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https://www.readbyqxmd.com/read/28884091/alterations-of-the-gut-microbiome-in-hypertension
#1
Qiulong Yan, Yifang Gu, Xiangchun Li, Wei Yang, Liqiu Jia, Changming Chen, Xiuyan Han, Yukun Huang, Lizhe Zhao, Peng Li, Zhiwei Fang, Junpeng Zhou, Xiuru Guan, Yanchun Ding, Shaopeng Wang, Muhammad Khan, Yi Xin, Shenghui Li, Yufang Ma
Introduction: Human gut microbiota is believed to be directly or indirectly involved in cardiovascular diseases and hypertension. However, the identification and functional status of the hypertension-related gut microbe(s) have not yet been surveyed in a comprehensive manner. Methods: Here we characterized the gut microbiome in hypertension status by comparing fecal samples of 60 patients with primary hypertension and 60 gender-, age-, and body weight-matched healthy controls based on whole-metagenome shotgun sequencing...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28876684/differences-in-microbiome-in-rat-models-of-cardiovascular-disease
#2
A Thiba, C A Umar, S Myende, E Nweke, K Rumbold, G Candy
BACKGROUND: Recent studies have underscored the important role the gut metagenome in various human diseases, including diabetes and obesity. Hypertension is a major risk factor for cardiovascular disease, stroke, and heart and kidney failure, and affects approximately 25% of the world's adult population. The cause of essential hypertension remains unknown. Patients given antibiotics show blood pressure changes and transfer of gut bacteria from hypertensive to normal WKY rats resulted in the latter developing hypertension...
June 2017: South African Journal of Surgery. Suid-Afrikaanse Tydskrif Vir Chirurgie
https://www.readbyqxmd.com/read/28857085/enteric-dysbiosis-linked-gut-barrier-disruption-triggers-early-renal-injury-induced-by-chronic-high-salt-feeding-in-mice
#3
Jingjuan Hu, Haihua Luo, Jieyan Wang, Wenli Tang, Junqi Lu, Shan Wu, Zhi Xiong, Guizhi Yang, Zhenguo Chen, Tian Lan, Hongwei Zhou, Jing Nie, Yong Jiang, Peng Chen
Chronic high-salt diet-associated renal injury is a key risk factor for the development of hypertension. However, the mechanism by which salt triggers kidney damage is poorly understood. Our study investigated how high salt (HS) intake triggers early renal injury by considering the 'gut-kidney axis'. We fed mice 2% NaCl in drinking water continuously for 8 weeks to induce early renal injury. We found that the 'quantitative' and 'qualitative' levels of the intestinal microflora were significantly altered after chronic HS feeding, which indicated the occurrence of enteric dysbiosis...
August 25, 2017: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/28836619/beyond-gut-feelings-how-the-gut-microbiota-regulates-blood-pressure
#4
REVIEW
Francine Z Marques, Charles R Mackay, David M Kaye
Hypertension is the leading risk factor for heart disease and stroke, and is estimated to cause 9.4 million deaths globally every year. The pathogenesis of hypertension is complex, but lifestyle factors such as diet are important contributors to the disease. High dietary intake of fruit and vegetables is associated with reduced blood pressure and lower cardiovascular mortality. A critical relationship between dietary intake and the composition of the gut microbiota has been described in the literature, and a growing body of evidence supports the role of the gut microbiota in the regulation of blood pressure...
August 24, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28796176/bridging-the-gap-between-gut-microbial-dysbiosis-and-cardiovascular-diseases
#5
REVIEW
Kimberley Lau, Varun Srivatsav, Ayesha Rizwan, Andrew Nashed, Rui Liu, Rui Shen, Mahmood Akhtar
The human gut is heavily colonized by a community of microbiota, primarily bacteria, that exists in a symbiotic relationship with the host and plays a critical role in maintaining host homeostasis. The consumption of a high-fat (HF) diet has been shown to induce gut dysbiosis and reduce intestinal integrity. Recent studies have revealed that dysbiosis contributes to the progression of cardiovascular diseases (CVDs) by promoting two major CVD risk factors-atherosclerosis and hypertension. Imbalances in host-microbial interaction impair homeostatic mechanisms that regulate health and can activate multiple pathways leading to CVD risk factor progression...
