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Kubiak-Szeligowska AB, Majchrzak M, Parniewski P. TRS-PCR profiles correlate with polymorphisms of the genomic o454-nlpD region, virulence factors repertoire, and phylogenetic groups among uropathogenic Escherichia coli strains isolated from patients from Lodz region, Poland. Gut Pathog 2024; 16:11. [PMID: 38395935 PMCID: PMC10885528 DOI: 10.1186/s13099-024-00603-1] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 02/06/2024] [Indexed: 02/25/2024] Open
Abstract
Extraintestinal urinary tract infections are mainly caused by uropathogenic strains of E. coli. UPECs are a heterogeneous group of strains possessing various genes associated with virulence traits. It was demonstrated that changes in the composition of the o454-nlpD region and genetic variation in the mutS-rpoS chromosomal region in ExPEC strains are correlated with their virulence, particularly in those with the pattern III o454-nlpD region and belonging to phylogenetic group B2. In this study, we investigated the presence and distribution of the o454-nlpD genomic polymorphism in our collection of 124 uropathogenic E. coli strains, examining the correlation of o454-nlpD region types with the virulence factors studied. Our findings revealed a positive association between certain virulence factors in UPEC strains and the presence of pattern III in the o454-nlpD region. Additionally, all these strains were classified under phylogenetic group B2. We also showed that the highly pathogenic group of E. coli identified by examining the polymorphism of the o454-nlpD region coincides with the highly pathogenic group of uropathogens we identified in the averaged TRS-PCR analysis.
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Affiliation(s)
| | - Marta Majchrzak
- Institute of Medical Biology, Polish Academy of Sciences, 106 Lodowa Str., 93-232, Lodz, Poland.
| | - Pawel Parniewski
- Institute of Medical Biology, Polish Academy of Sciences, 106 Lodowa Str., 93-232, Lodz, Poland.
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2
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Orłowska B, Majchrzak M, Didkowska A, Anusz K, Krajewska-Wędzina M, Zabost A, Brzezińska S, Kozińska M, Augustynowicz-Kopeć E, Urbańska K, Welz M, Parniewski P. Mycobacterial Interspersed Repeat Unit-Variable Number Tandem Repeat Typing of Mycobacterium avium Strains Isolated from the Lymph Nodes of Free-Living Carnivorous Animals in Poland. Pathogens 2023; 12:1184. [PMID: 37764992 PMCID: PMC10536629 DOI: 10.3390/pathogens12091184] [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: 08/23/2023] [Revised: 09/14/2023] [Accepted: 09/17/2023] [Indexed: 09/29/2023] Open
Abstract
Non-tuberculous mycobacteria (NTM) are ubiquitous organisms, of which some, especially those of the Mycobacterium avium complex (MAC), may be opportunistic animal and human pathogens. Infection with NTM can interfere with tuberculosis (TB) diagnosis and induce zoonoses, especially in immunocompromised individuals. Diseases caused by NTM have become more readily recognized; however, they are likely still underestimated. In this study, we identified and genotyped Mycobacterium avium strains that were isolated during TB monitoring among free-living carnivorous animals from southeastern Poland. In 2011-2020, lymph node samples from 192 such animals were tested for mycobacteria. A total of 41 isolates of M. avium strains were detected with the use of IS901, IS900, IS1245, and mycobacterial interspersed repeat unit-variable number tandem repeat (MIRU-VNTR) identification. Thirty-three were identified as M. avium subsp. avium. These strains were derived from 1 beech marten (Martes foina), 1 common buzzard (Buteo buteo), 2 European badgers (Meles meles), 3 wolves (Canis lupus), and 26 red foxes (Vulpes vulpes). One strain isolated from a wolf was identified as M. avium subsp. hominissuis. The results show the widespread occurrence of MAC bacilli in the studied environment and additionally comprise new data on the molecular characteristics of M. avium subspecies carried by free-living southeastern Polish carnivores.
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Affiliation(s)
- Blanka Orłowska
- Department of Food Hygiene and Public Health Protection, Institute of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), Nowoursynowska 159, 02-776 Warsaw, Poland; (A.D.); (K.A.)
| | - Marta Majchrzak
- Institute of Medical Biology, Polish Academy of Sciences, Lodowa 106, 93-232 Lodz, Poland
| | - Anna Didkowska
- Department of Food Hygiene and Public Health Protection, Institute of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), Nowoursynowska 159, 02-776 Warsaw, Poland; (A.D.); (K.A.)
| | - Krzysztof Anusz
- Department of Food Hygiene and Public Health Protection, Institute of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), Nowoursynowska 159, 02-776 Warsaw, Poland; (A.D.); (K.A.)
| | - Monika Krajewska-Wędzina
- Department of Microbiology, National Veterinary Research Institute, Aleja Partyzantów 57, 24-100 Puławy, Poland;
| | - Anna Zabost
- Department of Microbiology, National Tuberculosis Reference Laboratory, National Tuberculosis and Lung Diseases Research Institute, Płocka 26, 01-138 Warsaw, Poland; (A.Z.); (S.B.); (M.K.); (E.A.-K.)
| | - Sywia Brzezińska
- Department of Microbiology, National Tuberculosis Reference Laboratory, National Tuberculosis and Lung Diseases Research Institute, Płocka 26, 01-138 Warsaw, Poland; (A.Z.); (S.B.); (M.K.); (E.A.-K.)
| | - Monika Kozińska
- Department of Microbiology, National Tuberculosis Reference Laboratory, National Tuberculosis and Lung Diseases Research Institute, Płocka 26, 01-138 Warsaw, Poland; (A.Z.); (S.B.); (M.K.); (E.A.-K.)
| | - Ewa Augustynowicz-Kopeć
- Department of Microbiology, National Tuberculosis Reference Laboratory, National Tuberculosis and Lung Diseases Research Institute, Płocka 26, 01-138 Warsaw, Poland; (A.Z.); (S.B.); (M.K.); (E.A.-K.)
| | - Kaja Urbańska
- Department of Morphological Sciences, Division of Histology and Embryology, Institute of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), Nowoursynowska 159, 02-776 Warsaw, Poland;
| | - Mirosław Welz
- Provincial Veterinary Inspectorate, Piotra Ścigiennego 6a, 38-400 Krosno, Poland;
| | - Paweł Parniewski
- Institute of Medical Biology, Polish Academy of Sciences, Lodowa 106, 93-232 Lodz, Poland
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3
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Majchrzak M, Sakowski S, Waldmajer J, Parniewski P. New Genetic Markers Differentiating IPEC and ExPEC Pathotypes-A New Approach to Genome-Wide Analysis Using a New Bioinformatics Tool. Int J Mol Sci 2023; 24:ijms24054681. [PMID: 36902111 PMCID: PMC10002601 DOI: 10.3390/ijms24054681] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 02/08/2023] [Accepted: 02/23/2023] [Indexed: 03/06/2023] Open
Abstract
The increasingly expanding genomic databases generate the need for new tools for their processing and further use. In the paper, a bioinformatics tool, which is a search engine of microsatellite elements-trinucleotide repeat sequences (TRS) in files of FASTA type-is presented. An innovative approach was applied in the tool, which consists of connecting-within one search engine-both mapping of TRS motifs and extracting sequences that are found between the mapped TRS motifs. Accordingly, we present hereby the tool called TRS-omix, which comprises a new engine for searching information on genomes and enables generation of sets of sequences and their number, providing the basis for making comparisons between genomes. In our paper, we showed one of the possibilities of using the software. Using TRS-omix and other IT tools, we showed that we were able to extract sets of DNA sequences that can be assigned only to the genomes of the extraintestinal pathogenic Escherichia coli strains or to the genomes of the intestinal pathogenic Escherichia coli strains, as well as providing the basis for differentiation of the genomes/strains belonging to each of these clinically essential pathotypes.
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Affiliation(s)
- Marta Majchrzak
- Institute of Medical Biology, Polish Academy of Sciences, 106 Lodowa Str., 93-232 Lodz, Poland
| | - Sebastian Sakowski
- Faculty of Mathematics and Computer Science, University of Lodz, Banacha 22, 90-238 Lodz, Poland
- Centre for Data Analysis, Modelling and Computational Sciences, University of Lodz, Scheibler Family Avenue 2, 90-128 Lodz, Poland
- Correspondence: (S.S.); (P.P.); Tel.: +48-42-272-36-20 (P.P.); Fax: +48-42-27-23-630 (P.P.)
| | - Jacek Waldmajer
- Institute of Computer Science, University of Opole, Oleska 48, 45-052 Opole, Poland
| | - Pawel Parniewski
- Institute of Medical Biology, Polish Academy of Sciences, 106 Lodowa Str., 93-232 Lodz, Poland
- Correspondence: (S.S.); (P.P.); Tel.: +48-42-272-36-20 (P.P.); Fax: +48-42-27-23-630 (P.P.)
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Jarych D, Augustynowicz-Kopec E, Iwanska A, Parniewski P, Majchrzak M. Molecular analysis of Pseudomonas aeruginosa strains isolated from cystic fibrosis patients. Sci Rep 2021; 11:15460. [PMID: 34326452 PMCID: PMC8322141 DOI: 10.1038/s41598-021-95034-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 07/15/2021] [Indexed: 11/09/2022] Open
Abstract
Pseudomonas aeruginosa is a severe bacterial pathogen. Due to the genetic flexibility among strains, chronic airways infection can lead to mortality among cystic fibrosis (CF) patients. It is essential to develop patient-specific therapy which will rely on phenotypic and genomic diversity. The primary objective of this study was to assess the genomic variability of P. aeruginosa strains, using two different molecular techniques for tracking the epidemiological transmissions. This study applied a multiple-locus variable-number tandem-repeat (VNTR) analysis (MLVA) for an efficient genotyping of clinical P. aeruginosa strains isolated from CF patients and compared results with a TRS-PCR typing. The percentage similarity analysis was performed using the categorical multi-state coefficient and UPGMA method. Based on the MLVA and TRS-PCR group assessment, 43 P. aeruginosa strains/variants were detected among the 63 clinical isolates from eight CF patients. The study of P. aeruginosa isolates has revealed that during chronic bacterial infections, CF patients harbor different P. aeruginosa strains or variants within the same host over the years. P. aeruginosa genotypes diversity may result from infection with several strains and result from a microevolution process of an initially acquired strain. The TRS-PCR method proposed in this work can complement the MLVA scheme. It can also be used as a preliminary method for genetic typing of P. aeruginosa isolates in CF patients.
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Affiliation(s)
| | - Ewa Augustynowicz-Kopec
- Department of Microbiology, National Tuberculosis and Lung Diseases Research Institute, Warsaw, Poland
| | - Agnieszka Iwanska
- Department of Microbiology, National Tuberculosis and Lung Diseases Research Institute, Warsaw, Poland
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Ledwoń A, Miąsko M, Napiórkowska A, Augustynowicz-Kopeć E, Parniewski P, Majchrzak M, Czopowicz M, Adamczyk K, Bonecka J, Szeleszczuk P. Case Study and Attempt of Treatment of Mycobacteriosis Caused by Mycobacterium avium in a Parental Flock of Meat-Breed Pigeons. Avian Dis 2021; 64:335-342. [PMID: 33205182 DOI: 10.1637/aviandiseases-d-19-00148] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 08/19/2019] [Accepted: 02/10/2020] [Indexed: 11/05/2022]
Abstract
Mycobacteriosis caused by Mycobacterium avium subsp. avium was observed in a parental loft of 70 meat-breed pigeons. It was decided to undertake treatment as the birds represented a substantial value to the owner. A multiagent therapy using azithromycin, marbofloxacin, and ethambutol was administered. After 4 mo of therapy, the desired results were not obtained. At the end of treatment, the birds were in poor general condition, with white blood cells above 20 g/L, and after clutching, 2-yr-old and older birds were euthanatized. Overall, postmortem lesions were found in 17 out of 49 necropsied individuals. Slide agglutination tests with a M. avium subsp. avium lysate were conducted in all examined pigeons. In 28 pigeons, blood count was conducted once a month during therapy, while in 24 pigeons, a tuberculin sensitivity test was conducted before the planned euthanatization. The tuberculin sensitivity test did not prove useful in the diagnosis of ill individuals. Slide agglutination yielded positive results in only four birds, all of which also had postmortem lesions. Blood count in a large number of cases allowed distinguishing between ill and healthy individuals, which was used for subsequent selection. The comparison of cultured strains with the (CCG)4-based PCR method showed the variation of M. avium isolates up to a maximum of 30%. The described case proves that the treatment of mycobacteriosis in pigeon flocks is not effective, mainly due to the high resistance to M. avium subsp. avium. In addition, therapy may contribute to an even greater increase in mycobacterial resistance to antibiotics, which may pose a potential risk to public health.
