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Tanaka Y, Maeda N, Koseki M, Maeda K. Changes in Body Weight in Severely Obese Patients Treated with the Anorexiant Mazindol. J Clin Med 2024; 13:1860. [PMID: 38610625 PMCID: PMC11012520 DOI: 10.3390/jcm13071860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 03/17/2024] [Accepted: 03/20/2024] [Indexed: 04/14/2024] Open
Abstract
(1) Background: The number of severely obese patients worldwide is rapidly increasing. Recently, novel therapeutic approaches, such as bariatric surgery or GLP-1 receptor agonists, have emerged, bringing about a paradigm shift in this field. However, these therapies sometimes face challenges, such as peri-surgical complications or supply shortages. Mazindol, which is an appetite suppressant approved decades ago in Japan, remains a valuable option. In this study, we investigated the effectiveness of mazindol in reducing body weight in 147 patients, and we examined the factors influencing said effectiveness. (2) Methods: The patients were divided into four groups based on the treatment cycles they underwent: 1 cycle, 2 cycles, 3-5 cycles, and over 6 cycles. We compared the changes in body weight before and after the treatment among these four groups. Additionally, we sought to identify the factors correlated to the effectiveness of mazindol. (3) Results: The change in body weight was more pronounced in the group which underwent 3-5 cycles compared to the groups which underwent 1 cycle and 2 cycles; this change was also more pronounced in the group which underwent over 6 cycles compared to those which underwent 1 cycle. Furthermore, we observed a significant correlation between the initial body weight and the extent of body weight change. (4) Conclusions: Mazindol demonstrated effectiveness in reducing the body weight of patients in a cycle-dependent manner.
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Affiliation(s)
| | - Norikazu Maeda
- Longwood Maeda Clinic, Suita 565-0874, Japan
- Department of Endocrinology, Metabolism and Diabetes, Faculty of Medicine, Kindai University, Osaka-Sayama 589-8511, Japan
| | - Masahiro Koseki
- Longwood Maeda Clinic, Suita 565-0874, Japan
- Division of Cardiovascular Medicine, Department of Medicine, Osaka University Graduate School of Medicine, Suita 565-0871, Japan
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2
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Mishra G, Townsend KL. The metabolic and functional roles of sensory nerves in adipose tissues. Nat Metab 2023; 5:1461-1474. [PMID: 37709960 DOI: 10.1038/s42255-023-00868-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 07/18/2023] [Indexed: 09/16/2023]
Abstract
Homeostatic regulation of adipose tissue is critical for the maintenance of energy balance and whole-body metabolism. The peripheral nervous system provides bidirectional neural communication between the brain and adipose tissue, thereby providing homeostatic control. Most research on adipose innervation and nerve functions has been limited to the sympathetic nerves and their neurotransmitter norepinephrine. In recent years, more work has focused on adipose sensory nerves, but the contributions of subsets of sensory nerves to metabolism and the specific roles contributed by sensory neuropeptides are still understudied. Advances in imaging of adipose innervation and newer tissue denervation techniques have confirmed that sensory nerves contribute to the regulation of adipose functions, including lipolysis and browning. Here, we summarize the historical and latest findings on the regulation, function and plasticity of adipose tissue sensory nerves that contribute to metabolically important processes such as lipolysis, vascular control and sympathetic axis cross-talk.
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Affiliation(s)
- Gargi Mishra
- Department of Neurological Surgery, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Kristy L Townsend
- Department of Neurological Surgery, College of Medicine, The Ohio State University, Columbus, OH, USA.
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3
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García-García I, Michaud A, Jurado MÁ, Dagher A, Morys F. Mechanisms linking obesity and its metabolic comorbidities with cerebral grey and white matter changes. Rev Endocr Metab Disord 2022; 23:833-843. [PMID: 35059979 DOI: 10.1007/s11154-021-09706-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/14/2021] [Indexed: 02/07/2023]
Abstract
Obesity is a preventable risk factor for cerebrovascular disorders and it is associated with cerebral grey and white matter changes. Specifically, individuals with obesity show diminished grey matter volume and thickness, which seems to be more prominent among fronto-temporal regions in the brain. At the same time, obesity is associated with lower microstructural white matter integrity, and it has been found to precede increases in white matter hyperintensity load. To date, however, it is unclear whether these findings can be attributed solely to obesity or whether they are a consequence of cardiometabolic complications that often co-exist with obesity, such as low-grade systemic inflammation, hypertension, insulin resistance, or dyslipidemia. In this narrative review we aim to provide a comprehensive overview of the potential impact of obesity and a number of its cardiometabolic consequences on brain integrity, both separately and in synergy with each other. We also identify current gaps in knowledge and outline recommendations for future research.
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Affiliation(s)
- Isabel García-García
- Department of Clinical Psychology and Psychobiology, Universitat de Barcelona, Barcelona, Spain.
- Institut de Neurociències, Universitat de Barcelona, Barcelona, Spain.
| | | | - María Ángeles Jurado
- Department of Clinical Psychology and Psychobiology, Universitat de Barcelona, Barcelona, Spain
- Institut de Neurociències, Universitat de Barcelona, Barcelona, Spain
- Institut de Recerca Sant Joan de Déu, Hospital Sant Joan de Déu, Esplugues de Llobregat, Spain
| | - Alain Dagher
- Department of Neurology and Neurosurgery, McGill University, Montreal, Canada
| | - Filip Morys
- Department of Neurology and Neurosurgery, McGill University, Montreal, Canada
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Sabbari M, Mirzababaei A, Shiraseb F, Clark CCT, Mirzaei K. The association between recommended and non-recommended food scores on cardiovascular risk factors in obese and overweight adult women: a cross-sectional study. BMC Public Health 2022; 22:795. [PMID: 35449003 PMCID: PMC9027453 DOI: 10.1186/s12889-021-12404-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Accepted: 12/10/2021] [Indexed: 11/23/2022] Open
Abstract
Objective Obesity is a highly prevalent, non-communicable, disease associated with numerous comorbid complications, such as cardiovascular disease. Following a healthy diet is known to help reduce the risk of both obesity and cardiovascular disease. This study was conducted to evaluate the association of recommended food score (RFS) and none recommended food score (NRFS) with cardiovascular risk factors in overweight and obese women. Methods This cross-sectional study was performed on 379 overweight and obese (BMI ≥25 kg/m2) women aged 18-48 years. Anthropometric measurements and body composition analysis were assessed in all participants. Dietary intake was assessed by a valid and reliable food frequency questionnaire (FFQ) containing 147 items, and RFS and NRFS was calculated. Biochemical assessments including TC, HDL, LDL, TG, FBS, insulin, HOMA-IR, and hs-CRP were quantified by ELISA. Results The mean age and BMI of participants were 36.73 ± 9.21 (y) and 31.17 ± 4.22 (kg/m2), respectively. Binary logistic regression showed that participants in the highest tertile of the RFS compared to the lowest tertile had 57% lower odds for hypertriglyceridemia [OR = 0.43, 95%CI = 0.20-0.92, P = 0.03]. Subjects with high adherence to the NRFS had lower HDL [OR = 2.11, 95%CI = 1.08-4.12, P = 0.02] and higher odds for hypertriglyceridemia [OR = 2.95, 95%CI = 1.47-5.94, P = 0.002] compared to low adherence. Conclusions There was an inverse significant association between adherence to RFS and odds of hypertriglyceridemia. There was a significant association between NRFS and hypertriglyceridemia, in addition to an inverse association between NRFS and HDL. We recommend that people increase their consumption of fruits, vegetables, whole grains, lean meats or meat alternates, and low-fat dairy and avoid red meat, processed meat, chips, high-fat dairy, solid oil, refined grains, and variety of sweetened foods to prevent cardiovascular disease.
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Affiliation(s)
- Maryam Sabbari
- Faculty of Medical Sciences and Technologies, Islamic Azad University, Science and Research Branch of Tehran, Tehran, Iran
| | - Atieh Mirzababaei
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), P.O. Box: 14155-6117, Tehran, Iran
| | - Farideh Shiraseb
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), P.O. Box: 14155-6117, Tehran, Iran
| | - Cain C T Clark
- Centre for Intelligent Healthcare, Coventry University, Coventry, CV1 5FB, UK
| | - Khadijeh Mirzaei
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), P.O. Box: 14155-6117, Tehran, Iran.
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Silva-Boghossian CM, Dezonne RS. What Are the Clinical and Systemic Results of Periodontitis Treatment in Obese Individuals? ACTA ACUST UNITED AC 2021; 8:48-65. [PMID: 34367878 PMCID: PMC8327900 DOI: 10.1007/s40496-021-00295-5] [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] [Accepted: 06/30/2021] [Indexed: 12/24/2022]
Abstract
Purpose of Review Periodontitis and obesity are characterized by a dysregulated inflammatory state. Obese individuals have a higher chance of presenting periodontitis. Clinical studies in different populations demonstrate that individuals with obesity have worse periodontal conditions. This current review aims to explore recent literature to understand what the impacts of obesity on periodontal treatment outcomes are and to learn whether periodontal treatment can improve systemic biomarkers in obese individuals. Recent Findings Short- and long-term evaluations demonstrated that non-surgical periodontal treatment could improve clinical parameters in obese individuals, represented as the reduction in mean probing depth, sites with probing depth ≥ 4 mm, and extension of bleeding on probing. However, obese individuals may have less clinical improvement when compared to normal-weight individuals with a similar periodontal profile. Additionally, periodontal treatment may contribute to a reduction in systemic levels of retinol-binding protein 4 and leptin, while promoting an increase in systemic levels of adiponectin. Summary Overall, obese individuals with periodontitis can significantly benefit from non-surgical periodontal treatment. However, clinical improvements seem to be less prominent in obese individuals with periodontitis compared to non-obese individuals with similar periodontal status. Nevertheless, periodontal treatment may impact significantly on the reduction of several biochemical biomarkers of obesity with or without weight reduction. Further investigations are needed to improve our comprehension of the mechanisms underlying those findings.
