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Publications
Publications (37)
Citation: Paprocka, R.; Wiese-Szadkowska, M.; Kołodziej, P.; Kutkowska, J.; Balcerowska, S.; Bogucka-Kocka, A. Evaluation of Biological Activity of New 1,2,4-Triazole Derivatives Containing Propionic Acid Moiety. Molecules 2023, 28, 3808. https://doi. Abstract: To this day, the quest to find new drugs is still a challenge due to the growing demands...
Amidrazones are known for the broad biological activity of their derivatives (antimicrobial, anti-inflammatory, antiparasitic, antitumor and others). While searching for new drugs, twelve new derivatives of N3-substituted amidrazones were obtained in the reaction with cis-1,2,3,6-tetrahydrophthalic anhydride. The structures of obtained linear compo...
1H-pyrrole-2,5-dione derivatives are known for their wide range of pharmacological properties, including anti-inflammatory and antimicrobial activities. This study aimed to synthesize new 3,4-dimethyl-1H-pyrrole-2,5-dione derivatives 2a–2f in the reaction of N3-substituted amidrazones with 2,3-dimethylmaleic anhydride and evaluate their structural...
Confirmation of the biological effectiveness of new ophthalmic preparations introduced in the market is an important element in maintaining the safety of using this type of medications. This study aimed to investigate the activity of Ozodrop® on human corneal and conjunctival epithelial cells, as well as its antibacterial and antifungal activity. C...
Background:
The incidence of human infection and colonization with methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant enterococci (VRE) has increased in the recent years. Environmental sources, including bird droppings, might play an important role as resistance reservoirs.
Results:
Fresh fecal samples were collected fro...
Cellobiose dehydrogenase (CDH, EC 1.1.99.18) is a glycoprotein having many biotechnological applications. In the present study, CDHs isolated from Phlebia lindtneri (PlCDH), Phanerochaete chrysosporium (PchCDH), Cerrena unicolor (CuCDH), and Pycnoporus sanguineus (PsCDH) were studied the first time for their ability to generate antioxidant and anti...
A new Au(III) complex was synthesized from an amidrazone derivative and HAuCl4. Cyclization of amidrazone moiety lead to the 1,2,4-triazolo[1,5a]pyridine ring system, followed by Au(III) chelation. The crystal and molecular structure of the final compound was studied by single crystal X-ray diffraction as well as by ¹H–¹³C and ¹H–¹⁵N HMQC- and HMBC...
An antifungal active fraction (AAF) from the coelomic fluid (CF) of the earthworm Dendrobaena veneta was isolated. The aim of the study was to analyze the antifungal activity of the AAF and to carry out chemical characterization of the fraction. The active fraction showed antifungal activity against a clinical C. albicans isolate, C. albicans ATCC...
List of all proteins identified for two databases (Annelida and Lophotrohozoa), in the gel bands (protein FDR<1%) along with their occurrences provided by Unused ProtScores, numbers of peptides (95% confidence), total and percent of sequence coverage.
The empty cells indicate lack of identification at the selected protein FDR threshold in a given e...
The series of new hydrazide derivatives were synthesized in reactions of N³-substituted amidrazones with cyclic anhydrides as potential anti-inflammatory and antibacterial agents. The compounds were characterized by ¹H-¹³C two-dimensional NMR techniques, which revealed the presence of two tautomeric forms in DMSO-d6 solutions, while the molecular s...
Rhizobia that nodulate peas comprise a heterogeneous group of bacteria. The aim of this study was to investigate the relationship between phylogeny and electrophoretic and hydroxy fatty acid lipopolysaccharide (LPS) profiles of pea microsymbionts. Based on amplified fragment length polymorphism (AFLP) fingerprinting data, the pea microsymbionts wer...
Abstract: The series of 1,2,4-triazole derivatives containing methacrylic acid moiety were synthesized in reaction
of N3-substituted amidrazones with itaconic anhydride. Preliminary calculated bioavailability parameters
of obtained compounds suggested good penetration via cell membranes and their good absorption after oral
intake. Antimicrobial eva...
In this study, new O-benzyl oxime ethers of (2-Thienyl)ethan-1-one were synthesized and tested for their antimicrobial activity. First, we prepared, in a pure form, (E)-oxime of (2-Thienyl)ethan-1-one. Then, we obtained eight final products with good yields and purities. The structure elucidation of the titled compounds was performed by ¹H NMR, ¹³C...
In this study, some O-benzyl (benzofuran-2-yl)ethan-1-one ether oximes were synthesized starting from 2-acetylbenzofuran. The structure elucidation of the compounds was performed by IR, 1H-NMR and 13CNMR spectra. Antimicrobial activities of the compounds were examined and notable activity was observed.
Shiga toxin-producing Escherichia coli (STEC) strains are commensal bacteria in cattle with high potential for transmission to humans. The serotype E. Coli O157:H7 is the main cause of hemorrhagic colitis and hemolytic-uremic syndrome. E. Coli O157 synthesizes an O-antigen containing a repeating tetrasaccharide with the structure (4-N-acetyl-perosa...
