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Conti G, Zingaretti N, Busato A, Quintero Sierra L, Amuso D, Scarano A, Iorio EL, Amore R, Ossanna R, Negri A, Conti A, Veronese S, De Francesco F, Riccio M, Parodi PC, Sbarbati A. Gluteal femoral subcutaneous and dermal adipose tissue in female. J Cosmet Dermatol 2024; 23:2726-2735. [PMID: 38638000 DOI: 10.1111/jocd.16314] [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: 11/17/2023] [Revised: 03/05/2024] [Accepted: 03/25/2024] [Indexed: 04/20/2024]
Abstract
BACKGROUND During the sexual maturation, gluteal femoral adipose tissue is subjected to numerous modifications, not observable in other regions, in particular in women and less in men. Other authors described this region, but they used imaging techniques having lower resolution, than MRI proposed in this study. High resolution imaging techniques might provide important and more detailed information about the anatomy of gluteal femoral region. METHODS This study has been performed using 7 T-magnetic resonance imaging and ultrastructural analysis in order to provide accurate description of the subcutaneous adipose tissue and dermis of gluteal femoral region. In this study specimens harvested from cadavers and form living patients have been analyzed. RESULTS The results showed the presence of three layers: superficial, middle, and deep, characterized by different organization of fat lobules. High resolution imaging showed the adipose papilla that originates from dermis and protrude in subcutaneous adipose tissue. Adipose papilla is characterized by a peculiar morphology with a basement, a neck and a head and these elements represent the functional subunits of adipose papilla. Moreover, ultrastructural study evidenced the relationship between adipocytes and sweat glands, regulated by lipid vesicles. CONCLUSIONS This study provides important information about subcutaneous and dermal fat anatomy of gluteal femoral region, improving the past knowledge, and move toward a better understanding of the cellulite physiopathology.
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Affiliation(s)
- Giamaica Conti
- Department of Neurosciences, Biomedicine and Movement Sciences, Anatomy and Histology Section, School of Medicine, University of Verona, Verona, Italy
- Accademia del Lipofilling, Research and Training Center in Regenerative Surgery, Jesi, Italy
| | - Nicola Zingaretti
- Accademia del Lipofilling, Research and Training Center in Regenerative Surgery, Jesi, Italy
- Clinic of Plastic and Reconstructive Surgery, Academic Hospital of Udine, Department of Medicine (DMED), University of Udine, Udine, 33100, Italy
| | - Alice Busato
- Department of Neurosciences, Biomedicine and Movement Sciences, Anatomy and Histology Section, School of Medicine, University of Verona, Verona, Italy
| | - Lindsey Quintero Sierra
- Department of Neurosciences, Biomedicine and Movement Sciences, Anatomy and Histology Section, School of Medicine, University of Verona, Verona, Italy
| | - Domenico Amuso
- Neuroscience Biomedicine and Movement Sciences Department, University of Verona, Verona, Italy
| | - Antonio Scarano
- Department of Medical, Dean of Master course in Aesthetic Medicine, Oral and Biotechnological Sciences, University of Chieti-Pescara, Pescara, Italy
| | - Eugenio Luigi Iorio
- Neuroscience Biomedicine and Movement Sciences Department, University of Verona, Verona, Italy
| | - Roberto Amore
- Neuroscience Biomedicine and Movement Sciences Department, University of Verona, Verona, Italy
| | - Riccardo Ossanna
- Neuroscience Biomedicine and Movement Sciences Department, University of Verona, Verona, Italy
| | - Alessandro Negri
- Neuroscience Biomedicine and Movement Sciences Department, University of Verona, Verona, Italy
| | - Anita Conti
- Neuroscience Biomedicine and Movement Sciences Department, University of Verona, Verona, Italy
| | - Sheila Veronese
- Neuroscience Biomedicine and Movement Sciences Department, University of Verona, Verona, Italy
| | - Francesco De Francesco
- Accademia del Lipofilling, Research and Training Center in Regenerative Surgery, Jesi, Italy
- Department of Reconstructive Surgery and Hand Surgery, AOU "Ospedali Riuniti", Ancona, Italy
| | - Michele Riccio
- Accademia del Lipofilling, Research and Training Center in Regenerative Surgery, Jesi, Italy
- Department of Reconstructive Surgery and Hand Surgery, AOU "Ospedali Riuniti", Ancona, Italy
| | - Pier Camillo Parodi
- Accademia del Lipofilling, Research and Training Center in Regenerative Surgery, Jesi, Italy
- Clinic of Plastic and Reconstructive Surgery, Academic Hospital of Udine, Department of Medicine (DMED), University of Udine, Udine, 33100, Italy
| | - Andrea Sbarbati
- Accademia del Lipofilling, Research and Training Center in Regenerative Surgery, Jesi, Italy
- Neuroscience Biomedicine and Movement Sciences Department, University of Verona, Verona, Italy
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Prapaharan B, Lea M, Beaudry JL. Weighing in on the role of brown adipose tissue for treatment of obesity. JOURNAL OF PHARMACY & PHARMACEUTICAL SCIENCES : A PUBLICATION OF THE CANADIAN SOCIETY FOR PHARMACEUTICAL SCIENCES, SOCIETE CANADIENNE DES SCIENCES PHARMACEUTIQUES 2024; 27:13157. [PMID: 39087083 PMCID: PMC11290130 DOI: 10.3389/jpps.2024.13157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Accepted: 07/01/2024] [Indexed: 08/02/2024]
Abstract
Brown adipose tissue (BAT) activation is an emerging target for obesity treatments due to its thermogenic properties stemming from its ability to shuttle energy through uncoupling protein 1 (Ucp1). Recent rodent studies show how BAT and white adipose tissue (WAT) activity can be modulated to increase the expression of thermogenic proteins. Consequently, these alterations enable organisms to endure cold-temperatures and elevate energy expenditure, thereby promoting weight loss. In humans, BAT is less abundant in obese subjects and impacts of thermogenesis are less pronounced, bringing into question whether energy expending properties of BAT seen in rodents can be translated to human models. Our review will discuss pharmacological, hormonal, bioactive, sex-specific and environmental activators and inhibitors of BAT to determine the potential for BAT to act as a therapeutic strategy. We aim to address the feasibility of utilizing BAT modulators for weight reduction in obese individuals, as recent studies suggest that BAT's contributions to energy expenditure along with Ucp1-dependent and -independent pathways may or may not rectify energy imbalance characteristic of obesity.
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Affiliation(s)
| | | | - Jacqueline L. Beaudry
- Temerty Faculty of Medicine, Department of Nutritional Sciences, University of Toronto, Toronto, ON, Canada
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3
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Chen L, Xu T, Lou J, Zhang T, Wu S, Xie R, Xu J. The beneficial roles and mechanisms of estrogens in immune health and infection disease. Steroids 2024; 207:109426. [PMID: 38685461 DOI: 10.1016/j.steroids.2024.109426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 02/28/2024] [Accepted: 04/21/2024] [Indexed: 05/02/2024]
Abstract
Multiple epidemiologic studies have revealed that gender is considered one of the important factors in the frequency and severity of certain infectious diseases, in which estrogens may play a vital role. There is growing evidence that estrogens as female sex hormone can modulate multiple biological functions outside of the reproductive system, such as in brain and cardiovascular system. However, it is largely unknown about the roles and mechanisms of estrogens/estrogen receptors in immune health and infection disease. Thence, by reading a lot of literature, we summarized the regulatory mechanisms of estrogens/estrogen receptors in immune cells and their roles in certain infectious diseases with gender differences. Therefore, estrogens may have therapeutic potentials to prevent and treat these infectious diseases, which needs further clinical investigation.
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Affiliation(s)
- Lan Chen
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Ting Xu
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Jun Lou
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Ting Zhang
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Sheng Wu
- Department of Gastroenterology, Liupanshui People's Hospital, Liupanshui City 553000, Guizhou Province, China
| | - Rui Xie
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China.
| | - Jingyu Xu
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China.
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Sal-Sarria S, López-Taboada I, González-Pardo H, Conejo NM. A shift to a standard diet after exposure to a high-fat, high-sucrose diet from gestation to weaning restores brain metabolism and behavioral flexibility in adult rats. Behav Brain Res 2024; 467:115020. [PMID: 38679144 DOI: 10.1016/j.bbr.2024.115020] [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: 02/07/2024] [Revised: 04/14/2024] [Accepted: 04/25/2024] [Indexed: 05/01/2024]
Abstract
Prolonged consumption of diets high in saturated fat and sugar has been related to obesity and overweight, which in turn are linked to cognitive impairment in both humans and rodents. This has become a current issue, especially in children and adolescents, because these stages are crucial to neurodevelopmental processes and programming of adult behavior. To evaluate the effects of gestational and early exposure to an obesogenic diet, three groups with different dietary patterns were established: high-fat and high-sucrose diet (HFS), standard diet (SD), and a dietary shift from a high-fat, high-sucrose diet to a standard diet after weaning (R). Spatial learning and behavioral flexibility in adult male and female Wistar rats were evaluated using the Morris water maze (MWM) at PND 60. Furthermore, regional brain oxidative metabolism was assessed in the prefrontal cortex and the hippocampus. Contrary to our hypothesis, the HFS diet groups showed similar performance on the spatial learning task as the other groups, although they showed impaired cognitive flexibility. The HFS group had increased brain metabolic capacity compared to that of animals fed the standard diet. Shifting from the HFS diet to the SD diet after weaning restored the brain metabolic capacity in both sexes to levels similar to those observed in animals fed the SD diet. In addition, animals in the R group performed similarly to those fed the SD diet in the Morris water maze in both tasks. However, dietary shift from HFS diet to standard diet after weaning had only moderate sex-dependent effects on body weight and fat distribution. In conclusion, switching from an HFS diet to a balanced diet after weaning would have beneficial effects on behavioral flexibility and brain metabolism, without significant sex differences.
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Affiliation(s)
- Saúl Sal-Sarria
- Laboratory of Neuroscience, Department of Psychology, University of Oviedo, Oviedo, Spain; Institute of Neurosciences of the Principality of Asturias (INEUROPA), Oviedo, Spain; Health Research Institute of the Principality of Asturias (ISPA), Oviedo, Spain
| | - Isabel López-Taboada
- Laboratory of Neuroscience, Department of Psychology, University of Oviedo, Oviedo, Spain; Institute of Neurosciences of the Principality of Asturias (INEUROPA), Oviedo, Spain; Health Research Institute of the Principality of Asturias (ISPA), Oviedo, Spain
| | - Héctor González-Pardo
- Laboratory of Neuroscience, Department of Psychology, University of Oviedo, Oviedo, Spain; Institute of Neurosciences of the Principality of Asturias (INEUROPA), Oviedo, Spain; Health Research Institute of the Principality of Asturias (ISPA), Oviedo, Spain
| | - Nélida M Conejo
- Laboratory of Neuroscience, Department of Psychology, University of Oviedo, Oviedo, Spain; Institute of Neurosciences of the Principality of Asturias (INEUROPA), Oviedo, Spain; Health Research Institute of the Principality of Asturias (ISPA), Oviedo, Spain.
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Vick LV, Rosario S, Riess JW, Canter RJ, Mukherjee S, Monjazeb AM, Murphy WJ. Potential roles of sex-linked differences in obesity and cancer immunotherapy: revisiting the obesity paradox. NPJ METABOLIC HEALTH AND DISEASE 2024; 2:5. [PMID: 38800540 PMCID: PMC11116109 DOI: 10.1038/s44324-024-00007-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 04/08/2024] [Indexed: 05/29/2024]
Abstract
Obesity, a condition of excess adiposity usually defined by a BMI > 30, can have profound effects on both metabolism and immunity, connecting the condition with a broad range of diseases, including cancer and negative outcomes. Obesity and cancer have been associated with increased incidence, progression, and poorer outcomes of multiple cancer types in part due to the pro-inflammatory state that arises. Surprisingly, obesity has also recently been demonstrated in both preclinical models and clinical outcomes to be associated with improved response to immune checkpoint inhibition (ICI). These observations have laid the foundation for what has been termed the "obesity paradox". The mechanisms underlying these augmented immunotherapy responses are still unclear given the pleiotropic effects obesity exerts on cells and tissues. Other important variables such as age and sex are being examined as further affecting the obesity effect. Sex-linked factors exert significant influences on obesity biology, metabolism as well as differential effects of different immune cell-types. Age can be another confounding factor contributing to the effects on both sex-linked changes, immune status, and obesity. This review aims to revisit the current body of literature describing the immune and metabolic changes mediated by obesity, the role of obesity on cancer immunotherapy, and to highlight questions on how sex-linked differences may influence obesity and immunotherapy outcome.
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Affiliation(s)
- Logan V. Vick
- Department of Dermatology, University of California Davis School of Medicine, Sacramento, CA USA
| | - Spencer Rosario
- Department of Biostatistics and Bioinformatics, Roswell Park Comprehensive Cancer Center, Buffalo, NY USA
- Pharmacology and Therapeutics, Roswell Park Comprehensive Cancer Center, Buffalo, NY USA
| | - Jonathan W. Riess
- Department of Medicine, Division of Hematology/Oncology, UC Davis Comprehensive Cancer Center, Sacramento, CA USA
| | - Robert J. Canter
- Department of Surgery, Division of Surgical Oncology, University of California Davis Comprehensive Cancer Center, University of California Davis School of Medicine, Sacramento, CA USA
| | - Sarbajit Mukherjee
- Department of Medicine, Roswell Park Comprehensive Cancer Center, Buffalo, NY USA
| | - Arta M. Monjazeb
- Department of Radiation Oncology, University of California Davis Comprehensive Cancer Center, University of California School of Medicine, Sacramento, CA USA
| | - William J. Murphy
- Department of Dermatology, University of California Davis School of Medicine, Sacramento, CA USA
- Department of Internal Medicine, Division of Malignant Hematology, Cellular Therapy and Transplantation, University of California Davis School of Medicine, Sacramento, CA USA
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Pan T, Lee YM, Takimoto E, Ueda K, Liu PY, Shen HH. Inhibitory effects of naringenin on estrogen deficiency-induced obesity via regulation of mitochondrial dynamics and AMPK activation associated with white adipose tissue browning. Life Sci 2024; 340:122453. [PMID: 38272439 DOI: 10.1016/j.lfs.2024.122453] [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: 11/29/2023] [Revised: 01/10/2024] [Accepted: 01/19/2024] [Indexed: 01/27/2024]
Abstract
AIMS Post-ovariectomy (OVX) changes in hormones induce obesity and white adipose tissue (WAT) inflammation. Increased energy expenditure via WAT browning is a novel therapeutic strategy for treating obesity. Naringenin (NAR) reduces inflammation and lipogenesis in obesity and attenuates estrogen deficiency-associated metabolic disorders; however, its role in WAT browning remains unclear. MATERIALS AND METHODS We investigated NAR ability to inhibit estrogen deficiency-associated obesity in vivo using a rat model and in vitro using 3T3-L1 adipocytes. KEY FINDINGS NAR significantly decreased the body weight and WAT mass of rats. O2 consumption, CO2 production, and energy expenditure were significantly lower in the OVX group than in the sham group, but NAR treatment reversed these effects of OVX. NAR treatment markedly improved glucose intolerance and lipid profiles as well as leptin, adiponectin, and irisin levels. NAR upregulated markers of browning and mitochondrial biogenesis in inguinal WAT. Moreover, it enhanced markers of mitochondrial fusion and inhibited fission via activating the AMP-activated protein kinase pathway. Similar results were observed in 3T3-L1 adipocytes. Moreover, NAR-induced mitochondrial biogenesis and fusion were suppressed by dorsomorphin (an AMP-activated protein kinase inhibitor). SIGNIFICANCE NAR alleviates obesity and metabolic dysfunction through the induction of WAT browning achieved via the modulation of AMP-activated protein kinase-regulated mitochondrial dynamics in WATs. NAR supplementation may therefore represent a potential intervention for preventing postmenopausal adipose tissue dysregulation.
