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Soukup J, Manethova M, Stejskal V, Novakova M, Duskova J, Hornychova H, Hacova M, Staniczkova-Zambo I, Zelinka T, Kosak M, Cesak T, Netuka D, Ryska A, Gabalec F. Hand2 Immunohistochemistry in the Diagnosis of Paragangliomas and Other Neuroendocrine Neoplasms. Endocr Pathol 2024; 35:14-24. [PMID: 38416360 DOI: 10.1007/s12022-024-09803-6] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/08/2024] [Indexed: 02/29/2024]
Abstract
Hand2 is a core transcription factor responsible for chromaffin cell differentiation. However, its potential utility in surgical pathology has not been studied. Thus, we aimed to investigate its expression in paragangliomas, other neuroendocrine neoplasms (NENs), and additional non-neuroendocrine tumors. We calibrated Hand2 immunohistochemistry on adrenal medulla cells and analyzed H-scores in 46 paragangliomas (PGs), 9 metastatic PGs, 21 cauda equina neuroendocrine tumors (CENETs), 48 neuroendocrine carcinomas (NECs), 8 olfactory neuroblastomas (ONBs), 110 well-differentiated NETs (WDNETs), 10 adrenal cortical carcinomas, 29 adrenal cortical adenomas, 8 melanomas, 41 different carcinomas, and 10 gastrointestinal stromal tumors (GISTs). Both tissue microarrays (TMAs) and whole sections (WSs) were studied. In 171 NENs, previously published data on Phox2B and GATA3 were correlated with Hand2. Hand2 was positive in 98.1% (54/55) PGs, but only rarely in WDNETs (9.6%, 10/104), CENETs (9.5%, 2/21), NECs (4.2%, 2/48), or ONBs (12.5%, 1/8). Any Hand2 positivity was 98.1% sensitive and 91.7% specific for the diagnosis of PG. The Hand2 H-score was significantly higher in primary PGs compared to Hand2-positive WDNETs (median 166.3 vs. 7.5; p < 0.0001). Metastatic PGs were positive in 88.9% (8/9). No Hand2 positivity was observed in any adrenal cortical neoplasm or other non-neuroendocrine tumors, with exception of 8/10 GISTs. Parasympathetic PGs showed a higher Hand2 H-score compared to sympathetic PGs (median H-scores 280 vs. 104, p < 0.0001). Hand2 positivity in NENs serves as a reliable marker of primary and metastatic PG, since other NENs only rarely exhibit limited Hand2 positivity.
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Affiliation(s)
- Jiri Soukup
- Department of Pathology, Military University Hospital Prague, U Vojenske Nemocnice 1200, Praha 6, 169 02, Prague, Czech Republic.
- The Fingerland Department of Pathology, Charles University, Faculty of Medicine in Hradec Králové and University Hospital Hradec Králové, Sokolska 582, 500 05, Hradec Kralove, Czech Republic.
- Department of Pathology, Charles University, First Faculty of Medicine and General University Hospital in Prague, Studnickova, 2039, 128 00, Nové Mesto, Prague, Czech Republic.
