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Acid base disturbance

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https://www.readbyqxmd.com/read/29227833/vitamin-a-deficiency-in-mice-alters-host-and-gut-microbial-metabolism-leading-to-altered-energy-homeostasis
#1
Yuan Tian, Robert G Nichols, Jingwei Cai, Andrew D Patterson, Margherita T Cantorna
Vitamin A deficiency (A-) is a worldwide public health problem. To better understand how vitamin A status influences gut microbiota and host metabolism, we systematically analyzed urine, cecum, serum and liver samples from vitamin A sufficient (A+) and deficient (A-) mice using 1H NMR-based metabolomics, quantitative (q)PCR and 16S rRNA gene sequencing coupled with multivariate data analysis. The microbiota in the cecum of A- mice showed compositional as well as functional shifts compared to the microbiota from A+ mice...
November 5, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29221177/untargeted-serum-metabonomics-study-of-psoriasis-vulgaris-based-on-ultra-performance-liquid-chromatography-coupled-to-mass-spectrometry
#2
Li Li, Lu Chuan-Jian, Han Ling, Deng Jing-Wen, He Ze-Hui, Yan Yu-Hong, Zhang Zhong-Zhao
Psoriasis is a common, chronic, systemic inflammatory skin disease, the etiology and pathogenesis is unclear. An untargeted high-throughput metabonomics method based on liquid chromatography coupled to mass spectrometry was applied to study the serum metabolic changes in psoriasis vulgaris patients, and to discover serum potential biomarkers for identification, diagnosis and exploring pathogenesis of psoriasis. The serum metabolic profiles from 150 subjects (75 psoriasis patients and 75 healthy controls) were acquired, the raw spectrometric data were processed by multivariate statistical analysis, and 44 potential biomarkers were screened out and identified...
November 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29214531/in-situ-accurate-surface-enhanced-raman-scattering-detection-of-cancer-cell-nucleus-with-synchronous-location-by-an-alkyne-labeled-biomolecular-probe
#3
Jing Zhang, Lijia Liang, Xin Guan, Rong Deng, Huixin Qu, Dianshuai Huang, Shuping Xu, Chongyang Liang, Weiqing Xu
A surface-enhanced Raman scattering (SERS) method for in situ detection and analysis of the intranuclear biomolecular information of a cell has been developed based on a small, biocompatible, nuclear-targeting alkyne-tagged deoxyribonucleic acid (DNA) probe (5-ethynyl-2'-deoxyuridine, EDU) that can specially accumulate in the cell nucleus during DNA replications to precisely locate the nuclear region without disturbance in cell biological activities and functions. Since the specific alkyne group shows a Raman peak in the Raman-silent region of cells, it is an interior label to visualize the nuclear location synchronously in real time when measuring the SERS spectra of a cell...
December 6, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/29213243/mechanism-of-chinese-medicine-herbs-effects-on-chronic-heart-failure-based-on-metabolic-profiling
#4
Kuo Gao, Huihui Zhao, Jian Gao, Binyu Wen, Caixia Jia, Zhiyong Wang, Feilong Zhang, Jinping Wang, Hua Xie, Juan Wang, Wei Wang, Jianxin Chen
Chronic heart failure (CHF) is a major public health problem in huge population worldwide. The detailed understanding of CHF mechanism is still limited. Zheng (syndrome) is the criterion of diagnosis and therapeutic in Traditional Chinese Medicine (TCM). Syndrome prediction may be a better approach for understanding of CHF mechanism basis and its treatment. The authors studied disturbed metabolic biomarkers to construct a predicting mode to assess the diagnostic value of different syndrome of CHF and explore the Chinese herbal medicine (CHM) efficacy on CHF patients...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29209134/metabolically-based-liver-damage-pathophysiology-in-patients-with-urea-cycle-disorders-a-new-hypothesis
#5
Ivan Ivanovski, Miloš Ješić, Ana Ivanovski, Livia Garavelli, Petar Ivanovski
The underlying pathophysiology of liver dysfunction in urea cycle disorders (UCDs) is still largely elusive. There is some evidence that the accumulation of urea cycle (UC) intermediates are toxic for hepatocyte mitochondria. It is possible that liver injury is directly caused by the toxicity of ammonia. The rarity of UCDs, the lack of checking of iron level in these patients, superficial knowledge of UC and an underestimation of the metabolic role of fumaric acid, are the main reasons that are responsible for the incomprehension of the mechanism of liver injury in patients suffering from UCDs...
