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Bódi N, Polgár A, Kiss E, Mester Á, Poór G, Kéri S. Reduced volumes of the CA1 and CA4-dentate gyrus hippocampal subfields in systemic lupus erythematosus. Lupus 2017; 26:1378-1382. [PMID: 28355989 DOI: 10.1177/0961203317701845] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Introduction There is evidence for hippocampal dysfunctions in systemic lupus erythematosus (SLE), which may contribute to neuropsychiatric impairments. However, fine structural alterations of the hippocampus have not been investigated in SLE. Methods We measured the volume of hippocampal subfields in 18 SLE patients and 20 healthy control individuals matched for age, gender, and education. The MRI protocol included structural T1 volumes (Philips Achieva 3T scanner, magnetization-prepared rapid acquisition gradient echo (MPRAGE)). For image processing, we used the neuGRID platform and the longitudinal pipeline of FreeSurfer v6.0 with the "hipposubfields" flag. Results Patients with SLE showed reduced volumes of CA1 (Cornu Ammonis 1) and CA4-dentate gyrus subfields relative to the control individuals. Smaller CA1 volumes were associated with worse performance on the Addenbrooke's Cognitive Examination. Conclusions These preliminary results indicate a prominent vulnerability and functional relevance of the CA1 hippocampal subfield in SLE.
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Affiliation(s)
- N Bódi
- 1 National Institute of Rheumatology and Physiotherapy, Budapest, Hungary
| | - A Polgár
- 1 National Institute of Rheumatology and Physiotherapy, Budapest, Hungary
| | - E Kiss
- 1 National Institute of Rheumatology and Physiotherapy, Budapest, Hungary.,2 Rheumatology Division of Third Department of Medicine, Semmelweis University, Budapest, Hungary
| | - Á Mester
- 1 National Institute of Rheumatology and Physiotherapy, Budapest, Hungary
| | - G Poór
- 1 National Institute of Rheumatology and Physiotherapy, Budapest, Hungary.,2 Rheumatology Division of Third Department of Medicine, Semmelweis University, Budapest, Hungary
| | - S Kéri
- 3 Budapest University of Technology and Economics, Department of Cognitive Science, Budapest, Hungary.,4 Nyírő Gyula Hospital-National Institute of Psychiatry and Addictions, Budapest, Hungary.,5 University of Szeged, Department of Physiology, Szeged, Hungary
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2
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György B, Szabó TG, Turiák L, Wright M, Herczeg P, Lédeczi Z, Kittel Á, Polgár A, Tóth K, Dérfalvi B, Zelenák G, Böröcz I, Carr B, Nagy G, Vékey K, Gay S, Falus A, Buzás EI. Improved flow cytometric assessment reveals distinct microvesicle (cell-derived microparticle) signatures in joint diseases. PLoS One 2012. [PMID: 23185418 PMCID: PMC3502255 DOI: 10.1371/journal.pone.0049726] [Citation(s) in RCA: 111] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Introduction Microvesicles (MVs), earlier referred to as microparticles, represent a major type of extracellular vesicles currently considered as novel biomarkers in various clinical settings such as autoimmune disorders. However, the analysis of MVs in body fluids has not been fully standardized yet, and there are numerous pitfalls that hinder the correct assessment of these structures. Methods In this study, we analyzed synovial fluid (SF) samples of patients with osteoarthritis (OA), rheumatoid arthritis (RA) and juvenile idiopathic arthritis (JIA). To assess factors that may confound MV detection in joint diseases, we used electron microscopy (EM), Nanoparticle Tracking Analysis (NTA) and mass spectrometry (MS). For flow cytometry, a method commonly used for phenotyping and enumeration of MVs, we combined recent advances in the field, and used a novel approach of differential detergent lysis for the exclusion of MV-mimicking non-vesicular signals. Results EM and NTA showed that substantial amounts of particles other than MVs were present in SF samples. Beyond known MV-associated proteins, MS analysis also revealed abundant plasma- and immune complex-related proteins in MV preparations. Applying improved flow cytometric analysis, we demonstrate for the first time that CD3+ and CD8+ T-cell derived SF MVs are highly elevated in patients with RA compared to OA patients (p = 0.027 and p = 0.009, respectively, after Bonferroni corrections). In JIA, we identified reduced numbers of B cell-derived MVs (p = 0.009, after Bonferroni correction). Conclusions Our results suggest that improved flow cytometric assessment of MVs facilitates the detection of previously unrecognized disease-associated vesicular signatures.