August 10, 2017: Nutrients
https://www.readbyqxmd.com/read/28713826/characterization-of-oral-microbiota-in-removable-dental-prosthesis-users-influence-of-arterial-hypertension
#6
Leila Maria Marchi-Alves, Dayana Freitas, Denise de Andrade, Simone de Godoy, Adrielle Naiara Toneti, Isabel Amélia Costa Mendes
INTRODUCTION: Studies have described the possible relation between oral infections and atherosclerotic events. OBJECTIVE: To characterize the oral microbiota of normotensive and hypertensive users of dental prostheses. METHODS: The sample consisted of 41 complete dental prosthesis users, divided into groups: 21 participants with systemic arterial hypertension and 20 normotensive participants. The data collection included the characteristics of the sociodemographic variables and the determination of the microbial load in the saliva...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28674682/the-microbiome-and-blood-pressure-%C3%A2-can-microbes-regulate-our-blood-pressure
#7
REVIEW
Souhaila Al Khodor, Bernd Reichert, Ibrahim F Shatat
The surfaces of the human body are heavily populated by a highly diverse microbial ecosystem termed the microbiota. The largest and richest among these highly heterogeneous populations of microbes is the gut microbiota. The collection of microbes and their genes, called the microbiome, has been studied intensely through the past few years using novel metagenomics, metatranscriptomics, and metabolomics approaches. This has enhanced our understanding of how the microbiome affects our metabolic, immunologic, neurologic, and endocrine homeostasis...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28624548/glucocorticoids-and-gut-bacteria-the-galf-hypothesis-in-the-metagenomic-era
#8
REVIEW
David J Morris, Jason M Ridlon
A new concept is emerging in biomedical sciences: the gut microbiota is a virtual 'organ' with endocrine function. Here, we explore the literature pertaining to the role of gut microbial metabolism of endogenous adrenocorticosteroids as a contributing factor in the etiology of essential hypertension. A body of literature demonstrates that bacterial products of glucocorticoid metabolism are absorbed into the portal circulation, and pass through the kidney before excretion into urine. Apparent mineralocorticoid excess (AME) syndrome patients were found to have congenital mutations resulting in non-functional renal 11β-hydroxysteroid dehydrogenase-2 (11β-HSD2) and severe hypertension often lethal in childhood...
June 15, 2017: Steroids
https://www.readbyqxmd.com/read/28550391/gut-liver-axis-cirrhosis-and-portal-hypertension-the-chicken-and-the-egg
#9
Juan P Arab, Rosa M Martin-Mateos, Vijay H Shah
The term gut-liver axis is used to highlight the close anatomical and functional relationship between the intestine and the liver. The intestine has a highly specialized epithelial membrane which regulates transport across the mucosa. Due to dysbiosis, impairment of the intestinal barrier and altered immunity status, bacterial products can reach the liver through the portal vein, where they are recognized by specific receptors, activate the immune system and lead to a proinflammatory response. Gut microbiota and bacterial translocation play an important role in the pathogenesis of chronic liver diseases, including alcoholic and non-alcoholic fatty liver disease, cirrhosis, and its complications, such as portal hypertension, spontaneous bacterial peritonitis and hepatic encephalopaty...
May 26, 2017: Hepatology International
https://www.readbyqxmd.com/read/28546357/gut-microbiota-potential-for-a-unifying-hypothesis-for-prevention-and-treatment-of-hypertension
#10
YanFei Qi, Seungbum Kim, Elaine M Richards, Mohan K Raizada, Carl J Pepine
No abstract text is available yet for this article.
May 26, 2017: Circulation Research
https://www.readbyqxmd.com/read/28542544/development-and-characterization-of-an-experimental-model-of-diet-induced-metabolic-syndrome-in-rabbit
#11
Oscar Julián Arias-Mutis, Vannina G Marrachelli, Amparo Ruiz-Saurí, Antonio Alberola, Jose Manuel Morales, Luis Such-Miquel, Daniel Monleon, Francisco J Chorro, Luis Such, Manuel Zarzoso
Metabolic syndrome (MetS) has become one of the main concerns for public health because of its link to cardiovascular disease. Murine models have been used to study the effect of MetS on the cardiovascular system, but they have limitations for studying cardiac electrophysiology. In contrast, the rabbit cardiac electrophysiology is similar to human, but a detailed characterization of the different components of MetS in this animal is still needed. Our objective was to develop and characterize a diet-induced experimental model of MetS that allows the study of cardiovascular remodeling and arrhythmogenesis...
