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Bicarbonate

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https://www.readbyqxmd.com/read/28102546/ataluren-and-similar-compounds-specific-therapies-for-premature-termination-codon-class-i-mutations-for-cystic-fibrosis
#1
REVIEW
Aisha A Aslam, Colin Higgins, Ian P Sinha, Kevin W Southern
BACKGROUND: Cystic fibrosis is a common life-shortening genetic disorder in the Caucasian population (less common in other ethnic groups) caused by the mutation of a single gene that codes for the production of the cystic fibrosis transmembrane conductance regulator protein. This protein coordinates the transport of salt (and bicarbonate) across cell surfaces and the mutation most notably affects the airways. In the lungs of people with cystic fibrosis, defective protein results in a dehydrated surface liquid and compromised mucociliary clearance...
January 19, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28099364/endoscopic-retrieval-of-gastric-trichophytobezoar-case-report-of-a-12-year-old-girl-with-trichophagia
#2
Jiu-Ling Zhao, Wei-Chuan Zhao, Yu-Shui Wang
RATIONALE: Trichophytobezoars, which are composed of hair and plant fibers, are usually located in the stomach. They are often associated with trichophagia and trichotillomania. The most commonly reported methods of trichophytobezoar treatment are open surgery and laparoscopic retrieval; there are few reports of endoscopic removal of trichophytobezoars. PATIENT CONCERNS AND DIAGNOSES: Twelve-year-old girl presented with a 3-day history of increasing upper abdominal pain, anorexia, and postprandial emesis...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28099256/diagnosis-of-chronic-pancreatitis-incorporating-endosonographic-features-demographics-and-behavioral-risk
#3
Linda S Lee, Ying P Tabak, Vivek Kadiyala, Xiaowu Sun, Shadeah Suleiman, Richard S Johannes, Peter A Banks, Darwin L Conwell
OBJECTIVES: Diagnosing chronic pancreatitis remains challenging. Endoscopic ultrasound (EUS) is utilized to evaluate pancreatic disease. Abnormal pancreas function test is considered the "nonhistologic" criterion standard for chronic pancreatitis. We derived a prediction model for abnormal endoscopic pancreatic function test (ePFT) by enriching EUS findings with patient demographic and pancreatitis behavioral risk characteristics. METHODS: Demographics, behavioral risk characteristics, EUS findings, and peak bicarbonate results were collected from patients evaluated for pancreatic disease...
January 18, 2017: Pancreas
https://www.readbyqxmd.com/read/28098099/the-evaluation-of-the-relationship-between-serum-levels-of-interleukin-6-and-interleukin-10-and-metabolic-acidosis-in-hemodialysis-patients
#4
Narges Sadat Zahed, Saghar Chehrazi
Chronic kidney disease is defined as progressive kidney dysfunction. The levels of various cytokines increase in hemodialysis (HD) patients. High levels of interleukins (ILs) and presence of metabolic acidosis are described as independent risk factors for morbidity and mortality in these patients. This study was designed to evaluate the relationship between IL-6 and IL-10 and serum bicarbonate and metabolic acidosis in HD patients. In this analytical crosssectional study, patients referred to the HD units of Loghman Hakim and Shahid Ashrafi Esfahani Hospitals were randomly selected...
January 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28092126/stability-of-a-novel-corticosteroid-nasal-irrigation-solution-betamethasone-17-valerate-added-to-extemporaneously-prepared-nasal-irrigation-solutions
#5
Kheng Yong Ong, Wei Ching Lim, Shing Ming Ooi, Zhi Hui Loh, Ming Chai Kong, Lai Wah Chan, Paul Wan Sia Heng
BACKGROUND: There are no commercially available nasal irrigation solutions containing corticosteroids. Instead, such preparations are extemporaneously prepared by adding existing corticosteroid formulations to nasal irrigation solutions. The stability of the corticosteroid betamethasone 17-valerate (B17V), in nasal irrigation solutions of different compositions and pH and stored under different temperatures, was studied to determine the optimal choice of solution and storage conditions...
