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Chunchai T, Chinchapo T, Sripetchwandee J, Thonusin C, Chattipakorn N, Chattipakorn SC. Lipopolysaccharide exacerbates depressive-like behaviors in obese rats through complement C1q-mediated synaptic elimination by microglia. Acta Physiol (Oxf) 2024; 240:e14130. [PMID: 38462756 DOI: 10.1111/apha.14130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 02/05/2024] [Accepted: 02/28/2024] [Indexed: 03/12/2024]
Abstract
AIM Prolonged high-fat diet (HFD) consumption has been shown to impair cognition and depression. The combined effects of HFD and lipopolysaccharide (LPS) administration on those outcomes have never been thoroughly investigated. This study investigated the effects of LPS, HFD consumption, and a combination of both conditions on microglial dysfunction, microglial morphological alterations, synaptic loss, cognitive dysfunction, and depressive-like behaviors. METHODS Sixty-four male Wistar rats were fed either a normal diet (ND) or HFD for 12 weeks, followed by single dose-subcutaneous injection of either vehicle or LPS. Then, cognitive function and depressive-like behaviors were assessed. Then, rats were euthanized, and the whole brain, hippocampus, and spleen were collected for further investigation, including western blot analysis, qRT-PCR, immunofluorescence staining, and brain metabolome determination. RESULTS HFD-fed rats developed obese characteristics. Both HFD-fed rats with vehicle and ND-fed rats with LPS increased cholesterol and serum LPS levels, which were exacerbated in HFD-fed rats with LPS. HFD consumption, but not LPS injection, caused oxidative stress, blood-brain barrier disruption, and decreased neurogenesis. Both HFD and LPS administration triggered an increase in inflammatory genes on microglia and astrocytes, increased c1q colocalization with microglia, and increased dendritic spine loss, which were exacerbated in the combined conditions. Both HFD and LPS altered neurotransmitters and disrupted brain metabolism. Interestingly, HFD consumption, but not LPS, induced cognitive decline, whereas both conditions individually induced depressive-like behaviors, which were exacerbated in the combined conditions. CONCLUSIONS Our findings suggest that LPS aggravates metabolic disturbances, neuroinflammation, microglial synaptic engulfment, and depressive-like behaviors in obese rats.
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Affiliation(s)
- Titikorn Chunchai
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
| | - Thirathada Chinchapo
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
- Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Jirapas Sripetchwandee
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
- Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Chanisa Thonusin
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
- Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Nipon Chattipakorn
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
- Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Siriporn C Chattipakorn
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
- Department of Oral Biology and Diagnostic Sciences, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand
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Lopez J, Al-Nakkash L, Broderick TL, Castro M, Tobin B, Plochocki JH. Genistein Suppresses IL-6 and MMP-13 to Attenuate Osteoarthritis in Obese Diabetic Mice. Metabolites 2023; 13:1014. [PMID: 37755294 PMCID: PMC10534591 DOI: 10.3390/metabo13091014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 09/07/2023] [Accepted: 09/12/2023] [Indexed: 09/28/2023] Open
Abstract
Type 2 diabetes mellitus and osteoarthritis (OA) often present as comorbidities. We examined the role of plasma IL-6, chondrocyte MMP-13, and col10a expression in the development of OA in obese diabetic mice. We further investigated dietary genistein and exercise training as potential mitigators of OA. One hundred adult mice (50 females, 50 males) aged 6 weeks were randomized into 5 groups, including lean controls, obese diabetic controls, and obese diabetic mice treated with genistein, exercise training, and genistein plus exercise training. The obese diabetic state was induced by feeding the mice a high-fat, high-sugar diet. Genistein was incorporated into the diet at a concentration of 600 mg genistein/kg. Exercise training was performed on a treadmill and consisted of daily 30 min sessions at 12 m/min, 5 days/week for a 12-week period. After treatment, plasma was collected, and proximal tibias were removed for analysis. Plasma IL-6 and MMP-13 were elevated while col10a was reduced in obese diabetic mice in comparison to lean controls. Dietary genistein treatment reduced IL-6 and MMP-13 expression and increased col10a expression. Histological examination of articular cartilage showed reduced thickness of the uncalcified zones and proteoglycan content in the cartilage of diabetic mice in comparison to mice fed genistein. Exercise training had no significant effect. In conclusion, genistein (and not exercise training) attenuates OA by reducing IL-6 and MMP-13 expression in diabetic mice.
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Affiliation(s)
- Janelle Lopez
- Arizona College of Osteopathic Medicine, Midwestern University, Glendale, AZ 85308, USA
| | - Layla Al-Nakkash
- Department of Physiology, College of Graduate Studies, Midwestern University, Glendale, AZ 85308, USA;
| | - Tom L. Broderick
- Laboratory of Diabetes and Exercise Metabolism, Department of Physiology, College of Graduate Studies, Midwestern University, Glendale, AZ 85308, USA;
| | - Monica Castro
- Department of Anatomy, College of Graduate Studies, Midwestern University, Glendale, AZ 85308, USA
| | - Brielle Tobin
- Arizona College of Osteopathic Medicine, Midwestern University, Glendale, AZ 85308, USA
| | - Jeffrey H. Plochocki
- Department of Anatomy, College of Graduate Studies, Midwestern University, Glendale, AZ 85308, USA
- College of Medicine, University of Central Florida, Orlando, FL 32827, USA
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Chan CW, Lin BF. Folate Deficiency Enhanced Inflammation and Exacerbated Renal Fibrosis in High-Fat High-Fructose Diet-Fed Mice. Nutrients 2023; 15:3616. [PMID: 37630806 PMCID: PMC10458828 DOI: 10.3390/nu15163616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 08/15/2023] [Accepted: 08/16/2023] [Indexed: 08/27/2023] Open
Abstract
The prevalence of obesity and chronic kidney disease (CKD) is increasing simultaneously and rapidly worldwide. Our previous study showed that folate deficiency increased lipid accumulation and leptin production of adipocytes. Whether folate plays a role in CKD, particularly obesity-related nephropathy remains unclear. To investigate the effects of folate deficiency on CKD in diet-induced obese mice, four groups of male C57BL/6 mice were fed either a normal-fat diet (NF) with folate (NF+f); NF without folate (NF-f); high-fat high-fructose diet (HFF) with folate (HFF+f); or HFF without folate (HFF-f) for 12 months during the study. The results showed that HFF increased not only body weight, fasting blood glucose, total cholesterol (TC), low-density lipoprotein (LDL)-cholesterol, and blood pressure, but also cytokines levels, such as interleukin (IL)-2, interferon (IFN)-γ, IL-17A/F, IL-6, monocyte chemoattractant protein (MCP)-1, and transforming growth factor (TGF)-β1. The indicators of kidney failure including urinary protein, neutrophil gelatinase-associated lipocalin (NGAL), renal type I and IV collagen deposits and leptin content, and serum creatinine were also increased by HFF. Folate-deficient diets further elevated serum TC, LDL-cholesterol, IL-6, tumor necrosis factor (TNF)-α, MCP-1, TGF-β1, and leptin, but decreased IL-10 level, and thus exacerbated renal fibrosis. To investigate the possible mechanisms of folate deficiency on renal injury, phosphorylation of pro-fibrosis signaling molecules, including signal transducer and activator of transcription (STAT)3 and small mothers against decapentaplegic (Smad)2/3, were assayed. Both HFF and folate deficiency significantly increased the phosphorylation of STAT3 and Smad2/3, suggesting synergistic effects of HFF-f on chronic renal inflammation and fibrosis. In conclusion, the results demonstrated that folate deficiency might aggravate inflammatory status and enhance renal fibrosis.
