scholarly journals Bacterial-Induced Blood Pressure Reduction: Mechanisms for the Treatment of Hypertension via the Gut

2021 ◽  
Vol 8 ◽  
Author(s):  
Tyler Alexander Cookson
Keyword(s):  
Blood Pressure ◽  
Gut Microbiome ◽  
Blood Pressure Reduction ◽  
The Body ◽  
Bioactive Molecules ◽  
Future Research ◽  
Negative Effects ◽  
Gut Dysbiosis ◽  
Reduction Mechanisms ◽  
Treatment Of Hypertension

Hypertension is a major risk factor for the development of cardiovascular disease. As more research into the gut microbiome emerges, we are finding increasing evidence to support that these microbes may have significant positive and negative effects on blood pressure and associated disorders. The bacterial-derived metabolites that are produced in the gut are capable of widespread effects to several tissue types and organs in the body. It is clear that the extensive metabolic function that is lost with gut dysbiosis is unlikely to be replenished with a single metabolite or bacterial strain. Instead, combinations of bacteria and concomitant therapies will provide a more well-rounded solution to manage hypertension. The bioactive molecules that are recognized in this review will inform on ideal characteristics of candidate bacteria and provide direction for future research on the gut microbiome in hypertension.

scholarly journals PO-259 Effect of 30%，50% and 70% VO2 max treadmill exercises on gut microbiome in hypertensive mice

2018 ◽  
Vol 1 (5) ◽  
Author(s):  
Jin Li ◽  
Wenting Shi ◽  
Pengyi Zhang
Keyword(s):  
Blood Pressure ◽  
Aerobic Exercise ◽  
Gut Microbiome ◽  
Pathogenic Bacteria ◽  
Exercise Group ◽  
The Body ◽  
National Standard ◽  
Control Group ◽  
Beneficial Bacteria ◽  
Vo2 Max

Objective Gut microbiome has a significant impact on human health through the interaction with host and environment, which is closely related to a series of chronic diseases. The diversity of gut microbiome and its metabolic disorder are the risk factor of hypertension. The changes of gut microbiome structure and abundance are closely related to the pathogenesis of hypertension, in which Bifidobacterium and lactic acid bacteria can bind with the hypotensive substances to show the hypotensive therapy. However, the diet and exercise have great impact on the structure and function of gut microbiome, and of which aerobic exercise could increase the ratio of gut beneficial bacteria to harmful bacteria effectively. The effect of treadmill exercise on gut microbiome of hypertensive mice was studied in this paper, which provided a theoretical basis for the prevention and treatment of hypertension by gut microbiome. Methods SPF Kunming mice were fed with 8% high salt diet for 6 weeks to make the hypertension model. Compared with the blood pressure of mice before the formal experiment, The standard was that the blood pressure of the experimental mice was increased by SBP >15% or DBP > 5%, which was indicated the model of hypertension was established successfully. The motion slope and velocity of the maximum oxygen uptake of 30%, 50%, and 70% were measured respectively. The mice were divided into 4 groups randomly according to their body weight, 10 mice/group. The 30% VO2 max, 50% VO2 max, and 70% VO2 max were exercised for 6 weeks as well as the control group. The mice were divided into cages and fed in accordance with the national standard rodent diet. The blood pressure of mice was measured weekly by tail pressure method (Tail-cuff).The abundance of Bifidobacterium, Bacteroides, Lactobacillus and Enterobacter in the gut microbiome of mice feces were tested by 16S sequencing every two weeks. The ratio of Firmicute / Bacteroides (F/B ratio) was also measured by sequencing as a parameter to reflect the disorder of gut microbiome. The ratio of Firmicutes / Bacteroides is almost equal 1, and the present study found that the F/B increased significantly in the hypertensive group. Real-time PCR was used to detect the changes of plasma inflammatory factors IL-1β, IL-6 and TNF-ɑ. The previous study had shown that the intestinal disorders can lead to an increase in pathogenic bacteria, further leading to the inflammation. Finally, the experimental data were analyzed by independent sample t-test. Results (1) After six weeks of exercise intervention, the blood pressure (132.87mm Hg±5.23mm Hg) of the exercise group was significantly lower than the control group (99.57mm Hg±7.47mm Hg), especially in the 50%VO2 max mice. (2) Compared with the rest group, the abundance of gut microbiome in the exercise group was increased, among which the number of Bifidobacteria, Lactobacillus, and Bacteroides were increased significantly, of which 50% of VO2 max group increased most significantly, and the number of Enterobacter was less than the control group (p<0.05). (3) Compared with the control group, the ratio of F/B in the exercise groups were lower than the control group, but the 50% VO2 max group was decreased most obviously (p < 0.05). (4) Compared with the control group, the plasma levels of IL-1β, IL-6 and TNF-ɑ in exercise groups were significantly lower than the control group (p < 0.05). Conclusions  (1) The aerobic exercise could change the abundance and structure of gut microbiome in hypertensive mice, increase the beneficial bacteria Bifidobacteria and lactobacillus in the intestinal tract of mice, and reduce the ratio of Firmicutes/Bacteroides, improving the gut microbiome disorder. (2) The aerobic exercise could alleviate the inflammatory reaction of the body by regulating the structure of gut microbiome of hypertensive mice, improving the blood pressure of mice; (3) 50%VO2 max was the most significant exercise intensity to improve the abundance and structure of gut microbiome in hypertensive mice.  

