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Therapeutic drug monitoring

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https://www.readbyqxmd.com/read/29793038/therapeutic-drug-monitoring-and-safety-of-voriconazole-therapy-in-patients-with-child-pugh-class-b-and-c-cirrhosis-a-multicenter-study
#1
Taotao Wang, Miao Yan, Dan Tang, Ling Xue, Tao Zhang, Yuzhu Dong, Li Zhu, Xinggang Wang, Yalin Dong
OBJECTIVES: The purpose of this study was to investigate the pharmacokinetic profile and safety of voriconazole treatment in patients with Child-Pugh class B and C cirrhosis. METHODS: Liver cirrhosis patients receiving recommended voriconazole maintenance dose (group A) and halved maintenance dose (group B) orally or intravenously were involved. Voriconazole-related adverse events (AEs) were defined according to Common Terminology Criteria for Adverse Events. RESULTS: A total of 110 voriconazole Cmin were monitored from 78 patients...
May 21, 2018: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/29792734/clinical-updates-on-perianal-fistulas-in-crohn-s-disease
#2
Ori Rackovsky, Robert Hirten, Ryan Ungaro, Jean-Frederic Colombel
Perianal fistulizing disease is an aggressive and debilitating phenotype of Crohn's disease (CD), representing a significant therapeutic challenge. New work has led to advancement in epidemiology and long term outcomes of perianal disease. The range of therapeutic options continues to expand, including new biologic agents, biosimilars, and stem cell therapy. Areas covered: We discuss updates to all aspects of management of perianal disease, with a focus on the last three years of published data. Areas considered include new data on epidemiology and prognostication, medical and surgical therapy, and stem cell therapy...
May 24, 2018: Expert Review of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/29790360/-current-and-future-pharmacotherapy-of-severe-psychiatric-disorders
#3
Eva Češková
Despite of tremendous development in CNS research, current treatment is suboptimal especially in severe mental disorders. In medicine, there are two main methods of improving the healthcare provided: seeking new treatment procedures and perfecting (optimizing) the existing ones. Optimization of treatment includes not only practical tools such as therapeutic drug monitoring, but also implementation of general trends into the clinical practice. New pharmacological options include drugs aimed at other than monoaminergic systems and old drugs used before the psychopharmacological era...
2018: Casopís Lékar̆ů C̆eských
https://www.readbyqxmd.com/read/29790082/chronic-administration-of-pimozide-fails-to-attenuate-motor-and-pathological-deficits-in-two-mouse-models-of-amyotrophic-lateral-sclerosis
#4
Silvia Pozzi, Sai Sampath Thammisetty, Jean-Pierre Julien
Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disease which presently does not have any efficient therapeutic approach. Pimozide, a Food and Drug Administration (FDA)-approved neuroepileptic drug, has been recently proposed as a promising treatment for ALS patients based on apparent stabilization of right hand muscles after a short-time administration. A new clinical trial started at the end of 2017 to recruit patients with a prolonged drug delivery schedule. Here, our aim was to investigate the effects of chronic administration of pimozide on disease progression and pathological events in two mouse models of ALS...
May 22, 2018: Neurotherapeutics: the Journal of the American Society for Experimental NeuroTherapeutics
https://www.readbyqxmd.com/read/29788839/phenobarbital-pharmacokinetics-in-neonates-and-infants-during-extracorporeal-membrane-oxygenation
#5
Pavla Pokorná, Martin Šíma, Václav Vobruba, Dick Tibboel, Ondřej Slanař
INTRODUCTION: The disposition of drugs is potentially changed due to extracorporeal membrane oxygenation (ECMO) in neonates and infants. METHODS: The aim of the study was to evaluate the individual pharmacokinetics (PK) of phenobarbital and the effect of PK covariates in neonates and infants undergoing ECMO. Sixteen patients (7 neonates, 9 infants) treated with phenobarbital during ECMO (centrifugal-flow pump circuits) were enrolled in the PK study. Phenobarbital serum concentrations were measured using a fluorescence polarization immunoassay...
