1
|
Alarcon G, Sierra L, Roco J, Van Nieuwenhove C, Medina A, Medina M, Jerez S. Effects of Cold Pressed Chia Seed Oil Intake on Hematological and Biochemical Biomarkers in Both Normal and Hypercholesterolemic Rabbits. PLANT FOODS FOR HUMAN NUTRITION (DORDRECHT, NETHERLANDS) 2023; 78:179-185. [PMID: 36515802 DOI: 10.1007/s11130-022-01036-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 11/27/2022] [Indexed: 06/17/2023]
Abstract
Most of the studies on the beneficial effects of chia have been conducted with its seeds. There is less evidence about the effects of cold pressed chia seeds oil on hypercholesterolemia-induced alterations. Thus, this study investigated the effects of cold pressed chia seed oil supplementation on certain hematological and biochemical biomarkers in both normal and hypercholesterolemic rabbits. Thirty two male rabbits were assigned to four different groups and fed on: 1) a regular diet (CD), 2) CD supplemented with 10% chia oil, 3) CD supplemented with 1% cholesterol, 4) CD supplemented with 1% cholesterol and 10% chia oil. After six weeks of dietary interventions, mean arterial blood pressure and visceral fat were measured and blood samples were analyzed for lipid profiles and hematological parameters while erythrocyte membranes and retroperitoneal fat were analyzed for fatty acids composition and biochemical biomarkers. Dietary intervention with chia oil achieved control of the hypercholesterolemia-induced increase of mean arterial blood pressure, neutrophil to lymphocytes ratio, erythrocyte membrane fluidity, and improved erythrocyte morphological alterations. With regard to inflammatory biomarkers, chia oil supplementation reduced omega-6/omega-3 polyunsaturated fatty acids ratios and arachidonic/linolenic fatty acids ratios both in erythrocytes and fat from normal and hypercholesterolemic rabbits. The increase of linolenic fatty acid into the retroperitoneal fat was about 9 times higher than its respective controls. These results provide support for the potential health benefits of chia oil intake on hypercholesterolemia-associated clinical, hematological and biochemical alterations.
Collapse
Affiliation(s)
- Gabriela Alarcon
- Instituto Superior de Investigaciones Biológicas (INSIBIO, UNT-CONICET), Av. Independencia 1800, 4000, San Miguel de Tucumán, Tucumán, Argentina
- Facultad de Ciencias Naturales, Universidad Nacional de Tucumán (UNT), Miguel Lillo 298, San Miguel de Tucumán, Tucumán, Argentina
| | - Liliana Sierra
- Facultad de Ciencias Naturales, Universidad Nacional de Tucumán (UNT), Miguel Lillo 298, San Miguel de Tucumán, Tucumán, Argentina
| | - Julieta Roco
- Instituto Superior de Investigaciones Biológicas (INSIBIO, UNT-CONICET), Av. Independencia 1800, 4000, San Miguel de Tucumán, Tucumán, Argentina
| | - Carina Van Nieuwenhove
- Facultad de Ciencias Naturales, Universidad Nacional de Tucumán (UNT), Miguel Lillo 298, San Miguel de Tucumán, Tucumán, Argentina
- Centro de Referencia Para Lactobacilos (CERELA-CONICET), Chacabuco 145, 4000, San Miguel de Tucumán, Tucumán, Argentina
| | - Analia Medina
- Facultad de Ciencias Naturales, Universidad Nacional de Tucumán (UNT), Miguel Lillo 298, San Miguel de Tucumán, Tucumán, Argentina
| | - Mirta Medina
- Facultad de Ciencias Naturales, Universidad Nacional de Tucumán (UNT), Miguel Lillo 298, San Miguel de Tucumán, Tucumán, Argentina
| | - Susana Jerez
- Instituto Superior de Investigaciones Biológicas (INSIBIO, UNT-CONICET), Av. Independencia 1800, 4000, San Miguel de Tucumán, Tucumán, Argentina.
- Facultad de Ciencias Naturales, Universidad Nacional de Tucumán (UNT), Miguel Lillo 298, San Miguel de Tucumán, Tucumán, Argentina.
| |
Collapse
|
2
|
González-Blázquez R, Alcalá M, Fernández-Alfonso MS, Steckelings UM, Lorenzo MP, Viana M, Boisvert WA, Unger T, Gil-Ortega M, Somoza B. C21 preserves endothelial function in the thoracic aorta from DIO mice: role for AT2, Mas and B2 receptors. Clin Sci (Lond) 2021; 135:1145-1163. [PMID: 33899912 DOI: 10.1042/cs20210049] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Revised: 04/16/2021] [Accepted: 04/26/2021] [Indexed: 02/07/2023]
Abstract
Compound 21 (C21), a selective agonist of angiotensin II type 2 receptor (AT2R), induces vasodilation through NO release. Since AT2R seems to be overexpressed in obesity, we hypothesize that C21 prevents the development of obesity-related vascular alterations. The main goal of the present study was to assess the effect of C21 on thoracic aorta endothelial function in a model of diet-induced obesity (DIO) and to elucidate the potential cross-talk among AT2R, Mas receptor (MasR) and/or bradykinin type 2 receptor (B2R) in this response. Five-week-old male C57BL6J mice were fed a standard (CHOW) or a high-fat diet (HF) for 6 weeks and treated daily with C21 (1 mg/kg p.o) or vehicle, generating four groups: CHOW-C, CHOW-C21, HF-C, HF-C21. Vascular reactivity experiments were performed in thoracic aorta rings. Human endothelial cells (HECs; EA.hy926) were used to elucidate the signaling pathways, both at receptor and intracellular levels. Arteries from HF mice exhibited increased contractions to Ang II than CHOW mice, effect that was prevented by C21. PD123177, A779 and HOE-140 (AT2R, Mas and B2R antagonists) significantly enhanced Ang II-induced contractions in CHOW but not in HF-C rings, suggesting a lack of functionality of those receptors in obesity. C21 prevented those alterations and favored the formation of AT2R/MasR and MasR/B2R heterodimers. HF mice also exhibited impaired relaxations to acetylcholine (ACh) due to a reduced NO availability. C21 preserved NO release through PKA/p-eNOS and AKT/p-eNOS signaling pathways. In conclusion, C21 favors the interaction among AT2R, MasR and B2R and prevents the development of obesity-induced endothelial dysfunction by stimulating NO release through PKA/p-eNOS and AKT/p-eNOS signaling pathways.
