Diseases and Nutrition, Hassan II University Hospital, Fez, MAR
| | - Hanan El Ouahabi
- Department of Endocrinology, Diabetology, Metabolic Diseases and Nutrition, Hassan II University Hospital, Fez, MAR
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Cleland NRW, Potter GJ, Buck C, Quang D, Oldham D, Neal M, Saviola A, Niemeyer CS, Dobrinskikh E, Bruce KD. Altered Metabolism and DAM-signatures in Female Brains and Microglia with Aging. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.28.569104. [PMID: 38076915 PMCID: PMC10705419 DOI: 10.1101/2023.11.28.569104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
Despite Alzheimer's disease (AD) disproportionately affecting women, the mechanisms remain elusive. In AD, microglia undergo 'metabolic reprogramming', which contributes to microglial dysfunction and AD pathology. However, how sex and age contribute to metabolic reprogramming in microglia is understudied. Here, we use metabolic imaging, transcriptomics, and metabolic assays to probe age-and sex-associated changes in brain and microglial metabolism. Glycolytic and oxidative metabolism in the whole brain was determined using Fluorescence Lifetime Imaging Microscopy (FLIM). Young female brains appeared less glycolytic than male brains, but with aging, the female brain became 'male-like.' Transcriptomic analysis revealed increased expression of disease-associated microglia (DAM) genes (e.g., ApoE, Trem2, LPL), and genes involved in glycolysis and oxidative metabolism in microglia from aged females compared to males. To determine whether estrogen can alter the expression of these genes, BV-2 microglia-like cell lines, which abundantly express DAM genes, were supplemented with 17β-estradiol (E2). E2 supplementation resulted in reduced expression of DAM genes, reduced lipid and cholesterol transport, and substrate-dependent changes in glycolysis and oxidative metabolism. Consistent with the notion that E2 may suppress DAM-associated factors, LPL activity was elevated in the brains of aged female mice. Similarly, DAM gene and protein expression was higher in monocyte-derived microglia-like (MDMi) cells derived from middle-aged females compared to age-matched males and was responsive to E2 supplementation. FLIM analysis of MDMi from young and middle-aged females revealed reduced oxidative metabolism and FAD+ with age. Overall, our findings show that altered metabolism defines age-associated changes in female microglia and suggest that estrogen may inhibit the expression and activity of DAM-associated factors, which may contribute to increased AD risk, especially in post-menopausal women.
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Affiliation(s)
- Nicholas R W Cleland
- Division of Endocrinology, Metabolism and Diabetes, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO USA
| | - Garrett J Potter
- Division of Endocrinology, Metabolism and Diabetes, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO USA
| | - Courtney Buck
- Division of Endocrinology, Metabolism and Diabetes, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO USA
| | - Daphne Quang
- Division of Endocrinology, Metabolism and Diabetes, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO USA
| | - Dean Oldham
- Division of Endocrinology, Metabolism and Diabetes, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO USA
| | - Mikaela Neal
- Division of Endocrinology, Metabolism and Diabetes, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO USA
| | - Anthony Saviola
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO USA
| | - Christy S. Niemeyer
- Department of Neurology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Evgenia Dobrinskikh
- Section of Neonatology, Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, USA
| | - Kimberley D. Bruce
- Division of Endocrinology, Metabolism and Diabetes, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO USA
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Donghia R, Schiano Di Cola R, Cesaro F, Vitale A, Lippolis G, Lisco T, Isernia R, De Pergola G, De Nucci S, Rinaldi R, Liso M, Giardiello C. Gender and Liver Steatosis Discriminate Different Physiological Patterns in Obese Patients Undergoing Bariatric Surgery: Obesity Center Cohort. Nutrients 2023; 15:nu15102381. [PMID: 37242264 DOI: 10.3390/nu15102381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 03/20/2023] [Accepted: 03/20/2023] [Indexed: 05/28/2023] Open
Abstract
BACKGROUND Obesity is a major public health problem worldwide. Bariatric surgery can reduce body weight, and it is one of the better ways to improve metabolic disease and lifestyle. The aim of this study was to explore a new cohort of patients with obesity and evaluate the gender differences and the steatosis status within the gender group. METHODS A cohort of 250 adult obese patients with BMI ≥ 30 and age >18 years, eligible for gastric bariatric surgery at Pineta Grande Hospital, Castel Volturno (Italy) was studied. RESULTS The prevalence in women was higher (72.40%) than men (27.60%). Overall, results indicated many statistically significant gender differences in hematological and clinical parameters. Analysis of the subcohorts based on the severity of steatosis revealed differences of this condition between the genders. Steatosis was more prevalent in the male subcohort, but female patients revealed greater within-group differences. CONCLUSIONS Many differences were found not only in the total cohort but also between the gender subcohorts, both in the presence and absence of steatosis. We can conclude that the pathophysiological, genetic, and hormonal patterns affecting these patients delineate different individual profiles.
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Affiliation(s)
- Rossella Donghia
- National Institute of Gastroenterology-IRCCS "Saverio de Bellis", 70013 Castellana Grotte, Italy
| | | | | | - Andrea Vitale
- Pineta Grande Hospital, 81030 Castel Volturno, Italy
| | - Giuseppe Lippolis
- National Institute of Gastroenterology-IRCCS "Saverio de Bellis", 70013 Castellana Grotte, Italy
| | - Teresa Lisco
- National Institute of Gastroenterology-IRCCS "Saverio de Bellis", 70013 Castellana Grotte, Italy
| | - Roberta Isernia
- National Institute of Gastroenterology-IRCCS "Saverio de Bellis", 70013 Castellana Grotte, Italy
| | - Giovanni De Pergola
- National Institute of Gastroenterology-IRCCS "Saverio de Bellis", 70013 Castellana Grotte, Italy
| | - Sara De Nucci
- National Institute of Gastroenterology-IRCCS "Saverio de Bellis", 70013 Castellana Grotte, Italy
| | - Roberta Rinaldi
- National Institute of Gastroenterology-IRCCS "Saverio de Bellis", 70013 Castellana Grotte, Italy
| | - Marina Liso
- National Institute of Gastroenterology-IRCCS "Saverio de Bellis", 70013 Castellana Grotte, Italy
| | - Cristiano Giardiello
- National Institute of Gastroenterology-IRCCS "Saverio de Bellis", 70013 Castellana Grotte, Italy
- Pineta Grande Hospital, 81030 Castel Volturno, Italy
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7
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Understanding the female athlete: molecular mechanisms underpinning menstrual phase differences in exercise metabolism. Eur J Appl Physiol 2023; 123:423-450. [PMID: 36402915 DOI: 10.1007/s00421-022-05090-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 11/07/2022] [Indexed: 11/20/2022]
Abstract
Research should equitably reflect responses in men and women. Including women in research, however, necessitates an understanding of the ovarian hormones and menstrual phase variations in both cellular and systems physiology. This review outlines recent advances in the multiplicity of ovarian hormone molecular signaling that elucidates the mechanisms for menstrual phase variability in exercise metabolism. The prominent endogenous estrogen, 17-β-estradiol (E2), molecular structure is bioactive in stabilizing plasma membranes and quenching free radicals and both E2 and progesterone (P4) promote the expression of antioxidant enzymes attenuating exercise-induced muscle damage in the late follicular (LF) and mid-luteal (ML) phases. E2 and P4 bind nuclear hormone receptors and membrane-bound receptors to regulate gene expression directly or indirectly, which importantly includes cross-regulated expression of their own receptors. Activation of membrane-bound receptors also regulates kinases causing rapid cellular responses. Careful analysis of these signaling pathways explains menstrual phase-specific differences. Namely, E2-promoted plasma glucose uptake during exercise, via GLUT4 expression and kinases, is nullified by E2-dominant suppression of gluconeogenic gene expression in LF and ML phases, ameliorated by carbohydrate ingestion. E2 signaling maximizes fat oxidation capacity in LF and ML phases, pending low-moderate exercise intensities, restricted nutrient availability, and high E2:P4 ratios. P4 increases protein catabolism during the luteal phase by indeterminate mechanisms. Satellite cell function supported by E2-targeted gene expression is countered by P4, explaining greater muscle strengthening from follicular phase-based training. In totality, this integrative review provides causative effects, supported by meta-analyses for quantitative actuality, highlighting research opportunities and evidence-based relevance for female athletes.
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8
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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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9
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Goraya MHN, Abbasi EUH, Amin MK, Inayat F, Ashraf MJ, Qayyum M, Hussain N, Nawaz G, Zaman MA, Malik A. Acute pancreatitis secondary to tamoxifen-associated hypertriglyceridemia: A clinical update. J Oncol Pharm Pract 2023; 29:218-225. [PMID: 35410558 DOI: 10.1177/10781552221093969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
INTRODUCTION Drug-induced pancreatitis has been increasingly recognized, but it is frequently encountered as an inconspicuous etiology. The underlying mechanisms of injury vary with different drugs. Tamoxifen is a frequently used anticancer drug that acts by selective modulation of the estrogen receptor in patients with breast cancer. Tamoxifen-induced hypertriglyceridemia is a relatively rare etiological factor for acute pancreatitis. However, acute pancreatitis secondary to this adverse effect remains an exceedingly important clinicopathologic entity. CASE REPORT We hereby delineate a rare case of acute pancreatitis secondary to hypertriglyceridemia in a patient who was on tamoxifen treatment for the past 3 years. Her serum lipase and triglyceride levels were markedly elevated at 14,285 IU/L and 20,344 mg/dL, respectively. The diagnosis was considered based on the findings of a standard diagnostic workup and exclusion of alternative causes of acute pancreatitis. MANAGEMENT AND OUTCOME The patient was instituted prompt treatment with intravenous insulin infusion and gemfibrozil. The clinical outcome was favorable with no complications. Tamoxifen was permanently discontinued and was replaced with letrozole. DISCUSSION This article illustrates that acute pancreatitis should be considered in the differential diagnoses of abdominal pain and elevated pancreatic enzymes in patients undergoing tamoxifen treatment. It also underscores the importance of pre- and post-tamoxifen lipid screening, especially in patients with a history of dyslipidemia and diabetes mellitus. It will facilitate an expedient detection of hypertriglyceridemia, potentially saving patients from associated morbidity and mortality.
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Affiliation(s)
| | | | | | | | | | | | | | - Gul Nawaz
- 66909Allama Iqbal Medical College, Lahore, Pakistan
| | | | - Adnan Malik
- 25815Loyola University Medical Center, Maywood, IL, USA
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10
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Haque N, Tischkau SA. Sexual Dimorphism in Adipose-Hypothalamic Crosstalk and the Contribution of Aryl Hydrocarbon Receptor to Regulate Energy Homeostasis. Int J Mol Sci 2022; 23:ijms23147679. [PMID: 35887027 PMCID: PMC9322714 DOI: 10.3390/ijms23147679] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 07/08/2022] [Accepted: 07/09/2022] [Indexed: 11/16/2022] Open
Abstract
There are fundamental sex differences in the regulation of energy homeostasis. Better understanding of the underlying mechanisms of energy balance that account for this asymmetry will assist in developing sex-specific therapies for sexually dimorphic diseases such as obesity. Multiple organs, including the hypothalamus and adipose tissue, play vital roles in the regulation of energy homeostasis, which are regulated differently in males and females. Various neuronal populations, particularly within the hypothalamus, such as arcuate nucleus (ARC), can sense nutrient content of the body by the help of peripheral hormones such leptin, derived from adipocytes, to regulate energy homeostasis. This review summarizes how adipose tissue crosstalk with homeostatic network control systems in the brain, which includes energy regulatory regions and the hypothalamic–pituitary axis, contribute to energy regulation in a sex-specific manner. Moreover, development of obesity is contingent upon diet and environmental factors. Substances from diet and environmental contaminants can exert insidious effects on energy metabolism, acting peripherally through the aryl hydrocarbon receptor (AhR). Developmental AhR activation can impart permanent alterations of neuronal development that can manifest a number of sex-specific physiological changes, which sometimes become evident only in adulthood. AhR is currently being investigated as a potential target for treating obesity. The consensus is that impaired function of the receptor protects from obesity in mice. AhR also modulates sex steroid receptors, and hence, one of the objectives of this review is to explain why investigating sex differences while examining this receptor is crucial. Overall, this review summarizes sex differences in the regulation of energy homeostasis imparted by the adipose–hypothalamic axis and examines how this axis can be affected by xenobiotics that signal through AhR.
