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Hurtado A, Mota-Gómez I, Lao M, Real FM, Jedamzick J, Burgos M, Lupiáñez DG, Jiménez R, Barrionuevo FJ. Complete male-to-female sex reversal in XY mice lacking the miR-17~92 cluster. Nat Commun 2024; 15:3809. [PMID: 38714644 PMCID: PMC11076593 DOI: 10.1038/s41467-024-47658-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 04/04/2024] [Indexed: 05/10/2024] Open
Abstract
Mammalian sex determination is controlled by antagonistic gene cascades operating in embryonic undifferentiated gonads. The expression of the Y-linked gene SRY is sufficient to trigger the testicular pathway, whereas its absence in XX embryos leads to ovarian differentiation. Yet, the potential involvement of non-coding regulation in this process remains unclear. Here we show that the deletion of a single microRNA cluster, miR-17~92, induces complete primary male-to-female sex reversal in XY mice. Sry expression is delayed in XY knockout gonads, which develop as ovaries. Sertoli cell differentiation is reduced, delayed and unable to sustain testicular development. Pre-supporting cells in mutant gonads undergo a transient state of sex ambiguity which is subsequently resolved towards the ovarian fate. The miR-17~92 predicted target genes are upregulated, affecting the fine regulation of gene networks controlling gonad development. Thus, microRNAs emerge as key components for mammalian sex determination, controlling Sry expression timing and Sertoli cell differentiation.
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Grants
- P20-00583 Consejería de Economía, Innovación, Ciencia y Empleo, Junta de Andalucía (Ministry of Economy, Innovation, Science and Employment, Government of Andalucia)
- P20-00583 Consejería de Economía, Innovación, Ciencia y Empleo, Junta de Andalucía (Ministry of Economy, Innovation, Science and Employment, Government of Andalucia)
- P11-CVI-7291 Consejería de Economía, Innovación, Ciencia y Empleo, Junta de Andalucía (Ministry of Economy, Innovation, Science and Employment, Government of Andalucia)
- P20-00583 Consejería de Economía, Innovación, Ciencia y Empleo, Junta de Andalucía (Ministry of Economy, Innovation, Science and Employment, Government of Andalucia)
- IRTG2403 Deutsche Forschungsgemeinschaft (German Research Foundation)
- IRTG2403 Deutsche Forschungsgemeinschaft (German Research Foundation)
- IRTG2403 Deutsche Forschungsgemeinschaft (German Research Foundation)
- IRTG2403 Deutsche Forschungsgemeinschaft (German Research Foundation)
- grant no. 101045439, 3D-REVOLUTION EC | EU Framework Programme for Research and Innovation H2020 | H2020 Priority Excellent Science | H2020 European Research Council (H2020 Excellent Science - European Research Council)
- Ministerio de Ciencia e Innovación. Agencia Estatal de Investigación. Grant No. PID2022-139302NB-I00
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Affiliation(s)
- Alicia Hurtado
- Department of Genetics and Institute of Biotechnology, Labs. 127 and A105, Centre for Biomedical Research, University of Granada, Armilla, Granada, Spain
- Epigenetics and Sex Development Group, Berlin Institute for Medical Systems Biology, Max-Delbrück Center for Molecular Medicine, Berlin, Germany
- Centro Andaluz de Biología del Desarrollo (CABD), CSIC/UPO/JA, Seville, Spain
| | - Irene Mota-Gómez
- Epigenetics and Sex Development Group, Berlin Institute for Medical Systems Biology, Max-Delbrück Center for Molecular Medicine, Berlin, Germany
| | - Miguel Lao
- Department of Genetics and Institute of Biotechnology, Labs. 127 and A105, Centre for Biomedical Research, University of Granada, Armilla, Granada, Spain
| | - Francisca M Real
- Research Group Development & Disease, Max Planck Institute for Molecular Genetics, Berlin, Germany
| | - Johanna Jedamzick
- Epigenetics and Sex Development Group, Berlin Institute for Medical Systems Biology, Max-Delbrück Center for Molecular Medicine, Berlin, Germany
| | - Miguel Burgos
- Department of Genetics and Institute of Biotechnology, Labs. 127 and A105, Centre for Biomedical Research, University of Granada, Armilla, Granada, Spain
| | - Darío G Lupiáñez
- Epigenetics and Sex Development Group, Berlin Institute for Medical Systems Biology, Max-Delbrück Center for Molecular Medicine, Berlin, Germany.
- Centro Andaluz de Biología del Desarrollo (CABD), CSIC/UPO/JA, Seville, Spain.
| | - Rafael Jiménez
- Department of Genetics and Institute of Biotechnology, Labs. 127 and A105, Centre for Biomedical Research, University of Granada, Armilla, Granada, Spain.
| | - Francisco J Barrionuevo
- Department of Genetics and Institute of Biotechnology, Labs. 127 and A105, Centre for Biomedical Research, University of Granada, Armilla, Granada, Spain.
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Lao M, Hurtado A, de Castro AC, Burgos M, Jiménez R, Barrionuevo FJ. Sox9 is required for nail bed differentiation and digit tip regeneration. J Invest Dermatol 2022; 142:2613-2622.e6. [DOI: 10.1016/j.jid.2022.03.020] [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] [Received: 12/15/2021] [Revised: 03/15/2022] [Accepted: 03/30/2022] [Indexed: 11/28/2022]
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3
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Hurtado A, Palomino R, Georg I, Lao M, Real FM, Carmona FD, Burgos M, Jiménez R, Barrionuevo FJ. Deficiency of the onco-miRNA cluster, miR-106b∼25, causes oligozoospermia and the cooperative action of miR-106b∼25 and miR-17∼92 is required to maintain male fertility. Mol Hum Reprod 2020; 26:389-401. [PMID: 32330263 DOI: 10.1093/molehr/gaaa027] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 03/27/2020] [Accepted: 04/15/2020] [Indexed: 12/28/2022] Open
Abstract
The identification of new genes involved in sexual development and gonadal function as potential candidates causing male infertility is important for both diagnostic and therapeutic purposes. Deficiency of the onco-miRNA cluster miR-17∼92 has been shown to disrupt spermatogenesis, whereas mutations in its paralog cluster, miR-106b∼25, that is expressed in the same cells, were reported to have no effect on testis development and function. The aim of this work is to determine the role of these two miRNA clusters in spermatogenesis and male fertility. For this, we analyzed miR-106b∼25 and miR-17∼92 single and double mouse mutants and compared them to control mice. We found that miR-106b∼25 knock out testes show reduced size, oligozoospermia and altered spermatogenesis. Transcriptomic analysis showed that multiple molecular pathways are deregulated in these mutant testes. Nevertheless, mutant males conserved normal fertility even when early spermatogenesis and other functions were disrupted. In contrast, miR-17∼92+/-; miR-106b∼25-/- double mutants showed severely disrupted testicular histology and significantly reduced fertility. Our results indicate that miR-106b∼25 and miR-17∼92 ensure accurate gene expression levels in the adult testis, keeping them within the required thresholds. They play a crucial role in testis homeostasis and are required to maintain male fertility. Hence, we have identified new candidate genetic factors to be screened in the molecular diagnosis of human males with reproductive disorders. Finally, considering the well-known oncogenic nature of these two clusters and the fact that patients with reduced fertility are more prone to testicular cancer, our results might also help to elucidate the molecular mechanisms linking both pathologies.