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Affiliation(s)
- Carina M. Silva-Boghossian
- Periodontics, School of Dentistry, Federal University of Rio de Janeiro, Rua Professor Rodolpho Paulo Rocco, 325, Cidade Universitaria, Rio de Janeiro, RJ CEP 21941-617 Brazil
| | - Romulo S. Dezonne
- Postgraduate Program in Translational Biomedicine, University of Grande Rio, Duque de Caxias, RJ Brazil
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Obesity-associated cardiovascular risk in women: hypertension and heart failure. Clin Sci (Lond) 2021; 135:1523-1544. [PMID: 34160010 DOI: 10.1042/cs20210384] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 05/14/2021] [Accepted: 06/07/2021] [Indexed: 02/07/2023]
Abstract
The pathogenesis of obesity-associated cardiovascular diseases begins long prior to the presentation of a cardiovascular event. In both men and women, cardiovascular events, and their associated hospitalizations and mortality, are often clinically predisposed by the presentation of a chronic cardiovascular risk factor. Obesity increases the risk of cardiovascular diseases in both sexes, however, the clinical prevalence of obesity, as well as its contribution to crucial cardiovascular risk factors is dependent on sex. The mechanisms via which obesity leads to cardiovascular risk is also discrepant in women between their premenopausal, pregnancy and postmenopausal phases of life. Emerging data indicate that at all reproductive statuses and ages, the presentation of a cardiovascular event in obese women is strongly associated with hypertension and its subsequent chronic risk factor, heart failure with preserved ejection fraction (HFpEF). In addition, emerging evidence indicates that obesity increases the risk of both hypertension and heart failure in pregnancy. This review will summarize clinical and experimental data on the female-specific prevalence and mechanisms of hypertension and heart failure in women across reproductive stages and highlight the particular risks in pregnancy as well as emerging data in a high-risk ethnicity in women of African ancestry (AA).
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What Is the Most Common Cause of Secondary Hypertension?: An Interdisciplinary Discussion. Curr Hypertens Rep 2020; 22:101. [PMID: 33119816 DOI: 10.1007/s11906-020-01106-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/01/2020] [Indexed: 02/07/2023]
Abstract
PURPOSE OF REVIEW Traditional statements in medical textbooks pointed that 90 to 95% of cases of hypertension is essential or primary. However, secondary hypertension seems to be common in those patients with resistant forms of hypertension. Appropriate investigation and treatment may have prognostic impact but frequently hypertension remission did not occur raising concerns about the real meaning of secondary hypertension. Here, we provided an interdisciplinary and critical discussion comprising an endocrinologist, a nephrologist, and a cardiologist with expertise in resistant hypertension. We reviewed the literature approaching each one of the recognizable cause of hypertension. RECENT FINDINGS Recent studies pointed that the most common causes of secondary hypertension are those who overall responses to their treatments do not promote hypertension remission including obstructive sleep apnea (OSA), chronic kidney disease, renovascular hypertension and primary aldosteronism. The authors raised concerns regarding the lack of inclusion of obesity by several societies as a formal cause of hypertension considering not only the biologic plausibility but also the huge impact of weight loss therapies such as bariatric surgery on hypertension remission. In contrast, there is no discussion that a very rare condition-namely pheochromocytoma-is the most "typical" cause of hypertension by promoting hypertension remission in the majority of patients after surgical procedure. Hypertension is a complex condition with multiple environmental and genetics interactions. In clinical practice, it is challenging to prove causality in hypertension. Common conditions largely acceptable as causes of hypertension (OSA, chronic kidney disease, renovascular hypertension, and primary aldosteronism) frequently occur in a setting of an established hypertension background and therefore do not promote hypertension remission in a significant proportion of patients. If obesity becomes largely accepted by several societies as a secondary form of hypertension, this pandemic condition will be certainly the most common cause of hypertension.
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Francischetti EA, de Abreu VG, da Silva Figueiredo LF, Dezonne RS, Coutinho ESF. Effects of Blood Pressure Lowering Agents on Cardiovascular Outcomes in Weight Excess Patients: A Systematic Review and Meta-analysis. Am J Cardiovasc Drugs 2020; 20:447-470. [PMID: 31898196 DOI: 10.1007/s40256-019-00393-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
BACKGROUND Obesity hypertension is an ongoing pandemic. The first-line medications to treat this condition are still subject to debate. We compared diuretics, calcium-channel blockers (CCB), beta-blockers (BB), angiotensin-converting enzyme inhibitors (ACEI) and angiotensin receptor blockers (ARB) as an initial antihypertensive therapy for prevention of cardiovascular morbimortality of hypertensive individuals who are overweight or obese. METHODS We conducted a search of the literature for randomized clinical trials in which at least 50% of the participants were overweight or obese. The primary outcomes were all-cause mortality, cardiovascular mortality, acute myocardial infarction (MI), heart failure (HF), stroke, or end-stage renal disease. RESULTS Our search yielded 16 randomized studies. Comparisons of two classes of drugs with at least two studies indicated that (1) CCB and ACEI increased the risk of HF [relative risk (RR) = 2.26; 95% confidence interval (CI) 1.16-4.40] and stroke [hazard ratio (HR) = 1.13; 1.00-1.26]), respectively, compared to diuretics; and (2) CCB showed a reduction in stroke (HR = 0.77; 0.66-0.89) and total mortality (HR = 0.94; 0.87-1.01) compared to the BB atenolol. Comparisons of two classes of antihypertensive medications with only one study showed that the risk of MI was higher with ARB valsartan versus CCB (HR = 1.19; 95% CI 1.02-1.38, p = 0.02). In contrast, losartan lowered the risk of a composite cardiovascular outcome compared to atenolol (HR = 0.87; 95% CI 0.77-0.98, p = 0.02). CONCLUSIONS In hypertensive subjects with excess weight, diuretics are more effective for preventing HF and stroke than CCB and ACEI, respectively. CCB are a good first-line choice for prevention of cardiovascular disease, except HF.
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HuoXue QianYang QuTan Recipe attenuates left ventricular hypertrophy in obese hypertensive rats by improving mitochondrial function through SIRT1/PGC-1α deacetylation pathway. Biosci Rep 2020; 39:221366. [PMID: 31778153 PMCID: PMC6923340 DOI: 10.1042/bsr20192909] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 11/15/2019] [Accepted: 11/25/2019] [Indexed: 12/11/2022] Open
Abstract
Mitochondrial dysfunction plays a vital role in the progression of left ventricular hypertrophy (LVH). Previous studies have confirmed that the disorder of SIRT1/PGC-1α deacetylation pathway aggravated mitochondrial dysfunction. HuoXue QianYang QuTan Recipe (HQQR) is a commonly used prescription that has shown therapeutic effects on obesity hypertension and its complications. However, the potential mechanisms are still unclear. In the present study, obesity hypertension (OBH) was established in rats and we investigated the efficacy and mechanisms of HQQR on LVH. Rats were divided into the five groups: (1) WKY-ND group, (2) SHR-ND group, (3) OBH-HF group, (4) OBH-HF/V group and (5) OBH-HF/H group. We evaluated body weight, Lee index and blood pressure (BP) before and every 2 weeks after treatment. After 10 weeks of treatment, we mainly detected glycolipid metabolic index, the severity of LVH, mitochondrial function along with SIRT1/PGC-1α deacetylation pathway. Our results showed that HQQR significantly lowered body weight, Lee index, BP and improved the disorder of glycolipid metabolism in OBH rats. Importantly, we uncovered HQQR could alleviate mitochondrial dysfunction in OBH rats by regulating SIRT1/PGC-1α deacetylation pathway. These changes could be associated with the inhibition of LVH.
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Batschauer T, Cordeiro JM, Simas BB, Brunetta HS, Souza RM, Nunes EA, Reis WL, Moreira ELG, Crestani CC, Santos ARS, Speretta GF. Behavioral, cardiovascular and endocrine alterations induced by chronic stress in rats fed a high-fat diet. Physiol Behav 2020; 223:113013. [PMID: 32540332 DOI: 10.1016/j.physbeh.2020.113013] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 06/01/2020] [Accepted: 06/10/2020] [Indexed: 11/19/2022]
Abstract
Chronic stress is a risk factor for cardiovascular diseases (CVD) and anxiety disorders (AD). Obesity also increases the risk of CVD and AD. The modern lifestyle commonly includes high-fat diet (HFD) intake and daily exposure to stressful events. However, it is not completely understood whether chronic stress exacerbates HFD-induced behavioral and physiological changes. Thus, this study aimed to evaluate the effects of the exposure to chronic variable stress (CVS) on behavioral, cardiovascular, and endocrine parameters in rats fed an HFD. Male Wistar rats were divided into four groups: control-standard chow diet (control-SD), control-HFD, CVS-SD, and CVS-HFD. The control-HFD and CVS-HFD groups were fed with HFD for six weeks. The CVS-HFD and CVS-SD groups were exposed to a CVS protocol in the last ten days of the six weeks. The behavioral analysis revealed that CVS decreased the open-arm exploration time during the elevated plus-maze test (p < 0.05). HFD promoted metabolic disorders and increased angiotensin II and leptin blood levels (p < 0.05). CVS or HFD increased blood pressure and the sympathetic nervous system (SNS) modulation of the heart and vessels and decreased baroreflex activity (p < 0.05). Combining CVS and HFD exacerbated the cardiac SNS response and increased basal heart rate (HR) (p < 0.05). CVS or HFD did not affect vascular function and aorta nitrate (p > 0.05). Taken together, these data indicate a synergism between HFD and CVS on the HR and cardiac SNS responses, suggesting an increased cardiovascular risk. Besides, neuroendocrine and anxiogenic disturbers may contribute to the cardiovascular changes induced by HFD and CVS, respectively.
