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Segar JL, Grobe CC, Balapattabi K, Ritter ML, Reho JJ, Grobe JL. Dissociable effects of dietary sodium in early life upon somatic growth, fluid homeostasis, and spatial memory in mice of both sexes. Am J Physiol Regul Integr Comp Physiol 2021; 320:R438-R451. [PMID: 33439766 PMCID: PMC8238146 DOI: 10.1152/ajpregu.00281.2020] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 12/16/2020] [Accepted: 01/12/2021] [Indexed: 12/18/2022]
Abstract
Postnatal growth failure is a common morbidity for preterm infants and is associated with adverse neurodevelopmental outcomes. Although sodium (Na) deficiency early in life impairs somatic growth, its impact on neurocognitive functions has not been extensively studied. We hypothesized that Na deficiency during early life is sufficient to cause growth failure and program neurobehavioral impairments in later life. C57BL/6J mice were placed on low- (0.4), normal- (1.5), or high- (3 g/kg) Na chow at weaning (PD22) and continued on the diet for 3 wk (to PD40). Body composition and fluid distribution were determined serially by time-domain NMR and bioimpedance spectroscopy, and anxiety, learning, and memory were assessed using the elevated plus maze and Morris water maze paradigms in later adulthood (PD63-PD69). During the diet intervention, body mass gains were suppressed in the low- compared with normal- and high-Na groups despite similar caloric uptake rates across groups. Fat mass was reduced in males but not in females fed low-Na diet. Fat-free mass and hydration were significantly reduced in both males and females fed the low-Na diet, although rapidly corrected after return to normal diet. Measures of anxiety-like behavior and learning in adulthood were not affected by diet in either sex, yet memory performance was modified by a complex interaction between sex and early life Na intake. These data support the concepts that Na deficiency impairs growth and that the amount of Na intake which supports optimal somatic growth during early life may be insufficient to fully support neurocognitive development.
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Affiliation(s)
- Jeffrey L Segar
- Division of Neonatology, Department of Pediatrics, Medical College of Wisconsin, Milwaukee, Wisconsin
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Connie C Grobe
- Division of Neonatology, Department of Pediatrics, Medical College of Wisconsin, Milwaukee, Wisconsin
| | | | - McKenzie L Ritter
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - John J Reho
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin
- Comprehensive Rodent Metabolic Phenotyping Core, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Justin L Grobe
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin
- Comprehensive Rodent Metabolic Phenotyping Core, Medical College of Wisconsin, Milwaukee, Wisconsin
- Department of Biomedical Engineering, Medical College of Wisconsin, Milwaukee, Wisconsin
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, Wisconsin
- Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, Wisconsin
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2
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Negi PC, Sondhi S, Merwaha R, Asotra S. Prevalence and risk determinants of metabolic syndrome in obese worksite workers in hill city of Himachal Pradesh, India. Indian Heart J 2019; 71:45-51. [PMID: 31000182 PMCID: PMC6477127 DOI: 10.1016/j.ihj.2019.01.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Revised: 12/25/2018] [Accepted: 01/20/2019] [Indexed: 01/17/2023] Open
Abstract
OBJECTIVE We report prevalence and risk factors of metabolic syndrome (MS) in the obese workforce of organized sector in hill city of Himachal Pradesh (HP), India. METHODS The cross-sectional survey study of employees of organized sectors in Shimla city of HP, India, was conducted to collect data of demographics, health behavior, psychosocial factors, anthropometry, blood pressure, and blood chemistry to measure blood glucose and lipid profile in fasting state in 3004 employees using validated tools. Out of 3004 subjects screened, data of 418 subjects with body mass index of ≥30 are analyzed to estimate the prevalence of MS and its risk determinants. The association of demographics, health behavior, and psychosocial factors as the risk determinants were analyzed using multivariable logistic regression modeling. RESULTS MS was prevalent in 57.6% [95% confidence interval (CI): 52.8%-62.3%]. The central obesity (odds ratio: 10.6, 95% CI: 2.32-48.4) and consumption of frequent or daily alcohol (odds ratio: 1.94, 95% CI: 1.05-3.59),and extra salt (odds ratio: 3.34, 95% CI: 1.09-10.2) were independent risk factors for MS. The consumption of tobacco, vegetables, sugar-sweetened drinks, physical inactivity, and psychosocial factors had no significant association with MS in obese population. CONCLUSIONS MS is highly prevalent among obese employees of organized sector. The consumption of alcohol and extra salt were major behavioral risk factors for MS and therefore have important implications in behavioral modifications for prevention of MS among obese employees in organized sectors.
