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Nyarko SH, Addo IY, Ayebeng C, Dickson KS, Acquah E. Mediating effects of hypertension in association between household wealth disparities and diabetes among women of reproductive age: analysis of eight countries in sub-Saharan Africa. Int Health 2024:ihae013. [PMID: 38321706 DOI: 10.1093/inthealth/ihae013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 12/19/2023] [Accepted: 01/15/2024] [Indexed: 02/08/2024] Open
Abstract
BACKGROUND Diabetes prevalence appears to be increasing in low- and middle-income countries, yet little is known about how hypertension status mediates the association between household wealth and diabetes. This study examined the mediation effects of hypertension in associations between household wealth and diabetes in eight sub-Saharan African (SSA) countries. METHODS This is a cross-sectional study of 71 577 women from recent Demographic and Health Surveys for eight SSA countries. Sample-weighted logistic regression and causal mediation analyses were conducted. RESULTS Of the 71 577 women, 1.1% (782) reported ever being diagnosed with diabetes. Women with diabetes were more likely to have hypertension compared with those without diabetes (54.9% vs 9.9%). The odds of diabetes were significantly higher among women with hypertension (adjusted odds ratio [OR] 5.71 [95% confidence interval {CI} 4.62 to 7.05]) and women from rich households (adjusted OR 1.65 [95% CI 1.23 to 2.22]) compared with their respective counterparts. Hypertension status mediated 27.4% of the association between household wealth and diabetes status. CONCLUSIONS Hypertension status partly contributes to the associations between household wealth disparities and diabetes status among women in the selected countries. Further research and targeted interventions are needed to explore specific mechanisms and confounding factors related to household wealth disparities, hypertension status and diabetes prevalence in this population.
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Affiliation(s)
- Samuel H Nyarko
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA
| | - Isaac Y Addo
- Centre for Social Research in Health, University of New South Wales, Sydney, NSW, Australia
| | - Castro Ayebeng
- Department of Population and Health, University of Cape Coast, Cape Coast, Ghana
- Department of Research and Advocacy, Challenging Heights, Winneba, Ghana
| | - Kwamena S Dickson
- Department of Population and Health, University of Cape Coast, Cape Coast, Ghana
| | - Evelyn Acquah
- Centre for Health Policy and Implementation Research, Institute of Health Research, University of Health and Allied Sciences, Ho, Ghana
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Mengoa MGR, Rangel BT, Garcia AAMN, Sugio CYC, Gomes ACG, Sugio CTC, Orikasa GT, Neppelenbroek KH. The challenge of dietary management in soft drink consumption and its oral and systemic repercussions. Nutr Health 2023; 29:395-402. [PMID: 36349359 DOI: 10.1177/02601060221136356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Background:Soft drinks are drinks high in sugar and acidity, but low in nutritional benefits. Despite its great popularity, its consumption is alerted due to the numerous systemic harm caused. Aim:This work aims to provide information and critically review the literature on the risk of soft drink consumption in an integrative view with nutritional, dental, and medical aspects. Methods:A search was carried out based on the identification of the theme, determination of inclusion and exclusion criteria, selection of databases for research and, finally, the reading, interpretation, and discussion of the selected sources. A search was conducted using the keywords: "soft drinks" AND "obesity" OR "dental erosion" OR "diabetes" OR "hypertension" OR "mental health" OR "multimorbidities" in databases PubMed, SciELO, and LILACS between 2017 and 2022. Results:Seventy-six studies were included in the article after the qualitative synthesis. Conclusion:We conclude that the high consumption of soft drinks is associated with oral and general diseases. Therefore, a multi-professional approach to guide patients to moderate the consumption of these beverages is extremely important.
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Affiliation(s)
- Maria Gabriela Robles Mengoa
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
| | - Bianca Tavares Rangel
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
| | | | - Carolina Yoshi Campos Sugio
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
| | - Anna Clara Gurgel Gomes
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
| | | | | | - Karin Hermana Neppelenbroek
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
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Li M, Gong W, Wang S, Li Z. Relationship between high fructose corn syrup sweetened drinks, diet soft drinks, and serum sodium: NHANES 2003-2006. Nutr J 2022; 21:76. [PMID: 36581871 PMCID: PMC9798711 DOI: 10.1186/s12937-022-00832-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 12/26/2022] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Consumption of high fructose corn syrup sweetened drinks and diet soft drinks has increased in the United States. However, the relationship between the intake of high fructose corn syrup sweetened drinks and diet soft drinks, and serum sodium has been scarcely studied. Our objective is to evaluate the relation between intake of high fructose corn syrup sweetened drinks and diet soft drinks, and serum sodium, and explore the possible effect modifiers in a nationally representative sample of adults from the United States. METHODS We conducted a cross-sectional study using data from the National Health and Nutrition Examination Survey 2003-2006. The study participants included 6989 adults aged ≥18 years. Using survey-weighted generalized linear regression analyses, we investigated the relationship between high fructose corn syrup sweetened drink, diet soft drink consumption, and serum sodium. Consumption of high fructose corn syrup sweetened drinks and diet soft drinks was evaluated through a food-frequency questionnaire. RESULTS Serum sodium levels increased as high fructose corn syrup sweetened drink intake increased. Serum sodium levels were higher in participants in the highest high fructose corn syrup sweetened drink consumption quantile, compared with those in the lowest high fructose corn syrup sweetened drink intake quantile (p = 0.020). The multivariate betas for serum sodium, according to the corresponding high fructose corn syrup sweetened drink intake quantiles, were 0.16, 0.19, and 0.21, respectively (P for trend = 0.051). We found no relationship between diet soft drink consumption and serum sodium after adjustment of confounding. (multivariate P > 0.05). CONCLUSION There was a a step-wise increase in serum sodium concentration with increasing consumption of HFCS sweetened beverages. Even moderate HFCS sweetened soft drink intake was associated with an elevated serum sodium level - a risk factor for hypertension.
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Affiliation(s)
- Mingxi Li
- grid.24696.3f0000 0004 0369 153XDepartment of Traditional Chinese Medicine, Beijing Rehabilitation Hospital, Capital Medical University, Xixiazhuang Badachu, Shijingshan District, Beijing, 100144 China
| | - Weijun Gong
- grid.24696.3f0000 0004 0369 153XDepartment of Traditional Chinese Medicine, Beijing Rehabilitation Hospital, Capital Medical University, Xixiazhuang Badachu, Shijingshan District, Beijing, 100144 China
| | - Shidong Wang
- grid.24695.3c0000 0001 1431 9176Department of Endocrinology, Dongzhimen Hospital, Beijing University of Chinese Medicine, No.5 Haiyuncang, Dongcheng District, Beijing, 100700 China
| | - Zhe Li
- Department of Endocrinology, Dongzhimen Hospital, Beijing University of Chinese Medicine, No.5 Haiyuncang, Dongcheng District, Beijing, 100700, China.
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4
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Shen WC, Sun ZJ, Chou CY, Chou YT, Lu FH, Yang YC, Chang CJ, Wu JS. Association of simple renal cysts with metabolic syndrome in adults. Front Public Health 2022; 10:951638. [PMID: 36408037 PMCID: PMC9669605 DOI: 10.3389/fpubh.2022.951638] [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: 05/24/2022] [Accepted: 08/22/2022] [Indexed: 11/06/2022] Open
Abstract
Background and aims Metabolic syndrome is common nowadays and may increase risk of hypertension, type 2 diabetes mellitus, cardiovascular complications and even mortality. Renal cysts are also frequently found during routine examination. However, the relationship between simple renal cysts (SRCs) and metabolic syndrome remains unclear. This study aimed to investigate the association of SRCs with metabolic syndrome. Methods A total of 16,216 subjects aged ≥18 years were enrolled in this study. SRCs were diagnosed with ultrasonography by finding: sharp, thin posterior walls, a round/oval shape, absence of internal echoes, and posterior enhancement. SRCs were categorized by number (0, 1, and ≥2) and size (<2 and ≥2 cm). Metabolic syndrome was diagnosed according to the consensus statement from the International Diabetes Federation. Results In multivariate analysis, SRCs were positively related to metabolic syndrome (OR: 1.18, 95% CI: 1.06-1.34). The risk of metabolic syndrome was higher for SRCs with a number ≥2 (OR: 1.35, 95% CI: 1.08-1.68) and size ≥2 cm (OR: 1.33, 95% CI: 1.10-1.61). When considering the SRC number and size concomitantly, SRCs with a number ≥2/size ≥2 cm (OR: 1.42, 95% CI: 1.02-1.98) or <2/size ≥2 cm (OR: 1.30, 95% CI: 1.04-1.62) were positively related to metabolic syndrome. Conclusions Simple renal cysts were found to be related to a higher risk of metabolic syndrome, and the association is more significant in those with larger (sizes ≥2cm) or plural (numbers ≥2) SRCs.
