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Chunqiu Tian et al.
Se pu = Chinese journal of chromatography, 29(11), 1128-1132 (2012-03-08)
A high performance capillary electrophoresis (HPCE) method was developed for the simultaneous determination of penicillin intermediate and penicillins in milk, including 6-amino-penicillanic acid (6-APA), penicillin G (PEN), ampicillin (AMP) and amoxicillin (AMO). The main parameters including the ion concentration and
6-aminopenicillanic acid.
Rolinson GN.
Chemotherapy, 2(1), 52-59 (1961)
A T Karagulle Kendi et al.
AJNR. American journal of neuroradiology, 29(7), 1276-1278 (2008-05-03)
Isolated bilateral striatal necrosis is an abnormality of the basal ganglia associated with acute dystonia in children. This report describes the development of dystonic movements in a 7-year-old male patient 2 weeks after streptococcal pharyngitis.
José Luis Martínez-Hernández et al.
Applied biochemistry and biotechnology, 160(7), 2045-2053 (2009-09-22)
The production of extracellular and mycelia-associated penicillin G acylase (maPGA) with Mucor griseocyanus H/55.1.1 by surface-adhesion fermentation using Opuntia imbricata, a cactus, as a natural immobilization support was studied. Enzyme activity to form 6-aminopencillanic acid (6-APA) from penicillin G was
Weihua Song et al.
The journal of physical chemistry. A, 112(32), 7411-7417 (2008-07-22)
Many pharmaceutical compounds and metabolites are being found in surface and ground waters, indicating their ineffective removal by conventional wastewater treatment technologies. Advanced oxidation/reduction processes (AO/RPs), which utilize free-radical reactions to directly degrade chemical contaminants, are alternatives to traditional water
Yangyang Jiang et al.
Applied biochemistry and biotechnology, 144(2), 145-159 (2008-05-06)
A dodecane/thermosensitive polymer/water three-liquid-phase system was introduced for enzymatic hydrolysis of penicillin G (Pen G) for 6-aminopenicillanic acid (6-APA). The enzyme was covalently attached to the terminal of PEO-PPO-PEO polymer (L63), which would be transferred into a polymer coacervate phase
Guolin Li et al.
Cell metabolism, 26(4), 672-685 (2017-09-19)
While activation of beige thermogenesis is a promising approach for treatment of obesity-associated diseases, there are currently no known pharmacological means of inducing beiging in humans. Intermittent fasting is an effective and natural strategy for weight control, but the mechanism
Faridoon et al.
Bioorganic & medicinal chemistry letters, 22(7), 2555-2559 (2012-03-01)
Purple acid phosphatases (PAPs) are binuclear metallohydrolases that have a multitude of biological functions and are found in fungi, bacteria, plants and animals. In mammals, PAP activity is linked with bone resorption and over-expression can lead to bone disorders such
J Swaminathan et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 75(1), 183-190 (2009-11-10)
Quantum mechanical calculations of energies, geometries and vibrational wavenumbers of 6-aminopenicillanic acid were carried out by using ab initio HF and density functional theory (DFT/B3LYP) methods with 6-311G(d,p) basis set. The optimized geometrical parameters obtained by HF and DFT calculations
Shu-Guang Fang et al.
Preparative biochemistry & biotechnology, 40(1), 38-45 (2009-12-22)
Enzymatic hydrolysis of penicillin G for production of 6-amino-penicillanic-acid (6-APA) was achieved by using penicillin G acylase as catalyst in an aqueous-methylisobutyl ketone (MIBK) system. The optimization was carried out and it was found that the best conversion was improved
An efficient nonenzymatic conversion of benzylpenicillin to 6-aminopenicillanic acid.
Weissenburger HWO and Van Der Hoeven MG.
Rec. Trav. Chim., 89(10), 1081-1084 (1970)
Francesco Crea et al.
European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences, 47(4), 661-677 (2012-08-21)
The total solubility of three penicillin derivatives was determined, in pure water and NaCl aqueous solutions at different salt concentrations (from ∼0.15 to 1.0 mol L(-1) for ampicillin and amoxicillin, and from ∼0.05 to 2.0 mol L(-1) for (+)6-aminopenicillanic acid)
Edson Romano Nucci et al.
Bioprocess and biosystems engineering, 33(5), 557-564 (2009-09-04)
The complexity of biological processes often makes impractical the development of detailed, structured phenomenological models of the cultivation of microorganisms in bioreactors. In this context, data pre-treatment techniques are useful for bioprocess control and fault detection. Among them, principal component
Chromium scavenging ability of silver nanoparticles in human erythrocytes, real samples and their effect on the catalase enzyme.
Rasheed W, et al.
New. J. Chem., 40(4), 3793-3802 (2016)
The Garrod lecture. The influence of 6-aminopenicillanic acid on antibiotic development.
G N Rolinson
The Journal of antimicrobial chemotherapy, 22(1), 5-14 (1988-07-01)
Zhiqiang Chen et al.