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Affiliation(s)
- P C Negi
- Chandar Kant Research Associate II MRU, IGMC Shimla, HP, India.
| | - Sachin Sondhi
- Chandar Kant Research Associate II MRU, IGMC Shimla, HP, India
| | - Rajeev Merwaha
- Chandar Kant Research Associate II MRU, IGMC Shimla, HP, India
| | - Sanjeev Asotra
- Chandar Kant Research Associate II MRU, IGMC Shimla, HP, India
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Brey CW, Akbari-Alavijeh S, Ling J, Sheagley J, Shaikh B, Al-Mohanna F, Wang Y, Gaugler R, Hashmi S. Salts and energy balance: A special role for dietary salts in metabolic syndrome. Clin Nutr 2018; 38:1971-1985. [PMID: 30446179 DOI: 10.1016/j.clnu.2018.10.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 10/20/2018] [Accepted: 10/28/2018] [Indexed: 01/01/2023]
Abstract
BACKGROUND Dietary salts sodium (Na+), potassium (K+), magnesium (Mg2+), and calcium (Ca2+) are important in metabolic diseases. Yet, we do not have sufficient understanding on the salts global molecular network in these diseases. In this systematic review we have pooled information to identify the general effect of salts on obesity, insulin resistance and hypertension. AIMS To assess the roles of salts in metabolic disorders by focusing on their individual effect and the network effect among these salts. METHODS We searched articles in PubMed, EMBASE and Google Scholar. We selected original laboratory research, systematic reviews, clinical trials, observational studies and epidemiological data that focused on dietary salts and followed the preferred reporting items for systematic review in designing the present systematic review. RESULTS From the initial search of 2898 studies we selected a total of 199 articles that met our inclusion criteria and data extraction. Alterations in metabolic pathways associated with the sensitivity of sodium, potassium, magnesium and calcium may lead to obesity, hypertension, and insulin resistance. We found that the results of most laboratory research, animal studies and clinical trials are coherent but some research outcome are either inconsistent or inconclusive. CONCLUSION Important of salts in metabolic disorder is evident. In order to assess the effects of dietary salts in metablic diseases, environmental factors, dietary habits, physical activity, and the microbiome, should be considered in any study. Although interest in this area of research continues to grow, the challenge is to integrate the action of these salts in metabolic syndrom.
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Affiliation(s)
| | - Safoura Akbari-Alavijeh
- Laboratory of Developmental Biology, Center for Vector Biology, Rutgers University, 180 Jones Avenue, New Brunswick, NJ, 08901, USA
| | - Jun Ling
- Department of Basic Sciences, Geisinger Commonwealth School of Medicine, 525 Pine Street, Scranton, PA, 18509, USA
| | - Jordan Sheagley
- Department of Basic Sciences, Geisinger Commonwealth School of Medicine, 525 Pine Street, Scranton, PA, 18509, USA
| | - Bilal Shaikh
- Laboratory of Developmental Biology, Center for Vector Biology, Rutgers University, 180 Jones Avenue, New Brunswick, NJ, 08901, USA
| | | | - Yi Wang
- Laboratory of Developmental Biology, Center for Vector Biology, Rutgers University, 180 Jones Avenue, New Brunswick, NJ, 08901, USA
| | - Randy Gaugler
- Laboratory of Developmental Biology, Center for Vector Biology, Rutgers University, 180 Jones Avenue, New Brunswick, NJ, 08901, USA
| | - Sarwar Hashmi
- Laboratory of Developmental Biology, Center for Vector Biology, Rutgers University, 180 Jones Avenue, New Brunswick, NJ, 08901, USA; Rutgers Center for Lipid Research, New Jersey Institute for Food, Nutrition, & Health, Rutgers University, USA.
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4
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Park YM, Kwock CK, Park S, Eicher-Miller HA, Yang YJ. An association of urinary sodium-potassium ratio with insulin resistance among Korean adults. Nutr Res Pract 2018; 12:443-448. [PMID: 30323912 PMCID: PMC6172169 DOI: 10.4162/nrp.2018.12.5.443] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Revised: 07/05/2018] [Accepted: 09/20/2018] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND/OBJECTIVES This study was conducted to investigate the effects of sodium-potassium ratio on insulin resistance and sensitivity in Korean adults. SUBJECTS/METHODS Subjects were 3,722 adults (1,632 men and 2,090 women) aged 40-69 years participating in the Korean genome and epidemiology study_Ansan and Ansung study. Insulin resistance was assessed using homeostasis model assessment of insulin resistance (HoMA-IR) and fasting insulin, and insulin sensitivity was assessed by using the quantitative insulin sensitivity check index (QUICKI). The 24-h urinary sodium and potassium excretion were estimated from spot urinary samples using the Tanaka formula. The generalized linear model was applied to determine the association between urinary sodium-potassium ratio and insulin resistance. RESULTS HoMA-IR (P-value = 0.029, P-trend = 0.008) and fasting insulin (P-value = 0.017, P-trend = 0.005) levels were positively associated with 24-h estimated urinary sodium-potassium ratio in the multivariable model. QUICKI was inversely associated with 24-h estimated urinary sodium-potassium ratio in all models (P-value = 0.0002, P-trend < 0.0001 in the multivariate model). CONCLUSION The present study suggests that high sodium-potassium ratio is related to high insulin resistance and low insulin sensitivity. Decreasing sodium intake and increasing potassium intake are important for maintaining insulin sensitivity. Further studies are needed to confirm these findings in longitudinal studies.
