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Raskova Kafkova L, Navrkalova V, Jarosova M, Loja T, Chovancova J, Kucerova J, Kriegova E, Prochazka V, Novak Z, Simkova D, Pospisilova S, Divoky V. Ability to downregulate the level of cyclin-dependent kinase inhibitor p27 Kip1 after DNA damage is retained in chronic lymphocytic leukemia cells with functional ATM/p53 signaling pathway. Leuk Lymphoma 2016; 58:199-203. [PMID: 27268868 DOI: 10.1080/10428194.2016.1187276] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Leona Raskova Kafkova
- a Department of Biology, Faculty of Medicine and Dentistry , Palacky University , Olomouc , Czech Republic
| | - Veronika Navrkalova
- b Center of Molecular Medicine , CEITEC - Central European Institute of Technology, Masaryk University , Brno , Czech Republic
| | - Marie Jarosova
- c Department of Hemato-Oncology, Faculty of Medicine and Dentistry , Palacky University and University Hospital Olomouc , Czech Republic
| | - Tomas Loja
- b Center of Molecular Medicine , CEITEC - Central European Institute of Technology, Masaryk University , Brno , Czech Republic
| | - Jana Chovancova
- b Center of Molecular Medicine , CEITEC - Central European Institute of Technology, Masaryk University , Brno , Czech Republic
| | - Jana Kucerova
- a Department of Biology, Faculty of Medicine and Dentistry , Palacky University , Olomouc , Czech Republic
| | - Eva Kriegova
- d Department of Immunology, Faculty of Medicine and Dentistry , Palacky University , Olomouc , Czech Republic
| | - Vit Prochazka
- c Department of Hemato-Oncology, Faculty of Medicine and Dentistry , Palacky University and University Hospital Olomouc , Czech Republic
| | - Zdenek Novak
- e Department of Surgery , University of Alabama at Birmingham , Birmingham , AL , USA
| | - Dana Simkova
- a Department of Biology, Faculty of Medicine and Dentistry , Palacky University , Olomouc , Czech Republic
| | - Sarka Pospisilova
- b Center of Molecular Medicine , CEITEC - Central European Institute of Technology, Masaryk University , Brno , Czech Republic
| | - Vladimir Divoky
- a Department of Biology, Faculty of Medicine and Dentistry , Palacky University , Olomouc , Czech Republic
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Divoka M, Partschova M, Kucerova J, Mojzikova R, Cermak J, Pospisilova D, Fabryova V, Prochazkova D, Indrak K, Divoky V. Molecular Characterization ofβ-Thalassemia in the Czech and Slovak Populations: Mediterranean, Asian and Unique Mutations. Hemoglobin 2016; 40:156-62. [DOI: 10.3109/03630269.2016.1152581] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Marincova L, Kucerova J. Implementation of Health Impact Assessment in the Czech Republic: a case study of bottom-up approach. Eur J Public Health 2015. [DOI: 10.1093/eurpub/ckv172.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Kucerova J, Babinska Z, Horska K, Kotolova H. The common pathophysiology underlying the metabolic syndrome, schizophrenia and depression. A review. Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub 2015; 159:208-14. [DOI: 10.5507/bp.2014.060] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Accepted: 11/12/2014] [Indexed: 12/31/2022] Open
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Kucerova J, Tabiova K, Drago F, Micale V. Therapeutic potential of cannabinoids in schizophrenia. ACTA ACUST UNITED AC 2014; 9:13-25. [PMID: 24605939 DOI: 10.2174/1574889809666140307115532] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Revised: 03/03/2014] [Accepted: 03/06/2014] [Indexed: 11/22/2022]
Abstract
Increasing evidence suggests a close relationship between the endocannabinoid system and schizophrenia. The endocannabinoid system comprises of two G protein-coupled receptors (the cannabinoid receptors 1 and 2 [CB1 and CB2] for marijuana's psychoactive principle Δ(9)-tetrahydrocannabinol), their endogenous small lipid ligands (namely anandamide [AEA] and 2-arachidonoylglycerol [2-AG], also known as endocannabinoids), and proteins for endocannabinoid biosynthesis and degradation. It has been suggested to be a pro-homeostatic and pleiotropic signalling system activated in a time- and tissue-specific manner during pathophysiological conditions. In the brain, activation of this system impacts the release of numerous neurotransmitters in various systems and cytokines from glial cells. Hence, the endocannabinoid system is strongly involved in neuropsychiatric disorders, such as schizophrenia. Therefore, adolescence use of Cannabis may alter the endocannabinoid signalling and pose a potential environmental risk to develop psychosis. Consistently, preclinical and clinical studies have found a dysregulation in the endocannabinoid system such as changed expression of CB1 and CB2 receptors or altered levels of AEA and 2-AG . Thus, due to the partial efficacy of actual antipsychotics, compounds which modulate this system may provide a novel therapeutic target for the treatment of schizophrenia. The present article reviews current available knowledge on herbal, synthetic and endogenous cannabinoids with respect to the modulation of schizophrenic symptomatology. Furthermore, this review will be highlighting the therapeutic potential of cannabinoid-related compounds and presenting some promising patents targeting potential treatment options for schizophrenia.
