1
|
Fínek J, Vočka M, Bauer J, Kubala E, Zycháčková K, Šedivá M, Gharibyar M, Kocáková I, Čmuchařová E, Vaňková M. Feasibility of implementation of the early tumor shrinkage as a potential predictive marker to daily clinical practice in patients with RAS wild type metastatic colorectal cancer, treated with cetuximab - a non-interventional observational study. Klin Onkol 2024; 38:110-117. [PMID: 38697819 DOI: 10.48095/ccko2024110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2024]
Abstract
BACKGROUND With the aim to show the feasibility of early tumor shrinkage (ETS) concept implementation into daily clinical practice in the Czech Republic, a non-interventional, multicentric, single arm, prospective study in real world set-up was performed. MATERIAL AND METHODS The study objectives were to explore the time interval from the treatment starting date to the date of the first radiographic control (TFRC) and evaluate the proportion of patients who achieved ≥ 20% tumor regression within the first 8 weeks of first-line therapy, in the real-world settings. RESULTS The medians of TFRC in all individual participating centers were > 12 weeks (range 14.0-36.4 weeks). TFRC ≤ 8 weeks was reported for only 3% of patients in the cohort with first-line therapy, and there were only 3 patients (1%) who achieved tumor regression of ≥ 20% by day 60 (8.6 weeks). CONCLUSION These findings indicate that the basic time parameter of ETS could not realistically be employed in routine oncology care of patients with metastatic colorectal cancer (mCRC) in the Czech Republic, unless there would be a strict request to perform TRFC by week 8 since the initiation of the therapy. In addition, the frequency of objective tumor response to first-line therapy with cetuximab + chemotherapy was evaluated. Based on the relative regression in the sum of diameters of measurable metastatic lesions, unconfirmed partial responses were achieved in 42.4 % and unconfirmed complete response in 8.6% of patients, altogether corresponding to the overall response rate of 51% with first-line therapy. The frequency of responses was higher among patients with left than right sided primary tumors. It seems that the regimen of cetuximab/FOLFOX might be more active in frontline therapy of right sided RAS wild type mCRC than cetuximab/FOLFIRI.
Collapse
|
2
|
Šamšulová V, Šedivá M, Kóňa J, Klaudiny J, Poláková M. A Comparison of the Antibacterial Efficacy of Carbohydrate Lipid-like (Thio)Ether, Sulfone, and Ester Derivatives against Paenibacillus larvae. Molecules 2023; 28:molecules28062516. [PMID: 36985490 PMCID: PMC10054558 DOI: 10.3390/molecules28062516] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 02/23/2023] [Accepted: 03/07/2023] [Indexed: 03/12/2023] Open
Abstract
Paenibacillus larvae is the causative agent of American foulbrood (AFB), the most serious bacterial disease affecting developing honeybee larvae and pupas. In this study, a library of 24 (thio)glycosides, glycosyl sulfones, 6-O-esters, and ethers derived from d-mannose, d-glucose, and d-galactose having C10 or C12 alkyl chain were evaluated for their antibacterial efficacy against two P. larvae strains. The efficacy of the tested compounds determined as minimal inhibitory concentrations (MICs) varied greatly. Generally, dodecyl derivatives were found to be more potent than their decylated analogs. Thioglycosides were more efficient than glycosides and sulfones. The activity of the 6-O-ether derivatives was higher than that of their ester counterparts. Seven derivatives with dodecyl chain linked (thio)glycosidically or etherically at C-6 showed high efficacy against both P. larvae strains (MICs ranged from 12.5 μM to 50 μM). Their efficacies were similar or much higher than those of selected reference compounds known to be active against P. larvae—lauric acid, monolaurin, and honeybee larval food components, 10-hydroxy-2-decenoic acid, and sebacic acid (MICs ranged from 25 μM to 6400 μM). The high efficacies of these seven derivatives suggest that they could increase the anti-P. larvae activity of larval food and improve the resistance of larvae to AFB disease through their application to honeybee colonies.
