13 results on '"Papadimitriou D"'
Search Results
2. Changes of trans and saturated fatty acid content in savory baked goods from 2015 to 2021 and their effect on consumers' intake using substitution models: A study conducted in Greece.
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Marakis G, Kotopoulou S, Proestos C, Skoulika S, Boukouvalas G, Papaioannou A, Mousia Z, Papadimitriou D, Katri EM, Naska A, Chourdakis M, Zampelas A, and Magriplis E
- Subjects
- Humans, Greece, Dietary Fats, Energy Intake, Fatty Acids, Trans Fatty Acids
- Abstract
Background: In Greece, nearly a third of savory baked goods (SBGs) exceeded the limit of 2 g of nonruminant or industrial trans fatty acids (i-TFA) per 100 g fat in 2015. The impact of the Commission Regulation (European Union) 2019/649 on exposure to trans fatty acids (TFA), i-TFA, and saturated fatty acid (SFA) from SBGs has not been previously evaluated., Objectives: The study aimed to explore fatty acid reformulation of SBG products and assess differences in TFA, i-TFA, and SFA intakes using a sample of Greek SBG consumers from a nationally representative survey., Methods: In 2021, 140 samples of SBGs were collected in the greater metropolitan area of Athens, and their fat profile and content were compared to those from 2015. Based on these measurements, food consumption substitution models were employed to examine TFA and SFA intake differences, and the percent contribution from SBG among consumers was calculated (N = 1008). Nutrient densities were calculated by adjusting all fat intakes by individual mean energy intake (percentage of daily total energy intake)., Results: The 2% i-TFA legislative limit/100 g of fat in measured SBGs was exceeded by 11.4% in 2021 compared to 31.1% in 2015 (19.7% increase in compliance). Median i-TFA and TFA intakes from SBGs were reduced from 0.05 (0.01, 0.12)% and 0.13 (0.03, 0.27)% in 2015 to 0.03 (0.01, 0.09) and 0.06 (0.03, 0.13)% in 2021, respectively. In terms of SFA, a mean increase/100 g was calculated, resulting in an increased intake in 2021 compared to 2015 [5.18% (2.78, 8.37) and 3.55 (1.99, 5.73), respectively]., Conclusions: Despite the reductions seen in i-TFA content of SBGs, food product reformulation efforts in Greece should focus not only on TFA content but also on SFA reduction to improve public health., (Copyright © 2023 American Society for Nutrition. Published by Elsevier Inc. All rights reserved.)
- Published
- 2023
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3. Implications of elevated troponin on time-to-surgery in non-ST elevation myocardial infarction (NIHR Health Informatics Collaborative: TROP-CABG study).
- Author
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Benedetto U, Sinha S, Mulla A, Glampson B, Davies J, Panoulas V, Gautama S, Papadimitriou D, Woods K, Elliott P, Hemingway H, Williams B, Asselbergs FW, Melikian N, Krasopoulos G, Sayeed R, Wendler O, Baig K, Chukwuemeka A, Angelini GD, Sterne JAC, Johnson T, Shah AM, Perera D, Patel RS, Kharbanda R, Channon KM, Mayet J, and Kaura A
- Subjects
- Aged, Aged, 80 and over, Coronary Artery Bypass methods, Female, Humans, Male, Middle Aged, Treatment Outcome, Troponin, Medical Informatics, Myocardial Infarction diagnosis, Myocardial Infarction surgery, Non-ST Elevated Myocardial Infarction diagnosis, Non-ST Elevated Myocardial Infarction surgery
- Abstract
Implications of elevated troponin on time-to-surgery in non-ST elevation myocardial infarction(NIHR Health Informatics Collaborative:TROP-CABG study). Benedetto et al. BACKGROUND: The optimal timing of coronary artery bypass grafting (CABG) in patients with non-ST elevation myocardial infarction (NSTEMI) and the utility of pre-operative troponin levels in decision-making remains unclear. We investigated (a) the association between peak pre-operative troponin and survival post-CABG in a large cohort of NSTEMI patients and (b) the interaction between troponin and time-to-surgery. METHODS AND RESULTS: Our cohort consisted of 1746 patients (1684 NSTEMI; 62 unstable angina) (mean age 69 ± 11 years,21% female) with recorded troponins that had CABG at five United Kingdom centers between 2010 and 2017. Time-segmented Cox regression was used to investigate the interaction of peak troponin and time-to-surgery on early (within 30 days) and late (beyond 30 days) survival. Average interval from peak troponin to surgery was 9 ± 15 days, with 1466 (84.0%) patients having CABG during the same admission. Sixty patients died within 30-days and another 211 died after a mean follow-up of 4 ± 2 years (30-day survival 0.97 ± 0.004 and 5-year survival 0.83 ± 0.01). Peak troponin was a strong predictor of early survival (adjusted P = 0.002) with a significant interaction with time-to-surgery (P interaction = 0.007). For peak troponin levels <100 times the upper limit of normal, there was no improvement in early survival with longer time-to-surgery. However, in patients with higher troponins, early survival increased progressively with a longer time-to-surgery, till day 10. Peak troponin did not influence survival beyond 30 days (adjusted P = 0.64). CONCLUSIONS: Peak troponin in NSTEMI patients undergoing CABG was a significant predictor of early mortality, strongly influenced the time-to-surgery and may prove to be a clinically useful biomarker in the management of these patients., (Copyright © 2022 Elsevier B.V. All rights reserved.)