scholarly journals Association between Exercise and Blood Pressure in Hypertensive Residents: A Meta-Analysis

2022 ◽  
Vol 2022 ◽  
pp. 1-13
Author(s):  
Zhu Zhu ◽  
Wu Yan ◽  
Qiurun Yu ◽  
Peihao Wu ◽  
Francis Manyori Bigambo ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Tai Chi ◽  
Weighted Mean Difference ◽  
Meta Analysis ◽  
Blood Pressure Reduction ◽  
Reduce Blood Pressure ◽  
Cochrane Library ◽  
Lifestyle Behaviour ◽  
Exercise Interventions ◽  
Treatment Of Hypertension

Background. Exercise is recommended as an effective lifestyle behaviour for adults to prevent and treat hypertension. In this study, a randomized-effect meta-analysis was used to analyse the influence of exercise interventions on blood pressure in patients with hypertension. Methods. Candidate papers were retrieved from PubMed, Web of Science, Embase, and Cochrane Library electronic databases, and 46 studies were finally included and analysed. Results. It was shown that preplanned walking (systolic blood pressure (SBP): WMD (weighted mean difference) = −5.94, 95% CI: −8.57, −3.30; diastolic blood pressure (DBP): WMD = −2.66, 95% CI: −3.66, −1.67), yoga (SBP: WMD = −5.09, 95% CI: −9.28, −0.89; DBP: WMD = −3.06, 95% CI: −5.16, −0.96), aquatic sports (SBP WMD = −7.53, 95% CI: −11.40, −3.65; DBP: WMD = −5.35, 95% CI: −9.00, −1.69), and football (SBP: WMD = −6.06, 95% CI: −9.30, −2.82; DBP: WMD = −5.55, 95% CI: −8.98, −2.13) had significant effects on blood pressure reduction. However, Tai Chi (SBP: WMD = −8.31, 95% CI: −20.39, 3.77; DBP: WMD = −3.05, 95% CI: −6.96, 0.87) and Qigong (SBP: WMD = −4.34, 95% CI: −13.5, 4.82; DBP: WMD = −3.44, 95% CI: −7.89, 1.01) did not significantly reduce blood pressure. The heterogeneity of the meta-analysis was high. Conclusion. Walking, yoga, aquatic sports, and football were feasible and independent lifestyle interventions, and they were effective options for treating hypertension. More scientifically designed randomized controlled trials are needed in the future to further compare different forms of exercise for the treatment of hypertension.

scholarly journals Human Skin, Oral, and Gut Microbiomes Predict Chronological Age

mSystems ◽  
2020 ◽  
Vol 5 (1) ◽  
Author(s):  
Shi Huang ◽  
Niina Haiminen ◽  
Anna-Paola Carrieri ◽  
Rebecca Hu ◽  
Lingjing Jiang ◽  
...  
Keyword(s):  
Gut Microbiome ◽  
Prediction Models ◽  
The Body ◽  
Oral Microbiome ◽  
Chronological Age ◽  
Future Research ◽  
Skin Microbiome ◽  
Age Related ◽  
Relative Value

