Read by QxMD icon Read

Low potassium

Renato Willian Martins Sá, Andrea Siqueira Haibara, Paula Magalhães Gomes, Giovana Lopes Aguiar, Rafael Souza Leopoldino Nascimento, Maria Lucia Pedrosa, Andréia Carvalho Alzamora, Lisandra Brandino de Oliveira, Leonardo Máximo Cardoso
What is the central question of this study? In this study we sought to investigate whether cardiovascular responses to peripheral chemoreflex activation of rats recovered from protein restriction are related to AT1 receptors activation. What is the main finding and its importance? This study highlights the fact that angiotensinergic mechanisms activated by AT1 receptors do not supported increased responses to peripheral chemoreflex activation by KCN in rats recovered from protein restriction. Also, we found that protein restriction led to increased resting ventilation in adult rats, even after recovery...
October 20, 2016: Experimental Physiology
Ichiro Chihara, Satoshi Nitta, Tomokazu Kimura, Shuya Kandori, Takashi Kawahara, Natsui Waku, Takahiro Kojima, Akira Joraku, Jun Miyazaki, Hitoshi Iwasaki, Hiroaki Suzuki, Koji Kawai, Hiroyuki Nishiyama
We reported two cases of hyperthyroidism that developed during induction chemotherapy for advanced germ cell tumors with high serum human chorionic gonadotropin (hCG) levels. Case 1 : An 18-year-old man with mediastinal choriocarcinoma complained of tachycardia and tremor. His pretreatment serum hCG level was 1.37 million mIU/ml. The free thyroxine (fT4) level measured on day 2 of the first course of bleomycin, etoposide and cisplatin (BEP) was elevated to 7.8 ng/dl (<1.7 ng/dl), whereasthe thyroidstimulating hormone (TSH) level was undetectable...
September 2016: Hinyokika Kiyo. Acta Urologica Japonica
Béla Voß, Reinhard Seifert, U Benjamin Kaupp, Helmut Grubmüller
Ligand-protein binding processes are essential in biological systems. A well-studied system is the binding of cyclic adenosine monophosphate to the cyclic nucleotide binding domain of the bacterial potassium channel MloK1. Strikingly, the measured on-rate for cyclic adenosine monophosphate binding is two orders of magnitude slower than a simple Smoluchowski diffusion model would suggest. To resolve this discrepancy and to characterize the ligand-binding path in structural and energetic terms, we calculated 1100 ligand-binding molecular dynamics trajectories and tested two scenarios: In the first scenario, the ligand transiently binds to the protein surface and then diffuses along the surface into the binding site...
October 18, 2016: Biophysical Journal
Do Hee Kim, Hee Jin Kwon, Sang A Ji, Hye Ryoun Jang, Sin-Ho Jung, Jung-Han Kim, Jae Hyeon Kim, Jung Eun Lee, Wooseong Huh, Yoon-Goo Kim, Dae Joong Kim, Ha Young Oh
Primary aldosteronism (PA) may induce significant decline of renal function and structural damage of kidney. However, it is difficult to evaluate accurate renal function in patients with PA, because glomerular hyperfiltration and aldosterone escape can conceal renal impairment. In this retrospective cohort study, we compared changes in renal function after unilateral adrenalectomy between patients with PA and patients with other adrenal diseases. Risk factors associated with postoperative renal impairment in patients with PA were analyzed...
July 2016: Medicine (Baltimore)
Xu Zhao, Jing Yu
OBJECTIVE: To assess the efficacy and safety of a novel hormone therapy, drospirenone combined with 17-β-estradiol (DRSP/E2) in postmenopausal hypertensive women. DESIGN AND METHOD: A systemic literature search of PubMed, Embase, Cochrane Library, Web of Science (up to Oct. 2015) was performed. Studies were screened independently by two researchers according to the inclusion and exclusion criteria which included only the randomized controlled trials (RCT) about the drospirenone with 17-β-estradiol for postmenopausal women with hypertension...
September 2016: Journal of Hypertension
Norm Campbell
Hypertension is the second leading global risk for death and disability after unhealthy diets. Amongst dietary risks, excess dietary salt (sodium) is the leading risk. As dietary sodium increases, blood pressure increases linearly. In meta-analyses of higher quality cohort studies and in a meta-analysis of randomized controlled trials, higher dietary sodium is linearly associated with increased cardiovascular disease. There are an estimated xxxx deaths and xxx DALYs in 2013 from excess dietary sodium. The World Health Organization has a recommended sodium (salt) intake of less than 2000 mg (5 g)/day with the World Health Assembly setting a voluntary target of a 30% reduction by 2025...