November 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29204574/variables-associated-with-olfactory-disorders-in-adults-a-u-s-population-based-analysis
#6
Julia Noel, Al-Rahim R Habib, Andrew Thamboo, Zara M Patel
Objective: Olfactory dysfunction is known to have significant social, psychological, and safety implications. Despite increasingly recognized prevalence, potential risk factors for olfactory loss have been arbitrarily documented and knowledge is limited in scale. The aim of this study is to identify potential demographic and exposure variables correlating with olfactory dysfunction. Methods: Cross-sectional analysis of the 2011-2012 and 2013-2014 editions of the National Health Examination and Nutrition Survey was performed...
March 2017: World Journal of Otorhinolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/29189935/the-physiology-of-the-tambaqui-colossoma-macropomum-at-ph-8-0
#7
Chris M Wood, R J Gonzalez, Márcio Soares Ferreira, Susana Braz-Mota, Adalberto Luis Val
The Tambaqui is a model neotropical teleost which is of great economic and cultural importance in artisanal fisheries and commercial aquaculture. It thrives in ion-poor, often acidic Amazonian waters and exhibits excellent regulation of physiology down to water pH 4.0. Curiously, however, it is reported to perform poorly in aquaculture at pH 8.0, an only slightly alkaline pH which would be benign for most freshwater fish. In initial experiments with Tambaqui of intermediate size (30-50 g), we found that ammonia excretion rate was unchanged at pH 4, 5, 6, and 7, but elevated after 20-24 h at pH 8, exactly opposite the pattern seen in most teleosts...
November 30, 2017: Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology
https://www.readbyqxmd.com/read/29185486/metabolomics-profiling-reveals-different-patterns-in-an-animal-model-of-asphyxial-and-dysrhythmic-cardiac-arrest
#8
Dimitrios Varvarousis, Theodoros Xanthos, Giulio Ferino, Antonio Noto, Nicoletta Iacovidou, Massimo Mura, Paola Scano, Athanasios Chalkias, Apostolos Papalois, Fabio De-Giorgio, Alfonso Baldi, Paolo Mura, Chryssoula Staikou, Matteo Stocchero, Gabriele Finco, Ernesto d'Aloja, Emanuela Locci
Cardiac arrest (CA) is not a uniform condition and its pathophysiology strongly depends on its cause. In this work we have used a metabolomics approach to study the dynamic metabolic changes occurring in the plasma samples of a swine model following two different causes of CA, namely asphyxia (ACA) and ventricular fibrillation (VFCA). Plasma samples were collected at baseline and every minute during the experimental phases. In order to identify the metabolomics profiles characterizing the two pathological entities, all samples were analysed by 1H NMR spectroscopy and LC-MS/MS spectrometry...
November 29, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29176025/a-newborn-with-combined-pituitary-hormone-deficiency-developing-shock-and-sludge
#9
Yasuhiro Ueda, Hayato Aoyagi, Toshihiro Tajima
A male neonate was born at 41 weeks of gestation with a birth weight of 3320 g. Artificial respiratory management was required due to respiratory disturbance 1 h after birth, and subsequently catecholamine-refractory low cardiac output-induced shock occurred. Severe combined pituitary hormone deficiency (CPHD) was considered based on the presence of his respiratory disturbance, hypoglycemia and micropenis. After hydrocortisone (HDC) administration, circulatory dynamics rapidly improved. Brain magnetic resonance imaging (MRI) showed aplasia of the anterior pituitary gland and ectopic posterior gland...
November 25, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/29175743/metabolomics-and-transcriptomics-reveal-the-toxicity-of-difenoconazole-to-the-early-life-stages-of-zebrafish-danio-rerio
#10
Miaomiao Teng, Wentao Zhu, Dezhen Wang, Suzhen Qi, Yao Wang, Jin Yan, Kai Dong, Mingqi Zheng, Chengju Wang
Difenoconazole is widely used to inhibit the growth of fungi, but its residue in the water environment may threaten ecosystem and human health. Here, 1H nuclear magnetic resonance (NMR) and LC-MS/MS based metabolomics and transcriptomics approaches were used to assess the response of zebrafish to difenoconazole exposure. Early life stages of zebrafish were exposed to difenoconazole at environmentally relevant concentrations for 168h. Their comparison with the control group suggested an adverse development and disturbance of steroid hormones and VTG...