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Affiliation(s)
- Aleksandra Ledwoń
- Department of Pathology and Veterinary Diagnostics, Warsaw University of Life Sciences, 159c Nowoursynowska St. 02-776, Warsaw, Poland
| | - Maciej Miąsko
- Department of Genetics and Animal Breeding, Warsaw University of Life Sciences, 8 Ciszewskiego St. 02-786, Warsaw, Poland
| | - Agnieszka Napiórkowska
- Department of Microbiology, National Research Institute of Tuberculosis and Lung Diseases, 26 Plocka St. 01-138, Warsaw, Poland
| | - Ewa Augustynowicz-Kopeć
- Department of Microbiology, National Research Institute of Tuberculosis and Lung Diseases, 26 Plocka St. 01-138, Warsaw, Poland
| | - Paweł Parniewski
- Institute of Medical Biology PAS, 106 Lodowa Street, 93-232, Lodz, Poland
| | - Marta Majchrzak
- Institute of Medical Biology PAS, 106 Lodowa Street, 93-232, Lodz, Poland
| | - Michał Czopowicz
- Laboratory of Veterinary Epidemiology and Economics, Warsaw University of Life Sciences, 159c Nowoursynowska St. 02-776, Warsaw, Poland
| | - Krzysztof Adamczyk
- Department of Pathology and Veterinary Diagnostics, Warsaw University of Life Sciences, 159c Nowoursynowska St. 02-776, Warsaw, Poland
| | - Joanna Bonecka
- Department of Small Animal Diseases with Clinic, Warsaw University of Life Sciences, 159c Nowoursynowska, 02-776, Warsaw, Poland
| | - Piotr Szeleszczuk
- Department of Pathology and Veterinary Diagnostics, Warsaw University of Life Sciences, 159c Nowoursynowska St. 02-776, Warsaw, Poland
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6
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Majchrzak M, Kubiak-Szeligowska AB, Jarych D, Parniewski P. Numerical interpretation of TRS-PCR profiling results for Escherichia coli strains isolated from patients with bacteriuria in Lodz region, Poland. Mol Biol Rep 2019; 46:5543-5553. [PMID: 31240528 DOI: 10.1007/s11033-019-04932-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 02/21/2019] [Accepted: 06/20/2019] [Indexed: 10/26/2022]
Abstract
With the multiplicity of existing methods to track E. coli infections, it still seems necessary to seek new, better and/or complementary ways for epidemiological investigations. Particularly, fast, cheap, effective and reproducible methods providing easily comparable results are needed. Our previous studies showed that the use of TRS-PCR is an effective molecular tool in E. coli epidemiology. In this paper, we have developed a unique classification scheme in which an individual TRS-PCR pattern is assigned a numerical value. This approach allows for rapid interpretation of the results obtained from several similarity dendrograms. Using this approach, based on CAC-PCR, GTG-PCR and CGG-PCR, we obtained 52, 86 and 99 different numerical types for the 124 analyzed uropathogenic E. coli strains, respectively. This allowed for the identification of 121 unique isolates differing in at least one TRS-PCR class. In this approach, we got numerical results, easy to sort and interpret, allowing easier analysis of these strains.
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Affiliation(s)
- Marta Majchrzak
- Institute of Medical Biology, Polish Academy of Sciences, 106 Lodowa Str, 93-232, Lodz, Poland
| | | | - Dariusz Jarych
- Institute of Medical Biology, Polish Academy of Sciences, 106 Lodowa Str, 93-232, Lodz, Poland
| | - Pawel Parniewski
- Institute of Medical Biology, Polish Academy of Sciences, 106 Lodowa Str, 93-232, Lodz, Poland.
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7
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Majchrzak M, Drela K, Andrzejewska A, Rogujski P, Figurska S, Fiedorowicz M, Walczak P, Janowski M, Lukomska B, Stanaszek L. SOD1/Rag2 Mice with Low Copy Number of SOD1 Gene as a New Long-Living Immunodeficient Model of ALS. Sci Rep 2019; 9:799. [PMID: 30692571 PMCID: PMC6349855 DOI: 10.1038/s41598-018-37235-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Accepted: 11/30/2018] [Indexed: 02/07/2023] Open
Abstract
The most recent research concerning amyotrophic lateral sclerosis (ALS) emphasizes the role of glia in disease development. Thus, one can suspect that the effective therapeutic strategy in treatment of ALS would be replacement of defective glia. One of the basic problems with human glial progenitors (hGRPs) replacement strategies is the time needed for the cells to become fully functional in vivo. The lifespan of most popular high copy number SOD1 mutant mice might be too short to acknowledge benefits of transplanted cells. We focused on developing immunodeficient rag2-/- model of ALS with lower number of transgene copies and longer lifespan. The obtained hSOD1/rag2 double mutant mice have been characterized. QPCR analysis revealed that copy number of hSOD1 transgene varied in our colony (4-8 copies). The difference in transgene copy number may be translated to significant impact on the lifespan. The death of long- and short-living hSOD1/rag2 mice is preceded by muscular weakness as early as one month before death. Importantly, based on magnetic resonance imaging we identified that mutant mice demonstrated abnormalities within the medullar motor nuclei. To conclude, we developed long-living double mutant hSOD1/rag2 mice, which could be a promising model for testing therapeutic utility of human stem cells.
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Affiliation(s)
- M Majchrzak
- NeuroRepair Department, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
| | - K Drela
- NeuroRepair Department, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
| | - A Andrzejewska
- NeuroRepair Department, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
| | - P Rogujski
- NeuroRepair Department, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
| | - S Figurska
- Laboratory for Genetically Modified Animals, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
| | - M Fiedorowicz
- Department of Experimental Pharmacology and Small Animal Magnetic Resonance Imaging Laboratory, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
| | - P Walczak
- Johns Hopkins University School of Medicine, Institute for Cell Engineering, Division of MR Research, The Russell H. Morgan Department of Radiology and Radiological Science, Baltimore, MD, USA
- Department of Neurosurgery, School of Medicine, Collegium Medicum, University of Warmia and Mazury, Olsztyn, 10-719, Poland
| | - M Janowski
- NeuroRepair Department, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
- Johns Hopkins University School of Medicine, Institute for Cell Engineering, Division of MR Research, The Russell H. Morgan Department of Radiology and Radiological Science, Baltimore, MD, USA
| | - B Lukomska
- NeuroRepair Department, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
| | - L Stanaszek
- NeuroRepair Department, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland.
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Bartoszek K, Majchrzak M, Sakowski S, Kubiak-Szeligowska AB, Kaj I, Parniewski P. Predicting pathogenicity behavior in Escherichia coli population through a state dependent model and TRS profiling. PLoS Comput Biol 2018; 14:e1005931. [PMID: 29385125 PMCID: PMC5809097 DOI: 10.1371/journal.pcbi.1005931] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 02/12/2018] [Accepted: 12/14/2017] [Indexed: 12/23/2022] Open
Abstract
The Binary State Speciation and Extinction (BiSSE) model is a branching process based model that allows the diversification rates to be controlled by a binary trait. We develop a general approach, based on the BiSSE model, for predicting pathogenicity in bacterial populations from microsatellites profiling data. A comprehensive approach for predicting pathogenicity in E. coli populations is proposed using the state-dependent branching process model combined with microsatellites TRS-PCR profiling. Additionally, we have evaluated the possibility of using the BiSSE model for estimating parameters from genetic data. We analyzed a real dataset (from 251 E. coli strains) and confirmed previous biological observations demonstrating a prevalence of some virulence traits in specific bacterial sub-groups. The method may be used to predict pathogenicity of other bacterial taxa.
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Affiliation(s)
| | - Marta Majchrzak
- Institute of Medical Biology, Polish Academy of Sciences, Lodz, Poland
| | - Sebastian Sakowski
- Faculty of Mathematics and Computer Science, University of Lodz, Lodz, Poland
| | | | - Ingemar Kaj
- Department of Mathematics, Uppsala University, Uppsala, Sweden
| | - Pawel Parniewski
- Institute of Medical Biology, Polish Academy of Sciences, Lodz, Poland
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Walczak M, Januszewski R, Majchrzak M, Kubicki M, Dudziec B, Marciniec B. Unusual cis and trans architecture of dihydrofunctional double-decker shaped silsesquioxane and synthesis of its ethyl bridged π-conjugated arene derivatives. NEW J CHEM 2017. [DOI: 10.1039/c7nj00255f] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An original family of well-defined molecular and macromolecular double-decker silsesquioxane derivatives with ethyl bridged π-conjugated arenes is obtained via hydrosilylation reaction.
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Affiliation(s)
- M. Walczak
- Faculty of Chemistry
- Adam Mickiewicz University in Poznan
- 61-614 Poznan
- Poland
| | - R. Januszewski
- Faculty of Chemistry
- Adam Mickiewicz University in Poznan
- 61-614 Poznan
- Poland
| | - M. Majchrzak
- Faculty of Chemistry
- Adam Mickiewicz University in Poznan
- 61-614 Poznan
- Poland
| | - M. Kubicki
- Faculty of Chemistry
- Adam Mickiewicz University in Poznan
- 61-614 Poznan
- Poland
| | - B. Dudziec
- Faculty of Chemistry
- Adam Mickiewicz University in Poznan
- 61-614 Poznan
- Poland
| | - B. Marciniec
- Faculty of Chemistry
- Adam Mickiewicz University in Poznan
- 61-614 Poznan
- Poland
- Centre for Advanced Technologies
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10
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Silarska E, Majchrzak M, Marciniec B, Trzeciak A. Efficient functionalization of olefins by arylsilanes catalyzed by palladium anionic complexes. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.molcata.2016.07.023] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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11
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Rachuta K, Bayda M, Majchrzak M, Koput J, Marciniak B. Unusual emission properties of the selected organosilicon compounds containing a styryl-carbazole chromophore: inversion of the singlet excited states. Phys Chem Chem Phys 2017; 19:11698-11705. [DOI: 10.1039/c7cp01292f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The presence of the silicon atom in a trimethylsilyl-styryl-carbazole derivative induced the inversion of the lowest excited states in polar solvents.