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Affiliation(s)
- Yeong Mi Park
- Department of Foods and Nutrition, Dongduk Women's University, 60, Hwarang-ro 13-gil, Seongbuk-gu, Seoul 02748, Korea
| | - Chang Keun Kwock
- Nutrition and Diet Research Group, Korea Food Research Institute, Jeonbuk 55365, Korea
| | - Seyeon Park
- Department of Applied Chemistry, Dongduk Women's University, Seoul 02748, Korea
| | - Heather A Eicher-Miller
- Department of Nutrition Science, Purdue University, 700 W. State Street, West Lafayette, IN 47907, USA
| | - Yoon Jung Yang
- Department of Foods and Nutrition, Dongduk Women's University, 60, Hwarang-ro 13-gil, Seongbuk-gu, Seoul 02748, Korea.,Department of Nutrition Science, Purdue University, 700 W. State Street, West Lafayette, IN 47907, USA
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5
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Silva MS, Lúcio-Oliveira F, Mecawi AS, Almeida LF, Ruginsk SG, Greenwood MP, Greenwood M, Vivas L, Elias LLK, Murphy D, Antunes-Rodrigues J. Increased exposure to sodium during pregnancy and lactation changes basal and induced behavioral and neuroendocrine responses in adult male offspring. Physiol Rep 2017; 5:5/6/e13210. [PMID: 28336818 PMCID: PMC5371570 DOI: 10.14814/phy2.13210] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 02/20/2017] [Indexed: 12/24/2022] Open
Abstract
Excessive sodium (Na+) intake in modern society has been associated with several chronic disorders such as hypertension. Several studies suggest that early life events can program physiological systems and lead to functional changes in adulthood. Therefore, we investigated behavioral and neuroendocrine responses under basal conditions and after 48 h of water deprivation in adult (60‐day‐old Wistar rats) male, Wistar rats originating from dams were offered only water or 0.15 mol/L NaCl during pregnancy and lactation. Early life salt exposure induced kidney damage, as shown by a higher number of ED‐1 positive cells (macrophages/monocytes), increased daily urinary volume and Na+ excretion, blunted basal water intake and plasma oxytocin levels, and increased plasma corticosterone secretion. When challenged with water deprivation, animals exposed to 0.15 mol/L NaCl during early life showed impaired water intake, reduced salt preference ratio, and vasopressin (AVP) secretion. In summary, our data demonstrate that the perinatal exposure to excessive Na+ intake can induce kidney injury in adult offspring and significantly affect the key mechanisms regulating water balance, fluid intake, and AVP release in response to water deprivation. Collectively, these novel results highlight the impact of perinatal programming on the homeostatic mechanisms regulating fluid and electrolyte balance during exposure to an environmental stress (i.e. dehydration) in later life.
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Affiliation(s)
- Marcia S Silva
- Department of Physiology, School of Medicine of Ribeirao Preto University of Sao Paulo, Ribeirao Preto, São Paulo, Brazil
| | - Fabiana Lúcio-Oliveira
- Department of Physiology, School of Medicine of Ribeirao Preto University of Sao Paulo, Ribeirao Preto, São Paulo, Brazil
| | - Andre Souza Mecawi
- Department of Physiology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia.,Department of Physiological Sciences, Institute of Biology Federal Rural University of Rio de Janeiro, Rio de Janeiro, Seropedica, Brazil
| | - Lucas F Almeida
- Department of Physiology, School of Medicine of Ribeirao Preto University of Sao Paulo, Ribeirao Preto, São Paulo, Brazil
| | - Silvia G Ruginsk
- Departament of Physiological Sciences, Biomedical Sciences Institute, Federal University of Alfenas, Alfenas, Minas Gerais, Brazil
| | | | - Mingkwan Greenwood
- School of Clinical Sciences, University of Bristol, Bristol, United Kingdom
| | - Laura Vivas
- Instituto de Investigación Médica Mercedes y Martín Ferreyra (INIMEC-CONICET) Universidad Nacional de Córdoba, Córdoba, Argentina.,Facultad de Ciencias Exactas Físicas y Naturales Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Lucila L K Elias
- Department of Physiology, School of Medicine of Ribeirao Preto University of Sao Paulo, Ribeirao Preto, São Paulo, Brazil
| | - David Murphy
- Department of Physiology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia.,Department of Physiological Sciences, Institute of Biology Federal Rural University of Rio de Janeiro, Rio de Janeiro, Seropedica, Brazil
| | - José Antunes-Rodrigues
- Department of Physiology, School of Medicine of Ribeirao Preto University of Sao Paulo, Ribeirao Preto, São Paulo, Brazil
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6
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Maternal periodontitis decreases plasma membrane GLUT4 content in skeletal muscle of adult offspring. Life Sci 2016; 148:194-200. [DOI: 10.1016/j.lfs.2016.02.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Revised: 02/04/2016] [Accepted: 02/04/2016] [Indexed: 02/07/2023]
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Oh H, Lee HY, Jun DW, Lee SM. Low Salt Diet and Insulin Resistance. Clin Nutr Res 2016; 5:1-6. [PMID: 26839871 PMCID: PMC4731857 DOI: 10.7762/cnr.2016.5.1.1] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Revised: 01/23/2016] [Accepted: 01/27/2016] [Indexed: 11/19/2022] Open
Abstract
It is well known that high sodium intake is closely associated with the risk of cardiovascular disease, but the effect of low sodium intake on insulin resistance is not clear. In this article, we summarize findings from previous studies focusing on the association between low sodium intake and insulin resistance. While many investigations on this topic have been conducted actively, their major findings are inconsistent, partly due to different study designs. Thus, additional randomized controlled trials with an adequate study period and reasonable levels of low sodium intake are needed.
