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Salari S, Ferreira J, Lima A, Sousa I. Effects of Particle Size on Physicochemical and Nutritional Properties and Antioxidant Activity of Apple and Carrot Pomaces. Foods 2024; 13:710. [PMID: 38472822 DOI: 10.3390/foods13050710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 02/20/2024] [Accepted: 02/23/2024] [Indexed: 03/14/2024] Open
Abstract
The food processing industry is growing rapidly and producing large amounts of by-products, such as pomaces, which are considered as no-value waste and cause significant environmental pollution. The main by-products of fruit juice processing companies are apple and carrot pomaces, which can be used to create new functional food products. In the present study, the effects of particle size (PS) on the proximate composition, nutritional properties, and antioxidant activity of apple pomace flour (APF) and carrot pomace flour (CPF) were determined. Four different PS fractions, PS > 1 mm, 1 > PS > 0.71 mm, 0.71 > PS > 0.18 mm, and 0.18 > PS > 0.075 mm were used for the present study. Their vitamin, carotenoid, organic acid, and reducing sugar contents were determined using HPLC. The proximate compositions of each PS fraction of the AP and CP flours were determined using recommended international standard methods. DPPH, FRAP, and Folin-Ciocalteu methods were used to measure their antioxidant activity and total phenolic compounds, respectively. The moisture content (around 12.1 mg/100 g) was similar in all PS fractions and in both flours. The APF had lower protein (4.3-4.6 g/100 g dw) and ash (1.7-2.0 g/100 g dw) contents compared to the CPF, with protein contents ranging from 6.4-6.8 g/100 g dw and ash contents ranging from 5.8-6.1 g/100 g dw. Smaller particles, regardless of flour type, exhibited higher sugar and phenolic contents and antioxidant activity, while vitamins were more abundant in particles larger than 1 mm. In the APF, larger particles had a higher fiber content than smaller particles, while their fat content was the lowest. PS also had an impact on the results of the carotenoid contents. This study underscores the direct impact of PS on the distribution of sugars, crude fiber, fat, carotenoids, vitamins, total phenolic compounds, and antioxidant activity in pomaces.
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Affiliation(s)
- Saeed Salari
- LEAF-Linking Landscape, Environment, Agriculture and Food-Research Centre, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal
| | - Joana Ferreira
- LEAF-Linking Landscape, Environment, Agriculture and Food-Research Centre, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal
| | - Ana Lima
- Veterinary and Animal Research Centre (CECAV), Faculty of Veterinary Medicine, Lusófona University, 376 Campo Grande, 1749-024 Lisbon, Portugal
| | - Isabel Sousa
- LEAF-Linking Landscape, Environment, Agriculture and Food-Research Centre, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal
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Yun G, Baek SH, Kim S. Evaluation and management of hypernatremia in adults: clinical perspectives. Korean J Intern Med 2022; 38:290-302. [PMID: 36578134 PMCID: PMC10175862 DOI: 10.3904/kjim.2022.346] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 11/29/2022] [Indexed: 12/30/2022] Open
Abstract
Hypernatremia is an occasionally encountered electrolyte disorder, which may lead to fatal consequences under improper management. Hypernatremia is a disorder of the homeostatic status regarding body water and sodium contents. This imbalance is the basis for the diagnostic approach to hypernatremia. We summarize the eight diagnostic steps of the traditional approach and introduce new biomarkers: exclude pseudohypernatremia, confirm glucose-corrected sodium concentrations, determine the extracellular volume status, measure urine sodium levels, measure urine volume and osmolality, check ongoing urinary electrolyte free water clearance, determine arginine vasopressin/copeptin levels, and assess other electrolyte disorders. Moreover, we suggest six steps to manage hypernatremia by replacing water deficits, ongoing water losses, and insensible water losses: identify underlying causes, distinguish between acute and chronic hypernatremia, determine the amount and rate of water administration, select the type of replacement solution, adjust the treatment schedule, and consider additional therapy for diabetes insipidus. Physicians may apply some of these steps to all patients with hypernatremia, and can also adapt the regimens for specific causes or situations.