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Affiliation(s)
- Tiago Batschauer
- Department of Physiological Sciences, Biological Sciences Centre, Federal University of Santa Catarina (UFSC), Florianópolis, SC, Brazil; Postgraduate Program in Neuroscience, Biological Sciences Centre, Federal University of Santa Catarina (UFSC), Florianópolis, SC, Brazil
| | - Júlio M Cordeiro
- Department of Physiological Sciences, Biological Sciences Centre, Federal University of Santa Catarina (UFSC), Florianópolis, SC, Brazil
| | - Bruna B Simas
- Department of Physiological Sciences, Biological Sciences Centre, Federal University of Santa Catarina (UFSC), Florianópolis, SC, Brazil
| | - Henver S Brunetta
- Department of Physiological Sciences, Biological Sciences Centre, Federal University of Santa Catarina (UFSC), Florianópolis, SC, Brazil
| | - Raul M Souza
- Department of Physiological Sciences, Biological Sciences Centre, Federal University of Santa Catarina (UFSC), Florianópolis, SC, Brazil; Postgraduate Program in Neuroscience, Biological Sciences Centre, Federal University of Santa Catarina (UFSC), Florianópolis, SC, Brazil
| | - Everson A Nunes
- Department of Physiological Sciences, Biological Sciences Centre, Federal University of Santa Catarina (UFSC), Florianópolis, SC, Brazil
| | - Wagner L Reis
- Department of Physiological Sciences, Biological Sciences Centre, Federal University of Santa Catarina (UFSC), Florianópolis, SC, Brazil
| | - Eduardo L G Moreira
- Department of Physiological Sciences, Biological Sciences Centre, Federal University of Santa Catarina (UFSC), Florianópolis, SC, Brazil; Postgraduate Program in Neuroscience, Biological Sciences Centre, Federal University of Santa Catarina (UFSC), Florianópolis, SC, Brazil
| | - Carlos C Crestani
- Laboratory of Pharmacology, São Paulo State University (UNESP), School of Pharmaceutical Sciences, Araraquara, SP, Brazil
| | - Adair R S Santos
- Department of Physiological Sciences, Biological Sciences Centre, Federal University of Santa Catarina (UFSC), Florianópolis, SC, Brazil; Postgraduate Program in Neuroscience, Biological Sciences Centre, Federal University of Santa Catarina (UFSC), Florianópolis, SC, Brazil
| | - Guilherme F Speretta
- Department of Physiological Sciences, Biological Sciences Centre, Federal University of Santa Catarina (UFSC), Florianópolis, SC, Brazil; Postgraduate Program in Neuroscience, Biological Sciences Centre, Federal University of Santa Catarina (UFSC), Florianópolis, SC, Brazil.
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11
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Jennings JR, Muldoon MF, Allen B, Ginty AT, Gianaros PJ. Cerebrovascular function in hypertension: Does high blood pressure make you old? Psychophysiology 2020; 58:e13654. [PMID: 32830869 DOI: 10.1111/psyp.13654] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Revised: 05/22/2020] [Accepted: 07/13/2020] [Indexed: 12/22/2022]
Abstract
The majority of individuals over an age of 60 have hypertension. Elevated blood pressure and older age are associated with very similar changes in brain structure and function. We review the parallel brain changes associated with increasing age and blood pressure. This review focuses on joint associations of aging and elevated blood pressure with neuropsychological function, regional cerebral blood flow responses to cognitive and metabolic challenges, white matter disruptions, grey matter volume, cortical thinning, and neurovascular coupling. Treatment of hypertension ameliorates many of these changes but fails to reverse them. Treatment of hypertension itself appears more successful with better initial brain function. We show evidence that sympathetic and renal influences known to increase blood pressure also impact brain integrity. Possible central mechanisms contributing to the course of hypertension and aging are then suggested. An emphasis is placed on psychologically relevant factors: stress, cardiovascular reactions to stress, and diet/obesity. The contribution of some of these factors to biological aging remains unclear and may provide a starting point for defining the independent and interacting effects of aging and increasing blood pressure on the brain.
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Affiliation(s)
- J Richard Jennings
- Department of Psychiatry, University of Pittsburgh, Pittsburgh, PA, USA.,Department of Psychology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Matthew F Muldoon
- Department of Medicine, Heart and Vascular Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Ben Allen
- Department of Psychology, University of Tennessee, Knoxville, TN, USA
| | - Annie T Ginty
- Department of Psychology and Neuroscience, Baylor University, Waco, TX, USA
| | - Peter J Gianaros
- Department of Psychology, University of Pittsburgh, Pittsburgh, PA, USA
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Almeanazel O, Alanazi F, Alsarra I, Alshora D, Shakeel F, Almnaizel A, Alahmed M, Fouad E. Nanotechnology as a tool to overcome the bariatric surgery malabsorption. Saudi Pharm J 2020; 28:565-573. [PMID: 32435137 PMCID: PMC7229319 DOI: 10.1016/j.jsps.2020.03.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Accepted: 03/12/2020] [Indexed: 12/22/2022] Open
Abstract
Obesity is a metabolic disease that affects all ages; it is considered life-threatening condition as it leads to fatal complications such as; cardiovascular diseases and diabetes. The therapeutic options include; life-style modifications, pharmacotherapy intervention, and surgical intervention. Bariatric surgery (BS) is considered as the most effective option among the others for its rapid weight loss, maintaining the lost mass, and improving the quality of life of the patients. Nevertheless, BS leads to severe changes in the bioavailability of medications, especially for chronic diseases, which may reach to limit where the patient's life endangers. Recently, pharmaceutical formulations had developed several methods to improve the drug bioavailability of drugs though the implying of nanotechnology. Nonotechnology is responsible for reducing the size of the drugs to the nano range (<1000 nm), which increase the drug surface area, dissolution, absorption, and, most importantly, the bioavailability of these drugs. It is believed that BS malabsorption and drugs bioavailability problems can be solved using nanotechnology for its advantages in overcoming BS complications.
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Key Words
- AGB, Adjustable Gastric band
- ASMBS, American Society for Metabolic and Bariatric Surgery
- Absorption
- BS, Bariatric Surgery
- Bariatric surgery
- Bioavailability
- CFR, Code of Federal Regulations
- DDS, Drug Delivery System
- FDA, Food and Drug Administration
- GIT, Gastrointestinal Tract
- GRS, Generally Recognized as Safe
- ISCRPE, improved supercritical reverse phase evaporation
- JIB, Jejunoileal bypass
- LAG, Laparoscopic Sleeve Gastrectomy
- MBI, Body Mass Index
- MIC, Minimum Inhibitory Concentration
- Nanotechnology
- RYGB, Roux-en-Y gastric bypass
- SCF, supercritical fluid
- SNEDDS, selfnanoemulsifying drug delivery system
- T2DM, Type 2 Diabetes Mellitus
- VA, veteran affairs
- WHO, World health organization
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Affiliation(s)
- Osaid Almeanazel
- Kayyali Chair for Pharmaceutical Industries, Department of Pharmaceutics, King Saud University, Riyadh, Saudi Arabia
| | - Fars Alanazi
- Kayyali Chair for Pharmaceutical Industries, Department of Pharmaceutics, King Saud University, Riyadh, Saudi Arabia
| | - Ibrahim Alsarra
- Kayyali Chair for Pharmaceutical Industries, Department of Pharmaceutics, King Saud University, Riyadh, Saudi Arabia
| | - Doaa Alshora
- Kayyali Chair for Pharmaceutical Industries, Department of Pharmaceutics, King Saud University, Riyadh, Saudi Arabia
| | - Faiyaz Shakeel
- Kayyali Chair for Pharmaceutical Industries, Department of Pharmaceutics, King Saud University, Riyadh, Saudi Arabia
| | - Ahmad Almnaizel
- Prince Naif for Health Research Center, King Saud University, Riyadh, Saudi Arabia
| | - Mohammed Alahmed
- Prince Naif for Health Research Center, King Saud University, Riyadh, Saudi Arabia
| | - Ehab Fouad
- Kayyali Chair for Pharmaceutical Industries, Department of Pharmaceutics, King Saud University, Riyadh, Saudi Arabia
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13
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Hyperosmolarity and Increased Serum Sodium Concentration Are Risks for Developing Hypertension Regardless of Salt Intake: A Five-Year Cohort Study in Japan. Nutrients 2020; 12:nu12051422. [PMID: 32423124 PMCID: PMC7284783 DOI: 10.3390/nu12051422] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 05/06/2020] [Accepted: 05/07/2020] [Indexed: 01/23/2023] Open
Abstract
The potential contribution of serum osmolarity in the modulation of blood pressure has not been evaluated. This study was done to examine the relationship between hyperosmolarity and hypertension in a five-year longitudinal design. We enrolled 10,157 normotensive subjects without diabetes who developed hypertension subsequently as determined by annual medical examination in St. Luke's International Hospital, Tokyo, between 2004 and 2009. High salt intake was defined as >12 g/day by a self-answered questionnaire and hyperosmolarity was defined as >293 mOsm/L serum osmolarity, calculated using serum sodium, fasting blood glucose, and blood urea nitrogen. Statistical analyses included adjustments for age, gender, body mass index, smoking, drinking alcohol, dyslipidemia, hyperuricemia, and chronic kidney disease. In the patients with normal osmolarity, the group with high salt intake had a higher cumulative incidence of hypertension than the group with normal salt intake (8.4% versus 6.7%, p = 0.023). In contrast, in the patients with high osmolarity, the cumulative incidence of hypertension was similar in the group with high salt intake and in the group with normal salt intake (13.1% versus 12.9%, p = 0.84). The patients with hyperosmolarity had a higher incidence of hypertension over five years compared to that of the normal osmolarity group (p < 0.001). After multiple adjustments, elevated osmolarity was an independent risk for developing hypertension (OR (odds ratio), 1.025; 95% CI (confidence interval), 1.006-1.044), regardless of the amount of salt intake. When analyzed in relation to each element of calculated osmolarity, serum sodium and fasting blood glucose were independent risks for developing hypertension. Our results suggest that hyperosmolarity is a risk for developing hypertension regardless of salt intake.