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Affiliation(s)
- Hyunwoo Oh
- Department of Internal Medicine, Hanyang University College of Medicine, Seoul 04763, Korea
| | - Hyo Young Lee
- Department of Internal Medicine, Hanyang University College of Medicine, Seoul 04763, Korea
| | - Dae Won Jun
- Department of Internal Medicine, Hanyang University College of Medicine, Seoul 04763, Korea
| | - Seung Min Lee
- Department of Food and Nutrition, Sungshin Women's University, Seoul 01133, Korea
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8
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Sakuyama H, Katoh M, Wakabayashi H, Zulli A, Kruzliak P, Uehara Y. Influence of gestational salt restriction in fetal growth and in development of diseases in adulthood. J Biomed Sci 2016; 23:12. [PMID: 26787358 PMCID: PMC4719732 DOI: 10.1186/s12929-016-0233-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Accepted: 01/12/2016] [Indexed: 02/07/2023] Open
Abstract
Recent studies reported the critical role of the intrauterine environment of a fetus in growth or the development of disease in adulthood. In this article we discussed the implications of salt restriction in growth of a fetus and the development of growth-related disease in adulthood. Salt restriction causes retardation of fatal growth or intrauterine death thereby leading to low birth weight or decreased birth rate. Such retardation of growth along with the upregulation of the renin angiotensin system due to salt restriction results in the underdevelopment of cardiovascular organs or decreases the number of the nephron in the kidney and is responsible for onset of hypertension in adulthood. In addition, gestational salt restriction is associated with salt craving after weaning. Moreover, salt restriction is associated with a decrease in insulin sensitivity. A series of alterations in metabolism due to salt restriction are probably mediated by the upregulation of the renin angiotensin system and an epigenetic mechanism including proinflammatory substances or histone methylation. Part of the metabolic disease in adulthood may be programmed through such epigenetic changes. The modification of gene in a fetus may be switched on through environment factors or life style after birth. The benefits of salt restriction have been assumed thus far; however, more precise investigation is required of its influence on the health of fetuses and the onset of various diseases in adulthood.
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Affiliation(s)
- Hiroe Sakuyama
- Division of Clinical Nutrition, Faculty of Home Economics, Kyoritsu Women's University, 2-2-1 Hitotsubashi, Chiyoda, Tokyo, 101-8437, Japan
| | - Minami Katoh
- Division of Clinical Nutrition, Faculty of Home Economics, Kyoritsu Women's University, 2-2-1 Hitotsubashi, Chiyoda, Tokyo, 101-8437, Japan
| | - Honoka Wakabayashi
- Division of Clinical Nutrition, Faculty of Home Economics, Kyoritsu Women's University, 2-2-1 Hitotsubashi, Chiyoda, Tokyo, 101-8437, Japan
| | - Anthony Zulli
- The Centre for Chronic Disease Prevention & Management (CCDPM), Western CHRE, Victoria University, St Albans, Australia
| | - Peter Kruzliak
- 2nd Department of Internal Medicine, Faculty of Medicine, Masaryk University, Pekarska 53, 656 91, Brno, Czech Republic.
- Laboratory of Structural Biology and Proteomics, Central Laboratories, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic.
| | - Yoshio Uehara
- Division of Clinical Nutrition, Faculty of Home Economics, Kyoritsu Women's University, 2-2-1 Hitotsubashi, Chiyoda, Tokyo, 101-8437, Japan.