Collapse
MESH Headings
- Animals
- Aorta, Thoracic/drug effects
- Cyclic AMP-Dependent Protein Kinases/metabolism
- Diet, High-Fat
- Drug Evaluation, Preclinical
- Endothelium, Vascular/drug effects
- Human Umbilical Vein Endothelial Cells
- Humans
- Imidazoles/pharmacology
- Imidazoles/therapeutic use
- Male
- Mice, Inbred C57BL
- Nitric Oxide/metabolism
- Nitric Oxide Synthase Type III/metabolism
- Obesity/complications
- Obesity/metabolism
- Proto-Oncogene Mas
- Proto-Oncogene Proteins/metabolism
- Proto-Oncogene Proteins c-akt/metabolism
- Receptor Cross-Talk
- Receptor, Angiotensin, Type 2/agonists
- Receptor, Angiotensin, Type 2/metabolism
- Receptor, Bradykinin B2/metabolism
- Receptors, G-Protein-Coupled/metabolism
- Renin-Angiotensin System/drug effects
- Signal Transduction/drug effects
- Sulfonamides/pharmacology
- Sulfonamides/therapeutic use
- Thiophenes/pharmacology
- Thiophenes/therapeutic use
- Vascular Diseases/etiology
- Vascular Diseases/metabolism
- Vascular Diseases/prevention & control
- Mice
Collapse
Affiliation(s)
- Raquel González-Blázquez
- Departamento de Ciencias Farmacéuticas y de la Salud, Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Madrid 28925, Spain
| | - Martín Alcalá
- Departamento de Química y Bioquímica, Facultad de Farmacia, Universidad CEU-San Pablo, CEU Universities, Madrid 28925, Spain
| | - María S Fernández-Alfonso
- Instituto Pluridisciplinar, Unidad de Cartografía Cerebral, Universidad Complutense de Madrid, Madrid 28040, Spain
- Departamento de Farmacología, Facultad de Farmacia, Universidad Complutense de Madrid, Madrid 28040, Spain
| | - Ulrike Muscha Steckelings
- Department of Cardiovascular and Renal Research, Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - M Paz Lorenzo
- Departamento de Química y Bioquímica, Facultad de Farmacia, Universidad CEU-San Pablo, CEU Universities, Madrid 28925, Spain
| | - Marta Viana
- Departamento de Química y Bioquímica, Facultad de Farmacia, Universidad CEU-San Pablo, CEU Universities, Madrid 28925, Spain
| | - William A Boisvert
- Center for Cardiovascular Research, John A. Burns School of Medicine, University of Hawaii, 651 Ilalo Street, BSB311, Honolulu, HI 96813, U.S.A
- Institute of Fundamental Medicine and Biology, Kazan Federal University, 18 Kremlevskaya Str., Kazan 420008, Russia
| | - Thomas Unger
- CARIM - School for Cardiovascular Diseases, Maastricht University, Maastricht, The Netherlands
| | - Marta Gil-Ortega
- Departamento de Ciencias Farmacéuticas y de la Salud, Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Madrid 28925, Spain
| | - Beatriz Somoza
- Departamento de Ciencias Farmacéuticas y de la Salud, Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Madrid 28925, Spain
| |
Collapse
|
3
|
Obese Animals as Models for Numerous Diseases: Advantages and Applications. ACTA ACUST UNITED AC 2021; 57:medicina57050399. [PMID: 33919006 PMCID: PMC8142996 DOI: 10.3390/medicina57050399] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 04/16/2021] [Accepted: 04/20/2021] [Indexed: 02/07/2023]
Abstract
With the advances in obesity research, a variety of animal models have been developed to investigate obesity pathogenesis, development, therapies and complications. Such obese animals would not only allow us to explore obesity but would also represent models to study diseases and conditions that develop with obesity or where obesity represents a risk factor. Indeed, obese subjects, as well as animal models of obesity, develop pathologies such as cardiovascular diseases, diabetes, inflammation and metabolic disorders. Therefore, obese animals would represent models for numerous diseases. Although those diseases can be induced in animals by chemicals or drugs without obesity development, having them developed as consequences of obesity has numerous advantages. These advantages include mimicking natural pathogenesis processes, using diversity in obesity models (diet, animal species) to study the related variabilities and exploring disease intensity and reversibility depending on obesity development and treatments. Importantly, therapeutic implications and pharmacological tests represent key advantages too. On the other hand, obesity prevalence is continuously increasing, and, therefore, the likelihood of having a patient suffering simultaneously from obesity and a particular disease is increasing. Thus, studying diverse diseases in obese animals (either induced naturally or developed) would allow researchers to build a library of data related to the patterns or specificities of obese patients within the context of pathologies. This may lead to a new branch of medicine specifically dedicated to the diseases and care of obese patients, similar to geriatric medicine, which focuses on the elderly population.