| | - Monika Manethova
- The Fingerland Department of Pathology, Charles University, Faculty of Medicine in Hradec Králové and University Hospital Hradec Králové, Sokolska 582, 500 05, Hradec Kralove, Czech Republic
| | - Vaclav Stejskal
- The Fingerland Department of Pathology, Charles University, Faculty of Medicine in Hradec Králové and University Hospital Hradec Králové, Sokolska 582, 500 05, Hradec Kralove, Czech Republic
| | - Marie Novakova
- Department of Pathology, Military University Hospital Prague, U Vojenske Nemocnice 1200, Praha 6, 169 02, Prague, Czech Republic
| | - Jaroslava Duskova
- Department of Pathology, Charles University, First Faculty of Medicine and General University Hospital in Prague, Studnickova, 2039, 128 00, Nové Mesto, Prague, Czech Republic
| | - Helena Hornychova
- The Fingerland Department of Pathology, Charles University, Faculty of Medicine in Hradec Králové and University Hospital Hradec Králové, Sokolska 582, 500 05, Hradec Kralove, Czech Republic
| | - Maria Hacova
- Department of Pathology, The Regional Hospital Pardubice, Pardubice, Czech Republic
| | - Iva Staniczkova-Zambo
- 1st Department of Pathology, St. Anne's University Hospital and Faculty of Medicine , Masaryk University, Pekarská 664/53, 602 00, Brno-stred, Brno, Czech Republic
| | - Tomas Zelinka
- Centre for Hypertension, 3rd Department of Medicine, Charles University, First Faculty of Medicine and General University Hospital in Prague, Prague, Czech Republic
| | - Mikulas Kosak
- Department of Internal Medicine, First Faculty of Medicine, Charles University and Military University Hospital, Prague, Czech Republic
| | - Tomas Cesak
- Department of Neurosurgery, Charles University, Faculty of Medicine in Hradec Králové and University Hospital Hradec Králové, Sokolska 582, 500 05, Hradec Kralove, Czech Republic
| | - David Netuka
- Department of Neurosurgery and Neurooncology, 1st Medical Faculty, Charles University, Military University Hospital Prague, U Vojenske Nemocnice 1200, Praha 6, 169 02, Prague, Czech Republic
| | - Ales Ryska
- The Fingerland Department of Pathology, Charles University, Faculty of Medicine in Hradec Králové and University Hospital Hradec Králové, Sokolska 582, 500 05, Hradec Kralove, Czech Republic
| | - Filip Gabalec
- 4th Department of Internal Medicine, Charles University, Faculty of Medicine in Hradec Králové and University Hospital Hradec Králové, Sokolska 582, 500 05, Hradec Kralove, Czech Republic
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Fajfr M, Pajer P, Ruzek D, Sleha R, Janovska S, Bohonek M, Kabickova H, Kubicková P, Stefanik M, Strakova P, Bostik P. Multicentric evaluation of sensitivity of eight commercial anti-SARS-CoV-2 antibody assays and their correlation to virus neutralization titers in seropositive subjects. Sci Rep 2024; 14:1421. [PMID: 38228735 PMCID: PMC10792077 DOI: 10.1038/s41598-024-51968-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: 06/07/2023] [Accepted: 01/11/2024] [Indexed: 01/18/2024] Open
Abstract
Diagnosis of SARS-CoV-2 virus is mainly based on direct detection. Determination of specific antibodies has been used mostly for epidemiological reasons. However, select immunoassays showed good correlation to plaque reduction virus neutralization test (PRNT) in smaller patient cohorts, which suggests their potential as predictors of virus neutralization titer. A total of 3,699 samples from Covid-19 patients were included in the multicentric study performed in the Czech Republic. Anti-SARS-CoV-2 antibody levels were evaluated by 8 commercial antibody assays. Simultaneously, PRNT evaluations were performed with the SARS-CoV-2 B.1.258 variant. All immunoassays showed an overall high true positive diagnostic value ranging from 79.17 to 98.04%. Several commercial EIA methods showed highly positive correlation between the assay results and PRNT levels, e.g., Liaison CoV-2 TrimericS IgG DiaSorin (Spearman r = 0.8833; Architect SASRS-CoV-2 IgG Abbott (r = 0.7298); NovaLisa SARS-CoV-2 IgG NovaTec (r = 0.7103) and Anti-SARS-CoV-2 ELISA IgG Euroimmun (r = 0.7094). While this correlation was less positive for other assays, those, conversely, presented higher true positive values. For most immunoassays, the positive percent agreement of the results was ≥ 95% in sera exhibiting PRNT levels of 1:80 and higher. The assays tested have shown variable correlation to PRNT. Those possessing high positive predictive values serve well as qualitative tests, while others can be utilised as quantitative tests highly predictive of neutralization antibody levels.
