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Nutrition: Potassium
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Total 378 results found since Jan 2013.
Urinary Sodium and Potassium, and Risk of Ischaemic and Haemorrhagic Stroke (INTERSTROKE): a case-control study.
CONCLUSION: The association of sodium intake and stroke is J-shaped, with high sodium intake a stronger risk factor for intracerebral haemorrhage than ischemic stroke. Our data suggest that moderate sodium intake - rather than low sodium intake - combined with high potassium intake may be associated with the lowest risk of stroke and expected to be a more feasible combined dietary target.
PMID: 33197265 [PubMed - as supplied by publisher]
Source: American Journal of Hypertension - November 17, 2020 Category: Cardiology Authors: Judge C, O'Donnell MJ, Hankey GJ, Rangarajan S, Chin SL, Rao-Melacini P, Ferguson J, Smyth A, Xavier D, Lisheng L, Zhang H, Lopez-Jaramillo P, Damasceno A, Langhorne P, Rosengren A, Dans AL, Elsayed A, Avezum A, Mondo C, Ryglewicz D, Czlonkowska A, Pogoso Tags: Am J Hypertens Source Type: research
Kidney Ischemia/Reperfusion Injury Induces Changes in the Drug Transporter Expression at the Blood –Brain Barrier in vivo and in vitro
Ischemia/reperfusion injury is a major cause of acute kidney injury (AKI). AKI is characterized by a sudden decrease in kidney function, systemic inflammation, oxidative stress, and dysregulation of the sodium, potassium, and water channels. While AKI leads to uremic encephalopathy, epidemiological studies have shown that AKI is associated with a subsequent risk for developing stroke and dementia. To get more insights into kidney–brain crosstalk, we have created an in vitro co-culture model based on human kidney cells of the proximal tubule (HK-2) and brain microvascular endothelial cells (BMEC). The HK-2 cell line was g...
Source: Frontiers in Physiology - November 12, 2020 Category: Physiology Source Type: research
Neocortical in vivo focal and spreading potassium responses and the influence of astrocytic gap junctional coupling.
Abstract
Raised extracellular potassium ion (K+) concentration is associated with several disorders including migraine, stroke, neurotrauma and epilepsy. K+ spatial buffering is a well-known mechanism for extracellular K+ regulation/distribution. Astrocytic gap junction-mediated buffering is a controversial candidate for K+ spatial buffering. To further investigate the existence of a K+ spatial buffering and to assess the involvement of astrocytic gap junctional coupling in K+ redistribution, we hypothesized that neocortical K+ and concomitant spreading depolarization (SD)-like responses are controlled by powerful...
Source: Neurobiology of Disease - November 2, 2020 Category: Neurology Authors: EbrahimAmini A, Bazzigaluppi P, Aquilino MS, Stefanovic B, Carlen PL Tags: Neurobiol Dis Source Type: research
Long Non-Coding KCNQ1OT1 Promotes Oxygen-Glucose-Deprivation/Reoxygenation-Induced Neurons Injury Through Regulating MIR-153-3p/FOXO3 Axis
In this study, we aimed to investigate the role of LncRNA-Potassium Voltage-Gated Channel Subfamily Q Member 1 opposite strand/antisense transcript 1 (KCNQ1OT1) in cerebral I/R induced neuronal injury, and its underlying mechanisms. Methods: Primary mouse cerebral cortical neurons treated with oxygen-glucose deprivation and reoxygenation (OGD/R) in vitro and mice subjected to middle cerebral artery occlusion (MCAO) and reperfusion were used to mimic cerebral I/R injury.
