1
|
Salgueiro RB, Bolin AP, Andreotti S, Medeiros Komino AC, de Sousa É, de Fatima Silva F, Gomes de Proença AR, Laurato Sertié RA, Rodrigues AC, Lima FB. Long-term glucocorticoid infusion impairs epididymal adipocyte metabolism and maturation and affects miR-150-5p actions. Mol Cell Endocrinol 2024; 589:112250. [PMID: 38663485 DOI: 10.1016/j.mce.2024.112250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 03/29/2024] [Accepted: 04/15/2024] [Indexed: 05/03/2024]
Abstract
The most common form of hypercortisolism is iatrogenic Cushing's syndrome. Lipodystrophy and metabolic disorders can result from the use of exogenous glucocorticoids (GC). Adipocytes play an important role in the production of circulating exosomal microRNAs, and knockdown of Dicer promotes lipodystrophy. The aim of this study is to investigate the effect of GCs on epididymal fat and to assess their influence on circulating microRNAs associated with fat turnover. The data indicate that despite the reduction in adipocyte volume due to increased lipolysis and apoptosis, there is no difference in tissue mass, suggesting that epididymal fat pad, related to animal size, is not affected by GC treatment. Although high concentrations of GC have no direct effect on epididymal microRNA-150-5p expression, GC can induce epididymal adipocyte uptake of microRNA-150-5p, which regulates transcription factor Ppar gamma during adipocyte maturation. In addition, GC treatment increased lipolysis and decreased glucose-derived lipid and glycerol incorporation. In conclusion, the similar control and GC epididymal fat mass results from increased dense fibrogenic tissue and decreased adipocyte volume induced by the lipolytic effect of GC. These findings demonstrate the complexity of epididymal fat. They also highlight how this disease alters fat distribution. This study is the first in a series published by our laboratory showing the detailed mechanism of adipocyte turnover in this disease.
Collapse
Affiliation(s)
- Rafael Barrera Salgueiro
- University of São Paulo, Institute of Biomedical Sciences, Department of Physiology and Biophysics, São Paulo, SP, Brazil; University of Brasília, Biology Institute, Department of Physiological Sciences, Brasília, Federal District, Brazil.
| | - Anaysa Paola Bolin
- University of São Paulo, Institute of Biomedical Sciences, Department of Pharmacology, São Paulo, SP, Brazil
| | - Sandra Andreotti
- University of São Paulo, Institute of Biomedical Sciences, Department of Physiology and Biophysics, São Paulo, SP, Brazil
| | - Ayumi Cristina Medeiros Komino
- University of São Paulo, Institute of Biomedical Sciences, Department of Physiology and Biophysics, São Paulo, SP, Brazil
| | - Érica de Sousa
- University of São Paulo, Institute of Biomedical Sciences, Department of Pharmacology, São Paulo, SP, Brazil
| | - Flaviane de Fatima Silva
- University of São Paulo, Institute of Biomedical Sciences, Department of Physiology and Biophysics, São Paulo, SP, Brazil
| | | | - Rogério Antonio Laurato Sertié
- University of São Paulo, Institute of Biomedical Sciences, Department of Physiology and Biophysics, São Paulo, SP, Brazil
| | - Alice Cristina Rodrigues
- University of São Paulo, Institute of Biomedical Sciences, Department of Pharmacology, São Paulo, SP, Brazil
| | - Fabio Bessa Lima
- University of São Paulo, Institute of Biomedical Sciences, Department of Physiology and Biophysics, São Paulo, SP, Brazil
| |
Collapse
|
2
|
de Sousa É, de Mendonça M, Bolin AP, de Oliveira NP, Real CC, Hu X, Huang ZP, Wang DZ, Rodrigues AC. Sex-specific regulation of miR-22 and ERα in white adipose tissue of obese dam's female offspring impairs the early postnatal development of functional beige adipocytes in mice. Biochim Biophys Acta Mol Basis Dis 2024; 1870:167057. [PMID: 38331111 DOI: 10.1016/j.bbadis.2024.167057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 12/31/2023] [Accepted: 01/30/2024] [Indexed: 02/10/2024]
Abstract