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Affiliation(s)
- Wei-Chen Shen
- Department of Family Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Zih-Jie Sun
- Department of Family Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan,Division of Family Medicine, National Cheng Kung University Hospital Dou-Liou Branch, College of Medicine, National Cheng Kung University, Yunlin, Taiwan
| | - Chieh-Ying Chou
- Department of Family Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yu-Tsung Chou
- Department of Family Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan,Department of Health Management Center, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Feng-Hwa Lu
- Department of Family Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan,Department of Family Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yi-Ching Yang
- Department of Family Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan,Department of Family Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chih-Jen Chang
- Department of Family Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan,Department of Family Medicine, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chia-Yi, Taiwan
| | - Jin-Shang Wu
- Department of Family Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan,Division of Family Medicine, National Cheng Kung University Hospital Dou-Liou Branch, College of Medicine, National Cheng Kung University, Yunlin, Taiwan,Department of Family Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan,*Correspondence: Jin-Shang Wu
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Zhu Y, Li G, Laukkanen JA, Song X, Zhang J, Wei L, Chen X, Li Y, Liu C. Higher neutrophil to lymphocyte ratio is associated with renal dysfunction and cardiac adverse remodeling in elderly with metabolic syndrome. Front Cardiovasc Med 2022; 9:921204. [PMID: 36158844 PMCID: PMC9492939 DOI: 10.3389/fcvm.2022.921204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 08/15/2022] [Indexed: 11/17/2022] Open
Abstract
Background Previous studies have shown that metabolic syndrome (MetS) is associated with increased systemic inflammation and cardiac mortality in elderly subjects. However, information on the association of inflammation markers with cardiac adverse remodeling is limited in the elderly with MetS. Therefore, we investigated whether the inflammatory marker neutrophil/lymphocyte ratio (NLR) is associated with the cardiac adverse remodeling in Chinese elderly with MetS. Methods A total of 1,087 hospitalized Chinese elderly (aged ≥ 65 years) with MetS were collected retrospectively. The cross-sectional data of echocardiography and clinical parameters were compared among quartile NLR groups. Results In the elderly with MetS, higher quartile NLR (≥3.83) was found to be associated with male gender, older age, lower estimated glomerular filtration rate (eGFR), and cardiac left ventricular (LV) dilatation (all p <0.05). Conclusion Higher NLR is associated with male gender, older age, renal dysfunction, and cardiac adverse remodeling in Chinese elderly with MetS.
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Affiliation(s)
- Yuqi Zhu
- Division of Cardiology, Department of Geriatrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Gang Li
- Division of Cardiology, Department of Geriatrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
- *Correspondence: Gang Li
| | - Jari A. Laukkanen
- Institute of Public Health and Clinical Nutrition, University of Eastern Finland, Kuopio, Finland
- Department of Medicine, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland
- Department of Medicine, Central Finland Health Care District, Jyväskylä, Finland
| | - Xing Song
- Division of Cardiology, Department of Geriatrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jing Zhang
- Division of Cardiology, Department of Geriatrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Linping Wei
- Division of Cardiology, Department of Geriatrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xinrui Chen
- Division of Cardiology, Department of Geriatrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yufeng Li
- Division of Cardiology, Department of Geriatrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Cheng Liu
- Division of Cardiology, Department of Geriatrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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Meher BR, Mohanty RR, Sahoo JP, Jena M, Srinivasan A, Padhy BM. Comparative Study of the Effects of Azilsartan and Telmisartan on Insulin Resistance and Metabolic Biomarkers in Essential Hypertension Associated With Type 2 Diabetes Mellitus. Cureus 2022; 14:e22301. [PMID: 35350513 PMCID: PMC8933292 DOI: 10.7759/cureus.22301] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/16/2022] [Indexed: 11/05/2022] Open
Abstract
Introduction The complex interplay between the autonomic nervous system, renin-angiotensin-aldosterone system (RAAS), and immunity contributes to the pathogenesis of hypertension in diabetes mellitus. The objective of this study was to investigate and compare the effect of azilsartan and telmisartan on insulin resistance and metabolic biomarkers in patients with both hypertension and type 2 diabetes mellitus. Methods The present study was a prospective, randomized, active-controlled, open-label, parallel-group clinical trial. Patients with grade I or II essential hypertension with type 2 diabetes mellitus were randomized into two groups of 25 patients each. Baseline evaluation of homeostasis model assessment-insulin resistance (HOMA-IR), plasma glucose, insulin, leptin and adiponectin levels, and systolic and diastolic blood pressure (SBP and DBP) of patients was done. Patients were reassessed after 12 weeks of drug therapy with azilsartan 40 mg OD (once daily) or telmisartan 40 mg OD. Results The mean changes in HOMA-IR from the baseline at the end of 12 weeks of treatment were 0.15 (−0.64, 0.94.52) in the azilsartan group and 0.32 (−0.61, 1.26) in the telmisartan group. The mean difference in the changes from the baseline in HOMA-IR between the two groups was 0.3 (−0.87, 1.48), which was not statistically significant. No statistically significant changes were observed between the two groups in metabolic biomarkers (leptin: -0.84, CI: -4.83 to 3.14, and adiponectin: -0.12, CI: -0.62 to 0.37). Systolic (SBP) and diastolic blood pressure (DBP) decreased at the end of the 12-week treatment in both the groups; however, there was no significant difference between the two groups (SBP: -2.6, CI: -10.35 to 5.1, and DBP: -3.0, CI: -7.7 to 1.7). Conclusion Neither azilsartan nor telmisartan had any significant effects on insulin resistance and metabolic biomarkers after 12 weeks of drug therapy in hypertension patients associated with type 2 diabetes mellitus. However, they showed a comparable antihypertensive effect. The adverse effects observed were mild in nature, and their incidence was comparable between the two groups.
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7
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Cao X, Shi T, Zhang C, Jin W, Song L, Zhang Y, Liu J, Yang F, Rotimi CN, Xu A, Yang J. ACE2 pathway regulates thermogenesis and energy metabolism. eLife 2022; 11:72266. [PMID: 35014608 PMCID: PMC8776250 DOI: 10.7554/elife.72266] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 01/09/2022] [Indexed: 12/02/2022] Open
Abstract
Identification of key regulators of energy homeostasis holds important therapeutic promise for metabolic disorders, such as obesity and diabetes. ACE2 cleaves angiotensin II (Ang II) to generate Ang-(1-7) which acts mainly through the Mas1 receptor. Here, we identify ACE2 pathway as a critical regulator in the maintenance of thermogenesis and energy expenditure. We found that ACE2 is highly expressed in brown adipose tissue (BAT) and that cold stimulation increases ACE2 and Ang-(1-7) levels in BAT and serum. Ace2 knockout mice (Ace2-/y) and Mas1 knockout mice (Mas1-/-) displayed impaired thermogenesis. Mice transplanted with brown adipose tissue from Mas1-/- display metabolic abnormalities consistent with those seen in the Ace2 and Mas1 knockout mice. In contrast, impaired thermogenesis of Leprdb/db obese diabetic mice and high-fat diet-induced obese mice were ameliorated by overexpression of Ace2 or continuous infusion of Ang-(1-7). Activation of ACE2 pathway was associated with improvement of metabolic parameters, including blood glucose, lipids, and energy expenditure in multiple animal models. Consistently, ACE2 pathway remarkably enhanced the browning of white adipose tissue. Mechanistically, we showed that ACE2 pathway activated Akt/FoxO1 and PKA pathway, leading to induction of UCP1 and activation of mitochondrial function. Our data propose that adaptive thermogenesis requires regulation of ACE2 pathway and highlight novel potential therapeutic targets for the treatment of metabolic disorders.