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Affiliation(s)
- Bence György
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, Budapest, Hungary
| | - Tamás G. Szabó
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, Budapest, Hungary
| | - Lilla Turiák
- Chemical Research Center of the Hungarian Academy of Sciences, Budapest, Hungary
| | | | - Petra Herczeg
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, Budapest, Hungary
| | - Zsigmond Lédeczi
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, Budapest, Hungary
| | - Ágnes Kittel
- Institute of Experimental Medicine, Hungarian Academy of Sciences, Budapest, Hungary
| | - Anna Polgár
- National Institute of Rheumatology and Physiotherapy, Budapest, Hungary
| | - Kálmán Tóth
- Department of Orthopaedics, University of Szeged, Szeged, Hungary
| | - Beáta Dérfalvi
- 2 Department of Pediatrics, Semmelweis University, Budapest, Hungary
| | - Gergő Zelenák
- Military Hospital, National Health Institute, Department of Orthopaedics, Budapest, Hungary
| | - István Böröcz
- Military Hospital, National Health Institute, Department of Orthopaedics, Budapest, Hungary
| | - Bob Carr
- NanoSight Ltd., Amesbury, United Kingdom
| | - György Nagy
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, Budapest, Hungary
- Department of Rheumatology, Semmelweis University, Budapest, Hungary
| | - Károly Vékey
- Chemical Research Center of the Hungarian Academy of Sciences, Budapest, Hungary
| | - Steffen Gay
- Center for Experimental Rheumatology, Zurich Center for Integrative Human Physiology, USZ, Zurich, Switzerland
| | - András Falus
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, Budapest, Hungary
| | - Edit I. Buzás
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, Budapest, Hungary
- * E-mail:
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Kremlitzka M, Polgár A, Fülöp L, Kiss E, Poór G, Erdei A. Complement receptor type 1 (CR1, CD35) is a potent inhibitor of B-cell functions in rheumatoid arthritis patients. Int Immunol 2012; 25:25-33. [PMID: 22962438 DOI: 10.1093/intimm/dxs090] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
The involvement of B cells, complement activation and subsequent immune complex deposition has all been implicated in the pathogenesis of rheumatoid arthritis (RA). Although the reduced expression of complement receptor 1 (CR1, CD35) and 2 (CR2, CD21) on the B cells of RA patients has been known for a long time, their exact role in B-cell tolerance and autoimmunity is not yet fully understood. To get a deeper insight into the possible mechanisms, we studied the expression and function of CR1 and CR2 on various subsets of B cells of healthy donors and RA patients at various stages of the disease by FACS analysis, (3)H-thymidine incorporation and ELISA. We found that CD19(+)CD27(-) naive B cells up-regulate the expression of the inhibitory CR1 during differentiation to CD19(+)CD27(+) memory B cells both in healthy donors and in RA patients, whereas the expression of the activatory CR2 is down-regulated. This clearly demonstrates that the expression of these two antagonistic complement receptors is regulated differentially during the development of human B cells, a phenomenon which may influence the maintenance of peripheral B-cell tolerance. Our functional studies show that after clustering CR1 both by its natural ligand and To5 mAb, the inhibitory function of CD35 is maintained in RA patients, despite its significantly reduced expression compared with healthy individuals. Besides blocking B-cell receptor-induced proliferation, CR1 inhibits the differentiation of B cells to plasmablasts and their immunoglobulin production. Since the reduced expression of CR1 in RA patients does not affect its inhibitory function, this receptor might serve as a new target for therapeutical interventions.
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Affiliation(s)
- Mariann Kremlitzka
- Department of Immunology, Eötvös Loránd University, Pázmány Péter s. 1/C, Budapest H-1117, Hungary
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Brodszky V, Bálint P, Géher P, Hodinka L, Horváth G, Koó É, Péntek M, Polgár A, Seszták M, Szántó S, Ujfalussy I, Gulácsi L. Disease burden of psoriatic arthritis compared to rheumatoid arthritis, Hungarian experiment. Rheumatol Int 2011; 30:199-205. [PMID: 19381635 DOI: 10.1007/s00296-009-0936-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2009] [Accepted: 03/28/2009] [Indexed: 11/30/2022]
Abstract
The objectives of this study were to assess the costs of psoriatic arthritis (PsA) in Hungary and to identify key cost drivers among demographic and clinical variables and to compare cost-of-illness of PsA and rheumatoid arthritis (RA). Cross-sectional retrospective survey of 183 consecutive patients from eight rheumatology centres was conducted. Mean direct medical, direct non medical, indirect and total costs were 1,876, 794, 2,904 and 5,574 euros/patient/year, respectively. Total costs were in significant linear relationship with health assessment questionnaire score and psoriatic area severity index. Costs of RA were higher in all domains than of PsA. Our study was the first from the Eastern European region that provides cost-of-illness data on PsA. Our study revealed that functional status and severity of skin symptoms were the key cost drivers. The costs of PsA in Hungary were lower than in the high-income European countries.
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Affiliation(s)
- Valentin Brodszky
- Health Economics and Technology Assessment Research Centre, Corvinus University of Budapest, Fővám tér 8, 1093 Budapest, Hungary.