Collapse
Affiliation(s)
- Veronika Šamšulová
- Department of Organic Chemistry, Faculty of Science, Palacký University, 17. Listopadu 12, 779 00 Olomouc, Czech Republic
| | - Mária Šedivá
- Center for Glycomics, Institute of Chemistry, Slovak Academy of Sciences, Dúbravská Cesta 9, 84538 Bratislava, Slovakia
| | - Juraj Kóňa
- Center for Glycomics, Institute of Chemistry, Slovak Academy of Sciences, Dúbravská Cesta 9, 84538 Bratislava, Slovakia
- Medical Vision, Civic Research Association, Záhradnícka 4837/55, 82108 Bratislava, Slovakia
| | - Jaroslav Klaudiny
- Center for Glycomics, Institute of Chemistry, Slovak Academy of Sciences, Dúbravská Cesta 9, 84538 Bratislava, Slovakia
- Correspondence: (J.K.); (M.P.)
| | - Monika Poláková
- Center for Glycomics, Institute of Chemistry, Slovak Academy of Sciences, Dúbravská Cesta 9, 84538 Bratislava, Slovakia
- Correspondence: (J.K.); (M.P.)
| |
Collapse
|
3
|
Matiašovic J, Bzdil J, Papežíková I, Čejková D, Vasina E, Bizos J, Navrátil S, Šedivá M, Klaudiny J, Pikula J. Genomic analysis of Paenibacillus larvae isolates from the Czech Republic and the neighbouring regions of Slovakia. Res Vet Sci 2023; 158:34-40. [PMID: 36913910 DOI: 10.1016/j.rvsc.2023.03.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 01/16/2023] [Accepted: 03/05/2023] [Indexed: 03/10/2023]
Abstract
Paenibacillus larvae is the causative agent of American foulbrood (AFB), a devastating disease of honeybee larvae. In the Czech Republic, two large infested regions were recognised. This study aimed to analyse P. larvae strains occurring in the Czech Republic in the years 2016-2017 and to characterise the genetic structure of their population with the use of Enterobacterial Repetitive Intergenic Consensus genotyping (ERIC), multilocus sequence typing (MLST) and whole genome sequence (WGS) analysis. The results were complemented by the analysis of isolates collected in the year 2018 in areas of Slovakia located near the Czechia-Slovakia border. ERIC genotyping revealed that 78.9% of tested isolates belonged to the ERIC II genotype and 21.1% to ERIC I genotype. MLST showed six sequence types with ST10 and ST11 being the most frequent among isolates. Within six isolates we found discrepancies in correlations between MLST and ERIC genotypes. The use of MLST and WGS analysis of isolates revealed that each of the large infested geographic regions had its own dominating P. larvae strains. We assume that these strains represented primary sources of infection in the affected areas. In addition, the sporadic presence of strains identified by core genome analysis as genetically related was unveiled in geographically distant regions suggesting possible human-mediated transmission of AFB.
Collapse
Affiliation(s)
- Ján Matiašovic
- Veterinary Research Institute, Hudcova 296/70, 62100 Brno, Czech Republic.
| | - Jaroslav Bzdil
- Ptácy s.r.o., Valašská Bystřice 194, 756 27 Valašská Bystřice, Czech Republic
| | - Ivana Papežíková
- Department of Ecology and Diseases of Zoo Animals, Game, Fish and Bees, University of Veterinary Sciences Brno, Palackého tř. 1946/1, 612 42 Brno, Czech Republic
| | - Darina Čejková
- Veterinary Research Institute, Hudcova 296/70, 62100 Brno, Czech Republic; Department of Biomedical Engineering, Brno University of Technology, Technická 12, 616 00 Brno, Czech Republic
| | - Evgeniya Vasina
- Department of Ecology and Diseases of Zoo Animals, Game, Fish and Bees, University of Veterinary Sciences Brno, Palackého tř. 1946/1, 612 42 Brno, Czech Republic
| | - Jiří Bizos
- Veterinary Research Institute, Hudcova 296/70, 62100 Brno, Czech Republic
| | - Stanislav Navrátil
- Department of Ecology and Diseases of Zoo Animals, Game, Fish and Bees, University of Veterinary Sciences Brno, Palackého tř. 1946/1, 612 42 Brno, Czech Republic
| | - Mária Šedivá
- Institute of Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 84538 Bratislava, Slovakia
| | - Jaroslav Klaudiny
- Institute of Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 84538 Bratislava, Slovakia
| | - Jiří Pikula
- Department of Ecology and Diseases of Zoo Animals, Game, Fish and Bees, University of Veterinary Sciences Brno, Palackého tř. 1946/1, 612 42 Brno, Czech Republic
| |
Collapse
|
4
|
Kodríková R, Pakanová Z, Krchňák M, Šedivá M, Šesták S, Květoň F, Beke G, Šalingová A, Skalická K, Brennerová K, Jančová E, Baráth P, Mucha J, Nemčovič M. N-Glycoprofiling of SLC35A2-CDG: Patient with a Novel Hemizygous Variant. Biomedicines 2023; 11:biomedicines11020580. [PMID: 36831116 PMCID: PMC9952902 DOI: 10.3390/biomedicines11020580] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 02/01/2023] [Accepted: 02/14/2023] [Indexed: 02/18/2023] Open
Abstract