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Affiliation(s)
- Xi Cao
- Beijing Diabetes Institute, Beijing Key Laboratory of Diabetes Research and Care, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Tingting Shi
- Beijing Diabetes Institute, Beijing Key Laboratory of Diabetes Research and Care, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Chuanhai Zhang
- Department of Physiology, University of Texas Meical Center at Dallas, Dallas, United States
| | - Wanzhu Jin
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Lini Song
- Beijing Diabetes Institute, Beijing Key Laboratory of Diabetes Research and Care, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Yichen Zhang
- Beijing Diabetes Institute, Beijing Key Laboratory of Diabetes Research and Care, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Jingyi Liu
- Beijing Diabetes Institute, Beijing Key Laboratory of Diabetes Research and Care, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Fangyuan Yang
- Beijing Diabetes Institute, Beijing Key Laboratory of Diabetes Research and Care, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Charles N Rotimi
- National Human Genome Research Institute, National Institutes of Health, Bethesda, United States
| | - Aimin Xu
- Department of Medicine, University of Hong Kong, Hong Kong, Hong Kong
| | - Jinkui Yang
- Beijing Diabetes Institute, Beijing Key Laboratory of Diabetes Research and Care, Beijing Tongren Hospital, Capital Medical University, Beijing, China
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Wyparło-Wszelaki M, Machoń-Grecka A, Wąsik M, Dobrakowski M. Critical aspects of the physiological interactions between lead and magnesium. J Biochem Mol Toxicol 2021; 36:e22964. [PMID: 34766669 DOI: 10.1002/jbt.22964] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 09/21/2021] [Accepted: 10/26/2021] [Indexed: 12/25/2022]
Abstract
Despite technological progress, exposure to lead is an ongoing problem. There are many mechanisms governing the toxic effects of lead on the human body. One such mechanism involves the interaction of this xenobiotic with bivalent metal ions, including magnesium. Literature data suggest that the competition between these elements for binding sites at the molecular and cellular levels, as well as at the systemic level, may represent an important aspect of lead toxicity in the human body. This is especially clear in the context of oxidative stress, immune response, and gene expression modifications. This review aims to summarize current knowledge regarding these issues.
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Affiliation(s)
- Magdalena Wyparło-Wszelaki
- Department of Biochemistry, School of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia, Zabrze, Poland
| | - Anna Machoń-Grecka
- Department of Biochemistry, School of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia, Zabrze, Poland
| | - Marta Wąsik
- Department of Clinical Biochemistry and Laboratory Diagnostics, Institute of Medicine, University of Opole, Opole, Poland
| | - Michał Dobrakowski
- Department of Biochemistry, School of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia, Zabrze, Poland
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Mano J, Saku K, Kinoshita H, Mannoji H, Kanaya S, Sunagawa K. Aging steepens the slope of power spectrum density of 30-minute continuous blood pressure recording in healthy human subjects. PLoS One 2021; 16:e0248428. [PMID: 33735286 PMCID: PMC7971546 DOI: 10.1371/journal.pone.0248428] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 02/25/2021] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND The increase of blood pressure (BP) variability (BPV) is recognized as an important additional cardiovascular risk factor in both normotensive subjects and hypertensive patients. Aging-induced atherosclerosis and autonomic dysfunction impair the baroreflex and, in turn, augment 24-hour BPV. In small and large animal experiments, impaired baroreflex steepens the slope of the power spectrum density (PSD) of continuous BP in the frequency range of 0.01 to 0.1 Hz. Although the repeated oscillometric BP recording over 24 hours or longer is a prerequisite to quantify BPV in humans, how the very short-term continuous BP recording reflects BPV remains unknown. This study aimed to evaluate the impact of aging on the very short-term (30-min) BPV in healthy human subjects by frequency analysis. METHODS We recorded continuous BP tonometrically for 30 min in 56 healthy subjects aged between 28 and 85 years. Considering the frequency-dependence of the baroreflex dynamic function, we estimated the PSD of BP in the frequency range of 0.01 to 0.1 Hz, and compared the characteristics of PSD among four age groups (26-40, 41-55, 56-70 and 71-85 years). RESULTS Aging did not significantly alter mean and standard deviation (SD) of BP among four age groups. PSD was nearly flat around 0.01 Hz and decreased gradually as the frequency increased. The slope of PSD between 0.01 and 0.1 Hz was steeper in older subjects (71 years or older) than in younger subjects (55 years or younger) (p < 0.05). CONCLUSIONS Aging steepened the slope of PSD of BP between 0.01 and 0.1 Hz. This phenomenon may partly be related to the deterioration of the baroreflex in older subjects. Our proposed method to evaluate very short-term continuous BP recordings may contribute to the stratification of BPV.
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Affiliation(s)
- Jumpei Mano
- Graduate School of Science and Technology, Nara Institute of Science and Technology, Nara, Japan
- Technology Development HQ, OMRON Healthcare Co., Ltd., Kyoto, Japan
| | - Keita Saku
- Department of Cardiovascular Dynamics, National Cerebral and Cardiovascular Center Research Institute, Osaka, Japan
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
- * E-mail:
| | - Hiroyuki Kinoshita
- Graduate School of Science and Technology, Nara Institute of Science and Technology, Nara, Japan
- Technology Development HQ, OMRON Healthcare Co., Ltd., Kyoto, Japan
| | - Hiroshi Mannoji
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Shigehiko Kanaya
- Graduate School of Science and Technology, Nara Institute of Science and Technology, Nara, Japan
| | - Kenji Sunagawa
- Circulatory System Research Foundation, Fukuoka, Japan
- Department of Therapeutic Regulation of Cardiovascular Homeostasis, Center for Disruptive Cardiovascular Medicine, Kyushu University, Fukuoka, Japan
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Su H, Ma C, Li H. Anti-infection mechanism of phosphodiesterase-5 inhibitors and their roles in coronavirus disease 2019 (Review). Exp Ther Med 2021; 21:320. [PMID: 33732293 PMCID: PMC7903479 DOI: 10.3892/etm.2021.9751] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 01/19/2021] [Indexed: 11/11/2022] Open
Abstract
Coronavirus disease 2019 (COVID-19) has a variety of impacts on the human body. Severe acute respiratory syndrome coronavirus 2 is the pathogen that causes COVID-19. It invades human tissues through the receptor angiotensin-converting enzyme 2, resulting in an imbalance in the angiotensin II (AngII) level and upregulation of renin-angiotensin system/AngII pathway activity. Furthermore, the binding of AngII to its receptor leads to vasoconstriction, endothelial injury and intravascular thrombosis. In addition, COVID-19 may have adverse effects on male reproductive organs and a marked impact on male reproductive health. Phosphodiesterase-5 inhibitors (PDE5Is) may improve vascular endothelial function, promote testicular and systemic blood circulation and testosterone secretion and enhance epididymal function, as well as sperm maturation and capacitation. PDE5Is may also be of use in the treatment of infectious diseases by enhancing immunity and anti-inflammatory responses and improving vascular endothelial function. Based on the pharmacological mechanism of PDE5Is, they are of unique value in the fight against infectious diseases and may be effective in combination with direct antiviral drugs. The anti-infection mechanisms of PDE5Is and their roles in COVID-19 were reviewed in the present study.
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Affiliation(s)
- Hao Su
- Department of Urology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, P.R. China
| | - Chengquan Ma
- Department of Urology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, P.R. China
| | - Hongjun Li
- Department of Urology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, P.R. China
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Kim KM, Roh JH, Lee S, Yoon JH. Clinical implications of renin-angiotensin system inhibitors for development and progression of non-alcoholic fatty liver disease. Sci Rep 2021; 11:2884. [PMID: 33536442 PMCID: PMC7858633 DOI: 10.1038/s41598-021-81959-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Accepted: 01/13/2021] [Indexed: 02/06/2023] Open
Abstract
Recently, there has been an increasing interest in the therapeutic efficacy of RAS inhibitors (RASi) in patients with non-alcoholic fatty liver disease (NAFLD) because they may reduce oxidative stress, inflammatory markers, and enhanced fibrosis. An objective of this study was to investigate the role of RASi on NAFLD development and progression in a large cohort. We conducted a nested case-control study. Study subjects were classified into two study cohorts according to baseline NAFLD status: non-NAFLD (n = 184,581) and established NALFD (n = 27,565). An NAFLD development or progression case was defined as a patient with newly developed NAFLD or new progression of advanced fibrosis from non-NAFLD and established NALFD cohorts, respectively. A conditional logistic regression analysis was conducted to estimate the associations between RASi exposure and NAFLD development/progression. Overall, no significant association was evident between RASi use and NAFLD development or progression (NAFLD development; ever-user vs. never-user: OR 1.017; 95% CI 0.842-1.230, NAFLD progression; ever-user vs. never-user: aOR 0.942; 95% CI 0.803-1.105). RASi ever-use in cases of individuals who were obese or who had normal fasting plasma glucose (FPG) was associated with reduced risk of both NAFLD development (body mass index (BMI) ≥ 25 kg/m2: 0.708 [95% confidence interval (CI) 0.535-0.937], FPG of < 100 mg/mL: 0.774 [95% CI 0.606-0.987]) and progression (BMI ≥ 25 kg/m2: 0.668 [95% CI 0.568-0.784], FPG of < 100 mg/mL: 0.732 [95% CI 0.582-0.921]). The present study did not verify a significant overall association between RASi use and NAFLD development/progression but suggested that RASi might prevent NAFLD development and progression among specific subjects.