September 2016: Journal of Hypertension
Bernadene A Magnuson, Michael C Carakostas, Nadia H Moore, Sylvia P Poulos, Andrew G Renwick
With continued efforts to find solutions to rising rates of obesity and diabetes, there is increased interest in the potential health benefits of the use of low- and no-calorie sweeteners (LNCSs). Concerns about safety often deter the use of LNCSs as a tool in helping control caloric intake, even though the safety of LNCS use has been affirmed by regulatory agencies worldwide. In many cases, an understanding of the biological fate of the different LNSCs can help health professionals to address safety concerns...
November 2016: Nutrition Reviews
Patrick Amoateng, Samuel Adjei, Dorcas Osei-Safo, Believe Ahedor, Seidu A Mahmood, Benoit B N'guessan, Isaac J Asiedu-Gyekye, Alexander K Nyarko
BACKGROUND: Conflicting reports about the toxicity of Synedrella nodiflora (L) Gaertn (family Asteraceae), a plant traditionally used in Ghana for the management of epilepsy, abound in literature. The present study evaluates the effect of a 90-day continuous oral administration of a hydro-ethanolic whole plant extract of Synedrella nodiflora (SNE) in male Sprague-Dawley rats. METHODS: The toxicological evaluation of the extract (100, 300 and 1000 mgkg(-1)) was focused on haematological, serum biochemical parameters and histopathological changes of some isolated organs...
September 2016: Ghana Medical Journal
Luara A Batista, Andrea S Haibara, Luiz C Schenberg, Fabricio A Moreira
Selective stimulation of carotid chemoreceptors by intravenous infusion of low doses of potassium cyanide (KCN) produces short-lasting escape responses that have been proposed as a model of panic attack. In turn, preclinical studies suggest that facilitation of the endocannabinoid system attenuate panic-like responses. Here, we compared the effects of cannabinoid-related compounds to those of alprazolam, a clinically effective panicolytic, on the duration of the escape reaction induced by intravenous infusion of KCN (80μg) in rats...
October 10, 2016: Behavioural Brain Research
Biranchi Narayan Mohapatra, Sujit Kumar Lenka, Manoranjan Acharya, Chakradhar Majhi, Gouri Oram, Khetra Mohan Tudu
OBJECTIVE: To study the clinical profile of hypokalemic flaccid paralysis (HKFP) and to evaluate its causes. METHODS: Fifty cases of hypokalemic flaccid paralysis (HKFP) admitted between November 2012 to October 2014 were taken up in the study. Serum potassium level < 3.5 mmol/ltr has been taken as hypokalemia. All cases were studied for spot and/or 24 hour urinary sodium / potassium, serum potassium / calcium / magnesium. Hypokalemic periodic paralysis (HPP) were diagnosed if there was spot/24 hour urine potassium excretion < 20mmol/ltr in presence of hypokalemia and flaccid weakness without other causes...
May 2016: Journal of the Association of Physicians of India
Nicola Forte, Lucian Medrihan, Beatrice Cappetti, Pietro Baldelli, Fabio Benfenati
OBJECTIVE: The inhibition of glycolysis exerts potent antiseizure effects, as demonstrated by the efficacy of ketogenic and low-glucose/nonketogenic diets in the treatment of drug-resistant epilepsy. ATP-sensitive potassium (KATP ) channels have been initially identified as the main determinant of the reduction of neuronal hyperexcitability. However, a plethora of other mechanisms have been proposed. Herein, we report the ability of 2-deoxy-d-glucose (2-DG), a glucose analog that inhibits glycolytic enzymes, of potentiating γ-aminobutyric acid (GABA)ergic tonic inhibition via neurosteroid-mediated activation of extrasynaptic GABAA receptors...
October 13, 2016: Epilepsia
N Guess
BACKGROUND: Diets reduced or low in carbohydrates are becoming increasingly popular. The replacement foods and their accompanying nutrients determine the health effects of such diets. However, little is known about the dietary intake of people consuming reduced or low carbohydrate diets. METHODS: In this cross-sectional study, the dietary and nutrient intake of individuals aged 16-75 years consuming less than 40% of energy from carbohydrate (n = 430) was compared with individuals consuming equal to or more than 40% energy from carbohydrate (n = 1833) using the UK National Diet and Nutrition Survey...
October 12, 2016: Journal of Human Nutrition and Dietetics: the Official Journal of the British Dietetic Association
Yibo Wang, Jiqing Guo, Laura L Perissinotti, James Lees-Miller, Guoqi Teng, Serdar Durdagi, Henry J Duff, Sergei Yu Noskov
Mutations that reduce inactivation of the voltage-gated Kv11.1 potassium channel (hERG) reduce binding for a number of blockers. State specific block of the inactivated state of hERG block may increase risks of drug-induced Torsade de pointes. In this study, molecular simulations of dofetilide binding to the previously developed and experimentally validated models of the hERG channel in open and open-inactivated states were combined with voltage-clamp experiments to unravel the mechanism(s) of state-dependent blockade...