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Affiliation(s)
- Alicia Hurtado
- Departamento de Genética e Instituto de Biotecnología, Universidad de Granada, Labs 127 and 105a, Centro de Investigación Biomédica, Avenida del Conocimiento, 18016 Armilla, Granada, Spain
| | - Rogelio Palomino
- Departamento de Bioquímica y Biología Molecular I e Instituto de Investigación Biosanitaria de Granada, Universidad de Granada, Laboratorio 127 Centro de Investigación Biomédica, Avenida del Conocimiento, 18016 Armilla, Granada, Spain
| | - Ina Georg
- Genetics of Complex Diseases Unit, Pfizer-University of Granada-Junta de Andalucía "Centre for Genomics and Oncological Research" (GENYO), Avenida de la Ilustración 114, 18016 Granada, Spain
| | - Miguel Lao
- Departamento de Genética e Instituto de Biotecnología, Universidad de Granada, Labs 127 and 105a, Centro de Investigación Biomédica, Avenida del Conocimiento, 18016 Armilla, Granada, Spain
| | | | - F David Carmona
- Departamento de Genética e Instituto de Biotecnología, Universidad de Granada, Labs 127 and 105a, Centro de Investigación Biomédica, Avenida del Conocimiento, 18016 Armilla, Granada, Spain
| | - Miguel Burgos
- Departamento de Genética e Instituto de Biotecnología, Universidad de Granada, Labs 127 and 105a, Centro de Investigación Biomédica, Avenida del Conocimiento, 18016 Armilla, Granada, Spain
| | - Rafael Jiménez
- Departamento de Genética e Instituto de Biotecnología, Universidad de Granada, Labs 127 and 105a, Centro de Investigación Biomédica, Avenida del Conocimiento, 18016 Armilla, Granada, Spain
| | - Francisco J Barrionuevo
- Departamento de Genética e Instituto de Biotecnología, Universidad de Granada, Labs 127 and 105a, Centro de Investigación Biomédica, Avenida del Conocimiento, 18016 Armilla, Granada, Spain
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Chen D, Yuan S, Lao M, Zhan Y, Xu H, Liang L, Cai X, Wang X, Zhan Z. Umbilical arterial Doppler ultrasonography predicts late pregnancy outcomes in patients with lupus nephritis: a multicenter study from southern China. Lupus 2019; 28:1312-1319. [PMID: 31495267 DOI: 10.1177/0961203319873702] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
OBJECTIVES To investigate the fetal adverse pregnancy outcomes (APOs) and the predictive value of umbilical arterial Doppler ultrasonography in the third trimester in pregnant women with lupus nephritis (LN). METHODS A retrospective cohort study enrolling 203 LN patients from 2007 to 2017 was performed. Ultrasonic parameters were recorded. RESULTS Fetal APOs occurred in 103 patients (103/203, 50.7%). Sixty-six pregnancies (66/203, 32.5%) ended with preterm births. The incidence rate of intrauterine growth restriction (IUGR) was 18.2% (37/203). Fetal distress was noted in 23 pregnancies (23/203, 11.3%). All the Doppler parameters elevated in patients with IUGR, fetal distress, and composite conditions. Resistance index (RI) indicated the highest risk of IUGR and composite APOs. The cutoff values were 0.66 and 0.67, respectively. Sensitivities were 51.4% and 33.7%, and specificities were 87.4% and 92.1%. Peak velocity of the umbilical arteries at end-systole (Vmax, abbreviated as S) to that at end-diastole (Vmin, abbreviated as D) (S/D) ratio was also a best predictor for IUGR, with the optimal cutoff value of 2.88. Sensitivity and specificity were comparable with RI. Pulsatility index (PI) over 0.84 was an ideal indicator for fetal distress with an optimal combination of sensitivity (89.5%) and specificity (51.6%). CONCLUSIONS Fetal complications were frequent in patients with LN. Umbilical arterial Doppler ultrasonography was a useful measure to predict late IUGR, fetal distress, and the composite APOs.
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Affiliation(s)
- D Chen
- Department of Rheumatology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - S Yuan
- Department of Rheumatology, South China University of Technology, Guangzhou, China
| | - M Lao
- Department of Rheumatology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Department of Geriatrics, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Y Zhan
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - H Xu
- Department of Rheumatology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - L Liang
- Department of Rheumatology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - X Cai
- Department of Rheumatology, South China University of Technology, Guangzhou, China
| | - X Wang
- Department of Ultrasound, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Z Zhan
- Department of Rheumatology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
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Lao M, Hänisch J, Kauffmann-Weiss S, Gehring R, Fillinger H, Drechsler A, Holzapfel B. High current variable temperature electrical characterization system for superconducting wires and tapes with continuous sample rotation in a split coil magnet. Rev Sci Instrum 2019; 90:015106. [PMID: 30709201 DOI: 10.1063/1.5078447] [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] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Accepted: 12/14/2018] [Indexed: 06/09/2023]
Abstract
A new state-of-the-art electrical transport measurement system was developed for the characterization of industrially produced coated conductors (CCs). The current leads are rated to a conduct current of up to 1000 A, which opens up the possibility of measuring the critical current Ic of tapes at a wide range of temperatures. The setup operates in a He-gas flow cryostat that provides stable temperatures between 1.8 and 200 K. The setup is equipped with a split-coil magnet that can apply fields of up to 6 T. A continuous rotation of the sample with respect to the magnetic field with an angular resolution of 0.5° enables characterization of anisotropic Ic of different tapes. In the measured voltage-current curves, weak sample heating mostly occurs from the dissipation in the tape during the Ic transition. It is demonstrated that the system can provide reliable data on the properties of CCs at temperatures lower than 77 K for a magnet design and other applications. The results allow the study of vortex pinning for further prospects of engineering the microstructure of the superconducting layer as well as to assess the performance of various tapes with different architectures to achieve optimum performance at different operating temperatures and magnetic fields.