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Affiliation(s)
- Kwang Min Kim
- Department of Medicine, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, South Korea
| | - Ji-Hye Roh
- College of Pharmacy, Pusan National University, Busan, South Korea
| | - Sangjin Lee
- Department of Statistics, College of Natural Science, Pusan National University, Busan, South Korea
| | - Jeong-Hyun Yoon
- College of Pharmacy, Pusan National University, Busan, South Korea.
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12
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Verma A, Zhu P, Xu K, Du T, Liao S, Liang Z, Raizada MK, Li Q. Angiotensin-(1-7) Expressed From Lactobacillus Bacteria Protect Diabetic Retina in Mice. Transl Vis Sci Technol 2020; 9:20. [PMID: 33344064 PMCID: PMC7735952 DOI: 10.1167/tvst.9.13.20] [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: 06/17/2020] [Accepted: 11/03/2020] [Indexed: 01/04/2023] Open
Abstract
Purpose A multitude of animal studies substantiates the beneficial effects of Ang-(1–7), a peptide hormone in the protective axis of the renin angiotensin system, in diabetes and its associated complications including diabetic retinopathy (DR). However, the clinical application of Ang-(1–7) is limited due to unfavorable pharmacological properties. As emerging evidence implicates gut dysbiosis in pathogenesis of diabetes and supports beneficial effects of probiotics, we sought to develop probiotics-based expression and delivery system to enhance Ang-(1–7) and evaluate the efficacy of engineered probiotics expressing Ang-(1–7) in attenuation of DR in animal models. Methods Ang-(1–7) was expressed in the Lactobacillus species as a secreted fusion protein with a trans-epithelial carrier to allow uptake into circulation. To evaluate the effects of Ang-(1–7) expressed from Lactobacillus paracasei (LP), adult diabetic eNOS−/− and Akita mice were orally gavaged with either 1 × 109 CFU of LP secreting Ang-(1–7) (LP-A), LP alone or vehicle, 3 times/week, for 8 and 12 weeks, respectively. Results Ang-(1–7) is efficiently expressed from different Lactobacillus species and secreted into circulation in mice fed with LP-A. Oral administration of LP-A significantly reduced diabetes-induced loss of retinal vascular capillaries. LP-A treatment also prevented loss of retinal ganglion cells, and significantly decreased retinal inflammatory cytokine expression in both diabetic eNOS−/− and Akita mice. Conclusions These results provide proof-of-concept for feasibility and efficacy of using engineered probiotic species as live vector for delivery of Ang-(1–7) with enhanced bioavailability. Translational Relevance Probiotics-based delivery of Ang-(1–7) may hold important therapeutic potential for the treatment of DR and other diabetic complications.
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Affiliation(s)
- Amrisha Verma
- Department of Ophthalmology, College of Medicine, University of Florida, Gainesville, Florida, USA
| | - Ping Zhu
- Department of Ophthalmology, College of Medicine, University of Florida, Gainesville, Florida, USA
| | - Kang Xu
- Department of Ophthalmology, College of Medicine, University of Florida, Gainesville, Florida, USA
| | - Tao Du
- Department of Ophthalmology, College of Medicine, University of Florida, Gainesville, Florida, USA
| | - Shengquan Liao
- Department of Ophthalmology, College of Medicine, University of Florida, Gainesville, Florida, USA
| | - Zhibing Liang
- Department of Ophthalmology, College of Medicine, University of Florida, Gainesville, Florida, USA
| | - Mohan K Raizada
- Physiology & Functional Genomics, College of Medicine, University of Florida, Gainesville, Florida, USA
| | - Qiuhong Li
- Department of Ophthalmology, College of Medicine, University of Florida, Gainesville, Florida, USA
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13
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Akoumianakis I, Filippatos T. The renin-angiotensin-aldosterone system as a link between obesity and coronavirus disease 2019 severity. Obes Rev 2020; 21:e13077. [PMID: 32567171 PMCID: PMC7362041 DOI: 10.1111/obr.13077] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Revised: 05/18/2020] [Accepted: 05/19/2020] [Indexed: 12/14/2022]
Abstract
Coronavirus disease 2019 (COVID-19), caused by the severe acute respiratory distress coronavirus 2 (SARS-CoV2), is a rapidly evolving pandemic challenging the world and posing unprecedented public health issues. Current data show that COVID-19 is associated with increased disease severity in individuals with obesity. Obesity is usually associated with dysregulated renin-angiotensin-aldosterone (RAAS) axis. RAAS has also been implicated in acute lung injury as well as myocardial injury and has thus attracted interest as a potential regulator of COVID-19 severity. Whilst research all over the world is still struggling to provide a detailed characterization of the biology of SARS-CoV2 and its associated disease profile, it has become evident that SARS-CoV2 uses the membrane-bound form of angiotensin-converting enzyme 2 (ACE2) as a receptor for cell internalization. ACE2 is a protective component of the RAAS axis and is downregulated after SARS-CoV2 infection. The RAAS axis could thus be a link between obesity and COVID-19 severity; therefore, more accurate understanding of the underlying mechanisms would be needed with the hope of proposing efficient therapeutic interventions.
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Affiliation(s)
- Ioannis Akoumianakis
- Metabolic Diseases Research Unit, Internal Medicine Laboratory, School of MedicineUniversity of CreteHeraklionGreece
- Cardiovascular Medicine Division, Radcliffe Department of MedicineUniversity of OxfordOxfordUK
| | - Theodosios Filippatos
- Metabolic Diseases Research Unit, Internal Medicine Laboratory, School of MedicineUniversity of CreteHeraklionGreece
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14
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Qin P, Li Q, Zhao Y, Chen Q, Sun X, Liu Y, Li H, Wang T, Chen X, Zhou Q, Guo C, Zhang D, Tian G, Liu D, Qie R, Han M, Huang S, Wu X, Li Y, Feng Y, Yang X, Hu F, Hu D, Zhang M. Sugar and artificially sweetened beverages and risk of obesity, type 2 diabetes mellitus, hypertension, and all-cause mortality: a dose-response meta-analysis of prospective cohort studies. Eur J Epidemiol 2020; 35:655-671. [PMID: 32529512 DOI: 10.1007/s10654-020-00655-y] [Citation(s) in RCA: 132] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Accepted: 06/06/2020] [Indexed: 12/20/2022]
Abstract
Although consumption of sugar-sweetened beverages (SSBs) and artificially sweetened beverages (ASBs) has increasingly been linked with obesity, type 2 diabetes mellitus, hypertension, and all-cause mortality, evidence remains conflicted and dose-response meta-analyses of the associations are lacking. We conducted an updated meta-analysis to synthesize the knowledge about their associations and to explore their dose-response relations. We comprehensively searched PubMed, EMBASE, Web of Science, and Open Grey up to September 2019 for prospective cohort studies investigating the associations in adults. Summary relative risks (RRs) and 95% confidence intervals (CIs) were estimated for the dose-response association. Restricted cubic splines were used to evaluate linear/non-linear relations. We included 39 articles in the meta-analysis. For each 250-mL/d increase in SSB and ASB intake, the risk increased by 12% (RR = 1.12, 95% CI 1.05-1.19, I2 = 67.7%) and 21% (RR = 1.21, 95% CI 1.09-1.35, I2 = 47.2%) for obesity, 19% (RR = 1.19, 95% CI 1.13-1.25, I2 = 82.4%) and 15% (RR = 1.15, 95% CI 1.05-1.26, I2 = 92.6%) for T2DM, 10% (RR = 1.10, 95% CI 1.06-1.14, I2 = 58.4%) and 8% (RR = 1.08, 95% CI 1.06-1.10, I2 = 24.3%) for hypertension, and 4% (RR = 1.04, 95% CI 1.01-1.07, I2 = 58.0%) and 6% (RR = 1.06, 95% CI 1.02-1.10, I2 = 80.8%) for all-cause mortality. For SSBs, restricted cubic splines showed linear associations with risk of obesity (Pnon-linearity = 0.359), T2DM (Pnon-linearity = 0.706), hypertension (Pnon-linearity = 0.510) and all-cause mortality (Pnon-linearity = 0.259). For ASBs, we found linear associations with risk of obesity (Pnon-linearity = 0.299) and T2DM (Pnon-linearity = 0.847) and non-linear associations with hypertension (Pnon-linearity = 0.019) and all-cause mortality (Pnon-linearity = 0.048). Increased consumption of SSBs and ASBs is associated with risk of obesity, T2DM, hypertension, and all-cause mortality. However, the results should be interpreted cautiously because the present analyses were based on only cohort but not intervention studies.
