keyword
MENU ▼
Read by QxMD icon Read
search

Hyperammonemia

keyword
https://www.readbyqxmd.com/read/28811686/influence-of-the-flavonoid-quercetin-on-antioxidant-status-lipid-peroxidation-and-histopathological-changes-in-hyperammonemic-rats
#1
Sivamani Kanimozhi, Pakkiri Bhavani, Perumal Subramanian
We have studied the ability of quercetin (a bioflavonoid) in tackling oxidative stress to alleviate the symptoms during ammonium chloride-induced hyperammonemia. Hyperammonemia was induced by the treatment of ammonium chloride (AC) 100 mg/kg b.w for 56 days. Hyperammonemic rats exhibited reduced urea (in plasma) and increased ammonia (in blood), uric acid (in plasma), creatinine (in serum), oxidative stress markers (thiobarbituric acid reactive substances (TBARS) and hydroperoxides (HP) and decreased levels of antioxidants (enzymatic and non-enzymatic) superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), reduced glutathione (GSH) in plasma and tissues (liver and brain) vitamins E and C (in plasma))...
July 2017: Indian Journal of Clinical Biochemistry: IJCB
https://www.readbyqxmd.com/read/28801579/tnf%C3%AE-induced-up-regulation-of-na-k-2cl-cotransporter-nkcc1-in-hepatic-ammonia-clearance-and-cerebral-ammonia-toxicity
#2
Vitaly I Pozdeev, Elisabeth Lang, Boris Görg, Hans J Bidmon, Prashant V Shinde, Gerald Kircheis, Diran Herebian, Klaus Pfeffer, Florian Lang, Dieter Häussinger, Karl S Lang, Philipp A Lang
The devastating consequences of hepatic failure include hepatic encephalopathy, a severe, life threatening impairment of neuronal function. Hepatic encephalopathy is caused by impaired hepatic clearance of NH4(+). Cellular NH4(+) uptake is accomplished mainly by the Na(+),K(+),2Cl(-) cotransporter. Here we show that hepatic clearance of NH4(+) is impaired in TNFα deficient as well as TNFR1&TNFR2 double knockout mice, which both develop hyperammonemia. Despite impaired hepatic clearance of NH4(+), TNFα deficient mice and TNFR1 deficient mice were protected against acute ammonia intoxication...
August 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28782476/a-case-of-capecitabine-induced-hyperammonemia-in-a-patient-with-colon-cancer
#3
Wentong Fang, Yuanyuan Fu, Ji-Fu Wei
BACKGROUND: Hyperammonemia is an infrequent adverse drug reaction (ADR) of chemotherapy. A few cases of 5-fluorouracil (5-FU) related hyperammonemia have been reported. OBJECTIVE: However, hyperammonemia induced by capecitabine, an oral prodrug of 5-FU, has not been reported till date. A patient with colon cancer was treated with CapeOx(oxaliplatin 200mg, day 1; capecitabine 1.5g bid, days 1-14). On the fifth day of first cycle chemotherapy, she developed hyperammonemia(240 μmol/L) and psychiatric symptoms...
August 7, 2017: Current Drug Safety
https://www.readbyqxmd.com/read/28751644/minimal-hepatic-encephalopathy-is-associated-with-expansion-and-activation-of-cd-4-cd28-th22-and-tfh-and-b-lymphocytes
#4
Alba Mangas-Losada, Raquel García-García, Amparo Urios, Desamparados Escudero-García, Joan Tosca, Remedios Giner-Durán, Miguel Angel Serra, Carmina Montoliu, Vicente Felipo
Peripheral inflammation acts synergistically with hyperammonemia in inducing neurological alterations in cirrhotic patients with minimal hepatic encephalopathy (MHE). We hypothesized that appearance of MHE would be associated to some specific qualitative change in peripheral inflammation. The aim of this work was to characterize the changes in peripheral inflammation associated to appearance of MHE. We analyzed it by immunophenotyping and cytokine profile analysis, in cirrhotic patients without or with MHE and controls...
July 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28751323/a-case-of-severe-neonatal-hyperammonemia
#5
Roy W A Peake, Edward G Neilan
No abstract text is available yet for this article.