Source: Journal of Stroke and Cerebrovascular Diseases - August 11, 2020 Category: Neurology Authors: Hua-Jun Wang, Xia-Lin Tang, Gan Huang, Ying-Bin Li, Rui-Huan Pan, Jie Zhan, Ye-Kun Wu, Jian-Feng Liang, Xiao-xin Bai, Jun Cai Source Type: research
Sodium Fluctuations in Astroglia and Their Potential Impact on Astrocyte Function
Astrocytes are the main cell type responsible for the regulation of brain homeostasis, including the maintenance of ion gradients and neurotransmitter clearance. These processes are tightly coupled to changes in the intracellular sodium (Na+) concentration. While activation of the sodium-potassium-ATPase (NKA) in response to an elevation of extracellular K+ may decrease intracellular Na+, the cotransport of transmitters, such as glutamate, together with Na+ results in an increase in astrocytic Na+. This increase in intracellular Na+ can modulate, for instance, metabolic downstream pathways. Thereby, astrocytes are capable ...
Source: Frontiers in Physiology - August 11, 2020 Category: Physiology Source Type: research
Low serum potassium levels are associated with the risk of atrial fibrillation.
CONCLUSION: We found that low serum potassium levels of less than 3.5 mmol/l are associted with increased risk of AF.
PMID: 32723154 [PubMed - as supplied by publisher]
Source: Acta Cardiologica - July 30, 2020 Category: Cardiology Tags: Acta Cardiol Source Type: research
Premature Stroke Secondary to Severe Hypertension Results from Liddle Syndrome Caused by a Novel SCNN1B Mutation
Conclusions:We identified a novelSCNN1B mutation (c.1849C#x3e;A) in a family affected by LS. Patients with LS, especially those with severe hypertension, should be alert for the occurrence of premature stroke. Timely diagnosis using genetic testing and tailored treatment with amiloride can help LS patients to avoid severe complications.Kidney Blood Press Res
Source: Kidney and Blood Pressure Research - July 22, 2020 Category: Urology & Nephrology Source Type: research
Electrophysiological effects of non-vitamin K antagonist oral anticoagulants on atrial repolarizing potassium channels
Conclusion Apixaban, dabigatran, edoxaban, and rivaroxaban did not exhibit direct functional interactions with human atrial K+ channels underlyingIKr,IKur,Ito,IK1, andIK2P currents that could account for beneficial clinical outcome associated with the drugs. Indirect or chronic effects and potential underlying signalling mechanisms remain to be investigated.
Source: Europace - July 17, 2020 Category: Cardiology Source Type: research
Potassium binders for chronic hyperkalaemia in people with chronic kidney disease.
CONCLUSIONS: Evidence supporting clinical decision-making for different potassium binders to treat chronic hyperkalaemia in adults with CKD is of low certainty; no studies were identified in children. Available studies have not been designed to measure treatment effects on clinical outcomes such as cardiac arrhythmias or major GI symptoms. This review suggests the need for a large, adequately powered study of potassium binders versus placebo that assesses clinical outcomes of relevance to patients, clinicians and policy-makers. This data could be used to assess cost-effectiveness, given the lack of definitive studies and t...
Source: Cochrane Database of Systematic Reviews - June 25, 2020 Category: General Medicine Authors: Natale P, Palmer SC, Ruospo M, Saglimbene VM, Strippoli GF Tags: Cochrane Database Syst Rev Source Type: research
Critical review of nutrition, blood pressure and risk of hypertension through the lifecycle: do B vitamins play a role?
Abstract
Hypertension is the leading cause of preventable mortality worldwide, contributing to over 9 million deaths per annum, predominantly owing to cardiovascular disease. The association of obesity, physical inactivity and alcohol with elevated blood pressure (BP) is firmly established. Weight loss or other dietary strategies, such as the Dietary Approaches to Stop Hypertension (DASH) diet, have been shown to be effective in lowering BP. Additionally, specific nutrients are recognised to contribute to BP, with higher sodium intake linked with an increased risk of hypertension, while potassium is associated wit...
Source: Biochimie - April 10, 2020 Category: Biochemistry Authors: Psara E, Pentieva K, Ward M, McNulty H Tags: Biochimie Source Type: research
Interleukin-18 from neurons and microglia mediates depressive behaviors in mice with post-stroke depression.