May 2018: Perfusion
https://www.readbyqxmd.com/read/29788338/clinical-pharmacology-in-adult-and-pediatric-inflammatory-bowel-disease
#6
Amy Hemperly, William J Sandborn, Niels Vande Casteele
This review describes the clinical pharmacology of the major drugs used for the treatment of patients with inflammatory bowel disease (IBD). Pharmacokinetics, drug metabolism, mechanism of action, efficacy, and safety profile are discussed. Some small molecules were developed to act systemically (eg, ozanimod) or locally (eg, aminosalicylates) and thus have disparate pharmacokinetic properties. In addition, locally acting compounds have been optimized to mitigate systemic exposure-eg, budesonide, which undergoes extensive first-pass metabolism-thereby reducing systemic bioavailability and side effects...
May 17, 2018: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/29788272/therapeutic-drug-monitoring-with-ustekinumab-and-vedolizumab-in-inflammatory-bowel-disease
#7
Sophie Restellini, Reena Khanna, Waqqas Afif
In patients with Crohn's disease (CD) and ulcerative colitis (UC), the use of therapeutic drug monitoring (TDM) with TNF-α antagonists has led to a personalized approach to optimize treatment and has been shown to be cost-effective. The utility of this TDM-based personalized approach for novel biologic agents, which target different inflammatory pathways, is unclear. Commercial assays for ustekinumab (UST) and vedolizumab (VDZ) are available, but there is little available guidance for clinicians regarding the use of TDM with these drugs...
May 17, 2018: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/29783197/quantification-of-21-antihypertensive-drugs-in-serum-using-uhplc-ms-ms
#8
Per Ole M Gundersen, Arne Helland, Olav Spigset, Solfrid Hegstad
BACKGROUND: Poor drug adherence in hypertensive patients can lead to treatment failure and increased cardiovascular morbidity, as well as increased costs to society. An analytical method based on ultra-performance liquid chromatography tandem mass spectrometry (UPLC-MSMS) was developed and validated for use in routine therapeutic drug monitoring (TDM). The method includes 21 antihypertensive drugs or active metabolites from the groups beta blockers (n=5), calcium antagonists (n=5), angiotensin II receptor antagonists (n=4), angiotensin converting enzyme (ACE) inhibitors (n=3) and diuretics (n = 3), in addition to one α1-selective alpha blocker...
April 28, 2018: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/29782992/single-ultra-high-dose-cholecalciferol-to-prevent-vitamin-d-deficiency-in-pediatric-hematopoietic-stem-cell-transplantation
#9
Gregory Wallace, Sonata Jodele, Kasiani C Myers, Christopher E Dandoy, Javier El-Bietar, Adam Nelson, Ashley Teusink-Cross, Pooja Khandelwal, Cynthia Taggart, Catherine M Gordon, Stella M Davies, Jonathan C Howell
BACKGROUND: Vitamin D (vitD) deficiency is prevalent among childhood hematopoietic stem cell transplantation (HSCT) recipients and associated with inferior transplant survival at 100 days after transplantation. Achieving and maintaining therapeutic vitD levels in HSCT recipients is extremely challenging in the first 3-6 months after transplant due to poor compliance in the setting of mucositis, and concomitant use of critical transplant drugs that interfere with vitD absorption. We sought to evaluate the safety and efficacy of a single, ultra-high dose of vitD given prior to childhood HSCT to maintain levels in a therapeutic range during the peri-transplantation period...
May 18, 2018: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29780921/is-it-melanoma-associated-retinopathy-or-drug-toxicity-bilateral-cystoid-macular-edema-posing-a-diagnostic-and-therapeutic-dilemma
#10
Sachi R Patel, Stavros N Moysidis, Nicole Koulisis, Philip P Storey, Amir H Kashani, Narsing A Rao, Damien C Rodger
Purpose: To report the clinical presentation, multimodal imaging, and management of a patient with metastatic melanoma who presented with cystoid macular edema (CME). Observations: We report a case of a 71-year-old Caucasian male with metastatic melanoma who presented with bilateral cystoid macular edema after being on treatment with a programmed T cell death ligand 1 inhibitor, MPDL3280, for 1 year. Multimodal imaging techniques, including color fundus photographs, autofluorescence, spectral domain optical coherence tomography (OCT), fluorescein angiography (Spectralis, Heidelberg, Germany), and spectral-domain OCT angiography (Zeiss; California, USA) were performed to evaluate the etiology of his CME and to monitor his response to treatment...