During inguinal adipose tissue (iWAT) ontogenesis, beige adipocytes spontaneously appear between postnatal 10 (P10) and P20 and their ablation impairs iWAT browning capacity in adulthood. Since maternal obesity has deleterious effects on offspring iWAT function, we aimed to investigate its effect in spontaneous iWAT browning in offspring. Female C57BL/6 J mice were fed a control or obesogenic diet six weeks before mating. Male and female offspring were euthanized at P10 and P20 or weaned at P21 and fed chow diet until P60. At P50, mice were treated with saline or CL316,243, a β3-adrenoceptor agonist, for ten days. Maternal obesity induced insulin resistance at P60, and CL316,243 treatment effectively restored insulin sensitivity in male but not female offspring. This discrepancy occurred due to female offspring severe browning impairment. During development, the spontaneous iWAT browning and sympathetic nerve branching at P20 were severely impaired in female obese dam's offspring but occurred normally in males. Additionally, maternal obesity increased miR-22 expression in the iWAT of male and female offspring during development. ERα, a target and regulator of miR-22, was concomitantly upregulated in the male's iWAT. Next, we evaluated miR-22 knockout (KO) offspring at P10 and P20. The miR-22 deficiency does not affect spontaneous iWAT browning in females and, surprisingly, anticipates iWAT browning in males. In conclusion, maternal obesity impairs functional iWAT development in the offspring in a sex-specific way that seems to be driven by miR-22 levels and ERα signaling. This impacts adult browning capacity and glucose homeostasis, especially in female offspring.
Collapse
Affiliation(s)
- Érica de Sousa
- Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil
| | - Mariana de Mendonça
- Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil
| | - Anaysa Paola Bolin
- Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil
| | - Nayara Preste de Oliveira
- Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil
| | | | - Xiaoyun Hu
- Department of Cardiology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Zhan-Peng Huang
- Department of Cardiology, Center for Translational Medicine, Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Da-Zhi Wang
- Department of Cardiology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Alice Cristina Rodrigues
- Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil.
| |
Collapse
|
3
|
de Sousa É, Rodrigues AC. Maternal obesity attenuates PPARγ nuclear migration impairing offspring adipogenesis. J Mol Endocrinol 2023; 71:e230050. [PMID: 37486764 DOI: 10.1530/jme-23-0050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 07/24/2023] [Indexed: 07/25/2023]
Abstract
Maternal obesity predisposes offspring to obesity in adulthood. Since the perinatal period is a critical window for adipose organogenesis, we evaluated if maternal obesity affects the perinatal offspring adipogenesis. Female mice were fed a standard diet (eutrophic dam, ED) or a high-fat diet supplemented with condensed milk (obese dam, OD) for 6 weeks before mating, and the diets were maintained until the end of the protocol. Inguinal adipose tissue of offspring at gestational day 16.5 (E16.5), postnatal day 0 (P0), and P2 was collected to analyze morphological and molecular features. In OD offspring, the number of preadipocytes increased at E16.5 and P0 compared to ED offspring. The cell cycle-related elements Ccnd1 and Ki67 were also upregulated in these groups. In parallel, lipid accumulation started at E16.5 in OD offspring, while ED offspring preadipocytes only accumulated lipids after P0. Peroxisome proliferator-activated receptor gamma (PPARγ) levels and activity were decreased in OD offspring due to impaired nuclear migration. Increased Hdac1 expression, which negatively regulates PPAR-responsive elements in the genome, was also detected. At P2, OD adipocytes presented abnormal features, including a clustered distribution and decreased expression of PPARγ target genes and Adbr3 and Slc2a4, which are highly expressed in mature functional adipocytes. The abnormal adipose tissue is one of the major factors promoting metabolic abnormalities in adulthood. This study demonstrates for the first time the morphological and molecular alterations induced by maternal obesity in vivo in the perinatal adipogenesis in murine inguinal adipose tissue.