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Affiliation(s)
- Nazmul Haque
- Department of Pharmacology, Southern Illinois University School of Medicine, Springfield, IL 62702, USA;
| | - Shelley A. Tischkau
- Department of Pharmacology, Southern Illinois University School of Medicine, Springfield, IL 62702, USA;
- Department of Medical Microbiology, Immunology and Cell Biology, Southern Illinois University School of Medicine, Springfield, IL 62702, USA
- Correspondence:
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11
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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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12
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Maximizing the Estrogenic Potential of Soy Isoflavones through the Gut Microbiome: Implication for Cardiometabolic Health in Postmenopausal Women. Nutrients 2022; 14:nu14030553. [PMID: 35276910 PMCID: PMC8840243 DOI: 10.3390/nu14030553] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 01/17/2022] [Accepted: 01/21/2022] [Indexed: 12/24/2022] Open
Abstract
Soy isoflavones have been suggested as an alternative treatment for managing postmenopausal symptoms and promoting long-term health due to their structural similarity to mammalian estrogen and ability to bind to estrogen receptors. Among all soy isoflavones and their metabolites, (S)-equol is known for having the strongest estrogenic activity. Equol is a metabolite of the soy isoflavone daidzein produced through intestinal bacterial metabolism. However, more than half of the human population is not able to produce equol due to the lack of equol-producing bacteria in their gastrointestinal tract. The interpersonal variations in the gut microbiome complicate the interpretation of data collected from humans. Furthermore, because rodents are efficient equol-producers, translatability between rodent models and humans is challenging. Herein, we first summarized the current knowledge of the microbial conversion of daidzein to equol, its relation to health, and proposed the need for developing model systems by which equol production can be manipulated while controlling other known confounding factors. Determining the necessity of equol-producing capacity within a gut microbial community when consuming soy as a functional ingredient, and identifying strategies to maximize equol production by modulating the gut microbiome, may provide future therapeutic approaches to improve the health of postmenopausal women.
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Ikeda T, Watanabe S, Mitani T. Genistein regulates adipogenesis by blocking the function of adenine nucleotide translocase-2 in the mitochondria. Biosci Biotechnol Biochem 2021; 86:260-272. [PMID: 34849563 DOI: 10.1093/bbb/zbab203] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 11/24/2021] [Indexed: 01/03/2023]
Abstract
Genistein exerts anti-adipogenic effects, but its target molecules remain unclear. Here, we delineated the molecular mechanism underlying the anti-adipogenic effect of genistein. A pulldown assay using genistein-immobilized beads identified adenine nucleotide translocase-2 as a genistein-binding protein in adipocytes. Adenine nucleotide translocase-2 exchanges ADP/ATP through the mitochondrial inner membrane. Similar to the knockdown of adenine nucleotide translocase-2, genistein treatment decreased ADP uptake into the mitochondria and ATP synthesis. Genistein treatment and adenine nucleotide translocase-2 knockdown suppressed adipogenesis and increased phosphorylation of AMP-activated protein kinase. Adenine nucleotide translocase-2 knockdown reduced the transcriptional activity of CCAAT/enhancer-binding protein β, whereas AMP-activated protein kinase inhibition restored the suppression of adipogenesis by adenine nucleotide translocase-2 knockdown. These results indicate that genistein interacts directly with adenine nucleotide translocase-2 to suppress its function. The downregulation of adenine nucleotide translocase-2 reduces the transcriptional activity of CCAAT/enhancer-binding protein β via activation of AMP-activated protein kinase, which consequently represses adipogenesis.
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Affiliation(s)
- Takahiro Ikeda
- Division of Food Science and Biotechnology, Department of Agriculture, Graduated School of Science and Technology, Shinshu University, 8304 Minami-minowa, Kamiina, Nagano, 3994598, Japan
| | - Shun Watanabe
- Division of Food Science and Biotechnology, Department of Agriculture, Graduated School of Science and Technology, Shinshu University, 8304 Minami-minowa, Kamiina, Nagano, 3994598, Japan
| | - Takakazu Mitani
- Division of Food Science and Biotechnology, Department of Agriculture, Graduated School of Science and Technology, Shinshu University, 8304 Minami-minowa, Kamiina, Nagano, 3994598, Japan.,Division of Bioscience and Biotechnology, Faculty of Agriculture, Shinshu University, 8304 Minami-minowa, Kamiina, Nagano, 3994598, Japan
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Fritsch LJ, McCaulley SJ, Johnson CR, Lawson NJ, Gorres-Martens BK. Exercise prevents whole body type 2 diabetes risk factors better than estradiol replacement in rats. J Appl Physiol (1985) 2021; 131:1520-1531. [PMID: 34590912 DOI: 10.1152/japplphysiol.00098.2021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
The absence of estrogens in postmenopausal women is linked to an increased risk of type 2 diabetes (T2D) and estradiol replacement can decrease this risk. Notably, exercise can also treat and prevent T2D. This study seeks to understand the molecular mechanisms by which estradiol and exercise induce their beneficial effects via assessing whole body and cellular changes. Female Wistar rats were ovariectomized and fed a high-fat diet for 10 wk and divided into the following four experimental groups: 1) no treatment (control), 2) exercise (Ex), 3) estradiol replacement, and 4) Ex + estradiol. Both Ex and estradiol decreased the total body weight gain. However, only exercise effectively reduced the white adipose tissue (WAT) weight gain, food intake, blood glucose levels, and serum insulin levels. At the molecular level, exercise increased the noninsulin-stimulated pAkt levels in the WAT. In the liver, estradiol increased the protein expression of acetyl-CoA carboxylase (ACC) and fatty acid synthase (FAS) and estradiol decreased the hepatic protein expression of lipoprotein lipase (LPL). In the WAT, estradiol and exercise increased the protein expression of adipose triglyceride lipase (ATGL). Exercise provides better protection against T2D when considering whole body measurements, which may be due to increased noninsulin-stimulated pAkt in the WAT. However, at the cellular level, several molecular changes in fat metabolism and fat storage occurred in the liver and WAT with estradiol treatment.NEW & NOTEWORTHY Exercise provides better protection than estradiol against type 2 diabetes when considering whole body measurements including adipose tissue weight, blood glucose levels, and serum insulin levels, which may be due to increased noninsulin-stimulated pAkt in the adipose tissue. However, at the cellular level, several molecular changes in fat metabolism and fat storage occurred in the liver and adipose tissue with estradiol treatment.
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Affiliation(s)
- Luke J Fritsch
- Biology Department, Augustana University, Sioux Falls, South Dakota
| | - Skylar J McCaulley
- Biology Department, University of Sioux Falls, Sioux Falls, South Dakota
| | - Colton R Johnson
- Exercise Science Department, University of Sioux Falls, Sioux Falls, South Dakota
| | - Nicholaus J Lawson
- Exercise Science Department, University of Sioux Falls, Sioux Falls, South Dakota
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15
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Katzer K, Hill JL, McIver KB, Foster MT. Lipedema and the Potential Role of Estrogen in Excessive Adipose Tissue Accumulation. Int J Mol Sci 2021; 22:ijms222111720. [PMID: 34769153 PMCID: PMC8583809 DOI: 10.3390/ijms222111720] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 10/25/2021] [Accepted: 10/26/2021] [Indexed: 12/26/2022] Open
Abstract
Lipedema is a painful fat disorder that affects ~11% of the female population. It is characterized by bilateral, disproportionate accumulation of subcutaneous adipose tissue predominantly in the lower body. The onset of lipedema pathophysiology is thought to occur during periods of hormonal fluctuation, such as puberty, pregnancy, or menopause. Although the identification and characterization of lipedema have improved, the underlying disease etiology remains to be elucidated. Estrogen, a key regulator of adipocyte lipid and glucose metabolism, and female-associated body fat distribution are postulated to play a contributory role in the pathophysiology of lipedema. Dysregulation of adipose tissue accumulation via estrogen signaling likely occurs by two mechanisms: (1). altered adipocyte estrogen receptor distribution (ERα/ERß ratio) and subsequent metabolic signaling and/or (2). increased release of adipocyte-produced steroidogenic enzymes leading to increased paracrine estrogen release. These alterations could result in increased activation of peroxisome proliferator-activated receptor γ (PPARγ), free fatty acid entry into adipocytes, glucose uptake, and angiogenesis while decreasing lipolysis, mitochondriogenesis, and mitochondrial function. Together, these metabolic alterations would lead to increased adipogenesis and adipocyte lipid deposition, resulting in increased adipose depot mass. This review summarizes research characterizing estrogen-mediated adipose tissue metabolism and its possible relation to excessive adipose tissue accumulation associated with lipedema.
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Chen H, Jiang D, Li Z, Wang Y, Yang X, Li S, Li S, Yang W, Li G. Comparative Physiological and Transcriptomic Profiling Offers Insight into the Sexual Dimorphism of Hepatic Metabolism in Size-Dimorphic Spotted Scat ( Scatophagus argus). Life (Basel) 2021; 11:life11060589. [PMID: 34205643 PMCID: PMC8233746 DOI: 10.3390/life11060589] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 06/13/2021] [Accepted: 06/20/2021] [Indexed: 12/13/2022] Open
Abstract
The spotted scat (Scatophagus argus) is an economically important cultured marine fish that exhibits a typical sexual size dimorphism (SSD). SSD has captivated considerable curiosity for farmed fish production; however, up till now the exact underlying mechanism remains largely unclear. As an important digestive and metabolic organ, the liver plays key roles in the regulation of fish growth. It is necessary to elucidate its significance as a downstream component of the hypothalamic-pituitary-liver axis in the formation of SSD. In this study, the liver physiological differences between the sexes were evaluated in S. argus, and the activity of several digestive and metabolic enzymes were affected by sex. Females had higher amylase, protease, and glucose-6-phosphate dehydrogenase activities, while males exhibited markedly higher hepatic lipase and antioxidant enzymes activities. A comparative transcriptomics was then performed to characterize the responsive genes. Illumina sequencing generated 272.6 million clean reads, which were assembled into 79,115 unigenes. A total of 259 differentially expressed genes were identified and a few growth-controlling genes such as igf1 and igfbp1 exhibited female-biased expression. Further analyses showed that several GO terms and pathways associated with metabolic process, particularly lipid and energy metabolisms, were significantly enriched. The male liver showed a more active mitochondrial energy metabolism, implicating an increased energy expenditure associated with reproduction. Collectively, the female-biased growth dimorphism of S. argus may be partially attributed to sexually dimorphic metabolism in the liver. These findings would facilitate further understanding of the nature of SSD in teleost fish.
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Affiliation(s)
- Huapu Chen
- Guangdong Research Center on Reproductive Control and Breeding Technology of Indigenous Valuable Fish Species, Key Laboratory of Marine Ecology and Aquaculture Environment of Zhanjiang, Fisheries College, Guangdong Ocean University, Zhanjiang 524088, China; (H.C.); (D.J.); (Z.L.); (Y.W.)
| | - Dongneng Jiang
- Guangdong Research Center on Reproductive Control and Breeding Technology of Indigenous Valuable Fish Species, Key Laboratory of Marine Ecology and Aquaculture Environment of Zhanjiang, Fisheries College, Guangdong Ocean University, Zhanjiang 524088, China; (H.C.); (D.J.); (Z.L.); (Y.W.)
| | - Zhiyuan Li
- Guangdong Research Center on Reproductive Control and Breeding Technology of Indigenous Valuable Fish Species, Key Laboratory of Marine Ecology and Aquaculture Environment of Zhanjiang, Fisheries College, Guangdong Ocean University, Zhanjiang 524088, China; (H.C.); (D.J.); (Z.L.); (Y.W.)
| | - Yaorong Wang
- Guangdong Research Center on Reproductive Control and Breeding Technology of Indigenous Valuable Fish Species, Key Laboratory of Marine Ecology and Aquaculture Environment of Zhanjiang, Fisheries College, Guangdong Ocean University, Zhanjiang 524088, China; (H.C.); (D.J.); (Z.L.); (Y.W.)
| | - Xuewei Yang
- College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518052, China; (X.Y.); (S.L.)
| | - Shuangfei Li
- College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518052, China; (X.Y.); (S.L.)
| | - Shuisheng Li
- State Key Laboratory of Biocontrol, Sun Yat-sen University, Guangzhou 510275, China;
- Guangdong Province Key Laboratory for Aquatic Economic Animals, Sun Yat-sen University, Guangzhou 510275, China
| | - Wei Yang
- Guangdong Research Center on Reproductive Control and Breeding Technology of Indigenous Valuable Fish Species, Key Laboratory of Marine Ecology and Aquaculture Environment of Zhanjiang, Fisheries College, Guangdong Ocean University, Zhanjiang 524088, China; (H.C.); (D.J.); (Z.L.); (Y.W.)