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Affiliation(s)
| | - Bi-Fong Lin
- Department of Biochemical Science and Technology, College of Life Science, National Taiwan University, Taipei 10617, Taiwan;
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Yang L, Zhao M, Liu M, Zhang W, Zhi S, Qu L, Xiong J, Wang L, Qin C, Nie G. Effects of Genistein on Lipid Metabolism, Antioxidant Activity, and Immunity of Common Carp ( Cyprinus carpio L.) Fed with High-Carbohydrate and High-Fat Diets. AQUACULTURE NUTRITION 2023; 2023:9555855. [PMID: 37034827 PMCID: PMC10081910 DOI: 10.1155/2023/9555855] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 11/19/2022] [Accepted: 12/05/2022] [Indexed: 06/03/2023]
Abstract
A 56-day feeding trial was conducted to investigate the effects of genistein on growth, lipid metabolism, antioxidant capacity, and immunity of common carp fed with high-carbohydrate or high-fat diets. Five diets were used to feed fish: control diet (5% fat; CO), high-fat diet (11% fat; HF), high-carbohydrate diet (45% carbohydrate; HC), and HF or HC diet with 500 mg/kg genistein (FG or CG). Results showed that final body weight (FW) and specific growth rate (SGR) were significantly reduced, but the supplementation with genistein resulted in higher values of FW and SGR than the HF or HC group. Both high carbohydrate and high fat belong to high-energy diets, which may promote lipid deposition. Genistein obviously decreased liver triglyceride (TG) content and alleviated hepatic fat vacuolation in the HF and HC groups. The expression of lipid metabolism genes (cpt-1 and atgl) was markedly higher in the FG group than in the HF group. The lipid synthesis-related genes (fas, acc, and pparγ) were elevated in high-energy diets but recovered to the control level or reduced after genistein treatments. With respect to fatty acid transporter genes, fatp increased in the FG group, and cd36 increased in the CG group. Furthermore, the antioxidant and immune indexes, such as total antioxidant capacity (T-AOC), glutathione peroxidase (GSH-PX), superoxide dismutase (SOD), acid phosphatase (ACP), and lysozyme (LZM) activities, were decreased, while malonate aldehyde (MDA) content, activities of alanine aminotransferase (ALT), and aspartate aminotransferase (AST) were enhanced in the HF and HC groups. The antioxidant and immunity values could be ameliorated by treatment with genistein. Moreover, the transcript levels of antioxidant-related genes (cat, gr, and nrf2) in the liver and anti-inflammatory factors (tgf-β and il-10) and lyz in the head kidney tissue were promoted, although the expression levels of proinflammatory factors (tnf-α and il-6) declined in the genistein supplementation group, which confirmed the antioxidant and immune-enhancing effects of genistein. Therefore, 500 mg/kg genistein could ameliorate the negative effects of high-energy diets on immunity.
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Affiliation(s)
- Liping Yang
- College of Fisheries, Henan Normal University, No. 46 Jianshe Road, Xinxiang 453007, China
| | - Mengjuan Zhao
- College of Fisheries, Henan Normal University, No. 46 Jianshe Road, Xinxiang 453007, China
| | - Mingyu Liu
- College of Fisheries, Henan Normal University, No. 46 Jianshe Road, Xinxiang 453007, China
| | - Wenlei Zhang
- College of Fisheries, Henan Normal University, No. 46 Jianshe Road, Xinxiang 453007, China
| | - Shaoyang Zhi
- College of Fisheries, Henan Normal University, No. 46 Jianshe Road, Xinxiang 453007, China
| | - Leya Qu
- College of Fisheries, Henan Normal University, No. 46 Jianshe Road, Xinxiang 453007, China
| | - Jinrui Xiong
- College of Fisheries, Henan Normal University, No. 46 Jianshe Road, Xinxiang 453007, China
| | - Luming Wang
- College of Fisheries, Henan Normal University, No. 46 Jianshe Road, Xinxiang 453007, China
| | - Chaobin Qin
- College of Fisheries, Henan Normal University, No. 46 Jianshe Road, Xinxiang 453007, China
| | - Guoxing Nie
- College of Fisheries, Henan Normal University, No. 46 Jianshe Road, Xinxiang 453007, China
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Somi Sankaran P, Cui Y. High-fat-diet induced obesity and diabetes mellitus in Th1 and Th2 biased mice strains: A brief overview and hypothesis. Chronic Dis Transl Med 2023; 9:14-19. [PMID: 36926255 PMCID: PMC10011668 DOI: 10.1002/cdt3.57] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 12/02/2022] [Accepted: 12/28/2022] [Indexed: 02/11/2023] Open
Abstract
Obesity and diabetes mellitus are common metabolic diseases prevalent worldwide. Mice are commonly used to study the pathogenesis of these two conditions. Obesity and diabetes mellitus are induced by administering a high-fat diet in many studies although other diet-induced models are also used. Several factors may influence the outcome of the studies done to study diet-induced obesity in mice. The immune system plays a crucial role in the susceptibility of mice to develop obesity and metabolic disease. In this article, the reasons for differences in susceptibility to develop obesity and diabetes mellitus in mice in response to high-fat-diet feeding and the influence of immunological bias of the mice strain used in studies are evaluated. Mice strains that induce proinflammatory and Th1-type immune responses are found to be susceptible to high-fat-diet-induced obesity. A few studies which directly compared the effect of a high-fat diet on obesity and diabetic phenotype in Th1- and Th2-biased mice strains were briefly analyzed. Based on the observations, it is proposed that the liver and adipose tissue may respond differently to high-fat-diet feeding regimens in Th1- and Th2-biased mice strains. For instance, in Th1-biased mice, adipose tissue fat content was high both in the baseline as well as in response to a high-fat diet whereas in the liver, it was found to be less. It can be inferred that the immune responses to diet-induced models may provide insights into the pathogenesis of obesity and diabetes mellitus.
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Sutradhar S, Deb A, Singh SS. Protective efficacy of melatonin and insulin against LPS caused toxicity in diabetic mice. Immunopharmacol Immunotoxicol 2022; 44:902-914. [PMID: 35736957 DOI: 10.1080/08923973.2022.2093739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Context: Deregulated glucose homeostasis leads to a life-threatening metabolic disorder known as diabetes. The insulin deficiency and hyperglycaemic condition related to diabetes cause dysregulation of the immune system.Objective: This study evaluated the combined efficacy of melatonin and insulin in attenuation of lipopolysaccharide (LPS) caused inflammation, macrophage functional impairment, and oxidative stress in the spleen of diabetic mice.Materials and Methods: Multiple low doses of streptozotocin (50mg/kg B. wt.) were administered intraperitoneally to induce diabetes. Diabetes mice were divided into two sets. Set-1 contained control, diabetes, diabetes insulin (2IU/100g B.wt.) treated, diabetes melatonin (100µg/100g. B.wt.) treated, and diabetes melatonin and insulin treated groups of mice. In set II, the same number of groups as those of set I were given a single dose of LPS (50µg/mice) 24 hours before euthanization.Results and Discussion: LPS caused a significant increase in oxidative stress, circulatory proinflammatory cytokines, significant suppression of antioxidant defense system, and phagocytic index in diabetic mice. Melatonin and insulin significantly improved the adverse effects caused by LPS treatment in diabetic mice. The present study noted that combined treatment of melatonin and insulin was more effective in attenuating LPS-induced devastating effects in laboratory mice.Conclusions: The present study may suggest a combinatorial approach in the therapeutic use of melatonin and insulin to improve such devastating conditions.
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Affiliation(s)
- Sangita Sutradhar
- Molecular Endocrine Research Lab., Department of Zoology, Tripura University, Suryamaninagar, India
| | - Anindita Deb
- Molecular Endocrine Research Lab., Department of Zoology, Tripura University, Suryamaninagar, India
| | - Shiv Shankar Singh
- Molecular Endocrine Research Lab., Department of Zoology, Tripura University, Suryamaninagar, India
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Ella K, Sűdy ÁR, Búr Z, Koós B, Kisiczki ÁS, Mócsai A, Káldi K. Time restricted feeding modifies leukocyte responsiveness and improves inflammation outcome. Front Immunol 2022; 13:924541. [PMID: 36405720 PMCID: PMC9666763 DOI: 10.3389/fimmu.2022.924541] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 09/30/2022] [Indexed: 11/05/2022] Open
Abstract
Time restricted eating, the dietary approach limiting food intake to a maximal 10-hour period of daytime is considered beneficial in metabolic dysfunctions, such as obesity and diabetes. Rhythm of food intake and parallel changes in serum nutrient levels are also important entrainment signals for the circadian clock, particularly in tissues involved in metabolic regulation. As both the metabolic state and the circadian clock have large impact on immune functions, we investigated in mice whether time restricted feeding (TRF) affects systemic inflammatory potential. TRF slackened the symptoms in K/BxN serum-transfer arthritis, an experimental model of human autoimmune joint inflammation. Compared to ad libitum conditions TRF reduced the expression of inflammatory mediators in visceral adipose tissue, an integrator and coordinator of metabolic and inflammatory processes. Furthermore, TRF strengthened the oscillation of peripheral leukocyte counts and alongside decreased the pool of both marginated and tissue leukocytes. Our data suggest that the altered leukocyte distribution in TRF mice is related to the attenuated expression of adhesion molecules on the surface of neutrophils and monocytes. We propose that TRF modifies both rhythm and inflammatory potential of leukocytes which contribute to the milder reactivity of the immune system and therefore time-restricted eating could serve as an effective complementary tool in the therapy of autoinflammatory processes.