Collapse
Affiliation(s)
- Érica de Sousa
- Department of Pharmacology, Instituto de Ciencias Biomedicas, Universidade de Sao Paulo, São Paulo, SP, Brazil
| | - Alice Cristina Rodrigues
- Department of Pharmacology, Instituto de Ciencias Biomedicas, Universidade de Sao Paulo, São Paulo, SP, Brazil
| |
Collapse
|
4
|
Valdivia LFG, Castro É, Eichler RADS, Moreno MF, de Sousa É, Jardim GFR, Peixoto AS, Moraes MN, Castrucci AMDL, Nedergaard J, Petrovic N, Festuccia WT, Reckziegel P. Cold acclimation and pioglitazone combined increase thermogenic capacity of BAT and WAT but this does not translate into higher energy expenditure. Am J Physiol Endocrinol Metab 2023; 324:E358-E373. [PMID: 36856189 DOI: 10.1152/ajpendo.00217.2022] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
Cold acclimation and pharmacological peroxisome proliferator-activated receptor γ (PPARγ) activation have each earlier been shown to recruit brown adipose tissue (BAT) and beige adipocytes thermogenic machinery, enhancing uncoupling protein 1 (UCP1)-mediated thermogenic capacity. We here investigated whether cold acclimation and PPARγ agonism combined have additive effects in inducing brown and beige adipocytes UCP1 content and whether this translates into a higher thermogenic capacity and energy expenditure. C57BL/6J mice treated or not with pioglitazone (30 mg/kg/day) were maintained at 21°C or exposed to cold (7°C) for 15 days and evaluated for thermogenic capacity, energy expenditure and interscapular BAT (iBAT) and inguinal white adipose tissue (iWAT) mass, morphology, UCP1 content and gene expression, glucose uptake and oxygen consumption. Cold acclimation and PPARγ agonism combined synergistically increased iBAT and iWAT total UCP1 content and mRNA levels of the thermogenesis-related proteins PGC1a, CIDEA, FABP4, GYK, PPARa, LPL, GLUTs (GLUT1 in iBAT and GLUT4 in iWAT), and ATG when compared to cold and pioglitazone individually. This translated into a stronger increase in body temperature in response to the β3-adrenergic agonist CL316,243 and iBAT and iWAT respiration induced by succinate and pyruvate in comparison to that seen in either cold-acclimated or pioglitazone-treated mice. However, basal energy expenditure, BAT glucose uptake and glucose tolerance were not increased above that seen in cold-acclimated untreated mice. In conclusion, cold acclimation and PPARγ agonism combined induced a robust increase in brown and beige adipocytes UCP1 content and thermogenic capacity, much higher than each treatment individually. However, our findings enforce the concept that increases in total UCP1 do not innately lead to higher energy expenditure.
Collapse
Affiliation(s)
- Luís Felipe Galvão Valdivia
- Programa de Pós-graduação em Farmacologia, Departamento de Farmacologia, Instituto de Farmacologia e Biologia Molecular, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Érique Castro
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biomédicas (ICB), Universidade de São Paulo, Sao Paulo, Brazil
| | | | - Mayara Franzoi Moreno
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biomédicas (ICB), Universidade de São Paulo, Sao Paulo, Brazil
| | - Érica de Sousa
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo, Brazil
| | | | - Albert Souza Peixoto
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biomédicas (ICB), Universidade de São Paulo, Sao Paulo, Brazil
| | - Maria Nathália Moraes
- Departamento de Ciências Biológicas, Instituto de Ciências Químicas, Ambientais e Farmacêuticas, Universidade Federal de São Paulo, Brazil
| | | | - Jan Nedergaard
- Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, Stockholm, Sweden
| | - Natasa Petrovic
- Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, Stockholm, Sweden
| | - William T Festuccia
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biomédicas (ICB), Universidade de São Paulo, Sao Paulo, Brazil
| | - Patrícia Reckziegel
- Programa de Pós-graduação em Farmacologia, Departamento de Farmacologia, Instituto de Farmacologia e Biologia Molecular, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo, Brazil
| |
Collapse
|
5
|
Lã O, de Azevedo C, Barra C, Netto-Ferreira J, de Sousa É, Rocha Jr. J. A GREEN AND RELIABLE TITRIMETRIC METHOD FOR TOTAL ORGANIC CARBON DETERMINATION WITH POTASSIUM PERMANGANATE. QUIM NOVA 2022. [DOI: 10.21577/0100-4042.20170961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The determination of total organic carbon in soils, fertilizers, sewage sludge, sediments, and humic extracts is widely performed by chemical oxidation methods with K2Cr2O7. The Yeomans-Bremner (YB) method is currently the one that stands out the most. The drawback of these methods is the large amount of concentrated H2SO4 used, which generates a large amount of hazardous waste. This work proposes using KMnO4 as an alternative to K2Cr2O7 for a lower consumption of H2SO4. The method uses the back titration of Fe2+ added to consume both the MnO2 produced and the excess KMnO4 that was not consumed in the OM oxidation. A non-trivial and yet not explored stoichiometry was applied for this purpose, providing a success not yet achieved in using permanganate to determine TOC by titration. The ideal condition for the oxidation of OC was determined by the analysis of a potassium hydrogen phthalate standard and involved the use of 0.125 mol L-1 H2SO4 and temperature of 70 °C, obtaining a significant advantage over the YB method (concentrated H2SO4 and 170 °C). The proposed method was applied to the analysis of soil samples, producing conversion factors for soil organic carbon that varied between 0.652 and 1.12.