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Affiliation(s)
- Giae Yun
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Seon Ha Baek
- Department of Internal Medicine, Hallym University Dongtan Sacred Heart Hospital, Hwaseong, Korea
| | - Sejoong Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
- Department of Internal Medicine, Hallym University Dongtan Sacred Heart Hospital, Hwaseong, Korea
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
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3
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Villalvazo P, Fernandez-Prado R, Niño MDS, Carriazo S, Fernández-Fernández B, Ortiz A, Perez-Gomez MV. Who killed Bruce Lee? The hyponatraemia hypothesis. Clin Kidney J 2022; 15:2169-2176. [PMID: 36381374 PMCID: PMC9664576 DOI: 10.1093/ckj/sfac071] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Indexed: 03/11/2024] Open
Abstract
Bruce Lee brought attention to martial arts in the Western world and popularized the quote 'Be water, my friend'. Lee died at the age of 32 years in Hong Kong on 20 July 1973, under mysterious circumstances. The cause of death is unknown, although numerous hypotheses have been proposed, from assassination by gangsters to the more recent suggestion in 2018 that he died from heatstroke. The necropsy showed cerebral oedema. A prior episode was diagnosed as cerebral oedema 2 months earlier. We now propose, based on an analysis of publicly available information, that the cause of death was cerebral oedema due to hyponatraemia. In other words, we propose that the kidney's inability to excrete excess water killed Bruce Lee. In this regard, Lee had multiple risk factors for hyponatraemia that may have included high chronic fluid intake, factors that acutely increase thirst (marijuana) and factors that decrease the ability of the kidneys to excrete water by either promoting secretion of antidiuretic hormone (ADH) or interfering with water excretion mechanisms in kidney tubules: prescription drugs (diuretics, non-steroidal anti-inflammatory drugs, opioids, antiepileptic drugs), alcohol, chronic low solute intake, a past history of acute kidney injury and exercise.
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Affiliation(s)
- Priscila Villalvazo
- Department of Nephrology and Hypertension, IIS-Fundacion Jimenez Diaz UAM, Madrid, Spain
| | - Raul Fernandez-Prado
- Department of Nephrology and Hypertension, IIS-Fundacion Jimenez Diaz UAM, Madrid, Spain
- RICORS2040; Madrid, Spain
- Departamento de Medicina, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain
| | - Maria Dolores Sánchez Niño
- Department of Nephrology and Hypertension, IIS-Fundacion Jimenez Diaz UAM, Madrid, Spain
- RICORS2040; Madrid, Spain
- Departamento de Farmacología, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain
| | - Sol Carriazo
- Department of Nephrology and Hypertension, IIS-Fundacion Jimenez Diaz UAM, Madrid, Spain
- RICORS2040; Madrid, Spain
- Departamento de Medicina, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain
| | - Beatriz Fernández-Fernández
- Department of Nephrology and Hypertension, IIS-Fundacion Jimenez Diaz UAM, Madrid, Spain
- RICORS2040; Madrid, Spain
- Departamento de Medicina, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain
| | - Alberto Ortiz
- Department of Nephrology and Hypertension, IIS-Fundacion Jimenez Diaz UAM, Madrid, Spain
- RICORS2040; Madrid, Spain
- Departamento de Medicina, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain
| | - Maria Vanessa Perez-Gomez
- Department of Nephrology and Hypertension, IIS-Fundacion Jimenez Diaz UAM, Madrid, Spain
- RICORS2040; Madrid, Spain
- Departamento de Medicina, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain
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Analysis of Sodium Content in 4082 Kinds of Commercial Foods in China. Nutrients 2022; 14:nu14142908. [PMID: 35889865 PMCID: PMC9322708 DOI: 10.3390/nu14142908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 07/09/2022] [Accepted: 07/12/2022] [Indexed: 02/04/2023] Open
Abstract