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14
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Mouton AJ, Li X, Hall ME, Hall JE. Obesity, Hypertension, and Cardiac Dysfunction: Novel Roles of Immunometabolism in Macrophage Activation and Inflammation. Circ Res 2020; 126:789-806. [PMID: 32163341 DOI: 10.1161/circresaha.119.312321] [Citation(s) in RCA: 235] [Impact Index Per Article: 58.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Obesity and hypertension, which often coexist, are major risk factors for heart failure and are characterized by chronic, low-grade inflammation, which promotes adverse cardiac remodeling. While macrophages play a key role in cardiac remodeling, dysregulation of macrophage polarization between the proinflammatory M1 and anti-inflammatory M2 phenotypes promotes excessive inflammation and cardiac injury. Metabolic shifting between glycolysis and mitochondrial oxidative phosphorylation has been implicated in macrophage polarization. M1 macrophages primarily rely on glycolysis, whereas M2 macrophages rely on the tricarboxylic acid cycle and oxidative phosphorylation; thus, factors that affect macrophage metabolism may disrupt M1/M2 homeostasis and exacerbate inflammation. The mechanisms by which obesity and hypertension may synergistically induce macrophage metabolic dysfunction, particularly during cardiac remodeling, are not fully understood. We propose that obesity and hypertension induce M1 macrophage polarization via mechanisms that directly target macrophage metabolism, including changes in circulating glucose and fatty acid substrates, lipotoxicity, and tissue hypoxia. We discuss canonical and novel proinflammatory roles of macrophages during obesity-hypertension-induced cardiac injury, including diastolic dysfunction and impaired calcium handling. Finally, we discuss the current status of potential therapies to target macrophage metabolism during heart failure, including antidiabetic therapies, anti-inflammatory therapies, and novel immunometabolic agents.
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Affiliation(s)
- Alan J Mouton
- From the Department of Physiology and Biophysics (A.J.M., X.L., M.E.H., J.E.H.), University of Mississippi Medical Center, Jackson.,Mississippi Center for Obesity Research (A.J.M., X.L., M.E.H., J.E.H.), University of Mississippi Medical Center, Jackson
| | - Xuan Li
- From the Department of Physiology and Biophysics (A.J.M., X.L., M.E.H., J.E.H.), University of Mississippi Medical Center, Jackson.,Mississippi Center for Obesity Research (A.J.M., X.L., M.E.H., J.E.H.), University of Mississippi Medical Center, Jackson
| | - Michael E Hall
- From the Department of Physiology and Biophysics (A.J.M., X.L., M.E.H., J.E.H.), University of Mississippi Medical Center, Jackson.,Department of Medicine (M.E.H.), University of Mississippi Medical Center, Jackson.,Mississippi Center for Obesity Research (A.J.M., X.L., M.E.H., J.E.H.), University of Mississippi Medical Center, Jackson
| | - John E Hall
- From the Department of Physiology and Biophysics (A.J.M., X.L., M.E.H., J.E.H.), University of Mississippi Medical Center, Jackson.,Mississippi Center for Obesity Research (A.J.M., X.L., M.E.H., J.E.H.), University of Mississippi Medical Center, Jackson
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15
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DeLalio LJ, Sved AF, Stocker SD. Sympathetic Nervous System Contributions to Hypertension: Updates and Therapeutic Relevance. Can J Cardiol 2020; 36:712-720. [PMID: 32389344 DOI: 10.1016/j.cjca.2020.03.003] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 03/02/2020] [Accepted: 03/03/2020] [Indexed: 12/15/2022] Open
Abstract
The sympathetic nervous system plays a pivotal role in the long-term regulation of arterial blood pressure through the ability of the central nervous system to integrate neurohumoral signals and differentially regulate sympathetic neural input to specific end organs. Part 1 of this review will discuss neural mechanisms of salt-sensitive hypertension, obesity-induced hypertension, and the ability of prior experiences to sensitize autonomic networks. Part 2 of this review focuses on new therapeutic advances to treat resistant hypertension including renal denervation and carotid baroactivation. Both advances lower arterial blood pressure by reducing sympathetic outflow. We discuss potential mechanisms and areas of future investigation to target the sympathetic nervous system.
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Affiliation(s)
- Leon J DeLalio
- Department of Medicine, Renal-Electrolyte Division, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Alan F Sved
- Department of Neuroscience, University of Pittsburgh, Pennsylvania, USA
| | - Sean D Stocker
- Department of Medicine, Renal-Electrolyte Division, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
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16
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Abstract
Despite availability of effective drugs for hypertension therapy, significant numbers of hypertensive patients fail to achieve recommended blood pressure levels on ≥3 antihypertensive drugs of different classes. These individuals have a high prevalence of adverse cardiovascular events and are defined as having resistant hypertension (RHT) although nonadherence to prescribed antihypertensive medications is common in patients with apparent RHT. Furthermore, apparent and true RHT often display increased sympathetic activity. Based on these findings, technology was developed to treat RHT by suppressing sympathetic activity with electrical stimulation of the carotid baroreflex and catheter-based renal denervation (RDN). Over the last 15 years, experimental and clinical studies have provided better understanding of the physiological mechanisms that account for blood pressure lowering with baroreflex activation and RDN and, in so doing, have provided insight into which patients in this heterogeneous hypertensive population are most likely to respond favorably to these device-based therapies. Experimental studies have also played a role in modifying device technology after early clinical trials failed to meet key endpoints for safety and efficacy. At the same time, these studies have exposed potential differences between baroreflex activation and RDN and common challenges that will likely impact antihypertensive treatment and clinical outcomes in patients with RHT. In this review, we emphasize physiological studies that provide mechanistic insights into blood pressure lowering with baroreflex activation and RDN in the context of progression of clinical studies, which are now at a critical point in determining their fate in RHT management.
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Affiliation(s)
- Thomas E Lohmeier
- From the Department of Physiology and Biophysics (T.E.L., J.E.H.), University of Mississippi Medical Center, Jackson
| | - John E Hall
- From the Department of Physiology and Biophysics (T.E.L., J.E.H.), University of Mississippi Medical Center, Jackson.,Mississippi Center for Obesity Research (J.E.H.), University of Mississippi Medical Center, Jackson
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17
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LUCAS CRISTINAM, ZANIQUELI DIVANEI, ALVIM RAFAELO, MIGUEL GUSTAVOP, MILL JOSÉGERALDO. Longitudinal study of the sympathovagal balance in women submitted to bariatric surgery. ACTA ACUST UNITED AC 2020; 92:e20181184. [DOI: 10.1590/0001-3765202020181184] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 02/08/2019] [Indexed: 12/27/2022]
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18
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Dalmasso C, Leachman JR, Osborn JL, Loria AS. Sensory signals mediating high blood pressure via sympathetic activation: role of adipose afferent reflex. Am J Physiol Regul Integr Comp Physiol 2019; 318:R379-R389. [PMID: 31868518 DOI: 10.1152/ajpregu.00079.2019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Blood pressure regulation in health and disease involves a balance between afferent and efferent signals from multiple organs and tissues. Although there are numerous reviews focused on the role of sympathetic nerves in different models of hypertension, few have revised the contribution of afferent nerves innervating adipose tissue and their role in the development of obesity-induced hypertension. Both clinical and basic research support the beneficial effects of bilateral renal denervation in lowering blood pressure. However, recent studies revealed that afferent signals from adipose tissue, in an adipose-brain-peripheral pathway, could contribute to the increased sympathetic activation and blood pressure during obesity. This review focuses on the role of adipose tissue afferent reflexes and briefly describes a number of other afferent reflexes modulating blood pressure. A comprehensive understanding of how multiple afferent reflexes contribute to the pathophysiology of essential and/or obesity-induced hypertension may provide significant insights into improving antihypertensive therapeutic approaches.