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Bradey AL, Fitter S, Duggan J, Wilczek V, Williams CMD, Cheney EA, Noll JE, Tangseefa P, Panagopoulos V, Zannettino ACW. Calorie restriction has no effect on bone marrow tumour burden in a Vk*MYC transplant model of multiple myeloma. Sci Rep 2022; 12:13128. [PMID: 35908046 PMCID: PMC9338941 DOI: 10.1038/s41598-022-17403-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 07/25/2022] [Indexed: 12/05/2022] Open
Abstract
Multiple myeloma (MM) is an incurable haematological malignancy, caused by the uncontrolled proliferation of plasma cells within the bone marrow (BM). Obesity is a known risk factor for MM, however, few studies have investigated the potential of dietary intervention to prevent MM progression. Calorie restriction (CR) is associated with many health benefits including reduced cancer incidence and progression. To investigate if CR could reduce MM progression, dietary regimes [30% CR, normal chow diet (NCD), or high fat diet (HFD)] were initiated in C57BL/6J mice. Diet-induced changes were assessed, followed by inoculation of mice with Vk*MYC MM cells (Vk14451-GFP) at 16 weeks of age. Tumour progression was monitored by serum paraprotein, and at endpoint, BM and splenic tumour burden was analysed by flow cytometry. 30% CR promoted weight loss, improved glucose tolerance, increased BM adiposity and elevated serum adiponectin compared to NCD-fed mice. Despite these metabolic changes, CR had no significant effect on serum paraprotein levels. Furthermore, endpoint analysis found that dietary changes were insufficient to affect BM tumour burden, however, HFD resulted in an average two-fold increase in splenic tumour burden. Overall, these findings suggest diet-induced BM changes may not be key drivers of MM progression in the Vk14451-GFP transplant model of myeloma.
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Affiliation(s)
- Alanah L Bradey
- Myeloma Research Laboratory, Faculty of Health and Medical Sciences, School of Biomedicine, University of Adelaide, Adelaide, Australia.,Precision Cancer Medicine Theme, Solid Tumour Program, South Australian Health and Medical Research Institute, Adelaide, Australia
| | - Stephen Fitter
- Myeloma Research Laboratory, Faculty of Health and Medical Sciences, School of Biomedicine, University of Adelaide, Adelaide, Australia.,Precision Cancer Medicine Theme, Solid Tumour Program, South Australian Health and Medical Research Institute, Adelaide, Australia
| | - Jvaughn Duggan
- Myeloma Research Laboratory, Faculty of Health and Medical Sciences, School of Biomedicine, University of Adelaide, Adelaide, Australia.,Precision Cancer Medicine Theme, Solid Tumour Program, South Australian Health and Medical Research Institute, Adelaide, Australia
| | - Vicki Wilczek
- Myeloma Research Laboratory, Faculty of Health and Medical Sciences, School of Biomedicine, University of Adelaide, Adelaide, Australia.,Precision Cancer Medicine Theme, Solid Tumour Program, South Australian Health and Medical Research Institute, Adelaide, Australia
| | - Connor M D Williams
- Myeloma Research Laboratory, Faculty of Health and Medical Sciences, School of Biomedicine, University of Adelaide, Adelaide, Australia.,Precision Cancer Medicine Theme, Solid Tumour Program, South Australian Health and Medical Research Institute, Adelaide, Australia
| | - Emma Aj Cheney
- Myeloma Research Laboratory, Faculty of Health and Medical Sciences, School of Biomedicine, University of Adelaide, Adelaide, Australia.,Precision Cancer Medicine Theme, Solid Tumour Program, South Australian Health and Medical Research Institute, Adelaide, Australia
| | - Jacqueline E Noll
- Myeloma Research Laboratory, Faculty of Health and Medical Sciences, School of Biomedicine, University of Adelaide, Adelaide, Australia.,Precision Cancer Medicine Theme, Solid Tumour Program, South Australian Health and Medical Research Institute, Adelaide, Australia
| | - Pawanrat Tangseefa
- Myeloma Research Laboratory, Faculty of Health and Medical Sciences, School of Biomedicine, University of Adelaide, Adelaide, Australia.,Precision Cancer Medicine Theme, Solid Tumour Program, South Australian Health and Medical Research Institute, Adelaide, Australia
| | - Vasilios Panagopoulos
- Myeloma Research Laboratory, Faculty of Health and Medical Sciences, School of Biomedicine, University of Adelaide, Adelaide, Australia. .,Precision Cancer Medicine Theme, Solid Tumour Program, South Australian Health and Medical Research Institute, Adelaide, Australia.
| | - Andrew C W Zannettino
- Myeloma Research Laboratory, Faculty of Health and Medical Sciences, School of Biomedicine, University of Adelaide, Adelaide, Australia.,Precision Cancer Medicine Theme, Solid Tumour Program, South Australian Health and Medical Research Institute, Adelaide, Australia.,Department of Haematology, Royal Adelaide Hospital, Adelaide, Australia.,Central Adelaide Local Health Network, Adelaide, Australia
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Jain R, Bolch C, Al-Nakkash L, Sweazea KL. Systematic Review of the Impact of Genistein on Diabetes Related Outcomes. Am J Physiol Regul Integr Comp Physiol 2022; 323:R279-R288. [PMID: 35816719 DOI: 10.1152/ajpregu.00236.2021] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Diabetes is the 8th leading cause of death in the world and the prevalence is rising in low-income countries. Cardiovascular diseases are the leading cause of death worldwide, especially for individuals with diabetes. While medications exist to treat symptoms of diabetes, lack of availability and high costs may deter their use by individuals with low incomes as well as those in low-income nations. Therefore, this systematic review was performed to determine whether genistein, a phytoestrogen found in soy products, could provide therapeutic benefits for individuals with diabetes. We searched PubMed and SCOPUS using the terms 'genistein', 'diabetes', and 'glucose' and identified 33 peer-reviewed articles that met our inclusion criteria. In general, preclinical studies demonstrated that genistein decreases body weight and circulating glucose and triglycerides concentrations while increasing insulin levels and insulin sensitivity. Genistein also delayed the onset of type 1 and type 2 diabetes. In contrast, clinical studies utilizing genistein generally reported no significant relationship between genistein and body mass, circulating glucose, A1C concentrations, or onset of type 1 diabetes. However, genistein was found to improve insulin sensitivity and serum triglyceride concentrations and delayed the onset of type 2 diabetes. In summary, preclinical and clinical studies suggest that genistein may help delay the onset of type 2 diabetes and improve several symptoms associated with the disease. Although additional research is required to confirm these findings, the results highlighted in this review provide some evidence that genistein may offer a natural approach to mitigating some of the complications associated with diabetes.
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Affiliation(s)
- Rijul Jain
- School of Life Sciences, Arizona State University, Tempe, AZ, United States
| | - Charlotte Bolch
- Office of Research and Sponsored Programs and College of Graduate Studies, Midwestern University, Glendale, Arizona, United States
| | - Layla Al-Nakkash
- Department of Physiology, College of Graduate Studies, Midwestern University, Glendale, Arizona, United States
| | - Karen L Sweazea
- College of Health Solutions, Arizona State University, Tempe, AZ, United States
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10
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Maia S, Girgis B, Nunes GF, Reis-Mendes A, Bovolini A, Duarte JA. Splenic morphologic changes induced by a strenuous and exhaustive training program in Wistar rats. J Sports Med Phys Fitness 2022; 62:873-882. [PMID: 34028237 DOI: 10.23736/s0022-4707.21.12251-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Excessively intense physical training can compromise the functionality of the immune system and contribute to the appearance of symptoms associated with overtraining syndrome (OTS). The aim of this study was to analyze the splenic morphological changes in Wistar rats submitted to demanding training. METHODS The animals were randomly assigned to 2 groups; control group (CG) and exercise group (EG), animals in the EG group were sacrificed after 1 (EG1) and 3 weeks (EG3) of training. The animals were stimulated to run on the treadmill (-20 °; from 25 m/min, with a progressive increase of 1.25 m/minute at each session; 1 hour/day) 6 days/week. Body weight, food intake, appearance of hair, behavior and ability of animals to perform the imposed work were assessed during the protocol. The spleen was collected for histological analysis and immunohistochemical identification of CD4+ T lymphocytes and CD8+ T cells and NF-kB transcription factor. RESULTS The protocol did not induce OTS, however, decreases were observed in areas of white pulp in EG3 in relation to the other groups. The training induced a decrease in splenic CD4+ T cells with an increase in CD8+ T cells. The training increased the expression of NF-κB P65 compared to sedentary animals. CONCLUSIONS Even without manifestation of OTS, strenuous physical training, alter the histological and immunological structures of the spleen, suggesting in part a compromise in the functionality of the immune system.