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Affiliation(s)
| | | | | | - Vincenzo Micale
- CEITEC (Central European Institute of Technology) Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic.
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Fiala O, Zahorakova D, Pospisilova L, Kucerova J, Matejckova M, Martasek P, Roth J, Ruzicka E. Parkin (PARK 2) mutations are rare in Czech patients with early-onset Parkinson's disease. PLoS One 2014; 9:e107585. [PMID: 25238391 PMCID: PMC4169530 DOI: 10.1371/journal.pone.0107585] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Accepted: 08/11/2014] [Indexed: 01/16/2023] Open
Abstract
Objective The aim of the study is to determine the frequency of parkin allelic variants in Czech early-onset Parkinson's disease patients and healthy controls. Methods A total of 70 early-onset Parkinson's disease patients (age at onset ≤40 years) and 75 controls were screened for the sequence variants and exon rearrangements in the parkin gene. Results Parkin mutations were identified in five patients (7.1%): the p.R334C point mutation was present in one patient, four patients had exon deletions. The detected mutations were observed in the heterozygous state except one homozygous deletion of the exon 4. No mutations were obtained in control subjects. A novel sequence variant p.V380I (c.1138G>A) was identified in one control. Non-pathogenic polymorphisms p.S167N and p.D394N were seen in similar percentage in patients and controls, polymorphism p.V380L was almost twice as frequent in controls as in patients. Conclusions Our study contributes to the growing body of evidence on the low frequency of the parkin mutations in the early-onset Parkinson's disease suggesting the potential role of other genes in the pathogenesis of the disease.
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Affiliation(s)
- Ondrej Fiala
- Department of Neurology and Centre of Clinical Neuroscience, 1st Faculty of Medicine and General University Hospital, Charles University, Prague, Czech Republic
- Institute of Neuropsychiatric Care (INEP), Prague, Czech Republic
- * E-mail:
| | - Daniela Zahorakova
- Department of Pediatrics and Adolescent Medicine, 1st Faculty of Medicine, and General University Hospital, Charles University, Prague, Czech Republic
| | - Lenka Pospisilova
- Department of Pediatrics and Adolescent Medicine, 1st Faculty of Medicine, and General University Hospital, Charles University, Prague, Czech Republic
| | - Jana Kucerova
- Department of Pediatrics and Adolescent Medicine, 1st Faculty of Medicine, and General University Hospital, Charles University, Prague, Czech Republic
| | - Milada Matejckova
- Department of Pathology and Molecular Medicine, Thomayer's University Hospital, Prague, Czech Republic
| | - Pavel Martasek
- Department of Pediatrics and Adolescent Medicine, 1st Faculty of Medicine, and General University Hospital, Charles University, Prague, Czech Republic
| | - Jan Roth
- Department of Neurology and Centre of Clinical Neuroscience, 1st Faculty of Medicine and General University Hospital, Charles University, Prague, Czech Republic
| | - Evzen Ruzicka
- Department of Neurology and Centre of Clinical Neuroscience, 1st Faculty of Medicine and General University Hospital, Charles University, Prague, Czech Republic
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Ulehlova J, Slavik L, Kucerova J, Krcova V, Vaclavik J, Indrak K. Genetic polymorphisms of platelet receptors in patients with acute myocardial infarction and resistance to antiplatelet therapy. Genet Test Mol Biomarkers 2014; 18:599-604. [PMID: 25093390 DOI: 10.1089/gtmb.2014.0077] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
