Options for a Strategic Approach to Pharmaceuticals in the Environment
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
The Role of Nanobiosensors in Therapeutic Drug Monitoring
Journal of Personalized Medicine Review Personalized Medicine for Antibiotics: The Role of Nanobiosensors in Therapeutic Drug Monitoring Vivian Garzón 1, Rosa-Helena Bustos 2 and Daniel G. Pinacho 2,* 1 PhD Biosciences Program, Universidad de La Sabana, Chía 140013, Colombia; [email protected] 2 Therapeutical Evidence Group, Clinical Pharmacology, Universidad de La Sabana, Chía 140013, Colombia; [email protected] * Correspondence: [email protected]; Tel.: +57-1-8615555 (ext. 23309) Received: 21 August 2020; Accepted: 7 September 2020; Published: 25 September 2020 Abstract: Due to the high bacterial resistance to antibiotics (AB), it has become necessary to adjust the dose aimed at personalized medicine by means of therapeutic drug monitoring (TDM). TDM is a fundamental tool for measuring the concentration of drugs that have a limited or highly toxic dose in different body fluids, such as blood, plasma, serum, and urine, among others. Using different techniques that allow for the pharmacokinetic (PK) and pharmacodynamic (PD) analysis of the drug, TDM can reduce the risks inherent in treatment. Among these techniques, nanotechnology focused on biosensors, which are relevant due to their versatility, sensitivity, specificity, and low cost. They provide results in real time, using an element for biological recognition coupled to a signal transducer. This review describes recent advances in the quantification of AB using biosensors with a focus on TDM as a fundamental aspect of personalized medicine. Keywords: biosensors; therapeutic drug monitoring (TDM), antibiotic; personalized medicine 1. Introduction The discovery of antibiotics (AB) ushered in a new era of progress in controlling bacterial infections in human health, agriculture, and livestock [1] However, the use of AB has been challenged due to the appearance of multi-resistant bacteria (MDR), which have increased significantly in recent years due to AB mismanagement and have become a global public health problem [2]. -
Development and Validation of Liquid Chromatography-Based Methods to Assess the Lipophilicity of Cytotoxic Platinum(IV) Complexes
Article Development and Validation of Liquid Chromatography-Based Methods to Assess the Lipophilicity of Cytotoxic Platinum(IV) Complexes Matthias H. M. Klose 1,2, Sarah Theiner 3, Hristo P. Varbanov 1,4, Doris Hoefer 1, Verena Pichler 1,5, Markus Galanski 1, Samuel M. Meier-Menches 2,3,* and Bernhard K. Keppler 1,2,* 1 Institute of Inorganic Chemistry, University of Vienna, 1090 Vienna, Austria; [email protected] (M.H.M.K.); [email protected] (D.H.); [email protected] (M.G.) 2 Research Cluster ‘Translational Cancer Therapy Research’, University of Vienna, 1090 Vienna, Austria 3 Department of Analytical Chemistry, University of Vienna, 1090 Vienna, Austria; [email protected] 4 Institute of Chemistry—Inorganic Chemistry, University of Graz, 8010 Graz, Austria; [email protected] (H.P.V.) 5 Division of Nuclear Medicine, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, 1090 Vienna, Austria; [email protected] (V.P.) * Correspondence: [email protected] (S.M.M.-M.); [email protected] (B.K.K.); Tel.: +43-1-4277-52373 (S.M.M.-M.); +43-1-4277-52602 (B.K.K.) Received: 2 October 2018; Accepted: 29 November 2018; Published: 4 December 2018 Abstract: Lipophilicity is a crucial parameter for drug discovery, usually determined by the logarithmic partition coefficient (Log P) between octanol and water. However, the available detection methods have restricted the widespread use of the partition coefficient in inorganic medicinal chemistry, and recent investigations have shifted towards chromatographic lipophilicity parameters, frequently without a conversion to derive Log P. -
Environmental Risk Assessment of Antibiotics: Investigations Into Cyanobacteria Interspecies Sensitivities and Establishing Appropriate Protection Limits
