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Petr V, Hrubá P, Šafránek R, Dedochova J, Krejčí K, Stepankova S, Machová J, Slatinska J, Kollár M, Honsova E, Dusilova Sulkova S, Viklicky O. P1702THROMBOTIC MICROANGIOPATHY IN KIDNEY TRANSPLANT RECIPIENTS. Nephrol Dial Transplant 2020. [DOI: 10.1093/ndt/gfaa142.p1702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background and Aims
Thrombotic microangiopathy (TMA) pathogenesis in kidney transplantation is poorly understood. The aim of this study was to evaluate donor and recipients risk factors for posttransplant TMA.
Method
In this retrospective multicenter national study, we identified both the case and 3M protocol kidney graft biopsies in 5258 recipients with TMA (n=57, 1.1 %) in 1994-2019. To further evaluate the effect of donor kidney on TMA development, the outcomes of the pair kidney grafts from the identical donors (n=43, 6 living donor, 1 pair kidney discarded, 6 insufficient data) as control group was analyzed.
Results
TMA occurred in 57 patients at 8th (median) post-operative day. Interestingly, neither histological nor laboratory signs of TMA were present in controls but in one case where TMA was evident in both recipients and in donor zero-hour biopsy. TMA associated with acute antibody mediated rejection was found in 11 cases (19%). Basic demographics between TMA and control group were similar, however longer cold ischemia time (p < 0,05, Figure 1) and more frequent delayed graft function (p < 0,05) were observed in TMA group. Patients with TMA experienced lower death-censored 5-year graft survival (56 vs. 84 %) in comparison with control group (p < 0,05, HR 2,904 (95% CI 1,411; 6,127), Figure 2).
Conclusion
TMA significantly affects the long-term kidney graft survival. Longer cold ischemia time was identified as the only risk factor and thus recipients genetic background is highly suspected in its pathogenesis.
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Affiliation(s)
- Vojtěch Petr
- Institute of Clinical and Experimental Medicine, Transplantcentre, Department of Nephrology, Prague, Czech Republic
| | - Petra Hrubá
- Institute of Clinical and Experimental Medicine, Transplant Laboratory, Prague, Czech Republic
| | - Roman Šafránek
- Fakultní nemocnice Hradec Králové, Hemodialysis Department, Hradec Kralove, Czech Republic
| | - Jarmila Dedochova
- University Hospital in Ostrava, Department of Medicine, Ostrava-Poruba, Czech Republic
| | - Karel Krejčí
- University Hospital Olomouc, 3rd Department of Medicine, Olomouc, Czech Republic
| | - Sona Stepankova
- Center of Cardiovascular and Transplant Surgery, Brno, Czech Republic
| | - Jana Machová
- University Hospital in Pilsen, Department of Medicine, Plzen, Czech Republic
| | - Janka Slatinska
- Institute of Clinical and Experimental Medicine, Transplantcentre, Department of Nephrology, Prague, Czech Republic
| | - Marek Kollár
- Institute of Clinical and Experimental Medicine, Clinical and Transplant Pathology Centre, Prague, Czech Republic
| | - Eva Honsova
- Institute of Clinical and Experimental Medicine, Clinical and Transplant Pathology Centre, Prague, Czech Republic
| | | | - Ondrej Viklicky
- Institute of Clinical and Experimental Medicine, Transplantcentre, Department of Nephrology, Prague, Czech Republic
- Institute of Clinical and Experimental Medicine, Transplant Laboratory, Prague, Czech Republic
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Tycová I, Hrubá P, Maixnerová D, Girmanová E, Mrázová P, Straňavová L, Zachoval R, Merta M, Slatinská J, Kollár M, Honsová E, Tesař V, Viklický O. Molecular profiling in IgA nephropathy and focal and segmental glomerulosclerosis. Physiol Res 2017; 67:93-105. [PMID: 29137483 DOI: 10.33549/physiolres.933670] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
The aim of the study was to characterize by molecular profiling two glomerular diseases: IgA nephropathy (IgAN) and focal segmental glomerulosclerosis (FSGS) and to identify potential molecular markers of IgAN and FSGS progression. The expressions of 90 immune-related genes were compared in biopsies of patients with IgAN (n=33), FSGS (n=17) and in controls (n=11) using RT-qPCR. To identify markers of disease progression, gene expression was compared between progressors and non-progressors in 1 year follow-up. The results were verified on validation cohort of patients with IgAN (n=8) and in controls (n=6) using laser-capture microdissection, that enables to analyze gene expression separately for glomeruli and interstitium. In comparison to controls, patients with both IgAN and FSGS, had lower expression of BAX (apoptotic molecule BCL2-associated protein) and HMOX-1 (heme oxygenase 1) and higher expression of SELP (selectin P). Furthermore, in IgAN higher expression of PTPRC (protein-tyrosine phosphatase, receptor-type C) and in FSGS higher expression of BCL2L1 (regulator of apoptosis BCL2-like 1) and IL18 compared to control was observed. Validation of differentially expressed genes between IgAN and controls on another cohort using laser-capture microdissection confirmed higher expression of PTPRC in glomeruli of patients with IgAN. The risk of progression in IgAN was associated with higher expression EDN1 (endothelin 1) (AUC=0.77) and FASLG (Fas ligand) (AUC=0.82) and lower expression of VEGF (vascular endothelial growth factor) (AUC=0.8) and in FSGS with lower expression of CCL19 (chemokine (C-C motif) ligand 19) (AUC=0.86). Higher expression of EDN1 and FASLG along with lower expression of VEGF in IgAN and lower expression of CCL19 in FSGS at the time of biopsy can help to identify patients at risk of future disease progression.