METHODS The studied group comprises 124 patients with acute myocardial infarction on dual antiplatelet therapy with acetylsalicylic acid (ASA) and thienopyridines. Antiplatelet therapy was monitored by platelet-rich plasma light transmittance aggregometry (LTA) using the APACT 4004 analyzer (Helena Laboratories) and by whole blood impedance aggregometry (multiple electrode aggregometry [MEA]) using the Multiplate analyzer (Dynabyte). Platelet aggregation was detected after stimulation with arachidonic acid for detection of aspirin resistance and with adenosine diphosphate (ADP) and prostaglandin E1 for detection of thienopyridine resistance. To determine the frequencies of P2Y12 (i-744T>C; rs2046934), P2Y12 (34C>T; rs6785930), COX-1 (-842A>G; rs10306114), GPVI (13254T>C; rs1613662), and GPIbA (5T>C; rs2243093) polymorphisms, DNA of patients with AIM was tested by real-time-polymerase chain reaction and melting curve analysis using the LightCycler 480 analyzer (Roche Diagnostics). RESULTS The cut-off points used for patients with effective ASA therapy are 25% of aggregated platelets and 220 area under the curve (AUC)/min if LTA or MEA, respectively. The cut-off points used for effective thienopyridine therapy are 45% of aggregated platelets or 298 AUC/min, respectively. Both LTA and MEA found that aspirin and thienopyridine therapies failed in 14.51% and 25.8%, respectively. The data were statistically processed using the SPSS version 15 software (SPSS, Inc.). Associations between receptor mutation status and response to therapy were assessed with Fisher's exact test. The significance level was set at 0.05. CONCLUSION The aim of our work was to use the two functional laboratory methods described earlier to assess both aspirin and thienopyridine resistance and to determine the contribution of genetic polymorphisms of platelet receptors to resistance to antiplatelet therapy in AIM. Fisher's exact test showed a significant statistical correlation between platelet function tests suitable for monitoring ASA resistance, that is, LTA and MEA, and mutation status of COX1_A1 (-A842G). Fisher's exact test showed no statistically significant correlations between platelet function tests suitable for monitoring ASA resistance, that is, LTA and MEA, and mutation status of GP1bA (-5T>C) and GP6 (T13254C). Fisher's exact test showed no statistically significant correlation between mutational statuses of the receptors P2RY12 (i-T744C), P2RY12 (C34T), GP1bA (-5T>C), or GP6 (T13254C) and response to antiplatelet therapy with 75 mg of clopidogrel.
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Affiliation(s)
- Jana Ulehlova
- 1 Department of Hemato-Oncology, Faculty of Medicine and Dentistry, Palacky University Olomouc and University Hospital , Olomouc, Czech Republic
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Kucerova J, Svobodova Z, Knotek P, Palarcik J, Vlcek M, Kincl M, Horak D, Autebert J, Viovy JL, Bilkova Z. PEGylation of magnetic poly(glycidyl methacrylate) microparticles for microfluidic bioassays. Materials Science and Engineering: C 2014; 40:308-15. [DOI: 10.1016/j.msec.2014.04.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Revised: 02/15/2014] [Accepted: 04/03/2014] [Indexed: 11/25/2022]
Affiliation(s)
- Jana Kucerova
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 53210 Pardubice, Czech Republic
| | - Zuzana Svobodova
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 53210 Pardubice, Czech Republic
| | - Petr Knotek
- Joint Laboratory of Solid State Chemistry of IMC and University of Pardubice, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 53210 Pardubice, Czech Republic
| | - Jiri Palarcik
- Institute of Environmental and Chemical Engineering, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 53210 Pardubice, Czech Republic
| | - Milan Vlcek
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 16206 Prague 6, Czech Republic
| | - Miloslav Kincl
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 16206 Prague 6, Czech Republic
| | - Daniel Horak
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 16206 Prague 6, Czech Republic
| | - Julien Autebert
- Macromolecules and Microsystems in Biology and Medicine, Institute Curie, UMR 168, 26 Rue d'Ulm, 75005 Paris, France
| | - Jean-Louis Viovy
- Macromolecules and Microsystems in Biology and Medicine, Institute Curie, UMR 168, 26 Rue d'Ulm, 75005 Paris, France
| | - Zuzana Bilkova
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 53210 Pardubice, Czech Republic.