August 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28750687/extracellular-vesicles-from-human-liver-stem-cells-restore-argininosuccinate-synthase-deficiency
#6
Maria Beatriz Herrera Sanchez, Sara Previdi, Stefania Bruno, Valentina Fonsato, Maria Chiara Deregibus, Sharad Kholia, Sara Petrillo, Emanuela Tolosano, Rossana Critelli, Marco Spada, Renato Romagnoli, Mauro Salizzoni, Ciro Tetta, Giovanni Camussi
BACKGROUND: Argininosuccinate synthase (ASS)1 is a urea cycle enzyme that catalyzes the conversion of citrulline and aspartate to argininosuccinate. Mutations in the ASS1 gene cause citrullinemia type I, a rare autosomal recessive disorder characterized by neonatal hyperammonemia, elevated citrulline levels, and early neonatal death. Treatment for this disease is currently restricted to liver transplantation; however, due to limited organ availability, substitute therapies are required...
July 27, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28745680/-the-decreased-level-of-plasma-carnitine-in-patients-with-epilepsy
#7
E D Belousova
Antiepileptic drugs (AEDs) have long been known to affect carnitine metabolism, dropping the plasma free carnitine. Valproate (VPA) was considered to be the strongest carnitine-reducing agent. VPA-induced hyperammonemic encephalopathy and hepatotoxicity are well known, and pre-existing carnitine deficiency can be a predisposing factor, especially in congenital metabolic disorders. Several studies have shown that carnitine supplementation in patients receiving VPA to result in subjective and objective improvements and to prevent VPA-induced hepatotoxicity and encephalopathy, in parallel with increases in carnitine serum concentrations...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/28741381/the-relationship-between-serum-ammonia-level-and-neurologic-complications-in-patients-with-acute-glufosinate-ammonium-poisoning-a-prospective-observational-study
#8
Y S Cha, H Kim, Y Lee, E H Choi, H I Kim, O H Kim, K-C Cha, K H Lee, S O Hwang
Glufosinate ammonium poisoning can cause neurological complications even after a symptom-free period. We prospectively investigated the predictors of neurologic complications in acute glufosinate ammonium poisoning and the change of serum ammonia level as a predictor of patient's presence and recovery of neurologic complication. This prospective observational study collected data from consecutive patients diagnosed with acute glufosinate ammonium poisoning between September 2014 and June 2016. Serum ammonia was serially measured...
January 1, 2017: Human & Experimental Toxicology
https://www.readbyqxmd.com/read/28728499/acute-central-nervous-system-complications-and-ammonium-levels-in-adult-patients-with-acute-lymphoblastic-leukemia-receiving-l-asparaginase
#9
Nicole Strickler, Stefan Balabanov, Katharina Casauro, Urs Schanz, Markus G Manz, Bernhard Gerber
We analyzed ammonium levels and acute central nervous complications in adult patients receiving chemotherapy for acute lymphoblastic leukemia with or without asparaginase (l-asp). Twenty patients with a median age of 40.3 years were included. Ammonium-levels were measured during 88 chemotherapy cycles, 60 cycles (68%) with l-asp, and 28 cycles (32%) without l-asp. Ammonium was elevated in 87% of all l-asp containing cycles, with median ammonium levels of 169 μmol/l (interquartile range (IQR) 91-269 μmol/l)...
July 21, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/28725569/psychiatric-adult-onset-of-urea-cycle-disorders-a-case-series
#10
Adrien Bigot, Paul Brunault, Christian Lavigne, François Feillet, Sylvie Odent, Elsa Kaphan, Christel Thauvin, Vanessa Leguy, Pierre Broué, Michel C Tchan, François Maillot
Adult onset urea cycle disorders (UCD) may present with psychiatric symptoms, occasionally as the initial presentation. We aimed to describe the characteristics of patients presenting with a psychiatric adult-onset of UCDs, to discuss which signs could suggest this diagnosis in such a situation, and to determine which tests should be conducted. A survey of psychiatric symptoms occurring in teenagers or adults with UCD was conducted in 2010 among clinicians involved in the French society for the study of inborn errors of metabolism (SFEIM)...
