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Therapeutic drug monitoring

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https://www.readbyqxmd.com/read/28324932/an-ict-and-mobile-health-integrated-approach-to-optimize-patients-education-on-hypertension-and-its-management-by-physicians-the-patients-optimal-strategy-of-treatment-post-pilot-study
#1
Fabio Albini, Xiaoqiu Liu, Camilla Torlasco, Davide Soranna, Andrea Faini, Renata Ciminaghi, Ada Celsi, Matteo Benedetti, Antonella Zambon, Marco di Rienzo, Gianfranco Parati
INTRODUCTION: Uncontrolled hypertension is largely attributed to unsatisfactory doctor's engagement in its optimal management and to poor patients' compliance to therapeutic interventions. ICT and mobile Health solutions might improve these conditions, being widely available and providing highly effective communication strategies. OBJECTIVE: To evaluate whether ICT and mobile Health tools are able to improve hypertension control by improving doctors' engagement and by increasing patients' education and involvement, and their compliance to lifestyle modification and prescribed drug therapy...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28318747/ultra-fast-quantitation-of-voriconazole-in-human-plasma-by-coated-blade-spray-mass-spectrometry
#2
Marcos Tascon, Germán Augusto Gómez-Ríos, Nathaly Reyes-Garcés, Justen Poole, Ezel Boyacı, Janusz Pawliszyn
Voriconazole is a triazole broad-spectrum antifungal medication often used to treat fungal infections caused by Aspergillus and Fusarium species. One of the main challenges associated with the implementation of this medication is its narrow therapeutic concentration range, demonstrating toxicity at concentrations above 6μg/mL and limited efficacy at concentrations below 2μg/mL. As a result, methodologies which permit the rapid and accurate quantitation of voriconazole in patients are highly desirable. In this work two different approaches based on coated blade spray directly coupled to mass spectrometry (CBS-MS) are introduced; each enabling the quantitation of voriconazole in plasma samples with a simple and fast sample preparation and no chromatographic step...
March 12, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28318610/pharmacogenetics-of-immunosuppressants-state-of-the-art-and-clinical-implementation%C3%A2-%C3%A2-recommendations-from-the-french-national-network-of-pharmacogenetics-rnpgx
#3
Jean-Baptiste Woillard, Laurent Chouchana, Nicolas Picard, Marie-Anne Loriot
Therapeutic drug monitoring is already widely used for immunosuppressive drugs due to their narrow therapeutic index. This article summarizes evidence reported in the literature regarding the pharmacogenetics of (i) immunosuppressive drugs used in transplantation and (ii) azathioprine used in chronic inflammatory bowel disease. The conditions of use of currently available major pharmacogenetic tests are detailed and recommendations are provided based on a scale established by the RNPGx scoring tests as "essential", "advisable" and "potentially useful"...
January 30, 2017: Thérapie
https://www.readbyqxmd.com/read/28318043/the-effects-of-pregnancy-on-the-pharmacokinetics-of-infliximab-and-adalimumab-in-inflammatory-bowel-disease
#4
C H Seow, Y Leung, N Vande Casteele, E Ehteshami Afshar, D Tanyingoh, G Bindra, M J Stewart, P L Beck, G G Kaplan, S Ghosh, R Panaccione
BACKGROUND: Transplacental transfer of infliximab and adalimumab results in detectable drug levels in the cord blood and infant. AIM: To determine if pregnancy influenced the pharmacokinetics of anti-TNF agents in women with inflammatory bowel disease. METHODS: Twenty-five women from the University of Calgary inflammatory bowel disease(IBD) pregnancy clinic on maintenance infliximab or adalimumab were recruited prospectively with serum bio-banking performed each trimester...
March 20, 2017: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28317040/intra-individual-variability-of-mycophenolic-acid-concentration-according-to-renal-function-in-liver-transplant-recipients-receiving-mycophenolate-monotherapy
#5
Shin Hwang, Gi-Won Song, Dong-Hwan Jung, Gil-Chun Park, Chul-Soo Ahn, Deok-Bog Moon, Tae-Yong Ha, Ki-Hun Kim, Sung-Gyu Lee
BACKGROUNDS/AIMS: Mycophenolate mofetil (MMF) has wide inter- and intra-individual variability of mycophenolic acid (MPA) after liver transplantation (LT). On this study, we aimed to analyse the intra-individual variability of MPA concentration in stable adult LT recipients receiving MMF monotherapy and develop a method to determine the target level in the situation of wide intra-individual variability. METHODS: This retrospective cross-sectional study included 30 LT recipients...