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5
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Polgár A, Rózsa C, Müller V, Matolcsi J, Poór G, Kiss EV. Devic's syndrome and SLE: challenges in diagnosis and therapeutic possibilities based on two overlapping cases. Autoimmun Rev 2010; 10:171-4. [PMID: 20920613 DOI: 10.1016/j.autrev.2010.09.021] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2010] [Accepted: 09/25/2010] [Indexed: 11/29/2022]
Abstract
Neuromyelitis optica (NMO, Devic's disease), an uncommon demyelinating neuro-immunological disease, can be associated with autoimmune diseases. In SLE associated forms anti-aquaporin-4 antibody positivity can help differentiating between SLE nerve system manifestation and NMO. In the literature rituximab, or immunoablative dose cyclophosphamide (CYC) was effective for the therapy resistant forms. Authors present 2 SLE overlapping NMO cases, one of them with SLE associated interstitial lung disease (ILD). In both cases neurological manifestations anticipated other SLE symptoms. Patients previously were treated with high dose corticosteroid therapy, plasmapheresis, and one of them with azathioprine, and the other one with oral CYC (which could not prevent flares). 0.5 g/m² body-surface monthly parenteral inductive CYC therapy was administered, in one patient followed by quarterly maintenance therapy. This patient completed her 18 month maintenance treatment and has been in neurological remission, but required steroid pulse and plasmapheresis for lung symptoms. The second patient had urogenital infection after the induction phase, followed by an exacerbation, requiring plasmapheresis and high dose parenteral corticosteroid treatment. After it he refused CYC therapy and has been taking azathioprine. He has no new symptoms, only residual ones. In our two patients conventional dose CYC therapy proved to be effective for NMO/SLE overlap, required only transient supportive therapy.
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Affiliation(s)
- Anna Polgár
- Department of Clinical Immunology, Adult and Children's Rheumatology, National Institute of Rheumatology and Physiotherapy, Budapest, Hungary.
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Brodszky V, Péntek M, Bálint PV, Géher P, Hajdu O, Hodinka L, Horváth G, Koó E, Polgár A, Seszták M, Szántó S, Ujfalussy I, Gulácsi L. Comparison of the Psoriatic Arthritis Quality of Life (PsAQoL) questionnaire, the functional status (HAQ) and utility (EQ-5D) measures in psoriatic arthritis: results from a cross-sectional survey. Scand J Rheumatol 2010; 39:303-9. [PMID: 20166848 DOI: 10.3109/03009740903468982] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVES To compare the Psoriatic Arthritis Quality of Life (PsAQoL) instrument, the Health Assessment Questionnaire (HAQ) as a measure of functional status, and the generic health status (utility) measure the EuroQoL (EQ-5D) in terms of ability to assess disease severity in psoriatic arthritis (PsA). METHODS The differences between known groups and correlations of the PsAQoL, the HAQ and the EQ-5D with clinical measures were analysed in a sample of 183 PsA patients. RESULTS Different severities of PsA determined by known groups were distinguished well by all three questionnaires; more severe disease was associated with significantly worse values of the instruments. The correlations revealed a strong relationship between each of the measures, and with the patients' pain on the visual analogue scale (VAS), the patient global VAS, and the Bath Ankylosing Spondylitis Disease Activity Index (BASDAI), and a weak relationship with the disease duration and the Psoriasis Area Severity Index (PASI). The PsAQoL also correlated strongly with the 28-joint Disease Activity Score (DAS28). CONCLUSIONS The PsAQoL, the HAQ, and the EQ-5D are able to distinguish well across levels of PsA severity.
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Affiliation(s)
- V Brodszky
- Health Economics and Technology Assessment Research Centre, Corvinus University of Budapest, Budapest, Fovám tér 8, Hungary.
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7
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Minier T, Péntek M, Brodszky V, Ecseki A, Kárpáti K, Polgár A, Czirják L, Gulácsi L. Cost-of-illness of patients with systemic sclerosis in a tertiary care centre. Rheumatology (Oxford) 2010; 49:1920-8. [PMID: 20571123 DOI: 10.1093/rheumatology/keq165] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE The aim of our study was to assess the costs of SSc and to analyse cost drivers. METHODS A cross-sectional survey of consecutive patients with SSc was performed in a rheumatology centre in Hungary. Clinical characteristics, the European Scleroderma Study Group activity index, disease severity scale (DSS), scleroderma HAQ (S-HAQ) and health care utilization were recorded. Cost calculation was performed and correlation with clinical variables was analysed. Results were compared with RA and PsA. RESULTS Eighty patients were involved: 72 (90%) women, mean age (s.d.) 57.4 (9.6) years and disease duration of 6.2 (6.6) years and 25% of the cases had dcSSc. Mean total cost was 9619 (s.d. 6444) euros/patient/year with rate of indirect cost being 56%. Disability-related productivity loss (55.2%) and hospitalization (28.3%) were the highest among the cost items. Patients with dcSSc had significantly higher direct costs (P = 0.005) compared with the lcSSc subset. Disease activity showed significant correlation with total costs, DSS and S-HAQ with direct costs. SSc-related costs were higher than in matched RA and PsA cases. CONCLUSIONS The cost-of-illness of SSc is high with a dominance of productivity loss related costs. Moreover, the disease activity is an important cost driver.