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Glucose metabolism and hepatic Igf1 DNA methylation are altered in the offspring of dams fed a low-salt diet during pregnancy. Physiol Behav 2015; 154:68-75. [PMID: 26596702 DOI: 10.1016/j.physbeh.2015.11.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Revised: 11/10/2015] [Accepted: 11/17/2015] [Indexed: 01/28/2023]
Abstract
A low-salt (LS) diet during pregnancy has been linked to insulin resistance in adult offspring, at least in the experimental setting. However, it remains unclear if this effect is due to salt restriction during early or late pregnancy. To better understand this phenomenon, 12-week-old female Wistar rats were fed a LS or normal-salt (NS) diet during gestation or a LS diet during either the first (LS10) or second (LS20) half of gestation. Glucose tolerance test, HOMA-IR, gene expression analysis and DNA methylation measurements were conducted for the Insr, Igf1, Igf1r, Ins1 and Ins2 genes in the livers of neonates and in the liver, white adipose tissue and muscle of 20-week-old male offspring. Birth weight was lower in the LS20 and LS animals compared with the NS and LS10 rats. In the liver, the Igf1 levels in the LS10, LS20 and LS neonates were lower than those in the NS neonates. Methylation of the Insr, Igf1r, Ins1 and Ins2 genes was influenced in a variable manner by low salt intake during pregnancy. Increased liver Igf1 methylation was observed in the LS and LS20 neonates compared with their NS and LS10 counterparts. Glucose intolerance was observed in adult offspring as an effect of low salt intake over the duration of pregnancy. Compared to the NS animals, the HOMA-IR was higher in the 12-week-old LS and 20-week-old LS-10 rats. Based on these results, it appears that the reason a LS diet during pregnancy induces a low birth weight is its negative correlation with Igf1 DNA methylation in neonates.
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Gois PHF, Canale D, Luchi WM, Volpini RA, Veras MM, Costa NDSX, Shimizu MHM, Seguro AC. Tenofovir during pregnancy in rats: a novel pathway for programmed hypertension in the offspring. J Antimicrob Chemother 2014; 70:1094-105. [PMID: 25492393 DOI: 10.1093/jac/dku483] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
OBJECTIVES To evaluate the occurrence of systemic and renal abnormalities in the offspring of Wistar rats exposed to tenofovir disoproxil fumarate (DF) during pregnancy. METHODS Female Wistar rats received a standard diet, with or without addition of tenofovir DF (100 mg/kg diet), 1 week before mating and during pregnancy. Offspring from the tenofovir DF group were placed with an untreated foster mother during breastfeeding and compared with offspring from rats maintained on a standard diet during mating and pregnancy (control). Control and tenofovir DF were followed up at 3 and 6 months of age. Monthly body weight and systolic blood pressure (SBP), glomerular counts, renal function, biochemical parameters, angiotensin II, renal renin angiotensin aldosterone system (RAAS) and renal sodium transporters were analysed. RESULTS Tenofovir DF offspring showed lower birth weight compared with the control group. After the third month, growth among the tenofovir DF group experienced a rapid catch-up. SBP increased progressively after the second month of age in the tenofovir DF group. Nephron number did not differ between the groups; however, the tenofovir DF group showed glomerular structural changes. Plasma aldosterone was higher in the tenofovir DF group, associated with a significant increase in renal expression of RAAS. The tenofovir DF rats showed up-regulation of renal sodium transporters and consequently lower urinary sodium excretion. CONCLUSIONS This is the first demonstration using an experimental model that maternal exposure to tenofovir DF during gestation results in overactivation of RAAS, up-regulation of renal sodium transporters and hypertension in the offspring.
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Affiliation(s)
- Pedro Henrique França Gois
- Laboratory for Medical Research-LIM12, Nephrology Department, University of São Paulo School of Medicine, São Paulo, Brazil
| | - Daniele Canale
- Laboratory for Medical Research-LIM12, Nephrology Department, University of São Paulo School of Medicine, São Paulo, Brazil
| | - Weverton Machado Luchi
- Laboratory for Medical Research-LIM12, Nephrology Department, University of São Paulo School of Medicine, São Paulo, Brazil
| | - Rildo Aparecido Volpini
- Laboratory for Medical Research-LIM12, Nephrology Department, University of São Paulo School of Medicine, São Paulo, Brazil
| | - Mariana Matera Veras
- Laboratory of Experimental Air Pollution-LIM05, Department of Pathology, University of Sao Paulo School of Medicine, Sao Paulo, Brazil
| | - Natália de Souza Xavier Costa
- Laboratory of Experimental Air Pollution-LIM05, Department of Pathology, University of Sao Paulo School of Medicine, Sao Paulo, Brazil
| | - Maria Heloisa Massola Shimizu
- Laboratory for Medical Research-LIM12, Nephrology Department, University of São Paulo School of Medicine, São Paulo, Brazil
| | - Antonio Carlos Seguro
- Laboratory for Medical Research-LIM12, Nephrology Department, University of São Paulo School of Medicine, São Paulo, Brazil
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Low-Salt Intake during Mating or Gestation in Rats Is Associated with Low Birth and Survival Rates of Babies. J Nutr Metab 2014; 2014:212089. [PMID: 25197564 PMCID: PMC4150484 DOI: 10.1155/2014/212089] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Revised: 07/14/2014] [Accepted: 07/28/2014] [Indexed: 11/18/2022] Open
Abstract
We investigated the influence of maternal salt restriction during mating or gestation on birth rate and offspring growth in Dahl salt-sensitive rats (DS). DS were divided into 5 groups: DS fed a low-salt (0.3% NaCl, w/w) (DS-low) or high-salt (4% NaCl, w/w) diet (DS-high) during mating and DS-high or DS-low during gestation, and DS fed regular chow (0.75% NaCl, w/w) (DS-regular) throughout mating and gestation. During the unspecified periods, the rats were given regular chow. DS-low during mating delivered fewer infants than high-salt mothers (P < 0.05). The birth rate on regular chow was 87%. Six out of 11 DS-low rats during pregnancy produced pups while the rats fed a high-salt diet all delivered pups (P < 0.025). The pup survival rate was 67% for high-salt mothers during mating and 54% for mothers on a low-salt diet. The pup survival rate was 95% for mothers on a high-salt diet during pregnancy and 64% for mothers on a low-salt diet (P < 0.0001). Seven out of 8 DS-regular rats during mating delivered 59 neonates. However, 66% of the neonates survived. A low-salt diet during mating or pregnancy lowers birth rate and the neonates from low-salt mothers during pregnancy were more likely to die than those from high-salt mothers.