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Affiliation(s)
- Tong Pan
- Graduate Institute and Department of Pharmacology, National Defense Medical Center, Taipei, Taiwan
| | - Yen-Mei Lee
- Graduate Institute and Department of Pharmacology, National Defense Medical Center, Taipei, Taiwan
| | - Eiki Takimoto
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan; Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Kazutaka Ueda
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Pang-Yen Liu
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan; Division of Cardiology, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan.
| | - Hsin-Hsueh Shen
- Graduate Institute and Department of Pharmacology, National Defense Medical Center, Taipei, Taiwan
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Chen GD, Liang SJ, Huang L, Yu HR, Wu YL, Wei QZ, Zhang ZQ. Associations of Dietary Anthocyanidins Intake with Bone Health in Children: A Cross-Sectional Study. Calcif Tissue Int 2023; 113:393-402. [PMID: 37656219 DOI: 10.1007/s00223-023-01128-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 08/08/2023] [Indexed: 09/02/2023]
Abstract
PURPOSE Bone health and body composition share several common mechanisms like oxidative stress and inflammation. Anthocyanins have antioxidant and anti-inflammatory properties. We have reported that anthocyanins are associated with better body composition in children, but the associations with bone health have not been elucidated. We aimed to explore the association of anthocyanins with bone mineral content (BMC) and bone mineral density (BMD) at multiple sites in children. METHODS In this cross-sectional study, 452 Chinese children aged 6-9 years were recruited. A validated 79-item food frequency questionnaire was used to collect dietary information. BMC and BMD at multiple sites (whole body; whole body excluding head, WBEH; limbs; arms; legs) were measured by dual-energy X-ray. RESULTS Higher dietary intake of total anthocyanidins (per one standard deviation increase) was associated with a 1.28-13.6 g (1.31-1.60%, compared to median) higher BMC at all sites and a 3.61-6.96 mg (0.65-0.90%) higher BMD at the whole body, WBEH, and arm sites after controlling for a number of possible covariates. The results were similar and more pronounced for cyanidin, but not for delphinidin and peonidin. Higher dietary intake of cyanidin (per one standard deviation increase) was associated with a 1.33-15.4 g (1.48-1.68%) higher BMC at all sites and a 4.15-7.77 mg (0.66-1.00%) higher BMD at all sites except the legs. No statistically significant associations with BMC or BMD were found for dietary intake of delphinidin and peonidin. CONCLUSIONS Higher dietary intake of total anthocyanidins and cyanidins were associated with higher BMC and BMD in Chinese children.
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Affiliation(s)
- Geng-Dong Chen
- Department of Obstetrics, Foshan Institute of Fetal Medicine, Southern Medical University Affiliated Maternal & Child Health Hospital of Foshan, Foshan, 528000, Guangdong, China
| | - Shu-Jun Liang
- Department of Nutrition and Food Hygiene, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, No.1023-1063, Tainan Road, Baiyun District, Guangzhou City, Guangdong Province, 510515, People's Republic of China
| | - Lan Huang
- Department of Nutrition and Food Hygiene, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, No.1023-1063, Tainan Road, Baiyun District, Guangzhou City, Guangdong Province, 510515, People's Republic of China
| | - Hao-Ran Yu
- Department of Nutrition and Food Hygiene, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, No.1023-1063, Tainan Road, Baiyun District, Guangzhou City, Guangdong Province, 510515, People's Republic of China
| | - Yu-Lin Wu
- Department of Nutrition and Food Hygiene, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, No.1023-1063, Tainan Road, Baiyun District, Guangzhou City, Guangdong Province, 510515, People's Republic of China
| | - Qin-Zhi Wei
- Department of Nutrition and Food Hygiene, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, No.1023-1063, Tainan Road, Baiyun District, Guangzhou City, Guangdong Province, 510515, People's Republic of China.
| | - Zhe-Qing Zhang
- Department of Nutrition and Food Hygiene, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, No.1023-1063, Tainan Road, Baiyun District, Guangzhou City, Guangdong Province, 510515, People's Republic of China.
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Stranahan AM, Guo DH, Yamamoto M, Hernandez CM, Khodadadi H, Baban B, Zhi W, Lei Y, Lu X, Ding K, Isales CM. Sex Differences in Adipose Tissue Distribution Determine Susceptibility to Neuroinflammation in Mice With Dietary Obesity. Diabetes 2023; 72:245-260. [PMID: 36367881 PMCID: PMC9871229 DOI: 10.2337/db22-0192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 11/08/2022] [Indexed: 11/13/2022]
Abstract
Preferential energy storage in subcutaneous adipose tissue (SAT) confers protection against obesity-induced pathophysiology in females. Females also exhibit distinct immunological responses, relative to males. These differences are often attributed to sex hormones, but reciprocal interactions between metabolism, immunity, and gonadal steroids remain poorly understood. We systematically characterized adipose tissue hypertrophy, sex steroids, and inflammation in male and female mice after increasing durations of high-fat diet (HFD)-induced obesity. After observing that sex differences in adipose tissue distribution before HFD were correlated with lasting protection against inflammation in females, we hypothesized that a priori differences in the ratio of subcutaneous to visceral fat might mediate this relationship. To test this, male and female mice underwent SAT lipectomy (LPX) or sham surgery before HFD challenge, followed by analysis of glial reactivity, adipose tissue inflammation, and reproductive steroids. Because LPX eliminated female resistance to the proinflammatory effects of HFD without changing circulating sex hormones, we conclude that sexually dimorphic organization of subcutaneous and visceral fat determines susceptibility to inflammation in obesity.
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Affiliation(s)
- Alexis M. Stranahan
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA
| | - De-Huang Guo
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA
| | - Masaki Yamamoto
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA
| | - Caterina M. Hernandez
- Department of Pharmacology and Toxicology, Medical College of Georgia, Augusta University, Augusta, GA
| | - Hesam Khodadadi
- Department of Oral Biology, Medical College of Georgia, Augusta University, Augusta, GA
| | - Babak Baban
- Department of Oral Biology, Medical College of Georgia, Augusta University, Augusta, GA
- Plastic Surgery Section, Department of Surgery, Medical College of Georgia, Augusta University, Augusta, GA
| | - Wenbo Zhi
- Department of Obstetrics and Gynecology, Medical College of Georgia, Augusta University, Augusta, GA
| | - Yun Lei
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA
| | - Xinyun Lu
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA
| | - Kehong Ding
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA
| | - Carlos M. Isales
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA
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Chen HH, Hsu HT, Liao MH, Teng MS. Effects of Sex and Obesity on LEP Variant and Leptin Level Associations in Intervertebral Disc Degeneration. Int J Mol Sci 2022; 23:ijms232012275. [PMID: 36293132 PMCID: PMC9603873 DOI: 10.3390/ijms232012275] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 10/03/2022] [Accepted: 10/11/2022] [Indexed: 12/04/2022] Open
Abstract
Intervertebral disc degeneration (IVDD), for which obesity and genetics are known risk factors, is a chronic process that alters the structure and function of the intervertebral discs (IVD). Circulating leptin is positively correlated with body weight and is often measured to elucidate the pathogenesis of IVD degeneration. In this study, we examined the associations of LEP single nucleotide polymorphisms (SNPs) genetic and environmental effects with IVDD. A total of 303 Taiwanese patients with IVDD (mean age, 58.6 ± 12.7 years) undergoing cervical discectomy for neck pain or lumbar discectomy for back pain were enrolled. Commercially available enzyme-linked immunosorbent assay (ELISA) kits measured the circulating plasma leptin levels. TaqMan SNP genotyping assays genotyped the LEP SNPs rs2167270 and rs7799039. Leptin levels were significantly increased in obese individuals (p < 0.001) and non-obese or obese women (p < 0.001). In the dominant model, recoded minor alleles of rs2167270 and rs7799039 were associated with higher leptin levels in all individuals (p = 0.011, p = 0.012). Further, the association between these LEP SNPs and leptin levels was significant only in obese women (p = 0.025 and p = 0.008, respectively). There was an interaction effect between sex and obesity, particularly among obese women (interaction p = 0.04 and 0.02, respectively). Our findings demonstrate that these SNPs have sex-specific associations with BMI in IVDD patients, and that obesity and sex, particularly among obese women, may modify the LEP transcription effect.
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Affiliation(s)
- Hsing-Hong Chen
- Division of Neurosurgery, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City 23142, Taiwan
- School of Medicine, Buddhist Tzu Chi University, Hualien 97004, Taiwan
| | - Hsien-Ta Hsu
- Division of Neurosurgery, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City 23142, Taiwan
- School of Medicine, Buddhist Tzu Chi University, Hualien 97004, Taiwan
| | - Mei-Hsiu Liao
- Department of Research, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City 23142, Taiwan
| | - Ming-Sheng Teng
- Department of Research, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City 23142, Taiwan
- Correspondence: ; Tel.: +886-2-6628-9779 (ext. 5790); Fax: +886-2-6628-9009
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Liu Z, Ding S, Jiang H, Fang J. Egg Protein Transferrin-Derived Peptides Irw (Lle-Arg-Trp) and Iqw (Lle-Gln-Trp) Prevent Obesity Mouse Model Induced by a High-Fat Diet via Reducing Lipid Deposition and Reprogramming Gut Microbiota. Int J Mol Sci 2022; 23:ijms231911227. [PMID: 36232527 PMCID: PMC9569728 DOI: 10.3390/ijms231911227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 09/19/2022] [Accepted: 09/19/2022] [Indexed: 11/16/2022] Open
Abstract
Egg-derived peptides play important roles in insulin secretion and sensitivity, oxidative stress, and inflammation, suggesting their possible involvement in obesity management. Hence, the aim of this study is to explore the alleviating effects of IRW (lle-Arg-Trp) and IQW (lle-Gln-Trp) on obesity via the mouse model induced by a high-fat diet. The entire experimental period lasted eight weeks. The results demonstrated that IQW prevented weight gain (6.52%), decreased the glucose, low-density lipoprotein (LDL), malonaldehyde, triglycerides, total cholesterol (TC), and leptin levels, and increased the concentration of adiponectin (p < 0.05, n = 8). Although IRW failed to prevent weight gain, it reduced the concentration of glucose, high-density lipoprotein (HDL), LDL, and leptin, and increased the concentration of adiponectin (p < 0.05, n = 8). Moreover, IRW and IQW increased glucose tolerance and insulin resistance based on the results of the intraperitoneal glucose test and insulin tolerance test (p < 0.05, n = 8). The quantitative polymerase chain reaction results revealed that IRW and IQW downregulated the mRNA expression of DGAT1 (Diacylglycerol O-Acyltransferase 1), DGAT2 (Diacylglycerol O-Acyltransferase 2), TNF-α, IL-6, and IL-1β of liver tissue (p < 0.05, n = 8). The results of the 16S ribosomal RNA amplicon sequencing showed that IQW and IRW tended to reduce the relative abundance of Firmicutes and Parabacteroides, and that IRW enhanced the abundance of Bacteroides (p < 0.05, n = 8). Collectively, IRW and IQW supplementation could alleviate the progression of obesity due to the fact that the supplementation reduced lipid deposition, maintained energy balance, and reprogrammed gut microbiota.
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Affiliation(s)
- Zhuangzhuang Liu
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
| | - Sujuan Ding
- Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, CAS Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Changsha 410125, China
| | - Hongmei Jiang
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
| | - Jun Fang
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
- Correspondence: ; Tel.: +86-731-8461-3600
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11
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Guo L, Wang YY, Wang JH, Zhao HP, Yu Y, Wang GD, Dai K, Yan YZ, Yang YJ, Lv J. Associations of gut microbiota with dyslipidemia based on sex differences in subjects from Northwestern China. World J Gastroenterol 2022; 28:3455-3475. [PMID: 36158270 PMCID: PMC9346449 DOI: 10.3748/wjg.v28.i27.3455] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 05/17/2022] [Accepted: 06/20/2022] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The gut microbiota (GM) has been proven to play a role in the regulation of host lipid metabolism, which provides a new theory about the pathogenesis of dyslipidemia. However, the associations of GM with dyslipidemia based on sex differences remain unclear and warrant elucidation.
AIM To investigate the associations of GM features with serum lipid profiles based on sex differences in a Chinese population.
METHODS This study ultimately recruited 142 participants (73 females and 69 males) at Honghui Hospital, Xi’an Jiaotong University. The anthropometric and blood metabolic parameters of all participants were measured. According to their serum lipid levels, female and male participants were classified into a high triglyceride (H_TG) group, a high total cholesterol (H_CHO) group, a low high-density lipoprotein cholesterol (L_HDL-C) group, and a control (CON) group with normal serum lipid levels. Fresh fecal samples were collected for 16S rRNA gene sequencing. UPARSE software, QIIME software, the RDP classifier and the FAPROTAX database were used for sequencing analyses.
