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https://www.readbyqxmd.com/read/28540903/recurrent-syndrome-of-inappropriate-antidiuretic-hormone-secretion-due-to-tolterodine-in-an-elderly-male-patient
#1
Abdullah K Alhwiesh, Husain Alsharani, Eman Fathi Ibrahim, Zaid Alanazi, Bushra Ahmed AlGhamdi, Nadia Alaudah, Feras Alzahrani, Adnan Alsarawi, Ashwaqu Almohaws, Ibraheem Saeed Abdurrahman
Hyponatremia is defined as serum sodium of <135 mmol/L and equates with a low serum osmolality once translocational hyponatremia and pseudohyponatremia are ruled out. True hyponatremia develops when normal urine-diluting mechanisms are disturbed. In elderly patients, this complication is not uncommon, especially in nursing homes and assisted living facilities. Medications are often the most common cause of hyponatremia in these patients. Herewith, we reported a 65-year-old Saudi male, a known case of benign prostatic hypertrophy and hypertension, who developed recurrent hyponatremia secondary to tolterodine...
May 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28535116/is-mannitol-the-treatment-of-choice-for-patients-with-ciguatera-fish-poisoning
#2
Michael E Mullins, Robert S Hoffman
CONTEXT: Ciguatera fish poisoning arises primarily from consumption of carnivorous reef fish caught in tropical and sub-tropical waters. Ciguatoxins, a class of tasteless, heat-stable, polycyclic toxins produced by dinoflagellates, accumulate through the food chain and concentrate in various carnivorous fish, such as groupers, barracudas, wrasses, amberjack, kingfishes, and eels. Characteristics of ciguatera fish poisoning include early nausea, vomiting, and diarrhea in the first one to two days post ingestion, followed by the appearance of sensory disturbances...
May 23, 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28509122/severe-hyponatremia-in-a-patient-with-schizophrenia-associated-with-prolonged-consciousness-disturbance
#3
Kunihiko Yasuda, Takatsugu Iwashita, Yosuke Tayama, Yuko Makino, Ayumu Watanabe, Tatsuro Sano, Taisuke Shimizu, Tomonari Ogawa, Koichi Kanozawa, Hajime Hasegawa
Hyponatremia presents with various central nervous system symptoms during its course and treatment. We treated a patient who presented with a prolonged consciousness disorder and was suspected of having complications of neuroleptic malignant syndrome and osmotic demyelination syndrome (ODS) during the treatment for his hyponatremia, which was caused by syndrome of inappropriate secretion of antidiuretic hormone (SIADH). The patient was a 30-year-old Japanese man who had been under treatment for schizophrenia...
May 2017: CEN Case Reports
https://www.readbyqxmd.com/read/28493707/general-physical-description-of-the-behavior-of-oppositely-charged-polyelectrolyte-surfactant-mixtures-at-the-air-water-interface
#4
Imre Varga, Richard A Campbell
This work reports a unifying general physical description of the behavior of oppositely charged polyelectrolyte/surfactant mixtures at the air/water interface in terms of equilibrium vs nonequilibrium extremes. The poly(diallyldimethylammonium chloride)/sodium dodecyl sulfate system with added NaCl at two different bulk polyelectrolyte concentrations and the poly(sodium styrenesulfonate)/dodecyltrimethylammonium bromide system have been systematically examined using a variety of bulk and surface techniques...
May 26, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28490576/complement-c5a-functions-as-a-master-switch-for-the-ph-balance-in-neutrophils-exerting-fundamental-immunometabolic-effects
#5
Stephanie Denk, Miriam D Neher, David A C Messerer, Rebecca Wiegner, Bo Nilsson, Daniel Rittirsch, Kristina Nilsson-Ekdahl, Sebastian Weckbach, Anita Ignatius, Miriam Kalbitz, Florian Gebhard, Manfred E Weiss, Josef Vogt, Peter Radermacher, Jörg Köhl, John D Lambris, Markus S Huber-Lang
During sepsis, excessive activation of the complement system with generation of the anaphylatoxin C5a results in profound disturbances in crucial neutrophil functions. Moreover, because neutrophil activity is highly dependent on intracellular pH (pHi), we propose a direct mechanistic link between complement activation and neutrophil pHi In this article, we demonstrate that in vitro exposure of human neutrophils to C5a significantly increased pHi by selective activation of the sodium/hydrogen exchanger. Upstream signaling of C5a-mediated intracellular alkalinization was dependent on C5aR1, intracellular calcium, protein kinase C, and calmodulin, and downstream signaling regulated the release of antibacterial myeloperoxidase and lactoferrin...