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Affiliation(s)
- Tünde Minier
- Department of Immunology and Rheumatology, Clinic Center, University of Pécs, Pécs, Akác u. 1., H-7632, Hungary.
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Polgár A, Rózsa C, Matolcsi J, Poór G, Kiss E. T.103. Pulse Cyclophosphamide Therapy can Prevent Neuromyelitis Optica Relapses in Systemic Lupus Erythematosus Associated Cases. Clin Immunol 2009. [DOI: 10.1016/j.clim.2009.03.236] [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: 11/15/2022]
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9
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György B, Tóthfalusi L, Nagy G, Pásztói M, Géher P, Lörinc Z, Polgár A, Rojkovich B, Ujfalussy I, Poór G, Pócza P, Wiener Z, Misják P, Koncz A, Falus A, Buzás EI. Natural autoantibodies reactive with glycosaminoglycans in rheumatoid arthritis. Arthritis Res Ther 2008; 10:R110. [PMID: 18789149 PMCID: PMC2592792 DOI: 10.1186/ar2507] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2008] [Revised: 08/27/2008] [Accepted: 09/12/2008] [Indexed: 11/10/2022] Open
Abstract
Introduction Although natural autoantibodies make up the majority of circulating immunoglobulins and are also present in high numbers in therapeutically used intravenous immunoglobulin preparations, they have received little attention and their precise role remains largely unknown. An increasing awareness of the importance of posttranslational autoantigen modifications and glycobiology led us to explore carbohydrate-reactive natural autoantibodies in patients with rheumatoid arthritis. This study examined systematic antibodies reactive to glycosaminoglycans (GAGs), the carbohydrate components of proteoglycans that are released in large amounts from degrading cartilage. Methods To measure antibodies reactive to six different types of GAGs, a specialised ELISA was used in which the carbohydrates were covalently linked to the plastic surface through a 2 nm spacer. Sera from rheumatoid arthritis patients (n = 66), umbilical cord serum samples (n = 11) and adult controls (n = 54) were studied. In order to explore cross-reactivity with microbial antigens, bacterial peptidoglycans and fungal polysaccharides were used. Sera and synovial fluid samples were also tested using a GlycoChip carbohydrate array to characterise individual carbohydrate recognition patterns. We followed a multistep statistical screening strategy for screening GAG-reactive antibodies as predictive disease markers. Results While anti-GAG antibodies were absent in the umbilical cord sera, they were readily detectable in adult controls and were significantly elevated in patients with rheumatoid arthritis (p < 0.001). Anti-GAG antibodies showed significant cross-reactivity among different types of GAGs. They also reacted with bacterial peptidoglycans and fungal polysaccharides. Interestingly, anti-chondroitin sulphate C IgM antibody levels showed inverse correlation both with the Disease Activity Score (DAS) 28 scores and C-reactive protein (CRP) levels in rheumatoid arthritis. Conclusion The highly abundant and cross-reactive, GAG-specific natural autoantibodies in serum may serve as novel disease-state markers in patients with rheumatoid arthritis.
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Affiliation(s)
- Bence György
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, Nagyvarad ter 4, H-1089, Budapest, Hungary.
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10
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Péntek M, Szekanecz Z, Czirják L, Poór G, Rojkovich B, Polgár A, Genti G, Kiss CG, Sándor Z, Májer I, Brodszky V, Gulácsi L. Impact of disease progression on health status, quality of life and costs in rheumatoid arthritis in Hungary. Orv Hetil 2008; 149:733-41. [DOI: 10.1556/oh.2008.28294] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
A rheumatoid arthritis (RA) krónikus, progresszív, szimmetrikus sokízületi gyulladás. A betegek hosszú távú gondozásához és a költséghatékonysági modellekhez alapvető ismerni és standardizáltan mérni a betegség lefolyását és annak következményeit.
Célkitűzés:
A betegségprogresszió és az egészségi állapot, életminőség és költségek kapcsolatainak vizsgálata magyarországi RA-s betegeken.
Módszer:
2004. április–augusztus között keresztmetszeti kérdőíves vizsgálatot végeztek RA-s betegek bevonásával hat fekvőbeteg-osztályos háttérrel rendelkező járóbeteg-szakambulancián. Standardizált kérdőívekkel vizsgálták a betegség progresszióját kifejező funkcionális állapotot (HAQ), az egészségi állapotot (EQ-5D), a betegségspecifikus életminőséget (RAQoL), felmérték a betegségaktivitást (DAS) és a betegséggel összefüggő költségeket, elemezték e paraméterek kapcsolatát.