High-sodium intake is associated with the increased risk of hypertension and cardiovascular disease. Monitoring and analyzing the sodium content in commercial food is instructive for reducing sodium intake in the general population. The sodium content of 4082 commercial foods across 12 food groups and 41 food categories was collected and analyzed, including 4030 pre-packaged foods and 52 artisanal foods. The food group with the highest average sodium content (6888.6 mg/100 g) contained sauces, dressings, springs and dips, followed by bean products (1326.1 mg/100 g) and fish, meat and egg products (1302.1 mg/100 g). The average sodium content of all the collected commercial foods was 1018.6 mg/100 g. Meanwhile, the sodium content of non-alcoholic beverages (49.7 mg/100 g), confectionery (111.8 mg/100 g) and dairy products (164.1 mg/100 g) was much lower than the average sodium content of the 12 food groups. The sodium contents of different food groups and categories were significantly different. The proportion of high-sodium food (600 mg/100 g) was more than one-third of all the products. There are a few products marked with salt reduction on the package. Sixteen salt-reduced products were collected, which belong to the food category of soy sauce and account for 16% of all the soy sauce products. The average sodium content in salt-reduced soy sauce is 2022.8 mg/100 g lower than that of non-salt-reduced soy sauce products. These data provide a primary assessment with sodium content in commercial foods and potential improvements for the food industry to achievement the goal of sodium reduction.
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Divya K, Savitha D, Anjali Krishna G, Dhanya T, Mohanan P. A thiophene based pyrrolo [1, 2-a] quinoxaline fluorescent probe as a “turn-off” sensor for the selective nanomolar detection of sodium ion. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.114046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Yuen KCJ, Sharf V, Smith E, Kim M, Yuen ASM, MacDonald PR. Sodium and water perturbations in patients who had an acute stroke: clinical relevance and management strategies for the neurologist. Stroke Vasc Neurol 2021; 7:258-266. [PMID: 34969834 PMCID: PMC9240457 DOI: 10.1136/svn-2021-001230] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Accepted: 11/26/2021] [Indexed: 12/17/2022] Open
Abstract
Sodium and water perturbations, manifesting as hyponatraemia and hypernatraemia, are common in patients who had an acute stroke, and are associated with worse outcomes and increased mortality. Other non-stroke-related causes of sodium and water perturbations in these patients include underlying comorbidities and concomitant medications. Additionally, hospitalised patients who had an acute stroke may receive excessive intravenous hypotonic solutions, have poor fluid intake due to impaired neurocognition and consciousness, may develop sepsis or are administered drugs (eg, mannitol); factors that can further alter serum sodium levels. Sodium and water perturbations can also be exacerbated by the development of endocrine consequences after an acute stroke, including secondary adrenal insufficiency, syndrome of inappropriate antidiuretic hormone secretion and diabetes insipidus. Recently, COVID-19 infection has been reported to increase the risk of development of sodium and water perturbations that may further worsen the outcomes of patients who had an acute stroke. Because there are currently no accepted consensus guidelines on the management of sodium and water perturbations in patients who had an acute stroke, we conducted a systematic review of the literature published in English and in peer-reviewed journals between January 2000 and December 2020, according to PRISMA guidelines, to assess on the current knowledge and clinical practices of this condition. In this review, we discuss the signs and symptoms of hyponatraemia and hypernatraemia, the pathogenesis of hyponatraemia and hypernatraemia, their clinical relevance, and we provide our recommendations for effective treatment strategies for the neurologist in the management of sodium and water perturbations in commonly encountered aetiologies of patients who had an acute stroke.