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Affiliation(s)
- M Lao
- Institute of Technical Physics, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - J Hänisch
- Institute of Technical Physics, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - S Kauffmann-Weiss
- Institute of Technical Physics, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - R Gehring
- Institute of Technical Physics, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - H Fillinger
- Institute of Technical Physics, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - A Drechsler
- Institute of Technical Physics, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - B Holzapfel
- Institute of Technical Physics, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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Lao M, Wang X, Ding M, Yang Z, Chen H, Liang L, Zhan Z, Chen D. Invasive fungal disease in patients with systemic lupus erythematosus from Southern China: a retrospective study. Lupus 2018; 28:77-85. [PMID: 30526329 DOI: 10.1177/0961203318817118] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Objective To investigate the characteristics and associated factors of invasive fungal disease in patients with systemic lupus erythematosus from Southern China. Methods A retrospective study was performed. Demographic and clinical characteristics, laboratory data, and radiographic manifestations were recorded. Results A total of 45 lupus patients with invasive fungal disease (incidence 1.1%) were included. Twenty-three cases (51.1%) were infected with mold and 22 cases (48.9%) with yeast. Aspergillus spp. (44.4%) and Cryptococcus spp. (33.3%) were common. Aspergillosis mainly occurred in the lung. Cryptococcosis developed in the lung (40.0%), meninges (46.7%) and bloodstream (13.3%). Compared with yeast infection, mold infection tended to develop in patients with active lupus nephritis (65.2% vs. 31.8%, P = 0.03) and the mortality rate was higher (20.0% vs. 0%, P = 0.001). Co-infection with bacteria, virus or superficial fungi occurred in 12 patients (26.7%). Multivariate logistic regression analysis indicated that lymphopenia (odds ratio 2.65, 95% confidential interval 1.14–6.20, P = 0.02) and an accumulated dose of glucocorticoid (odds ratio 1.58, 95% confidence interval 1.10–2.25, P = 0.01) was associated with invasive fungal disease in lupus patients. Conclusion Mold infection tended to develop in patients with active lupus disease with high mortality. Co-infection is not rare. Lymphopenia and an accumulated dose of glucocorticoid are associated with invasive fungal disease in lupus patients.
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Affiliation(s)
- M. Lao
- Department of Rheumatology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
- Department of Geriatrics, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - X. Wang
- Department of Ultrasound, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - M. Ding
- Department of Geriatrics, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Z. Yang
- Department of Pathology, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, China
| | - H. Chen
- Department of Respirology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - L. Liang
- Department of Rheumatology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Z. Zhan
- Department of Rheumatology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - D. Chen
- Department of Rheumatology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
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Chen W, Ma T, Bai X, Zhang X, Li G, Lao M, Liang T. Acute Graft-vs-Host Disease After Liver Transplantation in a Patient Presenting With Neurogenic Symptoms as the Single Primary Manifestation: A Case Report. Transplant Proc 2018; 50:4028-4032. [DOI: 10.1016/j.transproceed.2018.05.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Accepted: 05/23/2018] [Indexed: 12/24/2022]
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Szaflik J, Major J, Izdebska J, Lao M, Szaflik J. Systemic immunosuppression with mycophenolate mofetil to prevent corneal graft rejection after high risk penetrating keratoplasty: a 2-year follow-up study. Acta Ophthalmol 2015. [DOI: 10.1111/j.1755-3768.2015.1493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- J.P. Szaflik
- Department of Ophthalmology; Medical University of Warsaw; Warszawa Poland
| | - J. Major
- Department of Ophthalmology; Medical University of Warsaw; Warszawa Poland
| | - J. Izdebska
- Department of Ophthalmology; Medical University of Warsaw; Warszawa Poland
| | - M. Lao
- Department of Ophthalmology; Medical University of Warsaw; Warszawa Poland
| | - J. Szaflik
- Department of Ophthalmology; Medical University of Warsaw; Warszawa Poland
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Szaflik J, Major J, Izdebska J, Lao M, Szaflik J. Systemic immunosuppression with mycophenolate mofetil to prevent corneal graft rejection after high risk penetrating keratoplasty: a 2-year follow-up study. Acta Ophthalmol 2015. [DOI: 10.1111/j.1755-3768.2015.0493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- J.P. Szaflik
- Department of Ophthalmology; Medical University of Warsaw; Warszawa Poland
| | - J. Major
- Department of Ophthalmology; Medical University of Warsaw; Warszawa Poland
| | - J. Izdebska
- Department of Ophthalmology; Medical University of Warsaw; Warszawa Poland
| | - M. Lao
- Department of Ophthalmology; Medical University of Warsaw; Warszawa Poland
| | - J. Szaflik
- Department of Ophthalmology; Medical University of Warsaw; Warszawa Poland
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Chan N, Lao M, Yam K, Poon C, Yiu B, Wong L, Poon Y. Any differences on the rehabilitation outcomes for children with cerebral palsy undergone selective dorsal rhizotomy: single level vs multi-level laminectomy? Physiotherapy 2015. [DOI: 10.1016/j.physio.2015.03.377] [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: 11/28/2022]
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Galceran J, Lao M, David C, Companys E, Rey-Castro C, Salvador J, Puy J. The impact of electrodic adsorption on Zn, Cd and Pb speciation measurements with AGNES. J Electroanal Chem (Lausanne) 2014. [DOI: 10.1016/j.jelechem.2014.03.037] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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13
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Grochowiecki T, Gała̢zka Z, Frunze S, Nazarewski S, Jakimowicz T, Pa̢czek L, Durlik M, Lao M, Szmidt J. Influence of Simultaneous Pancreas and Preemptive Kidney Transplantation on Severity of Postoperative Complications. Transplant Proc 2011; 43:3102-4. [DOI: 10.1016/j.transproceed.2011.08.029] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Nowacka-Cieciura E, Kamiñska B, Cieciura T, Gradowska L, Pazik J, Lao M, Rowiñski W, Paczek L. Randomised open clinical trial of conversion from mycophenolate mofetil to azathioprine in cadaveric renal transplantation. Transpl Int 2011. [DOI: 10.1111/j.1432-2277.2000.tb02119.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Baczewska-Mazurkiewicz D, Rydzewska G, Milewski J, Durlik M, Lao M, Rydzewski A. Magnification chromoendoscopy in comparison to standard chromoendoscopy for detection of intestinal metaplasia in renal transplant recipients. Adv Med Sci 2006; 51:115-8. [PMID: 17357289] [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
PURPOSE Renal transplantation is associated with frequent gastrointestinal complications. Intestinal metaplasia is a feature of atrophic gastritis whereas the diagnosis of Barrett's esophagus is based on histological demonstration of specialized metaplasia. Both conditions are associated with increased risk of adenocarcinoma. The aim of the present study was to assess whether magnification endoscopy improves the diagnostic accuracy of intestinal metaplasia in stomach and in esophagus. MATERIAL AND METHODS In this non-randomized, feasibility study thirty one (12 women and 19 men) renal transplant recipients, with a mean age of 44.0 years were evaluated for the presence of intestinal metaplasia. Standard esophagogastroscopy with methylene blue staining was followed by magnification endoscopy. The presence of gastritis and intestinal metaplasia was classified according to modified updated Sydney classification. RESULTS Of 31 patients, 16 patients had endoscopic and histopathological evidence of gastric intestinal metaplasia, and standard endoscopy with methylene blue staining was sufficient for diagnosis (15 from 16). Magnification endoscopy allowed identification of 6 patients with specialized intestinal metaplasia in Barrett's esophagus, which would be otherwise missed. CONCLUSIONS In this study diagnostic accuracy of standard endoscopy for identification of intestinal metaplasia in the stomach was not improved by the use of magnification endoscopy, but the latter was an accurate method of predicting specialized intestinal metaplasia in Barrett's esophagus. The use of magnification endoscopy in the clinical setting of renal transplantation needs further studies.