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Affiliation(s)
- Sara Maia
- CIAFEL, Laboratory of Biochemistry and Experimental Morphology, Faculty of Sport, University of Porto, Porto, Portugal -
| | - Beshoy Girgis
- CIAFEL, Laboratory of Biochemistry and Experimental Morphology, Faculty of Sport, University of Porto, Porto, Portugal
| | - Grace F Nunes
- CIAFEL, Laboratory of Biochemistry and Experimental Morphology, Faculty of Sport, University of Porto, Porto, Portugal
| | - Ana Reis-Mendes
- UCIBIO, REQUIMTE Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal
| | - Antonio Bovolini
- CIAFEL, Laboratory of Biochemistry and Experimental Morphology, Faculty of Sport, University of Porto, Porto, Portugal
| | - José A Duarte
- CIAFEL, Laboratory of Biochemistry and Experimental Morphology, Faculty of Sport, University of Porto, Porto, Portugal
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11
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Effects of Genistein and Exercise Training on Brain Damage Induced by a High-Fat High-Sucrose Diet in Female C57BL/6 Mice. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:1560435. [PMID: 35620577 PMCID: PMC9129997 DOI: 10.1155/2022/1560435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 01/27/2022] [Accepted: 03/28/2022] [Indexed: 11/26/2022]
Abstract
In recent decades, a shift in the nutritional landscape to the Western-style diet has led to an unprecedented rise in the prevalence of obesity and neurodegenerative diseases. Consumption of a healthy diet and engaging in regular physical activity represents safe and affordable approaches known to mitigate the adverse consequences of the Western diet. We examined whether genistein treatment, exercise training, and a combination treatment (genistein and exercise training) mitigated the effects of a Western diet-induced by high-fat, high-sugar (HFHS) in brain of female mice. HFHS increased the amyloid-beta (Aβ) load and phosphorylation of tau, apoptosis, and decreased brain-derived neurotrophic factor (BDNF) levels. Exercise training and genistein each afforded modest protection on Aβ accumulation and apoptosis, and both increased BDNF. The greatest neuroprotective effect occurred with combination treatment. BDNF and all markers of Aβ accumulation, phosphorylation of tau, and apoptosis were improved with combined treatment. In a separate series of experiments, PC12 cells were exposed to high glucose (HG) and palmitate (PA) to determine cell viability with genistein as well as in the presence of tamoxifen, an estrogen receptor antagonist, to assess a mechanism of action of genistein on cell apoptosis. Genistein prevented the neurotoxic effects of HG and PA in PC12 cells and tamoxifen blocked the beneficial effects of genistein on apoptosis. Our results indicate the beneficial effects of genistein and exercise training on HFHS-induced brain damage. The benefits of genistein may occur via estrogen receptor-mediated pathways.
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Trehalose Activates Hepatic and Myocardial Autophagy and Has Anti-Inflammatory Effects in db/db Diabetic Mice. Life (Basel) 2022; 12:life12030442. [PMID: 35330193 PMCID: PMC8950581 DOI: 10.3390/life12030442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 03/13/2022] [Indexed: 11/17/2022] Open
Abstract
Db/db mice (carrying a mutation in the gene encoding leptin receptor) show autophagy suppression. Our aim was to evaluate the effect of autophagy inducer trehalose on liver and heart autophagy in db/db mice and to study inflammation dysregulation and the suitability of chitinases’ expression levels as diabetes markers. Thirty-eight male db/db mice and C57/BL mice (control) were used. The db/db model manifested inflammation symptoms: overexpression of TNF-α in the spleen and underexpression of IL-10 in the liver and spleen (cytokine imbalance). Simultaneously, we revealed decreased expression of chitotriosidase (CHIT1) and acid mammalian chitinase (CHIA) in the liver of db/db mice. CHIA expression in db/db mice is significantly lower only in the spleen. Trehalose treatment significantly reduced blood glucose concentration and glycated hemoglobin. Treatment of db/db mice by trehalose was followed by increased autophagy induction in the heart and liver (increased autolysosomes volume density studied by morphometric electron-microscopic method). Trehalose exerted beneficial cardiac effects possibly via increased lipophagy (uptake of lipid droplets). The autophagy activation by trehalose had several positive effects on the heart and liver of db/db mice; therefore, lipophagy activation seems to be a promising therapy for diabetes.
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Kalmukova O, Shemetova H, Skrypnyk N, Savchuk O, Dzerzhynsky M. MELATONIN IMPROVES SPLEEN HISTOPHYSIOLOGY OF RATS WITH DIET-INDUCED OBESITY: CHRONOTHERAPY APPROACH. BULLETIN OF TARAS SHEVCHENKO NATIONAL UNIVERSITY OF KYIV. SERIES: BIOLOGY 2022. [DOI: 10.17721/1728.2748.2022.90.34-39] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
One of the most commoncharacteristics of obesity is the development of a systemic low-grade proinflammatory state in the entire body, including the immune organs. Spleen enlargement during diet-induced obesity contributes to the development of chronic inflammation. Melatonin due to immunomodulatory, antioxidant, and systemic metabolic rolesis proposed to be an effective candidate for anti-obesity therapy. As immune systems demonstrate pronounced circadian rhythmicity and immune cells have different types of melatonin receptors, a chronotherapeutic approach might be used to choose the most effective regimes of melatonin administration for the correction of obesity-provoked damage to the spleen. Thus, the main goal of our research was the analysis of the rats' spleen histophysiology during the development of high-calorie diet-inducedobesity (HCD) after administering melatonin daily at different times (morning or evening). Melatonin was administered by gavage for 7 weeks in the dose of 30 mg/kg 1 h before lights-off (HCD ZT11, M ZT11, evening), or 1 h after lights-on (HCD ZT01, M ZT01, morning). For assessment of the morpho-functional state of the spleen,the histopathological evaluation of red and white pulp in different zones of lymphoid follicles was implemented. It was observed that obesity development wasaccompaniedbyhyperemia and vessel dilatation in the red pulp; while in the white pulp notable deformation of germinal centers and destroyed borders between zones of lymphoid follicles were noticed.The HCD group demonstrated a decrease inthe relative amount of the white pulp, the crosssectional area of germinal centers, and the cross-sectional area of the marginal zone; whilethe increased relative amount of red pulp and marginal zone/germinal centers ratiowere detected compared with control. Melatonin administration to obese rats increases the relative amount of the white pulp (HCD ZT11 group), the cross-sectional area of germinal centers (HCD ZT01 and HCD ZT11 groups), and the cross-sectional area of the marginal zone (HCD ZT11 group), and decreasesmarginal zone/germinal centers ratio (HCD ZT01 group) in comparison with the HCD group.Also,it was demonstrated that a choice between the morning or evening regimes of the melatonin treatment did not affect the histophysiology of the spleen in rats receivingthe standard diet (M ZT01 and M ZT11 groups). These results indicate that melatonin can be considered to be a powerful potential therapeutic agent for the amelioration of obesity-induced changes in the spleen.