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Hara A, Chow R, Du DD, Sakuyama H, Uehara Y. Low Salt Diet in Pregnant Mothers Is Associated with Enhanced Salt Appetite in Their Offspring of Dahl Salt-Sensitive Rats. ACTA ACUST UNITED AC 2014. [DOI: 10.4236/fns.2014.519202] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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13
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Maternal protein restriction during pregnancy affects gene expression and immunolocalization of intestinal nutrient transporters in rats. Clin Sci (Lond) 2013; 125:281-9. [DOI: 10.1042/cs20120400] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Intrauterine dietary restriction may cause changes in the functioning of offspring organs and systems later in life, an effect known as fetal programming. The present study evaluated mRNA abundance and immunolocalization of nutrient transporters as well as enterocytes proliferation in the proximal, median and distal segments of small intestine of rats born to protein-restricted dams. Pregnant rats were fed hypoproteic (6% protein) or control (17% protein) diets, and offspring rats were evaluated at 3 and 16 weeks of age. The presence of SGLT1 (sodium–glucose co-transporter 1), GLUT2 (glucose transporter 2), PEPT1 (peptide transporter 1) and the intestinal proliferation were evaluated by immunohistochemical techniques and the abundance of specific mRNA for SGLT1, GLUT2 and PEPT1 was assessed by the real-time PCR technique. Rats born to protein-restricted dams showed higher cell proliferation in all intestinal segments and higher gene expression of SGLT1 and PEPT1 in the duodenum. Moreover, in adult animals born to protein-restricted dams the immunoreactivity of SGLT1, GLUT2 and PEPT1in the duodenum was more intense than in control rats. Taken together, the results indicate that changes in the small intestine observed in adulthood can be programmed during the gestation. In addition, they show that this response is caused by both up-regulation in transporter gene expression, a specific adaptation mechanism, and intestinal proliferation, an unspecific adaptation mechanism.
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Alves-Rodrigues EN, Veras MM, Rosa KT, de Castro I, Furukawa LNS, Oliveira IB, Souza RM, Heimann JC. Salt intake during pregnancy alters offspring's myocardial structure. Nutr Metab Cardiovasc Dis 2013; 23:481-486. [PMID: 22397882 DOI: 10.1016/j.numecd.2011.10.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2011] [Revised: 09/06/2011] [Accepted: 10/20/2011] [Indexed: 10/28/2022]
Abstract
BACKGROUND AND AIM To evaluate the effects of low or high salt intake during pregnancy on left ventricle of adult male offspring. METHODS AND RESULTS Low- (LS, 0.15%), normal- (NS, 1.3%) or high-salt (HS, 8% NaCl) diet was given to Wistar rats during pregnancy. During lactation all dams received NS as well as the offspring after weaning. To evaluate cardiac response to salt overload, 50% of each offspring group was fed a high-salt (hs, 4% NaCl) diet from the 21st to the 36th week of age (LShs, NShs, HShs). The remaining 50% was maintained on NS (LSns, NSns and HSns). Echocardiography was done at 20 and 30 weeks of age. Mean blood pressure (MBP), histology and left ventricular angiotensin II content (AII) were analyzed at 36 weeks of age. Interventricular septum, left ventricular posterior wall and relative wall thickness increased from the 20th to the 30th week of age only in HShs, cardiomyocyte mean volume was higher in HShs compared to NShs, LShs and HSns. AII and left ventricular fibrosis were not different among groups. CONCLUSIONS HS during pregnancy programs adult male offspring to a blood pressure and angiotensin II independent concentric left ventricular hypertrophy, with no fibrosis, in response to a chronic high-salt intake.