RESULTS The GM composition at the phylum level included Firmicutes and Bacteroidetes as the core GM. Different GM features were identified between females and males, and the associations between GM and serum lipid profiles were different in females and males. The GM features in different dyslipidemia subgroups changed in both female patients and male patients. Proteobacteria, Lactobacillaceae, Lactobacillus and Lactobacillus_salivarius were enriched in H_CHO females compared with CON females, while Coriobacteriia were enriched in L_HDL-C females. In the comparison among the three dyslipidemia subgroups in females, Lactobacillus_salivarius were enriched in H_CHO females, and Prevotellaceae were enriched in L_HDL-C females. Compared with CON or H_TG males, Prevotellaceae, unidentified_Ruminococcaceae, Roseburia and Roseburia_inulinivorans were decreased in L_HDL-C males (P value < 0.05), and linear discriminant analysis effect size analysis indicated an enrichment of the above GM taxa in H_TG males compared with other male subgroups. Additionally, Roseburia_inulinivorans abundance was positively correlated with serum TG and total cholesterol levels, and Roseburia were positively correlated with serum TG level. Furthermore, Proteobacteria (0.724, 95%CI: 0.567-0.849), Lactobacillaceae (0.703, 95%CI: 0.544-0.832), Lactobacillus (0.705, 95%CI: 0.547-0.834) and Lactobacillus_salivarius (0.706, 95%CI: 0.548-0.835) could distinguish H_CHO females from CON females, while Coriobacteriia (0.710, 95%CI: 0.547-0.841), Coriobacteriales (0.710, 95%CI: 0.547-0.841), Prevotellaceae (0.697, 95%CI: 0.534-0.830), Roseburia (0.697, 95%CI: 0.534-0.830) and Roseburia_inulinivorans (0.684, 95%CI: 0.520-0.820) could discriminate H_TG males from CON males. Based on the predictions of GM metabolic capabilities with the FAPROTAX database, a total of 51 functional assignments were obtained in females, while 38 were obtained in males. This functional prediction suggested that cellulolysis increased in L_HDL-C females compared with CON females, but decreased in L_HDL-C males compared with CON males.
CONCLUSION This study indicates associations of GM with serum lipid profiles, supporting the notion that GM dysbiosis may participate in the pathogenesis of dyslipidemia, and sex differences should be considered.
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Affiliation(s)
- Lei Guo
- Department of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an 710054, Shaanxi Province, China
| | - Yang-Yang Wang
- School of Electronics and Information, Northwestern Polytechnical University, Xi'an 710129, Shaanxi Province, China
| | - Ji-Han Wang
- Institute of Medical Research, Northwestern Polytechnical University, Xi'an 710072, Shaanxi Province, China
| | - He-Ping Zhao
- Department of Clinical Laboratory, Honghui Hospital, Xi'an Jiaotong University, Xi'an 710054, Shaanxi Province, China
| | - Yan Yu
- Department of Clinical Laboratory, Honghui Hospital, Xi'an Jiaotong University, Xi'an 710054, Shaanxi Province, China
| | - Guo-Dong Wang
- Department of Quality Control, Xi’an Mental Health Center, Xi'an 710100, Shaanxi Province, China
| | - Kun Dai
- Department of Clinical Laboratory, Yanliang Railway Hospital of Xi’an, Xi'an 710089, Shaanxi Province, China
| | - Yu-Zhu Yan
- Department of Clinical Laboratory, Honghui Hospital, Xi'an Jiaotong University, Xi'an 710054, Shaanxi Province, China
| | - Yan-Jie Yang
- Department of Cardiology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi Province, China
| | - Jing Lv
- Department of Clinical Laboratory, Honghui Hospital, Xi'an Jiaotong University, Xi'an 710054, Shaanxi Province, China
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12
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Daquinag AC, Gao Z, Yu Y, Kolonin MG. Endothelial TrkA coordinates vascularization and innervation in thermogenic adipose tissue and can be targeted to control metabolism. Mol Metab 2022; 63:101544. [PMID: 35835372 PMCID: PMC9310128 DOI: 10.1016/j.molmet.2022.101544] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 06/24/2022] [Accepted: 07/05/2022] [Indexed: 10/25/2022] Open
Abstract
OBJECTIVE Brown adipogenesis and thermogenesis in brown and beige adipose tissue (AT) involve vascular remodeling and sympathetic neuronal guidance. Here, we investigated the molecular mechanism coordinating these processes. METHODS We used mouse models to identify the molecular target of a peptide CPATAERPC homing to the endothelium of brown and beige AT. RESULTS We demonstrate that CPATAERPC mimics nerve growth factor (NGF) and identify a low molecular weight isoform of NGF receptor, TrkA, as the CPATAERPC cell surface target. We show that the expression of truncated endothelial TrkA is selective for brown and subcutaneous AT. Analysis of mice with endothelium-specific TrkA knockout revealed the role of TrkA in neuro-vascular coordination supporting the thermogenic function of brown adipocytes. A hunter-killer peptide D-BAT, composed of CPATAERPC and a pro-apoptotic domain, induced cell death in the endothelium and adipocytes. This resulted in thermogenesis impairment, and predisposed mice to obesity and glucose intolerance. We also tested if this treatment can inhibit the tumor recruitment of lipids mobilized from adipocytes from adjacent AT. Indeed, in a mouse model of breast cancer D-BAT suppressed tumor-associated AT lipolysis, which resulted in reduced fatty acid utilization by cancer cells. CONCLUSION Our study demonstrates that TrkA signaling in the endothelium supports neuro-vascular coordination enabling beige adipogenesis.
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Affiliation(s)
- Alexes C Daquinag
- The Brown Foundation Institute of Molecular Medicine, University of Texas Health Science Center, Houston, TX 77030, USA
| | - Zhanguo Gao
- The Brown Foundation Institute of Molecular Medicine, University of Texas Health Science Center, Houston, TX 77030, USA
| | - Yongmei Yu
- The Brown Foundation Institute of Molecular Medicine, University of Texas Health Science Center, Houston, TX 77030, USA
| | - Mikhail G Kolonin
- The Brown Foundation Institute of Molecular Medicine, University of Texas Health Science Center, Houston, TX 77030, USA.
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13
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Salim AA, Kawasoe S, Kubozono T, Ojima S, Kawabata T, Ikeda Y, Miyahara H, Tokushige K, Ohishi M. Assessment of Future Hypertension Risk by Sex Using Combined Body Mass Index and Waist-to-Height Ratio. Circ Rep 2022; 4:9-16. [PMID: 35083383 PMCID: PMC8710643 DOI: 10.1253/circrep.cr-21-0139] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 10/27/2021] [Indexed: 11/09/2022] Open
Abstract
Background:
Body mass index (BMI) and the waist-to-height ratio (WHtR) are widely used anthropometric indices of obesity to predict cardiovascular risks. However, the usefulness of combining WHtR and BMI values to predict hypertension risk by sex has not been well elucidated. Methods and Results:
This cohort study enrolled 45,921 participants (mean [±SD] age 53.8±10.5 years; 47.0% men) without hypertension from among those undergoing annual health checkups. Participants were divided into 4 categories based on median BMI and WHtR values, and the 5-year incidence of hypertension was assessed for both sexes using logistic regression analysis. Mean (±SD) BMI and WHtR values were 23.5±3.1 kg/m2
and 0.50±0.05, respectively, in men and 22.4±3.3 kg/m2
and 0.53±0.06, respectively, in women. Among the women, those with high BMI and low WHtR had an increased risk of hypertension compared with those with low BMI and low WHtR (odds ratio [OR] 1.37, P<0.001); however, the same result was not found in men (OR 1.14, P=0.080). In both sexes, the incidence of hypertension was higher among participants with low BMI and high WHtR than among those with low BMI and low WHtR (men: OR 1.26, P<0.001; women: OR 1.15, P=0.048). Conclusions:
Using WHtR and BMI together provides a better hypertension risk assessment. Among men, those with a high BMI had no increased hypertension risk when WHtR was low.
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Affiliation(s)
- Anwar Ahmed Salim
- Department of Cardiovascular Medicine and Hypertension, Graduate School of Medical and Dental Sciences, Kagoshima University
| | - Shin Kawasoe
- Department of Cardiovascular Medicine and Hypertension, Graduate School of Medical and Dental Sciences, Kagoshima University
| | - Takuro Kubozono
- Department of Cardiovascular Medicine and Hypertension, Graduate School of Medical and Dental Sciences, Kagoshima University
| | - Satoko Ojima
- Department of Cardiovascular Medicine and Hypertension, Graduate School of Medical and Dental Sciences, Kagoshima University
| | - Takeko Kawabata
- Department of Cardiovascular Medicine and Hypertension, Graduate School of Medical and Dental Sciences, Kagoshima University
| | - Yoshiyuki Ikeda
- Department of Cardiovascular Medicine and Hypertension, Graduate School of Medical and Dental Sciences, Kagoshima University
| | | | | | - Mitsuru Ohishi
- Department of Cardiovascular Medicine and Hypertension, Graduate School of Medical and Dental Sciences, Kagoshima University
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14
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Role of Distinct Fat Depots in Metabolic Regulation and Pathological Implications. Rev Physiol Biochem Pharmacol 2022; 186:135-176. [PMID: 35915363 DOI: 10.1007/112_2022_73] [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: 02/01/2023]
Abstract
People suffering from obesity and associated metabolic disorders including diabetes are increasing exponentially around the world. Adipose tissue (AT) distribution and alteration in their biochemical properties play a major role in the pathogenesis of these diseases. Emerging evidence suggests that AT heterogeneity and depot-specific physiological changes are vital in the development of insulin resistance in peripheral tissues like muscle and liver. Classically, AT depots are classified into white adipose tissue (WAT) and brown adipose tissue (BAT); WAT is the site of fatty acid storage, while BAT is a dedicated organ of metabolic heat production. The discovery of beige adipocyte clusters in WAT depots indicates AT heterogeneity has a more central role than hither to ascribed. Therefore, we have discussed in detail the current state of understanding on cellular and molecular origin of different AT depots and their relevance toward physiological metabolic homeostasis. A major focus is to highlight the correlation between altered WAT distribution in the body and metabolic pathogenesis in animal models and humans. We have also underscored the disparity in the molecular (including signaling) changes in various WAT tissues during diabetic pathogenesis. Exercise-mediated beneficial alteration in WAT physiology/distribution that protects against metabolic disorders is evolving. Here we have discussed the depot-specific biochemical adjustments induced by different forms of exercise. A detailed understanding of the molecular details of inter-organ crosstalk via substrate utilization/storage and signaling through chemokines provide strategies to target selected WAT depots to pharmacologically mimic the benefits of exercise countering metabolic diseases including diabetes.
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15
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Torres Irizarry VC, Jiang Y, He Y, Xu P. Hypothalamic Estrogen Signaling and Adipose Tissue Metabolism in Energy Homeostasis. Front Endocrinol (Lausanne) 2022; 13:898139. [PMID: 35757435 PMCID: PMC9218066 DOI: 10.3389/fendo.2022.898139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 04/29/2022] [Indexed: 11/30/2022] Open
Abstract
Obesity has become a global epidemic, and it is a major risk factor for other metabolic disorders such as type 2 diabetes and cardiometabolic disease. Accumulating evidence indicates that there is sex-specific metabolic protection and disease susceptibility. For instance, in both clinical and experimental studies, males are more likely to develop obesity, insulin resistance, and diabetes. In line with this, males tend to have more visceral white adipose tissue (WAT) and less brown adipose tissue (BAT) thermogenic activity, both leading to an increased incidence of metabolic disorders. This female-specific fat distribution is partially mediated by sex hormone estrogens. Specifically, hypothalamic estrogen signaling plays a vital role in regulating WAT distribution, WAT beiging, and BAT thermogenesis. These regulatory effects on adipose tissue metabolism are primarily mediated by the activation of estrogen receptor alpha (ERα) in neurons, which interacts with hormones and adipokines such as leptin, ghrelin, and insulin. This review discusses the contribution of adipose tissue dysfunction to obesity and the role of hypothalamic estrogen signaling in preventing metabolic diseases with a particular focus on the VMH, the central regulator of energy expenditure and glucose homeostasis.
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Affiliation(s)
- Valeria C. Torres Irizarry
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, The University of Illinois at Chicago, Chicago, IL, United States
- Department of Physiology and Biophysics, The University of Illinois at Chicago, Chicago, IL, United States
| | - Yuwei Jiang
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, The University of Illinois at Chicago, Chicago, IL, United States
- Department of Physiology and Biophysics, The University of Illinois at Chicago, Chicago, IL, United States
- *Correspondence: Yuwei Jiang, ; Yanlin He, ; Pingwen Xu,
| | - Yanlin He
- Pennington Biomedical Research Center, Louisiana State University System, Baton Rouge, LA, United States
- *Correspondence: Yuwei Jiang, ; Yanlin He, ; Pingwen Xu,
| | - Pingwen Xu
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, The University of Illinois at Chicago, Chicago, IL, United States
- Department of Physiology and Biophysics, The University of Illinois at Chicago, Chicago, IL, United States
- *Correspondence: Yuwei Jiang, ; Yanlin He, ; Pingwen Xu,
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16
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Lefebvre P, Staels B. Hepatic sexual dimorphism - implications for non-alcoholic fatty liver disease. Nat Rev Endocrinol 2021; 17:662-670. [PMID: 34417588 DOI: 10.1038/s41574-021-00538-6] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/06/2021] [Indexed: 12/14/2022]
Abstract
The liver is often thought of as a single functional unit, but both its structural and functional architecture make it highly multivalent and adaptable. In any given physiological situation, the liver can maintain metabolic homeostasis, conduct appropriate inflammatory responses, carry out endobiotic and xenobiotic transformation and synthesis reactions, as well as store and release multiple bioactive molecules. Moreover, the liver is a very resilient organ. This resilience means that chronic liver diseases can go unnoticed for decades, yet culminate in life-threatening clinical complications once the adaptive capacity of the liver is overwhelmed. Non-alcoholic fatty liver disease (NAFLD) predisposes individuals to cirrhosis and increases liver-related and cardiovascular disease-related mortality. This Review discusses the accumulating evidence of sexual dimorphism in NAFLD, which is currently rarely considered in preclinical and clinical studies. Increased awareness of the mechanistic causes of hepatic sexual dimorphism could lead to improved understanding of the biological processes that are dysregulated in NAFLD, to the identification of relevant therapeutic targets and to improved risk stratification of patients with NAFLD undergoing therapeutic intervention.