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- 2022
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4. Deciphering anti-MOG IgG antibodies: Clinical and radiological spectrum, and comparison of antibody detection assays.
- Author
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Tzartos JS, Karagiorgou K, Tzanetakos D, Breza M, Evangelopoulos ME, Pelidou SH, Bakirtzis C, Nikolaidis I, Koutsis G, Notas K, Chroni E, Markakis I, Grigoriadis NC, Anagnostouli M, Orologas A, Parisis D, Karapanayiotides T, Papadimitriou D, Kostadima V, Elloul J, Xidakis I, Maris T, Zisimopoulou P, Tzartos S, and Kilidireas C
- Subjects
- Autoantibodies, Humans, Immunoglobulin G, Myelin-Oligodendrocyte Glycoprotein, Neuromyelitis Optica diagnostic imaging, Optic Neuritis
- Abstract
IgG antibodies to myelin oligodendrocyte glycoprotein (MOG) detected by cell based assays (CBA) have been identified in a constantly expanding spectrum of CNS demyelinating disorders. However, a universally accepted CBA has not been adopted yet. We aimed to analyze the clinical and radiological features of patients with anti-MOG IgG1-antibodies detected with a live-cell CBA and to compare the three most popular MOG-CBAs. We screened sera from 1300 Greek patients (including 426 patients referred by our 8 clinics) suspected for anti-MOG syndrome, and 120 controls with the live-cell MOG-CBA for IgG1-antibodies. 41 patients, versus 0 controls were seropositive. Clinical, serological and radiological data were available and analyzed for the 21 seropositive patients out of the 426 patients of our clinics. Their phenotypes were: 8 optic neuritis, 3 myelitis, 3 neuromyelitis optica, 2 encephalomyelitis, 2 autoimmune encephalitis and 3 atypical MS. We then retested all sera of our 426 patients with the other two most popular MOG-CBAs for total IgG (a live-cell and a commercial fixed-cell CBAs). Seven IgG1-seropositive patients were seronegative for one or both IgG-CBAs. Yet, all 21 patients had clinical and radiological findings previously described in MOG-antibody associated demyelination disease supporting the high specificity of the IgG1-CBA. In addition, all IgG1-CBA-negative sera were also negative by the IgG-CBAs. Also, all controls were negative by all three assays, except one serum found positive by the live IgG-CBA. Overall, our findings support the wide spectrum of anti-MOG associated demyelinating disorders and the superiority of the MOG-IgG1 CBA over other MOG-CBAs., Competing Interests: Declaration of Competing Interest J.S.T. and S.T. have shares in the research and diagnostic laboratory Tzartos NeuroDiagnostics, Athens. G.K. reports grants from Teva Pharmaceuticals and Genesis Pharma; personal fees from Novartis, Genesis Pharma, Sanofi-Genzyme and Teva Pharmaceuticals; non-financial support from Merck, Sanofi-Genzyme and Genesis Pharma. M.E.E. has received travel grants and consulting fees from Biogen, Novartis, Teva, Genzyme and Merk. C.K. received research grants from Biogen, Novartis, Teva, and Merck-Serono. All other authors declare no relevant to this work conflicts of interest., (Copyright © 2020 Elsevier B.V. All rights reserved.)
- Published
- 2020
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5. A novel mutation in TREM2 gene causing Nasu-Hakola disease and review of the literature.