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Amchova P, Kucerova J, Giugliano V, Babinska Z, Zanda MT, Scherma M, Dusek L, Fadda P, Micale V, Sulcova A, Fratta W, Fattore L. Enhanced self-administration of the CB1 receptor agonist WIN55,212-2 in olfactory bulbectomized rats: evaluation of possible serotonergic and dopaminergic underlying mechanisms. Front Pharmacol 2014; 5:44. [PMID: 24688470 PMCID: PMC3960502 DOI: 10.3389/fphar.2014.00044] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Accepted: 02/25/2014] [Indexed: 11/13/2022] Open
Abstract
Depression has been associated with drug consumption, including heavy or problematic cannabis use. According to an animal model of depression and substance use disorder comorbidity, we combined the olfactory bulbectomy (OBX) model of depression with intravenous drug self-administration procedure to verify whether depressive-like rats displayed altered voluntary intake of the CB1 receptor agonist WIN55,212-2 (WIN, 12.5 μg/kg/infusion). To this aim, olfactory-bulbectomized (OBX) and sham-operated (SHAM) Lister Hooded rats were allowed to self-administer WIN by lever-pressing under a continuous [fixed ratio 1 (FR-1)] schedule of reinforcement in 2 h daily sessions. Data showed that both OBX and SHAM rats developed stable WIN intake; yet, responses in OBX were constantly higher than in SHAM rats soon after the first week of training. In addition, OBX rats took significantly longer to extinguish the drug-seeking behavior after vehicle substitution. Acute pre-treatment with serotonin 5HT1B receptor agonist, CGS-12066B (2.5-10 mg/kg), did not significantly modify WIN intake in OBX and SHAM Lister Hooded rats. Furthermore, acute pre-treatment with CGS-12066B (10 and 15 mg/kg) did not alter responses in parallel groups of OBX and SHAM Sprague Dawley rats self-administering methamphetamine under higher (FR-2) reinforcement schedule with nose-poking as operandum. Finally, dopamine levels in the nucleus accumbens (NAc) of OBX rats did not increase in response to a WIN challenge, as in SHAM rats, indicating a dopaminergic dysfunction in bulbectomized rats. Altogether, our findings suggest that a depressive-like state may alter cannabinoid CB1 receptor agonist-induced brain reward function and that a dopaminergic rather than a 5-HT1B mechanism is likely to underlie enhanced WIN self-administration in OBX rats.
