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Dabek J, Kulach A, Smolka G, Wilczok T, Scieszka J, Gasior Z. Expression of genes encoding kinin receptors in peripheral blood mononuclear cells from patients with acute coronary syndromes. Intern Med J 2008; 38:892-6. [DOI: 10.1111/j.1445-5994.2008.01718.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Niedzielska I, Sypniewski D, Mazurek U, Wilczok T, Niedzielski Z, Wziatek-Kuczmik D. Differential diagnosis of gingival hyperplasia based on IFN-gamma-stimulated gene expression using RT-PCR. Folia Biol (Praha) 2007; 53:23-6. [PMID: 17328839] [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: 05/14/2023]
Abstract
Epulus is a benign gingival tumour of unknown aetiopathogenesis. Classification is inconsistent, and standard management strategies are lacking. Epuli are generally believed to be inflammatory rather than neoplastic lesions. The literature does not present any molecular analysis of the tumour characteristics. The purpose of the present study was to compare benign (epulus) and malignant (cancer) gingival hyperplasias with regard to the activity of the genes of apoptosis, proliferation, and inflammation using RT-PCR. The investigation involved 70 patients with epuli and 15 patients with gingival squamous cell carcinoma. Each subject had specimens collected from the tumour, tissue margin (incision line), and healthy tissue. Molecular investigations by RT-PCR were used to evaluate expression levels of the genes associated with apoptosis (Bcl-2, Bax, Bcl-2/Bax), proliferation (H3 histone), and inflammatory processes (IFN-gamma, IFNgamma-R1, IFN-gammaR2, IFN-gammaR1/IFN-gammaR2). Correlations have been disclosed between apoptosis and proliferation genes expression in giant cell epuli and high-differentiated gingival squamous cell carcinoma. In RT-PCR molecular analysis, giant cell epulus shows characteristics of a neoplastic lesion, while other epulus types seem to be inflammatory tumours.
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Affiliation(s)
- I Niedzielska
- Department of Maxillofacial Surgery, Medical University of Silesia, Katowice, Poland.
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3
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Machnik G, Sypniewski D, Wydmuch Z, Cholewa K, Mazurek U, Wilczok T, Smorag Z, Pacha J. Sequence analysis of proviral DNA of porcine endogenous retroviruses. Transplant Proc 2006; 37:4610-4. [PMID: 16387182 DOI: 10.1016/j.transproceed.2005.10.115] [Citation(s) in RCA: 5] [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: 03/30/2005] [Indexed: 11/21/2022]
Abstract
Among all species analyzed, the domestic pig seems to be the most appropriate organ donor for xenotransplantation. Porcine endogenous retroviruses (PERVs) are present in genomes of all pigs and are capable of infecting human cells in vitro thus posing a serious threat for xenotransplantation procedures. Despite the abundant distribution of PERVs integrated with porcine genome, the majority of PERV proviral DNA is not capable of expressing viral proteins unless seriously mutated. The aim of the study was to analyze PERV genome for mutations. The study was performed on blood samples from 146 pigs. Long-range polymerase chain reaction (Long-PCR) was performed with primer sets designed within long terminal repeats (LTRs). Long-PCR products of different molecular weights were obtained: 530 bp (33.1% of individuals), 580 bp (76.7%), 933 bp (100%), and 2900 bp (59.8%). Amplimers of 7200 bp were absent in 12.8% of individuals, indicating the lack of intact proviral DNA. Sequence analysis showed that most PERV proviral DNA was significantly mutated, thus suggesting the inability to express functional viral RNA; however, it cannot be ruled out that compensatory recombination processes could occur enabling replication of defective proviruses.
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Affiliation(s)
- G Machnik
- Department of Biotechnology and Genetic Engineering, Medical University of Silesia, Sosnowiec, Poland.
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Niedzielska I, Niedzielski Z, Sypniewski D, Mazurek U, Wilczok T, Dabek J. Preliminary report of expression of bax in oral cavity pathologies. Folia Biol (Praha) 2006; 52:190-3. [PMID: 17184597] [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: 05/13/2023]
Abstract
Bax is considered one of major effectors of apoptosis--programmed cell death. Immunohistochemical analysis of in vitro patterns of bax expression was mostly investigated in mammalian cell lines and tissues. The present study is the first in vivo molecular analysis of bax expression in oral cavity pathologies. The study population consisted of 45 patients with hyperplasia, neoplasm in situ malignancy, and carcinoma. Biopsies were taken from incision line, tumour section, and healthy tissue. bax expression was investigated depending on the site of biopsy material sampling and final histopathology result. No statistically significant difference was demonstrated in bax expression between four hyperplasia subgroups. However, statistically significant differences in bax expression were found between the three basic study groups (P = 0.001). Statistically significant differences in bax expression were demonstrated depending on tissue collection site (P = 0.0002). We conclude that differences in bax expression may play a role in the pathogenesis of neoplastic disease.
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Affiliation(s)
- I Niedzielska
- Department of Maxillofacial Surgery, Medical University of Silesia, Katowice, Poland.
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5
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Marek B, Kajdaniuk D, Mazurek U, Janczewska-Kazek E, Kos-Kudla B, Strzalka B, Fila A, Niedziolka D, Beniowski M, Ostrowska Z, Borgiel-Marek H, Kajdaniuk J, Sieminska L, Nowak M, Wilczok T, Pakula D, Filipczyk P. TGF-beta1 mRNA expression in liver biopsy specimens and TGF-beta1 serum levels in patients with chronic hepatitis C before and after antiviral therapy. J Clin Pharm Ther 2005; 30:271-7. [PMID: 15896245 DOI: 10.1111/j.1365-2710.2005.00644.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
BACKGROUND AND OBJECTIVE Transforming growth factor (TGF)-beta1 is the best-characterized profibrogenic cytokine. TGF-beta1 increases the production of extracellular matrix proteins and their receptors and inhibits the synthesis of matrix degrading proteolytic enzymes. We undertook this study to simultaneously evaluate the effect of interferon alpha 2b plus ribavirin therapy on TGF-beta1 daily serum levels and on mRNA TGF-beta1 expression in liver biopsy specimens from 60 patients with chronic hepatitis C. METHODS Serum levels of TGF-beta1 were measured by ELISA. The levels of the RNAs in liver biopsy specimens were measured by quantitative reverse transcriptase polymerase chain reaction. After treatment, patients were divided into two groups: 34 responders [undetectable hepatitis C virus (HCV)-RNA, normal ALT levels, decrease in histology activity index compared with pretreatment liver biopsy] and 26 non-responders (detectable HCV-RNA, elevated ALT levels, no decrease in the histology activity index). RESULTS AND DISCUSSION In patients with hepatitis C, the 'responders' to the antiviral treatment showed significant decreases in both mean daily serum TGF-beta1 levels and mRNA TGF-beta1 expression in the liver biopsy specimens. The 'non-responders' serum TGF-beta1 concentrations did not change significantly, but the mRNA TGF-beta1 expression did. CONCLUSION Both serum TGF-beta1 concentration and mRNA TGF-beta1 expression in liver biopsy specimens may be useful as prognostic markers in patients with hepatitis C undergoing antiviral therapy.
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Affiliation(s)
- B Marek
- Division of Pathophysiology, Department of Pathophysiology & Endocrinology, Medical University of Silesia, Zabrze, Poland.
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Abstract
Telomerase is a reverse transcriptase that adds repetitive telomere sequences to the end of chromosomes, which is thought to be essential for cellular immortality and oncogenesis. The enzyme consists of three subunits: human telomerase reverse transcriptase (hTERT), human telomerase RNA (hTR), and telomerase protein 1 (TP1). The hTERT subunit determines the activity of telomerase as an enzyme and is detected in most human tumors and regenerative cells. But many studies have revealed that hTR and TP1 are expressed constitutively. This results suggest that the hTR and TP1 subunits may be potentially good markers of endogenous RNA control. Endometrial dating was determined from the pathomorphology of the endometrium and classified into normal proliferative endometrium, endometrial hyperplasia (simple, complex, and atypical), and endometrial adenocarcinoma. The analysis of the expression of the hTERT, TP1, and hTR telomerase subunits was performed by a quantitative polymerase chain reaction method, based on fluorescent TaqMan methodology (ABI Prism 7,700 Sequence Detection System) capable of measuring fluorescence in real time. The aim of the study was an analysis of the expression profiles of genes encoding hTR and TP1 telomerase subunits in normal endometrium, endometrial hyperplasia, and adenocarcinoma for the estimation of the possibility of once application in endogenous RNA control of gene analysis in the endometrium. The nonparametric Mann-Whitney U test and analysis of variance Friedman test were used to evaluate the variation in telomerase subunit mRNA level between normal endometrium, and endometrial hyperplasia and adenocarcinoma. The results confirm the hTR subunit expression as a good marker of endogenous control in quantitative analysis of gene transcription in endometrial tissue. TP1 subunit transcriptions have not been detected constitutively in our study.