- Author
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Dardiotis E, Siokas V, Pantazi E, Dardioti M, Rikos D, Xiromerisiou G, Markou A, Papadimitriou D, Speletas M, and Hadjigeorgiou GM
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- Adaptor Proteins, Signal Transducing genetics, Adult, Exons genetics, Female, Heterozygote, Humans, Membrane Proteins genetics, Phenotype, Genetic Association Studies, Lipodystrophy genetics, Membrane Glycoproteins genetics, Mutation, Osteochondrodysplasias genetics, Receptors, Immunologic genetics, Subacute Sclerosing Panencephalitis genetics
- Abstract
Nasu-hakola disease (NHD) is a rare disease characterized by bone cysts and fractures, frontal lobe syndrome, and progressive presenile dementia. NHD may be the prototype of primary microglial disorders of the CNS or, as they have been coined, "microgliopathies". Mutations in TREM2 and TYROBP genes are known to cause NHD. Interestingly, recent evidence-associated rare genetic variants of TREM2 gene with increased risk of Alzheimer's disease, frontotemporal dementia, amyotrophic lateral sclerosis, and Parkinson's disease. Here, we report a 33-year-old Greek female with phenotype suggestive of NHD. Full gene sequencing of the TREM2 and TYROBP genes revealed a novel mutation in exon 2 of TREM2 gene, namely c.244G>T (p.W50C) and heterozygosity in the parents and her brother. This report extends the range of TREM2 mutations that cause NHD phenotype. In addition, we provide a comprehensive review of all reported in the literature TREM2 gene mutations and the respective wide spectrum of clinical manifestations that highlights the importance of considering TREM2 gene mutations in a variety of neurodegenerative phenotypes., (Copyright © 2017 Elsevier Inc. All rights reserved.)
- Published
- 2017
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6. Simultaneous transcervical angioplasty and stenting of innominate and right internal carotid arteries.
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Christopoulos DC, Kardamis C, Pitoulias GA, and Papadimitriou D
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- Angiography, Digital Subtraction, Arterial Occlusive Diseases diagnosis, Carotid Stenosis diagnosis, Constriction, Pathologic, Female, Humans, Middle Aged, Severity of Illness Index, Time Factors, Treatment Outcome, Angioplasty, Balloon instrumentation, Arterial Occlusive Diseases therapy, Brachiocephalic Trunk diagnostic imaging, Carotid Artery, Internal diagnostic imaging, Carotid Stenosis therapy, Stents
- Abstract
Severe stenosis of both the internal carotid and the innominate arteries is a rare condition. Hybrid procedures combining carotid endarterectomy and retrograde endovascular innominate angioplasty have been introduced to reduce the complications of open surgery. The recently reported good results of carotid angioplasty and stenting have encouraged us to perform simultaneous transcervical angioplasties and stenting of both arteries in a symptomatic 64-year-old woman. The procedure was successful and without complications and there have been no symptoms or restenosis in the 18-month follow-up period. Carrying out additional procedures of this will be necessary to reach wider conclusions., (Copyright © 2014 Elsevier Inc. All rights reserved.)
- Published
- 2014
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7. Nitroglycerin and epinephrine improve coronary perfusion pressure in a porcine model of ventricular fibrillation arrest: a pilot study.
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Kitsou V, Xanthos T, Stroumpoulis K, Rokas G, Papadimitriou D, Serpetinis I, Dontas I, Perrea D, and Kouskouni E
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- Animals, Cardiopulmonary Resuscitation, Drug Therapy, Combination, Female, Heart Arrest complications, Injections, Intravenous, Male, Sus scrofa, Ventricular Fibrillation complications, Epinephrine administration & dosage, Heart Arrest drug therapy, Myocardial Reperfusion methods, Nitroglycerin administration & dosage, Sympathomimetics administration & dosage, Vasodilator Agents administration & dosage, Ventricular Fibrillation drug therapy
- Abstract
Background: Cardiac arrest remains one of the leading causes of death worldwide. European Resuscitation Council Guidelines for Resuscitation 2005 recommend epinephrine for its treatment., Objectives: To estimate whether the administration of a vasodilatator such as nitroglycerin in combination with epinephrine during cardiopulmonary resuscitation would improve resuscitation outcome in an established model of ventricular fibrillation., Design: Prospective, randomized, blinded, controlled study., Setting: Animal research laboratory. Ventricular fibrillation was induced in 20 Landrace/Large-White pigs. It remained untreated for 8 min before attempting resuscitation precordial compressions, mechanical ventilation, and electrical defibrillation. Animals were randomized into two groups, 10 animals each. Group A received saline as placebo (10 mL dilution, bolus) and epinephrine (0.02 mg/kg). Group B received nitroglycerin (50 microg/kg) and epinephrine (0.02 mg/kg) during cardiopulmonary resuscitation. Electrical defibrillation was attempted after 10 min of ventricular fibrillation., Results: Four animals in group A restored spontaneous circulation in comparison to eight in Group B. Coronary perfusion pressure (p < 0.0001) was significantly increased in Group B during cardiopulmonary resuscitation., Conclusion: A vasodilatator, when administered in combination with a vasopressor such as epinephrine during cardiopulmonary resuscitation, increases coronary perfusion pressure.