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Affiliation(s)
- Carolina Dalmasso
- Department of Pharmacology and Nutritional Sciences, College of Medicine, University of Kentucky, Lexington, Kentucky
| | - Jacqueline R Leachman
- Department of Pharmacology and Nutritional Sciences, College of Medicine, University of Kentucky, Lexington, Kentucky
| | - Jeffrey L Osborn
- Department of Biology, College of Arts and Sciences, University of Kentucky, Lexington, Kentucky
| | - Analia S Loria
- Department of Pharmacology and Nutritional Sciences, College of Medicine, University of Kentucky, Lexington, Kentucky
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19
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Balasubramanian P, Asirvatham-Jeyaraj N, Monteiro R, Sivasubramanian MK, Hall D, Subramanian M. Obesity-induced sympathoexcitation is associated with Nrf2 dysfunction in the rostral ventrolateral medulla. Am J Physiol Regul Integr Comp Physiol 2019; 318:R435-R444. [PMID: 31823672 DOI: 10.1152/ajpregu.00206.2019] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Increases in sympathetic nerve activity (SNA) have been implicated in obesity-induced risk for cardiovascular diseases, especially hypertension. Previous studies indicate that oxidative stress in the rostral ventrolateral medulla (RVLM), a key brain stem region that regulates sympathetic outflow to peripheral tissues, plays a pathogenic role in obesity-mediated sympathoexcitation. However, the molecular mechanisms underlying this phenomenon are not clear. Nuclear factor erythroid 2-related factor 2 (Nrf2) is a transcription factor that regulates the expression of antioxidant and anti-inflammatory genes and confers cytoprotection against oxidative stress. The present study was designed to investigate whether Nrf2 dysfunction was associated with obesity-induced oxidative stress in the RVLM and sympathoexcitation. C57BL/6J mice were fed with chow or a high-fat diet (HFD) for 16 wk. Blood pressure parameters were assessed by radiotelemeters in conscious freely moving mice. SNA was measured by heart rate variability analysis and also through assessment of depressor response to ganglionic blockade. The RVLM was microdissected for gene expression and protein analysis (Western blot analysis and activity assay) related to Nrf2 signaling. Our results showed that HFD-induced obesity resulted in significant increases in SNA, although we only observed a mild increase in mean arterial pressure. Obesity-induced oxidative stress in the RVLM was associated with impaired Nrf2 signaling marked by decreased Nrf2 activity, downregulation of Nrf2 mRNA, its target genes [NAD(P)H quinone dehyrogenase 1 (Nqo1) and superoxide dismutase 2 (Sod2)], and inflammation. Our findings suggest that obesity results in Nrf2 dysfunction, which likely causes maladaptation to oxidative stress and inflammation in the RVLM. These mechanisms could potentially contribute to obesity-induced sympathoexcitation.
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Affiliation(s)
- Priya Balasubramanian
- Reynolds Oklahoma Center on Aging, The University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | | | - Raisa Monteiro
- Department of Physiological Sciences, College of Veterinary Medicine, Oklahoma State University, Stillwater, Oklahoma
| | - Mahesh Kumar Sivasubramanian
- Department of Physiological Sciences, College of Veterinary Medicine, Oklahoma State University, Stillwater, Oklahoma
| | - Delton Hall
- Department of Physiological Sciences, College of Veterinary Medicine, Oklahoma State University, Stillwater, Oklahoma
| | - Madhan Subramanian
- Department of Physiological Sciences, College of Veterinary Medicine, Oklahoma State University, Stillwater, Oklahoma
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20
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Chen Y, Wu F, Liu X, Parvez F, LoIacono NJ, Gibson EA, Kioumourtzoglou MA, Levy D, Shahriar H, Uddin MN, Islam T, Lomax A, Saxena R, Sanchez T, Santiago D, Ellis T, Ahsan H, Wasserman GA, Graziano JH. Early life and adolescent arsenic exposure from drinking water and blood pressure in adolescence. ENVIRONMENTAL RESEARCH 2019; 178:108681. [PMID: 31520830 PMCID: PMC7010462 DOI: 10.1016/j.envres.2019.108681] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 08/14/2019] [Accepted: 08/18/2019] [Indexed: 05/26/2023]
Abstract
OBJECTIVES Evidence of the association between inorganic arsenic (As) exposure, especially early-life exposure, and blood pressure (BP) in adolescence is limited. We examined the association of As exposure during early childhood, childhood, and adolescence with BP in adolescence. METHODS We conducted a cross-sectional study of 726 adolescents aged 14-17 (mean 14.75) years whose mothers were participants in the Bangladesh Health Effects of Arsenic Longitudinal Study (HEALS). Adolescents' BP was measured at the time of their recruitment between December 2012 and December 2016. We considered maternal urinary As (UAs), repeatedly measured during childhood, as proxy measures of early childhood (<5 years old, A1) and childhood (5-12 years old, A2) exposure. Adolescents' current UAs was collected at the time of recruitment (14-17 years of age, A3). RESULTS Every doubling of UAs at A3 and maternal UAs at A1 was positively associated with a difference of 0.7-mmHg (95% confidence interval [CI]: 0.1, 1.3) and a 0.7-mmHg (95% CI: 0.05, 1.4) in SBP, respectively. These associations were stronger in adolescents with a BMI above the median (17.7 kg/m2) than those with a BMI below the median (P for interaction = 0.03 and 0.03, respectively). There was no significant association between any of the exposure measures and DBP. The Weighted Quantile Sum (WQS) regression confirmed that adolescents' UAs at A3 and maternal UAs at A1 contributed the most to the overall effect of As exposure at three life stages on SBP. Mixture analyses using Bayesian Kernel Machine Regression identified UAs at A3 as a significant contributor to SBP and DBP independent of other concurrent blood levels of cadmium, lead, manganese, and selenium. CONCLUSION Our findings suggest an association of current exposure and early childhood exposure to As with higher BP in adolescents, which may be exacerbated by higher BMI at adolescence.
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Affiliation(s)
- Yu Chen
- Departments of Population Health, New York, NY, USA; Department of Environmental Medicine, New York University School of Medicine, New York, NY, USA.
| | - Fen Wu
- Departments of Population Health, New York, NY, USA; Department of Environmental Medicine, New York University School of Medicine, New York, NY, USA
| | - Xinhua Liu
- Department of Biostatistics, New York, NY, USA
| | - Faruque Parvez
- Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - Nancy J LoIacono
- Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - Elizabeth A Gibson
- Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA
| | | | - Diane Levy
- Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA
| | | | | | - Taruqul Islam
- U-Chicago Research Bangladesh, Ltd., Dhaka, Bangladesh
| | - Angela Lomax
- Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - Roheeni Saxena
- Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - Tiffany Sanchez
- Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - David Santiago
- Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - Tyler Ellis
- Lamont-Doherty Earth Observatory, Columbia University, New York, NY, USA
| | - Habibul Ahsan
- Department of Health Studies, Center for Cancer Epidemiology and Prevention, The University of Chicago, Chicago, IL, USA
| | - Gail A Wasserman
- Department of Psychiatry, College of Physicians and Surgeons, Columbia University, New York, NY, USA
| | - Joseph H Graziano
- Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA.
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21
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Shen CY, Wan L, Wang TX, Jiang JG. Citrus aurantium L. var. amara Engl. inhibited lipid accumulation in 3T3-L1 cells and Caenorhabditis elegans and prevented obesity in high-fat diet-fed mice. Pharmacol Res 2019; 147:104347. [DOI: 10.1016/j.phrs.2019.104347] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 07/05/2019] [Accepted: 07/09/2019] [Indexed: 12/13/2022]
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22
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Intermittent energy restriction is comparable to continuous energy restriction for cardiometabolic health in adults with central obesity: A randomized controlled trial; the Met-IER study. Clin Nutr 2019; 39:1753-1763. [PMID: 31409509 DOI: 10.1016/j.clnu.2019.07.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 07/02/2019] [Accepted: 07/19/2019] [Indexed: 12/21/2022]
Abstract
BACKGROUND & AIMS Short bouts of severe energy restriction may have additional, beneficial cardiometabolic effects beyond that of weight loss. We aimed to assess the short-term effects of intermittent fasting on insulin sensitivity and related cardiometabolic mechanisms. METHODS This parallel arm, randomized controlled trial compared the short-term effects of intermittent and continuous energy restriction (IER and CER) diets on markers of cardiometabolic health in individuals with central obesity, aiming for equivalent weight loss on both diets. Outcomes were assessed in non-smoking men and women (35-75 y), following 4-wk IER (48 h 600 kcal/d followed by 5-day healthy eating advice) or CER diets (-500 kcal/d healthy eating advice). The primary outcome was the revised quantitative insulin sensitivity check index (R-QUICKI), an indirect estimate of insulin sensitivity. Secondary outcomes included ambulatory blood pressure (ABP), indicators of sympathetic activity (heart rate variability (HRV) and normetanephrine), and markers of glucose homeostasis/insulin resistance, adiposity, lipids and inflammation. RESULTS Forty-three participants completed the study. Reductions in body weight were equivalent in both groups: mean loss (%) -2.6; 95% CI -3.3, -1.9 and -2.9; -3.6, -2.1 for CER and IER, respectively, P = 0.464). R-QUICKI increased following IER and CER, with no between-diet differences (overall mean increase (%) 6.6; 3.6, 9.6). Fasting plasma glucose concentrations decreased after CER but not after IER (mean difference CER-IER - 4.8% (0.7, 8.9), P < 0.05) and fasting plasma non-esterified fatty acid concentrations were lower after IER compared to CER (mean difference CER-IER 0.15 mmol/L (0.06, 0.24), P < 0.005). There were no differences in lipids, adipokine/inflammatory markers, ABP or HRV between diets. CONCLUSIONS Short-term CER or IER diets are comparable in their effects on most markers of cardiometabolic risk, although adaptive changes in glucose and fatty acid metabolism occur. This study is registered at clinicaltrials.gov as NCT02679989.