November 21, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/29175141/large-neutral-amino-acid-supplementation-as-an-alternative-to-the-phenylalanine-restricted-diet-in-adults-with-phenylketonuria-evidence-from-adult-pah-enu2-mice
#11
Danique van Vliet, Els van der Goot, Vibeke M Bruinenberg, Martijn van Faassen, Pim de Blaauw, Ido P Kema, M Rebecca Heiner-Fokkema, Eddy A van der Zee, Francjan J van Spronsen
Phenylketonuria treatment mainly consists of a phenylalanine-restricted diet but still results in suboptimal neuropsychological outcome, which is at least partly based on cerebral monoamine deficiencies, while, after childhood, treatment compliance decreases. Supplementation of large neutral amino acids (LNAAs) was previously demonstrated in young phenylketonuria mice to target all three biochemical disturbances underlying brain dysfunction in phenylketonuria. However, both its potential in adult phenylketonuria and the comparison with the phenylalanine-restricted diet remain to be established...
October 12, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29173487/serum-and-whole-blood-zn-cu-and-mn-profiles-and-their-relation-to-redox-status-in-lung-cancer-patients
#12
Katarzyna Zabłocka-Słowińska, Sylwia Płaczkowska, Anna Prescha, Konrad Pawełczyk, Irena Porębska, Monika Kosacka, Lilla Pawlik-Sobecka, Halina Grajeta
Disturbed redox status may be critical to lung cancerogenesis, however little research has been conducted on general changes in total redox status in lung cancer. Levels and activities of antioxidants, especially enzymatic ones, are related to trace element concentration. Trace element status is often disturbed in cancers, however no studies concerning the association between redox and trace element status have been performed for lung cancer. We hypothesized that disturbed redox status in lung cancer patients is partially determined by trace elements while their distribution amongst blood compartments may differ compared to healthy subjects...
January 2018: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/29169400/hypermethylation-and-loss-of-retinoic-acid-receptor-responder-1-expression-in-human-choriocarcinoma
#13
H Huebner, R Strick, D L Wachter, S Kehl, P L Strissel, R Schneider-Stock, A Hartner, W Rascher, L C Horn, M W Beckmann, M Ruebner, F B Fahlbusch
BACKGROUND: Human placental development resembles tumorigenesis, due to the invasive and fusogenic potential of trophoblasts. However, these features are tightly controlled in trophoblasts. Disturbance of this spatial and temporal regulation is thought to contribute to the rare formation of choriocarcinomas. Promoter hypermethylation and loss of the tumor suppressor Retinoic acid receptor responder 1 (RARRES1) were shown to contribute to cancer progression. Our study investigated the epigenetic and transcriptional regulation of RARRES1 in healthy human placenta in comparison to choriocarcinoma cell lines and cases...
November 23, 2017: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/29158634/aluminum-exclusion-from-root-zone-and-maintenance-of-nutrient-uptake-are-principal-mechanisms-of-al-tolerance-in-pisum-sativum-l
#14
Natalia E Kichigina, Jan V Puhalsky, Aleksander I Shaposhnikov, Tatiana S Azarova, Natalia M Makarova, Svyatoslav I Loskutov, Vera I Safronova, Igor A Tikhonovich, Margarita A Vishnyakova, Elena V Semenova, Irina A Kosareva, Andrey A Belimov
Our study aimed to evaluate intraspecific variability of pea (Pisum sativum L.) in Al tolerance and to reveal mechanisms underlying genotypic differences in this trait. At the first stage, 106 pea genotypes were screened for Al tolerance using root re-elongation assay based on staining with eriochrome cyanine R. The root re-elongation zone varied from 0.5 mm to 14 mm and relationships between Al tolerance and provenance or phenotypic traits of genotypes were found. Tolerance index (TI), calculated as a biomass ratio of Al-treated and non-treated contrasting genotypes grown in hydroponics for 10 days, varied from 30% to 92% for roots and from 38% to 90% for shoots...
October 2017: Physiology and Molecular Biology of Plants: An International Journal of Functional Plant Biology
https://www.readbyqxmd.com/read/29151020/complications-of-regional-citrate-anticoagulation-accumulation-or-overload
#15
Antoine G Schneider, Didier Journois, Thomas Rimmelé
Regional citrate anticoagulation (RCA) is now recommended over systemic heparin for continuous renal replacement therapy in patients without contraindications. Its use is likely to increase throughout the world. However, in the absence of citrate blood level monitoring, the diagnosis of citrate accumulation, the most feared complication of RCA, remains relatively complex. It is therefore commonly mistaken with other conditions. This review aims at providing clarifications on RCA-associated acid-base disturbances and their management at the bedside...