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Affiliation(s)
- K. Rachuta
- Faculty of Chemistry
- Adam Mickiewicz University
- 61-614 Poznan
- Poland
| | - M. Bayda
- Faculty of Chemistry
- Adam Mickiewicz University
- 61-614 Poznan
- Poland
- Center of Advanced Technologies
| | - M. Majchrzak
- Faculty of Chemistry
- Adam Mickiewicz University
- 61-614 Poznan
- Poland
| | - J. Koput
- Faculty of Chemistry
- Adam Mickiewicz University
- 61-614 Poznan
- Poland
| | - B. Marciniak
- Faculty of Chemistry
- Adam Mickiewicz University
- 61-614 Poznan
- Poland
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Andre E, Yaniz-Galende E, Hamilton C, Dusting GJ, Hellen N, Poulet CE, Diez Cunado M, Smits AM, Lowe V, Eckardt D, Du Pre B, Sanz Ruiz R, Moerkamp AT, Tribulova N, Smani T, Liskova YV, Greco S, Guzzolino E, Franco D, Lozano-Velasco E, Knorr M, Pavoine C, Bukowska A, Van Linthout S, Miteva K, Sulzgruber P, Latet SC, Portnychenko A, Cannavo A, Kamilova U, Sagach VF, Santin Y, Octavia Y, Haller PM, Octavia Y, Rubies C, Dei Zotti F, Wong KHK, Gonzalez Miqueo A, Kruithof BPT, Kadur Nagaraju C, Shaposhnikova Y, Songia P, Lindner D, Wilson C, Benzoni P, Fabbri A, Campostrini G, Jorge E, Casini S, Mengarelli I, Nikolov A, Bublikov DS, Kheloufi M, Rubies C, Walker RE, Van Dijk RA, Posthuma JJ, Dumitriu IE, Karshovska E, Sakic A, Alexandru N, Martin-Lorenzo M, Molica F, Taylor RF, Mcarthur L, Crocini C, Matsuyama TA, Mazzoni L, Lin WK, Owen TJ, Scigliano M, Sheehan A, Bezerra Gurgel AR, Bromage DI, Kiss A, Ikeda G, Pickard JMJ, Wirth G, Casos K, Khudiakov A, Nistal JF, Ferrantini C, Park SJ, Di Maggio S, Gentile F, Dini L, Buyandelger B, Larrasa-Alonso J, Schirmer I, Chin SH, Cimiotti D, Martini H, Hohensinner PJ, Garabito M, Zeni F, Licholai S, De Bortoli M, Sivitskaya L, Viczenczova C, Rainer PP, Smith LE, Suna G, Gambardella J, Cozma A, De Gonzalo Calvo D, Scoditti E, Clark BJ, Mansfield C, Eckardt D, Gomez L, Llucia-Valldeperas A, De Pauw A, Porporato P, Bouzin C, Draoui N, Sonveaux P, Balligand JL, Mougenot N, Formicola L, Nadaud S, Dierick F, Hajjar RJ, Marazzi G, Sassoon D, Hulot JS, Zamora VR, Burton FL, Macquaide N, Smith GL, Hernandez D, Sivakumaran P, Millard R, Wong RCB, Pebay A, Shepherd RK, Lim SY, Owen T, Jabbour RJ, Kloc M, Kodagoda T, Denning C, Harding SE, Ramos S, Terracciano C, Gorelik J, Wei K, Bushway P, Ruiz-Lozano P, Mercola M, Moerkamp AT, Vegh AMD, Dronkers E, Lodder K, Van Herwaarden T, Goumans MJ, Pellet-Many C, Zachary I, Noack K, Bosio A, Feyen DAM, Demkes EJ, Dierickx PJ, Doevendans PA, Vos MA, Van Veen AAB, Van Laake LW, Fernandez Santos ME, Suarez Sancho S, Fuentes Arroyo L, Plasencia Martin V, Velasco Sevillano P, Casado Plasencia A, Climent AM, Guillem M, Atienza Fernandez F, Fernandez-Aviles F, Dingenouts CKE, Lodder K, Kruithof BPT, Van Herwaarden T, Vegh AMD, Goumans MJ, Smits AM, Knezl V, Szeiffova Bacova B, Egan Benova T, Viczenczova C, Goncalvesova E, Slezak J, Calderon-Sanchez E, Diaz I, Ordonez A, Salikova SP, Zaccagnini G, Voellenkle C, Sadeghi I, Maimone B, Castelvecchio S, Gaetano C, Menicanti L, Martelli F, Hatcher C, D'aurizio R, Groth M, Baugmart M, Mercatanti A, Russo F, Mariani L, Magliaro C, Pitto L, Lozano-Velasco E, Jodar-Garcia A, Galiano-Torres J, Lopez-Navarrete I, Aranega A, Wagensteen R, Quesada A, Aranega A, Franco D, Finger S, Karbach S, Kossmann S, Muenzel T, Wenzel P, Keck M, Mougenot N, Favier S, Fuand A, Atassi F, Barbier C, Lompre AM, Hulot JS, Nikonova Y, Pluteanu F, Kockskaemper J, Chilukoti RK, Wolke C, Lendeckel U, Gardemann A, Goette A, Miteva K, Pappritz K, Mueller I, El-Shafeey M, Ringe J, Tschoepe C, Pappritz K, El-Shafeey M, Ringe J, Tschoepe C, Van Linthout S, Koller L, Richter B, Blum S, Koprak M, Huelsmann M, Pacher R, Goliasch G, Wojta J, Niessner A, Van Herck PL, Claeys MJ, Haine SE, Lenders GD, Miljoen HP, Segers VF, Vandendriescche TR, Hoymans VY, Vrints CJ, Lapikova-Bryhinska T, Gurianova V, Portnichenko H, Vasylenko M, Zapara Y, Portnichenko V, Liccardo D, Lymperopoulos A, Santangelo M, Leosco D, Koch WJ, Ferrara N, Rengo G, Alieva T, Rasulova Z, Masharipova D, Dorofeyeva NA, Drachuk KO, Sicard P, Yucel Y, Dutaur M, Vindis C, Parini A, Mialet-Perez J, Van Deel ED, De Boer M, De Waard MC, Duncker DJ, Nagel F, Inci M, Santer D, Hallstroem S, Podesser BK, Kararigas G, De Boer M, Kietadisorn R, Swinnen M, Duimel H, Verheyen F, Chrifi I, Brandt MM, Cheng C, Janssens S, Moens AL, Duncker DJ, Batlle M, Dantas AP, Sanz M, Sitges M, Mont L, Guasch E, Lobysheva I, Beauloye C, Balligand JL, Vanhoutte PM, Tang EHC, Beaumont J, Lopez B, Ravassa S, Hermida N, Valencia F, Gomez-Doblas JJ, San Jose G, De Teresa E, Diez J, Van De Merbel AF, Kruithof-De Julio M, Goumans MJ, Claus P, Dries E, Angelo Singh A, Vermeulen K, Roderick HL, Sipido KR, Driesen RB, Ilchenko I, Bobronnikova L, Myasoedova V, Alamanni F, Tremoli E, Poggio P, Becher PM, Gotzhein F, Klingel K, Blankenberg S, Westermann D, Zi M, Cartwright E, Campostrini G, Bonzanni M, Milanesi R, Bucchi A, Baruscotti M, Difrancesco D, Barbuti A, Fantini M, Wilders R, Severi S, Benzoni P, Dell' Era P, Serzanti M, Olesen MS, Muneretto C, Bisleri G, Difrancesco D, Baruscotti M, Bucchi A, Barbuti A, Amoros-Figueras G, Raga S, Campos B, Alonso-Martin C, Rodriguez-Font E, Vinolas X, Cinca J, Guerra JM, Mengarelli I, Schumacher CA, Veldkamp MW, Verkerk AO, Remme CA, Veerman C, Guan K, Stauske M, Tan H, Barc J, Wilde A, Verkerk A, Bezzina C, Tsinlikov I, Tsinlikova I, Nicoloff G, Blazhev A, Garev A, Andrienko AV, Lychev VG, Vorobova EN, Anchugina DA, Vion AC, Hammoutene A, Poisson J, Dupont N, Souyri M, Tedgui A, Codogno P, Boulanger CM, Rautou PE, Dantas AP, Batlle M, Guasch E, Torres M, Montserrat JM, Almendros I, Mont L, Austin CA, Holt CM, Rijs K, Wezel A, Hamming JF, Kolodgie FD, Virmani R, Schaapherder AF, Lindeman JHN, Posma JJN, Van Oerle R, Spronk HMH, Ten Cate H, Dinkla S, Kaski JC, Schober A, Chaabane C, Ambartsumian N, Grigorian M, Bochaton-Piallat ML, Dragan E, Andrei E, Niculescu L, Georgescu A, Gonzalez-Calero L, Maroto AS, Martinez PJ, Heredero A, Aldamiz-Echevarria G, Vivanco F, Alvarez-Llamas G, Meens MJ, Pelli G, Foglia B, Scemes E, Kwak BR, Caldwell JL, Eisner DA, Dibb KM, Trafford AW, Chilton L, Smith GL, Nicklin SA, Coppini R, Ferrantini C, Yan P, Loew LM, Poggesi C, Cerbai E, Pavone FS, Sacconi L, Tanaka H, Ishibashi-Ueda H, Takamatsu T, Coppini R, Ferrantini C, Gentile F, Pioner JM, Santini L, Sartiani L, Bargelli V, Poggesi C, Mugelli A, Cerbai E, Maciejewska M, Bolton EL, Wang Y, O'brien F, Ruas M, Lei M, Sitsapesan R, Galione A, Terrar DA, Smith JG, Garcia D, Barriales-Villa R, Monserrat L, Harding SE, Denning C, Marston SB, Watson S, Tkach S, Faggian G, Terracciano CM, Perbellini F, Eiros Zamora J, Papadaki M, Messer A, Marston S, Gould I, Johnston A, Dunne M, Smith G, Kemi OJ, Pillai M, Davidson SM, Yellon DM, Tratsiakovich Y, Jang J, Gonon AT, Pernow J, Matoba T, Koga J, Egashira K, Burke N, Davidson SM, Yellon DM, Korpisalo P, Hakkarainen H, Laidinen S, Yla-Herttuala S, Ferrer-Curriu G, Perez M, Permanyer E, Blasco-Lucas A, Gracia JM, Castro MA, Barquinero J, Galinanes M, Kostina D, Kostareva A, Malashicheva A, Merino D, Ruiz L, Gomez J, Juarez C, Gil A, Garcia R, Hurle MA, Coppini R, Pioner JM, Gentile F, Mazzoni L, Rossi A, Tesi C, Belardinelli L, Olivotto I, Cerbai E, Mugelli A, Poggesi C, Eun-Ji EJ, Lim BK, Choi DJ, Milano G, Bertolotti M, De Marchis F, Zollo F, Sommariva E, Capogrossi MC, Pompilio G, Bianchi ME, Raucci A, Pioner JM, Coppini R, Scellini B, Tardiff J, Tesi C, Poggesi C, Ferrantini C, Mazzoni L, Sartiani L, Coppini R, Diolaiuti L, Ferrari P, Cerbai E, Mugelli A, Mansfield C, Luther P, Knoell R, Villalba M, Sanchez-Cabo F, Lopez-Olaneta MM, Ortiz-Sanchez P, Garcia-Pavia P, Lara-Pezzi E, Klauke B, Gerdes D, Schulz U, Gummert J, Milting H, Wake E, Kocsis-Fodor G, Brack KE, Ng GA, Kostareva A, Smolina N, Majchrzak M, Moehner D, Wies A, Milting H, Stehle R, Pfitzer G, Muegge A, Jaquet K, Maggiorani D, Lefevre L, Dutaur M, Mialet-Perez J, Parini A, Cussac D, Douin-Echinard V, Ebenbauer B, Kaun C, Prager M, Wojta J, Rega-Kaun G, Costa G, Onetti Y, Jimenez-Altayo F, Vila E, Dantas AP, Milano G, Bertolotti M, Scopece A, Piacentini L, Bianchi ME, Capogrossi MC, Pompilio G, Colombo G, Raucci A, Blaz M, Kapelak B, Sanak M, Bauce B, Calore C, Lorenzon A, Calore M, Poloni G, Mazzotti E, Rigato I, Daliento L, Basso C, Thiene G, Melacini P, Corrado D, Rampazzo A, Danilenko NG, Vaikhanskaya TG, Davydenko OG, Szeiffova Bacova B, Kura B, Egan Benova T, Yin CH, Kukreja R, Slezak J, Tribulova N, Lee DI, Sorge M, Glabe C, Paolocci N, Guarnieri C, Tomaselli GF, Kass DA, Van Eyk JE, Agnetti G, Cordwell SJ, White MY, Wojakowski W, Lynch M, Barallobre-Barreiro J, Yin X, Mayr U, White S, Jahingiri M, Hill J, Mayr M, Sorriento D, Ciccarelli M, Fiordelisi A, Campiglia P, Trimarco B, Iaccarino G, Sitar Taut AV, Schiau S, Orasan O, Halloumi W, Negrean V, Zdrenghea D, Pop D, Van Der Meer RW, Rijzewijk LJ, Smit JWA, Revuelta-Lopez E, Nasarre L, Escola-Gil JC, Lamb HJ, Llorente-Cortes V, Pellegrino M, Massaro M, Carluccio MA, Calabriso N, Wabitsch M, Storelli C, De Caterina R, Church SJ, Callagy S, Begley P, Kureishy N, Mcharg S, Bishop PN, Unwin RD, Cooper GJS, Mawad D, Perbellini F, Tonkin J, Bello SO, Simonotto JD, Lyon AR, Stevens MM, Terracciano CM, Harding SE, Kernbach M, Czichowski V, Bosio A, Fuentes L, Hernandez-Redondo I, Guillem MS, Fernandez ME, Sanz R, Atienza F, Climent AM, Fernandez-Aviles F, Soler-Botija C, Prat-Vidal C, Galvez-Monton C, Roura S, Perea-Gil I, Bragos R, Bayes-Genis A. Poster session 1Cell growth, differentiation and stem cells - Heart72Understanding the metabolism of cardiac progenitor cells: a first step towards controlling their proliferation and differentiation?73Expression of pw1/peg3 identifies a new cardiac adult stem cell population involved in post-myocardial infarction remodeling74Long-term stimulation of iPS-derived cardiomyocytes using optogenetic techniques to promote phenotypic changes in E-C coupling75Benefits of electrical stimulation on differentiation and maturation of cardiomyocytes from human induced pluripotent stem cells76Constitutive beta-adrenoceptor-mediated cAMP production controls spontaneous automaticity of human induced pluripotent stem cell-derived cardiomyocytes77Formation and stability of T-tubules in cardiomyocytes78Identification of miRNAs promoting human cardiomyocyte proliferation by regulating Hippo pathway79A direct comparison of foetal to adult epicardial cell activation reveals distinct differences relevant for the post-injury response80Role of neuropilins in zebrafish heart regeneration81Highly efficient immunomagnetic purification of cardiomyocytes derived from human pluripotent stem cells82Cardiac progenitor cells posses a molecular circadian clock and display large 24-hour oscillations in proliferation and stress tolerance83Influence of sirolimus and everolimus on bone marrow-derived mesenchymal stem cell biology84Endoglin is important for epicardial behaviour following cardiac injuryCell death and apoptosis - Heart87Ultrastructural alterations reflecting Ca2+ handling and cell-to-cell coupling disorders precede occurrence of severe arrhythmias in intact animal heart88Urocortin-1 promotes cardioprotection through ERK1/2 and EPAC pathways: role in apoptosis and necrosis89Expression p38 MAPK and Cas-3 in myocardium LV of rats with experimental heart failure at melatonin and enalapril introductionTranscriptional control and RNA species - Heart92Accumulation of beta-amyloid 1-40 in HF patients: the role of lncRNA BACE1-AS93Role of miR-182 in zebrafish and mouse models of Holt-Oram syndrome94Mir-27 distinctly regulates muscle-enriched transcription factors and growth factors in cardiac and skeletal muscle cells95AF risk factors