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Affiliation(s)
- Miroslav Fajfr
- Institute of Clinical Microbiology, University Hospital in Hradec Kralove, Sokolska 581, Hradec Kralove, 50005, Czech Republic
- Faculty of Medicine in Hradec Kralove, Charles University, Hradec Kralove, Czech Republic
| | - Petr Pajer
- Military Health Institute, Prague, Czech Republic
| | - Daniel Ruzek
- Department of Virology, Veterinary Research Institute, Brno, Czech Republic
- Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, Ceske Budejovice, Czech Republic
- Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Radek Sleha
- Department of Epidemiology, Military Faculty of Medicine, University of Defence, Hradec Kralove, Czech Republic
| | - Sylva Janovska
- Department of Epidemiology, Military Faculty of Medicine, University of Defence, Hradec Kralove, Czech Republic
| | - Milos Bohonek
- Department of Hematology and Blood Transfusion, Military University Hospital Prague, Praha, Czech Republic
- Faculty of Biomedical Engineering, Czech Technical University in Prague, Prague, Czech Republic
| | | | | | - Michal Stefanik
- Department of Virology, Veterinary Research Institute, Brno, Czech Republic
- Department of Hematology and Blood Transfusion, Military University Hospital Prague, Praha, Czech Republic
| | - Petra Strakova
- Department of Virology, Veterinary Research Institute, Brno, Czech Republic
- Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, Ceske Budejovice, Czech Republic
- Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Pavel Bostik
- Institute of Clinical Microbiology, University Hospital in Hradec Kralove, Sokolska 581, Hradec Kralove, 50005, Czech Republic.
- Faculty of Medicine in Hradec Kralove, Charles University, Hradec Kralove, Czech Republic.
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Vanek P, Svoboda N, Bradac O, Malik J, Kaiser R, Netuka D. Clinical and radiological results of TLIF surgery with titanium-coated PEEK or uncoated PEEK cages: a prospective single-centre randomised study. Eur Spine J 2024; 33:332-338. [PMID: 37737497 DOI: 10.1007/s00586-023-07947-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 04/30/2023] [Accepted: 09/06/2023] [Indexed: 09/23/2023]
Abstract
BACKGROUND A comparison of fusion rates and clinical outcomes of instrumented transforaminal interbody fusion (TLIF) between polyetheretherketone (PEEK) and titanium-coated PEEK (Ti-PEEK) cages is not well documented. METHODS A single-centre, prospective, randomised study included patients who underwent one-level TLIF between L3-S1 segments. Patients were randomised into one of two groups: TLIF surgery with the PEEK cage and TLIF surgery with the Ti-PEEK cage. Clinical results were measured. All patients were assessed by repeated X-rays and 3D CT scans. Cage integration was assessed using a modified Bridwell classification. The impact of obesity and smoking on fusion quality was also analysed. Patients in both groups were followed up for 2 years. RESULTS Altogether 87 patients were included in the study: of these 87 patients, 81 (93.1%) completed the 2-year follow-up. A significant improvement in clinical outcome was found in the two measurements scales in both groups (RM: p = 0.257, VAS: p = 0.229). There was an increase in CobbS and CobbL angle in both groups (p = 0.172 for CobbS and p = 0.403for CobbL). Bony fusion was achieved in 37 of 40 (92.5%) patients in the TiPEEK group and 35 of 41 (85.4%) in the PEEK group (p = 0.157). Cage subsided in 2 of 40 patients (5%) in the TiPEEK group and 11 of 41 (26.8%) in the PEEK group (p = 0.007). Body mass index > 30 and smoking were not predictive factors of bony fusion achievement. CONCLUSION There is no significant advantage of TiPEEK cages over PEEK cages in clinical outcome and fusion rate 2 years after surgery.