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Affiliation(s)
- D Baczewska-Mazurkiewicz
- Department of Internal Medicine and Gastroenterology, Central Clinical Hospital of Ministry of Home Affairs and Administration, Warsaw, Poland
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Matłosz B, Mróz A, Durlik M, Wesołowska A, Sadowska A, Cieciura T, Perkowska A, Deborska-Materkowska D, Szmidt J, Michalak G, Paczek L, Lao M. Polyomavirus BK infection. Transplant Proc 2004; 35:2196-8. [PMID: 14529886 DOI: 10.1016/s0041-1345(03)00818-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Because it is an important factor affecting renal transplant function, BK infections are significant problem in posttransplant. BK nephropathy develops in 5% of renal allograft recipients, in most cases within the first year after the procedure. The gold standard for BK nephropathy diagnosis is still immunohistochemical staining for large T antigen in graft biopsy specimens. The aim of the present study was to evaluate the incidence of and factors influencing BK nephropathy in our renal allograft population. Among 89 renal or pancreas/kidney allograft recipients, BKV DNA was detected in 1 or more serum samples in 17 patients but BK nephropathy was diagnosed in only 1 case. Plasmacytic tubulitis was an exclusive feature in PCR-positive patients with 2 (20%) cases but no such findings in the PCR-negative group. In 40% of patients in the PCR-positive group at least 1 rejection episode was diagnosed versus 22% in the PCR-negative group. There were no significant differences in both groups according to total ischemia time, immunosuppressive treatments, or mean serum creatinine at 1 year after transplantation.
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Affiliation(s)
- B Matłosz
- Department of Transplantation Medicine and Nephrology, Transplantation Institute, Warsaw, Poland
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Baczkowska T, Perkowska-Francka A, Durlik M, Cieciura T, Nowacka-Cieciura E, Pazik J, Lewandowska D, Mroz A, Matlosz B, Chmura A, Galazka Z, Lao M. The role of the protocol biopsies in renal allograft recipients. Transplant Proc 2004; 35:2179-81. [PMID: 14529881 DOI: 10.1016/s0041-1345(03)00807-8] [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] [Indexed: 11/23/2022]
Abstract
Subclinical rejection and long-term cyclosporine nephrotoxicity are well-known risk factors of chronic allograft nephropathy. In a prospective study 32 low-risk patients were randomized to either a reduced CsA dose (5 mg/kg/d) and daclizumab (group A, n = 16) for 7 months posttransplant with subsequent CsA tapering/withdrawal, or to a normal CsA dose (10 mg/kg/day) without daclizumab (group B, n = 16). Both groups received MMF and prednisone. Protocol biopsies were obtained at engraftment and 3 and 12 months after Tx. The number of rejection episodes was the primary endpoint. The secondary endpoints were: renal function, histological parameters related to CsA, and serum levels of TGF-beta and PDGF-BB. A low incidence of clinically suspected rejection episodes was observed (19% in group A and 12.4% in group B; P = NS). Although protocol biopsies showed 12 subclinical rejection episodes (six in group A, six in group B), serum creatinine levels were not different between the examined groups at 3 months. However, at 12 months, there was a statistically improved mean creatinine level in group A patients (1.2 mg/dL +/- 0.5 in group A vs 1.54 mg/dL in group B; P <.05). Chronic histopathologic changes were significant for biopsies at 3 and 12 months in both groups compared to the baseline findings for protocol biopsies (with no differences between groups, or between 3 and 12 months in both groups). Serum TGF-beta and PDGF-BB did not differ between the groups. Protocol biopsies may be useful to monitor safety and efficiency of new immunosuppressive protocols. Immunosuppressive regimens with low CsA doses followed by the drug's complete withdrawal seem to be efficient and safe in low-risk kidney allograft recipients.
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Affiliation(s)
- T Baczkowska
- Department of Transplantation Medicine and Nephrology, Medical University of Warsaw, Warsaw, Poland
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18
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Paczek L, Lao M, Durlik M, Szmidt J, Rowinski W. Immunosuppression in kidney transplantation in Poland. Transplant Proc 2004; 36:173S-176S. [PMID: 15041331 DOI: 10.1016/j.transproceed.2004.01.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This paper presents experience with cyclosporine A in kidney allograft recipients at the Transplantation Institute, the Medical University of Warsaw. Comparative studies on pharmacokinetics and bioavailability of CsA and Neoral as well as monitoring of the drug immunosuppressive activity are presented. The implementation of CsA to immunosuppressive therapy in renal allograft recipients have greatly improved the grafts and patients survival. CsA has been used in a great percentage of patients after renal allograft in Poland (72%) and seems to be in some patients the gold standard of immunosuppression.
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Affiliation(s)
- L Paczek
- Transplantation Institute, Medical University of Warsaw, Warsaw, Poland
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Abstract
Infectious complications, including pneumonia, remain one of the leading causes of morbidity and mortality in kidney allograft recipients. The aim of the study was to evaluate the relationship between pneumonia occurrence and treatment duration and recipient age, cause of native kidney insufficiency, dialysis duration, time between transplantation and onset, HLA matching, PRA immunosuppressive protocol, acute rejection incidence and treatment, kidney function at the pneumonia onset, as well as presence of comorbid conditions. One hundred and twenty pneumonia cases occurred in kidney allograft recipients transplanted between 1991 and 2000 with 12 to 120 months follow-up. Twenty five percentage of pneumonia episodes were diagnosed during the first posttransplant month, 25% between 2 and 6 months, and 25% at 0.5 to 3 years. Treatment duration measured from pneumonia onset to the study endpoint of recovery, which was defined as antibiotic withdrawal, show 50% of patient we cured after 15 days and 75% after 24 days of treatment. The risk of prolonged pneumonia treatment was associated with: second versus first kidney transplantation with RR = 2.3 (P <.02) and medians of treated time 28 versus 15 days; as well as serum creatinine level above 2 mg/dL (RR = 1.4; P <.098). Exposure to enhanced-potency immunosuppressive protocols including induction therapy with mono- or polyclonal antibodies increased the RR = 1.65 (P <.02), and lengthened the time to 18 versus 14 days. Maintenance immunosuppression with agents other than cyclosporine also enhanced the risk. (RR = 2.18; P <.068).