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Affiliation(s)
- M Paul-Samojedny
- Department of Molecular Biology and Genetics, Medical University of Silesia, Katowice, Poland.
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7
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Paul-Samojedny M, Witek A, Samojedny A, Witkowska A, Wilczok T. Human telomerase RNA as endogenous control in endometrial tissue. Int J Gynecol Cancer 2005. [DOI: 10.1136/ijgc-00009577-200503000-00026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Telomerase is a reverse transcriptase that adds repetitive telomere sequences to the end of chromosomes, which is thought to be essential for cellular immortality and oncogenesis. The enzyme consists of three subunits: human telomerase reverse transcriptase (hTERT), human telomerase RNA (hTR), and telomerase protein 1 (TP1). The hTERT subunit determines the activity of telomerase as an enzyme and is detected in most human tumors and regenerative cells. But many studies have revealed that hTR and TP1 are expressed constitutively. This resuts suggest that the hTR and TP1 subunits may be potentially good markers of endogenous RNA control. Endometrial dating was determined from the pathomorphology of the endometrium and classified into normal proliferative endometrium, endometrial hyperplasia (simple, complex, and atypical), and endometrial adenocarcinoma. The analysis of the expression of the hTERT, TP1, and hTR telomerase subunits was performed by a quantitative polymerase chain reaction method, based on fluorescent TaqMan methodology (ABI Prism 7 700 Sequence Detection System) capable of measuring fluorescence in real time. The aim of the study was an analysis of the expression profiles of genes encoding hTR and TP1 telomerase subunits in normal endometrium, endometrial hyperplasia, and adenocarcinoma forthe estimation of the possibility of once application in endogenous RNA control of gene analysis in the endometrium. The nonparametric Mann–Whitney U test and analysis of variance Friedman test were used to evaluate the variation in telomerase subunit mRNA level between normal endometrium, and endometrial hyperplasia and adenocarcinoma. The results confirm the hTR subunit expression as a good marker of endogenous control in quantitative analysis of gene transcription in endometrial tissue. TP1 subunit transcriptions have not been detected constitutively in our study.
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Niedzielska I, Sypniewski D, Mazurek U, Drugacz J, Wilczok T. Expression of BCL-2 and BAX in epulises. Int J Oral Maxillofac Surg 2005. [DOI: 10.1016/s0901-5027(05)81423-7] [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: 10/24/2022]
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Urbanek T, Skop B, Wiaderkiewicz R, Wilczok T, Ziaja K, Lebda-Wyborny T, Pawlicki K. Smooth Muscle Cell Apoptosis in Primary Varicose Veins. Eur J Vasc Endovasc Surg 2004; 28:600-11. [PMID: 15531194 DOI: 10.1016/j.ejvs.2004.09.008] [Citation(s) in RCA: 29] [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] [Accepted: 09/07/2004] [Indexed: 01/31/2023]
Abstract
OBJECTIVES One of the important factors responsible for vessel wall remodelling is programmed cell death. In the paper the role of smooth muscle cell (SMC) apoptosis in primary varicose veins (PVV) is investigated. MATERIAL AND METHODS Vein specimens were obtained from 40 patients with PVV. In each case proximal and distal (upper crural) great saphenous veins (GSV) were harvested. Morphometric computer assessed quantitative evaluation of SMCs, collagen and elastin content was carried out. Apoptotic cells were detected by TUNEL assay. The levels of p53, BAX, BCLl-2 and p21 mRNA expression were assessed by real time RT-QPCR and the presence of respective proteins in the vessel wall was confirmed by immunohistochemistry. RESULTS In the proximal GSV segments a significant increase of p53, p21 and BCL-2 mRNA levels was found in PVV patients. In the distal segments BAX and BCL-2 expression levels were higher. Taking into account the patient age, elevated p53 mRNA expression level was noticed in the distal incompetent GSVs of young PVV patients. In this group a statistically significant increase in the apoptotic index (APIx) within the vein media was found which correlated positively with p53 mRNA expression level. There was no increase of the apoptotic activity in elderly patients that led to the structural changes increase. In proximal GSV segments, despite SMC amount reduction or presence of structural changes in perivalvular wall region, no increase of the APIx with was noticed. CONCLUSIONS P53-related apoptosis is one of the regulatory mechanisms of vein wall homeostasis maintenance. During varicose vein development its activation is related to the early stages of the disease. In the further course, the down-regulation of the SMC apoptosis within the vein media leads to the structural changes increase. The reduction of the SMC population corresponding to an increase of p21 expression in proximal saphenous vein segments suggests that the cell cycle disturbances may lead to the 'weakness' of the proximal GSV wall. Valve injury is not the only factor leading to the varicose veins occurrence.
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Affiliation(s)
- T Urbanek
- Department of General and Vascular Surgery, Medical University of Silesia, ul. Ziołowa 45/47, Katowice 40-635, Poland.
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Muc-Wierzgon M, Nowakowska-Zajdel E, Kokot T, Kozowicz A, Zubelewicz B, Klakla K, Mazurek U, Cholewa K, Wilczok T, Wierzgon J, Sosada K. Genetic disregulation of gene coding tumor necrosis factor alpha receptors (TNFalpha Rs) in colorectal cancer cells. J Exp Clin Cancer Res 2004; 23:651-60. [PMID: 15743036] [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] [Indexed: 05/02/2023]
Abstract
The expression of TNF ligand by malignant cells might be a mechanism for tumour immune escape. Genetic disregulation of gene coding TNF receptors was observed in neoplastic disease by an increased number of receptors on tumour cells and ligand-receptor activity. It might cause tumour proliferation and metastatic potential. Structure of TNF receptors influences TNF activity in vivo and structure of TNF R2 gene may suggest post-transcription modification based on alternative splicing. The aim of the study was to analyse the expression of gene coding TNF receptors R2 and R2/R7 (without exon 7) by estimation of mRNA expression of colorectal cancer cells in comparison with surrounding tissue free from neoplastic infiltration and searched for differently spliced TNFalphaR2/R7 isoforms. The study included fifty four patients with histopathologically confirmed adenocarcinoma (Stage III according to the AJC TNM Classification). Tissue samples removed from the tumour region were obtained from colorectal cancer patients undergoing surgical treatment. The samples were divided into two parts. The first one--was routinely examined histopathologically, the second one--was used for RNA extraction and the number of TNF and its receptors mRNA copies were subsequently quantified. The TNF and TNFRII genes expression were estimated based on the number of mRNA copies on 1 microg total RNA. The presence of TNFR2 and TNFR2/R7 isoforms in tumour, normal and metastatic cells was observed. The highest number of mRNA TNF copies and over expressed TNF genes were investigated and significantly noticed in metastatic cells (lymph nodes). The decreased number of TNFR2/R7 mRNA copies in metastatic lymph nodes secondarily influenced the decreased TNF soluble receptors' concentration. In conclusion, the genetic disregulation observed in neoplastic disease usually concerns dysfunction of cytokines receptor genes.
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Affiliation(s)
- M Muc-Wierzgon
- Dept. and Teaching Ward of Internal Medicine, Silesian Medical University, Bytom, Poland
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Dworniczak S, Ziora D, Kapral M, Mazurek U, Niepsuj G, Rauer R, Wilczok T, Kozielski J. Human cytomegalovirus DNA level in patients with idiopathic pulmonary fibrosis. J Physiol Pharmacol 2004; 55 Suppl 3:67-75. [PMID: 15611595] [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] [Indexed: 05/01/2023]
Abstract
The objectives of the study were to estimate human cytomegalovirus (HCMV) DNA copy number in broncho-alveolar lavage cells, blood leukocytes, and serum of patients with idiopathic pulmonary fibrosis (IPF). The study groups consisted of 16 patients, newly diagnosed with IPF and never treated, (mean age 40.9 +/-11.0 yr; F/M-7/9) and in 16 adult healthy volunteers (mean age 36.8 +/-6.4 yr; F/M-4/12) used as controls. The HCMV DNA copy number was calculated by a Q-PCR method using TaqMan ABI PRISM 7700. We found that the prevalence of the HCMV DNA positive subjects in the patient group (75%) did not differ significantly from that in the control group (69%). We also found that in both patient and control groups the mean HCMV DNA copy number in BAL cells was significantly higher than that in blood leukocytes (log10=2.7 vs. 1.2 for patients and 2.8 vs. 0.9 for controls, respectively). However, a higher HCMV DNA copy number in blood serum was observed in IPF patients than in controls (log10=3.2 vs. 2.0, respectively). We conclude that the lungs play an important role in the human pathobiology of cytomegalovirus sustenance.