ABSTRACT Human gut microbiomes are known to change with age, yet the relative value of human microbiomes across the body as predictors of age, and prediction robustness across populations is unknown. In this study, we tested the ability of the oral, gut, and skin (hand and forehead) microbiomes to predict age in adults using random forest regression on data combined from multiple publicly available studies, evaluating the models in each cohort individually. Intriguingly, the skin microbiome provides the best prediction of age (mean ± standard deviation, 3.8 ± 0.45 years, versus 4.5 ± 0.14 years for the oral microbiome and 11.5 ± 0.12 years for the gut microbiome). This also agrees with forensic studies showing that the skin microbiome predicts postmortem interval better than microbiomes from other body sites. Age prediction models constructed from the hand microbiome generalized to the forehead and vice versa, across cohorts, and results from the gut microbiome generalized across multiple cohorts (United States, United Kingdom, and China). Interestingly, taxa enriched in young individuals (18 to 30 years) tend to be more abundant and more prevalent than taxa enriched in elderly individuals (>60 yrs), suggesting a model in which physiological aging occurs concomitantly with the loss of key taxa over a lifetime, enabling potential microbiome-targeted therapeutic strategies to prevent aging. IMPORTANCE Considerable evidence suggests that the gut microbiome changes with age or even accelerates aging in adults. Whether the age-related changes in the gut microbiome are more or less prominent than those for other body sites and whether predictions can be made about a person’s age from a microbiome sample remain unknown. We therefore combined several large studies from different countries to determine which body site’s microbiome could most accurately predict age. We found that the skin was the best, on average yielding predictions within 4 years of chronological age. This study sets the stage for future research on the role of the microbiome in accelerating or decelerating the aging process and in the susceptibility for age-related diseases.

scholarly journals Alterations of Gut Microbiome in Untreated Chronic Lymphocytic Leukemia (CLL); Future Therapeutic Potentials

Blood ◽  
2019 ◽  
Vol 134 (Supplement_1) ◽  
pp. 5455-5455
Author(s):  
Mohammed Kawari ◽  
Mahmood Akhtar ◽  
Mohamed Sager ◽  
Zakaria Basbous ◽  
Ibrahim Baydoun ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Chronic Inflammation ◽  
Systemic Inflammation ◽  
Gut Microbiome ◽  
Healthy Subjects ◽  
The Body ◽  
Healthy Controls ◽  
Bacterial Phyla ◽  
Gut Dysbiosis

Introduction: Gut dysbiosis is an imbalance of the gut microbiome. The presence of dysbiosis can be a cause of systemic inflammation in the body or can be a contributing factor to it. Chronic systemic inflammation is a common feature of CLL, creating an environment in which CLL cells have a survival advantage. NF-κB and STAT3, master transcriptional regulators of pro-inflammatory markers, like IL-1 and IL-6, are reported to be involved in this process as are the Toll-like receptors (TLRs), key innate immunity receptors that are implicated in CLL pathophysiology. With increasing evidence for the role of dysbiosis in chronic inflammation, as well as the role of systemic inflammation in CLL, it seems relevant to prove the presence and the possible role of microbiome in the pathophysiology of CLL, to unravel the complex interaction between microbiome, nutrition and the host in patients with CLL. Our research investigate the hypothesis that dysbiosis i.e. the loss of "health-promoting" commensal gut microbes and/or the overgrowth of pathogenic bacteria distinguishes untreated patients with CLL versus aged-matched unaffected individuals. Methodology: Eight untreated CLL patients were with no history of gastrointestinal disorders, other malignancies and have not been on antibiotics for 4 weeks prior to samples collection. Two of them were not followed for logistical reasons. Six healthy volunteers matched for sex and age were also enrolled in the study. Stool samples from six patients and additional six matched healthy controls were collected and stored in a -40 freezer immediately until they were used for DNA isolation. Total genomic DNA was extracted using the Qiamp DNA stool mini kit and sequenced using Next Generation Sequencing and then analysis were done as per the manufacturer recommendations. Results: Our data indicates a reduced diversity and variability in bacterial phyla of gut microbiota in CLL patients as compare to healthy controls. Lower diversity with increase in certain bacterial types is a well-accepted sign of gut dysbiosis, which have been shown in many disorders such as; type-2 diabetes, obesity, and various autoimmune and neurological diseases. An increase in Proteobacteria numbers has been recognized as the signature of gut dysbiosis which we confirmed in our cohort of patients. Proteobacteria, Firmicutes and Bacteriodetes were also the most abundant bacterial phyla in CLL patients of our study which were reported previously in breast cancer patients. An elevated Firmicutes to Bacteroidetes ratio with altered gut microbiota in CLL patients compared with healthy subjects was also suggested in clinical studies involving obese individuals with insulin resistance. We have observed in CLL patients of this study relative increase in the numbers of Firmicutes and reduction in Bacteriodetes which is considered to be an inverted ratio as compared to healthy individuals which were also reported in ulcerative colitis, colonic and ileal crohn's disease as compared to healthy subjects. . Our finding of gut dysbiosis in this study is linked the association between CLL, inflammatory processes and dysbiosis. The microbiota may play a role in promoting malignancy through chronic inflammation, by disturbing the balance of cell proliferation, death and by initiating unwanted innate and adaptive immune responses. Conclusion: Restoring gut microbiota might open a new avenue for future researches as potential therapeutic intervention in CLL patients. Figure Disclosures No relevant conflicts of interest to declare.