February 2017: Ann Hepatobiliary Pancreat Surg
https://www.readbyqxmd.com/read/28306150/biomarkers-a-general-review
#6
Jeffrey K Aronson, Robin E Ferner
A biomarker is a biological observation that substitutes for and ideally predicts a clinically relevant endpoint or intermediate outcome that is more difficult to observe. The use of clinical biomarkers is easier and less expensive than direct measurement of the final clinical endpoint, and biomarkers are usually measured over a shorter time span. They can be used in disease screening, diagnosis, characterization, and monitoring; as prognostic indicators; for developing individualized therapeutic interventions; for predicting and treating adverse drug reactions; for identifying cell types; and for pharmacodynamic and dose-response studies...
March 17, 2017: Current Protocols in Pharmacology
https://www.readbyqxmd.com/read/28303314/-genetic-tests-for-controlling-treatment-with-antidepressants
#7
T Bschor, C Baethge, C Hiemke, B Müller-Oerlinghausen
In clinical practice, there is a need for a more individualized selection of antidepressants and adequate dosage. The investigation of pharmacokinetically relevant genes is a promising approach to assist this selection. In the past 2 years, two commercially available tests have been subject of advertisement, a test from Stada, which analyses variants of the cytochrome P450 isoenzymes CYP2D6 and CYP2C19 and a test from HMNC Brain Health, which analyses variants of the ABCB1 gene. The costs for both kits are not covered by the statutory health insurance and it is therefore proposed that the patients are invoiced directly in the form of individual healthcare payment...
March 16, 2017: Der Nervenarzt
https://www.readbyqxmd.com/read/28302953/guidelines-for-therapeutic-drug-monitoring-of-cardiovascular-drugs-clinical-use-of-blood-drug-concentration-monitoring-jcs-2015-%C3%A3-digest-version
#8
Kazutaka Aonuma, Tsuyoshi Shiga, Hirotsugu Atarashi, Kosuke Doki, Hirotoshi Echizen, Nobuhisa Hagiwara, Junichi Hasegawa, Hideharu Hayashi, Kenzo Hirao, Fukiko Ichida, Takanori Ikeda, Yorinobu Maeda, Naoki Matsumoto, Toshiyuki Sakaeda, Wataru Shimizu, Mitsuru Sugawara, Kyoichi Totsuka, Yoshimasa Tsuchishita, Kazuyuki Ueno, Eiichi Watanabe, Masayuki Hashiguchi, Sumio Hirata, Hidefumi Kasai, Yoshiaki Matsumoto, Akihiko Nogami, Yukio Sekiguchi, Tokuko Shinohara, Atsushi Sugiyama, Naokata Sumitomo, Atsushi Suzuki, Naohiko Takahashi, Eiji Yukawa, Masato Homma, Minoru Horie, Hiroshi Inoue, Hiroshi Ito, Takanori Miura, Tohru Ohe, Kimikazu Shinozaki, Kazuhiko Tanaka
No abstract text is available yet for this article.
March 9, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28302916/advances-in-heart-failure-a-review-of-biomarkers-emerging-pharmacological-therapies-durable-mechanical-support-and-telemonitoring
#9
REVIEW
Yasbanoo Moayedi, Heather J Ross
The purpose of this review is to provide an overview of diagnosis, prognosis and management of heart failure (HF) with reduced ejection fraction (HFrEF). Specifically, this review is divided into three sections. The first section will address biomarkers. The discovery of biomarkers has allowed further understanding of the pathophysiology of HF and provides insight into potential therapeutic targets. This review will focus on novel applications of natriuretic peptides (NPs) in clinical trials. Next, emerging biomarkers of HF, such as ST2, galectin-3 and copeptin, will be discussed...
April 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28302754/apixaban-pharmacokinetics-at-steady-state-in-hemodialysis-patients
#10
Thomas A Mavrakanas, Caroline F Samer, Sharon J Nessim, Gershon Frisch, Mark L Lipman
It is unclear whether warfarin is protective or harmful in patients with ESRD and atrial fibrillation. This state of equipoise raises the question of whether alternative anticoagulants may have a therapeutic role. We aimed to determine apixaban pharmacokinetics at steady state in patients on hemodialysis. Seven patients received apixaban 2.5 mg twice daily for 8 days. Blood samples were collected before and after apixaban administration on days 1 and 8 (nondialysis days). Significant accumulation of the drug was observed between days 1 and 8 with the 2...