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Sexual Dimorphism in Changes That Occur in Tissues, Organs and Plasma during the Early Stages of Obesity Development. BIOLOGY 2021; 10:biology10080717. [PMID: 34439950 PMCID: PMC8389333 DOI: 10.3390/biology10080717] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 07/07/2021] [Accepted: 07/15/2021] [Indexed: 02/06/2023]
Abstract
Simple Summary Obesity is a global health concern with numerous associated comorbidities. This study aims to provide a qualitative assessment of changes that may occur in tissues, organs, and plasma during the early stages of obesity development and how it may differ between male and female using a mouse model of diet induced obesity. Notable changes, not previously reported, were observed in the lungs, liver, kidney, spleen, and heart, which may suggest early signs of developing an obesity associated comorbidity. Leptin levels with notable sexual dimorphisms changes significantly in early obesity and was observed to also correlate with insulin levels. Interestingly, males and females showed different inflammatory cytokine profiles with females exhibiting a more anti-inflammatory cytokine profile, notably the IL-6/IL-10 axis of cytokine regulation may account for their significantly lower weight gain compared to males. Thus, this study provides valuable information which may aid in understanding the development of some obesity associated diseases at the early stages and could assist in developing effective intervention strategies in males and females. Abstract Despite obesity being a major health concern, information on the early clinical changes that occur in plasma and tissues during obesity development and the influence of sexual dimorphism is lacking. This study investigated changes in tissue and organ histology, macrophage infiltration, plasma hormones, lipid, and chemokine and cytokine levels in mice fed on a high fat diet for 11-weeks. An increase in adiposity, accompanied by adipocyte hypertrophy and macrophage infiltration, was observed to be significantly greater in males than females. Important changes in cell morphology and histology were noted in the lungs, liver, kidney, spleen, and heart, which may indicate early signs for developing obesity associated comorbidities. Leptin, but not adiponectin, was significantly altered during weight gain. Additionally, leptin, but not adiposity, correlated with insulin levels. Interestingly, GM-CSF, TNFα, and IL-12 (p70) were not produced in the early stages of obesity development. Meanwhile, the production of MCP-1, IP-10, RANTES, IL-10, IL-6, KC, and IL-9 were greatly influenced by sexual dimorphism. Importantly, IL-6/IL-10 axis of anti-inflammatory cytokine regulation was observed only in females and may account for their significantly lower weight gain compared to males. This study provides new knowledge on how sexual dimorphism may influence the development of obesity and associated comorbidities.
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Abstract
Introduction: NAFLD is often under-diagnosed, even though rates of its co-morbidities such as obesity and type2 diabetes mellitus, prominent statuses of inflammation, are significantly high. The spleen-liver axis is gaining much credit in the last years like other well-known organ axes.Areas covered: PubMed/MEDLINE was searched for relevant articles related to concomitant occurrence of NAFLD and spleen. Areas covered in this review include: (1) updated findings of spleen dimensions at ultrasonography, (2) discussion of current data on pathophysiological connections between obesity-related NAFLD and increased volume of the spleen, and (3) analysis of current immune-mediated mechanisms characterizing the so.called chronic low-grade inflammation leading to insulin resistance.Expert opinion: The advances in explaining mechanisms underlying the spleen involvement in immune regulation, coupled with research about the role of spleen in NAFLD, could impact real world outcomes through establishing better tools for a precocious diagnosis. Using both liver and spleen ultrasonography, technique largely dealt with in this review, could expand the possibility to cover an adequate diagnostic path toward NAFLD, reaching a good sensibility and specificity.
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Affiliation(s)
- Giovanni Tarantino
- Department of Clinical Medicine and Surgery, Federico II University Medical School of Naples, Naples, Italy
| | - Vincenzo Citro
- Department of General Medicine, "Umberto I" Hospital, Nocera Inferiore (SA), Nocera Inferiore, Italy
| | - Clara Balsano
- Department of Clinical Medicine, Life, Health & Environmental Sciences-MESVA, University of L'Aquila, L'Aquila, Italy
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Jansson A, Gunnarsson VÞ, Ringmark S, Ragnarsson S, Söderroos D, Ásgeirsson E, Jóhannsdóttir TR, Liedberg C, Stefánsdóttir GJ. Increased body fat content in horses alters metabolic and physiological exercise response, decreases performance, and increases locomotion asymmetry. Physiol Rep 2021; 9:e14824. [PMID: 34110691 PMCID: PMC8191395 DOI: 10.14814/phy2.14824] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 03/04/2021] [Accepted: 03/05/2021] [Indexed: 11/24/2022] Open
Abstract
This study examined the effect of altered body weight (BW) and body fat content on exercise performance and recovery. Nine horses were divided into two groups, and changes in BW and fat content were induced by feeding a high (HA) or restricted (RA) energy allowance for 36 days in a cross-over design. In the last week of each treatment, BW and body condition score (BCS) were recorded, body fat percentage was estimated using ultrasound, and a standardized incremental treadmill exercise test (SET) and competition-like field test were performed (scored by judges blinded to treatments). Blood samples were collected, and heart rate (HR), rectal temperature (RT), and respiratory rate (RR) were also recorded. Objective locomotion analyses were performed before and after the field test. Body weight, body fat percentage, and BCS were higher (5-8%) in HA than in RA horses (p < 0.05). In SET, HA horses showed higher HR, plasma lactate concentration, RR, and RT than RA horses (p < 0.05), and lower VLa4 , hematocrit (Hct), plasma glucose, and plasma NEFA concentrations (p < 0.05). Hct was also lower in HA horses in the field test, while RA horses showed higher scores (p < 0.05). After both tests, resting plasma lactate concentrations were reached faster in RA than in HA horses (p < 0.05). Objective locomotion asymmetry was higher in HA than in RA (p < 0.05). These results clearly show that increased BW and body fat content in horses lower physiological fitness in terms of VLa4 , plasma lactate removal, Hct levels, plasma glucose availability and reduce true performance evaluated by blinded judges.
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Affiliation(s)
- Anna Jansson
- Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | | | - Sara Ringmark
- Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Sveinn Ragnarsson
- Department of Equine Science, Hólar University, Sauðárkrókur, Iceland
| | - Denise Söderroos
- Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden.,Department of Equine Science, Hólar University, Sauðárkrókur, Iceland
| | - Einar Ásgeirsson
- Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Tanja R Jóhannsdóttir
- Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Charlotta Liedberg
- Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden
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Won G, Choi SI, Kang CH, Kim GH. Lactiplantibacillus plantarum MG4296 and Lacticaseibacillus paracasei MG5012 Ameliorates Insulin Resistance in Palmitic Acid-Induced HepG2 Cells and High Fat Diet-Induced Mice. Microorganisms 2021; 9:1139. [PMID: 34070604 PMCID: PMC8228052 DOI: 10.3390/microorganisms9061139] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 05/21/2021] [Accepted: 05/21/2021] [Indexed: 12/30/2022] Open
Abstract
The purpose of this study was to evaluate the capacity of Lactiplantibacillus plantarum MG4296 (MG4296) and Lacticaseibacillus paracasei MG5012 (MG5012) on insulin resistance (IR) and diabetes-related metabolic changes in palmitic acid (PA)-induced HepG2 cells and high-fat diet-induced mice. In vitro, cell-free extracts of MG4296 and MG5012 alleviated IR by increasing glucose uptake and glycogen content in PA-induced insulin-resistant HepG2 cells. In vivo, MG4296 and MG5012 supplementation markedly decreased body weight and glucose tolerance. Administration of both strains also improved serum glucose, glycated hemoglobin, insulin, triglyceride, LDL/HDL ratio, and homeostatic model assessment of IR (HOMA-IR). Histopathological analysis of liver tissue demonstrated a significant reduction in lipid accumulation and glycogen content. Moreover, MG4296 and MG5012 treatment enhanced phosphoinositide-3 kinase (PI3K)/protein kinase B (Akt) expression in the liver. Overall, MG4296 and MG5012 could prevent HFD-induced glucose tolerance and hyperglycemia by improving IR. Therefore, L. plantarum MG4296 and L. paracasei MG5012 could be useful as new probiotics candidates to improve T2DM.
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Affiliation(s)
- Gayeong Won
- Department of Health Functional New Materials, Duksung Women’s University, Seoul 01369, Korea;
| | - Soo-Im Choi
- Department of Health Functional New Materials, Duksung Women’s University, Seoul 01369, Korea;
| | | | - Gun-Hee Kim
- Department of Food and Nutrition, Duksung Women’s University, Seoul 01369, Korea
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18
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Nychyk O, Barton W, Rudolf AM, Boscaini S, Walsh A, Bastiaanssen TFS, Giblin L, Cormican P, Chen L, Piotrowicz Y, Derous D, Fanning Á, Yin X, Grant J, Melgar S, Brennan L, Mitchell SE, Cryan JF, Wang J, Cotter PD, Speakman JR, Nilaweera KN. Protein quality and quantity influence the effect of dietary fat on weight gain and tissue partitioning via host-microbiota changes. Cell Rep 2021; 35:109093. [PMID: 33979605 DOI: 10.1016/j.celrep.2021.109093] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 03/08/2021] [Accepted: 04/16/2021] [Indexed: 11/30/2022] Open
Abstract
We investigated how protein quantity (10%-30%) and quality (casein and whey) interact with dietary fat (20%-55%) to affect metabolic health in adult mice. Although dietary fat was the main driver of body weight gain and individual tissue weight, high (30%) casein intake accentuated and high whey intake reduced the negative metabolic aspects of high fat. Jejunum and liver transcriptomics revealed increased intestinal permeability, low-grade inflammation, altered lipid metabolism, and liver dysfunction in casein-fed but not whey-fed animals. These differential effects were accompanied by altered gut size and microbial functions related to amino acid degradation and lipid metabolism. Fecal microbiota transfer confirmed that the casein microbiota increases and the whey microbiota impedes weight gain. These data show that the effects of dietary fat on weight gain and tissue partitioning are further influenced by the quantity and quality of the associated protein, primarily via effects on the microbiota.