The Gut Microbiome in Hypertension

2021 ◽  
Vol 128 (7) ◽  
pp. 934-950
Author(s):  
Ellen G. Avery ◽  
Hendrik Bartolomaeus ◽  
Andras Maifeld ◽  
Lajos Marko ◽  
Helge Wiig ◽  
...  
Keyword(s):  
Immune Cells ◽  
Gut Microbiome ◽  
Short Chain Fatty Acids ◽  
The Body ◽  
Model Systems ◽  
Future Research ◽  
Hypertensive Disease ◽  
Preclinical Research ◽  
Ongoing Research ◽  
Diverse Range

The pathogenesis of hypertension is known to involve a diverse range of contributing factors including genetic, environmental, hormonal, hemodynamic and inflammatory forces, to name a few. There is mounting evidence to suggest that the gut microbiome plays an important role in the development and pathogenesis of hypertension. The gastrointestinal tract, which houses the largest compartment of immune cells in the body, represents the intersection of the environment and the host. Accordingly, lifestyle factors shape and are modulated by the microbiome, modifying the risk for hypertensive disease. One well-studied example is the consumption of dietary fibers, which leads to the production of short-chain fatty acids and can contribute to the expansion of anti-inflammatory immune cells, consequently protecting against the progression of hypertension. Dietary interventions such as fasting have also been shown to impact hypertension via the microbiome. Studying the microbiome in hypertensive disease presents a variety of unique challenges to the use of traditional model systems. Integrating microbiome considerations into preclinical research is crucial, and novel strategies to account for reciprocal host-microbiome interactions, such as the wildling mouse model, may provide new opportunities for translation. The intricacies of the role of the microbiome in hypertensive disease is a matter of ongoing research, and there are several technical considerations which should be accounted for moving forward. In this review we provide insights into the host-microbiome interaction and summarize the evidence of its importance in the regulation of blood pressure. Additionally, we provide recommendations for ongoing and future research, such that important insights from the microbiome field at large can be readily integrated in the context of hypertension.

Treatment of Hypertension in Middle-Aged Men: A Feasibility Study in a Community

1976 ◽  
Vol 51 (s3) ◽  
pp. 597s-599s
Author(s):  
H. Åberg ◽  
H. Hedstrand
Keyword(s):  
Blood Pressure ◽  
Diastolic Blood Pressure ◽  
Feasibility Study ◽  
Blood Pressure Control ◽  
Blood Pressure Reduction ◽  
Pressure Control ◽  
Health Examination ◽  
Pressure Reduction ◽  
Hypertension Clinic ◽  
Treatment Of Hypertension

1. In a health examination survey of 2322 men, aged 49–50 years, the prevalence of hypertension was 7·5%. All men with a supine diastolic blood pressure ≥ 105 mmHg were invited to a hypertension clinic. 2. Two years' treatment in eighty-six men achieved a blood pressure reduction of 31/16 mmHg, which was maintained for a 4 years period and considered satisfactory in 80% of the subjects. Propranolol was used in more than 80% of the cases. 3. The study indicates that it is possible to obtain acceptable blood pressure control in the community.