Collapse
|
6
|
de Mendonça M, Rocha KC, de Sousa É, Pereira BMV, Oyama LM, Rodrigues AC. Aerobic exercise training regulates serum extracellular vesicle miRNAs linked to obesity to promote their beneficial effects in mice. Am J Physiol Endocrinol Metab 2020; 319:E579-E591. [PMID: 32744099 DOI: 10.1152/ajpendo.00172.2020] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
There is a growing body of evidence that extracellular vesicles (EVs) and their cargo of RNA, DNA, and protein are released in the circulation with exercise and might mediate interorgan communication. C57BL6/J male mice were subjected to diet-induced obesity and aerobic training on a treadmill for 8 wk. The effect of aerobic training was evaluated in the liver, muscle, kidney, and white/brown adipose tissue. To provide new mechanistic insight, we profiled miRNA from serum EVs of obese and obese trained mice. We demonstrate that aerobic training changes the circulating EV miRNA profile of obese mice, including decreases in miR-122, miR-192, and miR-22 levels. Circulating miRNA levels were associated with miRNA levels in mouse liver white adipose tissue (WAT). In WAT, aerobically trained obese mice showed reduced adipocyte hypertrophy and increased the number of smaller adipocytes and the expression of Cebpa, Pparg, Fabp4 (adipogenesis markers), and ATP-citrate lyase enzyme activity. Importantly, miR-22 levels negatively correlated with the expression of adipogenesis and insulin sensitivity markers. In the liver, aerobic training reverted obesity-induced steatohepatitis, and steatosis score and Pparg expression were negatively correlated with miR-122 levels. The prometabolic effects of aerobic exercise in obesity possibly involve EV miRNAs, which might be involved in communication between liver and WAT. Our data provide significant evidence demonstrating that aerobic training exercise-induced EVs mediate the effect of exercise on adipose tissue metabolism.