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Affiliation(s)
- Kevin C J Yuen
- Departments of Neuroendocrinology and Neurosurgery, Barrow Neurological Institute, Phoenix, Arizona, USA .,University of Arizona College of Medicine and Creighton School of Medicine, Phoenix, Arizona, USA
| | - Valerie Sharf
- University of Arizona College of Medicine and Creighton School of Medicine, Phoenix, Arizona, USA.,Department of Neurology, Barrow Neurological Institute, Phoenix, Arizona, USA
| | | | - Minhwan Kim
- Creighton University School of Medicine, Phoenix, Arizona, USA
| | | | - Paul R MacDonald
- University of Arizona College of Medicine and Creighton School of Medicine, Phoenix, Arizona, USA.,Department of Neurology, Barrow Neurological Institute, Phoenix, Arizona, USA
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Kovrlija I, Locs J, Loca D. Incorporation of Barium Ions into Biomaterials: Dangerous Liaison or Potential Revolution? MATERIALS (BASEL, SWITZERLAND) 2021; 14:5772. [PMID: 34640168 PMCID: PMC8510018 DOI: 10.3390/ma14195772] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 09/29/2021] [Indexed: 01/07/2023]
Abstract
In the present manuscript, a brief overview on barium, its possible utilization, and the aftermath of its behavior in organisms has been presented. As a bivalent cation, barium has the potential to be used in a myriad of biochemical reactions. A number of studies have exhibited both the unwanted outcome barium displayed and the advantages of barium laden compounds, tested in in vitro and in vivo settings. The plethora of prospective manipulations covered the area of hydrogels and calcium phosphates, with an end goal of examining barium's future in the tissue engineering. However, majority of data revert to the research conducted in the 20th century, without investigating the mechanisms of action using current state-of-the-art technology. Having this in mind, set of questions that are needed for possible future research arose. Can barium be used as a substitute for other biologically relevant divalent cations? Will the incorporation of barium ions hamper the execution of the essential processes in the organism? Most importantly, can the benefits outweigh the harm?
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Affiliation(s)
- Ilijana Kovrlija
- Rudolfs Cimdins Riga Biomaterials Innovation and Development Centre, Faculty of Materials Science and Applied Chemistry, Institute of General Chemical Engineering, Riga Technical University, Pulka 3, LV-1007 Riga, Latvia; (I.K.); (J.L.)
| | - Janis Locs
- Rudolfs Cimdins Riga Biomaterials Innovation and Development Centre, Faculty of Materials Science and Applied Chemistry, Institute of General Chemical Engineering, Riga Technical University, Pulka 3, LV-1007 Riga, Latvia; (I.K.); (J.L.)
- Baltic Biomaterials Centre of Excellence, Headquarters at Riga Technical University, Kaļķu Street 1, LV-1658 Riga, Latvia
| | - Dagnija Loca
- Rudolfs Cimdins Riga Biomaterials Innovation and Development Centre, Faculty of Materials Science and Applied Chemistry, Institute of General Chemical Engineering, Riga Technical University, Pulka 3, LV-1007 Riga, Latvia; (I.K.); (J.L.)