Environmental Risk Assessment of Antibiotics: Investigations into Cyanobacteria Interspecies Sensitivities and Establishing Appropriate Protection Limits Submitted by Gareth Curtis Le Page to the University of Exeter as a thesis for the degree of Doctor of Philosophy in Biological Sciences In December 2018 This thesis is available for Library use on the understanding that it is copyright material and that no quotation from the thesis may be published without proper acknowledgement I certify that all material in this thesis which is not my own work has been identified and that no material has previously been submitted and approved for the award of a degree by this or any other University. Signature: …………………………………………………………...(Gareth Le Page) 1 Abstract Antibiotics have been described as a ‘wonder drug’ that have transformed medicine since their discovery at the beginning of the 20th century and are used globally in safeguarding human and animal health. Environmental risk assessment (ERA) aims to ensure their environmental safety by setting protection limits that seek to prevent adverse effects upon populations and ecosystem function. In the case of antibiotics however, there is concern that ERA may not be fully protective of bacterial populations. This thesis examines the ERA of antibiotics and highlights that protection limits may in some cases be under-protective or over-protective for bacteria populations (including cyanobacteria), depending on the antibiotic mode of action and the species on which the protection limit is based. The first section of the thesis contains a systematic review including a meta-analysis of all publically available aquatic ecotoxicity data. The results illustrate that generally bacteria are the most sensitive taxa to antibiotics compared with eukaryotes but that interspecies variability in sensitivity among bacteria can range by up to five orders of magnitude. -
Lipophilicity (Logd7.4) of N-Aryl Benzo Hydroxamic Acids
Global Journal of Pharmacy & Pharmaceutical Sciences ISSN: 2573-2250 Mini Review Glob J Pharmaceu Sci Volume 4 Issue 5 - february 2018 Copyright © All rights are reserved by Ajita Dixit DOI: 10.19080/GJPPS.2018.04.555648 Lipophilicity (LogD7.4) of N-Aryl Benzo Hydroxamic Acids Ajita Dixit* Pandit Ravishankar Shukla University, India Submission: July 24, 2017; Published: February 21, 2018 *Corresponding author: Ajita Dixit, Pandit Ravishankar Shukla University, India, Email: Abstract Hydroxamic acids are polyfunctional molecules which show a wide spectrum of biological and medicinal activities. Lipophilicity is known to be important for absorption, permeability and in vivo distribution of organic compound. Lipophilicity is also a major structural factor that influences the pharmacokinetic and pharmacodynamic behaviour of compound. Introduction homogeneously but rather, a gradient is formed that varies Lipophilicity is known to be important for absorption, with the composition and geometry of membrane [7]. The high permeability and in vivo distribution of organic compound degree of ordering of solutes in a lipid bi layer compared with a [1]. Since about one century, it is recognized as a meaningful parameter in Structure-activity relationship studies and with and partitioning. Never the less good correlation between the epoch making contributions of Hansch et al. [2] has become bulk liquid phase also significantly changes the thermodynamic the single most informative and successful physico-chemical membrane /buffer and octanol/water two phase’s systems has the partition coefficient of various lipophilic compounds in been observed [8]. property in medicinal chemistry. Lipophilicity is defined for a lipophilic environment.” Lipophilicity is determined Material and Methods “Lipophilicity represents the affinity of a molecule or a moiety valid only for a single chemical species) or as distribution experimentally as partition coefficients (written as logP and In the present investigation partition coefficient or n-Octanol and buffer as solvent. -
Structural Basis for Potent Inhibitory Activity of the Antibiotic Tigecycline During Protein Synthesis
Structural basis for potent inhibitory activity of the antibiotic tigecycline during protein synthesis Lasse Jennera,b,1, Agata L. Starostac,1, Daniel S. Terryd,e, Aleksandra Mikolajkac, Liudmila Filonavaa,b,f, Marat Yusupova,b, Scott C. Blanchardd, Daniel N. Wilsonc,g,2, and Gulnara Yusupovaa,b,2 aInstitut de Génétique et de Biologie Moléculaire et Cellulaire, Institut National de la Santé et de la Recherche Médicale U964, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7104, 67404 Illkirch, France; bUniversité de Strasbourg, F-67084 Strasbourg, France; cGene Center and Department for Biochemistry, University of Munich, 81377 Munich, Germany; dDepartment of Physiology and Biophysics, Weill Medical College of Cornell University, New York, NY 10065; eTri-Institutional Training Program in Computational Biology and Medicine, New York, NY 10065; fMax Planck Institute for Biophysical Chemistry, 37077 Göttingen, Germany; and gCenter for Integrated Protein