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Affiliation(s)
- I Tycová
- Transplant Laboratory, Institute for Clinical and Experimental Medicine, Prague, Czech Republic.
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Týcová I, Sulková SD, Štěpánková J, Krejčík Z, Merkerová MD, Stránecký V, Hrubá P, Girmanová E, Černoch M, Lipár K, Marada T, Povýšil C, Viklický O. Molecular patterns of diffuse and nodular parathyroid hyperplasia in long-term hemodialysis. Am J Physiol Endocrinol Metab 2016; 311:E720-E729. [PMID: 27600827 DOI: 10.1152/ajpendo.00517.2015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Accepted: 08/21/2016] [Indexed: 01/08/2023]
Abstract
Secondary hyperparathyroidism is a well-known complication of end-stage renal disease (ESRD). Both nodular and diffuse parathyroid hyperplasia occur in ESRD patients. However, their distinct molecular mechanisms remain poorly understood. Parathyroid tissue obtained from ESRD patients who had undergone parathyroidectomy was used for Illumina transcriptome screening and subsequently for discriminatory gene analysis, pathway mapping, and gene annotation enrichment analysis. Results were further validated using quantitative RT-PCR on the independent larger cohort. Microarray screening proved homogeneity of gene transcripts in hemodialysis patients compared with the transplant cohort and primary hyperparathyroidism; therefore, further experiments were performed in hemodialysis patients only. Enrichment analysis conducted on 485 differentially expressed genes between nodular and diffuse parathyroid hyperplasia revealed highly significant differences in Gene Ontology terms and the Kyoto Encyclopedia of Genes and Genomes database in ribosome structure (P = 3.70 × 10-18). Next, quantitative RT-PCR validation of the top differently expressed genes from microarray analysis proved higher expression of RAN guanine nucleotide release factor (RANGRF; P < 0.001), calcyclin-binding protein (CACYBP; P < 0.05), and exocyst complex component 8 (EXOC8; P < 0.05) and lower expression of peptidylprolyl cis/trans-isomerase and NIMA-interacting 1 (PIN1; P < 0.01) mRNA in nodular hyperplasia. Multivariate analysis revealed higher RANGRF and lower PIN1 expression along with parathyroid weight to be associated with nodular hyperplasia. In conclusion, our study suggests the RANGRF transcript, which controls RNA metabolism, to be likely involved in pathways associated with the switch to nodular parathyroid growth. This transcript, along with PIN1 transcript, which influences parathyroid hormone secretion, may represent new therapeutical targets to cure secondary hyperparathyroidism.
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Affiliation(s)
- Irena Týcová
- Transplant Laboratory, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Sylvie Dusilová Sulková
- Department of Nephrology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic; Hemodialysis Centre, University Hospital, Hradec Králové, Czech Republic
| | - Jitka Štěpánková
- Department of Nephrology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Zdeněk Krejčík
- Institute of Hematology and Blood Transfusion, Prague, Czech Republic
| | | | - Viktor Stránecký
- Institute of Inherited Metabolic Disorders, Charles University and 1st School of Medicine and General University Hospital, Prague, Czech Republic
| | - Petra Hrubá
- Transplant Laboratory, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Eva Girmanová
- Transplant Laboratory, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Marek Černoch
- Transplant Laboratory, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Květoslav Lipár
- Transplant Surgery Department, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Tomáš Marada
- Transplant Surgery Department, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Ctibor Povýšil
- Department of Pathology, Charles University and 1st School of Medicine and General University Hospital, Prague, Czech Republic; and
| | - Ondřej Viklický
- Transplant Laboratory, Institute for Clinical and Experimental Medicine, Prague, Czech Republic; Department of Nephrology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic;
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Hubáček JA, Dlouhá D, Adámková V, Zlatohlavek L, Viklický O, Hrubá P, Češka R, Vrablík M. SLCO1B1 polymorphism is not associated with risk of statin-induced myalgia/myopathy in a Czech population. Med Sci Monit 2015; 21:1454-9. [PMID: 25992810 PMCID: PMC4450600 DOI: 10.12659/msm.893007] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Background Gene SLCO1B1, encoding solute organic anionic transport polypeptide OATP1B1, belongs to the group of candidates potentially influencing statin treatment safety. OATP1B1 regulates (not only) the hepatic uptake of statins. Its genetic variation was described as an important predictor of statin-associated myopathy in a cohort of patients treated with a maximum dose of simvastatin. However, the impact of SLCO1B1 gene polymorphism on this risk in patients treated with other statins or lower doses of simvastatin needs to be assessed. Therefore, we performed the present study. Material/Methods SLCO1B1 tagging rs4363657 polymorphism was analyzed in 2 groups of patients with dyslipidemia (treated with simvastatin or atorvastatin, 10 or 20 mg per day), subgroup with statin-induced myalgia (N=286), and subgroup (N=707) without myalgia/myopathy, and in 2301 population controls without lipid-lowering treatment. Results Frequency of the individual genotypes in patients with myalgia/myopathy (TT=62.3%, CT=34.5%, CC=2.8%) did not significantly differ (both P values over 0.19) from that in patients without muscle symptoms (TT=61.4%, CT=32.9%, CC=5.7%) or from the population controls (TT=63.9%, CT=32.5%, CC=3.6%). Null results were also obtained for the dominant and recessive models of the analysis. Conclusions In Czech patients treated with low statin doses, there is no association between SLCO1B1 gene polymorphism and risk of myalgia/myopathy.