May 10, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28489956/the-role-of-chlorogenic-acid-supplementation-in-anemia-and-mineral-disturbances-induced-by-4-tert-octylphenol-toxicity
#6
Khaled M M Koriem, Mahmoud S S Arbid, Nawal E Gomaa
4-tert-octylphenol (OP) is an endocrine-disrupting chemical that causes harmful effects to human health. Chlorogenic acid is the major dietary polyphenol present in various foods and beverages. The aim of the present study was to evaluate the protective role of chlorogenic acid in anemia and mineral disturbance occurring in OP toxicity in rats. Thirty-two male albino rats were divided into four equal groups (8 rats/group) as follows. The first (control) group was treated daily with an oral dose of 1 ml saline for two weeks...
May 10, 2017: Journal of Dietary Supplements
https://www.readbyqxmd.com/read/28473471/are-targeted-therapies-for-diabetic-cardiomyopathy-on-the-horizon
#7
REVIEW
Mitchel Tate, David J Grieve, Rebecca H Ritchie
Diabetes increases the risk of heart failure approximately 2.5-fold, independent of coronary artery disease and other comorbidities. This process, termed diabetic cardiomyopathy, is characterized by initial impairment of left ventricular (LV) relaxation followed by LV contractile dysfunction. Post-mortem examination reveals that human diastolic dysfunction is closely associated with LV damage, including cardiomyocyte hypertrophy, apoptosis and fibrosis, with impaired coronary microvascular perfusion. The pathophysiological mechanisms underpinning the characteristic features of diabetic cardiomyopathy remain poorly understood, although multiple factors including altered lipid metabolism, mitochondrial dysfunction, oxidative stress, endoplasmic reticulum (ER) stress, inflammation, as well as epigenetic changes, are implicated...
May 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28472512/chloroplast-function-and-ion-regulation-in-plants-growing-on-saline-soils-lessons-from-halophytes
#8
Jayakumar Bose, Rana Munns, Sergey Shabala, Matthew Gilliham, Barry Pogson, Stephen D Tyerman
Salt stress impacts multiple aspects of plant metabolism and physiology. For instance it inhibits photosynthesis through stomatal limitation, causes excessive accumulation of sodium and chloride in chloroplasts, and disturbs chloroplast potassium homeostasis. Most research on salt stress has focused primarily on cytosolic ion homeostasis with few studies of how salt stress affects chloroplast ion homeostasis. This review asks the question whether membrane-transport processes and ionic relations are differentially regulated between glycophyte and halophyte chloroplasts and whether this contributes to the superior salt tolerance of halophytes...
May 2, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28470179/autoimmune-channelopathies-as-a-novel-mechanism-in-cardiac-arrhythmias
#9
REVIEW
Pietro Enea Lazzerini, Pier Leopoldo Capecchi, Franco Laghi-Pasini, Mohamed Boutjdir
Cardiac arrhythmias confer a considerable burden of morbidity and mortality in industrialized countries. Although coronary artery disease and heart failure are the prevalent causes of cardiac arrest, in 5-15% of patients, structural abnormalities at autopsy are absent. In a proportion of these patients, mutations in genes encoding cardiac ion channels are documented (inherited channelopathies), but, to date, the molecular autopsy is negative in nearly 70% of patients. Emerging evidence indicates that autoimmunity is involved in the pathogenesis of cardiac arrhythmias...
May 4, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28458891/severe-symptomatic-hyponatremia-associated-with-the-use-of-polyethylene-glycol-based-bowel-preparation
#10
Navira Samad, Ian Fraser
SUMMARY: Colonoscopy is a useful tool in modern medicine and is increasingly employed for both diagnostic and treatment reasons. However, its effectiveness is highly reliant on the quality of bowel cleansing. Among different bowel-cleansing agents available, PEG (polyethylene glycol) is considered to be the safest cleansing agent, especially in relation to fluid and electrolyte problems. We present here a case of severe symptomatic hyponatremia that developed after the use of PEG for an elective colonoscopy...