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Affiliation(s)
- S Dworniczak
- Department of Lung Diseases and Tuberculosis, Medical University of Silesia, Zabrze, Poland.
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Kowalczyk J, Domal-Kwiatkowska D, Mazurek U, Zembala M, Gruchlik A, Noski J, Zembala M, Wilczok T. Post-transcriptional modifications of VEGF-A mRNA in dilated cardiomyopathy. Int J Cardiol 2004. [DOI: 10.1016/s0167-5273(04)90042-3] [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: 11/25/2022]
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Abstract
Mutations in sodium channel alpha-subunit gene (SCN5A) result in multiple arrhythmic syndromes, including long QT3 (LQT3), Brugada syndrome (BS), an inherited cardiac conduction defect, sudden unexpected nocturnal death syndrome (SUNDS) and sudden infant death syndrome (SIDS), constituting a spectrum of disease entities termed Na+ channelopathies. These diseases are allelic disorders, if not the same disease with variable penetrance and variable modifiers worldwide. Interestingly, death occurs during sleep in all of these disorders, suggesting a common mechanism. To date, mutational analyses have revealed about 103 distinct mutations in SCN5A, of which at least more than 30 mutations are associated with LQT3, whereas the rest of the mutations are affiliated with the remaining sodium channel disorders. The majority of these mutations are missense. However, other types such as deletions, insertions, frameshifts, nonsense and splice-donor errors have also been reported.
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Affiliation(s)
- E Moric
- Department of Molecular Biology, Biochemistry and Biopharmacy, Medical University of Silesia, ul. Narcyzów 1, Sosnowiec, Poland.
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Olejek A, Mazurek U, Michalska A, Kusmierz D, Wilczok T. TGF-BETA1 AND TGF-BETA RECEPTORS IN VULVAR CANCER. Int J Gynecol Cancer 2003. [DOI: 10.1136/ijgc-00009577-200303001-00388] [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: 11/04/2022] Open
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15
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Mazurek U, Olejek A, Fila A, Dariusz D, Lukasik A, Wilczok T, Poreba R, Michalski B. CORRELATION OF EXPRESSION AND ALTERNATIVE SPLICE MRNA ISOFORMS OF THE VEGF, FLT-1, FLK-1 AND PATTERNS OF CERVICAL VASCULAR. Int J Gynecol Cancer 2003. [DOI: 10.1136/ijgc-00009577-200303001-00213] [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: 11/04/2022] Open
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Mazurek U, Michalsi B, Olejek A, Fila A, Kusmierz D, Lukasik A, Wilczok T, Poreba R. OCCURRENCE OF EXPRESSION AND ALTERNATIVE SPLICE MRNA ISOFORMS OF THE VEGF, FLT-1, FLK-1 AND PROGRESSION OF SIL AND CERVICAL CANCER. Int J Gynecol Cancer 2003. [DOI: 10.1136/ijgc-00009577-200303001-00214] [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: 11/03/2022] Open
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17
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Skop B, Urbanek T, Bursig H, Ziaja K, Wilczok T. The effect of prolonged ischaemia and cryopreservation on the cell viability of human aortic and femoral artery allografts. Folia Histochem Cytobiol 2003; 40:217-8. [PMID: 12056653] [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: 02/25/2023] Open
Abstract
The viability of the human arterial allograft cells depends on the time and method of vessel procurement and storage. In this study, an evaluation of the effect of the duration of 4 degrees C ischaemia and cryopreservation on human aortic and femoral artery allograft viability was performed. After the isolation of arterial wall cells, the identification of cultured cells was performed using mRNA analysis for estimation of smooth-muscle markers of differentiation: desmin and heavy-caldesmon. The viability of cells from the medial layer of the aortic wall ranged from 74 to 90% (61-79% for femoral arteries). Cold ischaemia time (from harvesting until the beginning of the preparation) is a statistically significant factor influencing smooth muscle cell viability. Smooth muscle cells represented the majority of live cell population.
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Affiliation(s)
- B Skop
- Department of Molecular Biology, Biochemistry and Biopharmacy, Medical University of Silesia, Sosnowiec, Poland.
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Bednarek I, Czajka M, Wilczok T. Efficiency of lipofection of adherent cells is limited by apoptosis. Folia Histochem Cytobiol 2003; 40:133-4. [PMID: 12056611] [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: 02/25/2023] Open
Abstract
Stability of gene expression and transfection efficiency plays the main role in the application of gene transfer method. In somatic cell gene delivery, expression of the gene product is limited by the function of the cell to which it is delivered. In the present study analyzing the lipofected adherent cells, we have shown that lower level of transgene: beta-galactosidase activity at later time period correlated with decrease in cell viability, which was shown to be due to apoptosis. Apoptosis following DNA uptake occurred only when DNA was present during lipofection.
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Affiliation(s)
- I Bednarek
- Department of Molecular Biology, Biochemistry and Biopharmacy, Medical University of Silesia, Sosnowiec, Poland.
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19
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Dzierzewicz Z, Orchel A, Parfiniewicz B, Weglarz L, Stojko J, Swierczek-Zieba G, Wilczok T. The delay of anoikis due to the inhibition of protein tyrosine dephosphorylation enables the maintenance of normal rat colonocyte primary culture. Folia Histochem Cytobiol 2003; 41:223-8. [PMID: 14677762] [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: 04/27/2023] Open
Abstract
Apoptosis induced by detachment of cells from the extracellular matrix (anoikis) appears to be one of the main obstacles in attempts to establish long-term primary culture of normal colonocytes. In the present study, the dynamics of molecular events related to apoptosis of isolated normal rat colonocytes was investigated. The whole colonic crypts were isolated using collagenase/dispase digestion technique. DNA fragmentation typical for the apoptosis and the apoptotic morphology of cells were observed already at the end of their isolation. Considerable increase in caspase-3 activity was noted during the first two hours of cell cultivation. Delaying of apoptosis by treatment of cells with sodium orthovanadate, the specific protein tyrosine phosphatase inhibitor, was found to be possible. It may facilitate long-term culture of intestinal epithelial cells.
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Affiliation(s)
- Z Dzierzewicz
- Department of Molecular Biology, Biochemistry and Biopharmacy, Medical University of Silesia, Sosnowiec, Poland.
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Weglarz L, Dzierzewicz Z, Orchel A, Szczerba J, Jaworska-Kik M, Wilczok T. Biological activity of Desulfovibrio desulfuricans lipopolysaccharides evaluated via interleukin-8 secretion by Caco-2 cells. Scand J Gastroenterol 2003; 38:73-9. [PMID: 12608468] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Abstract
BACKGROUND Although Desulfovibrio desulfuricans species, besides existing in the natural environment, is also found in the human digestive tract, no information is currently available on its role in the intestinal ecosystem and its activity in regard to the intestinal mucosa. Bacterial products (lipopolysaccharides, LPSs) are generally known for their ability to trigger inflammatory response by stimulating cytokine expression, such as interleukin-8 (IL-8). METHODS Colonic Caco-2 cells were exposed to LPSs isolated from the soil type and intestinal wild strains of D. desulfuricans bacteria. The amount of IL-8 secreted was measured by ELISA. The effects of sodium butyrate and cell preincubation with sodium butyrate on the IL-8 secretion in response to LPSs were also analysed. RESULTS LPSs from D. desulfuricans down-regulated IL-8 secretion by the cells. Incubation of these cells with butyrate alone resulted in a dose-dependent stimulation of IL-8 release. Butyrate also modulated IL-8 secretion by cells stimulated with LPSs. CONCLUSIONS Our findings suggest the lack of inflammatory response of intestinal mucosa in the presence of LPSs of D. desulfuricans. This response can be conditioned by the natural bacterial product, butyrate, which exerts a stimulatory effect on the IL-8 secretion and modulates its release in response to LPSs.
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Affiliation(s)
- L Weglarz
- Dept. of Molecular Biology, Biochemistry and Biopharmacy, Medical University of Silesia, Sosnowiec, Poland.