Eredmények:
255 beteg adatait elemezték [átlagos életkor: 55,5 ± 12,3 év; a betegség fennállása: 9,0 ± 9,3 év; HAQ: 1,38 ± 0,76; EQ-5D: 0,46 ± 0,33; RAQoL: 16,2 ± 8,1; DAS: 5,09 ± 1,42; költség: 1 043 163 (± 844 750) Ft/beteg/év]. Szignifikáns korrelációt találtak az összes esetben (
p
< 0,01), függvénykapcsolat volt kimutatható: EQ-5D index = 1,014–0,25 × HAQ–0,041 × DAS és HAQ = 0,314 + 0,065 × RAQoL. Betegségsúlyossági csoportonként (0,5 HAQ-léptékkel) vizsgálva, az egészségi állapot átlaga rosszabbodott (EQ-5D: 0,784; 0,576; 0,504; 0,367; 0,211; 0,022), és az átlagos költség emelkedett (628 280; 888 187; 953 759; 1 291 218; 1 346 112; 1 371 674 Ft/beteg/év) a betegség előrehaladásával. Minimális klinikailag szignifikáns funkciócsökkenés (0,25 HAQ-változás) 0,0705 EQ-5D-csökkenésnek és 1,884 RAQoL-emelkedésnek felelt meg, nem súlyosan aktív (DAS < 5,1) esetekben kisebb a változás (EQ-5D: 0,05725).
Következtetések:
A betegségprogresszió és az általános egészségi állapot, életminőség és a költségek kapcsolata nem tér el jelentősen a nemzetközi eredményektől. A betegségköltségek nagysága azonban jelentősen kisebb Magyarországon, mint a fejlett országokban. A vizsgálat adatokkal szolgál a hazai egészség-gazdaságtani elemzésekhez.
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Affiliation(s)
- Márta Péntek
- 1 Pest Megyei Flór Ferenc Kórház Reumatológiai és Fizioterápiás Osztály Kistarcsa Semmelweis tér 1. 2143
| | - Zoltán Szekanecz
- 2 Debreceni Egyetem, Orvos- és Egészségtudományi Centrum Belgyógyászati Intézet, III. Belgyógyászati Klinika, Reumatológiai Tanszék Debrecen
| | - László Czirják
- 3 Pécsi Tudományegyetem Általános Orvostudományi Kar Immunológiai és Reumatológiai Klinika Pécs
| | - Gyula Poór
- 4 Országos Reumatológiai és Fizioterápiás Intézet I. Reumatológiai és Metabolikus Osteológiai Osztály Budapest
| | | | - Anna Polgár
- 6 Országos Reumatológiai és Fizioterápiás Intézet II. Reumatológiai és Klinikai Immunológiai Osztály Budapest
| | - György Genti
- 1 Pest Megyei Flór Ferenc Kórház Reumatológiai és Fizioterápiás Osztály Kistarcsa Semmelweis tér 1. 2143
| | - Csaba György Kiss
- 3 Pécsi Tudományegyetem Általános Orvostudományi Kar Immunológiai és Reumatológiai Klinika Pécs
| | - Zsuzsa Sándor
- 2 Debreceni Egyetem, Orvos- és Egészségtudományi Centrum Belgyógyászati Intézet, III. Belgyógyászati Klinika, Reumatológiai Tanszék Debrecen
| | - István Májer
- 7 Budapesti Corvinus Egyetem Egészség-gazdaságtani és Technológiaelemzési Kutatóközpont HunHTA Budapest
| | - Valentin Brodszky
- 7 Budapesti Corvinus Egyetem Egészség-gazdaságtani és Technológiaelemzési Kutatóközpont HunHTA Budapest
| | - László Gulácsi
- 7 Budapesti Corvinus Egyetem Egészség-gazdaságtani és Technológiaelemzési Kutatóközpont HunHTA Budapest
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Péntek M, Kobelt G, Czirják L, Szekanecz Z, Poór G, Rojkovich B, Polgár A, Genti G, Kiss CG, Brodszky V, Májer I, Gulácsi L. Costs of rheumatoid arthritis in Hungary. J Rheumatol 2007; 34:1437. [PMID: 17552071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
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Brozik M, Böhm U, Csiki J, Polgár A, Schmidt Z, Balogh Z, Seszták M, Ortutay J, Bálint G, Hittner G, Bálint P, Korda J, Hodinka L, Meretey K. Arthritis Res Ther 2005; 7:P155. [DOI: 10.1186/ar1676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Ortutay Z, Polgár A, Gömör B, Géher P, Lakatos T, Glant TT, Gay RE, Gay S, Pállinger E, Farkas C, Farkas E, Tóthfalusi L, Kocsis K, Falus A, Buzás EI. Synovial fluid exoglycosidases are predictors of rheumatoid arthritis and are effective in cartilage glycosaminoglycan depletion. Arthritis Rheum 2003; 48:2163-72. [PMID: 12905469 DOI: 10.1002/art.11093] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
OBJECTIVE To analyze enzymes involved in joint damage by simultaneous investigation of glycosidases and matrix metalloproteinases (MMPs) in patients with various joint diseases. METHODS Activities of glycosidases (beta-D-glucuronidase, beta-D-N-acetyl-glucosaminidase, beta-D-N-acetyl-galactosaminidase, beta-D-galactosidase, and alpha-D-mannosidase) were tested at an acidic pH as well as at the original pH of the synovial fluid (SF) samples in parallel with activities of MMP-1 and MMP-9. RESULTS Patients with rheumatoid arthritis (RA) were characterized by significantly elevated activities of beta-D-glucuronidase and beta-D-N-acetyl-glucosaminidase in SF compared with patients with osteoarthritis, seronegative spondylarthritis, or acute sports injury. To select the best predictor for distinguishing among patient groups, a stepwise logistic regression analysis was performed; the strongest association was found to be between RA and beta-D-glucuronidase/beta-D-N-acetyl-glucosaminidase activities (measured at the pH of the SF). Further, a significant correlation was observed between the activity of SF beta-D-N-acetyl-glucosaminidase and the level of rheumatoid factor. In vitro digestion of human hyaline cartilage samples revealed that the dominant glycosidases, alone or in combination with MMPs, proved to be effective in depleting glycosaminoglycans (GAGs) from cartilage. CONCLUSION These results suggest that exoglycosidases, which are present in the SF of RA patients, may contribute to the depletion of GAGs from cartilage and thereby facilitate the invasion of synovial cells and their attachment to cartilage in RA.