January 16, 2017: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/28091885/assessing-the-impact-of-preload-on-pyrite-rich-sediment-and-groundwater-quality
#6
Ohene Karikari-Yeboah, Jonas Addai-Mensah
Pyrite-rich sediments would, invariably, undergo redox reactions which would lead to acidic aqueous environment containing solubilized toxic metal species. When such sediments are subjected to preload, a technique employed by geotechnical engineers to improve the load-bearing capacity of highly compressible formation, transient flow of pore water, accompanied by acidity transfer, would occur as a response. Despite the concomitant environmental and socio-economic significance, to date, there has been limited interdisciplinary research on the underpinning geotechnical engineering and geo-environmental science issues for pyrite-rich sediments under preload...
February 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28091436/acute-kidney-injury-in-lagos-pattern-outcomes-and-predictors-of-in-hospital-mortality
#7
B T Bello, A A Busari, C O Amira, Y R Raji, R W Braimoh
CONTEXT: The pattern of acute kidney injury (AKI) differs significantly between developed and developing countries. AIMS: The aim of th study was to determine the pattern and clinical outcomes of AKI in Lagos, Southwest Nigeria. SETTINGS AND DESIGN: A retrospective review of hospital records of all patients with a diagnosis of AKI over a 20-month period. SUBJECTS AND METHODS: Records of 54 patients were reviewed. Information retrieved included, bio-data, etiology of AKI, results of laboratory investigations, and patient outcomes...
February 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/28089727/clinical-characteristics-associated-with-days-to-discharge-among-patients-admitted-with-a-primary-diagnosis-of-lower-limb-cellulitis
#8
Amit Garg, Jonathan Lavian, Gloria Lin, Cristina Sison, Michael Oppenheim, Bonnie Koo
BACKGROUND: Clinicians have limited ability to classify risk of prolonged hospitalization among patients with lower limb cellulitis. OBJECTIVE: We sought to identify characteristics associated with days to discharge and prolonged stay. METHODS: We conducted retrospective cohort analysis including patients admitted with a primary diagnosis of lower limb cellulitis at community and tertiary hospitals. RESULTS: There were 4224 admissions for lower limb cellulitis among 3692 patients...
January 12, 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/28089277/accurate-determination-of-residual-acrylic-acid-in-superabsorbent-polymer-of-hygiene-products-by-headspace-gas-chromatography
#9
Shu-Xin Zhang, Xin-Sheng Chai, Ran Jiang
This work reports on a method for the determination of residual acrylic acid (AA) in the superabsorbent polymers for hygiene products by headspace analysis. It was based on water extraction for the polymer sample at a room temperature for 50min. Then, the AA in the extractant reacted with bicarbonate solution in a closed headspace sample vial, from which the carbon dioxide generated from the reaction (within 20min at 70°C) was detected by gas chromatography (GC). It was found that there is adsorption partition equilibrium of AA between solid-liquid phases...
January 10, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28088630/support-dependent-active-species-formation-for-cuo-catalysts-leading-to-efficient-pollutant-degradation-in-alkaline-conditions
#10
Yibing Li, Lianshuang Guo, Dekang Huang, Ali Jawad, Zhuqi Chen, Jiakuan Yang, Weidong Liu, Yan Shen, Mingkui Wang, Guochuan Yin
Redox metal ions play the crucial role in versatile advanced oxidation technologies, in which controlling the active species formation through catalyst design is one of the key challenges in oxidant utilization. This work describes an example of different active species formations in CuO-mediated degradation just because of supporting material differences. Although three CuO catalysts were prepared by similar procedures, it was found that CuO-MgO catalyst demonstrated high efficiency in phenol degradation with bicarbonate activated H2O2, in which the superoxide radical is crucial, while hydroxyl radical and singlet oxygen are ignorable...