- Food and Environmental Engineering Department, Yangjiang Polytechnic, Yangjiang 529566, China
- Correspondence: (W.Y.); (G.L.); Tel.: +86-662-3362800 (W.Y.); +86-759-2383124 (G.L.); Fax: +86-662-3316729 (W.Y.); +86-759-2382459 (G.L.)
| | - Guangli Li
- Guangdong Research Center on Reproductive Control and Breeding Technology of Indigenous Valuable Fish Species, Key Laboratory of Marine Ecology and Aquaculture Environment of Zhanjiang, Fisheries College, Guangdong Ocean University, Zhanjiang 524088, China; (H.C.); (D.J.); (Z.L.); (Y.W.)
- Correspondence: (W.Y.); (G.L.); Tel.: +86-662-3362800 (W.Y.); +86-759-2383124 (G.L.); Fax: +86-662-3316729 (W.Y.); +86-759-2382459 (G.L.)
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Isobe H, Shimoda M, Kan Y, Tatsumi F, Katakura Y, Kimura T, Obata A, Kohara K, Nakanishi S, Mune T, Kaku K, Kaneto H. A case of tamoxifen-induced hypertriglyceridemia monitoring the changes in lipoprotein fractions over time. BMC Endocr Disord 2021; 21:115. [PMID: 34107939 PMCID: PMC8191117 DOI: 10.1186/s12902-021-00780-z] [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: 02/26/2021] [Accepted: 06/01/2021] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Tamoxifen, which is one of the selective estrogen receptor modulators (SERMs), can bring out life-threatening complication, e.g. hypertriglyceridemia-induced acute pancreatitis, although it is rare. We precisely report changes in lipoprotein metabolism before and after tamoxifen discontinuation because there have been few reports of it. CASE PRESENTATION 47-year-old premenopausal woman with dyslipidemia, type 2 diabetes, nonalcoholic fatty liver disease and chronic kidney disease was prescribed tamoxifen as adjuvant therapy after operation of breast cancer. She experienced severe tamoxifen-induced hypertriglyceridemia several months after dosing tamoxifen. Before cessation of tamoxifen, lipoprotein fraction test revealed marked stagnation of VLDL and IDL metabolisms, resulting in severe hypertriglyceridemia (serum triglyceride level was 1881 mg/dL). Seven days after tamoxifen withdrawal, lipoprotein fraction test showed that the metabolisms of endogenous lipoproteins were changed drastically. CONCLUSIONS From these results, we confirmed that tamoxifen certainly changes lipoprotein metabolism through suppression of post-heparin lipolytic activity. It is very important to evaluate the balance between benefit and risk before dosing tamoxifen and survey lipid profiles constantly during treatment to avoid life-threatening complication when prescription of tamoxifen is planned.
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Affiliation(s)
- Hayato Isobe
- Division of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, 577 Matsushima, Kurashiki, 701-0192, Japan
| | - Masashi Shimoda
- Division of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, 577 Matsushima, Kurashiki, 701-0192, Japan.
| | - Yuki Kan
- Division of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, 577 Matsushima, Kurashiki, 701-0192, Japan
| | - Fuminori Tatsumi
- Division of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, 577 Matsushima, Kurashiki, 701-0192, Japan
| | - Yukino Katakura
- Division of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, 577 Matsushima, Kurashiki, 701-0192, Japan
| | - Tomohiko Kimura
- Division of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, 577 Matsushima, Kurashiki, 701-0192, Japan
| | - Atsushi Obata
- Division of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, 577 Matsushima, Kurashiki, 701-0192, Japan
| | - Kenji Kohara
- Division of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, 577 Matsushima, Kurashiki, 701-0192, Japan
| | - Shuhei Nakanishi
- Division of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, 577 Matsushima, Kurashiki, 701-0192, Japan
| | - Tomoatsu Mune
- Division of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, 577 Matsushima, Kurashiki, 701-0192, Japan
| | - Kohei Kaku
- Professor with special assignment, Kawasaki Medical School, 577 Matsushima, Kurashiki, 701-0192, Japan
| | - Hideaki Kaneto
- Division of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, 577 Matsushima, Kurashiki, 701-0192, Japan
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Hetemäki N, Mikkola TS, Tikkanen MJ, Wang F, Hämäläinen E, Turpeinen U, Haanpää M, Vihma V, Savolainen-Peltonen H. Adipose tissue estrogen production and metabolism in premenopausal women. J Steroid Biochem Mol Biol 2021; 209:105849. [PMID: 33610799 DOI: 10.1016/j.jsbmb.2021.105849] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 02/03/2021] [Accepted: 02/07/2021] [Indexed: 02/07/2023]
Abstract
OBJECTIVE Although the ovaries produce the majority of estrogens in women before menopause, estrogen is also synthesized in peripheral tissues such as adipose tissue (AT). The typical female AT distribution, concentrated in subcutaneous and femoro-gluteal regions, is estrogen-mediated, but the significance of estrogen synthesis in AT of premenopausal women is poorly understood. DESIGN AND METHODS Serum and subcutaneous and visceral AT homogenates from 28 premenopausal women undergoing non-malignant surgery were analyzed for estrone, estradiol, and serum estrone sulfate (E1S) concentrations with liquid chromatography-tandem mass spectrometry. Isotopic precursors were used to measure enzyme activities of estrone-producing steroid sulfatase and estradiol-producing 17β-hydroxysteroid dehydrogenases (17β-HSD). Messenger RNA (mRNA) expression levels of genes for estrogen-metabolizing enzymes were analyzed using real-time reverse transcription quantitative polymerase chain reaction. RESULTS While estradiol was the predominant circulating active estrogen, estrone dominated in AT, with a higher concentration in visceral than subcutaneous AT (median, 2657 vs 1459 pmol/kg; P = 0.002). Both AT depots converted circulating E1S to estrone, and estrone to estradiol. Median levels of estrone were five to ten times higher in subcutaneous and visceral AT than in serum (P < 0.001) and the estradiol level in visceral AT was 1.3 times higher than in serum (P < 0.005). The local estrone concentration in visceral AT correlated positively with mRNA expression of estrone-producing enzyme aromatase (r = 0.65, P = 0.003). Waist circumference correlated positively with increased estradiol production in subcutaneous AT (r = 0.60, P = 0.039). CONCLUSIONS Premenopausal AT demonstrated high estrogenic enzyme activity and considerable local estrogen concentrations. This may be a factor promoting female-typical AT distribution in premenopausal women.
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Affiliation(s)
- Natalia Hetemäki
- Obstetrics and Gynecology, University of Helsinki and Helsinki University Hospital, FIN-00029 HUS, Helsinki, Finland; Folkhälsan Research Center, University of Helsinki, FIN-00014, Helsinki, Finland
| | - Tomi S Mikkola
- Obstetrics and Gynecology, University of Helsinki and Helsinki University Hospital, FIN-00029 HUS, Helsinki, Finland; Folkhälsan Research Center, University of Helsinki, FIN-00014, Helsinki, Finland
| | - Matti J Tikkanen
- Folkhälsan Research Center, University of Helsinki, FIN-00014, Helsinki, Finland; Heart and Lung Center, University of Helsinki and Helsinki University Hospital, FIN-00029 HUS, Helsinki, Finland
| | - Feng Wang
- Folkhälsan Research Center, University of Helsinki, FIN-00014, Helsinki, Finland
| | - Esa Hämäläinen
- Department of Clinical Chemistry, University of Helsinki, FIN-00029 HUS, Helsinki, Finland
| | - Ursula Turpeinen
- HUSLAB, Helsinki University Hospital, FIN-00029 HUS, Helsinki, Finland
| | - Mikko Haanpää
- HUSLAB, Helsinki University Hospital, FIN-00029 HUS, Helsinki, Finland
| | - Veera Vihma
- Folkhälsan Research Center, University of Helsinki, FIN-00014, Helsinki, Finland; Department of General Practice and Primary Health Care, University of Helsinki, FIN-00014, Helsinki, Finland
| | - Hanna Savolainen-Peltonen
- Obstetrics and Gynecology, University of Helsinki and Helsinki University Hospital, FIN-00029 HUS, Helsinki, Finland; Folkhälsan Research Center, University of Helsinki, FIN-00014, Helsinki, Finland.
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19
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Goossens GH, Jocken JWE, Blaak EE. Sexual dimorphism in cardiometabolic health: the role of adipose tissue, muscle and liver. Nat Rev Endocrinol 2021; 17:47-66. [PMID: 33173188 DOI: 10.1038/s41574-020-00431-8] [Citation(s) in RCA: 151] [Impact Index Per Article: 50.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/02/2020] [Indexed: 12/11/2022]
Abstract
Obesity is associated with many adverse health effects, such as an increased cardiometabolic risk. Despite higher adiposity for a given BMI, premenopausal women are at lower risk of cardiometabolic disease than men of the same age. This cardiometabolic advantage in women seems to disappear after the menopause or when type 2 diabetes mellitus develops. Sexual dimorphism in substrate supply and utilization, deposition of excess lipids and mobilization of stored lipids in various key metabolic organs (such as adipose tissue, skeletal muscle and the liver) are associated with differences in tissue-specific insulin sensitivity and cardiometabolic risk profiles between men and women. Moreover, lifestyle-related factors and epigenetic and genetic mechanisms seem to affect metabolic complications and disease risk in a sex-specific manner. This Review provides insight into sexual dimorphism in adipose tissue distribution, adipose tissue, skeletal muscle and liver substrate metabolism and tissue-specific insulin sensitivity in humans, as well as the underlying mechanisms, and addresses the effect of these sex differences on cardiometabolic health. Additionally, this Review highlights the implications of sexual dimorphism in the pathophysiology of obesity-related cardiometabolic risk for the development of sex-specific prevention and treatment strategies.
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Affiliation(s)
- Gijs H Goossens
- Department of Human Biology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, Netherlands.
| | - Johan W E Jocken
- Department of Human Biology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, Netherlands
| | - Ellen E Blaak
- Department of Human Biology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, Netherlands.
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20
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Mandrup CM, Roland CB, Egelund J, Nyberg M, Enevoldsen LH, Kjaer A, Clemmensen A, Christensen AN, Suetta C, Frikke-Schmidt R, Utoft BB, Kristensen JM, Wojtaszewski JFP, Hellsten Y, Stallknecht B. Effects of High-Intensity Exercise Training on Adipose Tissue Mass, Glucose Uptake and Protein Content in Pre- and Post-menopausal Women. Front Sports Act Living 2020; 2:60. [PMID: 33345051 PMCID: PMC7739715 DOI: 10.3389/fspor.2020.00060] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 04/28/2020] [Indexed: 12/11/2022] Open
Abstract
The menopausal transition is accompanied by changes in adipose tissue storage, leading to an android body composition associated with increased risk of type 2 diabetes and cardiovascular disease in post-menopausal women. Estrogens probably affect local adipose tissue depots differently. We investigated how menopausal status and exercise training influence adipose tissue mass, adipose tissue insulin sensitivity and adipose tissue proteins associated with lipogenesis/lipolysis and mitochondrial function. Healthy, normal-weight pre- (n = 21) and post-menopausal (n = 20) women participated in high-intensity exercise training three times per week for 12 weeks. Adipose tissue distribution was determined by dual-energy x-ray absorptiometry and magnetic resonance imaging. Adipose tissue glucose uptake was assessed by positron emission tomography/computed tomography (PET/CT) by the glucose analog [18F]fluorodeoxyglucose ([18F]FDG) during continuous insulin infusion (40 mU·m−2·min−1). Protein content associated with insulin signaling, lipogenesis/lipolysis, and mitochondrial function were determined by western blotting in abdominal and femoral white adipose tissue biopsies. The mean age difference between the pre- and the post-menopausal women was 4.5 years. Exercise training reduced subcutaneous (~4%) and visceral (~6%) adipose tissue masses similarly in pre- and post-menopausal women. Insulin-stimulated glucose uptake, assessed by [18F]FDG-uptake during PET/CT, was similar in pre- and post-menopausal women in abdominal, gluteal, and femoral adipose tissue depots, despite skeletal muscle insulin resistance in post- compared to pre-menopausal women in the same cohort. Insulin-stimulated glucose uptake in adipose tissue depots was not changed after 3 months of high-intensity exercise training, but insulin sensitivity was higher in visceral compared to subcutaneous adipose tissue depots (~139%). Post-menopausal women exhibited increased hexokinase and adipose triglyceride lipase content in subcutaneous abdominal adipose tissue. Physical activity in the early post-menopausal years reduces abdominal obesity, but insulin sensitivity of adipose tissue seems unaffected by both menopausal status and physical activity.