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Affiliation(s)
- Zsuzsanna Ortutay
- Department of Genetics, Cell and Immunobiology, Semmelweis University, 4 Nagyvárad tér, H-1089 Budapest, Hungary
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Polgár A, Brózik M, Tóth S, Holub M, Falus A. A synthetic corticosteroid, dexamethasone regulates generation of soluble form of interleukin-6 receptor of human lymphocytes, in vitro. Acta Biol Hung 2003; 53:307-15. [PMID: 12371610 DOI: 10.1556/abiol.53.2002.3.7] [Citation(s) in RCA: 3] [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: 11/19/2022]
Abstract
In contrast to most of the soluble cytokine receptor antagonists properties, the soluble IL-6 receptor (sIL-6R) occurring in various body fluids of healthy persons and patients with various diseases is an agonist. The enhancing effect is due to its ability to form complex with IL-6 and to bind to gp130 making constitutively IL-6 receptor negative cells responsive for IL-6. The generation as well as the functional role of soluble IL-6 receptor is poorly understood. Earlier, we found that the sIL-6R levels in sera of patients with systemic lupus erythematosus (SLE) and rheumatoid arthritis (RA) were higher than those of the control group measured by ELISA sandwich technology. In the present study we detected different levels of sIL-6R in the supernatants of lymphocyte cultures of healthy persons and patients with RA as well as SLE. Moreover, we found, that in vitro dexamethasone treatment stimulated generation of sIL-6R in both healthy persons and in active SLE, while it strongly suppressed production of sIL-6R in both RA groups. At mRNA level, we found that in SLE both the IL-6R mRNA encoding the membrane spanning and alternatively spliced (soluble) variants increased. Surprisingly, the strong decrease of sIL6R protein in RA was not found at mRNA level.
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Affiliation(s)
- Anna Polgár
- National Institute of Rheumatology and Physiotherapy, Budapest, Hungary
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Polgár A, Falus A, Koó E, Ujfalussy I, Seszták M, Szuts I, Konrád K, Hodinka L, Bene E, Mészáros G, Ortutay Z, Farkas E, Paksy A, Buzás EI. Elevated levels of synovial fluid antibodies reactive with the small proteoglycans biglycan and decorin in patients with rheumatoid arthritis or other joint diseases. Rheumatology (Oxford) 2003; 42:522-7. [PMID: 12649398 DOI: 10.1093/rheumatology/keg168] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.1] [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: 11/12/2022] Open
Abstract
OBJECTIVES To determine whether patients with rheumatoid arthritis (RA) express humoral immunity to the small proteoglycans biglycan and decorin and to compare the response to that of patients suffering from other joint diseases. METHODS Serum and synovial fluid IgG and IgM antibody levels were determined by enzyme-linked immunosorbent assay. Antibodies to biglycan and decorin as well as to other known and extensively investigated cartilage matrix components such as type II collagen, aggrecan and fibronectin were investigated. Patients suffering from RA, osteoarthritis (OA), psoriatic arthritis and other seronegative spondylarthropathies were included in the study. Correlation between antibody levels and clinical/laboratory parameters was determined. RESULTS Patients with RA expressed an increased humoral immunity to biglycan, while patients with seronegative spondylarthropathies displayed elevated decorin-specific synovial antibody levels compared with OA patients. CONCLUSION These results indicate a significantly higher immunity to small proteoglycans in RA and seronegative spondylarthropathies than in OA suggesting a possible involvement in the pathogenesis of inflammatory rheumatic diseases.
