Synthesis, structure and cytotoxic activity of mono- and dialkoxy derivatives of 5,8-quinolinedione

A series of 5,8-quinolinedione derivatives containing one or two alkoxy groups was synthesized and characterized by 1H- and 13C-NMR, IR and MS spectra. X-ray diffraction was used to investigate the crystal structures of 6-chloro-7-(2-cyjanoethoxy)-5,8-quinolinedione and 6,7-di(2,2,2-trifloroethoxy)-5,8-quinolinedione. All studied compounds were tested in vitro for their antiproliferative activity against three human cancer cell lines and human normal fibroblasts. Most of the compounds showed higher cytotoxicity than the starting compound, 6,7-dichloro-5,8-quinolinedione, and cisplatin, which was used as a reference agent

Synthesis and Structural Characterization of a New 1,2,3-Triazole Derivative of Pentacyclic Triterpene

The new 30-substituted triazole derivative of 3,28-O,O0-diacetylbetulin was obtained in the copper(I) catalyzed azide-alkyne cycloaddition (CuAAC). The title compound was characterized by NMR, IR, HR-MS, and X-ray diffraction techniques. The X-ray diffraction study showed that the 1,2,3-triazole derivative crystallizes in the orthorhombic space group P212121, Z = 4, and unit cell parameters are as follows a = 9.4860(10) Å, b = 13.9440(2) Å, and c = 30.2347(4) Å. The molecular packing is stabilized by intermolecular hydrogen interactions C-H . . . O. The Hirshfeld surface analysis showed the presence of the O . . . H interactions with a percentage of the 16.5% in the total Hirshfeld area. The MEP analysis showed that the nucleophilic regions are located near the oxygen atoms of the acyl and carbonyl groups of betulin moiety and the sulfur atom in the triazole linker. The HOMO and LUMO orbitals are located near the triazole moiety. The obtained results indicated that this new betulin derivative is more reactive with electrophilic than nucleophilic molecules

Powikłany nawracającymi epizodami choroby podstawowej przebieg dializoterapii otrzewnowej u pacjentki z rodzinną gorączką śródziemnomorską

W niniejszej pracy przedstawiono problemy kliniczne, które wystąpiły po 20 miesiącach od rozpoczęcia przewlekłej dializoterapii otrzewnowej (DO) u pochodzącej z Armenii pacjentki w wieku 26 lat ze schyłkową niewydolnością nerek spowodowaną amyloidozą wtórną w przebiegu rodzinnej gorączki śródziemnomorskiej (FMF). Rodzinna gorączka śródziemnomorska jest chorobą dziedziczną o nieznanej etiologii, charakteryzującą się nawracającymi epizodami gorączki oraz zapaleniem błon surowiczych i/lub stawów. Po wielomiesięcznym niepowikłanym leczeniu DO u pacjentki dwukrotnie miały miejsce nawroty choroby podstawowej sugerujące wystąpienie dializacyjnego zapalenia otrzewnej. Ze względu na nawracające ataki pod postacią, między innymi, surowiczego zapalenia otrzewnej, u chorej zaprzestano DO. Czasowe przerwanie stosowania przez pacjentkę długotrwale przyjmowanej kolchicyny mogło mieć związek z pojawieniem się nawrotów FMF