- Published
- 2009
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8. Amyotrophic lateral sclerosis linked to a novel SOD1 mutation with muscle mitochondrial dysfunction.
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Corti S, Donadoni C, Ronchi D, Bordoni A, Fortunato F, Santoro D, Del Bo R, Lucchini V, Crugnola V, Papadimitriou D, Salani S, Moggio M, Bresolin N, and Comi GP
- Subjects
- Adult, Arginine genetics, Cytochromes c metabolism, DNA Mutational Analysis, Family Health, Genetic Linkage physiology, Glutamic Acid genetics, Humans, Male, Mitochondria, Muscle ultrastructure, Superoxide Dismutase-1, Amyotrophic Lateral Sclerosis complications, Amyotrophic Lateral Sclerosis genetics, Amyotrophic Lateral Sclerosis pathology, Genetic Predisposition to Disease, Mitochondria, Muscle pathology, Mitochondrial Diseases etiology, Mutation genetics, Superoxide Dismutase genetics
- Abstract
Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative motor neuron disorder. Mutations in Cu,Zn superoxide dismutase (SOD1) cause approximately 20% of familial ALS. One of the possible mechanisms whereby they induce disease is mitochondrial dysfunction in motor neurons. Here we describe a patient with ALS and muscle mitochondrial oxidative defect associated with a novel SOD1 mutation. Direct sequencing of SOD1 gene revealed a heterozygous mutation in codon 22 substituting a highly conserved amino acid, from glutamine to arginine (Q22R). Muscle biopsy showed a neurogenic pattern associated with cytochrome c oxidase (COX) deficiency in several muscle fibers. Western blot analysis demonstrated a reduction in SOD1 content in the cytoplasmic and mitochondrial fractions. These results suggest that a minute quantity of mutant SOD1 protein contributes to a mitochondrial toxicity also in muscle tissue.
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- 2009
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9. Mid-term comparison of bifurcated modular endograft versus aorto-uni-iliac endograft in patients with abdominal aortic aneurysm.
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Dalainas I, Moros I, Gerasimidis T, Papadimitriou D, Saratzis N, Gitas CG, Kiskinis D, and Lazaridis J
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- Aged, Aortic Aneurysm, Abdominal mortality, Blood Vessel Prosthesis Implantation adverse effects, Blood Vessel Prosthesis Implantation instrumentation, Female, Femoral Artery surgery, Follow-Up Studies, Greece, Humans, Iliac Aneurysm mortality, Male, Middle Aged, Prospective Studies, Prosthesis Design, Reoperation, Stents, Survival Analysis, Time Factors, Treatment Outcome, Aortic Aneurysm, Abdominal surgery, Blood Vessel Prosthesis Implantation methods, Iliac Aneurysm surgery
- Abstract
The aim of this prospective study was to compare the outcome of the Talent bifurcated endograft versus the Endofit aorto-uni-iliac endograft in the short-term and mid-term. Between March 2000 and December 2003, 86 patients were treated with the Talent bifurcated endograft (group A) and 21 with the Endofit aorto-uni-iliac endograft (group B) in the same institute by the same surgical team. All patients followed a prospective protocol of preoperative evaluation and postoperative follow-up. We compared groups A and B in terms of perioperative mortality and morbidity, mid-term endoleak rate, mid-term success rate, and mid-term survival. The perioperative mortality for group A was 1.63%, while that for group B was 0% (P = 0.62). The endoleak rate for group A was 4.65%, and that for group B was 14.29% (P = 0.135). The mid-term success rate was 96.5% for group A and 100% for group B (P = 0.386). There was no significant difference in outcome between the patients treated with the Talent and those treated with the Endofit endoprosthesis. Treating abdominal aortic aneurysms with aorto-uni-iliac endoprosthesis is as safe and effective as treating them with bifurcated endografts.
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- 2007
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10. Using statins to reduce cardiovascular risk after carotid endarterectomy.
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Floros G, Anagnostou V, Tsiga E, Ferenidou F, and Papadimitriou D
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- Humans, Cardiovascular Diseases prevention & control, Endarterectomy, Carotid adverse effects, Hydroxymethylglutaryl-CoA Reductase Inhibitors therapeutic use
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- 2006
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11. Prolongation of the intestinal viability using oxygenated perfluorocarbon in an experimental model of acute intestinal ischemia.