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Affiliation(s)
- Oleksandr Nychyk
- Food Biosciences Department, Teagasc Food Research Centre, Moorepark, Fermoy, County Cork P61 C996, Ireland
| | - Wiley Barton
- Food Biosciences Department, Teagasc Food Research Centre, Moorepark, Fermoy, County Cork P61 C996, Ireland; VistaMilk Research Centre, Teagasc, Moorepark, Fermoy, County Cork P61 C996, Ireland
| | - Agata M Rudolf
- Key State Laboratory for Molecular Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Serena Boscaini
- Food Biosciences Department, Teagasc Food Research Centre, Moorepark, Fermoy, County Cork P61 C996, Ireland; Department of Anatomy and Neuroscience, University College Cork, Cork T12 YT20, Ireland
| | - Aaron Walsh
- Food Biosciences Department, Teagasc Food Research Centre, Moorepark, Fermoy, County Cork P61 C996, Ireland
| | - Thomaz F S Bastiaanssen
- Department of Anatomy and Neuroscience, University College Cork, Cork T12 YT20, Ireland; APC Microbiome Ireland, University College Cork, Cork T12 YT20, Ireland
| | - Linda Giblin
- Food Biosciences Department, Teagasc Food Research Centre, Moorepark, Fermoy, County Cork P61 C996, Ireland; VistaMilk Research Centre, Teagasc, Moorepark, Fermoy, County Cork P61 C996, Ireland
| | - Paul Cormican
- Animal and Grassland Research and Innovation Centre, Teagasc, Grange, Dunsany, County Meath, Ireland
| | - Liang Chen
- CAS Key Laboratory for Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Yolanda Piotrowicz
- School of Biological Sciences, University of Aberdeen, Aberdeen AB24 2TZ, UK
| | - Davina Derous
- School of Biological Sciences, University of Aberdeen, Aberdeen AB24 2TZ, UK
| | - Áine Fanning
- APC Microbiome Ireland, University College Cork, Cork T12 YT20, Ireland
| | - Xiaofei Yin
- School of Agriculture and Food Science, Institute of Food and Health and Conway Institute, University College Dublin, Dublin, Ireland
| | - Jim Grant
- Teagasc Food Research Centre, Ashtown, Dublin 15, Ireland
| | - Silvia Melgar
- APC Microbiome Ireland, University College Cork, Cork T12 YT20, Ireland
| | - Lorraine Brennan
- VistaMilk Research Centre, Teagasc, Moorepark, Fermoy, County Cork P61 C996, Ireland; School of Agriculture and Food Science, Institute of Food and Health and Conway Institute, University College Dublin, Dublin, Ireland
| | - Sharon E Mitchell
- School of Biological Sciences, University of Aberdeen, Aberdeen AB24 2TZ, UK
| | - John F Cryan
- Department of Anatomy and Neuroscience, University College Cork, Cork T12 YT20, Ireland; APC Microbiome Ireland, University College Cork, Cork T12 YT20, Ireland
| | - Jun Wang
- CAS Key Laboratory for Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Paul D Cotter
- Food Biosciences Department, Teagasc Food Research Centre, Moorepark, Fermoy, County Cork P61 C996, Ireland; VistaMilk Research Centre, Teagasc, Moorepark, Fermoy, County Cork P61 C996, Ireland; APC Microbiome Ireland, University College Cork, Cork T12 YT20, Ireland
| | - John R Speakman
- Key State Laboratory for Molecular Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; School of Biological Sciences, University of Aberdeen, Aberdeen AB24 2TZ, UK; CAS Center of Excellence in Animal Evolution and Genetics, Kunming Institute of Zoology, Kunming, China; Center for Energy Metabolism and Reproduction, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong, China
| | - Kanishka N Nilaweera
- Food Biosciences Department, Teagasc Food Research Centre, Moorepark, Fermoy, County Cork P61 C996, Ireland; VistaMilk Research Centre, Teagasc, Moorepark, Fermoy, County Cork P61 C996, Ireland.
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19
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Koh YC, Lin YC, Lee PS, Lu TJ, Lin KY, Pan MH. A multi-targeting strategy to ameliorate high-fat-diet- and fructose-induced (western diet-induced) non-alcoholic fatty liver disease (NAFLD) with supplementation of a mixture of legume ethanol extracts. Food Funct 2021; 11:7545-7560. [PMID: 32815965 DOI: 10.1039/d0fo01405b] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
NAFLD (non-alcoholic fatty liver disease) is a multifactorial liver disease related to multiple causes or unhealthy conditions, including obesity and chronic inflammation. The accumulation of excess triglycerides, called steatosis, is known as a hallmark of an imbalance between the rates of hepatic fatty acid uptake/synthesis and oxidation/export. Furthermore, occurrence of NAFLD may lead to a cocktail of disease consequences caused by the altered metabolism of glucose, lipids, and lipoproteins, for instance, insulin resistance, type II diabetes, nonalcoholic steatohepatitis (NASH), liver fibrosis, and even hepatocarcinogenesis. Due to the complexity of the occurrence of NAFLD, a multi-targeting strategy is highly recommended to effectively address the issue and combat the causal loop. Ethanol extracts of legumes are popular supplements due to their richness and diversity in phytochemicals, especially isoflavones and anthocyanins. Although many of them have been reported to have efficacy in the treatment of different metabolic syndromes and obesity, there have not been many studies on them as a supplemental mixture. In this study, the alleviative effects of selected legume ethanol extracts (CrE) on high-fat-diet- and fructose-induced obesity, liver steatosis, and hyperglycemia are discussed. As revealed by the findings, CrE not only ameliorated obesity in terms of weight gained and enlargement of adipose tissue, but also significantly reduced the incidence of steatosis via phosphorylation of AMPK, resulting in inhibition of the downstream SREBP-1c/FAS pathway and an increase in an indicator of β-oxidation (carnitine palmitoyl transferase 1a, CPT1A). Furthermore, CrE dramatically alleviated inflammatory responses, including both plasma and hepatic TNF-α, IL-6, and MCP-1 levels. CrE also had attenuating effects on hyperglycemia and insulin resistance and significantly reduced the fasting glucose level, fasting insulin level, and plasma leptin, and it exhibited positive effects in the Oral glucose tolerance test (OGTT) and Homeostatic Model Assessment for Insulin Resistance (HOMA-IR). At the molecular level, CrE could activate the PI3K/Akt/Glut2 pathway, which indicated an increase in insulin sensitivity and glucose uptake. Taken together, these results suggest that ethanol extracts of legumes could be potential supplements for metabolic syndromes, and their efficacy and effectiveness might facilitate the multi-targeting strategy required to mitigate NAFLD.
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Affiliation(s)
- Yen-Chun Koh
- Institute of Food Science and Technology, National Taiwan University, Taipei 10617, Taiwan.
| | - Yen-Cheng Lin
- Institute of Food Science and Technology, National Taiwan University, Taipei 10617, Taiwan.
| | - Pei-Sheng Lee
- Institute of Food Science and Technology, National Taiwan University, Taipei 10617, Taiwan.
| | - Ting-Jang Lu
- Institute of Food Science and Technology, National Taiwan University, Taipei 10617, Taiwan.
| | - Kai-Yi Lin
- Institute of Food Science and Technology, National Taiwan University, Taipei 10617, Taiwan.
