1
|
Sándor N, Schneider AE, Matola AT, Barbai VH, Bencze D, Hammad HH, Papp A, Kövesdi D, Uzonyi B, Józsi M. The human factor H protein family - an update. Front Immunol 2024; 15:1135490. [PMID: 38410512 PMCID: PMC10894998 DOI: 10.3389/fimmu.2024.1135490] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Accepted: 01/08/2024] [Indexed: 02/28/2024] Open
Abstract
Complement is an ancient and complex network of the immune system and, as such, it plays vital physiological roles, but it is also involved in numerous pathological processes. The proper regulation of the complement system is important to allow its sufficient and targeted activity without deleterious side-effects. Factor H is a major complement regulator, and together with its splice variant factor H-like protein 1 and the five human factor H-related (FHR) proteins, they have been linked to various diseases. The role of factor H in inhibiting complement activation is well studied, but the function of the FHRs is less characterized. Current evidence supports the main role of the FHRs as enhancers of complement activation and opsonization, i.e., counter-balancing the inhibitory effect of factor H. FHRs emerge as soluble pattern recognition molecules and positive regulators of the complement system. In addition, factor H and some of the FHR proteins were shown to modulate the activity of immune cells, a non-canonical function outside the complement cascade. Recent efforts have intensified to study factor H and the FHRs and develop new tools for the distinction, quantification and functional characterization of members of this protein family. Here, we provide an update and overview on the versatile roles of factor H family proteins, what we know about their biological functions in healthy conditions and in diseases.
Collapse
Affiliation(s)
- Noémi Sándor
- Department of Immunology, ELTE Eötvös Loránd University, Budapest, Hungary
- HUN-REN-ELTE Complement Research Group, Hungarian Research Network, Budapest, Hungary
| | | | | | - Veronika H. Barbai
- Department of Immunology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Dániel Bencze
- Department of Immunology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Hani Hashim Hammad
- Department of Immunology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Alexandra Papp
- Department of Immunology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Dorottya Kövesdi
- Department of Immunology, ELTE Eötvös Loránd University, Budapest, Hungary
- HUN-REN-ELTE Complement Research Group, Hungarian Research Network, Budapest, Hungary
| | - Barbara Uzonyi
- Department of Immunology, ELTE Eötvös Loránd University, Budapest, Hungary
- HUN-REN-ELTE Complement Research Group, Hungarian Research Network, Budapest, Hungary
| | - Mihály Józsi
- Department of Immunology, ELTE Eötvös Loránd University, Budapest, Hungary
- HUN-REN-ELTE Complement Research Group, Hungarian Research Network, Budapest, Hungary
| |
Collapse
|
2
|
Rogers AD, Amaral A, Cartotto R, El Khatib A, Fowler R, Logsetty S, Malic C, Mason S, Nickerson D, Papp A, Rasmussen J, Wallace D. Choosing wisely in burn care. Burns 2022; 48:1097-1103. [PMID: 34563420 DOI: 10.1016/j.burns.2021.09.007] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 08/15/2021] [Accepted: 09/13/2021] [Indexed: 12/15/2022]
Abstract
BACKGROUND The Choosing Wisely Campaign was launched in 2012 and has been applied to a broad spectrum of disciplines in almost thirty countries, with the objective of reducing unnecessary or potentially harmful investigations and procedures, thus limiting costs and improving outcomes. In Canada, patients with burn injuries are usually initially assessed by primary care and emergency providers, while plastic or general surgeons provide ongoing management. We sought to develop a series of Choosing Wisely statements for burn care to guide these practitioners and inform suitable, cost-effective investigations and treatment choices. METHODS The Choosing Wisely Canada list for Burns was developed by members of the Canadian Special Interest Group of the American Burn Association. Eleven recommendations were generated from an initial list of 29 statements using a modified Delphi process and SurveyMonkey™. RESULTS Recommendations included statements on avoidance of prophylactic antibiotics, restriction of blood products, use of adjunctive analgesic medications, monitoring and titration of opioid analgesics, and minimizing 'routine' bloodwork, microbiology or radiological investigations. CONCLUSIONS The Choosing Wisely recommendations aim to encourage greater discussion between those involved in burn care, other health care professionals, and their patients, with a view to reduce the cost and adverse effects associated with unnecessary therapeutic and diagnostic procedures, while still maintaining high standards of evidence-based burn care.
Collapse
Affiliation(s)
- A D Rogers
- Ross Tilley Burn Centre, Sunnybrook Health Sciences Centre, Department of Surgery, University of Toronto, Toronto, Ontario, Canada.
| | - A Amaral
- Department of Critical Care Medicine, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - R Cartotto
- Ross Tilley Burn Centre, Sunnybrook Health Sciences Centre, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | - A El Khatib
- Ross Tilley Burn Centre, Sunnybrook Health Sciences Centre, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | - R Fowler
- Department of Critical Care Medicine, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - S Logsetty
- Manitoba Firefighters Burn Unit, Department of Surgery, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
| | - C Malic
- Division of Plastic and Reconstructive Surgery, Children's Hospital of Eastern Ontario, University of Ottawa, Ottawa, Ontario, Canada
| | - S Mason
- Ross Tilley Burn Centre, Sunnybrook Health Sciences Centre, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | - D Nickerson
- Calgary Firefighters' Burn Treatment Centre, Foothills Medical Centre, Department of Surgery, University of Calgary, Alberta, Canada
| | - A Papp
- BC Professional Firefighters' Burn Unit, Vancouver General Hospital, Department of Surgery, University of British Columbia, Vancouver, British Columbia, Canada
| | - J Rasmussen
- Queen Elizabeth II Health Sciences Centre Burn Unit, Dalhousie University, Halifax, Nova Scotia, Canada
| | - D Wallace
- Ross Tilley Burn Centre, Sunnybrook Health Sciences Centre, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| |
Collapse
|
3
|
Papp A, Papp K, Uzonyi B, Cserhalmi M, Csincsi ÁI, Szabó Z, Bánlaki Z, Ermert D, Prohászka Z, Erdei A, Ferreira VP, Blom AM, Józsi M. Complement Factor H-Related Proteins FHR1 and FHR5 Interact With Extracellular Matrix Ligands, Reduce Factor H Regulatory Activity and Enhance Complement Activation. Front Immunol 2022; 13:845953. [PMID: 35392081 PMCID: PMC8980529 DOI: 10.3389/fimmu.2022.845953] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Accepted: 02/17/2022] [Indexed: 11/13/2022] Open
Abstract
Components of the extracellular matrix (ECM), when exposed to body fluids may promote local complement activation and inflammation. Pathologic complement activation at the glomerular basement membrane and at the Bruch's membrane is implicated in renal and eye diseases, respectively. Binding of soluble complement inhibitors to the ECM, including factor H (FH), is important to prevent excessive complement activation. Since the FH-related (FHR) proteins FHR1 and FHR5 are also implicated in these diseases, our aim was to study whether these FHRs can also bind to ECM components and affect local FH activity and complement activation. Both FH and the FHRs showed variable binding to ECM components. We identified laminin, fibromodulin, osteoadherin and PRELP as ligands of FHR1 and FHR5, and found that FHR1 bound to these ECM components through its C-terminal complement control protein (CCP) domains 4-5, whereas FHR5 bound via its middle region, CCPs 3-7. Aggrecan, biglycan and decorin did not bind FH, FHR1 and FHR5. FHR5 also bound to immobilized C3b, a model of surface-deposited C3b, via CCPs 3-7. By contrast, soluble C3, C3(H2O), and the C3 fragments C3b, iC3b and C3d bound to CCPs 8-9 of FHR5. Properdin, which was previously described to bind via CCPs 1-2 to FHR5, did not bind in its physiologically occurring serum forms in our assays. FHR1 and FHR5 inhibited the binding of FH to the identified ECM proteins in a dose-dependent manner, which resulted in reduced FH cofactor activity. Moreover, both FHR1 and FHR5 enhanced alternative complement pathway activation on immobilized ECM proteins when exposed to human serum, resulting in the increased deposition of C3-fragments, factor B and C5b-9. Thus, our results identify novel ECM ligands of FH family proteins and indicate that FHR1 and FHR5 are competitive inhibitors of FH on ECM and, when bound to these ligands, they may enhance local complement activation and promote inflammation under pathological conditions.