Collapse
Affiliation(s)
- Mariana de Mendonça
- Departamento de Farmacologia, Universidade de Sao Paulo Instituto de Ciencias Biomedicas, São Paulo, Brasil
| | - Karina C Rocha
- Departamento de Farmacologia, Universidade de Sao Paulo Instituto de Ciencias Biomedicas, São Paulo, Brasil
| | - Érica de Sousa
- Departamento de Farmacologia, Universidade de Sao Paulo Instituto de Ciencias Biomedicas, São Paulo, Brasil
| | - Beatriz M V Pereira
- Departamento de Farmacologia, Universidade de Sao Paulo Instituto de Ciencias Biomedicas, São Paulo, Brasil
| | - Lila Missae Oyama
- Departamento de Fisiologia, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brasil
| | - Alice C Rodrigues
- Departamento de Farmacologia, Universidade de Sao Paulo Instituto de Ciencias Biomedicas, São Paulo, Brasil
| |
Collapse
|
7
|
de Mendonça M, de Sousa É, da Paixão AO, Araújo Dos Santos B, Roveratti Spagnol A, Murata GM, Araújo HN, Imamura de Lima T, Passos Simões Fróes Guimarães DS, Silveira LR, Rodrigues AC. MicroRNA miR-222 mediates pioglitazone beneficial effects on skeletal muscle of diet-induced obese mice. Mol Cell Endocrinol 2020; 501:110661. [PMID: 31770568 DOI: 10.1016/j.mce.2019.110661] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 11/19/2019] [Accepted: 11/19/2019] [Indexed: 01/23/2023]
Abstract
Pioglitazone belongs to the class of drugs thiazolidinediones (TZDs) and is an oral hypoglycemic drug, used in the treatment of type 2 diabetes, which improves insulin sensitivity in target tissues. Adipose tissue is the main target of pioglitazone, a PPARg and PPARa agonist; however, studies also point to skeletal muscle as a target. Non-PPAR targets of TZDs have been described, thus we aimed to study the direct effects of pioglitazone on skeletal muscle and the possible role of microRNAs as targets of this drug. Pioglitazone treatment of obese mice increased insulin-mediated glucose transport as a result of increased fatty acid oxidation and mitochondrial activity. PPARg blockage by treatment with GW9662 nullified pioglitazone's effect on systemic and muscle insulin sensitivity and citrate synthase activity of obese mice. After eight weeks of high-fat diet, miR-221-3p expression in soleus muscle was similar among the groups and miR-23b-3p and miR-222-3p were up-regulated in obese mice compared to the control group, and treatment with pioglitazone was able to reverse this condition. In vitro studies in C2C12 cells suggest that inhibition of miR-222-3p protects C2C12 cells from insulin resistance and increased non-mitochondrial respiration induced by palmitate. Together, these data demonstrate a role of pioglitazone in the downregulation of microRNAs that is not dependent on PPARg. Moreover, miR-222 may be a novel PPARg-independent mechanism through which pioglitazone improves insulin sensitivity in skeletal muscle.
Collapse
MESH Headings
- Adipose Tissue/drug effects
- Adipose Tissue/metabolism
- Animals
- Blood Glucose/drug effects
- Blood Glucose/metabolism
- Diabetes Mellitus, Experimental/drug therapy
- Diabetes Mellitus, Experimental/metabolism
- Diabetes Mellitus, Type 2/drug therapy
- Diabetes Mellitus, Type 2/metabolism
- Diet, High-Fat/adverse effects
- Disease Models, Animal
- Down-Regulation/drug effects
- Glucose/metabolism
- Glucose Tolerance Test
- Hypoglycemic Agents
- Insulin/metabolism
- Insulin Resistance/physiology
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Obese
- MicroRNAs/metabolism
- Muscle, Skeletal/drug effects
- Muscle, Skeletal/metabolism
- Obesity/drug therapy
- Obesity/metabolism
- PPAR alpha/metabolism
- PPAR gamma/metabolism
- Palmitates/pharmacology
- Pioglitazone/pharmacology
- Thiazolidinediones/pharmacology
- Up-Regulation/drug effects
Collapse
Affiliation(s)
| | - Érica de Sousa
- Department of Pharmacology, University of Sao Paulo, Sao Paulo, SP, Brazil
| | - Ailma O da Paixão
- Department of Pharmacology, University of Sao Paulo, Sao Paulo, SP, Brazil
| | | | | | - Gilson M Murata
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, SP, Brazil
| | - Hygor N Araújo
- Obesity and Comorbidities Research Center, Campinas, Sao Paulo, Brazil; Department of Structural and Functional Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Sao Paulo, Brazil
| | - Tanes Imamura de Lima
- Obesity and Comorbidities Research Center, Campinas, Sao Paulo, Brazil; Department of Structural and Functional Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Sao Paulo, Brazil
| | - Dimitrius Santiago Passos Simões Fróes Guimarães
- Obesity and Comorbidities Research Center, Campinas, Sao Paulo, Brazil; Department of Structural and Functional Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Sao Paulo, Brazil
| | - Leonardo R Silveira
- Obesity and Comorbidities Research Center, Campinas, Sao Paulo, Brazil; Department of Structural and Functional Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Sao Paulo, Brazil
| | - Alice C Rodrigues
- Department of Pharmacology, University of Sao Paulo, Sao Paulo, SP, Brazil.