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Affiliation(s)
- Pei Qin
- Department of Biostatistics and Epidemiology, School of Public Health, Shenzhen University Health Science Center, No. 1066 Xueyuan Avenue, Nanshan District, Shenzhen, 518060, Guangdong, People's Republic of China
| | - Quanman Li
- Department of Biostatistics and Epidemiology, School of Public Health, Shenzhen University Health Science Center, No. 1066 Xueyuan Avenue, Nanshan District, Shenzhen, 518060, Guangdong, People's Republic of China
- The Affiliated Luohu Hospital of Shenzhen University Health Science Center, Shenzhen, Guangdong, People's Republic of China
| | - Yang Zhao
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Henan, People's Republic of China
| | - Qing Chen
- Department of Mental Health, Bao'an Chronic Diseases Prevent and Cure Hospital, Shenzhen, Guangdong, People's Republic of China
| | - Xizhuo Sun
- The Affiliated Luohu Hospital of Shenzhen University Health Science Center, Shenzhen, Guangdong, People's Republic of China
| | - Yu Liu
- The Affiliated Luohu Hospital of Shenzhen University Health Science Center, Shenzhen, Guangdong, People's Republic of China
| | - Honghui Li
- The Affiliated Luohu Hospital of Shenzhen University Health Science Center, Shenzhen, Guangdong, People's Republic of China
| | - Tieqiang Wang
- Key Lab of Epidemiology, Department of Infectious Disease Control and Prevention, Shenzhen Guangming District Center for Disease Control and Prevention, Shenzhen, Guangdong, People's Republic of China
| | - Xiaoliang Chen
- Key Lab of Epidemiology, Department of Infectious Disease Control and Prevention, Shenzhen Guangming District Center for Disease Control and Prevention, Shenzhen, Guangdong, People's Republic of China
| | - Qionggui Zhou
- Department of Biostatistics and Epidemiology, School of Public Health, Shenzhen University Health Science Center, No. 1066 Xueyuan Avenue, Nanshan District, Shenzhen, 518060, Guangdong, People's Republic of China
| | - Chunmei Guo
- The Affiliated Luohu Hospital of Shenzhen University Health Science Center, Shenzhen, Guangdong, People's Republic of China
| | - Dongdong Zhang
- The Affiliated Luohu Hospital of Shenzhen University Health Science Center, Shenzhen, Guangdong, People's Republic of China
| | - Gang Tian
- The Affiliated Luohu Hospital of Shenzhen University Health Science Center, Shenzhen, Guangdong, People's Republic of China
| | - Dechen Liu
- The Affiliated Luohu Hospital of Shenzhen University Health Science Center, Shenzhen, Guangdong, People's Republic of China
| | - Ranran Qie
- The Affiliated Luohu Hospital of Shenzhen University Health Science Center, Shenzhen, Guangdong, People's Republic of China
| | - Minghui Han
- Department of Mental Health, Bao'an Chronic Diseases Prevent and Cure Hospital, Shenzhen, Guangdong, People's Republic of China
| | - Shengbing Huang
- Department of Mental Health, Bao'an Chronic Diseases Prevent and Cure Hospital, Shenzhen, Guangdong, People's Republic of China
| | - Xiaoyan Wu
- Department of Mental Health, Bao'an Chronic Diseases Prevent and Cure Hospital, Shenzhen, Guangdong, People's Republic of China
| | - Yang Li
- Department of Biostatistics and Epidemiology, School of Public Health, Shenzhen University Health Science Center, No. 1066 Xueyuan Avenue, Nanshan District, Shenzhen, 518060, Guangdong, People's Republic of China
| | - Yifei Feng
- The Affiliated Luohu Hospital of Shenzhen University Health Science Center, Shenzhen, Guangdong, People's Republic of China
| | - Xingjin Yang
- The Affiliated Luohu Hospital of Shenzhen University Health Science Center, Shenzhen, Guangdong, People's Republic of China
| | - Fulan Hu
- Department of Biostatistics and Epidemiology, School of Public Health, Shenzhen University Health Science Center, No. 1066 Xueyuan Avenue, Nanshan District, Shenzhen, 518060, Guangdong, People's Republic of China
- The Affiliated Luohu Hospital of Shenzhen University Health Science Center, Shenzhen, Guangdong, People's Republic of China
| | - Dongsheng Hu
- Department of Biostatistics and Epidemiology, School of Public Health, Shenzhen University Health Science Center, No. 1066 Xueyuan Avenue, Nanshan District, Shenzhen, 518060, Guangdong, People's Republic of China
- The Affiliated Luohu Hospital of Shenzhen University Health Science Center, Shenzhen, Guangdong, People's Republic of China
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Henan, People's Republic of China
| | - Ming Zhang
- Department of Biostatistics and Epidemiology, School of Public Health, Shenzhen University Health Science Center, No. 1066 Xueyuan Avenue, Nanshan District, Shenzhen, 518060, Guangdong, People's Republic of China.
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15
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Banu N, Panikar SS, Leal LR, Leal AR. Protective role of ACE2 and its downregulation in SARS-CoV-2 infection leading to Macrophage Activation Syndrome: Therapeutic implications. Life Sci 2020; 256:117905. [PMID: 32504757 PMCID: PMC7832382 DOI: 10.1016/j.lfs.2020.117905] [Citation(s) in RCA: 126] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 05/25/2020] [Accepted: 05/30/2020] [Indexed: 02/06/2023]
Abstract
In light of the outbreak of the 2019 novel coronavirus disease (COVID-19), the international scientific community has joined forces to develop effective treatment strategies. The Angiotensin-Converting Enzyme (ACE) 2, is an essential receptor for cell fusion and engulfs the SARS coronavirus infections. ACE2 plays an important physiological role, practically in all the organs and systems. Also, ACE2 exerts protective functions in various models of pathologies with acute and chronic inflammation. While ACE2 downregulation by SARS-CoV-2 spike protein leads to an overactivation of Angiotensin (Ang) II/AT1R axis and the deleterious effects of Ang II may explain the multiorgan dysfunction seen in patients. Specifically, the role of Ang II leading to the appearance of Macrophage Activation Syndrome (MAS) and the cytokine storm in COVID-19 is discussed below. In this review, we summarized the latest research progress in the strategies of treatments that mainly focus on reducing the Ang II-induced deleterious effects rather than attenuating the virus replication. Protective role of ACE2 in the organs and system Downregulation of ACE2 expression by SARS-CoV-2 leads to Ang II-induced organ damage. The appearance of MAS in COVID-19 patient Suggested treatment to diminish the deleterious effect of Ang II or appearance of MAS
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Affiliation(s)
- Nehla Banu
- Instituto de Enfermedades Crónico-Degenerativas, Departamento de Biología Molecular y Genómica, CUCS, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico
| | - Sandeep Surendra Panikar
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autonoma de México (UNAM), Apartado Postal 1-1010, Queretaro, Queretaro 76000, Mexico
| | - Lizbeth Riera Leal
- Hospital General Regional número 45, Instituto Mexicano del Seguro Social (IMSS), Guadalajara, Jalisco, Mexico
| | - Annie Riera Leal
- UC DAVIS Institute for Regenerative Cure, Department of Dermatology, University of California, 2921 Stockton Blvd, Rm 1630, 95817 Sacramento, CA, USA.