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Affiliation(s)
- P Vanek
- Department of Neurosurgery and Neurooncology, First Faculty of Medicine, Charles University in Prague and Military University Hospital Prague, U Vojenskénemocnice 1200/2, 16000, Prague 6, Czech Republic
| | - N Svoboda
- Department of Neurosurgery and Neurooncology, First Faculty of Medicine, Charles University in Prague and Military University Hospital Prague, U Vojenskénemocnice 1200/2, 16000, Prague 6, Czech Republic.
| | - O Bradac
- Department of Neurosurgery and Neurooncology, First Faculty of Medicine, Charles University in Prague and Military University Hospital Prague, U Vojenskénemocnice 1200/2, 16000, Prague 6, Czech Republic
| | - J Malik
- Department of Neurosurgery and Neurooncology, First Faculty of Medicine, Charles University in Prague and Military University Hospital Prague, U Vojenskénemocnice 1200/2, 16000, Prague 6, Czech Republic
| | - R Kaiser
- Department of Neurosurgery and Neurooncology, First Faculty of Medicine, Charles University in Prague and Military University Hospital Prague, U Vojenskénemocnice 1200/2, 16000, Prague 6, Czech Republic
| | - D Netuka
- Department of Neurosurgery and Neurooncology, First Faculty of Medicine, Charles University in Prague and Military University Hospital Prague, U Vojenskénemocnice 1200/2, 16000, Prague 6, Czech Republic
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Černý M, Lesáková V, Soukup J, Sedlák V, Šíma L, May M, Netuka D, Štěpánek F, Beneš V. Utility of texture analysis for objective quantitative ex vivo assessment of meningioma consistency: method proposal and validation. Acta Neurochir (Wien) 2023; 165:4203-4211. [PMID: 38044374 DOI: 10.1007/s00701-023-05867-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 10/20/2023] [Indexed: 12/05/2023]
Abstract
BACKGROUND Tumor consistency is considered to be a critical factor for the surgical removal of meningiomas and its preoperative assessment is intensively studied. A significant drawback in the research of predictive methods is the lack of a clear shared definition of tumor consistency, with most authors resorting to subjective binary classification labeling the samples as "soft" and "hard." This classification is highly observer-dependent and its discrete nature fails to capture the fine nuances in tumor consistency. To compensate for these shortcomings, we examined the utility of texture analysis to provide an objective observer-independent continuous measure of meningioma consistency. METHODS A total of 169 texturometric measurements were conducted using the Brookfield CT3 Texture Analyzer on meningioma samples from five patients immediately after the removal and on the first, second, and seventh postoperative day. The relationship between measured stiffness and time from sample extraction, subjectively assessed consistency grade and histopathological features (amount of collagen and reticulin fibers, presence of psammoma bodies, predominant microscopic morphology) was analyzed. RESULTS The stiffness measurements exhibited significantly lower variance within a sample than among samples (p = 0.0225) and significant increase with a higher objectively assessed consistency grade (p = 0.0161, p = 0.0055). A significant negative correlation was found between the measured stiffness and the time from sample extraction (p < 0.01). A significant monotonic relationship was revealed between stiffness values and amount of collagen I and reticulin fibers; there were no statistically significant differences between histological phenotypes in regard to presence of psammoma bodies and predominant microscopic morphology. CONCLUSIONS We conclude that the values yielded by texture analysis are highly representative of an intrinsic consistency-related quality of the sample despite the influence of intra-sample heterogeneity and that our proposed method can be used to conduct quantitative studies on the role of meningioma consistency.
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Affiliation(s)
- Martin Černý
- Department of Neurosurgery and Neurooncology, Military University Hospital, Prague, Czech Republic.
- 1st Faculty of Medicine, Charles University, Prague, Czech Republic.