Collapse
|
4
|
Shao J, Bai X, Pan T, Li Y, Jia X, Wang J, Lai S. Genome-Wide DNA Methylation Changes of Perirenal Adipose Tissue in Rabbits Fed a High-Fat Diet. Animals (Basel) 2020; 10:E2213. [PMID: 33255930 PMCID: PMC7761299 DOI: 10.3390/ani10122213] [Citation(s) in RCA: 4] [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: 11/03/2020] [Revised: 11/20/2020] [Accepted: 11/24/2020] [Indexed: 12/22/2022] Open
Abstract
DNA methylation is an epigenetic mechanism that plays an important role in gene regulation without an altered DNA sequence. Previous studies have demonstrated that diet affects obesity by partially mediating DNA methylation. Our study investigated the genome-wide DNA methylation of perirenal adipose tissue in rabbits to identify the epigenetic changes of high-fat diet-mediated obesity. Two libraries were constructed pooling DNA of rabbits fed a standard normal diet (SND) and DNA of rabbits fed a high-fat diet (HFD). Differentially methylated regions (DMRs) were identified using the option of the sliding window method, and online software DAVID Bioinformatics Resources 6.7 was used to perform Gene Ontology (GO) terms and KEGG (Kyoto Encyclopedia of Genes and Genomes) pathway enrichment analysis of DMRs-associated genes. A total of 12,230 DMRs were obtained, of which 2305 (1207 up-regulated, 1098 down-regulated) and 601 (368 up-regulated, 233 down-regulated) of identified DMRs were observed in the gene body and promoter regions, respectively. GO analysis revealed that the DMRs-associated genes were involved in developmental process (GO:0032502), cell differentiation (GO:0030154), and lipid binding (GO:0008289), and KEGG pathway enrichment analysis revealed the DMRs-associated genes were enriched in linoleic acid metabolism (KO00591), DNA replication (KO03030), and MAPK signaling pathway (KO04010). Our study further elucidates the possible functions of DMRs-associated genes in rabbit adipogenesis, contributing to the understanding of HFD-mediated obesity.
Collapse
Affiliation(s)
- Jiahao Shao
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (J.S.); (X.B.); (Y.L.); (X.J.); (J.W.)
| | - Xue Bai
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (J.S.); (X.B.); (Y.L.); (X.J.); (J.W.)
| | - Ting Pan
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China;
| | - Yanhong Li
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (J.S.); (X.B.); (Y.L.); (X.J.); (J.W.)
| | - Xianbo Jia
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (J.S.); (X.B.); (Y.L.); (X.J.); (J.W.)
| | - Jie Wang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (J.S.); (X.B.); (Y.L.); (X.J.); (J.W.)
| | - Songjia Lai
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (J.S.); (X.B.); (Y.L.); (X.J.); (J.W.)
| |
Collapse
|
5
|
Shao J, Wang J, Li Y, Elzo MA, Tang T, Lai T, Ma Y, Gan M, Wang L, Jia X, Lai S. Growth, behavioural, serum biochemical and morphological changes in female rabbits fed high-fat diet. J Anim Physiol Anim Nutr (Berl) 2020; 105:345-353. [PMID: 33038071 DOI: 10.1111/jpn.13459] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 07/23/2020] [Accepted: 09/03/2020] [Indexed: 12/26/2022]
Abstract
This study aimed to determine whether high-fat diet (HFD) could cause growth, behavioural, biochemical and morphological changes in young female rabbits. Thirty-six female rabbits were randomly divided into two groups fed with either a high-fat diet (HFD) or a standard normal diet (SND) for 5 weeks. Growth and behavioural changes were recorded during the 5-week feeding period. Tissue samples, including blood and adipose tissue, were obtained after slaughter. HFD rabbits weighed more by the end of the feeding period, had a higher percent body weight and adipose tissue weight change and had longer body and bust lengths than SND rabbits. HFD rabbits significantly reduced their feed intake and feeding frequency during the fourth and fifth weeks. HFD rabbits also showed lower frequency of drinking and resting and increased stereotypical behaviour. Besides, HFD rabbits showed significant physiological abnormalities. HFD rabbits had higher serum cholesterol (TC) and triglycerides (TG) levels than SND rabbits at the end of the feeding period, and higher free fatty acid (FFA) levels than rabbits in the SND group after the third week of feeding. Serum thyroxine (T4) increased significantly in week 2 and week 5 and triiodothyronine (T3) increased significantly in week four. However, there was no significant change in serum glucose (GLU) and insulin (INS) levels. Additionally, HFD reduced the area and diameter of perirenal and subcutaneous fat cells and increased their density. Our findings suggest that HFD rabbits had higher weight gains, accumulation of fat, and more behavioural changes than SND rabbits. Although high levels of fat in the diet had a low impact on hyperglycaemia, it could lead to hyperlipidemia and hyperthyroidism. Our results also suggest that sustained HFD may cause the proliferation of adipocytes in young female rabbits.