2017: PloS One
https://www.readbyqxmd.com/read/28509726/sodium-butyrate-suppresses-angiotensin-ii-induced-hypertension-by-inhibition-of-renal-pro-renin-receptor-and-intrarenal-renin-angiotensin-system
#12
Lei Wang, Qing Zhu, Aihua Lu, Xiaofen Liu, Linlin Zhang, Chuanming Xu, Xiyang Liu, Haobo Li, Tianxin Yang
OBJECTIVES: Butyrate, a short-chain fatty acid, is the end product of the fermentation of complex carbohydrates by the gut microbiota. Recently, sodium butyrate (NaBu) has been found to play a protective role in a number of chronic diseases. However, it is still unclear whether NaBu has a therapeutic potential in hypertension. The present study was aimed to investigate the role of NaBu in angiotensin II (Ang II)-induced hypertension and to further explore the underlying mechanism. METHODS: Ang II was infused into uninephrectomized Sprague-Dawley rats with or without intramedullary infusion of NaBu for 14 days...
September 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28444579/the-gut-its-microbiome-and-hypertension
#13
REVIEW
Elaine M Richards, Carl J Pepine, Mohan K Raizada, Seungbum Kim
PURPOSE OF THE REVIEW: Evidence is rapidly accumulating implicating gut dysbiosis in hypertension (HTN). However, we are far from understanding whether this is a cause or consequence of HTN, and how to best translate this fundamental knowledge to advance the management of HTN. This review aims to summarize recent advances in the field, illustrate the connections between the gut and hypertension, and establish that the gut microbiota (GM)-gut interaction is centrally positioned for consideration as an innovative approach for HTN therapeutics...
April 2017: Current Hypertension Reports
https://www.readbyqxmd.com/read/28404738/microbiotal-host-interactions-and-hypertension
#14
REVIEW
Sarah Galla, Saroj Chakraborty, Blair Mell, Matam Vijay-Kumar, Bina Joe
Hypertension, or elevated blood pressure (BP), has been extensively researched over decades and clearly demonstrated to be caused due to a combination of host genetic and environmental factors. Although much research remains to be conducted to pin-point the precise genetic elements on the host genome that control BP, new lines of evidence are emerging to indicate that, besides the host genome, the genomes of all indigenous commensal micro-organisms, collectively referred to as the microbial metagenome or microbiome, are important, but largely understudied, determinants of BP...
May 2017: Physiology
https://www.readbyqxmd.com/read/28365886/obstructive-sleep-apnea-induced-hypertension-role-of-the-gut-microbiota
#15
REVIEW
David J Durgan
PURPOSE OF REVIEW: Obstructive sleep apnea (OSA) is a significant risk factor for systemic hypertension and other cardiovascular diseases. While this relationship has been firmly established, a detailed understanding of how OSA leads to hypertension is lacking. This review will examine the emerging idea that the gut microbiota plays a role in the development of hypertension, including that associated with OSA. RECENT FINDINGS: Disruption of the normal composition of the gut microbiota, termed dysbiosis, has been identified in a number of metabolic and cardiovascular diseases, including diabetes, obesity, and atherosclerosis...
April 2017: Current Hypertension Reports
https://www.readbyqxmd.com/read/28360349/gut-microbiota-in-cardiovascular-health-and-disease
#16
REVIEW
W H Wilson Tang, Takeshi Kitai, Stanley L Hazen
Significant interest in recent years has focused on gut microbiota-host interaction because accumulating evidence has revealed that intestinal microbiota play an important role in human health and disease, including cardiovascular diseases. Changes in the composition of gut microbiota associated with disease, referred to as dysbiosis, have been linked to pathologies such as atherosclerosis, hypertension, heart failure, chronic kidney disease, obesity, and type 2 diabetes mellitus. In addition to alterations in gut microbiota composition, the metabolic potential of gut microbiota has been identified as a contributing factor in the development of diseases...