September 2017: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/28698583/ammonium-chloride-alters-neuronal-excitability-and-synaptic-vesicle-release
#11
Roman M Lazarenko, Claire E DelBove, Claire E Strothman, Qi Zhang
Genetically encoded pH-sensors are widely used in studying cell membrane trafficking and membrane protein turnover because they render exo-/endocytosis-associated pH changes to fluorescent signals. For imaging and analysis purposes, high concentration ammonium chloride is routinely used to alkalize intracellular membrane compartments under the assumption that it does not cause long-term effects on cellular processes being studied like neurotransmission. However, pathological studies about hyperammonemia have shown that ammonium is toxic to brain cells especially astrocytes and neurons...
July 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28690671/association-between-the-blood-concentrations-of-ammonia-and-carnitine-amino-acid-of-schizophrenic-patients-treated-with-valproic-acid
#12
Masazumi Ando, Hideaki Amayasu, Takahiro Itai, Hisahiro Yoshida
BACKGROUND: Administration of valproic acid (VPA) is complicated with approximately 0.9% of patients developing hyperammonemia, but the pathogenesis of this adverse effect remains to be clarified. The aim of the present study was to search for mechanisms associated with VPA-induced hyperammonemia in the light of changes in serum amino acids concentrations associated with the urea cycle of schizophrenic patients. METHOD: Blood samples (10 mL) were obtained from 37 schizophrenic patients receiving VPA for the prevention of violent behaviors in the morning after overnight fast...
2017: BioPsychoSocial Medicine
https://www.readbyqxmd.com/read/28677045/evaluation-of-an-advanced-organ-support-advos-system-in-a-two-hit-porcine-model-of-liver-failure-plus-endotoxemia
#13
Ahmed Al-Chalabi, Edouard Matevossian, Anne von Thaden, Catherine Schreiber, Peter Radermacher, Wolfgang Huber, Aritz Perez Ruiz de Garibay, Bernhard Kreymann
BACKGROUND: Novel extracorporeal procedures are constantly being developed and evaluated for use in patients with sepsis. Preclinical evaluation of such procedures usually requires testing in large animal models. In the present work, the safety and efficacy of a recently developed ADVanced Organ Support (ADVOS) system in a newly developed large animal two-hit model of liver failure combined with endotoxemia were tested. METHODS: After establishing the model in more than 50 animals, a randomized study was performed...
December 2017: Intensive Care Medicine Experimental
https://www.readbyqxmd.com/read/28666653/the-liver-is-a-metabolic-and-immunologic-organ-a-reconsideration-of-metabolic-decompensation-due-to-infection-in-inborn-errors-of-metabolism-iem
#14
REVIEW
Tatyana N Tarasenko, Peter J McGuire
Metabolic decompensation in inborn errors of metabolism (IEM) is characterized by a rapid deterioration in metabolic status leading to life-threatening biochemical perturbations (e.g. hypoglycemia, hyperammonemia, acidosis, organ failure). Infection is the major cause of metabolic decompensation in patients with IEM. We hypothesized that activation of the immune system during infection leads to further perturbations in end-organ metabolism resulting in increased morbidity. To address this, we established model systems of metabolic decompensation due to infection...