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16
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Abstract
Our own studies and those of others have shown that defects in essential fatty acid (EFA) metabolism occurs in age-related disorders such as obesity, type 2 diabetes mellitus, hypertension, atherosclerosis, coronary heart disease, immune dysfunction and cancer. It has been noted that in all these disorders there could occur a defect in the activities of desaturases, cyclo-oxygenase (COX), and lipoxygenase (LOX) enzymes leading to a decrease in the formation of their long-chain products gamma-linolenic acid (GLA), arachidonic acid, eicosapentaenoic acid (EPA), docosapentaenoic acid (DPA) and docosahexaenoic acid (DHA). This leads to an increase in the production of pro-inflammatory prostaglandin E2 (PGE2), thromboxanes (TXs), and leukotrienes (LTs) and a decrease in anti-inflammatory lipoxin A4, resolvins, protectins and maresins. All these bioactive molecules are termed as bioactive lipids (BALs). This imbalance in the metabolites of EFAs leads to low-grade systemic inflammation and at times acute inflammatory events at specific local sites that trigger the development of various age-related disorders such as obesity, type 2 diabetes mellitus, hypertension, coronary heart disease, atherosclerosis, and immune dysfunction as seen in rheumatoid arthritis, lupus, nephritis and other localized inflammatory conditions. This evidence implies that methods designed to restore BALs to normal can prevent age-related disorders and enhance longevity and health.
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17
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Collado A, Marques P, Escudero P, Rius C, Domingo E, Martinez-Hervás S, Real JT, Ascaso JF, Piqueras L, Sanz MJ. Functional role of endothelial CXCL16/CXCR6-platelet-leucocyte axis in angiotensin II-associated metabolic disorders. Cardiovasc Res 2019; 114:1764-1775. [PMID: 29800106 DOI: 10.1093/cvr/cvy135] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 05/18/2018] [Indexed: 12/16/2022] Open
Abstract
Aims Angiotensin-II (Ang-II) is the main effector peptide of the renin-angiotensin system (RAS) and promotes leucocyte adhesion to the stimulated endothelium. Because RAS activation and Ang-II signalling are implicated in metabolic syndrome (MS) and abdominal aortic aneurysm (AAA), we investigated the effect of Ang-II on CXCL16 arterial expression, the underlying mechanisms, and the functional role of the CXCL16/CXCR6 axis in these cardiometabolic disorders. Methods and results Results from in vitro chamber assays revealed that CXCL16 neutralization significantly inhibited mononuclear leucocyte adhesion to arterial but not to venous endothelial cells. Flow cytometry and immunofluorescence studies confirmed that Ang-II induced enhanced endothelial CXCL16 expression, which was dependent on Nox5 up-regulation and subsequent RhoA/p38-MAPK/NFκB activation. Flow cytometry analysis further showed that MS patients had higher levels of platelet activation and a higher percentage of circulating CXCR6-expressing platelets, CXCR6-expressing-platelet-bound neutrophils, monocytes, and CD8+ lymphocytes than age-matched controls, leading to enhanced CXCR6/CXCL16-dependent adhesion to the dysfunctional (Ang-II- and TNFα-stimulated) arterial endothelium. Ang-II-challenged apolipoprotein E-deficient (apoE-/-) mice had a higher incidence of AAA, macrophage, CD3+, and CXCR6+ cell infiltration and neovascularization than unchallenged animals, which was accompanied by greater CCL2, CXCL16, and VEGF mRNA expression within the lesion together with elevated levels of circulating soluble CXCL16. Significant reductions in these parameters were found in animals co-treated with the AT1 receptor antagonist losartan or in apoE-/- mice lacking functional CXCR6 receptor (CXCR6GFP/GFP). Conclusion CXCR6 expression on platelet-bound monocytes and CD8+ lymphocytes may constitute a new membrane-associated biomarker for adverse cardiovascular events. Moreover, pharmacological modulation of this axis may positively affect cardiovascular outcome in metabolic disorders linked to Ang-II.
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Affiliation(s)
- Aida Collado
- Department of Pharmacology, Faculty of Medicine, University of Valencia, Valencia, Spain.,Institute of Health Research INCLIVA, University of Valencia, Av. Menéndez Pelayo 4, Valencia, Spain
| | - Patrice Marques
- Department of Pharmacology, Faculty of Medicine, University of Valencia, Valencia, Spain.,Institute of Health Research INCLIVA, University of Valencia, Av. Menéndez Pelayo 4, Valencia, Spain
| | - Paula Escudero
- Department of Pharmacology, Faculty of Medicine, University of Valencia, Valencia, Spain.,Institute of Health Research INCLIVA, University of Valencia, Av. Menéndez Pelayo 4, Valencia, Spain
| | - Cristina Rius
- Department of Pharmacology, Faculty of Medicine, University of Valencia, Valencia, Spain.,Institute of Health Research INCLIVA, University of Valencia, Av. Menéndez Pelayo 4, Valencia, Spain
| | - Elena Domingo
- Department of Pharmacology, Faculty of Medicine, University of Valencia, Valencia, Spain
| | - Sergio Martinez-Hervás
- Institute of Health Research INCLIVA, University of Valencia, Av. Menéndez Pelayo 4, Valencia, Spain.,Department of Medicine, Faculty of Medicine, Endocrinology and Nutrition Unit, University Clinic Hospital of Valencia, University of Valencia, Valencia, Spain.,CIBERDEM-Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders, ISCIII, Spain
| | - José T Real
- Institute of Health Research INCLIVA, University of Valencia, Av. Menéndez Pelayo 4, Valencia, Spain.,Department of Medicine, Faculty of Medicine, Endocrinology and Nutrition Unit, University Clinic Hospital of Valencia, University of Valencia, Valencia, Spain.,CIBERDEM-Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders, ISCIII, Spain
| | - Juan F Ascaso
- Institute of Health Research INCLIVA, University of Valencia, Av. Menéndez Pelayo 4, Valencia, Spain.,Department of Medicine, Faculty of Medicine, Endocrinology and Nutrition Unit, University Clinic Hospital of Valencia, University of Valencia, Valencia, Spain.,CIBERDEM-Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders, ISCIII, Spain
| | - Laura Piqueras
- Department of Pharmacology, Faculty of Medicine, University of Valencia, Valencia, Spain.,Institute of Health Research INCLIVA, University of Valencia, Av. Menéndez Pelayo 4, Valencia, Spain
| | - Maria-Jesus Sanz
- Department of Pharmacology, Faculty of Medicine, University of Valencia, Valencia, Spain.,Institute of Health Research INCLIVA, University of Valencia, Av. Menéndez Pelayo 4, Valencia, Spain
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18
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Verma A, Xu K, Du T, Zhu P, Liang Z, Liao S, Zhang J, Raizada MK, Grant MB, Li Q. Expression of Human ACE2 in Lactobacillus and Beneficial Effects in Diabetic Retinopathy in Mice. MOLECULAR THERAPY-METHODS & CLINICAL DEVELOPMENT 2019; 14:161-170. [PMID: 31380462 PMCID: PMC6661465 DOI: 10.1016/j.omtm.2019.06.007] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 06/25/2019] [Indexed: 02/06/2023]
Abstract
The angiotensin converting enzyme 2 (ACE2) catalyzes the degradation of Angiotensin II (Ang II) to generate Angiotensin-(1-7), which reduces inflammation and oxidative stress stimulated by Ang II. ACE2 has been shown to be protective in cardiovascular and metabolic diseases including diabetes and its complications. However, the challenge for its clinical application is large-scale production of high-quality ACE2 with sufficient target tissue bioavailability. We developed an expression and delivery system based on the use of probiotic species Lactobacillus paracasei (LP) to serve as a live vector for oral delivery of human ACE2. We show that codon-optimized ACE2 can be efficiently expressed in LP. Mice treated with the recombinant LP expressing the secreted ACE2 in fusion with the non-toxic subunit B of cholera toxin, which acts as a carrier to facilitate transmucosal transport, showed increased ACE2 activities in serum and tissues. ACE2-LP administration reduced the number of acellular capillaries, blocked retinal ganglion cell loss, and decreased retinal inflammatory cytokine expression in two mouse models of diabetic retinopathy. These results provide proof of concept for feasibility of using engineered probiotic species as live vector for delivery of human ACE2 with enhanced tissue bioavailability for treating diabetic retinopathy, as well as other diabetic complications.