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Affiliation(s)
- Petra Amchova
- Central European Institute of Technology, Masaryk University Brno, Czech Republic ; Department of Pharmacology, Faculty of Medicine, Masaryk University Brno, Czech Republic
| | - Jana Kucerova
- Central European Institute of Technology, Masaryk University Brno, Czech Republic ; Department of Pharmacology, Faculty of Medicine, Masaryk University Brno, Czech Republic
| | - Valentina Giugliano
- Section of Neuroscience and Clinical Pharmacology, Department of Biomedical Sciences, University of Cagliari Monserrato, Italy
| | - Zuzana Babinska
- Central European Institute of Technology, Masaryk University Brno, Czech Republic ; Department of Pharmacology, Faculty of Medicine, Masaryk University Brno, Czech Republic
| | - Mary T Zanda
- Section of Neuroscience and Clinical Pharmacology, Department of Biomedical Sciences, University of Cagliari Monserrato, Italy
| | - Maria Scherma
- Section of Neuroscience and Clinical Pharmacology, Department of Biomedical Sciences, University of Cagliari Monserrato, Italy
| | - Ladislav Dusek
- Institute of Biostatistics and Analyses of Faculty of Medicine, Masaryk University Brno, Czech Republic
| | - Paola Fadda
- Section of Neuroscience and Clinical Pharmacology, Department of Biomedical Sciences, University of Cagliari Monserrato, Italy ; Center of Excellence "Neurobiology of Addiction," University of Cagliari Monserrato, Italy ; National Institute of Neuroscience (INN), University of Cagliari Monserrato, Italy
| | - Vincenzo Micale
- Central European Institute of Technology, Masaryk University Brno, Czech Republic
| | - Alexandra Sulcova
- Central European Institute of Technology, Masaryk University Brno, Czech Republic
| | - Walter Fratta
- Section of Neuroscience and Clinical Pharmacology, Department of Biomedical Sciences, University of Cagliari Monserrato, Italy ; Center of Excellence "Neurobiology of Addiction," University of Cagliari Monserrato, Italy ; National Institute of Neuroscience (INN), University of Cagliari Monserrato, Italy
| | - Liana Fattore
- Center of Excellence "Neurobiology of Addiction," University of Cagliari Monserrato, Italy ; CNR Institute of Neuroscience-Cagliari, National Research Council-Italy Monserrato, Italy
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Mojzikova R, Koralkova P, Holub D, Zidova Z, Pospisilova D, Cermak J, Striezencova Laluhova Z, Indrak K, Sukova M, Partschova M, Kucerova J, Horvathova M, Divoky V. Iron status in patients with pyruvate kinase deficiency: neonatal hyperferritinaemia associated with a novel frameshift deletion in the PKLR gene (p.Arg518fs), and low hepcidin to ferritin ratios. Br J Haematol 2014; 165:556-63. [PMID: 24533562 DOI: 10.1111/bjh.12779] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [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: 10/25/2013] [Accepted: 12/18/2013] [Indexed: 01/19/2023]
Abstract
Pyruvate kinase (PK) deficiency is an iron-loading anaemia characterized by chronic haemolysis, ineffective erythropoiesis and a requirement for blood transfusion in most cases. We studied 11 patients from 10 unrelated families and found nine different disease-causing PKLR mutations. Two of these mutations - the point mutation c.878A>T (p.Asp293Val) and the frameshift deletion c.1553delG (p.(Arg518Leufs*12)) - have not been previously described in the literature. This frameshift deletion was associated with an unusually severe phenotype involving neonatal hyperferritinaemia that is not typical of PK deficiency. No disease-causing mutations in genes associated with haemochromatosis could be found. Inappropriately low levels of hepcidin with respect to iron loading were detected in all PK-deficient patients with increased ferritin, confirming the predominant effect of accelerated erythropoiesis on hepcidin production. Although the levels of a putative hepcidin suppressor, growth differentiation factor-15, were increased in PK-deficient patients, no negative correlation with hepcidin was found. This result indicates the existence of another as-yet unidentified erythroid regulator of hepcidin synthesis in PK deficiency.
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Affiliation(s)
- Renata Mojzikova
- Department of Biology, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
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Svobodova Z, Kucerova J, Autebert J, Horak D, Bruckova L, Viovy JL, Bilkova Z. Application of an improved magnetic immunosorbent in an Ephesia chip designed for circulating tumor cell capture. Electrophoresis 2013; 35:323-9. [DOI: 10.1002/elps.201300196] [Citation(s) in RCA: 13] [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] [Received: 04/19/2013] [Revised: 05/31/2013] [Accepted: 06/01/2013] [Indexed: 01/09/2023]