Collapse
Affiliation(s)
- Jiahao Shao
- College of Animal Science and Technology, Sichuan Agricultural University - Chengdu Campus, Chengdu, China
| | - Jie Wang
- College of Animal Science and Technology, Sichuan Agricultural University - Chengdu Campus, Chengdu, China
| | - Yanhong Li
- College of Animal Science and Technology, Sichuan Agricultural University - Chengdu Campus, Chengdu, China
| | - Mauricio A Elzo
- Department of Animal Science, University of Florida, Gainesville, FL, USA
| | - Tao Tang
- College of Animal Science and Technology, Sichuan Agricultural University - Chengdu Campus, Chengdu, China
| | - Tianfu Lai
- College of Animal Science and Technology, Sichuan Agricultural University - Chengdu Campus, Chengdu, China
| | - Yuan Ma
- College of Animal Science and Technology, Sichuan Agricultural University - Chengdu Campus, Chengdu, China
| | - Mingchuan Gan
- College of Animal Science and Technology, Sichuan Agricultural University - Chengdu Campus, Chengdu, China
| | - Li Wang
- College of Animal Science and Technology, Sichuan Agricultural University - Chengdu Campus, Chengdu, China
| | - Xianbo Jia
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University - Chengdu Campus, Chengdu, China
| | - Songjia Lai
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University - Chengdu Campus, Chengdu, China
| |
Collapse
|
6
|
Hormonal Blood Pressure Regulationduring General Anesthesia Usinga Standardized Propofol Dosagein Children and Adolescents SeemsNot to Be Affected by Body Weight. J Clin Med 2020; 9:jcm9072129. [PMID: 32640705 PMCID: PMC7408938 DOI: 10.3390/jcm9072129] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 06/29/2020] [Accepted: 07/03/2020] [Indexed: 12/15/2022] Open
Abstract
Obesity in pediatric surgical patients is a challenge for the anesthesiologist. Despite potentially beneficial properties, propofol might also induce hypotension. This study examined whether a dose adjustment in overweight children could avoid hypotension and if there would be differences regarding hormonal regulation in children under anesthesia. Fifty-nine children undergoing surgery under general anesthesia were enrolled in this prospective observational trial. Participants were allocated into two groups according to their BMI. The induction of anesthesia was conducted using propofol (“overweight”: 2 mg/kgBW, “regular”: 3.2 mg/kgBW). The maintenance of anesthesia was conducted as total intravenous anesthesia. Hormone levels of renin, angiotensin II, aldosterone, copeptin, norepinephrine and epinephrine were assessed at different timepoints. Blood pressure dropped after the administration of propofol in both groups, with a nadir 2 min after administration—but without a significant difference in the strength of reduction between the two groups. As a reaction, an increase in the plasma levels of renin, angiotensin and aldosterone was observed, while levels of epinephrine, norepinephrine and copeptin dropped. By adjusting the propofol dosage in overweight children, the rate of preincision hypotension could be reduced to the level of normal-weight patients with a non-modified propofol dose. The hormonal counter regulation was comparable in both groups. The release of catecholamines and copeptin as an indicator of arginine vasopressin seemed to be inhibited by propofol.
Collapse
|
7
|
Abstract
Obesity increases sympathetic nerve activity (SNA) in men, but not women. Here, we review current evidence suggesting that sexually dimorphic sympathoexcitatory responses to leptin and insulin may contribute. More specifically, while insulin increases SNA similarly in lean males and females, this response is markedly amplified in obese males, but is abolished in obese females. In lean female rats, leptin increases a subset of sympathetic nerves only during the high estrogen proestrus reproductive phase; thus, in obese females, because reproductive cycling can become impaired, the sporadic nature of leptin-induced sympathoexcitaton could minimize its action, despite elevated leptin levels. In contrast, in males, obesity preserves or enhances the central sympathoexcitatory response to leptin, and current evidence favors leptin’s contribution to the well-established increases in SNA induced by obesity in men. Leptin and insulin increase SNA via receptor binding in the hypothalamic arcuate nucleus and a neuropathway that includes arcuate neuropeptide Y (NPY) and proopiomelanocortin (POMC) projections to the paraventricular nucleus. These metabolic hormones normally suppress sympathoinhibitory NPY neurons and activate sympathoexcitatory POMC neurons. However, obesity appears to alter the ongoing activity and responsiveness of arcuate NPY and POMC neurons in a sexually dimorphic way, such that SNA increases in males but not females. We propose hypotheses to explain these sex differences and suggest areas of future research.
Collapse
Affiliation(s)
- Zhigang Shi
- Department of Physiology and Pharmacology, L-334, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd, Portland, OR, 97239, USA
| | - Jennifer Wong
- Department of Physiology and Pharmacology, L-334, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd, Portland, OR, 97239, USA
| | - Virginia L Brooks
- Department of Physiology and Pharmacology, L-334, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd, Portland, OR, 97239, USA.
| |
Collapse
|
8
|
Alula KM, Biltz R, Xu H, Garver H, Laimon-Thomson EL, Fink GD, Galligan JJ. Effects of high-fat diet on sympathetic neurotransmission in mesenteric arteries from Dahl salt-sensitive rat. Auton Neurosci 2019; 222:102599. [PMID: 31731103 DOI: 10.1016/j.autneu.2019.102599] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 10/18/2019] [Accepted: 10/29/2019] [Indexed: 12/19/2022]
Abstract
Obesity hypertension is driven by sympathetic neurotransmission to the heart and blood vessels. We tested the hypothesis that high-fat diet (HFD)-induced hypertension is driven by sympathetic neurotransmission to mesenteric arteries (MA) in male but not female Dahl salt-sensitive (Dahl ss) rat. Rats were fed a control diet (CD; 10 kcal% from fat) or HFD (60 kcal% from fat) beginning at 3 weeks (wk) of age; measurements were made at 10-, 17- and 24-wk. Body weight increased with HFD, age and sex. Mean arterial pressure (MAP) was higher in HFD versus CD rats from both sexes at 17- and 24-wk. MA constriction measured using pressure myography, and electrical field stimulation (EFS, 0.2-30 Hz) was greater in HFD versus CD in males at 17-wk; this was not due to changes in α2 autoreceptor or norepinephrine transporter (NET) function. Prazosin (α1-AR antagonist) and suramin (P2 receptor antagonist) inhibited neurogenic MA constriction equally in all groups. Arterial reactivity to exogenous norepinephrine (NE; 10-8 - 10-5 M) was lower in HFD versus CD at 10-wk in males. Female MA reactivity to exogenous ATP was lower at 24-weeks compared to earlier time points. HFD did not affect tyrosine hydroxylase (TH) or the vesicular nucleotide transporter (VNUT) nerve density in MA from both sexes. NE content was lower in MA but higher in plasma at 24-wk compared to 10- and 17-wk in both sexes. In conclusion, HFD-induced hypertension is not driven by increased sympathetic neurotransmission to MA in male and female Dahl ss rats.