March 31, 2017: Circulation Research
https://www.readbyqxmd.com/read/28353075/oral-microbiome-and-nitric-oxide-the-missing-link-in-the-management-of-blood-pressure
#17
REVIEW
Nathan S Bryan, Gena Tribble, Nikola Angelov
Having high blood pressure puts you at risk for heart disease and stroke, which are leading causes of death in the USA and worldwide. One out of every three Americans has hypertension, and it is estimated that despite aggressive treatment with medications, only about half of those medicated have managed blood pressure. Recent discoveries of the oral microbiome that reduces inorganic nitrate to nitrite and nitric oxide provide a new therapeutic target for the management of hypertension. The presence or absence of select and specific bacteria may determine steady-state blood pressure levels...
April 2017: Current Hypertension Reports
https://www.readbyqxmd.com/read/28352942/long-term-dietary-nitrite-and-nitrate-deficiency-causes-the-metabolic-syndrome-endothelial-dysfunction-and-cardiovascular-death-in-mice
#18
Mika Kina-Tanada, Mayuko Sakanashi, Akihide Tanimoto, Tadashi Kaname, Toshihiro Matsuzaki, Katsuhiko Noguchi, Taro Uchida, Junko Nakasone, Chisayo Kozuka, Masayoshi Ishida, Haruaki Kubota, Yuji Taira, Yuichi Totsuka, Shin-Ichiro Kina, Hajime Sunakawa, Junichi Omura, Kimio Satoh, Hiroaki Shimokawa, Nobuyuki Yanagihara, Shiro Maeda, Yusuke Ohya, Masayuki Matsushita, Hiroaki Masuzaki, Akira Arasaki, Masato Tsutsui
AIMS/HYPOTHESIS: Nitric oxide (NO) is synthesised not only from L-arginine by NO synthases (NOSs), but also from its inert metabolites, nitrite and nitrate. Green leafy vegetables are abundant in nitrate, but whether or not a deficiency in dietary nitrite/nitrate spontaneously causes disease remains to be clarified. In this study, we tested our hypothesis that long-term dietary nitrite/nitrate deficiency would induce the metabolic syndrome in mice. METHODS: To this end, we prepared a low-nitrite/nitrate diet (LND) consisting of an amino acid-based low-nitrite/nitrate chow, in which the contents of L-arginine, fat, carbohydrates, protein and energy were identical with a regular chow, and potable ultrapure water...
June 2017: Diabetologia
https://www.readbyqxmd.com/read/28349378/gastrointestinal-tract-a-promising-target-for-the-management-of-hypertension
#19
REVIEW
Shiqiang Xiong, Qiang Li, Daoyan Liu, Zhiming Zhu
The pathogenesis of hypertension remains elusive. Current treatments on hypertension have only achieved modest reductions. Facilitating theoretical research and looking for new therapeutic strategy are urgently needed. Besides food digestion and nutrients absorption, the gastrointestinal tract (GI) has been shown to influence the status of the central nervous system, immune system, metabolism, and cardiovascular homeostasis. Emerging findings demonstrate that endogenous factors derived from GI including gut hormones, autonomic nerve, and gut microbiota play important roles in the regulation of vascular function and/or blood pressure...
April 2017: Current Hypertension Reports
https://www.readbyqxmd.com/read/28338639/beyond-the-cholesterol-lowering-effect-of-soy-protein-a-review-of-the-effects-of-dietary-soy-and-its-constituents-on-risk-factors-for-cardiovascular-disease
#20
REVIEW
D Dan Ramdath, Emily M T Padhi, Sidra Sarfaraz, Simone Renwick, Alison M Duncan
The hypocholesterolemic effect of soy is well-documented and this has led to the regulatory approval of a health claim relating soy protein to a reduced risk of cardiovascular disease (CVD). However, soybeans contain additional components, such as isoflavones, lecithins, saponins and fiber that may improve cardiovascular health through independent mechanisms. This review summarizes the evidence on the cardiovascular benefits of non-protein soy components in relation to known CVD risk factors such as hypertension, hyperglycemia, inflammation, and obesity beyond cholesterol lowering...
March 24, 2017: Nutrients
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