December 31, 2016: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28087757/alternative-transcription-of-sodium-bicarbonate-transporter-slc4a7-gene-enhanced-by-single-nucleotide-polymorphisms
#11
Hae Jeong Park, Soojung Lee, Eunji Ju, Jayre A Jones, Inyeong Choi
Genome-wide association studies have identified the single nucleotide polymorphism (SNP) rs3278 in the human SLC4A7 gene as one of the marker loci for addiction vulnerability. This marker is located in an intron of the gene, and its genomic role has been unknown. In this study, we examined rs3278 and three adjacent SNPs prevalent in alcoholics for their effects on an alternative promoter that would lead to the production of the N-terminally truncated protein NBCn1ΔN450, missing the first 450 amino acids. Analysis of the transcription start site database and a promoter prediction algorithm identified a cluster of three promoters in intron 7 and two short CpG-rich sites in intron 6...
January 13, 2017: Physiological Genomics
https://www.readbyqxmd.com/read/28086748/genetic-mechanisms-of-bone-digestion-and-nutrient-absorption-in-the-bone-eating-worm-osedax-japonicus-inferred-from-transcriptome-and-gene-expression-analyses
#12
Norio Miyamoto, Masa-Aki Yoshida, Hiroyuki Koga, Yoshihiro Fujiwara
BACKGROUND: Bone-eating worms of the genus Osedax (Annelida, Siboglinidae) have adapted to whale fall environments by acquiring a novel characteristic called the root, which branches and penetrates into sunken bones. The worms lack a digestive tract and mouth opening, and it has been suggested that Osedax degrade vertebrate bones and uptake nutrients through acidification and secretion of enzymes from the root. Symbiotic bacteria in the root tissue may have a crucial role in the metabolism of Osedax...
January 13, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28080914/tricaine-methanesulfonate-ms-222-sedation-and-anesthesia-in-the-purple-spined-sea-urchin-arbacia-punctulata
#13
Jeffrey R Applegate, Daniel S Dombrowski, Larry Shane Christian, Meredith P Bayer, Craig A Harms, Gregory A Lewbart
The purple-spined sea urchin ( Arbacia punctulata ) is commonly found in shallow waters of the western Atlantic Ocean from the New England area of the United States to the Caribbean. Sea urchins play a major role in ocean ecology, echinoculture, and biomedical research. Additionally, sea urchins are commonly displayed in public aquaria. Baseline parameters were developed in unanesthetized urchins for righting reflex (time to regain oral recumbency) and spine response time to tactile stimulus. Tricaine methanesulfonate (MS-222) was used to sedate and anesthetize purple-spined sea urchins and assess sedation and anesthetic parameters, including adhesion to and release from a vertical surface, times to loss of response to tactile stimulus and recovery of righting reflex, and qualitative observations of induction of spawning and position of spines and pseudopodia...
December 2016: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28077541/the-role-of-bicarbonate-precursors-in-balanced-fluids-during-haemorrhagic-shock-with-and-without-compromised-liver-function
#14
B Ergin, A Kapucu, P Guerci, C Ince
BACKGROUND: Lactate, acetate, and gluconate are anions used in balanced resuscitation fluids, of which lactate and acetate are considered bicarbonate precursors. This study investigated the role of the liver in the ability of balanced and unbalanced solutions to correct acid-base alterations and renal haemodynamics and microvascular oxygenation in a rat model of resuscitated haemorrhagic shock. METHODS: Ringer's lactate, Ringer's acetate, PlasmaLyte, or normal saline were administered following haemorrhagic shock in the presence or absence of a 70% partial liver resection...
October 2016: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28077531/sodium-bicarbonate-does-not-prevent-postoperative-acute-kidney-injury-after-off-pump-coronary-revascularization-a-double-blinded-randomized-controlled-trial
#15
S Soh, J W Song, J K Shim, J H Kim, Y L Kwak
BACKGROUND: Acute kidney injury (AKI) is a common morbidity after off-pump coronary revascularization. We investigated whether perioperative administration of sodium bicarbonate, which might reduce renal injury by alleviating oxidative stress in renal tubules, prevents postoperative AKI in off-pump coronary revascularization patients having renal risk factors. METHODS: Patients (n=162) having at least one of the following AKI risk factors were enrolled: (i) age >70 yr; (ii) diabetes mellitus; (iii) chronic renal disease; (iv) congestive heart failure or left ventricular ejection fraction <35%; and (v) reoperation or emergency...