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Affiliation(s)
- Camilla M Mandrup
- Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Caroline B Roland
- Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark.,Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| | - Jon Egelund
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| | - Michael Nyberg
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| | - Lotte Hahn Enevoldsen
- Department of Clinical Physiology, Nuclear Medicine & PET, Rigshospitalet, Copenhagen, Denmark
| | - Andreas Kjaer
- Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark.,Department of Clinical Physiology, Nuclear Medicine & PET, Rigshospitalet, Copenhagen, Denmark
| | - Andreas Clemmensen
- Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark.,Department of Clinical Physiology, Nuclear Medicine & PET, Rigshospitalet, Copenhagen, Denmark
| | - Anders Nymark Christensen
- Department of Applied Mathematics and Computer Science, Technical University of Denmark, Copenhagen, Denmark
| | - Charlotte Suetta
- Department of Clinical Physiology, Nuclear Medicine & PET, Rigshospitalet, Copenhagen, Denmark.,Geriatric Research Unit, Herlev-Gentofte & Frederiksberg-Bispebjerg Hospitals, University of Copenhagen, Copenhagen, Denmark.,Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Ruth Frikke-Schmidt
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark.,Department of Clinical Biochemistry, Rigshospitalet, Copenhagen, Denmark
| | | | | | | | - Ylva Hellsten
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| | - Bente Stallknecht
- Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark
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21
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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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22
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Myocardium Metabolism in Physiological and Pathophysiological States: Implications of Epicardial Adipose Tissue and Potential Therapeutic Targets. Int J Mol Sci 2020; 21:ijms21072641. [PMID: 32290181 PMCID: PMC7177518 DOI: 10.3390/ijms21072641] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 04/05/2020] [Accepted: 04/08/2020] [Indexed: 01/01/2023] Open
Abstract
The main energy substrate of adult cardiomyocytes for their contractility are the fatty acids. Its metabolism generates high ATP levels at the expense of high oxygen consumption in the mitochondria. Under low oxygen supply, they can get energy from other substrates, mainly glucose, lactate, ketone bodies, etc., but the mitochondrial dysfunction, in pathological conditions, reduces the oxidative metabolism. In consequence, fatty acids are stored into epicardial fat and its accumulation provokes inflammation, insulin resistance, and oxidative stress, which enhance the myocardium dysfunction. Some therapies focused on improvement the fatty acids entry into mitochondria have failed to demonstrate benefits on cardiovascular disorders. Oppositely, those therapies with effects on epicardial fat volume and inflammation might improve the oxidative metabolism of myocardium and might reduce the cardiovascular disease progression. This review aims at explain (a) the energy substrate adaptation of myocardium in physiological conditions, (b) the reduction of oxidative metabolism in pathological conditions and consequences on epicardial fat accumulation and insulin resistance, and (c) the reduction of cardiovascular outcomes after regulation by some therapies.
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Zhao L, Wang B, Gomez NA, de Avila JM, Zhu MJ, Du M. Even a low dose of tamoxifen profoundly induces adipose tissue browning in female mice. Int J Obes (Lond) 2020; 44:226-234. [PMID: 30705393 PMCID: PMC6669124 DOI: 10.1038/s41366-019-0330-3] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 12/29/2018] [Accepted: 01/16/2019] [Indexed: 11/09/2022]
Abstract
BACKGROUND Tamoxifen-inducible Cre/lox site-specific recombination technology has been widely used to generate conditional transgenic mice. As an estrogen receptor ligand, tamoxifen itself potentially affects energy metabolism, which may confound interpretation of data especially in metabolic studies. Considering sexual dimorphism, in this study, the effects of low-dose tamoxifen administration on energy metabolism, and browning of adipose tissues in female and male mice were investigated. METHODS Female and male C57/BL6 mice were injected with tamoxifen oil solution (i.p.) and then housed at both room temperature (23 ± 2 °C) and cold environment (6 ± 1 °C). Serum, brown and white adipose tissues were obtained, and the effects of tamoxifen administration on energy metabolism and the browning of adipose tissues were evaluated. RESULTS At 25 mg/kg body weight (BDW), tamoxifen administration for 3 alternative days decreased the percentage of inguinal and gonadal white adipose tissue weights in female mice accompanied by the up-regulation of thermogenesis in adipose tissues. In contrast, this dosage of tamoxifen did not induce noticeable changes in the energy metabolism and thermogenesis of adipose tissue in male mice under room temperature. Consistently, under cold stimulus, substantial browning of adipose tissues was observed in female mice injected with tamoxifen (50 mg/kg BDW, single injection) but not in male mice. Two-way ANOVA tests also demonstrated significant interactions between tamoxifen treatment and gender on the expression of thermogenic markers in adipose tissues. CONCLUSION Tamoxifen, even at a low dose, remarkably increases thermogenesis in adipose tissues of female mice; meanwhile, such a low dose could be used in male mice for inducing gene recombination without confounding the interpretation of data related to metabolism and thermogenesis of adipose tissues.
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Affiliation(s)
- Liang Zhao
- Nutrigenomics and Growth Biology Laboratory, Department of Animal Sciences, and School of Molecular Biosciences, Washington State University, Pullman, WA, 99164, USA
| | - Bo Wang
- Nutrigenomics and Growth Biology Laboratory, Department of Animal Sciences, and School of Molecular Biosciences, Washington State University, Pullman, WA, 99164, USA
| | - Noe Alberto Gomez
- Nutrigenomics and Growth Biology Laboratory, Department of Animal Sciences, and School of Molecular Biosciences, Washington State University, Pullman, WA, 99164, USA
| | - Jeanene M de Avila
- Nutrigenomics and Growth Biology Laboratory, Department of Animal Sciences, and School of Molecular Biosciences, Washington State University, Pullman, WA, 99164, USA
| | - Mei-Jun Zhu
- School of Food Sciences, Washington State University, Pullman, WA, 99164, USA
| | - Min Du
- Nutrigenomics and Growth Biology Laboratory, Department of Animal Sciences, and School of Molecular Biosciences, Washington State University, Pullman, WA, 99164, USA.
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Han J, Lu C, Meng Q, Halim A, Yean TJ, Wu G. Plasma concentration of interleukin-6 was upregulated in cancer cachexia patients and was positively correlated with plasma free fatty acid in female patients. Nutr Metab (Lond) 2019; 16:80. [PMID: 31788012 PMCID: PMC6858650 DOI: 10.1186/s12986-019-0409-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 11/06/2019] [Indexed: 01/05/2023] Open
Abstract
Background Cancer cachexia is a clinical manifestation in various advanced cancers that characterized by muscle atrophy and fat loss as its main features; it is frequently associated with systemic inflammatory response. However, the differences in inflammatory response and lipid metabolism of different genders remain unclear. This study explores the difference between cachexic and non-cachexic patients in different genders and cancer types and focus on the plasma inflammation factors levels and lipid metabolism parameters in different genders. Methods We first analyzed the general characteristics in 311 cancer patients between cachexic and non-cachexic patients, with an emphasis on expression levels related to inflammatory factors and lipid metabolism parameters. We then further analyzed these characteristics in different genders and cancer types. Lastly, the correlations between plasma interleukin-6 (IL-6) and lipid metabolism parameters in cachexia patients of different genders were analyzed. Results Among 311 patients, there were 74 cancer cachexia patients (50 males and 24 females) and 237non-cachexia patients (150 males and 87 females). Body mass index (BMI), TNM stage, plasma concentration of hemoglobin, platelet, lymphocyte count, total protein, albumin, prealbumin, total cholesterol, apolipoprotein E (ApoE), free fatty acid (FFA) and IL-6 were significantly different between cachexic and non-cachexic patients (all p < 0.05). In addition, these characteristics were different in different cancer types. When compared to male non-cachexic patients, male cachexic patients showed a significant increase in plasma levels of IL-6 and platelet, later TNM stage, with marked decrease in their plasma total protein, albumin, prealbumin, ApoE as well as their lymphocyte counts and hemoglobin levels (all p < 0.05). In comparison with female non-cachexic patients, female cachexic patients' IL-6 levels and FFA were significantly elevated with noticeable decrease in their BMI, total cholesterol, ApoE and prealbumin, as well as later TNM stage (all p < 0.05). Correlation analysis revealed that IL-6 levels in female cachexic patients had a significant positive correlation with FFA expression, but this correlation not reflected in male patients. Conclusion This study demonstrates the different metabolic characteristics of male and female cancer cachexia patients. Future study about cancer cachexia should pay attention to different genders and cancer types.
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Affiliation(s)
- Jun Han
- 1Department of General Surgery, Zhongshan Hospital of Fudan University, 180 Fenglin Road, Shanghai, 200032 China
| | - Chaocheng Lu
- 1Department of General Surgery, Zhongshan Hospital of Fudan University, 180 Fenglin Road, Shanghai, 200032 China
| | - Qingyang Meng
- 1Department of General Surgery, Zhongshan Hospital of Fudan University, 180 Fenglin Road, Shanghai, 200032 China
| | - Alice Halim
- 2Shanghai Medical College, Fudan University, 138 Yixueyuan Road, Shanghai, 200032 China
| | - Thong Jia Yean
- 2Shanghai Medical College, Fudan University, 138 Yixueyuan Road, Shanghai, 200032 China
| | - Guohao Wu
- 1Department of General Surgery, Zhongshan Hospital of Fudan University, 180 Fenglin Road, Shanghai, 200032 China
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Saleh J, Al-Maqbali M, Abdel-Hadi D. Role of Complement and Complement-Related Adipokines in Regulation of Energy Metabolism and Fat Storage. Compr Physiol 2019; 9:1411-1429. [PMID: 31688967 DOI: 10.1002/cphy.c170037] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Adipose tissue releases many cytokines and inflammatory factors described as adipokines. In obesity, adipokines released from expanding adipose tissue are implicated in disease progression and metabolic dysfunction. However, mechanisms controlling the progression of adiposity and metabolic complications are not fully understood. It has been suggested that expanding fat mass and sustained release of inflammatory adipokines in adipose tissue lead to hypoxia, oxidative stress, apoptosis, and cellular damage. These changes trigger an immune response involving infiltration of adipose tissue with immune cells, complement activation and generation of factors involved in opsonization and clearance of damaged cells. Abundant evidence now indicates that adipose tissue is an active secretory source of complement and complement-related adipokines that, in addition to their inflammatory role, contribute to the regulation of metabolic function. This article highlights advances in knowledge regarding the role of these adipokines in energy regulation of adipose tissue through modulating lipogenic and lipolytic pathways. Several adipokines will be discussed including adipsin, Factor H, properdin, C3a, Acylation-Stimulating Protein, C1q/TNF-related proteins, and response gene to complement-32 (RGC-32). Interactions between these factors will be described considering their immune-metabolic roles in the adipose tissue microenvironment and their potential contribution to progression of adiposity and metabolic dysfunction. The differential expression and the role of complement factors in gender-related fat partitioning will also be addressed. Identifying lipogenic adipokines and their specific autocrine/paracrine roles may provide means for adipose-tissue-targeted therapeutic interventions that may disrupt the vicious circle of adiposity and disease progression. © 2019 American Physiological Society. Compr Physiol 9:1411-1429, 2019.