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Affiliation(s)
- Philippe Lefebvre
- Université Lille, INSERM, CHU Lille, Institut Pasteur de Lille, Lille, France.
| | - Bart Staels
- Université Lille, INSERM, CHU Lille, Institut Pasteur de Lille, Lille, France
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17
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Brzęk P. Sex differences in nonshivering thermogenesis in the wild. Mol Cell Endocrinol 2021; 536:111402. [PMID: 34302908 DOI: 10.1016/j.mce.2021.111402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 07/01/2021] [Accepted: 07/05/2021] [Indexed: 10/20/2022]
Abstract
Nonshivering thermogenesis (NST) is a key mechanism that allows mammals to control their body temperature. Sex can frequently affect thermoregulatory requirements; therefore, males and females can be expected to differ significantly in their NST capacity. Several sex-related differences in NST have been described in laboratory animals and humans; however, these parameters are relatively rarely studied in animals living under natural conditions. Here, I briefly review factors that may be responsible for this disparity and point out two situations that should be particularly promising in searching for sex differences in NST under natural conditions: the lactation period and potential mitonuclear conflicts over NST control in species with genetic polymorphism.
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Affiliation(s)
- Paweł Brzęk
- Faculty of Biology, University of Białystok, Ciołkowskiego 1J, 15-245, Białystok, Poland.
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18
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Long-term diet-induced obesity does not lead to learning and memory impairment in adult mice. PLoS One 2021; 16:e0257921. [PMID: 34587222 PMCID: PMC8480843 DOI: 10.1371/journal.pone.0257921] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 09/13/2021] [Indexed: 02/06/2023] Open
Abstract
Obesity arising from excessive dietary fat intake is a risk factor for cognitive decline, dementia and neurodegenerative diseases, including Alzheimer’s disease. Here, we studied the effect of long-term high-fat diet (HFD) (24 weeks) and return to normal diet (ND) on behavioral features, microglia and neurons in adult male C57BL/6J mice. Consequences of HFD-induced obesity and dietary changes on general health (coat appearance, presence of vibrissae), sensory and motor reflexes, learning and memory were assessed by applying a phenotypic assessment protocol, the Y maze and Morris Water Maze test. Neurons and microglia were histologically analyzed within the mediobasal hypothalamus, hippocampus and frontal motor cortex after long-term HFD and change of diet. Long periods of HFD caused general health issues (coat alterations, loss of vibrissae), but did not affect sensory and motor reflexes, emotional state, memory and learning. Long-term HFD increased the microglial response (increased Iba1 fluorescence intensity, percentage of Iba1-stained area and Iba1 gene expression) within the hypothalamus, but not in the cortex and hippocampus. In neither of these regions, neurodegeneration or intracellular lipid droplet accumulation was observed. The former alterations were reversible in mice whose diet was changed from HFD to ND. Taken together, long periods of excessive dietary fat alone do not cause learning deficits or spatial memory impairment, though HFD-induced obesity may have detrimental consequences for cognitive flexibility. Our data confirm the selective responsiveness of hypothalamic microglia to HFD.
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19
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Brandão BB, Poojari A, Rabiee A. Thermogenic Fat: Development, Physiological Function, and Therapeutic Potential. Int J Mol Sci 2021; 22:5906. [PMID: 34072788 PMCID: PMC8198523 DOI: 10.3390/ijms22115906] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 04/30/2021] [Accepted: 05/27/2021] [Indexed: 12/11/2022] Open
Abstract
The concerning worldwide increase of obesity and chronic metabolic diseases, such as T2D, dyslipidemia, and cardiovascular disease, motivates further investigations into preventive and alternative therapeutic approaches. Over the past decade, there has been growing evidence that the formation and activation of thermogenic adipocytes (brown and beige) may serve as therapy to treat obesity and its associated diseases owing to its capacity to increase energy expenditure and to modulate circulating lipids and glucose levels. Thus, understanding the molecular mechanism of brown and beige adipocytes formation and activation will facilitate the development of strategies to combat metabolic disorders. Here, we provide a comprehensive overview of pathways and players involved in the development of brown and beige fat, as well as the role of thermogenic adipocytes in energy homeostasis and metabolism. Furthermore, we discuss the alterations in brown and beige adipose tissue function during obesity and explore the therapeutic potential of thermogenic activation to treat metabolic syndrome.
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Affiliation(s)
- Bruna B. Brandão
- Section of Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA 02215, USA;
| | - Ankita Poojari
- Department of Physiology & Pharmacology, Thomas J. Long School of Pharmacy & Health Sciences, University of the Pacific, Stockton, CA 95211, USA;
| | - Atefeh Rabiee
- Department of Physiology & Pharmacology, Thomas J. Long School of Pharmacy & Health Sciences, University of the Pacific, Stockton, CA 95211, USA;
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20
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Dou J, Puttabyatappa M, Padmanabhan V, Bakulski KM. Developmental programming: Adipose depot-specific transcriptional regulation by prenatal testosterone excess in a sheep model of PCOS. Mol Cell Endocrinol 2021; 523:111137. [PMID: 33359827 PMCID: PMC7854529 DOI: 10.1016/j.mce.2020.111137] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 11/16/2020] [Accepted: 12/14/2020] [Indexed: 02/08/2023]
Abstract
Prenatal testosterone (T)-treated female sheep manifest adipose depot-specific disruptions in inflammatory/oxidative state, adipocyte differentiation and thermogenic adipocyte distribution. The objective of this study was to identify common and divergent gene pathways underlying prenatal T excess-induced adipose depot-specific disruptions. RNA sequencing and network analyses were undertaken with visceral (VAT), subcutaneous (SAT), epicardiac (ECAT) and perirenal (PRAT) adipose tissues from control and prenatal T-treated (100 mg T propionate twice a week from days 30-90 of gestation) female sheep at 21 months of age. Increased expression of adiposity and inflammation-related genes in VAT and genes that promote differentiation of white adipocytes in SAT were congruous with their metabolic roles with SAT favoring uptake/storage of free fatty acids and triglycerides and VAT favoring higher rate of fatty acid turnover and lipolysis. Selective upregulation of cardiac muscle and renoprotection genes in ECAT and PRAT respectively are suggestive of protective paracrine actions. Expression profile in prenatal T-treated sheep paralleled depot-specific dysfunctions with increased proinflammatory genes in VAT, reduced adipocyte differentiation genes in VAT and SAT and increased vascular related gene expression in PRAT. The high expression of genes involved in cardiomyocyte function in ECAT is suggestive of cardioprotective function being maintained to overcome the prenatal T-induced cardiac dysfunction and hypertension. These findings coupled with changes in gene pathways and networks involved in chromatin modification, extracellular matrix, immune and mitochondrial function, and endoplasmic reticulum to Golgi transport suggest that dysregulation in gene expression underlie prenatal T-treatment induced functional differences among adipose depots and manifestation of metabolic dysfunction.
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Affiliation(s)
- John Dou
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | | | | | - Kelly M Bakulski
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI, USA.
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21
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Sharma T, Morassut RE, Langlois C, Meyre D. Effect of sex/gender on obesity traits in Canadian first year university students: The GENEiUS study. PLoS One 2021; 16:e0247113. [PMID: 33592058 PMCID: PMC7886219 DOI: 10.1371/journal.pone.0247113] [Citation(s) in RCA: 3] [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: 07/03/2020] [Accepted: 02/01/2021] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND While weight gain during first year of university has been well documented in North America, literature on sex-specific effects is scarce and inconsistent. The objective of this investigation was to explore sex-specific changes in obesity traits during first year of university at McMaster University (Ontario, Canada). METHODS 245 first-year students (80.4% females) were followed longitudinally with data collected early in the academic year and towards the end of the year. Obesity parameters including weight, waist and hip circumferences, BMI, and waist to hip ratio were investigated. The Mann-Whitney U test and the Wilcoxon signed-rank test were used for pairwise comparison of traits in the absence of adjustments. Additionally, the repeated-measures ANOVA test was used with covariate adjustments to investigate the interaction between sex and time. RESULTS Overall sample trends indicated a significant increase in mean weight by 1.55 kg (95% CI: 1.24-1.86) over the school year (p<0.001). This was accompanied by significant gains in BMI, and waist and hip circumferences (p<0.001) in the overall sample. At baseline, males presented with higher body weight, BMI, waist and hip circumferences, and WHR, as compared to their females counterparts (p<0.01). Additionally, sex-stratified analysis indicated significant gains in weight, BMI, and waist and hip circumferences in both males and females (p<0.01). However, a comparison of the magnitude of change over time between the two sex groups revealed no significant difference for any of the investigated traits (p>0.05). CONCLUSION While our study confirms significant weight gain in both male and female first year university students in Ontario, Canada, it does not show sex specific differences within this context. Our investigation highlights the importance of accounting for sex and gender in health research and supports the need of further studies in this area.
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Affiliation(s)
- Tanmay Sharma
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Canada
| | - Rita E. Morassut
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Canada
| | - Christine Langlois
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Canada
| | - David Meyre
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Canada
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, Canada
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Sidsworth DA, Sellers SL, Reutens-Hernandez JP, Dunn EA, Gray SL, Payne GW. Impact of sex on microvascular reactivity in a murine model of diet-induced obesity and insulin resistance. Heliyon 2021; 7:e06217. [PMID: 33644477 PMCID: PMC7895723 DOI: 10.1016/j.heliyon.2021.e06217] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 10/26/2020] [Accepted: 02/04/2021] [Indexed: 11/24/2022] Open
Abstract
The association of obesity with cardiovascular disease is well established. However, the interplay of obesity and vascular dysfunction in peripheral tissues such as skeletal muscle, which plays a key in role metabolic homeostasis, requires further study. In particular, there is a paucity of data with regard to sex-differences. Therefore, using a murine model (C57BL/6) of high-fat diet-induced obesity and insulin resistance, we investigated changes in vascular function in gluteus maximus muscle of female and male mice. Diet-induced obesity resulted in alterations in microvascular function. Obese male mice displayed impaired vasoconstriction in second order arterioles compared to lean, male mice, whereas arterioles of obese, female mice displayed significant impairments of both vasodilation and vasoconstrictor responses compared to lean, female mice. Overall, this study identifies distinct differences in how obesity impacts the female and male murine response to skeletal muscle vascular function. This work advances our understanding of sex-specific risk of metabolic complications of obesity and indicates the need for expansion of this study as well as detailed investigation of sex-specific differences in obesity pathology in the future.
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Affiliation(s)
- Danielle A Sidsworth
- Northern Medical Program, University of Northern British Columbia, Prince George, BC, V2N 4Z9, Canada
| | - Stephanie L Sellers
- Centre for Heart Lung Innovation & Department of Radiology, University of British Columba & St. Paul's Hospital, Vancouver, BC, V6Z 1Y6, Canada
| | | | - Elizabeth A Dunn
- Northern Medical Program, University of Northern British Columbia, Prince George, BC, V2N 4Z9, Canada
| | - Sarah L Gray
- Northern Medical Program, University of Northern British Columbia, Prince George, BC, V2N 4Z9, Canada
| | - Geoffrey W Payne
- Northern Medical Program, University of Northern British Columbia, Prince George, BC, V2N 4Z9, Canada
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23
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Diabetogenic diet-induced insulin resistance associates with lipid droplet proteins and adipose tissue secretome, but not with sexual dimorphic adipose tissue fat accumulation in wistar rats. Biochem Biophys Rep 2020; 24:100831. [PMID: 33088930 PMCID: PMC7559855 DOI: 10.1016/j.bbrep.2020.100831] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 12/26/2019] [Accepted: 10/06/2020] [Indexed: 12/25/2022] Open
Abstract
The role of sexual dimorphic adipose tissue fat accumulation in the development of insulin resistance is well known. However, whether vitamin A status and/or its metabolic pathway display any sex- or depot (visceral/subcutaneous)-specific pattern and have a role in sexual dimorphic adipose tissue development and insulin resistance are not completely understood. Therefore, to assess this, 5 weeks old Wistar male and female rats of eight from each sex were provided either control or diabetogenic (high fat, high sucrose) diet for 26 weeks. At the end, consumption of diabetogenic diet increased the visceral fat depots (p < 0.001) in the males and subcutaneous depot (p < 0.05) in the female rats, compared to their sex-matched controls. On the other hand, it caused adipocyte hypertrophy (p < 0.05) of visceral depot (retroperitoneal) in the females and subcutaneous depot of the male rats. Although vitamin A levels displayed sex- and depot-specific increase due to the consumption of diabetogenic diet, the expression of most of its metabolic pathway genes in adipose depots remained unaltered. However, the mRNA levels of some of lipid droplet proteins (perilipins) and adipose tissue secretory proteins (interleukins, lipocalin-2) did display sexual dimorphism. Nonetheless, the long-term feeding of diabetogenic diet impaired the insulin sensitivity, thus affected glucose clearance rate and muscle glucose-uptake in both the sexes of rats. In conclusion, the chronic consumption of diabetogenic diet caused insulin resistance in the male and female rats, but did not corroborate with sexual dimorphic adipose tissue fat accumulation or its vitamin A status. Role of vitamin A and its metabolic pathway on sexual dimorphic fat accumulation and insulin resistance was studied. Consumption of diabetogenic diet caused insulin resistance, but not associated with sexual-dimorphic fat deposition. Vitamin A accumulation displayed a sex- and fat depot-specific pattern without altering its metabolic pathway genes. However, the lipid droplet proteins and secretome of the adipose depots displayed sex- and/or depot-specific pattern.
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24
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Silvestri E, Senese R, De Matteis R, Cioffi F, Moreno M, Lanni A, Gentile A, Busiello RA, Salzano AM, Scaloni A, de Lange P, Goglia F, Lombardi A. Absence of uncoupling protein 3 at thermoneutrality influences brown adipose tissue mitochondrial functionality in mice. FASEB J 2020; 34:15146-15163. [PMID: 32946628 DOI: 10.1096/fj.202000995r] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 07/31/2020] [Accepted: 09/01/2020] [Indexed: 02/06/2023]
Abstract
The physiological role played by uncoupling protein 3 (UCP3) in brown adipose tissue (BAT) has not been fully elucidated so far. In the present study, we evaluated the impact of the absence of UCP3 on BAT mitochondrial functionality and morphology. To this purpose, wild type (WT) and UCP3 Knockout (KO) female mice were housed at thermoneutrality (30°C), a condition in which BAT contributes to energy homeostasis independently of its cold-induced thermogenic function. BAT mitochondria from UCP3 KO mice presented a lower ability to oxidize the fatty acids and glycerol-3-phosphate, and an enhanced oxidative stress as revealed by enhanced mitochondrial electron leak, lipid hydroperoxide levels, and induction of antioxidant mitochondrial enzymatic capacity. The absence of UCP3 also influenced the mitochondrial super-molecular protein aggregation, an important feature for fatty acid oxidation rate as well as for adequate cristae organization and mitochondrial shape. Indeed, electron microscopy revealed alterations in mitochondrial morphology in brown adipocytes from KO mice. In the whole, data here reported show that the absence of UCP3 results in a significant alteration of BAT mitochondrial physiology and morphology. These observations could also help to clarify some aspects of the association between metabolic disorders associated with low UCP3 levels, as previously reported in human studies.