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Affiliation(s)
- A Polgár
- National Institute of Rheumatology and Physiotherapy, Budapest, Hungary
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Polgár A, Kuroli G. Interaction between nutrient supplies and aphid numbers on potato (2001-2002). Commun Agric Appl Biol Sci 2003; 68:255-63. [PMID: 15149116] [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: 04/29/2023]
Abstract
We set up our experiment on 11 potato varieties with 4 treatments and 4 replications in Hungary in 2001 and 2002. The aim of the experiment was to investigate the interaction between the nutrient supplies of potato and the change in the numbers of aphids feeding on the potato plant. In our experiment we sorted 4 nutrient levels according to the recommendations of soil analyses and variety holders. During the growing period we counted the numbers of aphids feeding on the potato leaves every week and controlled the virus infestation with ELISA-method after harvesting. Using the data we concluded that there is an interaction between the nutrient supplies of the potato plant and the numbers of aphids feeding on the leaves. The numbers of aphids on the plots with good nutrient supplies exceeded the numbers of aphids counted on the control plots. In 2001 and 2002 we counted 1150 and 1205 aphids per 100 plants on plots with nutrient supplies in the peak time of swarming compared to the control plot with numbers of 799 and 978. Beside nutrient supplies weather conditions influenced the numbers of aphids, too. Different temperature and rainfall conditions in both years affected the intense and progress of swarming. This can be the reason for the appearance of the first aphids (in the last week of April in 2001 and in the first week of May in 2002) and the time of swarming (15-18 June in 2001 and 28-31 May in 2002). Summer heat and hot days lowered the numbers of aphids. In 2002 following the heat in June and July the population escalated. After harvesting we confirmed our hypothesis from the tuber samples by ELISA-method: The virus infestation was higher on plots with intensive growing practice than the virus infestation on the control plots. In 2001 the rate of PLVRV infestation on Agria variety of the control plot yielded 18.7%. At the time of the 3rd treatment it increased to 37.2%. In 2002 the control had an infestation rate of 12.6% and 40.2% at the time of the 3rd treatment. In 2001 the rates of PVY infestation were 15.2% and 23.4% respectively and in 2002 they were 14.8% and 18.2% respectively. As the interaction between nutrient supplies, changes in the numbers of aphids and the virus infestation are not yet well known, further experiments are required.
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Affiliation(s)
- A Polgár
- University of West Hungary Faculty of Agricultural- and Food Sciences, H-9200 Mosonmagyaróvár, PO Box 90, Hungary
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Holub MC, Hegyesi H, Igaz P, Polgár A, Toth S, Falus A. Soluble interleukin-6 receptor enhanced by oncostatin M induces major changes in gene expression profile of human hepatoma cells. Immunol Lett 2002; 82:79-84. [PMID: 12008038 DOI: 10.1016/s0165-2478(02)00022-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Interleukin-6 (IL-6) binds to a receptor complex consisting of an 80 kDa binding unit (IL-6R) and gp130 responsible for signal transduction. Due to alternative splicing and/or proteolytic digestion IL-6R occurs in soluble form (sIL-6R), as well. Soluble IL-6R is able to bind to gp130 expressing on nucleated cells, thus sIL-6R makes most cells responsive to IL-6. In this study we found that oncostatin M (OSM), an other gp130 dependent cytokine with proliferation inhibitory potential, increases the expression of both membrane-bound IL-6R and sIL-6R generated by alternative splicing in hepatic and mammary carcinoma cell lines. Furthermore, we studied the functional relevance of the presence and binding of soluble IL-6R to HepG2 cells. Using a cDNA expression array, mRNA levels of about 580 human genes were tested by differential display analysis. Our findings suggest, that elevation of surface density of IL-6R by attachment of sIL-6R induces major modulation in gene expression profile of the hepatoma cells. Soluble IL-6R alone has minor effect, it rather decreases expression of some genes, while incubation with IL-6 and sIL-6R together induces major changes in the mRNA pattern of HepG2 cells. These data strongly suggest that presence and binding of soluble cytokine receptors are important elements of inter-cytokine cross talk and affects actual gene expression profile of responding cells.