June 2018: American Journal of Ophthalmology Case Reports
https://www.readbyqxmd.com/read/29777802/derivation-and-characterization-of-a-ucp1-reporter-human-es-cell-line
#11
Suranjit Mukherjee, Tuo Zhang, Lauretta A Lacko, Lei Tan, Jenny Zhaoying Xiang, Jason M Butler, Shuibing Chen
Interest in human brown fat as a novel therapeutic target to tackle the growing obesity and diabetes epidemic has increased dramatically in recent years. While much insight into brown fat biology has been gained from murine cell lines and models, few resources are available to study human brown fat in vitro, which makes the need for new ways to derive and study human brown adipocytes imperative. Human ES cell based reporter systems present an excellent tool to identify, mark, and purify cell populations of choice...
April 22, 2018: Stem Cell Research
https://www.readbyqxmd.com/read/29777253/translation-inhibition-corrects-aberrant-localization-of-mutant-alanine-glyoxylate-aminotransferase-possible-therapeutic-approach-for-hyperoxaluria
#12
Ruth Belostotsky, Roman Lyakhovetsky, Michael Y Sherman, Fanny Shkedy, Shimrit Tzvi-Behr, Roi Bar, Bernd Hoppe, Björn Reusch, Bodo B Beck, Yaacov Frishberg
Primary hyperoxaluria type 1 is a severe kidney stone disease caused by abnormalities of the peroxisomal alanine-glyoxylate aminotransferase (AGT). The most frequent mutation G170R results in aberrant mitochondrial localization of the active enzyme. To evaluate the population of peroxisome-localized AGT, we developed a quantitative Glow-AGT assay based on the self-assembly split-GFP approach and used it to identify drugs that can correct mislocalization of the mutant protein. In line with previous reports, the Glow-AGT assay showed that mitochondrial transport inhibitors DECA and monensin increased peroxisomal localization of the mutant...
May 18, 2018: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
https://www.readbyqxmd.com/read/29776316/a-systematic-review-and-combined-analysis-of-therapeutic-drug-monitoring-studies-for-oral-paliperidone
#13
Georgios Schoretsanitis, Edoardo Spina, Christoph Hiemke, Jose de Leon
This article includes a combined analysis of therapeutic drug monitoring (TDM) studies and a review of the marketer's data on pharmacological mechanisms. Areas covered: An article search led to the inclusion of 21 paliperidone studies in the systematic review plus 2 case reports. Paliperidone clearance was calculated from: 1) steady-state studies using concentration/dose (C/D) ratios, and 2) single-dose studies describing 24-hour area under the curve calculations. The marketed extended-release formulation has 28% bioavailability...
May 18, 2018: Expert Review of Clinical Pharmacology
https://www.readbyqxmd.com/read/29775811/determination-of-docetaxel-in-dried-blood-spots-by-lc-ms-ms-method-development-validation-and-clinical-application
#14
S Raymundo, V V Muller, N B Andriguetti, M Tegner, A C Artmann, H M Kluck, M A Franzoi, R M M Vilela, G Schwartsmann, R Linden, M V Antunes
In this study, a LC-MS/MS method for the measurement of docetaxel in Dried Blood Spots (DBS) samples was developed and validated. Docetaxel was extracted from 8 mm DBS punch with a mixture of methanol and acetonitrile (9:1, v/v). The chromatographic separation occurred in an Acquity® C18 column (150 × 2.1 mm, 1.7 μm) eluted with a mixture of water and acetonitrile plus 0.1% formic acid (45:55, v/v). Total analytical run time was 7 min. The method was linear from 50 to 3000 ng ml-1 . Precision assays showed CV% < 9...
May 15, 2018: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29775685/phenotypic-and-genetic-resistance-traits-in-pseudomonas-aeruginosa-strains-infecting-cystic-fibrosis-patients-a-french-cohort-study
#15
Nathalie Courtois, Yvan Caspar, Max Maurin
Pseudomonas aeruginosa is responsible for chronic respiratory tract colonisation and acute exacerbations in cystic fibrosis (CF) patients. This Gram-negative bacterium often develops multidrug resistance, which represents a therapeutic challenge. Our objective was to characterize the phenotypic and genetic β-lactam resistance traits of P. aeruginosa strains isolated from CF patients followed at Grenoble Alpes university hospital. The susceptibility to β-lactam compounds of 123 P. aeruginosa strains collected from the lower respiratory tract of 45 CF patients, between 2010 and 2014, was evaluated...