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Affiliation(s)
- Elena Silvestri
- Department of Science and Technology, University of Sannio, Benevento, Italy
| | - Rosalba Senese
- Department of Environmental, Biological, and Pharmaceutical Sciences and Technologies, University of Campania "Luigi Vanvitelli", Caserta, Italy
| | - Rita De Matteis
- Department of Biomolecular Sciences, University of Urbino "Carlo Bo", Urbino, Italy
| | - Federica Cioffi
- Department of Science and Technology, University of Sannio, Benevento, Italy
| | - Maria Moreno
- Department of Science and Technology, University of Sannio, Benevento, Italy
| | - Antonia Lanni
- Department of Environmental, Biological, and Pharmaceutical Sciences and Technologies, University of Campania "Luigi Vanvitelli", Caserta, Italy
| | | | | | - Anna Maria Salzano
- Proteomics & Mass Spectrometry Laboratory, ISPAAM, National Research Council, Naples, Italy
| | - Andrea Scaloni
- Proteomics & Mass Spectrometry Laboratory, ISPAAM, National Research Council, Naples, Italy
| | - Pieter de Lange
- Department of Environmental, Biological, and Pharmaceutical Sciences and Technologies, University of Campania "Luigi Vanvitelli", Caserta, Italy
| | - Fernando Goglia
- Department of Science and Technology, University of Sannio, Benevento, Italy
| | - Assunta Lombardi
- Department of Biology, University of Naples Federico II, Naples, Italy
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25
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Dou JF, Puttabyatappa M, Padmanabhan V, Bakulski KM. Developmental programming: Transcriptional regulation of visceral and subcutaneous adipose by prenatal bisphenol-A in female sheep. CHEMOSPHERE 2020; 255:127000. [PMID: 32417515 PMCID: PMC7418632 DOI: 10.1016/j.chemosphere.2020.127000] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Revised: 05/04/2020] [Accepted: 05/05/2020] [Indexed: 05/15/2023]
Abstract
BACKGROUND Bisphenol-A (BPA) exposure is widespread and early life exposure is associated with metabolic syndrome. While visceral adipose tissue (VAT) and subcutaneous adipose tissue (SAT) are implicated in the development of metabolic syndrome, the adipose depot-specific effects of prenatal BPA treatment are poorly understood. OBJECTIVE To determine the impact of prenatal BPA exposure on genome-wide gene expression of VAT and SAT depots. METHODS RNA sequencing was performed on SAT and VAT from 21-month old control and prenatal BPA-treated female sheep. Gene expression and pathway differences between SAT and VAT depots with or without prenatal BPA-treatment and the effect of prenatal BPA treatment on each depot were tested. RESULTS There were 179 differentially expressed genes (padjusted < 0.05, log2-fold change >2.5) between SAT and VAT. Development and immune response pathways were upregulated in SAT, while metabolic pathways were upregulated in VAT. These adipose depot-specific genes and pathways were consistent with prenatal BPA-treatment. In SAT, BPA-treatment resulted in differential expression of 108 genes (78% upregulated with BPA) and altered pathways (immune response downregulated, RNA processing upregulated). In contrast in VAT, BPA-treatment differentially expressed 4 genes and upregulated chromatin and RNA processing pathways. CONCLUSION Prenatal BPA-treatment induces adult depot-specific alterations in RNA expression in inflammation, RNA processing, and chromatin pathways, reflecting the diverse roles of SAT and VAT in regulating lipid storage and insulin sensitivity. These adipose tissue transcriptional dysregulations may contribute to the metabolic disorders observed in prenatal BPA-treated female sheep.
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Affiliation(s)
- John F Dou
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | | | | | - Kelly M Bakulski
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI, USA.
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26
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Zhu Y, Zhang JY, Wei YL, Hao JY, Lei YQ, Zhao WB, Xiao YH, Sun AD. The polyphenol-rich extract from chokeberry ( Aronia melanocarpa L .) modulates gut microbiota and improves lipid metabolism in diet-induced obese rats. Nutr Metab (Lond) 2020; 17:54. [PMID: 32655675 PMCID: PMC7339576 DOI: 10.1186/s12986-020-00473-9] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 06/24/2020] [Indexed: 12/15/2022] Open
Abstract
The gut microbiota plays a critical role in obesity and lipid metabolism disorder. Chokeberry (Aronia melanocarpa L.) are rich in polyphenols with various physiological and pharmacological activities. We determined serum physiological parameters and fecal microbial components by using related kits, liquid chromatography-mass spectrometry (LC-MS) and 16S rRNA gene sequencing every 10 days. Real-time PCR analysis was used to measure gene expression of bile acids (BAs) and lipid metabolism in liver and adipose tissues. We analyzed the effects of different Chokeberry polyphenol (CBPs) treatment time on obesity and lipid metabolism in high fat diet (HFD)-fed rats. The results indicated that CBPs treatment prevents obesity, liver steatosis and improves dyslipidemia in HFD-fed rats. CBPs modulated the composition of the gut microbiota with the extended treatment time, reducing the Firmicutes/Bacteroidetes ratio (F/B ratio) and increasing the relative abundance of Bacteroides, Prevotella, Akkermansia and other bacterial species associated with anti-obesity properties. We found that CBPs treatment gradually decreased the total BAs pool and particularly reduced the relative content of cholic acid (CA), deoxycholic acid (DCA) and enhanced the relative content of chenodeoxycholic acid (CDCA). These changes were positively correlated Bacteroides, Prevotella and negatively correlated with Clostridium, Eubacterium, Ruminococcaceae. In liver and white adipose tissues, the gene expression of lipogenesis, lipolysis and BAs metabolism were regulated after CBPs treatment in HFD-fed rats, which was most likely mediated through FXR and TGR-5 signaling pathway to improve lipid metabolism. In addition, the mRNA expression of PPARγ, UCP1 and PGC-1α were upregulated markedly in interscapular brown adipose tissue (iBAT) after CBPs treatment. We confirmed that CBPs could reduce the body weight of HFD-fed rats by accelerating energy homeostasis and thermogenesis in iBAT. Finally, the fecal microbiota transplantation (FMT) experiment results demonstrated that FMT from CBPs-treated rats failed to reduce the weight of HFD-fed rats. However, FMT from CBPs-treated rats improved dyslipidemia and reshaped gut microbiota in HFD-fed rats. In conclusion, CBPs treatment improved obesity and complications by regulating gut microbiota in HFD-fed rats. The gut microbiota plays an important role in BAs metabolism after CBPs treatment, and BAs have therefore emerged as major effectors in microbe-host signaling events that influence host lipid metabolism, energy metabolism and thermogenesis.
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Affiliation(s)
- Yue Zhu
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083 China
| | - Jia-ying Zhang
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083 China
| | - Yu-long Wei
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083 China
| | - Jing-yi Hao
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083 China
| | - Yu-qing Lei
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083 China
| | - Wan-bin Zhao
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083 China
| | - Yu-hang Xiao
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083 China
| | - Ai-dong Sun
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083 China
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27
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Gonçalves GD, Walton SL, Gazzard SE, van der Wolde J, Mathias PCF, Moritz KM, Cullen-McEwen LA, Bertram JF. Maternal hypoxia developmentally programs low podocyte endowment in male, but not female offspring. Anat Rec (Hoboken) 2020; 303:2668-2678. [PMID: 31984678 DOI: 10.1002/ar.24369] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 12/02/2019] [Accepted: 12/08/2019] [Indexed: 11/07/2022]
Abstract
Fetal hypoxia is a common complication of pregnancy. We have previously reported that maternal hypoxia in late gestation in mice gives rise to male offspring with reduced nephron number, while females have normal nephron number. Male offspring later develop proteinuria and renal pathology, including glomerular pathology, whereas female offspring are unaffected. Given the central role of podocyte depletion in glomerular and renal pathology, we examined whether maternal hypoxia resulted in low podocyte endowment in offspring. Pregnant CD1 mice were allocated at embryonic day 14.5 to normoxic (21% oxygen) or hypoxic (12% oxygen) conditions. At postnatal day 21, kidneys from mice were immersion fixed, and one mid-hilar slice per kidney was immunostained with antibodies directed against p57 and synaptopodin for podocyte identification. Slices were cleared and imaged with a multiphoton microscope for podometric analysis. Male hypoxic offspring had significantly lower birth weight, nephron number, and podocyte endowment than normoxic male offspring (podocyte number; normoxic 62.86 ± 2.26 podocytes per glomerulus, hypoxic 53.38 ± 2.25; p < .01, mean ± SEM). In contrast, hypoxic female offspring had low birth weight but their nephron and podocyte endowment was the same as normoxic female offspring (podocyte number; normoxic 62.38 ± 1.86 podocytes per glomerulus, hypoxic 61.81 ± 1.80; p = .88). To the best of our knowledge, this is the first report of developmentally programmed low podocyte endowment. Given the well-known association between podocyte depletion in adulthood and glomerular pathology, we postulate that podocyte endowment may place offspring at risk of renal disease in adulthood, and explain the greater vulnerability of male offspring.
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Affiliation(s)
- Gessica D Gonçalves
- Development and Stem Cells Program, Biomedicine Discovery Institute and Department of Anatomy and Developmental Biology, Monash University, Melbourne, Australia.,Biological Science Program, Department of Biotechnology, Genetics and Cellular Biology, State University of Maringá, Maringá, Brazil
| | - Sarah L Walton
- School of Biomedical Sciences and Child Health Research Centre, The University of Queensland, Brisbane, Australia.,Cardiovascular Disease Program, and Department of Physiology, Biomedicine Discovery Institute, Monash University, Melbourne, Australia
| | - Sarah E Gazzard
- Development and Stem Cells Program, Biomedicine Discovery Institute and Department of Anatomy and Developmental Biology, Monash University, Melbourne, Australia
| | - James van der Wolde
- Development and Stem Cells Program, Biomedicine Discovery Institute and Department of Anatomy and Developmental Biology, Monash University, Melbourne, Australia
| | - Paulo C F Mathias
- Biological Science Program, Department of Biotechnology, Genetics and Cellular Biology, State University of Maringá, Maringá, Brazil
| | - Karen M Moritz
- School of Biomedical Sciences and Child Health Research Centre, The University of Queensland, Brisbane, Australia
| | - Luise A Cullen-McEwen
- Development and Stem Cells Program, Biomedicine Discovery Institute and Department of Anatomy and Developmental Biology, Monash University, Melbourne, Australia
| | - John F Bertram
- Development and Stem Cells Program, Biomedicine Discovery Institute and Department of Anatomy and Developmental Biology, Monash University, Melbourne, Australia
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28
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Lumish HS, O'Reilly M, Reilly MP. Sex Differences in Genomic Drivers of Adipose Distribution and Related Cardiometabolic Disorders: Opportunities for Precision Medicine. Arterioscler Thromb Vasc Biol 2019; 40:45-60. [PMID: 31747800 DOI: 10.1161/atvbaha.119.313154] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
This review focuses on the human genetics, epidemiology, and molecular pathophysiology of sex differences in central obesity, adipose distribution, and related cardiometabolic disorders. Distribution of fat is important for cardiometabolic health, with peripheral fat depots having a protective effect and central visceral fat depots conferring a detrimental effect on health. There are important sex differences in fat distribution that are masked when studying body mass index as a measure of obesity. From epidemiological, murine, and in vitro studies, several mechanisms have been proposed to explain the sex differences in adipose distribution, including sex hormonal effects, cell-intrinsic properties, and the microenvironment in fat depots. More recently, human genetics have revealed hundreds of loci for central obesity providing disruptive opportunities for mechanistic discoveries and clinical translation. A striking feature is that over one-third of these loci have reproducible but poorly understood sexual dimorphic associations with central obesity, most having stronger effects in women. Understanding the genetic and molecular mechanisms of adipose distribution and its sexual dimorphism in humans provides a unique opportunity to promote the use of precision medicine for early identification of at-risk individuals, and the development of novel therapeutic strategies for central obesity and related cardiometabolic disorders.
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Affiliation(s)
- Heidi S Lumish
- From the Division of Cardiology, Department of Medicine, Columbia University Irving Medical Center, New York, NY (H.S.L., M.O., M.P.R.)
| | - Marcella O'Reilly
- From the Division of Cardiology, Department of Medicine, Columbia University Irving Medical Center, New York, NY (H.S.L., M.O., M.P.R.)
| | - Muredach P Reilly
- From the Division of Cardiology, Department of Medicine, Columbia University Irving Medical Center, New York, NY (H.S.L., M.O., M.P.R.).,Irving Institute for Clinical and Translational Research, Columbia University, New York, NY (M.P.R.)
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Metabolic Disturbances of a High-Fat Diet Are Dependent on APOE Genotype and Sex. eNeuro 2019; 6:ENEURO.0267-19.2019. [PMID: 31554665 PMCID: PMC6795556 DOI: 10.1523/eneuro.0267-19.2019] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 09/03/2019] [Accepted: 09/18/2019] [Indexed: 01/12/2023] Open
Abstract
Apolipoprotein E4 (APOE4) is the strongest genetic risk factor for Alzheimer's disease (AD). APOE4 is also associated with an increased risk of metabolic syndrome. Obesity is a major environmental risk factor for AD. While APOE genotype and obesity independently affect metabolism and cognition, they may also have synergistic effects. Here, we examined the metabolic and behavioral alterations associated with a high-fat diet (HFD) in male and female APOE knock-in mice. Male and female mice were fed a 45% kcal HFD or a 10% kcal low-fat diet (LFD) for 12 weeks and adipose tissue accumulation, glucose levels, anxiety-like behavior, and spatial memory were examined. We found that with HFD, male APOE4 mice were more susceptible to metabolic disturbances, including visceral adipose tissue (VAT) accumulation and glucose intolerance when compared to APOE3 mice, while female APOE3 and APOE4 mice had similar metabolic responses. Behaviorally, there were no effects of HFD in mice of either genotype. Our results suggest that metabolic responses to HFD are dependent on both sex and APOE genotype.