Collapse
Affiliation(s)
- Alexandra Papp
- MTA-ELTE Complement Research Group, Eötvös Loránd Research Network (ELKH), Department of Immunology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Krisztián Papp
- MTA-ELTE Immunology Research Group, Eötvös Loránd Research Network (ELKH), Department of Immunology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Barbara Uzonyi
- MTA-ELTE Complement Research Group, Eötvös Loránd Research Network (ELKH), Department of Immunology, ELTE Eötvös Loránd University, Budapest, Hungary.,MTA-ELTE Immunology Research Group, Eötvös Loránd Research Network (ELKH), Department of Immunology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Marcell Cserhalmi
- MTA-ELTE Complement Research Group, Eötvös Loránd Research Network (ELKH), Department of Immunology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Ádám I Csincsi
- MTA-ELTE Complement Research Group, Eötvös Loránd Research Network (ELKH), Department of Immunology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Zsóka Szabó
- MTA-ELTE Complement Research Group, Eötvös Loránd Research Network (ELKH), Department of Immunology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Zsófia Bánlaki
- MTA-ELTE Complement Research Group, Eötvös Loránd Research Network (ELKH), Department of Immunology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - David Ermert
- Department of Translational Medicine, Lund University, Malmo, Sweden
| | - Zoltán Prohászka
- Department of Internal Medicine and Haematology, Semmelweis University, Budapest, Hungary.,Research Group for Immunology and Haematology, Semmelweis University-Eötvös Loránd Research Network (Office for Supported Research Groups), Budapest, Hungary
| | - Anna Erdei
- MTA-ELTE Immunology Research Group, Eötvös Loránd Research Network (ELKH), Department of Immunology, ELTE Eötvös Loránd University, Budapest, Hungary.,Department of Immunology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Viviana P Ferreira
- Department of Medical Microbiology and Immunology, University of Toledo College of Medicine, Toledo, OH, United States
| | - Anna M Blom
- Department of Translational Medicine, Lund University, Malmo, Sweden
| | - Mihály Józsi
- MTA-ELTE Complement Research Group, Eötvös Loránd Research Network (ELKH), Department of Immunology, ELTE Eötvös Loránd University, Budapest, Hungary.,Department of Immunology, ELTE Eötvös Loránd University, Budapest, Hungary
| |
Collapse
|
4
|
Bulyáki É, Kun J, Molnár T, Papp A, Micsonai A, Vadászi H, Márialigeti B, Kovács AI, Gellén G, Yamaguchi K, Lin Y, So M, Józsi M, Schlosser G, Lee YH, Liliom K, Goto Y, Kardos J. Pathogenic D76N Variant of β 2-Microglobulin: Synergy of Diverse Effects in Both the Native and Amyloid States. Biology (Basel) 2021; 10:biology10111197. [PMID: 34827190 PMCID: PMC8614874 DOI: 10.3390/biology10111197] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 11/11/2021] [Accepted: 11/11/2021] [Indexed: 01/13/2023]
Abstract
Simple Summary Elevated β2-microglobulin (β2m) serum levels cause serious complications in patients on long-term kidney dialysis by depositing in the form of amyloid fibrils in the osteoarticular system. Recently, a hereditary systemic amyloidosis was discovered, caused by a naturally occurring D76N β2m mutant exhibiting normal serum levels and a distinct, visceral deposition pattern. D76N β2m showed a structure remarkably similar to the wild-type (WT) protein, albeit with decreased thermodynamic stability and increased amyloidogenicity. Despite the extensive research, the molecular bases of the aberrant aggregation of β2m in vivo remains elusive. Here, using a variety of biophysical techniques, we investigated the role of the pathogenic D76N mutation in the amyloid formation of β2m by point mutations affecting the stabilizing ion-pairs of β2m. We found that, relative to WT β2m, the exceptional amyloidogenicity of the pathogenic D76N β2m variant is realized by the synergy of diverse effects of destabilized native structure, higher sensitivity to negatively charged amphiphilic molecules and polyphosphate, more effective fibril nucleation, higher conformational stability of fibrils, and elevated affinity for extracellular matrix proteins. Understanding the underlying molecular mechanisms might help to find target points for effective treatments against diseases associated with the deleterious aggregation of proteins. Abstract β2-microglobulin (β2m), the light chain of the MHC-I complex, is associated with dialysis-related amyloidosis (DRA). Recently, a hereditary systemic amyloidosis was discovered, caused by a naturally occurring D76N β2m variant, which showed a structure remarkably similar to the wild-type (WT) protein, albeit with decreased thermodynamic stability and increased amyloidogenicity. Here, we investigated the role of the D76N mutation in the amyloid formation of β2m by point mutations affecting the Asp76-Lys41 ion-pair of WT β2m and the charge cluster on Asp38. Using a variety of biophysical techniques, we investigated the conformational stability and partial unfolding of the native state of the variants, as well as their amyloidogenic propensity and the stability of amyloid fibrils under various conditions. Furthermore, we studied the intermolecular interactions of WT and mutant proteins with various binding partners that might have in vivo relevance. We found that, relative to WT β2m, the exceptional amyloidogenicity of the pathogenic D76N β2m variant is realized by the deleterious synergy of diverse effects of destabilized native structure, higher sensitivity to negatively charged amphiphilic molecules (e.g., lipids) and polyphosphate, more effective fibril nucleation, higher conformational stability of fibrils, and elevated affinity for extracellular components, including extracellular matrix proteins.
Collapse
Affiliation(s)
- Éva Bulyáki
- ELTE NAP Neuroimmunology Research Group, Department of Biochemistry, Institute of Biology, ELTE Eötvös Loránd University, 1117 Budapest, Hungary; (É.B.); (J.K.); (A.M.); (H.V.)
| | - Judit Kun
- ELTE NAP Neuroimmunology Research Group, Department of Biochemistry, Institute of Biology, ELTE Eötvös Loránd University, 1117 Budapest, Hungary; (É.B.); (J.K.); (A.M.); (H.V.)
| | - Tamás Molnár
- Department of Biochemistry, Institute of Biology, ELTE Eötvös Loránd University, 1117 Budapest, Hungary; (T.M.); (B.M.); (A.I.K.)
| | - Alexandra Papp
- Complement Research Group, Department of Immunology, ELTE Eötvös Loránd University, 1117 Budapest, Hungary; (A.P.); (M.J.)
| | - András Micsonai
- ELTE NAP Neuroimmunology Research Group, Department of Biochemistry, Institute of Biology, ELTE Eötvös Loránd University, 1117 Budapest, Hungary; (É.B.); (J.K.); (A.M.); (H.V.)
| | - Henrietta Vadászi
- ELTE NAP Neuroimmunology Research Group, Department of Biochemistry, Institute of Biology, ELTE Eötvös Loránd University, 1117 Budapest, Hungary; (É.B.); (J.K.); (A.M.); (H.V.)
| | - Borbála Márialigeti
- Department of Biochemistry, Institute of Biology, ELTE Eötvös Loránd University, 1117 Budapest, Hungary; (T.M.); (B.M.); (A.I.K.)
| | - Attila István Kovács
- Department of Biochemistry, Institute of Biology, ELTE Eötvös Loránd University, 1117 Budapest, Hungary; (T.M.); (B.M.); (A.I.K.)
| | - Gabriella Gellén
- Department of Analytical Chemistry, Institute of Chemistry, ELTE Eötvös Loránd University, 1117 Budapest, Hungary; (G.G.); (G.S.)
| | - Keiichi Yamaguchi
- Global Center for Medical Engineering and Informatics, Osaka University, Osaka 565-0871, Japan; (K.Y.); (Y.G.)
| | - Yuxi Lin
- Research Center of Bioconvergence Analysis, Korea Basic Science Institute (KBSI), Ochang 28119, Korea; (Y.L.); (Y.-H.L.)
| | - Masatomo So
- Institute for Protein Research, Osaka University, Osaka 565-0871, Japan; or
| | - Mihály Józsi
- Complement Research Group, Department of Immunology, ELTE Eötvös Loránd University, 1117 Budapest, Hungary; (A.P.); (M.J.)
- MTA-ELTE Complement Research Group, Eötvös Loránd Research Network (ELKH), Department of Immunology, ELTE Eötvös Loránd University, 1117 Budapest, Hungary
| | - Gitta Schlosser
- Department of Analytical Chemistry, Institute of Chemistry, ELTE Eötvös Loránd University, 1117 Budapest, Hungary; (G.G.); (G.S.)
| | - Young-Ho Lee
- Research Center of Bioconvergence Analysis, Korea Basic Science Institute (KBSI), Ochang 28119, Korea; (Y.L.); (Y.-H.L.)
- Bio-Analytical Science, University of Science and Technology (UST), Daejeon 34113, Korea
- Graduate School of Analytical Science and Technology (GRAST), Chungnam National University (CNU), Daejeon 34134, Korea
- Research Headquarters, Korea Brain Research Institute (KBRI), Daegu 41068, Korea
| | - Károly Liliom
- Department of Biophysics and Radiation Biology, Faculty of Medicine, Semmelweis University, 1094 Budapest, Hungary;
| | - Yuji Goto
- Global Center for Medical Engineering and Informatics, Osaka University, Osaka 565-0871, Japan; (K.Y.); (Y.G.)
- Institute for Protein Research, Osaka University, Osaka 565-0871, Japan; or
| | - József Kardos
- ELTE NAP Neuroimmunology Research Group, Department of Biochemistry, Institute of Biology, ELTE Eötvös Loránd University, 1117 Budapest, Hungary; (É.B.); (J.K.); (A.M.); (H.V.)
- Correspondence:
| |
Collapse
|
5
|
Aloudat M, Papp A, Magyar N, Sarkadi LS, Lugasi A. Nutritional Value of Traditional and Modern Meals: Jordan and Hungary. AAlim 2020. [DOI: 10.1556/066.2020.49.4.15] [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] [Indexed: 11/19/2022]
Abstract
The purpose of this study was to compare the energy content and macronutrients of forty main popular traditional and modern meals in both Jordan and Hungary with the national and international recommendations. The calculation of energy content and macronutrients were done on traditional and modern recipes by two different softwares (ESHA and NutriComp). Neither Jordanian nor Hungarian foods met the recommended energy content (35% of daily energy intake, 8400 kJ for energy intake). The recipes of both nations are characterised by higher protein, fat, and salt contents than WHO recommendation, a lower fibre content, and sugar content within the recommended limits. The fat energy ratio and saturated fatty acid content of Hungarian recipes are significantly higher than WHO recommendation. In general, Jordanian meals were more likely to meet the inclusion criteria. In conclusion, neither Jordanian nor Hungarian traditional and popular meals meet the international nutritional recommendations for a healthy diet, however, the composition of the real dishes may differ significantly from the recipes depending on the available ingredients and chosen kitchen technology.
Collapse
Affiliation(s)
- M. Aloudat
- aDoctoral School of Food Science, Faculty of Food Science, Szent István University, H-1118 Budapest, Villányi út 29–43. Hungary
| | - A. Papp
- bDepartment of Hospitality, Faculty of Commerce, Hospitality and Tourism, Budapest Business School, H-1054 Budapest, Alkotmány utca 9–11. Hungary
- cDoctoral School of Nutrition and Food Science, University of Debrecen, H-4032 Debrecen, Egyetem tér, 1. Hungary
| | - N. Magyar
- dDepartment of Methodology for Business Analysis, Faculty of Commerce, Hospitality and Tourism, Budapest Business School, H-1054 Budapest, Alkotmány út 9–11. Hungary
| | - L. Simon Sarkadi
- aDoctoral School of Food Science, Faculty of Food Science, Szent István University, H-1118 Budapest, Villányi út 29–43. Hungary
- eDepartment of Food Science and Nutrition, Faculty of Food Science, Szent István University, H-1118 Budapest, Somlói út 14–16. Hungary
| | - A. Lugasi
- bDepartment of Hospitality, Faculty of Commerce, Hospitality and Tourism, Budapest Business School, H-1054 Budapest, Alkotmány utca 9–11. Hungary
| |
Collapse
|
6
|
Papp A, Horváth A, Fabó D, Kamondi A, Szűcs A. Sleep changes and epileptiform discharges in Parkinson's and Alzheimer's disease: 24-hour EEG study. Parkinsonism Relat Disord 2020. [DOI: 10.1016/j.parkreldis.2020.06.202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
7
|
Kárpáti É, Papp A, Schneider AE, Hajnal D, Cserhalmi M, Csincsi ÁI, Uzonyi B, Józsi M. Interaction of the Factor H Family Proteins FHR-1 and FHR-5 With DNA and Dead Cells: Implications for the Regulation of Complement Activation and Opsonization. Front Immunol 2020; 11:1297. [PMID: 32765490 PMCID: PMC7378360 DOI: 10.3389/fimmu.2020.01297] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 05/22/2020] [Indexed: 12/14/2022] Open
Abstract
Complement plays an essential role in the opsonophagocytic clearance of apoptotic/necrotic cells. Dysregulation of this process may lead to inflammatory and autoimmune diseases. Factor H (FH), a major soluble complement inhibitor, binds to dead cells and inhibits excessive complement activation on their surface, preventing lysis, and the release of intracellular material, including DNA. The FH-related (FHR) proteins share common ligands with FH, due to their homology with this complement regulator, but they lack the domains that mediate the complement inhibitory activity of FH. Because their roles in complement regulation is controversial and incompletely understood, we studied the interaction of FHR-1 and FHR-5 with DNA and dead cells and investigated whether they influence the regulatory role of FH and the complement activation on DNA and dead cells. FH, FHR-1, and FHR-5 bound to both plasmid DNA and human genomic DNA, where both FHR proteins inhibited FH-DNA interaction. The FH cofactor activity was inhibited by FHR-1 and FHR-5 due to the reduced binding of FH to DNA in the presence of the FHRs. Both FHRs caused increased complement activation on DNA. FHR-1 and FHR-5 bound to late apoptotic and necrotic cells and recruited monomeric C-reactive protein and pentraxin 3, and vice versa. Interactions of the FHRs with pentraxins resulted in enhanced activation of both the classical and the alternative complement pathways on dead cells when exposed to human serum. Altogether, our results demonstrate that FHR-1 and FHR-5 are competitive inhibitors of FH on DNA; moreover, FHR-pentraxin interactions promote opsonization of dead cells.