| | - Veronika Lesáková
- Department of Chemical Engineering, University of Chemistry and Technology, Prague, Czech Republic
| | - Jiří Soukup
- Department of Pathology, Military University Hospital, Prague, Czech Republic
| | - Vojtěch Sedlák
- Department of Radiodiagnostics, Military University Hospital, Prague, Czech Republic
| | - Luděk Šíma
- 1st Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Michaela May
- Department of Neurosurgery and Neurooncology, Military University Hospital, Prague, Czech Republic
| | - David Netuka
- Department of Neurosurgery and Neurooncology, Military University Hospital, Prague, Czech Republic
| | - František Štěpánek
- Department of Chemical Engineering, University of Chemistry and Technology, Prague, Czech Republic
| | - Vladimír Beneš
- Department of Neurosurgery and Neurooncology, Military University Hospital, Prague, Czech Republic
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Kaiser R, Varga M, Lang O, Waldauf P, Vaněk P, Saur K, Beneš V, Netuka D. Spinal fusion for single-level SPECT/CT positive lumbar degenerative disc disease: the SPINUS I study. Acta Neurochir (Wien) 2023; 165:2633-2640. [PMID: 37347294 PMCID: PMC10477220 DOI: 10.1007/s00701-023-05666-8] [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: 03/23/2023] [Accepted: 05/29/2023] [Indexed: 06/23/2023]
Abstract
INTRODUCTION AND PURPOSE With current imaging modalities and diagnostic tests, identifying pain generators in patients with non-specific chronic low back pain (CLBP) is difficult. There is growing evidence of the effectiveness of SPECT/CT examination in diagnosing the source of pain in the spine. The study aims to investigate the effect of posterior interbody fusion on a single-level SPECT/CT positive lumbar degenerative disc disease (DDD). MATERIAL AND METHODS This is a prospective study of patients with chronic low back pain (CLBP) operated on for a single-level SPECT/CT positive DDD. Primary outcomes were changes in visual analogue scale (VAS) scores and the Oswestry Disability Index (ODI). Secondary outcomes were complications, return to work, satisfaction and willingness to re-undergo surgery. RESULTS During a 3-year period, 38 patients underwent single-level fusion surgery. The mean preoperative VAS score of 8.4 (± 1.1) decreased to 3.2 (± 2.5, p < 0.001) and the mean preoperative ODI of 51.5 (± 7.3) improved to 20.7 (± 14.68, p < 0.001) at a 2-year follow-up. A minimum clinically important difference (30% reduction in VAS and ODI) was achieved in 84.2% of patients. Some 71% of patients were satisfied with the surgery results and 89.4% would undergo surgery again. There were four complications, and two patients underwent revision surgery. Some 82.9% of patients returned to work. CONCLUSION Fusion for one-level SPECT/CT positive lumbar DDD resulted in substantial clinical improvement and satisfaction with surgical treatment. Therefore, SPECT/CT imaging could be useful in assessing patients with CLBP, especially those with unclear MRI findings. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT04876586.
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Affiliation(s)
- Radek Kaiser
- Department of Neurosurgery and Neurooncology, First Faculty of Medicine, Charles University and Military University Hospital Prague, U Vojenské Nemocnice 1200, 16902, Prague, Czech Republic.
| | - Michal Varga
- Department of Spinal Surgery, First Faculty of Medicine, Charles University and University Hospital Motol, Prague, Czech Republic
| | - Otto Lang
- Department of Nuclear Medicine, Third Faculty of Medicine, Charles University and University Hospital Kralovske Vinohrady, Prague, Czech Republic
| | - Petr Waldauf
- Department of Anaesthesia and Intensive Care Medicine, Third Faculty of Medicine, Charles University and University Hospital Kralovske Vinohrady, Prague, Czech Republic
| | - Petr Vaněk
- Department of Neurosurgery and Neurooncology, First Faculty of Medicine, Charles University and Military University Hospital Prague, U Vojenské Nemocnice 1200, 16902, Prague, Czech Republic
| | - Karel Saur
- Department of Neurosurgery and Neurooncology, First Faculty of Medicine, Charles University and Military University Hospital Prague, U Vojenské Nemocnice 1200, 16902, Prague, Czech Republic
| | - Vladimír Beneš
- Department of Neurosurgery and Neurooncology, First Faculty of Medicine, Charles University and Military University Hospital Prague, U Vojenské Nemocnice 1200, 16902, Prague, Czech Republic