impair PITX2 expression leading to Wnt-microRNA-ion channel remodelingCytokines and cellular inflammation - Heart98Post-infarct survival depends on the interplay of monocytes, neutrophils and interferon gamma in a mouse model of myocardial Infarction99Inflammatory cd11b/c cells play a protective role in compensated cardiac hypertrophy by promoting an orai3-related pro-survival signal100Anti-inflammatory effects of endothelin receptor blockade in the atrial tissue of spontaneously hypertensive rats101Mesenchymal stromal cells reduce NLRP3 inflammasome activity in Coxsackievirus B3-induced myocarditis102Mesenchymal stromal cells modulate monocytes trafficking in Coxsackievirus B3-induced myocarditis103The impact of regulatory T lymphocytes on long-term mortality in patients with chronic heart failure104Temporal dynamics of dendritic cells after ST-elevation myocardial infarction relate with improvement of myocardial functionGrowth factors and neurohormones - Heart107Preconditioning of hypertrophied heart: miR-1 and IGF-1 crosstalk108Modulation of catecholamine secretion from human adrenal chromaffin cells by manipulation of G protein-coupled receptor kinase-2 activity109Evaluation of cyclic adenosin-3,5- monophosphate and neurohormones in patients with chronic heart failureNitric oxide and reactive oxygen species - Heart112Hydrogen sulfide donor inhibits oxidative and nitrosative stress, cardiohemodynamics disturbances and restores cNOS coupling in old rats113Role and mechanisms of action of aldehydes produced by monoamine oxidase A in cardiomyocyte death and heart failure114Exercise training has contrasting effects in myocardial infarction and pressure-overload due to different endothelial nitric oxide synthase regulation115S-Nitroso Human Serum Albumin dose-dependently leads to vasodilation and alters reactive hyperaemia in coronary arteries of an isolated mouse heart model116Modulating endothelial nitric oxide synthase with folic acid attenuates doxorubicin-induced cardiomyopathy119Effects of long-term very high intensity exercise on aortic structure and function in an animal model120Electron paramagnetic resonance spectroscopy quantification of nitrosylated hemoglobin (HbNO) as an index of vascular nitric oxide bioavailability in vivo121Deletion of repressor activator protein 1 impairs acetylcholine-induced relaxation due to production of reactive oxygen speciesExtracellular matrix and fibrosis - Heart124MicroRNA-19b is associated with myocardial collagen cross-linking in patients with severe aortic stenosis. Potential usefulness as a circulating biomarker125A new ex vivo model to study cardiac fibrosis126Heterogeneity of fibrosis and fibroblast differentiation in the left ventricle after myocardial infarction127Effect of carbohydrate metabolism degree compensation to the level of galectin-3 changes in hypertensive patients with chronic heart failure and type 2 diabetes mellitus128Statin paradox in association with calcification of bicuspid aortic valve interstitial cells129Cardiac function remains impaired despite reversible cardiac fibrosis after healed experimental viral myocarditisIon channels, ion exchangers and cellular electrophysiology - Heart132Identifying a novel role for PMCA1 (Atp2b1) in heart rhythm instability133Mutations of the caveolin-3 gene as a predisposing factor for cardiac arrhythmias134The human sinoatrial node action potential: time for a computational model135iPSC-derived cardiomyocytes as a model to dissect ion current alterations of genetic atrial fibrillation136Postextrasystolic potentiation in healthy and diseased hearts: effects of the site of origin and coupling interval of the preceding extrasystole137Absence of Nav1.8-based (late) sodium current in rabbit cardiomyocytes and human iPSC-CMs138hiPSC-derived cardiomyocytes from Brugada Syndrome patients without identified mutations do not exhibit cellular electrophysiological abnormalitiesMicrocirculation141Atherogenic indices, collagen type IV turnover and the development of microvascular complications- study in diabetics with arterial hypertension142Changes in the microvasculature and blood viscosity in women with rheumatoid arthritis, hypercholesterolemia and hypertensionAtherosclerosis145Shear stress regulates endothelial autophagy: consequences on endothelial senescence and atherogenesis146Obstructive sleep apnea causes aortic remodeling in a chronic murine model147Aortic perivascular adipose tissue displays an aged phenotype in early and late atherosclerosis in ApoE-/- mice148A systematic evaluation of the cellular innate immune response during the process of human atherosclerosis149Inhibition of Coagulation factor Xa increases plaque stability and attenuates the onset and progression of atherosclerotic plaque in apolipoprotein e-deficient mice150Regulatory CD4+ T cells from patients with atherosclerosis display pro-inflammatory skewing and enhanced suppression function151Hypoxia-inducible factor (HIF)-1alpha regulates macrophage energy metabolism by mediating miRNAs152Extracellular S100A4 is a key player of smooth muscle cell phenotypic transition: implications in atherosclerosis153Microparticles of healthy origins improve atherosclerosis-associated endothelial progenitor cell dysfunction via microRNA transfer154Arterial remodeling and metabolism impairment in early atherosclerosis155Role of pannexin1 in atherosclerotic plaque formationCalcium fluxes and excitation-contraction coupling158Amphiphysin II induces tubule formation in cardiac cells159Interleukin 1 beta regulation of connexin 43 in cardiac fibroblasts and the effects of adult cardiac myocyte:fibroblast co-culture on myocyte contraction160T-tubular electrical defects contribute to blunted beta-adrenergic response in heart failure161Beat-to-beat variability of intracellular Ca2+ dynamics of Purkinje cells in the infarct border zone of the mouse heart revealed by rapid-scanning confocal microscopy162The efficacy of late sodium current blockers in hypertrophic cardiomyopathy is dependent on genotype: a study on transgenic mouse models with different mutations163Synthesis of cADPR and NAADP by intracellular CD38 in heart: role in inotropic and arrhythmogenic effects of beta-adrenoceptor signalingContractile apparatus166Towards an engineered heart tissue model of HCM using hiPSC expressing the ACTC E99K mutation167Diastolic mechanical load delays structural and functional deterioration of ultrathin adult heart slices in culture168Structural investigation of the cardiac troponin complex by molecular dynamics169Exercise training restores myocardial and oxidative skeletal muscle function from myocardial infarction heart failure ratsOxygen sensing, ischaemia and reperfusion172A novel antibody specific to full-length stromal derived factor-1 alpha reveals that remote conditioning induces its cleavage by endothelial dipeptidyl peptidase 4173Attenuation of myocardial and vascular arginase activity by vagal nerve stimulation via a mechanism involving alpha-7 nicotinic receptor during cardiac ischemia and reperfusion174Novel nanoparticle-mediated medicine for myocardial ischemia-reperfusion injury simultaneously targeting mitochondrial injury and myocardial inflammation175Acetylcholine plays a key role in myocardial ischaemic preconditioning via recruitment of intrinsic cardiac ganglia176The role of nitric oxide and VEGFR-2 signaling in post ischemic revascularization and muscle recovery in aged hypercholesterolemic mice177Efficacy of ischemic preconditioning to protect the human myocardium: the role of clinical conditions and treatmentsCardiomyopathies and fibrosis180Plakophilin-2 haploinsufficiency leads to impaired canonical Wnt signaling in ARVC patient181Improved technique for customized, easier, safer and more reliable transverse aortic arch banding and debanding in mice as a model of pressure overload hypertrophy182Late sodium current inhibitors for the treatment of inducible obstruction and diastolic dysfunction in hypertrophic cardiomyopathy: a study on human myocardium183Angiotensin II receptor antagonist fimasartan has protective role of left ventricular fibrosis and remodeling in the rat ischemic heart184Role of High-Mobility Group Box 1 (HMGB1) redox state on cardiac fibroblasts activities and heart function after myocardial infarction185Atrial remodeling in hypertrophic cardiomyopathy: insights from mouse models carrying different mutations in cTnT186Electrophysiological abnormalities in ventricular cardiomyocytes from a Maine Coon cat with hypertrophic cardiomyopathy: effects of ranolazine187ZBTB17 is a novel cardiomyopathy candidate gene and regulates autophagy in the heart188Inhibition of SRSF4 in cardiomyocytes induces left ventricular hypertrophy189Molecular characterization of a novel cardiomyopathy related desmin frame shift mutation190Autonomic characterisation of electro-mechanical remodeling in an in-vitro leporine model of heart failure191Modulation of Ca2+-regulatory function by three novel mutations in TNNI3 associated with severe infant restrictive cardiomyopathyAging194The aging impact on cardiac mesenchymal like stromal cells (S+P+)195Reversal of premature aging markers after bariatric surgery196Sex-associated differences in vascular remodeling during aging: role of renin-angiotensin system197Role of the receptor for advanced glycation end-products (RAGE) in age dependent left ventricle dysfunctionsGenetics and epigenetics200hsa-miR-21-5p as a key factor in aortic remodeling during aneurysm formation201Co-inheritance of mutations associated with arrhythmogenic and hypertrophic cardiomyopathy in two Italian families202Lamin a/c hot spot codon 190: form various amino acid substitutions to clinical effects203Treatment with aspirin and atorvastatin attenuate cardiac injury induced by rat chest irradiation: Implication of myocardial miR-1, miR-21, connexin-43 and PKCGenomics, proteomics, metabolomics, lipidomics and glycomics206Differential phosphorylation of desmin at serines 27 and 31 drives the accumulation of preamyloid oligomers in heart failure207Potential role of kinase Akt2 in the reduced recovery of type 2 diabetic hearts subjected to ischemia / reperfusion injury208A proteomics comparison of extracellular matrix remodelling in porcine coronary arteries upon stent implantationMetabolism, diabetes mellitus and obesity211Targeting grk2 as therapeutic strategy for cancer associated to diabetes212Effects of salbutamol on large arterial stiffness in patients with metabolic syndrome213Circulating microRNA-1 and microRNA-133a: potential biomarkers of myocardial steatosis in type 2 diabetes mellitus214Anti-inflammatory nutrigenomic effects of hydroxytyrosol in human adipocytes - protective mechanisms of mediterranean diets in obesity-related inflammation215Alterations in the metal content of different cardiac regions within a rat model of diabetic cardiomyopathyTissue engineering218A novel conductive patch for application in cardiac tissue engineering219Establishment of a simplified and improved workflow from neonatal heart dissociation to cardiomyocyte purification and characterization220Effects of flexible substrate on cardiomyocytes cell culture221Mechanical stretching on cardiac adipose progenitors upregulates sarcomere-related genes. Cardiovasc Res 2016. [DOI: 10.1093/cvr/cvw135] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Majchrzak M, Kostera S, Grzelak M, Marciniec B, Kubicki M. An efficient catalytic synthesis and characterization of new styryl-ferrocenes and their trans-π-conjugated organosilicon materials. RSC Adv 2016. [DOI: 10.1039/c6ra00859c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
A selective and efficient catalytic method for the synthesis of new styryl-π-conjugated silyl-ferrocenes in a stereoselective manner is presented.