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30
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Paes‐Silva RP, Gadelha PCFP, Lemos MDCCD, Castro CMMBD, Arruda IKGD, Diniz ADS. Adiposity, inflammation and fat‐soluble vitamins in adolescents. JORNAL DE PEDIATRIA (VERSÃO EM PORTUGUÊS) 2019. [DOI: 10.1016/j.jpedp.2018.05.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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31
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Paes-Silva RP, Gadelha PCFP, Lemos MDCCD, Castro CMMBD, Arruda IKGD, Diniz ADS. Adiposity, inflammation and fat-soluble vitamins in adolescents. J Pediatr (Rio J) 2019; 95:575-583. [PMID: 29963989 DOI: 10.1016/j.jped.2018.05.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2018] [Revised: 05/04/2018] [Accepted: 05/04/2018] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVE Evaluate the association between inflammatory process, adiposity, and vitamins A, D, and E in adolescents, according to gender. METHODS Cross-sectional study with adolescents aged 12-19 years old of both genders attending public schools in Recife. A questionnaire was used to collect data on socioeconomic level, lifestyle, and food intake of adolescents. Then, an anthropometric evaluation and a blood sampling were performed to analyze serum concentrations of α-1-acid glycoprotein, retinol, β-carotene, α-tocopherol, and 25-hydroxy-vitamin D. RESULTS The levels of α-1-acid glycoprotein were higher for abdominal obesity in both genders. Male adolescents with insufficient serum α-tocopherol levels had low levels of α-1-acid glycoprotein (p=0.03) and an increased risk of 25-hydroxy-vitamin D and β-carotene deficiency in relation to total and abdominal fat; female adolescents had an increased risk of insufficient β-carotene with abdominal obesity (PR: 1.33; 95% CI: 1.2-1.5). CONCLUSION Abdominal adiposity implies a higher risk of inflammation and causes different changes to the levels of fat-soluble vitamins according to gender.
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32
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Meisel P, Eremenko M, Holtfreter B, Völzke H, Kocher T. The sex paradox in the interplay between periodontitis, obesity, and serum C-reactive protein: Data from a general population. J Periodontol 2019; 90:1365-1373. [PMID: 31343076 DOI: 10.1002/jper.18-0733] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 03/05/2019] [Accepted: 04/14/2019] [Indexed: 12/11/2022]
Abstract
BACKGROUND Women are generally periodontally healthier than men but they exhibit higher systemic levels of inflammatory markers. Our aim is to evaluate whether this paradox may be explained by different ramifications of adiposity or body shape. METHODS In 3,268 subjects from the Study of Health in Pomerania, we determined anthropometric and periodontal parameters, C-reactive protein (CRP), and fibrinogen as markers of inflammation. Behavioural and environmental risk factors and hand grip strength were assessed as factors interfering with the outcomes in question. We evaluated sex-specific associations of adiposity characteristics and periodontal variables such as probing depth (PD) with CRP and fibrinogen. RESULTS After adjusting for age, waist-to-hip ratio (WHR), glycated hemoglobin, smoking, education, and grip strength, the opposite sex role of periodontitis and obesity on CRP levels were confirmed. WHR and body mass index (BMI) were associated with CRP in both men and women (P < 0.001). CRP was associated with PD in men (P = 0.001) but not in women (P = 0.11). When adjusted for BMI this association was attenuated in men by 15% (P = 0.002) but in women by 70% (P = 0.58). PD was related to plaque and bleeding on probing (P < 0.001) in both sexes and also to WHR in women (P = 0.026) and men (P = 0.002). BMI attenuated this association in women but not in men. HbA1c contributed significantly to PD in women (P = 0.013) but not in men (P = 0.76). CONCLUSIONS Systemic CRP concentrations are affected by periodontitis and obesity in men. In women adiposity is more significant than in men overriding the impact of periodontal measures.
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Affiliation(s)
- Peter Meisel
- Dental Clinics, Department of Periodontology, University Medicine Greifswald, Greifswald, Germany
| | - Michael Eremenko
- Dental Clinics, Department of Periodontology, University Medicine Greifswald, Greifswald, Germany
| | - Birte Holtfreter
- Dental Clinics, Department of Periodontology, University Medicine Greifswald, Greifswald, Germany
| | - Henry Völzke
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Thomas Kocher
- Dental Clinics, Department of Periodontology, University Medicine Greifswald, Greifswald, Germany
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33
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Sexual Dimorphism of Brown Adipose Tissue Function. J Pediatr 2019; 210:166-172.e1. [PMID: 30979545 DOI: 10.1016/j.jpeds.2019.03.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 03/05/2019] [Accepted: 03/05/2019] [Indexed: 12/12/2022]
Abstract
OBJECTIVE To determine whether brown adipose tissue (BAT) activity in school-age children differs between the sexes and to explore the impact of dietary intake, sedentary behavior, and picky/fussy eating. STUDY DESIGN Children aged 8.5-11.8 years of age (n = 36) underwent infrared thermography to determine the temperature of the skin overlying the main superficial BAT depot in the supraclavicular region before and after 5 minutes of mild cold exposure (single-hand immersion in cool tap water at about 20°C). The relationships between the supraclavicular region temperature and parental reports of food consumption, eating behavior, and inactivity were explored. RESULTS The supraclavicular region temperature was higher in boys (n = 16) at baseline, and after cold exposure. Boys displayed a greater thermogenic response to cold. Strong negative correlations were observed between the supraclavicular region temperature and body mass index percentile, and differences in supraclavicular region temperature between girls and boys persisted after adjustment for body mass index percentile. A negative linear relationship was observed between protein and vegetable intake and supraclavicular region temperature in girls only, but did not persist after adjustment for multiple comparisons. There was no difference in the adjusted supraclavicular region temperature between active or inactive children, or picky and nonpicky eaters. CONCLUSIONS These findings indicate sexual dimorphism in BAT thermogenic activity and a sex-specific impact of diet. Future studies should aim to quantify the contribution of BAT to childhood energy expenditure, energy imbalance, and any role in the origins of childhood obesity.
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Wu CJ, Kao TW, Chen YY, Yang HF, Chen WL. Peripheral fat distribution versus waist circumference for predicting mortality in metabolic syndrome. Diabetes Metab Res Rev 2019; 35:e3116. [PMID: 30548993 DOI: 10.1002/dmrr.3116] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 11/16/2018] [Accepted: 11/30/2018] [Indexed: 01/05/2023]
Abstract
OBJECTIVE To elucidate whether the peripheral fat (PF)-combined definition of metabolic syndrome (MetS) would show a better predictive ability for cause-specific mortality than the common MetS. METHODS Data were derived from the National Health and Nutrition Examination Survey from 1999 through 2002. We investigated three types of MetS including waist circumference MetS (WCMetS), PFMetS, and PF-combined definition of MetS. The main outcome was to evaluate the predictive ability of the newly defined MetS for time to cause-specific mortality. The secondary outcomes were the relationships between the PF percentage and C-reactive protein (CRP) and homeostasis model assessment of insulin resistance (HOMA-IR) to clarify the gender discrepancy. RESULTS For cardiovascular mortality, the adjusted hazard ratios for WCMetS, PFMetS, and PF-combined definition MetS were 1.867, 1.742, and 2.117, respectively (all P < 0.001). A positive association between PF percentage and CRP in men and a negative correlation between PF percentage and HOMA-IR in women after adjustment for all variates were found. CONCLUSIONS The PF-combined definition of MetS had a stronger predictive ability for all-cause and cardiovascular mortality than general MetS. Notably, the PF might have differential gender-specific health effects on cardiovascular events.
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Affiliation(s)
- Chen-Jung Wu
- Division of Family Medicine, Department of Community Medicine, Taoyuan Armed Forces General Hospital, Taoyuan, Taiwan, Republic of China
- Division of Family Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, Republic of China
| | - Tung-Wei Kao
- Division of Family Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, Republic of China
- Division of Geriatric Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, Republic of China
- Graduate Institute of Clinical Medical, College of Medicine, National Taiwan University, Taipei, Taiwan, Republic of China
| | - Yuan-Yuei Chen
- Department of Internal Medicine, Tri-Service General Hospital Songshan Branch, National Defense Medical Center, Taipei, Taiwan, Republic of China
| | - Hui-Fang Yang
- Division of Family Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, Republic of China
- Division of Geriatric Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, Republic of China
| | - Wei-Liang Chen
- Division of Family Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, Republic of China
- Division of Geriatric Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, Republic of China
- Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei, Taiwan, Republic of China
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Chen YY, Fang WH, Wang CC, Kao TW, Yang HF, Wu CJ, Sun YS, Wang YC, Chen WL. Fat-to-muscle ratio is a useful index for cardiometabolic risks: A population-based observational study. PLoS One 2019; 14:e0214994. [PMID: 30964893 PMCID: PMC6456204 DOI: 10.1371/journal.pone.0214994] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 03/26/2019] [Indexed: 12/14/2022] Open
Abstract
Metabolic disorders are prevalent worldwide and have recently become public health problems recently. Previous studies have proposed different body composition indices for predicting future cardiovascular risks. We hypothesized an association among fat-to-muscle ratio (FMR), metabolic syndrome (MetS), hypertension (HTN), prediabetes, type 2 diabetes mellitus (DM), and cardiovascular risk in an adult population. A total of 66829 eligible subjects composed of 34182 males and 32647 females aged 20 years or older were obtained from health examinations in the Tri-Service General Hospital from 2011 to 2017. The body composition indices included fat and muscle mass measured by bioelectrical impedance analysis. A multivariable regression model was performed in a large population-based cross-sectional study. FMR was significantly associated with MetS, prediabetes, DM and HTN in all models of both genders. Based on quartile analysis, higher FMR had higher predictive ability for adverse health outcomes. The association between different definitions of MetS and the Framingham risk score was analyzed, and FMR-incorporated MetS was more useful for predicting higher Framingham risk scores than traditional definitions. FMR was a useful indicator for the presence of adverse cardiometabolic risks. Compared to traditional definition of MetS, FMR-incorporated MetS had a greater ability to predict incident cardiovascular risks. FMR seemed to be a simple and effective index for the early prevention and management of cardiometabolic events.
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Affiliation(s)
- Yuan-Yuei Chen
- Department of Internal Medicine, Tri-Service General Hospital Songshan Branch, Taipei, Taiwan, Republic of China
- Division of Family Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, School of Medicine, National Defense Medical Center, Taipei, Taiwan, Republic of China
| | - Wen-Hui Fang
- Division of Family Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, School of Medicine, National Defense Medical Center, Taipei, Taiwan, Republic of China
| | - Chung-Ching Wang
- Division of Family Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, School of Medicine, National Defense Medical Center, Taipei, Taiwan, Republic of China
| | - Tung-Wei Kao
- Division of Family Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, School of Medicine, National Defense Medical Center, Taipei, Taiwan, Republic of China
- Division of Geriatric Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, School of Medicine, National Defense Medical Center, Taipei, Taiwan, Republic of China
- Graduate Institute of Clinical Medical, College of Medicine, National Taiwan University, Taipei, Taiwan, Republic of China
| | - Hui-Fang Yang
- Division of Family Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, School of Medicine, National Defense Medical Center, Taipei, Taiwan, Republic of China
- Division of Geriatric Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, School of Medicine, National Defense Medical Center, Taipei, Taiwan, Republic of China
| | - Chen-Jung Wu
- Division of Family Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, School of Medicine, National Defense Medical Center, Taipei, Taiwan, Republic of China
- Division of Geriatric Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, School of Medicine, National Defense Medical Center, Taipei, Taiwan, Republic of China
- Division of Family Medicine, Department of Community Medicine, Taoyuan Armed Forces General Hospital, Taoyuan, Taiwan, Republic of China
| | - Yu-Shan Sun
- Division of Family Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, School of Medicine, National Defense Medical Center, Taipei, Taiwan, Republic of China
- Division of Geriatric Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, School of Medicine, National Defense Medical Center, Taipei, Taiwan, Republic of China
| | - Ying-Chuan Wang
- Division of Family Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, School of Medicine, National Defense Medical Center, Taipei, Taiwan, Republic of China
| | - Wei-Liang Chen
- Division of Family Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, School of Medicine, National Defense Medical Center, Taipei, Taiwan, Republic of China
- Division of Geriatric Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, School of Medicine, National Defense Medical Center, Taipei, Taiwan, Republic of China
- * E-mail:
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Ofstad AP, Sommer C, Birkeland KI, Bjørgaas MR, Gran JM, Gulseth HL, Johansen OE. Comparison of the associations between non-traditional and traditional indices of adiposity and cardiovascular mortality: an observational study of one million person-years of follow-up. Int J Obes (Lond) 2019; 43:1082-1092. [PMID: 30926954 PMCID: PMC6760583 DOI: 10.1038/s41366-019-0353-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 09/02/2018] [Accepted: 01/30/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND/OBJECTIVE The most widely used adiposity index, body mass index (BMI), is not optimal to evaluate cardiovascular (CV) risk associated with overweight and obesity. We aimed to explore the association between traditional and non-traditional adiposity indices and CV mortality, and compare their discriminative ability for CV death. METHODS We studied participants (age 19-79 years, BMI ≥18.5 kg/m2) from the population-based Norwegian Nord-Trøndelag Health Study 2 (HUNT 2). Traditional indices explored were BMI, waist circumference (WC) and waist- to-hip ratio, whereas non-traditional were estimated total body fat (eTBF), which is a sex-specific fat%-index, index of central obesity (WC/height) and a body shape index (ABSI) [WC/(BMI2/3 × √height)]. Associations between the traditional and non-traditional indices and CV death, obtained from the Norwegian Cause of Death Registry, were explored by Cox proportional hazard regression, and the indices' discriminative ability by Harrell's C statistics. RESULTS Baseline assessments were done from 1995 to 1997 and the population (n = 61,016, 52% women) was observed for 17.7 ± 4.2 years (until 2016), yielding 1,080,473.6 person-years of follow-up. Thirteen thousand one hundred and ninety five (21.6%) subjects died, of whom 4908 (37.2%) died from CV causes. Across genders, eTBF had the strongest association to CV death (unadjusted hazard ratios [HRs] 4th vs. 1st quartile in women and men 13.38 [95% confidence interval (CI): 11.05-16.22] and 9.32 [8.03-10.81], respectively), together with index of central obesity in women and ABSI in men. The other indices showed weaker associations, in particular BMI in men: 1.73 [1.56-1.93]. Age adjustment attenuated the associations, but the pattern remained. In concordance with this, C-statistics was C = 0.725 [0.713-0.737] in women and 0.711 [0.701-0.721] in men for eTBF, and C = 0.622 [0.610-0.634] in women and 0.551 [0.541-0.562] in men for BMI. CONCLUSION eTBF, a sex-specific total body fat index, was more strongly associated with CV death than other adiposity indices and may be a suitable clinical tool for assessment of obesity-associated CV risk.