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Bilińska B, Pilawa B, Zawada Z, Wylegała E, Wilczok T, Dontsov AE, Sakina NL, Ostrovsky MA, Ilyasova VB. Electron spin resonance investigations of human retinal pigment epithelium melanosomes from young and old donors. Spectrochim Acta A Mol Biomol Spectrosc 2002; 58:2257-2264. [PMID: 12212751 DOI: 10.1016/s1386-1425(01)00695-3] [Citation(s) in RCA: 13] [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] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Electron spin resonance (ESR) examinations of human retinal pigment epithelium melanosomes isolated from eyes of young and old donors were carried out. The examined ESR signal was a single line, which is characteristic for free radicals of eumelanin o-semiquinones. The content of free radicals related to melanosomes dry weight for samples from older donors (ages over 45 years) were higher than for sample from younger donors (between 14 and 22 years). Simultaneously, the content of free radicals calculated for one melanosome is constant and does not depend on age. The homogeneous broadening of the recorded ESR lines shows that there are no isolated spin packets in all investigated melanin samples. Slow spin-lattice (T1 approximately 10(-5) s) and fast spin-spin (T2 approximately 10(-8) s) relaxation processes occur in these samples. Saturation of the ESR lines at low microwave power was measured. High concentration of free radicals in melanosome samples was responsible for the fast spin-spin relaxation process.
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Affiliation(s)
- Barbara Bilińska
- Department of Physical Pharmacy, Medical University of Silesia, Sosnowiec, Poland.
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Stepień K, Wilczok A, Zajdel A, Dzierzega-Lecznar A, Wilczok T. Peroxynitrite mediated linoleic acid oxidation and tyrosine nitration in the presence of synthetic neuromelanins. Acta Biochim Pol 2002; 47:931-40. [PMID: 11996116] [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: 02/24/2023]
Abstract
Peroxynitrite-mediated linoleic acid oxidation and tyrosine nitration were analysed in the presence of synthetic model neuromelanins: dopamine (DA) -melanin, cysteinyldopamine (CysDA) -melanin and various DA/CysDA copolymers. The presence of melanin significantly decreased the amount of 3-nitrotyrosine formed. This inhibitory effect depended on the type and concentration of melanin polymer. It was found that incorporation of CysDA-derived units into melanin attenuated its protective effect on tyrosine nitration induced by peroxynitrite. In the presence of bicarbonate, the melanins also inhibited 3-nitrotyrosine formation in a concentration dependent manner, although the extent of inhibition was lower than in the absence of bicarbonate. The tested melanins inhibited peroxynitrite-induced formation of linoleic acid hydroperoxides, both in the absence and in the presence of bicarbonate. In the presence of bicarbonate, among the oxidation products appeared 4-hydroxynonenal (HNE). CysDA-melanin inhibited the formation of HNE, while DA-melanin did not affect the aldehyde level. The results of the presented study suggest that neuromelanin can act as a natural scavenger of peroxynitrite.
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Affiliation(s)
- K Stepień
- Department of Molecular Biology, Biochemistry and Biopharmacy, Faculty of Pharmacy, Medical University of Silesia, Sosnowiec, Poland.
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Mazurek U, Pastucha E, Orchel J, Bierzyńska-Macyszyn G, Cholewa K, Stadnicki A, Wilczok T. Concentration profile of mRNA of kinine B1 and B2 receptors in the evaluation of colon pathologies. Folia Histochem Cytobiol 2002; 39 Suppl 2:181-2. [PMID: 11820597] [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: 02/23/2023] Open
Abstract
Colon pathologies involve the activation of a number of inflammation mediators: cytokines, prostanoids and kinines. The expression patterns of the genes associated with their activation may provide a very sensitive marker of the physiological condition of the cells. This paper demonstrates certain statistically significant differences (p = 0.008) between the expression patterns of kinine B1 and B2 receptor encoding genes for colitis ulcerosa and a control group. The ratio of kinine B1/B2 concentrations changes significantly, on the average from 1.3 for a tissue assessed as healthy to 6.6 for colitis ulcerosa.
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Affiliation(s)
- U Mazurek
- Department of Molecular Biology, Biochemistry and Biopharmacy, Medical University of Silesia, Katowice, Poland.
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24
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Mazurek U, Witek A, Olejek A, Paul M, Skałba P, Wilczok T. Expression of telomerase genes as potential marker of neoplastic changes. Folia Histochem Cytobiol 2002; 39 Suppl 2:183-4. [PMID: 11820598] [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: 02/23/2023] Open
Abstract
We conducted a quantitative analysis of TERT, TP1 and hTR mRNA expression in various types of endometrial hyperplasia in perimenopausal women, taking advantage of the real-time PCR assay. All women underwent hysterectomy for gynecological reasons. Endometrial dating was determined from the patomorphology of the endometrium and classified into endometrial hyperplasia: simplex, complex and atypica. Our data suggest that only hTR was observed in each normal and hyperplastic endometrium specimens, suggesting that this factor constitutively expressed in endometrium. The results obtained indicate that the expression activity of the TERT subunit changes but not significantly, depending on the stage of development of the hyperplasia.
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Affiliation(s)
- U Mazurek
- Department of Molecular Biology, Biochemistry and Biopharmacy, Medical University of Silesia, Katowice.
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25
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Orchel J, Mazurek U, Bierzyńska-Macyszyn G, Cholewa K, Pastucha E, Stadnicki A, Wilczok T. Expression of the histone H3 gene in the evaluation of cellular proliferation in colitis ulcerosa. Folia Histochem Cytobiol 2002; 39 Suppl 2:187-8. [PMID: 11820600] [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: 02/23/2023] Open
Abstract
A comparison of the number of mRNA molecules of histone H3 in 1 microg total RNA extracted from colon sections sampled during colonoscopy was used to evaluate cellular proliferation activity in the rectum and sigmoid, in normal tissue and in colitis ulcerosa. Samples with similar intensity of the disease were selected for the study. Statistically significant differences between both groups of rectal sections were found in the expression of histone H3 encoding genes. The statistically significant result (p = 0.0485) indicates a more active division of cells in the healthy rectum, with no statistically significant differences in the sigmoid (p=0.9575).
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Affiliation(s)
- J Orchel
- Department of Molecular Biology, Biochemistry and Biopharmacy, Medical University of Silesia, Katowice, Poland
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26
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Witek A, Mazurek U, Paul M, Bierzyńska-Macyszyn G, Wilczok T. Quantitative analysis of estrogen receptor mRNA in human endometrium throughout the menstrual cycle using a real-time reverse transcription-polymerase chain reaction assay. Folia Histochem Cytobiol 2002; 39 Suppl 2:116-8. [PMID: 11820566] [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: 02/23/2023] Open
Abstract
We conducted a quantitative analysis of ERalpha and ERbeta mRNA expression in normal human endometrium throughout the menstrual cycle in regular menstruating premenopausal women, taking advantage of this real-time PCR assay. Endometrial dating was determined from the histology of the endometrium and classified into: proliferative endometrium and secretory endometrium. Both ERalpha and ERbeta mRNA expression were detected in all endometrial samples at both proliferative and secretion phase. However ERalpha mRNA expression level was higher than that of ERbeta specially during proliferative phase. These results suggest that estrogenic effects occur predominantly through ERalpha than ERbeta.
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Affiliation(s)
- A Witek
- Department of Gynecological Endocrinology, Medical University of Silesia, Katowice, Poland.
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27
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Witek A, Mazurek U, Paul M, Bierzyńska-Macyszyn G, Wilczok T. Quantitative analysis of estrogen receptor-alpha and -beta and exon 5 splicing variant mRNA in endometrial hyperplasia in perimenopausal women. Folia Histochem Cytobiol 2002; 39 Suppl 2:119-21. [PMID: 11820567] [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: 02/23/2023] Open
Abstract
We used real-time reverse transcription-polymerase chain reaction (QRT-PCR) to detect wild-type ERalpha and ERbeta and their isoforms as well as exon 5 splicing variant mRNA ERalpha in various types of endometrial hyperplasia in perimenopausal women. Our data suggest that the exon 2 and 7 deletion ERalpha mRNA isoforms are present in endometrial tissue undergoing various hyperplastic states. Wild type ERbeta mRNA and their isoforms 2, 4, 5, 6 were observed in each type of assessed endometrial specimens, and ERalpha/delta5 was found only in hyperplasia complex group.
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Affiliation(s)
- A Witek
- Department of Gynecological Endocrinology, Medical University of Silesia, Katowice, Poland.