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Affiliation(s)
- Jumana Saleh
- Biochemistry Department, College of Medicine & Health Sciences, Sultan Qaboos University, Muscat, Oman
| | - Muna Al-Maqbali
- Biochemistry Department, College of Medicine, Sultan Qaboos University, Muscat, Oman
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Cao HJ, Li CR, Wang LY, Ziadlou R, Grad S, Zhang Y, Cheng Y, Lai YX, Yao XS, Alini M, Qin L, Wang XL. Effect and mechanism of psoralidin on promoting osteogenesis and inhibiting adipogenesis. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2019; 61:152860. [PMID: 31048126 DOI: 10.1016/j.phymed.2019.152860] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 01/29/2019] [Accepted: 02/03/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND Psoralidin (PL), a prenylated coumestrol, is isolated from Psoralea corylifolia L. (Fabaceae), which is frequently used for treatment of osteoporosis. PURPOSE This study was designed to investigate the dual effects and potential mechanism of PL on promoting osteogenesis and inhibiting adipogenesis. METHODS Bone marrow mesenchymal stem cells (BMSCs) were used to investigate the effect of PL on stimulating osteogenesis and inhibiting adipogenesis, while preosteoblast MC3T3-E1 cells and preadipocyte 3T3-L1 cells were employed to explore the potential mechanisms. Estradiol (E2) and ICI 182,780 (ICI) were used as the specific agonist and antagonist of classical estrogen receptors (ER), respectively, to interfere with classical ER signaling. Meanwhile, G-1 and G-15 were introduced as the selective agonist and antagonist of G protein coupled receptor 30 (GRP30, a membrane ER) to further clarify if membrane ER involved in PL mediating osteogenesis and adipogenesis RESULTS: PL not only promoted mineralization, but also inhibited adipocytes formation of BMSCs. In terms of osteogenesis, PL enhanced calcium nodule formation, alkaline phosphatase activity and osteocalcin levels in MC3T3-E1 cells. As for adipogenesis, PL decreased adipocyte formation in 3T3-L1 cells through down-regulating several mRNA expressions and protein synthesis of adipogenesis related factors. ICI completely blocked the effect of PL in promoting osteogenesis, but only partially suppressed its effect in inhibition of adipogenesis, while G-15 partially suppressed the effect of PL on promoting mineralization and inhibiting oil drop formation. Furthermore, during suppression of adipocyte differentiation, PL regulated protein kinase B / glycogen synthase kinase 3β / β-catenin signaling pathway. CONCLUSION PL promoted osteogenesis via mediating classical ER pathway, and inhibited adipocytes formation by regulating combined classical and membrane ER pathways. PL might be a potential candidate for the treatment of postmenopausal osteoporosis by modulating the competitive relationship between osteogenesis and adipogenesis of bone marrow mesenchymal stem cells.
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Affiliation(s)
- Hui-Juan Cao
- Translational Medicine R&D Center, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518057, China
| | - Cai-Rong Li
- Translational Medicine R&D Center, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518057, China
| | - Lin-Ying Wang
- Translational Medicine R&D Center, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518057, China
| | - Reihane Ziadlou
- AO Research Institute Davos, Clavadelerstrasse 8, Davos Platz 7270, Switzerland
| | - Sibylle Grad
- AO Research Institute Davos, Clavadelerstrasse 8, Davos Platz 7270, Switzerland
| | - Yan Zhang
- Spine Disease Research Institute, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, China
| | - Yan Cheng
- Department of Pharmacology, School of Pharmaceutical Sciences, Central South University, Changsha 410008, China
| | - Yu-Xiao Lai
- Translational Medicine R&D Center, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518057, China
| | - Xin-Sheng Yao
- College of Pharmacy, Jinan University, Guangzhou 510632, China
| | - Mauro Alini
- AO Research Institute Davos, Clavadelerstrasse 8, Davos Platz 7270, Switzerland
| | - Ling Qin
- Translational Medicine R&D Center, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518057, China; Musculoskeletal Research Laboratory of Department of Orthopaedics & Traumatology and Innovative Orthopaedic Biomaterial and Drug Translational Research Laboratory of Li Ka Shing Institute of Health, The Chinese University of Hong Kong, Hong Kong, China.
| | - Xin-Luan Wang
- Translational Medicine R&D Center, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518057, China; Musculoskeletal Research Laboratory of Department of Orthopaedics & Traumatology and Innovative Orthopaedic Biomaterial and Drug Translational Research Laboratory of Li Ka Shing Institute of Health, The Chinese University of Hong Kong, Hong Kong, China.
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Henstridge DC, Abildgaard J, Lindegaard B, Febbraio MA. Metabolic control and sex: A focus on inflammatory-linked mediators. Br J Pharmacol 2019; 176:4193-4207. [PMID: 30820935 DOI: 10.1111/bph.14642] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 12/05/2018] [Accepted: 01/21/2019] [Indexed: 12/15/2022] Open
Abstract
Men and women have many differing biological and physiological characteristics. Thus, it is no surprise that the control of metabolic processes and the mechanisms underlying metabolic-related diseases have sex-specific components. There is a clear metabolic sexual dimorphism in that up until midlife, men have a far greater likelihood of acquiring cardio-metabolic disease than women. Following menopause, however, this difference is reduced, suggestive of a protective role of the female sex hormones. Inflammatory processes have been implicated in the pathogenesis of cardio-metabolic disease with human studies correlating metabolic disease acquisition or risk with levels of various inflammatory markers. Rodent studies employing genetic modifications or novel pharmacological approaches have provided mechanistic insight into the role of these inflammatory mediators. Sex differences impact inflammatory processes and the subsequent biological response. As a consequence, this may affect how inflammation alters metabolic processes between the sexes. Recently, some of our work in the field of inflammatory genes and metabolic control identified a sexual dimorphism in a preclinical model and caused us to question the frequency and scale of such findings in the literature. This review concentrates on inflammatory-related signalling in relation to obesity, insulin resistance, and type 2 diabetes and highlights the differences observed between males and females. Differences in the activation and signalling of various inflammatory genes and proteins present another reason why studying both male and female patients or animals is important in the context of understanding and finding therapeutics for metabolic-related disease. LINKED ARTICLES: This article is part of a themed section on The Importance of Sex Differences in Pharmacology Research. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v176.21/issuetoc.
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Affiliation(s)
- Darren C Henstridge
- Molecular Metabolism & Aging Laboratory, Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia.,School of Health Sciences, University of Tasmania, Launceston, Tasmania, Australia
| | - Julie Abildgaard
- The Centre of Inflammation and Metabolism and the Centre for Physical Activity Research, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Birgitte Lindegaard
- The Centre of Inflammation and Metabolism and the Centre for Physical Activity Research, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark.,Department of Pulmonary and Infectious Diseases, Nordsjaellands Hospital, Hillerød, Denmark
| | - Mark A Febbraio
- Division of Diabetes & Metabolism, Garvan Institute of Medical Research, Sydney, New South Wales, Australia.,Drug Discover Biology, Monash Institute of Pharmaceutical Sciences, Melbourne, Victoria, Australia
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Bernasochi GB, Bell JR, Simpson ER, Delbridge LM, Boon WC. Impact of Estrogens on the Regulation of White, Beige, and Brown Adipose Tissue Depots. Compr Physiol 2019; 9:457-475. [DOI: 10.1002/cphy.c180009] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Cauci S, Francescato MP, Curcio F. Combined Oral Contraceptives Increase High-Sensitivity C-Reactive Protein but Not Haptoglobin in Female Athletes. Sports Med 2018; 47:175-185. [PMID: 27084393 DOI: 10.1007/s40279-016-0534-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND No studies have examined the effects of oral hormonal contraception on chronic low-grade inflammation as assessed by stratified levels of high-sensitivity C-reactive protein (hsCRP) in athletes. We explored the impact of combined oral contraceptives (OCs) on serum hsCRP, haptoglobin, triglycerides and cholesterol in white female athletes. METHODS Italian sportswomen (n = 205; mean age 24 ± 5.3 years; body mass index 21 ± 2.2 kg m-2; sport activity 8.7 ± 3.65 h week-1) were analyzed according to OC use. RESULTS Progressive hsCRP levels were evaluated in OC users (n = 53) compared to non-OC users (n = 152). Levels of hsCRP from 3.0 to <10.0 mg L-1 (at high risk of future cardiovascular events) were found in 26.4 % (14/53) of OC users and only in 2.6 % (4/153) of non-OC users (OR = 13.3, 95 % CI 4.14-42.6, P < 0.001). Risky hsCRP levels ≥1.0 mg L-1 were found in 62.3 % of OC users versus 13.2 % non-OC users (OR = 10.9, 95 % CI 5.26-22.5, P < 0.001). Protective hsCRP levels (<0.5 mg L-1) were found in 17.0 % of OC users and in 64.5 % of non-OC users (OR = 0.11, 95 % CI 0.05-0.25, P < 0.001). OC use increased serum triglycerides (P < 0.001), total cholesterol (P = 0.027) and HDL cholesterol (P = 0.018), whereas haptoglobin was unaffected. Hours of exercise week-1 had a mild inverse association with hsCRP (P = 0.048) in non-OC users only. CONCLUSIONS OC use markedly elevated chronic low-grade inflammation in athletes, which could predispose to a higher inflammatory response to physical stress and elevate cardiovascular risk. Physical activity without OC use seemed to favor low hsCRP. Further research is needed to extend our results and to elucidate the potential effects on athletic performance of chronically elevated hsCRP. Our findings would be useful for sport physicians interpreting blood tests in athletes.
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Affiliation(s)
- Sabina Cauci
- Department of Medical and Biological Sciences, School of Medicine, University of Udine, Piazzale Kolbe 4, Udine, 33100, Italy.
| | - Maria Pia Francescato
- Department of Medical and Biological Sciences, School of Medicine, University of Udine, Piazzale Kolbe 4, Udine, 33100, Italy
| | - Francesco Curcio
- Department of Medical and Biological Sciences, School of Medicine, University of Udine, Piazzale Kolbe 4, Udine, 33100, Italy.,Clinical Analysis Laboratory, Department of Laboratory Medicine, Institute of Clinical Pathology, Santa Maria della Misericordia University-Hospital, Udine, 33100, Italy
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30
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Abstract
Due to declining estrogen levels during menopause, NAFLD prevalence is higher in postmenopausal women compared to in premenopausal women or in men. Postmenopausal women are more susceptible to weight gain, fat redistribution and dyslipidemia, all major hallmarks of metabolic syndrome associated with increased NAFLD risk. Gut microbiota plays important roles in development of gastrointestinal tract, metabolism and immunity. Host-microbe interactions allows regulation of a wide range of pathways that affect healthy and diseased physiology. Recent advances in - omics technologies, such as microbiome, transcriptome and metabolome analysis, provided evidence that estrogens and intestinal microbiota (IM) can collectively influence obesity, inflammatory disease, diabetes, and cancers. By understanding underlying mechanisms of estrogens and microbiota crosstalk, we might design dietary and pharmacological interventions to alleviate the metabolic syndrome and NAFLD.
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Affiliation(s)
- Karen L Chen
- Division of Nutritional Sciences, University of Illinois, Urbana-Champaign, Urbana, IL 61801, USA
| | - Zeynep Madak-Erdogan
- Division of Nutritional Sciences, University of Illinois, Urbana-Champaign, Urbana, IL 61801, USA; Department of Food Science and Human Nutrition, University of Illinois, Urbana-Champaign, Urbana, IL 61801, USA.