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Affiliation(s)
- E N Alves-Rodrigues
- Laboratory of Experimental Hypertension, University of São Paulo School of Medicine, São Paulo, Brazil
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15
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Song HJ, Cho YG, Lee HJ. Dietary sodium intake and prevalence of overweight in adults. Metabolism 2013; 62:703-8. [PMID: 23357528 DOI: 10.1016/j.metabol.2012.11.009] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2012] [Revised: 11/26/2012] [Accepted: 11/28/2012] [Indexed: 12/20/2022]
Abstract
OBJECTIVE There has been no convincing evidence for a direct relation between sodium intake and being overweight. Therefore, we investigated the independent relationship between overweight and sodium intake in human subjects. METHODS Of those aged 19 to 64 years who participated in the 4th Korea National Health and Nutrition Examination Survey, a total of 5955 participants (54% female) were included. Subjects were excluded if they reported unrealistic daily total energy intakes or intentional dietary changes, were pregnant, or were diagnosed with hypertension, diabetes, renal failure, liver cirrhosis, or thyroid disease. Overweight was defined as having a body mass index of 25 kg/m(2) or higher. Sodium intake was calculated from 24-h recall and categorized into quintiles. Multivariate logistic regression was used to test the relationship between sodium intake and being overweight. RESULTS Compared to men in the lowest quintile, men in the 4th and 5th quintiles had an increased risk of being overweight with odds ratios (ORs) of 1.37 (95% confidence interval [CI], 1.02-1.82) and 1.67 (95% CI, 1.23-2.27) respectively, after adjusting for confounding factors including soft drink and energy intake. The P value for trend of ORs in each quintile for men was 0.0033. In women, compared to the lowest quintile, the highest quintile had an OR of 1.31(95% CI, 0.96-1.79) and showed a marginally significant trend towards increasing risk of being overweight (P value=.058). CONCLUSIONS Our findings suggest an independent relationship between high sodium intake and an increased risk of being overweight in adults.
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Affiliation(s)
- Hong Ji Song
- Department of Family Medicine, Hallym Sacred Heart Hospital, College of Medicine, Hallym University, Anyang, Korea
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16
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Pinheiro D, Pacheco P, Alvarenga P, Buratini J, Castilho A, Lima P, Sartori D, Vicentini-Paulino M. Maternal protein restriction affects gene expression and enzyme activity of intestinal disaccharidases in adult rat offspring. Braz J Med Biol Res 2013; 46:287-92. [PMID: 23532268 PMCID: PMC3854379 DOI: 10.1590/1414-431x20122561] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2012] [Accepted: 12/03/2012] [Indexed: 12/19/2022] Open
Abstract
This study investigated the consequences of intrauterine protein restriction on the gastrointestinal tract and particularly on the gene expression and activity of intestinal disaccharidases in the adult offspring. Wistar rat dams were fed isocaloric diets containing 6% protein (restricted, n = 8) or 17% protein (control, n = 8) throughout gestation. Male offspring (n = 5-8 in each group) were evaluated at 3 or 16 weeks of age. Maternal protein restriction during pregnancy produced offspring with growth restriction from birth (5.7 ± 0.1 vs 6.3 ± 0.1 g; mean ± SE) to weaning (42.4 ± 1.3 vs 49.1 ± 1.6 g), although at 16 weeks of age their body weight was similar to control (421.7 ± 8.9 and 428.5 ± 8.5 g). Maternal protein restriction also increased lactase activity in the proximal (0.23 ± 0.02 vs 0.15 ± 0.02), medial (0.30 ± 0.06 vs 0.14 ± 0.01) and distal (0.43 ± 0.07 vs 0.07 ± 0.02 U·g-1·min-1) small intestine, and mRNA lactase abundance in the proximal intestine (7.96 ± 1.11 vs 2.38 ± 0.47 relative units) of 3-week-old offspring rats. In addition, maternal protein restriction increased sucrase activity (1.20 ± 0.02 vs 0.91 ± 0.02 U·g-1·min-1) and sucrase mRNA abundance (4.48 ± 0.51 vs 1.95 ± 0.17 relative units) in the duodenum of 16-week-old rats. In conclusion, the present study shows for the first time that intrauterine protein restriction affects gene expression of intestinal enzymes in offspring.