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Affiliation(s)
- Amrisha Verma
- Department of Ophthalmology, College of Medicine, University of Florida, Gainesville, FL 32610-0284, USA
| | - Kang Xu
- Department of Ophthalmology, College of Medicine, University of Florida, Gainesville, FL 32610-0284, USA
| | - Tao Du
- Department of Ophthalmology, College of Medicine, University of Florida, Gainesville, FL 32610-0284, USA
| | - Ping Zhu
- Department of Ophthalmology, College of Medicine, University of Florida, Gainesville, FL 32610-0284, USA
| | - Zhibing Liang
- Department of Ophthalmology, College of Medicine, University of Florida, Gainesville, FL 32610-0284, USA
| | - Shengquan Liao
- Department of Ophthalmology, College of Medicine, University of Florida, Gainesville, FL 32610-0284, USA
| | - Juantao Zhang
- Department of Ophthalmology, College of Medicine, University of Florida, Gainesville, FL 32610-0284, USA
| | - Mohan K Raizada
- Department of Physiology & Functional Genomics, College of Medicine, University of Florida, Gainesville, FL 32610, USA
| | - Maria B Grant
- Department of Ophthalmology & Visual Sciences, University of Alabama, Birmingham, AL 35294, USA
| | - Qiuhong Li
- Department of Ophthalmology, College of Medicine, University of Florida, Gainesville, FL 32610-0284, USA
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19
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Angelidi AM, Stambolliu E, Adamopoulou KI, Kousoulis AA. Is Atorvastatin Associated with New Onset Diabetes or Deterioration of Glycemic Control? Systematic Review Using Data from 1.9 Million Patients. Int J Endocrinol 2018; 2018:8380192. [PMID: 30425742 PMCID: PMC6217757 DOI: 10.1155/2018/8380192] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2018] [Accepted: 09/24/2018] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Current evidence indicates that statins increase the risk of new onset diabetes mellitus (NOD) and also deteriorate the glycemic control in patients with known diabetes mellitus (DM) after high-dose statin therapy. AIMS The aim of this review was to explore the effect of atorvastatin in causing NOD or deteriorating glycemic control in patients with DM. METHODS Two independent reviewers conducted the literature search, through PubMed database searching for articles published in English until April 2015, and only primary studies were included. RESULTS Of the 919 articles identified in our original search, 33 met the criteria for this review encompassing 1,951,113 participants. Twenty articles examined dysregulation of DM due to atorvastatin. Half of them showed that there was no significant change in glycemic control in patients treated with atorvastatin. Other studies showed that fasting plasma glucose and HbA1c levels were increased by atorvastatin. Thirteen articles examined if atorvastatin causes NOD. The majority of these articles showed that patients who used atorvastatin had a higher dose-dependent risk of developing NOD. CONCLUSION This systematic review suggests that there is an association between atorvastatin treatment and NOD. Moreover, it showed that atorvastatin in high dose causes worsening of the glycemic control in patients with DM.
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Affiliation(s)
| | - Emelina Stambolliu
- Society of Junior Doctors, Athens, Greece
- Hypertension Center STRIDE-7, Third University Department of Medicine, Sotiria Hospital, Athens, Greece
| | | | - Antonis A. Kousoulis
- Society of Junior Doctors, Athens, Greece
- Faculty of Epidemiology and Population Health, London School of Hygiene & Tropical Medicine, London WC1E 7HT, UK
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Ola-Davies OE, Azeez OI, Oyagbemi AA, Abatan MO. Acute coumaphos organophosphate exposure in the domestic dogs: Its implication on haematology and liver functions. Int J Vet Sci Med 2018; 6:103-112. [PMID: 30255086 PMCID: PMC6149256 DOI: 10.1016/j.ijvsm.2018.04.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 04/05/2018] [Accepted: 04/05/2018] [Indexed: 11/24/2022] Open
Abstract
Indiscriminate use of organophosphate acaricides especially among livestock and dog owners in the control of ticks and other ectoparasites has taken a worrisome dimension. In the present study, we investigated, the effects of acute dermal exposure in the form of acaricides baths of coumaphos at different concentrations on the haematology, blood pressure and liver functions in local mongrel dogs. Twenty-four, male mongrel dogs of about 8 months of age with an average weight of 9.88 ± 0.4 kg were used for the study. The dogs were divided into four groups consisting of six dogs per group. Group A (control) was bathed with ordinary water, while group B was bathed with the recommended concentration of 0.016% (160 ppm) Coumaphos in water. Groups C and D were bathed with 10 and 20 times the recommended dose (1600 ppm and 3200 ppm), respectively. Significant leucopenia, increased plasma urea and decreased low density lipoprotein (LDL) values were observed at 8 h post exposure, which worsened with time. At 24 and 36 hrs post exposure, normochromic normocytic anaemia, pan leucopenia, bloody diarrhoea, retching, vomiting and paddling were observed in affected animals. Post mortem examination revealed severe lungs, liver and stomach congestion. Multifocal areas of necrosis in the liver and kidney, serosal and mucosal haemorrhages and haemorrhagic meningitis were also observed. The use of excessively high concentration of organophosphate as acaricides bath is associated with severe anticholinesterase poisoning, which may result in death of affected animals.
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Affiliation(s)
- O E Ola-Davies
- Department of Veterinary Physiology and Biochemistry, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - O I Azeez
- Department of Veterinary Physiology and Biochemistry, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - A A Oyagbemi
- Department of Veterinary Physiology and Biochemistry, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - M O Abatan
- Department of Veterinary Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
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Wang JB, Gu Y, Zhang MX, Yang S, Wang Y, Wang W, Li XR, Zhao YT, Wang HT. High expression of type I inositol 1,4,5-trisphosphate receptor in the kidney of rats with hepatorenal syndrome. World J Gastroenterol 2018; 24:3273-3280. [PMID: 30090007 PMCID: PMC6079285 DOI: 10.3748/wjg.v24.i29.3273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 06/19/2018] [Accepted: 06/27/2018] [Indexed: 02/06/2023] Open
Abstract
AIM To detect the expression of type I inositol 1,4,5-trisphosphate receptor (IP3RI) in the kidney of rats with hepatorenal syndrome (HRS). METHODS One hundred and twenty-five Sprague-Dawley rats were randomly divided into four groups to receive an intravenous injection of D-galactosamine (D-GalN) plus lipopolysaccharide (LPS; group G/L, n = 50), D-GalN alone (group G, n = 25), LPS alone (group L, n = 25), and normal saline (group NS, n = 25), respectively. At 3, 6, 9, 12, and 24 h after injection, blood, liver, and kidney samples were collected. Hematoxylin-eosin staining of liver tissue was performed to assess hepatocyte necrosis. Electron microscopy was used to observe ultrastructural changes in the kidney. Western blot analysis and real-time PCR were performed to detect the expression of IP3RI protein and mRNA in the kidney, respectively. RESULTS Hepatocyte necrosis was aggravated gradually, which was most significant at 12 h after treatment with D-galactosamine/lipopolysaccharide, and was characterized by massive hepatocyte necrosis. At the same time, serum levels of biochemical indicators including liver and kidney function indexes were all significantly changed. The structure of the renal glomerulus and tubules was normal at all time points. Western blot analysis indicated that IP3RI protein expression began to rise at 3 h (P < 0.05) and peaked at 12 h (P < 0.01). Real-time PCR demonstrated that IP3RI mRNA expression began to rise at 3 h (P < 0.05) and peaked at 9 h (P < 0.01). CONCLUSION IP3RI protein expression is increased in the kidney of HRS rats, and may be regulated at the transcriptional level.