Congenital disorders of glycosylation (CDG) are a group of rare inherited metabolic disorders caused by a defect in the process of protein glycosylation. In this work, we present a comprehensive glycoprofile analysis of a male patient with a novel missense variant in the SLC35A2 gene, coding a galactose transporter that translocates UDP-galactose from the cytosol to the lumen of the endoplasmic reticulum and Golgi apparatus. Isoelectric focusing of serum transferrin, which resulted in a CDG type II pattern, was followed by structural analysis of transferrin and serum N-glycans, as well as the analysis of apolipoprotein CIII O-glycans by mass spectrometry. An abnormal serum N-glycoprofile with significantly increased levels of agalactosylated (Hex3HexNAc4-5 and Hex3HexNAc5Fuc1) and monogalactosylated (Hex4HexNAc4 ± NeuAc1) N-glycans was observed. Additionally, whole exome sequencing and Sanger sequencing revealed de novo hemizygous c.461T > C (p.Leu154Pro) mutation in the SLC35A2 gene. Based on the combination of biochemical, analytical, and genomic approaches, the set of distinctive N-glycan biomarkers was characterized. Potentially, the set of identified aberrant N-glycans can be specific for other variants causing SLC35A2-CDG and can distinguish this disorder from the other CDGs or other defects in the galactose metabolism.
Collapse
Affiliation(s)
- Rebeka Kodríková
- Institute of Chemistry, Centre of Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, 841 04 Bratislava, Slovakia
| | - Zuzana Pakanová
- Institute of Chemistry, Centre of Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, 841 04 Bratislava, Slovakia
- Correspondence:
| | - Maroš Krchňák
- Institute of Chemistry, Centre of Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, 841 04 Bratislava, Slovakia
| | - Mária Šedivá
- Institute of Chemistry, Centre of Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, 841 04 Bratislava, Slovakia
| | - Sergej Šesták
- Institute of Chemistry, Centre of Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, 841 04 Bratislava, Slovakia
| | - Filip Květoň
- Institute of Chemistry, Centre of Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, 841 04 Bratislava, Slovakia
| | - Gábor Beke
- Institute of Chemistry, Centre of Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, 841 04 Bratislava, Slovakia
- Department of Genomics and Biotechnology, Institute of Molecular Biology, Slovak Academy of Sciences, Dúbravská cesta 21, 845 51 Bratislava, Slovakia
| | - Anna Šalingová
- National Institute of Children’s Diseases, Center for Inherited Metabolic Disorders, Limbová 1, 833 40 Bratislava, Slovakia
| | - Katarína Skalická
- Laboratory of Clinical and Molecular Genetics, National Institute of Children’s Diseases, Limbová 1, 833 40 Bratislava, Slovakia
| | - Katarína Brennerová
- Department of Paediatrics, Faculty of Medicine of Comenius University and National Institute for Children’s Diseases, Limbová 1, 833 40 Bratislava, Slovakia
| | - Emília Jančová
- Department of Paediatrics, Faculty of Medicine of Comenius University and National Institute for Children’s Diseases, Limbová 1, 833 40 Bratislava, Slovakia
| | - Peter Baráth
- Institute of Chemistry, Centre of Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, 841 04 Bratislava, Slovakia
| | - Ján Mucha
- Institute of Chemistry, Centre of Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, 841 04 Bratislava, Slovakia
| | - Marek Nemčovič
- Institute of Chemistry, Centre of Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, 841 04 Bratislava, Slovakia
| |
Collapse
|
5
|
Laho M, Šedivá M, Majtán J, Klaudiny J. Fructose and Trehalose Selectively Enhance In Vitro Sporulation of Paenibacillus larvae ERIC I and ERIC II Strains. Microorganisms 2021; 9:225. [PMID: 33499318 PMCID: PMC7912100 DOI: 10.3390/microorganisms9020225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 01/13/2021] [Accepted: 01/20/2021] [Indexed: 11/16/2022] Open
Abstract
Paenibacillus larvae is a Gram-positive bacterium, the spores of which are the causative agent of the most destructive brood disease of honeybees, American foulbrood (AFB). Obtaining viable spores of pathogen strains is requisite for different studies concerning AFB. The aim of this work was to investigate the effects of five saccharides that may naturally occur in higher amounts in bee larvae on in vitro sporulation of P. larvae. The effect of individual saccharides at different concentrations on spore yields of P. larvae strains of epidemiologically important ERIC genotypes was examined in Columbia sheep blood agar (CSA) and MYPGP agar media. It was found that fructose in ERIC I and trehalose in ERIC II strains at concentrations in the range of 0.5-2% represent new sporulation factors that significantly enhanced the yields of viable spores in both media, mostly in a concentration-dependent manner. The enhancements in spore yield were mainly caused by improvements of the germination ability of the spores produced. Glucose, maltose and sucrose at 1% or 0.5% concentrations also supported sporulation but to a lower extent and not in all strains and media. Based on the knowledge gained, a novel procedure was proposed for the preparation of viable P. larvae spores with supposed improved quality for AFB research.