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Affiliation(s)
- J Pazik
- Department of Transplantation Medicine and Nephrology, Transplantation Institute, Warsaw, Poland
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20
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Mróz A, Durlik M, Cieciura T, Pazik J, Baczkowska T, Chmura A, Nazarewski S, Lao M. C4d complement split product expression in chronic rejection of renal allograft. Transplant Proc 2003; 35:2190-2. [PMID: 14529884 DOI: 10.1016/s0041-1345(03)00799-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Chronic allograft rejection remains the major cause of late renal graft loss. Its pathogenesis is complex, depending on both immunological and nonimmunological factors. An important role in development of chronic rejection is ascribed to an ongoing immunological reaction mainly of the humoral type. C4d complement split product, as a stable fragment of complement degradation activated by antigen-antibody complexes, is considered to be an indicator of humoral activity in allografts. The aim of the present study was to establish a correlation between C4d expression and morphological findings specific for chronic rejection among biopsy specimens from patients with deteriorating graft function versus protocol biopsy specimens versus biopsy specimens of native kidneys with glomerular diseases. C4d deposits in peritubular capillaries and glomeruli were observed in 83% of patients with morphological changes of chronic rejection. No C4d expression was found in the protocol biopsy group. C4d deposits in glomeruli localizations were found in kidneys from patients with glomerulopathies; the pattern of distribution was similar to that for antibodies characteristic for glomerulonephritis. There was a positive correlation between C4d expression and morphological features of chronic rejection. In our opinion, only peritubular capillary localization is specific for a rejection process; glomerular localization is nonspecific and probably secondary to antigen-antibody complex deposition in course of some types of glomerulopathies.
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Affiliation(s)
- A Mróz
- Department of Transplantation Medicine and Nephrology, Transplantation Institute Warsaw, Warsaw, Poland
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21
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Deborska D, Durlik M, Sadowska A, Nowacka-Cieciura E, Pazik J, Lewandowski Z, Chmura A, Galazka Z, Paczek L, Lao M. Human herpesvirus-6 in renal transplant recipients: potential risk factors for the development of human herpesvirus-6 seroconversion. Transplant Proc 2003; 35:2199-201. [PMID: 14529887 DOI: 10.1016/s0041-1345(03)00792-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Herpesviruses, including human herpesvirus-6 (HHV-6), reactivate and have the potential to be pathogenic in immunocompromised patients. Little information is available regarding the correlation between immunosuppressive therapy and HHV-6 seroconversion after organ transplantation. Serum samples obtained from 120 kidney and kidney/pancreas transplant recipients were tested to explore the potential risk factors for developing HHV-6 infection including types of immunosuppression and induction/rejection therapy. Stored serum samples obtained prior to and at the 2nd, 4th, 12th and 48th weeks after transplantation were tested for anti-HHV-6 immunoglobulin (Ig)M antibodies using indirect immunofluorescence assay. Prior to transplantation and 48 weeks after transplantation the sera were additionally tested for anti-HHV-6 IgG using enzyme-linked immunoassay. Ninety-one percent of 120 recipients were HHV-6 IgG-positive before transplantation. One hundred seven of 120 patients were anti-HHV-6 IgM-negative before transplantation. Primary/secondary HHV-6 seroconversion occurred in sera of 46.6% of these 107 patients. HHV-6 seroconversion most frequently occurred 2 to 4 weeks after transplantation. There was no significant relationship between HHV-6 seroconversion and the treatment with methylprednisolone (MP). The incidence of HHV-6 seroconversion was significantly higher in subjects who were treated with the regimens including Daclizumab or Sirolimus as compared with those who were on other protocols. HHV-6 seropositivity in the Polish population of organ transplant recipients is very high. We demonstrated a trend toward association of HHV-6 seroconversion with type of immunosuppressive therapy.
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Affiliation(s)
- D Deborska
- Department of Transplantation Medicine and Nephrology, Medical University of Warsaw, Warsaw, Poland
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Perkowska A, Elhasade A, Durlik M, Placha G, Gałazka Z, Lao M, Gaciong Z. The effect of chronic allograft rejection on plasma regulators of fibrinolysis. Ann Transplant 2003; 7:44-51. [PMID: 12221903] [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
Chronic renal allograft rejection is often associated with the presence of fibrin thrombi in the microcirculation. Our purpose was to evaluate the influence of chronic rejection on fibrinolytic regulators in plasma of renal allograft recipients. We evaluated the concentration and activities of tPA, uPA and PAI-I in plasma from kidney allograft recipients. We studied 64 patients who underwent kidney transplantation from cadaveric allograft donors. At the time of the study 38 patients had stable graft function for at least 6 months proceeding the study, and 26 recipients had biopsy-proven chronic rejection of the kidney transplant. Control group included 30 healthy blood donors. In kidney transplant recipients we found significantly higher plasma tPA activity (median: 0.99 IU/ml; range: 0-3.8 IU/ml) in comparison to healthy controls (median: 0.15 IU/ml; range: 0-2.8 IU/ml) (p = 0.002) as well as significantly lower plasma PAI-I activity (median: 7.06 U/ml; range: 0-33.2 U/ml) in comparison to healthy controls (median: 21.8 U/ml; range: 0-36.7 U/ml), (p = 0.0001). Among transplant recipients, PAI-I plasma activity in recipients with chronic graft rejection (median: 10.16 U/ml; range: 0-33.2 U/ml) was significantly higher than in patients with stable graft function (median: 4.83 U/ml; range: 0-22.9 U/ml), (p = 0.01). In transplant recipients with stable graft function and poorly controlled hypertension we found significantly higher PAI-I plasma activity in comparison to recipients with normal blood pressure (p = 0.006). In kidney transplant recipients there was a positive correlation between the dose of prednisone and PAI-I activity in plasma (p = 0.01) and an association between BMI value and plasma PAI-I activity (p = 0.008), as well as an association between BMI value and plasma tPA-Ant concentration (p = 0.006). Among transplant recipients, patients treated with ACE inhibitors had significantly lower uPA plasma activity than the rest of the group (p = 0.003). In recipients with stable graft function we found a correlation between CsA concentration and tPA activity (p = 0.04), as well as an association between the dose of CsA and uPA-Ant concentration in plasma (p = 0.049). In patients with chronic graft rejection we found a negative correlation between the dose of prednisone and uPA-Ant plasma level (p = 0.004). Renal allograft recipients have higher tPA and lower PAI-I activities in plasma in comparison to healthy individuals. Chronic allograft rejection, is as well as poorly controlled hypertension, seem to be associated with an increase PAI-I plasma activity. In kidney graft recipients there is a relation between the value of BMI and the activity and concentration of tPA-Ant as well as the value of BMI and the PAI-I activity in plasma. Poorly controlled hypertension is associated with an increase in PAI-I plasma activity. The results of our study suggest a stimulatory effect of CsA on tPA and PAI-I plasma activities as well as on uPA-Ant concentration, while prednisone in turn seems to enhance PAI-I activity in plasma and decrease uPA expression. In renal allograft recipients ACE inhibitors seem to reduce uPA plasma activity.