May 15, 2018: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/29774074/placenta-specific-drug-delivery-by-trophoblast-targeted-nanoparticles-in-mice
#16
Baozhen Zhang, Lunbo Tan, Yan Yu, Baobei Wang, Zhilong Chen, Jinyu Han, Mengxia Li, Jie Chen, Tianxia Xiao, Balamurali K Ambati, Lintao Cai, Qing Yang, Nihar R Nayak, Jian Zhang, Xiujun Fan
Rationale: The availability of therapeutics to treat pregnancy complications is severely lacking, mainly due to the risk of harm to the fetus. In placental malaria, Plasmodium falciparum- infected erythrocytes (IEs) accumulate in the placenta by adhering to chondroitin sulfate A (CSA) on the surfaces of trophoblasts. Based on this principle, we have developed a method for targeted delivery of payloads to the placenta using a synthetic placental CSA-binding peptide (plCSA-BP) derived from VAR2CSA, a CSA-binding protein expressed on IEs...
2018: Theranostics
https://www.readbyqxmd.com/read/29774052/therapeutic-drug-monitoring-of-vedolizumab-in-inflammatory-bowel-disease-current-data-and-future-directions
#17
REVIEW
Mark G Ward, Miles P Sparrow, Xavier Roblin
The introduction of vedolizumab, a lymphocyte adhesion inhibitor, has expanded the relatively limited therapeutic armamentarium available for Crohn's disease and ulcerative colitis. Despite its effectiveness, both primary nonresponse and secondary loss of response to vedolizumab do occur, as is observed with the use of anti-tumour necrosis factor (TNF) therapy. Further, in a proportion, onset of efficacy may be relatively slow. A large body of data support an exposure-response relationship with anti-TNF drug levels, which has led to therapeutic drug monitoring becoming incorporated into everyday clinical management...
2018: Therapeutic Advances in Gastroenterology
https://www.readbyqxmd.com/read/29771146/nanosized-ethanol-based-malleable-liposomes-of-cytarabine-to-accentuate-transdermal-delivery-formulation-optimization-in-vitro-skin-permeation-and-in-vivo-bioavailability
#18
Rakesh Raj, Pooja Mongia Raj, Alpana Ram
Cytarabine is a pyrimidine nucleoside analog used predominantly for acute myeloid leukemia (AML) and also for other indications, including acute lymphocytic leukemia, chronic myelogenous leukemia, and lymphoma by parenteral route due to its low oral bioavailability. Parenteral administration requires constant plasma level, monitoring for its fluctuation and poor patients compliances. Hence the objective of this work is to construct optimized nanosized malleable liposomes of cytarabine to accentuate transdermal delivery of drug to circumvent previously mentioned drawbacks...
May 17, 2018: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29768657/simultaneous-quantification-of-fentanyl-sufentanil-cefazolin-doxapram-and-keto-doxapram-in-plasma-using-liquid-chromatography-tandem-mass-spectrometry
#19
Robert B Flint, Soma Bahmany, Bart C H van der Nagel, Birgit C P Koch
A simple and specific UPLC-MS/MS method was developed and validated for simultaneous quantification of fentanyl, sufentanil, cefazolin, doxapram and its active metabolite keto-doxapram. The internal standard was fentanyl-d5 for all analytes. Chromatographic separation was achieved with a reversed phase Acquity UPLC HSS T3 column with a run-time of only 5.0 minutes per injected sample. Gradient elution was performed with a mobile phase consisting of ammonium acetate, formic acid in Milli-Q ultrapure water or in methanol with a total flow rate of 0...
May 16, 2018: Biomedical Chromatography: BMC
https://www.readbyqxmd.com/read/29767471/converting-immunosuppression-from-an-oral-suspension-to-a-granule-formulation-of-tacrolimus-in-pediatric-renal-transplant-recipients
#20
Georgia Malakasioti, Christine Booth, Stephen D Marks
OS of tacrolimus prepared from tacrolimus powder is not licensed for children. A licensed GF for OS allows flexibility for body weight-based dose adjustments. This study aimed at exploring the efficacy of conversion from OS to the GF of tacrolimus in stable pediatric renal transplant recipients. Records of 25 pediatric renal transplant recipients aged under 18 years who were switched from an unlicensed tacrolimus OS to GF were reviewed. At day 0, 1 week, and 4-8 weeks post-conversion, there were no differences regarding daily tacrolimus dose (3...
May 16, 2018: Pediatric Transplantation
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