Collapse
Affiliation(s)
- Éva Kárpáti
- Department of Immunology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Alexandra Papp
- Department of Immunology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Andrea E Schneider
- Department of Immunology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Dávid Hajnal
- Department of Immunology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Marcell Cserhalmi
- Department of Immunology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Ádám I Csincsi
- Department of Immunology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Barbara Uzonyi
- Department of Immunology, ELTE Eötvös Loránd University, Budapest, Hungary.,MTA-ELTE Complement Research Group, Department of Immunology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Mihály Józsi
- Department of Immunology, ELTE Eötvös Loránd University, Budapest, Hungary.,MTA-ELTE Complement Research Group, Department of Immunology, ELTE Eötvös Loránd University, Budapest, Hungary
| |
Collapse
|
8
|
Reed D, Papp A, Brundridge W, Mehta A, Santamaria J, Valentin F, Davies B. Evisceration Versus Enucleation Following Ocular Trauma, a Retrospective Analysis at a Level One Trauma Center. Mil Med 2019; 185:409-412. [DOI: 10.1093/milmed/usz278] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction
Penetrating and perforating ocular trauma is often devastating and may lead to complete visual loss in the traumatized eye and subsequent compromise of the fellow eye. Enucleation is commonly utilized for management of a non-salvageable eye following penetrating and perforating ocular injuries. Recently, the use of evisceration for non-salvageable traumatized eyes has increased. As a technically easier alternative, evisceration offers several advantages to the ocular trauma surgeon to include faster surgical times, better cosmesis and motility, and improved patient outcomes. Debate still persists concerning whether or not evisceration is a viable option in the surgical management of a non-salvageable eye following ocular trauma given the theoretical increased risk of sympathetic ophthalmia and technical difficulty in construction of the scleral shell with extensive and complex corneoscleral lacerations. A retrospective analysis at a level 1 trauma center was performed to evaluate the practicality of evisceration in ocular trauma.
Materials and Methods
Eyes that underwent evisceration or enucleation following ocular trauma at San Antonio Military Medical Center, a level 1 trauma center, between 01 January 2014 and 30 December 2016 were examined. Factors evaluated include mechanism of injury, defect complexity, ocular trauma score, and time from injury to surgical intervention. Surgical outcomes were assessed.
Results
In total, 29 eyes were examined, 15 having undergone evisceration and 14 enucleation. The average size of the scleral defect before evisceration was 20 mm in length, and 23 mm before enucleation. The mechanism of injury and characterization of the defects among the two groups were relatively similar and described. Overall comparison of the two study groups in terms of surgical outcomes and complications was also relatively similar, as demonstrated. No cases of postoperative persistent pain, sympathetic ophthalmia, infection, or hematoma were identified for either group.
Conclusions
The postoperative outcomes demonstrated for the evisceration group are comparable to enucleation, which is consistent with the recent literature. Defect size and complexity did not affect surgical construction of the scleral shell during evisceration. If consistently proven to be a safe and viable alternative to enucleation, evisceration can offer shorter surgical times and better cosmesis for patients. More research into the long-term complication rates and more cases of evisceration for use following ocular trauma should be assessed. Still, this analysis demonstrates that evisceration is a viable surgical alternative and perhaps superior to enucleation for the management of a non-salvageable eye following extensive ocular trauma in many cases.
Collapse
Affiliation(s)
- Donovan Reed
- Department of Ophthalmology, Brooke Army Medical Center, 3551 Roger Brook Dr, San Antonio, TX 78234
- Department of Surgery, Uniformed Services University of the Health Science, 4301 Jones Bridge Rd, Bethesda, MD 20814
| | - Alexandra Papp
- McChord Airman’s Clinic, Madigan Army Medical Center, 9040A Jackson Ave, Joint Base Lewis McChord, Tacoma, WA 98431
| | - Wesley Brundridge
- Department of Ophthalmology, Brooke Army Medical Center, 3551 Roger Brook Dr, San Antonio, TX 78234
| | - Aditya Mehta
- Department of Ophthalmology, Brooke Army Medical Center, 3551 Roger Brook Dr, San Antonio, TX 78234
| | - Joseph Santamaria
- Department of Ophthalmology, Brooke Army Medical Center, 3551 Roger Brook Dr, San Antonio, TX 78234
| | - Frank Valentin
- Department of Ophthalmology, Brooke Army Medical Center, 3551 Roger Brook Dr, San Antonio, TX 78234
| | - Brett Davies
- Department of Ophthalmology, Brooke Army Medical Center, 3551 Roger Brook Dr, San Antonio, TX 78234
- Department of Surgery, Uniformed Services University of the Health Science, 4301 Jones Bridge Rd, Bethesda, MD 20814
| |
Collapse
|
9
|
Cherukupalli A, Duan N, Papp A. A third of referrals are unnecessary: Critical review of burn outpatient clinic data. Burns 2019; 45:805-817. [PMID: 31031020 DOI: 10.1016/j.burns.2019.03.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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: 12/09/2018] [Revised: 03/19/2019] [Accepted: 03/26/2019] [Indexed: 12/01/2022]
Abstract
OBJECTIVES The purpose of this study was to establish patterns in types of burns referred to the Outpatient Clinic (OP) at Vancouver General Hospital (VGH). METHODS A 2-year retrospective chart review was conducted of patients presenting to the OP Clinic from June 1, 2016 - June 1, 2018. Data collected included: patient demographics, depth of burn, Total Body Surface Area (TBSA), anatomical location of burn, geographical location of referral, and operative versus non-operative management. RESULTS The OP Clinic served 470 patients for burn injuries with a total of 1852 visits. Of these, 20% were follow-up visits post-admission, and 73.6% were primary referrals from the emergency department (ED) or elsewhere. The vast majority (69.6%) of burns were less than 5% TBSA. Half involved the hands (50.9%), and half were superficial dermal in depth (45.1%). A third of patients attended only one appointment with the OP Clinic before discharge and 15% did not receive any treatment. CONCLUSIONS The results of our study demonstrate gaps in current provincial referral guidelines leading to a significant number of "unnecessary referrals." Further research could correlate the results to current provincial referral guidelines to estimate their current efficacy in practical use.
Collapse
Affiliation(s)
- A Cherukupalli
- Faculty of Medicine, University of British Columbia, 317-2194 Health Sciences Mall, Vancouver, BC, V6T 1Z3, Canada.
| | - N Duan
- Faculty of Medicine, University of British Columbia, 317-2194 Health Sciences Mall, Vancouver, BC, V6T 1Z3, Canada
| | - A Papp
- Faculty of Medicine, University of British Columbia, 317-2194 Health Sciences Mall, Vancouver, BC, V6T 1Z3, Canada; Division of Plastic Surgery, Vancouver General Hospital, 2775 Laurel Street, 11th Floor, Vancouver, BC, V5Z 1M9, Canada
| |
Collapse
|
10
|
Bognar L, Bellyei S, Hegedus I, Gombos K, Horvath O, Vereczkei A, Pozsgai E, Papp A. Prognostic role of HPV infection in esophageal squamous cell carcinoma. Eur J Surg Oncol 2019. [DOI: 10.1016/j.ejso.2018.10.304] [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: 11/26/2022] Open
|
11
|
Papp A, Brandus B, Cserhalmi M, Uzonyi B, Ermert D, Barbosa AS, Blom AM, Isaac L, Meri S, Józsi M. FHR1 and FHR5 compete with factor H for the binding to bacterial proteins and enhance complement activation. Mol Immunol 2018. [DOI: 10.1016/j.molimm.2018.06.174] [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: 11/25/2022]
|
12
|
Affiliation(s)
- H Pangli
- University of British Columbia, Vancouver, BC, Canada
| | - A Papp
- University of British Columbia, Vancouver, BC, Canada
| |
Collapse
|
13
|
Papp A, Cserhalmi M, Csincsi ÁI, Uzonyi B, Ermert D, Blom AM, Józsi M. Mapping of ligand binding sites provides insight into the function of factor H-related protein 5. Mol Immunol 2017. [DOI: 10.1016/j.molimm.2017.06.094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
14
|
Schultz JK, Wallon C, Blecic L, Forsmo HM, Folkesson J, Buchwald P, Kørner H, Dahl FA, Øresland T, Yaqub S, Papp A, Ersson U, Zittel T, Fagerström N, Gustafsson D, Dafnis G, Cornelius M, Egenvall M, Nyström PO, Syk I, Vilhjalmsson D, Arbman G, Chabok A, Helgeland M, Bondi J, Husby A, Helander R, Kjos A, Gregussen H, Talabani AJ, Tranø G, Nygaard IH, Wiedswang G, Sjo OH, Desserud KF, Norderval S, Gran MV, Pettersen T, Sæther A. One-year results of the SCANDIV randomized clinical trial of laparoscopic lavage versus primary resection for acute perforated diverticulitis. Br J Surg 2017. [DOI: 10.1002/bjs.10567] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Abstract
Background
Recent randomized trials demonstrated that laparoscopic lavage compared with resection for Hinchey III perforated diverticulitis was associated with similar mortality, less stoma formation but a higher rate of early reintervention. The aim of this study was to compare 1-year outcomes in patients who participated in the randomized Scandinavian Diverticulitis (SCANDIV) trial.