Science Munich, University of Munich, 81377 Munich, Germany Edited by Rachel Green, Johns Hopkins University, Baltimore, MD, and approved January 17, 2013 (received for review September 28, 2012) + Here we present an X-ray crystallography structure of the clinically C1054 via a coordinated Mg2 ion (Fig. 1 D and E), as reported relevant tigecycline antibiotic bound to the 70S ribosome. Our previously for tetracycline (2). In addition, ring A of tigecycline + structural and biochemical analysis indicate that the enhanced coordinates a second Mg2 ion to facilitate an indirect interaction potency of tigecycline results from a stacking interaction with with the phosphate-backbone of G966 in h31 (Fig. 1 C–E). We also nucleobase C1054 within the decoding site of the ribosome. -
Lipophilicity As a Central Component of Drug-Like Properties of Chalchones and Flavonoid Derivatives
molecules Article Lipophilicity as a Central Component of Drug-Like Properties of Chalchones and Flavonoid Derivatives Teodora Constantinescu 1, Claudiu Nicolae Lungu 2,* and Ildiko Lung 3 1 Department of Chemistry, Faculty of Pharmacy, Iuliu Hatieganu University, 400012 Cluj-Napoca, Romania; [email protected] 2 Department of Chemistry, Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, 400028 Cluj-Napoca, Romania 3 National Institute for Research & Development of Isotopic and Molecular Technologies 67-103 Donath street, 400293 Cluj-Napoca, Romania; [email protected] * Correspondence: [email protected]; Tel.: +40-(0)-742-255-099 Received: 11 March 2019; Accepted: 10 April 2019; Published: 17 April 2019 Abstract: Lipophilcity is an important physico-chemical parameter that influences membrane transport and binding ability to action. Migration distance following complete elution of compounds was used to calculate different lipophilicity-related parameters. The aim of this study is to show that lipophilicity is a central component of thiazole chalcones and flavonoid derivatives regarding their drug-like properties. Experimental and computational methods were used. This study considers 44 previously synthesized compounds (thiazole chalcones, flavanones, flavones, 3-hydroxyflavones, and their acetylated derivatives). The concerned compounds have shown antitumoral hallmarks and antibacterial activity in vitro. The experimental method used to determine compounds’ lipophilicity was the reverse-phase thin layer chromatography (RP-TLC). Lipophilicity related 0 parameters—isocratic retention factor (RM), relative lipophily (RM ), slope (b), chromatographic hydrophobic index ('0), scores of principal components (PC1/RM)—were determined based on reverse-phase chromatography results. Keywords: lipophilicity; retention factor; chalcones; QSAR; chromatography; drug design 1. Introduction Lipophilicity is an important feature of molecules in pharmaceutical, biochemical, and medical chemistry fields. -
Treatment with Sub-Inhibitory Kanamycin Induces Adaptive Resistance to Aminoglycoside Antibiotics Via the Acrd Multidrug Efflux Pump in Escherichia Coli K-12
Journal of Experimental Microbiology and Immunology (JEMI) Vol. 16: 11 – 16 Copyright © April 2012, M&I UBC Treatment with Sub-inhibitory Kanamycin Induces Adaptive Resistance to Aminoglycoside Antibiotics via the AcrD Multidrug Efflux Pump in Escherichia coli K-12 Kiran Sidhu, Martha Talbot, Kirstin Van Mil, and Meghan Verstraete Department of Microbiology & Immunology, University of British Columbia Research has shown that exposing Escherichia coli cells to sub-inhibitory concentrations of kanamycin induces adaptive resistance upon subsequent exposure to lethal levels of both structurally-similar and unrelated antibiotics. AcrD is an efflux pump that forms a complex with the outer membrane pore TolC and the periplasmic membrane fusion protein AcrA. Together, this complex works to export a variety of aminoglycosides and amphiphilic compounds from the cell. The involvement of AcrD in the observed adaptive resistance was assessed by comparing the induction of adaptive resistance upon exposure to kanamycin in wild- type and acrD-deficient Escherichia coli strains. Both strains were pretreated with sub- inhibitory concentrations of kanamycin and subsequently exposed to lethal concentrations of ampicillin, kanamycin, nalidixic acid, streptomycin, and tetracycline. Growth was monitored over 18 hours via optical density readings. Comparing the relative growth of the different treatments revealed that adaptive resistance was only induced in the wild-type strain towards kanamycin and streptomycin. This indicates that AcrD is necessary for the induced adaptive resistance and that it is specific to aminoglycosides. Additionally, molecular techniques were used to assess the level of expression of acrA, which was found to be upregulated in both the wild-type and acrD deletion strains following pretreatment with kanamycin. -