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MESH Headings
- Animals
- Disease Models, Animal
- Galactosamine/toxicity
- Hepatocytes/pathology
- Hepatorenal Syndrome/chemically induced
- Hepatorenal Syndrome/pathology
- Humans
- Inositol 1,4,5-Trisphosphate Receptors/genetics
- Inositol 1,4,5-Trisphosphate Receptors/metabolism
- Kidney/blood supply
- Kidney/cytology
- Kidney/pathology
- Kidney/ultrastructure
- Lipopolysaccharides/toxicity
- Liver/cytology
- Liver/drug effects
- Liver/pathology
- Male
- Microscopy, Electron
- Muscle, Smooth, Vascular/cytology
- Muscle, Smooth, Vascular/pathology
- Myocytes, Smooth Muscle/pathology
- Myocytes, Smooth Muscle/ultrastructure
- Necrosis
- RNA, Messenger/metabolism
- Rats
- Rats, Sprague-Dawley
- Specific Pathogen-Free Organisms
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Affiliation(s)
- Jing-Bo Wang
- Liver Cirrhosis Ward, the Sixth People’s Hospital of Shenyang, Shenyang 110006, Liaoning Province, China
| | - Ye Gu
- Liver Cirrhosis Ward, the Sixth People’s Hospital of Shenyang, Shenyang 110006, Liaoning Province, China
| | - Ming-Xiang Zhang
- Liver Cirrhosis Ward, the Sixth People’s Hospital of Shenyang, Shenyang 110006, Liaoning Province, China
| | - Shun Yang
- Liaoning Cancer Hospital & Institute, Shenyang 110042, Liaoning Province, China
| | - Yan Wang
- Liver Cirrhosis Ward, the Sixth People’s Hospital of Shenyang, Shenyang 110006, Liaoning Province, China
| | - Wei Wang
- Liver Cirrhosis Ward, the Sixth People’s Hospital of Shenyang, Shenyang 110006, Liaoning Province, China
| | - Xi-Ran Li
- Liver Cirrhosis Ward, the Sixth People’s Hospital of Shenyang, Shenyang 110006, Liaoning Province, China
| | - Yi-Tong Zhao
- Liver Cirrhosis Ward, the Sixth People’s Hospital of Shenyang, Shenyang 110006, Liaoning Province, China
| | - Hai-Tao Wang
- Department of General Surgery, the Second Affiliated Hospital of Shenyang Medical College, Shenyang 110002, Liaoning Province, China
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22
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Kim DB, Paik CN, Song DS, Kim YJ, Lee JM. The characteristics of small intestinal bacterial overgrowth in patients with gallstone diseases. J Gastroenterol Hepatol 2018; 33:1477-1484. [PMID: 29392773 DOI: 10.1111/jgh.14113] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 01/16/2018] [Accepted: 01/22/2018] [Indexed: 12/18/2022]
Abstract
BACKGROUND AND AIM Small intestinal bacterial overgrowth (SIBO) might be prevalent in gallstone disease, including cases involving cholecystectomy and gallstones. The study aimed to investigate the prevalence and characteristics of SIBO in patients with gallstone disease. METHODS This prospective study evaluated 265 patients for gallstone disease (200, gallstones; 65, cholecystectomy) and 39 healthy controls. Laboratory data, abdominal ultrasonography, and glucose breath test (GBT) with bowel symptom questionnaire were performed. RESULTS Glucose breath test positivity (+) in patients with gallstone disease (36.6%) was significantly higher than that in controls (20.5%). GBT+ in the gallstone group (40.5%) was significantly higher than that in the control or cholecystectomy group (24.6%). The number of patients with gallstone, tend to be higher in the GBT (H2 )+, (CH4 )+, and (mixed)+ groups (56 [28.0%], 11 [5.5%], and 14 [7.00%]), respectively. Gallbladder disease was independently associated with fatty liver, metabolic syndrome, and SIBO. Of 97 GBT+ patients, 70 (72.1%), 12 (12.4%), and 15 (15.5%) were in the GBT (H2 )+, (CH4 )+, and (mixed)+ groups, respectively. GBT (CH4 )+ or GBT (mixed)+ were significantly associated with the gallstone group compared with the cholecystectomy group. The GBT (mixed)+ group had higher total symptom scores than the GBT- group for hard stool and urgency tendency, or the GBT (H2 )+ group in hard stool and loose stool tendency. Gallstone was the only independent factor for SIBO in patients with gallstone diseases. CONCLUSIONS Small intestinal bacterial overgrowth is common among patients with gallstone. Especially, CH4 or mixed-type SIBO seems to be prevalent and to worsen intestinal symptoms.
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Affiliation(s)
- Dae Bum Kim
- Department of Internal Medicine, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Chang-Nyol Paik
- Department of Internal Medicine, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Do Seon Song
- Department of Internal Medicine, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Yeon Ji Kim
- Department of Internal Medicine, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Ji Min Lee
- Department of Internal Medicine, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
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Naumann J, Biehler D, Lüty T, Sadaghiani C. Prevention and Therapy of Type 2 Diabetes-What Is the Potential of Daily Water Intake and Its Mineral Nutrients? Nutrients 2017; 9:nu9080914. [PMID: 28829398 PMCID: PMC5579707 DOI: 10.3390/nu9080914] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 08/10/2017] [Accepted: 08/18/2017] [Indexed: 11/17/2022] Open
Abstract
We aim to present an overview of the possible influence of drinking water in general and mineral water in particular in improving glycemic parameters in persons with or without type 2 diabetes. We performed a literature search that produced 15 randomized controlled trials (RCTs) on this topic with mainly small sample sizes. We also discuss relevant observational and animal studies as well as the effects of important supplements in mineral water such as hydrogencarbonate and magnesium. There is low evidence for the positive effects of water or mineral water in improving glycemic parameters in diabetic and non-diabetic persons, and the results are heterogenous, making it difficult to reach an unequivocal conclusion. Meta-analyses of prospective cohort studies and other observational studies, studies with animal models and interventional studies using hydrogencarbonate and magnesium supplements suggest a probable positive effect of drinking water and mineral water in particular on glycemic parameters, supporting the positive results found in some of the RCTs, especially those substituting diet beverages or caloric beverages with water, or those using bicarbonate and magnesium-rich water. Regarding the high prevalence, the associated suffering and the resulting health expenditures of type 2 diabetes, it is imperative to conduct larger and more rigorous trials to answer the question whether drinking water or mineral water can improve glycemic parameters in diabetic and non-diabetic persons.
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Affiliation(s)
- Johannes Naumann
- Interdisciplinary Center for Treatment and Research in Balneology, Institute for Infection Prevention and Hospital Epidemiology, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany.
| | - Diana Biehler
- Interdisciplinary Center for Treatment and Research in Balneology, Institute for Infection Prevention and Hospital Epidemiology, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany.
| | - Tania Lüty
- Interdisciplinary Center for Treatment and Research in Balneology, Institute for Infection Prevention and Hospital Epidemiology, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany.
| | - Catharina Sadaghiani
- Interdisciplinary Center for Treatment and Research in Balneology, Institute for Infection Prevention and Hospital Epidemiology, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany.
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Abstract
Abdominal aortic aneurysm (AAA) is a chronic inflammatory condition, triggered by the local accumulation of macrophages, oxidative stress and damage to the aortic wall. Pro-inflammatory eicosanoids seem to play a significant role in AAA. The pro-inflammatory events seen in AAA could be due to a deficiency of anti-inflammatory eicosanoids such as lipoxin A4 (LXA4), resolvins, protectins and maresins as a result of reduced tissue concentrations of their precursors: arachidonic acid (AA), eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA). Thus, an imbalance between pro- and anti-inflammatory eicosanoids may underlie AAA. Angiotensin-II (Ang-II), a pro-inflammatory molecule, seems to have a role in AAA. I propose that AAA is due to the local (abdominal aortic wall) deficiency of AA and other PUFAs and their anti-inflammatory metabolites especially LXA4. The beneficial action of EPA and DHA reported in the animal experimental models of AAA induced by Ang-II infusion can be attributed to their (EPA and DHA) ability to enhance the formation of not only resolvins, protectins and maresins but also LXA4. It is likely that abdominal aortic tissue (endothelial cells, smooth muscle cells and other cells) may be deficient in AA, EPA and DHA, and have defective activity of 5-, 12-, and 15-lipoxygenases and cyclooxygenase, especially COX-2 resulting in decreased formation of LXA4, resolvins, protectins and maresins. Thus, methods designed to enhance the formation of LXA4 and other anti-inflammatory eicosanoids may form a new approach to prevent and manage AAA.
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Affiliation(s)
- Undurti N Das
- UND Life Sciences, 2221, NW 5th St, Battle Ground, WA 98604, USA
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