Methods
Between February 2010 and June 2014, patients from 21 hospitals in Norway and Sweden presenting with suspected perforated diverticulitis were enrolled in a multicentre RCT comparing laparoscopic lavage and sigmoid resection. All patients with perforated diverticulitis confirmed during surgery were included in a modified intention-to-treat analysis of 1-year results.
Results
Of 199 enrolled patients, 101 were assigned randomly to laparoscopic lavage and 98 to colonic resection. Perforated diverticulitis was confirmed at the time of surgery in 89 and 83 patients respectively. Within 1 year after surgery, neither severe complications (34 versus 27 per cent; P = 0·323) nor disease-related mortality (12 versus 11 per cent) differed significantly between the lavage and surgery groups. Among the 144 patients with purulent peritonitis, the rate of severe complications (27 per cent (20 of 74) versus 21 per cent (15 of 70) respectively; P = 0·445) and disease-related mortality (8 versus 9 per cent) were similar. Laparoscopic lavage was associated with more deep surgical-site infections (32 versus 13 per cent; P = 0·006) but fewer superficial surgical-site infections (1 versus 17 per cent; P = 0·001). More patients in the lavage group underwent unplanned reoperations (27 versus 10 per cent; P = 0·010). Including stoma reversals, a similar proportion of patients required a secondary operation (28 versus 29 per cent). The stoma rate at 1 year was lower in the lavage group (14 versus 42 per cent in the resection group; P < 0·001); however, the Cleveland Global Quality of Life score did not differ between groups.
Conclusion
The advantages of laparoscopic lavage should be weighed against the risk of secondary intervention (if sepsis is unresolved). Assessment to exclude malignancy (although uncommon) is advised. Registration number: NCT01047462 (http://www.clinicaltrials.gov).
Collapse
Affiliation(s)
| | - J K Schultz
- Department of Gastrointestinal Surgery, Akershus University Hospital, Lørenskog, Norway
- Institute of Clinical Medicine, Campus Ahus, University of Oslo, Oslo, Norway
| | - C Wallon
- Department of Surgery and Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - L Blecic
- Department of Gastrointestinal Surgery, Østfold Hospital Kalnes, Fredrikstad, Norway
| | - H M Forsmo
- Department of Gastrointestinal and Emergency Surgery, Haukeland University Hospital, Bergen, Norway
- Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - J Folkesson
- Colorectal Surgery Unit, Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
| | - P Buchwald
- Colorectal Unit, Department of Surgery, Skåne University Hospital Malmö, Malmö, Sweden
| | - H Kørner
- Department of Clinical Medicine, University of Bergen, Bergen, Norway
- Department of Gastrointestinal Surgery, Stavanger University Hospital, Stavanger, Norway
| | - F A Dahl
- Health Services Research Centre, Akershus University Hospital, Lørenskog, Norway
- Institute of Clinical Medicine, Campus Ahus, University of Oslo, Oslo, Norway
| | - T Øresland
- Department of Gastrointestinal Surgery, Akershus University Hospital, Lørenskog, Norway
- Institute of Clinical Medicine, Campus Ahus, University of Oslo, Oslo, Norway
| | - S Yaqub
- Department of Gastrointestinal Surgery, Oslo University Hospital, Oslo, Norway
| | - A Papp
- Hudiksvalls Hospital, Hudiksvall
| | - U Ersson
- Hudiksvalls Hospital, Hudiksvall
| | - T Zittel
- Hudiksvalls Hospital, Hudiksvall
| | | | | | - G Dafnis
- Eskilstuna County Hospital, Eskilstuna
| | | | - M Egenvall
- Karolinska University Hospital, Stockholm
| | | | - I Syk
- Skåne University Hospital, Malmö
| | | | - G Arbman
- Vrinnevi Hospital, Linköping University, Norköping
| | - A Chabok
- Västmanland Hospital, Västerås, Norway
| | | | - J Bondi
- Bærum Hospital, Vestre Viken Helseforetak
| | - A Husby
- Diakonhjemmet Hospital, Oslo
| | - R Helander
- Drammen Hospital, Vestre Viken HF, Drammen
| | - A Kjos
- Innlandet Hospital, Hamar
| | | | - A J Talabani
- Levanger Hospital, North-Trøndelag Hospital Trust, Levanger
| | - G Tranø
- Levanger Hospital, North-Trøndelag Hospital Trust, Levanger
| | - I H Nygaard
- Molde Hospital, Helse Møre og Romsdal, Molde
| | | | - O H Sjo
- Oslo University Hospital, Oslo
| | | | | | - M V Gran
- University Hospital of North Norway, Tromsø
| | | | | |
Collapse
|
15
|
Abstract
The effects of amitraz, a formamidine pesticide, were investigated in four-week old outbred male Wistar rats on certain classic toxicological and haematological parameters as well as on specific immune functions. The animals were treated, per os by gavage for 28 days, in a five-day treatment two days break system, with 26.5, 21.1, 10.6 and 5.29 mg/kg/day amitraz. On the 29th day, organ weights of the thymus, heart, lung, spleen, liver, kidneys, adrenals, testicles and popliteal lymph node; WBC and RBC counts, Ht, MCV, haemoglobin; and cell content of the femoral bone marrow were determined. In two separate groups, the effects of amitraz on the PFC content of the spleen, and on the maximum level and time course of DTH reaction, were investigated. Amitraz in 26.5 mg/kg dose increased relative adrenal weight, and decreased relative liver weight, MCV value, PFC content of the spleen, and the maximum level of DTH reaction. The 21.1 mg/kg dose decreased only MCV value, while 10.6 mg/kg elevated the liver-to-brain weight ratio. Based of these findings, a NOEL dose of 5.29 mg/kg was determined for amitraz in this experimental system; while the LOEL doses were 10.6 mg/kg for the general toxicological, 21.1 mg/kg for the haematological and 26.5 mg/kg for the immune function parameters. The results show that the exposure sensitivity of these immune functions to amitraz is lower than that of some other toxicological and haematological parameters. Human & Experimental Toxicology ( 2007) 26 , 441—445
Collapse
Affiliation(s)
- L Institoris
- Department of Public Health, Faculty of Medicine, University of Szeged, Dóm tér 10, H-6720 Szeged, Hungary.
| | | | | | | | | |
Collapse
|
16
|
Albisetti E, Petti D, Pancaldi M, Madami M, Tacchi S, Curtis J, King WP, Papp A, Csaba G, Porod W, Vavassori P, Riedo E, Bertacco R. Nanopatterning reconfigurable magnetic landscapes via thermally assisted scanning probe lithography. Nat Nanotechnol 2016; 11:545-551. [PMID: 26950242 DOI: 10.1038/nnano.2016.25] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Accepted: 02/04/2016] [Indexed: 05/11/2023]
Abstract
The search for novel tools to control magnetism at the nanoscale is crucial for the development of new paradigms in optics, electronics and spintronics. So far, the fabrication of magnetic nanostructures has been achieved mainly through irreversible structural or chemical modifications. Here, we propose a new concept for creating reconfigurable magnetic nanopatterns by crafting, at the nanoscale, the magnetic anisotropy landscape of a ferromagnetic layer exchange-coupled to an antiferromagnetic layer. By performing localized field cooling with the hot tip of a scanning probe microscope, magnetic structures, with arbitrarily oriented magnetization and tunable unidirectional anisotropy, are reversibly patterned without modifying the film chemistry and topography. This opens unforeseen possibilities for the development of novel metamaterials with finely tuned magnetic properties, such as reconfigurable magneto-plasmonic and magnonic crystals. In this context, we experimentally demonstrate spatially controlled spin wave excitation and propagation in magnetic structures patterned with the proposed method.
Collapse
Affiliation(s)
- E Albisetti
- Dipartimento di Fisica, Politecnico di Milano, 20133 Milano, Italy
- School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
| | - D Petti
- Dipartimento di Fisica, Politecnico di Milano, 20133 Milano, Italy
| | - M Pancaldi
- CIC nanoGUNE, E-20018 Donostia-San Sebastian, Spain
| | - M Madami
- Dipartimento di Fisica e Geologia, Università di Perugia, 06123 Perugia, Italy
| | - S Tacchi
- Istituto Officina dei Materiali del CNR (CNR-IOM), Unità di Perugia, c/o Dipartimento di Fisica e Geologia, 06123 Perugia, Italy
| | - J Curtis
- School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
| | - W P King
- Department of Mechanical Science and Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, USA
| | - A Papp
- Center for Nano Science and Technology, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - G Csaba
- Center for Nano Science and Technology, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - W Porod
- Center for Nano Science and Technology, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - P Vavassori
- CIC nanoGUNE, E-20018 Donostia-San Sebastian, Spain
- IKERBASQUE, Basque Foundation for Science, 48013 Bilbao, Spain
| | - E Riedo
- School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
- CUNY-Advanced Science Research Center and City College New York, City University of New York, 85 St Nicholas Terrace, New York, New York 10031, USA
| | - R Bertacco
- Dipartimento di Fisica, Politecnico di Milano, 20133 Milano, Italy
- IFN-CNR, c/o Politecnico di Milano, Piazza Leonardo da Vinci, 32, 20133 Milano, Italy
| |
Collapse
|
17
|
Weiss B, Körmendi J, Papp A, Dombovári M, Nagy Z. ID 297 – Changes in finger tapping-related desynchronization during motor stroke recovery. Clin Neurophysiol 2016. [DOI: 10.1016/j.clinph.2015.11.307] [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: 11/27/2022]
|
18
|
Maneschg OA, Volek E, Lohinai Z, Resch MD, Papp A, Korom C, Karlinger K, Németh J. [Accuracy and relevance of CT volumetry in open ocular injuries with intraocular foreign bodies]. Ophthalmologe 2015; 112:359-63. [PMID: 25698591 DOI: 10.1007/s00347-014-3230-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
BACKGROUND/OBJECTIVES The aim of the study was to evaluate the volume of intraocular foreign bodies (IOFB) using computed tomography (CT) volumetry as a prognostic factor for clinical outcome in open ocular injuries. PATIENTS AND METHODS This study compared the volume of 11 IOFBs more than 5 mm(3) in size based on CT volumetry with the real size determined by in vitro measurement. A retrospective evaluation of clinical data, visual acuity, complications and relation of size of IOFBs with clinical outcome in 33 patients (mean age 41.0 ± 13.5 years) with open ocular injuries treated at our department between January 2005 and December 2010 was carried out. RESULTS No significant differences were found between pairwise in vitro measurement and CT volumetric size (p = 0.07). All patients were surgically treated by pars plana vitrectomy. The mean follow-up time was 7.6± 6.2 months and the mean preoperative best corrected visual acuity (BCVA) was 0.063 ± 0.16 (logMAR 1.2 ± 0.79). Postoperatively, a mean BCVA of 0.25 ± 0.2 (logMAR 0.6 ± 0.69) could be achieved. Clinical outcomes were significantly better in injuries with small IOFBs measuring < 15 mm(3) (p = 0.0098). CONCLUSIONS The use of CT volumetry is an accurate method for measurement of IOFBs. Exact data about the size and measurement of volume are also an important factor for the prognosis of clinical outcome in open ocular injuries with IOFBs and CT volumetry can also provide important information about the localization of IOFBs.