| |
Collapse
|
8
|
de Mendonça M, Dos Santos BDAC, de Sousa É, Rodrigues AC. Adiponectin is required for pioglitazone-induced improvements in hepatic steatosis in mice fed a high-fat diet. Mol Cell Endocrinol 2019; 493:110480. [PMID: 31176759 DOI: 10.1016/j.mce.2019.110480] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 04/23/2019] [Accepted: 06/05/2019] [Indexed: 12/25/2022]
Abstract
Pioglitazone has been used for the treatment of nonalcoholic fatty liver disease (NAFLD) related to diabetes. The role of adiponectin in pioglitazone-induced improvements in NAFLD was studied by using wild-type (adipoWT) and adiponectin knockout (adipoKO) mice. High-fat diet fed mice were insulin resistant, glucose intolerant and had increased hepatic lipid accumulation as evidenced by increased NAFLD activity score. Despite pioglitazone has improved insulin resistance in both genotypes, hepatic steatosis was only improved in adipoWT obese mice. Amelioration of NAFLD in adipoWT mice promoted by pioglitazone was associated with up-regulation of Pparg, Fgf21 and down-regulation of Pepck liver expression. On the other hand, resistance to pioglitazone treatment in adipoKO mice was associated with increased expression of miR-192 and Hsl, which was not followed by increased fatty acid oxidation. In conclusion, our data provides evidence that increased adiponectin production by pioglitazone is necessary for its beneficial action on NAFLD.
Collapse
Affiliation(s)
- Mariana de Mendonça
- Institute of Biomedical Sciences, Department of Pharmacology, University of Sao Paulo, Sao Paulo, SP, Brazil
| | | | - Érica de Sousa
- Institute of Biomedical Sciences, Department of Pharmacology, University of Sao Paulo, Sao Paulo, SP, Brazil
| | - Alice Cristina Rodrigues
- Institute of Biomedical Sciences, Department of Pharmacology, University of Sao Paulo, Sao Paulo, SP, Brazil.
| |
Collapse
|
9
|
Frias FDT, Rocha KCE, de Mendonça M, Murata GM, Araujo HN, de Sousa LGO, de Sousa É, Hirabara SM, Leite NDC, Carneiro EM, Curi R, Silveira LR, Rodrigues AC. Fenofibrate reverses changes induced by high-fat diet on metabolism in mice muscle and visceral adipocytes. J Cell Physiol 2017; 233:3515-3528. [PMID: 28926107 DOI: 10.1002/jcp.26203] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Accepted: 09/14/2017] [Indexed: 02/06/2023]
Abstract
The effect of fenofibrate on the metabolism of skeletal muscle and visceral white adipose tissue of diet-induced obese (DIO) mice was investigated. C57BL/6J male mice were fed either a control or high-fat diet for 8 weeks. Fenofibrate (50 mg/Kg BW, daily) was administered by oral gavage during the last two weeks of the experimental period. Insulin-stimulated glucose metabolism in soleus muscles, glucose tolerance test, insulin tolerance test, indirect calorimetry, lipolysis of visceral white adipose tissue, expression of miR-103-3p in adipose tissue, and miR-1a, miR-133a/b, miR-206, let7b-5p, miR-23b-3p, miR-29-3p, miR-143-3p in soleus muscle, genes related to glucose and fatty acid metabolism in adipose tissue and soleus muscle, and proteins (phospho-AMPKα2, Pgc1α, Cpt1b), intramuscular lipid staining, and activities of fatty acid oxidation enzymes in skeletal muscle were investigated. In DIO mice, fenofibrate prevented weight gain induced by HFD feeding by increasing energy expenditure; improved whole body glucose homeostasis, and in skeletal muscle, increased insulin dependent glucose uptake, miR-1a levels, reduced intramuscular lipid accumulation, and phospho-AMPKα2 levels. In visceral adipose tissue of obese mice, fenofibrate decreased basal lipolysis rate and visceral adipocytes hypertrophy, and induced the expression of Glut-4, Irs1, and Cav-1 mRNA and miR-103-3p suggesting a higher insulin sensitivity of the adipocytes. The evidence is presented herein that beneficial effects of fenofibrate on body weight, glucose homeostasis, and muscle metabolism might be related to its action in adipose tissue. Moreover, fenofibrate regulates miR-1a-3p in soleus and miR-103-3p in adipose tissue, suggesting these microRNAs might contribute to fenofibrate beneficial effects on metabolism.