| | - David Netuka
- Department of Neurosurgery and Neurooncology, First Faculty of Medicine, Charles University and Military University Hospital Prague, U Vojenské Nemocnice 1200, 16902, Prague, Czech Republic
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Pulkrabkova L, Muckova L, Hrabinova M, Sorf A, Kobrlova T, Jost P, Bezdekova D, Korabecny J, Jun D, Soukup O. Differentiated SH-SY5Y neuroblastoma cells as a model for evaluation of nerve agent-associated neurotoxicity. Arch Toxicol 2023; 97:2209-2217. [PMID: 37221426 DOI: 10.1007/s00204-023-03525-0] [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: 03/13/2023] [Accepted: 05/11/2023] [Indexed: 05/25/2023]
Abstract
Organophosphorus compounds (OPs) involving life-threatening nerve agents (NA) have been known for several decades. Despite a clear mechanism of their lethality caused by the irreversible inhibition of acetylcholinesterase (AChE) and manifested via overstimulation of peripheral nicotinic and muscarinic acetylcholine (ACh) receptors, the mechanism for central neurotoxicity responsible for acute or delayed symptoms of the poisoning has not been thoroughly uncovered. One of the reasons is the lack of a suitable model. In our study, we have chosen the SH-SY5Y model in both the differentiated and undifferentiated state to study the effects of NAs (GB, VX and A234). The activity of expressed AChE in cell lysate assessed by Ellman's method showed 7.3-times higher activity in differentiated SH-SY5Y cells in contrast to undifferentiated cells, and with no involvement of BuChE as proved by ethopropazine (20 µM). The activity of AChE was found to be, in comparison to untreated cells, 16-, 9.3-, and 1.9-times lower upon A234, VX, and GB (100 µM) administration respectively. The cytotoxic effect of given OPs expressed as the IC50 values for differentiated and undifferentiated SH-SY5Y, respectively, was found 12 mM and 5.7 mM (A234), 4.8 mM and 1.1 mM (VX) and 2.6 mM and 3.8 mM (GB). In summary, although our results confirm higher AChE expression in the differentiated SH-SY5Y cell model, the such higher expression does not lead to a more pronounced NA cytotoxic effect. On the contrary, higher expression of AChE may attenuate NA-induced cytotoxicity by scavenging the NA. Such finding highlights a protective role for cholinesterases by scavenging Novichoks (A-agents). Second, we confirmed the mechanism of cytotoxicity of NAs, including A-agents, can be ascribed rather to the non-specific effects of OPs than to AChE-mediated effects.
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Affiliation(s)
- Lenka Pulkrabkova
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defence, Trebesska 1575, Hradec Kralove, Czech Republic
- University Hospital Hradec Kralove, Biomedical Research Center, Sokolska 581, Hradec Kralove, Czech Republic
| | - Lubica Muckova
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defence, Trebesska 1575, Hradec Kralove, Czech Republic
- University Hospital Hradec Kralove, Biomedical Research Center, Sokolska 581, Hradec Kralove, Czech Republic
| | - Martina Hrabinova
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defence, Trebesska 1575, Hradec Kralove, Czech Republic
- University Hospital Hradec Kralove, Biomedical Research Center, Sokolska 581, Hradec Kralove, Czech Republic
| | - Ales Sorf
- Department of Social and Clinical Pharmacy, Faculty of Pharmacy in Hradec Kralove, Charles University, Akademika Heyrovskeho 1203, Hradec Kralove, Czech Republic
| | - Tereza Kobrlova
- University Hospital Hradec Kralove, Biomedical Research Center, Sokolska 581, Hradec Kralove, Czech Republic
| | - Petr Jost
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defence, Trebesska 1575, Hradec Kralove, Czech Republic
| | - Dagmar Bezdekova
- Department of Experimental Neurobiology, National Institute of Mental Health, Topolova 748, Klecany, Czech Republic
- 3rd Faculty of Medicine of Charles University, Ruska 2411/87, Prague, Czech Republic
| | - Jan Korabecny
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defence, Trebesska 1575, Hradec Kralove, Czech Republic
- University Hospital Hradec Kralove, Biomedical Research Center, Sokolska 581, Hradec Kralove, Czech Republic
| | - Daniel Jun
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defence, Trebesska 1575, Hradec Kralove, Czech Republic.
| | - Ondrej Soukup
- University Hospital Hradec Kralove, Biomedical Research Center, Sokolska 581, Hradec Kralove, Czech Republic.