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Affiliation(s)
- Jaroslav A Hubáček
- Department of Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Dana Dlouhá
- Department of Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Vera Adámková
- Department of Preventive Cardiology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Lukáš Zlatohlavek
- 3rd Department of Internal Medicine, 1st Faculty of Medicine, Charles University Prague, Prague, Czech Republic
| | - Ondřej Viklický
- Department of Nephrology, Transplant Center, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Petra Hrubá
- Department of Nephrology, Transplant Center, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Richard Češka
- 3rd Department of Internal Medicine, 1st Faculty of Medicine, Charles University Prague, Prague, Czech Republic
| | - Michal Vrablík
- 3rd Department of Internal Medicine, 1st Faculty of Medicine, Charles University Prague, Prague, Czech Republic
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Hrubá P, Honys D, Twell D, Capková V, Tupý J. Expression of beta-galactosidase and beta-xylosidase genes during microspore and pollen development. Planta 2005; 220:931-40. [PMID: 15517348 DOI: 10.1007/s00425-004-1409-0] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2004] [Accepted: 09/08/2004] [Indexed: 05/24/2023]
Abstract
Tobacco (Nicotiana tabacum L.) microspores at the time of mitosis are characterized by the abundant occurrence of 92- and 98-kDa glycoproteins (GP92 and GP98). GP92 is a soluble protein while GP98 is bound to the insoluble microspore fraction. Both glycoproteins were isolated by affinity chromatography and SDS-PAGE and analysed by MS. Peptide sequences were determined by mu-HPLC/nano-ESI-MS/MS (electrospray ionization tandem MS). GP92 displayed homology to beta-galactosidase (EC 3.2.1.23) and GP98 to beta-xylosidase (EC 3.2.1.37) from Arabidopsis thaliana (L.) Heynh. The activities of the two enzymes in microspore and pollen extracts of tobacco exhibited similar developmental changes to the occurrence of GP92 and GP98, with a maximum around microspore mitosis. These two glycoproteins are the first identified enzymes characteristic of mitotic microspores. Arabidopsis transcriptomic data for five beta-galactosidase and three beta-xylosidase genes abundantly expressed in pollen were verified by reverse transcription-PCR of RNA from different stages of Arabidopsis pollen development and from various parts of the sporophyte. The results showed abundant expression of two genes (At5g20710, At1g31740) homologous to tobacco GP92 in microspores and early pollen, and of three genes (At5g56870, At2g16730 and At4g35010) in maturing pollen. Analysis of beta-xylosidases showed abundant expression of a late pollen-specific gene At3g62710 and low expression of an early gene At5g10560. It is suggested that the early beta-galactosidase and beta-xylosidase genes may participate in cell wall loosening associated with pollen expansion after microspore mitosis and that the products of the late genes may play a role in cell expansion during pollen germination.
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Affiliation(s)
- Petra Hrubá
- Institute of Experimental Botany, Academy of Sciences of the Czech Republic, Na Perníkárce 15, 160 00, Prague 6, Czech Republic.
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Pazdiora P, Benesová J, Brejcha O, Holecek J, Hrubá P, Kubátová A, Morávková I, Ouradová R, Spácilová M, Turková D, Vodrázková Z, Struncová V. [Incidence of tick-borne encephalitis in the West Bohemia Region 1960-1999--evaluation of vaccination]. Epidemiol Mikrobiol Imunol 2000; 49:148-52. [PMID: 11188761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
In 1960-1999 in the West Bohemian region 1216 cases of tick-borne encephalitis were recorded, four were fatal. Since 1992 there was a marked increase in the number of these infections--in 1992-1999 the relative morbidity was 6.7 per 100,000 population per year, the highest specific morbidity shifted to the age group of 55-64 years. In the whole region changes occurred as to the probable transmission of infection. By the end of 1999 in western Bohemia the hygiene service immunized, by at least three doses against tick-borne encephalitis 23,225 subjects, i.e. 2.7% of the population. The negligible vaccination rate did not have so far an impact on the epidemiological characteristics of the infection. In view of the more frequent and clinically more severe affection in elderly subjects it is important to raise the vaccination rate in particular in more advanced age groups.
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