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Affiliation(s)
- M. Majchrzak
- Faculty of Chemistry
- Adam Mickiewicz University in Poznan
- 61-614 Poznan
- Poland
| | - S. Kostera
- Faculty of Chemistry
- Adam Mickiewicz University in Poznan
- 61-614 Poznan
- Poland
| | - M. Grzelak
- Faculty of Chemistry
- Adam Mickiewicz University in Poznan
- 61-614 Poznan
- Poland
| | - B. Marciniec
- Faculty of Chemistry
- Adam Mickiewicz University in Poznan
- 61-614 Poznan
- Poland
- Center for Advanced Technology
| | - M. Kubicki
- Faculty of Chemistry
- Adam Mickiewicz University in Poznan
- 61-614 Poznan
- Poland
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Żak P, Majchrzak M, Wilkowski G, Dudziec B, Dutkiewicz M, Marciniec B. Synthesis and characterization of functionalized molecular and macromolecular double-decker silsesquioxane systems. RSC Adv 2016. [DOI: 10.1039/c5ra20848c] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Synthesis and characterization of new, molecular and macromolecular DDSQ-based compounds functionalized by substituted styrenes and distyrylarenes (also with heteroatoms) in a stereoselective manner is presented.
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Affiliation(s)
- P. Żak
- Department of Organometallic Chemistry
- Faculty of Chemistry
- Adam Mickiewicz University in Poznan
- 61-614 Poznan
- Poland
| | - M. Majchrzak
- Department of Organometallic Chemistry
- Faculty of Chemistry
- Adam Mickiewicz University in Poznan
- 61-614 Poznan
- Poland
| | - G. Wilkowski
- Department of Organometallic Chemistry
- Faculty of Chemistry
- Adam Mickiewicz University in Poznan
- 61-614 Poznan
- Poland
| | - B. Dudziec
- Department of Organometallic Chemistry
- Faculty of Chemistry
- Adam Mickiewicz University in Poznan
- 61-614 Poznan
- Poland
| | - M. Dutkiewicz
- Centre for Advanced Technologies
- Adam Mickiewicz University in Poznan
- 61-614 Poznan
- Poland
| | - B. Marciniec
- Centre for Advanced Technologies
- Adam Mickiewicz University in Poznan
- 61-614 Poznan
- Poland
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Majchrzak M, Shannon K, Pleasant A, Cabe J, Evans A, Thomas H, Carmona R, Schultz J, Massani R. Canyon Ranch Institute Healthy Community: A Student-Centric, Integrative Health Model Advancing Health Literacy and Addressing Chronic Disease through a Hands-On Cooking and Nutrition Curriculum. J Acad Nutr Diet 2015. [DOI: 10.1016/j.jand.2015.06.347] [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: 11/16/2022]
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Wołkowicz T, Januszkiewicz A, Chróst A, Wolaniuk N, Kubiak AB, Majchrzak M, Szych J, Parniewski P. Usefulness of the (GTG)4-PCR for typing of monophasic Salmonella enterica isolates with antigenic shame l,4,[5],12:i:-. Med Dosw Mikrobiol 2015; 67:155-164. [PMID: 27019909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
INTRODUCTION Monophasic Salmonella enterica strains presenting the antigenic shame 1,4,[5],12:i:- are becoming more prevalent. Accurate identification of such strains is hard with routine using biochemical and serological tests. Such strains can be identified with molecular tests. In this study we have tested the usefulness of(GTG)4-PCR for the diagnostic of such monophasic strains. This usefulness of this method was previously confirmed for genoserotyping of S. Enterica, Typhimurium, Infantis, Virchow, Hadar, Newport and Anatum. MATERIALS AND METHODS 76 strains with antigenic shame l,4,[5],12:i:-, isolated in Poland in years 2007-12 were tested. Additionally (GTG)4-PCR patterns were obtained for reference strains of serotypes S. Lagos, S. Agama, S. Farsta, S. Tsevie, S. Glocester and S. Tumodi. (GTG)4-PCR was performed with DreamTaq DNA polymerase. Obtained patterns were analysed with BioNumerics software. RESULTS No pattern specific for monophasic pattern was identified. Additionally it was also impossible to differentiate patterns obtained for S. Typhimurium, S. Farsta, S. Tsevie and S. Glocester. Only reference strains of serotypes S. Tumodi, Farsta and Agama has the distinguishable patterns of (GTG)4-PCR. CONCLUSIONS Analysed (GTG)4-PCR method do not show the ability to distinguish S. enterica serotypes from group 04, H:i, including monophasic strains with the antigenic shame 1,4,[5],12:i:-.
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Majchrzak M, Krzyzanowska A, Kubiak AB, Wojtasik A, Wolkowicz T, Szych J, Parniewski P. TRS-based PCR as a potential tool for inter-serovar discrimination of Salmonella Enteritidis, S. Typhimurium, S. Infantis, S. Virchow, S. Hadar, S. Newport and S. Anatum. Mol Biol Rep 2014; 41:7121-32. [PMID: 25063578 PMCID: PMC4204001 DOI: 10.1007/s11033-014-3592-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Accepted: 07/07/2014] [Indexed: 10/31/2022]
Abstract
Salmonella enterica subsp. enterica comprises a number of serovars, many of which pose an epidemiological threat to humans and are a worldwide cause of morbidity and mortality. Most reported food infection outbreaks involve the serovars Salmonella Enteritidis and Salmonella Typhimurium. Rapid identification to determine the primary sources of the bacterial contamination is important to the improvement of public health. In recent years, many DNA-based techniques have been applied to genotype Salmonella. Herein, we report the use of a manual TRS-PCR approach for the differentiation of the Salmonella enterica subspecies enterica serovars in a single-tube assay. One hundred seventy Salmonella strains were examined in this work. These consisted of serovars S. Enteritidis, S. Typhimurium, S. Infantis, S. Virchow, S. Hadar, S. Newport and S. Anatum. Five of the TRS-primers, N6(GTG)4, N6(CAC)4, N6(CGG)4, N6(CCG)4 and N6(CTG)4, perfectly distinguished the S. Enteritidis and S. Typhimurium serovars, and the N6(GTG)4 primer additionally grouped the other five frequently isolated serovars. In our opinion, the TRS-PCR methodology could be recommended for a quick and simple DNA-based test for inter-serovar discrimination of Salmonella strains.
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Affiliation(s)
- Marta Majchrzak
- Institute of Medical Biology PAS, 106 Lodowa Street, 93-232 Lodz, Poland
| | - Anna Krzyzanowska
- Institute of Medical Biology PAS, 106 Lodowa Street, 93-232 Lodz, Poland
| | - Anna B. Kubiak
- Institute of Medical Biology PAS, 106 Lodowa Street, 93-232 Lodz, Poland
| | - Arkadiusz Wojtasik
- Institute of Medical Biology PAS, 106 Lodowa Street, 93-232 Lodz, Poland
| | - Tomasz Wolkowicz
- Department of Bacteriology, National Institute of Public Health - National Institute of Hygiene, 24 Chocimska Street, 00-791 Warsaw, Poland
| | - Jolanta Szych
- Department of Bacteriology, National Institute of Public Health - National Institute of Hygiene, 24 Chocimska Street, 00-791 Warsaw, Poland
| | - Pawel Parniewski
- Institute of Medical Biology PAS, 106 Lodowa Street, 93-232 Lodz, Poland
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Altenberend J, Majchrzak M, Delannoy Y, Chichignoud G. Characterisation of an Ar-H2-O2ICP by OES: Measurement of the atomic concentrations of H and O. ACTA ACUST UNITED AC 2011. [DOI: 10.1088/1742-6596/275/1/012001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Dzieȩgiel P, Owczarek T, Plaz`uk E, Gomułkiewicz A, Majchrzak M, Podhorska-Okołów M, Driouch K, Lidereau R, Ugorski M. Ceramide galactosyltransferase (UGT8) is a molecular marker of breast cancer malignancy and lung metastases. Br J Cancer 2010; 103:524-31. [PMID: 20648017 PMCID: PMC2939773 DOI: 10.1038/sj.bjc.6605750] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2010] [Revised: 05/18/2010] [Accepted: 05/27/2010] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND It was shown recently on the level of gene expression that UGT8, coding UDP-galactose:ceramide galactosyltransferase, is one of six genes whose elevated expression correlated with a significantly increased the risk of lung metastases in breast cancer patients. In this study primary tumours and their lung metastases as well as breast cancer cell lines were analysed for UGT8 expression at the protein level. METHODS Expression of UGT8 in breast cancer tissue specimens and breast cancer cell lines was analysed using IHC, real-time PCR and Western blotting. RESULTS Comparison of the average values of the reaction intensities (IRS scale) showed a significant difference in UGT8 expression between (1) primary and metastatic tumours (Mann-Whitney U, P<0.05), (2) tumours of malignancy grades G3 and G2 (Mann-Whitney U, P<0.01) as well as G3 and G1 (Mann-Whitney U, P<0.001) and (3) node-positive and node-negative tumours (Mann-Whitney U, P<0.001). The predictive ability of increased expression of UGT8 was validated at the mRNA level in three independent cohorts of breast cancer patients (721). Similarly, breast cancer cell lines with the 'luminal epithelial-like' phenotype did not express or weakly expressed UGT8, in contrast to malignant, 'mesenchymal-like,' cells forming metastases in nude mice. CONCLUSION Our data suggest that UGT8 is a significant index of tumour aggressiveness and a potential marker for the prognostic evaluation of lung metastases in breast cancer.
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Affiliation(s)
- P Dzieȩgiel
- Department of Histology and Embryology, Medical University, T. Chałubińskiego 6a, Wrocław 50–368, Poland
- Department of Histology and Embryology, Medical University, Świeȩcickiego 6, Poznań 61–781, Poland
- Department of Pathology, Lower Silesian Oncology Center, Wrocław 53–413, Pl. Hirszfelda 12, Poland
| | - T Owczarek
- Department of Biochemistry, Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Environmental and Life Sciences, C. Norwida 31, Wrocław 50–357, Poland
| | - E Plaz`uk
- Laboratory of Glycobiology and Cell Interactions, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, R. Weigla 12, Wrocław 53–114, Poland
| | - A Gomułkiewicz
- Department of Histology and Embryology, Medical University, T. Chałubińskiego 6a, Wrocław 50–368, Poland
| | - M Majchrzak
- Department of Thoracic Surgery, Medical University, Grabiszyńska 105, Wrocław 53–430, Poland
| | - M Podhorska-Okołów
- Department of Histology and Embryology, Medical University, T. Chałubińskiego 6a, Wrocław 50–368, Poland
| | - K Driouch
- Oncogenetics laboratory/INSERM U 735, Saint-Cloud, France
| | - R Lidereau
- Oncogenetics laboratory/INSERM U 735, Saint-Cloud, France
| | - M Ugorski
- Department of Biochemistry, Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Environmental and Life Sciences, C. Norwida 31, Wrocław 50–357, Poland
- Laboratory of Glycobiology and Cell Interactions, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, R. Weigla 12, Wrocław 53–114, Poland
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Harati H, Barbelivien A, Cosquer B, Majchrzak M, Cassel JC. Selective cholinergic lesions in the rat nucleus basalis magnocellularis with limited damage in the medial septum specifically alter attention performance in the five-choice serial reaction time task. Neuroscience 2008; 153:72-83. [DOI: 10.1016/j.neuroscience.2008.01.031] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2008] [Revised: 01/22/2008] [Accepted: 01/25/2008] [Indexed: 11/16/2022]
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Majchrzak M, Bowater R, Staczek P, Parniewski P. SOS repair and DNA supercoiling influence the genetic stability of DNA triplet repeats in Escherichia coli. J Biotechnol 2007. [DOI: 10.1016/j.jbiotec.2007.07.027] [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: 10/23/2022]
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Seillier A, Dieu Y, Herbeaux K, Di Scala G, Will B, Majchrzak M. Evidence for a critical role of entorhinal cortex at pre-exposure for latent inhibition disruption in rats. Hippocampus 2007; 17:220-6. [PMID: 17203462 DOI: 10.1002/hipo.20260] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Latent inhibition (LI), that is the decrease in conditioned response induced by the repeated nonreinforced pre-exposures to the to-be-conditioned stimulus, is disrupted by entorhinal cortex (EC) lesions. The mechanism involved in this disruption is unknown, and in particular the experimental stage (pre-exposure or conditioning) at which the integrity of EC is necessary has to be determined. The purpose of this study was to address this issue by using reversible inactivation of the EC by local micro-infusion of tetrodotoxin (TTX). TTX was infused either before the pre-exposure phase, before the conditioning phase, or before both phases. LI was unaffected in rats that received TTX before conditioning or before both pre-exposure and conditioning. In contrast, LI was disrupted in rats that received TTX before pre-exposure only. These results are discussed in the framework of LI models.