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Affiliation(s)
- A Perkowska
- Transplantation Institute, Warsaw Medical University, Warsaw, Poland.
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Nowaczyk M, Kasprzycka M, Górski A, Wierzbicki P, Wyzgal J, Durlik M, Gradowska L, Perkowska A, Lao M, Paczek L, Korczak-Kowalska G. Intracellular cytokine production in chronic renal allograft rejection. Transplant Proc 2002; 34:3132-3. [PMID: 12493398 DOI: 10.1016/s0041-1345(02)03617-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- M Nowaczyk
- Transplantation Institute, The Medical University of Warsaw, Warsaw, Poland
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24
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Rowiński W, Korczak-Kowalska G, Samsel R, Zderska M, Chmura A, Włodarczyk Z, Pliszczynski J, Wyzgał J, Cieciura T, Łagiewska B, Wałaszewski J, Paczek L, Lao M, Górski A. Can the immunosuppressive [correction of immunosupressive] effect of perioperative single high-dose antithymocyte globulin administration in kidney allograft recipients be due to apoptosis of activated lymphocytes? Transplant Proc 2002; 34:1622-4. [PMID: 12176510 DOI: 10.1016/s0041-1345(02)03047-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- W Rowiński
- General and Transplanataion Surgery, Transplantation Institute, the Medical University of Warsaw, U1 Nowogrodzka 59, 02-006 Warsaw, Poland
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25
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Nowacka-Cieciura E, Durlik M, Cieciura T, Kukuła K, Lewandowska D, Baçzkowska T, Deborska D, Lao M, Szmidt J, Rowiński W. Elevated serum immunoglobulins after steroid withdrawal in renal allograft recipients. Transplant Proc 2002; 34:564-6. [PMID: 12009625 DOI: 10.1016/s0041-1345(01)02847-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Ewa Nowacka-Cieciura
- Transplantation Institute, Medical University of Warsaw, 59 Nowogrodzka Street, 02-006 Warsaw, Poland
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26
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Szmidt J, Durlik M, Gałazka Z, Nazarewski S, Górnicka B, Ziarkiewicz-Wróblewska B, Bojakowski K, Nowacka-Cieciura E, Lao M. Low-stage renal carcinoma of the native kidneys in renal transplant recipients. Transplant Proc 2002; 34:583-4. [PMID: 12009631 DOI: 10.1016/s0041-1345(01)02852-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Jacek Szmidt
- Department of General, Vascular and Transplant Surgery, Medical University of Warsaw, Banacha 1a, 02-097 Warsaw, Poland
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27
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Nowacka-Cieciura E, Durlik M, Cieciura T, Lewandowska D, Baczkowska T, Kukuła K, Lao M, Szmidt J, Rowinski W. Steroid withdrawal after renal transplantation--risks and benefits. Transplant Proc 2002; 34:560-3. [PMID: 12009624 DOI: 10.1016/s0041-1345(01)02846-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ewa Nowacka-Cieciura
- Transplantation Institute, Medical University of Warsaw, 59 Nowogrodzka Street, 02-006 Warsaw, Poland
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28
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Michalak G, Czerwiński J, Kwiatkowski A, Danielewicz R, Kosieradzki M, Lisik W, Chmura A, Lao M, Durlik M, Wałaszewski J, Rowiński W. Surgical complications observed in simultaneous pancreas-kidney transplantation: thirteen years of experience of one center. Transplant Proc 2002; 34:661-2. [PMID: 12009657 DOI: 10.1016/s0041-1345(01)02880-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Grzegorz Michalak
- Department of General and Transplantation Surgery, Medical University of Warsaw, 59 Nowogrodzka Street, 02-006 Warsaw, Poland
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29
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Gałazka Z, Szmidt J, Nazarewski S, Grochowiecki T, Swiercz P, Bojakowska M, Bojakowski K, Lao M. Long-term results of kidney transplantation in recipients with atherosclerotic iliac arteries. Transplant Proc 2002; 34:604-5. [PMID: 12009639 DOI: 10.1016/s0041-1345(01)02860-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Z Gałazka
- Department of General, Vascular and Transplant Surgery, Medical University of Warsaw, Banacha 1A, 02-097 Warsaw, Poland
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30
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Baczkowska T, Kukula K, Nowacka-Cieciura E, Cieciura T, Lewandowska D, Ciecierski R, Grochowiecki T, Rowinski W, Szmidt J, Durlik M, Lao M. Use of daclizumab in the immunosuppression of high-risk kidney and kidney/pancreas recipients: Warsaw Transplantation Center experience. Transplant Proc 2002; 34:551-2. [PMID: 12009620 DOI: 10.1016/s0041-1345(01)02842-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- T Baczkowska
- Transplantation Institute, Medical University of Warsaw, 59 Nowogrodzka Street, 02-006 Warsaw, Poland
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31
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Baczkowska T, Serafinowicz A, Kukuła K, Nowacka-Cieciura E, Cieciura T, Deborska D, Gałazka Z, Rowiński W, Szmidt J, Durlik M, Lao M. Cyclosporine blood concentration at 2 hours (C(2)) from drug ingestion as the best single indicator of adequate cyclosporine immunosuppression in renal allograft recipients--a four-year follow-up. Transplant Proc 2002; 34:556-7. [PMID: 12009622 DOI: 10.1016/s0041-1345(01)02844-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Teresa Baczkowska
- Transplantation Institute, Medical University of Warsaw, 59 Nowogrodzka Street, 02-006 Warsaw, Poland
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32
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Perkowska A, Elhasade A, Gaciong Z, Durlik M, Placha G, Galazka Z, Lao M. Regulators of fibrynolysis in plasma of kidney transplant recipients. Transplant Proc 2002; 34:585-8. [PMID: 12009632 DOI: 10.1016/s0041-1345(01)02853-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Agnieszka Perkowska
- Transplantation Institute, Medical University, Nowogrodzka 59, 02-006 Warsaw, Poland
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33
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Deborska D, Durlik M, Sadowska A, Matłosz B, Baczkowska T, Paczek L, Szmidt J, Rowiński W, Lao M. Human herpesvirus-6 and human herpesvirus-8 seroprevalence in kidney transplant recipients. Transplant Proc 2002; 34:673-4. [PMID: 12009660 DOI: 10.1016/s0041-1345(01)02883-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Dominika Deborska
- Department of Transplantation Medicine and Nephrology, Transplantation Institute, Medical University of Warsaw, 59 Nowogrodzka Street, 02-006 Warsaw, Poland.