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Dzierzewicz Z, Kwapisz I, Orchel A, Hudyka K, Wilczok T. Quantification of P21 mRNA in biopsy specimens of colon tissue at different stages of neoplastic transformation. Folia Histochem Cytobiol 2002; 39 Suppl 2:169-70. [PMID: 11820590] [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: 02/23/2023] Open
Abstract
Induction of the P21 protein is an integral part of cell growth arrest associated with the cellular response to senescence or damage. Changes in the P21 protein level are often observed in tumour cells and it is suggested, that they correlate with malignancy. We studied the P21 gene expression at the mRNA level in biopsy specimens from colitis ulcerosa, adenomas and adenocarcinomas using TaqMan assay. Our results showed, that quantity of the P21 transcript was evidently lower in the cases with adenocarcinomas than in the cases with colitis ulcerosa or adenomas.
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Affiliation(s)
- Z Dzierzewicz
- Department of Molecular Biology, Biochemistry and Biopharmacy, Medical University of Silesia, Sosnowiec, Poland.
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29
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Mazurek U, Bierzyńska-Macyszyn G, Gola J, Orchel J, Słowiński J, Wilczok T. BCL2 and BAX mRNA concentration profile in fibrillary astrocytoma. Folia Histochem Cytobiol 2002; 39 Suppl 2:179-80. [PMID: 11820596] [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: 02/23/2023] Open
Abstract
A high level of the BCL2 protein and the lack of apoptosis promoting protein BAX are beginning to be treated as markers of cellular resistance to anti-neoplastic drugs. The object of the study were specimens from stereotactic biopsy of Astrocytoma fibrillare in the central brain area, inaccessible to conventional surgery. The cytological preparations have been evaluated with histopathological and immunohistochemical methods in order to determine the origin of the tumour and assess cell proliferation activity. The molecular analysis conducted in order to determine the sensitivity of the tumour to radio- or chemotherapy included the determination of the number of mRNA BCL2 alpha and beta molecules and of BAX in 1 microg total RNA obtained from microscope slides. A higher expression of BAX than of BCL2-alpha is a prognosis for a positive result of chemo- or radiotherapy. A trace number of mRNA BCL2-beta molecules and a smaller number of mRNA BCL2-alpha molecules than mRNA BAX is a good prognosis for therapy.
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Affiliation(s)
- U Mazurek
- Department of Molecular Biology, Biochemistry and Biopharmacy, Medical University of Silesia, Katowice, Poland.
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Michalski B, Mazurek U, Olejek A, Graniczka M, Loch T, Poreba R, Wilczok T. Quantitative RT-PCR assay for mRNA of VEGF and histone H4 in the determination of proliferative and angiogenic activity in vulvar pathology. Folia Histochem Cytobiol 2002; 39 Suppl 2:108-9. [PMID: 11820562] [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: 02/23/2023] Open
Abstract
Proliferative and angiogenic activity of tissue specimens taken from women with various vulvar pathologies were evaluated by determining the number of mRNA VEGF molecules and H4 histone mRNA molecules, by means of the QRT-PCR (TaqMan) technique. Following a cluster analysis the results, where normalised. Euclidean distances were used, all the cases were classified into three groups of pathologies. Group I included low degree vulvar pathologies, group II included high degree vulvar pathologies and group III included vulvar pathologies with high proliferative and angiogenic activity. Significant differences were found in the proliferative and angiogenic activity between groups I and III, and between groups II and III, while no statistically significant differences were found between groups I and II.
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Affiliation(s)
- B Michalski
- Department of Obstetrics and Gynecology, Medical University of Silesia, Tychy, Poland.
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31
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Witek A, Mazurek U, Paul M, Wilczok T. Differentiation strategies of alternative splicing variants mRNA estrogen receptor-alpha. Folia Histochem Cytobiol 2002; 39 Suppl 2:114-5. [PMID: 11820565] [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: 02/23/2023] Open
Abstract
From the clinical point of view recognizing the concentrations and type profile of isoforms could be of significant practical importance. The aim of the study is designed QRT-PCR reaction to assess profile of mRNA ER-alpha and their isoforms. Theoretical part of the study was made according to computer program and available Genbank database. To detect a isoform one of the primer was designed to hybridize within exon-border linked in alternative splicing. The study presents the differentiation strategies in isoforms coming about as the alternative splicing result. Designed oligonucleotide probes and primers allow to distinguish mRNA isoforms of ER-alpha and their quantification in assessed tissues.
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Affiliation(s)
- A Witek
- Department of Gynecological Endocrinology, Medical University of Silesia, Katowice, Poland.
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32
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Zubelewicz B, Muc-Wierzgoń M, Wierzgoń J, Romanowski W, Mazurek U, Wilczok T, Podwinska E. Genetic disregulation of gene coding tumor necrosis factor alpha receptors (TNF alpha Rs) in follicular thyroid cancer--preliminary report. J BIOL REG HOMEOS AG 2002; 16:98-104. [PMID: 12144133] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
UNLABELLED TNF alpha receptors participate in programmed cell death. TNF R2 efficiently assists TNF R7 effects by ligand passing. Structure of TNF alpha receptors influences TNF activity in vivo and the structure of TNF R2 gene may suggest post-transcription modification based on alternative splicing. The aim of the study was to analyse the expression of gene coding TNF alpha receptors R2 and R7 by estimation of mRNA expression of differentiated thyroid carcinomas in comparison to surrounding tissue free from neoplastic infiltration and search for differently spliced TNF alpha R2/R7 isophorms. The study included seven patients with histopathologically confirmed follicular thyroid cancer. Tissue samples removed from tumor region were obtained from the follicular thyroid cancer patients undergoing surgical treatment. The samples were divided into two parts. The first one was routinely examined histopathologically, the second was used for RNA extraction and the number of TNF and its receptors mRNA copies were subsequently quantified. RESULTS 1) The presence of TNF alpha expression was observed in all examined samples, in contrast to TNF R1 expression; 2) The high level of TNF alpha expression was noted both for typical and sought TNF R2/R7 isoforms and 3) A considerable number of samples displayed higher levels of TNF R2 isoforms than TNF R2/R7 mRNA expression. Genetic disregulation observed in neoplastic disease usually concerns dysfunction of cytokines receptor genes.
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MESH Headings
- Adenocarcinoma, Follicular/genetics
- Adenocarcinoma, Follicular/pathology
- Adult
- Alternative Splicing
- Antigens, CD/genetics
- Carcinoma/genetics
- Carcinoma/pathology
- Exons
- Female
- Gene Expression Regulation, Neoplastic
- Humans
- Male
- Middle Aged
- Protein Isoforms/genetics
- Receptors, Tumor Necrosis Factor/genetics
- Receptors, Tumor Necrosis Factor, Type I
- Receptors, Tumor Necrosis Factor, Type II
- Thyroid Neoplasms/genetics
- Thyroid Neoplasms/pathology
- Tumor Cells, Cultured
- Tumor Necrosis Factor-alpha/genetics
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Affiliation(s)
- B Zubelewicz
- Department of Internal Medicine, Silesian Medical University, Bytom, Poland.
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Paul M, Mazurek U, Witek A, Graniczka M, Wilczok T. [Histone H3 gene expression level as markers of hyperplasia simplex of endometrium]. Ginekol Pol 2001; 72:1434-8. [PMID: 11883292] [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: 02/24/2023] Open
Abstract
SUBJECT The excessive proliferative activity of endometrial cells drives to hyperplasia, via states: simplex hyperplasia, complex and atypical hyperplasia, and finally preneoplastic state may arise. New molecular markers and their ability to differentiate physiological and pathological states are described. DESIGN The aim of this study was to evaluate the usefulness of histone H3 gene expression level as a marker of hyperplasia of endometrium. MATERIAL AND METHODS The level of H3 mRNA was estimated using RT-QPCR method in proliferative phase (n = 5) and endometrial hyperplasia simplex (n = 8). Differences in expression level of H3, were evaluated by Student's t-test (t-test for independent samples). RESULTS In our experiments the average mRNA H3 expression was significantly higher(p < 0.05, p = 0.03) in case of hyperplasia simplex in comparison to H3 expression in proliferative state of endometrium. CONCLUSION The results confirm advantage of estimation of H3 mRNA level as a marker of cell proliferation in endometrium.
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Affiliation(s)
- M Paul
- Katedry i Zakładu Biologii Molekularnej, Biochemii i Biofarmacji SLAM w Sosnowcu
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Witek A, Mazurek U, Paul M, Graniczka M, Skałba P, Wilczok T. [Quantitative (RT-QPCR) analysis of telomerase subunit in normal endometrial tissues]. Ginekol Pol 2001; 72:1543-8. [PMID: 11883312] [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: 02/24/2023] Open
Abstract
Telomerase is a specialized ribonucleoprotein polymerase that elongates telomeres. To clarify the molecular mechanisms through which telomerase is activated in normal endometrium, we examined the expression profiles of each telomerase subunit in this tissues. A total of 22 normal human endometrium in various menstrual phases were examined for the expression of each telomerase subunit (hTERT, hTR, TP-1) using RT-QPCR. The hTERT as well as TP-1 subunit had higher expression levels in proliferative than secretory phase endometrium. Expression levels of hTR did not change during menstrual cycle. Our data showed the strong correlation between the level of expression of telomerase in human endometrium and phase of menstrual cycle.