| | - Min-Hsiung Pan
- Institute of Food Science and Technology, National Taiwan University, Taipei 10617, Taiwan. and Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 40402, Taiwan and Department of Health and Nutrition Biotechnology, Asia University, Taichung 41354, Taiwan
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20
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Siqueira BS, Ceglarek VM, Gomes ECZ, Vettorazzi JF, Rentz T, Nenevê JZ, Volinski KZ, Moraes SS, Malta A, de Freitas Mathias PC, de Oliveira Emilio HR, Balbo SL, Grassiolli S. Vagotomy and Splenectomy Reduce Insulin Secretion and Interleukin-1β. Pancreas 2021; 50:607-616. [PMID: 33939676 DOI: 10.1097/mpa.0000000000001809] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
OBJECTIVES This study aimed to evaluate the effect of vagotomy, when associated with splenectomy, on adiposity and glucose homeostasis in Wistar rats. METHODS Rats were divided into 4 groups: vagotomized (VAG), splenectomized (SPL), VAG + SPL, and SHAM. Glucose tolerance tests were performed, and physical and biochemical parameters evaluated. Glucose-induced insulin secretion and protein expression (Glut2/glucokinase) were measured in isolated pancreatic islets. Pancreases were submitted to histological and immunohistochemical analyses, and vagus nerve neural activity was recorded. RESULTS The vagotomized group presented with reduced body weight, growth, and adiposity; high food intake; reduced plasma glucose and triglyceride levels; and insulin resistance. The association of SPL with the VAG surgery attenuated, or abolished, the effects of VAG and reduced glucose-induced insulin secretion and interleukin-1β area in β cells, in addition to lowering vagal activity. CONCLUSIONS The absence of the spleen attenuated or blocked the effects of VAG on adiposity, triglycerides and glucose homeostasis, suggesting a synergistic effect of both on metabolism. The vagus nerve and spleen modulate the presence of interleukin-1β in β cells, possibly because of the reduction of glucose-induced insulin secretion, indicating a bidirectional flow between autonomous neural firing and the spleen, with repercussions for the endocrine pancreas.
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Affiliation(s)
- Bruna Schumaker Siqueira
- From the Laboratory of Endocrine Physiology and Metabolism (LAFEM), Western Paraná State University (UNIOESTE)
| | - Vanessa Marieli Ceglarek
- From the Laboratory of Endocrine Physiology and Metabolism (LAFEM), Western Paraná State University (UNIOESTE)
| | | | | | - Thiago Rentz
- Obesity and Comorbidities Research Center, University of Campinas (UNICAMP), Campinas
| | - Juliane Zanon Nenevê
- From the Laboratory of Endocrine Physiology and Metabolism (LAFEM), Western Paraná State University (UNIOESTE)
| | - Karoline Zanella Volinski
- From the Laboratory of Endocrine Physiology and Metabolism (LAFEM), Western Paraná State University (UNIOESTE)
| | - Sandra Schmidt Moraes
- From the Laboratory of Endocrine Physiology and Metabolism (LAFEM), Western Paraná State University (UNIOESTE)
| | - Ananda Malta
- Laboratory of Secretion Cell Biology, Department of Biotechnology, Genetics and Cell Biology, State University of Maringá (UEM), Maringá
| | - Paulo Cezar de Freitas Mathias
- Laboratory of Secretion Cell Biology, Department of Biotechnology, Genetics and Cell Biology, State University of Maringá (UEM), Maringá
| | | | - Sandra Lucinei Balbo
- From the Laboratory of Endocrine Physiology and Metabolism (LAFEM), Western Paraná State University (UNIOESTE)
| | - Sabrina Grassiolli
- From the Laboratory of Endocrine Physiology and Metabolism (LAFEM), Western Paraná State University (UNIOESTE)
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21
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PECULIARITIES OF THE EFFECT OF A HIGH-CALORIUM DIET ON THE STRUCTURE OF THE SPLEEN ON THE CORRECTION WITH ORLISTAT. WORLD OF MEDICINE AND BIOLOGY 2021. [DOI: 10.26724/2079-8334-2021-3-77-203-208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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22
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Kurhaluk N, Bojková B, Kajo K, Macháleková K, Kisková T. Addition of palm olein to lard-supplemented diet indicates myocardial dysfunction and augments oxidative stress by authophagy-lysosome pathway in rats. J Anim Physiol Anim Nutr (Berl) 2020; 105:587-598. [PMID: 33314355 DOI: 10.1111/jpn.13477] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 05/13/2020] [Accepted: 06/13/2020] [Indexed: 12/18/2022]
Abstract
This study evaluated a prolonged effect of palm oil addition to lard-supplemented diet (PLD) on the oxidative status, lysosomal enzyme activities, markers of hepatotoxicity and basic lipid profile in female rats. Female Sprague-Dawley rats received PLD (10% of total fat: 7.5% from palm oil and 2.5% from lard), and the control group received lard-supplemented diet (2.5% fat) from 28 days of age for 14 weeks. Histopathological evaluation of the liver from animals fed the PLD showed slight steatosis and signs of mild chronic inflammation. Reduction of extramedullary hematopoiesis and an increased ratio of red/white pulp were observed in the spleen. PLD induced oxidative stress (evaluated in the liver, heart, spleen, muscle and kidney) evidenced by an increase in conjugated dienes and malondialdehyde in all tissues except the muscle; protein carbonyl derivatives were increased as well. The changes in the antioxidant enzyme activities in the evaluated tissues were ambiguous except for the prominent increase in the heart. Lysosomal enzyme activities showed a tendency to increase in the heart and kidney and to decrease in the muscle and spleen. The De Ritis ratio, which is a biomarker of hepatotoxicity, was higher in the heart from animals fed the PLD. The palm oil addition to the lard-supplemented diet-induced prominent oxidative stress, particularly in myocardial tissue with involvement of the authophagy-lysosome pathway.
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Affiliation(s)
- Natalia Kurhaluk
- Department of Physiology, Institute of Biology and Earth Science, Pomeranian University in Slupsk, Słupsk, Poland
| | - Bianka Bojková
- Department of Animal Physiology, Institute of Biology and Ecology, Faculty of Science, P.J. Šafárik University in Košice, Košice, Slovakia
| | - Karol Kajo
- Department of Pathology, St. Elizabeth Cancer Institute Hospital, Bratislava, Slovakia.,Biomedical Research Center, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Katarína Macháleková
- Department of Pathology, St. Elizabeth Cancer Institute Hospital, Bratislava, Slovakia
| | - Terézia Kisková
- Department of Animal Physiology, Institute of Biology and Ecology, Faculty of Science, P.J. Šafárik University in Košice, Košice, Slovakia
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Exercise and/or Genistein Treatment Impact Gut Microbiota and Inflammation after 12 Weeks on a High-Fat, High-Sugar Diet in C57BL/6 Mice. Nutrients 2020; 12:nu12113410. [PMID: 33172007 PMCID: PMC7694625 DOI: 10.3390/nu12113410] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 10/30/2020] [Accepted: 11/02/2020] [Indexed: 02/07/2023] Open
Abstract
Genistein (Gen) and exercise (Exe) have been postulated as potential strategies to ameliorate obesity, inflammation, and gut microbiota (GM) with promising results. However, the impact of the combination of both Exe and Gen is yet to be investigated. We aimed to analyze the impacts of Exe, Gen, and their combined effects on GM and inflammation in mice after a 12-week high-fat, high-sugar diet (HFD). Eighty-three C57BL/6 mice were randomized to control, HFD, HFD + Exe, HFD + Gen, or HFD + Exe + Gen. The V4 region of the 16S rRNA gene was analyzed with Illumina MiSeq. Serum samples were used to analyze interleukin (Il)-6 and Tumor Necrosis Factor alpha (TNF-alpha). The HFD + Exe and HFD + Exe + Gen treatments resulted in significantly greater microbial richness compared to HFD. All the treatments had a significantly different impact on the GM community structure. Ruminococcus was significantly more abundant after the HFD + Exe + Gen treatment when compared to all the other HFD groups. Exe + Gen resulted in serum Il-6 concentrations similar to that of controls. TNF-alpha concentrations did not differ by treatment. Overall, Exe had a positive impact on microbial richness, and Ruminococcus might be the driving bacteria for the GM structure differences. Exe + Gen may be an effective treatment for preventing HFD-induced inflammation.