- Author
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Papadimitriou DK, Pitoulias GA, Kotakidou RE, Alvanou Achparaki AE, and Kaidoglou Anagnostopoulou EN
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- Acute Disease, Animals, Cell Survival drug effects, Ischemia pathology, Ligation, Male, Mesenteric Arteries surgery, Mesenteric Veins surgery, Rabbits, Blood Substitutes pharmacology, Fluorocarbons pharmacology, Intestines blood supply, Ischemia physiopathology
- Abstract
Objectives: Liquid perfluorocarbons (PFCs) are well known for their capability to carry respiratory gases. The aim of this study was to evaluate the effectiveness of oxygenated F-Decalin on the intestinal viability, in an experimental model of acute intestinal ischemia., Material and Methods: Thirty-six rabbits were subjected to 8h intestinal ischemia by ligation of the superior mesenteric artery (subgroups 1), the mesenteric vein (subgroups 2) or both vessels (subgroups 3). The animals were divided into three groups: (a) Control (ischemia alone), (b) PFC-O2 (ischemia plus infusion of oxygenated F-Decalin) and (c) PFC (ischemia plus infusion of not-oxygenated F-Decalin). Intestinal biopsies from four different sites and blood samples for serum enzymes measurements were taken at 2, 4, 6 and 8 h. All tissue sections were examined blindly under light microscope. Sections from the specimens were taken at 4 and 8 h, and examined blindly under the electron microscope. Statistical analysis was performed by non-parametric Kruskal Wallis test., Results: Using light microscope, the observed intestinal damages to the sections from Control and PFC groups were severe at 4 h and destructive after 8 h. On the contrary, minimal injuries were observed in the biopsies from PFC-O2 group at 4 and even after 8 h of ischemia. These findings were confirmed by the electron microscope study and correlated to the serum enzymes measurements., Conclusions: These results suggest that intestinal viability could be prolonged after acute ischemia using oxygenated perfluorocarbons and this could be a promising pretreatment modality for a variety of mesenteric ischemic forms.
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- 2004
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12. Reduced dialysis of nitrofurantoin and hydrocortisone acetate from methylcellulose solutions.
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Papadimitriou D and Sheth BB
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- Chemical Phenomena, Chemistry, Dialysis, Rheology, Solutions, Temperature, Viscosity, Hydrocortisone analogs & derivatives, Methylcellulose, Nitrofurantoin
- Abstract
Factors affecting reduction in the permeation rate of nitrofurantoin and hydrocortisone acetate from methylcellulose solutions through a cellulose membrane were investigated. The factors evaluated were the effect of polymer agglomeration and whether the drugs formed a complex with the polymer. The influence of polymer agglomeration was evaluated by dynamic dialysis studies of nitrofurantoin dissolved in solutions of methylcellulose 400 cps, which agglomerates, and in methylcellulose 50 cps, which does not exhibit this behavior. Dialysis rates of this drug were measured as a function of polymer concentration, ionic strength, heating time prior to measurement, and temperature. The effect of polymer agglomeration on the permeation rates of hydrocortisone acetate was studied by varying the ionic strength of the drug-polymer solution. Complex formation studies were conducted for both drugs by the equilibrium dialysis method. Polymer agglomeration caused a substantial reduction in the dialysis rate of both drugs in methylcellulose 400 cps solutions. There was less reduction in the dialysis rate of nitrofurantoin with increased polymer concentration of methylcellulose 50 cps solutions, which was attributed to the increase in the bulk viscosity of the solution. There was no evidence of complex formation of the drugs with the polymers.
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- 1980
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13. Colorimetric determination of penicillins and related compounds in intravenous solutions by nickel (II)-catalyzed hydroxamic acid formation.
- Author
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Munson JW, Papadimitriou D, and DeLuca PP
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- Catalysis, Colorimetry, Drug Stability, Hydroxamic Acids chemical synthesis, Methods, Nickel, Solutions analysis, Hydroxamic Acids analysis, Penicillins analysis
- Abstract
Solutions of ampicillin, carbenicillin, methicillin, oxacillin, penicillin G, and cephalothin in 5% dextrose were analyzed by nickel(II)-catalyzed hydroxylaminolysis. The reactions of these antibiotics were complete within 20 min at room temperature. Under the analytical conditions, molar absorptivities of the ferric-hydroxamate complexes ranged from 830 to 1005 liters/mole/cm. Coefficients of variation for the analysis of these antibiotics in 5% dextrose were typically less than 3% at concentrations of 1 mg/ml. Oxacillin was analyzed by the same method in normal saline and/or lactated Ringer solutions. The method also was applied to the analysis of chloramphenicol in aqueous solutions. Only ampicillin showed a significant decrease in concentration in 48 hr.
- Published
- 1979
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