Collapse
Affiliation(s)
- O A Maneschg
- Klinik für Augenheilkunde, Semmelweis Universität Budapest, Mária utca 39, 1085, Budapest, Ungarn,
| | | | | | | | | | | | | | | |
Collapse
|
19
|
Phelps MA, Stinchcombe TE, Blachly JS, Zhao W, Schaaf LJ, Starrett SL, Wei L, Poi M, Wang D, Papp A, Aimiuwu J, Gao Y, Li J, Otterson GA, Hicks WJ, Socinski MA, Villalona-Calero MA. Erlotinib in African Americans with advanced non-small cell lung cancer: a prospective randomized study with genetic and pharmacokinetic analyses. Clin Pharmacol Ther 2014; 96:182-91. [PMID: 24781527 DOI: 10.1038/clpt.2014.93] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2013] [Accepted: 04/15/2014] [Indexed: 11/09/2022]
Abstract
Prospective studies on epidermal growth factor receptor (EGFR) inhibitors in African Americans with non-small cell lung cancer (NSCLC) have not previously been performed. In this phase II randomized study, 55 African Americans with NSCLC received 150 mg/day erlotinib or a body weight-adjusted dose with subsequent escalations to the maximum-allowable dose, 200 mg/day, to achieve rash. Erlotinib and OSI-420 exposures were lower than those observed in previous studies, consistent with CYP3A pharmacogenetics implying higher metabolic activity. Tumor genetics showed only two EGFR mutations, EGFR amplification in 17/47 samples, eight KRAS mutations, and five EML4-ALK translocations. Although absence of rash was associated with shorter time to progression (TTP), disease-control rate, TTP, and 1-year survival were not different between the two dose groups, indicating the dose-to-rash strategy failed to increase clinical benefit. Low incidence of toxicity and low erlotinib exposure suggest standardized and maximum-allowable dosing may be suboptimal in African Americans.
Collapse
Affiliation(s)
- M A Phelps
- 1] College of Pharmacy, The Ohio State University, Columbus, Ohio, USA [2] College of Medicine, The Ohio State University, Columbus, Ohio, USA
| | - T E Stinchcombe
- University of North Carolina College of Medicine, Chapel Hill, North Carolina, USA
| | - J S Blachly
- College of Medicine, The Ohio State University, Columbus, Ohio, USA
| | - W Zhao
- College of Medicine, The Ohio State University, Columbus, Ohio, USA
| | - L J Schaaf
- 1] College of Pharmacy, The Ohio State University, Columbus, Ohio, USA [2] College of Medicine, The Ohio State University, Columbus, Ohio, USA
| | - S L Starrett
- Wexner Medical Center, Department of Medicine and Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio, USA
| | - L Wei
- Center for Biostatistics, The Ohio State University, Columbus, Ohio, USA
| | - M Poi
- College of Medicine, The Ohio State University, Columbus, Ohio, USA
| | - D Wang
- College of Medicine, The Ohio State University, Columbus, Ohio, USA
| | - A Papp
- College of Medicine, The Ohio State University, Columbus, Ohio, USA
| | - J Aimiuwu
- College of Pharmacy, The Ohio State University, Columbus, Ohio, USA
| | - Y Gao
- College of Pharmacy, The Ohio State University, Columbus, Ohio, USA
| | - J Li
- College of Public Health, The Ohio State University, Columbus, Ohio, USA
| | - G A Otterson
- College of Medicine, The Ohio State University, Columbus, Ohio, USA
| | - W J Hicks
- College of Medicine, The Ohio State University, Columbus, Ohio, USA
| | - M A Socinski
- University of North Carolina College of Medicine, Chapel Hill, North Carolina, USA
| | | |
Collapse
|
20
|
Guba K, Pancazel G, Kamondi A, Papp A, Rozsa C, Gacs G. Atypical liquor-hypotension syndromes. J Neurol Sci 2013. [DOI: 10.1016/j.jns.2013.07.1714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
21
|
Gitt AK, Towae F, Papp A, Zeymer U, Zahn R, Schneider S, Schnell O, Tschoepe D, Senges J. Increased 3-year-mortality after acute myocardial infarction in patients with newly diagnosed diabetes - results of SWEETHEART. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p5310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
22
|
Papp A. Studies on the detection of concealed objects using the neutron reflection method. Appl Radiat Isot 2013; 75:26-9. [DOI: 10.1016/j.apradiso.2013.01.028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2012] [Revised: 01/15/2013] [Accepted: 01/16/2013] [Indexed: 10/27/2022]
|
23
|
Azad AK, Curtis A, Papp A, Webb A, Knoell D, Sadee W, Schlesinger LS. Allelic mRNA expression imbalance in C-type lectins reveals a frequent regulatory SNP in the human surfactant protein A (SP-A) gene. Genes Immun 2013; 14:99-106. [PMID: 23328842 PMCID: PMC3594410 DOI: 10.1038/gene.2012.61] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [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] [Indexed: 01/21/2023]
Abstract
Genetic variation in C-type lectins influences infectious disease susceptibility but remains poorly understood. We employed allelic mRNA expression imbalance (AEI) technology for SP-A1, SP-A2, SP-D, DC-SIGN, MRC1, and Dectin-1, expressed in human macrophages and/or lung tissues. Frequent AEI, an indicator of regulatory polymorphisms, was observed in SP-A2, SP-D, and DC-SIGN. AEI was measured for SP-A2 in 38 lung tissues using four marker SNPs and was confirmed by next generation sequencing of one lung RNA sample. Genomic DNA at the SP-A2 DNA locus was sequenced by Ion Torrent technology in 16 samples. Correlation analysis of genotypes with AEI identified a haplotype block, and, specifically, the intronic SNP rs1650232 (30% MAF); the only variant consistently associated with an approximately two-fold change in mRNA allelic expression. Previously shown to alter a NAGNAG splice acceptor site with likely effects on SP-A2 expression, rs1650232 generates an alternative splice variant with three additional bases at the start of exon 3. Validated as a regulatory variant, rs1650232 is in partial LD with known SP-A2 marker SNPs previously associated with risk for respiratory diseases including tuberculosis. Applying functional DNA variants in clinical association studies, rather than marker SNPs, will advance our understanding of genetic susceptibility to infectious diseases.
Collapse
Affiliation(s)
- A K Azad
- Department of Microbial Infection and Immunity, Center for Microbial Interface Biology, College of Medicine, Columbus, OH 43210, USA
| | | | | | | | | | | | | |
Collapse
|
24
|
Takács SZ, Szabó A, Oszlánczi G, Pusztai P, Sápi A, Kónya Z, Papp A. Repeated simultaneous cortical electrophysiological and behavioral recording in rats exposed to manganese-containing nanoparticles. Acta Biol Hung 2012; 63:426-40. [PMID: 23134600 DOI: 10.1556/abiol.63.2012.4.2] [Citation(s) in RCA: 4] [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: 11/19/2022]
Abstract
Male Wistar rats wearing chronically implanted cortical electrodes were exposed to Mn-containing nanoparticles via the airways for 8 weeks following a 2-week pre-exposure period. The rats' cortical electrical activity and open field motility was recorded simultaneously, in weekly repetitions. It was supposed that this technique can provide better insight in the development of Mn-induced CNS damage. Decreased motility (less distance covered, longer periods of immobility) and increased total power of cortical electrical activity developed in parallel in the first 4-5 weeks of treatment but showed little change afterwards. Both the behavioral and the electrophysiological effect were in fair correlation with the rats' internal Mn exposure determined from brain samples. The results confirmed the non-linear dose- and time-dependence of Mn effects suggested by previous studies. Repeated simultaneous behavioral and electrophysiological recording during a longer treatment with neurotoxic metals (or other xenobiotics) seems to be a promising method.
Collapse
Affiliation(s)
- S Z Takács
- Department of Public Health, University of Szeged, Faculty of Medicine, Szeged, Hungary
| | | | | | | | | | | | | |
Collapse
|
25
|
Sikorszki L, Kalmár K, Pavlovics G, Papp A, Sajjadi SG, Szabó M, Horváth ÖP. Resection or bypass in the treatment of corrosive oesophageal strictures? Malignant transformation as a late complication in both methods. Eur Surg 2012. [DOI: 10.1007/s10353-012-0156-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
26
|
Abstract
The closure of a large hiatal hernia still represents a challenge for the surgeon. Mesh reinforcement of a hiatoplasty generally decreases recurrence rate. An artificial mesh is cheaper compared with a biologic one, but has a higher complication rate. Our aim was to introduce a new biologic reinforcement method with less expenses. During organ donation for transplantation, tissue islets from pericardium and fascia lata were cryopreserved in a tissue bank. Later, the grafts were transplanted on the diaphragm of mongrel dogs. After 1, 3, and 6 months, the animals were sacrificed, and the transplanted patches were macroscopically and microscopically examined. There were no macroscopic signs of inflammation, abcedation, or significant adhesion formation. The grafts were well recognizable, with palpable thickening and moderate shrinkage. Microscopically, an organization process with fibrosis, neovascularization, and peritoneal integration could be observed. Reinforcement of a hiatoplasty with connective tissue transfer either with cryopreserved or autologous tissue is a good option. This is a cheap and easy method, which should also be tested in human interventions.