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Mouton AJ, Li X, Hall ME, Hall JE. Obesity, Hypertension, and Cardiac Dysfunction: Novel Roles of Immunometabolism in Macrophage Activation and Inflammation. Circ Res 2020; 126:789-806. [PMID: 32163341 PMCID: PMC7255054 DOI: 10.1161/circresaha.119.312321] [Citation(s) in RCA: 251] [Impact Index Per Article: 62.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Obesity and hypertension, which often coexist, are major risk factors for heart failure and are characterized by chronic, low-grade inflammation, which promotes adverse cardiac remodeling. While macrophages play a key role in cardiac remodeling, dysregulation of macrophage polarization between the proinflammatory M1 and anti-inflammatory M2 phenotypes promotes excessive inflammation and cardiac injury. Metabolic shifting between glycolysis and mitochondrial oxidative phosphorylation has been implicated in macrophage polarization. M1 macrophages primarily rely on glycolysis, whereas M2 macrophages rely on the tricarboxylic acid cycle and oxidative phosphorylation; thus, factors that affect macrophage metabolism may disrupt M1/M2 homeostasis and exacerbate inflammation. The mechanisms by which obesity and hypertension may synergistically induce macrophage metabolic dysfunction, particularly during cardiac remodeling, are not fully understood. We propose that obesity and hypertension induce M1 macrophage polarization via mechanisms that directly target macrophage metabolism, including changes in circulating glucose and fatty acid substrates, lipotoxicity, and tissue hypoxia. We discuss canonical and novel proinflammatory roles of macrophages during obesity-hypertension-induced cardiac injury, including diastolic dysfunction and impaired calcium handling. Finally, we discuss the current status of potential therapies to target macrophage metabolism during heart failure, including antidiabetic therapies, anti-inflammatory therapies, and novel immunometabolic agents.
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Affiliation(s)
- Alan J. Mouton
- Department of Physiology and Biophysics, University of Mississippi Medical Center, 2500 North State Street; Jackson, MS, 39216-4505
- Mississippi Center for Obesity Research, University of Mississippi Medical Center, 2500 North State Street; Jackson, MS, 39216-4505
| | - Xuan Li
- Department of Physiology and Biophysics, University of Mississippi Medical Center, 2500 North State Street; Jackson, MS, 39216-4505
- Mississippi Center for Obesity Research, University of Mississippi Medical Center, 2500 North State Street; Jackson, MS, 39216-4505
| | - Michael E. Hall
- Department of Physiology and Biophysics, University of Mississippi Medical Center, 2500 North State Street; Jackson, MS, 39216-4505
- Department of Medicine, University of Mississippi Medical Center, 2500 North State Street; Jackson, MS, 39216-4505
- Mississippi Center for Obesity Research, University of Mississippi Medical Center, 2500 North State Street; Jackson, MS, 39216-4505
| | - John E. Hall
- Department of Physiology and Biophysics, University of Mississippi Medical Center, 2500 North State Street; Jackson, MS, 39216-4505
- Mississippi Center for Obesity Research, University of Mississippi Medical Center, 2500 North State Street; Jackson, MS, 39216-4505
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Hellings A, Buchan L, Castro M, St. Aubin CR, Fisher AL, Al-Nakkash L, Broderick TL, Plochocki JH. Bone Strength Is Improved with Genistein Treatment in Mice with Diet-Induced Obesity. Curr Dev Nutr 2019; 3:nzz121. [PMID: 31750414 PMCID: PMC6856937 DOI: 10.1093/cdn/nzz121] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 09/23/2019] [Accepted: 10/21/2019] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND High caloric intake of saturated fat and refined sugars accelerates the development of obesity and diabetes and increases bone fracture risk. Some evidence suggests that consumption of a diet rich in phytoestrogens like genistein has the potential to strengthen bone biomechanical properties. Its bone-strengthening properties may mitigate fracture risk associated with metabolic conditions like obesity and diabetes, especially when combined with exercise. OBJECTIVE In this study, we test the effects of genistein, exercise training, and combination treatment on biomechanical properties of cortical bone in mice fed a high-fat, high-sugar (HFHS) diet. METHODS Eighty C67BL6 mice (40 females, 40 males) aged 6 wk were treated for 12 wk with an HFHS diet containing 60% fat and drinking water with 4.2 g/L sugar (55% sucrose, 45% fructose). Subgroups of the mice were also treated with genistein and/or moderate exercise (treadmill running). Genistein was incorporated into the HFHS diet (600 mg genistein/kg HFHS) and exercise was performed daily for 30 min, 5 d/wk (n = 10 females, 10 males per group). Three-point bending mechanical testing and quantitative fluorescence microscopy were conducted on femurs to measure bone strength and matrix quality. RESULTS Mechanical testing revealed HFHS-fed mice treated with genistein, either alone or combined with exercise, had femurs that exhibited increased postyield displacement and reduced stiffness during 3-point bending in comparison with mice only treated with the HFHS diet. Femurs of genistein-treated mice also exhibited greater ultimate force required to achieve fracture. Quantitative fluorescence showed genistein reduced advanced glycation end product accumulation in bone matrix. Exercise treatment alone had no effect. CONCLUSIONS Treatment with genistein, either alone or in combination with exercise, improves fracture resistance in mice fed an HFHS diet by improving bone matrix quality and increasing bone strength.
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Affiliation(s)
- Austin Hellings
- Arizona College of Osteopathic Medicine, Midwestern University, Glendale, AZ, USA
| | - Levi Buchan
- Arizona College of Osteopathic Medicine, Midwestern University, Glendale, AZ, USA
| | - Monica Castro
- Department of Anatomy, College of Graduate Studies, Midwestern University, Glendale, AZ, USA
| | - Chaheyla R St. Aubin
- Department of Biomedical Sciences, College of Graduate Studies, Midwestern University, Glendale, AZ, USA
| | - Amy L Fisher
- Department of Biomedical Sciences, College of Graduate Studies, Midwestern University, Glendale, AZ, USA
| | - Layla Al-Nakkash
- Department of Physiology, College of Graduate Studies, Midwestern University, Glendale, AZ, USA
| | - Tom L Broderick
- Department of Physiology and Laboratory of Diabetes and Exercise Metabolism, College of Graduate Studies, Midwestern University, Glendale, AZ, USA
| | - Jeffrey H Plochocki
- Department of Anatomy, College of Graduate Studies, Midwestern University, Glendale, AZ, USA
- Department of Medical Education, College of Medicine, University of Central Florida, Orlando, FL, USA
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26
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Guareschi ZM, Ceglarek VM, Rodrigues PF, Huning LP, Festinalli C, Amorim JPDA, Grassiolli S. Exercise and Vitamin D Supplementation Modify Spleen Morphology in Lean, but not, in Monosodium-Glutamate-Obese Rats. ACTA ACUST UNITED AC 2019. [DOI: 10.14302/issn.2578-2371.jslr-19-2819] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
We evaluated the effect of exercise and vitamin D supplementation on histological aspects of the spleens of lean and obese rats. Male Wistar rats received neonatal administration of monosodium glutamate (MSG; 4g/Kg), while Control (CON) rats received an equimolar solution. At 30 days of age, CON and MSG rats were subdivided into Exercised (E) or Sedentary (S) groups and Vitamin D (VD; 12µg/Kg) supplemented or non-supplemented (NS) groups. At the 86th day of life, rats were euthanized, and their body weights and adiposity were evaluated. Spleens were submitted to histomorphometric analysis of the white pulp (WP), germinal center (GC) and lymphatic nodule (LN). Data are presented as mean ± SEM (p<0.05). MSG treatment promoted a reduction in spleen weight, increased LN thickness and WP area, but reduced GC occupation, compared to spleens of CON-lean rats (p<0.05). Exercise and VD did not provoke changes in the spleens of MSG-obese rats. In CON-lean rats, E and VD induced augmentation of LN thickness. VD supplementation increased the WP area, while E reduced GC area occupation in spleens of CON-lean rats (p<0.05). In conclusion, exercise and VD supplementation increased LN thickness and WP area, but had the opposite effect on the GC in spleens of CON-lean rats. However, neither exercise nor VD supplementation prevented the development of morphological abnormalities in the spleens of MSG-obese rats.
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Affiliation(s)
- Zoé Maria Guareschi
- Laboratory of Endocrine and Metabolic Physiology, University of West Parana (Unioeste), Cascavel, PR, Brazil. +55 4532203257
| | - Vanessa Marieli Ceglarek
- Laboratory of Endocrine and Metabolic Physiology, University of West Parana (Unioeste), Cascavel, PR, Brazil. +55 4532203257
| | - Patrick Fontes Rodrigues
- Laboratory of Endocrine and Metabolic Physiology, University of West Parana (Unioeste), Cascavel, PR, Brazil. +55 4532203257
| | - Luiz Pierre Huning
- Laboratory of Endocrine and Metabolic Physiology, University of West Parana (Unioeste), Cascavel, PR, Brazil. +55 4532203257
| | - Cintia Festinalli
- Laboratory of Endocrine and Metabolic Physiology, University of West Parana (Unioeste), Cascavel, PR, Brazil. +55 4532203257
| | | | - Sabrina Grassiolli
- Laboratory of Endocrine and Metabolic Physiology, University of West Parana (Unioeste), Cascavel, PR, Brazil. +55 4532203257
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