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Affiliation(s)
- A Seillier
- Laboratoire de Neurosciences Comportementales et Cognitives, FRE 2855, Strasbourg, France
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Majchrzak M, Bowater RP, Staczek P, Parniewski P. SOS repair and DNA supercoiling influence the genetic stability of DNA triplet repeats in Escherichia coli. J Mol Biol 2006; 364:612-24. [PMID: 17028021 DOI: 10.1016/j.jmb.2006.08.093] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [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: 05/24/2006] [Revised: 08/25/2006] [Accepted: 08/31/2006] [Indexed: 01/27/2023]
Abstract
Molecular mechanisms responsible for the genetic instability of DNA trinucleotide sequences (TRS) account for at least 20 human hereditary disorders. Many aspects of DNA metabolism influence the frequency of length changes in such repeats. Herein, we demonstrate that expression of Escherichia coli SOS repair proteins dramatically decreases the genetic stability of long (CTG/CAG)n tracts contained in plasmids. Furthermore, the growth characteristics of the bacteria are affected by the (CTG/CAG)n tract, with the effect dependent on the length of the TRS. In an E. coli host strain with constitutive expression of the SOS regulon, the frequency of deletions to the repeat is substantially higher than that in a strain with no SOS response. Analyses of the topology of reporter plasmids isolated from the SOS+ and SOS- strains revealed higher levels of negative supercoiling in strains with the constitutively expressed SOS network. Hence, we used strains with mutations in topoisomerases to examine the effect of DNA topology upon the TRS instability. Higher levels of negative DNA supercoiling correlated with increased deletions in long (CTG/CAG)n, (CGG/CCG)n and (GAA/TTC)n. These observations suggest a link between the induction of bacterial SOS repair, changes in DNA topology and the mechanisms leading to genetic instability of repetitive DNA sequences.
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Affiliation(s)
- Marta Majchrzak
- Centre for Medical Biology, Polish Academy of Sciences, 106 Lodowa Street, 93-232 Lodz, Poland
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Barbelivien A, Herbeaux K, Oberling P, Kelche C, Galani R, Majchrzak M. Environmental enrichment increases responding to contextual cues but decreases overall conditioned fear in the rat. Behav Brain Res 2006; 169:231-8. [PMID: 16473418 DOI: 10.1016/j.bbr.2006.01.012] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [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: 11/07/2005] [Revised: 01/05/2006] [Accepted: 01/12/2006] [Indexed: 11/22/2022]
Abstract
This study aimed at investigating the effects of environmental enrichment on various aspects of contextual processing in adult female rats. In experiment 1, simple conditioning was studied using either a training procedure allowing overshadowing of the contextual cues by signalling footshock with a discrete tone or a training procedure allowing a reduction of this overshadowing by explicitly unpairing the footshock and the tone. In experiment 2, contextual discrimination and contextual occasion-setting were assessed. Rats were daily exposed to two different contexts. In one context, a footshock was delivered 30s after the offset of a tone, whereas in the other context the same tone was presented alone. Experiment 3 examined familiarization to a new context. Experiment 1 showed that environmental enrichment reduced the overshadowing of contextual cues by the tone and also reduced freezing to the more predictive cue according to the training procedure used. Experiment 2 showed that environmental enrichment increased the ability of rats to discriminate two contexts. Experiment 3 showed that enriched rats familiarized faster to a new context than standard rats. Taken together, these results suggest that environmental enrichment in adult rats enhances learning about contextual cues and reduces overall fear associated with aversive events.
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Affiliation(s)
- A Barbelivien
- Laboratoire de Neurosciences Comportementales et Cognitives, FRE 2855, Université Louis Pasteur, CNRS, IFR 37 des Neurosciences, Strasbourg, France
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Majchrzak M, Ferry B, Marchand AR, Herbeaux K, Seillier A, Barbelivien A. Entorhinal cortex lesions disrupt fear conditioning to background context but spare fear conditioning to a tone in the rat. Hippocampus 2006; 16:114-24. [PMID: 16281294 DOI: 10.1002/hipo.20138] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Recent studies have shown that the integrity of the entorhinal cortex (EC) is not required for simple contextual conditioning. In background contextual conditioning, i.e., when a phasic cue is present during training, the involvement of the EC is still a matter of debate. Therefore, the present work further examines whether the EC is required for background contextual conditioning using a tone as the phasic cue. Rats sustaining either excitotoxic lesions of the EC or sham-lesions were trained with one of two procedures differing with respect to the predictive value of the tone: a paired procedure in which the tone perfectly predicts shock occurrence and overshadows context, and an unpaired procedure in which the predictive value of the tone is reduced. Conditioned fear was assessed by freezing responses during conditioning, reexposure to the training context, and reexposure to the tone in a new context. Postshock freezing was reduced in rats with entorhinal lesions. In all rats trained with the paired procedure, freezing to the context was low and freezing to the tone was high, suggesting that the tone has overshadowed the context during the conditioning session. The reverse pattern was observed with the unpaired procedure in sham-operated rats. In rats with entorhinal lesions trained with the unpaired procedure, freezing responses to the context was markedly reduced. In a new context, however, entorhinal-lesioned rats showed higher freezing scores than those of sham-lesioned rats. Freezing to the tone was unaffected by the lesion irrespective of the tone's predictive value. As a whole, these results support the notion that the EC is required for normal background contextual freezing.
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Affiliation(s)
- M Majchrzak
- Laboratoire de Neurosciences Comportementales et Cognitives, UMR 7521, Université Louis Pasteur, CNRS, IFR des Neurosciences, Strasbourg, France.
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Dieu Y, Seillier A, Majchrzak M, Marchand A, Di Scala G. Systemic or intra-accumbens injection of D-amphetamine delays habituation to a tone stimulus in rats. Behav Pharmacol 2005; 16:35-42. [PMID: 15706136 DOI: 10.1097/00008877-200502000-00004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Dopamine release within the nucleus accumbens shell is suggested to control the salience of environmental stimuli, and previous research has shown that the indirect dopamine agonist D-amphetamine can alter the salience of both aversive and neutral stimuli. In experiment 1, the effect of systemic injection of D-amphetamine (0.5, 1 mg/kg) on fear conditioning to a tone was assessed in an 'off-baseline' conditioned suppression procedure using several footshock intensities. Although the effects of amphetamine on conditioning were unclear, the results indicated a deficit of simple tone habituation in amphetamine-treated rats. In experiment 2, habituation of the orienting reaction to a tone was assessed by the progressive reduction of lick suppression upon repeated presentation of the auditory stimulus. D-Amphetamine delayed tone habituation, whether administered systemically (0.5, 1 mg/kg) or into the nucleus accumbens shell (3, 10 microg/0.5 microl). These data are consistent with electrophysiological and neurochemical data demonstrating the role of nucleus accumbens dopamine in novelty processing. The relevance of the data to latent inhibition is discussed.
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Affiliation(s)
- Y Dieu
- Laboratoire de Neurosciences Comportementales et Cognitives (UMR 7521 ULP/CNRS), 12 rue Goethe, 67000 Strasbourg, France
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Seillier A, Coutureau E, Thiriet N, Herbeaux K, Zwiller J, Di Scala G, Will B, Majchrzak M. Bilateral lesions of the entorhinal cortex differentially modify haloperidol- and olanzapine-induced c-fos mRNA expression in the rat forebrain. Neuropharmacology 2003; 45:190-200. [PMID: 12842125 DOI: 10.1016/s0028-3908(03)00147-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Lesions of the entorhinal cortex are now an accepted model for mimicking some of the neuropathological aspects of schizophrenia, since evidence has accumulated for the presence of cytoarchitectonic abnormalities within this cortex in schizophrenic patients. The present study was undertaken to address the functional consequences of bilateral entorhinal cortex lesions on antipsychotic-induced c-fos expression. After a 15-day recovery period, the effect of a typical antipsychotic, haloperidol (1 mg/kg), on c-fos mRNA expression was compared with that of an atypical one, olanzapine (10 mg/kg), in both sham-lesioned and entorhinal cortex-lesioned rats. In sham-lesioned rats, both haloperidol and olanzapine induced c-fos expression in the caudal cingulate cortex, dorsomedial and dorsolateral caudate-putamen, nucleus accumbens core and shell and lateral septum. In addition, olanzapine, but not haloperidol, increased c-fos expression within the central amygdala. In entorhinal cortex-lesioned rats, haloperidol-induced c-fos expression was markedly reduced in most areas. In contrast, the olanzapine-induced c-fos expression was not altered in the nucleus accumbens shell and lateral septum of the lesioned rats. These findings reveal that entorhinal cortex lesions affect c-fos expression in a compound- and regional-dependent manner. Our results further emphasize the importance of the exploration of the mechanisms of action of antipsychotic drugs in the context of an associated cortical pathology.
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Affiliation(s)
- A Seillier
- Laboratoire de Neurosciences Comportementales et Cognitives, UMR 7521, Université Louis Pasteur, CNRS, IFR des Neurosciences, Strasbourg, France.
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Malendowicz LK, Nowak M, Gottardo L, Tortorella C, Majchrzak M, Nussdorfer GG. Cholecystokinin stimulates aldosterone secretion from dispersed rat zona glomerulosa cells, acting through cholecystokinin receptors 1 and 2 coupled with the adenylate cyclase-dependent cascade. Endocrinology 2001; 142:4251-5. [PMID: 11564681 DOI: 10.1210/endo.142.10.8420] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Cholecystokinin is a regulatory peptide, that acts through two subtypes of receptors, 1 and 2. RT-PCR demonstrated the expression of both cholecystokinin receptors 1 and 2 genes in the zona glomerulosa, but not the zona fasciculata-reticularis, of rat adrenals. Autoradiography demonstrated the presence of abundant [(125)I]cholecystokinin-binding sites in the zona glomerulosa, but not the zona fasciculata-reticularis, which were displaced by both cholecystokinin receptor 1- and 2-selective antagonists (cholecystokinin 1-A and 2-A). Cholecystokinin increased basal aldosterone secretion from dispersed zona glomerulosa cells without affecting corticosterone secretion from zona fasciculata-reticularis cells. The aldosterone response to cholecystokinin was blunted by cholecystokinin 1-A and 2-A, which when added together abolished it. ACTH-stimulated aldosterone production was not affected by cholecystokinin; in contrast, cholecystokinin potentiated aldosterone response to both angiotensin II and K(+). Cholecystokinin enhanced cAMP, but not IP(3), release by dispersed zona glomerulosa cells. The aldosterone response to cholecystokinin was abolished by the adenylate cyclase inhibitor SQ-22536 and the PKA inhibitor H-89, but not by either the PLC inhibitor U-73122 or the PKC inhibitor calphostin C. In conclusion, our study provides evidence that cholecystokinin, acting through cholecystokinin receptors 1 and 2 coupled with the adenylate cyclase/PKA cascade, exerts a sizeable secretagogue action on rat zona glomerulosa cells.
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Affiliation(s)
- L K Malendowicz
- Department of Histology and Embryology, School of Medicine, PL-60781 Poznan, Poland
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Hochól A, Neri G, Majchrzak M, Ziolkowska A, Nussdorfer GG, Malendowicz LK. Prolonged cerebellin administration inhibits the growth, but enhances steroidogenic capacity of rat adrenal cortex. Endocr Res 2001; 27:11-7. [PMID: 11428704 DOI: 10.1081/erc-100107164] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Cerebellin is a 16-amino acid peptide, that has been previously found to acutely stimulate steroid secretion from rat adrenal cortex in vivo and in vitro. We have investigated the effects of a prolonged cerebellin treatment (daily injections of 15 nmoles/kg for 6 consecutive days) on the growth and secretion of rat adrenal cortex. Cerebellin lowered adrenal weight, and morphometry showed that this was due to the decrease in the volume of each adrenocortical zone exclusively ensuing from the reduction in the number of its parenchymal cells. Cerebellin did not alter plasma concentration of ACTH, but it raised the levels of circulating aldosterone and corticosterone. The conclusion is drawn that cerebellin chronic administration evokes a marked hypoplastic atrophy of rat adrenocortical cells, that is coupled with an enhanced ACTH-independent steroidogenic capacity of the remaining parenchymal cells.