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23
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Lambert GW, Schlaich MP, Eikelis N, Lambert EA. Sympathetic activity in obesity: a brief review of methods and supportive data. Ann N Y Acad Sci 2019; 1454:56-67. [PMID: 31268175 DOI: 10.1111/nyas.14140] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 05/11/2019] [Accepted: 05/23/2019] [Indexed: 12/12/2022]
Abstract
The increase in the prevalence of obesity and the concomitant rise in obesity-related illness have led to substantial pressure on health care systems throughout the world. While the combination of reduced exercise, increased sedentary time, poor diet, and genetic predisposition is undoubtedly pivotal in generating obesity and increasing disease risk, a large body of work indicates that the sympathetic nervous system (SNS) contributes to obesity-related disease development and progression. In obesity, sympathetic nervous activity is regionalized, with activity in some outflows being particularly sensitive to the obese state, whereas other outflows, or responses to stimuli, may be blunted, thereby making the assessment of sympathetic nervous activation in the clinical setting difficult. Isotope dilution methods and direct nerve recording techniques have been developed and utilized in clinical research, demonstrating that in obesity there is preferential activation of the muscle vasoconstrictor and renal sympathetic outflows. With weight loss, sympathetic activity is reduced. Importantly, sympathetic nervous activity is associated with end-organ dysfunction and changes in sympathetic activation that accompany weight loss are often reflected in an improvement of end-organ function. Whether targeting the SNS directly improves obesity-related illness remains unknown, but merits further attention.
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Affiliation(s)
- Gavin W Lambert
- The Iverson Health Innovation Research Institute, Swinburne University of Technology, Hawthorn, Victoria, Australia.,The School of Health Sciences, Swinburne University of Technology, Hawthorn, Victoria, Australia
| | - Markus P Schlaich
- Dobney Hypertension Centre, School of Medicine, Royal Perth Hospital Unit, University of Western Australia, Perth, Western Australia, Australia
| | - Nina Eikelis
- The Iverson Health Innovation Research Institute, Swinburne University of Technology, Hawthorn, Victoria, Australia.,The School of Health Sciences, Swinburne University of Technology, Hawthorn, Victoria, Australia
| | - Elisabeth A Lambert
- The Iverson Health Innovation Research Institute, Swinburne University of Technology, Hawthorn, Victoria, Australia.,The School of Health Sciences, Swinburne University of Technology, Hawthorn, Victoria, Australia
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24
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da Silva AA, do Carmo JM, Wang Z, Hall JE. Melanocortin-4 Receptors and Sympathetic Nervous System Activation in Hypertension. Curr Hypertens Rep 2019; 21:46. [PMID: 31028563 DOI: 10.1007/s11906-019-0951-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
PURPOSE OF REVIEW To highlight the role of the brain melanocortin 4 receptor (MC4R) for sympathetic nervous system (SNS) activation in hypertension. RECENT FINDINGS Hypertension is the most significant risk factor for developing cardiovascular disease. Although excess weight gain is associated with at least two thirds of primary hypertension cases, the pathophysiological mechanisms involved remain the subject of intense investigation. Multiple studies demonstrate an important role for increased sympathetic nervous system (SNS) activity in development and maintenance of hypertension, and that the brain MC4R modulates SNS activity to thermogenic, cardiovascular, and kidney tissues. These studies also support the concept that MC4R activation is critical for obesity-induced hypertension as well as other forms of hypertension associated with increased SNS activity. MC4R is a potential target for antiobesity therapy, although there are challenges in using MC4R agonists to induce weight loss without evoking increases in SNS activity.
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Affiliation(s)
- Alexandre A da Silva
- Department of Physiology and Biophysics, Mississippi Center for Obesity Research, and Cardiovascular-Renal Research Center, The University of Mississippi Medical Center, 2500 North State St., Jackson, MS, 39216-4505, USA.
| | - Jussara M do Carmo
- Department of Physiology and Biophysics, Mississippi Center for Obesity Research, and Cardiovascular-Renal Research Center, The University of Mississippi Medical Center, 2500 North State St., Jackson, MS, 39216-4505, USA
| | - Zhen Wang
- Department of Physiology and Biophysics, Mississippi Center for Obesity Research, and Cardiovascular-Renal Research Center, The University of Mississippi Medical Center, 2500 North State St., Jackson, MS, 39216-4505, USA
| | - John E Hall
- Department of Physiology and Biophysics, Mississippi Center for Obesity Research, and Cardiovascular-Renal Research Center, The University of Mississippi Medical Center, 2500 North State St., Jackson, MS, 39216-4505, USA
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25
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Fujita Y, Kouda K, Ohara K, Nakamura H, Iki M. Leptin mediates the relationship between fat mass and blood pressure: The Hamamatsu School-based health study. Medicine (Baltimore) 2019; 98:e14934. [PMID: 30896657 PMCID: PMC6708678 DOI: 10.1097/md.0000000000014934] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Animal studies have shown that leptin mediates the association between obesity and hypertension. However, only a few studies have assessed this relationship in population-based epidemiological studies. This study aimed to determine whether leptin mediates the relationship between body fat and blood pressure in school-aged children.A cross-sectional survey was conducted among school-aged children in Hamamatsu, Japan. Body fat was measured using dual-energy X-ray absorptiometry. Height-normalized index of fat mass (fat mass index) was calculated by dividing fat mass by height squared. Serum leptin levels were measured by enzyme-linked immunosorbent assay. Multiple regression analysis was used to evaluate relationships between body fat, serum leptin levels, and blood pressure. The mediating effect of leptin on the association between body fat and blood pressure was assessed by causal mediation analysis and regression analysis.Both fat mass index and leptin were significantly and positively associated with blood pressure. Fat mass index was also strongly associated with serum leptin levels. Body fat and blood pressure were no longer associated after adjusting for leptin. These findings suggest that the association between body fat and blood pressure is mediated by leptin. Of the total effect of fat mass index on blood pressure, the mediating effect of leptin accounted for 78.6% (P = .03) in boys and 42.2% (P = .11) in girls.Our findings suggest that body fat is associated with blood pressure, and this association is mediated by leptin. Thus, leptin acts as a mediator that links body adiposity with blood pressure elevation in school-aged children.
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Affiliation(s)
- Yuki Fujita
- Department of Public Health, Kindai University Faculty of Medicine, Osaka-sayama
| | - Katsuyasu Kouda
- Department of Hygiene and Public Health, Kansai Medical University, Hirakata
| | - Kumiko Ohara
- Department of Health Promotion and Education, Graduate School of Human Development and Environment, Kobe University, Kobe, Japan
| | - Harunobu Nakamura
- Department of Health Promotion and Education, Graduate School of Human Development and Environment, Kobe University, Kobe, Japan
| | - Masayuki Iki
- Department of Public Health, Kindai University Faculty of Medicine, Osaka-sayama
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26
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Cuevas S, Villar VAM, Jose PA. Genetic polymorphisms associated with reactive oxygen species and blood pressure regulation. THE PHARMACOGENOMICS JOURNAL 2019; 19:315-336. [PMID: 30723314 PMCID: PMC6650341 DOI: 10.1038/s41397-019-0082-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Revised: 10/19/2018] [Accepted: 12/21/2018] [Indexed: 02/08/2023]
Abstract
Hypertension is the most prevalent cause of cardiovascular disease and kidney failure, but only about 50% of patients achieve adequate blood pressure control, in part, due to inter-individual genetic variations in the response to antihypertensive medication. Significant strides have been made toward the understanding of the role of reactive oxygen species (ROS) in the regulation of the cardiovascular system. However, the role of ROS in human hypertension is still unclear. Polymorphisms of some genes involved in the regulation of ROS production are associated with hypertension, suggesting their potential influence on blood pressure control and response to antihypertensive medication. This review provides an update on the genes associated with the regulation of ROS production in hypertension and discusses the controversies on the use of antioxidants in the treatment of hypertension, including the antioxidant effects of antihypertensive drugs.
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Affiliation(s)
- Santiago Cuevas
- Center for Translational Science, Children's National Health System, 111 Michigan Avenue, NW, Washington, DC, 20010, USA.
| | - Van Anthony M Villar
- Department of Medicine, Division of Renal Diseases and Hypertension, The George Washington University School of Medicine and Health Sciences, Walter G. Ross Hall, Suite 738, 2300 I Street, NW, Washington, DC, 20052, USA
| | - Pedro A Jose
- Department of Medicine, Division of Renal Diseases and Hypertension, The George Washington University School of Medicine and Health Sciences, Walter G. Ross Hall, Suite 738, 2300 I Street, NW, Washington, DC, 20052, USA
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Wang X, Chen D, Li Y, Zhao S, Chen C, Ning D. Alleviating effects of walnut green husk extract on disorders of lipid levels and gut bacteria flora in high fat diet-induced obesity rats. J Funct Foods 2019. [DOI: 10.1016/j.jff.2018.11.022] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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Balasubramanian P, Hall D, Subramanian M. Sympathetic nervous system as a target for aging and obesity-related cardiovascular diseases. GeroScience 2018; 41:13-24. [PMID: 30519806 DOI: 10.1007/s11357-018-0048-5] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Accepted: 11/26/2018] [Indexed: 02/07/2023] Open
Abstract
Chronic sympathetic nervous system overactivity is a hallmark of aging and obesity and contributes to the development of cardiovascular diseases including hypertension and heart failure. The cause of this chronic sympathoexcitation in aging and obesity is multifactorial and centrally mediated. In this mini-review, we have provided an overview of the key and emerging central mechanisms contributing to the pathogenesis of sympathoexcitation in obesity and healthy aging, specifically focusing on hypertension. A clear understanding of these mechanisms will pave way for targeting the sympathetic nervous system for the treatment of cardiovascular diseases in obesity and aging.