Collapse
Affiliation(s)
- A Vereczkei
- Departments of Surgery, Medical School University of Pécs, Pécs, Hungary.
| | | | | | | | | |
Collapse
|
27
|
Papp A, Halász G, Bacchus-Montabonel M, Vibók Á. Erratum to: Conical intersections induced by the Renner effect: Selected systems [Chem. Phys. Lett. 504 (2011) 20–23]. Chem Phys Lett 2012. [DOI: 10.1016/j.cplett.2012.02.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
28
|
Marton S, Juhasz V, Bogar L, Papp A, Cseke L, Horvath PO, Koszegi T, Ghosh S. Direct effects of chemoradiotherapy following esophagectomy. Eur Surg Res 2011; 47:63-9. [PMID: 21701176 DOI: 10.1159/000327685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2009] [Accepted: 03/18/2011] [Indexed: 11/19/2022]
Abstract
BACKGROUND Esophageal cancer is a major cause of morbidity and mortality, but despite continuing research, few effective therapies have been identified. In recent years, surgical resection following chemoradiotherapy has been associated with improved survival in several clinical models. AIM In a prospective, observational study, we evaluated the direct effects of chemoradiotherapy on postoperative mortality, morbidity, and inflammatory response in patients following esophagectomy. METHODS The study cohort was divided into two groups: the first group received preoperative chemoradiotherapy, while the second group had surgical intervention without prior treatment. Nutritional status was evaluated for the members of both patient groups at various time points. RESULTS Preoperative chemoradiotherapy did not influence morbidity or organ function, and the postoperative inflammatory response did not show immunosuppressive side effects directly after surgery. CONCLUSION Preoperative chemoradiotherapy does not improve postoperative organ function, inflammatory response or nutritional status in the patients. These findings may help to improve outcome in patients with esophageal cancer in the future.
Collapse
Affiliation(s)
- S Marton
- Department of Anesthesiology and Intensive Therapy, University of Pecs, Pecs, Hungary
| | | | | | | | | | | | | | | |
Collapse
|
29
|
Farkas R, Pozsgai E, Bellyei S, Cseke L, Szigeti A, Vereczkei A, Marton S, Mangel L, Horvath OP, Papp A. Correlation between tumor-associated proteins and response to neoadjuvant treatment in patients with advanced squamous-cell esophageal cancer. Anticancer Res 2011; 31:1769-1775. [PMID: 21617238] [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: 05/30/2023]
Abstract
BACKGROUND Possible predictive markers of response to neoadjuvant radiochemotherapy (NRCT) of esophageal cancer have been identified. PATIENTS AND METHODS Patient biopsies were obtained from both tumor and normal tissue before the NRCT of locally advanced esophageal squamous cell carcinoma. Protein solutions were separated and immunoblot analysis was performed with heat shock protein (Hsp)16.2, heme-binding protein 2 (SOUL), BCL2-associated X protein (Bax), B-cell-associated leukemia protein 2 (Bcl-2) and heat shock protein 90 (Hsp90) antibodies. Following NRCT, the patients were restaged according to the Response Evaluation Criteria In Solid Tumors (RECIST). Following resections the pathological down-staging was evaluated. RESULTS Clinical restaging revealed a response rate of 65%. Pathological examination revealed down-staging in 30% and 25% of the cases for the T and N categories respectively. Compared to the normal esophageal mucosa, a decreased expression of Hsp16.2, Hsp90 and SOUL proteins and an increased Bax/Bcl-2 ratio was found in the responding tumors. CONCLUSION Hsp16,2, Hsp90 and SOUL expression and Bax/ Bcl-2 ratio correlates to the efficacy of NRCT and predict outcome in patients with locally advanced squamous-cell esophageal cancer.
Collapse
Affiliation(s)
- R Farkas
- Departments of Oncology, University of Pécs, Hungary
| | | | | | | | | | | | | | | | | | | |
Collapse
|
30
|
|
31
|
|
32
|
Maneschg O, Resch M, Papp A, Németh J. Prognostische Faktoren und klinische Ergebnisse in der Behandlung von offenen Augenverletzungen mit intraokularen Fremdkörpern. Klin Monbl Augenheilkd 2010; 228:801-7. [DOI: 10.1055/s-0029-1245756] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
33
|
Papp A, Csikai J. Studies on the properties of an epithermal-neutron hydrogen analyzer. Appl Radiat Isot 2010; 68:1677-81. [DOI: 10.1016/j.apradiso.2010.03.007] [Citation(s) in RCA: 4] [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: 12/07/2009] [Revised: 02/17/2010] [Accepted: 03/02/2010] [Indexed: 11/28/2022]
|
34
|
Abstract
UNLABELLED Glutamine is the most abundant amino-acid in the extra- and intracellular compartments of the human body, which accounts for over 50% of its free amino-acid content. Utilization of glutamine peptides is explicitly useful, resulting in a decrease in the number of postoperative infectious complications, period of hospitalization, and therapeutic costs. This article aims to study the effects of glutamine on systemic inflammatory response, morbidity, and mortality after esophagectomy. A prospective, randomized, double-blind, and controlled trial was used. Following sealed-envelope block randomization, the patients were divided into two groups. Members of the glutamine group (group G) received glutamine (Dipeptiven, Fresenius) as continuous infusion for 6 hours at 0.5 g/kg for 3 days prior to, and 7 days following surgery; while patients of the control group were given placebo. We examined 30 patients in group G, and 25 patients as controls. In both patient groups, the levels of total protein, albumin, pre-albumin, retinol binding protein, transferrin, transferring-saturation, C-reactive protein, procalcitonin, lymphocte, Interleukin-6, Interleukin-8, tumor necrosis factor alpha, and serum lactate were determined prior to surgery (t(0)), directly after surgery (t(u)), following surgery on day 1 (t(1)), day 2 (t(2)), and day 7 (t(7)). For statistical analysis Mann-Whitney U test and chi-square test were used. There was no significant difference between the two groups regarding age, male/female ratio, and SAPS II scores. Intensive care unit morbidity and mortality was similar in both groups (group G: 24 survivors/6 nonsurvivors; CONTROL 17 survivors/8 nonsurvivors; P= 0.607). Daily Multiple Organ Dysfunction Score did not differ significantly between the two groups. The observed inflammatory markers followed the pattern we described without significant difference. Based on our study, the glutamine supplementation that we used had no influence on morbidity, mortality, or postoperative inflammatory response after esophagectomy.
Collapse
Affiliation(s)
- S Marton
- Department of Anaesthesiology and Intensive Therapy, University of Pecs, 7643 Pecs, Hungary.
| | | | | | | | | | | | | | | |
Collapse
|
35
|
Lukács A, Szabó A, Papp A, Vezér T. Altered open field behavior in rats induced by acute administration of 3-nitropropionic acid: possible glutamatergic and dopaminergic involvement. Acta Biol Hung 2009; 60:359-67. [PMID: 20015828 DOI: 10.1556/abiol.60.2009.4.3] [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: 11/19/2022]
Abstract
3-nitropropionic acid (3-NP), a substance used for modelling Huntington's disease, was given to male Wistar rats in a single 20 mg/kg b.w. dose, and the resulting behavioral alterations in spontaneous locomotor activity were measured after 30 minutes. To detect the involvement of neurotransmitter systems in this immediate effect, the NMDA antagonist MK-801 (0.8 mg/kg); as well as an agonist, quinpirole (QP, 5 mg/kg) and an antagonist, sulpiride (SP, 80 mg/kg) of the dopamine D2 receptors, were given before 3-NP to separate groups of rats. Controls were given saline. All substances were injected ip. 3-NP decreased the rats' locomotor, especially vertical, activity, whereas local activity was increased. Based on the further changes of 3-NP effects in the combination groups it could be concluded that dopaminergic rather than glutamatergic mechanisms were possibly involved in the acute behavioral effect of 3-NP.
Collapse
Affiliation(s)
- Anita Lukács
- University of Szeged Department of Public Health Szeged Hungary
| | | | | | | |
Collapse
|
36
|
Wolf M, Benko R, Undi S, Dekany A, Illenyi L, Papp A, Varga G, Zapf I, Bartho L. In vitro pharmacology of inosine, with special reference to possible interactions with capsaicin-sensitive mechanisms and inflammatory mediators. Methods Find Exp Clin Pharmacol 2009; 31:359-366. [PMID: 19798450 DOI: 10.1358/mf.2009.31.6.1393630] [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] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The in vitro pharmacology of inosine (Ino), a putative anti-inflammatory compound, has been investigated in smooth muscle preparations, with emphasis on its possible interaction with known inflammatory mediators, as well as capsaicin, an inducer of "neurogenic inflammation". The highest concentration of Ino routinely studied was 1 mM, since 10 mM nonspecifically inhibited many types of smooth muscle motor responses. In the guinea pig isolated ileum or trachea, Ino (1 mM) failed to influence the excitatory effect of capsaicin. The nitric oxide (NO)-mediated relaxant effect of capsaicin in the human colonic circular muscle was not influenced by Ino. Ino only weakly reduced the contractile effect of histamine on the guinea pig ileum. Substance P-mediated nonadrenergic, noncholinergic (NANC) contractions evoked by electrical stimulation in the guinea pig ileum were inhibited by half by Ino (1 mM). Ino showed no or only a weak inhibitory effect on NANC relaxation of the rat ileum. Arachidonic acid- or leukotriene D(4)-induced contractions of the guinea pig ileum were only moderately inhibited by Ino. Collectively, these results indicate that Ino (up to 1 mM) shows no major antagonist activity at histamine H(1) receptors, leukotriene CysLT(1) receptors, the transient receptor potential channel TRPV1 or tachykinin NK(1) or NK(2) receptors, or cyclooxygenase-inhibitory activity. Therefore, its anti-inflammatory activity is probably not associated with these mechanisms. The in vitro methods used in this study are capable of detecting a wide range of biological effects and hence may be recommended as a screening procedure for potential drugs or natural products.