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Affiliation(s)
- Marianna Csilla Holub
- Department of Genetics, Cell- and Immunobiology, Semmelweis University of Medicine, Budapest, Hungary
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Polgár A, Zechmeister L. Action of Cold Concentrated Hydriodic Acid on Carotenes: Structure and cis-trans-Isomerization of Some Reaction Products. J Am Chem Soc 2002. [DOI: 10.1021/ja01248a026] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Zechmeister L, LeRosen AL, Schroeder WA, Polgár A, Pauling L. Spectral Characteristics and Configuration of Some Stereoisomeric Carotenoids Including Prolycopene and Pro-γ-carotene. J Am Chem Soc 2002. [DOI: 10.1021/ja01250a039] [Citation(s) in RCA: 133] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Zechmeister L, Polgár A. cis—trans Isomerization and cis-Peak Effect in the α-Carotene Set and in Some Other Stereoisomeric Sets. J Am Chem Soc 2002. [DOI: 10.1021/ja01229a039] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Polgár A, Kuroli G, Orosz A. Individual number change of Empoasca spp. cicadas species in potato. Meded Rijksuniv Gent Fak Landbouwkd Toegep Biol Wet 2002; 67:547-56. [PMID: 12696421] [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: 04/20/2023]
Abstract
We investigated the individual number change of Empoasca spp. cicadas species that are living in potatoes for 3 years. We applied the "100 plants" method for the determination for the individual number once per week. Based on the data determined that the settling of adult begins on the last days of May, and valid presence will be followed till the end of the breeding-season. The individual number was gradually increased during the settling, and reached the peak in 1990 on 23 July, in 2000 on 6 August and in 2001 on 22 July. We determined the individuals gathered during the collection. In the population of Empoasca spp. The E. solani Curtis and the E. decipiens Paoli played the dominant role. The E. vitis Göthe was also present with insignificant individual number. Beside the adults many larvae and nymphs were living on the potato which means that the Empoasca spp. Can reproduce also on the potato. At the time of peak individual number in 1999 1876 larvae, 344 nymphs and 400 adults were present on 100 plants, in 2000 (according to the previous order) 3340, 580, 1280, and in 2001 there were 954, 786 and 285. The rainfall in Hungary was disadvantageous in the investigated period, especially the year 2000. During the rain-free period the temperature was high and the relative humidity of the air was low. However, we could state that the increase of the cicada individual number was not restrained by the heat (30-35 degrees C) days. The decrease was in connection with the ageing of the plant stock.
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Affiliation(s)
- A Polgár
- University of West Hungary, Faculty of Agricultural and Food, H-9200 Mosonmagyaróvár, P.O. Box 90., Hungary
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Polgár A, Brózik M, Tóth S, Holub M, Hegyi K, Kádár A, Hodinka L, Falus A. Soluble interleukin-6 receptor in plasma and in lymphocyte culture supernatants of healthy individuals and patients with systemic lupus erythematosus and rheumatoid arthritis. Med Sci Monit 2000; 6:13-8. [PMID: 11208277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023] Open
Abstract
The soluble IL-6 receptor (sIL-6R) occurring in various body fluids of healthy persons and patients with various diseases is an agonist since its complex with IL-6 binds to gp130 making IL-6 receptor negative cells responsive for IL-6. The generation as well as the functional role of soluble IL-6 receptor is poorly understood. We measured the sIL-6R levels by ELISA sandwich technology in sera and in supernatants of lymphocyte cultures without and after incubations with dexamethasone. Our results indicate, that the sIL-6R levels in sera of patients with inactive systemic lupus erythematosus (SLE) and active rheumatoid arthritis (RA) were higher than those of the control group, active SLE and inactive RA. In vitro dexamethasone treatment stimulated generation of sIL-6R in both healthy persons and in active SLE, however it strongly suppressed sIL-6R in both RA groups. At mRNA level, we found that in SLE both the mRNA coding the cell-bound and an alternatively spliced variant corresponding to soluble IL-6R transcript increases, however the strong decrease of sIL6R protein in RA was not found at mRNA level.
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Affiliation(s)
- A Polgár
- National Institute of Rheumatology and Physiotherapy, Budapest, Hungary
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Holub MC, Szalai C, Polgár A, Tóth S, Falus A. Generation of 'truncated' interleukin-6 receptor (IL-6R) mRNA by alternative splicing; a possible source of soluble IL-6R. Immunol Lett 1999; 68:121-4. [PMID: 10397166 DOI: 10.1016/s0165-2478(99)00040-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Receptors for interleukin-6 (IL-6) occur in body fluids in soluble form, as well. This is an approx. 50 kDa protein with the ability to bind IL-6. The soluble IL-6 receptor (sIL-6R)/IL-6 complex can attach to membrane anchored gp130, a molecule associated with the signal transduction induced by IL-6 and by other related cytokines. Earlier we described the appearance of sIL-6R in various body fluids of autoimmune patients. In this study using reverse transcriptase polymerase chain reaction (RT-PCR) we isolated and characterised a truncated form of amplified cDNA reverse-transcribed from IL-6 receptor mRNA both from human hepatoma cell line HepG2 and mononuclear cells from inflammatory bowel disease (IBD) patients. Using digestion by Pvu II restriction endonuclease and direct nucleotide sequencing we conclude that alternative splicing is likely involved in generation of sIL-6R. Our further experiments suggest that IL-6 and recombinant sIL-6R themselves do not influence the alternative splicing of IL-6 receptor gene.
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Affiliation(s)
- M C Holub
- Department of Genetics, Cell- and Immunobiology, Semmelweis University of Medicine, Budapest, Hungary
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Varga B, Veszelovszky I, Papp JN, Polgár A. [Disappearance of physiological glycosuria as a significant sign of bacteriuria]. Orv Hetil 1973; 114:1115-6. [PMID: 4573139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Varga B, Veszelovszky I, Papp-Juhász N, Polgár A. [Subnormal urinary glucose as a determination technic for genuine significant bacteriuria]. Z Urol Nephrol 1972; 65:927-32. [PMID: 4579602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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