2017: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/28458890/cerebral-salt-wasting-following-traumatic-brain-injury
#11
Peter Taylor, Sasan Dehbozorgi, Arshiya Tabasum, Anna Scholz, Harsh Bhatt, Philippa Stewart, Pranav Kumar, Mohd S Draman, Alastair Watt, Aled Rees, Caroline Hayhurst, Stephen Davies
SUMMARY: Hyponatraemia is the most commonly encountered electrolyte disturbance in neurological high dependency and intensive care units. Cerebral salt wasting (CSW) is the most elusive and challenging of the causes of hyponatraemia, and it is vital to distinguish it from the more familiar syndrome of inappropriate antidiuretic hormone (SIADH). Managing CSW requires correction of the intravascular volume depletion and hyponatraemia, as well as mitigation of on-going substantial sodium losses...
2017: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/28428757/circadian-rhythm-in-kidney-tissue-oxygenation-in-the-rat
#12
Tonja W Emans, Ben J Janssen, Jaap A Joles, C T Paul Krediet
Blood pressure, renal hemodynamics, electrolyte, and water excretion all display diurnal oscillation. Disturbance of these patterns is associated with hypertension and chronic kidney disease. Kidney oxygenation is dependent on oxygen delivery and consumption that in turn are determined by renal hemodynamics and metabolism. We hypothesized that kidney oxygenation also demonstrates 24-h periodicity. Telemetric oxygen-sensitive carbon paste electrodes were implanted in Sprague-Dawley rats (250-300 g), either in renal medulla (n = 9) or cortex (n = 7)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28421842/the-management-of-ventricular-dysrhythmia-in-aconite-poisoning
#13
REVIEW
James M Coulson, Thomas M Caparrotta, John P Thompson
INTRODUCTION: Aconite poisoning is relatively rare but is frequently complicated by ventricular dysrhythmias, which may be fatal. Molecular basis of aconite alkaloid ventricular arrhythmogenicity: Aconite exerts its toxic effects due to the presence of an admixture of alkaloids present in all parts of the plant. The major target of these aconite alkaloids is the fast voltage-gates sodium channel, where they cause persistent activation. This blockade of the channel in the activated state promotes automaticity within the ventricular myocardium and the generation of ventricular arrhythmias...
June 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28411859/cd14-plays-a-protective-role-in-experimental-inflammatory-bowel-disease-by-enhancing-intestinal-barrier-function
#14
Stephanie Buchheister, Manuela Buettner, Marijana Basic, Andreas Noack, Gerhard Breves, Barbara Buchen, Lydia M Keubler, Christoph Becker, André Bleich
Intestinal homeostasis disturbance through intestinal barrier disruption presumably plays a key role in inflammatory bowel disease (IBD) development. Genetic and candidate gene analyses in an Il10-deficient IBD mouse model system identified Cd14 as a potentially protective candidate gene. The role of Cd14 in colitis development was determined using dextran sulfate sodium (DSS)-induced acute and an Il10-deficiency-induced chronic model of intestinal inflammation. Intestinal permeability was investigated by fluorescein isothiocyanate-dextran uptake assay, quantitative RT-PCR analysis of tight junction proteins, myosin light chain kinase, and proinflammatory cytokine expression...
April 5, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28390676/nitric-oxide-donor-augments-antineoplastic-effects-of-arginine-deprivation-in-human-melanoma-cells
#15
Oksana Mayevska, Oleh Chen, Olena Karatsai, Yaroslav Bobak, Maryna Barska, Liliana Lyniv, Iuliia Pavlyk, Yuriy Rzhepetskyy, Natalia Igumentseva, Maria Jolanta Redowicz, Oleh Stasyk
Anticancer therapy based on recombinant arginine-degrading enzymes has been proposed for the treatment of several types of malignant cells deficient in arginine biosynthesis. One of the predicted side effects of such therapy is restricted bioavailability of nitric oxide as arginine catabolic product. Prolonged NO limitation may lead to unwanted disturbances in NO-dependent vasodilation, cardiovascular and immune systems. This problem can be overcome by co-supplementation with exogenous NO donor. However, NO may potentially counteract anticancer effects of therapy based on arginine deprivation...