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Narumi M, Takahashi K, Yamatani H, Seino M, Yamanouchi K, Ohta T, Takahashi T, Kurachi H, Nagase S. Oxidative Stress in the Visceral Fat Is Elevated in Postmenopausal Women with Gynecologic Cancer. J Womens Health (Larchmt) 2018; 27:99-106. [DOI: 10.1089/jwh.2016.6301] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Megumi Narumi
- Department of Obstetrics and Gynecology, Yamagata University Faculty of Medicine, Yamagata, Japan
| | - Kazuhiro Takahashi
- Department of Obstetrics and Gynecology, Yamagata University Faculty of Medicine, Yamagata, Japan
| | - Hizuru Yamatani
- Department of Obstetrics and Gynecology, Yamagata University Faculty of Medicine, Yamagata, Japan
| | - Manabu Seino
- Department of Obstetrics and Gynecology, Yamagata University Faculty of Medicine, Yamagata, Japan
| | - Keiko Yamanouchi
- Department of Obstetrics and Gynecology, Yamagata University Faculty of Medicine, Yamagata, Japan
| | - Tsuyoshi Ohta
- Department of Obstetrics and Gynecology, Yamagata University Faculty of Medicine, Yamagata, Japan
| | - Toshifumi Takahashi
- Department of Obstetrics and Gynecology, Yamagata University Faculty of Medicine, Yamagata, Japan
| | - Hirohisa Kurachi
- Osaka Medical Center and Research Institute for Maternal and Child Health, Izumi, Osaka, Japan
| | - Satoru Nagase
- Department of Obstetrics and Gynecology, Yamagata University Faculty of Medicine, Yamagata, Japan
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Olvera‑Sandoval C, Betanzos‑Cabrera G, Casillas‑Pe�uelas R, Quintanar J. Changes in body composition and mRNA expression of ghrelin and lipoprotein lipase in rats treated with leuprolide acetate, a GnRH agonist. Exp Ther Med 2017; 15:592-598. [DOI: 10.3892/etm.2017.5352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2017] [Accepted: 09/06/2017] [Indexed: 11/06/2022] Open
Affiliation(s)
- Carlos Olvera‑Sandoval
- Neurophysiology Laboratory, Department of Physiology and Pharmacology, Basic Science Center, Universidad Aut�noma de Aguascalientes, Ciudad Universitaria Aguascalientes, Ags 20131, M�xico
| | - Gabriel Betanzos‑Cabrera
- Nutrigenomics Laboratory, Academic Area of Nutrition, Health Sciences Institute, Universidad Aut�noma del Estado de Hidalgo, Pachuca de Soto, Hgo 42039, M�xico
| | - Rafael Casillas‑Pe�uelas
- Department of Food Technology, Universidad Aut�noma de Aguascalientes, Ciudad Universitaria Aguascalientes, Ags 20131, M�xico
| | - J. Quintanar
- Neurophysiology Laboratory, Department of Physiology and Pharmacology, Basic Science Center, Universidad Aut�noma de Aguascalientes, Ciudad Universitaria Aguascalientes, Ags 20131, M�xico
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HDL-cholesterol concentration in pregnant Chinese Han women of late second trimester associated with genetic variants in CETP, ABCA1, APOC3, and GALNT2. Oncotarget 2017; 8:56737-56746. [PMID: 28915626 PMCID: PMC5593597 DOI: 10.18632/oncotarget.18128] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Accepted: 04/25/2017] [Indexed: 11/25/2022] Open
Abstract
Objective To investigate whether HDL-C level in pregnant Chinese Han women of late second trimester correlated with loci in high-density lipoprotein-cholesterol (HDL-C)-related genes found in genome-wide association studies (GWAS). Methods Seven single-nucleotide polymorphisms (rs3764261 in CETP, rs1532085 in LIPC, rs7241918 in LIPG, rs1883025 in ABCA1, rs4225 in APOC3, rs1059611 in LPL, and rs16851339 in GALNT2) were genotyped using the Sequenom MassArray system for 1,884 pregnant women. Results The following polymorphisms were statistically associated with HDL-C level after adjusting for age, gestational week, pre-pregnancy BMI and state of GDM or HOMAIR: (i) rs3764261 (b = -0.055 mmol/L, 95% CI -0.101 to -0.008, p = 0.021), (ii) rs1883025 (b = -0.054 mmol/L, 95% CI -0.097 to -0.012, p = 0.013), (iii) rs4225 (b = -0.071 mmol/L, 95% CI -0.116 to -0.027, p = 1.79E-3) and (iv) rs16851339 (b = -0.064 mmol/L, 95% CI -0.120 to -0.008, p = 0.025). The more risk alleles the pregnant women have, the lower the plasma HDL-C levels of the subjects are. Conclusions Several risk alleles found to be related to HDL-C in GWAS are also associated with HDL-C levels in pregnant Chinese Han women and these risk loci contribute additively to low HDL-C levels.
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Adiponectin protects against development of metabolic disturbances in a PCOS mouse model. Proc Natl Acad Sci U S A 2017; 114:E7187-E7196. [PMID: 28790184 DOI: 10.1073/pnas.1708854114] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Adiponectin, together with adipocyte size, is the strongest factor associated with insulin resistance in women with polycystic ovary syndrome (PCOS). This study investigates the causal relationship between adiponectin levels and metabolic and reproductive functions in PCOS. Prepubertal mice overexpressing adiponectin from adipose tissue (APNtg), adiponectin knockouts (APNko), and their wild-type (WT) littermate mice were continuously exposed to placebo or dihydrotestosterone (DHT) to induce PCOS-like traits. As expected, DHT exposure led to reproductive dysfunction, as judged by continuous anestrus, smaller ovaries with a decreased number of corpus luteum, and an increased number of cystic/atretic follicles. A two-way between-groups analysis showed that there was a significant main effect for DHT exposure, but not for genotype, indicating adiponectin does not influence follicle development. Adiponectin had, however, some protective effects on ovarian function. Similar to in many women with PCOS, DHT exposure led to reduced adiponectin levels, larger adipocyte size, and reduced insulin sensitivity in WTs. APNtg mice remained metabolically healthy despite DHT exposure, while APNko-DHT mice were even more insulin resistant than their DHT-exposed littermate WTs. DHT exposure also reduced the mRNA expression of genes involved in metabolic pathways in gonadal adipose tissue of WT and APNko, but this effect of DHT was not observed in APNtg mice. Moreover, APNtg-DHT mice displayed increased pancreatic mRNA levels of insulin receptors, Pdx1 and Igf1R, suggesting adiponectin stimulates beta cell viability/hyperplasia in the context of PCOS. In conclusion, adiponectin improves metabolic health but has only minor effects on reproductive functions in this PCOS-like mouse model.
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High-Fat Diet Induces Unexpected Fatal Uterine Infections in Mice with aP2-Cre-mediated Deletion of Estrogen Receptor Alpha. Sci Rep 2017; 7:43269. [PMID: 28233809 PMCID: PMC5324142 DOI: 10.1038/srep43269] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Accepted: 01/23/2017] [Indexed: 11/08/2022] Open
Abstract
Estrogen receptor alpha (ERα) is a major regulator of metabolic processes in obesity. In this study we aimed to define the relevance of adipose tissue ERα during high-fat diet (HFD)-induced obesity using female aP2-Cre−/+/ERαfl/fl mice (atERαKO). HFD did not affect body weight or glucose metabolism in atERαKO- compared to control mice. Surprisingly, HFD feeding markedly increased mortality in atERαKO mice associated with a destructive bacterial infection of the uterus driven by commensal microbes, an alteration likely explaining the absence of a metabolic phenotype in HFD-fed atERαKO mice. In order to identify a mechanism of the exaggerated uterine infection in HFD-fed atERαKO mice, a marked reduction of uterine M2-macrophages was detected, a cell type relevant for anti-microbial defence. In parallel, atERαKO mice exhibited elevated circulating estradiol (E2) acting on E2-responsive tissue/cells such as macrophages. Accompanying cell culture experiments showed that despite E2 co-administration stearic acid (C18:0), a fatty acid elevated in plasma from HFD-fed atERαKO mice, blocks M2-polarization, a process known to be enhanced by E2. In this study we demonstrate an unexpected phenotype in HFD-fed atERαKO involving severe uterine bacterial infections likely resulting from a previously unknown negative interference between dietary FAs and ERα-signaling during anti-microbial defence.
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Newell-Fugate AE. The role of sex steroids in white adipose tissue adipocyte function. Reproduction 2017; 153:R133-R149. [PMID: 28115579 DOI: 10.1530/rep-16-0417] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 01/16/2017] [Accepted: 01/20/2017] [Indexed: 12/13/2022]
Abstract
With the increasing knowledge that gender influences normal physiology, much biomedical research has begun to focus on the differential effects of sex on tissue function. Sexual dimorphism in mammals is due to the combined effects of both genetic and hormonal factors. Hormonal factors are mutable particularly in females in whom the estrous cycle dominates the hormonal milieu. Given the severity of the obesity epidemic and the fact that there are differences in the obesity rates in men and women, the role of sex in white adipose tissue function is being recognized as increasingly important. Although sex differences in white adipose tissue distribution are well established, the mechanisms affecting differential function of adipocytes within white adipose tissue in males and females remain largely understudied and poorly understood. One of the largest differences in the endocrine environment in males and females is the concentration of circulating androgens and estrogens. This review examines the effects of androgens and estrogens on lipolysis/lipogenesis, adipocyte differentiation, insulin sensitivity and adipokine production in adipocytes from white adipose tissue with a specific emphasis on the sexual dimorphism of adipocyte function in white adipose tissue during both health and disease.
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Affiliation(s)
- A E Newell-Fugate
- Department of Veterinary Physiology and PharmacologyTexas A&M University, College Station, Texas, USA
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Issa CM, Abu Khuzam RH. In vitro fertilization-induced hypertriglyceridemia with secondary acute pancreatitis and diabetic ketoacidosis. SAGE Open Med Case Rep 2017; 5:2050313X16689209. [PMID: 28228964 PMCID: PMC5308422 DOI: 10.1177/2050313x16689209] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Accepted: 12/20/2016] [Indexed: 12/26/2022] Open
Abstract
Introduction: In vitro fertilization is becoming more and more popular lately, as such light is to be shed on any possible related complication. One of these complications is the possible hormonal effect on the lipid profile of the patients. Case presentation: We present a case of a 39-year-old woman with no prior or family history of dyslipidemia, who presented with post in vitro fertilization severe hypertriglyceridemia and secondary acute pancreatitis and diabetic ketoacidosis. Discussion of the case is followed by a brief review of the literature related to in vitro fertilization–induced hypertriglyceridemia. Conclusion: This is, up to our knowledge, the sixth reported case of in vitro fertilization–induced hypertriglyceridemia with secondary acute pancreatitis. This is a serious and life-threatening complication. As such, it might be wise at least in high-risk patients (such as patients with diabetes mellitus, polycystic ovaries syndrome, obesity, and family and personal history of dyslipidemia) to screen for lipid abnormalities before initiating in vitro fertilization and monitor these levels afterward.
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Rubinow KB. Estrogens and Body Weight Regulation in Men. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 1043:285-313. [PMID: 29224100 DOI: 10.1007/978-3-319-70178-3_14] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Our understanding of the metabolic roles of sex steroids in men has evolved substantially over recent decades. Whereas testosterone once was believed to contribute to metabolic risk in men, the importance of adequate androgen exposure for the maintenance of metabolic health has been demonstrated unequivocally. A growing body of evidence now also supports a critical role for estrogens in metabolic regulation in men. Recent data from clinical intervention studies indicate that estradiol may be a stronger determinant of adiposity than testosterone in men, and even short-term estradiol deprivation contributes to fat mass accrual. The following chapter will outline findings to date regarding the mechanisms, whereby estrogens contribute to the regulation of body weight and adiposity in men. It will present emergent clinical data as well as preclinical findings that reveal mechanistic insights into estrogen-mediated regulation of body composition. Findings in both males and females will be reviewed, to draw comparisons and to highlight knowledge gaps regarding estrogen action specifically in males. Finally, the clinical relevance of estrogen exposure in men will be discussed, particularly in the context of a rising global prevalence of obesity and expanding clinical use of sex steroid-based therapies in men.
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Affiliation(s)
- Katya B Rubinow
- Division of Metabolism, Endocrinology, and Nutrition Department of Medicine, University of Washington, Seattle, WA, USA.
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Effect of Cross-Sex Hormonal Replacement on Antioxidant Enzymes in Rat Retroperitoneal Fat Adipocytes. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:1527873. [PMID: 27630756 PMCID: PMC5007368 DOI: 10.1155/2016/1527873] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Accepted: 07/25/2016] [Indexed: 12/19/2022]
Abstract
We report the effect of cross-sex hormonal replacement on antioxidant enzymes from rat retroperitoneal fat adipocytes. Eight rats of each gender were assigned to each of the following groups: control groups were intact female or male (F and M, resp.). Experimental groups were ovariectomized F (OvxF), castrated M (CasM), OvxF plus testosterone (OvxF + T), and CasM plus estradiol (CasM + E2) groups. After sacrifice, retroperitoneal fat was dissected and processed for histology. Adipocytes were isolated and the following enzymatic activities were determined: Cu-Zn superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), glutathione-S-transferase (GST), and glutathione reductase (GR). Also, glutathione (GSH) and lipid peroxidation (LPO) were measured. In OvxF, retroperitoneal fat increased and adipocytes were enlarged, while in CasM rats a decrease in retroperitoneal fat and small adipocytes are observed. The cross-sex hormonal replacement in F rats was associated with larger adipocytes and a further decreased activity of Cu-Zn SOD, CAT, GPx, GST, GR, and GSH, in addition to an increase in LPO. CasM + E2 exhibited the opposite effects showing further activation antioxidant enzymes and decreases in LPO. In conclusion, E2 deficiency favors an increase in retroperitoneal fat and large adipocytes. Cross-sex hormonal replacement in F rats aggravates the condition by inhibiting antioxidant enzymes.