November 19, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/29146975/disturbance-in-plasma-metabolic-profile-in-different-types-of-human-cytomegalovirus-induced-liver-injury-in-infants
#16
Wei-Wei Li, Jin-Jun Shan, Li-Li Lin, Tong Xie, Li-Li He, Yan Yang, Shou-Chuan Wang
Human cytomegalovirus (HCMV) infection in infants is a global problem and the liver is a target organ of HCMV invasion. However, the mechanism by which HCMV causes different types of liver injury is unclear, and there are many difficulties in the differential diagnosis of HCMV infantile cholestatic hepatopathy (ICH) and extrahepatic biliary atresia (EHBA). We established a non-targeted gas chromatography-mass spectrometry metabolomics method in conjunction with orthogonal partial least squares-discriminate analysis based on 127 plasma samples from healthy controls, and patients with HCMV infantile hepatitis, HCMV ICH, and HCMV EHBA to explore the metabolite profile of different types of HCMV-induced liver injury...
November 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29142170/characterization-of-a-rat-model-of-moderate-liver-dysfunction-based-on-alpha-naphthylisothiocyanate-induced-cholestasis
#17
Melanie K Bothe, Christoph Meyer, Udo Mueller, Jean-Christophe Queudot, Virginie Roger, Johannes Harleman, Martin Westphal
Plasma amino acid level changes occur in mild, moderate and severe stages of liver injury in human patients. In animal models, however, data are mainly restricted to severe liver injury models in rats. Here we present the characterization of a rat model of moderate liver dysfunction secondary to alpha-napthylisothiocyanate (ANIT)-induced cholestasis. Rats treated with 30 mg/kg/day ANIT for 3 weeks exhibited a time-dependent increase in plasma alanine aminotransferase (ALT), aspartate aminotransferase (AST) and bilirubin levels and a decrease in albumin concentration...
2017: Journal of Toxicological Sciences
https://www.readbyqxmd.com/read/29138116/in-silico-identification-of-genes-involved-in-chronic-metabolic-acidosis
#18
Ishfaq A Sheikh, Adeel Malik, Sameera F M AlBasri, Mohd A Beg
AIMS: Chronic metabolic acidosis (CMA) refers to increased plasma acidity due to disturbed acid-base equilibrium in human body. CMA leads to many dysfunctions including disorders of intestinal metabolism and barrier functions. The human body responds to these intestinal dysfunctions by creating a compensatory mechanism at genomic level in intestinal epithelial cells. This study was to identify the molecular pathways involved in metabolic dysfunction and compensatory adaptations in intestinal epithelium during CMA...
November 11, 2017: Life Sciences
https://www.readbyqxmd.com/read/29137890/exposure-to-the-fungicide-propamocarb-causes-gut-microbiota-dysbiosis-and-metabolic-disorder-in-mice
#19
Sisheng Wu, Cuiyuan Jin, Yueyi Wang, Zhengwei Fu, Yuanxiang Jin
Propamocarb (PM) is a widely used fungicide with property of affecting fatty acid and phospholipid biosynthesis in funguses. In this study, we explored its effects on mice gut microbiota and metabolism by exposing mice to 3, 30, and 300 mg/L PM through drinking water for a duration of 28 days. We observed that the transcription of hepatic genes related to regulate lipid metabolism were perturbed by PM exposure. The microbiota in the cecal contents and feces changed during or after PM exposure at phylum or genus levels...
November 11, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29132247/management-of-a-rare-case-with-severe-hydrofluoric-acid-burns-important-roles-of-neutralizers-and-continuous-renal-replacement-therapy
#20
Yuanhai Zhang, Xingang Wang, Yuezhen Liu, Xinhua Jiang, Chunjiang Ye, Liangfang Ni, Liping Zhang, Jianfen Zhang, Bin Xu, Chunmao Han
Hydrofluoric acid (HF), a dangerous inorganic acid, is widely used in various industries and in daily life. Chemical burns caused by HF exposure occur more frequently in some regions worldwide. It has been reported that some cases with HF burns can be lethal due to the hypertoxicity of HF. In this article, we present a case of a 24-year-old worker who suffered HF burns by 53% HF solution to his face, neck, and nasal cavity. This patient quickly developed electrolyte disturbance, that is, hypocalcemia, and hypopotassemia, and myocardial injury after exposure...
November 1, 2017: International Journal of Lower Extremity Wounds
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