Collapse
Affiliation(s)
- Kibrom M Alula
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, MI 48824, USA
| | - Rebecca Biltz
- The Neuroscience Program, Michigan State University, East Lansing, MI 48824, USA
| | - Hui Xu
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, MI 48824, USA; The Neuroscience Program, Michigan State University, East Lansing, MI 48824, USA
| | - Hannah Garver
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, MI 48824, USA
| | - Erinn L Laimon-Thomson
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, MI 48824, USA
| | - Gregory D Fink
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, MI 48824, USA; The Neuroscience Program, Michigan State University, East Lansing, MI 48824, USA
| | - James J Galligan
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, MI 48824, USA; The Neuroscience Program, Michigan State University, East Lansing, MI 48824, USA.
| |
Collapse
|
9
|
Cattaneo F, Roco J, Alarcón G, Isla MI, Jeréz S. Prosopis alba seed flour improves vascular function in a rabbit model of high fat diet-induced metabolic syndrome. Heliyon 2019; 5:e01967. [PMID: 31485494 PMCID: PMC6716065 DOI: 10.1016/j.heliyon.2019.e01967] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 05/03/2019] [Accepted: 06/13/2019] [Indexed: 12/13/2022] Open
Abstract
AIMS Prosopis alba flour is a natural source of nutrient and phytochemicals with potential effects on cardiovascular risk factors. The aim of this work was to examine the effects of dietary supplementation with Prosopis alba seed flour (Pr-Feed) on a high fat diet (FD)-induced rabbit model of metabolic syndrome. MAIN METHODS Rabbits were separated in four groups: fed regular diet (CD); CD supplemented with Pr-Feed; fed on 18 % FD; FD supplemented with Pr-Feed. All diets were administrated for 6 weeks. After the feeding period body weights, mean blood pressure, heart rate and visceral abdominal fat (VAF) were determined; glucose tolerance test (GTT) was performed; total cholesterol (TC), HDL-cholesterol, LDL-cholesterol, triglycerides (TG), fasting glucose (FG), aspartate amino transferase, alanine amino transferase, bilirubin and creatinine were measured in serum. Abdominal aorta was excised and vascular function was assessed by acetylcholine relaxation and contractile response to KCl, norepinephrine and angiotensin II. KEY FINDINGS Phytochemical analyses showed that the main compounds of Pr-Feed were apigenin C-glycosides. FD increased VAF, FG, TG, reduced HDL-cholesterol and induced abnormal GTT. Pr-Feed addition to FD did not modify these alterations. Aortic rings from rabbits fed on FD exhibited an impaired relaxation-response to acetylcholine and increased agonist vasoconstrictor responses. Pr Feed-supplemented FD improved the response to acetylcholine, and prevented the increase of the contractile response to KCl, norepinephrine and angiotensin II. SIGNIFICANCE Results suggest that dietary supplementation with Pr-Feed, rich in apigenin C-glycosides, has vascular protector properties and could be used to prevent vascular alterations characterizing the metabolic syndrome.
Collapse
Affiliation(s)
- Florencia Cattaneo
- Laboratorio de Investigación de Productos Naturales (LIPRON), Instituto de Bioprospección y fisiología vegetal (INBIOFIV-CONICET), Argentina
| | - Julieta Roco
- Instituto Superior de Investigaciones Biológicas(INSIBIO-CONICET-UNT), Argentina
| | - Gabriela Alarcón
- Instituto Superior de Investigaciones Biológicas(INSIBIO-CONICET-UNT), Argentina
| | - María Inés Isla
- Laboratorio de Investigación de Productos Naturales (LIPRON), Instituto de Bioprospección y fisiología vegetal (INBIOFIV-CONICET), Argentina
- Facultad de Ciencias Naturales e IML. Universidad Nacional de Tucumán, San Miguel de Tucumán, Tucumán, Argentina
| | - Susana Jeréz
- Instituto Superior de Investigaciones Biológicas(INSIBIO-CONICET-UNT), Argentina
- Facultad de Ciencias Naturales e IML. Universidad Nacional de Tucumán, San Miguel de Tucumán, Tucumán, Argentina
| |
Collapse
|
10
|
Rocha VDS, Claudio ERG, da Silva VL, Cordeiro JP, Domingos LF, da Cunha MRH, Mauad H, do Nascimento TB, Lima-Leopoldo AP, Leopoldo AS. High-Fat Diet-Induced Obesity Model Does Not Promote Endothelial Dysfunction via Increasing Leptin/Akt/eNOS Signaling. Front Physiol 2019; 10:268. [PMID: 30949067 PMCID: PMC6435481 DOI: 10.3389/fphys.2019.00268] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 02/28/2019] [Indexed: 12/23/2022] Open
Abstract
Experimental studies show that the unsaturated high-fat diet-induced obesity promotes vascular alterations characterized by improving the endothelial L-arginine/Nitric Oxide (NO) pathway. Leptin seems to be involved in this process, promoting vasodilation via increasing NO bioavailability. The aim of this study was to test the hypothesis that unsaturated high-fat diet-induced obesity does not generate endothelial dysfunction via increasing the vascular leptin/Akt/eNOS signaling. Thirty-day-old male Wistar rats were randomized into two groups: control (C) and obese (Ob). Group C was fed a standard diet, while group Ob was fed an unsaturated high-fat diet for 27 weeks. Adiposity, hormonal and biochemical parameters, and systolic blood pressure were observed. Concentration response curves were performed for leptin or acetylcholine in the presence or absence of Akt and NOS inhibitor. Our results showed that an unsaturated high-fat diet promoted a greater feed efficiency (FE), elevation of body weight and body fat (BF), and an adiposity index, characterizing a model of obesity. However, comorbidities frequently associated with experimental obesity were not visualized, such as glucose intolerance, dyslipidemia and hypertension. The evaluation of the endothelium-dependent relaxation with acetylcholine showed no differences between the C and Ob rats. After NOS inhibition, the response was completely abolished in the Ob group, but not in the C group. Furthermore, Akt inhibition completely blunted vascular relaxation in the C group, but not in the Ob group, which was more sensitive to leptin-induced vascular relaxation. L-NAME incubation abolished the relaxation in both groups at the same level. Although Akt inhibitor pre-incubation reduced the leptin response, group C was more sensitive to its effect. In conclusion, the high-unsaturated fat diet-induced obesity improved the vascular reactivity to leptin and does not generate endothelial dysfunction, possibly by the increase in the vascular sensitivity to leptin and increasing NO bioavailability. Moreover, our results suggest that the increase in NO production occurs through the increase in NOS activation by leptin and is partially mediated by the Akt pathway.