- Baltic Biomaterials Centre of Excellence, Headquarters at Riga Technical University, Kaļķu Street 1, LV-1658 Riga, Latvia
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8
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Vinitha K, Leena MM, Moses J, Anandharamakrishnan C. Size-dependent enhancement in salt perception: Spraying approaches to reduce sodium content in foods. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2020.09.079] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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9
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Iro MA, Sell T, Brown N, Maitland K. Rapid intravenous rehydration of children with acute gastroenteritis and dehydration: a systematic review and meta-analysis. BMC Pediatr 2018; 18:44. [PMID: 29426307 PMCID: PMC5807758 DOI: 10.1186/s12887-018-1006-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Accepted: 01/23/2018] [Indexed: 12/01/2022] Open
Abstract
Background The World Health Organization (WHO) recommends rapid intravenous rehydration, using fluid volumes of 70-100mls/kg over 3–6 h, with some of the initial volume given rapidly as initial fluid boluses to treat hypovolaemic shock for children with acute gastroenteritis (AGE) and severe dehydration. The evidence supporting the safety and efficacy of rapid versus slower rehydration remains uncertain. Methods We conducted a systematic review of randomised controlled trials (RCTs) on 11th of May 2017 comparing different rates of intravenous fluid therapy in children with AGE and moderate or severe dehydration, using standard search terms. Two authors independently assessed trial quality and extracted data. Non-RCTs and non-English articles were excluded. The primary endpoint was mortality and secondary endpoints included adverse events (safety) and treatment efficacy. Main results Of the 1390 studies initially identified, 18 were assessed for eligibility. Of these, 3 studies (n = 464) fulfilled a priori criteria for inclusion; most studied children with moderate dehydration and none were conducted in resource-poor settings. Volumes and rates of fluid replacement varied from 20 to 60 ml/kg given over 1-2 h (fast) versus 2-4 h (slow). There was substantial heterogeneity in methodology between the studies with only one adjudicated to be of high quality. There were no deaths in any study. Safety endpoints only identified oedema (n = 6) and dysnatraemia (n = 2). Pooled analysis showed no significant difference between the rapid and slow intravenous rehydration groups for the proportion of treatment failures (N = 468): pooled RR 1.30 (95% CI: 0.87, 1.93) and the readmission rates (N = 439): pooled RR 1.39 (95% CI: 0.68, 2.85). Conclusions Despite wide implementation of WHO Plan C guideline for severe AGE, we found no clinical evaluation in resource-limited settings, and only limited evaluation of the rate and volume of rehydration in other parts of the world. Recent concerns over aggressive fluid expansion warrants further research to inform guidelines on rates of intravenous rehydration therapy for severe AGE. Electronic supplementary material The online version of this article (10.1186/s12887-018-1006-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- M A Iro
- Oxford Vaccine Group, Department of Paediatrics and the NIHR Biomedical Research Centre, University of Oxford, Headington, Oxford, OX3 7LE, UK
| | - T Sell
- Oxford Vaccine Group, Department of Paediatrics and the NIHR Biomedical Research Centre, University of Oxford, Headington, Oxford, OX3 7LE, UK
| | - N Brown
- Department of Paediatrics, Salisbury District Hospital, Salisbury, SP2 8BJ, UK.,Department of Child Health, Aga Khan University, Karachi, Pakistan
| | - K Maitland
- Department of Paediatrics, Faculty of Medicine, Wellcome Trust Centre for Clinical Tropical Medicine, Imperial College, W2 1PG, London, UK. .,Clinical Trials Facility, KEMRI Wellcome Trust Research Programme, PO Box 230, Kilifi, Kenya.
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10
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Miller AJ, Theou O, McMillan M, Howlett SE, Tennankore KK, Rockwood K. Dysnatremia in Relation to Frailty and Age in Community-dwelling Adults in the National Health and Nutrition Examination Survey. J Gerontol A Biol Sci Med Sci 2017; 72:376-381. [PMID: 27356976 DOI: 10.1093/gerona/glw114] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Accepted: 06/03/2016] [Indexed: 01/05/2023] Open
Abstract
Background Frailty represents an age-related state of increased risk of adverse health outcomes, reflecting some combination of increased damage and compromised repair processes. Our objectives were to establish whether frailty is associated with dysnatremia (a deviation of serum sodium from normal values), to determine whether frailty explains the previously established association between age and dysnatremia and to assay the impact of each on mortality. Methods The relationship between age, frailty, and dysnatremia was investigated across the adult life course in 8,911 respondents from the 2003-2004 and 2005-2006 cross-sectional National Health and Nutrition Examination Survey, on whom both laboratory and mortality data were available. A frailty index (FI) was calculated for each respondent and related to dysnatremia (serum sodium values outside a 136-144 mmol/L reference range). Results Dysnatremia was significantly related to both age and frailty; as the degree of frailty increased, so did the proportion with dysnatremia, for example, from 4.1% in those with FI less than 0.10, to 12.4% in those with FI 0.40 or more; p less than .001. Adjusted for frailty, the relationship between age and dysnatremia was no longer significant. In the age- and sex-adjusted Cox models, both frailty (hazard ratio [HR]: 1.05; 95% confidence interval [CI]: 1.04-1.05 for every 0.01 increase in FI) and dysnatremia (HR: 1.85; 95% CI: 1.51-2.26) were significant predictors of mortality; when hyponatremia was separated from hypernatremia in the Cox models, hypernatremia wasn't significant, but only 41 participants were identified as hypernatremic. Conclusion Increasing frailty is associated with dysnatremia and confounds the association between age and dysnatremia.