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Affiliation(s)
- Anne Pernille Ofstad
- Department of Medical Research, Bærum Hospital, Vestre Viken Hospital Trust, Gjettum, Norway. .,Medical Department, Boehringer Ingelheim Norway, Asker, Norway.
| | - Christine Sommer
- Department of Endocrinology, Morbid Obesity and Preventive Medicine, Oslo University Hospital, Oslo, Norway
| | - Kåre I Birkeland
- Department of Transplantation Medicine, Oslo University Hospital, Rikshospitalet, Norway.,Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Marit Rokne Bjørgaas
- Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, NTNU, Norwegian University of Science and Technology, Trondheim, Norway.,Department of Endocrinology, St. Olav's Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Jon Michael Gran
- Oslo Centre for Biostatistics and Epidemiology, Oslo University Hospital and University of Oslo, Oslo, Norway
| | - Hanne Løvdal Gulseth
- Department of Endocrinology, Morbid Obesity and Preventive Medicine, Oslo University Hospital, Oslo, Norway
| | - Odd Erik Johansen
- Department of Medical Research, Bærum Hospital, Vestre Viken Hospital Trust, Gjettum, Norway.,Medical Department, Boehringer Ingelheim Norway, Asker, Norway
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Jones NS, Rebeck GW. The Synergistic Effects of APOE Genotype and Obesity on Alzheimer's Disease Risk. Int J Mol Sci 2018; 20:ijms20010063. [PMID: 30586872 PMCID: PMC6337558 DOI: 10.3390/ijms20010063] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 12/19/2018] [Accepted: 12/20/2018] [Indexed: 12/17/2022] Open
Abstract
The APOE gene has three common alleles—E2, E3, and E4, with APOE4 being the strongest genetic risk factor for developing Alzheimer’s Disease (AD). Obesity is a global epidemic and contributes to multiple metabolic problems. Obesity is also a risk factor for cognitive decline. Here, we review the effects of APOE4 and obesity on cognition and AD development, independently and together. We describe studies that have associated APOE4 with cognitive deficits and AD, as well as studies that have associated obesity to cognitive deficits and AD. We then describe studies that have examined the effects of obesity and APOE genotypes together, with a focus on APOE4 and high fat diets. Both human studies and rodent models have contributed to understanding the effects of obesity on the different APOE genotypes, and we outline possible underlying mechanisms associated with these effects. Data across approaches support a model in which APOE4 and obesity combine for greater detrimental effects on metabolism and cognition, in ways that are influenced by both age and sex.
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Affiliation(s)
- Nahdia S Jones
- Department of Neuroscience, Georgetown University, 3970 Reservoir Rd NW, Washington, DC 20007, USA.
| | - G William Rebeck
- Department of Neuroscience, Georgetown University, 3970 Reservoir Rd NW, Washington, DC 20007, USA.
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The relationship between epicardial adipose tissue and coronary artery stenosis by sex and menopausal status in patients with suspected angina. Biol Sex Differ 2018; 9:52. [PMID: 30547834 PMCID: PMC6295015 DOI: 10.1186/s13293-018-0212-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 12/04/2018] [Indexed: 01/11/2023] Open
Abstract
Background Evidence suggests that epicardial adipose tissue (EAT) is closely related to coronary artery stenosis (CAS). However, sexual dimorphism may be present in adipose tissue, and its influence on CAS between men and women is controversial. We assessed the relationship between EAT and CAS by sex and menopausal status in patients with suspected angina. Methods Six hundred twenty-eight consecutive patients (men/women n = 257/371; mean age = 59.9 ± 10.2 years) who had chest pain for angina and underwent coronary angiography were included. CAS was defined as > 50% luminal narrowing of at least one epicardial coronary artery. EAT thickness was measured by transthoracic echocardiography. Results Of the 628 patients, 52.1% (n = 134) of men and 35.3% (n = 131) of women had CAS. The mean EAT thickness was not different between men and women and was larger in patients with CAS (8.04 ± 2.39 vs 6.58 ± 1.88 mm, P < 0.001). EAT thickness was independently associated with CAS in both sexes (P < 0.001). The odds ratio (OR) of EAT for the presence of CAS was higher in men (OR = 1.43, 95% confidence interval [CI] 1.21–1.69) than in women (OR = 1.24, 95% CI 1.10–1.40). EAT thickness was larger in postmenopausal women than in premenopausal women (7.59 ± 2.25 vs 5.80 ± 1.57 mm, P < 0.001) and was independently related with CAS (OR = 1.24, 95% CI 1.09–1.41). This was not the case in premenopausal women. Conclusion In patients with suspected angina, an increase in EAT thickness was independently related to the presence of CAS in both men and women, with it being stronger in men. According to menopausal status in women, EAT thickness is significantly associated with CAS only in postmenopausal women.
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Thiberge C, Charpentier C, Gillibert A, Modzelewski R, Dacher JN, Savoye G, Savoye-Collet C. Lower Subcutaneous or Visceral Adiposity Assessed by Abdominal Computed Tomography Could Predict Adverse Outcome in Patients With Crohn's Disease. J Crohns Colitis 2018; 12:1429-1437. [PMID: 30260374 DOI: 10.1093/ecco-jcc/jjy124] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND AND AIMS Changes in body composition have been described in patients with Crohn's disease, but their predictive performances on disease evolution remain undefined. The aims of our study were to assess, in patients with Crohn's disease requiring abdominal computed tomography, body composition by computed tomography, and to study the outcome according to various body composition parameters at the time of the computed tomography. METHODS Patients with Crohn's disease who underwent abdominal computed tomography for suspected complications were retrospectively included. The definition of adverse outcome included death or need for surgery within 6 months of the computed tomography. Skeletal muscle index and visceral and subcutaneous adiposity indexes were calculated from tissue surface areas measured at the third lumbar vertebra, divided by the height squared. RESULTS The prevalence of underweight was 26.8% and the prevalence of sarcopenia was 33.6%. After gender adjustment, skeletal muscle index tended to be reduced in patients with adverse outcome, compared with patients without surgery or death [p = 0.07]. Moreover, subcutaneous adiposity index and visceral adiposity index were significantly lower in patients with surgery or death [p = 0.009 and p < 0.001, respectively]. These differences were almost equivalent in both genders for the subcutaneous adiposity index but were clearly stronger in men for the visceral adiposity index. CONCLUSIONS Subcutaneous and visceral adiposity indexes correlate inversely with adverse outcome in patients with Crohn's disease. Alteration of body composition assessed by computed tomography in these patients appears to be a marker of disease severity.
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Affiliation(s)
- Claire Thiberge
- Rouen University Hospital, Department of Radiology, Rouen cedex, France
| | - Cloé Charpentier
- Rouen University Hospital, Department of Radiology, Rouen cedex, France.,Department of Gastroenterology, Rouen University Hospital-Charles Nicolle, Rouen cedex, France
| | - André Gillibert
- Department of Biostatistics, Rouen University Hospital-Charles Nicolle, Rouen cedex, France
| | | | | | - Guillaume Savoye
- Department of Gastroenterology, Rouen University Hospital-Charles Nicolle, Rouen cedex, France
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Wang J, Jia Y, Wang L, Li D, Wang L, Zhu Y, Liu J, Gong J. Vasodilator-Stimulated Phosphoprotein: Regulators of Adipokines Resistin and Phenotype Conversion of Epicardial Adipocytes. Med Sci Monit 2018; 24:6010-6020. [PMID: 30156215 PMCID: PMC6126413 DOI: 10.12659/msm.908111] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Background Endothelial dysfunction plays a central part in the pathogenesis of coronary atherosclerosis. The adipokine resistin is one of the key players in endothelial cell dysfunction. In addition, the role of epicardial fat in coronary artery endothelial dysfunction is also emphasized. We investigated whether vasodilator-stimulated phosphoprotein (VASP) is involved in resistin-related endothelial dysfunction and the phenotype conversion of epicardial adipocytes. Material/Methods Cell proliferation and migration were evaluated by MTT and Transwell chamber assay, respectively. Next, we took epicardial fat samples from patients with valvular heart disease and non-coronary artery disease. Gene expression was determined by reverse transcription-quantitative polymerase chain reaction and relative abundance of the protein by Western blotting. Results Resistin induced endothelial proliferation and migration in a dose-dependent manner. Both resistin-induced cell proliferation and migration were effectively blocked by ablation of VASP. The brown adipose tissue-specific genes for uncoupling protein 1 (UCP-1) and PR-domain-missing16 (PRDM16) decreased, but the white adipose tissue-specific genes for resistin and RIP140 increased in VASP-deficient adipocytes compared with the LV-sicntr group. However, disruption of the Ras homolog gene family member A (RhoA) /Rho-associated kinase (ROCK) in VASP-deficient adipocytes with specific inhibitors inverted the adipocyte phenotype existing in VASP-deficient adipocytes. Furthermore, the expressions of proinflammatory cytokines interleukin-6 (IL-6), interleukin-8 (IL-8), and monocyte chemoattractantprotein-1 (MCP-1) in VASP-deficient adipocytes were markedly upregulated compared with the LV-sicntr group. Conclusions These results suggest a physiological role for VASP in coronary atherosclerosis through regulating adipokine resistin and phenotype conversion of epicardial adipose tissue.
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Affiliation(s)
- Jing Wang
- Department of Cardiology, Jinling Hospital, School of Clinical Medicine, Nanjing University, Nanjing, Jiangsu, China (mainland)
| | - Yan Jia
- Department of Cardiology, Jinling Hospital, School of Clinical Medicine, Nanjing University, Nanjing, Jiangsu, China (mainland)
| | - Lijun Wang
- Department of Cardiology, Jinling Hospital, School of Clinical Medicine, Nanjing University, Nanjing, Jiangsu, China (mainland)
| | - Demin Li
- Department of Cardiothoracic Surgery, Jinling Hospital, School of Clinical Medicine, Nanjing University, Nanjing, Jiangsu, China (mainland)
| | - Lei Wang
- Department of Cardiology, Jinling Hospital, School of Clinical Medicine, Nanjing University, Nanjing, Jiangsu, China (mainland)
| | - Ying Zhu
- Department of Cardiology, Jinling Hospital, School of Clinical Medicine, Nanjing University, Nanjing, Jiangsu, China (mainland)
| | - Jing Liu
- Department of Cardiology, Jinling Hospital, School of Clinical Medicine, Nanjing University, Nanjing, Jiangsu, China (mainland)
| | - Jianbin Gong
- Department of Cardiology, Jinling Hospital, School of Clinical Medicine, Nanjing University, Nanjing, Jiangsu, China (mainland)
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Abstract
PURPOSE OF REVIEW As the ongoing epidemic of adult and childhood obesity grows, it puts a greater burden on individuals and the healthcare system due to increased prevalence of obesity-associated diseases. An important area that has gained much attention recently is the sex and gender difference related to obesity and associated complications. Basic science and clinical studies have now improved our understanding of obesity and have discovered adipose tissue biology to be key in metabolism. RECENT FINDINGS There is evidence related to the sex dichotomy in obesity in a variety of areas including adipocyte function, sex hormone effects, genetics, and metabolic inflammation leading to critical differences in adipose tissue biology. The sex and gender difference in adipose tissue is a factor that should be considered when studying an individuals' risk for obesity and metabolic dysfunction. This understanding is important for strategizing treatment and prevention measures.
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Affiliation(s)
- Eric Chang
- Pediatric Endocrinology, University of Michigan Medical School, Medical Professional Building, D1205 1500 E. Medical Center Drive, Ann Arbor, MI, 48109-5718, USA
| | - Mita Varghese
- Pediatric Endocrinology, University of Michigan Medical School, Medical Professional Building, D1205 1500 E. Medical Center Drive, Ann Arbor, MI, 48109-5718, USA
| | - Kanakadurga Singer
- Pediatric Endocrinology, University of Michigan Medical School, Medical Professional Building, D1205 1500 E. Medical Center Drive, Ann Arbor, MI, 48109-5718, USA.
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Body Composition in Relation to Clinical Outcomes in Renal Cell Cancer: A Systematic Review and Meta-analysis. Eur Urol Focus 2018; 4:420-434. [DOI: 10.1016/j.euf.2016.11.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 10/24/2016] [Accepted: 11/16/2016] [Indexed: 11/19/2022]
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Lineker C, Kerr PM, Nguyen P, Bloor I, Astbury S, Patel N, Budge H, Hemmings DG, Plane F, Symonds ME, Bell RC. High fructose consumption in pregnancy alters the perinatal environment without increasing metabolic disease in the offspring. Reprod Fertil Dev 2018; 28:2007-2015. [PMID: 26143929 DOI: 10.1071/rd15119] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Accepted: 06/04/2015] [Indexed: 12/12/2022] Open
Abstract
Maternal carbohydrate intake is one important determinant of fetal body composition, but whether increased exposure to individual sugars has long-term adverse effects on the offspring is not well established. Therefore, we examined the effect of fructose feeding on the mother, placenta, fetus and her offspring up to 6 months of life when they had been weaned onto a standard rodent diet and not exposed to additional fructose. Dams fed fructose were fatter, had raised plasma insulin and triglycerides from mid-gestation and higher glucose near term. Maternal resistance arteries showed changes in function that could negatively affect regulation of blood pressure and tissue perfusion in the mother and development of the fetus. Fructose feeding had no effect on placental weight or fetal metabolic profiles, but placental gene expression for the glucose transporter GLUT1 was reduced, whereas the abundance of sodium-dependent neutral amino acid transporter-2 was raised. Offspring born to fructose-fed and control dams were similar at birth and had similar post-weaning growth rates, and neither fat mass nor metabolic profiles were affected. In conclusion, raised fructose consumption during reproduction results in pronounced maternal metabolic and vascular effects, but no major detrimental metabolic effects were observed in offspring up to 6 months of age.