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Affiliation(s)
- A Witek
- Katedry i Kliniki Endokrynologii Ginekologicznej SlAM w Katowicach
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35
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Dzierzewicz Z, Cwalina B, Jaworska-Kik M, Weglarz L, Wilczok T. Susceptibility to antibiotics and biochemical properties of Desulfovibrio desulfuricans strains. Acta Pol Pharm 2001; 58:439-45. [PMID: 12197616] [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] [Indexed: 02/26/2023]
Abstract
Susceptibility to several antibiotics and biochemical properties of intestinal and soil strains of Desulfovibrio desulfuricans bacteria were investigated using the tests: ATB ANA, Sceptor Anaerobic MIC/ID and API ZYM. It was demonstrated that the D. desulfuricans strains were resistant to penicillin, cefoxitin, clindamycin, metronidazole, erythromycin, rifampicin and teicoplanin. The strains initially susceptible to imipenem became resistant to this drug following 72 h incubation with it. Of 25 analyzed antibiotics there was none that after 72 h action on the bacteria was effective in relation to all of the investigated strains. The differences in susceptibility of D. desulfuricans strains to antibiotics were not associated with the strains' biochemical properties.
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Affiliation(s)
- Z Dzierzewicz
- Department of Molecular Biology, Biochemistry and Biopharmacy, Medical University of Silesia, Sosnowiec, Poland
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36
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Olejek A, Mazurek U, Orchel J, Rzempołuch J, Wilczok T. [The assessment of expression of kininogen and bradykinin receptors genes in different vulvar pathologies by QPCR (TaqMan)]. Ginekol Pol 2001; 72:717-22. [PMID: 11757483] [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: 02/23/2023] Open
Abstract
OBJECTIVES In different vulvar pathologies inflammatory process and pain are often observed. In these processes, kinins, released from kininogen, play an important role. Their effects are mediated by at least two types of bradykinin receptors--B1 and B2. B1 receptor appears in certain pathological states, B2 is widely distributed in normal tissues. The expression of genes coding kininogen, B1 and B2 receptors can be a very sensitive marker of tissue pathology. DESIGN In the present study, the analysis of expression of genes coding kininogen, B1 and B2 was performed. The relation between the analysed genes expression and the pathology stage was analysed. MATERIALS AND METHODS The specimens from condylomata accuminata, vulvar cancer and surgical margin were analysed. The number of DNA and mRNA copies of beta-actine, kininogen, B1 and B2 were examined basing on Q-PCR standard curves for beta-actine by use of Perkin Elmer-kit and the sequence detector ABI PRISM 7700-Taq Man application. RESULTS In condylomata accuminata the high expression of mRNA of kininogen, B1 and B2 was found, while in vulvar cancer tissue, the expression of analysed genes was low. In the tissue from the tumour center, the lowest kinin genes expression was stated. CONCLUSIONS The absence of kininogen and B2 mRNA expression characterised vulvar cancer tissue. The profile of expression of kininogen and its receptor genes can be a useful marker in the assessment of vulvar cancer surgical margin.
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Affiliation(s)
- A Olejek
- Oddziału Klinicznego Połoznictwa i Ginekologii w Bytomiu Sl.A.M. w Katowicach
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37
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Olejek A, Mazurek U, Kuśmierz D, Rzempołuch J, Wilczok T. [The quantitative analysis of E6 HPV and P53 genes expression by QPCR (TaqMan) in the assessment of surgical treatment range in vulvar carcinoma induced by HTV infection]. Ginekol Pol 2001; 72:723-7. [PMID: 11757484] [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: 02/23/2023] Open
Abstract
OBJECTIVES Human Papilloma Virus (HPV) infections especially 16 and 18 are risk factors for squamous cell vulvar cancer. E6 protein of HPV joins the tumor suppressor protein P53 and promotes its degradation. This is one of the possible mechanisms of viral oncogenes action. DESIGN In this study the quantitative analysis of mRNA copies E6 HPV 18 and mRNA P53 expression in vulvar cancer tissue was performed. The expression of analysed genes was applied in the assessment of surgical treatment range. MATERIALS AND METHODS The specimens from a 26 year old woman with vulvar squamous cell cancer stage II FIGO treated surgically modo Way were analysed. The number of DNA and mRNA copies E6 HPV and P53 were examined basing on Q-PCR standard curves for beta-actine by use of Perkin Elmer-kit and the sequence detector ABI PRISM 7700-Taq Man application. RESULTS The overexpression of mRNA E6 HPV and P53 in analysed specimens was found. The highest number of mRNA copies in cancer tissue was ascertained. In lichen sclerosus and lymphonoduli tissue lower number of analysed copies was found. CONCLUSION The quantitative analysis of E6 HPV and P53 genes expression can be useful in the assessment of surgical treatment range in vulvar cancer and can also be used as a prognostic marker.
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Affiliation(s)
- A Olejek
- Oddziału Klinicznego Połoznictwa i Ginekologii w Bytomiu Sl.A.M w Katowicach
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Świerczek-Zięba G, Lodowska J, Mazurek U, Kurkiewicz S, Wilczok T. METOPROLOL EFFECT ON FATTY ACIDS COMPOSITION OF CELL MEMBRANE PHOSPHOLIPIDS. Sci Pharm 2001. [DOI: 10.3797/scipharm.aut-01-18] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
It is quite well known that β-blockers influence the stability of cell membranes, but the effect of metoprolol on the composition of cell membrane lipids is not established. On the other hand, synchronous culture of Chlorella vulgaris cells, which consists of cells brought to the same developmental stage by cycling lighting, provides a convenient biological model in unidirectional analyses aimed at assessment of effects of xenobiotics on cells. Advantages of the model include short life cycle and possibility to control metabolic processes of the cells across the broad range. We assessed the effect of metoprolol on fatty acids composition of cell membrane phospholipids in consecutive life cycle stages of Chlorella vulgaris. Lipids were extracted using a chlorofonn/methanol method. Phospholipids were precipitated from the chloroform phase with cold acetone and following centrifugation the pellet of phospholipids was hydrolyzed in alkaline solution. Fatty acids were extracted with petroleum ether and then methylated with BF3-methanol. This protocol produced methyl esters of fatty acids which were subjected to GC-MS analysis. Metoprolol had no effect on the number of progeny cells of Chlorella vulgaris throughout their life cycle at the concentration range tested (5x10-5 M, 5x10-6 M, 5x10-7 M). However, we observed stimulation of biological activity of Chlorclla cells as measured by spectrophotomctry at λ=680 nm. Metoprolol, at the highest concentration, increased phospholipids content in mother cells. Simultaneously, relative amount and saturation level of thc fatty acids remained constant.
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39
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Mazur W, Mazurek U, Jurzak M, Wilczok T, Gonciarz M, Gonciarz Z. Short-term changes of serum IL-2 and IL-6 induced by interferon alpha-2b in patients with chronic hepatitis C. Med Sci Monit 2001; 7 Suppl 1:151-6. [PMID: 12211711] [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: 02/26/2023] Open
Abstract
BACKGROUND The standard therapy of chronic hepatitis C with interferon alpha (IFN alpha) and ribavirin has established but limited efficacy. The prognostic factors of treatment are still under investigation. IL-2 and IL-6 are key cytokines involved in activation of B and T lymphocytes and thus in humoral and cellular responses; they are also deeply involved in generation and maintenance of inflammatory processes. The aim of the study was to evaluate the short-term influence of INF alpha-2b on serum IL-2 and IL-6 levels in sustained responders (SR) and non-responders (NR). MATERIAL AND METHODS Altogether 12 patients (7 males and 5 females) chronically infected with HCV (anti-HCV positive, HCV-RNA positive by PCR) were enrolled to the study. Patients were treated with IFN 3 MU tiw for 6 months and then they were followed for another 6 months. Five patients responded to the treatment (sustained responders-SR)-Group I, seven patients did not respond (non-responders-NR)-Group II. Serum concentrations of IL-2 and IL-6 were assessed by ELISA before ['0'] and at 1st ['1'], 2nd ['2'], 3rd ['3'], 6th ['4'] and 12th ['5'] hour after the first IFN injection. CONCLUSIONS Interferon alpha-2b induced short-term increase of serum IL-2 concentrations in SR but not in NR. Serum IL-6 level increased both in SR and NR but this effect was more pronounced and persisted longer in sustained responders.