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Affiliation(s)
| | | | | | - Susan E Howlett
- Division of Geriatric Medicine, and.,Department of Pharmacology, Dalhousie University, Halifax, Nova Scotia, Canada
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Management Challenges in a Child with Chronic Hyponatremia: Use of V2 Receptor Antagonist. Case Rep Pediatr 2017; 2017:3757423. [PMID: 28149654 PMCID: PMC5253166 DOI: 10.1155/2017/3757423] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 12/08/2016] [Accepted: 12/12/2016] [Indexed: 11/18/2022] Open
Abstract
Chronic hyponatremia is very rare in children and is often seen in the setting of congestive heart failure or liver failure in adults. Here, we report an 8-year-old child with hypothalamic glioma who presented with severe hyponatremia. Initial management consisted of fluid restriction. This was very difficult for the child to follow and the child developed bizarre drinking habits requiring intervention from child psychiatry. So therapy was initiated with low dose V2 receptor antagonist under close inpatient monitoring. While initial response was reassuring, her sodium levels tended to drift down with longer duration of treatment requiring us to increase the dose frequently. Her response to therapy and her stable clinical situation off therapy suggest that she may have reset osmostat.
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Fortin SM, Roitman MF. Physiological state tunes mesolimbic signaling: Lessons from sodium appetite and inspiration from Randall R. Sakai. Physiol Behav 2016; 178:21-27. [PMID: 27876640 DOI: 10.1016/j.physbeh.2016.11.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 10/31/2016] [Accepted: 11/18/2016] [Indexed: 12/22/2022]
Abstract
Sodium deficit poses a life-threatening challenge to body fluid homeostasis and generates a sodium appetite - the behavioral drive to ingest sodium. Dr. Randall R. Sakai greatly contributed to our understanding of the hormonal responses to negative sodium balance and to the central processing of these signals. Reactivity to the taste of sodium solutions and the motivation to seek and consume sodium changes dramatically with body fluid balance. Here, we review studies that collectively suggest that sodium deficit recruits the mesolimbic system to play a role in the behavioral expression of sodium appetite. The recruitment of the mesolimbic system likely contributes to intense sodium seeking and reinforces sodium consumption observed in deficient animals. Some of the hormones that are released in response to sodium deficit act directly on both dopamine and nucleus accumbens elements. Moreover, the taste of sodium in sodium deficient rats evokes a pattern of dopamine and nucleus accumbens activity that is similar to responses to rewarding stimuli. A very different pattern of activity is observed in non-deficient rats. Given the well-characterized endocrine response to sodium deficit and its central action, sodium appetite becomes an ideal model for understanding the role of mesolimbic signaling in reward, reinforcement and the generation of motivated behavior.
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Affiliation(s)
- Samantha M Fortin
- Department of Psychology and Graduate Program in Neuroscience, University of Illinois at Chicago, 1007 W Harrison St, Chicago, IL 60607, United States
| | - Mitchell F Roitman
- Department of Psychology and Graduate Program in Neuroscience, University of Illinois at Chicago, 1007 W Harrison St, Chicago, IL 60607, United States.