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Chochola A, Bartoníček J, Douša P, Tuček M. Long-term results of valgus intertrochanteric osteotomy for partial avascular necrosis of the femoral head after femoral neck fracture in adolescents. BMC Musculoskelet Disord 2023; 24:460. [PMID: 37277815 DOI: 10.1186/s12891-023-06598-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 05/30/2023] [Indexed: 06/07/2023] Open
Abstract
PURPOSE The study evaluates long-term results in patients treated by valgus intertrochanteric osteotomy (VITO) for partial avascular necrosis of the femoral head (ANFH) after fracture of the femoral neck in adolescent age. Although this method is mentioned in literature frequently, there are only few studies in the literature dealing with it in detail. METHODS Authors evaluated five patients at the interval of 15 to 20 years following VITO. The mean age of the patients at the time of injury was 13.6 years and at the time of VITO 16.7 years. The studied parameters included resorption of necrotic segment of femoral head, development of posttraumatic osteoarthritis and leg shortening. RESULTS Comparison of radiographs and MRI scans before and after VITO showed resorption of the necrotic segment of the femoral head and its remodeling in all five patients. However, two patients gradually developed slight osteoarthritic changes. In one patient, remodeling of the femoral head occurred during the first 6 years postoperatively. Subsequently, the patient developed severe osteoarthritis with marked clinical symptoms. CONCLUSION VITO can improve the long-term function of the hip joint in adolescents with ANFH after a femoral neck fracture, but cannot restore completely the original shape and structure of the femoral head.
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Affiliation(s)
- Antonín Chochola
- Department of Orthopaedics, First Faculty of Medicine, Charles University and Military University Hospital Prague, U Vojenské Nemocnice 1200, 169 02, Prague 6, Czech Republic
| | - Jan Bartoníček
- Department of Orthopaedics, First Faculty of Medicine, Charles University and Military University Hospital Prague, U Vojenské Nemocnice 1200, 169 02, Prague 6, Czech Republic
| | - Pavel Douša
- Department of Orthopaedics and Traumatology, Third Faculty of Medicine, Charles University and University Hospital Královské Vinohrady, Šrobárova 1150/50, 100 34, Prague 10, Czech Republic
| | - Michal Tuček
- Department of Orthopaedics, First Faculty of Medicine, Charles University and Military University Hospital Prague, U Vojenské Nemocnice 1200, 169 02, Prague 6, Czech Republic.
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Burkartová K, Dresler J, Rídl J, Falteisek L. Population Genomics of Microbial Biostalactites: Non-recombinogenic Genome Islands and Microdiversification by Transposons. Front Microbiol 2022; 13:828531. [PMID: 35265061 PMCID: PMC8899612 DOI: 10.3389/fmicb.2022.828531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 01/17/2022] [Indexed: 11/13/2022] Open
Abstract
Intrapopulation genetic variability in prokaryotes is receiving increasing attention thanks to improving sequencing methods; however, the ability to distinguish intrapopulation variability from species clusters or initial stages of gene flow barrier development remains insufficient. To overcome this limitation, we took advantage of the lifestyle of Ferrovum myxofaciens, a species that may represent 99% of prokaryotic microbiome of biostalactites growing at acid mine drainage springs. We gained four complete and one draft metagenome-assembled F. myxofaciens genomes using Oxford Nanopore and Illumina sequencing and mapped the reads from each sample on the reference genomes to assess the intrapopulation variability. We observed two phenomena associated with intrapopulation variability: hypervariable regions affected by mobilome expansion called “scrapyards,” and variability in gene disruptions caused by transposons within each population. Both phenomena were previously described in prokaryotes. However, we present here for the first time scrapyard regression and the development of a new one. Nearly complete loss of intrapopulation short sequence variability in the old scrapyard and high variability in the new one suggest that localized gene flow suppression is necessary for scrapyard formation. Concerning the variable gene disruptions, up to 9 out of 41 occurrences per sample were located in highly conserved diguanylate cyclases/phosphodiesterases. We propose that microdiversification of life strategies may be an adaptive outcome of random diguanylate cyclase elimination. The mine biostalactites thus proved as a unique model system for describing genomic intrapopulation processes, as they offer easily sampleable units enriched in a single microbial species.