August 2017: Molecular Genetics and Metabolism
https://www.readbyqxmd.com/read/28658158/neonatal-onset-carbamoyl-phosphate-synthetase-i-deficiency-a-case-report
#15
Xiaoyan Yang, Jing Shi, Haihong Lei, Bin Xia, Dezhi Mu
RATIONALE: The carbamoyl phosphate synthetase I deficiency (CPS1D) was rare and hard to diagnose due to its atypical symptoms. Brain magnetic resonance imaging (MRI) was typically unavailable in other reports because most patients died before diagnosis was confirmed. Furthermore, it was found a new mutation that had not been described previously. PATIENT CONCERNS: This is a case of neonatal-onset CPS1D with nonspecific clinical manifestations and deteriorating rapidly...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28634175/interrelations-between-3-hydroxypropionate-and-propionate-metabolism-in-rat-liver-relevance-to-disorders-of-propionyl-coa-metabolism
#16
Kirkland A Wilson, Yong Han, Miaoqi Zhang, Jeremy Hess, Kimberly A Chapman, Gary W Cline, Gregory P Tochtrop, Henri Brunengraber, Guo-Fang Zhang
Propionate, 3-hydroxypropionate (3HP), methylcitrate, related compounds and ammonium accumulate in body fluids of patients with disorders of propionyl-CoA metabolism, such as propionic acidemia. Although liver transplantation alleviates hyperammonemia, high concentrations of propionate, 3HP and methylcitrate persist in body fluids. We hypothesized that conserved metabolic perturbations occurring in transplanted patients result from the simultaneous presence of propionate and 3HP in body fluids. We investigated the interrelations of propionate and 3HP metabolism in perfused livers from normal rats using metabolomic and stable isotopic technologies...
June 20, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28627027/elevated-serum-myostatin-level-is-associated-with-worse-survival-in-patients-with-liver-cirrhosis
#17
Hiroki Nishikawa, Hirayuki Enomoto, Akio Ishii, Yoshinori Iwata, Yuho Miyamoto, Noriko Ishii, Yukihisa Yuri, Kunihiro Hasegawa, Chikage Nakano, Takashi Nishimura, Kazunori Yoh, Nobuhiro Aizawa, Yoshiyuki Sakai, Naoto Ikeda, Tomoyuki Takashima, Ryo Takata, Hiroko Iijima, Shuhei Nishiguchi
BACKGROUND: We aimed to elucidate the relationship between serum myostatin levels and other markers including skeletal muscle mass and to investigate the influence of serum myostatin levels on survival for patients with liver cirrhosis (LC). METHODS: A total of 198 LC subjects were analysed in this study. Myostatin levels were measured using stored sera. We retrospectively investigated the relationship between myostatin level and other markers, and the influence of myostatin level on overall survival (OS)...
June 18, 2017: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/28605806/hyperammonemia-after-blood-transfusion
#18
Zachary M Rossfeld, Nathan R Wright
No abstract text is available yet for this article.
July 18, 2017: Annals of Internal Medicine
https://www.readbyqxmd.com/read/28597413/late-onset-ornithine-transcarbamylase-deficiency-associated-with-hyperammonemia
#19
Kana Daijo, Tomokazu Kawaoka, Takashi Nakahara, Yuko Nagaoki, Masataka Tsuge, Akira Hiramatsu, Michio Imamura, Yoshiiku Kawakami, Hiroshi Aikata, Keiichi Hara, Go Tajima, Masao Kobayashi, Kazuaki Chayama
The urea cycle converts ammonia and produces urea. One form of urea cycle abnormality is ornithine transcarbamylase (OTC) deficiency. This hereditary disorder is associated with hyperammonemia. OTC deficiency commonly appears during neonatal and early childhood life and is rare in adults. We report a 69-year-old man who presented at the local hospital with 3-day loss of appetite, early morning vomiting, and state of confusion. Blood ammonia was 293 μg/dl. At 2-3 h after admission, the patient went into a deep coma...
August 2017: Clinical Journal of Gastroenterology
https://www.readbyqxmd.com/read/28592010/-clinical-diagnosis-and-treatment-of-three-cases-with-hyperornithinemia-hyperammonemia-homocitrullinuria-syndrome
#20
H Z Guan, Y Ding, D X Li, H Dong, J Q Song, Y Jin, Z J Zhu, L Y Sun, Y L Yang
Objective: To study the clinical characteristics, methods of diagnosis and treatment of hyperornithinemia-hyperammonemia- homocitrullinuria (HHH) syndrome. Method: From July 2011 to August 2016, 3 Chinese patients with HHH syndrome were enrolled in this study. The clinical course, biochemical features, brain MRI findings, and gene mutations were analyzed. Result: The three patients' age at onset of symptoms was 3 months to 7 years, and the age of diagonosis was 3 years and 10 months to 9 years and 10 months...
June 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
keyword
keyword
2581
1
2
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"