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34
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Wierzbicki P, Korczak-Kowalska G, Durlik M, Kłosowska D, Wyzgał J, Paczek L, Lao M, Górski A. The T-cell apoptosis in the early period after renal allograft transplantation. Transplant Proc 2002; 34:685-6. [PMID: 12009664 DOI: 10.1016/s0041-1345(01)02887-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Piotr Wierzbicki
- Transplantation Institute, Medical University of Warsaw, 59 Nowogrodzka Street, 02-006 Warsaw, Poland
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35
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Matl I, Bachleda P, Michalsky R, Navratil P, Lao M, Treska V, Prestele H, Matthisson M, Korn A. Basiliximab can be administered safely and effectively in a single dose on day 1 postrenal transplantation in patients receiving triple therapy with azathioprine. Transplant Proc 2001; 33:3205-6. [PMID: 11750375 DOI: 10.1016/s0041-1345(01)02364-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- I Matl
- Department of Nephrology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
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36
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Samsel R, Rowiński W, Chmura A, Włodarczyk Z, Wyzgał J, Cieciura T, Łagiewska B, Pliszczyński J, Korczak G, Paczek L, Wałaszewski J, Lao M. Perioperative administration of single, high-dose of ATG-Fresenius-S as an induction immunosuppressive therapy in cadaveric renal transplantation: preliminary results. Transplant Proc 2001; 33:2952-4. [PMID: 11543807 DOI: 10.1016/s0041-1345(01)02268-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- R Samsel
- Transplantation Institute, The Medical University of Warsaw and the County Hospital, Poznań, Poland
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37
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Qiu Z, Lao M, Wu C. Co-transfer of human wild-type p53 and granulocyte-macrophage colony-stimulating factor genes via recombinant adenovirus induces apoptosis and enhances immunogenicity in laryngeal cancer cells. Cancer Lett 2001; 167:25-32. [PMID: 11323095 DOI: 10.1016/s0304-3835(01)00453-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Co-transfer of immunomodulatory and anti-proliferative genes may be the basis for new strategies to enhance tumor regression. The purpose of this study was to develop a combination gene therapy strategy for the treatment of laryngeal cancer. Human wild-type p53 and granulocyte-macrophage colony-stimulating factor (GM-CSF) genes were transferred into human laryngeal cancer cells mediated by adenovirus type 5 vector co-expressing human wild-type p53 and GM-CSF (Ad-p53/GM-CSF). By the introduction of the wild-type p53 gene, the growth of human laryngeal cancer Hep-2 cells was inhibited and their apoptosis was induced. By the introduction of the GM-CSF gene, the immunogenicity of cancer cells was enhanced. Significant proliferation of tumor infiltrating lymphocytes and tumor-specific cytotoxicity of cytotoxic T lymphocytes were induced by Ad-p53/GM-CSF-infected cancer cells in vitro. The results suggest that the co-transfer of human wild-type p53 and GM-CSF genes into tumor cells via recombinant adenovirus may be further developed into an effective and practical combination gene therapy strategy for laryngeal cancer.
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Affiliation(s)
- Z Qiu
- Beijing Institute of Radiation Medicine, 27 Taiping Road, 100850, Beijing, PR China
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38
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Nowacka-Cieciura E, Kamiñska B, Cieciura T, Gradowska L, Pazik J, Lao M, Rowiñski W, Paczek L. Randomised open clinical trial of conversion from mycophenolate mofetil to azathioprine in cadaveric renal transplantation. Transpl Int 2001; 13 Suppl 1:S68-72. [PMID: 11111965 DOI: 10.1007/s001470050278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Mycophenolate mofetil (MMF) is a powerful immunosuppressive drug with established efficacy and safety. The search for a less expensive immunosuppressive protocol has led to an open randomised clinical trial of conversion from MMF to azathioprine (Aza). A total of 28 renal allograft recipients treated with prednisone, cyclosporine, and MMF was randomised into two groups: converted (early conversion) and control (late conversion). Conversion from MMF to Aza was conducted at the end of the 4th post-transplant month in the converted group and after the 12th month in the control. During the 20-month observation period, biopsy-proven acute rejection occurred more frequently in the converted than in the control group, although the difference was not statistically significant. Early conversion from MMF to Aza increased the risk of subsequent rejection in those patients who underwent at least one episode of acute rejection prior to conversion.
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Abstract
Very low subcutaneous doses of standard and low molecular weight heparin inhibited the traffic of sensitized lymphocytes to a graft site, reduced in situ mononuclear cell infiltration and prolonged skin allograft survival in mice. Similar effects were caused by low doses of oral heparin, while higher oral doses prolonged graft survival. Our results suggest that oral heparin may have immunosuppressive properties applicable in clinical transplantation.
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Affiliation(s)
- A Górski
- Department of Immunology, Transplantation Institute, Warsaw Medical School, Poland
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40
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Durlik M, Rancewicz Z, Gaciong Z, Rowińska D, Nowaczyk M, Korczak-Kowalska G, Walecka-Zielecka B, Kozłowska B, Madej K, Wyzgał J, Gradowska L, Lao M. Treatment of chronic hepatitis B and C with interferon-alpha in renal allograft recipients: preliminary results. Transpl Int 2001; 7 Suppl 1:S343-5. [PMID: 11271247 DOI: 10.1111/j.1432-2277.1994.tb01387.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We evaluated the effects of treatment with interferon (IFN) on liver disease and renal allograft function in ten immunosuppressed cadaver kidney recipients. Two females and eight males (mean age 39 years) with biopsy-proven chronic active hepatitis (n = 8) or persistent hepatitis (n = 2) and serum positive for hepatitis B surface antigen (HBsAg) and HBe antigen (n = 5) or serum positive for anti-HCV antibodies (n = 3) or serum positive for HBsAg, anti-HCV and anti-HDV antibodies (n = 2) received 3 million units IFN thrice weekly of 6 months. All patients responded with a reduction in serum aminotransferase activity and in five of them liver function completely normalized. Three patients among five infected with HBV cleared HBeAg. During the follow-up period liver function remained stable in 9 patients after discontinuation of IFN therapy. Three patients lost their grafts due to rejection 1, 2, and 4 months after IFN therapy, respectively. In six patients renal function remained stable during and after IFN therapy. We conclude that in selected groups of renal allograft recipients IFN can be used safely and effectively for the treatment of chronic viral hepatitis.