March 16, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28302501/pharmacokinetic-considerations-in-antipsychotic-augmentation-strategies-how-to-combine-risperidone-with-low-potency-antipsychotics
#11
Michael Paulzen, Georgios Schoretsanitis, Benedikt Stegmann, Christoph Hiemke, Gerhard Gründer, Koen R J Schruers, Sebastian Walther, Sarah E Lammertz, Ekkehard Haen
OBJECTIVES: To investigate in vivo the effect of low-potency antipsychotics on metabolism of risperidone (RIS). METHODS: A therapeutic drug monitoring database containing plasma concentrations of RIS and its metabolite 9-OH-RIS of 1584 patients was analyzed. Five groups were compared; a risperidone group (n=842) and four co- medication groups; a group co-medicated with chlorprothixene (n=67), a group with levomepromazine (n=32), a group with melperone (n=46), a group with pipamperone (n=63) and a group with prothipendyl (n=24)...
March 14, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28302415/a-prospective-study-to-assess-the-association-between-genotype-phenotype-and-prakriti-in-individuals-on-phenytoin-monotherapy
#12
Saket J Thaker, Prajakta P Gandhe, Charuta J Godbole, Shital R Bendkhale, Nitin B Mali, Urmila M Thatte, Nithya J Gogtay
BACKGROUND: Genetic polymorphisms in drug metabolizing enzymes (DMEs) impart distinct drug metabolizing capacity and a unique phenotype to an individual. Phenytoin has large inter-individual variability in metabolism due to polymorphisms in CYP2C9 and CYP2C19. As per Ayurveda, Prakriti imparts a unique phenotype to an individual. OBJECTIVE: To assess whether Prakriti can substitute phenotyping [therapeutic drug monitoring (TDM)] and genotyping in individualizing therapy with phenytoin in epilepsy patients...
March 14, 2017: Journal of Ayurveda and Integrative Medicine
https://www.readbyqxmd.com/read/28302015/multicolorful-carbon-dots-for-tumor-theranostics
#13
Haitao Wang, Jingran Bi, Beiwei Zhu, Mingqian Tan
Cancer is a great threat of human health worldwide due to the uncontrollable spread of malignant cells throughout the body. Accurate diagnosis and targeted therapy approaches are critical factors for cancer treatment. Carbon dots are a novel class of small fluorescence carbon nanostructures with size less than 10 nm at least in one dimension, which exhibit excellent optical properties, larger surface area to volume ratio and low toxicity. The unique properties of carbon dots make it as an ideal carrier for incorporation of cancer targeting moieties, bio-imaging agents and antineoplastic agents in one delivery system...
March 16, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28301873/personalising-and-targeting-antiangiogenic-resistance-a-complex-and-multifactorial-approach
#14
REVIEW
Maria J Bueno, Silvana Mouron, Miguel Quintela-Fandino
Pathological angiogenesis involves complex and dynamic interactions between tumour cells and other lineages existing in the microenvironment of the tumour. Preclinical and clinical data suggest that tumours can show dual, different adaptive responses against antiangiogenic agents: one successful adaptation is vascular normalisation, whereas the second adaptation is elicited through vascular trimming and increased hypoxia. These phenomena depend on the type of tumour and the type of agent. The classical approach for investigating acquired resistance against antiangiogenic agents is to identify compensatory signalling pathways emerging in response to VEGF blockade, which has led to the development of highly effective drugs; however, ultimately these drugs fail...
March 16, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28300558/therapeutic-efficacy-of-chloroquine-for-the-treatment-of-plasmodium-vivax-malaria-among-outpatients-at-shawa-robit-health-care-center-north-east-ethiopia
#15
Seble Seifu, Ahmed Zeynudin, Endalew Zemene, Sultan Suleman, Abdissa Biruksew
Nearly 40% of all malaria infection in Ethiopia is caused by Plasmodium vivax (P. vivax). Chloroquine (CQ) is the first line treatment for confirmed P. vivax malaria in the country. However, the efficacy of this drug has been compromised by CQ resistant P. vivax (CRPv) strains. Therefore, the present study was aimed at assessing the therapeutic efficacy of CQ for treatment of P. vivax malaria at Shawa Robit Health Care Centre, North-Ease Ethiopia. A one-arm, 28-day follow-up, in vivo therapeutic efficacy study was conducted from October 2013 to February 2014...