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Affiliation(s)
- A Hochól
- Department of Histology and Embryology, School of Medicine, Poznan, Poland
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Malendowicz LK, Tortorella C, Nowak KW, Nussdorfer GG, Hochól A, Majchrzak M. Leptin prolonged administration inhibits the growth and glucocorticoid secretion of rat adrenal cortex. Endocr Res 2000; 26:141-52. [PMID: 10921444 DOI: 10.3109/07435800009066158] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Leptin is an adipose-tissue secreted hormone, that acts to decrease caloric intake and to increase energy expenditure. Some of the leptin effects on the energy balance are known to be mediated by the hypothalamo-pituitary-adrenal (HPA) axis, but the role of this cytokine in the regulation of the growth and steroidogenic capacity of adrenal cortex is still controversial. Therefore, the present study was designed to explore the long-term effects of native leptin[1-147] and its biologically active fragment leptin[116-130] (6 daily subcutaneous injection of 20 nmol/kg) on the rat HPA axis. Leptin[1-147] and leptin[116-130] caused a significant adrenal atrophy, which was mainly due to the decrease in the volume of zona fasciculata (ZF) and in the number of its parenchymal cells. Both leptins provoked a marked drop in the plasma concentrations of ACTH and corticosterone, the main hormone produced by ZF cells. The effects of leptin[116-130] were more intense than those of leptin[1-147]. Leptin[1-147], but not its fragment, evoked a clear-cut rise in the plasma concentration of aldosterone. Collectively, these findings indicate that prolonged leptin administration, by inhibiting pituitary ACTH release, exerts a potent suppressive action on the growth and glucocorticoid secretory capacity of the adrenal cortex in the rat. The mechanism(s) underlying the aldosterone secretagogue action of native leptin remain(s) to be investigated.
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Affiliation(s)
- L K Malendowicz
- Department of Histology and Embryology, School of Medicine, Poznan, Poland
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Abstract
Reversible inactivation of brain areas is a useful method for inferring brain-behavior relationships. Infusion of GABA or of the GABA receptor agonist muscimol is considered one interesting reversible inactivation method because it may not affect fibers of passage and may therefore be compared to axon-sparing types of lesions. This article reviews the data obtained with this method in learning and memory experiments. A critical analysis of data, collected in collaboration with Simon Brailowsky, with chronic GABA infusion is presented, together with an illustration of data obtained with muscimol-induced inactivation.
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Affiliation(s)
- M Majchrzak
- Laboratoire de Neurociences Comportementales et Cognitives LN2C UMR7521 ULP/CNRS, Strasbourg, France
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Coutureau E, Galani R, Gosselin O, Majchrzak M, Di Scala G. Entorhinal but not hippocampal or subicular lesions disrupt latent inhibition in rats. Neurobiol Learn Mem 1999; 72:143-57. [PMID: 10536094 DOI: 10.1006/nlme.1998.3895] [Citation(s) in RCA: 80] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Latent inhibition (LI) is the deficit of conditioning resulting from repeated nonreinforced preexposure to a conditioned stimulus before its pairing with an unconditioned stimulus. There are cumulative data showing that large lesions of the hippocampal formation disrupt LI. However, the effects of selective lesions of the different components of the hippocampal formation have never been directly addressed in the same study and conditioning paradigm. The first experiment of the present study aimed at investigating the effects of excitotoxic lesions of the hippocampus, subiculum, or entorhinal cortex on LI in an "off-baseline"-conditioned emotional response procedure. Hippocampus or subiculum lesions had no effect on either LI or conditioning. In contrast, entorhinal cortex lesions disrupted LI without modifying conditioning. In Experiment 2, locomotor activity in a novel environment was assessed in the same rats. Whereas lesions of hippocampus increased locomotor activity, lesions of the subiculum or the entorhinal cortex were devoid of effect. Although both LI and habituation to novel environmental cues are thought to involve interactions between the hippocampal formation and the mesolimbic pathway, these results indicate a functional dissociation between the hippocampus and the entorhinal cortex.
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Affiliation(s)
- E Coutureau
- Laboratoire de Neurosciences Comportementales et Cognitives, UMR 7521 CNRS, Strasbourg, France.
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Hochol A, Markowska A, Meneghelli V, Jedrzejczak N, Majchrzak M, Nowak M, Nussdorfer GG, Malendowicz LK. Effects of neurotensin and bombesin on the secretory and proliferative activity of regenerating rat adrenal cortex. Histol Histopathol 1999; 14:1073-8. [PMID: 10506923 DOI: 10.14670/hh-14.1073] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Neurotensin (NT) and bombesin (BM)-like peptides are known to be involved in the regulation of the rat hypothalamo-pituitary-adrenal axis. By using selective NT- and BM-receptor antagonists (NT-A and BM-A, respectively) we investigated whether endogenous NT and BM-like peptides play a role in the control of rat adrenal secretion and growth during enucleation-induced regeneration. At day 5 of regeneration, NT-A did not affect the plasma concentrations of aldosteronc (PAC) and corticosterone (PBC), but at day 8, it raised both PAC and PBC over the respective baseline value; the simultaneous administration of NT abolished this effect of NT-A. BM-A did not alter PAC and PBC at day 5 of regeneration, while at day 8 it enhanced PBC, an effect reversed by BM. NT-A did not alter mitotic index, and BM-A lowered it at both day 5 and day 8 of regeneration, an effect suppressed by the simultaneous administration of BM. Collectively, these findings allow us to draw the following conclusions: 1) endogenous NT and BM-like peptides influence adrenocortical regeneration in rats; 2) NT exerts a tonic inhibitory action on both aldosterone and corticosterone secretion, without affecting cell-proliferation rate; and 3) BM-like peptides exert a tonic suppressive effect on corticosterone production, coupled with a clear-cut stimulating effect on cell proliferation.
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Affiliation(s)
- A Hochol
- Department of Histology and Embryology, School of Medicine, Poznan, Poland
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Malendowicz LK, Nussdorfer GG, Meneghelli V, Nowak M, Markowska A, Majchrzak M. Effects of endothelin-1 on the rat pituitary-adrenocortical axis under basal and stressful conditions. Endocr Res 1997; 23:349-64. [PMID: 9430823 DOI: 10.1080/07435809709031862] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Endothelins (ETs) and their receptor subtypes A and B (ETA and ETB) are expressed in the various components of the mammalian hypothalamo-pituitary-adrenal (HPA) axis, but their involvement in the functional regulation of HPA is controversial. To gain insight into this topic, we have investigated the effects of ET-1 and/or the specific antagonists of ETA and ETB receptors (BQ-123 and BQ-788, respectively) on the plasma concentrations of ACTH, corticosterone and aldosterone of non-stressed (control) and ether- or cold-stressed rats. The study of the effects of the administration of the two ET-receptor antagonists alone could provide informations about the possible action of endogenous ETs on the HPA axis. Exogenous ET-1 increased ACTH, corticosterone and aldosterone blood levels in control rats, as well as evoked a sizable enhancement of the HPA axis response to ether stress and a marked depression of the response to cold stress. BQ-123 and BQ-788 did not prevent the stimulatory effect of exogenous ET-1 in control rats, but when administered alone, raised the plasma concentrations of ACTH, corticosterone and aldosterone. Both ET-receptor antagonists magnified the HPA axis response to ether and cold stresses, but their effect was not counteracted by exogenous ET-1. Although very difficult to interpret, our present findings allow us to conclude that endogenous ETs play a role in the maintenance of the basal activity of rat HPA axis acting through ETA and ETB receptor subtypes, which are partially insensitive to BQ-123 and BQ-788. Conversely, the involvement of ETs in the modulation of the HPA axis responses to various stresses is very doubtful.
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Affiliation(s)
- L K Malendowicz
- Department of Histology and Embryology, School of Medicine, Poznan, Poland
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Affiliation(s)
- K Malendowicz
- Department of Histology and Embryology, School of Medicine, Poznan, Poland
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Malendowicz LK, Nussdorfer GG, Miskowiak B, Majchrzak M. Effects of bombesin on the morphology and function of the rat adrenal cortex: comparison of the acute and chronic responses. Histol Histopathol 1995; 10:11-5. [PMID: 7756730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The acute and chronic effects of bombesin (BM) on the structure and function of rat adrenal cortex were investigated by morphometric and radioimmunological techniques. An intraperitoneal bolus injection of 2 micrograms/rat BM markedly raised plasma corticosterone (B) concentration (PBC). The intraperitoneal BM infusion (1 microgram/rat.h-1) for 1, 2 or 4 days evoked a notable increase in the number of adrenocortical cells, without inducing apparent changes in either PBC or B output by adrenal quarters. Since proliferation and expression of specialized functions are mutually exclusive states of cells, our findings suggest that the conspicuous stimulation of adrenocortical-cell proliferation evoked by BM infusion may be responsible for the apparent lack of effect of this treatment on B secretion.
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Affiliation(s)
- L K Malendowicz
- Department of Histology and Embryology, School of Medicine, Poznan, Poland
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Whishaw IQ, Cassel JC, Majchrzak M, Cassel S, Will B. "Short-stops" in rats with fimbria-fornix lesions: evidence for change in the mobility gradient. Hippocampus 1994; 4:577-82. [PMID: 7889128 DOI: 10.1002/hipo.450040507] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Rats with damage to the hippocampal formation and allied structures are hyperactive in many test situations but the cause of this hyperactivity is not known. Here the activity of control rats and rats with fimbria-fornix lesions is documented in tests of overnight activity. Details of activity are then characterized from video recordings of behavior in an open field. Rats with fimbria-fornix lesions make significantly more stops of shorter duration and thus more individual trips than control rats but they do not differ in the distance traveled on individual trips or in travel speed. It is suggested that the main difference between fimbria-fornix rats and control rats is that when fimbria-fornix rats stop they remain "still" for shorter durations than do control rats. This finding is discussed in relation to a theory of locomotor/exploratory behavior, and in relation to its implications with respect to the performance of fimbria-fornix rats in studies of learning and memory.
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Affiliation(s)
- I Q Whishaw
- LNBC-U.P.R. 419 du CNRS, Université Louis Pasteur, Strasbourg, France
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39
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Malendowicz LK, Nussdorfer GG, Majchrzak M, Nowak M, Lesniewska B. Neurotensin stimulates the growth and secretion of rat adrenal zona glomerulosa. In Vivo 1992; 6:523-5. [PMID: 1333833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Within 2 days neurotensin (NT) and ACTH administrations markedly enhanced the average volume of zona glomerulosa (ZG) cells and plasma aldosterone concentration (PAC) in intact rats. In dexamethasone-treated rats, both NT and ACTH evoked a clearcut ZG-cell hypertrophy, but only NT was able to raise PAC. In conclusion, our findings indicate that NT is a potent stimulator of the growth and secretion of rat ZG in vivo, and suggest that the mechanism underlying this action of NT does not involve the well-known NT-induced stimulation of ACTH release.
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Affiliation(s)
- L K Malendowicz
- Department of Histology and Embryology, University School of Medical Sciences, Poznan, Poland
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Abstract
The metabolic effects of gamma aminobutyric acid (GABA) unilaterally infused for 24 h into the nucleus basalis magnocellularis (NBM) of rats were studied using the 2-deoxyglucose method for measuring local cerebral metabolic rates for glucose (CMRglc). These results demonstrated that GABA infusion at the concentration of 100 micrograms.microliters-1 induced a strong ipsilateral depression in glucose utilization in the NBM and in some surrounding structures (e.g., the lateral hypothalamic area, thalamus, and amygdala) as well as in the major cortical targets of NBM neurons (i.e., the frontal, parietal, and temporal cortices). On an other hand, GABA infusion at the concentration of 10 micrograms.microliter-1 had no significant effect on cerebral metabolism compared to the saline-infused rats. Nevertheless, both GABA at the concentration of 10 micrograms.microliter-1 and saline induced a reduction of cerebral metabolism in the infused NBM, compared to the contralateral noninfused NBM. It was also demonstrated that saline pretreatment reduced the metabolic depression induced by GABA infusion at the highest concentration. When GABA was infused at the concentration of 100 micrograms.microliter-1, a slight reduction of CMRglc was observed in the hemisphere contralateral to the infused one, mainly in NBM target areas. In view of our previous behavioral data, these results suggest among others, that there is no necessary relationship between cerebral glucose metabolism and behavioral expression.