Collapse
Affiliation(s)
- Maroš Laho
- Institute of Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 84538 Bratislava, Slovakia; (M.L.); (M.Š.)
- Institute of Molecular Biology, Slovak Academy of Sciences, Dúbravská cesta 21, 84551 Bratislava, Slovakia;
| | - Mária Šedivá
- Institute of Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 84538 Bratislava, Slovakia; (M.L.); (M.Š.)
| | - Juraj Majtán
- Institute of Molecular Biology, Slovak Academy of Sciences, Dúbravská cesta 21, 84551 Bratislava, Slovakia;
| | - Jaroslav Klaudiny
- Institute of Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 84538 Bratislava, Slovakia; (M.L.); (M.Š.)
| |
Collapse
|
6
|
Šamšulová V, Poláková M, Horák R, Šedivá M, Kvapil L, Hradil P. Synthetic approach to novel glycosyltriazole-3-hydroxyquinolone conjugates and their antimicrobial properties. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.09.030] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
7
|
Šedivá M, Laho M, Kohútová L, Mojžišová A, Majtán J, Klaudiny J. 10-HDA, A Major Fatty Acid of Royal Jelly, Exhibits pH Dependent Growth-Inhibitory Activity Against Different Strains of Paenibacillus larvae. Molecules 2018; 23:molecules23123236. [PMID: 30544571 PMCID: PMC6320966 DOI: 10.3390/molecules23123236] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 12/04/2018] [Accepted: 12/05/2018] [Indexed: 12/19/2022] Open
Abstract
Paenibacillus larvae (P. larvae) is a bacterial pathogen causing American foulbrood (AFB), the most serious disease of honeybee larvae. The food of young larvae could play an important role in the resistance of larvae against AFB. It contains antibacterial substances produced by honeybees that may inhibit the propagation of the pathogen in larval midguts. In this study, we identified and investigated the antibacterial effects of one of these substances, trans-10-hydroxy-2-decenoic acid (10-HDA), against P. larvae strains including all Enterobacterial Repetitive Intergenic Consensus (ERIC) genotypes. Its inhibitory activities were studied by determining the minimum inhibitory concentrations (MICs). It was found that 10-HDA efficacy increases substantially with decreasing pH; up to 12-fold differences in efficacy were observed between pH = 5.5 and pH = 7.2. P. larvae strains showed different susceptibility to 10-HDA; up to 2.97-fold differences existed among various strains with environmentally important ERIC I and ERIC II genotypes. Germinating spores of the pathogen were generally more susceptible to 10-HDA than vegetative cells. Our findings suggest that 10-HDA could play significant role in conferring antipathogenic activity to larval food in the midguts of young larvae and contribute to the resistance of individual larvae to P. larvae.
Collapse
Affiliation(s)
- Mária Šedivá
- Institute of Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 845 38 Bratislava, Slovakia.
| | - Maroš Laho
- Institute of Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 845 38 Bratislava, Slovakia.
- Institute of Molecular Biology, Slovak Academy of Sciences, Dúbravská cesta 21, 845 51 Bratislava, Slovakia.
| | - Lenka Kohútová
- Institute of Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 845 38 Bratislava, Slovakia.
| | - Andrea Mojžišová
- Veterinary and Food Institute in Dolny Kubin, Janoškova 58, 02601 Dolný Kubín, Slovakia.
| | - Juraj Majtán
- Institute of Molecular Biology, Slovak Academy of Sciences, Dúbravská cesta 21, 845 51 Bratislava, Slovakia.
| | - Jaroslav Klaudiny
- Institute of Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 845 38 Bratislava, Slovakia.
| |
Collapse
|
8
|
Pichler P, Claes N, Mazza P, Zurawski B, Potocki P, Petru E, Šedivá M, Katolicka J, Lanza F, Fontaine C. Use of lipegfilgrastim in clinical practice for the prophylaxis of chemotherapy-induced neutropenia: interim results of pan-European non-interventional study. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw390.27] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|