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Azzarito T, Lugini L, Spugnini EP, Canese R, Gugliotta A, Fidanza S, Fais S. Effect of Modified Alkaline Supplementation on Syngenic Melanoma Growth in CB57/BL Mice. PLoS One 2016; 11:e0159763. [PMID: 27447181 PMCID: PMC4957829 DOI: 10.1371/journal.pone.0159763] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Accepted: 07/06/2016] [Indexed: 02/08/2023] Open
Abstract
Tumor extracellular acidity is a hallmark of malignant cancers. Thus, in this study we evaluated the effects of the oral administration of a commercially available water alkalizer (Basenpulver®) (BP) on tumor growth in a syngenic melanoma mouse model. The alkalizer was administered daily by oral gavage starting one week after tumor implantation in CB57/BL mice. Tumors were calipered and their acidity measured by in vivo MRI guided 31P MRS. Furthermore, urine pH was monitored for potential metabolic alkalosis. BP administration significantly reduced melanoma growth in mice; the optimal dose in terms of tolerability and efficacy was 8 g/l (p< 0.05). The in vivo results were supported by in vitro experiments, wherein BP-treated human and murine melanoma cell cultures exhibited a dose-dependent inhibition of tumor cell growth. This investigation provides the first proof of concept that systemic buffering can improve tumor control by itself and that this approach may represent a new strategy in prevention and/or treatment of cancers.
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Affiliation(s)
- Tommaso Azzarito
- Department of Drug Research and Medicine Evaluation, National Institute of Health, Rome, Italy
| | - Luana Lugini
- Department of Drug Research and Medicine Evaluation, National Institute of Health, Rome, Italy
| | | | - Rossella Canese
- Department of Cell Biology and Neurosciences, National Institute of Health, Rome, Italy
| | - Alessio Gugliotta
- Department of Drug Research and Medicine Evaluation, National Institute of Health, Rome, Italy
| | - Stefano Fidanza
- Department of Drug Research and Medicine Evaluation, National Institute of Health, Rome, Italy
| | - Stefano Fais
- Department of Drug Research and Medicine Evaluation, National Institute of Health, Rome, Italy
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Liamis G, Filippatos TD, Elisaf MS. Evaluation and treatment of hypernatremia: a practical guide for physicians. Postgrad Med 2016; 128:299-306. [PMID: 26813151 DOI: 10.1080/00325481.2016.1147322] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Hypernatremia (serum sodium concentration >145 mEq/L) is a common electrolyte disorder with increased morbidity and mortality especially in the elderly and critically ill patients. The review presents the main pathogenetic mechanisms of hypernatremia, provides specific directions for the evaluation of patients with increased sodium levels and describes a detailed algorithm for the proper correction of hypernatremia. Furthermore, two representative cases of hypovolemic and hypervolemic hypernatremia are presented along with practical clues for their proper evaluation and treatment. Accurate diagnosis and appropriate treatment is crucial since undercorrection or overcorrection of hypernatremia are both associated with poor patients' prognosis.
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Affiliation(s)
- George Liamis
- a Department of Internal Medicine , School of Medicine, University of Ioannina , Ioannina , Greece
| | - Theodosios D Filippatos
- a Department of Internal Medicine , School of Medicine, University of Ioannina , Ioannina , Greece
| | - Moses S Elisaf
- a Department of Internal Medicine , School of Medicine, University of Ioannina , Ioannina , Greece
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Norgan AP, Sarfani S, Kautz JM. 53-Year-Old Man With Hypernatremia and Encephalopathy. Mayo Clin Proc 2015; 90:824-7. [PMID: 26046415 DOI: 10.1016/j.mayocp.2014.10.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Revised: 10/02/2014] [Accepted: 10/15/2014] [Indexed: 11/20/2022]
Affiliation(s)
- Andrew P Norgan
- Resident in Internal Medicine, Mayo School of Graduate Medical Education, Rochester, MN
| | | | - Jordan M Kautz
- Advisor to resident and medical student and Consultant in General Internal Medicine, Mayo Clinic, Rochester, MN.
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Quilaqueo M, Aguilera JM. Dissolution of NaCl crystals in artificial saliva and water by video-microscopy. Food Res Int 2015. [DOI: 10.1016/j.foodres.2015.01.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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