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      Relationship between Antifungal Activity against Candida albicans and Electron Parameters of Selected N-Heterocyclic Thioamides

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          Abstract

          Due to the increasing demand for new pharmaceuticals showing biological activity against pathogenic microorganisms, there is increasing search for new compounds with predicted biological activity. Variously substituted thioamide derivatives with 1.3 and 1.2 ring of thiazole and 1,3,4-thiadiazole, as well as pyrazole were assessed for their activity against Candida albicans. Activity of majority of tested thioamides was larger as compared with that of the reference drugs. The electron parameters of obtained N-heterocyclic thioamides were determined and dependencies on their biological activity against Candida albicans were studied. The best electron compliance of produced bindings with the activity against Candida albicans was observed for the derivatives containing 1,3,4-thiadiazole ring.

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          Most cited references57

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          Absolute electronegativity and hardness: application to inorganic chemistry

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            Absolute electronegativity and hardness correlated with molecular orbital theory.

            The concepts of absolute electronegativity, chi, and absolute hardness, eta, are incorporated into molecular orbital theory. A graphic and concise definition of hardness is given as twice the energy gap between the highest occupied molecular orbital and the lowest unoccupied molecular orbital. Useful correlations can now be made between chemical behavior, visible-UV absorption spectra, optical polarizability, ionization potentials, and electron affinities.
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              Secular trends in the epidemiology of nosocomial fungal infections in the United States, 1980-1990. National Nosocomial Infections Surveillance System.

              To identify pathogens causing nosocomial fungal infections and the secular trend in their incidence in US hospitals, data from the National Nosocomial Infections Surveillance System, 1980-1990, were analyzed. During that period, 30,477 fungal infections were reported. The rate rose from 2.0 to 3.8 infections/1000 discharges. The highest number of nosocomial fungal infections/1000 discharges was reported from the burn/trauma service (16.1). Candida albicans was the most frequently isolated fungal pathogen (59.7%), followed by other Candida species (18.6%). The rate increased at all four major anatomic sites of infection. Patients with bloodstream infections who had a central intravascular catheter were more likely to have a fungal pathogen isolated than were other patients with bloodstream infection (relative risk = 3.2; P < .001): 29% of fungemia patients and 17% of patients with bloodstream infection due to other pathogens died during hospitalization (P < .001). Fungi are emerging as important nosocomial pathogens and control efforts should target fungal infections, especially fungemia.
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                Author and article information

                Journal
                Indian J Pharm Sci
                Indian J Pharm Sci
                IJPhS
                Indian Journal of Pharmaceutical Sciences
                Medknow Publications & Media Pvt Ltd (India )
                0250-474X
                1998-3743
                Jul-Aug 2014
                : 76
                : 4
                : 287-298
                Affiliations
                [1]University of Life Sciences in Lublin, Department of Chemistry, 15 Akademicka Street, 20-950 Lublin, Poland
                [1 ]Medical University of Bialystok, Department of General Nursing, Bialystok, Poland
                Author notes
                [* ] Address for correspondence E-mail: jadwiga.stachowicz@ 123456up.lublin.pl
                Article
                IJPhS-76-287
                4171865
                25284926
                5bdf2c78-4a38-4fbf-a8f4-38e8588b6cda
                Copyright: © Indian Journal of Pharmaceutical Sciences

                This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 10 June 2013
                : 25 April 2014
                : 03 May 2014
                Categories
                Research Paper

                Pharmacology & Pharmaceutical medicine
                thioamides,antifungal activity,candida albicans,electron parameters

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