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Affiliation(s)
- D.F. Pinheiro
- Departamento de Fisiologia, Instituto de Biociências, Universidade
Estadual Paulista, Botucatu, SP, Brasil
| | - P.D.G. Pacheco
- Departamento de Fisiologia, Instituto de Biociências, Universidade
Estadual Paulista, Botucatu, SP, Brasil
| | - P.V. Alvarenga
- Departamento de Fisiologia, Instituto de Biociências, Universidade
Estadual Paulista, Botucatu, SP, Brasil
| | - J. Buratini
- Departamento de Fisiologia, Instituto de Biociências, Universidade
Estadual Paulista, Botucatu, SP, Brasil
| | - A.C.S. Castilho
- Departamento de Fisiologia, Instituto de Biociências, Universidade
Estadual Paulista, Botucatu, SP, Brasil
| | - P.F. Lima
- Departamento de Fisiologia, Instituto de Biociências, Universidade
Estadual Paulista, Botucatu, SP, Brasil
| | - D.R.S. Sartori
- Departamento de Fisiologia, Instituto de Biociências, Universidade
Estadual Paulista, Botucatu, SP, Brasil
| | - M.L.M. Vicentini-Paulino
- Departamento de Fisiologia, Instituto de Biociências, Universidade
Estadual Paulista, Botucatu, SP, Brasil
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Piecha G, Koleganova N, Ritz E, Müller A, Fedorova OV, Bagrov AY, Lutz D, Schirmacher P, Gross-Weissmann ML. High salt intake causes adverse fetal programming--vascular effects beyond blood pressure. Nephrol Dial Transplant 2012; 27:3464-76. [PMID: 22431707 DOI: 10.1093/ndt/gfs027] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND High salt intake causes hypertension, adverse cardiovascular outcomes and potentially also blood pressure (BP)-independent target organ damage. Excess salt intake in pregnancy is known to affect BP in the offspring. The present study was designed to assess whether high salt intake in pregnancy affects BP and vascular morphology in the offspring. METHODS Sprague-Dawley rats were fed a standard rodent diet with low-normal (0.15%) or high (8.0%) salt content during pregnancy and lactation. After weaning at 4 weeks of age, offspring were maintained on the same diet or switched to a high- or low-salt diet, respectively. Vascular geometry was assessed in male offspring at 7 and 12 weeks postnatally. RESULTS Up to 12 weeks of age, there was no significant difference in telemetrically measured BP between the groups of offspring. At 12 weeks of age, wall thickness of central (aorta, carotid), muscular (mesenteric) and intrapulmonary arteries was significantly higher in offspring of mothers on a high-salt diet irrespective of the post-weaning diet. This correlated with increased fibrosis of the aortic wall, more intense nitrotyrosine staining as well as elevated levels of marinobufagenin (MBG) and asymmetric dimethyl arginine (ADMA). CONCLUSIONS High salt intake in pregnant rats has long-lasting effects on the modeling of central and muscular arteries in the offspring independent of postnatal salt intake and BP. Circulating MBG and ADMA and local oxidative stress correlate with the adverse vascular modeling.
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Affiliation(s)
- Grzegorz Piecha
- Department of Internal Medicine, University of Heidelberg, Heidelberg, Germany.
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Koleganova N, Piecha G, Ritz E, Becker LE, Müller A, Weckbach M, Nyengaard JR, Schirmacher P, Gross-Weissmann ML. Both high and low maternal salt intake in pregnancy alter kidney development in the offspring. Am J Physiol Renal Physiol 2011; 301:F344-54. [PMID: 21593188 DOI: 10.1152/ajprenal.00626.2010] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
In humans, low glomerular numbers are related to hypertension, cardiovascular, and renal disease in adult life. The present study was designed 1) to explore whether above- or below-normal dietary salt intake during pregnancy influences nephron number and blood pressure in the offspring and 2) to identify potential mechanisms in kidney development modified by maternal sodium intake. Sprague-Dawley rats were fed low (0.07%)-, intermediate (0.51%)-, or high (3.0%)-sodium diets during pregnancy and lactation. The offspring were weaned at 4 wk and subsequently kept on a 0.51% sodium diet. The kidney structure was assessed at postnatal weeks 1 and 12 and the expression of proteins of interest at term and at week 1. Blood pressure was measured in male offspring by telemetry from postnatal month 2 to postnatal month 9. The numbers of glomeruli at weeks 1 and 12 were significantly lower and, in males, telemetrically measured mean arterial blood pressure after month 5 was higher in offspring of dams on a high- or low- compared with intermediate-sodium diet. A high-salt diet was paralleled by higher concentrations of marinobufagenin in the amniotic fluid and an increase in the expression of both sprouty-1 and glial cell-derived neutrophic factor in the offspring's kidney. The expression of FGF-10 was lower in offspring of dams on a low-sodium diet, and the expression of Pax-2 and FGF-2 was lower in offspring of dams on a high-sodium diet. Both excessively high and excessively low sodium intakes during pregnancy modify protein expression in offspring kidneys and reduce the final number of glomeruli, predisposing the risk of hypertension later in life.
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Ontogenetic role of angiontensin-converting enzyme in rats: Thirst and sodium appetite evaluation. Physiol Behav 2010; 99:118-24. [DOI: 10.1016/j.physbeh.2009.10.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2009] [Revised: 10/22/2009] [Accepted: 10/29/2009] [Indexed: 11/18/2022]
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