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Affiliation(s)
- Priya Balasubramanian
- Reynolds Oklahoma Center on Aging, University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA
| | - Delton Hall
- Department of Physiological Sciences, Center for Veterinary Health Sciences, Oklahoma State University, 277 McElroy Hall, Stillwater, OK, 74078, USA
| | - Madhan Subramanian
- Department of Physiological Sciences, Center for Veterinary Health Sciences, Oklahoma State University, 277 McElroy Hall, Stillwater, OK, 74078, USA.
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Zhang X, Chen Y, Zhu J, Zhang M, Ho CT, Huang Q, Cao J. Metagenomics Analysis of Gut Microbiota in a High Fat Diet-Induced Obesity Mouse Model Fed with (−)-Epigallocatechin 3-O
-(3-O
-Methyl) Gallate (EGCG3″Me). Mol Nutr Food Res 2018; 62:e1800274. [DOI: 10.1002/mnfr.201800274] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 04/17/2018] [Indexed: 12/13/2022]
Affiliation(s)
- Xin Zhang
- Department of Food Science and Engineering; School of Marine Sciences; Ningbo University; Ningbo 315211 P. R. China
- Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang Province; Ningbo University; Ningbo 315211 P. R. China
| | - Yuhui Chen
- Department of Food Science and Engineering; School of Marine Sciences; Ningbo University; Ningbo 315211 P. R. China
| | - Jieyu Zhu
- Department of Food Science; Rutgers University; New Brunswick NJ 08901 USA
| | - Man Zhang
- Department of Food Science; Rutgers University; New Brunswick NJ 08901 USA
| | - Chi-Tang Ho
- Department of Food Science; Rutgers University; New Brunswick NJ 08901 USA
| | - Qingrong Huang
- Department of Food Science; Rutgers University; New Brunswick NJ 08901 USA
| | - Jinxuan Cao
- Department of Food Science and Engineering; School of Marine Sciences; Ningbo University; Ningbo 315211 P. R. China
- Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang Province; Ningbo University; Ningbo 315211 P. R. China
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Abstract
Global obesity rates have increased exponentially in recent decades. People are becoming obese younger, morbid obesity is increasing and the full health implications are only beginning to be seen. This article discusses the latest epidemiological data on obesity in adults and children, and systemically reviews the complications associated with the condition.
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Affiliation(s)
- D Kinlen
- From the Obesity Immunology Group, Education and Research Centre, St Vincent's University Hospital, University College Dublin, Dublin 4, Ireland
- National Children's Research Centre, Crumlin, Dublin 12, Ireland
- Department of Diabetes and Endocrinology, Our Lady's Children's Hospital, Crumlin, Dublin 12, Ireland
| | - D Cody
- National Children's Research Centre, Crumlin, Dublin 12, Ireland
- Department of Diabetes and Endocrinology, Our Lady's Children's Hospital, Crumlin, Dublin 12, Ireland
| | - D O'Shea
- From the Obesity Immunology Group, Education and Research Centre, St Vincent's University Hospital, University College Dublin, Dublin 4, Ireland
- Department of Endocrinology, St Columcille's Hospital, Loughlinstown, Co. Dublin, Ireland
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[Sardine purified proteins improve blood pressure, glycemic control, anti-atherogenic metabolic pathways and antioxidant capacity in obese rats]. Ann Cardiol Angeiol (Paris) 2018; 67:154-160. [PMID: 29753426 DOI: 10.1016/j.ancard.2018.04.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 04/24/2018] [Indexed: 11/22/2022]
Abstract
AIM OF THE STUDY The effects of sardine by-products (SBy-P) and fillet proteins (SF-P) were compared to casein (Cas) ; these effects were assessed on blood pressure, glycemic control, reverse cholesterol transport, lipid peroxidation and total antioxidant capacity in obese rats. MATERIALS AND METHODS Eighteen male Wistar rats were subjected for three months, to a high-fat diet. The obese rats were divided into three groups and consumed the same high-fat diet for 28 days after addition of either, 20% SBy-P, SF-P or Cas. RESULTS The sardine proteins (SBy-P and SF-P) compared respectively to Cas, reduced diastolic (-14%, -11% P<0.05) and systolic pressures (-12%, -8% P<0.05), blood glucose (-24%, -21% P<0.05), glycated hemoglobin (-28%, -21% P<0.05), insulinemia (-29%, -18% P<0.05) and HOMA-IR index (-29%, -18% P<0.05). They improve the reverse cholesterol transport by increasing the lecithin: cholesterol acyltransferase (LCAT) activity (+43%, +30% P<0.05) and high-density lipoproteins in cholesterol esters (+108%, +88% P<0.05), and decreasing the atherogenicity ratios and membrane fluidity (P<0.05). Furthermore, SBy-P and SF-P induced a reduction of reactive thiobarbituric acid substances concentrations in heart (-45%, -25% P<0.05), aorta (-62%, -41% P<0.05), liver (-40%, -21% P<0.05) and adipose tissue (-50%, -37% P<0.05) with an improvement in antioxidant capacity. CONCLUSION Sardine proteins, in particular those extracted from by-products, because of their hypotensive, hypoglycemic, anti-atherogenic and antioxidant properties, may have protective effects against the cardiovascular risk associated with obesity.
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Prado NJ, Ferder L, Manucha W, Diez ER. Anti-Inflammatory Effects of Melatonin in Obesity and Hypertension. Curr Hypertens Rep 2018; 20:45. [PMID: 29744660 DOI: 10.1007/s11906-018-0842-6] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
PURPOSE OF REVIEW Here, we review the known relations between hypertension and obesity to inflammation and postulate the endogenous protective effect of melatonin and its potential as a therapeutic agent. We will describe the multiple effects of melatonin on blood pressure, adiposity, body weight, and focus on mitochondrial-related anti-inflammatory and antioxidant protective effects. RECENT FINDINGS Hypertension and obesity are usually associated with systemic and tissular inflammation. The progressive affection of target-organs involves multiple mediators of inflammation, most of them redundant, which make anti-inflammatory strategies ineffective. Melatonin reduces blood pressure, body weight, and inflammation. The mechanisms of action of this ancient molecule of protection involve multiple levels of action, from subcellular to intercellular. Mitochondria is a key inflammatory element in vascular and adipose tissue and a potential pharmacological target. Melatonin protects against mitochondrial dysfunction. Melatonin reduces blood pressure and adipose tissue dysfunction by multiple anti-inflammatory/antioxidant actions and provides potent protection against mitochondria-mediated injury in hypertension and obesity. This inexpensive and multitarget molecule has great therapeutic potential against both epidemic diseases.
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Affiliation(s)
- Natalia Jorgelina Prado
- Instituto de Medicina y Biología Experimental de Cuyo (IMBECU), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Mendoza, Argentina
| | - León Ferder
- Pediatric Department Nephrology Division, Miller School of Medicine, University of Miami, Florida, USA
| | - Walter Manucha
- Instituto de Medicina y Biología Experimental de Cuyo (IMBECU), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Mendoza, Argentina.,Área de Farmacología, Facultad de Ciencias Médicas, Universidad Nacional de Cuyo, Mendoza, Argentina
| | - Emiliano Raúl Diez
- Instituto de Medicina y Biología Experimental de Cuyo (IMBECU), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Mendoza, Argentina. .,Instituto de Fisiología, Facultad de Ciencias Médicas, Universidad Nacional de Cuyo, Centro Universitario, CP 5500, Mendoza, Argentina.
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Simas BB, Nunes EA, Crestani CC, Speretta GF. Cardiovascular and metabolic consequences of the association between chronic stress and high-fat diet in rats. Stress 2018; 21:247-256. [PMID: 29429380 DOI: 10.1080/10253890.2018.1437413] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Obesity and chronic stress are considered independent risk factors for the development of cardiovascular diseases and changes in autonomic system activity. However, the cardiovascular consequences induced by the association between high-fat diet (HFD) and chronic stress are not fully understood. We hypothesized that the association between HFD and exposure to a chronic variable stress (CVS) protocol for four weeks might exacerbate the cardiovascular and metabolic disturbances in rats when compared to these factors singly. To test this hypothesis, male Wistar rats were divided into four groups: control-standard chow diet (SD; n = 8); control-HFD (n = 8); CVS-SD (n = 8); and CVS-HFD (n = 8). The CVS consisted of repeated exposure of the rats to different inescapable and unpredictable stressors (restraint tress; damp sawdust, cold, swim stress and light cycle inversion). We evaluated cardiovascular function, autonomic activity, dietary intake, adiposity and metabolism. The HFD increased body weight, adiposity and blood glucose concentration (∼15%) in both control and CVS rats. The CVS-HFD rats showed decreased insulin sensitivity (25%) compared to CVS-SD rats. The control-HFD and CVS-HFD rats presented increased intrinsic heart rate (HR) values (∼8%). CVS increased cardiac sympathetic activity (∼65%) in both SD- and HFD-fed rats. The HFD increased basal HR (∼10%). Blood pressure and baroreflex analyzes showed no differences among the experimental groups. In conclusion, the present data indicate absence of interaction on autonomic imbalance evoked by either CVS or HFD. Additionally, HFD increased HR and evoked metabolic disruptions which are independent of stress exposure.