A Closer Look at the Causes and Consequences of Frequent Stock Trading

2017 ◽  
Author(s):  
Michal Strahilevitz
Keyword(s):  
The Body ◽  
Future Research ◽  
Gambling Addiction ◽  
Negative Effects ◽  
Emotional Instability ◽  
Stock Trading ◽  
Irrational Behavior ◽  
Underlying Causes ◽  
Investor Returns ◽  
Harmful Behavior

This chapter examines the phenomenon of frequent stock trading. Specifically, it covers the ample research demonstrating the negative effects of frequent trading on investor returns, as well as several possible underlying causes for this irrational behavior. Possible causes of frequent trading discussed include overconfidence, risk seeking, gambling addiction, frequency of negative emotions, and emotional instability. The chapter also examines gender differences. Although the body of research showing that frequent trading is bad for returns is vast, many investors continue to trade too often for their own good. Therefore, besides discussing potential causes of frequent stock trading, this chapter also stresses the need for future research to identify effective methods of helping investors reduce this financially harmful behavior.

scholarly journals Efficacy and Safety of Barnidipine Compared with Felodipine in the Treatment of Hypertension in Chinese Patients

2002 ◽  
Vol 30 (3) ◽  
pp. 330-336 ◽  
Author(s):  
CS Liau ◽  
KL Chien ◽  
CL Chao ◽  
TM Lee
Keyword(s):  
Blood Pressure ◽  
Essential Hypertension ◽  
Blood Pressure Reduction ◽  
Similar Efficacy ◽  
Moderate Essential Hypertension ◽  
Chinese Patients ◽  
Efficacy And Safety ◽  
Once Daily ◽  
Significant Difference ◽  
Treatment Of Hypertension

The efficacy and safety profiles of barnidipine in the treatment of hypertension were evaluated in an open parallel-group study. Fifty-nine Chinese patients with mild-to-moderate essential hypertension were randomized to receive either barnidipine or felodipine (5 mg once daily, titrated to 10 mg or 15 mg once daily, as indicated) for 12 weeks. Both drugs reduced blood pressures significantly with ≥ 68% of cases obtaining marked or moderate blood pressure reduction. Mean reductions in systolic and diastolic blood pressure for barnidipine treatment were 23.7 ± 13.5 mmHg and 12.7 ± 7.9 mmHg, and for felodipine, 24.3 ± 18.4 mmHg and 14.5 ± 10.0 mmHg, respectively. There was no significant difference between these two drugs in anti-hypertensive effect, heart rate, laboratory measurements or incidence of adverse events. The only difference was that more patients taking felodipine experienced palpitations. We conclude that barnidipine has similar efficacy and a similar safety profile to felodipine in the treatment of mild-to-moderate essential hypertension in Chinese patients.

Aliskiren for the Treatment of Hypertension: An Update

2009 ◽  
Vol 1 ◽  
pp. CMT.S1991
Author(s):  
S Lam ◽  
S Saxena ◽  
LO Macina ◽  
PE Lester
Keyword(s):  
Blood Pressure ◽  
Blood Pressure Control ◽  
Disease Risk ◽  
Angiotensin Receptor Blockers ◽  
Blood Pressure Reduction ◽  
Antihypertensive Agents ◽  
Pressure Control ◽  
Pressure Reduction ◽  
Efficacy And Safety ◽  
Treatment Of Hypertension

Hypertension can lead to significant morbidity and mortality, and requires lifestyle modifications with or without drug therapy to achieve target blood pressure control. Various classes of anti-hypertensive medications are available to healthcare providers. Choice of medications is based not only on efficacy but also tolerability and cost. Aliskiren is the first drug of a new class of agents known as renin inhibitors. It is approved by the U.S. Food and Drug Administration (FDA) as monotherapy or combination therapy with other antihypertensive agents to optimize blood pressure control. Its efficacy in blood pressure reduction is superior to placebo and comparable to angiotensin receptor blockers, hydrochlorothiazide, angiotensin-converting-enzyme inhibitors and atenolol. It also offers additional blood pressure reduction when used in combination of other agents. Recently, a study demonstrated its efficacy and safety in the elderly, and a study suggested its renoprotective effects in patient who were already taking losartan. More clinical studies are awaited to assess its potential for cardiovascular disease risk reduction. This paper reviews the pharmacology, efficacy and safety of aliskiren for the treatment of hypertension.

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