Collapse
Affiliation(s)
- Vanessa da Silva Rocha
- Physiology and Biochemistry Laboratory, Department of Sports, Center of Physical Education and Sports, Federal University of Espírito Santo, Vitória, Brazil
| | | | - Vitor Loureiro da Silva
- Physiology and Biochemistry Laboratory, Department of Sports, Center of Physical Education and Sports, Federal University of Espírito Santo, Vitória, Brazil
| | - Jóctan Pimentel Cordeiro
- Physiology and Biochemistry Laboratory, Department of Sports, Center of Physical Education and Sports, Federal University of Espírito Santo, Vitória, Brazil
| | - Lucas Furtado Domingos
- Physiology and Biochemistry Laboratory, Department of Sports, Center of Physical Education and Sports, Federal University of Espírito Santo, Vitória, Brazil
| | - Márcia Regina Holanda da Cunha
- Physiology and Biochemistry Laboratory, Department of Sports, Center of Physical Education and Sports, Federal University of Espírito Santo, Vitória, Brazil
| | - Helder Mauad
- Department of Physiological Sciences, Health Sciences Center, Federal University of Espírito Santo, Vitória, Brazil
| | | | - Ana Paula Lima-Leopoldo
- Physiology and Biochemistry Laboratory, Department of Sports, Center of Physical Education and Sports, Federal University of Espírito Santo, Vitória, Brazil
| | - André Soares Leopoldo
- Physiology and Biochemistry Laboratory, Department of Sports, Center of Physical Education and Sports, Federal University of Espírito Santo, Vitória, Brazil
| |
Collapse
|
11
|
Battault S, Meziat C, Nascimento A, Braud L, Gayrard S, Legros C, De Nardi F, Drai J, Cazorla O, Thireau J, Meyer G, Reboul C. Vascular endothelial function masks increased sympathetic vasopressor activity in rats with metabolic syndrome. Am J Physiol Heart Circ Physiol 2018; 314:H497-H507. [DOI: 10.1152/ajpheart.00217.2017] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Sylvain Battault
- Laboratoire de Pharm-Ecologie Cardiovasculaire, Avignon University, Avignon, France
| | - Cindy Meziat
- Laboratoire de Pharm-Ecologie Cardiovasculaire, Avignon University, Avignon, France
| | | | - Laura Braud
- EB2M-PROTEE, Université de Toulon, La Garde, France
| | - Sandrine Gayrard
- Laboratoire de Pharm-Ecologie Cardiovasculaire, Avignon University, Avignon, France
| | - Christian Legros
- Laboratoire de Biologie Neurovasculaire et Mitochondriale Intégrée, Université d'Angers, Angers, France
| | - Frederic De Nardi
- Laboratoire de Biologie Neurovasculaire et Mitochondriale Intégrée, Université d'Angers, Angers, France
| | - Jocelyne Drai
- Fédération de Biochimie, Unité de Biochimie Métabolique et Moléculaire, Centre Hospitalier Lyon-Sud, Pierre-Bénite, France
| | - Olivier Cazorla
- PhyMedExp, University of Montpellier, INSERM U1046, CNRS UMR 9214, Montpellier, France
| | - Jérôme Thireau
- PhyMedExp, University of Montpellier, INSERM U1046, CNRS UMR 9214, Montpellier, France
| | - Gregory Meyer
- Laboratoire de Pharm-Ecologie Cardiovasculaire, Avignon University, Avignon, France
| | - Cyril Reboul
- Laboratoire de Pharm-Ecologie Cardiovasculaire, Avignon University, Avignon, France
| |
Collapse
|
12
|
Mauricio MD, Serna E, Fernández-Murga ML, Portero J, Aldasoro M, Valles SL, Sanz Y, Vila JM. Bifidobacterium pseudocatenulatum CECT 7765 supplementation restores altered vascular function in an experimental model of obese mice. Int J Med Sci 2017; 14:444-451. [PMID: 28539820 PMCID: PMC5441036 DOI: 10.7150/ijms.18354] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Accepted: 01/30/2017] [Indexed: 01/01/2023] Open
Abstract
Aims.Bifidobacterium pseudocatenulatum CECT 7765 improves metabolic and immunological altered functions in high fat fed mice, however little is known about the effects of potential probiotics on vascular reactivity. The aim of the present study was to investigate the effects of a potential probiotic strain, Bifidobacterium pseudocatenulatum CECT 7765, on vascular response in obese mice. Methods. Aorta samples were obtained from mice, which were divided into three groups: a control group, receiving a standard diet; an obese group, receiving a high-fat diet; and an obese group receiving high-fat diet and a daily dose of B. pseudocatenulatum CECT 7765 by oral gavage. Aortic rings were suspended in organ baths for isometric recording of tension. mRNA expression of eNOS was evaluated by real-time polymerase chain reaction. Results. Contractions induced by KCl, noradrenaline and thromboxane analogue were 33%, 30% and 45% lower respectively in aortic rings from obese mice. Bifidobacteria administration reversed this effect. eNOS inhibition increased the response to noradrenaline in the three groups with a significant lower magnitude in aortic rings from obese mice receiving bifidobacteria supplement. Acetylcholine caused a greater vasodilation in aorta from obese group (46±3% for control and 69±4% for obese group; p<0.05) and bifidobacteria reversed it (57±5%). Response to sodium nitroprusside was displaced 2.9 times to the left in a parallel manner in obese group. Relaxation to sodium nitroprusside remained unchanged in the bifidobacteria fed group. There was about five-fold decreased mRNA expression of eNOS in aortic segments from the group receiving bifidobacteria. Conclusion.Bifidobacterium pseudocatenulatum CECT 7765 restores the obesity-induced altered vascular function mainly by reducing nitric oxide release.