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Affiliation(s)
- W Mazur
- Department of Internal Medicine, Medical University of Silesia, St. Barbara's District Hospital, Plac Medyków 1, 41-200 Sosnowiec, Poland
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Jurzak M, Mazurek U, Mazur W, Wdowiak E, Gonciarz Z, Wilczok T. Increased AST and GGT activity as marker of RT-PCR inhibition in RNA extracts from peripheral blood. Med Sci Monit 2001; 7 Suppl 1:231-5. [PMID: 12211726] [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: 02/26/2023] Open
Abstract
The presence of HCV RNA in PMBC, with simultaneous absence of the virus in the plasma (7.8%), suggests that blood is better material for HCV RNA detection than plasma or serum in the diagnostic procedures of patients with chronic hepatitis C as well as in monitoring the antiviral therapy. We studied 111 patients with chronic hepatitis C (anti-HCV+) and elevated level of at least one biochemical marker: AST, ALAT, GGT, AP and bilirubin. Inhibition of amplification was 2% in plasma and 34% in whole blood samples. We applied modification of extraction to reduce the inhibitory effect on PCR, by introducing additional purification of the RNA extract in the Chomczyński method. After our modification of extraction was applied, inhibition was reduced to 1%. In attempt to identify such inhibitory markers that would label the samples, in which additional RNA extract purification should be applied, we analysed the activity of AST and ALAT enzymes, the key markers for parenchymal liver damage; GGT and AP, the markers for cholestatic hepatitis as well as bilirubin. We observed that the increased GGT and AST activities were correlated with the inhibition of RT-PCR. This correlation was statistically significant; for AST (Mann-Whitney test p = 0.09654 and Kolmogorow-Smirnow test p = 0.01543) and for GGT (Mann-Whitney test p = 0.02419 and Kolmogorow-Smirnow test p = 0.01921).
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Affiliation(s)
- M Jurzak
- Department of Molecular Biology, Biochemistry and Biopharmacy, Medical University of Silesia, ul. Narcyzów 1, 41-206 Sosnowiec, Poland
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Mazur W, Machniak M, Mazurek U, Jurzak M, Wilczok T, Gonciarz Z. Interferon versus interferon and UDCA combined therapy in chronic hepatitis C. Med Sci Monit 2001; 7 Suppl 1:157-64. [PMID: 12211712] [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: 02/26/2023] Open
Abstract
BACKGROUND Interferon alpha (IFN) has been shown to have established efficacy in the treatment of chronic hepatitis C but its effectiveness is unsatisfactory. Combined therapies with IFN and other antiviral or immunomodulatory drugs are under evaluation. A combination of interferon alpha and ursodeoxycholic acid UDCA has been reported to give better results than interferon alone. The aim of the study was to assess the efficacy of IFN monotherapy versus IFN and UDCA therapy in patients with chronic hepatitis C. MATERIAL AND METHODS We studied 38 patients (25 males and 13 females) chronically infected with HCV (anti-HCV positive, HCV-RNA positive by PCR). Seventeen of them were treated with IFN 3 MU tiw for 6 months--Group I. The remaining 21 patients were treated with IFN, at the same dosage, plus UDCA (10 mg/kg/day) also for 6 months--Group II. Patients were followed for 6 months. 6 months after the end of therapy, laboratory biochemical parameters, HCV viremia and proportion as well as time to relapse were assessed. CONCLUSIONS In contrast to previous reports we did not find any differences neither in proportion of HCV reactivation nor in the time of its appearance among patients treated because of chronic hepatitis B with IFN alone or with IFN plus UDCA combined therapy. We also did not find any difference in initial and late response to the treatments in both groups.
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Affiliation(s)
- W Mazur
- Department of Internal Medicine, Medical University of Silesia, St. Barbara's District Hospital, Plac Medyków 1, 41-200 Sosnowiec, Poland
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Strzałka B, Mazurek U, Mazur W, Krysiak R, Gonciarz Z, Wilczok T. Assessment of HBV DNA levels in human plasma and peripheral blood mononuclear cells by TaqMan Q-PCR assay. Med Sci Monit 2001; 7 Suppl 1:226-30. [PMID: 12211725] [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: 02/26/2023] Open
Abstract
Hepatitis B virus DNA (HBV DNA) levels were quantitatively determined by a TaqMan quantitative polymerase chain reaction (TaqMan Q-PCR) in the plasma and in the peripheral blood mononuclear cells (PBMCs) of 120 patients with biopsy proven chronic hepatitis. The number of HBV DNA copies ranged from 10(1) to 10(10)/ml of the blood. There were no significant differences between plasma and PBMCs levels of HBV DNA in neither of HBV infected alone nor HCV co-infected patients. The number of HBV DNA copies was higher in the both compartments in blood of patients infected with HBV only, in comparison to those co-infected with HBV and HCV. In patients chronic hepatitis caused by both viruses (co-infection), decrease of HBV DNA copies in the PBMCs preceded its disappearance from the plasma. Our results suggest that assessment of HBV DNA in PBMCs does not produce important advantage in diagnosis of chronic hepatitis, and it seems to have the prognostic significance of positive outcome among the patients with chronic hepatitis induced by HBV and HCV co-infection. Our results also indirectly indicate that HCV may reciprocally inhibit replication of HBV.
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Affiliation(s)
- B Strzałka
- Department of Molecular Biology, Biochemistry and Biopharmacy, Medical University of Silesia, ul. Narcyzów 1, 41-206 Sosnowiec, Poland
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Mazurek U, Jurzak M, Gola J, Mazur W, Szuścik T, Krysiak R, Gonciarz Z, Wilczok T. Dynamics of HCV replication in patients with chronic hepatitis C during interferon and ribavirin combined therapy. Med Sci Monit 2001; 7 Suppl 1:236-40. [PMID: 12211727] [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: 02/26/2023] Open
Abstract
Objective of the present study was to determine the effect of combined therapy with interferon alfa-2b (3 MU; thrice weekly s.c.) and ribavirin (1200 mg daily p.o.) on the number of copies of positive and negative strands of the hepatitis C virus RNA (HCV RNA) in patients with biopsy-proven chronic hepatitis C. Number of copies of both strands was determined by a TaqMan reverse transcription quantitative polymerase chain reaction (TaqMan RT Q-PCR) in the whole blood before treatment, and 4, 12 or 24 weeks after introduction of the treatment. Before the treatment positive strand of HCV RNA was more frequently detectable and its level was higher compared to that of the negative strand. In several patients, we observed therapy-induced transient appearance or increase in the number of copies of the negative HCV RNA strand. As a result of 24-week treatment, the negative strand of HCV RNA was eliminated from the blood more effectively than the positive strand. Our results suggest that the assessment of dynamics of changes of the positive and negative strands levels of HCV RNA in interferon-naive patients with chronic hepatitis C may be useful in monitoring short-term effectiveness of combined antiviral therapy. They also indicate that TaqMan RT Q-PCR appears to be a valuable tool in monitoring the therapy in these patients.
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Affiliation(s)
- U Mazurek
- Department of Molecular Biology, Biochemistry and Biopharmacy, Medical University of Silesia, ul. Narcyzów 1, 41-206 Sosnowiec, Poland
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Michalski B, Mazurek U, Olejek A, Kuśmierz D, Poreba R, Witek A, Wilczok T. [Expression of VEGF, KDR, p53, E6 HPV16 and HPV18 in vulvar and cervix cancer]. Wiad Lek 2001; 53:240-6. [PMID: 10983377] [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] [Indexed: 02/17/2023]
Abstract
The aim of the study was a comparison of expression of angiogenesis genes: vascular endothelial growth factor (VEGF), KDR, suppressor gene p53, E6-HPV16 and HPV18, in tissue samples of normal, dystrophic, lymph nodes and malignant cancers of vulva and uterine cervix. The results demonstrate that molecular diagnostics of cancers using gene expression profiling indicates the definitive difference in expression profiles of aforementioned genes in tissues of the same malignancy.
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Affiliation(s)
- B Michalski
- Katedry i Oddziału Klinicznego, Połoznictwa i Ginekologii w Tychach.