March 11, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28298235/clinical-and-molecular-surveillance-of-drug-resistant-vivax-malaria-in-myanmar-2009-2016
#16
Myat Htut Nyunt, Jin-Hee Han, Bo Wang, Khin Myo Aye, Kyin Hla Aye, Seong-Kyun Lee, Ye Htut, Myat Phone Kyaw, Kay Thwe Han, Eun-Taek Han
BACKGROUND: One of the major challenges for control and elimination of malaria is ongoing spread and emergence of drug resistance. While epidemiology and surveillance of the drug resistance in falciparum malaria is being explored globally, there are few studies on drug resistance vivax malaria. METHODS: To assess the spread of drug-resistant vivax malaria in Myanmar, a multisite, prospective, longitudinal study with retrospective analysis of previous therapeutic efficacy studies, was conducted...
March 16, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28298082/a-reliable-fret-probe-based-on-structure-switching-dna-for-ratiometric-sensing-of-telomerase-in-living-cells
#17
Xue-Jiao Yang, Kai Zhang, Tingting Zhang, Jing-Juan Xu, Hong-Yuan Chen
In situ detection and monitoring of telomerase is of great importance as it is a relatively specific cancer target. However, the complexity of biological system makes it difficult for the nanoprobe to keep absolutely stable and low background in living cells. This study designs a probe termed FRET nanoflares to achieve ratiometric fluorescent detection of intracellular telomerase with higher specificity, which can effectively resist the disturbance from DNase I and GSH, etc. The probe is composed of a gold nanoparticle (AuNP) which is functioned with telomerase primer sequences (TS) and flares fluorescently labeled donors and acceptors at two terminals...
March 16, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28295448/drug-rechallenge-following-drug-induced-liver-injury
#18
REVIEW
Christine M Hunt, Julie I Papay, Vid Stanulovic, Arie Regev
Drug induced hepatocellular injury is identified internationally by ALT 5x upper limits normal (ULN) appearing within 3 months of drug initiation, after alternative causes are excluded. Upon withdrawing the suspect drug, ALT generally decreases by 50% or more. With drug readministration, a positive rechallenge has recently been defined by an ALT 3-5xULN or greater. Nearly 50 drugs are associated with positive rechallenge after drug-induced liver injury (DILI): antimicrobials, central nervous system, cardiovascular and oncology therapeutics...
March 13, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28294369/a-simple-and-cost-effective-hplc-uv-method-for-the-detection-of-levetiracetam-in-plasma-serum-of-patients-with-epilepsy
#19
REVIEW
Lynette Engelbrecht, C J Grobler, Malie Rheeders
A simple, fast and cost-effective method was developed and validated for the determination of levetiracetam (LEV) in plasma/serum of patients using high performance liquid chromatography (HPLC) with ultra violet detection. The stability of LEV plasma/serum samples over time and in different blood collection tubes was evaluated. Serum/plasma samples were deproteinised by methanol spiked with the internal standard, gabapentin. HPLC was carried out on a Venusil XBP C18, 250 x 4.6 mm, 5 µm column, flow rate of 1...
March 10, 2017: Biomedical Chromatography: BMC
https://www.readbyqxmd.com/read/28294122/aptamer-based-field-effect-biosensor-for-tenofovir-detection
#20
N Aliakbarinodehi, P Jolly, N Bhalla, A Miodek, G De Micheli, P Estrela, S Carrara
During medical treatment it is critical to maintain the circulatory concentration of drugs within their therapeutic range. A novel biosensor is presented in this work to address the lack of a reliable point-of-care drug monitoring system in the market. The biosensor incorporates high selectivity and sensitivity by integrating aptamers as the recognition element and field-effect transistors as the signal transducer. The drug tenofovir was used as a model small molecule. The biointerface of the sensor is a binary self-assembled monolayer of specific thiolated aptamer and 6-mercapto-1-hexanol (MCH), whose ratio was optimized by electrochemical impedance spectroscopy measurements to enhance the sensitivity towards the specific target...
March 15, 2017: Scientific Reports
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