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Affiliation(s)
- M Majchrzak
- Laboratoire de Neurophysiologie et Biologie des Comportements CNRS UPR 419 Centre de Neurochimie Strasbourg, France
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Cassel J, Kelche C, Majchrzak M, Will B. Factors influencing structure and function of intracerebral grafts in the mammalian brain: a review. Restor Neurol Neurosci 1992; 4:65-96. [DOI: 10.3233/rnn-1992-4201] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- J.C. Cassel
- L.N.B.C, U.P.R. 419 du C.N.R.S., Centre de Neurochimie, 12 rue Goethe, F-67000 Strasbourg (France)
| | - C. Kelche
- L.N.B.C, U.P.R. 419 du C.N.R.S., Centre de Neurochimie, 12 rue Goethe, F-67000 Strasbourg (France)
| | - M. Majchrzak
- L.N.B.C, U.P.R. 419 du C.N.R.S., Centre de Neurochimie, 12 rue Goethe, F-67000 Strasbourg (France)
| | - B.E. Will
- L.N.B.C, U.P.R. 419 du C.N.R.S., Centre de Neurochimie, 12 rue Goethe, F-67000 Strasbourg (France)
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Ballough G, Majchrzak M, Strauss J, Kan R, Anthony A, Will B. Cytophotometric analysis of magnocellular azure B-RNA and Feulgen-DNA following chronic GABA infusion into the nucleus basalis of rats. Life Sci 1992; 50:1299-310. [PMID: 1373212 DOI: 10.1016/0024-3205(92)90280-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 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] [Indexed: 11/26/2022]
Abstract
This investigation was undertaken to examine possible cytopathic effects of GABA infusion on nucleus basalis (NBM) magnocellular neurons. Sixty-three male Long-Evans rats received unilateral, intra-NBM infusions of either GABA100 (100 micrograms/microliters/h), GABA10 (10 micrograms/microliters/h), or ultrafiltered saline (1 microliter/h) for a period of 24 hours. Rats from each of these groups were sacrificed at either 24 hours, 48 hours or 8 days following initiation of infusions. The sham operated hemisphere of each rat served as a control for the infused hemisphere. After stoichiometric azure B-RNA and Feulgen-DNA staining of brain sections, scanning-integrating microdensitometry was used to quantify GABA-induced alterations in these well established indices of neuronal toxicity. These results provide evidence that the neurotoxic effects of 24 hours of 100 micrograms/microliters-h GABA infusion are manifested within 48 hours post-initiation of infusions. Although 24 hours of 10 micrograms/microliters-h GABA infusion suppressed NBM neuronal metabolism, the lower magnitude and duration of this effect signified an impending recovery. GABA infusion resulted in little if any NBM neuronal chromatin template impairment (i.e., reduced Feulgen-DNA reactivity), irrespective of the dosage employed and the delay prior to sacrifice.
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Affiliation(s)
- G Ballough
- L.N.B.C., U.P.R. 419 du CNRS, Strasbourg, France
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Majchrzak M, Brailowsky S, Will B. Chronic infusion of GABA into the nucleus basalis magnocellularis or frontal cortex of rats: a behavioral and histological study. Exp Brain Res 1992; 88:531-40. [PMID: 1587314 DOI: 10.1007/bf00228182] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
In order to determine the influence of the nucleus basalis magnocellularis (NBM) on the sensorimotor function of the frontal cortex (FCx) of the rat, GABA at various concentrations (10, 50 or 100 micrograms.microliters-1) was administered into these structures. GABA was infused for four consecutive days after which saline was infused for another four. On the contralateral side the order of administration was reversed. Each structure received GABA while its homologous on the contralateral side received saline. Before, during and after drug infusion, the animals were weighted and their performance in two non-reinforced behavioral tasks (beam walking and spontaneous rotation) was examined. When GABA was infused into the FCx, a dose-dependent and reversible sensorimotor deficit was observed along with a behavioral withdrawal syndrome upon GABA discontinuation. When GABA was administered into the NBM, a reversible sensorimotor deficit was observed only when GABA was infused at the highest concentration. In this case no behavioral changes were observed upon GABA discontinuation. Histologically, a gliosis was observed in the NBM in which GABA was infused at the two highest concentrations without saline pretreatment; these effects were not observed when GABA was infused without saline pretreatment into the FCx. In relation to our previous findings, these results suggest that i) the FCx is directly involved in the expression of sensorimotor functions, while the influence of the NBM on these functions appears only after severe subcortical damage, ii) a GABA withdrawal syndrome is observed following GABA administration in the FCx but not in the NBM, and iii) "tonic" effects of GABA are dose-related and partially dependent upon pretreatment conditions and the brain region infused.
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Affiliation(s)
- M Majchrzak
- Laboratoire de Neurophysiologie et de Biologie des Comportements, Centre de Neurochimie, UPR 419 du CNRS, Strasbourg, France
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Malendowicz LK, Leśniewska B, Baranowska B, Nowak M, Majchrzak M. Effect of bombesin on the structure and function of the rat adrenal cortex. Res Exp Med (Berl) 1991; 191:121-8. [PMID: 1650017 DOI: 10.1007/bf02576667] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Intact and dexamethasone-treated adult female Wistar rats were infused (Alzet osmotic minipumps) with bombesin (0.75 micrograms/rat per day) for 7 days. Bombesin depressed body weight and capacity of adrenal homogenate to secrete corticosterone; the latter effect was reflected in intact rats by a drop in serum corticosterone level. Bombesin had no effect on pituitary and serum adrenocorticotropic hormone (ACTH) concentration and serum aldosterone level. In intact animals, infusion of bombesin resulted in lowering of the number of parenchymal cells in adrenal cortex connected with the hypertrophy of glomerulosa and fasciculata cells. Moreover, bombesin lowered basal corticosterone secretion by isolated rat adrenocortical cells; however, neuropeptide applied did not change the response of isolated cells to ACTH stimulation. The data obtained clearly demonstrate inhibitory effect of bombesin on basal corticosterone secretion by the rat adrenal cortex.
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Affiliation(s)
- L K Malendowicz
- Department of Histology and Embryology, Poznan Academy of Medicine, Poland
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Abstract
In order to assess sensorimotor and/or cognitive modifications following chronic inhibition of nucleus basalis magnocellularis (NBM) neurons, rats trained in two radial maze paradigms (the classical version of the test and a modified version introducing a one-hour delay between the fourth and the fifth choice) received chronic infusion of gamma-aminobutyric acid (GABA) into the NBM area. GABA (10 and 50 micrograms/microliters/h) was infused for 3 days into the NBM contralateral to their preferred turning direction in the radial maze. Simultaneously, saline (NaCl 0.9%; 1 microliter/h) was infused into the contralateral NBM. GABA and saline infusions were alternated for the subsequent 3-day period. One week later, we investigated the rats' ability to learn a multiple trial passive avoidance task. At the dose of 50 micrograms/microliters, GABA infusion produced (1) a turning bias ipsilateral to the side first infused with GABA, (2) transitory cognitive impairments in radial maze tasks and (3) a deficit in the acquisition of the passive avoidance task. At the dose of 10 micrograms/microliters, the same behavioral deficits were observed except that (1) the turning bias was reversed by the contralateral GABA infusion and (2) cognitive impairments in the radial maze were observed only when a delay was inserted between the fourth and the fifth choice. Histologically, we found a dose-dependent gliosis in the NBM area first infused with GABA. These data suggest a reactivity of the NBM to GABAergic manipulations and the intervention of this structure in both sensorimotor and cognitive processes involved in the radial maze paradigms.
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Affiliation(s)
- M Majchrzak
- Département de Neurophysiologie et de Neurobiologie des Comportements, CNRS, Strasbourg, France
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Kuś J, Halama M, Majchrzak M, Szmurło-Zabolicka B. [Wegener's disease, Wegener's granuloma in 12 observed cases]. Pol Tyg Lek 1989; 44:671-2. [PMID: 2637439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Dilsaver SC, Davidson R, Majchrzak M. Chronic treatment with amitriptyline produces subsensitivity to the hypothermic effects of clonidine. Prog Neuropsychopharmacol Biol Psychiatry 1989; 13:297-302. [PMID: 2748867 DOI: 10.1016/0278-5846(89)90026-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
1. Supersensitivity or up-regulation of presynaptic alpha 2-adrenoceptors may be involved in the pathogenesis of depression. 2. The authors used a thermoregulation paradigm to test the hypothesis that chronic treatment with a tricyclic antidepressant amitriptyline (AMI) produces subsensitivity to the hypothermic effects of the alpha 2 agonist clonidine. 3. Treatment with amitriptyline produced blunting of the hypothermic response to clonidine. 4. Subsensitivity persisted for at least 21 days--that point after the discontinuation of the tricyclic at which the animals were last challenged with clonidine. 5. These findings are consistent with previous reports that tricyclic antidepressants produce subsensitivity of alpha 2 adrenoceptors.
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Affiliation(s)
- S C Dilsaver
- Department of Psychiatry, Ohio State University, Columbus
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48
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Nowak M, Majchrzak M, Malendowicz LK. Stereologic studies on the adrenal cortex of 4-APP (4-amino-pyrazolopyrimidine)-induced lipoprotein-deficient rats. Exp Pathol 1987; 31:169-73. [PMID: 3609240 DOI: 10.1016/s0232-1513(87)80103-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The effect of 4-APP (4-aminopyrazolopyrimidine), the compound reducing hepatic release of lipoproteins, on the rat adrenal cortex was studied by means of stereological methods. Within 3 days 4-APP resulted in a marked increase in the absolute and relative adrenal weights and markedly lowered plasma and adrenal total cholesterol concentration. 4-APP did not change the relative volume of individual adrenocortical zones, however significantly increased the volume in mm3 of the zona fasciculata (ZF) and reticularis (ZR) and of the entire cortex. The average volume of the ZF and ZR cells of 4-APP treated rats was markedly higher than in control rats while no difference was found in the zona glomerulosa (ZG) cell. In lipoprotein-deficient rats the number of adrenocortical cells within the entire cortex was similar to that observed in control rats. A marked increase in the number of mitoses in both, adrenocortical and endothelial cells suggests inhibitory action of 4-APP on the proliferative activity of these cells. The present study shows that 4-APP-induced changes in the rat adrenal cortex mainly depends upon the stimulatory action of that compound on ACTH secretion, however this adenine analogue also exerts a direct action on the adrenocortical cells.
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Malendowicz LK, Majchrzak M, Nowak M. Estradiol and melatonin effects on adrenal cortex of ovariectomized and pinealectomized rats. Exp Clin Endocrinol 1985; 85:276-82. [PMID: 3876230 DOI: 10.1055/s-0029-1210450] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Studies on the effect of pinealectomy (PX) and melatonin on adrenal cortex of ovariectomized and estradiol replaced rats were performed. Neither PX nor melatonin replacement changed corticosterone output by adrenal homogenate, 11 beta-hydroxylase activity, liver corticosterone metabolism or serum corticosterone level, however, melatonin increased adrenal 5 alpha-reductase activity. On the other hand, PX of 14 months duration resulted in an increase in intraadrenal 5 alpha-reductase activity. PX did not modify estradiol effect on rat adrenal cortex, while concomitant estradiol-melatonin administration increased corticosterone output by adrenal homogenate. Stimulatory effect of estradiol on liver corticosterone metabolism was observed only in the presence of pineal gland or exogenous melatonin. In non of experiments, 45 nmole/ml of melatonin added into incubation medium stimulated adrenal 5 alpha-reductase activity. Obtained results cast doubt on a physiological role of melatonin in regulation of adrenocortical secretory activity in ovariectomized rats and suggest that estradiol effect on the adrenal cortex is not mediated by the pineal gland.
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Majchrzak M, Malendowicz LK. Sex differences in adrenocortical structure and function. XII. Stereologic studies of rat adrenal cortex in the course of maturation. Cell Tissue Res 1983; 232:457-69. [PMID: 6883453 DOI: 10.1007/bf00213800] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
This paper reports a stereological study of the cellular aspects of development of the adrenal cortex of male and female rats in the course of maturation. Rats of the Wistar strain were studied at weekly intervals from day 21 to day 77 of postnatal life. From day 42 homogenates of adrenals from female rats produced more corticosterone than homogenates from males of corresponding age. In the strain of rats studied sex differences in adrenal weight appeared at about day 49. From this day onward relative, and subsequently absolute adrenal weights were higher in females than in males. In the course of maturation the total volume of all adrenocortical zones gradually increased. From day 70 the zona glomerulosa and from day 49 the zona fasciculata were larger in female than in male rats, while no distinct sex difference was observed in the volume of the zona reticularis. The appearance of sex-related differences in the adrenal cortex depends mainly on changes in the zona fasciculata, the cells of which markedly increased in volume in female rats by comparison with males. The total number of all adrenocortical cells increased from ca 13 million on day 21 to ca 25 million on day 77 and at all intervals studied adrenal glands of male and female rats contained a similar number of parenchymal cells.
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