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Affiliation(s)
- Bruna B Simas
- a Department of Physiological Sciences, Biological Sciences Centre , Federal University of Santa Catarina (UFSC) , Florianópolis , Brazil
| | - Everson A Nunes
- a Department of Physiological Sciences, Biological Sciences Centre , Federal University of Santa Catarina (UFSC) , Florianópolis , Brazil
| | - Carlos C Crestani
- b Laboratory of Pharmacology , São Paulo State University (UNESP), School of Pharmaceutical Sciences , Araraquara , Brazil
| | - Guilherme F Speretta
- a Department of Physiological Sciences, Biological Sciences Centre , Federal University of Santa Catarina (UFSC) , Florianópolis , Brazil
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Role of cannabinoid receptor type 1 in rostral ventrolateral medulla in high-fat diet-induced hypertension in rats. J Hypertens 2018; 36:801-808. [PMID: 29493561 DOI: 10.1097/hjh.0000000000001621] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Stimulation of cannabinoid type 1 (CB1) receptor in the rostral ventrolateral medulla (RVLM) increases renal sympathetic activity (RSNA) and blood pressure (BP) in rats. Thus, we hypothesized that CB1 receptor in the RVLM may play a critical role in the development of obesity-induced hypertension. METHODS To this end, we evaluated the levels of endocannabinoids and CB1 receptors in the RVLM in high-fat diet (HFD)-induced hypertensive rats. We then used pharmacological and molecular methods to examine the role of RVLM CB1 receptors in regulation of BP, heart rate (HR), and RSNA in obesity-induced hypertensive rats. RESULTS We found that HFD-fed rats exhibited higher basal BP, HR, and RSNA than standard diet-fed rats, which were associated with increased levels of endocannabinoids and CB1 receptor expression in the RVLM. Furthermore, unilateral intra-RVLM microinjections of AM251 (0, 100, or 500 nM/0.5 μl/site) dose-dependently decreased BP, HR, and RSNA to a greater extent in HFD-fed rats than in standard diet-fed rats. Finally, siRNA-mediated knockdown of CB1 receptor expression in the RVLM robustly decreased BP, HR, and RSNA in HFD-fed rats. CONCLUSION Taken together, our results suggested that enhanced CB1 receptor-mediated neurotransmissions in the RVLM may play a role in the development of obesity-induced hypertension.
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Rezende AC, Souza LG, Jardim TV, Perillo NB, Araújo YCL, de Souza SG, Sousa ALL, Moreira HG, de Souza WKSB, do Rosário Gondim Peixoto M, Jardim PCBV. Is waist-to-height ratio the best predictive indicator of hypertension incidence? A cohort study. BMC Public Health 2018; 18:281. [PMID: 29478413 PMCID: PMC6389116 DOI: 10.1186/s12889-018-5177-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Accepted: 02/16/2018] [Indexed: 02/08/2023] Open
Abstract
Background The best anthropometric indicator to verify the association between obesity and hypertension (HTN) has not been established. We conducted this study to evaluate and compare the discriminatory power of waist-to-height ratio (WHtR) in relation to body mass index (BMI) and waist circumference (WC) in predicting HTN after 13 years of follow-up. Methods This study was an observational prospective cohort study performed in the city of Firminópolis, in Brazilian’s midwest. The cohort baseline (phase 1) was initiated in 2002 with the evaluation of a representative sample of the normotensive population (≥ 18 years of age). The incidence of HTN was evaluated as the outcome (phase 2). Sociodemographic, dietary and lifestyle variables were used to adjust proportional hazards models and evaluate risk of HTN according to anthropometric indices. The areas under the receiver operating characteristic (ROC) curves were used to compare the predictive capacity of these indices. The best HTN predictor cut-offs were obtained based on sensitivity and specificity. Results A total of 471 patients with a mean age of 38.9 ± 12.3 years were included in phase 1. The mean follow-up was 13.2 years, and 207 subjects developed HTN. BMI, WC and WHtR were associated with risk of HTN incidence and had similar power in predicting the disease. However, the associations were only significant for women. The cut-off points with a better HTN predictive capacity were in agreement with current recommendations, except for the WC in men. Conclusions The results suggest that both overall obesity (BMI) and central obesity (WC and WHtR) anthropometric indicators can be used in this population to evaluate the risk of developing hypertension. Electronic supplementary material The online version of this article (10.1186/s12889-018-5177-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ana Carolina Rezende
- Nutrition and Health Post Graduation Program, Nutrition School, Federal University of Goiás, Rua 227, Quadra 68 s/n. Setor Leste Universitário, Goiânia, Goiás, 74.605-080, Brazil. .,, Goiânia, Brazil.
| | - Ludimila Garcia Souza
- Nutrition and Health Post Graduation Program, Nutrition School, Federal University of Goiás, Rua 227, Quadra 68 s/n. Setor Leste Universitário, Goiânia, Goiás, 74.605-080, Brazil
| | - Thiago Veiga Jardim
- Hypertension League, Federal University of Goiás, Avenida Primeira Avenida, s/n, Setor Leste Universitário, Goiânia, Goiás, 74605-020, Brazil
| | - Naiana Borges Perillo
- Hypertension League, Federal University of Goiás, Avenida Primeira Avenida, s/n, Setor Leste Universitário, Goiânia, Goiás, 74605-020, Brazil
| | - Ymara Cássia Luciana Araújo
- Hypertension League, Federal University of Goiás, Avenida Primeira Avenida, s/n, Setor Leste Universitário, Goiânia, Goiás, 74605-020, Brazil
| | - Samanta Garcia de Souza
- Hypertension League, Federal University of Goiás, Avenida Primeira Avenida, s/n, Setor Leste Universitário, Goiânia, Goiás, 74605-020, Brazil
| | - Ana Luiza Lima Sousa
- Hypertension League, Federal University of Goiás, Avenida Primeira Avenida, s/n, Setor Leste Universitário, Goiânia, Goiás, 74605-020, Brazil
| | - Humberto Graner Moreira
- Hypertension League, Federal University of Goiás, Avenida Primeira Avenida, s/n, Setor Leste Universitário, Goiânia, Goiás, 74605-020, Brazil
| | - Weimar Kunz Sebba Barroso de Souza
- Hypertension League, Federal University of Goiás, Avenida Primeira Avenida, s/n, Setor Leste Universitário, Goiânia, Goiás, 74605-020, Brazil
| | - Maria do Rosário Gondim Peixoto
- Nutrition and Health Post Graduation Program, Nutrition School, Federal University of Goiás, Rua 227, Quadra 68 s/n. Setor Leste Universitário, Goiânia, Goiás, 74.605-080, Brazil
| | - Paulo César Brandão Veiga Jardim
- Hypertension League, Federal University of Goiás, Avenida Primeira Avenida, s/n, Setor Leste Universitário, Goiânia, Goiás, 74605-020, Brazil
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Le Jemtel TH, Richardson W, Samson R, Jaiswal A, Oparil S. Pathophysiology and Potential Non-Pharmacologic Treatments of Obesity or Kidney Disease Associated Refractory Hypertension. Curr Hypertens Rep 2017; 19:18. [PMID: 28243928 DOI: 10.1007/s11906-017-0713-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
PURPOSE OF REVIEW The review assesses the role of non-pharmacologic therapy for obesity and chronic kidney disease (CKD) associated refractory hypertension (rf HTN). RECENT FINDINGS Hypertensive patients with markedly heightened sympathetic nervous system (SNS) activity are prone to develop refractory hypertension (rfHTN). Patients with obesity and chronic kidney disease (CKD)-associated HTN have particularly heightened SNS activity and are at high risk of rfHTN. The role of bariatric surgery is increasingly recognized in treatment of obesity. Current evidence advocates for a greater role of bariatric surgery in the management of obesity-associated HTN. In contrast, renal denervation does not appear have a role in the management of obesity or CKD-associated HTN. The role of baroreflex activation as adjunctive anti-hypertensive therapy remains to be defined.
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Affiliation(s)
- Thierry H Le Jemtel
- Division of Cardiology, Tulane University Medical Center, New Orleans, Louisiana, USA. .,Division of Cardiology, Tulane University School of Medicine, 1430 Tulane Ave SL-42, New Orleans, LA, 70112, USA.
| | - William Richardson
- Department of Surgery, Ochsner Health System, New Orleans, Louisiana, USA
| | - Rohan Samson
- Division of Cardiology, Tulane University Medical Center, New Orleans, Louisiana, USA
| | - Abhishek Jaiswal
- Division of Cardiology, Tulane University Medical Center, New Orleans, Louisiana, USA
| | - Suzanne Oparil
- Division of Cardiovascular Disease, University of Alabama, Birmingham, AL, USA
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Samson R, Qi A, Jaiswal A, Le Jemtel TH, Oparil S. Obesity-Associated Hypertension: the Upcoming Phenotype in African-American Women. Curr Hypertens Rep 2017; 19:41. [DOI: 10.1007/s11906-017-0738-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Huang J, Lin X, Xue B, Luo J, Gao L, Wang Y, Ou S, Peng X. Impact of polyphenols combined with high-fat diet on rats' gut microbiota. J Funct Foods 2016. [DOI: 10.1016/j.jff.2016.08.042] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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