Collapse
Affiliation(s)
- Flávia de T Frias
- Department of Pharmacology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| | - Karina C E Rocha
- Department of Pharmacology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| | - Mariana de Mendonça
- Department of Pharmacology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| | - Gilson M Murata
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| | - Hygor N Araujo
- Obesity and Comorbidities Research Center, Campinas, Sao Paulo, Brazil.,Department of Structural and Functional Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Sao Paulo, Brazil
| | - Luís G O de Sousa
- Department of Pharmacology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| | - Érica de Sousa
- Department of Pharmacology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| | - Sandro M Hirabara
- Interdisciplinary Post-Graduate Program in Health Science, Cruzeiro do Sul University, Sao Paulo, Brazil
| | - Nayara de C Leite
- Obesity and Comorbidities Research Center, Campinas, Sao Paulo, Brazil.,Department of Structural and Functional Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Sao Paulo, Brazil
| | - Everardo M Carneiro
- Obesity and Comorbidities Research Center, Campinas, Sao Paulo, Brazil.,Department of Structural and Functional Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Sao Paulo, Brazil
| | - Rui Curi
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Brazil.,Interdisciplinary Post-Graduate Program in Health Science, Cruzeiro do Sul University, Sao Paulo, Brazil
| | - Leonardo R Silveira
- Obesity and Comorbidities Research Center, Campinas, Sao Paulo, Brazil.,Department of Structural and Functional Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Sao Paulo, Brazil
| | - Alice C Rodrigues
- Department of Pharmacology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| |
Collapse
|
10
|
de Sousa É, Walter LT, Higa GSV, Casado OAN, Kihara AH. Developmental and functional expression of miRNA-stability related genes in the nervous system. PLoS One 2013; 8:e56908. [PMID: 23700402 PMCID: PMC3659046 DOI: 10.1371/journal.pone.0056908] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2012] [Accepted: 01/15/2013] [Indexed: 11/19/2022] Open
Abstract
In the nervous system, control of gene expression by microRNAs (miRNAs) has been investigated in fundamental processes, such as development and adaptation to ambient demands. The action of these short nucleotide sequences on specific genes depends on intracellular concentration, which in turn reflects the balance of biosynthesis and degradation. Whereas mechanisms underlying miRNA biogenesis has been investigated in recent studies, little is known about miRNA-stability related proteins. We first detected two genes in the retina that have been associated to miRNA stability, XRN2 and PAPD4. These genes are highly expressed during retinal development, however with distinct subcellular localization. We investigated whether these proteins are regulated during specific phases of the cell cycle. Combined analyses of nuclei position in neuroblastic layer and labeling using anti-cyclin D1 revealed that both proteins do not accumulate in S or M phases of the cell cycle, being poorly expressed in progenitor cells. Indeed, XRN2 and PAPD4 were observed mainly after neuronal differentiation, since low expression was also observed in astrocytes, endothelial and microglial cells. XRN2 and PAPD4 are expressed in a wide variety of neurons, including horizontal, amacrine and ganglion cells. To evaluate the functional role of both genes, we carried out experiments addressed to the retinal adaptation in response to different ambient light conditions. PAPD4 is upregulated after 3 and 24 hours of dark- adaptation, revealing that accumulation of this protein is governed by ambient light levels. Indeed, the fast and functional regulation of PAPD4 was not related to changes in gene expression, disclosing that control of protein levels occurs by post-transcriptional mechanisms. Furthermore, we were able to quantify changes in PAPD4 in specific amacrine cells after dark -adaptation, suggesting for circuitry-related roles in visual perception. In summary, in this study we first described the ontogenesis and functional expression of these two miRNA-stability related proteins in the retina.