Collapse
Affiliation(s)
- María D Mauricio
- Departamento de Fisiología, Universitat de Valencia, Valencia, Spain.,Fundación de Investigación del Hospital Clínico Universitario de Valencia/INCLIVA, Valencia, Spain
| | - Eva Serna
- Unidad Central de Investigación. Facultad de Medicina, Universitat de Valencia, Valencia, Spain
| | - María Leonor Fernández-Murga
- Microbial Ecology, Nutrition and Health Research Group, Institute of Agrochemistry and Food Technology, National Research Council (IATA-CSIC), Valencia, Spain
| | - Jesica Portero
- Unidad Central de Investigación. Facultad de Medicina, Universitat de Valencia, Valencia, Spain
| | - Martín Aldasoro
- Departamento de Fisiología, Universitat de Valencia, Valencia, Spain.,Fundación de Investigación del Hospital Clínico Universitario de Valencia/INCLIVA, Valencia, Spain
| | - Soraya L Valles
- Departamento de Fisiología, Universitat de Valencia, Valencia, Spain.,Fundación de Investigación del Hospital Clínico Universitario de Valencia/INCLIVA, Valencia, Spain
| | - Yolanda Sanz
- Microbial Ecology, Nutrition and Health Research Group, Institute of Agrochemistry and Food Technology, National Research Council (IATA-CSIC), Valencia, Spain
| | - José M Vila
- Departamento de Fisiología, Universitat de Valencia, Valencia, Spain.,Fundación de Investigación del Hospital Clínico Universitario de Valencia/INCLIVA, Valencia, Spain
| |
Collapse
|
13
|
Alarcón G, Roco J, Medina A, Van Nieuwenhove C, Medina M, Jerez S. Stearoyl-CoA desaturase indexes and n-6/n-3 fatty acids ratio as biomarkers of cardiometabolic risk factors in normal-weight rabbits fed high fat diets. J Biomed Sci 2016; 23:13. [PMID: 26792598 PMCID: PMC4719578 DOI: 10.1186/s12929-016-0235-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Accepted: 01/12/2016] [Indexed: 11/24/2022] Open
Abstract
Background Biomarkers for cardiometabolic risk (CMR) factors would be important tools to maximize the effectiveness of dietary interventions to prevent cardiovascular diseases. Thus, the aim of this work was to analyze stearoyl-CoA desaturase (SCD) indexes and n-6/n-3 fatty acids (FA) ratio as biomarkers of CMR induced by feeding rabbits on high fat diets (HFDs). Methods Rabbits were fed either regular diet or 18 % fat in regular diet (HFD) or 1 % cholesterol diet (HD) or diet containing 1 % cholesterol and 18 % fat (HFD-HD) during 6 weeks. Body weights (BW), blood pressure, visceral abdominal fat (VAF) and glucose tolerance test were determined. Total cholesterol (TC), low density lipoprotein-cholesterol (LDL-C), high density lipoprotein-cholesterol (HDL-C), triglycerides (TG), fasting glucose (FG), and FA levels from plasma were measured. SCD indexes were calculated as product/precursor ratios of individual FA. Results BW was similar in all diet groups. HD increased TC, LDL-C, HDL-C, and TG. HFD increased TG, VAF and FG, and decreased HDL-C. The addition of HFD to HD joined to dyslipidemia increased VAF and FG. SCD indexes were increased and n-6/n-3 was unchanged in HD. SCD indexes were reduced and n-6/n-3 FA ratio was increased in HFD and HFD-HD. CMR factors were correlated positively with n-6/n-3 FA ratio. Although VAF had a stronger correlation with n-6/n-3 FA ratio than with SCD indexes, VAF was associated independently to both markers. Conclusions HFD simulating lipid composition of the average Western-style diet induced experimental rabbit models of normal-weight metabolic syndrome (MS). SCD indexes and n-6/n-3 were modified according to the type of dietary fat. Considering that VAF and CMR factors appear to be stronger associated to n-6/n-3 FA ratio than to SCD indexes, n-6/n-3 FA ratio may be a better biomarker of MS and CMR in normal-weight subjects than SCD indexes.