In this study, we demonstrate that in IL-18 level in the ischemic brain significantly increased in mice with depression-like behaviors that caused by the combined use of chronic spatial restraint stress and middle cerebral artery occlusion. Interestingly, IL-18 expression was mainly found in neurons at early phase and in microglia in late phase. Injection of exogenous IL-18 in to the amygdala, but not the hippocampus or the striatum, caused severe depression-like behaviors. On the contrary, the blockage of endogenous IL-18 by IL-18 binding protein, a specific antagonist of IL-18, rescued depressive phenotypes in SIR mice. ...
Source: Brain, Behavior, and Immunity - April 5, 2020 Category: Neurology Authors: Wu D, Zhang G, Zhao C, Yang Y, Miao Z, Xu X Tags: Brain Behav Immun Source Type: research
Synthesis, Molecular Modeling of Novel Substituted Pyridazinones and Their Vasorelaxant activities.
Abstract
BACKGROUND: Hypertension, one of the most common cardiovascular diseases that can cause coronary disease, stroke, myocardial infarction and sudden death, it is the major contributor to cardiac failure as well as renal insufficiency.
OBJECTIVES: As there are many cardio-active pyridazinone-base derivatives in clinical use, therefore, it we aimed to synthesize a new series of pyridazin-3-ones and evaluate their vasorelaxant activity.
METHODS: The new series of synthesized compounds were carried out first by synthesis of 6-flouroarylpyridazinones by cyclization of 3-(4-flourobenzoyl) propionic acid...
Source: Medicinal Chemistry - March 26, 2020 Category: Chemistry Authors: Ismail M, Soliman D, Elmoniem MHA, Jaleel GARA Tags: Med Chem Source Type: research
Relationship Between Electrical Instability and Pumping Performance During Ventricular Tachyarrhythmia: Computational Study
There are representative electrical parameters for understanding the mechanism of reentrant waves in studies on tachyarrhythmia, namely the action potential duration (APD), dominant frequency, phase singularity, and filament. However, there are no studies that have directly identified the correlation between these electrophysiological parameters and cardiac contractility. Therefore, we have identified individual and integrative correlations between these electrical phenomena and contractility during tachyarrhythmia by deriving regression equations and also investigated the electrophysiological parameters affecting cardiac ...
Source: Frontiers in Physiology - March 23, 2020 Category: Physiology Source Type: research
Admission glucose level was associated with increased short-term mortality and length-of-stay irrespective of diagnosis, treating medical specialty or concomitant laboratory values.
CONCLUSIONS: Short-term mortality increased substantially with admission hypo- and hyperglycemia for patients both with and without diabetes, irrespective of treating medical specialty, main discharge diagnosis, or concurrent laboratory values. Patients with diabetes (16%) were older, with higher glucose levels at admission, and with a different pattern of the association of admission glucose and mortality.
PMID: 31982283 [PubMed - as supplied by publisher]
Source: European Journal of Internal Medicine - January 21, 2020 Category: Internal Medicine Authors: Björk M, Melin EO, Frisk T, Thunander M Tags: Eur J Intern Med Source Type: research
Chemogenetics-mediated acute inhibition of excitatory neuronal activity improves stroke outcome.
CONCLUSIONS: Our data demonstrate that acute inhibition of a subset of excitatory neurons after ischemic stroke can prevent brain injury and improve functional outcome. This study, together with the previous work in optogenetic neuronal modulation during the chronic phase of stroke, supports the notion that targeting neuronal activity is a promising strategy in stroke therapy.
PMID: 31962128 [PubMed - as supplied by publisher]
Source: Experimental Neurology - January 17, 2020 Category: Neurology Authors: Wang YC, Galeffi F, Wang W, Li X, Lu L, Sheng H, Hoffmann U, Turner DA, Yang W Tags: Exp Neurol Source Type: research