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Pecks U, Rath W, Kleine-Eggebrecht N, Maass N, Voigt F, Goecke TW, Mohaupt MG, Escher G. Maternal Serum Lipid, Estradiol, and Progesterone Levels in Pregnancy, and the Impact of Placental and Hepatic Pathologies. Geburtshilfe Frauenheilkd 2016; 76:799-808. [PMID: 27582578 DOI: 10.1055/s-0042-107078] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
OBJECTIVE Lipids and steroid hormones are closely linked. While cholesterol is the substrate for (placental) steroid hormone synthesis, steroid hormones regulate hepatic lipid production. The aim of this study was to quantify circulating steroid hormones and lipid metabolites, and to characterize their interactions in normal and pathological pregnancies with a focus on hepatic and placental pathologies. METHODS A total of 216 serum samples were analyzed. Group A consisted of 32 patients with uncomplicated pregnancies who were analyzed at three different time-points in pregnancy (from the first through the third trimester) and once post partum. Group B consisted of 36 patients (24th to 42nd week of gestation) with pregnancy pathologies (IUGR n = 10, preeclampsia n = 13, HELLP n = 6, intrahepatic cholestasis n = 7) and 31 controls with uncomplicated pregnancies. Steroid profiles including estradiol, progesterone, and dehydroepiandrosterone were measured by GC-MS and compared with lipid concentrations. RESULTS In Group A, cholesterol and triglycerides correlated positively with estradiol (cholesterol ρ = 0.50, triglycerides ρ = 0.57) and progesterone (ρ = 0.49, ρ = 0.53) and negatively with dehydroepiandrosterone (ρ = - 0.47, ρ = - 0.38). Smoking during pregnancy affected estradiol concentrations, leading to lower levels in the third trimester compared to non-smoking patients (p < 0.05). In Group B, cholesterol levels were found to be lower in IUGR pregnancies and in patients with HELLP syndrome compared to controls (p < 0.05). Steroid hormone concentrations of estradiol (p < 0.05) and progesterone (p < 0.01) were lower in pregnancies with IUGR. DISCUSSION Lipid and steroid levels were affected most in IUGR pregnancies, while only minor changes in concentrations were observed for other pregnancy-related disorders. Each of the analyzed entities displayed specific changes. However, since the changes were most obvious in pregnancies complicated by IUGR and only minor changes were observed in pregnancies where patients had impaired liver function, our data suggests that placental rather than maternal hepatic function strongly determines lipid and steroid levels in pregnancy.
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Affiliation(s)
- U Pecks
- Department of Obstetrics and Gynecology, University Hospital of the RWTH, Aachen, Germany; Department of Obstetrics and Gynecology, University Hospital Schleswig-Holstein, Kiel, Germany
| | - W Rath
- Department of Obstetrics and Gynecology, University Hospital Schleswig-Holstein, Kiel, Germany
| | - N Kleine-Eggebrecht
- Department of Obstetrics and Gynecology, University Hospital of the RWTH, Aachen, Germany
| | - N Maass
- Department of Obstetrics and Gynecology, University Hospital Schleswig-Holstein, Kiel, Germany
| | - F Voigt
- Department of Obstetrics and Gynecology, University Hospital of the RWTH, Aachen, Germany
| | - T W Goecke
- Department of Obstetrics and Gynecology, University Hospital of the RWTH, Aachen, Germany
| | - M G Mohaupt
- Department of Nephrology, Hypertension and Clinical Pharmacology and Department of Clinical Research, Inselspital University Hospital Bern, Bern, Switzerland
| | - G Escher
- Department of Nephrology, Hypertension and Clinical Pharmacology and Department of Clinical Research, Inselspital University Hospital Bern, Bern, Switzerland
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Larson CJ, Osburn DL, Schmitz K, Giampa L, Mong SM, Marschke K, Seidel HM, Rosen J, Negro-Vilar A. Peptide Binding Identifies an ERα Conformation That Generates Selective Activity in Multiple In Vitro Assays. ACTA ACUST UNITED AC 2016; 10:590-8. [PMID: 16103420 DOI: 10.1177/1087057105275983] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Drugs such as tamoxifen, which act at the estrogen receptor (ER), have very different in vitro and in vivo effects from those of the native hormone. Previous research has established that different ligands induce distinct conformational changes in the ER, thus affecting the interactions of the receptor with cell-specific coactivating or corepressing proteins (cofactors) and estrogen response elements (EREs), thus potentially driving differing biological effects. Affinity-selected peptides have been used to probe the conformational changes that occur within the ER upon binding various ligands. In this study, the authors characterize the ability of several peptides to be recruited to liganded ER under cellular conditions. Approximating ER conformation via recruitment of this peptide to the ER is concluded to be a better predictor of the agonist nature of an ER ligand under these different cellular contexts than is a canonical cotransfection transactivation assay.
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Affiliation(s)
- Christopher J Larson
- Department of Molecular & Cell Biology and New Leads Discovery Ligand Pharmaceuticals, San Diego, CA 92121, USA
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Zhu H, Wang X, Pan H, Dai Y, Li N, Wang L, Yang H, Gong F. The Mechanism by Which Safflower Yellow Decreases Body Fat Mass and Improves Insulin Sensitivity in HFD-Induced Obese Mice. Front Pharmacol 2016; 7:127. [PMID: 27242533 PMCID: PMC4876777 DOI: 10.3389/fphar.2016.00127] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 05/05/2016] [Indexed: 12/22/2022] Open
Abstract
Objectives: Safflower yellow (SY) is the main effective ingredient of Carthamus tinctorius L. It has been reported that SY plays an important role in anti-inflammation, anti-platelet aggregation, and inhibiting thrombus formation. In present study, we try to investigate the effects of SY on body weight, body fat mass, insulin sensitivity in high fat diet (HFD)-induced obese mice. Methods: HFD-induced obese male ICR mice were intraperitoneally injected with SY (120 mg kg−1) daily. Eight weeks later, intraperitoneal insulin tolerance test (IPITT), and intraperitoneal glucose tolerance test (IPGTT) were performed, and body weight, body fat mass, serum insulin levels were measured. The expression of glucose and lipid metabolic related genes in white adipose tissue (WAT) were determined by RT-qPCR and western blot technologies. Results: The administration obese mice with SY significantly reduced the body fat mass of HFD-induced obese mice (P < 0.05). IPITT test showed that the insulin sensitivity of SY treated obese mice were evidently improved. The mRNA levels of insulin signaling pathway related genes including insulin receptor substrate 1(IRS1), PKB protein kinase (AKT), glycogen synthase kinase 3β (GSK3β) and forkhead box protein O1(FOXO1) in mesenteric WAT of SY treated mice were significantly increased to 1.9- , 2.8- , 3.3- , and 5.9-folds of that in HFD-induced control obese mice, respectively (P < 0.05). The protein levels of AKT and GSK3β were also significantly increased to 3.0 and 5.2-folds of that in HFD-induced control obese mice, respectively (P < 0.05). Meanwhile, both the mRNA and protein levels of peroxisome proliferator-activated receptorgamma coactivator 1α (PGC1α) in inguinal subcutaneous WAT of SY group were notably increased to 2.5 and 3.0-folds of that in HFD-induced control obese mice (P < 0.05). Conclusions: SY significantly reduce the body fat mass, fasting blood glucose and increase insulin sensitivity of HFD-induced obese mice. The possible mechanism is to promote the browning of subcutaneous WAT and activate the IRS1/AKT/GSK3β pathway in visceral WAT. Our study provides an important experimental evidence for developing SY as a potential anti-obesity and anti-diabetic drug.
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Affiliation(s)
- Huijuan Zhu
- Key Laboratory of Endocrinology of National Health and Family Planning Commission, Department of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Science Beijing, China
| | - Xiangqing Wang
- Key Laboratory of Endocrinology of National Health and Family Planning Commission, Department of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Science Beijing, China
| | - Hui Pan
- Key Laboratory of Endocrinology of National Health and Family Planning Commission, Department of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Science Beijing, China
| | - Yufei Dai
- Key Laboratory of Endocrinology of National Health and Family Planning Commission, Department of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Science Beijing, China
| | - Naishi Li
- Key Laboratory of Endocrinology of National Health and Family Planning Commission, Department of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Science Beijing, China
| | - Linjie Wang
- Key Laboratory of Endocrinology of National Health and Family Planning Commission, Department of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Science Beijing, China
| | - Hongbo Yang
- Key Laboratory of Endocrinology of National Health and Family Planning Commission, Department of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Science Beijing, China
| | - Fengying Gong
- Key Laboratory of Endocrinology of National Health and Family Planning Commission, Department of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Science Beijing, China
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Bertuloso BD, Podratz PL, Merlo E, de Araújo JFP, Lima LCF, de Miguel EC, de Souza LN, Gava AL, de Oliveira M, Miranda-Alves L, Carneiro MTWD, Nogueira CR, Graceli JB. Tributyltin chloride leads to adiposity and impairs metabolic functions in the rat liver and pancreas. Toxicol Lett 2015; 235:45-59. [PMID: 25819109 DOI: 10.1016/j.toxlet.2015.03.009] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Revised: 02/23/2015] [Accepted: 03/21/2015] [Indexed: 12/13/2022]
Abstract
Tributyltin chloride (TBT) is an environmental contaminant used in antifouling paints of boats. Endocrine disruptor effects of TBT are well established in animal models. However, the adverse effects on metabolism are less well understood. The toxicity of TBT in the white adipose tissue (WAT), liver and pancreas of female rats were assessed. Animals were divided into control and TBT (0.1 μg/kg/day) groups. TBT induced an increase in the body weight of the rats by the 15th day of oral exposure. The weight gain was associated with high parametrial (PR) and retroperitoneal (RP) WAT weights. TBT-treatment increased the adiposity, inflammation and expression of ERα and PPARγ proteins in both RP and PR WAT. In 3T3-L1 cells, estrogen treatment reduced lipid droplets accumulation, however increased the ERα protein expression. In contrast, TBT-treatment increased the lipid accumulation and reduced the ERα expression. WAT metabolic changes led to hepatic inflammation, lipid accumulation, increase of PPARγ and reduction of ERα protein expression. Accordingly, there were increases in the glucose tolerance and insulin sensitivity tests with increases in the number of pancreatic islets and insulin levels. These findings suggest that TBT leads to adiposity in WAT specifically, impairing the metabolic functions of the liver and pancreas.
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Affiliation(s)
- Bruno D Bertuloso
- Department of Morphology, Federal University of Espírito Santo, Brazil
| | | | - Eduardo Merlo
- Department of Morphology, Federal University of Espírito Santo, Brazil
| | | | - Leandro C F Lima
- Institute of Biological Sciences, Federal University of Minas Gerais, Brazil
| | - Emilio C de Miguel
- Department of Biochemistry and Molecular Biology, Federal University of Ceará, Brazil
| | | | - Agata L Gava
- Department of Physiology, Federal University of Espírito Santo, Brazil
| | - Miriane de Oliveira
- Department of Internal Medicine, Botucatu School of Medicine, University of São Paulo State, Brazil
| | - Leandro Miranda-Alves
- Experimental Endocrinology Research Group, Institute of Biomedical Sciences, RJ, Brazil
| | | | - Celia R Nogueira
- Department of Internal Medicine, Botucatu School of Medicine, University of São Paulo State, Brazil
| | - Jones B Graceli
- Department of Morphology, Federal University of Espírito Santo, Brazil.
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Bushueva OY, Stetskaya TA, Korogodina TV, Ivanov VP, Polonikov AV. Investigation of the association between the HindIII polymorphism of the LPL gene and the Taq1b polymorphism of the CETP gene with the risk of atherothrombotic stroke in the dwellers of Central Russia. TERAPEVT ARKH 2015; 87:86-91. [DOI: 10.17116/terarkh201587886-91] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Intrinsic and extrinsic regulation of cardiac lipoprotein lipase following diabetes. Biochim Biophys Acta Mol Cell Biol Lipids 2014; 1851:163-71. [PMID: 25463481 DOI: 10.1016/j.bbalip.2014.11.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Revised: 11/10/2014] [Accepted: 11/12/2014] [Indexed: 02/07/2023]
Abstract
Cardiac lipoprotein lipase (LPL) is a pivotal enzyme controlling heart metabolism by providing the majority of fatty acids required by this organ. From activation in cardiomyocytes to secretion to the vascular lumen, cardiac LPL is regulated by multiple pathways, which are altered during diabetes. Hence, dimerization/activation of LPL is modified following diabetes, a process controlled by lipase maturation factor 1. The role of AMP-activated protein kinase, protein kinase D, and heparan sulfate proteoglycans, intrinsic factors that regulate the intracellular transport of LPL is also shifted, and is discussed. More recent studies have identified several exogenous factors released from endothelial cells (EC) and adipose tissue that are required for proper functioning of LPL. In response to hyperglycemia, both active and latent heparanase are released from EC to facilitate LPL secretion. Diabetes also increased the expression of glycosylphosphatidylinositol-anchored high density lipoprotein-binding protein 1 (GPIHBP1) in EC, which mediates the transport of LPL across EC. Angiopoietin-like protein 4 secreted from the adipose tissue has the potential to reduce coronary LPL activity. Knowledge of these intrinsic and extrinsic factors could be used develop therapeutic targets to normalize LPL function, and maintain cardiac energy homeostasis after diabetes.