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Affiliation(s)
- M Durlik
- Transplantation Institute, Warsaw School of Medicine, Poland
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41
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Paczek L, Pazik J, Teschner M, Schaefer RM, Rowinski W, Szmidt J, Lao M, Abgarowicz K, Gradowska L, Morzycka-Michalik M, Heidland A. Human chronic kidney allograft rejection is accompanied by increased intraglomerular cathepsin B and L activity. Transpl Int 2001; 7 Suppl 1:S311-3. [PMID: 11271236 DOI: 10.1111/j.1432-2277.1994.tb01377.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The major reason for late graft losses is chronic rejection. Recently, a large number of studies have indicated that proteolytic enzymes play an important role as mediators of glomerular injury. The cysteine proteinases cathepsins B and L degrade structural matrix proteins such as type I collagen and laminin. We investigated intraglomerular protease activities in 12 patients after kidney graftectomy because of end-stage renal disease following chronic rejection. A group of 12 patients undergoing nephrectomy because of cancer served as controls using only non-involved parts of the kidney. The activities of cathepsins B and L in homogenates of isolated glomeruli were measured fluorometrically methylcoumarylamide substrates and related to DNA content. In rejected kidney allografts we observed significantly enhanced intraglomerular cathepsin B activity and cathepsin B + L activity.
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Affiliation(s)
- L Paczek
- Transplantation Institute, Warsaw, Poland
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42
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Lao M, Setty S, Foss C. Antiphospholipid antibody syndrome. A literature review. Minn Med 2001; 84:42-6. [PMID: 11367816] [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: 04/16/2023]
Abstract
Antiphospholipid syndrome (APS) occurs as a primary or secondary syndrome and has various manifestations, including arterial and venous thrombosis, thrombocytopenia, fetal loss, livedo reticularis, and cardiac and neurological sequelae. APS is linked with autoantibodies that were originally thought to have specificity for negatively charged phospholipids. Recent data suggest specificity for different phospholipid-binding plasma proteins, including 2-glycoprotein I, prothrombin, protein C, and protein S. The most well-known antiphospholipid antibodies are lupus anticoagulant and anticardiolipin antibody. These antibodies are detected through lupus anticoagulant assays, anticardiolipin assays, and certain serologic tests for syphilis. This article describes 2 cases encountered in our clinical work and reviews the literature on APS.
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Affiliation(s)
- M Lao
- University of Minnesota, USA
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Perkowska A, Elhasade AS, Gaciong Z, Durlik M, Placha G, Kukula K, Galazka Z, Lao M. An association between fibrinolytic activity and graft function in kidney transplantation recipients. Transplant Proc 2001; 33:409-11. [PMID: 11266887 DOI: 10.1016/s0041-1345(00)02071-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- A Perkowska
- Transplantation Institute, Medical University, Warsaw, Poland
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Kwiatkowski A, Danielewicz R, Kosieradzki M, Polak WP, Wszola M, Fesolowicz S, Michalak G, Lisik W, Malanowski P, Lao M, Paczek L, Walaszewski JE, Rowiński WA. Six-year experience in continuous hypothermic pulsatile perfusion kidney preservation. Transplant Proc 2001; 33:913-5. [PMID: 11267127 DOI: 10.1016/s0041-1345(00)02267-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- A Kwiatkowski
- Department of General and Transplantation Surgery, Medical University of Warsaw, Poland
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45
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Durlik M, Siennicka J, Litwińska B, Majchrzak J, Trzcińska A, Samsel R, Lewandowska D, Chmura A, Paçzek L, Lao M, Kańtoch M, Rowiński W. Clinical manifestations and diagnosis of cytomegalovirus infection in renal allograft recipients. Transplant Proc 2001; 33:1237-9. [PMID: 11267275 DOI: 10.1016/s0041-1345(00)02403-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- M Durlik
- Transplantation Institute, The Medical University of Warsaw, Warsaw, Poland
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46
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Ponticelli C, Yussim A, Cambi V, Legendre C, Rizzo G, Salvadori M, Kahn D, Kashi SH, Salmela K, Fricke L, Garcia-Martinez J, Lechler R, Heemann U, Monteon F, Ortuño J, Amenabar JJ, Arias M, Nicholson ML, Sperschneider H, Abendroth D, Gracida C, Lao M, Sever MS, Lameire N, Sanchez-Fructuoso A, Bascì A, Segoloni G, Connolly J, Altieri P, Akoh J, Prestele H, Girault D. Basiliximab significantly reduces acute rejection in renal transplant patients given triple therapy with azathioprine. Transplant Proc 2001; 33:1009-10. [PMID: 11267167 DOI: 10.1016/s0041-1345(00)02307-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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47
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Nowacka-Cieciura E, Durlik M, Cieciura T, Tałałaj M, Kukuła K, Lewandowska D, Gałazka Z, Lao M, Rowiński W. Positive effect of steroid withdrawal on bone mineral density in renal allograft recipients. Transplant Proc 2001; 33:1273-7. [PMID: 11267289 DOI: 10.1016/s0041-1345(00)02475-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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48
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Siennicka J, Durlik M, Litwińska B, Trzcińska A, Samsel R, Lewandowska D, Paczek L, Lao M, Rowiński W, Kańtoch M. Usefulness of hybridization and PCR methods in monitoring of CMV infection in renal transplant recipients. Ann Transplant 2000; 5:21-4. [PMID: 10850605] [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: 02/16/2023] Open
Abstract
The purpose of this work was to compare hybridization and PCR methods as diagnostic tests in diagnosing and monitoring CMV infection. The investigation was performed in a group of 24 renal transplant recipients treated with ATG. The results we obtained suggest that quantitative variant of hybridization is more useful in diagnosing the infection than PCR, because it enables to monitor the infection. DNA CMV level of about 60 pg/ml or the increasing level in the subsequent samples should be a sign to start antiviral therapy.
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Affiliation(s)
- J Siennicka
- Department of Virology, National Institute of Hygiene, Warsaw, Poland
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49
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Durlik M, Siennicka J, Litwińska B, Majchrzak J, Paczek L, Lao M, Samsel R, Chmura A, Kańtoch M. Comparison of antigenemia (pp65) assay and polymerase chain reaction in diagnosis of cytomegalovirus infection in renal transplant recipients treated with ATG. Transplant Proc 2000; 32:1350-2. [PMID: 10995976 DOI: 10.1016/s0041-1345(00)01254-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- M Durlik
- Transplantation Institute, Medical University of Warsaw, Warsaw, Poland
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50
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Serafinowicz A, Kukuła K, Cieciura T, Shaibani B, Baczkowska T, Soin J, Sadowska A, Nowacka-Cieciura E, Lewandowska D, Rell K, Durlik M, Lao M. Homocysteine and lipid peroxidation products: important atherosclerosis risk factors in renal allograft recipients? Transplant Proc 2000; 32:1367-8. [PMID: 10995981 DOI: 10.1016/s0041-1345(00)01259-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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