Collapse
Affiliation(s)
- Gabriela Alarcón
- Instituto Superior de Investigaciones Biológicas (INSIBIO, UNT-CONICET), Av Independencia 1800, San Miguel de Tucumán, Tucumán, 4000, Argentina
| | - Julieta Roco
- Instituto Superior de Investigaciones Biológicas (INSIBIO, UNT-CONICET), Av Independencia 1800, San Miguel de Tucumán, Tucumán, 4000, Argentina
| | - Analia Medina
- Facultad de Ciencias Naturales e Instituto Miguel Lillo, Universidad Nacional de Tucumán (UNT), Miguel Lillo 205, San Miguel de Tucumán, Tucumán, 4000, Argentina
| | - Carina Van Nieuwenhove
- Facultad de Ciencias Naturales e Instituto Miguel Lillo, Universidad Nacional de Tucumán (UNT), Miguel Lillo 205, San Miguel de Tucumán, Tucumán, 4000, Argentina.,Centro de Referencias para Lactobacilos (CERELA, CONICET), Chacabuco 145, San Miguel de Tucumán, Tucumán, 4000, Argentina
| | - Mirta Medina
- Facultad de Ciencias Naturales e Instituto Miguel Lillo, Universidad Nacional de Tucumán (UNT), Miguel Lillo 205, San Miguel de Tucumán, Tucumán, 4000, Argentina
| | - Susana Jerez
- Instituto Superior de Investigaciones Biológicas (INSIBIO, UNT-CONICET), Av Independencia 1800, San Miguel de Tucumán, Tucumán, 4000, Argentina. .,Facultad de Ciencias Naturales e Instituto Miguel Lillo, Universidad Nacional de Tucumán (UNT), Miguel Lillo 205, San Miguel de Tucumán, Tucumán, 4000, Argentina.
| |
Collapse
|
14
|
Brooks VL, Shi Z, Holwerda SW, Fadel PJ. Obesity-induced increases in sympathetic nerve activity: sex matters. Auton Neurosci 2014; 187:18-26. [PMID: 25435000 DOI: 10.1016/j.autneu.2014.11.006] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Revised: 11/02/2014] [Accepted: 11/08/2014] [Indexed: 01/18/2023]
Abstract
Abundant evidence obtained largely from male human and animal subjects indicates that obesity increases sympathetic nerve activity (SNA), which contributes to hypertension development. However, recent studies that included women reported that the strong relationships between muscle SNA and waist circumference or body mass index (BMI) found in men are not present in overweight and obese women. A similar sex difference in the association between adiposity and hypertension development has been identified in animal models of obesity. In this brief review, we consider two possible mechanisms for this sex difference. First, visceral adiposity, leptin, insulin, and angiotensin II have been identified as potential culprits in obesity-induced sympathoexcitation in males. We explore if these factors wield the same impact in females. Second, we consider if sex differences in vascular reactivity to sympathetic activation contribute. Our survey of the literature suggests that premenopausal females may be able to resist obesity-induced sympathoexcitation and hypertension in part due to differences in adipose disposition as well as its muted inflammatory response and reduced production of pressor versus depressor components of the renin-angiotensin system. In addition, vascular responsiveness to increased SNA may be reduced. However, more importantly, we identify the urgent need for further study, not only of sex differences per se, but also of the mechanisms that may mediate these differences. This information is required not only to refine treatment options for obese premenopausal women but also to potentially reveal new therapeutic avenues in obese men and women.
Collapse
Affiliation(s)
- Virginia L Brooks
- Department of Physiology and Pharmacology, Oregon Health & Science University, Portland, OR 97239, United States.
| | - Zhigang Shi
- Department of Physiology and Pharmacology, Oregon Health & Science University, Portland, OR 97239, United States
| | - Seth W Holwerda
- Department of Medical Pharmacology and Physiology, Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO 65212, United States
| | - Paul J Fadel
- Department of Medical Pharmacology and Physiology, Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO 65212, United States
| |
Collapse
|
15
|
Teramura T, Sugimoto H, Frampton J, Kida Y, Nakano M, Kawakami M, Izumi H, Fukunaga N, Onodera Y, Takehara T, Fukuda K, Hosoi Y. Generation of embryonic stem cell lines from immature rabbit ovarian follicles. Stem Cells Dev 2013; 22:928-38. [PMID: 23072728 DOI: 10.1089/scd.2012.0300] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
In mammalian ovaries, many immature follicles remain after the dominant follicles undergo ovulation. Here we report the successful production of rabbit embryonic stem cells (ESCs) from oocytes produced by in vitro culture of immature follicles and subsequent in vitro maturation treatment. In total, we obtained 53 blastocysts from oocytes that received intracytoplasmic sperm injection followed by in vitro culture. Although only weak expression of POU5f1 was observed in the inner cell masses of in-vitro-cultured follicle-derived embryos, repeated careful cloning enabled establishment of 3 stable ESC lines. These ESC lines displayed the morphological characteristics of primed pluripotent stem cells. The ESC lines also expressed the pluripotent markers Nanog, POU5f1, and Sox2. Further, these ESCs could be differentiated into each of the 3 different germ layers both in vitro and in vivo. These results demonstrate that immature follicles from rabbits can be used to generate ESCs. Moreover, the use of rabbit oocytes as a cell source provides an experimental system that closely matches human reproductive and stem cell physiology.
Collapse
Affiliation(s)
- Takeshi Teramura
- Division of Cell Biology for Regenerative Medicine, Institute of Advanced Clinical Medicine, Kinki University Faculty of Medicine, Osaka, Japan.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|