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Affiliation(s)
- Christopher Lineker
- Division of Human Nutrition, Department of Agricultural, Food and Nutritional Sciences, University of Alberta, Edmonton, Alberta T6G 2E1, Canada
| | - Paul M Kerr
- Department of Pharmacology, University of Alberta, Edmonton, Alberta T6G 2E1, Canada
| | - Patricia Nguyen
- Department of Pharmacology, University of Alberta, Edmonton, Alberta T6G 2E1, Canada
| | - Ian Bloor
- Early Life Research Group, Academic Division of Child Health, Obstetrics and Gynaecology, School of Medicine, Queen's Medical Centre, University Hospital, The University of Nottingham, Nottingham NG7 2UH, UK
| | - Stuart Astbury
- Division of Human Nutrition, Department of Agricultural, Food and Nutritional Sciences, University of Alberta, Edmonton, Alberta T6G 2E1, Canada
| | - Nikhil Patel
- Division of Human Nutrition, Department of Agricultural, Food and Nutritional Sciences, University of Alberta, Edmonton, Alberta T6G 2E1, Canada
| | - Helen Budge
- Early Life Research Group, Academic Division of Child Health, Obstetrics and Gynaecology, School of Medicine, Queen's Medical Centre, University Hospital, The University of Nottingham, Nottingham NG7 2UH, UK
| | - Denise G Hemmings
- Department of Obstetrics and Gynecology, University of Alberta, Edmonton, Alberta T6G 2E1, Canada
| | - Frances Plane
- Department of Pharmacology, University of Alberta, Edmonton, Alberta T6G 2E1, Canada
| | - Michael E Symonds
- Early Life Research Group, Academic Division of Child Health, Obstetrics and Gynaecology, School of Medicine, Queen's Medical Centre, University Hospital, The University of Nottingham, Nottingham NG7 2UH, UK
| | - Rhonda C Bell
- Division of Human Nutrition, Department of Agricultural, Food and Nutritional Sciences, University of Alberta, Edmonton, Alberta T6G 2E1, Canada
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Chen YC, Lai SH, Tsai YW, Chang SS. Visceral Adiposity Index as a Predictor of Chronic Kidney Disease in a Relatively Healthy Population in Taiwan. J Ren Nutr 2018; 28:91-100. [DOI: 10.1053/j.jrn.2017.07.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Revised: 07/23/2017] [Accepted: 07/24/2017] [Indexed: 11/11/2022] Open
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Petrus P, Bialesova L, Checa A, Kerr A, Naz S, Bäckdahl J, Gracia A, Toft S, Dahlman-Wright K, Hedén P, Dahlman I, Wheelock CE, Arner P, Mejhert N, Gao H, Rydén M. Adipocyte Expression of SLC19A1 Links DNA Hypermethylation to Adipose Tissue Inflammation and Insulin Resistance. J Clin Endocrinol Metab 2018; 103:710-721. [PMID: 29121255 DOI: 10.1210/jc.2017-01382] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2017] [Accepted: 11/02/2017] [Indexed: 02/07/2023]
Abstract
CONTEXT Insulin resistance (IR) is promoted by a chronic low-grade inflammation in white adipose tissue (WAT). The latter might be regulated through epigenetic mechanisms such as DNA methylation. The one carbon cycle (1CC) is a central metabolic process governing DNA methylation. OBJECTIVE To identify adipocyte-expressed 1CC genes linked to WAT inflammation, IR, and their causal role. DESIGN Cohort study. SETTING Outpatient academic clinic. PARTICIPANTS Obese and nonobese subjects. METHODS Gene expression and DNA methylation arrays were performed in subcutaneous WAT and isolated adipocytes. In in vitro differentiated human adipocytes, gene knockdown was achieved by small interfering RNA, and analyses included microarray, quantitative polymerase chain reaction, DNA methylation by enzyme-linked immunosorbent assay and pyrosequencing, protein secretion by enzyme-linked immunosorbent assay, targeted metabolomics, and luciferase reporter and thermal shift assays. MAIN OUTCOME MEASURES Effects on adipocyte inflammation. RESULTS In adipocytes from obese individuals, global DNA hypermethylation was associated positively with gene expression of proinflammatory pathways. Among the 1CC genes, IR in vivo and proinflammatory gene expression in WAT were most strongly and inversely associated with SLC19A1, a gene encoding a membrane folate carrier. SLC19A1 knockdown in human adipocytes perturbed intracellular 1CC metabolism, induced global DNA hypermethylation, and increased expression of proinflammatory genes. Several CpG loci linked SLC19A1 to inflammation; validation studies were focused on the chemokine C-C motif chemokine ligand 2 (CCL2) in which methylation in the promoter (cg12698626) regulated CCL2 expression and CCL2 secretion through altered transcriptional activity. CONCLUSIONS Reduced SLC19A1 expression in human adipocytes induces DNA hypermethylation, resulting in increased expression of specific proinflammatory genes, including CCL2. This constitutes an epigenetic mechanism that might link dysfunctional adipocytes to WAT inflammation and IR.
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Affiliation(s)
- Paul Petrus
- Department of Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Lucia Bialesova
- Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden
| | - Antonio Checa
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Alastair Kerr
- Department of Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Shama Naz
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Jesper Bäckdahl
- Department of Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Ana Gracia
- Department of Nutrition and Food Science, University of Basque Country (UPV/EHU), Vitoria, Spain
- CIBER Physiopathology of Obesity and Nutrition, Institute of Health Carlos III, Madrid, Spain
| | - Sofia Toft
- Department of Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Karin Dahlman-Wright
- Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden
| | - Per Hedén
- Department of Plastic Surgery, Akademikliniken, Stockholm, Sweden
| | - Ingrid Dahlman
- Department of Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Craig E Wheelock
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Peter Arner
- Department of Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Niklas Mejhert
- Department of Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Hui Gao
- Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden
| | - Mikael Rydén
- Department of Medicine, Karolinska Institutet, Stockholm, Sweden
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Liu M, Liu H, Liang F, Song XQ, Hu PA. Neuropeptide Y promotes adipogenic differentiation in primary cultured human adipose-derived stem cells. Endocr J 2018; 65:43-52. [PMID: 28954935 DOI: 10.1507/endocrj.ej17-0017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Neuropeptide Y (NPY) is an important neurotransmitter in the control of energy metabolism. Several studies have shown that obesity is associated with increased levels of NPY in the hypothalamus. We hypothesized that the release of NPY has coordinated and integrated effects on energy metabolism in different tissues, such as adipocyte tissue, resulting in increased energy storage and decreased energy expenditure. Whether NPY has role in the molecular mechanism of human adipocyte tissue remains unclear. We established the model of human adipose derived stem cells (hADSCs) from human adipose tissue and differentiated it into adipocytes in the presence of NPY at different concentrations (10-15-10-6 mmol/L). We then assessed hADSCs proliferation and differentiation by quantifying lipid accumulation and examining the expression levels of related adipocyte markers after differentiation. Furthermore, the specific markers of white adipocyte tissue (WAT) in hADSCs were also analyzed. The results showed that low doses of NPY stimulated hADSCs proliferation (p < 0.05), while high doses of NPY inhibited hADSCs proliferation (p < 0.05). NPY significantly promoted lipid accumulation and increased the size of lipid droplets during human adipogenic differentiation; the levels of adipocyte markers PPAR-γ and C/EBPα were also increased. At the same time, NPY also increased the levels of WAT markers Cidec and RIP140 after adipocyte differentiation. The results suggested high dose NPY inhibits the proliferation of hADSCs while promotes adipocyte differentiation and increases the expression of WAT markers. This may be the reason why increased levels of NPY can lead to a rise in body weight.
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Affiliation(s)
- Min Liu
- Department of Clinical Nutrition, the Third Xiangya Hospital of Central South University, Changsha 410013, Hunan, China
| | - Hong Liu
- Department of Clinical Nutrition, the Third Xiangya Hospital of Central South University, Changsha 410013, Hunan, China
| | - Fang Liang
- Department of Endocrinology, the Third Xiangya Hospital of Central South University, Changsha 410013, Hunan, China
| | - Xiao-Qin Song
- Department of Endocrinology, the Third Xiangya Hospital of Central South University, Changsha 410013, Hunan, China
| | - Ping-An Hu
- Department of Endocrinology, the Third Xiangya Hospital of Central South University, Changsha 410013, Hunan, China
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Moser VA, Pike CJ. Obesity Accelerates Alzheimer-Related Pathology in APOE4 but not APOE3 Mice. eNeuro 2017; 4:ENEURO.0077-17.2017. [PMID: 28612048 PMCID: PMC5469027 DOI: 10.1523/eneuro.0077-17.2017] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Revised: 05/17/2017] [Accepted: 05/22/2017] [Indexed: 12/25/2022] Open
Abstract
Alzheimer's disease (AD) risk is modified by both genetic and environmental risk factors, which are believed to interact to cooperatively modify pathogenesis. Although numerous genetic and environmental risk factors for AD have been identified, relatively little is known about potential gene-environment interactions in regulating disease risk. The strongest genetic risk factor for late-onset AD is the ε4 allele of apolipoprotein E (APOE4). An important modifiable risk factor for AD is obesity, which has been shown to increase AD risk in humans and accelerate development of AD-related pathology in rodent models. Potential interactions between APOE4 and obesity are suggested by the literature but have not been thoroughly investigated. In the current study, we evaluated this relationship by studying the effects of diet-induced obesity (DIO) in the EFAD mouse model, which combines familial AD transgenes with human APOE3 or APOE4. Male E3FAD and E4FAD mice were maintained for 12 weeks on either a control diet or a Western diet high in saturated fat and sugars. We observed that metabolic outcomes of DIO were similar in E3FAD and E4FAD mice. Importantly, our data showed a significant interaction between diet and APOE genotype on AD-related outcomes in which Western diet was associated with robust increases in amyloid deposits, β-amyloid burden, and glial activation in E4FAD but not in E3FAD mice. These findings demonstrate an important gene-environment interaction in an AD mouse model that suggests that AD risk associated with obesity is strongly influenced by APOE genotype.
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Affiliation(s)
- V Alexandra Moser
- Neuroscience Graduate Program, Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089
| | - Christian J Pike
- Neuroscience Graduate Program, Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089
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48
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Novelle MG, Vázquez MJ, Peinado JR, Martinello KD, López M, Luckman SM, Tena-Sempere M, Malagón MM, Nogueiras R, Diéguez C. Sequential Exposure to Obesogenic Factors in Females Rats: From Physiological Changes to Lipid Metabolism in Liver and Mesenteric Adipose Tissue. Sci Rep 2017; 7:46194. [PMID: 28387334 PMCID: PMC5384043 DOI: 10.1038/srep46194] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Accepted: 03/10/2017] [Indexed: 12/16/2022] Open
Abstract
During their lifetime, females are subjected to different nutritional and hormonal factors that could increase the risk of obesity and associated comorbidities. From early postnatal periods until the postmenopausal phase, exposure to over nutrition, high-energy diet and oestrogen deficiency, are considered as significant obesity risk factors in women. In this study, we assessed how key transitional life events and exposure to different nutrition influence energy homeostasis in a rat model. Specifically, we assessed the sequential exposure to postnatal over nutrition, high-fat diet (HFD) after weaning, followed later by ovariectomy (OVX; as a model of menopause). Each obesity risk factor increased significantly body weight (BW) and adiposity, with additive effects after sequential exposure. Increased energy intake in both HFD and/or OVX groups, and decreased locomotor activity and energy expenditure after OVX can explain these metabolic changes. Our study also documents decreased lipogenic pathway in mesenteric adipose tissue after HFD and/or OVX, independent of previous postnatal programming, yet only HFD evoked this effect in liver. In addition, we report an increase in the expression of the hepatic PEPCK depending on previous metabolic status. Overall, our results identify the impact of different risk factors, which will help in understanding the development of obesity in females.
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Affiliation(s)
- Marta G Novelle
- Department of Physiology, CIMUS, University of Santiago de Compostela-Instituto de Investigación Sanitaria (IDIS), Santiago de Compostela, Spain.,CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, Santiago de Compostela, Spain.,Faculty of Biology, Medicine and Health, University of Manchester, AV Hill Building, Manchester, UK
| | - María J Vázquez
- Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC)/University of Córdoba/Reina Sofia University Hospital, Edificio IMIBIC, Avda. Menéndez Pidal s/n, 14004 Córdoba, Spain.,Department of Medical Sciences, Faculty of Medicine, Ciudad Real, Spain
| | - Juan R Peinado
- Department of Medical Sciences, Faculty of Medicine, Ciudad Real, Spain
| | - Kátia D Martinello
- Department of Physiology, CIMUS, University of Santiago de Compostela-Instituto de Investigación Sanitaria (IDIS), Santiago de Compostela, Spain.,CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, Santiago de Compostela, Spain
| | - Miguel López
- Department of Physiology, CIMUS, University of Santiago de Compostela-Instituto de Investigación Sanitaria (IDIS), Santiago de Compostela, Spain.,CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, Santiago de Compostela, Spain
| | - Simon M Luckman
- Faculty of Biology, Medicine and Health, University of Manchester, AV Hill Building, Manchester, UK
| | - Manuel Tena-Sempere
- Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC)/University of Córdoba/Reina Sofia University Hospital, Edificio IMIBIC, Avda. Menéndez Pidal s/n, 14004 Córdoba, Spain.,Department of Medical Sciences, Faculty of Medicine, Ciudad Real, Spain
| | - María M Malagón
- Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC)/University of Córdoba/Reina Sofia University Hospital, Edificio IMIBIC, Avda. Menéndez Pidal s/n, 14004 Córdoba, Spain.,Department of Medical Sciences, Faculty of Medicine, Ciudad Real, Spain
| | - Rubén Nogueiras
- Department of Physiology, CIMUS, University of Santiago de Compostela-Instituto de Investigación Sanitaria (IDIS), Santiago de Compostela, Spain.,CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, Santiago de Compostela, Spain
| | - Carlos Diéguez
- Department of Physiology, CIMUS, University of Santiago de Compostela-Instituto de Investigación Sanitaria (IDIS), Santiago de Compostela, Spain.,CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, Santiago de Compostela, Spain
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49
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Effects of glucose ingestion on circulating inflammatory mediators: Influence of sex and weight excess. Clin Nutr 2017; 36:522-529. [DOI: 10.1016/j.clnu.2016.01.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Revised: 12/19/2015] [Accepted: 01/24/2016] [Indexed: 12/11/2022]
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