October 2016: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28077244/the-catsper-channel-modulates-boar-sperm-motility-during-capacitation
#16
Alejandro Vicente-Carrillo, Manuel Álvarez-Rodríguez, Heriberto Rodríguez-Martínez
The cation channel of sperm (CatSper) comprises four transmembrane subunits specifically expressed in human, equine, murine and ovine spermatozoa, apparently implicated in capacitation, hyperactivation and acrosome exocytosis. Western blotting and immunocytochemistry showed hereby that CatSper subunits are also present in boar spermatozoa, primarily over the sperm neck, tail and cytoplasmic droplets; albeit CatSper -1 presented in addition some distribution over the membrane of the acrosome and CatSper -2 and -4 over the membrane of the post-acrosome...
January 8, 2017: Reproductive Biology
https://www.readbyqxmd.com/read/28076430/effects-of-zn-deficiency-and-bicarbonate-on-the-growth-and-photosynthetic-characteristics-of-four-plant-species
#17
Kuan Zhao, Yanyou Wu
Calcareous soils are characterized by low nutrient contents, high bicarbonate (HCO3-) content, and high alkalinity. The effects of HCO3- addition under zinc-sufficient (+Zn) and zinc-deficient (-Zn) conditions on the growth and photosynthetic characteristics of seedlings of two Moraceae species (Broussonetia papyrifera and Morus alba) and two Brassicaceae species (Orychophragmus violaceus and Brassica napus) were investigated. These four species were hydroponically grown in nutrient solution with 0 mM Zn (-Zn) or 0...
2017: PloS One
https://www.readbyqxmd.com/read/28076384/anti-epileptic-drug-combination-efficacy-in-an-in-vitro-seizure-model-phenytoin-and-valproate-lamotrigine-and-valproate
#18
Kim Det Taing, Terence J O'Brien, David A Williams, Chris R French
In this study, we investigated the relative efficacy of different classes of commonly used anti-epileptic drugs (AEDs) with different mechanisms of action, individually and in combination, to suppress epileptiform discharges in an in vitro model. Extracellular field potential were recorded in 450 μm thick transverse hippocampal slices prepared from juvenile Wistar rats, in which "epileptiform discharges" (ED's) were produced with a high-K+ (8.5 mM) bicarbonate-buffered saline solution. Single and dual recordings in stratum pyramidale of CA1 and CA3 regions were performed with 3-5 MΩ glass microelectrodes...
2017: PloS One
https://www.readbyqxmd.com/read/28074546/-hypoxia-and-cellular-metabolism-in-tumour-pathophysiology
#19
Scott K Parks, Yann Cormerais, Jacques Pouysségur
Cancer cells are optimized for growth and survival via an ability to outcompete normal cells in their microenvironment. Many of these advantageous cellular adaptations are promoted by the pathophysiological hypoxia that arises in solid tumours due to incomplete vascularisation. Tumour cells are thus faced with the challenge of an increased need for nutrients to support the drive for proliferation in the face of a diminished extracellular supply. Among the many modifications occurring in tumour cells, Hypoxia Inducible Factors (HIFs) act as essential drivers of key pro-survival pathways via the promotion of numerous membrane and cytosolic proteins...
January 10, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28073473/how-rising-co2-and-global-warming-may-stimulate-harmful-cyanobacterial-blooms
#20
REVIEW
Petra M Visser, Jolanda M H Verspagen, Giovanni Sandrini, Lucas J Stal, Hans C P Matthijs, Timothy W Davis, Hans W Paerl, Jef Huisman
Climate change is likely to stimulate the development of harmful cyanobacterial blooms in eutrophic waters, with negative consequences for water quality of many lakes, reservoirs and brackish ecosystems across the globe. In addition to effects of temperature and eutrophication, recent research has shed new light on the possible implications of rising atmospheric CO2 concentrations. Depletion of dissolved CO2 by dense cyanobacterial blooms creates a concentration gradient across the air-water interface. A steeper gradient at elevated atmospheric CO2 concentrations will lead to a greater influx of CO2, which can be intercepted by surface-dwelling blooms, thus intensifying cyanobacterial blooms in eutrophic waters...
April 2016: Harmful Algae
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