Cell Wall Anchoring of the Campylobacter Antigens to Lactococcus lactis

Campylobacter jejuni is the most frequent cause of human food-borne gastroenteritis and chicken meat is the main source of infection. Recent studies showed that broiler chicken immunization against Campylobacter should be the most efficient way to lower the number of human infections by this pathogen. Induction of the mucosal immune system after oral antigen administration should provide protective immunity to chickens. In this work we tested the usefulness of Lactococcus lactis, the most extensively studied lactic acid bacterium, as a delivery vector for Campylobacter antigens. First we constructed hybrid protein – CjaA antigen presenting CjaD peptide epitopes on its surface. We showed that specific rabbit anti-rCjaAD serum reacted strongly with both CjaA and CjaD produced by a wild type Campylobacter jejuni strain. Next, rCjaAD and CjaA were fused to the C-terminus of the L. lactis YndF containing the LPTXG motif. The genes expressing these proteins were transcribed under control of the L. lactis Usp45 promoter and their products contain the Usp45 signal sequences. This strategy ensures a cell surface location of both analysed proteins, which was confirmed by immunofluorescence assay. In order to evaluate the impact of antigen location on vaccine prototype efficacy, a L. lactis strain producing cytoplasm-located rCjaAD was also generated. Animal experiments showed a decrease of Campylobacter cecal load in vaccinated birds as compared with the control group and showed that the L. lactis harboring the surface-exposed rCjaAD antigen afforded greater protection than the L. lactis producing cytoplasm-located rCjaAD. To the best of our knowledge, this is the first attempt to employ LAB (Lactic Acid Bacteria) strains as a mucosal delivery vehicle for chicken immunization. Although the observed reduction of chicken colonization by Campylobacter resulting from vaccination was rather moderate, the experiments showed that LAB strains can be considered as an alternative vector to deliver heterologous antigens to the bird immune system. Additionally, the analysis of the structure and immunogenicity of the generated rCjaAD hybrid protein showed that the CjaA antigen can be considered as a starting point to construct multiepitope anti-Campylobacter vaccines

Bacterial urinary tract infections in children — a single-center report

Wstęp. Zakażenia układu moczowego (ZUM) należą do jednych z najczęstszych infekcji bakteryjnych u dzieci. Cel pracy. Analiza epidemiologii bakteryjnych ZUM u dzieci. Materiał i metody. Analizie retrospektywnej poddano dokumentację medyczną 251 pacjentów hospitalizowanych z powodu ZUM w Klinice Nefrologii Dziecięcej UM w Lublinie w latach 2009–2013. Oceniano etiologię ZUM w zależności od płci, wieku, miejsca zamieszkania, liczby epizodów ZUM oraz współistniejących patologii w obrębie układu moczowego. Wyniki. Najczęściej izolowanym patogenem powodującym ZUM była Escherichia coli. Zaobserwowano ujemną korelację pomiędzy wiekiem dzieci a częstością ZUM. Występowanie poszczególnych patogenów wykazuje różnice w zależności od wieku i płci. Wnioski. 1. Escherichia coli wywołuje najwięcej epizodów ZUM. 2. Występowanie u dzieci wad układu moczowego i zaburzeń czynności dróg moczowych zwiększa częstość epizodów ZUM.Introduction. Urinary tract infections (UTI) are one of the most common bacterial infections in children. Aim of the study. The occurrence of pathogens causing UTI in children was analyzed. Material and methods. Medical records of children with UTI treated in the Department of Pediatric Nephrology, Medical University of Lublin between 2009 and 2013 were studied. Results. The most common uropathogen was Escherichia coli. Negative correlation between age and incidence of UTI in children was observed. There were differences in the occurrence of pathogens in relation to age and gender. Conclusions. 1. The most common pathogen of UTI is Escherichia coli. 2. The presence of urinary tract malformations or dysfunction increases the incidence of UTI

Comparison of whole genome expression profile between preterm and full-term newborns

Objectives: Evaluate the time dependent expression of genes in preterm neonates and verify the influence of ontogenic maturation and the environmental factors on the gene expression after birth. Material and methods: The study was carried out on 20 full-term newborns and 62 preterm newborns (mean birth weight = 1002 [g] (SD: 247), mean gestational age = 27.2 weeks (SD: 1.9)). Blood samples were drawn from all the study participants at birth and at the 36th week postmenstrual age from the preterm group to assess whole genome expression in umbilical cord blood and in peripheral blood leukocytes, respectively. (SurePrint G3 Human Gene Expression v3, 8x60K Microarrays (Agilent)). Results: A substantial number of genes was found to be expressed differentially at the time of birth and at 36 PMA in comparison to the term babies with more genes being down-regulated than up-regulated. However, the fold change in the majority of cases was < 2.0. Extremely preterm and very preterm infants were characterized by significantly down-regulated cytokine and chemokine related pathways. The number of down-regulated genes decreased and number of up-regulated genes increased at 36 PMA vs. cord blood. There were no specific gene expression pathway profiles found within the groups of different gestational ages. Conclusions: Preterm delivery is associated with a different gene expression profile in comparison to term delivery. The gene expression profile changes with the maturity of a newborn measured by the gestational age