Affiliation(s)
- Zuzana Svobodova
- Department of Biological and Biochemical Sciences; Faculty of Chemical Technology, University of Pardubice; Pardubice Czech Republic
| | - Jana Kucerova
- Department of Biological and Biochemical Sciences; Faculty of Chemical Technology, University of Pardubice; Pardubice Czech Republic
| | - Julien Autebert
- Macromolecules and Microsystems in Biology and Medicine; Institute Curie; Paris France
| | - Daniel Horak
- Institute of Macromolecular Chemistry; Academy of Sciences of the Czech Republic; Prague Czech Republic
| | - Lenka Bruckova
- Department of Biological and Biochemical Sciences; Faculty of Chemical Technology, University of Pardubice; Pardubice Czech Republic
| | - Jean-Louis Viovy
- Macromolecules and Microsystems in Biology and Medicine; Institute Curie; Paris France
| | - Zuzana Bilkova
- Department of Biological and Biochemical Sciences; Faculty of Chemical Technology, University of Pardubice; Pardubice Czech Republic
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Lanikova L, Kucerova J, Indrak K, Divoka M, Issa JP, Papayannopoulou T, Prchal JT, Divoky V. β-Thalassemia due to intronic LINE-1 insertion in the β-globin gene (HBB): molecular mechanisms underlying reduced transcript levels of the β-globin(L1) allele. Hum Mutat 2013; 34:1361-5. [PMID: 23878091 DOI: 10.1002/humu.22383] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [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: 04/15/2013] [Accepted: 07/10/2013] [Indexed: 12/17/2022]
Abstract
We describe the molecular etiology of β(+)-thalassemia that is caused by the insertion of the full-length transposable element LINE-1 (L1) into the intron-2 of the β-globin gene (HBB). The transcript level of the affected β-globin gene was severely reduced. The remaining transcripts consisted of full-length, correctly processed β-globin mRNA and a minute amount of three aberrantly spliced transcripts with a decreased half-life due to activation of the nonsense-mediated decay pathway. The lower steady-state amount of mRNA produced by the β-globin(L1) allele also resulted from a reduced rate of transcription and decreased production of full-length β-globin primary transcripts. The promoter and enhancer sequences of the β-globin(L1) allele were hypermethylated; however, treatment with a demethylating agent did not restore the impaired transcription. A histone deacetylase inhibitor partially reactivated the β-globin(L1) transcription despite permanent β-globin(L1) promoter CpG methylation. This result indicates that the decreased rate of transcription from the β-globin(L1) allele is associated with an altered chromatin structure. Therefore, the molecular defect caused by intronic L1 insertion in the β-globin gene represents a novel etiology of β-thalassemia.
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Affiliation(s)
- Lucie Lanikova
- Department of Biology, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic; Departments of Medicine, Pathology and Genetics, University of Utah and Medical Service, George E. Wahlen Department of Veterans Affairs Medical Center, Salt Lake City, Utah
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Swierczek S, Nausova J, Jelinek J, Liu E, Roda P, Kucerova J, Jarosova M, Urbankova H, Indrak K, Prchal JT, Divoky V. Concomitant JAK2 V617F-positive polycythemia vera and B-cell chronic lymphocytic leukemia in three patients originating from two separate hematopoietic stem cells. Am J Hematol 2013; 88:157-8. [PMID: 23280542 DOI: 10.1002/ajh.23362] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Revised: 11/01/2012] [Accepted: 11/05/2012] [Indexed: 12/20/2022]
Affiliation(s)
- Sabina Swierczek
- Division of Hematology; Department of Medicine; University of Utah; School of Medicine and VAH; Salt Lake City; Utah; 84132
| | - Jitka Nausova
- Department of Biology; Faculty of Medicine and Dentistry; Palacky University; 77515; Olomouc; Czech Republic
| | - Jaroslav Jelinek
- Fels Institute for Cancer Research and Molecular Biology; Temple University School of Medicine; Philadelphia; Pennsylvania; 19140
| | - Enli Liu
- Texas Children's Cancer Center; and Center for Cell and Gene Therapy; Baylor College of Medicine; Houston; Texas; 77030
| | - Paul Roda
- Geisinger Hazleton Cancer Center; Hazleton; Pennsylvania; 18201
| | - Jana Kucerova
- Department of Biology; Faculty of Medicine and Dentistry; Palacky University; 77515; Olomouc; Czech Republic
| | - Marie Jarosova
- Department of Hemato-oncology; Faculty of Medicine Palacky University and University Hospital; 77520; Olomouc; Czech Republic
| | - Helena Urbankova