Production of extracellular polysaccharides is a complex process engaging proteins localized in different subcellular compartments, yet communicating with each other or even directly interacting in multicomponent complexes. Proteins involved in polymerization and transport of exopolysaccharide (EPS) in Rhizobium leguminosarum are encoded within the...
A series of novel compounds were synthesized in reactions of N(3) -substituted amidrazones with cis-1,2-cyclohexanedicarboxylic anhydride: linear, isoindole, and triazole derivatives. All new structures were confirmed by H(1) NMR and IR spectrometry as well as elemental analysis. Potential biological effects of new compounds were predicted with the...
h i g h l i g h t s " New isomeric 1,2,4-triazole-containing alkenoic acids are obtained. " Mechanisms of base-catalyzed and neutral thermal 1,3-proton shifts are studied theoretically. " The structures are confirmed by 1D and 2D NMR and single crystal X-ray diffraction analysis. " Antimicrobial activity of the 1,2,4-triazole-containing alkenoic ac...
Lipopolysaccharides (LPS) from Rhizobium leguminosarum biovar trifolii TA1 (RtTA1) and its mutant Rt120 in the pssBpssA intergenic region as well as degraded polysaccharides (DPS) derived from the LPS were elucidated in terms of their chemical composition and biological activities. The polysaccharide portions were examined by methylation analysis,...
Figure S1 - Western blotting analysis of membrane and extracellular protein fractions of the R. leguminosarum wild type and the rosR mutant (Rt2472) with polyclonal antisera against PssB (A) and PssN (B). The migration positions of molecular mass markers are shown. Lines 1-6: extracellular protein fractions isolated from 10 ml of: Rt24.2 TY culture...
Rhizobium leguminosarum bv. trifolii is a symbiotic nitrogen-fixing bacterium that elicits nodules on roots of host plants Trifolium spp. Bacterial surface polysaccharides are crucial for establishment of a successful symbiosis with legumes that form indeterminate-type nodules, such as Trifolium, Pisum, Vicia, and Medicago spp. and aid the bacteriu...
An analysis of the products of the reaction of N3-phenylbenzamidrazone with cis-1,2-cyclohexanedicarboxylic anhydride at various temperatures is presented. The identification of the reaction products is carried on with the support of computational techniques. The most stable conformers of the isoindole and triazole derivatives are found within the...
The O-polysaccharide of Mesorhizobium loti HAMBI 1148 was obtained by mild acid degradation of the lipopolysaccharide and studied by sugar and methylation analyses, Smith degradation, and (1)H and (13)C NMR spectroscopies, including 2D (1)H/(1)H COSY, TOCSY, ROESY, and H-detected (1)H/(13)C HSQC experiments. The O-polysaccharide was found to have a...
The Rhizobium leguminosarum bv. trifolii pssB gene encodes a protein with inositol monophosphatase activity (I-1-Pase) which shares sequence similarity with a family of diverse prokaryotic and eukaryotic enzymes. A pssB::lacZ-Gm r mutant (Rt12A) that does not synthesize I-1-Pase exhibits a wide range of pleiotropic phenotypic alterations. These cha...
Mesorhizobium loti NZP2213.1 mutant obtained after random Tn5 mutagenesis of M. loti NZP2213 was inefficient in nitrogen fixation on Lotus corniculatus. The transposon insertion was located within an ORF with a sequence similarity to a putative glycosyl transferase from Caulobacter crescentus. The results of sodium dodecyl sulfate-polyacrylamide ge...
Rhizobium leguminosarum biovar trifolii strain TA1 polysaccharide synthesis (pss) mutants in the pssD, pssP, pssT and pssO genes and altered in exopolysaccharide (EPS) synthesis were investigated. EPS-deficient mutants were also changed in lipopolysaccharide structure. All mutants exhibited varied sensitivities to detergents, ethanol and antibiotic...
SummaryA Rhizobium leguminosarum bv. trifolii Tn5 transposon mutant deficient in exopolysaccharide biosynthesis was found to form non-nitrogen fixing nodules on clover. Root nodules induced by the mutant contained aberrant infection threads and few bacteroids. Sequence analysis of the transposon insertion site localized the mutation in the pssB-pss...
The lethality and cytokines-inducing activity of lipopolysaccharides (LPS) obtained from nodulating bacteria, Rhizobium leguminosarum and Mesorhizobium loti, were compared to those of Salmonella typhimurium LPS. The activity of R. leguminosarum LPS was almost comparable to Salmonella endotoxin in terms of lethality, Limulus lysate gelating activity...
Lipopolysaccharides (LPSs) isolated from seven strains of Mesorhizobium were studied for the presence of fatty acids with particular attention for 27-oxooctacosanoic acid and 4-oxo fatty acids. The LPSs from all analysed strains contained various amounts of 27-oxo-28:0 and all of them, with the exception of Mesorhizobium tianshanense, contained als...