Journal of hazardous materials, 185(2-3), 905-913 (2010-10-26)
A full-scale test was conducted with an up-flow anaerobic sludge blanket (UASB) pre-treating pharmaceutical wastewater containing 6-aminopenicillanic acid (6-APA) and amoxicillin. The aim of the study is to investigate the performance of UASB in the condition of a high chemical
Lucie Vobecká et al.
New biotechnology, 47, 73-79 (2018-04-04)
Aqueous two-phase systems (ATPSs) were screened for the production of 6-aminopenicillanic acid (6-APA) catalyzed by penicillin acylase, followed by the extractive separation of 6-APA from the reaction mixture. The key point of this study was to find an ATPS exhibiting
6-Aminopenicillanic acid revisited: A combined solid state NMR and in silico refinement
de Aguiar, Daniel Lima Marques, et al.
Chemical Physics Letters, 660, 214-220 (2016)
Joanna Skiba et al.
European journal of medicinal chemistry, 57, 234-239 (2012-10-18)
We report on the synthesis of ferrocenyl-ampicillin and ferrocenyl-6-aminopenicillinic acid bioconjugates. Title compounds were characterized by (1)H NMR, IR, MS and elemental analysis. These novel ferrocenyl-antibiotic conjugates were also investigated by cyclic voltammetry (CV). Ferrocenyl-ampicillin complexes revealed reversible uncomplicated oxidation
Ye-Wang Zhang et al.
Applied microbiology and biotechnology, 88(1), 49-55 (2010-06-23)
A one-pot, two-step enzymatic synthesis of amoxicillin from penicillin G, using penicillin acylase, is presented. Immobilized penicillin acylase from Kluyvera citrophila was selected as the biocatalyst for its good pH stability and selectivity. Hydrolysis of penicillin G and synthesis of
David A Harris et al.
Bioorganic & medicinal chemistry letters, 19(14), 3787-3790 (2009-05-12)
We report the first synthesis of a 5S penem, known to bind bacterial type I signal peptidase, from the commercially available and inexpensive 6-aminopenicillanic acid. We report the first in vivo activity of the compound and use structure-activity relationship studies
Junqi Zhao et al.
Bioresource technology, 102(2), 529-535 (2010-10-23)
In this study, macro-mesoporous silica spheres were prepared with a micro-device and used as the support for the immobilization of penicillin G acylase (PGA). To measure the enzymatic activity, the silica spheres with immobilized PGA were placed into a packed-bed
Rubina Arshad et al.
Pakistan journal of biological sciences : PJBS, 10(21), 3931-3935 (2008-12-19)
The present study was conducted to see the difference in production of 6-APA I) between wild strains of E. coli collected from local environment and their acridine orange (AO) induced mutants and ii) between mutants and E. coli strains (ATCC
Louis Anthony Tony Cox et al.
Risk analysis : an official publication of the Society for Risk Analysis, 29(6), 796-805 (2009-06-06)
Penicillin and ampicillin drugs are approved for use in food animals in the United States to treat, control, and prevent diseases, and penicillin is approved for use to improve growth rates in pigs and poultry. This article considers the possibility
Organotin polyamine esters from reaction of 6-aminopenicillanic acid and organotin dihalides
Carraher Jr CE, et al.
J. Polym. Mater., 29(4), 387-387 (2012)
Lisa M Bergeron et al.
Archives of biochemistry and biophysics, 481(1), 45-51 (2008-11-04)
The functionality of regions within the equatorial domain of Group II chaperonins is poorly understood. Previously we showed that a 70 amino acid sequence within this domain on the single-subunit recombinant thermosome from Methanocaldococcus jannaschii (rTHS) contains residues directly responsible
A K Dolui et al.
Indian journal of experimental biology, 49(4), 289-292 (2011-05-28)
In the present study different bacterial samples were isolated from soil of different places of Dibrugarh and screened for biotransformation ability to produce 6-Aminopenicillanic acid. Among ten isolated bacterial samples, three gram positive bacterial samples designated as AKDD-2, AKDD-4 and
Teresa Jackowska et al.
Medycyna wieku rozwojowego, 12(2 Pt 2), 705-712 (2009-05-08)
the basis of urinary tract infection (UTI) diagnosis in children is based on positive results of microbiological tests. The selection of an antimicrobial drug for empirical treatment and prophylaxis of UTI is determined by the susceptibility of bacterial strains isolated
Optimality and robustness in quorum sensing (QS)-mediated regulation of a costly public good enzyme.
Anand Pai et al.
Proceedings of the National Academy of Sciences of the United States of America, 109(48), 19810-19815 (2012-11-13)
Bacteria secrete a variety of public good exoproducts into their environment. These exoproducts are typically produced under the control of quorum sensing (QS), a signaling mechanism by which bacteria sense and respond to changes in their density. QS seems to
V B Kurochkina et al.
Bioprocess and biosystems engineering, 34(9), 1103-1117 (2011-06-24)
The article deals with experimental determination of ionization constants and solubility for the compounds (target products, initial β-lactams, acylating agents and by-products) involved in enzymatic synthesis of some therapeutically used aminopenicillins and aminocephalosporins, namely ampicillin, amoxicillin, cephalexin, cephadroxil, cephaloglycin, cefaclor
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