Collapse
Affiliation(s)
- Érica de Sousa
- Núcleo de Cognição e Sistemas Complexos, Centro de Matemática, Computação e Cognição, Universidade Federal do ABC, Santo André, SP, Brasil
| | - Lais Takata Walter
- Núcleo de Cognição e Sistemas Complexos, Centro de Matemática, Computação e Cognição, Universidade Federal do ABC, Santo André, SP, Brasil
| | - Guilherme Shigueto Vilar Higa
- Núcleo de Cognição e Sistemas Complexos, Centro de Matemática, Computação e Cognição, Universidade Federal do ABC, Santo André, SP, Brasil
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brasil
| | - Otávio Augusto Nocera Casado
- Núcleo de Cognição e Sistemas Complexos, Centro de Matemática, Computação e Cognição, Universidade Federal do ABC, Santo André, SP, Brasil
| | - Alexandre Hiroaki Kihara
- Núcleo de Cognição e Sistemas Complexos, Centro de Matemática, Computação e Cognição, Universidade Federal do ABC, Santo André, SP, Brasil
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brasil
- * E-mail:
| |
Collapse
|
11
|
Paschon V, Higa GSV, Walter LT, de Sousa É, Zuzarte FCC, Weber VRS, Resende RR, Kihara AH. A new and reliable guide for studies of neuronal loss based on focal lesions and combinations of in vivo and in vitro approaches. PLoS One 2013; 8:e60486. [PMID: 23585836 PMCID: PMC3622006 DOI: 10.1371/journal.pone.0060486] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Accepted: 02/26/2013] [Indexed: 12/17/2022] Open
Abstract
In this study, we describe a simple and reliable method to study neuroprotective effects in living and organized neural tissue. This method, which was based on retinal explants for in vivo focal lesions, was conceived as a collection of modular procedures, which can be customized for particular demands. With this model, it is possible to combine immunohistochemistry with image data analysis to track the two- or three-dimensional redistribution of proteins as a time/space function of primary cell loss. At the same time, it is possible to finely control the exposure of the tissue to specific drugs and molecules. In order to illustrate the use of the proposed method, we tested the effects of two different nanotube compounds on retinal explant viability. Transcriptome analyses can be separately performed in the lesion focus and penumbra with laser capture microdissection followed by polymerase chain reaction analyses. In addition, other common experimental drawbacks, such as high individual variance, are eliminated. With intraocular injections, treatments can be verified in vivo, with one eye serving as the experimental tissue and the other serving as the control tissue. In summary, we describe a flexible and easy method, which can be useful in combination with a broad variety of recently developed neuroprotective strategies, to study neurodegeneration.
Collapse
Affiliation(s)
- Vera Paschon
- Núcleo de Cognição e Sistemas Complexos, Centro de Matemática, Computação e Cognição, Universidade Federal do ABC, Santo André, São Paulo, Brasil
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, São Paulo, Brasil
| | - Guilherme Shigueto Vilar Higa
- Núcleo de Cognição e Sistemas Complexos, Centro de Matemática, Computação e Cognição, Universidade Federal do ABC, Santo André, São Paulo, Brasil
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, São Paulo, Brasil
| | - Lais Takata Walter
- Núcleo de Cognição e Sistemas Complexos, Centro de Matemática, Computação e Cognição, Universidade Federal do ABC, Santo André, São Paulo, Brasil
| | - Érica de Sousa
- Núcleo de Cognição e Sistemas Complexos, Centro de Matemática, Computação e Cognição, Universidade Federal do ABC, Santo André, São Paulo, Brasil
| | - Fausto Colla Cortesão Zuzarte
- Núcleo de Cognição e Sistemas Complexos, Centro de Matemática, Computação e Cognição, Universidade Federal do ABC, Santo André, São Paulo, Brasil
| | - Vivian Roca Schwendler Weber
- Núcleo de Cognição e Sistemas Complexos, Centro de Matemática, Computação e Cognição, Universidade Federal do ABC, Santo André, São Paulo, Brasil
| | - Rodrigo Ribeiro Resende
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brasil
| | - Alexandre Hiroaki Kihara
- Núcleo de Cognição e Sistemas Complexos, Centro de Matemática, Computação e Cognição, Universidade Federal do ABC, Santo André, São Paulo, Brasil
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, São Paulo, Brasil
- * E-mail:
| |
Collapse
|