Collapse
Affiliation(s)
- M Wolf
- Department of Pharmacology and Pharmacotherapy University Medical School of Pecs, Pecs, Hungary
| | | | | | | | | | | | | | | | | |
Collapse
|
37
|
Setälä L, Papp A, Joukainen S, Martikainen R, Berg L, Mustonen P, Härmä M. Obesity and complications in breast reduction surgery: are restrictions justified? J Plast Reconstr Aesthet Surg 2009; 62:195-9. [DOI: 10.1016/j.bjps.2007.10.043] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2007] [Accepted: 10/18/2007] [Indexed: 11/26/2022]
|
38
|
Vámos G, Papp A. Pancoast-Syndrom und Lungentuberkulose. Respiration 2009. [DOI: 10.1159/000192080] [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: 11/19/2022] Open
|
39
|
Lesch B, Szabó V, Kánya M, Somfai G, Vámos R, Varsányi B, Pámer Z, Knézy K, Salacz G, Janáky M, Ferencz M, Hargitai J, Papp A, Farkas Á. Clinical and genetic findings in Hungarian patients with X-linked juvenile retinoschisis. Mol Vis 2008; 14:2321-32. [PMID: 19093009 PMCID: PMC2603250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2008] [Accepted: 11/30/2008] [Indexed: 11/26/2022] Open
Abstract
PURPOSE To determine clinical phenotypes, examine the age dependency of X-linked juvenile retinoschisis (XLRS), and identify mutations in the retinoschisis1 gene (RS1) in 13 Hungarian (Caucasian) families with this disease. METHODS This study included 72 members in 13 families. Complete ophthalmological examinations, including optical coherence tomography (OCT) and full-field and multifocal electroretinography (ERG), were performed on 20 affected males, 13 female carriers, and 27 healthy controls. The patients were divided into two age groups (Group I <25 years and Group II >25 years), retrospectively, to assess the possible effects of age. Correlations among genotype, age, best corrected visual acuity (BCVA), OCT, and ERG results were analyzed. A modified classification scheme was done to identify the different phenotypes of the disease. In each of the 72 family members and 100 age-matched male controls, all exons and introns of RS1 were amplified by polymerase chain reaction (PCR) and directly sequenced. RESULTS Foveal retinoschisis was detected in 25 eyes (62.5%) of patients by funduscopy, and in 29 eyes (72.5%) by OCT, while macular lamellar schisis was recognizable only by OCT in 30 eyes (75%) of patients. Foveal thickness (FT) and total macular volume were significantly increased in younger (Group I) patients only. For patients younger than 26 years, large inner nuclear central cysts were observable by OCT, while after 26 years, foveas were atrophic. White flecks and dots, which were like that seen in fundus albipunctatus, were detected in both eyes of one patient. In both patient groups, characteristically decreased b-waves of standard combined ERG were recorded without any significant difference between the patient groups. The BCVA and ERG parameters of all patients and the OCT of younger patients were significantly worse (p<0.05) than those of age-matched controls. A significant difference between the two age groups was found in case FT, total macular volume, and amplitudes of rod b-wave only. Moderate negative correlation (r=-0.54, p<0.001) was detected between age and FT, while only low negative correlation (r=-0.33, p<0.05) was detected between age and standard combined b-wave amplitudes of full-field ERG. BCVA LogMAR did not show any obvious correlation with age (r=-0.14, p=0.39) or with the type of mutation. Nine different mutations were identified in 25 male patients and 31 female carriers of 13 families: six known and one novel missense mutation (c.575C>T, p.Pro192Leu), one insertion mutation (c.579dupC, p.Ile194Hisfs29ext43), and one frameshift, causing splice site mutation (c.78+1G>C) were detected. These mutations were absent in the 100 age-matched male control samples. CONCLUSIONS Foveal cystic schisis was found more often by OCT than by funduscopy (+10%), while flat macular lamellar schisis was recognizable only by OCT. Advancing age inversely influenced the size of cavities (FT), and standard combined b-wave amplitudes of full-field ERG, while BCVA, response density, and implicit times of multifocal electroretinography did not show any obvious correlation with age. The atrophic stage of the disease was observable after 26 years of age. The lesions that appeared to be indicative of fundus albipunctatus were proven to be palisades between the splitted retinal layers. Our modified classification scheme was helpful in assessing the prevalence of disease types. In these Hungarian patients, one novel and eight known mutations were detected. The distribution of mutations in RS1 was different to that reported in the literature, because the greatest number of different mutations was in exon 6 instead of exon 4. Two mutation hot spots were found: between c.418-422 in exon 5 and between c.574-579 in exon 6. Genotype-phenotype correlation was not demonstrable.
Collapse
Affiliation(s)
- B. Lesch
- Department of Ophthalmology, Semmelweis University, Budapest, Hungary
| | - V. Szabó
- Department of Ophthalmology, Semmelweis University, Budapest, Hungary
| | - M. Kánya
- 1st Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary,OBIK Medical Biotechnology Innovation Center Inc., Budapest, Hungary
| | - G.M. Somfai
- Department of Ophthalmology, Semmelweis University, Budapest, Hungary
| | - R. Vámos
- Department of Ophthalmology, Semmelweis University, Budapest, Hungary
| | - B. Varsányi
- Department of Ophthalmology, Semmelweis University, Budapest, Hungary
| | - Zs. Pámer
- Department of Ophthalmology, Medical Faculty of the University of Pécs, Pécs, Hungary
| | - K. Knézy
- Department of Ophthalmology, Semmelweis University, Budapest, Hungary
| | - Gy. Salacz
- Department of Ophthalmology, Semmelweis University, Budapest, Hungary
| | - M. Janáky
- Department of Ophthalmology, Medical Faculty of the University of Szeged, Szeged, Hungary
| | - M. Ferencz
- Department of Ophthalmology, Semmelweis University, Budapest, Hungary
| | - J. Hargitai
- Department of Ophthalmology, Semmelweis University, Budapest, Hungary
| | - A. Papp
- Department of Ophthalmology, Semmelweis University, Budapest, Hungary
| | - Á. Farkas
- Department of Ophthalmology, Semmelweis University, Budapest, Hungary
| |
Collapse
|
40
|
Sipponen A, Jokinen JJ, Sipponen P, Papp A, Sarna S, Lohi J. Beneficial effect of resin salve in treatment of severe pressure ulcers: a prospective, randomized and controlled multicentre trial. Br J Dermatol 2008; 158:1055-62. [PMID: 18284391 DOI: 10.1111/j.1365-2133.2008.08461.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND Resin salve of the Norway spruce (Picea abies) has been used in folk medicine to heal wounds and infections. OBJECTIVES To study its clinical effectiveness in the treatment of pressure ulcers of the skin. METHODS A prospective, randomized, controlled multicentre trial involving 37 patients with grade II-IV pressure ulcers in 11 primary care hospitals was carried out between 2005 and 2007. The ulcers were randomly allocated to receive either resin salve or sodium carboxymethylcellulose hydrocolloid polymer treatment. The inclusion criterion was grade II-IV pressure ulcer. Exclusion criteria were a life expectancy of less than 6 months or a malignant disease. The primary outcome measure was complete healing of the ulcer within 6 months. Secondary outcome measures were partial healing of the ulcer, and successful eradication of bacterial strains cultured from the ulcers at study entry. RESULTS Thirteen patients of the resin group and nine patients of the control group completed the 6-month trial. All ulcers healed in 12 of the 13 patients (92%) in the resin group and in four of the nine patients (44%) in the control group (P=0.003; power 73%). Complete healing of the ulcers over time was significantly more common in the resin group than in the control group (P=0.013). Bacterial cultures from the ulcer area more often became negative within 1 month in the resin group. CONCLUSIONS Traditional resin salve is significantly more effective in the treatment of infected and noninfected severe pressure ulcers than cellulose polymer gauzes.
Collapse
Affiliation(s)
- A Sipponen
- Department of Surgery, Rheumatism Foundation Hospital, 18120 Heinola, Finland.
| | | | | | | | | | | |
Collapse
|
41
|
Abstract
BACKGROUND Manganese, an essential micronutrient, is a potential neurotoxicant in prolonged overexposure. Parkinson-like syndrome, motor deficit, disturbed psychomotor development are typical signs of neuropathological alterations due to Mn in humans. METHODS Young adult rats, in three groups of 16 each, received 15 and 59 mg/kg b.w. MnCl(2), (control: distilled water) via gavage for 10 weeks, and were kept for further 12 weeks. Correlation of MnCl(2) exposure to body and organ weights, neurobehavioral effects (spatial memory, exploratory activity, psychomotor performance, pre-pulse inhibition), and histopathological changes (gliosis) was sought. RESULTS By the end of treatment, Mn accumulated in blood, cortex, hippocampus, and parenchymal tissues. Body and organ weights were reduced in high dose rats. All treated rats showed hypoactivity, decreased memory performance, and diminished sensorimotor reaction. In the dentate gyrus of these, GFAP immunoreactivity increased. During the post-treatment period, body weight of the high dose group remained decreased, locomotor activity returned to control, but the lasting effect of MnCl(2) could be revealed by amphetamine. CONCLUSION Using complex methodology, new data were obtained regarding the relationship between the long-term effects of MnCl(2) at neuronal and behavioral level.
Collapse
Affiliation(s)
- T Vezér
- Department of Public Health, University of Szeged Faculty of Medicine, Dóm toŕ 10, Szeged, Hungary.
| | | | | | | | | |
Collapse
|
42
|
Rautio M, Sipponen A, Peltola R, Lohi J, Jokinen JJ, Papp A, Carlson P, Sipponen P. Antibacterial effects of home-made resin salve from Norway spruce (Picea abies). APMIS 2007; 115:335-40. [PMID: 17504300 DOI: 10.1111/j.1600-0463.2007.apm_548.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [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: 11/30/2022]
Abstract
Resin salve made from Norway spruce (Picea abies) is traditionally used in folk medicine to heal skin ulcers and infected wounds. Its antimicrobial properties were studied against certain human bacteria important in infected skin wounds. The sensitivity of the resin against Gram-positive and Gram-negative bacteria was studied in vitro by methods that are routinely used in microbiology laboratories. The resin salve exhibited a bacteriostatic effect against all tested Gram-positive bacteria but only against Proteus vulgaris of the Gram-negative bacteria. Interestingly, the resin inhibited the growth of bacteria, including methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant enterococcus (VRE), both on agar plates and in culture media. The study demonstrated antimicrobial activity of the resin salve and provided objective evidence of its antimicrobial properties. It gives some explanations why the traditional use of home-made resin salve from Norway spruce is experienced as being effective in the treatment of infected skin ulcers.
Collapse
Affiliation(s)
- M Rautio
- Division of Clinical Microbiology, HUSLAB, Helsinki University Hospital, Jorvi Hospital, Espoo, Finland
| | | | | | | | | | | | | | | |
Collapse
|
43
|
Institóris L, Kovács D, Kecskeméti-Kovács I, Lukács A, Szabó A, Lengyel Z, Papp A, Nagymajtényi L, Dési I. Immunotoxicological investigation of subacute combined exposure with low doses of Pb, Hg and Cd in rats. Acta Biol Hung 2006; 57:433-9. [PMID: 17278705 DOI: 10.1556/abiol.57.2006.4.5] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [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
Detectable interactions between NOEL (No Observed Effect Level) doses of Pb, Hg and Cd in general toxicological, hematological, and immune function parameters were investigated. The metals (Pb-acetate, 20 mg/kg; HgCl2, 0.40 mg/kg; CdCl2, 1.61 mg/kg) were combined. First, the rats received the combination Pb + Hg + Cd for 4 weeks per os. Significant difference vs. control was found only in the weight of lung and popliteal lymph node (PLN). The Pb + Hg and Pb + Cd combinations significantly decreased the PLN to 100 g body weight and PLN to brain weight ratio, and Pb+Hg also decreased the relative adrenal weight. After 12 weeks treatment with the same doses, effects on the thymus, kidney, and adrenal weights in the Pb + Hg, and thymus weight in the Pb + Cd, combination were seen. Pb + Cd also affected the white and red blood cell count and hematocrit. Combined with Hg or Cd, NOEL dose Pb showed toxicity, indicating that exposure limits may be inefficient in combined exposure situations.