October 12, 2016: Scientific Reports
J N Seheult, D J Triulzi, L H Alarcon, J L Sperry, A Murdock, M H Yazer
BACKGROUND/OBJECTIVES: The safety of administering uncrossmatched, group O, cold-stored, whole blood (cWB) during civilian trauma resuscitation was evaluated. METHODS/MATERIALS: Male trauma patients with haemorrhage-induced hypotension who received leuko-reduced uncrossmatched group O+, low titer (<50) anti-A and -B, platelet-replete cWB during initial resuscitation were included. The biochemical markers of haemolysis (lactate dehydrogenase, total bilirubin, haptoglobin, creatinine, serum potassium) were measured on the day of cWB receipt (day 0), and over the next 2 days, reports of transfusion reactions and total blood product administration in first 24 h of admission were recorded...
October 12, 2016: Transfusion Medicine
Sarah Hoss, Yair Elizur, David Luria, Andre Keren, Chaim Lotan, Israel Gotsman
Potassium levels are often abnormal in patients with heart failure (HF) and have a detrimental effect on clinical outcome. We evaluated potassium levels in a real-world cohort of patients with HF and its effect on mortality. All patients with a diagnosis of HF at a health maintenance organization were evaluated and followed for cardiac-related hospitalizations and death. The cohort consisted of 6,073 patients with HF. Mean potassium levels were 4.57 ± 0.53 mmol/L. Most patients (68%) had potassium levels in the normal range (4...
September 15, 2016: American Journal of Cardiology
Aschalew Tamiru, Bethlehem Tigabu, Sisay Yifru, Ermias Diro, Asrat Hailu
BACKGROUND: Visceral leishmaniasis (VL) is a protozoan disease that is invariably fatal if left untreated. The disease is found in 70 countries with incidence of 0.2 - 0.4 million cases. The mainstay of treatment in resource limited countries like Ethiopia is antimonials, while use of liposomal amphotericin B is reserved for treatment of complicated VL cases. The aim of this study was to assess the safety and efficacy of liposomal amphotericin B in HIV negative VL patients diagnosed with complications...
October 10, 2016: BMC Infectious Diseases
Keith Share, Adam P Cohn, Rachel Carter, Bridget Rogers, Cary L Pint
Potassium is an earth abundant alternative to lithium for rechargeable batteries, but a critical limitation in potassium ion battery anodes is the low capacity of KC8 graphite intercalation compounds in comparison to conventional LiC6. Here we demonstrate that nitrogen doping of few-layered graphene can increase the storage capacity of potassium from a theoretical maximum of 278 mAh/g in graphite to over 350 mAh/g, competitive with anode capacity in commercial lithium-ion batteries and the highest reported anode capacity so far for potassium ion batteries...
October 9, 2016: ACS Nano
Shuiqing Zhang, Shaomin Huang, Jianwei Li, Doudou Guo, Shan Lin, Guoan Lu
BACKGROUND: The carbon sequestration potential is affected by cropping system and management practices, but soil organic carbon(SOC) sequestration potential under fertilizations remains unclear in north China. This study examined SOC change, total C input to soil, and via integration of these estimates over years, C sequestration efficiency (CSE, the ratio of SOC change over C input) under no fertilization (CK), chemical nitrogen fertilizer alone (N) or combined with phosphorus and potassium fertilizers (NP, NK, PK, NPK), or chemical fertilizers combined with low or high (1...
October 8, 2016: Journal of the Science of Food and Agriculture
Maulee Hiromi Arambewela, Noel P Somasundaram, Chaminda Garusinghe
BACKGROUND: Hypernatremia is a frequent occurrence among hospitalized patients. Severe hypernatremia is associated with mortality rates of over 60 %. Extreme hypernatremia, defined as sodium levels >190 mmol/l, is a rare occurrence. The literature on electrocardiographic changes occurring with this degree of hypernatremia is extremely scarce. We report the case of an 11-year-old Sri Lankan girl who presented with sodium levels of 226 mmol/l following infusion with 3 % hypertonic saline who developed diffuse QT prolongation leading to fatal ventricular tachycardia...
October 1, 2016: Journal of Medical Case Reports
Yue Cao, Hao Ai, Ajay Jain, Xueneng Wu, Liang Zhang, Wenxia Pei, Aiqun Chen, Guohua Xu, Shubin Sun
BACKGROUND: Phosphorus (P), an essential macronutrient, is often limiting in soils and affects plant growth and development. In Arabidopsis thaliana, Low Phosphate Root1 (LPR1) and its close paralog LPR2 encode multicopper oxidases (MCOs). They regulate meristem responses of root system to phosphate (Pi) deficiency. However, the roles of LPR gene family in rice (Oryza sativa) in maintaining Pi homeostasis have not been elucidated as yet. RESULTS: Here, the identification and expression analysis for the homologs of LPR1/2 in rice were carried out...
October 3, 2016: BMC Plant Biology
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"