- Department of Hemato-oncology; Faculty of Medicine Palacky University and University Hospital; 77520; Olomouc; Czech Republic
| | - Karel Indrak
- Department of Hemato-oncology; Faculty of Medicine Palacky University and University Hospital; 77520; Olomouc; Czech Republic
| | - Josef T. Prchal
- Division of Hematology; Department of Medicine; University of Utah; School of Medicine and VAH; Salt Lake City; Utah; 84132
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Kucerova J, Horvathova M, Mojzikova R, Belohlavkova P, Cermak J, Divoky V. New mutation in erythroid-specific delta-aminolevulinate synthase as the cause of X-linked sideroblastic anemia responsive to pyridoxine. Acta Haematol 2011; 125:193-7. [PMID: 21252495 DOI: 10.1159/000322870] [Citation(s) in RCA: 4] [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] [Subscribe] [Scholar Register] [Received: 08/24/2010] [Accepted: 11/18/2010] [Indexed: 11/19/2022]
Abstract
BACKGROUND/AIMS Congenital sideroblastic anemias (SA) are characterized by the presence of ringed sideroblasts in the bone marrow. The most common form is X-linked SA, which results from mutations in erythroid-specific δ-aminolevulinate synthase (ALAS2), the first enzyme in heme biosynthesis. In addition, autosomal recessive mutations in the erythroid-specific mitochondrial transporter SLC25A38 and glutaredoxin 5 (GLRX5) have recently been identified in SA patients with isolated erythroid phenotype. MATERIALS AND METHODS We studied 5 young males with congenital SA from the Czech Republic. Mutation analysis was performed on the complete coding regions of 3 candidate genes (ALAS2, SLC25A38 and GLRX5), and the enzyme activity of ALAS2 was measured by a continuous spectrophotometric assay. RESULTS We found the previously published R452H and R452C ALAS2 mutations in 3 patients. A novel K156E substitution in ALAS2 was discovered in 1 pyridoxine-responsive patient. The functional study showed that this substitution severely decreases ALAS2 enzyme activity. In 1 pyridoxine-refractory patient, no mutations were detected in ALAS2, SLC25A38 or GLRX5. CONCLUSION Our report extends the list of known ALAS2 mutations, with the addition of a novel K156E substitution that is responsive to pyridoxine treatment and contributes to the general knowledge of congenital SA cases characterized worldwide.
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Affiliation(s)
- Jana Kucerova
- Department of Biology, Faculty of Medicine, Palacky University, Olomouc, Czech Republic
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Kucerova J, Vrskova D, Sulcova A. Impact of repeated methamphetamine pretreatment on intravenous self-administration of the drug in males and estrogenized or non- estrogenized ovariectomized female rats. Neuro Endocrinol Lett 2009; 30:663-670. [PMID: 20035259] [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] [Subscribe] [Scholar Register] [Received: 06/18/2009] [Accepted: 10/25/2009] [Indexed: 05/28/2023]
Abstract
OBJECTIVE The female animals were already recorded to respond differently to methamphetamine (MET) abuse than males. This gender dissimilarity may be caused by the influence of estral cycles and different susceptibility to behavioural sensitization. METHODS Influences of gender and pre-exposure to MET were studied in the rat model of MET intravenous self-administration (IVSA). The fixed ratio (FR) paradigm was employed in male rats (M) and estrogenized (F-ESTR) and non-estrogenized ovariectomized female rats (F-OVX) either pre-exposed or not-exposed to MET pretreatment. RESULTS In rats that were not pre-exposed to MET, F-ESTR self-administered more MET infusions than each of the other groups, but F-OVX self-administered less than each of the other groups; the same trend was apparent in the MET pretreated groups. MET pre-exposure decreased subsequent MET IVSA in all groups except F-OVX. CONCLUSION Thus, pre-exposure to MET and the loss of inherent estrogen in females notably decreased the intake of MET by rats, suggesting that abuse liability was reduced. Estrogen's effects on MET self-administration here correspond with accumulating evidence of stronger behavioural responses of females to drugs of abuse.
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Affiliation(s)
- Jana Kucerova
- Department of Pharmacology, Faculty of Medicine, Masaryk University, Brno, Czech Republic.
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Lucas R, Marinova M, Kucerova J, Vetrokova M. HRM practice in emerging economies: a long way to go in the Slovak hotel industry? The International Journal of Human Resource Management 2004. [DOI: 10.1080/0958519042000238446] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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