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Olejek A, Mazurek U, Michalski B, Kuśmierz D, Orchel J, Witek A, Wilczok T. [Profiles of expression of genes coding kininogen and kinin receptors as a marker of tissue pathology in cervical cancer coexisting with HPV infection]. Wiad Lek 2001; 53:247-54. [PMID: 10983378] [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] [Indexed: 02/17/2023]
Abstract
Kinins are peptides involved in inflammatory processes, vascular permeability, proliferation and mitogenesis of tumor cells. The majority of kinins actions are mediated through an interaction with cell surface bradykinin receptors BR1 and BR2. Kinins precursor is kininogen (kng). The changes in proteins are initiated by changes in the expression of genes coding these proteins, thus can be a valuable diagnostic markers of malignant processes including cervical carcinoma. The paper presents an analysis of kininogen-kinins receptor genes expression in women treated surgically because of a carcinoma of uterine cervix. Among the studied women in 5 cases previously brachyHDR therapy was applied. In all studied cases HPV 18 infection and in 2 cases a co-infection HPV 16/18 by use of Consensus Primers MY09, MY 11 and type specific primers for HPV 16, 18 was ascertained. In RNA extracts the number of the mRNA copies for kiningen, BR1 and BR2 was assessed using QRT-PCR Taq Man. The higher expression of BR1 than BR2 was marked in the tissue with cancer cells. In the patients after brachytherapy higher expression of BR2 than BR1 mRNA was found. The higher BR1 expression was also shown in iliac lymph nodes in patients with active neoplastic process, opposite to the patients after brachytherapy in whom higher BR2 expression was ascertained. The lack of expression of kng mRNA was found only in 3 specimens. The high expression of kinin receptors especially BR1 in infiltrating carcinoma margin can be a marker of pathology intensity: proliferative potential of neoplasms cells or chronic inflammatory state in the presence of invasive carcinoma.
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Affiliation(s)
- A Olejek
- Oddziału Klinicznego Połoznictwa i Ginekologii w Bytomiu
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Czuba B, Pendzich J, Gola J, Mazurek U, Sławska H, Kamiński K, Wilczok T. [Prenatal diagnostics of Toxoplasma gondii invasion by quantitative method of PCR-TaqMann]. Wiad Parazytol 2001; 47 Suppl 1:91-7. [PMID: 16897958] [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] [Indexed: 05/11/2023]
Abstract
Routine serological diagnosis of toxoplasmosis provides high sensitivity, but not high specificity. The high sensivity combined with high specifity offered by PCR-TaqMann as well as the degree of infection led us to investigate the presence and levels of T. gondii DNA in amniotic fluid, maternal and neonatal blood in cases of pregnancy where infection with this agent was suspected. Samples of amniotic fluid and blood were taken from pregnant women. Postnatal blood samples were also taken from their infants. Presence and levels of toxoplasma DNA was investigated using PCR-TaqMann. PCR products were detected by electrophoresis on polyacrylamide gel. The PCR-TaqMann test is highly sensitive, specific and useful method allowing detection of the parasite genome and assessement of its level.
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Affiliation(s)
- B Czuba
- Katedra i Klinika Patologii Ciazy i Rozrodczości w Zabrzu, Slaskiej Akademii Medycznej, 41-800 Zabrze, ul. Janika 18
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Mazur W, Mazurek U, Jurzak M, Wilczok T, Bułanowski Z, Gonciarz Z. Positive and negative strands of HCV-RNA in sera and peripheral blood mononuclear cells of chronically hemodialyzed patients. Med Sci Monit 2001; 7:108-15. [PMID: 11208504] [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: 02/19/2023] Open
Abstract
BACKGROUND Hepatitis C virus (HCV) RNA can be detected in sera and peripheral blood mononuclear cells (PBMC) of patients undergoing chronic hemodialysis. However, the natural course of HCV infection in this group of patients is not fully known. Although the exact mechanism of HCV replication is not completely explained, there is evidence that HCV replicate through synthesis of complementary negative (-) RNA strand, whereas positive (+) RNA strand serves as a template. Thus, the detection of negative HCV-RNA strand can be regarded as a marker of ongoing viral replication. MATERIAL AND METHODS We investigated the prevalence of (+) and (-) strands of HCV-RNAs in sera and PBMC of 45 chronically hemodialyzed patients using PCR methods. We also determined HCV genotypes and their subtypes by Inno-LIPA method. RESULTS Eight (17.8%) of analyzed patients were anti-HCV positive. In this group, we detected HCV-RNA (+) strands in sera and PBMC in 2 and 4 cases respectively, whereas HCV-RNA (-) ones were found in PBMC of 4 patients. Among the remaining 37 anti-HCV negative patients we found HCV-RNA positive strands in sera and PBMC in 2 and 3 cases respectively, whereas HCV-RNA negative strand was present in PBMC in one of them. CONCLUSIONS Our results indicate that HCV actively replicate in PBMC in chronically hemodialyzed patients. In number of patients HCV-RNAs can be detected only in PBMC without concomitant presence of viremia or anti-HCV in sera. We did not find any correlation between genotypes of HCV and presence of HCV-RNAs strands in PBMC of the patients.
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Affiliation(s)
- W Mazur
- Clinical Department of Internal Medicine, Silesian Medical University, Wojewódzki Szpital Specjalistyczny Nr 5, Plac Medyków 1, 41-200 Sosnowiec
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Sławska H, Pendzich J, Czuba B, Mazurek U, Gola J, Wilczok T, Kamiński K. [Detection of Toxoplasma gondii DNA by PCR in mother's blood, amniotic fluid and child's blood in selected cases of pathological pregnancy]. Wiad Parazytol 2001; 47 Suppl 1:99-105. [PMID: 16897959] [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] [Indexed: 05/11/2023]
Abstract
Prenatal screening of Toxoplasma gondii infection is controversial. The diagnosis is based on serological tests detecting IgM and IgG antibodies against T. gondii, but interpretation of these tests results is often confusing. It is commonly made retrospectively when serological screening indicates a possibility of recent infection. Most women have antibodies against T. gondii and serial testing is required only in monitoring of pregnancies where initial screening is negative. The introduction of Polymerase Chain Reaction (PCR) assay for detection of Toxoplasma gondii DNA in selected cases of pathologic pregnancies has permitted a more accurate and faster diagnosis of congenital toxoplasmosis infections.
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Affiliation(s)
- H Sławska
- Katedra i Klinika Patologii Ciazy i Rozrodczości w Zabrzu, Slaskiej Akademii Medycznej 41 - 800 Zabrze, ul. Janika 18
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Stepień K, Wilczok A, Zajdel A, Dzierzega-Lecznar A, Wilczok T. Peroxynitrite mediated linoleic acid oxidation and tyrosine nitration in the presence of synthetic neuromelanins. Acta Biochim Pol 2000. [DOI: 10.18388/abp.2000_3948] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Peroxynitrite-mediated linoleic acid oxidation and tyrosine nitration were analysed in the presence of synthetic model neuromelanins: dopamine (DA) -melanin, cysteinyldopamine (CysDA) -melanin and various DA/CysDA copolymers. The presence of melanin significantly decreased the amount of 3-nitrotyrosine formed. This inhibitory effect depended on the type and concentration of melanin polymer. It was found that incorporation of CysDA-derived units into melanin attenuated its protective effect on tyrosine nitration induced by peroxynitrite. In the presence of bicarbonate, the melanins also inhibited 3-nitrotyrosine formation in a concentration dependent manner, although the extent of inhibition was lower than in the absence of bicarbonate. The tested melanins inhibited peroxynitrite-induced formation of linoleic acid hydroperoxides, both in the absence and in the presence of bicarbonate. In the presence of bicarbonate, among the oxidation products appeared 4-hydroxynonenal (HNE). CysDA-melanin inhibited the formation of HNE, while DA-melanin did not affect the aldehyde level. The results of the presented study suggest that neuromelanin can act as a natural scavenger of peroxynitrite.
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Dzierzewicz Z, Orchel A, Swierczek-Zieba G, Latocha M, Cwalina B, Wilczok T. Normal colonocytes in primary culture--an experimental model for molecular pharmacology and biology of large intestine. Acta Pol Pharm 2000; 57 Suppl:23-5. [PMID: 11293254] [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] [Indexed: 02/19/2023]
Abstract
A simple method of whole intestinal crypts isolation from rat's colonic tissue has been developed. Culture of viable epithelial cells (colonocytes) was obtained from intact crypts using method providing colonocytes for apoptosis. Satisfactory results have been obtained if the crypts were isolated using collagenase I. Under conditions applied, spontaneous release of the colonocytes took place. Liberated cells underwent almost immediate adhesion to microcarrier surface. The primary culture of normal colonocytes indicating metabolic activity for long time (> 10 days) has been obtained.
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Affiliation(s)
- Z Dzierzewicz
- Department of Molecular Biology, Biochemistry and Biopharmacy, Medical University of Silesia, 1 Narcyzów Str., 41-200 Sosnowiec
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