Solvent Effect Modelling of Isocyanuric Products Synthesis by Chemometric Methods
Journal of Automated Methods & Management in Chemistry Vol. 24, No. 4 (July–August 2002) pp. 111–119 Solvent e´ ect modelling of isocyanuric products synthesis by chemometric methods Jean-Louis Havet, Myriam Billiau-Loreau, electric constant) or by empirical parameters (Dimroth± Catherine Porte* and Alain Delacroix Reichardt constant, Kosower constant). These data can Laboratoire de Chimie Industrielle et Geè nie des Proceè deè s, Conservatoire National be considered as good but partial indicators of polarity. des Arts et Meè tiers, 2 rue Conteè , F-75003 Paris, France Furthermore, the accumulation of empirical values shows that none of these de® nitions is totally convenient. The Chemometric tools were used to generate the modelling of solvent use of several parameters that are not independent in N e¡ects on the -alkylation of an isocyanuric acid salt. The method multiparametric equations allows one to improve the proceeded from a central composite design applied on the Carlson quanti® cation of polarity, but it remains insuæ cient to solvent classi¢cation using principal components analysis. The have a general classi® cation of solvents [3]. selectivity of the reaction was studied from the production of di¡erent substituted isocyanuric derivatives. Response graphs were The most ambitious approach for a general classi® cation obtained for each compound and used to devise a strategy for of solvents uses multivariate statistical methods [4, 5]. solvent selection. The prediction models were validated and used to The compilation of the physicochemical constants of search for the best selectivity for the reaction system. The solvent solvents allows one to take diå erent properties simulta- most often selected as the best for the reaction is the N,N- neously into account. -
Tetracyclines, Oral Therapeutic Class Review (TCR)
Tetracyclines, Oral Therapeutic Class Review (TCR) September 1, 2019 No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, digital scanning, or via any information storage or retrieval system without the express written consent of Magellan Rx Management. All requests for permission should be mailed to: Magellan Rx Management Attention: Legal Department 6950 Columbia Gateway Drive Columbia, Maryland 21046 The materials contained herein represent the opinions of the collective authors and editors and should not be construed to be the official representation of any professional organization or group, any state Pharmacy and Therapeutics committee, any state Medicaid Agency, or any other clinical committee. This material is not intended to be relied upon as medical advice for specific medical cases and nothing contained herein should be relied upon by any patient, medical professional or layperson seeking information about a specific course of treatment for a specific medical condition. All readers of this material are responsible for independently obtaining medical advice and guidance from their own physician and/or other medical professional in regard to the best course of treatment for their specific medical condition. This publication, inclusive of all forms contained herein, is intended to be educational in nature and is intended to be used for informational purposes only. Send comments and suggestions to [email protected]. September -
AP42 Chapter 9 Reference
Background Report Reference AP-42 Section Number: 9.2.2 Background Chapter: 4 Reference Number: 22 Title: "Critical Review of Henry's Law Constants fro Pesticides" in Reviews of Environmental Contamination and Toxicology L.R. Suntio 1988 AP-42 Section 9! Reference Report Sect. 3c L2% Critical Review of Henry's Law Constants Reference for Pesticides L.R. Sunti0,'W.Y. Shiu,* D. Mackay,* J.N. Seiber,** and D. Glotfelty*** Contents ......... ........... ........... ............. IV. Data Analysis ........ ........... ......... I V. Discussion .......... ........... .......... 41 ............. so .......... ............ I. Introduction Pesticides play an important role in maintaining agricultural productivity, but they may also be causes of contamination of air, water, soil, and food, with possible adverse effects on human and animal health. The proper use of pesticide chemicals must be based on an understanding of the behavior of the chemicals as they interact with air, water, soil, and biota, react or degrade, and migrate. This behavior is strongly influenced by the chemicals' physical- chemical properties of solubility in water, vapor pressure or volatility, and tendency to sorb to organic and mineral matter in the soil. Reviews of such physical-chemical properties have been compiled by Kenaga (1980), Kenaga and Goring (1980), Briggs (1981), and Bowman and Sans (1983) for aqueous solubility, octanol-water partition coefficient, bio- accumulation, and soil sorption; Spencer and Cliath (1970, 1973. 1983). and Spencer (1976) for vapor pressure and volatilization from soil. In this chapter we compile and discuss data for Henry's Law constant H (which is the ratio of solute partial pressure in the air to the equilibrium water concentration and thus has units of Pa m3/mol) or the air-water partition 'Department ofchemical Engineering and Applied Chemistry. -
The Effect of Lipophilicity on the Antibacterial Activity
J. Serb. Chem. Soc. 73 (10) 967–978 (2008) UDC 577.15:547.53:615.281–188 JSCS–3778 Original scientific paper The effect of lipophilicity on the antibacterial activity of some 1-benzylbenzimidazole derivatives S. O. PODUNAVAC-KUZMANOVIĆ1*#, D. D. CVETKOVIĆ1 and D. J. BARNA2 1Faculty of Technology, Bulevar Cara Lazara 1, 21000 Novi Sad and 2Institute of Public Health, Zmaj Jovina 30, 24000 Subotica, Serbia (Received 27 February, revised 13 May 2008) Abstract: In the present paper, the antibacterial activity of some 1-benzylbenz- imidazole derivatives were evaluated against the Gram-negative bacteria Esche- richia coli. The minimum inhibitory concentration was determined for all the compounds. Quantitative structure–activity relationship (QSAR) was employed to study the effect of the lipophilicity parameters (log P) on the inhibitory ac- tivity. Log P values for the target compounds were experimentally determined by the “shake-flask” method and calculated by using eight different software products. Multiple linear regression was used to correlate the log P values and antibacterial activity of the studied benzimidazole derivatives. The results are dis- cussed based on statistical data. The most acceptable QSAR models for the pre- diction of the antibacterial activity of the investigated series of benzimidazoles were developed. High agreement between the experimental and predicted inhi- bitory values was obtained. The results of this study indicate that the lipophi- licity parameter has a significant effect on the antibacterial activity of this class of compounds, which simplifies the design of new biologically active molecules. Keywords: benzimidazole derivatives; lipophilicity; quantitative structure–acti- vity relationship; antibacterial; in vitro studies. -
Transport, Behavior, and Fate of Volatile Organic Compounds in Streams U.S
U.S. Department of the Interior U.S. Geological Survey Transport, Behavior, and Fate of Volatile Organic Compounds in Streams U.S. Geological Survey Professional Paper 1589 science for a chanuinu world AVAILABILITY OF BOOKS AND MAPS OF THE U.S. GEOLOGICAL SURVEY Instructions on ordering publications of the U.S. Geological Survey, along with prices of the last offerings, are given in the current- year issues of the monthly catalog "New Publications of the U.S. Geological Survey." Prices of available U.S. Geological Survey publica tions released prior to the current year are listed in the most recent annual "Price and Availability List." Publications that may be listed in various U.S. Geological Survey catalogs (see back inside cover) but not listed in the most recent annual "Price and Availability List" may be no longer available. Order U.S. Geological Survey publications by mail or over the counter from the offices given below. BY MAIL OVER THE COUNTER Books Books and Maps Professional Papers, Bulletins, Water-Supply Papers, Tech Books and maps of the U.S. Geological Survey are available niques of Water-Resources Investigations, Circulars, publications over the counter at the following U.S. Geological Survey Earth of general interest (such as leaflets, pamphlets, booklets), single Science Information Centers (ESIC's), all of which are authorized copies of Preliminary Determination of Epicenters, and some mis agents of the Superintendent of Documents: cellaneous reports, including some of the foregoing series that have gone out of print at the Superintendent of Documents, are • ANCHORAGE, Alaska—Rm. 101,4230 University Dr.