April 5, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28372680/the-impact-of-anesthesia-on-hemodynamic-and-volume-changes-in-operative-hysteroscopy-a-bioimpedance-randomized-study
#16
Ehab E Moharram, Ahmed M El Attar, Moustafa A Kamel
BACKGROUND: Operative hysteroscopy is accompanied by the use of distention medium. Its absorption can lead to volume overload and hemodynamic disturbances that can lead to serious complications. We investigated the impact of the type of anesthesia on decreasing these complications with the use of noninvasive thoracic bioimpedance. DESIGN: A prospective, randomized, blind study. METHOD: Sixty women, with American Society of Anesthesiologists classifications I-III, undergoing operative hysteroscopy were randomly allocated into 2 groups...
May 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28358365/madecassic-acid-the-contributor-to-the-anti-colitis-effect-of-madecassoside-enhances-the-shift-of-th17-toward-treg-cells-via-the-ppar%C3%AE-ampk-acc1-pathway
#17
Xiaotian Xu, Yuhui Wang, Zhifeng Wei, Wenhui Wei, Peng Zhao, Bei Tong, Yufeng Xia, Yue Dai
The imbalance between Th17 and Treg cells substantially contributes to the intestinal immune disturbance and subsequent tissue injury in ulcerative colitis. The triterpenoid-rich fraction of Centella asiatica was able to ameliorate dextran sulfate sodium-induced colitis in mice. Here we explored its active ingredient and underlying mechanism with a focus on restoring the Th17/Treg balance. The four main triterpenoids occurring in C. asiatica were shown to attenuate colitis in mice by oral administration. The most effective ingredient madecassoside lost anti-colitis effect when applied topically in the colon, and madecassic acid was recognized to be the active form of madecassoside...
March 30, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28356138/can-floseal%C3%A2-be-applied-safely-during-otologic-surgery-assessment-of-ototoxicity-in-a-chinchilla-animal-model
#18
Carol Nhan, Aren Bezdjian, Abdullah Alarfaj, Sam J Daniel
BACKGROUND: In otologic surgery good visualization is paramount, and patients with bleeding diatheses or who need to be anti-coagulated can present a significant challenge. Here, we determine whether Floseal™, a hemostatic matrix, is ototoxic in a validated animal model. METHODS: Nine chinchillas housed in the animal care facilities of the Montreal Children's Hospital Research Institute were used for the study. After a myringotomy incision was made in each tympanic membrane, baseline auditory brainstem response measurements were performed at 8, 20, and 25 kHz...
March 29, 2017: Journal of Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/28348154/mechanisms-of-vesicular-stomatitis-virus-inactivation-by-protoporphyrin-ix-zinc-protoporphyrin-ix-and-mesoporphyrin-ix
#19
Christine Cruz-Oliveira, Andreza F Almeida, João M Freire, Marjolly B Caruso, Maria A Morando, Vivian N S Ferreira, Iranaia Assunção-Miranda, Andre M O Gomes, Miguel A R B Castanho, Andrea T Da Poian
Virus resistance to antiviral therapies is an increasing concern that makes urgent the development of broad spectrum antiviral drugs. Targeting viral envelope, a component shared by a large number of viruses, emerges as a promising strategy to overcome this problem. Natural and synthetic porphyrins, due to their relative hydrophobicity and pro-oxidant character, are good candidates for antivirals' development. In the present work, we characterized the antiviral activity of protoprophyrin IX (PPIX), Zn-protoporphyrin IX (ZnPPIX) and mesoporphyrin IX (MPIX) against vesicular stomatitis virus (VSV), and evaluated the mechanisms involved in this activity...
March 27, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28347943/the-association-between-sodium-fluctuations-and-mortality-in-surgical-patients-requiring-intensive-care
#20
Dominic C Marshall, Justin D Salciccioli, Ross J Goodson, Marco A Pimentel, Kristi Y Sun, Leo Anthony Celi, Joseph Shalhoub
PURPOSE: Serum sodium derangement is the most common electrolyte disturbance among patients admitted to intensive care. This study aims to validate the association between dysnatremia and serum sodium fluctuation with mortality in surgical intensive care patients. METHOD: We performed a retrospective analysis of the Medical Information Mart for Intensive Care II database. Dysnatremia was defined as a sodium concentration outside physiologic range (135-145mmol/L) and subjects were categorized by severity of dysnatremia and sodium fluctuation...
February 13, 2017: Journal of Critical Care
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