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Li Y, He PP, Zhang DW, Zheng XL, Cayabyab FS, Yin WD, Tang CK. Lipoprotein lipase: from gene to atherosclerosis. Atherosclerosis 2014; 237:597-608. [PMID: 25463094 DOI: 10.1016/j.atherosclerosis.2014.10.016] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Revised: 10/13/2014] [Accepted: 10/13/2014] [Indexed: 01/21/2023]
Abstract
Lipoprotein lipase (LPL) is a key enzyme in lipid metabolism and responsible for catalyzing lipolysis of triglycerides in lipoproteins. LPL is produced mainly in adipose tissue, skeletal and heart muscle, as well as in macrophage and other tissues. After synthesized, it is secreted and translocated to the vascular lumen. LPL expression and activity are regulated by a variety of factors, such as transcription factors, interactive proteins and nutritional state through complicated mechanisms. LPL with different distributions may exert distinct functions and have diverse roles in human health and disease with close association with atherosclerosis. It may pose a pro-atherogenic or an anti-atherogenic effect depending on its locations. In this review, we will discuss its gene, protein, synthesis, transportation and biological functions, and then focus on its regulation and relationship with atherosclerosis and potential underlying mechanisms. The goal of this review is to provide basic information and novel insight for further studies and therapeutic targets.
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Affiliation(s)
- Yuan Li
- Institute of Cardiovascular Research, Key Laboratory for Atherosclerology of Hunan Province, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Discovery, Life Science Research Center, University of South China, Hengyang, Hunan 421001, China
| | - Ping-Ping He
- Institute of Cardiovascular Research, Key Laboratory for Atherosclerology of Hunan Province, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Discovery, Life Science Research Center, University of South China, Hengyang, Hunan 421001, China; School of Nursing, University of South China, Hengyang, Hunan 421001, China
| | - Da-Wei Zhang
- Department of Pediatrics and Group on the Molecular and Cell Biology of Lipids, University of Alberta, Edmonton, Alberta T6G 2S2, Canada
| | - Xi-Long Zheng
- Department of Biochemistry and Molecular Biology, The Libin Cardiovascular Institute of Alberta, The Cumming School of Medicine, The University of Calgary, Health Sciences Center, 3330 Hospital Dr NW, Calgary, Alberta T2N 4N1, Canada
| | - Fracisco S Cayabyab
- Department of Surgery, College of Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Wei-Dong Yin
- Institute of Cardiovascular Research, Key Laboratory for Atherosclerology of Hunan Province, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Discovery, Life Science Research Center, University of South China, Hengyang, Hunan 421001, China.
| | - Chao-Ke Tang
- Institute of Cardiovascular Research, Key Laboratory for Atherosclerology of Hunan Province, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Discovery, Life Science Research Center, University of South China, Hengyang, Hunan 421001, China.
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Reduced oocyte and embryo quality in response to elevated non-esterified fatty acid concentrations: A possible pathway to subfertility? Anim Reprod Sci 2014; 149:19-29. [DOI: 10.1016/j.anireprosci.2014.07.015] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2014] [Revised: 07/07/2014] [Accepted: 07/08/2014] [Indexed: 12/19/2022]
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Pedram A, Razandi M, Lewis M, Hammes S, Levin ER. Membrane-localized estrogen receptor α is required for normal organ development and function. Dev Cell 2014; 29:482-90. [PMID: 24871949 DOI: 10.1016/j.devcel.2014.04.016] [Citation(s) in RCA: 132] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Revised: 02/18/2014] [Accepted: 04/14/2014] [Indexed: 12/18/2022]
Abstract
Steroid receptors are found in discrete cellular locations, but it is unknown whether extranuclear pools are necessary for normal organ development. To assess this, we developed a point mutant estrogen receptor α (ERα) knockin mouse (C451A) that precludes palmitoylation and membrane trafficking of the steroid receptor in all organs. Homozygous knockin female mice (nuclear-only ERα [NOER]) show loss of rapid signaling that occurs from membrane ERα in wild-type mice. Multiple developmental abnormalities were found, including infertility, relatively hypoplastic uteri, abnormal ovaries, stunted mammary gland ductal development, and abnormal pituitary hormone regulation in NOER mice. These abnormalities were rescued in heterozygous NOER mice that were comparable to wild-type mice. mRNAs implicated in organ development were often poorly stimulated by estrogen only in homozygous NOER mice. We conclude that many organs require membrane ERα and resulting signal transduction to collaborate with nuclear ERα for normal development and function.
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Affiliation(s)
- Ali Pedram
- Division of Endocrinology, Department of Medicine, University of California, Irvine, Irvine, CA 92717, USA
| | - Mahnaz Razandi
- Department of Veterans Affairs Medical Center, Long Beach, Long Beach, CA 90822, USA
| | - Michael Lewis
- Department of Cellular Biology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Stephen Hammes
- Department of Medicine, University of Rochester, Rochester, NY 14642, USA
| | - Ellis R Levin
- Division of Endocrinology, Department of Medicine, University of California, Irvine, Irvine, CA 92717, USA; Department of Veterans Affairs Medical Center, Long Beach, Long Beach, CA 90822, USA.
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Pedroni SMA, Turban S, Kipari T, Dunbar DR, McInnes K, Saunders PTK, Morton NM, Norman JE. Pregnancy in obese mice protects selectively against visceral adiposity and is associated with increased adipocyte estrogen signalling. PLoS One 2014; 9:e94680. [PMID: 24732937 PMCID: PMC3986097 DOI: 10.1371/journal.pone.0094680] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2013] [Accepted: 03/17/2014] [Indexed: 12/26/2022] Open
Abstract
Maternal obesity is linked with increased adverse pregnancy outcomes for both mother and child. The metabolic impact of excessive fat within the context of pregnancy is not fully understood. We used a mouse model of high fat (HF) feeding to induce maternal obesity to identify adipose tissue-mediated mechanisms driving metabolic dysfunction in pregnant and non-pregnant obese mice. As expected, chronic HF-feeding for 12 weeks preceding pregnancy increased peripheral (subcutaneous) and visceral (mesenteric) fat mass. However, unexpectedly at late gestation (E18.5) HF-fed mice exhibited a remarkable normalization of visceral but not peripheral adiposity, with a 53% reduction in non-pregnant visceral fat mass expressed as a proportion of body weight (P<0.001). In contrast, in control animals, pregnancy had no effect on visceral fat mass proportion. Obesity exaggerated glucose intolerance at mid-pregnancy (E14.5). However by E18.5, there were no differences, in glucose tolerance between obese and control mice. Transcriptomic analysis of visceral fat from HF-fed dams at E18.5 revealed reduced expression of genes involved in de novo lipogenesis (diacylglycerol O-acyltransferase 2 - Dgat2) and inflammation (chemokine C-C motif ligand 2 - Ccl2) and upregulation of estrogen receptor α (ERα) compared to HF non pregnant. Attenuation of adipose inflammation was functionally confirmed by a 45% reduction of CD11b+CD11c+ adipose tissue macrophages (expressed as a proportion of all stromal vascular fraction cells) in HF pregnant compared to HF non pregnant animals (P<0.001). An ERα selective agonist suppressed both de novo lipogenesis and expression of lipogenic genes in adipocytes in vitro. These data show that, in a HF model of maternal obesity, late gestation is associated with amelioration of visceral fat hypertrophy, inflammation and glucose intolerance, and suggest that these effects are mediated in part by elevated visceral adipocyte ERα signaling.
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Affiliation(s)
- Silvia M. A. Pedroni
- Tommy's Centre for Maternal and Fetal Health, The University of Edinburgh, Queen's Medical Research Institute, Edinburgh, United Kingdom
- MRC Centre for Reproductive Health, The University of Edinburgh, Queen's Medical Research Institute, Edinburgh, United Kingdom
| | - Sophie Turban
- Endocrinology Unit, University/BHF Centre for Cardiovascular Science, The University of Edinburgh, Queen's Medical Research Institute, Edinburgh, United Kingdom
| | - Tiina Kipari
- Endocrinology Unit, University/BHF Centre for Cardiovascular Science, The University of Edinburgh, Queen's Medical Research Institute, Edinburgh, United Kingdom
| | - Donald R. Dunbar
- Endocrinology Unit, University/BHF Centre for Cardiovascular Science, The University of Edinburgh, Queen's Medical Research Institute, Edinburgh, United Kingdom
| | - Kerry McInnes
- Endocrinology Unit, University/BHF Centre for Cardiovascular Science, The University of Edinburgh, Queen's Medical Research Institute, Edinburgh, United Kingdom
| | - Philippa T. K. Saunders
- MRC Centre for Reproductive Health, The University of Edinburgh, Queen's Medical Research Institute, Edinburgh, United Kingdom
| | - Nicholas M. Morton
- Molecular Metabolism Group, University/BHF Centre for Cardiovascular Science, The University of Edinburgh, Queen's Medical Research Institute, Edinburgh, United Kingdom
| | - Jane E. Norman
- Tommy's Centre for Maternal and Fetal Health, The University of Edinburgh, Queen's Medical Research Institute, Edinburgh, United Kingdom
- MRC Centre for Reproductive Health, The University of Edinburgh, Queen's Medical Research Institute, Edinburgh, United Kingdom
- * E-mail:
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Abraham M, Mitchell J, Simsovits D, Gasperino J. Hypertriglyceridemic Pancreatitis Caused by the Oral Contraceptive Agent Estrostep. J Intensive Care Med 2014; 30:303-7. [PMID: 24671004 DOI: 10.1177/0885066614528083] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Accepted: 01/13/2014] [Indexed: 12/18/2022]
Abstract
Norethindrone acetate/ethinyl estradiol (Estrostep; Warner Chilcott, Rockaway, New Jersey) is an "estrophasic" type of oral contraceptive, which combines a continuous low progestin dose with a gradually increasing estrogen dose. In clinical trials, this medication failed to produce clinically significant changes in serum lipid levels. We report a case of severe hypertriglyceridemia-induced acute pancreatitis in a 24-year-old woman caused by Estrostep, occurring nearly 10 years after she began using the drug. The patient was admitted to the medical intensive care unit (ICU) for aggressive volume resuscitation and management of severe electrolyte abnormalities. Laboratory studies obtained on admission indicated severe hypertriglyceridemia (2,200 mg/dL), hyponatremia (120 mEq/L), and hypocalcemia (0.78 mmol/L). Amylase and lipase levels were also elevated (193 and 200 U/L, respectively). Ranson score calculated after 48 hours of admission was 4, and her Acute Physiology and Chronic Health Evaluation (APACHE) IV score was 35. Treatment included an insulin infusion, ω-3 fatty acid esters, and gemfibrozil. The insulin infusion reduced serum triglyceride levels by 50% after 1 day of treatment and to 355 mg/dL by day 7 of her ICU course. We believe that this is the first reported case of severe, acute hypertriglyceridemia-induced pancreatitis caused by this medication.
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Affiliation(s)
- Mary Abraham
- Department of Medicine, Section of Critical Care Medicine, Drexel University College of Medicine, Philadelphia, PA, USA
| | - Jennifer Mitchell
- Department of Medicine, Section of Critical Care Medicine, Drexel University College of Medicine, Philadelphia, PA, USA
| | - Debra Simsovits
- Department of Medicine, Section of Critical Care Medicine, Drexel University College of Medicine, Philadelphia, PA, USA
| | - James Gasperino
- Department of Medicine, Section of Critical Care Medicine, Drexel University College of Medicine, Philadelphia, PA, USA
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