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Affiliation(s)
- Kateřina Burkartová
- Department of Philosophy and History of Science, Faculty of Science, Charles University, Prague, Czechia
| | - Jiří Dresler
- Military Medical Agency, Military Health Institute, Prague, Czechia
| | - Jakub Rídl
- Department of Zoology, Faculty of Science, Charles University, Prague, Czechia
- Laboratory of Genomics and Bioinformatics, Institute of Molecular Genetics, The Czech Academy of Sciences, Prague, Czechia
- *Correspondence: Jakub Rídl,
| | - Lukáš Falteisek
- Department of Ecology, Faculty of Science, Charles University, Prague, Czechia
- Lukáš Falteisek,
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Vozandychova V, Stojkova P, Hercik K, Rehulka P, Stulik J. The Ubiquitination System within Bacterial Host-Pathogen Interactions. Microorganisms 2021; 9:638. [PMID: 33808578 PMCID: PMC8003559 DOI: 10.3390/microorganisms9030638] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 03/15/2021] [Accepted: 03/16/2021] [Indexed: 12/17/2022] Open
Abstract
Ubiquitination of proteins, like phosphorylation and acetylation, is an important regulatory aspect influencing numerous and various cell processes, such as immune response signaling and autophagy. The study of ubiquitination has become essential to learning about host-pathogen interactions, and a better understanding of the detailed mechanisms through which pathogens affect ubiquitination processes in host cell will contribute to vaccine development and effective treatment of diseases. Pathogenic bacteria (e.g., Salmonella enterica, Legionella pneumophila and Shigella flexneri) encode many effector proteins, such as deubiquitinating enzymes (DUBs), targeting the host ubiquitin machinery and thus disrupting pertinent ubiquitin-dependent anti-bacterial response. We focus here upon the host ubiquitination system as an integral unit, its interconnection with the regulation of inflammation and autophagy, and primarily while examining pathogens manipulating the host ubiquitination system. Many bacterial effector proteins have already been described as being translocated into the host cell, where they directly regulate host defense processes. Due to their importance in pathogenic bacteria progression within the host, they are regarded as virulence factors essential for bacterial evasion. However, in some cases (e.g., Francisella tularensis) the host ubiquitination system is influenced by bacterial infection, although the responsible bacterial effectors are still unknown.
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Affiliation(s)
- Vera Vozandychova
- Department of Molecular Pathology and Biology, Faculty of Military Health Sciences, University of Defence, Trebesska 1575, 50001 Hradec Kralove, Czech Republic; (V.V.); (P.S.); (K.H.); (P.R.)
| | - Pavla Stojkova
- Department of Molecular Pathology and Biology, Faculty of Military Health Sciences, University of Defence, Trebesska 1575, 50001 Hradec Kralove, Czech Republic; (V.V.); (P.S.); (K.H.); (P.R.)
| | - Kamil Hercik
- Department of Molecular Pathology and Biology, Faculty of Military Health Sciences, University of Defence, Trebesska 1575, 50001 Hradec Kralove, Czech Republic; (V.V.); (P.S.); (K.H.); (P.R.)
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo namesti 542/2, 16000 Prague, Czech Republic
| | - Pavel Rehulka
- Department of Molecular Pathology and Biology, Faculty of Military Health Sciences, University of Defence, Trebesska 1575, 50001 Hradec Kralove, Czech Republic; (V.V.); (P.S.); (K.H.); (P.R.)
| | - Jiri Stulik
- Department of Molecular Pathology and Biology, Faculty of Military Health Sciences, University of Defence, Trebesska 1575, 50001 Hradec Kralove, Czech Republic; (V.V.); (P.S.); (K.H.); (P.R.)
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