Collapse
Affiliation(s)
- L Institóris
- Department of Public Health, Faculty of Medicine, University of Szeged, Szeged, Hungary.
| | | | | | | | | | | | | | | | | |
Collapse
|
44
|
Lim JE, Papp A, Pinsonneault J, Sadée W, Saffen D. Allelic expression of serotonin transporter (SERT) mRNA in human pons: lack of correlation with the polymorphism SERTLPR. Mol Psychiatry 2006; 11:649-62. [PMID: 16432527 DOI: 10.1038/sj.mp.4001797] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
An insertion/deletion polymorphism in the SERT linked promoter region (SERTLPR), previously reported to regulate mRNA expression in vitro, has been associated with mental disorders and response to psychotropic drugs. Contradictory evidence, however, has raised questions about the role of SERTLPR in regulating mRNA expression in vivo. We have used analysis of allelic expression imbalance (AEI) of SERT mRNA to assess quantitatively the contribution of SERTLPR to mRNA expression in human post-mortem pons tissue sections containing serotonergic neurons of the dorsal and median raphe nuclei. Any difference in the expression of one allele over the other indicates the presence of cis-acting elements that differentially affect transcription and/or mRNA processing and turnover. Using a marker SNP in the 3' untranslated region of SERT mRNA, statistically significant differences in allelic mRNA levels were detected in nine out of 29 samples heterozygous for the marker SNP. While the allelic expression differences were relatively small (15-25%), they could nevertheless be physiologically relevant. Although previous results had suggested that the long form of SERTLPR yields higher mRNA levels than the short form, we did not observe a correlation between SERTLPR and allelic expression ratios. Also in contrast to previous results, we found no correlation between SERTLPR and allelic expression ratios or SERT mRNA levels in B-lymphocytes. This study demonstrates that regulation of SERT mRNA is independent of SERTLPR, but could be associated with polymorphisms in partial linkage disequilibrium with SERTLPR.
Collapse
Affiliation(s)
- J-E Lim
- Department of Pharmacology, College of Medicine and Public Health, The Ohio State University, Columbus, 43210, USA
| | | | | | | | | |
Collapse
|
45
|
Papp A, Romppanen E, Lahtinen T, Uusaro A, Härmä M, Alhava E. Red blood cell and tissue water content in experimental thermal injury. Burns 2005; 31:1003-6. [PMID: 16278049 DOI: 10.1016/j.burns.2005.06.010] [Citation(s) in RCA: 11] [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] [Received: 12/11/2004] [Accepted: 06/21/2005] [Indexed: 10/25/2022]
Abstract
UNLABELLED Oedema formation and changes in local blood flow are known phenomena in burns. The relationship between these two is not clearly described. The aim of this study was firstly to examine both the contents of red blood cells and tissue water in skin and subcutaneous fat after experimental burns of different depths in pigs, and secondly, to confirm our recent findings of the increased dielectric constant of skin and subcutaneous fat reflecting considerable oedema formation, especially in fat after thermal injury. METHODS Superficial, partial and full thickness contact burns were created to pigs and followed for 24h. Radioactive Cr-51 labelling of red cells was used to estimate the number of red cells in tissue, and the absolute amount of water was determined by lyophilization. RESULTS A decreased number of labelled red cells in skin and an increase in tissue water in subcutaneous fat were found regardless of burn depth. The highest water amount in fat was found in the partial thickness burns. CONCLUSION All burn depths resulted in a diminished number of labelled red blood cells in skin and a significant increase in the absolute water amount in subcutaneous fat at 24h post injury. The findings in fat support our recent findings of highly elevated dielectric constants measured by the new in vivo method of dielectric measurements.
Collapse
Affiliation(s)
- A Papp
- Department of Surgery, Kuopio University Hospital/2214, P.O. Box 1777, FIN-70211 Kuopio, Finland.
| | | | | | | | | | | |
Collapse
|
46
|
Szabó A, Papp A, Nagymajtényi L. Stimulus frequency dependence of the central and peripheral somatosensory evoked activity in rats treated with various pesticides. Acta Biol Hung 2005; 56:205-14. [PMID: 16196196 DOI: 10.1556/abiol.56.2005.3-4.4] [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: 11/19/2022]
Abstract
Rats were treated with a combination of insecticide agents in different timing schemes. In acute administration, 1/5 LD50 of the three insecticides: dimethoate, propoxur and cypermethrin, or their combination, was given once by gavage. In the developmental model, female rats received oral doses of 1/25 LD50 of the above insecticides in combination in three timing schemes including pregnancy and lactation. Responses in the somatosensory cortex and in the tail nerve, evoked by peripheral electric stimulation, were recorded in acute preparation under urethane anesthesia. It was tested whether the parameters of the cortical and peripheral evoked response are dependent on the frequency and whether this dependence is different in control and treated animals. The latency increase of the cortical responses with increasing stimulation frequency was significantly stronger in rats treated acutely with cypermethrin and the combination, and in rats receiving the combination during both intra- and extrauterine development. On the duration, the effects were less clear. Frequency dependent increase of the tail nerve action potential latency was significantly intensified by cypermethrin, and the amplitude decrease, by cypermethrin and dimethoate. Fatigue of this response during a stimulation series was also altered by the insecticides. Frequency dependence and fatigue possibly reflect the actual state of the nervous system and may have the potency to be developed to functional biomarkers.
Collapse
Affiliation(s)
- Andrea Szabó
- Department of Public Health, Faculty of Medicine, University of Szeged, Dóm tér 10, H-6720 Szeged, Hungary.
| | | | | |
Collapse
|
47
|
Abstract
Several techniques for esophageal resections have been reported. However, clear clinical evidence is still lacking whether any of the procedures is superior to the others regarding morbidity and mortality in the early postoperative period. Two operative approaches for esophageal carcinoma, transhiatal and transthoracic, were compared with respect to operative morbidity, mortality and systemic inflammatory response. In our prospective study between 2000 and 2002 83 patients were investigated. In a retrospective post hoc analysis patients were divided into two groups due to the performed operational procedure, transhiatal (TH) or transthoracic (TT). Multiple Organ Dysfunction Score (MODS) was monitored daily (t1,t2,t3). Serum procalcitonin (PCT) levels were determined on admission to the ICU (t0), then 24 hourly (t24,t48,t72). Microalbuminuria (M:Cr) was measured before (tp), and after surgery (t0,t6,t24,t48,t72). For statistical analysis Wilcoxon rank sum test, Mann-Whitney U-test and chi-square test were used as appropriate. We examined 52 patients in the TH group, and 31 patients in the TT group. There was no significant difference between the two groups regarding age, male/female ratio, and SAPS II scores. Operations lasted significantly longer in the TT group: 375 (300-480) min compared to the TH group 240 375 (180-319) min, P < 0.001. ICU mortality was similar in both groups (TH: 46 survivors/6 non-survivors; TT: 27 survivors/4 non-survivors; P = 0.607, respectively). Daily MODS did not differ significantly between the two groups. The observed inflammatory markers (PCT and M:Cr) followed the pattern we described earlier, without significant difference. In this study there was no difference in the clinical and biochemical variables of the patients between the transthoracic and transhiatal groups. The observed early postoperative morbidity and mortality may indicate, that both procedures can be considered as procedures with similar postoperative risk.
Collapse
Affiliation(s)
- S Márton
- Department of Anesthesiology and Intensive Care, University of Pécs, Pécs, Hungary.
| | | | | | | | | |
Collapse
|
48
|
Papp A, Härmä M, Harvima R, Lahtinen T, Uusaro A, Alhava E. Microdialysis for detection of dynamic changes in tissue histamine levels in experimental thermal injury. Burns 2005; 31:476-81. [PMID: 15896511 DOI: 10.1016/j.burns.2004.12.004] [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: 11/28/2022]
Abstract
Histamine is an important mediator contributing to oedema formation after thermal injury. Tissue histamine concentrations have been previously determined by analyzing tissue biopsies. The microdialysis method enables continuous collection of samples from the extracellular tissue fluid. In this experimental burn study on pigs samples from the extracellular fluid for histamine analysis were collected from superficial, partial thickness and full thickness burn sites during a 24-h period. There was a burn depth-related increase in histamine concentrations during the first 2 h post injury. Deep burns induced a more profound initial increase in tissue histamine concentration than the partial thickness and superficial burns. Histamine concentrations at all burn sites declined until 12 h post injury. There was a second rise in tissue histamine concentrations between 12 and 24 h post injury without a rise in plasma histamine concentrations. Histamine concentrations at all burn sites were higher than at the non-burned control sites. The microdialysis technique is an easily applicable method of collecting on-line samples from burned tissue. This method provides a useful tool in investigating the effects of different treatment modalities on the secretion of substances into interstitial fluid within burned tissue.
Collapse
Affiliation(s)
- A Papp
- Department of Surgery, Kuopio University Hospital, P.O. Box 1777, 70211 Kuopio, Finland.
| | | | | | | | | | | |
Collapse
|
49
|
Abstract
AIM To determine the incidence of and reasons for recurrences after immediate breast reconstruction in breast cancer patients. MATERIAL AND METHODS The data of 79 patients undergoing immediate breast reconstruction between 1998 and 2001 in Kuopio University Hospital were re-examined from both the local cancer register and the patient charts at the end of year 2003. RESULTS There were five local recurrences (6.3%), one regional recurrence (1.2%), and three cases (3.8%) presented bone and/or visceral metastases. All recurrences except one (primary tumor noninvasive) appeared within the first two years after primary therapy. Young age and increasing size of the tumour were risk factors for distant or logoregional metastases. CONCLUSION Immediate breast reconstruction is a safe procedure in breast cancer patients, but a multidisciplinary team is needed for careful patient selection.
Collapse
Affiliation(s)
- P Mustonen
- Department of Plastic Surgery, Kuopio University Hospital, Kuopio, Finland. paula
| | | | | | | | | |
Collapse
|
50
|
Fuszek P, Horvath H, Papp J, Halasz J, Jaray B, Szekely E, Schaff Z, Papp A, Bursics A, Harsanyi L, Lukovich P, Kupcsulik P, Lakatos P. No change in location of colorectal cancer between 1993–2004 in Hungarian patients. Z Gastroenterol 2005. [DOI: 10.1055/s-2005-869675] [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] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|